, Description:A WIPER CONTROLLING SYSTEM FOR MOTOR VEHICLE
FIELD OF INVENTION:
[001] The present subject matter described herein, relates to a wiper controlling system for a motor vehicle. The present subject matter, in particular, relates to a system for controlling the operation of wiper and washer pump to clean windscreen of the motor vehicle.
BACKGROUND AND PRIOR ART AND PROBLEM IN PRIOR ART:
[002] A clean windscreen is essential while driving, to avoid fatal accidents. During rainfall or misty season (when the air is thick with moisture), the windscreen becomes translucent and in few instances opaque as well and driving in those conditions becomes perilous. Also, in dusty conditions, such as at construction sites and in big industries, a layer of dust is often accumulated on the windscreen making it opaque to the driver or operator.
[003] Referring to Figure 1, illustrating an existing wiper controlling system for a motor vehicle. The wiper controlling system 100 comprises a wiper coupled with an electric motor 101 which by its to and fro movement mops the windscreen clean. To remove the dust from the windscreen, usually a water pump 102 is also provided in the wiper controlling system 100. The water pump 102 washes the windscreen with water and the wiper clean the water from the windscreen.
[004] Operation of the wiper and the water motor 101 is controlled by the controlling unit 103 provided in the wiper controlling system 100. The controlling unit is a comprehensive unit which operates functions of motor vehicles such as head lights, dipper, door control etc. Various ports are provided in the controlling unit for these operations. These ports are connected with various controlling sub-units in the controlling unit. Different controlling sub-units are provided for performing various functions, such as, operation of head lights, dipper, door control, wiper control, washer pump control, etc.
[005] In dusty conditions, such as at construction sites and in big industries, when water is sprayed on the accumulated dust it becomes mud. To clear the mud, more power is needed by the controlling sub-units 104a, 104b, 104c, 104d designated for the operation of the wiper motor. The controlling sub-units 104a, 104b, 104c, 104d draw more power from the battery, which burns the contacts and affect the working of the controlling sub-units 104a, 104b, 104c, 104d designated to control the wiper. The burning of contacts sometimes leads to disruption of other operations of the controlling unit, such as, head lights, dipper, door control etc. To restore the operations, whole of the controlling unit has to be changed which is expansive.
[006] To address the above issues an innovative wiper controlling system 200 for motor vehicle is proposed. The wiper controlling system 200 is completely isolated from the controlling unit. Further, the wiper controlling system 200 is created to handle relatively more power to clean the mud from the windscreen.
[007] The information disclosed in this background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
OBJECTS OF THE INVENTION:
[008] It is therefore the object of the invention to overcome the aforementioned and other drawbacks in prior method/product/apparatus.
[009] The principal objective of the present invention is to develop a wiper controlling system for a motor vehicle which can withstand relatively more power than conventional wiper controlling systems.
[0010] Another object of the present invention is to develop a wiper controlling system for a motor vehicle which is isolated from the controlling unit of the vehicle.
[0011] Another object of the present invention is to develop a wiper controlling system for a motor vehicle which is easy to replace during maintenance.
[0012] Yet another object of the present invention is to develop a wiper controlling system for a motor vehicle which is easily replaceable without disturbing other functions of the controlling unit.
[0013] Yet another object of the present invention is to develop a wiper controlling system for a motor vehicle which is economical.
[0014] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.
SUMMARY OF THE INVENTION:
[0015] One or more drawbacks of conventional wiper controlling system for motor vehicles, and additional advantages are provided through the system as claimed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0016] The present subject matter relates to a wiper controlling system of a motor vehicle. The system includes an electrical source, an electric motor mechanically coupled to windscreen wiper blades of a motor vehicle, a water pump for spraying water on the windscreen of the motor vehicle, a solid state relay adapted to receive electrical signal(s) from the electrical source and operate the electric motor by sending control signal(s) in conformity with received electrical signal(s), and a plurality of switches (S1, S2) having a close operating state and an open operating state adapted to control electrical signal(s) sent to the solid state relay. Operating state of the plurality of switches (S1, S2) alter between the close operating state and the open operating state based on the mode of operation selected on a wiper operating lever of the motor vehicle.
[0017] In an aspect, the electric motor operates in either a first switching state or a second switching state or a third switching state depending on the control signal send by the solid state relay.
[0018] In an aspect, the electrical signal(s), corresponding to the selected first switching state or the second switching state or the third switching state, sent to the solid state relay depends on the mode of operation selected on the wiper operating lever of the motor vehicle.
[0019] In an aspect, the first switching state, the electric motor moves the wiper blades in a continuous operation resulting in continuous to and fro movement of the wiper.
[0020] In an aspect, the second switching state, the electric motor moves the wiper blades in an intermittent operation resulting in intermittent movement of the wiper.
[0021] In an aspect, the third switching state, the electric motor moves the wiper blades in a variable speed rotation operation resulting in to and from movement of the wiper with variable speed.
[0022] In an aspect, the switch S1, in close operating state, provides electric signal to the solid state relay to actuate the electric motor in either one of its three switching state.
[0023] In an aspect, the switch S2, in close operating state, provides electric signal to the solid state relay and water pump to actuate the electric motor and the water pump simultaneously.
[0024] In an aspect, the electrical signal depends on the mode of operation selected on wiper operating lever of the motor vehicle.
[0025] In an aspect, a fuse is provided in the system to protect the solid state relay from exposure to high current.
[0026] In an aspect, the control signal sent from the solid state relay is in the form of Electrical Signal.
[0027] In an aspect, the electrical signal send to the solid state relay is in the form of Voltage Signal
[0028] In an aspect, the electrical source is the motor vehicle battery.
[0029] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.
[0030] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0032] Fig. 1 illustrates a circuit diagram of existing wiper controlling system; and
[0033] Fig. 2 illustrates a wiper controlling system in accordance with one of the embodiments of present subject matter.
[0034] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0035] While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof have been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.
[0036] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.
[0037] The present subject matter relates to a wiper controlling system 200 for a motor vehicle. In the proposed wiper controlling system 200, the various controlling sub-units 104a, 104b, 104c, 104d, as shown in Fig. 1, of existing wiper controlling system 100, are replaced with one solid state relay which reduces the cost of manufacturing. Further, the proposed wiper controlling system 200 can handle more power to clean the windscreen at construction sites and in adverse conditions. Furthermore, the proposed wiper controlling system 200 is isolated from the controlling unit of the vehicle to obviate any potential burning of contacts of the controlling unit. By virtue of being isolated from the controlling unit, the proposed wiper controlling system 200 is easily replaceable without disturbing other functions of the controlling unit. This also considerably reduces the replacement cost of the system, in case, malfunctioning happen.
[0038] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.
[0039] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0040] Referring to Figure 2, illustrating the circuit diagram of the proposed wiper controlling system 200. The wiper controlling system 200 comprises an electrical source 202, an electric motor 203 mechanically coupled to windscreen wipers, a water pump 204, a solid state relay 201, a fuse 205 and a plurality of switches S1 and S2. The system 200 is controlled by a wiper operating lever, generally provided adjacent to the steering wheel. Further, the electrical source 202 is preferably the motor vehicle battery. The motor vehicle battery is the main source of power and provides the driving power to the electric motor 203, the water pump 204 and the solid state relay 201. The fuse 205 is provided to cut off the supply from the electrical source 202 when a predetermined current value is breached.
[0041] The electric motor 203 has three modes of operation, namely, first switching state, second switching state and third switching state. These switching states categorizes the modes of operation as per the user’s requirement. The first switching state is a continuous operation state, wherein the electric motor 203 continuously moves the wiper blades in to and fro movements. The second switching state is an intermittent operation state, wherein the electric motor 203 intermittently moves the wiper blades with a momentarily stop between each wipe. The third switching state is a variable speed operation state, wherein the electric motor 203 moves the wiper blades in to and fro movements with variable speeds, as per driver’s requirement.
[0042] The solid state relay 201 is provided to control the operation of the electric motor 203 and to provide coordination between the working of the electric motor 203 and the water pump 204. The solid state relay 201 is adapted to receive electrical signal(s) from the electrical source 202. The received electric signal(s) are then evaluated by the solid state relay 201 and send the control signal(s) to the electric motor 203 in conformity with the received electrical signal(s). The control signal(s) sent by the solid state relay 201 control(s) the operation of the electric motor 203 by changing the magnitude and direction of the magnetic field around the armature of the electric motor 203.
[0043] The electrical signal(s) sent to the solid state relay 201 are controlled by the plurality of switches S1 and S2. Both the switches, S1 and S2, have two operating states, namely, an open operating state and a close operating state. The switching of states is done depending on the mode of operation selected on wiper operating lever of the motor vehicle.
[0044] When the switch S2 is in close operating state and switch S1 is in open operating state, the electric signal(s) send by the electric source 202 drive(s) the water pump 204 directly and send an electric signal(s) to the solid state relay 201 to drive the electric motor 203 in either one of its switching states.
[0045] When the switch S1 is in close operating state and switch S2 is in open operating state, the electrical signal(s) is/are send to the solid state relay 201 and electrical signal(s) to the water pump is cut off. The solid state relay 201, based on the received electrical signal(s), sends the control signal(s) to the electric motor 203. These control signal(s) drive the electric motor 203 in either one of its switching states.
WORKING OF THE WIPER CONTROLLING SYSTEM
WHEN OPERATION OF BOTH WATER PUMP AND WIPER MOTOR IS REQUIRED:
[0046] At construction sites or in dusty environment, drivers have to clean the windscreen quite often. To clean the dust from the windscreen, operation of both water pump 204 and wiper is required. To operate the water pump 204, spray water option is selected on the wiper operating lever. This mode of operation brings the switch S2 in close operating state and switch S1 in open operating state. The switch S2 feed direct electrical signal(s) to the water motor 204 and an electric signal(s) is sent to the solid state relay 201. The solid state relay generates a control signal(s) in accordance with the received electrical signal(s) and sent the generated control signal(s) to the electric motor 203 to drive the electric motor 203 simultaneously with the water pump 204.
[0047] As solid relay 201 can withstand more power in comparison to the conventional sub-units 104a, 104b, 104c, 104d, the proposed wiper controlling system 200 effectively clears the windscreen in dusty conditions. Further, as the proposed system 200 is isolated from the controlling unit, it is easier to replace in case any malfunction occurs. Furthermore, replacement is economical because instead of replacing whole controlling unit only wiper controlling system 200 is being replaced.
WHEN OPERATION OF ONLY WIPER MOTOR IS REQUIRED:
[0048] During rain or misty weather, drivers have to clean the windscreen continuously in order to clearly see the road ahead. In these conditions, only operation of wiper is required. To operate the wiper, wiper movement option is selected on the wiper operating lever. This mode of operation brings the switch S1 in close operating state and switch S2 in open operating state. As the switch S2 is in open operating state, the water pump 204 does not get any electrical signal to operate. By virtue of switch S1 being in close operating state, the solid state relay gets an electric signal(s) from the electric source 202. The solid state relay 201 generates a control signal(s) in accordance with the received electrical signal(s) and send the generated control signal(s) to the electric motor 203 to drive the electric motor 203 in either one of its switching states.
[0049] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
[0050] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.
[0051] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

Claims:We claim:
1. A wiper controlling system (200) for motor vehicles, the system (200) comprises:
an electrical source (202);
an electric motor (203) mechanically coupled to windscreen wiper blades of a motor vehicle;
a water pump (204) for spraying water on the windscreen of the motor vehicle;
a solid state relay (201) adapted to receive electrical signal(s) from the electrical source (202) and operate the electric motor (203) by sending control signal(s) in conformity with received electrical signal(s); and
a plurality of switches (S1, S2) having a close operating state and an open operating state adapted to control electrical signal(s) sent to the solid state relay (201);
wherein operating state of the plurality of switches (S1, S2) alter between the close operating state and the open operating state based on the mode of operation selected on a wiper operating lever of the motor vehicle.
2. The wiper controlling system (200) as claimed in claim 1, wherein the electric motor (203) operates in either a first switching state or a second switching state or a third switching state depending on the control signal(s) send by the solid state relay (201).
3. The wiper controlling system (200) as claimed in claim 1, wherein the electrical signal(s), corresponding to the selected first switching state or the second switching state or the third switching state, sent to the solid state relay (201) depends on the mode of operation selected on the wiper operating lever of the motor vehicle.

4. The wiper controlling system (200) as claimed in claim 2, wherein in the first switching state, the electric motor (203) moves the wiper blades in a continuous operation resulting in continuous to and fro movement of the wiper.

5. The wiper controlling system (200) as claimed in claim 2, wherein in the second switching state, the electric motor (203) moves the wiper blades in an intermittent operation resulting in intermittent movement of the wiper.

6. The wiper controlling system (200) as claimed in claim 2, wherein in the third switching state, the electric motor (203) moves the wiper blades in a variable speed rotation operation resulting in to and from movement of the wiper with variable speed.

7. The wiper controlling system (200) as claimed in claim 1, wherein the switch S1, in close operating state, provides electric signal(s) to the solid state relay (201) to actuate the electric motor (203) in either one of its three switching state.

8. The wiper controlling system (200) as claimed in claim 1, wherein the switch S2, in close operating state, provides electric signal(s) to the solid state relay (201) and water pump (204) to actuate the electric motor (203) and the water pump (204) simultaneously.

9. The wiper controlling system (200) as claimed in claim 1, wherein the electrical signal(s) depends on the mode of operation selected on wiper operating lever of the motor vehicle.

10. The wiper controlling system (200) as claimed in claim 1, wherein a fuse (205) is provided in the system (200) to cut off the supply from the electrical source (202) when a predetermined current value is breached.

11. The wiper controlling system (200) as claimed in claim 1, wherein the control signal(s) sent from the solid state relay (201) is in the form of Electrical Signal.

12. The wiper controlling system (200) as claimed in claim 1, wherein the electrical signal(s) send to the solid state relay (201) is in the form of Voltage Signal.

13. The wiper controlling system (200) as claimed in claim 1, wherein the electrical source (202) is the motor vehicle battery.