Night vehicle side lighting system based on camera and sensor

Abstract

The utility model relates to the technical field of automobile lighting, and discloses a night automobile side lighting system based on a camera and a sensor, the night automobile side lighting system comprises a control unit, a camera assembly and a sensor assembly, the control unit comprises an MCU chip, a BOOST circuit, a BUCK circuit and a matrix LED control circuit, the BOOST circuit, the BUCK circuit and the matrix LED control circuit are all connected with the MCU chip, and the camera assembly is connected with the sensor assembly. The matrix LED control circuit comprises a U1 chip, at least one matrix LED lamp and a matrix capacitor, the matrix LED lamps are installed above B columns on the two sides of a vehicle, a communication circuit is arranged between the MCU chip and the U1 chip, and the communication circuit comprises a CAN transceiver U3 and a CAN transceiver U4. The sensor assembly and the camera assembly are used for detecting the condition around the automobile, the control unit drives the matrix LED lamps to conduct intelligent illumination according to the detected condition, scratching of short and small obstacles in a side face blind area when the automobile turns in the dark environment is avoided, and the observation capacity of a driver for the environment on the side of the automobile is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lighting, in particular to a nighttime vehicle side lighting system based on a camera and a sensor. Background Art

[0002] With the rapid development of the automobile industry, people are paying more and more attention to automobile safety. There are more and more accidents when driving at night. In order to ensure night driving safety, regulations require the installation of lighting fixtures on the front and rear of the car to improve driving safety. However, in a dark environment, the front and rear lights cannot provide effective lighting for both sides of the vehicle. In a completely dark basement or an environment without street lights, it is difficult for the driver to effectively observe the side environment of the vehicle through the reflectors on both sides and the front and rear lights. For example, there are obstacles around the vehicle in a dark environment, and the rear vehicle does not turn on the lights when changing lanes. There are driving risks. Utility Model Content

[0003] The purpose of the utility model is to provide a nighttime vehicle side lighting system based on a camera and a sensor to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nighttime vehicle side lighting system based on a camera and a sensor, comprising a control unit, a camera assembly and a sensor assembly, wherein the camera assembly and the sensor assembly are respectively connected to the control unit via a CAN bus, the control unit comprises an MCU chip, a BOOST circuit, a BUCK circuit and a matrix LED control circuit, wherein the BOOST circuit, the BUCK circuit and the matrix LED control circuit are all connected to the MCU chip, the matrix LED control circuit comprises a U1 chip and at least one matrix LED lamp and a matrix capacitor, the matrix LED lamp is installed above the B-pillar on both sides of the vehicle, the pin 2 of the U1 chip is connected to the pin 52 of the MCU chip, the pin 3 of the U1 chip is connected to the pin 51 of the MCU chip, the pin 4 of the U1 chip is connected in parallel with capacitors C10, C22 and C13, the pin 8 of the U1 chip is connected in series with capacitors C7 and C16, the other end of capacitor C7 is connected to pin 9 of the U1 chip, a communication circuit is provided between the MCU chip and the U1 chip, and the communication circuit comprises a CAN transceiver U3 and a CAN transceiver U4.

[0005] The following improvements are made in the present application: the U1 chip model is NXP ASL5115, the number of the matrix LED lamps and the matrix capacitors are the same, and the matrix capacitors and the matrix LED lamps are arranged in parallel to control the current balance of the matrix LED lamps by adjusting the voltage drop difference of the LED lamps.

[0006] The following improvements are made in the present application: the control unit is installed under the dashboard inside the vehicle, the MCU chip model is S32K144-64, the BOOST circuit uses the LM5122 boost voltage regulator chip, and one output of the BOOST circuit is connected to the input of the BUCK circuit, and the output of the BUCK circuit is connected to the positive pole of the matrix LED control circuit.

[0007] The following improvements are made in the present application: the camera assembly includes a front camera, a first camera, a second camera, a third camera and a rear camera, the front camera is installed on the windshield of the vehicle, the first camera is installed on the shark fin on the top of the vehicle, the second camera and the third camera are installed in the middle of the B-pillars on both sides of the vehicle, and the rear camera is installed at the rear of the vehicle. The front camera is used in conjunction with the sensor assembly to identify the movement trajectory of pedestrians and vehicles far in front of the car through images and ultrasonic responses, and to determine whether they will enter the front and side blind spots.

[0008] The following improvements are made in the present application: the sensor assembly includes an ultrasonic sensor, which is installed on the four doors and has a model of TC0062-005. In conjunction with the second camera and the third camera, the vehicle side environment and the position of obstacles relative to the vehicle can be determined through image recognition and ultrasonic response.

[0009] The following improvements are made in the present application: the sensor assembly further includes a radar sensor, the model of which is ARS408-21, and the radar sensor is installed at the front and rear of the vehicle. In conjunction with the first camera and the rear camera, the movement trajectory of pedestrians and vehicles far behind the car is identified through images, and it is determined whether they are within the rear and side blind spots.

[0010] The following improvements are made in the present application solution, which also includes a warning atmosphere light strip, wherein the warning atmosphere light strip is installed on the vehicle door, and the warning atmosphere light strip is connected to the control unit via a CAN bus.

[0011] Compared with the prior art, the utility model provides a nighttime vehicle side lighting system based on a camera and a sensor, which has the following beneficial effects:

[0012] The utility model coordinates the control unit, camera assembly, sensor assembly and warning atmosphere light strip, utilizes the sensor assembly and camera assembly to detect the situation around the car, and drives the matrix LED light for intelligent lighting based on the detected situation, so as to avoid the scratches of small obstacles in the side blind spot when the vehicle turns in a dark environment, effectively improve the driver's observation ability of the side environment of the vehicle, and at the same time utilizes the atmosphere light strip for warning, so as to realize intelligent lighting reminder for overtaking / being overtaken on a completely dark road section, thereby improving the driving safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural block diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the assembly of the utility model;

[0015] Figure 3 This is the circuit diagram of the MCU chip;

[0016] Figure 4 This is a schematic diagram of the BOOST circuit;

[0017] Figure 5 This is a schematic diagram of the BUCK circuit;

[0018] Figure 6 It is a schematic diagram of the matrix LED control circuit;

[0019] Figure 7 A schematic diagram of a communication circuit.

[0020] In the figure: 1. Control unit; 2. Camera assembly; 3. Sensor assembly; 4. Matrix LED light; 5. Warning atmosphere light strip. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiment of the present invention will be described below in conjunction with the accompanying drawings in the embodiment of the present invention:

[0022] like Figure 1-2As shown, a nighttime vehicle side lighting system based on cameras and sensors includes a control unit 1, a camera assembly 2, a sensor assembly 3 and a warning atmosphere light strip 5, wherein the camera assembly 2, the sensor assembly 3 and the warning atmosphere light strip 5 are respectively connected to the control unit 1 through a CAN bus; the control unit 1 is installed below the dashboard inside the vehicle, the camera assembly 2 includes a front camera, a first camera, a second camera, a third camera and a rear camera, the front camera is installed on the vehicle windshield, the first camera is installed on the shark fin on the top of the vehicle, the second camera and the third camera are installed between the B-pillars on both sides of the vehicle, and the rear camera is installed at the rear of the vehicle; the system can take pictures and identify pedestrians and vehicles within 20 meters in front and behind the car, so that the surrounding traffic conditions can be monitored in real time, providing the driver with more comprehensive information, and the system can determine whether there is a risk of collision by analyzing the movement trajectory of pedestrians and vehicles through the Kalman filter algorithm. This analysis capability can warn the driver in advance and take corresponding measures to avoid potential accidents. When an obstacle enters the camera detection range but does not enter the red alert range, the control unit 1 performs early warning processing to alert the driver; when the obstacle enters the red alert range, the control unit 1 will perform emergency processing; which may include directional flashing reminders of the matrix LED light 4, red flashing reminders of the warning atmosphere light strip 5, sound alarms, etc., to ensure the safety of the driver and passengers.

[0023] The sensor assembly 3 includes an ultrasonic sensor and a radar sensor, wherein the ultrasonic sensor model is TC0062-005, and the radar sensor model is ARS408-21, and the ultrasonic sensor is installed on the four vehicle doors. The distance of the obstacle from the vehicle door can be determined by the sensor sound wave response. When the obstacle does not enter the detection range of the ultrasonic sensor, the controller does not process it. When the obstacle enters the detection range of the ultrasonic sensor but does not enter the red alert range, the controller performs early warning processing. When the obstacle enters the red alert range, the control unit 1 performs emergency processing; the radar sensor is installed at the front and rear of the vehicle. In conjunction with the ultrasonic sensor, it can detect a wider range of obstacles around the vehicle, thereby expanding the protection range of the door anti-collision system and making it more comprehensive. Through the joint detection of the ultrasonic sensor and the radar sensor, more accurate information on the obstacle position and distance can be obtained, avoiding misjudgment and missed judgment, and improving the detection accuracy of the system. Under normal circumstances, the human eye's recognition ability for the night environment is relatively poor, but through the use of radar sensors, objects in the front and rear directions of the vehicle can still be accurately detected, thereby improving the recognition ability at night.

[0024] like Figure 3-7As shown, the control unit 1 includes an MCU chip, a BOOST circuit, a BUCK circuit and a matrix LED control circuit, and the BOOST circuit, the BUCK circuit and the matrix LED control circuit are all connected to the MCU chip; wherein the MCU chip model is S32K144-64, the BOOST circuit is a boost circuit, which uses the LM5122 boost voltage regulator chip to boost 13.5V to 48V, the BUCK circuit is a step-down constant current circuit, which is stable at 1A, one output of the BOOST circuit is connected to the input of the BUCK circuit, and the output of the BUCK circuit is connected to the positive electrode of the matrix LED control circuit; the matrix LED control circuit includes a U1 chip and at least one matrix LED lamp 4 and a matrix capacitor, and the U1 chip model is NXP ASL5115, capacitors C10, C22 and C13 are connected in parallel on pin 4 of U1 chip, capacitors C7 and C16 are connected in series on pin 8 of U1 chip, and the other end of capacitor C7 is connected to pin 9 of U1 chip; matrix LED lamps 4 are installed above the B-pillars on both sides of the vehicle, and the number is preferably 12. The number of matrix LED lamps 4 and matrix capacitors is the same. The matrix capacitors and matrix LED lamps 4 are connected in parallel to control the current balance of the matrix LED lamps 4 by adjusting the voltage drop difference of the LED lamps 4; pin 2 of U1 chip is connected to pin 52 of MCU chip, and pin 3 of U1 chip is connected to pin 10 of MCU chip. 51 connection, a communication circuit is provided between the MCU chip and the U1 chip, and the communication circuit includes a CAN transceiver U3 and a CAN transceiver U4. Through the CAN transceiver U3, TX and RX communications are first converted into CAN communications to prevent signal transmission interference, and then pass through a CAN transceiver U4 to decode into TX and RX communications to control the U1 chip; the MCU chip controls the matrix chips SW14 and SW15 to short-circuit, thereby short-circuiting LED32 to turn off the light. Similarly, by controlling SW0~SW15, 12 LED switch control can be achieved, and by placing multiple matrix chips, multiple LED matrix switch control can be achieved.

[0025] When the vehicle turns the steering wheel or turns on the turn signal, the control unit 1 identifies the real-time situation of the area on the side where the vehicle is about to turn through the camera component 2 and the sensor component 3; when pedestrians or vehicles in the distance are about to enter the side blind spot of the vehicle, the control unit 1 will predict the positions of the pedestrians and vehicles in advance, and control the matrix LED lights 4 to flash in the area where the pedestrians and vehicles are about to enter as a prompt; when pedestrians and vehicles enter the side blind spot of the vehicle, the control unit 1 will monitor the positions of pedestrians and vehicles in real time, and control the matrix LED lights 4 to turn off the lights at the positions of pedestrians and vehicles, thereby preventing pedestrians and vehicles on the side of the vehicle from being dazzled by the strong light of the matrix LED lights 4; when pedestrians and vehicles are away from the side blind spot of the vehicle, the control unit 1 controls the matrix LED lights 4 to breathe and turn off the lights, thereby reducing the energy consumption of the entire vehicle. It realizes intelligent lighting reminders for overtaking / being overtaken on a completely dark road, thereby improving vehicle driving safety; the warning atmosphere light strip 5 is installed on the vehicle door. When pedestrians or vehicles enter the vehicle's blind spot nearby and there is a risk of collision, the control unit 1 controls the atmosphere light strip to flash red light for reminder; when vehicles or pedestrians are in the vehicle's blind spot, but the relative position is relatively safe or far away from the vehicle and the risk of collision is not great, the atmosphere light strip lights up with flowing yellow light for reminder; when there are no pedestrians or vehicles nearby, the atmosphere light strip stays on with light blue light for reminder, thereby realizing the pedestrian and vehicle reminder function in the vehicle's side blind spot on a completely dark road, thereby improving driving safety; when the vehicle has a collision accident or emergency situation, the matrix LED light 4 and the warning atmosphere light strip 5 flash red light "three short, three long, and three short" to facilitate the escape of the driver and passengers.

[0026] In addition, the matrix LED lights 4 and the warning atmosphere light strip 5 also have a dynamic light carpet welcoming function on the vehicle side. When the driver approaches the vehicle holding a key or a mobile phone Bluetooth key, the control unit 1 identifies the real-time position of the owner through the camera component 2 and the sensor component 3, and controls the matrix LED lights 4 to illuminate the road in front of the owner and the warning atmosphere light strip 5 to light up in colorful flowing water. When approaching the vehicle, the owner can improve his observation of the road surface and improve walking safety.

[0027] The above embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A nighttime vehicle side lighting system based on a camera and a sensor, characterized in that: The invention comprises a control unit (1), a camera assembly (2) and a sensor assembly (3), wherein the camera assembly (2) and the sensor assembly (3) are respectively connected to the control unit (1) via a CAN bus, wherein the control unit (1) comprises an MCU chip, a BOOST circuit, a BUCK circuit and a matrix LED control circuit, wherein the BOOST circuit, the BUCK circuit and the matrix LED control circuit are all connected to the MCU chip, wherein the matrix LED control circuit comprises a U1 chip and at least one matrix LED lamp (4) and a matrix capacitor, wherein the matrix LED lamp (4) is installed above the B-pillars on both sides of the vehicle, wherein the pin 2 of the U1 chip is connected to the pin 52 of the MCU chip, the pin 3 of the U1 chip is connected to the pin 51 of the MCU chip, the pin 4 of the U1 chip is connected in parallel with a capacitor C10, a capacitor C22 and a capacitor C13, the pin 8 of the U1 chip is connected in series with a capacitor C7 and a capacitor C16, the other end of the capacitor C7 is connected to the pin 9 of the U1 chip, and a communication circuit is arranged between the MCU chip and the U1 chip, wherein the communication circuit comprises a CAN transceiver U3 and a CAN transceiver U4.

2. A nighttime vehicle side lighting system based on a camera and a sensor according to claim 1, characterized in that: The U1 chip model is NXP ASL5115, the number of the matrix LED lamps (4) and the matrix capacitors is the same, and the matrix capacitors and the matrix LED lamps (4) are arranged in parallel to control the current balance of the matrix LED lamps (4) by adjusting the voltage drop difference of the LED lamps (4).

3. The nighttime vehicle side lighting system based on a camera and a sensor according to claim 1, characterized in that: The control unit (1) is installed below the dashboard inside the vehicle, the MCU chip model is S32K144-64, the BOOST circuit uses an LM5122 boost voltage regulator chip, and one output of the BOOST circuit is connected to the input of the BUCK circuit, and the output of the BUCK circuit is connected to the positive electrode of the matrix LED control circuit.

4. The nighttime vehicle side lighting system based on a camera and a sensor according to claim 1, characterized in that: The camera assembly (2) comprises a front camera, a first camera, a second camera, a third camera and a rear camera, wherein the front camera is mounted on a windshield of a vehicle, the first camera is mounted on a shark fin on the top of the vehicle, the second camera and the third camera are mounted between the B-pillars on both sides of the vehicle, and the rear camera is mounted at the rear of the vehicle.

5. The nighttime vehicle side lighting system based on camera and sensor according to claim 1, characterized in that: The sensor assembly (3) comprises an ultrasonic sensor, which is installed on four vehicle doors and has a model of TC0062-005.

6. The nighttime vehicle side lighting system based on camera and sensor according to claim 5, characterized in that: The sensor assembly (3) also includes a radar sensor, the model of which is ARS408-21, and the radar sensor is installed at the front end and the rear end of the vehicle.

7. The nighttime vehicle side lighting system based on camera and sensor according to claim 1, characterized in that: It also comprises a warning atmosphere light strip (5), wherein the warning atmosphere light strip (5) is installed on the vehicle door, and the warning atmosphere light strip (5) is connected to the control unit (1) via a CAN bus.

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