CN101850770A

CN101850770A - Method for adapting to different pavements and vehicle weights with safe distance of automatic motor vehicle bumper

Info

Publication number: CN101850770A
Application number: CN200910011081A
Authority: CN
Inventors: 陈耕田
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-06
Filing date: 2009-04-06
Publication date: 2010-10-06

Abstract

The invention provides a method for adapting to different pavements and vehicle weights with a safe distance of an automatic motor vehicle bumper, which is a core technology for randomly setting a safe distance for an automatic anti-collision vehicle and an intelligent drive vehicle in the presence of different conditions. The invention is characterized in that a device for the method comprises sensors H1 and H2, a voltage division circuit, a comparator IC (Integrated Circuit) and a voltage regulation circuit potentiometer.

Description

The automatic bumper for motor vehicle safety distance adapts to the method for different road surfaces, car weight

Technical field: the present invention relates to the method that a kind of automatic bumper for motor vehicle and intelligent driving automobile safety distance adapt to different road surfaces, different car weights, especially a kind of and condition of road surface and the synchronous immediately method of car weight.

Background technology: existing automobile automatic bumper and intelligent driving automobile, safety distance in the setting, all take the mode of fixed range, many weeks, under the identical situation of speed, condition of road surface difference, car weight difference, the distance that glancing impact slides also differ widely so the safety distance of needs also different.If do not consider these factors, with a kind of distance as safety distance, and on this basis, carry out early warning, slow down, or even brake, adverse consequences will be caused,, oil plant and waste of time must be caused if the safety distance setting is very big, if distance setting is very near, then be easy to take place traffic accident.If adapt to normal road surface, just can not adapt to wet and slippery or ice and snow road.

Summary of the invention: in order to address the above problem, the present invention discloses a kind of setting safety distance and adapts to different road surfaces, the method for different car weights.This method can make safety distance adapt to different condition of road surface and different car weights.Realize that the core technology route that above-mentioned purpose is taked is: with bleeder circuit safety distance is decomposed into early warning, slows down, the three kinds of states that brake, and with potential device the VREF (Voltage Reference) of the speed of a motor vehicle is adjusted, make the different condition of road surface of safety distance correspondence.Again target range voltage is advanced to set adjustment with potential device, to adapt to different car weights, it is characterized in that: by speed of a motor vehicle voltage sensor H1, apart from voltage sensor H2, speed of a motor vehicle voltage potentiometer PR1, apart from voltage potentiometer PR2, bleeder circuit R1, R2, R3, multivoltage comparator IC forms.Further specify below in conjunction with accompanying drawing.

Accompanying drawing is an electrical schematic diagram.

H1 described in the figure is a car speed sensor, and the speed of a motor vehicle is become correspondent voltage.H2 is the target range sensor, and distance is become the correspondent voltage signal.The speed of a motor vehicle voltage of H1 output is earlier through potential device RP1, and again through R1, R2 after the R3 dividing potential drop, divides three groups of ends to be compared that are input to multivoltage comparator IC1 respectively.IC2 divides three groups of relatively ends that are input to comparator apart from voltage again through RP2, and comparative result is respectively from a, b, c three tunnel outputs.Be respectively early warning, slow down, the instruction output of brake.Adjusting each point voltage of RPI bleeder circuit will change, and the voltage that adjustment RP2 relatively holds also can change.

Embodiment: in order to realize above-mentioned functions and accurately approaching as far as possible, at first will be under identical speed, the distance that slides during the different road surface brake is made actual test, then the mode of cooresponding condition of road surface with literal or icon is labeled on the corresponding calibrated disc of potential device, during use, as long as the pointer of potential device is transferred to cooresponding condition of road surface according to condition of road surface.RP2 adjusts to set different car weights, and its mark also must be through the coasting distance test of different car weights.According to different car weights, pointer is transferred to cooresponding mark gets final product during use.By said method, can satisfy substantially different road surface and different car weight safety distances the setting needs.That divides is thin more just accurate more.According to drawing, and specification sheets, and through accurately test, just can implement.

Claims

1. the invention is characterized in: by sensor H1, H2, potential device RP1, RP2, bleeder circuit R1, R2, R3, comparator IC and corresponding auxiliary element and power supply are formed.

2. the H1 described in the letter of authorization 1 is characterised in that: be sensor or the circuit that the speed of a motor vehicle is converted to cooresponding voltage.

3. the H2 described in the letter of authorization 1 is characterised in that: be sensor or the circuit that distance is converted to corresponding voltage.

4. the RP1 described in the letter of authorization 1, RP2 is characterised in that: be the knob potential device that has calibrated disc.

5. the R1 described in the letter of authorization 1, R2, R3 are bleeder circuits, the voltage of getting is respectively the safety distance voltage of early warning, deceleration, brake from high to low.

6. the IC described in the letter of authorization 1 is the multivoltage comparator.

7. letter of authorization 1 described feature also exists: device, the interconnected relationship of circuit is, the velocity voltage of H1 conversion is through RP1 dividing potential drop again, and be input to the end to be compared of three groups of comparators respectively, and being input to the relatively end of three groups of comparators apart from voltage again through RP2 after the H2 conversion, three groups of outputs of comparator are a as a result, b, c is respectively early warning, slows down the brake instruction.

8. the potential device RP1 described in the letter of authorization 1, the feature of RP2 also is: be labeled in the safety distance voltage of different road surface on the cooresponding scale of RP1 calibrated disc, different car weight safety voltages is labeled on the cooresponding scale of RP2 calibrated disc, during use, according to different road surface and car weight, as long as the pointer of potential device is adjusted to cooresponding mark, must be before the mark through actual safety slip row distance is tested, it is thin more good more to get.

9. auxiliary element described in the letter of authorization 1 and power supply are characterised in that: be the auxiliary element that can make the circuit normal operation, power supply is taken from the car, and through handling satisfactory power supply.