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Vehicle door anti-collision early warning device

An early warning device and anti-collision technology, applied in signal devices and other directions, can solve problems such as safety accidents, external moving vehicle collisions, no early warning, etc., and achieve the effects of narrow emission spectrum, simple use, and low cost

Pending Publication Date: 2018-02-09
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a car door anti-collision warning device to solve the existing technical problem that the car is easy to collide with an external moving vehicle and cause a safety accident because there is no warning when the car door is opened after the car is parked.

Method used

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  • Vehicle door anti-collision early warning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The body length of motorcycle B is 1.8m, the distance between car B and car A is 50m, and motorcycle B drives towards the stopped car A at 45km / h. The radar sensor on car A emits high-frequency radar waves to the rear, and the radar waves are emitted after encountering car B. The emitted and reflected radar wave signals are transmitted to the DSP, and the program in the DSP starts to run. The difference between the rising and falling phases of the frequency of the two signals at the same time determines that the object B is a moving object; the program continues to run, and then through the relationship between the two signals, it is judged that the object B is approaching the car A, and the car B is approaching the car A The speed, distance and the time required for car B to leave car A at this speed, and the time required for car B to leave car A at this speed:

[0036]

[0037] t 1 ≥t 0 =2.28s, that is, the time for car B to leave car A is greater than the thres...

Embodiment 2

[0039] The body length of car B is 1.5m, the distance between car B and car A is 20m, and car B drives to the stopped car A at 50km / h. The radar sensor on car A emits high-frequency radar waves to the rear, and the radar waves are emitted after encountering car B. The emitted and reflected radar wave signals are transmitted to the DSP, and the program in the DSP starts to run. The difference between the rising and falling phases of the frequency of the two signals at the same time determines that the object B is a moving object; the program continues to run, and then through the relationship between the two signals, it is judged that the object B is approaching the car A, and the car B is approaching the car A The speed, distance and the time required for car B to leave car A at this speed, and the time required for car B to leave car A at this speed:

[0040]

[0041] t 2 ≤t 0 , the time for car B to leave car A is less than the threshold for safe door opening, the DSP t...

Embodiment 3

[0044] The body length of car B is 4.5m, the distance between car B and car A is 50m, and the speed is 60km / h, the time required for car B to leave car A at this speed is:

[0045]

[0046] t 3 ≥t 0 =2.28s, that is, the time for car B to leave car A is greater than the threshold value for safe door opening, and the DSP controls the voice alarm unit to issue a prompt of "the door can be opened".

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PUM

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Abstract

The invention belongs to the field of vehicle safety, and discloses a vehicle door anti-collision early warning device. The vehicle door anti-collision early warning device works through the followingsteps of when a vehicle is parked, detecting rear mobile objects through a continuous wave radar; screening out filtered signals of static objects and filtered signals of objects away from the parkedvehicle; processing echoed signals of the objects approaching the parked vehicle; calculating out the relative distance, the relative speed and the relative acceleration of the mobile objects and theparked vehicle; contrasting the safety distance and the safety time between the parked vehicle and suspicious dangerous objects through a DSP microprocessor, and judging the safety; when the safety is lower than a certain extent, enabling an alarming system to remind a driver and a passenger of the danger possibly existing when opening a vehicle door in time; and when the vehicle is in an emergency condition, performing vehicle door locking. Through the adoption of the vehicle door anti-collision early warning device disclosed by the invention, the conventional technical problem that after the vehicle is parked, early warning is not generated when people open the vehicle door, so that the vehicle door collides with external mobile vehicles, and safety accidents are generated is solved.

Description

technical field [0001] The invention relates to the field of automobile safety, in particular to a car door anti-collision warning device. Background technique [0002] Automobiles are one of the main means of transportation modernization, and the acceleration of intelligent transportation has promoted the revolutionary development of transportation. Intelligent transportation can maximize the efficiency and safety of automobile transportation. The continuous improvement of the intelligent level of automobiles is one of the important factors. At the same time, strengthening the communication between automobiles and external environmental information is also an indispensable factor. According to statistics from the Traffic Management Bureau of the Ministry of Public Security, the number of motor vehicles and motor vehicle drivers in the country will continue to grow rapidly in 2017. With the increase in the number of motor vehicles and the frequency of use, the potential saf...

Claims

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Application Information

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IPC IPC(8): B60Q9/00
CPCB60Q9/00
Inventor 李军政周瑶琴李小阳彭姣春吴卫东
Owner HUNAN AGRICULTURAL UNIV