New energy vehicle light rain amount control system and control method thereof

Abstract

The application discloses a new energy vehicle light rain amount control system and a control method thereof. The system comprises a light rain amount sensor, a vehicle body controller, a vehicle speed detection device, a headlamp group, a windscreen wiper and a window. The vehicle body controller is in communication connection with the light rain amount sensor, an instrument, the headlamp group, the windscreen wiper and the window. The light rain amount sensor is used for detecting the outside rain amount data and the light intensity around the vehicle body of the new energy vehicle and sending the data to the vehicle body controller. The vehicle speed detection device is used for detecting the vehicle speed of the new energy vehicle in real time and sending the vehicle speed to the vehicle body controller. The vehicle body controller is used for controlling the windscreen wiper and the window to open or close according to the outside rain amount data and controlling the headlamp group to open or close according to the light intensity around the vehicle body. The application realizes intelligent regulation and control and improves the convenience and flexibility of driving operation.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, and in particular relates to a new energy vehicle solar rainfall control system and its control method. Background Technology

[0002] New energy vehicles refer to vehicles that use new power systems such as batteries and hydrogen fuel cells to replace traditional fuels. They mainly include pure electric vehicles and hydrogen fuel cell vehicles, and are widely used in logistics transportation, urban delivery, public transportation and other fields.

[0003] Currently, new energy vehicles, as technology-intensive and capital-intensive industrial products, are inseparable from people's daily travel and freight transportation. However, during the use of new energy vehicles, drivers still need to manually operate lights, wipers, and windows, leading to driving hazards caused by distraction. Therefore, the intelligent control, ease of driving operation, and flexibility of new energy vehicles urgently need to be improved. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a new energy vehicle solar power control system and its control method to achieve intelligent regulation and improve the convenience and flexibility of driving operation.

[0005] To achieve the above-mentioned technical objectives, the present invention is implemented using the following solution: This invention provides a light and rain control system for new energy vehicles, including a light and rain sensor, a vehicle controller, a vehicle speed detection device, headlights, wipers, and windows. The vehicle controller is communicatively connected to the light and rain sensor, instrument panel, headlights, wipers, and windows. The light and rain sensor detects rainfall data outside the new energy vehicle and light intensity around the vehicle, and sends the data to the vehicle controller. The vehicle speed detection device detects the vehicle speed in real time and sends the data to the vehicle controller. The vehicle controller controls the wipers and windows to open or close based on the rainfall data outside the vehicle, and controls the headlights to open or close based on the light intensity around the vehicle.

[0006] Furthermore, the headlight assembly includes the left front headlight assembly and the right front headlight assembly.

[0007] Furthermore, it also includes an instrument panel backlight, which is connected in communication with the body controller. The body controller controls the instrument panel backlight to turn on or off based on the ambient light intensity around the vehicle.

[0008] Furthermore, it also includes a switch assembly, which is installed on the light control stalk and wiper control stalk below the steering wheel of the new energy vehicle. The switch assembly includes an automatic light switch and an automatic wiper switch. The automatic light switch and the automatic wiper switch are communicatively connected to the body controller. The automatic light switch sends the automatic light switch signal to the body controller, and the automatic wiper switch sends the automatic wiper switch signal, automatic wiper sensitivity, and wiper stop position to the body controller.

[0009] Furthermore, the light and rain sensor is fixedly installed in the inner rearview mirror bracket in the middle of the windshield of the new energy vehicle. The light and rain sensor can be wiped by one of the wiper arms of the new energy vehicle, and the detection area of ​​the light and rain sensor is within the wiping range of the wiper arm.

[0010] Furthermore, the vehicle speed detection device is an odometer sensor, which is connected to the instrument panel of the new energy vehicle. The body controller is connected to the instrument panel via a CAN bus.

[0011] Furthermore, the vehicle body controller and the light and rain sensor are connected via a LIN bus.

[0012] The present invention also provides a control method for the above-mentioned new energy vehicle solar-rainfall control system, comprising: When the body controller detects that the key of the new energy vehicle is in the ON position, the automatic light switch signal sent by the automatic light switch is valid, and the light intensity around the new energy vehicle body sent by the light rain sensor meets the conditions for lighting, the body controller drives the headlight assembly to turn on the low beam headlights and drives the instrument backlight to turn on. When the body controller detects that the key of the new energy vehicle is in the ON position and the automatic wiper switch signal sent by the automatic wiper switch is valid, and receives the external rainfall data of the new energy vehicle sent by the light rain sensor and the vehicle speed of the new energy vehicle sent by the vehicle speed detection device, which meet the working conditions of the wipers, the body controller drives the wipers to move. When the vehicle body controller detects that the key of the new energy vehicle is in the ON position and receives rain data from the light and rain sensor that meets the conditions for closing the window, the vehicle body controller drives the window to close.

[0013] Furthermore, the conditions for turning on the lights are: the light rain sensor periodically samples the top-view light signal, which is less than a set threshold, and the front-view light signal shows drastic changes; the conditions for closing the windows are: the infrared light emitted by the light rain sensor in real time periodically is reflected or refracted and then received by the light rain sensor, thus determining that it is raining outside the new energy vehicle.

[0014] Furthermore, the working conditions of the wipers are as follows: the infrared light emitted by the light rain sensor in real time and periodically is reflected or refracted and then received by the light rain sensor. The amount of rain is identified by the amplitude and time domain difference of the received infrared light signal. The amount of rain, the sensitivity of the automatic wipers, the wiper stop position and the vehicle speed signal are filtered, differentially calculated and processed by a multi-order differential model algorithm to obtain the corresponding wiper brush level and send it to the vehicle body controller. Beneficial effects

[0015] This invention features energy efficiency: the vehicle controller drives the headlights, wipers, and windows to perform corresponding actions based on vehicle speed signals from the instrument panel and external environmental signals from the light and rain sensors. This allows the lighting equipment of new energy vehicles to intelligently adjust according to the usage environment, effectively reducing unnecessary power consumption and providing an effective technical means for achieving energy conservation and emission reduction goals for new energy vehicles. This invention offers safety features: the vehicle controller drives the headlights, wipers, and windows to perform corresponding actions based on the vehicle speed signal sent by the instrument panel and the external environment signal sent by the light and rain sensors. This eliminates the need for the driver to manually turn on the lights, wipers, and close the windows during driving, avoiding safety accidents caused by the driver's distraction due to manual operation, and providing a reliable protection for the driving safety of new energy vehicles.

[0016] This invention features intelligent operation: the vehicle controller drives the headlights, wipers, and windows to perform corresponding actions based on the vehicle speed signal sent by the instrument panel and the external environment signal sent by the light and rain sensors, which greatly improves the convenience and flexibility of the driver's operation and adds core technical means to achieve the goal of intelligent control of new energy vehicles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the layout of a new energy vehicle solar-rainfall control system provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of a solar-rainfall control method for new energy vehicles provided in Embodiment 2 of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0019] like Figure 1As shown, this embodiment provides a light and rain control system for a new energy vehicle, including a body control module (BCM), a light and rain sensor (RLS), a left front headlight assembly, a right front headlight assembly, an instrument cluster, an instrument cluster backlight, wiring harness connections, a LIN bus, a CAN bus, and a switch assembly. The left front headlight assembly includes a left low beam lamp, and the right front headlight assembly includes a right low beam lamp. The BCM is the body control unit, the RLS is the signal acquisition and transmission unit, the wiring harness connections, the LIN bus, and the CAN bus are the transmission media, and the left front headlight assembly, the right front headlight assembly, the instrument cluster backlight, the wipers, and the windows are the actuators.

[0020] Furthermore, the vehicle's battery provides an external 24V power supply to the BCM. The BCM establishes a communication connection with the RLS via the LIN bus, the BCM establishes a communication connection with the instrument cluster via the CAN bus, and the BCM establishes a signal connection with the switch group via a wiring harness.

[0021] Furthermore, considering that the performance and installation location of the rain sensor have no impact on the overall aesthetics of the vehicle, the RLS is installed on the inner rearview mirror bracket in the center of the windshield using an adhesive device, and is accessible to a wiper arm, ensuring that the sensor detection area is within the wiper arm's wiping range. The BCM is located inside the right side panel of the cab, the instrument cluster is located on the cab dashboard, the switch assembly is integrated into the light control stalk and wiper control stalk below the steering wheel, the left front headlight is located on the left front side of the cab exterior, the right front headlight is located on the right front side of the cab exterior, and the instrument backlight is built into the cab instrument cluster. Example 2

[0022] like Figure 2 As shown, this embodiment provides a control method for the new energy vehicle solar-rainfall control system described in Embodiment 1, which includes the following steps: Step 1: Information Collection and Transmission Hard-wired data acquisition: The BCM acquires signals from the automatic headlight switch, automatic wiper switch, automatic wiper sensitivity, wiper stop position, and light and rain sensor via wiring harness connections. The instrument cluster acquires information from the odometer sensor, i.e., vehicle speed, via hard-wired data acquisition.

[0023] Bus transmission: The BCM and the instrument complete data communication and information exchange through the CAN bus.

[0024] Step 2: Drive the actuator Automatic headlight control: When the BCM detects a valid AUTO signal from the key switch (ON position) and the main headlight switch (AUTO position), and the RLS signal meets the headlight activation conditions, the BCM drives the low beam headlights and instrument panel backlights to turn on, providing a temporary visual respite and enhancing driving comfort and safety. The headlight activation conditions are as follows: When the headlight switch is in automatic mode, the RLS periodically samples the top-view LED signal value in real time to determine whether the low beam headlights need to be turned on or off. If the light is dim and the collected light signal value is less than a set threshold, the system outputs an automatic headlight on status. If the light is bright and the collected light signal value is greater than a set threshold, the system outputs an automatic headlight off status. Simultaneously, the system combines the forward-view LED signal value to eliminate interference from under bridges and tree shade: if the top-view light detects a sudden change in light, the sensor also checks the forward-view light for drastic changes. If no drastic change is detected, no headlight activation signal is sent. Finally, the RLS outputs this signal to the BCM to drive the low beam headlights.

[0025] Automatic wiper control: When the BCM receives a hard-wired signal indicating that the automatic wiper switch is on, the key is in the ON position, and the received RLS signal meets the wiper operating conditions, the BCM drives the wipers and automatically adjusts the wiper speed according to the amount of rain. Specifically, when the wiper switch is in automatic mode, the RLS periodically sends infrared light in real time. If the infrared light is blocked by raindrops, it will be reflected or refracted. The RLS identifies the amount of rain by using both the amplitude and time-domain difference of the received infrared light signal. Combining this with parameters such as automatic wiper sensitivity, wiper stop position, and vehicle speed, and after filtering, differential calculation, and multi-order difference model algorithms, it calculates the required wiper speed and sends this speed to the BCM via the LIN bus. The BCM then drives the wiper motor. The adjustment or maintenance of the wiper speed is controlled by the RLS. The system makes judgments based on signal values ​​such as rainfall amount, automatic wiper sensitivity, wiper stop position (used to determine whether a wiping action has been completed), and vehicle speed. When the detected real-time rainfall signal value is greater than a set threshold, the RLS outputs a single wipe, i.e., intermittent wiping mode. Under the same rainfall amount, the higher the automatic wiper sensitivity, the shorter the interval, and vice versa. Under the same rainfall conditions, the faster the vehicle speed, the faster the oncoming wind will spread the rainwater to the windshield, so the wiper interval should be shortened or the wiping frequency should be increased.

[0026] Automatic window control: When the BCM detects that the key is in the ON position and receives the RLS signal that meets the automatic window closing conditions, the BCM drives the driver and passenger window motors to automatically close the windows. The automatic window closing conditions are as follows: when the wiper switch is in automatic mode, the RLS periodically sends infrared light in real time. If the infrared light is blocked by raindrops, it will be reflected or refracted. The RLS receives the reflected or refracted infrared light signal, determines that it is raining outside the new energy vehicle, and then outputs a window closing signal to the BCM to drive the driver and passenger windows to close automatically.

[0027] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A solar-rainfall control system for new energy vehicles, characterized in that, The system includes a light and rain sensor, a body controller, a vehicle speed detection device, headlights, wipers, and windows. The body controller communicates with the light and rain sensor, instrument panel, headlights, wipers, and windows. The light and rain sensor detects rainfall data outside the vehicle and light intensity around the vehicle, and sends this data to the body controller. The vehicle speed detection device detects the vehicle speed in real time and sends this data to the body controller. The body controller controls the wipers and windows to open or close based on rainfall data outside the vehicle, and controls the headlights to open or close based on light intensity around the vehicle.

2. The new energy vehicle solar-rainfall control system according to claim 1, characterized in that, The front headlight assembly includes the left front headlight assembly and the right front headlight assembly.

3. The new energy vehicle solar-rainfall control system according to claim 1, characterized in that, It also includes instrument panel backlights, which are connected to the body control unit. The body control unit controls the instrument panel backlights to turn on or off based on the ambient light intensity around the vehicle.

4. The new energy vehicle solar-rainfall control system according to claim 1, characterized in that, It also includes a switch assembly, which is located on the light control stalk and wiper control stalk below the steering wheel of the new energy vehicle. The switch assembly includes an automatic light switch and an automatic wiper switch. The automatic light switch and the automatic wiper switch are connected to the body controller. The automatic light switch sends the automatic light switch signal to the body controller, and the automatic wiper switch sends the automatic wiper switch signal, automatic wiper sensitivity and wiper stop position to the body controller.

5. The new energy vehicle solar-rainfall control system according to claim 1, characterized in that, The light and rain sensor is fixedly installed in the inner rearview mirror bracket in the middle of the windshield of the new energy vehicle. The light and rain sensor can be wiped by one of the wiper arms of the new energy vehicle and the detection area of ​​the light and rain sensor is within the wiping range of the wiper arm.

6. The new energy vehicle solar-rainfall control system according to claim 1, characterized in that, The vehicle speed detection device is an odometer sensor, which is connected to the instrument panel of the new energy vehicle. The body controller is connected to the instrument panel via a CAN bus.

7. The new energy vehicle solar-rainfall control system according to claim 1, characterized in that, The vehicle body controller and the light and rain sensor are connected via a LIN bus.

8. A control method for a new energy vehicle solar-rainfall control system according to any one of claims 1 to 7, characterized in that, include: When the body controller detects that the key of the new energy vehicle is in the ON position, the automatic light switch signal sent by the automatic light switch is valid, and the light intensity around the new energy vehicle body sent by the light rain sensor meets the conditions for lighting, the body controller drives the headlight assembly to turn on the low beam headlights and drives the instrument backlight to turn on. When the body controller detects that the key of the new energy vehicle is in the ON position and the automatic wiper switch signal sent by the automatic wiper switch is valid, and receives the external rainfall data of the new energy vehicle sent by the light rain sensor and the vehicle speed of the new energy vehicle sent by the vehicle speed detection device, which meet the working conditions of the wipers, the body controller drives the wipers to move. When the vehicle controller detects that the key of the new energy vehicle is in the ON position and receives rain data from the light and rain sensor that meets the conditions for closing the window, the vehicle controller drives the window to close.

9. The control method for the new energy vehicle solar-rainfall control system according to claim 8, characterized in that, The conditions for turning on the lights are: the light rain sensor periodically samples the top-view light signal, which is less than a set threshold, and the front-view light signal shows drastic changes; the conditions for closing the windows are: the infrared light emitted by the light rain sensor in real time periodically is reflected or refracted and then received by the light rain sensor to determine that it is raining outside the new energy vehicle.

10. The control method for the new energy vehicle solar-rainfall control system according to claim 8, characterized in that, The working conditions of the wipers are as follows: the infrared light emitted by the light rain sensor in real time and periodically is reflected or refracted and then received by the light rain sensor. The amount of rain is identified by the amplitude and time domain difference of the received infrared light signal. The rain amount, automatic wiper sensitivity, wiper stop position and vehicle speed signals are filtered, differentially calculated and processed by multi-order differential model algorithm to obtain the corresponding wiper brush level and send it to the vehicle body controller.

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