CN1172039A

CN1172039A - Pre-alarming system for preventing car from close trailing collision

Info

Publication number: CN1172039A
Application number: CN 96109026
Authority: CN
Inventors: 张彦
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-29
Filing date: 1996-07-29
Publication date: 1998-02-04

Abstract

The presnet invention provides an early warning system for preventing following chase collision of vehicles. It is characterized by adding yellow tail lamps on the tail position of vehicle, and when the driver's foot moves onto brake pedal, the yellow tail lamps are lighted firstly so as to call the attention of after-following vehicle driver to that the front running vehicle will brake, so that it can effectively prevent following chase collision accident from occuring.

Description

Pre-alarming system for preventing car from close trailing collision

This system belongs to the safety traffic field.At present: yet there are no this principle, the method used both at home and abroad, solve the forewarn system of preventing car from close trailing collision.

World today's auto-industry constantly improve to some extent along with human development of science and technology and innovate.But the present situation that solves the traffic accident of rear-end collision, collision does not really have much changes.Its reason:

1, the speed of a motor vehicle of modern automobile is along with the raising of automotive technology performance is more and more faster, but shortens the hope of braking distance, really since objectively various reasons be difficult to solve.(friction coefficient of track, the design of brake system, new and old, the material of tire, decorative pattern, the quality size of automobile, body construction design or the like.)

2, owing to the driver always wishes to pass through fast to fight for road, cause the time of disposition shorter and shorter.(provide according to data: the driver sees that taking the average reaction time of emergency braking behind the red light is 0.5 second, and automobile is about 1 second of the averaging time of braking effectively, and the time of emergency braking should be greater than 1.5 seconds in a word.)

For these at the crossing, road is inaccurate because of judging, and all traffic accidents that brake suddenly causes the back car to have little time to handle have not only hindered traffic route, have also caused serious economy loss, the more important thing is the harm personal safety.How to solve comparatively ideally above-mentioned worldwide, recurrent problem in the big and medium-sized cities? pre-alarming system for preventing car from close trailing collision will have certain breakthrough on addressing the above problem.

1, brake is to light stoplight after pin is depressed brake pedal in the past, car after the early warning.And pre-alarming system for preventing car from close trailing collision is when pin moves on brake pedal, and just playing glassy yellow taillight prompting back car front truck has the brake idea.No matter step on the pedal that do not touch on the brake, have only after pin is moved brake pedal away, just to cease the yellow taillight that goes out all with holding point glassy yellow taillight and side lamp.(for example: when automobile sailed footway or crossing fast into, the front truck driver had carried out emergency brake and has prepared; But back car driver does not often know that the front truck driver has prepared brake; In case the unexpected emergency braking of front truck driver--brake, back car driver will be very passive.After loading onto pre-alarming system for preventing car from close trailing collision, back car driver can shift to an earlier date several seconds preparation strained handling.)

2, because different (design of brake system) of vehicle car type, the performance of new car used car different (tire, brake disc hub) makes that the amount of braking brake is different, thereby it is also different to light time of stoplight.Quantitative with effective braking 100%.The driver does not in case of emergency generally adopt 100% braking, and pedal (the effective braking amount with 10%～70%) is felt to reach rational brake but touch on the brake slowly pedal or point touch on the brake.Both under the preceding topic that guarantees safety, must exempt from unexpected brake, so the brake pedal assorted petty position starting stoplight of stepping on, then can not unify, thereby make back car driver difficult judgment because of vehicle, car type, new car, used car.(for example: the A car has only effective braking amount of 10% just to light stoplight, and it has reached the purpose of the back car that gives warning in advance, and back car driver can be according to the speed of a motor vehicle, spacing, gently step on braking; Effective braking amount of B car existing 50% is just lighted stoplight, and its hysteresis prompting makes back car driver with must be with greater than effective braking amount emergency brake of 50% under the condition that car is tight, the speed of a motor vehicle is fast.Present brake amount depends on the distance that the people shortens obstacle (spacing) in unit time fully and judges, so how effective braking amount of front truck judges in advance that for indication back car driver its effective braking amount from car seems more and more necessary.And pre-alarming system for preventing car from close trailing collision is that the equipment that improves above-mentioned situation can be provided, and it was from lighted stoplight qualitatively to the quantitative acceleration g that indicates the front truck brake control power (effectively braking amount) in the past.(for example: automobile travels with 60 kilometers speed per hour, when the front truck driver brakes with effective braking amount of 10%, no matter whether stoplight is lighted, pre-alarming system for preventing car from close trailing collision is all lighted substantial synchronization the orange warning light of one-level, informs that driver's front truck of back car has-the brake acceleration/accel of 1g; If the front truck driver is during with 50% effective braking amount brake, pre-alarming system for preventing car from close trailing collision is then lighted the orange warning light of level V (or 1～5 grade), informs that afterwards driver's front truck of car has-brake acceleration/accel about 5g; As front truck driver during with 100% effective braking amount emergency brake, pre-alarming system for preventing car from close trailing collision is then lighted five-star red warning light, informs that the driver of back car must take the emergency brake braking.This method has improved the effect that back car driver scientifically uses braking strength on amount, for striving for safety shut-down opportunity, must exempting from rear-end impact and created condition.) content and implementation method.

1, the A portion of system:

Solve the early warning indication for the treatment of drag with the human body principle of induction.See functional block diagram (Fig. 1)

2, the B portion of system:

Scheme 1: should ring the flux change value that magnetic repulsion force produces with measuring dynamic force of inertia, demarcate the size of the negative acceleration g of brake.It is braking strength.Functional block diagram: see figure (Fig. 2)

Scheme 2: do the dynamic displacement of inertial mass under the usefulness, the size of demarcating brake negative acceleration g in the magnetic repulsion force field with measuring dynamic force of inertia.It is braking strength.Functional block diagram: see figure (Fig. 3)

Scheme 3: do the changing value that the dynamic displacement of being with the magnetic inertia object under the usefulness produces the shading amount with measuring, demarcate the size of brake negative acceleration g at field of magnetic forece.It is braking strength.Functional block diagram: see figure (Fig. 4) computing formula:

F (force of inertia)=M (quality) g (acceleration/accel) ... (2) when: F (magnetic repulsion)=F (force of inertia) then has:

If exhale the slightly magnetic moment influence of magnetic measurement element, then induced field intensity (B) should equal magnetic-field intensity (H).

Promptly have: B=H

When: H ₁=H ₂The time, B under the same conditions ₁=B ₂From formula (3) and (4): Tabulate by formula (5):

R
R		g

Horizontal gravity damping structure: see figure (Fig. 5) supplemental instruction:

1, B portion of this system can increase (+g) the indication (point gives a green light) of automobile start brief acceleration;

2, B portion of this system can be used for space shuttle landing automatic adjustment system;

3, B portion of this system can be used for the power control of space shuttle, satellite lift-off and reclaims the automatic reduction of speed control of landing.In July, 1996

Claims

1, to the proposition of pre-alarming system for preventing car from close trailing collision and the enforcement and use protection of system;

2, the magnetic flux that is produced with the dynamic magnet homopolar-repulsion is supported the principle of cutting, measure the method protection of the magnetic field numerical value that changes by the magnetic detection element;

3, make of the dynamic displacement of measuring inertial mass down being used in the magnetic repulsion force field, demarcate method and the principle protection of brake negative acceleration g;

4, scheme and the demonstration protection to being proposed;

5, the project organization of horizontal gravity damping is protected.