KR950017507A

KR950017507A - Vehicle anti-collision device using dual processor and stability distance between cars and method

Info

Publication number: KR950017507A
Application number: KR1019930030578A
Authority: KR
Inventors: 송제석
Original assignee: 김주용; 현대전자산업 주식회사
Priority date: 1993-12-29
Filing date: 1993-12-29
Publication date: 1995-07-20
Also published as: KR960015736B1

Abstract

본 발명은 자동차의 주행시 발생 가능한 충돌 위험을 미리 감지하여 자동차의 충돌 위험을 경보하고 제거하는 차량 충돌 방지 장치에 있어서, 차량 내의 전자 간섭과 상호 라인의 영향 및 프로세서의 부담을 줄이기 위해 이중 프로세서를 사용하여 전방에서 주행중인 차량과의 거리를 계속 감지 함으로써, 충돌 위험이 예상되는 거리 이내로 차간 거리가 줄어들면 충돌 위험을 경보할 수 있도록 한 이중 프로세서와 차간 안정 거리를 사용한 자동차 충돌 방지 장치 및 그 방법에 관한 것으로, 종래의 차량 충돌 방지 장치는 단일 프로세서를 사용하여 소프트 웨어의 루프 시간이 제약을 받으며, 소프트 웨어가 처리해야 하는 일이 많아 흐름도 자체도 복잡 함으로써, 추후의 기능 추가나 다른 장치와의 접목시에 큰 제약은 물론 불가능한 경우도 발생하게 되는 문제점이 있었다.The present invention provides a vehicle collision prevention device that detects a collision risk that may occur during driving of a vehicle in advance, and alerts and removes a collision risk of a vehicle, and uses a dual processor to reduce the influence of the electromagnetic interference and mutual lines in the vehicle, and the burden on the processor. By detecting the distance from the vehicle in front of the vehicle ahead, the collision prevention device and method using a dual processor and a stable distance between the vehicle to alert the risk of collision when the distance between vehicles is reduced within the expected distance of collision In the related art, the conventional vehicle collision avoidance device uses a single processor to restrict the loop time of the software, and the software often has to deal with a complicated flow chart itself, so that it is possible to add a function later or combine it with another device. Big constraints, as well as impossible cases occur Had a problem.

본 발명은 이와같은 종래의 문제점을 감안하여, 레이저 펄스를 일정 주기로 전방으로 발사 및 수신하는 장치를 사용하여 이 레이저 펄스의 진행 반사 시간을 측정 함으로써 차간 거리를 알아낸 후, 이 거리 데이타와 자차의 속도를 이용하여 계산된 안전 차간 거리를 비교 함으로써, 차간 거리가 안전 차간 거리보다 짧아서 발생하는 충돌 위험을 감지하여 경보하도록 한 것이다.In view of such a conventional problem, the present invention finds the distance between vehicles by measuring the traveling reflection time of the laser pulse using a device that emits and receives the laser pulse forward at a predetermined period, and then, By comparing the distance between safety vehicles calculated using the speed, the vehicle is detected and alerted to the danger of collision caused by the distance between vehicles.

Description

Vehicle anti-collision device using dual processor and stability distance between cars and method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 차량의 충돌 방지장치의 블록 구성도.1 is a block diagram of an apparatus for preventing a collision of a vehicle according to the present invention.

제2도의 (a)-(b)는 제1도의 레이저 송·수신부의 레이저 펄스신호 타이밍도.2A to 2B are laser pulse signal timing diagrams of the laser transmitter and receiver shown in FIG.

제3도는 제1도의 제1처리부의 동작 흐름도.3 is an operation flowchart of the first processing unit of FIG.

제4도는 제1도의 제2처리부의 동작 흐름도.4 is an operation flowchart of the second processing unit of FIG.

Claims

A laser trigger unit 11 for generating a laser pulse trigger signal, a laser transmitter 12 for firing a laser pulse generated by the trigger signal of the laser trigger unit 11, and a laser beam triggered by the laser transmitter 12 When the laser pulse hits the vehicle and is reflected, the laser receiver 13 receives the laser pulse and the laser transmitter 12 starts counting when the laser pulse is fired and stops the count when the laser pulse is reflected in the laser receiver 13. A first processing unit (10) comprising a counter unit (14) and a distance information transmitting unit (15) for converting time data counted by the counter unit (14) into distance data and transmitting actual inter-vehicle distance data; A distance information receiver 21 for receiving the inter-vehicle distance data transmitted from the distance information transmitter 15 of the first processor 10, a speed sensor unit 22 for detecting the current vehicle speed through a speed sensor; The safety vehicle distance is calculated according to the speed of the vehicle detected by the speed sensor unit 22, and the calculated safety vehicle distance is compared with the actual vehicle distance received by the distance information receiving unit 21 to determine whether there is a risk of collision. The second processing unit 20 is composed of a data processing unit 23 for controlling to perform an alarm operation according to the control unit, and a brake control unit 24 for controlling the brake device to reduce the speed of the vehicle when an alarm occurs from the data processing unit 23. Anti-collision device of the vehicle, characterized in that consisting of.

First step of initializing each part if there is no abnormality by checking whether each part is normally operated to prevent collision of the vehicle, and after performing the initialization of the first step, firing laser pulse according to the laser pulse trigger signal and simultaneously The second step of counting the; and the third step of stopping the count when the reflection of the laser pulses fired in the second step; and converts the time data counted from the second step to the third step into distance data A fourth step of transmitting the inter-vehicle distance data to the second processing unit 20, a fifth step of detecting the speed of the vehicle and calculating a safe inter-vehicle distance according to the vehicle speed, and the actual inter-vehicle distance transmitted in the fourth step and the A sixth step of determining whether there is a risk of collision of the vehicle by comparing the safety inter-vehicle distances calculated in the fifth step; Does not perform the alarm operation, if the actual distance is within the safety distance, it is determined that there is a risk of collision, generates an alarm sound, displays the alarm state and reduces the speed of the vehicle by driving the brake system. Vehicle collision prevention method comprising the seventh step of performing the alarm operation.

※ Note: The disclosure is based on the initial application.