DESC:FIELD OF THE INVENTION
The present invention relates to the field of speed limit alert system for road transport vehicles. More particularly, the present invention relates to the field of driver assist speed limit alert system for road transport vehicles in response to the speed limit restrictions prevailing on the different road sections.

BACKGROUND OF THE INVENTION
A vehicle speed governer is a device used to control the speed of the engine in order to limit the vehicle speed to the pre-specified value. Strigent speed practices are followed to pre-set the speed limits (i.e, static speed limit) in vehicles and the static speed limits vary depending on the type of vehicle. A typical speed limit alert/speed governor installed in the vehicle is to alert the driver and to control the vehicle speed based on the factory set value (i.e. 80 kmph/static speed) as per rules of Road Transport Authority.

Conversely, speed limits vary depending on the type of location such as intercity roads, express roads, state and national highway roads and vehicle type (i.e, Two wheelers, Commercial vehicles, Passenger vehicles, etc.,). Therefore, static speed limits fail to suite different road speeds due to dynamic road environments. In the light of the above, vehicle drivers are instructed to maintain speed limits based the locations and vehicle types by providing them with sign boards to give information about the speed limits.

The speed limit sign boards are installed at different locations on the road sides in order to notify the driver of the vehicle to provide instructions on the speed limit. Although the sign boards provides information of speed limit applicable to the particular stretch, drivers may neglect the speed signboards inadvertently/intenionally. Some drivers may rash drive (80 kmph or according to the vehicle type) inspite of that he/she knew the city speed limit and thereby resulting accident.

On the other hand, if speed of the vehicle is pre-set and limited to lower speeds by using governor device/speed limiting device, then transportation may not effective due to the constraint lower speeds which further decreases the transport efficiency. Automated driving system can be installed in vehicles to control the speed limit but such system cannot be adapted in dynamic roads and leads to increase in expense of the vehicle.

Accordingly, there exist a need for a low cost driver assist speedlimit alert system for road transport vehicles to assist the drivers for providing information on the speed limit restrictions prevailing on different road sections.

OBJECT OF THE INVENTION
It is the primary object of the present invention to provide a driver assist speed limit alert system for road transport vehicles to assist the drivers in providing information on the speed limit restrictions prevailing on different road sections.

It is another object of the present invention to provide a driver assist speed limit alert system for road transport vehicles to provide speed limit information to the driver in response to the speed limit on the sign boards.

It is another object of the present invention is to provide a driver assist speed limit alert system for road transport vehicles wherein the speed limit information transmitter device in speed limit signboards is configured to transmit dynamic speed limit information to the vehicle by wireless means.

It is another object of the present invention is to provide driver assist speed limit alert system for road transport vehicles wherein the speed limit information transmitter device has a Bluetooth Low Energy.
It is another object of the present invention is to provide driver assist speed limit alert system for road transport vehicles wherein a rechargeable lithium-ionbattery is provided to supply power to the speed limit information transmitter device fitted in the speed limit signboards.

It is another object of the present invention is to provide driver assist speed limit alert system for road transport vehicles wherein a mini-solar panel is fixated on the speed limit signboards to recharge the lithium-ion battery.

It is another object of the present to provide a driver assist speed limit alert system for road transport vehicles wherein a standalone Bluetooth (BLE) module is configured to receive the dynamic speed limit information from the speed limit information transmitter device wirelessly.

It is another object of the present invention to provide a driver assist speed limit alert system for road transport vehicles wherin the over-speed alert to the driver is provided by the Driver Information System (DIS) by visual and /or audio means.

It is another object of the present invention to provide a driver assist speed limit alert system for road transport vehicles wherein over speed data is stored in a server by a Bluetooth (BLE) enabled mobile device through a cellular network [2G/3G/4G/5G].
SUMMARY OF THE INVENTION
Thus according to the embodiment of the present invention there is provided a driver assist speed limit alert system to collect information from a speed limit signal boards that are installed on the sides of the road comprising a Bluetooth enabled Driver Information System [DIS] integrated in a vehicle, an Engine Control Unit [ECU] fitted to the vehicle is configured with the Bluetooth enabled DIS through a Control Area Network [CAN], a Bluetooth enabled user device with a Global System for Cellular network [2G/3G/4G/5G], a server and a speed sensor disposed inside the vehicle is connected to the ECU.

It is another aspect of the present invention, wherein the speed limit signal boards are provided with a transmitter device.

It is another aspect of the present invention, wherein the transmitter device comprises a Bluetooth Low Energy enabled device.

It is another aspect of the present invention, wherein the Bluetooth enabled DIS is configured to wirelessly receive the dynamic speed limit information from the transmitter device.

It is another aspect of the present invention, wherein the ECU compares the dynamic speed limit information received from the transmitter device and current speed of the vehicle from the speed sensor and further provides input to the Bluetooth enabled DIS.

It is another aspect of the present invention, wherein the Bluetooth enabled DIS provides input to the user device to provide visual and audio alerts of the dynamic speed limit to the driver.

According to the another embodiment of the present invention, a driver assist speed limit alert system to collect information from a speed limit signal board that are installed on the sides of the road comprising a Driver Information System [DIS] integrated in a vehicle, an Engine Control Unit [ECU] of the vehicle configured with the Driver Information System through a Control Area Network [CAN], a Bluetooth enabled user device with a Global System for Cellular network [2G/3G/4G/5G], a server and a speed sensor disposed inside the vehicle is connected to the ECU.

It is another aspect of the present invention, wherein a standalone Bluetooth enabled module is configured to the DIS.

It is another aspect of the present invention, wherein the speed limit signboards are provided with a transmitter device.
It is another aspect of the present invention, wherein the transmitter device comprises a Bluetooth Low Energy enabled device.

It is another aspect of the present invention, wherein the DIS is configured to wirelessly receive the dynamic speed limit information from the transmitter device.
It is another aspect of the present invention, wherein the ECU compares the dynamic speed limit information received from the transmitter device and current speed of the vehicle from the speed sensor and further provides input to the Bluetooth enabled DIS.

It is another aspect of the present invention, wherein the DIS provides input to the user device to provide visual and audio alerts of the dynamic speed limit to the driver.

It is another aspect of the present invention, wherein speed limit signboards containing the speed limit data of the road is configured through a mobile or handheld device with authentication through server.

It is another aspect of the present invention, wherein the transmitter device is powered by a rechargeable lithium-ion battery.

It is another aspect of the present invention, wherein a mini-solar panel is fixated on the speed limit signboard to recharge the lithium-ion battery during the daylight.
It is another aspect of the present invention, wherein Bluetooth enabled DIS further communicates the information to the Bluetooth enabled mobile device (s) and further stores the violation data with location and time stamp in the server through Cellular network [2G/3G/4G/5G].

According to yet another embodiment of the present invention, the method of working of driver assist speed limit alert system to collect information from speed limit sign board comprises the steps of passing the speed limit sign boards by the moving vehicle; transmitting the configured dynamic speed limit data of the speed limit sign board by the transmitter device through the Bluetooth low energy device; receiving the dynamic speed limit data by the DIS fitted in the vehicle; transferring the dynamic speed limit data to the ECU of the vehicle; acquiring the current speed of the vehicle through the speed sensor and transferring the data to the ECU; comparing the acquired dynamic speed limit data with the current speed of the vehicle by the ECU; alerting the driver of the vehicle by visual and audio means through the DIS by the ECU, if current speed of the vehicle exceeds the dynamic speed limit; alerting the driver through Bluetooth(BLE) enabled user device by the DIS; and storing the exceeded speed limit data in the server by the user device through the Cellular network [2G/3G/4G/5G].

BRIEF DESCRIPTION OF THE DRAWINGS:
Figure 1: schematically illustrates the primary embodiment of the driver assist speed limit alert system for vehicles according to the present invention.

Figure 2: illustrates the block diagram of the primary embodiment of driver assist speed limit alert system for vehicles according to the present invention

Figure 3: schematically illustrates the secondary embodiment of the driver assist speed limit alert system for vehicles according to the present invention.

Figure 4: illustrates the block diagram of the secondary embodiment of driver assist speed limit alert system for vehicles according to the present invention.

Figure 5: illustrates the speed limit alert representation in Driver Information System.

Figure 6: illustrates the flow diagram of the driver assist speed limit alert system for road transport vehicles according to the present invention.

DESCRIPTION OF INVENTION
According to the primary embodiment of the present invention, there is provided a driver assist speed limit alert system (100) for road transport vehicles which provides alert on speed limit to the drivers from the speed limit sign boards using radio frequency. The invention uses Bluetooth (BLE) enabled speed limit sign boards as shown in figure 1. Normally, the speed limit sign boards (101) are installed on the sides of the road to notify the driver of the vehicle on the speed limit prevailing in that particular section of the road. A transmitter device (102) is installed in the speed limit signboards (101) containing the speed limit data of the section of road which is configured through a mobile or handheld device with authentication through server (140) (for example, 45kmph speed limit). As shown in figure 1 and 2, the transmitter device (102) comprising a Bluetooth Low Energy enabled device (103) powered by a rechargeable lithium-ion battery (104) which is provided to supply power to the transmitter device (102). Further, a mini-solar panel (105) is fixated on the speed limit signboard (101) to recharge the lithium-ion battery during the daylight.

A Bluetooth enabled Driver Information System [DIS] is integrated and disposed inside a vehicle (110). The transmitter device (102) in the speed limit signboards (101) is configured to transfer dynamic speed limit information wirelessly to Bluetooth enabled integrated Driver Information System [DIS] (111a). Initially, the transmitter device (102) is pre-configured with factory set value. The speed limit information in the transmitted device (102) is modified based on the speed limit signboards (101) by configuring the data through mobile or handheld device. The Bluetooth enabled DIS (111a) is configured to wirelessly receive the dynamic speed limit information from the transmitter device (102) while the vehicle (110) reaches the vicinity of the respective speed limit signboards (101).

An Engine Control Unit [ECU] (112) is fitted to the vehicle (110) and is configured with the Bluetooth enabled DIS (111a) through a Control Area Network [CAN] (114). Further, a speed sensor (113) is disposed inside the vehicle (110) and connected to the ECU (112). The speed sensor (113) acquires the current vehicle speed of the vehicle during driving and transfers the current speed information to the ECU (112).

As the vehicle approaches the speed limit signboards (101), the ECU (112) compares the dynamic speed limit information received from the transmitter device (102) in the speed limit signboards (101) and current speed of the vehicle through the speed sensor (113). The Bluetooth enabled DIS (111a) provides visual and audio alerts of the dynamic speed limit information based on the inputs provided by ECU (112) to the driver of the vehicle if the vehicle speed is more than the permitted speed stipulated by the respective speed limit signboard (101).

As shown in figure 3 and 4, according to another embodiment of the present invention, a standalone Bluetooth enabled module (111c) is installed in the vehicle (110). The Bluetooth enabled module (111c) is configured to the DIS (111b) through the Controller Area Network (CAN) (114). The standalone Bluetooth enabled module (111c) is configured to wirelessly receive the dynamic speed limit information from the speed limit information transmitter device (102) fitted in the speed limit sign boards (101). The dynamic speed limit information is acquired by the DIS (111b) from the Bluetooth enabled module (111c) is further transferred to the ECU (112) for comparing the speed limits.

As illustrated in figure 5, the current speed limit exceeding the dynamic speed limit is shown in different color and an audio alert is also provided by the DIS (111a or 111b). Further, the current speed limit of the road is also displayed for information to driver in the DIS (1111a or 111b).

As shown in figure 6, assuming that the speed of the vehicle exceeds the dynamic speed limit, the DIS (111a or 111b) provides visual and audio alerts of the dynamic speed limit information based on the inputs provided by ECU (112). On the course of driving the vehicle (110), when the vehicle (110) approaches different speed limit signboards (101) in the road, the ECU (112) compares the dynamic speed limits of the particular signboards (101) with the current speed of the vehicle and alerts the driver through the DIS (111a or 111b). Further a Bluetooth enabled user device (120) with a Global System for Cellular network [2G/3G/4G/5G] (130) of the drivers is wirelessly connected to the Bluetooth enabled DIS (111a) or DIS (111b) through the Bluetooth enabled module (111c). The driver is alerted through Bluetooth enabled user device (120) by the DIS (111a or 111b) if the vehicle speed exceeds the dynamic speed limit.

Further, the user device (120) is connected to a server (140) in which the event of speed limit violations are stored in the server (140) with location and time stamp by the user device (120) through the Cellular network [2G/3G/4G/5G] (130).

Although the invention has been described with reference to specific embodiments, these descriptions are not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the invention will become apparent to persons skilled in the art upon reference to the description of the invention. It should be appreciated by those skilled in the art that the conception and the 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 invention. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the scope of the invention as set forth in the appended claims. It is therefore, contemplated that the claims will cover any such modifications or embodiments that fall within the true scope of the invention.
,CLAIMS:WE CLAIM:
1. A driver assist speed limit alert system (100) to collect information from a speed limit signal boards (101) that are installed on the sides of the road comprising:
a Bluetooth enabled Driver Information System [DIS] (111a) integrated in a vehicle (110);
an Engine Control Unit [ECU] (112) fitted to the vehicle (110) is configured with the Bluetooth enabled DIS (111a) through a Control Area Network [CAN] (114);
a Bluetooth enabled user device (120) with a Global System for Cellular network [2G/3G/4G/5G] (130);
a server (140); and
a speed sensor (113) disposed inside the vehicle (110) is connected to the ECU (112),
wherein the speed limit signal boards (101) are provided with a transmitter device (102),
wherein the transmitter device (102) comprises a Bluetooth Low Energy enabled device (103),
wherein the Bluetooth enabled DIS (111a) is configured to wirelessly receive the dynamic speed limit information from the transmitter device (102),
wherein the ECU (112) compares the dynamic speed limit information received from the transmitter device (102) and current speed of the vehicle from the speed sensor (113) and further provides input to the Bluetooth enabled DIS (111a), and
wherein the Bluetooth enabled DIS (111a) provides input to the user device (120) to provide visual and audio alerts of the dynamic speed limit to the driver.

2. A driver assist speed limit alert system (200) to collect information from a speed limit signal board (101) that are installed on the sides of the road comprising:
a Driver Information System [DIS] (111b) integrated in a vehicle (110);
an Engine Control Unit [ECU] (112) of the vehicle (110) configured with the Driver Information System (111b) through a Control Area Network [CAN] (114);
a Bluetooth enabled user device (120) with a Global System for Cellular network [2G/3G/4G/5G] (130);
a server (140); and
a speed sensor (113) disposed inside the vehicle (110) is connected to the ECU (112),
wherein a standalone Bluetooth enabled module (111c) is configured to the DIS (111b),
wherein the speed limit signboards (101) are provided with a transmitter device (102),
wherein the transmitter device (102) comprises a Bluetooth Low Energy enabled device (103),
wherein the DIS (111b) is configured to wirelessly receive the dynamic speed limit information from the transmitter device (102),
wherein the ECU (112) compares the dynamic speed limit information received from the transmitter device (102) and current speed of the vehicle from the speed sensor (113) and further provides input to the Bluetooth enabled DIS (111a), and
wherein the DIS (111b) provides input to the user device (120) to provide visual and audio alerts of the dynamic speed limit to the driver.

3. The driver assist speed limit alert system (100) to collect information from a speed limit signal board (101) as claimed in claim 1, wherein speed limit signboards (101) containing the speed limit data of the road is configured through a mobile or handheld device with authentication through server (140).

4. The driver assist speed limit alert system (200) to collect information from a speed limit signal board (101) as claimed in claim 2, wherein speed limit signboards (101) containing the speed limit data of the road is configured through a mobile or handheld device with authentication through server (140).

5. The driver assist speed limit alert system (100) to collect information from a speed limit signal board (101) as claimed in claim 1, wherein the transmitter device (102) is powered by a rechargeable lithium-ion battery (104).

6. The driver assist speed limit alert system (200) to collect information from a speed limit signal board (101) as claimed in claim 2, wherein the transmitter device (102) is powered by a rechargeable lithium-ion battery (104).

7. The driver assist speed limit alert system (100) to collect information from a speed limit signal board (101) as claimed in claim 1, wherein a mini-solar panel (105) is fixated on the speed limit signboard (101) to recharge the lithium-ion battery during the daylight.

8. The driver assist speed limit alert system (200) to collect information from a speed limit signal board (101) as claimed in claim 2, wherein a mini-solar panel (105) is fixated on the speed limit signboard (101) to recharge the lithium-ion battery during the daylight.

9. The driver assist speed limit alert system (100) to collect information from a speed limit signal board (101) as claimed in claim 1, wherein Bluetooth enabled DIS (111a) further communicates the information to the Bluetooth enabled mobile device (s) (120) and further stores the violation data with location and time stamp in the server (140) through Cellular network [2G/3G/4G/5G] (130);
10. The driver assist speed limit alert system (200) to collect information from a speed limit signal board (101) as claimed in claim 2, wherein Bluetooth enabled DIS (111a) further communicates the information to the Bluetooth enabled mobile device (s) (120) and further stores the violation data with location and time stamp in the server (140) through Cellular network [2G/3G/4G/5G] (130);

11. The method of working of driver assist speed limit alert system (100 and 200) to collect information from speed limit sign board (101) comprises the steps of;
passing the speed limit sign boards (101) by the moving vehicle (110);
transmitting the configured dynamic speed limit data of the speed limit sign board (101) by the transmitter device (102) through the Bluetooth low energy device (103);
receiving the dynamic speed limit data by the DIS (111a or 111b) fitted in the vehicle (110);
transferring the dynamic speed limit data to the ECU (112) of the vehicle (110);
acquiring the current speed of the vehicle (110) through the speed sensor (113) and transferring the data to the ECU (112);
comparing the acquired dynamic speed limit data with the current speed of the vehicle (110) by the ECU (112);
alerting the driver of the vehicle by visual and audio means through the DIS (111a or 111b) by the ECU (112), if current speed of the vehicle (110) exceeds the dynamic speed limit;
alerting the driver through Bluetooth(BLE) enabled user device (120) by the DIS (111a or 111b); and
storing the exceeded speed limit data in the server (140) by the user device (120) through the Cellular network [2G/3G/4G/5G] (130).