CN116198409B - Anti-collision system for vehicle and control method - Google Patents
Anti-collision system for vehicle and control method Download PDFInfo
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- CN116198409B CN116198409B CN202310495424.9A CN202310495424A CN116198409B CN 116198409 B CN116198409 B CN 116198409B CN 202310495424 A CN202310495424 A CN 202310495424A CN 116198409 B CN116198409 B CN 116198409B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0017—Devices integrating an element dedicated to another function
- B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
Abstract
The invention discloses a vehicle anti-collision system and a control method, wherein the vehicle anti-collision system comprises a vehicle body domain controller, and a millimeter wave front radar, a millimeter wave front angle radar, a brake lamp fusion radar, a safety belt control system, a brake system, a display system and an alarm system which are connected with the vehicle body domain controller; the stop lamp fusion radar comprises a high-frequency substrate, wherein the high-frequency substrate is provided with a stop lamp LED lamp bead, a radar control area and a car lamp control area; the radar control area is internally provided with a millimeter wave radar radio frequency module and a radar baseband module, and the millimeter wave radar radio frequency module is connected with the radar baseband module. The invention provides a vehicle anti-collision system and a control method, which are used for fusing a high-order brake lamp with a millimeter wave radar, fusing and judging the collision risk of a vehicle and warning the vehicle behind.
Description
Technical Field
The invention relates to a vehicle anti-collision system and a control method.
Background
Currently, in order to improve the integration level of a sensor inside a vehicle, a millimeter wave radar and a vehicle lamp are fused in the prior art, for example, a front lamp of the vehicle and a millimeter wave front angle radar are fused, and when illumination in a driving direction is realized, the detection function of the front angle radar is utilized to detect the road condition ahead. In the prior art, a rear combination lamp of a vehicle is fused with a millimeter wave rear angle radar, and the rear and side rear environments are detected by utilizing the detection function of the rear angle radar while warning the rear vehicle by using a tail lamp.
However, in the prior art, the conventional scheme basically simply combines the radar module and the lamp module into an integrated module, and does not perform deeper function fusion and development. Meanwhile, the current integrated module has no function of warning the driver of the rear vehicle in the case of rapid approaching at the rear of the vehicle, so that the problem of single function of the integrated module exists.
When a rear vehicle approaches the vehicle rapidly and the driver of the rear vehicle is distracted in the driving process, rear-end collision accidents of the rear vehicle are easy to occur, and the situations of vehicle damage, driver injury, passenger injury and the like are caused. When a vehicle comes from the rear quickly, and the front vehicle does not have the rear obstacle detection and warning function, the front vehicle driver cannot perceive rear-end collision risk at the rear, so that emergency measures and collision risk preparation cannot be made. For traditional car light and radar integrated scheme, radar and car light only share a casing, and the control circuit module of both is the complete separation, can not only cause the waste in space like this, compares simultaneously and uses the module of same control circuit, can appear hysteresis in the in-process that gives prompt message.
Disclosure of Invention
The invention aims to solve the technical problems and overcome the defects of the prior art, and provides a vehicle anti-collision system and a control method, which are used for fusing a high-order brake lamp with a millimeter wave radar, fusing and judging the collision risk of a vehicle and warning a vehicle behind.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention provides a vehicle anti-collision system, which comprises a vehicle body domain controller, a millimeter wave front radar, a millimeter wave front angle radar, a brake light fusion radar, a safety belt control system, a brake system, a display system and an alarm system, wherein the millimeter wave front radar, the millimeter wave front angle radar, the brake light fusion radar, the safety belt control system, the brake system, the display system and the alarm system are connected with the vehicle body domain controller;
the stop lamp fusion radar comprises a high-frequency substrate, wherein the high-frequency substrate is provided with a stop lamp LED lamp bead, a radar control area and a car lamp control area;
the radar control area is internally provided with a millimeter wave radar radio frequency module and a radar baseband module, and the millimeter wave radar radio frequency module is connected with the radar baseband module;
the automobile lamp control area is internally provided with an automobile lamp power supply module, an integrated module MCU control module and a brake lamp driving module connected with the integrated module MCU control module, the automobile lamp power supply module is used for supplying power to the integrated module MCU control module, the brake lamp driving module and the brake lamp LED lamp bead, the radar baseband module is connected with the integrated module MCU control module, the radar baseband module transmits acquired distance information D of a rear automobile to the integrated module MCU control module, and the integrated module MCU control module is connected with the automobile body area controller through a CAN bus.
Further, the brake lamp fusion radar further comprises a car lamp mask and a car lamp bottom shell, the car lamp bottom shell is fixedly connected with the car body, the high-frequency substrate is arranged on the car lamp bottom shell, the car lamp mask is connected with the car lamp bottom shell and covers the high-frequency substrate, a car body communication interface is arranged on the car lamp bottom shell, and the high-frequency substrate is communicated with the car body domain controller through the car body communication interface.
Further, the safety belt control system comprises a safety belt MCU control module, a falling lock sensor, a locking sensor, a motor driver and a safety belt retractor, wherein the safety belt MCU control module is connected with the vehicle body domain controller, the falling lock sensor, the locking sensor and the motor driver are connected with the safety belt MCU control module, and the safety belt retractor is connected with the motor driver.
Further, the braking system comprises a braking driving module and a braking module, wherein the braking driving module is connected with the vehicle body domain controller, and the braking module is connected with the braking driving module.
Further, the display system comprises a display MCU module and a display screen, wherein the display MCU module is connected with the vehicle body domain controller, and the display screen is connected with the display MCU module;
further, the alarm system comprises an alarm driving module and a buzzer module, wherein the alarm driving module is connected with the vehicle body domain controller, and the buzzer module is connected with the alarm driving module.
Further, the millimeter wave front angle radars are provided in 4, and 4 of the millimeter wave front angle radars are provided in the side front and the side rear of the vehicle, respectively.
Another aspect of the present invention provides a control method of a vehicle collision avoidance system, including:
s1, detecting road conditions right in front of a vehicle by a millimeter wave front radar, and outputting a forward radar target signal; the millimeter wave front angle radar detects road conditions at the front side and the rear side of the vehicle and outputs a front angle radar target signal and a side collision early warning signal; the brake lamp fusion radar detects the road condition right behind the vehicle and outputs a brake lamp fusion radar target signal and a right rear collision early warning signal;
s2, the vehicle body domain controller performs fusion calculation on a forward radar target signal, a front angle radar target signal, a side collision early warning signal, a brake lamp fusion radar target signal and a front rear collision early warning signal, and judges whether a collision risk exists in the vehicle;
and step S3, if the vehicle body domain controller judges that the collision risk exists in the vehicle, starting a safety belt control system, a display system, an alarm system and a brake lamp driving module, carrying out safety early warning protection on drivers and passengers in the vehicle, and carrying out emergency risk avoidance prompt on a rear vehicle driver.
Further, in step S1, the brake light fusion radar detects the road condition right behind the vehicle, and outputs a brake light fusion radar target signal and a right behind collision early warning signal, which specifically includes the following steps:
detecting a vehicle behind the vehicle by using a brake lamp fusion radar, acquiring distance information D of the vehicle behind the vehicle, and judging the distance information D;
if the distance information D is more than or equal to 15 meters, no operation is triggered, and the brake lamp fusion radar continuously detects the distance information D of the vehicle behind the vehicle;
if the distance information D is less than or equal to 15 meters and is 0.5 meter, judging the speed V of the rear vehicle detected by the brake light fusion radar:
when the speed V is less than 40KM/H, no operation is triggered, and the brake lamp fusion radar continuously detects the distance information D of the vehicle behind the vehicle;
if the speed V is more than or equal to 40KM/H, judging whether the vehicle is in a reverse gear, if so, triggering a brake instruction by a vehicle body domain controller, automatically stopping the vehicle, and then sending a brake lamp fusion radar target signal and a right-rear collision early warning signal to the vehicle body domain controller; if the vehicle is not in the reverse gear, a brake lamp fusion radar target signal and a right rear collision early warning signal are sent at the moment;
if the distance information D is less than or equal to 0.5 meter, judging whether the vehicle is in a reverse gear, if so, triggering a braking instruction by a vehicle body domain controller, automatically braking the vehicle, and then sending a brake lamp fusion radar target signal and a collision early warning signal right behind to the vehicle body domain controller; and if the vehicle is not in the reverse gear, sending a brake lamp fusion radar target signal and a right-rear collision early warning signal to the vehicle body domain controller.
Further, in the step S3, safety precaution protection is performed on drivers and passengers in the vehicle, and emergency risk avoidance prompt is performed on the drivers of the rear vehicle, and the method specifically includes the following steps:
the vehicle body domain controller sends a braking signal to a braking system, and the braking system performs parking operation on the vehicle;
an integrated module MCU control module in the brake lamp fusion radar lights up brake lamp LED lamp beads through a brake lamp driving module, and after the brake lamp LED lamp beads flash, drivers take emergency braking measures;
the vehicle body domain controller sends a locking signal to the safety belt control system, and the safety belt control system actively tightens the safety belt for the driving position of the safety belt which is locked;
the vehicle body domain controller sends a safety early warning signal to the display system and the alarm system, an anti-collision safety early warning mark is displayed in the display system, and the alarm system sends out alarm ringing.
By adopting the technical scheme, the invention has the following beneficial effects:
1. according to the invention, the high-order brake lamp and the millimeter wave radar are fused to obtain the brake lamp fusion radar, and compared with the application scenes of separate placement or partial integration of a radio frequency board of the millimeter wave radar, a baseband board of the millimeter wave radar, a car light control circuit board, a car light luminous lamp group and the like in the traditional fusion mode, all modules are integrated together, the integration level is higher, and meanwhile, the miniaturization design of the module is considered. The complexity of the circuit is greatly simplified, the number of boards is reduced, the cost is saved, and the circuit is attractive in appearance and is very beneficial to hiding.
2. According to the invention, the radar baseband module directly transmits the rear vehicle distance signal to the integrated module MCU control module, then the integrated module MCU control module directly judges and controls to light the brake lamp LED lamp beads 85, the process of transmission and judgment by the vehicle body domain controller 2 is not needed, obstacle detection and triggering lighting of the high-order brake lamp are directly realized in the brake lamp fusion radar 8 module, the in-module transmission of early warning information is realized, the operation processing time is saved, and more reaction time is given to a rear vehicle driver.
3. When the millimeter wave front radar, the millimeter wave front angle radar and the brake lamp fusion radar detect that a vehicle has collision risk, information is transmitted to the vehicle domain controller, the domain controller carries out fusion judgment, sends out emergency anti-collision early warning information, immediately starts emergency automatic tightening of the safety belt, simultaneously displays a rear coming vehicle warning on a vehicle-mounted display screen, and a buzzer carries out warning prompt, so that the safety of drivers and passengers can be protected, and avoidance measures can be carried out under the condition of being conditional.
Drawings
FIG. 1 is a hardware installation schematic of a vehicle anti-collision system of the present invention;
FIG. 2 is a schematic block diagram of a vehicle anti-collision system of the present invention;
FIG. 3 is an exploded view of the brake light fusion radar of the present invention;
FIG. 4 is a schematic block diagram of a brake light fusion radar of the present invention;
FIG. 5 is a schematic block diagram of a millimeter wave radar radio frequency module and a radar baseband module in the brake light fusion radar of the present invention;
FIG. 6 is a flow chart of a method of controlling a vehicle anti-collision system of the present invention;
fig. 7 is a backward collision early warning flow chart of the brake light fusion radar of the invention.
Detailed Description
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a vehicle collision preventing system, which includes a vehicle body domain controller 2, and a millimeter wave front radar 7, a millimeter wave front angle radar, a brake light fusion radar 8, a seat belt control system, a brake system 6, a display system 4, and an alarm system 5, which are connected to the vehicle body domain controller 2.
First, a vehicle 1 according to the present embodiment will be described with reference to fig. 1. Among them, the total number of the seat belt control systems is 4, and the seat belt control systems are respectively installed on the respective seats of the vehicle 1 according to 3a to 3 d. The display system 4, the alarm system 5, the braking system 6 and the millimeter wave front radar 7 are all arranged right in front of the vehicle 1, and the brake light fusion radar 8 is arranged right behind the vehicle 1. The millimeter wave front angle radar is 4 in total, and is mounted on the side front and the side rear of the vehicle 1 according to 9a to 9d, respectively.
Wherein, as shown in fig. 3, the brake light fusion radar 8 includes a car light cover 81, a car light bottom shell 82, a high frequency substrate 84, the car light bottom shell 82 is fixedly connected with a car body, the high frequency substrate 84 is arranged on the car light bottom shell 82, the car light cover 81 is connected with the car light bottom shell 82 and the car light cover 81 covers the high frequency substrate 84, a car body communication interface 83 is arranged on the car light bottom shell 82, and the high frequency substrate 84 communicates with the car body domain controller 2 through the car body communication interface 83. A brake lamp LED bead 85, a radar control area 86, and a lamp control area 87 are provided on the high-frequency substrate 84.
A millimeter wave radar radio frequency module and a radar baseband module are arranged in the radar control area 86, and the millimeter wave radar radio frequency module is connected with the radar baseband module.
Be provided with car light power module, integrated module MCU control module and the brake light drive module who links to each other with integrated module MCU control module in the car light control area 87, car light power module is used for supplying power for integrated module MCU control module, brake light drive module and brake light LED lamp pearl 85, and radar baseband module links to each other with integrated module MCU control module, and radar baseband module transmits the distance information D of the rear vehicle of gathering to integrated module MCU control module, and integrated module MCU control module passes through the CAN bus and links to each other with automobile body domain controller 2.
In the embodiment, the millimeter wave radar radio frequency module and the radar baseband module are simultaneously integrated in the radar control area 86, the car lamp control module is distributed in the car lamp control area 87, the radar control area 86 and the car lamp control area 87 are integrated on the same high-frequency substrate 84, the high integration of the car lamp and the radar module is realized, the radar and the car lamp functionality are ensured, the miniaturization design is realized, and meanwhile, the hidden installation of the radar is ensured.
Because the traditional early warning mode needs to process the echo received by the radar baseband module of the millimeter wave radar, the echo is output to the domain car body controller through the CAN bus, and then the car body domain controller 2 judges the echo and then outputs an execution command to the car lamp controller to trigger. In this embodiment, the radar control area 86 and the car light control area 87 are integrated on the same high-frequency substrate 84, the radar baseband module directly sends the rear car distance signal to the integrated module MCU control module, and then the integrated module MCU control module directly judges and controls to light the brake light LED lamp bead 85, so that the process of transmission and judgment by the car body domain controller 2 is not needed, the obstacle detection and the high-order brake light triggering lighting are directly realized in the brake light fusion radar 8 module, the processing and transmission time of the system are saved, and more reaction time is given to the rear car driver.
As shown in fig. 4, the car light power module includes a PMIC power manager and two paths of LDO linear regulators, the car body power supplies power to the PMIC power manager, and the PMIC power manager outputs different voltages through the two paths of LDO linear regulators, respectively, to supply power to the integrated module MCU control module, the brake light driving module and the brake light LED lamp beads 85.
As shown in fig. 5, the signal generated by the ramp generator in the radar baseband module of the millimeter wave radar is changed into a high-frequency signal after passing through the 20GHz synthesizer and the 4 frequency multiplier of the millimeter wave radar radio frequency module, the high-frequency signal is radiated by the transmitting antenna 72 after passing through the PA power amplifier, the high-frequency signal radiated by the transmitting antenna 72 is reflected by the object to be detected, the receiving antenna 71 receives the reflected signal, the echo signal generates an intermediate-frequency signal IF after passing through the LNA low noise amplifier and the mixer 73, and the intermediate-frequency signal IF is output to the digital front end of the radar baseband module for further processing through the analog-to-digital converter ADC.
The signals processed by the radar baseband module are output to the MCU control module of the integrated module for digital signal processing, and the signals are matched with the MCU control module of the integrated module to work together, and the signals are also provided with a QPSI Flash memory and a 40MHz external crystal oscillator. After the radar detects the risk of rear anti-collision, the brake lamp driving module is triggered, and then the brake lamp LED lamp beads 85 are lightened. Meanwhile, the integrated module MCU control module sends out a front rear collision early warning signal to the vehicle body domain controller 2 through the CAN bus, and after the vehicle body domain controller 2 receives the signal, the safety belt control module, the display system 4, the alarm system 5 and the brake system 6 are triggered.
As shown in fig. 2, the seat belt control system of this embodiment includes a seat belt MCU control module, a fall lock sensor, a motor driver, and a seat belt retractor, the seat belt MCU control module is connected with a vehicle body domain controller 2, the fall lock sensor, the lock sensor, and the motor driver are all connected with the seat belt MCU control module, and the seat belt retractor is connected with the motor driver.
As shown in fig. 2, the brake system 6 of the present embodiment includes a brake driving module connected to the vehicle body domain controller 2 and a brake module connected to the brake driving module.
As shown in fig. 2, the display system 4 of the present embodiment includes a display MCU module and a display screen, the display MCU module is connected to the vehicle body domain controller 2, and the display screen is connected to the display MCU module; the alarm system 5 comprises an alarm driving module and a buzzer module, wherein the alarm driving module is connected with the vehicle body domain controller 2, and the buzzer module is connected with the alarm driving module.
Example two
As shown in fig. 6, the present embodiment provides a control method of a vehicle collision avoidance system, comprising:
step S1, electrifying the millimeter wave front radar 7, detecting road conditions in front of a vehicle by the millimeter wave front radar 7, and outputting a forward radar target signal; the millimeter wave front angle radar is powered on, detects road conditions at the front side and the rear side of the vehicle, and outputs a front angle radar target signal and a side collision early warning signal; and the brake light fusion radar 8 is powered on, the brake light fusion radar 8 detects road conditions right behind the vehicle, and outputs a target signal of the brake light fusion radar 8 and a right-behind collision early warning signal.
And S2, the vehicle body domain controller 2 carries out fusion calculation on a forward radar target signal, a front angle radar target signal, a side collision early warning signal, a brake lamp fusion radar 8 target signal and a right-rear collision early warning signal, and judges whether the vehicle has collision risk. In order to improve the accuracy of judgment, it is necessary to perform fusion calculation on the signals output by the radars to prevent erroneous judgment. For example, the millimeter wave front radar 7 and the millimeter wave front radar 7 are far apart in detection distance, but the detected azimuth angle is narrow, which results in insufficient detection accuracy, and if it is an obstacle slightly deviated from the front of the vehicle 1, the millimeter wave front radar is required for auxiliary detection.
And step S3, if the vehicle body domain controller 2 judges that the collision risk exists in the vehicle, starting a safety belt control system, a display system 4, an alarm system 5 and a brake lamp driving module, carrying out safety early warning protection on drivers and passengers in the vehicle, and carrying out emergency risk avoidance prompt on a driver of a rear vehicle.
Specifically, in the step S1, the brake light fusion radar 8 detects the road condition right behind the vehicle, and outputs the target signal of the brake light fusion radar 8 and the collision early warning signal right behind, which specifically includes the following steps:
as shown in fig. 7, the brake light fusion radar 8 detects a vehicle behind the vehicle, acquires distance information D of the vehicle behind the vehicle, and determines the distance information D;
if the distance information D is more than or equal to 15 meters, no operation is triggered, and the brake light fusion radar 8 continues to detect the distance information D of the vehicle behind the vehicle;
if the distance information D is less than or equal to 15 meters and is 0.5 meter, judging the speed V of the rear vehicle detected by the brake light fusion radar 8:
when the speed V is less than 40KM/H and no operation is triggered, the brake light fusion radar 8 continuously detects the distance information D of the vehicle behind the vehicle;
if the speed V is more than or equal to 40KM/H, judging whether the vehicle is in a reverse gear, if so, immediately triggering a braking instruction by the vehicle body domain controller 2 to automatically brake the vehicle, and then sending a target signal of a brake lamp fusion radar 8 and a collision early warning signal right behind to the vehicle body domain controller 2; if the vehicle is not in the reverse gear, a target signal of the brake lamp fusion radar 8 and a collision early warning signal at the right rear are directly sent at the moment;
if the distance information D is less than or equal to 0.5 meter, directly judging whether the vehicle is in a reverse gear, if so, immediately triggering a braking instruction by the vehicle body domain controller 2 to automatically brake the vehicle, and then sending a target signal of a brake lamp fusion radar 8 and a collision early warning signal right behind to the vehicle body domain controller 2; if the vehicle is not in the reverse gear, a target signal of the brake lamp fusion radar 8 and a collision early warning signal right behind are directly sent to the vehicle body domain controller 2.
Specifically, in the step S3, safety precaution protection is performed on drivers and passengers in the vehicle, and emergency risk avoidance prompt is performed on the drivers of the rear vehicle, and the method specifically includes the following steps:
the vehicle body domain controller 2 sends a braking signal to the braking system 6, and the braking system 6 performs parking operation on the vehicle;
an integrated module MCU control module in the brake light fusion radar 8 lights a brake light LED lamp bead 85 through a brake light driving module, and the brake light LED lamp bead 85 performs high-brightness flicker prompt and then a driver takes emergency braking measures;
the car body domain controller 2 sends a locking signal to the safety belt control system, and for the locked driving position of the safety belt, the locked driving position is sensed through a locking sensor, and the safety belt MCU control module controls the safety belt retractor to tighten and lock the locked safety belt through a motor driver; for the driving position of the safety belt which is not locked, no operation is triggered;
the vehicle body domain controller 2 sends safety early warning signals to the display system 4 and the alarm system 5, an anti-collision safety early warning mark is displayed in the display system 4, and the alarm system 5 sends alarm sounds to remind drivers and passengers of making anti-collision preparations;
when the safety belt control module, the display system 4, the alarm system 5 and the brake lamp driving module are triggered for 5 seconds, the anti-collision early warning of the vehicle is released, and the vehicle further judges.
The technical problems, technical solutions and advantageous effects solved by the present invention have been further described in detail in the above-described embodiments, and it should be understood that the above-described embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of protection of the present invention.
Claims (9)
1. A vehicle collision avoidance system, characterized by: the system comprises a vehicle body domain controller (2), a millimeter wave front radar (7), a millimeter wave front angle radar, a brake lamp fusion radar (8), a safety belt control system, a brake system (6), a display system (4) and an alarm system (5), wherein the millimeter wave front radar, the millimeter wave front angle radar and the brake lamp fusion radar are connected with the vehicle body domain controller (2);
the stop lamp fusion radar (8) comprises a high-frequency substrate (84), wherein a stop lamp LED lamp bead (85), a radar control area (86) and a car lamp control area (87) are arranged on the high-frequency substrate (84);
a millimeter wave radar radio frequency module and a radar baseband module are arranged in the radar control area (86), and the millimeter wave radar radio frequency module is connected with the radar baseband module;
the automobile lamp control area (87) is internally provided with an automobile lamp power supply module, an integrated module MCU control module and a brake lamp driving module connected with the integrated module MCU control module, wherein the automobile lamp power supply module is used for supplying power to the integrated module MCU control module, the brake lamp driving module and a brake lamp LED lamp bead (85), the radar baseband module is connected with the integrated module MCU control module, the radar baseband module transmits acquired distance information D of a rear automobile to the integrated module MCU control module, and the integrated module MCU control module is connected with the automobile body domain controller (2) through a CAN bus;
the control method of the vehicle anti-collision system comprises the following steps:
s1, detecting road conditions right in front of a vehicle by a millimeter wave forward radar (7) and outputting a forward radar target signal; the millimeter wave front angle radar detects road conditions at the front side and the rear side of the vehicle and outputs a front angle radar target signal and a side collision early warning signal; the brake light fusion radar (8) detects road conditions right behind the vehicle and outputs a target signal and a right-behind collision early warning signal of the brake light fusion radar (8);
s2, a vehicle body domain controller (2) carries out fusion calculation on a forward radar target signal, a front angle radar target signal, a side collision early warning signal, a brake lamp fusion radar (8) target signal and a front rear collision early warning signal, and judges whether a collision risk exists in a vehicle;
and step S3, if the vehicle body domain controller (2) judges that the collision risk exists in the vehicle, starting a safety belt control system, a display system (4), an alarm system (5) and a brake lamp driving module, carrying out safety early warning protection on drivers and passengers in the vehicle, and carrying out emergency risk avoidance prompt on rear vehicle drivers.
2. The vehicle collision avoidance system of claim 1 wherein: brake lamp fuses radar (8) still includes car light face guard (81) and car light drain pan (82), car light drain pan (82) and automobile body fixed connection, high frequency base plate (84) set up on car light drain pan (82), car light face guard (81) link to each other with car light drain pan (82) just car light face guard (81) cover high frequency base plate (84), be provided with automobile body communication interface (83) on car light drain pan (82), high frequency base plate (84) communicate through automobile body communication interface (83) with automobile body domain controller (2).
3. The vehicle collision avoidance system of claim 1 wherein: the safety belt control system comprises a safety belt MCU control module, a falling lock sensor, a locking sensor, a motor driver and a safety belt retractor, wherein the safety belt MCU control module is connected with a vehicle body domain controller (2), the falling lock sensor, the locking sensor and the motor driver are connected with the safety belt MCU control module, and the safety belt retractor is connected with the motor driver.
4. The vehicle collision avoidance system of claim 1 wherein: the braking system (6) comprises a braking driving module and a braking module, wherein the braking driving module is connected with the vehicle body domain controller (2), and the braking module is connected with the braking driving module.
5. The vehicle collision avoidance system of claim 1 wherein: the display system (4) comprises a display MCU module and a display screen, wherein the display MCU module is connected with the vehicle body domain controller (2), and the display screen is connected with the display MCU module.
6. The vehicle collision avoidance system of claim 1 wherein: the alarm system (5) comprises an alarm driving module and a buzzer module, wherein the alarm driving module is connected with the vehicle body domain controller (2), and the buzzer module is connected with the alarm driving module.
7. The vehicle collision avoidance system of claim 1 wherein: the millimeter wave front angle radars are provided in 4 numbers, and the 4 millimeter wave front angle radars are provided in the front side and the rear side of the vehicle, respectively.
8. The vehicle anti-collision system according to claim 1, wherein in the step S1, the brake light fusion radar (8) detects a road condition right behind the vehicle, and outputs a target signal and a right-behind collision warning signal of the brake light fusion radar (8), and specifically comprises the following steps:
the brake lamp fusion radar (8) detects a vehicle behind the vehicle, acquires distance information D of the vehicle behind the vehicle, and judges the distance information D;
if the distance information D is more than or equal to 15 meters, no operation is triggered, and the brake lamp fusion radar (8) continues to detect the distance information D of the vehicle behind the vehicle;
if the distance information D is less than or equal to 15 meters and is 0.5 meter, judging the speed V of the rear vehicle detected by the brake light fusion radar (8):
when the speed V is less than 40KM/H and no operation is triggered, the brake lamp fusion radar (8) continuously detects the distance information D of the vehicle behind the vehicle;
if the speed V is more than or equal to 40KM/H, judging whether the vehicle is in a reverse gear, if so, triggering a braking instruction by a vehicle body domain controller (2) to automatically brake the vehicle, and then sending a target signal of a brake lamp fusion radar (8) and a collision early warning signal right behind to the vehicle body domain controller (2); if the vehicle is not in the reverse gear, a target signal of a brake lamp fusion radar (8) and a collision early warning signal at the right rear are sent;
if the distance information D is less than or equal to 0.5 meter, judging whether the vehicle is in a reverse gear, if so, triggering a braking instruction by the vehicle body domain controller (2) to automatically brake the vehicle, and then sending a target signal of a brake lamp fusion radar (8) and a collision early warning signal right behind to the vehicle body domain controller (2); and if the vehicle is not in the reverse gear, sending a target signal of a brake lamp fusion radar (8) and a right-rear collision early warning signal to the vehicle body domain controller (2).
9. The anti-collision system of claim 1, wherein in step S3, safety precaution protection is performed for occupants in the vehicle, and emergency risk avoidance prompt is performed for the rear vehicle driver, and the method specifically comprises the following steps:
the vehicle body domain controller (2) sends a braking signal to the braking system (6), and the braking system (6) performs parking operation on the vehicle;
an integrated module MCU control module in the brake light fusion radar (8) lights a brake light LED lamp bead (85) through a brake light driving module, and after the brake light LED lamp bead (85) performs flicker prompt, a driver takes emergency braking measures;
the vehicle body domain controller (2) sends a locking signal to the safety belt control system, and the safety belt control system actively tightens the safety belt for the driving position where the safety belt is locked;
the vehicle body domain controller (2) sends a safety early warning signal to the display system (4) and the alarm system (5), an anti-collision safety early warning mark is displayed in the display system (4), and the alarm system (5) sends out alarm ringing.
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| CN205131237U (en) * | 2015-07-31 | 2016-04-06 | 张文超 | System for automatic adjustment speed of a motor vehicle |
| CN106708040A (en) * | 2016-12-09 | 2017-05-24 | 重庆长安汽车股份有限公司 | Sensor module of automatic driving system, automatic driving system and automatic driving method |
| CN107878307A (en) * | 2016-09-30 | 2018-04-06 | 法乐第(北京)网络科技有限公司 | The device that a kind of pre- anti-vehicle is knocked into the back |
| CN212273918U (en) * | 2020-05-13 | 2021-01-01 | 丽清汽车科技(上海)有限公司 | High-order brake LED module with millimeter wave radar |
| AU2020103222A4 (en) * | 2020-11-04 | 2021-01-14 | Vemu Institute of Technology | Autonomous navigation, guidance and control based on artificial intelligence for the vehicular systems |
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| CN205131237U (en) * | 2015-07-31 | 2016-04-06 | 张文超 | System for automatic adjustment speed of a motor vehicle |
| CN107878307A (en) * | 2016-09-30 | 2018-04-06 | 法乐第(北京)网络科技有限公司 | The device that a kind of pre- anti-vehicle is knocked into the back |
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