Claims:We claim:
1. A method (400, 600) for operating a single wiper (W) in a vehicle, the method (400, 600) comprising:
initiating (402), by a wiper motor (202), a movement of the wiper (W) from a resting position to a first position, on receiving an indication from a wiper controller (201) to turn the wiper ON;
monitoring, by a position sensor (204), rotary angle of a wiper shaft (WS);
moving (404), by the wiper motor (202), the wiper (W) from the first position to a second position;
reversing (406, 408), by the wiper controller (201), direction of rotation of a wiper motor shaft (202S) thereby reversing the direction of movement of the wiper (W) at the second position, on the wiper controller (201) determining that the wiper (W) has reached the second position based on a feedback from the position sensor (204);
moving (410), by the wiper motor (202), the wiper (W) from the second position to a third position; and
moving (412), by the wiper motor (202), the wiper (W) in a continuous manner between the second position and the third position until the wiper (W) is ON.

2. The method (600) as claimed in claim 1, wherein the method (600) comprises turning OFF the wiper (W), wherein said turning OFF the wiper (W) comprises,
moving (602), by the wiper motor (202), the wiper (W) from the third position to the first position;
reversing (604, 606), by the wiper controller (201), direction of rotation of the wiper motor shaft (202S) thereby reversing the direction of movement of the wiper (W) at the first position, on the wiper controller (201) determining that the wiper (W) has reached the first position from the third position based on feedback from the position sensor (204);
moving (608), by the wiper motor (202), the wiper (W) from the first position to the resting position; and
stopping (610), by the wiper motor (202), movement of the wiper (W), on the wiper controller (201) determining that the wiper (W) has reached the resting position (parking position) based on feedback from the position sensor (204).

3. The method (400, 600) as claimed in claim 2, wherein the wiper (W) is turned ON based on a control signal, wherein the control signal can be triggered at least one of manually and automatically;
wherein said reversing (406, 408), by the wiper controller (201), direction of rotation of the wiper motor shaft (202S) thereby reversing the direction of movement of the wiper (W) at the second position, includes changing, by the controller unit (201), the direction of current in the wiper motor (202) by using a h-bridge circuit (700);
the position sensor (204) is at least a bearingless encoder;
wherein the wiper (W) is turned OFF based on the control signal, wherein the control signal can be triggered at least one of manually and automatically;
said reversing (604, 606), by the wiper controller (201), direction of rotation of the wiper motor shaft (202S) thereby reversing the direction of movement of the wiper (W) at the first position, includes changing, by the controller unit (201), the direction of current in the wiper motor (202) by using the h-bridge circuit (700); and
the wiper controller (201) stops the rotational movement of the wiper motor shaft (202S) thereby stopping the movement of the wiper (W) using a limit switch when the wiper controller (201) determines that the wiper (W) has reached the resting position (parking position) based on the feedback from the position sensor (204).

4. A system (200) for operating a single wiper (W) in a vehicle, the system (200) comprising:
a wiper controller (201);
a wiper motor (202); and
a position sensor (204) provided in a wiper shaft (WS) and configured for monitoring rotary angle of the wiper shaft (WS),
wherein
the wiper motor (202) is configured for,
initiating movement of the wiper (W) from a resting position to a first position, on receiving an indication from the wiper controller (201) to turn the wiper ON;
moving the wiper (W) to a second position, on the wiper controller (201) determining that the wiper (W) has reached the first position based on a feedback from the position sensor (204);
reversing direction of movement of the wiper (W) at the second position, on the wiper controller (201) reversing the direction of rotation of the wiper motor shaft (202S), on the wiper controller (201) determining that the wiper (W) has reached the second position based on feedback from the position sensor (204); and
moving the wiper (W) in a continuous manner between the second position and the third position until the wiper (W) is ON.

5. The system (200) as claimed in claim 4, wherein turning OFF the wiper (W) by the wiper motor (202) comprises,
reversing direction of movement of the wiper (W) at the first position, on the wiper controller (201) reversing the direction of rotation of the wiper motor shaft (202S), on the wiper controller (201) determining that the wiper (W) has reached the first position from the third position based on feedback from the position sensor (204);
moving the wiper (W) from the first position to the resting position; and
stopping movement of the wiper (W), on the wiper controller (201) determining that the wiper (W) has reached the resting position (parking position) based on feedback from the position sensor (204).

6. The system (200) as claimed in claim 5, wherein the wiper (W) is turned ON based on a control signal, where the control signal can be triggered at least one of manually and automatically;
the wiper controller (201) is configured to reverse the direction of rotation of the wiper motor shaft (202S) by changing the direction of current in the wiper motor (202) using a h-bridge circuit (700), on the wiper controller (201) determining that the wiper (W) has reached the second position based on feedback from the position sensor (204);
the position sensor (204) is at least a bearingless encoder;
the wiper motor (202) moves the wiper (W) through the wiper shaft (WS) and a mechanical linkage mechanism;
the wiper (W) is mounted on the wiper shaft (WS);
one end of the mechanical linkage mechanism is movably connected to the wiper shaft (WS) and another end of the mechanical linkage mechanism is movably connected to the wiper motor shaft (202S);
the wiper (W) is turned OFF based on the control signal, the control signal can be triggered at least one of manually and automatically;
the wiper controller (201) is configured to reverse the direction of rotation of the wiper motor shaft (202S) by changing the direction of current in the wiper motor (202) using the h-bridge circuit (700) on the wiper controller (201) determining that the wiper (W) has reached the first position based on feedback from the position sensor (204); and
the wiper controller (201) stops the rotational movement of the wiper motor shaft (202S) thereby stopping the movement of the wiper (W) using a limit switch when the wiper controller (201) determines that the wiper (W) has reached the resting position based on the feedback from the position sensor (204).

7. A method (800, 1000) for operating a single wiper (W) in a vehicle, the method (800, 1000) comprising:
initiating (804), by a wiper motor (302), a movement of the wiper (W) from a resting position to a first position, on receiving an indication from a wiper controller (301) to turn the wiper ON;
monitoring, by a position sensor (304), rotary angle of a wiper shaft (WS);
moving (806), by the wiper motor (302), the wiper (W) from the first position to a second position;
reversing (808, 810), by the wiper controller (301), direction of rotation of a wiper motor shaft (302S) thereby reversing the direction of movement of the wiper (W) at the second position, on the wiper controller (301) determining that the wiper (W) has reached the second position based on a feedback from the position sensor (304);
moving (812), by the wiper motor (302), the wiper (W) from the second position to a third position;
moving (814), by the wiper motor (302), the wiper (W) between the second position and the third position for a predefined time or a predefined number of cycles;
moving (816), by the wiper motor (302), the wiper (W) from the third position to a fourth position;
reversing (818, 820), by the wiper controller (301), direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of movement of the wiper (W) at the fourth position, on the wiper controller (301) determining that the wiper (W) has reached the fourth position based on the feedback from the position sensor (304);
moving (822), by the wiper motor (302), the wiper (W) from the fourth position to a fifth position;
moving (824), by the wiper motor (302), the wiper (W) between the fourth position and the fifth position for a predefined time or a predefined number of cycles;
moving (826), by the wiper motor (302), the wiper (W) from the fifth position to a sixth position;
reversing (828, 830), by the wiper controller (301), direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of movement of the wiper (W) at the sixth position, on the wiper controller (301) determining that the wiper (W) has reached the sixth position based on the feedback from the position sensor (304);
moving (832), by the wiper motor (302), the wiper (W) from the sixth position to a seventh position; and
moving (834), by the wiper motor (302), the wiper (W) between the sixth position and the seventh position in a continuous manner until the wiper (W) is ON,
wherein
the wiper motor (302) moves the wiper (W) to the plurality of positions in an incremental manner or a decremental manner with respect to the resting position based on the instructions from the wiper controller (301) when the wiper (W) is ON.

8. The method (1000) as claimed in claim 7, wherein the method (1000) comprises turning OFF the wiper (W), wherein said turning OFF the wiper (W) comprises,
moving (1004), by the wiper motor (302), the wiper (W) from the seventh position to the fifth position;
reversing (1006, 1008), by the wiper controller (301), direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of movement of the wiper (W) at the fifth position, on the wiper controller (301) determining that the wiper (W) has reached the fifth position from the seventh position based on feedback from the position sensor (304);
moving (1010), by the wiper motor (302), the wiper (W) between the fifth position and the fourth position for a predefined time or a predefined number of cycles;
moving (1012), by the wiper motor (302), the wiper (W) from the fifth position to the third position;
reversing (1014, 1016), by the wiper controller (301), direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of movement of the wiper (W) at the third position, on the wiper controller (301) determining that the wiper (W) has reached the third position from the fifth position based on feedback from the position sensor (304);
moving (1018), by the wiper motor (302), the wiper (W) between the third position and the second position for a predefined time or a predefined number of cycles;
moving (1020), by the wiper motor (302), the wiper (W) from the third position to the first position;
reversing (1022, 1024), by the wiper controller (301), direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of movement of the wiper (W) at the first position, on the wiper controller (301) determining that the wiper (W) has reached the first position from the third position based on feedback from the position sensor (304);
moving (1026), by the wiper motor (302), the wiper (W) from the first position to the resting position; and
stopping (1028), by the wiper motor (302), movement of the wiper (W), on the wiper controller (301) determining that the wiper (W) has reached the resting position (parking position) based on feedback from the position sensor (304).

9. The method (800, 1000) as claimed in claim 8, wherein the wiper (W) is turned ON based on a control signal, wherein the control signal can be triggered at least one of manually and automatically;
the wiper controller (301) is configured to reverse the direction of rotation of the wiper motor shaft (302S) by changing the direction of current in the wiper motor (302) by using a h-bridge circuit (700);
the position sensor (304) is at least a bearingless encoder;
the wiper (W) is turned OFF based on the control signal, wherein the control signal can be triggered at least one of manually and automatically; and
the wiper controller (301) stops the rotational movement of the wiper motor shaft (302S) thereby stopping the movement of the wiper (W) using a limit switch when the wiper controller (301) determines that the wiper (W) has reached the resting position (parking position) based on the feedback from the position sensor (304).

10. A system (300) for operating a single wiper (W) in a vehicle, the system (300) comprising:
a wiper controller (301);
a wiper motor (302); and
a position sensor (304) provided in a wiper shaft (WS) and configured for monitoring rotary angle of the wiper shaft (WS),
wherein
the wiper motor (302) is configured for moving the wiper (W) to a plurality of positions in an incremental manner or a decremental manner with respect to the resting position based on instructions from the wiper controller (301) when the wiper is ON.

11. The system (300) as claimed in claim 10, wherein the wiper motor (202) is configured for,
initiating movement of the wiper (W) from a resting position to a first position, on receiving an indication from the wiper controller (301) to turn the wiper ON;
moving the wiper (W) to a second position, on the wiper controller (301) determining that the wiper (W) has reached the first position based on a feedback from the position sensor (304);
reversing direction of movement of the wiper (W) at the second position, on the wiper controller (301) reversing the direction of rotation of the wiper motor shaft (302S), on the wiper controller (301) determining that the wiper (W) has reached the second position based on feedback from the position sensor (304);
moving the wiper (W) from the second position to a third position;
moving the wiper (W) between the second position and the third position for a predefined time or a predefined number of cycles;
moving the wiper (W) from the third position to a fourth position;
reversing direction of movement of the wiper (W) at the fourth position, on the wiper controller (301) reversing the direction of rotation of the wiper motor shaft (302S), on the wiper controller (301) determining that the wiper (W) has reached the fourth position based on feedback from the position sensor (304);
moving the wiper (W) from the fourth position to a fifth position;
moving the wiper (W) between the fourth position and the fifth position for a predefined time or a predefined number of cycles;
moving the wiper (W) from the fifth position to a sixth position;
reversing direction of movement of the wiper (W) at the sixth position, on the wiper controller (301) reversing the direction of rotation of the wiper motor shaft (302S), on the wiper controller (301) determining that the wiper (W) has reached the sixth position based on feedback from the position sensor (304);
moving the wiper (W) from the sixth position to a seventh position; and
moving the wiper (W) between the sixth position and the seventh position in a continuous manner until the wiper (W) is ON.

12. The system (300) as claimed in claim 11, wherein turning OFF the wiper (W) by the wiper motor (302) comprises,
moving the wiper (W) from the seventh position to the fifth position;
reversing the direction of movement of the wiper (W) at the fifth position, on the wiper controller (301) reversing the direction of rotation of the wiper motor shaft (302S), on the wiper controller (301) determining that the wiper (W) has reached the fifth position from the seventh position based on feedback from the position sensor (304);
moving the wiper (W) between the fifth position and the fourth position for a predefined time or a predefined number of cycles;
moving the wiper (W) from the fifth position to the third position;
reversing the direction of movement of the wiper (W) at the third position, on the wiper controller (301) reversing the direction of rotation of the wiper motor shaft (302S), on the wiper controller (301) determining that the wiper (W) has reached the third position from the fifth position based on feedback from the position sensor (304);
moving the wiper (W) between the third position and the second position for a predefined time or a predefined number of cycles;
moving the wiper (W) from the third position to the first position;
reversing the direction of movement of the wiper (W) at the first position, on the wiper controller (301) reversing the direction of rotation of the wiper motor shaft (302S), on the wiper controller (301) determining that the wiper (W) has reached the first position from the third position based on feedback from the position sensor (304);
moving the wiper (W) from the first position to the resting position; and
stopping the movement of the wiper (W), on the wiper controller (301) determining that the wiper (W) has reached the resting position (parking position) based on feedback from the position sensor (304).

13. The system (300) as claimed in claim 12, wherein the wiper (W) is turned ON based on a control signal, the control signal can be triggered at least one of manually and automatically;
the wiper controller (301) is configured to reverse the direction of rotation of the wiper motor shaft (302S) by changing the direction of current in the wiper motor (302) using a h-bridge circuit (700);
the position sensor (204) is at least a bearingless encoder;
the wiper motor (302) moves the wiper (W) through the wiper shaft (WS) and a mechanical linkage mechanism (306);
the wiper (W) is mounted on the wiper shaft (WS);
one end of the mechanical linkage mechanism is movably connected to the wiper shaft (WS) and another end of the mechanical linkage mechanism is movably connected to the wiper motor shaft (302S);
the wiper (W) is turned OFF based on the control signal, where the control signal can be triggered at least one of manually and automatically; and
the wiper controller (201) stops the rotational movement of the wiper motor shaft (302S) thereby stopping the movement of the wiper (W) using a limit switch when the wiper controller (301) determines that the wiper (W) has reached the resting position (parking position) based on the feedback from the position sensor (204).
, Description:TECHNICAL FIELD
[001] The embodiments herein generally relate to a wiper assembly in a vehicle and more particularly, to systems and methods for operating the wiper assembly having a single wiper arm, which provides incremental wiping with a same wiping angle.

BACKGROUND
[002] The four bar linkage mechanism of a wiper motor for a single wiper arm and blade mechanism is designed in such a way that it is able to have a wiping angle of at most 100 degrees. There are chances of linkages getting locked if the linkages are designed for greater than 100 degree wiping angle.
[003] Further, for aesthetic purposes, the wiper should be as low as possible on the windshield. Maintaining the wiper as low as possible (close to or below the bottom rim of the windshield) can result in the wiper being unable to clean the entire windshield (as the movement of the wiper is restricted to 100 degrees from the bottom rim of the windshield) and can cause visual hinderances to the driver and/or the co-passenger.
[004] As depicted in the example in FIG. 1, the single wiper arm is only able to cover a 100 degree angle from its resting position. This prevents the wiper from cleaning the entire windshield and can cause visual hinderances to the driver and/or the passenger.
[005] Further, this will also result in homologation requirements not being satisfied. Thus, to fulfill the homologation requirement, the parking position of the wiper is spaced at a distance from the bottom rim of the windshield thereby the wiper is positioned in the middle of windshield which in turn hinders the front visibility for passenger.
[006] Most conventional systems use a motor linkage assembly to wipe the windshield for dual wiper arm and blade assembly, each having different wiping angle as per original equipment manufacturers (OEM) requirement.
[007] Another conventional system includes a telescopic arm for single wiper arm and blade, which provides a 180 degree wiping angle with the linear movement of the wiper arm in order to get more wiping area. However, this design consumes more packaging space and a longer duty cycle time.
[008] Another conventional system includes direct drive wiper motors thereby eliminating the usage of wiper linkage assembly from the vehicle completely, wherein wipers are directly mounted on the output shaft of the wiper motor and wiping angle is controlled from wiper motor only.

OBJECTS
[009] The principal object of embodiments herein is to disclose a system for operating a single wiper assembly having a single wiper arm, which provides incremental wiping with a same wiping angle, wherein the wiper is adapted to clean more wiping area along with the wiping zones with any permissible wiping angle offered by linkage mechanism without affecting the visibility of passenger the resting position of the wiper is aesthetically good.
[0010] Another object of embodiments herein is to disclose a method for operating a single wiper assembly in a vehicle.
[0011] Another object of embodiments herein is to disclose a wiper assembly having a single wiper arm, which provides incremental wiping with a same wiping angle, wherein the wiper is adapted to clean more wiping area along with the wiping zones with any permissible wiping angle offered by the linkage mechanism without affecting the visibility of the passenger and/or the driver and maintaining an aesthetic parking position (or resting position) for the wiper.
[0012] Another object of embodiments herein is to disclose a system for operating a single wiper assembly in a vehicle, where the system is configured to move the single wiper to a plurality of positions in an incremental manner or a decremental manner with respect to a resting position (parking position) of the wiper when the wiper is ON.
[0013] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating at least one embodiment and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF FIGURES
[0014] Embodiments herein are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0015] FIG. 1 depicts a process of operating a single wiper arm, according to prior arts;
[0016] FIG. 2 depicts a wiper control system in a vehicle, wherein the vehicle comprises a single wiper, according to a first and second embodiments as disclosed herein;
[0017] FIGs. 3A, 3B, 3C, 3D and 3E depict an example of the operation of the single wiper during ON cycle, according to the first embodiments as disclosed herein;
[0018] FIG. 4A is a flowchart depicting the process of operating the single wiper during the ON cycle, according to the first embodiments as disclosed herein;
[0019] FIGs. 5A and 5B depict the operation of the single wiper during OFF cycle, according to the first embodiment as disclosed herein;
[0020] FIG. 6 is a flowchart depicting the process of operating the single wiper during the OFF cycle, according to the first embodiments as disclosed herein;
[0021] FIG. 7A, 7B, 7C, 7D, 7E, 7F, 7G, 7H, 7I, 7J and 7K depict an example of the operation of the single wiper during ON cycle, according to the second embodiments as disclosed herein;
[0022] FIGs. 8A, 8B and 8C are flowcharts depicting the process of operating the single wiper during the ON cycle, according to the second embodiments as disclosed herein;
[0023] FIGs. 9A, 9B, 9C, 9D, 9E and 9F depict the operation of the single wiper during OFF cycle, according to the second embodiment as disclosed herein;
[0024] FIGs. 10A and 10B are flowcharts depicting the process of operating the single wiper during the OFF cycle, according to the second embodiments as disclosed herein; and
[0025] FIGs. 11A, 11B and 11C depict the h-bridge circuit in the wiper controller, according to embodiments as disclosed herein.

DETAILED DESCRIPTION
[0026] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0027] The embodiments herein achieve a system for operating a wiper assembly having a single wiper arm, which provides incremental wiping with a same wiping angle. Further, embodiments herein achieve a method of operating a single wiper in a vehicle. Referring now to the drawings, and more particularly to FIGS. 2 through 11C, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0028] Embodiments herein disclose a wiper assembly having a single wiper arm, which provides incremental wiping with a same wiping angle, wherein the wiper is adapted to clean more wiping area along with the wiping zones with any permissible wiping angle offered by linkage mechanism without affecting the visibility of the passenger and/or the driver, and maintaining an aesthetic parking position (resting position) for the wiper.
[0029] On the wiper (W) being turned ON, the wiper moves from its resting position to a first position. From the first position, the wiper moves to a second position and then the wiper moves from the second position to a third position. As long as the wiper is ON, the wiper continues to move between the second and third positions. On the wiper being turned OFF, the wiper moves from the third position to the first position and finally the wiper moves from the first position to its resting position
[0030] FIG. 2 depicts a wiper control system (200, 300) in a vehicle, wherein the vehicle comprises a single wiper arm, according to first and second embodiments as disclosed herein. In the embodiments, the wiper control system (200, 300) comprises a wiper controller (201, 301), a wiper motor (202, 302), a position sensor (204, 304) and a mechanical linkage mechanism (206, 306). For the purpose of this description and ease of understanding, the wiper control system (200, 300) is explained herein below with reference to operating the single wiper (W) in the vehicle for removing water and/or dirt/foreign material on the windshield thereby cleaning the windshield. However, it is also within the scope of the invention to use/implement the wiper control system (200, 300) for operating the single wiper (W) for removing water and/or dirt/foreign material on a solar panel or a glass member or any other applications, where cleaning is required, without otherwise deterring the intended function of the wiper control system (200, 300) as can be deduced from the description and corresponding drawings. The wiper (W) is mounted onto a wiper shaft (WS). The wiper (W) includes a wiper arm (not shown) and a wiper blade (not shown). One end of the wiper arm is mounted onto the wiper shaft (WS). The wiper blade is secured to the wiper arm.
[0031] The wiper controller (201, 301) and the wiper motor (202, 302) are in electrical communication with each other, wherein the wiper controller (201, 301) provides instructions to the wiper motor (202, 302) to initiate a wiping motion by the wiper (W). The wiper controller (201, 301) can provide instructions to the wiper motor (202, 302) based on a control signal. In an embodiment herein, the control signal can be used to provide a trigger to the wiper controller (201, 301) manually, wherein a user of the vehicle uses a manual means (such as a stalk, a dial, a switch, a touch screen, or any other interface present in the vehicle) to turn the wiper on. In the embodiments herein, the control signal can be used to provide a trigger to the wiper controller (201, 301) automatically, wherein one or more control units present in the vehicle (not shown) initiate the wiping action by the wiper (W) on detecting a trigger (such as, but not limited to, water on the windshield, dirt/foreign material on the windshield, pre-defined time intervals, and so on).
[0032] The wiper motor (202, 302) is connected to the wiper (W) through the wiper shaft (WS) and the mechanical linkage mechanism (206, 306). In an embodiment herein, the mechanical linkage mechanism (206, 306) can be a 4-bar crank rocker mechanism. The wiper motor (202, 302) can move the wiper (W) across the windshield based on instructions received from the wiper controller (201, 301). The wiper motor (202, 302) can turn ON/OFF the motion of the wiper (W) based on the instructions received from the wiper controller (201, 301). The wiper motor (202, 302) can adjust the speed of the wiper (W) based on the instructions received from the wiper controller (201, 301). The wiper motor (202, 302) can adjust the angle of motion of the wiper (W) based on the instructions received from the wiper controller (201, 301). The wiper motor (202, 302) comprises of a H bridge circuit (700), as shown in FIG. 11A to 11C), wherein the H bridge circuit (700) is used to change the direction of rotation of a wiper motor shaft (202S, 302S), (as shown in fig. 2) thereby changing the direction of movement of the wiper (W).
[0033] The position sensor (204, 304) is embedded in the wiper shaft (202S, 302S), such that the position sensor (204, 304) can measure the current rotary angle of the wiper shaft (WS) and communicate the measured angle of the wiper shaft (WS) to the wiper controller (201, 302). In an embodiment herein, the position (204, 304) can communicate the measured angle of the wiper shaft (WS) to the wiper controller (201, 301) using a wired means. In an embodiment herein, the position sensor (204, 304) can communicate the measured angle of the wiper shaft (WS) to the wiper controller (201, 301) using a wireless means. For the purpose of this description and ease of understanding, the position sensor (204, 304) is considered to be a bearingless encoder.
[0034] In the first embodiment, consider that the wiper (W) is in the resting position (as depicted in the example in FIG. 3A). The resting position of the wiper (W) is parallel to a bottom cover panel of the windshield of the vehicle. The resting position of the wiper (W) is considered to be 0 degree. It is also within the scope of the invention to provide the resting position of the wiper (W) more than zero degree. On receiving an indication from the wiper controller (201) to turn the wiper ON, the wiper motor (202) initiates a movement of the wiper (W) from the resting position to the first position (as depicted in the example in FIG. 3B). In an embodiment herein, the position sensor (204) measures the rotary angle of the wiper shaft (WS) and communicates the measured rotary angle to the wiper shaft (WS) to the wiper controller (201). The first position of the wiper (W) can be at a pre-defined angle from the resting position. In an example herein, the first position can be at 100 degrees from the resting position (as depicted in the example in FIG. 3B). In another example, the first position can be at any other degree with respect to the resting position based on requirement and/or based on type and configuration of the vehicle.
[0035] The wiper motor (202) moves the wiper (W) from the first position to the second position (as depicted as example in FIG. 3C). On the wiper controller (201) determining that the wiper (W) has reached the second position based on the feedback from the position sensor (204), the wiper controller (201) provides an indication to the wiper motor (202) to reverse the direction of rotation of the wiper motor shaft (202S) thereby reversing the movement of the wiper (W) at the second position. The second position can be at a pre-defined angle from the resting position. In an example herein, the second position can be at 25 degrees from the resting position and 75 degrees from the first position (as depicted in the example in FIG. 3C). In another example, the second position can be less or more than 25 degree from the resting position thereby changing the angle of the third position from the resting position. In an embodiment herein, the wiper controller (201) can reverse the direction of rotation of the wiper motor shaft (202S) by changing the current in the wiper motor (202) by using the H-bridge circuit (700).
[0036] On receiving an indication to reverse the direction of rotation of the wiper motor shaft (202S) from the wiper controller 201, the wiper motor (202) initiates a movement of the wiper (W) from the second position in the reverse direction to the third position (as depicted as example in FIG. 3D). The third position can be at a pre-defined angle from the resting position. In an example herein, the third position can be at 125 degrees from the resting position and 100 degrees from the second position (as depicted in the example in FIG. 3D). It is also within the scope of the invention to change the angle values of the wiper (W) at any of the first position, the second position and the third position with respect to the resting position according to the requirement and/or based on type and configuration of the vehicle. Further, it is also within the scope of the invention to move the wiper (W) to more than three positions with respect to the resting position based on requirement and/or based on type and configuration of the vehicle.
[0037] The wiper motor (202) moves the wiper (W) between the second and third positions in a continuous manner, till the wiper (W) is being kept ON (as depicted in the example in FIG. 3E).
[0038] FIG. 4A is a flowchart depicting the method (400) of operating a single wiper (W) during ON cycle, according to the first embodiment as disclosed herein. Consider that the wiper (W) is in the resting position (as depicted in the example in FIG. 3A). In step 401, the wiper controller 201 receives the control signal to turn ON the wiper (W). In an embodiment herein, the control signal can be used to provide a trigger to the wiper controller 201 to turn the wiper (W) ON manually. In another embodiment herein, the control signal can be used to provide a trigger to the wiper controller 201 to turn the wiper (W) ON automatically.
[0039] On the control signal being received, in step 402, the wiper motor (202) moves the wiper (W) from the resting position (as depicted in the example in FIG. 3B) to the first position. This comprises the wiper controller (201) providing instructions to the wiper motor (202) to move the wiper (W) from the resting position. The wiper motor (202) can use the mechanical linkage mechanism (206) and the wiper shaft (WS) to move the wiper (W) from the resting position.
[0040] In step 404, the wiper motor (202) moves the wiper (W) from the first position to the second position (as depicted in the example in FIG. 3C).
[0041] In step 406, the wiper controller (201) determines that the wiper (W) has reached the second position based on the communication about the rotary angle received from the position sensor (204). In step 408, the wiper controller (201) provides an indication to the wiper motor (202) to reverse the direction of rotation of the wiper motor shaft (202S) thereby reversing the movement of the wiper (W) at the second position. In an embodiment herein, the wiper controller (201) can reverse the direction of rotation of the wiper motor shaft (202S) by changing the direction of current in the wiper motor (202) by using the H-bridge circuit (700).
[0042] In step 410, the wiper motor (200) moves the wiper (W) from the second position to the third position (as depicted in the example in FIG. 3D).
[0043] In step 412, the wiper motor (202) moves the wiper (W) in a continuous manner between the second and third positions, until the wiper (W) is ON (as depicted in the example in FIG. 3E).
[0044] The various actions in method 400 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIG. 4 may be omitted.
[0045] Consider that the wiper (W) is in motion between the third position and the second position. Consider that the wiper controller 201 receives an indication to turn the wiper OFF. In another embodiment herein, the control signal can be used to provide a trigger to the wiper controller 201 to turn the wiper (W) OFF manually or automatically On receiving an indication from the wiper controller 201 to turn the wiper OFF, the wiper motor 202 initiates a movement of the wiper (W) from the third position to the first position (as depicted in the example in FIG. 5A). In an embodiment herein, the encoder 204 measures the rotary angle of the wiper shaft (WS) and communicates the measured rotary angle to the wiper shaft (WS) to the wiper controller 201. On the wiper controller 201 determining that the wiper (W) has moved from the third position and has reached the first position (as depicted in the example in FIG. 5A) based on the feedback from the position sensor (204), the wiper controller 201 provides an indication to the wiper motor 202 to reverse the direction of rotation of the wiper motor shaft 202S). In an embodiment herein, the wiper controller 201 can reverse the direction of rotation of the wiper motor shaft 202S by changing the direction of current in the motor 202 by using the H-bridge circuit 700.On receiving an indication to reverse the direction of rotation of the wiper motor shaft 202S from the wiper controller 201, the wiper motor 202 initiates a movement of the wiper (W) from the first position to the resting position. On the wiper controller 201 determining that the wiper (W) has reached the resting position (as depicted in the example in FIG. 5B) based on the feedback from the position sensor (204), the wiper controller 201 provides an indication to the wiper motor 202 to stop the movement of the wiper (W) using a limit switch (not shown).
[0046] FIG. 6 is a flowchart depicting the method (600) of operating a single wiper (W) during OFF cycle, according to the first embodiment as disclosed herein. Consider that the wiper (W) is in motion between the third position and the second position. In step 601, the wiper controller 201 receives an indication (via the control signal) to turn the wiper OFF. In an embodiment herein, the control signal can be used to provide a trigger to turn the wiper OFF manually. In another embodiment herein, the control signal can be used to provide a trigger to turn the wiper OFF automatically.
[0047] In step 602, On receiving an indication from the wiper controller 201 to turn the wiper OFF, the wiper motor 202 initiates a movement of the wiper (W) from the third position to the first position (as depicted in the example in FIG. 5A). On the wiper controller (201) determining that the wiper (W) has moved from the third position and has reached the first position based on feedback from the position sensor (204) as depicted in the example in FIG. 5A) (in step 604).
[0048] In step (606), the wiper controller (201) provides an indication to the wiper motor (202) to reverse the direction of rotation of the wiper motor shaft (202S). In an embodiment herein, the wiper controller (201) can reverse the direction of rotation of the wiper motor shaft (202S) by changing direction of current in the wiper motor (202) by using the H-bridge circuit (700). On receiving an indication to reverse the direction of rotation of the wiper motor shaft (202S) from the wiper controller 201, the wiper motor 202 initiates a movement of the wiper (W) from the first position to the resting position (in step 608). On the wiper controller 201 determining that the wiper (W) has reached the resting position (as depicted in the example in FIG. 5B) based on the feedback from the position sensor (204), the wiper controller 201 provides an indication to the wiper motor 202 to stop the movement of the wiper (W) and the wiper motor 202 accordingly stops the motion of the wiper (W) (in step 610) using the limit switch.
[0049] The various actions in method 600 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIG. 6 may be omitted.
[0050] In the second embodiment, the wiper (W) is configured to be moved to a plurality of positions in an incremental manner or a decremental manner with respect to a resting position when the wiper (W) is ON. On the wiper (W) being turned ON, the wiper (W) moves from its resting position to a first position. From the first position, the wiper moves to a second position and then the wiper moves from the second position to a third position. The wiper (W) moves between the third position and the second position for a predefined time or a predefined number of cycles. Thereafter, the wiper (W) moves from the third position to a fourth position. From the fourth position, the wiper moves to a fifth position. Then, the wiper (W) moves between the fifth position and the fourth position for a predefined time or a predefined number of cycles. The wiper from the fifth position moves to a sixth position and the wiper from the sixth position moves to a seventh position. As long as the wiper is ON, the wiper (W) continues to move between the seventh position and sixth position. On the wiper (W) being turned OFF, the wiper moves from the seventh position to the fifth position. Thereafter, the wiper moves between the fifth position and the fourth position for a predefined time or a predefined number of cycles. The wiper from the fifth position moves to third position. Thereafter, the wiper (W) moves between the third position and the second position for a predefined time or a predefined number of cycles. The wiper from the third position moves to the first position and finally the wiper moves from the first position to its resting position.
[0051] In the second embodiment, consider that the wiper (W) is in the resting position (as depicted in the example in FIG. 7A). The resting position of the wiper (W) is considered to be 0 degree. It is also within the scope of the invention to provide the resting position of the wiper (W) more than zero degree. On receiving an indication from the wiper controller 301 to turn the wiper ON, the wiper motor 302 initiates a movement of the wiper (W) from the resting position to a first position (as depicted in the example in FIG. 7B). The first position of the wiper (W) can be at a pre-defined angle ‘X degree’ from the resting position. In an example herein, the pre-defined angle ‘X’ of the first position can be at 100 degrees from the resting position (as depicted in the example in FIG. 7B). In another example, the first position can be at any other degree with respect to the resting position based on requirement and/or based on type and configuration of the vehicle. The wiper motor (302) moves the wiper (W) from the first position to a second position (as depicted in the example in FIG. 7C). The second position can be at a pre-defined angle “Y degree” from the resting position. In an example herein, the pre-defined angle “Y second position can be at 10 degrees from the resting position (as depicted in the example in FIG. 7C). In another example, the second position can be less or more than 10 degree from the resting position thereby changing the angle of the third position from the resting position. On the wiper controller 301 determining that the wiper (W) has reached the second position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S thereby reversing the movement of the wiper (W) at the second position. The wiper motor (302) moves the wiper (W) from the second position to a third position (as depicted in the example in FIG. 7D). The third position can be at a pre-defined angle from the resting position. In an example herein, the third position can be at 100+Y = 110 degrees from the resting position (as depicted in the example in FIG. 7D). It is also within the scope of the invention to change the angle values of the wiper (W) at any of the first position, the second position and the third position with respect to the resting position according to the requirement and/or based on type and configuration of the vehicle. The wiper motor (302) moves the wiper (W) between the second position and the third position for a predefined time or a predefined number of cycles (as depicted as example in fig. 7E).
[0052] The wiper motor (302) moves the wiper (W) from the third position to a fourth position (as depicted in the example in FIG. 7F). The fourth position can be at a pre-defined angle “Z degree” from the resting position. In an example herein, the pre-defined angle “Z” of the fourth position can be at 20 degrees from the resting position (as depicted in the example in FIG. 7F). On the wiper controller 301 determining that the wiper (W) has reached the fourth position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S thereby reversing the movement of the wiper (W) at the fourth position. The wiper motor (302) moves the wiper (W) from the fourth position to a fifth position (as depicted in the example in FIG. 7G). The fifth position can be at a pre-defined angle from the resting position. In an example herein, the fifth position can be at 100+Z = 120 degrees from the resting position (as depicted in the example in FIG. 7G). The wiper motor (302) moves the wiper (W) between the fourth position and the fifth position for a predefined time or a predefined number of cycles (as depicted as example in fig. 7H).
[0053] The wiper motor (302) moves the wiper (W) from the fifth position to a sixth position (as depicted in the example in FIG. 7I). The sixth position can be at a pre-defined angle “S degree” from the resting position. In an example herein, the pre-defined angle “S” of the sixth position can be at 30 degrees from the resting position (as depicted in the example in FIG. 7I). On the wiper controller 301 determining that the wiper (W) has reached the sixth position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S thereby reversing the movement of the wiper (W) at the sixth position. The wiper motor (302) moves the wiper (W) from the sixth position to a seventh position (as depicted in the example in FIG. 7
J). The seventh position can be at a pre-defined angle from the resting position. In an example herein, the seventh position can be at 100+S = 130 degrees from the resting position (as depicted in the example in FIG. 7J). The wiper motor (302) moves the wiper (W) between the sixth position and the seventh position in a continuous manner until the wiper (W) is ON (as depicted as example in fig. 7K). Thus, the wiper motor (302) moves the wiper (W) in the incremental manner with respect to the resting position. The wiper controller (301) can reverse the direction of rotation of the wiper moor shaft (302S) by changing the direction of current in the wiper motor (302) by using a H bridge circuit (700).
[0054] Similarly, the movement of the wiper (W) in the decremental manner with respect to the resting position is as follows. Consider that the wiper (W) is in the resting position (not shown). The resting position of the wiper (W) is considered to be 0 degree. On receiving an indication from the wiper controller 301 to turn the wiper ON, the wiper motor 302 initiates a movement of the wiper (W) from the resting position to a first position. In an example herein, the first position can be at 100 degrees from the resting position. The wiper motor (302) moves the wiper (W) from the first position to a second position. In an example, the second position can be at 30 degree from the resting position. On the wiper controller 301 determining that the wiper (W) has reached the second position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S thereby reversing the movement of the wiper (W) at the second position. The wiper motor (302) moves the wiper (W) from the second position to a third position. In an example herein, the third position is 130 degrees from the resting position. The wiper motor (302) moves the wiper (W) between the second position and the third position for a predefined time or a predefined number of cycles.
[0055] The wiper motor (302) moves the wiper (W) from the third position to a fourth position. In an example herein, the fourth position can be at 20 degrees from the resting position. On the wiper controller 301 determining that the wiper (W) has reached the fourth position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S thereby reversing the movement of the wiper (W) at the fourth position. The wiper motor (302) moves the wiper (W) from the fourth position to a fifth position. In an example herein, the fifth position can be at 120 degrees from the resting position. The wiper motor (302) moves the wiper (W) between the fourth position and the fifth position for a predefined time or a predefined number of cycles.
[0056] The wiper motor (302) moves the wiper (W) from the fifth position to a sixth position. In an example herein, sixth position can be at 10 degrees from the resting position. On the wiper controller 301 determining that the wiper (W) has reached the sixth position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S thereby reversing the movement of the wiper (W) at the sixth position. The wiper motor (302) moves the wiper (W) from the sixth position to a seventh position. In an example herein, the seventh position can be at 110 degrees from the resting position. The wiper motor (302) moves the wiper (W) between the sixth position and the seventh position in a continuous manner until the wiper (W) is ON. Thus, the wiper motor (302) moves the wiper (W) in the decremental manner with respect to the resting position.
[0057] FIGs. 8A, 8B and 8C are flowcharts depicting the process (800) of operating the single wiper (W) during the ON cycle, according to the second embodiments as disclosed herein. Consider that the wiper (W) is in the resting position (as depicted in the example in FIG. 7A). In step (802), the wiper controller (301) receives the control signal to turn ON the wiper (W). In an embodiment herein, the control signal can be used to provide a trigger to the wiper controller 301 to turn the wiper (W) ON manually or automatically.
[0058] On the control signal being received, in step 804, the wiper motor (302) moves the wiper (W) from a resting position to a first position based on the instructions from the wiper controller (301), (as depicted as example in FIG. 7B).
[0059] In step 806, the wiper motor (302) moves the wiper (W) from the first position to a second position, (as depicted as example in FIG. 7C). In step 808, the wiper controller (301) determines that the wiper (W) has reached the second position based on a feedback from a position sensor (304). In step 810, the wiper controller (301) provides an indication to the wiper motor (302) to reverse the direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of the movement of the wiper (W) at the second position, on determining that the wiper (W) has reached the second position
[0060] In step 812, the wiper motor (302) moves the wiper (W) from the second position to a third position (as depicted as example in FIG. 7D). In step 814, the wiper motor (302) moves the wiper (W) between the second position and the third position for a predefined time or a predefined number of cycles (as depicted as example in FIG. 7E). In step 816, the wiper motor (302) moves the wiper (W) from the third position to a fourth position (as depicted as example in FIG. 7F). In step 818, the wiper controller (301) determines that the wiper (W) has reached the fourth position based on a feedback from the position sensor (304).
[0061] In step 820, the wiper controller (301) provides an indication to the wiper motor (302) to reverse the direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of the movement of the wiper (W) from the fourth position, on determining that the wiper (W) has reached the fourth position. In step 822, the wiper motor (302) moves the wiper (W) from the fourth position to a fifth position (as depicted as example in FIG. 7G).
[0062] In step 824, the wiper motor (302) moves the wiper (W) between the fourth position and the fifth position for a predefined time or a predefined number of cycles (as depicted as example in FIG. 7H). In step 826, the wiper motor (302) moves the wiper (W) from the fifth position to a sixth position (as depicted as example in FIG. 7I). In step 828, the wiper controller (301) determines that the wiper (W) has reached the sixth position based on a feedback from the position sensor (304).
[0063] In step 830, the wiper controller (301) provides an indication to the wiper motor (302) to reverse the direction of rotation of the wiper motor shaft (302S) thereby reversing the direction of the movement of the wiper (W) from the sixth position, on determining that the wiper (W) has reached the sixth position. In step 832, the wiper motor (302) moves the wiper (W) from the sixth position to a seventh position (as depicted as example in FIG. 7J). In step 834, the wiper motor (302) moves the wiper (W) between the sixth position and the seventh position in a continuous manner until the wiper (W) is ON (as depicted as example in FIG. 7K). In an embodiment herein, the wiper controller (301) can reverse the direction of rotation of the wiper motor shaft (302S) by changing the direction of current in the wiper motor (302) by using a H-bridge circuit (700).
[0064] The various actions in method 800 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIGs. 8A, 8B and 8C may be omitted.
[0065] Consider that the wiper (W) is in motion between the sixth position and the seventh position. Consider that the wiper controller 301 receives an indication to turn the wiper OFF. On receiving an indication from the wiper controller 301 to turn the wiper OFF, the wiper motor 302 initiates a movement of the wiper (W) from the seventh position to the fifth position. On the wiper controller 301 determining that the wiper (W) has moved from the seventh position and has reached the fifth position (as depicted in the example in FIG. 9A) based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S.
[0066] On receiving an indication to reverse the direction of rotation of the wiper motor shaft 302S from the wiper controller 301, the wiper motor 302 initiates a movement of the wiper (W) between the fifth position and the fourth position for a predefined time or a predefined number of cycles (as depicted in the example in FIG. 9B). The wiper motor (302) moves the wiper (W) from the fifth position to the third position.
[0067] On the wiper controller 301 determining that the wiper (W) has moved from the fifth position and has reached the third position (as depicted in the example in FIG. 9C) based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S.
[0068] On receiving an indication to reverse the direction of rotation of the wiper motor shaft 302S from the wiper controller 301, the wiper motor 302 initiates a movement of the wiper (W) between the third position and the second position for a predefined time or a predefined number of cycles (as depicted in the example in FIG. 9D). The wiper motor (302) moves the wiper (W) from the third position to the first position (as depicted in the example in FIG. 9E).
[0069] On the wiper controller 301 determining that the wiper (W) has moved from the third position and has reached the first position based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to reverse the direction of rotation of the wiper motor shaft 302S.
[0070] On receiving an indication to reverse the direction of rotation of the wiper motor shaft 302S from the wiper controller 301, the wiper motor 302 initiates a movement of the wiper (W) from the first position to the resting position (as depicted in the example in FIG. 9F). On the wiper controller 301 determining that the wiper (W) has reached the resting position (as depicted in the example in FIG. 9F) based on the feedback from the position sensor (304), the wiper controller 301 provides an indication to the wiper motor 302 to stop the movement of the wiper (W) using a limit switch (not shown). It is also within the scope of the invention to move the wiper (W) to eighth position, ninth position, and tenth position and so on in an incremental manner or decremental manner based on the requirement using the same principle.
[0071] FIGs. 10A and 10B are flowcharts depicting the process of operating the single wiper W during the OFF cycle, according to the second embodiments as disclosed herein. Consider that the wiper (W) is in motion between the seventh position and the fifth position. In step, 1002, the wiper controller (301) receives the control signal to turn OFF the wiper (W) manually or automatically. In step 1004, the wiper motor (302) moves the wiper (W) from the seventh position to the fifth position. In step 1006, the wiper controller (301) determines that the wiper (W) has reached the fifth position based on the feedback from the position sensor (304).
[0072] In step 1008, the wiper controller (301) provides an indication to the wiper motor (302) to reverse the direction of rotation of the wiper motor shaft (302S) on determining that the wiper (W) has reached the fifth position. In step 1010, the wiper motor (302) moves the wiper (W) between the fifth position and the fourth position for a predefined time or a predefined number of cycles. In step 1012, the wiper motor (302) moves the wiper (W) from the fifth position to the third position.
[0073] In step 1014, the wiper controller (301) determines that the wiper (W) has reached the third position based on the feedback from the position sensor (304). In step 1016, the wiper controller (301) provides an indication to the wiper motor (302) to reverse the direction of rotation of the wiper motor shaft (302S) on determining that the wiper (W) has reached the third position. In step 1018, the wiper motor (302) moves the wiper (W) between the third position and the second position for a predefined time or a predefined number of cycles. In step 1020, The wiper motor (302) moves the wiper (W) from the third position to the first position
[0074] In step 1022, the wiper controller (301) determines that the wiper (W) has reached the first position based on the feedback from the position sensor (304). In step 1024, the wiper controller (301) provides an indication to the wiper motor (302) to reverse the direction of rotation of the wiper motor shaft (302S) on determining that the wiper (W) has reached the first position. In step 1026, the wiper motor (302) moves the wiper (W) from the first position to the resting position. The wiper controller (301) can reverse the direction of rotation of the wiper motor shaft (302S) by changing the direction of current in the motor (302) by using a H bridge circuit (700).
[0075] In step 1028, the wiper controller (301) provides an indication to the wiper motor (302) to stop the movement of the wiper (W) and accordingly the wiper motor (302) stops the motion of the wiper (W) using a limit switch on the wiper controller (301) determining that the wiper (W) has reached the resting position.
[0076] The various actions in method 1000 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in 10A and 10B may be omitted. FIGs. 11A, 11B and 11C depict the h-bridge circuit in the wiper controller (201, 301). The wiper controller (201, 301) comprises a h-bridge circuit 700. The wiper controller (201, 301) uses the h-bridge circuit 700 to change the direction of rotation of the wiper motor shaft (202S, 302S) by changing the direction of current in the h-bridge circuit 700.
[0077] The h-bridge circuit 700 comprises of N-MOSFET and diode pairs; Q1 701a and D1 701b; Q2 702a and D2 702b; Q3 703a and D3 703b; and Q4 704a and D4 704b. When the wiper (W) is moving in the clockwise direction (for example, from the first position to the second position, from the third position to the second position, and so on), the N-MOSFETs Q1 701a and Q4 704a will be switched ON (as depicted in FIG. 11B). When the wiper (W) is moving in the anti-clockwise direction (for example, from the resting position to the first position, from the second position to the third position, and so on), the N-MOSFETs Q2 702a and Q3 703a will be switched ON (as depicted in FIG. 11C).
[0078] Embodiments herein can achieve a higher wiping area, while clearing homologation requirements. Embodiments herein provide an aesthetically pleasing resting position for the wipers. Embodiments herein provide good visibility for the driver and the passenger (as the wiper is able to clear a larger area and does not obstruct the vision of the driver or the passenger, when in its resting position).
[0079] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments and examples, those skilled in the art will recognize that the embodiments and examples disclosed herein can be practiced with modification within the spirit and scope of the embodiments as described herein.