Automatic switching system for high beam and low beam of automobile
By integrating the environment monitor and the car distance monitor in the car, combining the control core and the Internet of Things module, intelligent automatic switching of high and low beams is achieved, which solves the problem of untimely or misused switching caused by manual operations, and reduces traffic The accident has promoted the intelligent development of vehicles and driving safety.
Patent Information
- Application Number
- CN202421294409.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, drivers need to manually operate the switching of high and low beams of the car, resulting in untimely or misuse of the switch, increasing the probability of traffic accidents, and operating in complex road environments is complicated, which can easily lead to chaos in the driver.
An automatic switching system for high and low beams of automobiles is designed, including an environmental monitor, a car distance monitor and a control core. By obtaining the ambient light intensity and opposite driving distance, it intelligently controls the switching of high and low beams of automobiles, combining the Internet of Things module and indicators. Light module realizes automatic switching and provides manual switching function.
It effectively solves the problem of underutilization or misuse of high and low beam lights caused by manual operation of drivers, reduces the probability of traffic accidents, and promotes the intelligent development of vehicles, improving driving safety and operation convenience.
Smart Images
Figure CN222202391U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of intelligent control of vehicle lights, in particular to an automatic switching system for automobile high and low beam lights. Background Art
[0002] The high and low beam lights of automobiles are very important lighting equipment on vehicles. They provide the necessary vision for drivers at night or in low-light environments, and also serve as warnings and reminders. At present, the high and low beam lights of vehicles are switched manually. According to driving habits and road conditions, drivers use low beam lights first when the light is not good when driving on the road. When there is no light around and the vision is poor, they should turn on the high beam lights in time; vehicles with high beam lights turned on should switch to low beam lights 150 meters before meeting; when driving on some roads with poor lighting conditions, if there are frequent oncoming vehicles, in order not to affect the oncoming vehicles, the high and low beam lights can be flashed alternately. This frequent operation will cause confusion or trouble for drivers, and even cause traffic accidents due to untimely switching of high and low beam lights. Therefore, there is an urgent need for an automatic switching system for high and low beam lights of automobiles to solve the problem that the high and low beam lights are not fully utilized or misused due to the manual operation of the high and low beam lights by the driver during vehicle driving, thereby reducing the probability of traffic accidents caused by untimely switching of high and low beam lights. Utility Model Content
[0003] In view of the deficiencies of the prior art and the needs of practical application, the utility model provides an automatic switching system for automobile high and low beam lights, the automatic switching system for automobile high and low beam lights comprising an environment monitor, a meeting distance monitor, a control core and a combination headlight; the environment monitor is used to obtain the ambient light intensity; the meeting distance monitor is used to monitor the distance to the oncoming vehicle; the control core comprises a power supply, a linear voltage regulator chip and a main control board, the power supply provides a power supply voltage for the linear voltage regulator chip and the combination headlight, the linear voltage regulator chip is used to use the power supply voltage to provide a regulated power supply for the environment monitor, the meeting distance monitor and the main control board, the main control board is used to send a circuit signal to the combination headlight according to the ambient light intensity and the distance to the oncoming vehicle; the combination headlight is used to switch the high and low beam lights according to the circuit signal of the control core. The utility model obtains the oncoming distance and the ambient light intensity to intelligently control the switching of the high and low beam lights, thereby solving the problem that the high and low beam lights are not fully utilized or are misused due to the driver manually operating the switching of the high and low beam lights during driving, thereby reducing the probability of traffic accidents caused by untimely switching of the high and low beam lights, further promoting the intelligent development of vehicles, and is of great significance to promoting sustainable development.
[0004] Optionally, the automatic switching system for high and low beam lights of a vehicle further comprises an indicator light module and a switch module; the indicator light module is used to display the current light status in the vehicle dashboard, and the current light status includes the state of turning on the low beam light, turning on the high beam light, and turning off the headlights; the switch module is used for the driver to manually switch the high and low beam lights. The utility model can clearly remind the driver of the current vehicle light status through the indicator light module; the high and low beam lights can be manually switched through the switch module, which can avoid the failure of automatic switching and is conducive to improving driving safety.
[0005] Optionally, the automobile high and low beam automatic switching system further comprises an Internet of Things module, and the Internet of Things module is used to transmit the control signal of the cloud or the client to the main control board. The utility model realizes human-computer interaction by using the Internet of Things module, which improves the intelligent operation space of the utility model.
[0006] Optionally, the connection between the vehicle power CAN bus and the Internet of Things module is physically shielded. The utility model utilizes physical shielding to connect the vehicle power CAN bus and the Internet of Things module, which further ensures the safety of the use of the utility model.
[0007] Optionally, the linear voltage regulator chip is electrically connected to the power supply; the linear voltage regulator chip is electrically connected to the environmental monitor; the linear voltage regulator chip is electrically connected to the oncoming distance monitor; the linear voltage regulator chip is electrically connected to the main control board. The utility model provides power to the environmental monitor, the oncoming distance monitor and the main control board after stabilizing the 12V power supply voltage to 5V, which is conducive to ensuring the stable operation of the environmental monitor, the oncoming distance monitor and the main control board.
[0008] Optionally, the main control board is electrically connected to the environment monitor; the main control board is electrically connected to the oncoming distance monitor; the main control board is electrically connected to the Internet of Things module; the main control board is electrically connected to the indicator light module; the main control board is electrically connected to the switch module. The utility model electrically connects the main control board to the environment monitor, oncoming distance monitor, Internet of Things module, indicator light module, and switch module respectively, which is conducive to directly obtaining monitoring signals and quickly switching between high and low lights.
[0009] Optionally, the combination headlight comprises a high beam control circuit, a low beam control circuit and an integrated LED lamp bead, and the integrated LED lamp bead is controlled by the high beam control circuit and the low beam control circuit.
[0010] Optionally, the main control board is electrically connected to the high beam control circuit; the main control board is electrically connected to the low beam control circuit; and the integrated LED lamp beads are electrically connected to the power supply. The combined headlight provided by the utility model separates the high and low beam circuits and electrically connects them to the main control board, which is conducive to improving the light switching efficiency, and uses a 12V power supply to directly supply power to the integrated LED lamp beads, thereby ensuring the lighting intensity of the light.
[0011] Optionally, the oncoming distance monitor includes but is not limited to a laser rangefinder, an ultrasonic rangefinder and an infrared rangefinder. The utility model provides a variety of rangefinders to obtain oncoming distances, further improving the oncoming distance monitor to obtain accurate oncoming distances, and improving the accuracy and reliability of the utility model.
[0012] Optionally, the environmental monitor includes but is not limited to a visible light sensor, a solar light sensor, a light intensity tester and an illuminance meter. The utility model provides a variety of light sensors to obtain ambient light intensity information, which improves the accuracy of the environmental monitor in obtaining ambient light intensity information and further improves the accuracy and reliability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the framework of an automatic switching system for high and low beam lights of a vehicle according to the utility model;
[0014] Figure 2 This is the control core circuit diagram of the utility model;
[0015] Figure 3 The sensor circuit and lighting control circuit diagram of the utility model;
[0016] Figure 4 A flow chart of automatic light switching control provided by an embodiment of the utility model.
[0017] Among them: 001-power supply, 002-linear voltage regulator chip, 003-main control board. DETAILED DESCRIPTION
[0018] The specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are only for illustration and are not intended to limit the present invention. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is obvious to those of ordinary skill in the art that these specific details do not have to be adopted to implement the present invention. In other examples, in order to avoid confusing the present invention, known circuits, software or methods are not specifically described.
[0019] Throughout the specification, references to "one embodiment", "an embodiment", "an example" or "an example" mean that a particular feature, structure or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "in one embodiment", "in an embodiment", "an example" or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example.
[0020] Furthermore, the particular features, structures or characteristics may be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. In addition, it should be understood by those skilled in the art that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale.
[0021] See also Figure 1 In an embodiment, a system for automatically switching high and low beam lights of a vehicle includes a control core, an environment monitor, a meeting distance monitor and a combination headlight; the control core includes a power supply, a linear voltage regulator chip and a main control board; the environment monitor is used to obtain the ambient light intensity; the meeting distance monitor is used to monitor the distance to the oncoming vehicle; the combination headlight is used to switch the high and low beam lights according to the circuit signal of the control core; and also includes an Internet of Things module, which is used to transmit the control signal of the cloud or the client to the main control board.
[0022] Specifically, the oncoming distance monitor and the environmental monitor are installed in the middle of the front bumper of the car, and the control core is integrated with the car central control. The oncoming distance monitor and the environmental monitor are installed in the middle of the front bumper of the car, which is conducive to accurately obtaining relevant monitoring data. The combination headlight includes a high-beam control circuit, a low-beam control circuit and an integrated LED lamp bead, and the integrated LED lamp bead is driven by a high-power triode; the main control board is electrically connected to the high-beam control circuit; the main control board is electrically connected to the low-beam control circuit; the integrated LED lamp bead is electrically connected to the power supply.
[0023] Furthermore, the main control board is electrically connected to the environmental monitor; the main control board is electrically connected to the meeting distance monitor; the main control board is electrically connected to the Internet of Things module; the main control board is electrically connected to the indicator light module; and the main control board is electrically connected to the switch module.
[0024] In the embodiment, the IoT module is an external T-BOX, and the function of T-BOX is realized based on the ShineBlink IoT development board and the ML302-GC211 Cat.1 submodule. T-BOX uses the communication operator as the pipeline end for communication, and uses the 3 / 4 / 5G network to realize information interaction with the public cloud Jizhiyun platform through the ShineBlink IoT development board and the ML302-GC211 Cat.1 module. Specifically, the Jizhiyun firmware IoT platform in the ML302-GC211 Cat.1 module receives the cloud or user-end control signal, and obtains the Boolean type variable for the high and low beam switching control through the ShineBlink IoT development board, and then assigns the IO port of the main control board 003 in parallel according to the Boolean type variable, and the main control board 003 realizes the high and low beam switching according to the control rule. Using T-BOX to transmit the control signal of the cloud or client to the high beam and low beam, and then input the control signal to the main control board, the IoT information interaction can be realized, which can solve the problem that some car models are old and do not have built-in car networking functions.
[0025] Furthermore, in the T-BOX, the TX0 interface of the ShineBlink Internet of Things development board is connected to the RXD interface of the ML302-GC211 Cat.1 submodule, the RX0 interface of the ShineBlink Internet of Things development board is connected to the TXD interface of the ML302-GC211 Cat.1 submodule, the D6 interface of the ShineBlink Internet of Things development board is connected to the PWR interface of the ML302-GC211 Cat.1 submodule, the D5 interface of the ShineBlink Internet of Things development board is connected to the RST interface of the ML302-GC211 Cat.1 submodule, the 5V interface of the ShineBlink Internet of Things development board is connected to the VIN interface of the ML302-GC211 Cat.1 submodule, and the GND interface of the ShineBlink Internet of Things development board is connected to the GND interface of the ML302-GC211 Cat.1 submodule.
[0026] Furthermore, the connection between the vehicle power CAN bus and the IoT module is physically shielded to effectively ensure the security of the Internet of Vehicles.
[0027] See also Figure 2In one embodiment, the linear voltage regulator chip 002 is used to stabilize the 12V power supply voltage to 5V voltage, and provide 5V power supply for the environment monitor, the oncoming distance monitor and the main control board 003; the power supply 001 is electrically connected to the linear voltage regulator chip 002 and the combination headlight respectively, and the power supply 001 provides 12V power supply for the linear voltage regulator chip 002 and the combination headlight. In the embodiment, the linear voltage regulator chip 002 is a LM7805 chip, the power supply 001 is a HB-9500 power supply, and the main control board 003 is an Arduino UNO motherboard.
[0028] In the embodiment, the meeting distance monitor includes but is not limited to a laser rangefinder, an ultrasonic rangefinder and an infrared rangefinder. The laser rangefinder is a DPE-10-500 laser rangefinder sensor, the ultrasonic rangefinder is an HC-SR04 ultrasonic rangefinder sensor, and the infrared rangefinder is a VC851G infrared rangefinder. They all have the following characteristics: a measuring range of 0 to 500 m, a maximum measuring frequency of 250 Hz, a measuring accuracy of 1 mm, a serial interface output, an analog output accuracy (0.1%), a protection grade of IP65, and an operating temperature of -40 to 60°C. Selecting any one of the meeting distance monitors can accurately and effectively obtain real-time meeting distance information.
[0029] Furthermore, the environmental monitor includes but is not limited to a visible light sensor, a solar light sensor, a light intensity tester and a lux meter. The visible light sensor is a LXD / GB5-A1DPZ patch visible light sensor, the solar light sensor is a SIEMENS QLS60 solar light sensor, the light intensity tester is a BH1750 light intensity sensor, and the lux meter is a sima AR813A lux meter. The environmental monitor can efficiently and accurately obtain ambient light intensity information by selecting any one of them.
[0030] See also Figure 3 , the upper left is the oncoming distance sensor circuit, the lower left is the ambient light intensity sensor circuit, the right picture is the high beam control circuit and the low beam control circuit, IO2 represents the oncoming distance sensor output signal, IO3 represents the oncoming distance sensor feedback signal, for example, when there is a pulse voltage trigger, a high frequency signal is sent to the Trig pin, that is, the output signal, the chip in the probe will vibrate, and then generate ultrasonic waves, which propagate in the air. When the ultrasonic wave encounters an object, it will return and be received by the receiving probe of the ultrasonic sensor. The reflected ultrasonic wave makes the piezoelectric chip vibrate, and then a voltage is generated at both ends of the piezoelectric chip. Then this voltage passes through the signal amplification circuit inside the ultrasonic wave to amplify the voltage signal. At this time, the Echo pin sends a high frequency signal to the control board, that is, the feedback signal; IO4 represents the output signal of the ambient light intensity sensor, and IO5 represents the feedback signal of the ambient light intensity sensor.
[0031] In the embodiment, when the Arduino UNO mainboard chooses to turn on the low beam, IO12 and NPN transistor Q1 are connected, and IO13 and NPN transistor Q2 are disconnected; when the Arduino UNO mainboard chooses to turn on the high beam, IO12 and NPN transistor Q1 are disconnected, and IO13 and NPN transistor Q2 are connected; when the Arduino UNO mainboard chooses to turn on the headlight, IO12 and NPN transistor Q1 are disconnected, and IO13 and NPN transistor Q2 are disconnected.
[0032] In another embodiment, the meeting distance monitor obtains the distance to the oncoming vehicle in real time and transmits the obtained information to the Arduino UNO mainboard. The environmental monitor obtains the light intensity of the vehicle's surrounding environment in real time and transmits the obtained information to the Arduino UNO mainboard. The Arduino UNO mainboard compares the received light intensity information of the vehicle's surrounding environment and the distance information to the oncoming vehicle with the set control parameters, and intelligently switches the high and low beam headlights according to the comparison results.
[0033] Furthermore, the automatic switching system for high and low beam lights of a vehicle also includes an indicator light module and a switch module; the indicator light module is used to display the current light status in the vehicle dashboard, and the current light status includes turning on the low beam light or turning on the high beam light or turning off the headlights; the Arduino UNO mainboard compares the received light intensity information of the vehicle's surrounding environment and the distance information to the oncoming vehicle with the set control parameters, and displays the corresponding current light status in the indicator light module according to the comparison result. In another embodiment, when the driver manually switches the high and low beam lights through the switch module, the Arduino UNO mainboard obtains negative feedback of the light status and stops automatically switching the high and low beam lights.
[0034] Specifically, the control parameters of the Arduino UNO mainboard include a first threshold value of ambient light intensity, a second threshold value of ambient light intensity, and a threshold value of the oncoming vehicle distance. Further, the first threshold value of ambient light intensity is 2 lux, the second threshold value of ambient light intensity is 30 lux, and the threshold value of the oncoming vehicle distance is 150 meters.
[0035] See also Figure 4Furthermore, when the ambient light intensity of the vehicle surrounding environment obtained by the environmental monitor in real time is greater than the second threshold of ambient light intensity, turn off the vehicle lights; when the ambient light intensity of the vehicle surrounding environment obtained by the environmental monitor in real time is less than the second threshold of ambient light intensity, but greater than the first threshold of ambient light intensity, or when the ambient light intensity of the vehicle surrounding environment obtained by the environmental monitor in real time is less than the first threshold of ambient light intensity, and the distance to the oncoming vehicle obtained by the meeting distance monitor in real time is less than the meeting distance threshold, switch to low beam lights; when the ambient light intensity of the vehicle surrounding environment obtained by the environmental monitor in real time is less than the first threshold of ambient light intensity, and the distance to the oncoming vehicle obtained by the meeting distance monitor in real time is greater than the meeting distance threshold, switch to high beam lights.
[0036] In summary, the utility model obtains the oncoming distance and the ambient light intensity, and intelligently controls the switching of high and low beam lights, thereby solving the problem that the high and low beam lights are not fully utilized or misused due to the driver manually operating the high and low beam lights switching during driving, thereby reducing the probability of traffic accidents caused by untimely high and low beam lights switching, further promoting the intelligent development of vehicles, and having important significance for promoting sustainable development. Therefore, the utility model effectively overcomes various shortcomings in the existing technology and has a high industrial utilization value.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. An automatic switching system for high and low beam lights of a car, characterized in that: The automobile high and low beam automatic switching system comprises an environment monitor, a vehicle-oncoming distance monitor, a control core and a combination headlight; The environmental monitor is used to obtain the ambient light intensity; The oncoming vehicle distance monitor is used to monitor the distance to the oncoming vehicle; The control core includes a power supply, a linear voltage regulator chip and a main control board. The power supply provides a power supply voltage for the linear voltage regulator chip and the combination headlight. The linear voltage regulator chip is used to use the power supply voltage to provide a regulated power supply for the environment monitor, the oncoming vehicle distance monitor and the main control board. The main control board is used to send a circuit signal to the combination headlight according to the ambient light intensity and the distance of the oncoming vehicle. Also includes an indicator light module and a switch module; The indicator light module is used to display the current light status in the vehicle dashboard, and the current light status includes the state of turning on the low beam, turning on the high beam and turning off the headlight; The switch module is used for the driver to manually switch between high and low beam lights; It also includes an Internet of Things module, which is used to transmit control signals from the cloud or the client to the main control board; The combination headlight is used to switch between high and low beam lights according to the circuit signal of the control core; The main control board is electrically connected to the environmental monitor; The main control board is electrically connected to the oncoming vehicle distance monitor; The main control board is electrically connected to the Internet of Things module; The main control board is electrically connected to the indicator light module; The main control board is electrically connected to the switch module; The combination headlight comprises a high beam control circuit, a low beam control circuit and an integrated LED lamp bead, wherein the integrated LED lamp bead is controlled by the high beam control circuit and the low beam control circuit; The main control board is electrically connected to the high beam control circuit; The main control board is electrically connected to the low beam control circuit; The integrated LED lamp bead is electrically connected to the power supply.
2. The automatic switching system for high and low beam lights of a vehicle according to claim 1, characterized in that: Physically shield the connection between the vehicle power CAN bus and the Internet of Things module.
3. The automatic switching system for high and low beam lights of a vehicle according to claim 1, characterized in that: The linear voltage stabilizing chip is electrically connected to the power supply; The linear voltage regulator chip is electrically connected to the environmental monitor; The linear voltage stabilizing chip is electrically connected to the oncoming vehicle distance monitor; The linear voltage stabilizing chip is electrically connected to the main control board.
4. The automatic switching system for high and low beam lights of a vehicle according to claim 1, characterized in that: The oncoming vehicle distance monitor includes but is not limited to a laser rangefinder, an ultrasonic rangefinder and an infrared rangefinder.
5. The automatic switching system for high and low beam lights of a vehicle according to claim 1, characterized in that: The environmental monitors include, but are not limited to, visible light sensors, solar energy environmental monitors, light intensity testers, and illuminance meters.