CN114670772B - Automatic auxiliary system for automobile safety - Google Patents

Automatic auxiliary system for automobile safety Download PDF

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Publication number
CN114670772B
CN114670772B CN202210333644.7A CN202210333644A CN114670772B CN 114670772 B CN114670772 B CN 114670772B CN 202210333644 A CN202210333644 A CN 202210333644A CN 114670772 B CN114670772 B CN 114670772B
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push rod
electric push
microcontroller
detection unit
automobile
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CN114670772A (en
Inventor
郭树满
周瑜
王丽君
王世昌
李权才
郭朋彦
高玉国
秦朝举
黄福军
侯中兰
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North China University of Water Resources and Electric Power
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North China University of Water Resources and Electric Power
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/13—Roll-over protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/12—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action
    • B60T1/14—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action directly on road
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01252—Devices other than bags
    • B60R2021/01259—Brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01304—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring rough road condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01306—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring vehicle inclination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01308—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring distance between vehicle body and road
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/13—Roll-over protection
    • B60R2021/138—Roll-over protection using external airbags

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Regulating Braking Force (AREA)
  • Air Bags (AREA)

Abstract

一种汽车安全自动辅助系统，所述辅助系统包括安装于车上的微控制器，以及与微控制器连接的侧滑检测单元、倾翻检测单元、开入悬崖沟渠检测单元和辅助执行单元，所述辅助执行单元包括安全气囊和可伸缩制动装置。本发明利用电感调频式位移传感器、微控制器、单目摄像头、车载电脑、电动伸缩杆、超声波传感器和安全气囊等装置实现了一种汽车安全自动辅助系统，可以避免上述事故的发生，极大的减少人员受伤风险，具有较好的实用价值和应用前景。

An automatic safety assistance system for automobiles. The auxiliary system includes a microcontroller installed on the vehicle, and a sideslip detection unit, a rollover detection unit, a cliff ditch entry detection unit and an auxiliary execution unit connected to the microcontroller, The auxiliary actuator unit includes airbags and retractable braking devices. The present invention uses inductive frequency modulation displacement sensors, microcontrollers, monocular cameras, on-board computers, electric telescopic rods, ultrasonic sensors, airbags and other devices to implement an automatic automobile safety assistance system, which can avoid the occurrence of the above accidents and greatly It can reduce the risk of personal injury and has good practical value and application prospects.

Description

一种汽车安全自动辅助系统An automatic vehicle safety assistance system

技术领域Technical field

本发明涉及汽车安全防护领域，具体涉及一种汽车安全自动辅助系统。The invention relates to the field of automobile safety protection, and in particular to an automatic automobile safety assistance system.

背景技术Background technique

汽车交通安全问题一直以来是社会的重点关注对象，雨雪天气可能会导致汽车的侧滑，高速过弯可能会导致汽车的倾翻，汽车盲区的存在可能会导致汽车驶入沟渠悬崖等等，现在汽车上尚未安装可用于避免此类事故发生的汽车安全辅助系统。Car traffic safety issues have always been a key concern of society. Rain and snow may cause cars to slide sideways, high-speed cornering may cause cars to overturn, and the existence of car blind spots may cause cars to drive into ditches and cliffs, etc. There are currently no automotive safety assistance systems installed in cars that can help prevent such accidents.

发明内容Contents of the invention

为解决上述问题，提供一种汽车安全自动辅助系统。In order to solve the above problems, an automatic automobile safety assistance system is provided.

本发明的目的是以下述方式实现的：The purpose of the present invention is achieved in the following manner:

一种汽车安全自动辅助系统，所述辅助系统包括安装于车上的微控制器，以及与微控制器连接的侧滑检测单元、倾翻检测单元、开入悬崖沟渠检测单元和辅助执行单元，所述辅助执行单元包括安全气囊和可伸缩制动装置。An automatic car safety assistance system, the auxiliary system includes a microcontroller installed on the vehicle, and a sideslip detection unit, a rollover detection unit, a cliff ditch entry detection unit and an auxiliary execution unit connected to the microcontroller, The auxiliary actuator unit includes airbags and retractable braking devices.

所述侧滑检测单元包括电感调频式位移传感器和倍频电路；所述电感调频式位移传感器的输出端与倍频电路的输入连接，倍频电路的输出与微控制器的输入端连接，所述电感调频式位移传感器将侧滑量转换成数字频率后通过倍频电路放大信号后，发送到微控制器。The sideslip detection unit includes an inductive frequency modulated displacement sensor and a frequency doubling circuit; the output end of the inductive frequency modulated displacement sensor is connected to the input end of the frequency doubling circuit, and the output end of the frequency doubling circuit is connected to the input end of the microcontroller, so The inductive frequency modulated displacement sensor converts the side slip amount into a digital frequency, amplifies the signal through a frequency multiplier circuit, and then sends it to the microcontroller.

所述倾翻检测单元包括固定在车头的单目摄像头传感器、安装于车上的PC机，所述单目摄像头传感器拍摄前方道路，将视频实时传送到PC机上，在PC机上利用MATLAB进行每一帧图像的检测，比对图像的倾斜度，来判断汽车是否将要发生倾翻事故，当判断为将要发生倾翻的时候，将信号发送到微控制器。The tipping detection unit includes a monocular camera sensor fixed on the front of the car and a PC installed on the car. The monocular camera sensor captures the road ahead and transmits the video to the PC in real time. MATLAB is used on the PC to perform each step. Detect the frame image and compare the inclination of the image to determine whether the car is about to tip over. When it is determined that the car is about to tip over, a signal is sent to the microcontroller.

所述开入悬崖沟渠检测单元包括超声波传感器，所述超声波传感器检测车体与地面的距离，并将距离数据发送至微控制器中。The cliff ditch detection unit includes an ultrasonic sensor that detects the distance between the vehicle body and the ground and sends the distance data to the microcontroller.

所述安全气囊分别安装在汽车的前后尾杠和汽车的侧面。The airbags are respectively installed on the front and rear tail bumpers of the car and the sides of the car.

所述可伸缩制动装置安装在汽车重心处的底盘下方，所述可伸缩制动装置包括第一电动推杆、第二电动推杆、第三电动推杆和固定件，第二电动推杆和第三电动推杆分别设在第一电动推杆的两侧，所述固定件固定在底盘下方，固定件上设置第一销孔，所述第一电动推杆、第二电动推杆和第三电动推杆的推杆顶部的第二销孔与第一销孔通过销轴连接，第一电动推杆、第二电动推杆和第三电动推杆均能绕销轴摆动，第二电动推杆和第三电动推杆的底座固定在第一电动推杆的推杆上部。The retractable braking device is installed under the chassis at the center of gravity of the car. The retractable braking device includes a first electric push rod, a second electric push rod, a third electric push rod and a fixing member. The second electric push rod and third electric push rods are respectively provided on both sides of the first electric push rod. The fixing member is fixed below the chassis. A first pin hole is provided on the fixing member. The first electric push rod, the second electric push rod and The second pin hole at the top of the push rod of the third electric push rod is connected with the first pin hole through a pin shaft. The first electric push rod, the second electric push rod and the third electric push rod can all swing around the pin shaft. The bases of the electric push rod and the third electric push rod are fixed on the upper part of the push rod of the first electric push rod.

所述固定件包括固定部和连接部，所述连接部与固定部垂直设置，所述连接部上设置第一销孔。The fixing part includes a fixing part and a connecting part, the connecting part is arranged perpendicularly to the fixing part, and a first pin hole is provided on the connecting part.

所述第一电动推杆的底座下设置有硅橡胶防滑垫。A silicone rubber anti-slip pad is provided under the base of the first electric push rod.

所述微控制器为单片机。The microcontroller is a single chip microcomputer.

本发明的有益效果：本发明利用电感调频式位移传感器、微控制器、单目摄像头、车载电脑、电动伸缩杆、超声波传感器和安全气囊等装置实现了一种汽车安全自动辅助系统，可以避免上述事故的发生，极大的减少人员受伤风险，具有较好的实用价值和应用前景。Beneficial effects of the present invention: The present invention uses inductive frequency modulated displacement sensors, microcontrollers, monocular cameras, on-board computers, electric telescopic rods, ultrasonic sensors, airbags and other devices to implement an automatic automobile safety assistance system, which can avoid the above The occurrence of accidents greatly reduces the risk of personal injury and has good practical value and application prospects.

附图说明Description of the drawings

图1是本发明的原理图。Figure 1 is a schematic diagram of the present invention.

图2是本发明的可伸缩制动装置的结构图。Figure 2 is a structural diagram of the retractable braking device of the present invention.

图3是本发明的可伸缩制动装置折叠状态的示意图。Figure 3 is a schematic diagram of the retractable braking device of the present invention in a folded state.

图4是本发明的电动伸缩杆的结构示意图。Figure 4 is a schematic structural diagram of the electric telescopic pole of the present invention.

图5是本发明的固定件的结构示意图。Figure 5 is a schematic structural diagram of the fixing member of the present invention.

图6是本发明的安全气囊的安装示意图。Figure 6 is a schematic diagram of the installation of the airbag of the present invention.

其中1-底盘，2-第一电动推杆，3-第二电动推杆，4-第三电动推杆，5-固定件，51-固定部，52-连接部，6-第一销孔，7-第二销孔，8-销轴，9-硅橡胶防滑垫，10-推杆，11-底座，12-安全气囊，13-超声波传感器。Among them, 1-chassis, 2-first electric push rod, 3-second electric push rod, 4-third electric push rod, 5-fixing piece, 51-fixing part, 52-connecting part, 6-first pin hole , 7-Second pin hole, 8-Pin shaft, 9-Silicone anti-slip pad, 10-Push rod, 11-Base, 12-Airbag, 13-Ultrasonic sensor.

具体实施方式Detailed ways

下面结合附图和具体实施方式对本发明作进一步详细的说明。The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

应该指出，以下详细说明都是例式性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本 申请所属技术领域的普通技术人员通常理解的技术含义相同。It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same technical meanings commonly understood by one of ordinary skill in the art to which this application belongs.

一种汽车安全自动辅助系统，所述辅助系统包括安装于车上的微控制器，以及与微控制器连接的侧滑检测单元、倾翻检测单元、开入悬崖沟渠检测单元和辅助执行单元，所述辅助执行单元包括安全气囊和可伸缩制动装置。An automatic car safety assistance system, the auxiliary system includes a microcontroller installed on the vehicle, and a sideslip detection unit, a rollover detection unit, a cliff ditch entry detection unit and an auxiliary execution unit connected to the microcontroller, The auxiliary actuator unit includes airbags and retractable braking devices.

所述侧滑检测单元包括电感调频式位移传感器和倍频电路；所述电感调频式位移传感器的输出端与倍频电路的输入连接，倍频电路的输出与微控制器的输入端连接，所述电感调频式位移传感器将侧滑量转换成数字频率后通过倍频电路放大信号后，发送到微控制器。The sideslip detection unit includes an inductive frequency modulated displacement sensor and a frequency doubling circuit; the output end of the inductive frequency modulated displacement sensor is connected to the input end of the frequency doubling circuit, and the output end of the frequency doubling circuit is connected to the input end of the microcontroller, so The inductive frequency modulated displacement sensor converts the side slip amount into a digital frequency, amplifies the signal through a frequency multiplier circuit, and then sends it to the microcontroller.

所述倾翻检测单元包括固定在车头的单目摄像头传感器、安装于车上的PC机，所述单目摄像头传感器拍摄前方道路，将视频实时传送到PC机上，在PC机上利用MATLAB进行每一帧图像的检测，比对图像的倾斜度，来判断汽车是否将要发生倾翻事故，当判断为将要发生倾翻的时候，将信号发送到微控制器。The tipping detection unit includes a monocular camera sensor fixed on the front of the car and a PC installed on the car. The monocular camera sensor captures the road ahead and transmits the video to the PC in real time. MATLAB is used on the PC to perform each step. Detect the frame image and compare the inclination of the image to determine whether the car is about to tip over. When it is determined that the car is about to tip over, a signal is sent to the microcontroller.

所述开入悬崖沟渠检测单元包括超声波传感器，所述超声波传感器检测车体与地面的距离，并将距离数据发送至微控制器中。The cliff ditch detection unit includes an ultrasonic sensor that detects the distance between the vehicle body and the ground and sends the distance data to the microcontroller.

所述安全气囊分别安装在汽车的前后尾杠和汽车的侧面。The airbags are respectively installed on the front and rear tail bumpers of the car and the sides of the car.

所述可伸缩制动装置安装在汽车重心处的底盘1下方，所述可伸缩制动装置包括第一电动推杆2、第二电动推杆3、第三电动推杆4和固定件5，第二电动推杆3和第三电动推杆4分别设在第一电动推杆2的两侧，所述固定件5固定在底盘1下方，固定件5上设置第一销孔6，所述第一电动推杆2、第二电动推杆3和第三电动推杆4的推杆10顶部的第二销孔7与第一销孔6通过销轴8连接，第一电动推杆2、第二电动推杆3和第三电动推杆4均能绕销轴8摆动，第二电动推杆3和第三电动推杆4的底座11固定在第一电动推杆2的推杆上部。The retractable braking device is installed below the chassis 1 at the center of gravity of the car. The retractable braking device includes a first electric push rod 2, a second electric push rod 3, a third electric push rod 4 and a fixing member 5. The second electric push rod 3 and the third electric push rod 4 are respectively provided on both sides of the first electric push rod 2. The fixing part 5 is fixed below the chassis 1. The fixing part 5 is provided with a first pin hole 6. The second pin hole 7 on the top of the push rod 10 of the first electric push rod 2, the second electric push rod 3 and the third electric push rod 4 is connected with the first pin hole 6 through the pin shaft 8. The first electric push rod 2, Both the second electric push rod 3 and the third electric push rod 4 can swing around the pin 8 . The bases 11 of the second electric push rod 3 and the third electric push rod 4 are fixed on the upper part of the push rod of the first electric push rod 2 .

所述固定件包括固定部51和连接部52，所述连接部52与固定部51垂直设置，所述连接部52上设置第一销孔6。The fixing part includes a fixing part 51 and a connecting part 52. The connecting part 52 is arranged perpendicularly to the fixing part 51. The connecting part 52 is provided with a first pin hole 6.

所述第一电动推杆的底座下设置有摩擦硅橡胶。Friction silicone rubber is provided under the base of the first electric push rod.

所述微控制器为单片机。The microcontroller is a single chip microcomputer.

如图3所示，可伸缩制动装置的初始状态紧贴在汽车底盘1下方，第二电动推杆3为收缩状态，第三电动推杆4为伸长状态，第一电动推杆2在第二电动推杆3的拉力作用下紧贴在汽车底盘1。As shown in Figure 3, the initial state of the retractable braking device is close to the bottom of the car chassis 1. The second electric push rod 3 is in a contracted state, the third electric push rod 4 is in an extended state, and the first electric push rod 2 is in The second electric push rod 3 is tightly attached to the automobile chassis 1 under the action of pulling force.

本发明具有以下几种工作情况：The invention has the following working conditions:

1、侧滑安全辅助：1. Side slip safety assistance:

采用电感调频式位移传感器，将侧滑量转换成数字频率通过倍频电路放大信号后，发送到8031单片机进行处理，并且在汽车侧滑量过大的情况下进行报警显示。An inductive frequency-modulated displacement sensor is used to convert the side slip amount into a digital frequency and amplify the signal through a frequency multiplier circuit, then send it to the 8031 microcontroller for processing, and provide an alarm display when the vehicle side slip amount is too large.

当发生汽车侧滑量过大时，单片机控制第二电动推杆3伸长、第三电动推杆4收缩，将第一电动推杆2拉到垂直于地面的角度，然后第一电动推杆2将推杆伸长，第一电动推杆2的底部推进到地面，此时早已安装在第一电动推杆2底部的硅橡胶防滑垫接触到地面，和地面产生摩擦力，防止汽车继续侧滑。When the vehicle sideslip is too large, the microcontroller controls the second electric push rod 3 to extend and the third electric push rod 4 to contract, pulling the first electric push rod 2 to an angle perpendicular to the ground, and then the first electric push rod 2 2. Extend the push rod and push the bottom of the first electric push rod 2 to the ground. At this time, the silicone rubber anti-slip pad already installed at the bottom of the first electric push rod 2 contacts the ground and generates friction with the ground to prevent the car from continuing to sideways. slip.

2、倾翻安全辅助：2. Tip-over safety assistance:

固定在车头的摄像头拍摄前方道路，将视频实时传送到车载PC机上，在PC机上利用MATLAB进行每一帧图像的检测，比对图像的倾斜度，来判断汽车是否将要发生倾翻事故。当判断将要发生倾翻的时候，PC机将报警信号发送到单片机中，单片机控制第二电动推杆3和第三电动推杆4动作，将第一电动推杆2向将要倾翻的一侧进行伸长，利用可伸缩制动装置的冲力将汽车纠正过来。若无法避免倾翻，则单片机控制将倾翻一侧的安全气囊12弹开缓冲汽车倾翻的冲撞力，来保护人员安全。The camera fixed on the front of the car captures the road ahead and transmits the video to the on-board PC in real time. MATLAB is used on the PC to detect each frame of the image and compare the inclination of the image to determine whether the car is about to overturn. When it is judged that tipping is about to occur, the PC sends an alarm signal to the microcontroller, and the microcontroller controls the second electric push rod 3 and the third electric push rod 4 to move the first electric push rod 2 to the side that is about to tip over. Extend and use the momentum of the retractable brakes to right the car. If tipping cannot be avoided, the single-chip microcomputer controls the airbag 12 on the tipping side to be deployed to buffer the impact force of the car tipping to protect personnel safety.

其中，单片机通过安全气囊驱动电路来控制安全气囊的弹开，安全气囊驱动电路和安全气囊的结构均为现有技术，具体可参见专利CN201720911045.3中记载的结构。Among them, the single-chip microcomputer controls the pop-up of the airbag through the airbag drive circuit. The structures of the airbag drive circuit and the airbag are both existing technologies. For details, please refer to the structure recorded in patent CN201720911045.3.

3、进入悬崖沟壑安全辅助：3. Safety assistance when entering cliffs and ravines:

在气囊安装的同位置安装多个超声波传感器13，让超声波传感器垂直向下，检测车体与地面的距离，当汽车进入悬崖沟壑的时候，超声波传感器会检测到某个车体部位已经掉入，此时查看摄像头数据，当固定在车头的摄像头拍摄画面中失去道路参照物，则判断为掉入悬崖沟壑，此时单片机快速将报警的超声波传感器位置上的安全气囊弹开，进行车体冲撞力缓冲，保护人员安全。Install multiple ultrasonic sensors 13 at the same position where the airbag is installed, and let the ultrasonic sensors go vertically downward to detect the distance between the car body and the ground. When the car enters a cliff ravine, the ultrasonic sensors will detect that a certain part of the car body has fallen into it. Check the camera data at this time. When the road reference object is lost in the picture taken by the camera fixed on the front of the car, it is judged that it has fallen into a cliff ravine. At this time, the microcontroller quickly pops up the airbag at the position of the ultrasonic sensor that alarms, and the car body impacts. Buffer to protect personnel safety.

以上所述的仅是本发明的优选实施方式，应当指出，对于本领域的技术人员来说，在不脱离本发明整体构思前提下，还可以作出若干改变和改进，这些也应该视为本发明的保护范围。What is described above is only the preferred embodiment of the present invention. It should be noted that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the present invention. scope of protection.

Claims (5)

1. An automatic auxiliary system for automobile safety is characterized in that: the auxiliary system comprises a microcontroller arranged on the vehicle, and a sideslip detection unit, a tipping detection unit, a cliff opening detection unit and an auxiliary execution unit which are connected with the microcontroller, wherein the auxiliary execution unit comprises an air bag and a telescopic braking device;
the sideslip detection unit comprises an inductance frequency modulation type displacement sensor and a frequency doubling circuit; the output end of the inductance frequency modulation type displacement sensor is connected with the input end of the frequency doubling circuit, the output end of the frequency doubling circuit is connected with the input end of the microcontroller, and the inductance frequency modulation type displacement sensor converts sideslip quantity into digital frequency and amplifies signals through the frequency doubling circuit and sends the signals to the microcontroller;
the telescopic braking device is arranged below a chassis (1) at the center of gravity of the automobile and comprises a first electric push rod (2), a second electric push rod (3), a third electric push rod (4) and fixing pieces (5), wherein the second electric push rod (3) and the third electric push rod (4) are respectively arranged on two sides of the first electric push rod (2), the fixing pieces (5) are fixed below the chassis (1), first pin holes (6) are formed in the fixing pieces (5), second pin holes (7) at the tops of the first electric push rod (2), the second electric push rod (3) and the third electric push rod (4) are connected with the first pin holes (6) through pin shafts (8), and the first electric push rod (2), the second electric push rod (3) and the third electric push rod (4) can swing around the pin shafts (8), and bases of the second electric push rod (3) and the third electric push rod (4) are fixed on the upper parts of the push rods of the first electric push rod (2);
the tipping detection unit comprises a monocular camera sensor fixed on a vehicle head and a PC (personal computer) arranged on the vehicle, wherein the monocular camera sensor shoots a front road, video is transmitted to the PC in real time, MATLAB is used for detecting each frame of image on the PC, the inclination of the images is compared to judge whether the vehicle is about to have a tipping accident, and when the vehicle is judged to have the tipping, a signal is sent to the microcontroller; the microcontroller controls the second electric push rod and the third electric push rod to act, the first electric push rod extends to the side to be tipped, and the impact of the telescopic braking device is utilized to correct the automobile; if the rollover cannot be avoided, the microcontroller controls the airbag on one side of the rollover to spring out to buffer the collision force of the vehicle rollover;
the cliff-entering ditch detection unit comprises a plurality of ultrasonic sensors, wherein the ultrasonic sensors are arranged at the same position where the safety airbag is arranged, the ultrasonic sensors are vertically downward and are used for detecting the distance between a vehicle body and the ground, and distance data are sent to the microcontroller; when an automobile enters the cliff, the ultrasonic sensor detects that a certain automobile body part falls into the cliff, at the moment, the camera data is checked, when a road reference object is lost in a camera shooting picture fixed on the automobile head, the automobile is judged to fall into the cliff, at the moment, the singlechip rapidly bounces off an airbag at the position of the ultrasonic sensor for alarming, and the automobile body collision force is buffered.
2. The automotive safety automatic assistance system according to claim 1, wherein: the safety air bags are respectively arranged on the front tail bar, the rear tail bar and the side face of the automobile.
3. The automotive safety automatic assistance system according to claim 1, wherein: the fixing piece (5) comprises a fixing portion (51) and a connecting portion (52), the connecting portion (52) is perpendicular to the fixing portion (51), and a first pin hole (6) is formed in the connecting portion (52).
4. The automotive safety automatic assistance system according to claim 1, wherein: and a silicon rubber anti-slip pad (9) is arranged below the base of the first electric push rod.
5. The automotive safety automatic assistance system according to claim 1, wherein: the microcontroller is a singlechip.
CN202210333644.7A 2022-03-31 2022-03-31 Automatic auxiliary system for automobile safety Active CN114670772B (en)

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