Early-warning device and method preventing chain rear-end collisions of vehicles

An early warning device and vehicle technology, applied in collision avoidance systems and other directions, can solve the problems that serial rear-end traffic accidents cannot be effectively prevented, technically difficult, and difficult to achieve, and achieve intuitive warning results, low investment costs, and reliability. high effect

Active Publication Date: 2014-08-06
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preventive devices for rear-end collision accidents are basically based on detecting the distance between the vehicle directly in front of the vehicle and the vehicle, and generally use the distance required for emergency braking of the vehicle as the threshold, which makes the control of the device have cert...

Method used

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  • Early-warning device and method preventing chain rear-end collisions of vehicles
  • Early-warning device and method preventing chain rear-end collisions of vehicles
  • Early-warning device and method preventing chain rear-end collisions of vehicles

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Embodiment Construction

[0033] refer to figure 2 , is a hardware connection schematic diagram of an early warning device for preventing serial rear-end collisions of vehicles of the present invention; the device includes a microprocessor 6, a vehicle-mounted CAN bus, and a vehicle speed sensor 8 connected to the vehicle-mounted CAN bus, which is used to detect multiple The relative speed, relative angle, and relative distance of the vehicle relative to the vehicle 1, and the motion state data are transmitted to the millimeter-wave radar 4 of the vehicle-mounted CAN bus, which is used to extract the relative distance of multiple vehicles in front of the vehicle on the vehicle-mounted CAN bus. The CAN bus converter 5 of the motion status data of the car and the speed of this car is used to prompt the signal lamp 7 that the nearest front car and the second nearest front car brake.

[0034] The microprocessor calculates and determines the nearest preceding vehicle and the second nearest preceding vehicl...

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Abstract

The invention relates to the field of motor vehicle driving safety and discloses an early-warning device and method preventing chain rear-end collisions of vehicles. The device comprises a microprocessor, a vehicle-mounted CAN bus, a vehicle speed sensor of the vehicle, a millimeter-wave radar, a CAN bus converter and a signal lamp. The vehicle speed sensor of the vehicle is connected with the vehicle-mounted CAN bus. The millimeter-wave radar is used for detecting relative speeds, relative angles and relative distances, relative to the vehicle, of the multiple vehicles in front of the vehicle and transmitting motion state data to the vehicle-mounted CAN bus. The CAN bus converter is used for extracting motion state data, relative to the vehicle, of the vehicles in front of the vehicle on the vehicle-mounted CAN bus and the speed of the vehicle. The signal lamp is used for reminding people of braking occurrence of the nearest vehicle and the nearer vehicle. The device can detect the motion states of the nearest vehicle and the nearer vehicle in front of the vehicle in advance and remind a driver about safety, so that the driver operates the vehicle in advance, and then the rear-end collision accident is avoided.

Description

technical field [0001] The invention relates to the field of driving safety of motor vehicles, in particular to an early warning device and an early warning method for preventing serial rear-end collisions of vehicles. Background technique [0002] Rear-end collision is a common serious traffic accident. It is closely related to whether the driver can obtain the motion status of other vehicles in front of the vehicle in time. Statistics show that rear-end collision has caused a large number of traffic accidents and brought huge losses to people's lives and properties. . During the normal driving process, the driver operates the vehicle according to the change of the motion state of the vehicle in front or the motion state of other traffic participants in front of the vehicle, so as to ensure the safety of driving. [0003] A typical rear-end collision situation is that the front and rear vehicles do not maintain a safe distance during driving. After the front vehicle brakes...

Claims

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Application Information

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IPC IPC(8): G08G1/16
Inventor 王畅吴付威付锐郭应时袁伟
Owner CHANGAN UNIV
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