CN2218120Y - Multifunctional safeguard for vehicle - Google Patents

Multifunctional safeguard for vehicle Download PDF

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Publication number
CN2218120Y
CN2218120Y CN 93246785 CN93246785U CN2218120Y CN 2218120 Y CN2218120 Y CN 2218120Y CN 93246785 CN93246785 CN 93246785 CN 93246785 U CN93246785 U CN 93246785U CN 2218120 Y CN2218120 Y CN 2218120Y
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circuit
signal
mouth
output
road
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查世林
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Abstract

The utility model relates to a multifunctional safeguard for a vehicle, which can avoid and reduce traffic accidents. The utility model is composed of a circuit part and a mechanical part. The key of the circuit part is an anti-interference processing circuit which is arranged at the output end of an integrator circuit and is provided with an electronic switch K. When interference signals generate and pass through the circuit, the electronic switch K can be automatically turned on to cause the interference signals to go into the ground in time. When an infrared probe installed at the front of the vehicle detects an obstacle in front of the vehicle, the detecting signals of the infrared probe pass through an amplifying circuit, a separating circuit, an anti-interference dealing circuit, a combined circuit, etc. Finally, the driving mechanical part comprises a braking part and a baffle part which is arranged below a bumper and is usually folded. When the vehicle is automatically braked, simultaneously, the baffle can be automatically opened, thus preventing the obstacle from entering into the lower side of the vehicle.

Description

Multi-purpose vehicle(MPV) self-control safety device
The utility model relates to a kind of automobile automatic guidance safety device, particularly a kind ofly not only can report to the police, but also have self-actuating brake and put the multi-purpose vehicle(MPV) self-control safety device of plate washer function.
At present, though Eltec has been seen through each technical field, the application on automobile is quite a few, and what also mainly lean on aspect automobile brake is artificial.Under steam, the driver must watch out for constantly, spiritual high concentration, and even so, but traffic accident still takes place repeatedly.In order to reduce the generation of traffic accident, provide a kind of " meeting, the signal emission device of overtaking other vehicles " Chinese patent CN86205286 number.At meeting with when overtaking other vehicles, it can send sound and light signal and note to remind the driver.A kind of " automobile thrust into safety buffer device " is provided again for Chinese patent CN87204965 number, this device is exactly, when finding the place ahead, the driver is in an emergency, when carrying out sudden stop by the light of nature, it can promptly eject an object in the front lower place of car, the people who is hit is shifted onto on one side, to exempt from the hardship that car rolls.Though these to reducing the generation of traffic accident, can play a role in theory, its weak point also is, accomplish safety traffic to the people particularly the driver also have very big dependence.That is to say that no matter be the preceding a kind of or a kind of device in back, if there is not driver's participation, their effect all equals zero.Moreover traffic accident often all is to occur in the moment of being taken by surprise, and adds that driver's speed of response has certain limit again, so, have only implementation brake automation to be only the unique channel of avoiding and reducing the traffic accident generation.
The purpose of this utility model will overcome weak point of the prior art exactly, and for automobile provides a kind of like this device: when ditch occurring in the dangerous area, the place ahead of the automobile in travelling, it just can carry out self-actuating brake; When the dead ahead occurs obstacle also gradually to vehicle proximity, it can send sound, the light of foresight earlier and report to the police, to remind the driver to take emergency measures, if at this moment the driver has little time to react and also has no relations, Deng near within the self-stopping scope of this device the time, it can not only carry out self-actuating brake, can promptly strut a collapsible plate washer between near bumper/spoiler and ground again simultaneously, enters under the car in order to prevent obstacle.
The purpose of this utility model is achieved in that the probe of at first respectively adorning a detection usefulness at the left, center, right of Federal bumper end, it is right to be provided with the transmitting-receiving of forming with infrared reception, power valve in the probe, in each probe, all there is a upper and lower transmitting-receiving right, wherein goes up left, center, right and the transmitting-receiving of following left, center, right using A respectively 1, A 2, A 3And B 1, B 2, B 3Expression also respectively has the transmitting-receiving of a sensing ground-surface right simultaneously in left and right probe, represents with M, N respectively.These receive and dispatch right signal through receiving, amplify, separating ... Deng being divided into four the tunnel at last (A 1, A 2, A 3And B 1, B 2, B 3Receive and dispatch right signal and be called a road and b road, the right signal of M, N transmitting-receiving is called m road and n road) flow to combinational circuit, go to obtain warning respectively, brake and put the baffle plate signal with several specific combinatorial inputs.
The utility model mainly is made up of emission, reception, amplification, separation, anti-interference process, combinational circuit, booster driving circuit, sound light alarming circuit, command range auto-adjusting circuit, power supply, detection and these 12 parts of machinery, below just they are illustrated one by one.
One, emission:
The oscillation source of this emission is a multi-vibrator of forming with Schmidt trigger, resistance and electric capacity.The signal that it produces is through two control AND gate D 1, D 2Be divided into two-way respectively by A 1, A 2, A 3, power valve and B among the M 1, B 2, B 3, the power valve among the N launches.D 1Another input end and a Schmidt trigger D 3Mouth link to each other.D 3Formed a multi-vibrator that reciprocal of duty cycle is very big with a diode, two resistance.D 3Mouth is simultaneously also by a diode and another Schmidt trigger D 4Input end link to each other.D 4Input end is also and by the delay circuit of forming with resistance, electric capacity.D 4Output signal give the differential circuit of forming by electric capacity, resistance.The mouth of differential circuit and D 2Another input end link to each other.At ordinary times, D 3With differential circuit output active potential, D 1, D 2Be blocked.Have only and work as by D 3Export high potential D on form such special oscillator 1When opening, the oscillator signal that oscillation source produces could pass through D 1Remove to control A 1, A 2, A 3, the power valve among the M launches, and works as D 5The high potential of output disappears, and emission also just stops.Just at D just now 3Output is during high potential, just by diode D 4Input end throw high potential, present D 3Though high potential disappears, because the storage effect of parallel capacitance makes D 4Input end still keep high potential.As time goes on, electric capacity will make D by parallel resistor discharge with it 4The input end current potential descends.When dropping to D 4Following valve put voltage V T-time, D 4The mouth saltus step becomes high potential, this high potential after the differential circuit differential becomes the forward pointed pulse again D 2Open, make B again 1, B 2, B 3, power valve is launched among the N.When the differential circuit output voltage drops to D 2Threshold voltage the time, B 1, B 2, B 3, the power valve among the N also stops emission, until D 3Export high potential again, just make this circuit repeat said process again.
Two, receive
The infrared beam that power valve sends, when running into obstacle, its reflected light will be received by this adoptor of receiving and dispatching centering.In the probe of left, center, right, all be earlier just being transported in the amplifier that is provided with in this probe after the adoptor parallel connection of upper and lower transmitting-receiving centering.These three amplifiers are used FD respectively 1, FD 2, FD 3Expression.A 1B 1, A 2B 2, A 3B 3Received signal respectively through FD 1, FD 2, FD 3After the amplification again and to delivering to next stage together---carry out the secondary amplification in the selective frequency amplifier circuit.In left and right probe, the received signal of M, N is wanted to deliver to respectively earlier in another amplifier that is provided with in this probe and is amplified.These two amplifiers are used FD respectively 4, FD 5Expression.Through FD 4, FD 5The signal that amplifies, exports is also wanted elder generation and be carried out the secondary amplification in another frequency selecting amplifier to delivering to together.FD 1---FD 5Be identical five amplifiers on structure and performance.Again their structure and principle of work are made an explanation below.They are made up of amplifying triode, feedback aerotron, sample resistance, shunt capacitance, biasing resistor and diode.The negative pole of diode links to each other with the amplifying triode base stage, and amplifying triode emitter string has feedback aerotron emitter-base diode, and emitter-base diode also has sample resistance and shunt capacitance.Biasing resistor provides bias current by diode to amplifying triode, when sample resistance is flow through in the emitter-base bandgap grading bias current, will produce a loss in voltage that is directly proportional with bias current at its two ends.When current receive signal and bias current superposition, it can make the voltage on the sample resistance increase again, when increasing to can break feedback aerotron emitter-base diode the time, just forms the base stage bias current.The feedback transistor collector links to each other with amplifier in.Like this, the collecting electrode of feedback aerotron just forms shunting to received signal, thereby has pind down the increase of amplifying triode emitter-base bandgap grading bias current.As seen, it is the current parallel negative feedback amplifier circuit of a feedback factor very big (approaching 100%).Because feedback factor is very big, so it is to parasitic light signal such as sunlight, light ... do not have any amplifying power Deng just, so just avoided the influence of ambient light pair amplifier.Simultaneously because the short circuit of shunt capacitance (to feedback aerotron emitter-base diode) effect, so make not only this amplifier to AC signal but also have higher magnification factor.Via feedback aerotron emitter-base diode, export by the circuit parallel that shunt capacitance, sample resistance are formed by the amplifying triode emitter for signal after the amplification, and its alternating component mainly is to export through shunt capacitance.
Three, amplify
This partial circuit is mainly by the preposition amplification of the binary channel of forming with integrated package and peripheral cell thereof.For making each passage can both obtain higher gain, just allow the mouth of the preposition amplification of each passage, link to each other with two input ends respectively by the two-stage broadband three-stage amplifier that frequency-selecting is formed with one-level.Signal is by the frequency-selective amplifying stage output of passage separately.The input end of two passages all is provided with the LC frequency-selective circuit.The input of two passages, output frequency-selective circuit all are tuned on the oscillation frequency of transmission circuit oscillation source.
These two passages, one is to serve as FD 1, FD 2, FD 3The A1A of output 2A 3, B 1B 2B 3The amplification task of received signal, we just are referred to as the ab passage, and one is to serve as FD 4, FD 5The M of output, the amplification task of N received signal, we just are referred to as the mn passage this passage.
Four, separate
Can know A with the fwd introduction 1A 2A 3, B 1B 2B 3Received signal got into same amplification channel at last---ab passage, the received signal of M, N have also been got into same amplification channel---mn passage at last.And in fact this device needs four road signals.In order to satisfy this demand, this just must allow the output signal of these two passages, the separation that all once is divided into two again.The last left, center, right and the following left, center, right right received signal of transmitting-receiving of the ab passage being amplified output are separated into a road and b road, and the right received signal of a left side (M) right (N) transmitting-receiving of the mn passage being amplified output is separated into m road and n road.
Before saying separation, draw two mouths from transmission circuit earlier.One is to represent A 1A 2A 3The M emission, use Y AExpression, one is to represent B 1B 2B 3The N transmitting-receiving is used Y to what launch BExpression.So-called " representative emission " refers to, when the transmitting-receiving of representative when launching, this mouth just can be exported high potential.
The separation of mn passage:, directly give two gating AND gate D from the signal of mn amplification channel output 5, D 6Input end.D 5The other end be connected to Y A, D 6The other end be connected to Y B(off period of emission) Y at ordinary times AY BBe active potential, D 5D 6Be blocked, have only when launch on certain road, just the gating AND gate of this road received signal of hope being passed through with the signal of representing this road emission is opened.For example: when M launches, Y AThe high potential of output is D 5Open, make the received signal of M can only be from D 5Mouth output.When N launches, Y BThe high potential of output is D 6Open, make the received signal of N can only be from D 6Output.Thereby realized the separation of mn channel signal.The separation of ab passage: directly give two gating AND gate D from the signal of ab passage output 7, D 8, D 7Another input end through inverter D 9With Y BLink to each other D 8An input end through inverter D 10With Y ALink to each other.Y at ordinary times AY BThe output active potential is through D 10D 9D 8D 7Open.Have only when the emission of certain road, just with the signal of represent this road to launch a blockade of not wishing that this road received signal is passed through.For example: when receive and dispatch (A on a road 1A 2A 3) when launching, Y AThrough D 10D 8Block, cause a road received signal can only be from D 7Output is when receive and dispatch (B on the b road 1B 2B 3) when launching, Y BPass through D again 9D 7Block, cause the b road received signal can only be from D 8Output, from and finished the separation of ab channel signal.
Five, anti-interference process circuit
From D 5D 6The m and the n road signal impulse that separate output all will obtain level and smooth back by them via rectification, the filter circuit that diode, electric capacity are formed and just flow to next stage---combinational circuit again.The mouth of this two paths of signals is used Y respectively 1, Y 2Expression.
From D 7D 8Separate a road and the b road impulse singla of output,, also require this treatment circuit to have the ability of dealing carefully with simultaneously the dried excellent signal of coming in except doing the above-mentioned processing to them.
The structure of this partial circuit and principle of work are such: allow and separate the impulse singla of exporting, send in the integrating circuit through a diode earlier, simultaneously with integrating capacitor again and a discharge electronic switch K arranged, the Y that transmits on the connecting and disconnecting of K and this road, receiving output signal X has following logical relation:
K＝X Y (1)
This paper is positive logic, and " 1 " is represented height, has, led to ...With a road integrating capacitor C ADischarge electronic switch K in parallel aSwitching and the Y that transmits on a road a(take from Y A) reception output signal X a(take from D 7Mouth) logical relation is:
K a＝X aY a (2)
With the corresponding decision circuit of (2) formula be by switching diode and NOT-AND gate D 11Realize.D 11An input end be connected to D 7Mouth also can be found out from (2) formula, realize that circuit correspondingly also needs an inverter to make inverter gate.For the purpose of saving, here D 11Another input end be connected to D 10Mouth, allow D 10Being the inverter gate of separation circuit, is again electronic switch K aInverter gate.Signal is exported from the integrating circuit mouth, again the RC time constant of integrating circuit is regulated, make it to accomplish, be added on the time of the received signal of integrating circuit by diode, only during the summation of the launch time of launching the cycle greater than transmitting five, just can make the output voltage of integrating circuit rise to the changing voltage of combinational circuit, just can become effective input of combinational circuit.Just look at below this circuit is how to treat transmitting and interfering signal of reflection: see reflected signal earlier, this signal is through receiving, amplify, separating at last from D 7Mouth output, the characteristics of this signal are that its appearance is always caught up with during the right emission of this road transmitting-receiving, at this moment Y a=1 is not difficult to find out K at this moment from (2) formula and circuit analysis aAlways be in off-state.This signal is added on integrating circuit through diode, makes each the lifting of voltage on the integrating capacitor.Behind four continuous impulses, as integrating capacitor C AOn voltage rise to the logical gate D that forms combinational circuit (next stage circuit) 15Threshold voltage the time, this signal has just become effective input of next stage circuit.If D 7This road of right and wrong of output transmits, if it can be the same with transmitting of reflection normally, accomplishes: " four times and all appearance when transmission circuit is launched at every turn in succession ", it can make C equally AOn voltage be raised to D 15Threshold voltage and become effective input of combinational circuit.Can in fact it not accomplish.This be because, its appearance is a randomness, the getting in touch on not free with transmission circuit, it might occur during launching, also might be in the off period appearance of emission.Occur during launching, it can pass through diode equally, integrating resistor is given integrating capacitor C ACharging also raises the voltage at its two ends.What can occur at the off period of emission is just different.At this moment Y a=0, D 10Just export high potential, D 11An input end throw high potential.If D at this moment 7Export received signal X again a, D 11Another input end also throw high potential, D so 11Mouth will export active potential, make switching diode place positively biased and conducting, K aBe in on-state, remove a C AOn filled just now electric charge bleed off.That is to say that appear at the interfering signal during the emission, it can give C equally ACharging, and appear at the interfering signal of launching off period, then become to open (connection) K again a, to C AThe discharge signal that discharges, thus make and to appear at during the emission and be stored in C again AIn interfering signal, the interfering signal that is appeared at the emission off period subsequently again bleeds off, because interfering signal can only make C ACharge continually and discharge, so it just can not make C AOn voltage rise to D 15Threshold voltage and become effective input of combinational circuit.Thereby avoided interference to this device.The antijamming blackout of Zu Chenging also exists such problem like this, and exactly: when obstacle is left away, reflected signal disappears, but C AOn electric charge but continue to preserve the illusion that will cause a kind of obstacle also not leave away to combinational circuit like this because of releasing nowhere.In order to address this problem, specially again at C AOther delayed discharge switch in parallel.Require: work as D 7When received signal output is arranged, its energy automatic cutout, after blackout a period of time (being greater than the pitch time of twice emitting), it can be connected again automatically, allows remaining electric charge bleed off by it.This switch is by diode, resistance, electric capacity, buffered gate D 13Form with switching diode.The positive pole of switching diode is connected to C A, negative pole meets D 13Mouth, D 13Input end also has resistance and electric capacity, and diode cathode is connected to D 7Mouth, negative pole is connected to D 13Input end.Work as D 7During the output received signal, it just makes D by diode 13Input end throw high potential, D 13The high potential of output ends switching diode.The switch of forming is just located off-state.D 7After output signal disappears, because the storage effect of input end parallel capacitance causes switch still to keep off-state.As time goes on, electric capacity will be by parallel resistor discharge with it, and loss in voltage is to D on electric capacity 13Threshold voltage the time, it just exports active potential, the switch place on-state of composition just can be C by it AIn remaining electric charge bleed off.With b road integrating capacitor C BDischarge electronic switch K in parallel bBreak-make and the b road Y that transmits b(take from Y B), receive output signal X b(take from D 8Mouth) logical relation is:
K b＝X bY b (3)
Corresponding decision circuit is by NOT-AND gate D 12And switching diode is formed.D 12Two input ends, be connected to D respectively 8And D 9Mouth.The delayed discharge switch is by buffered gate D 14, switching diode ... Deng composition.Their service condition and a road are identical, just no longer repeat here.A road signal output part (is taken from C A), use Y 3Expression, b road signal output part (is taken from C B) use Y 4Expression.
Six, combinational circuit
This one-level circuit mainly is exactly one four end input (Y 1, Y 2, Y 3, Y 4), two ends output (Y 5, Y 6) decision circuit.The logical relation of two mouths and input end is respectively: Y 5 = Y 1 Y 2 ‾ + Y 3 Y 4
Y 6＝Y 3Y 4 (5)
Corresponding decision circuit is by AND gate D 15, NOT-AND gate D 16With OR-gate D 17Form.Y 5What export is brake signal, Y 6What export is to put the baffle plate signal.Y 5Y 6Be respectively from D 17And D 15Mouth draw.The input of combinational circuit under normal circumstances is Y 1=Y 2=1, Y 3=Y 4=0, m road and n road signal output part Y 1Y 2Be " 1 " all, illustrate that M, N transmitting-receiving is to constantly receiving the ground-surface reflected signal.A road and b road signal output part are " 0 " all, illustrate that the transmitting-receiving of a road is to (A 1A 2A 3) and b road transmitting-receiving to (B 1B 2B 3) do not receive the reflected signal of obstacle.So at this moment neither need Y 5The output brake signal does not need Y yet 6The plate washer signal is put in output.
In combinatorial input, work as Y 1, Y 2" 0 " is arranged when occurring, just illustrate that zanjon has appearred in the place ahead, at this moment Y 5Will export brake signal.Work as Y 3Y 4In the time of being " 1 " simultaneously, just illustrate that obstacle has appearred in the place ahead.At this moment Y not only 5Output brake signal, Y simultaneously 6Also plate retaining signal is put in output.
Because A 1A 2A 3And B 1B 2B 3Received signal be just respectively by Y behind in parallel the amplification 3Y 4Output, thus they logically be " with " relation, thereby just have
A 1＋A 2＋A 3＝Y 3 (6)
B 1＋B 2＋B 3＝Y 4 (7)
Simultaneously because Y 1Y 2What export is the right received signal of M, N transmitting-receiving, thereby has again
M＝Y 1 (8)
N＝Y 2 (9)
Just can obtain receiving and dispatching right input and Y to their substitutions (4) (5) formula respectively 5And Y 6Logical relation, they are respectively
Y 5＝ MN＋(A 1＋A 2＋A 3)(B 1＋B 2＋B 3) (10)
Y 6＝(A 1＋A 2＋A 3)(B 1＋B 2＋B 3) (11)
Transmitting-receiving is to representing this transmitting-receiving to having received the reflected signal of obstacle for " 1 ", as A 1The upper left transmitting-receiving of=1 expression is to having received the reflected signal of obstacle, and M=1 represents that this transmitting-receiving is to having received ground-surface reflected signal etc.
Seven, booster driving circuit
Y 5The brake signal of output is also wanted earlier through an AND gate D 18, and then after the electric capacity differential becomes pointed pulse, remove to trigger silicon control VS 1, VS 1Conducting rear drive electromagnet F 1, F 1Suction can force the brake that is in preset condition partly to discharge, to carry out self-actuating brake.Y 6Output put the baffle plate signal, after the electric capacity differential becomes pointed pulse, remove to trigger silicon control VS 2, VS 2Conducting rear drive electromagnet F 2, F 2Suction force the baffle plate that is in folded state promptly to strut again.For making F 1, F 2When suction is moving, have enough dynamics and speed, give F here 1, F 2What adopt is electric capacity, high voltage supply mode.Be exactly the inductance of three-point oscillating circuit of elder generation, direct current is transformed into interchange, boost and rectifies through transformer secondary output again, charge to reservoir capacitance at last by forming by aerotron oscillation transformer, biasing resistor and coupling capacitance.After silicon control is triggered conducting, the reservoir capacitance that is filled electric charge will discharge through magnet coil and silicon control, because the electric capacity internal resistance is very little,, cause brake to carry out rapidly, reliably so it provides a very big instantaneous power can for load (electromagnet).In fact VS 1, VS 2Trigger end still by two gang switch K 1, K 2With Y 5Y 6Signal output part links to each other.Their effect is: where necessary, when needing to the artificial shutdown of this device implementation, just can be by changing them VS 1, VS 2The triggering source cut off.
Eight, sound, optical alarm circuit
This partial circuit mainly is made up of two multi-vibrator.An audio frequency oscillator of forming by Schmidt trigger, resistance, electric capacity; A controlled multi-vibrator of forming by Schmidt's NOT-AND gate, resistance, electric capacity.The sound signal that audio frequency oscillator produces is gone out by loudspeaker radiation after multiple unit tube amplifies.The signal that controlled multi-vibrator produces divides two-way, and one the tunnel modulates through the diode pair audio frequency oscillator, and one the tunnel that the illuminating circuit of being made up of aerotron, light-emitting diode is glimmered is luminous.The controlled end of controlled oscillator is exactly another input end of Schmidt's NOT-AND gate.When no control signal is a controlled end when being active potential, controlled oscillator output high potential.It simultaneously makes light-emitting diode luminous continuously, and one side makes audio frequency oscillator output active potential through diode.At this moment multiple unit tube ends, and loudspeaker are also mute.The controlled b road signal output part Y that is terminated at of controlled oscillator 4End, when design, specially allow the right command range of b road transmitting-receiving far away than a road always, like this, when the dead ahead people or obstacle occur and during gradually to vehicle proximity, it or he at first can be reported to the police by the transmitting-receiving of b road makes loudspeaker in this circuit and light-emitting diode alternately send foresight to detecting sound, light.Have only when continue near and again by a road transmitting-receiving (Y at this moment when detecting 3, Y 4All be " 1 "), Y 5Just export brake signal and go to carry out self-actuating brake.
Nine, command range automatically regulating
There is one section dangerous area in the place ahead of automobile under steam, and this section zone changes with vehicle speed, and the speed of a motor vehicle is high more, and this section zone is just big more, otherwise then little.For making this device only to controlling in the hazardous location, the right command range of transmitting-receiving can be done corresponding the variation with the height of the speed of a motor vehicle during this just required to pop one's head in.These several transmitting-receivings are to (A 1A 2A 3, B 1B 2B 3), right structure and the Principles of Regulation of each transmitting-receiving are such; It is made up of a power valve and three adoptors, and adoptor and power valve are isolated mutually and be mutually straight line again on being arranged, and in the front of power valve and adoptor, a collector lens are arranged all.In power valve and its collector lens, be formed centrally an emission axis that extends forward like this.Three adoptors and its collector lens center have formed three reception axis crossing adoptor and meet at the receiver lens center again respectively.They and emission axes intersect, from and formed with transmitting-receiving to becomes respectively closely,, remote three intersection points.Each intersection point is exactly the receiving center of corresponding adoptor, at each above the adoptor, all string has a diode again, so just can accomplish, have only and add anti-partially the time to adoptor by diode, this adoptor just works, otherwise will because of received signal too a little less than, unable break the serial connection diode PN junction and can't send into amplifier and amplify.So just can realize receiving and dispatching adjusting by change giving the anti-inclined to one side state of supply of adoptor to command range.
For example: when allowing transmitting-receiving when doing distance control, it is partially anti-to add just for three adoptors entirely.When allowing transmitting-receiving, just farthest that of corresponding intersection point is responsible for instead the removing partially of adoptor of distant reception to doing middle distance when control.When allowing transmitting-receiving to doing when closely controlling, instead partially also removing just at the adoptor of placed in the middle that of corresponding intersection point being responsible for the middle distance reception.If instead removing partially entirely of three adoptors, because transmitting-receiving centering does not have to send received signal to the adoptor of amplifier, so transmitting-receiving at this moment is to just having lost detectability.
Anti-supply circuit partially: this circuit has three mouths, they be respectively transmitting-receiving near to being responsible for, in, three adoptors of distant reception provide partially anti-, as can be seen, want to allow the right command range of transmitting-receiving change with the speed of a motor vehicle, as long as the output state of three mouths can be changed with the speed of a motor vehicle (when automobile was made high, medium and low speed respectively and travelled, it also can do the variation of three, two, one mouth output high potential respectively) just.
This partial circuit mainly is by car speed sensor G, monostable circuit DW, decimal scale meter effect/distributing box JC (being realized by CD4017) and three buffered gates ... Deng composition.The vehicle speed signal of G output is earlier through a Schmidt trigger D 19Carry out shaping, D 19Mouth divide two-way, respectively to the triggering input end (the DW stable state is that triggering is controlled in high potential, rising) of JC clock input CP end and DW.The mouth of DW is to reset R end of JC.The decoding mouth Q of JC 3Q 6Q 9Through three diodes respectively with three buffered gate D 20D 21D 22Input end link to each other, their input end is all and by the filter circuit of forming with resistance and electric capacity.In motion, the vehicle speed signal of G generation is through D 19Divide two-way after the shaping, the one tunnel removes to trigger DW makes it enter temporary stable state (active potential), and one the tunnel removes to trigger the CP end of JC, makes JC decoding mouth Q 0Q 1Q 2Export high potential successively.In counting/assigning process, in case run into the reset signal (DW is entered the skip signal of stable state by temporary stable state) of DW, it will make former counting sequence upset, again from Q 0Q 1Q 2Counting sequence just restart.Because the time of DW output reset signal is fixed, so the G output signal frequency just speed of a motor vehicle just can determine the decoding mouth can be assigned to the quantity of the end of signal.When the s-f (speed of a motor vehicle) of G progressively increased from low to high, the decoding mouth can be assigned to the quantity of pulse also will be from Q 0, Q 0Q 1, Q 0Q 1Q 2Deng increase successively.When automobile is done when running at high speed Q 3Q 6Q 9The impulse singla that is assigned to will make D 20, D 21, D 22The output high potential.High potential makes the anti-state partially in the full place of three adoptors of transmitting-receiving centering.At this moment transmitting-receiving is to making distance control; When automobile is done when driving at moderate speed, because Q 9Distribution causes D less than impulse singla 22Output active potential and instead the removing partially of adoptor that transmitting-receiving centering is responsible for distant reception.At this moment transmitting-receiving is to doing middle distance control, when automobile is made low speed driving, because Q 6Q 9Distribution causes D less than impulse singla 21Also export active potential and transmitting-receiving centering is responsible for instead partially also removing of adoptor that middle distance receives.At this moment transmitting-receiving is to can only closely controlling; When automobile travels as Ultra-Low Speed, Q 9Q 6Q 3Make D because of distributing less than signal 22D 21D 20The output active potential, owing to do not have to send received signal to the adoptor of amplifier, so at this moment this device is just located off-mode.
D 20Mouth, not only for the adoptor of being responsible for short distance reception provides partially anti-, simultaneously its mouth also with D 18Another input end and by diode and Y 6The mouth of putting the plate washer signal behind the electric capacity differential of output links to each other.Work as D 20During the output active potential, it is not only closed the input end of signal, also the mouth of signal is closed (Y simultaneously 6To VS 1The only way which must be passed D of the brake signal of trigger end 13Block; Simultaneously also behind the differential put the plate washer signal through diode pair " " short circuit.)
Ten, power supply:
This power supply is a representative type series connection adjusting type constant voltage power suspply.It has three output end of pressure-stabilizing, is respectively E 1, E 2, E 3E 1For power output circuit as launching, boost etc., E 2Specialize in amplifying circuit, E 3For digital circuit.The purpose of doing so mainly is for eliminating the intercoupling between the circuit.Different with other power supply is, it the compound adjustment pipe base stage and " " between a switch triode is arranged, switch triode ground level links to each other with the inverted triode collecting electrode.Inverted triode is subjected to the control of the vehicle speed signal of rectification, filtered G output again.Like this, when start, the vehicle speed signal of G output will make that inverted triode is saturated, switch triode ends.At this moment constant voltage power suspply can normally be exported.When automobile stopped, vehicle speed signal disappeared, and at this moment phase-reversing tube is ended by saturated becoming, and switching valve is then by full by becoming, cause compound adjustment pipe base stage and emitter all clamper in zero volt.Thereby realized that car is walked certainly to open, car stops from the purpose of closing.
11, detect:
This device detects its every function with regard to needing in use for some time, knows what's what so that accomplish.Detect under steam and have a lot of inconvenience, when allowing automobile stop to detect, can all be closed and to carry out because of input, the output of power supply and signal again.For this device also can be detected it, just must in circuit, increase by a cover change-over circuit again when car stops.This cover circuit mainly is by two coaxial double-throw switch K 3, K 4And accessory circuit is formed.The Schmidt trigger D that shaping is used 19Mouth, be connected to the integrating circuit of forming with potential device, electric capacity.K 3One be terminated at D 19Input end.Two end points " 1 " and " 2 " of the other end are connected to G signal input part and integrating circuit mouth respectively.K 4A termination 12V power supply, two end points " 1 " and " 2 " of the other end do respectively unsettled with link to each other with G signal output part behind the rectifying and wave-filtering.K at ordinary times 3, K 4Throw " 1 " end entirely, only when detecting, just K 3, K 4Throw " 2 " end entirely.K 3When throwing " 2 ", make D 19Input end links to each other with the integrating circuit mouth, allows them constitute a multi-vibrator, and the oscillator signal that produces with it reaches for the vehicle speed signal after the shaping, goes input, mouth signal to open.Change its oscillation frequency by the regulator potentiometer resistance, to simulate the vehicle speed signal that G produces under the different speed of a motor vehicle.K 4Throw " 2 " 12V power supply and rectification, filtered G signal output part are connected, allow the 12V power supply reach and go constant voltage power suspply is opened for rectification, filtered vehicle speed signal.
12, mechanical system
Y 5Y 6The brake of output and put plate washer instruction (signal) and all carry out at last by this system.Native system has two separate parts.One is that the brake part is (by F 1Control), one is to put the plate washer part (by F 2Control).
The brake part: it by sleeve, draw heart yearn, stage clip plug, kinematic link, handle, Brake-actuating mechanism and latch hook to form.Before the use, move handle, the length of spring compressed that is in the sleeve (end leaves stomidium), latch hook is dropped into simultaneously in the hole of stage clip plug and it and is stumbled by kinematic link and stage clip plug.Work as Y 5During the output brake signal, F 1Suction will draw back latch hook, the stage clip plug after the relieving under the spring force effect promptly to the motion of the other end of sleeve.This moves through the core guiding principle silk that draws in the heart yearn that draws that links to each other with the stage clip plug and pass the sleeve stomidium and passes to Brake-actuating mechanism, passes to brake and clutch pedal respectively by Brake-actuating mechanism again, they is made be similar to the action that the driver rides, to carry out self-actuating brake.
The plate washer part: this part is by collapsible plate washer, fixedly strut, movable brace rod, latch hook, lock pin and support spring etc. are formed.At ordinary times, lock pin stumbles latch hook, and the movable brace rod that links to each other with latch hook holds up collapsible plate washer and be folded to below the bumper/spoiler.When the front obstacle occurs and makes Y 6When the plate washer signal is put in output, F 2Suction latch hook is decontroled, movable brace rod promptly struts the collapsible plate washer that is in folded state under the effect of support spring support power, makes to occur a stifled divider wall between bumper/spoiler and the ground, has so just prevented that people or obstacle from entering under the car.
The utlity model has multiple functional, degree of automation height and steady performance.
In function aspects: it not only has the auto alarm function but also has self-actuating brake and put the plate washer function.Because these actions are all finished automatically, this just remedies human unapprehensive deficiency greatly, thereby has reduced to accomplish the dependence of safety traffic to the driver.Even so,, also can the people in the place ahead or thing and then be slided, can drop to bottom line to cause damage sequence because of the barrier effect of the plate washer that strutted even because people or thing that irresistible inertia causes automobile to slide forward to have contacted the place ahead.
Aspect automation, except needing manually when whether this device service condition normally and is under special circumstances shut down, remaining adjusting is all finished automatically as the distance of command range and the switch of power supply.
Aspect stable: it has very strong antijamming capability again.Have two kinds nothing but for interference source: a kind of is by light little obstacle such as the little scraps of paper, leaf ... Deng.The interfering signal that a kind of this transmission circuit of right and wrong produces.
Before a kind of interference: by relation (4) formula of received signal and brake as can be seen, only make the adoptor of a, b two-way transmitting-receiving centering have transmitting that obstacle reflects to receive, make this two paths of signals mouth Y simultaneously 3, Y 4When being " 1 " simultaneously, just can causing brake and put plate washer.For people or big part object, above-mentioned condition is easy to be satisfied.That is to say that if people or big part object are when being within the command range of this device, it causes brake with regard to being easy to be received and dispatched by a road and b road to detecting simultaneously.For light little obstacle, because its volume is received and dispatched the distance between the emission light beam less than two-way, so even it is received and dispatched detecting by a or b road, it can not cause brake yet, this is because it can only make Y 3Or Y 4Be " 1 ", also do not satisfy making Y 3, Y 4Be the brake condition of " 1 " simultaneously.So this device has very strong antijamming capability to light little obstacle.
A kind of interference in back: this each source of disturbing is more widely, as sunlight, light, electricity sparking ... Deng, by the service condition of anti-interference process circuit as can be known, the condition that sort signal can form disturb this device be: can be in succession four times, and all be at every turn during the emission of transmission circuit in appearance.For not having any interference source of getting in touch with transmission circuit, what the signal that it produces can satisfy above-mentioned condition really is few.I once did tens thousand of artificial interferences test, and the result finishes none and triggers phenomenon.The utility model need not changed automobile so it also has, advantage easy to implement owing to be additional device simultaneously.
Below just by embodiment and for a more detailed description to the utility model more in conjunction with the accompanying drawings:
Fig. 1 is the utility model probe installation location structural representation.
Fig. 2 is the utility model left, center, right probe internal circuit schematic diagram.
Fig. 3 is a power unit of the present utility model, command range automatically regulating partial sum frequency-selecting amplifier section schematic circuit diagram.Fig. 4 is the utility model numerical control partial circuit schematic diagram.
Fig. 5 is the utility model mechanical system structure scheme drawing.
Fig. 6 is the utility model car speed sensor structural representation.
Fig. 7 is transmitting-receiving right physical construction and Principles of Regulation scheme drawing.
Fig. 8 is the utility model mechanical solid structure and circuit block diagram.
The utility model is made up of circuit and mechanical two large divisions.At first respectively adorn the infrared probe of a detection usefulness at the left, center, right end of Federal bumper 28 (Fig. 1).Detection is to be mounted on transmitting-receiving that infrared reception, power valve and power valve fwd collector lens 39 in the probe and adoptor fwd collector lens 31 form to realizing.
All have a upper and lower transmitting-receiving right in each probe, the transmitting-receiving in the probe of left, center, right is received and dispatched using A left, center, right on can being divided into 1, A 2, A 3Expression and the transmitting-receiving of following left, center, right are to using B 1, B 2, B 3Expression.Their downrange directed forward also all has simultaneously one to point to ground-surface to be used to survey the transmitting-receiving of road surface situation right in left and right probe, and they are represented with M and N respectively.When probe detection when there are abnormal condition in the place ahead, its received signal is through amplifying, separating ... Deng, can make this device report to the police, put plate washer and self-actuating brake respectively at last.
Below just again circuit part of the present utility model is elaborated in conjunction with Fig. 2,3,4: the V among Fig. 2,3,4, T, R, C, IC, L represent aerotron, diode, resistance, electric capacity, integrated package and inductance respectively.Below we also illustrate one by one with the order identical with the front various piece to them.
1, emission
The oscillation source of this emission is by IC among Fig. 4 6(CD40106) the 6th Schmidt trigger and R in 1C 1A multi-vibrator of forming.Signal is by IC 612 ends are directly given IC 5(CD4081) 2,5 ends, 2,5 ends are IC 5First and second AND gate input end is separately used D respectively for these two 1, D 2Expression.D 1Another input end (IC 51 end) direct and IC 6The 5th Schmidt trigger D 3Mouth 10 ends link to each other.D 3With R 2, R 3, T 26And C 2Formed a multi-vibrator that reciprocal of duty cycle is very big.Its mouth is also through T 27With IC 6The 4th Schmidt trigger D 4Input end 9 ends link to each other.9 ends also are connected to C 3And R 4D 4Mouth (IC 68 ends) direct and C 4Link to each other.C 4With R 5Constitute a differential circuit, its mouth and D 2Another input end IC 56 ends link to each other.IC 3Be connected into two separate buffered gates, it has stronger carrying load ability.4 and 10 ends are input ends, and 5 and 9 is mouths.D 1D 2Mouth (IC 53,4 ends) respectively with IC 84,10 ends link to each other.The front was said, D 3R 3Deng having formed the very big multi-vibrator of reciprocal of duty cycle.In other words the time of its output high potential very short, only be four oscillation periods of oscillation source, export the active potential time then can reach about 100.
D at ordinary times 3With differential circuit output active potential, D 1D 2Also export active potential.Has only the D of working as 3The output high potential is D 1When opening, the oscillator signal that oscillation source produces is just through D 1By its mouth IC 5The output of 3 ends promotes V through buffered gate again 2, at last by V 2The A of collector series connection 1A 2A 3Power valve T among the M 1T 2T 3T 4Launch.D 3High potential disappear, emission also just stops.
Just at D just now 3During the output high potential, just passed through T 27D 4Input end (IC 69 ends) throw high potential, now D 3Though high potential disappears, because C 3The storage effect, cause D 4Input end continues to keep high potential.As time goes on, C 3Through R 4Discharge makes IC 69 terminal potentials slowly descend.When dropping to D 4Threshold voltage V T-The time, its mouth IC 68 ends become high potential with regard to saltus step.This skip signal is through C 4Be added on IC 56 ends are also D 2Open.The oscillator signal of oscillation source generation at this moment passes through D again 2, V 1At last by B 1, B 2, B 3, the power valve T among the N 5, T 6, T 7, T 8Launch.When the differential circuit output voltage is reduced to D 2Threshold voltage the time, D 2Be blocked T again 5---T 6Emission also stops, until D 3Export high potential again, the circulation that this circuit just enters next week.C 26L 6Constitute decoupling circuit.
2, receive
(Fig. 2) receive by forming and receive and dispatch that right adoptor finishes.In the probe of left, center, right, the signal of the adoptor of upper and lower transmitting-receiving centering all is and flows in the amplifier that is provided with in this probe together.In three probes, have five such amplifiers, they use FD respectively 1, FD 2, FD 3, FD 4, FD 5Expression.FD wherein 1, FD 2, FD 3Serve as A respectively 1B 1, A 2B 2, A 3B 3Middle adoptor T 36, T 37, T 38, T 45, T 46, T 47, T 39, T 40, T 41, T 48, T 49, T 50, T 42, T 43, T 44, T 51, T 52, T 53The amplification task of received signal.FD 4, FD 5Serve as adoptor T among M, the N respectively 54, T 55The amplification task of received signal.
Earlier to FD 1Structure and principle of work thereof be introduced: it is by amplifying triode V 17, feedback aerotron V 18, shunt capacitance C 27, sample resistance R 20, biasing resistor R 19And supercharging diode T 34Form.R 19Through T 34Be V 17Provide bias current, T 36, T 37, T 38, T 45, T 46, T 47Received signal all be through T 34To V 17.V 17Emitter and V 18The emitter-base diode series connection, V 18Emitter-base diode also and C arranged 27And R 20V 18Collecting electrode and in the adoptor signal output part, the received signal of adoptor is through V 17Amplify the back by emitter-base bandgap grading output, like this will be at R 20Two ends form loss in voltage.Signal is big more, and loss in voltage is just high more, when height to breaking V 18During emitter-base diode, just form feedback current bias, this bias current is again through V 18Amplify the back incoming signal is formed shunting, thereby pind down V 17The increase of emitter current.As can be seen, this is a feedback factor very big (approaching a 100%) current parallel negative feedback amplifier circuit.Because feedback factor is very big, so it is to useless parasitic light signal such as sunlight, light ... do not have any amplifying power Deng just, thereby avoided of the interference of these signals, simultaneously because C this device 27The bypass effect, all make not only this amplifier to the AC signal of transition but also have higher gain.All the other four amplifier FD 2, FD 3, FD 4, FD 5Be respectively by V 19, V 20, V 21, V 22Realize with their accessory circuit.By FD 1, FD 2, FD 3Amplify the signal of output, all again and together from J 1Flow to next stage---selective frequency amplifier circuit.FD 4, FD 5Amplify the signal of output, they are also and together by J 2Flow to next stage---another selective frequency amplifier circuit.
3, amplify
(Fig. 3) this amplification is with ic chip 1And peripheral cell is formed the binary channel selective frequency amplifier circuit.A passage is served as FD 1, FD 2, FD 3The A of output 1, A 2, A 3, B 1, B 2, B 3Middle adoptor T 36--T 53The amplification task of received signal, we just are referred to as the ab passage this passage, and a passage is served as FD 4FD 5Adoptor T among M, the N of output 54T 55The amplification task of received signal, we just are referred to as the mn passage this passage.The ab channel signal is by IC 1The input of 8 ends, the mn channel signal is then imported by 1 end.The input end of ab and mn passage all is provided with L 1C 20And L 2C 21The LC frequency-selective circuit of forming.Allow interfering signal beyond the transmitting frequency received can switch to by it " ".
For making amplifying circuit that higher magnification factor can be arranged, allow through IC specially again 1The signal of two passages after the amplification is all given two three-stage amplifiers being made up of two-stage broadband and one-level frequency-selecting through capacitive coupling again, and the signal of these two passages can both be amplified again.Allow IC 1The signal of the ab passage of 6 ends output is through C 24Coupling is given by V 11, V 12, V 13In the three-stage amplifier of forming, allow by IC 1The signal of the mn passage of 3 ends output is through C 25Coupling is given by V 14V 15V 16The three-stage amplifier of forming.Signal after ab and mn two passages amplify is respectively by J 3And J 4End output.L 3C 22And L 4C 23Be respectively the frequency-selective circuit of ab and mn passage frequency-selective amplifying stage.
4, separate
(Fig. 4) task of this one-level is exactly will be A in the ab passage 1A 2A 3And B 1B 2B 3Received signal be separated into a road and b road, the separation of signals of mn passage is become m road and n road.
Before saying separation, we draw two exit Y earlier AY B, they are respectively from D 3Mouth (IC 610 ends) and differential circuit mouth (C 4With R 5The junction) draw.
The separation of mn passage: from J 4The signal of the mn passage of coming over is directly given IC 7(CD4081) 1,6 ends, these two ends are IC 7The first AND gate D 5With the second AND gate D 6An input end separately.D 5D 6Another input end (IC separately 72,5 ends) respectively with Y AY BLink to each other.
(off period of emission) Y at ordinary times AY BThe output active potential is D 5D 6Block, work as D 3(IC 610 ends) the output high potential makes power valve T among the M 4When launching, it also can pass through Y simultaneously AD 5Open.Like this, adoptor T among the M of mn passage output 54Received signal (Fig. 2) just can only be by D 5Mouth (IC 73 ends) output.The high potential of exporting when differential circuit makes power valve T among the N 8During emission, it also passes through Y simultaneously BAgain D 6Open, so just make adoptor T among the N 55The received signal energy and can only be from D 6Mouth (IC 74 ends) output, thus realized the separation of mn passage.
The separation of ab passage: from J 3The signal of the ab passage of coming over is directly given IC 7The 4th AND gate D 7With the 3rd AND gate D 8An input end (IC separately 713,8 ends).D 7Another input end (IC 712 ends) connect and IC 6Second Schmidt trigger (making inverter here uses) D 9Mouth (IC 64 ends).D 9Input end (IC 63 ends) through T 25With Y BLink to each other IC 63 ends also have R 6C 7D 8Another input end (IC 79 ends) direct and IC 6The 3rd Schmidt trigger D 10Mouth (the IC of (also making inverter uses) 66 ends) link to each other.D 10Input end (IC 65 ends) through T 24With Y ALink to each other, this end simultaneously also and R arranged 5C 6Y at ordinary times AY BBe active potential, they pass through D 10D 9Inverting function D 8D 7Open, work as D 3The output high potential makes power valve T in a road 1T 2T 3During emission, it also passes through Y simultaneously AAnd D 10D 8Block.When differential circuit output high potential (being a forward pointed pulse in fact), its one side is D 2Open the power valve T that makes b road transmitting-receiving centering 5T 6T 7Emission, one side is passed through Y BAnd D 9D 7Block, cause the A that exports in the ab passage 1A 2A 3Middle adoptor (Fig. 2) T 36---T 44Received signal can only be from D 7Output and B 1B 2B 3Middle adoptor T 45---T 53Received signal can only be from D 8Mouth output.From and finished the separation task of ab channel signal.
5, anti-interference process circuit
From IC 73, the mn two paths of signals (Fig. 4) of 4 ends output is given by T respectively 23R 11C 9And T 22R 10C 8In the rectification of forming, the filter circuit, allow the two-way received signal of 3,4 ends output obtain level and smooth after more respectively by Y 1Y 2End is given next stage---combinational circuit.
D 7Mouth (IC 711 ends) through T AWith by R AC AThe integrating circuit input end of forming links to each other.Allow D 7Output a road signal behind integration by integrating circuit mouth Y 3Flow to combinational circuit.C AGo back simultaneously and T 14T 12Anodal linking to each other.T 14Negative pole and D 11Mouth---IC 9(CD4093 is 42 input end Schmidt NOT-AND gates) 3 ends link to each other.D 11Two input end (IC 91,2 ends) respectively with D 10Mouth and D 7Mouth links to each other, T 14With D 11Constitute one and be C AThe discharge electronic switch K of discharge path is provided aThe on off mode of this switch and a road Y that transmits a(take from Y A) reception output signal X a(take from D 7The logical relation that (2) formula is arranged mouth).Special action relationships just makes switch have discernibility to the interfering signal of coming in.As can be known aforementioned, if D 7What export is transmitting of obstacle reflection, and this signal will cease altogether with the symbiosis that transmits on this road.Y when promptly launching a=1, X a=1, the off period of emission, Y a=0, X a=0, their substitutions (2) formula, as can be seen, these two kinds input K aAll the time be in off-state (K a=0).D 7The received signal pulse of output is through T AR AGive C ACharging makes C ABoth end voltage raises again and again, after four pulse periods, when being raised to the D that forms combinational circuit 16---IC 10During the threshold voltage of the 4th AND gate (CD4081), this signal effective input of combinational circuit.
If D 7Output be interfering signal, it just might occur during launching, also might be in the off period appearance of its emission, C can be given equally in it of appearance during launching ACharging also makes its both end voltage promote, and occurs at the emission off period, is not difficult to draw from (2) formula and circuit analysis, and interfering signal has at this moment just become connection K a, to C AThe discharge signal that discharges is as Y at this moment AEnd is active potential (Y a=0), and D 10Mouth (IC 66 ends) be high potential then, it is D 11An input end (IC 91 end) throws high potential, if D 7At this moment have again signal output (signal at this moment is interfering signal certainly) so this signal will make D 11With another input end (IC 92 ends) also throw high potential, because D 11Two input ends all be high potential, at this moment D 11Will export active potential, T 14Can make the K of composition because of locating the positively biased conducting aConnect and be C ADischarge.As can be seen, appear at during the emission and be stored in C AIn interfering signal, subsequently will by be appeared at the emission off period interfering signal bleed off.That is to say that the exercising result of interfering signal can only make C ACharge continually and discharge.Because C AOn voltage rise less than D 16Threshold voltage and become effective input of combinational circuit, so sort signal just can not form this device and disturb and cause misoperation.
The front was said, worked as Y aDuring for high potential, it can pass through D 10Inverting function and D 11Block (IC 91 end is thrown active potential), high potential disappears, D 11Also be opened at random, and T 24R 5C 6Effect can make D exactly 11Open and do a bit to postpone, purpose is to allow circuit can escape the interference of LC resistance mud vibration in the amplifying circuit.The circuit of Zu Chenging has such thing generation like this, exactly after obstacle is left away, and C AIn electric charge can be because of releasing nowhere continue preservation, the vacation picture that will cause a kind of obstacle also not leave away to combinational circuit like this.In order to eliminate this drawback, specially again at C AAlso other delayed discharge switch.Require: work as D 7When signal output is arranged, its energy automatic cutout, after blackout a period of time (being greater than the pitch time of twice emitting), it can connect a C again automatically AIn remaining electric charge bleed off.This switch is by T 10, T 12, IC 5The 4th AND gate and R 7C 15Form IC 6Two input ends of the 4th AND gate (12,13 end) are also made buffered gate (D together 13) usefulness, its input/output terminal respectively with T 10T 12Negative pole links to each other.Input end also and R arranged 7And C 15Work as D 7When signal output was arranged, it will pass through T 10Give C 15The charging and make the buffered gate input end throw high potential, its output high potential can make T again 12End, make the switch place off-state of composition.Behind the blackout, because C 15The storage effect and make switch continue keep off-state.As time goes on, C 15Pass through R 7Discharge and buffered gate input end current potential is descended, when dropping to its threshold voltage, it makes switch place on-state with regard to the output active potential.What more than say is the anti-interference process process of a road signal.The anti-interference process circuit on b road is by T BR BC BT 15T 11T 13R 8And C 16Form, they respectively with the T on a road AR AC AT 14T 12T 10R 7And C 15Effect and service condition identical, no longer repeat here.A after anti-interference process, b two paths of signals are respectively by Y 3, Y 4End output (to combinational circuit).
6, combinational circuit
This one-level circuit is one four end input, two end output logic circuits.M, n, a, b four road signal output part (Y 1, Y 2, Y 3, Y 4) be exactly its input end, two mouth (Y 5Y 6) export brake respectively and put the plate washer signal.These two mouths and input end have the logical relation of (3) (4) formula respectively.Corresponding decision circuit is by IC 10The 4th AND gate D 15, first AND gate and phase-reversing tube V 23Deng the NOT-AND gate D that forms 16With by T 18, T 16The OR-gate D that forms 17Realize.Y 1, Y 2To IC 102 ends and 1 end, Y 3Y 4To IC 1012,13 ends, D 15Mouth (IC 1011 ends) and D 16Mouth (V 23Collecting electrode) respectively with D 17Two input end (T 16And T 18Anodal) link to each other.Put plate washer signal output part Y 6Directly from D 15Mouth (IC 1011 ends) draw brake signal mouth Y 5From D 17Mouth is drawn, after again with IC 108 ends link to each other.
Under normal circumstances, M, N make their mouth Y because of constantly receiving the ground-surface reflected signal 1Y 2Be high potential, the transmitting-receiving of a, b two-way is to (A 1A 2A 3, B 1B 2B 3) make their mouth Y because of the reflected signal that can not receive obstacle 3Y4 is active potential, at this moment Y 5Y 6All no signal output.
In combinatorial input, work as Y 1Y 2In " 0 " (active potential) arranged when occurring, just illustrate that M or N have the situation that can not receive the road reflection signal, illustrate that ditch has appearred in the place ahead, at this moment D 16Mouth (V 23Collecting electrode) is high potential.Again through T 18Make D 17Mouth Y 5End output brake signal (high potential).
Work as Y 3Y 4When being " 1 " (high potential) simultaneously, just illustrate that obstacle has appearred in the place ahead, at this moment D 15Mouth (IC 1011 ends) the output high potential just makes Y at it 6When the plate washer signal was put in output, it passed through T again 16Make Y 5The output brake signal.As can be seen, this device can cause brake when ditch occurring in car the place ahead, and when obstacle appearred in the place ahead, it can not only cause brake, also can make simultaneously and strut a collapsible plate washer between bumper/spoiler and the ground, enters under the car in order to prevent people or obstacle.
7, booster driving circuit
From Y 5The brake signal of output will be delivered to D earlier 18(IC 10The 3rd AND gate) an input end (IC 108 ends), and then from its mouth (IC 1010 ends) output, 10 ends are through C 11K 1And T 19With VS 1Control extremely continuous.Put the plate washer signal by Y 6End output, this end is through C 12K 2And T 20With VS 2Control extremely continuous.VS 1, VS 2Power end respectively with electromagnet F 1, F 2Link to each other F 1, F 2The other end and together with reservoir capacitance C 10Link to each other V 6R 12Formed an inductance of three-point oscillating circuit with voltage transformer B, it can be transformed into interchange to direct current, after B level boosted and T 21Give C after the rectification 10Y is worked as in charging 5During the output brake signal, it will be through D 18C 11K 1And T 19Remove to trigger VS 1, VS 1After the conducting, be full of the C of electricity 10Will pass through F 1And VS 1Discharge, F 1Attractive force force the brake that is in preset condition partly to discharge, to carry out self-actuating brake.Y 6That exports puts the plate washer signal through C 12K 2T 20Trigger VS 2And driving F 2, F 2Attractive force force the plate washer that is in folded state to strut.Because C 10Internal resistance very little, so it can give F 1F 2A very big instantaneous power is provided, makes F 1F 2Has enough suction.T 19T 20Effect be in order to increase VS 1, VS 2Trigger level, to increase its antijamming capability.K 1, K 2Can cut off VS 1, VS 2The triggering source, in order to carrying out artificial shutdown where necessary.
8, sound, optical alarm circuit
This partial circuit mainly is by IC 9The the 4th, 3 two Schmidt's NOT-AND gate (Fig. 4) and peripheral circuit thereof are formed.Two input end (IC of the 3rd Schmidt's NOT-AND gate 98,9 ends) and make Schmidt trigger usefulness, it and R together 13C 14Formed audio frequency oscillator, its oscillator signal is through V 4V 6The multiple unit tube of forming amplifies rear drive loud speaker BL.The 4th Schmidt's NOT-AND gate and R 9C 13Formed its output signal of controlled oscillator again and divided two-way, the one tunnel through T 60Audio frequency oscillator is modulated, and one the tunnel until V 3Base stage and make luminotron T 9Flicker.
Controlled end (the IC of controlled oscillator 913 ends) link to each other with b road integrating circuit mouth.It is controlled by b road received signal in other words, the high potential of controlled oscillator output at ordinary times, and this high potential one tunnel makes T 9Luminous, the one tunnel makes audio frequency oscillator output active potential.In when design, specially allow the right command range of b road transmitting-receiving far away than a road always, like this, when the place ahead occurs obstacle also gradually to vehicle proximity, it can at first be made controlled oscillator obtain control signal by the transmitting-receiving of b road to detecting, oscillator signal divides two-way, makes T respectively 9Alternately send the sound and light alarm of foresight with BL.
9, command range auto-adjusting circuit
Fig. 7 is exactly that a transmitting-receiving is to Principles of Regulation and structural representation thereof.A 1A 2A 3, B 1B 2B 3Transmitting-receiving all is made up of a power valve 40 and three adoptors 41,42,43 them.In 40 front, an emission collector lens 39 is arranged, in 41,42,43 front, there is one to receive and to be formed centrally an emission axis 37 that extends forward (launching the beam center axis) in the collector lens 31,40 and 39.41,42,43 and 31 center has formed three reception axis 32,33,34,32,33,34 again respectively and has met at 38,36,35 points with 37 respectively again.Each intersection point is exactly the receiving center of corresponding adoptor, and 41,42,43 3 adoptors are respectively to the reception of the obstacle reflected signal that enters inbreeding point, middle intersection point, outbreeding point.From Fig. 2, it can also be seen that in addition, at each (T above the adoptor 56, T 55Except), all string has a diode again, so just can accomplish, have only and apply anti-partially the time to adoptor by diode, this adoptor just works, otherwise will because of received signal too a little less than, unablely break the PN junction of serial connection diode and enter amplifier and amplify.So just can be by changing the adjusting of realizing command range for the anti-inclined to one side state of supply of adoptor.For example: near when receiving and dispatching to doing respectively, in, during distance control, cooresponding anti-state of supply partially is respectively: give 41, give 41,42 and give 41,42,43 add entirely partially anti-.As can be seen, want to allow the right command range of transmitting-receiving can correspondingly do closely with the basic, normal, high speed of automobile, in, variation far away, as long as allow the anti-inclined to one side state of supply of three adoptors do corresponding variation with the speed of a motor vehicle.
Anti-supply circuit partially: this circuit has three mouth J 7, J 8, J 9(Fig. 3), be respectively A 1A 2A 3, B 1B 2B 3In be responsible near, in, the adoptor of distant reception provides partially anti-.G is a car speed sensor, and the vehicle speed signal that it produces is through J 5To Schmidt trigger D 19Input end---IC 61 end (Fig. 4) is through D 19After the shaping again by J 6Divide two-way output, the one tunnel through C 18R 17Differential (Fig. 3) removes to trigger IC after becoming pointed pulse 46 end (IC 4And peripheral circuit formed a monostable circuit DW, and its stable state is a high potential, R 18C 19The temporarily steady time of decision).One the tunnel directly to IC 3(CD4017) 14 ends.IC 3Be a decimal scale counting/distributing box (JC), 14 ends are its clock input (CP) ends, the direct and DW mouth (IC of its R that resets (15 end) 43 ends) link to each other.The decoding mouth Q of JC 3, Q 6, Q 9End (IC 3, 7,5,11 ends) again respectively through T 33, T 32, T 31With IC 2(CD4081) first, second and third AND gate two input end (IC separately 21,2,5,6,8,9 ends) link to each other.These three AND gates all are that two input ends are separately also made buffered gate usefulness together, and they use D respectively 20, D 21, D 22Expression, J 7, J 8, J 9Respectively from their mouth (IC 2, 3,4,10 ends) draw.Start, G will produce the alternating signal that a frequency is directly proportional with the speed of a motor vehicle, and this signal is through D 19Remove to trigger DW and JC after the shaping respectively, trigger DW and make it enter temporary stable state (active potential), trigger IC 3Can make its decoding mouth Q again 0Q 1Q 2High potential appears successively.In this counting/assigning process, in case the R end is received the reset signal (DW is by the skip signal of temporary stable state to stable state) of DW output, the counting sequence of JC again can be from Q 0Restart.Because the reset time of DW output is fixed, thus the frequency of energizing signal just the speed of a motor vehicle just can determine JC to decipher the quantity that mouth can be assigned to the end of pulse.
When car speed increased from low to high gradually, the quantity that correspondingly can be assigned to the decoding mouth of impulse singla also will be from Q 0, Q 0Q 1, Q 0Q 1Q 2Increase successively.When automobile is run at high speed, Q 3, Q 6, Q 9The pulse enable signal J that is assigned to 7, J 8, J 9The output high potential, they are respectively A 1A 2A 3, B 1B 2B 3In be responsible near, in, the adoptor T of distant reception 36T 39T 42T 45T 48T 51, T 37T 40T 43T 46T 49T 52, T 38T 41T 44T 47T 50T 53(Fig. 2) provide anti-(this three group of received pipe in the position of receiving and dispatching centering separately respectively as 41 among Fig. 7,42,43) partially, correspondingly receive and dispatch making distance control; When automobile drives at moderate speed, Q 9Make J because of distributing less than pulse 9Be active potential.At this moment T 38T 41T 44T 47T 50T 53Instead make transmitting-receiving to correspondingly doing middle distance control partially because of losing; When automobile is made low speed driving, Q 9Q 6Make J because of distributing less than pulse 9J 8Be active potential.At this moment T 37T 40T 43T 46T 49T 52Also lose instead partially, correspondingly receive and dispatch can only closely controlling; When automobile travels as Ultra-Low Speed, Q 9Q 6Q 3Make J because of distributing less than pulse 9J 8J 7Be active potential, make T at last 38T 41T 44T 47T 50T 53Also lose partially anti-.Because transmitting-receiving centering has not had to send received signal to the adoptor of amplifier, so at this moment this device just is in off-mode.It can also be seen that in addition when this device was in off-mode, it was not only closed the receiving end of signal (adoptor instead removes partially), the also output of control signal simultaneously.This be because, J 7End is gone back and D 18Another input end (IC 109 ends) and T 17Negative terminal link to each other (Fig. 4).Work as J 7When the output active potential removed transmitting-receiving centering last adoptor anti-partially, it was also Y 5The only way which must be passed D of output brake signal 18(IC 10The 3rd AND gate) blocks and Y 6Output is put the plate washer signal through T 17To " " short circuit.Thereby more increased the antijamming capability of this device.
10, power supply
The used power supply of this device is a representative type series connection adjusting type constant voltage power suspply (Fig. 3).Input 12V, it has three output end of pressure-stabilizing, E 1, E 2, E 3, V wherein 9V 10Formed the compound adjustment pipe.R 14T 29, R 15T 30Two secondary voltage stabilizing output E in parallel have been formed again 2, E 3E 2Through L 8Specialize in amplifying circuit.E 3For digital circuit, E 1For power output as launch, boost, circuit such as sound and light alarm.Distinguishedly be this power supply is many again switch triode V 8, inverted triode V 7In circuit.V 8Be connected to V 9Base stage and " " between, its base stage meets V 7Collecting electrode, car speed sensor G is through T 28With resistance and V 7Base stage links to each other, and so just can accomplish, when start, through T 28And C 17Vehicle speed signal behind the rectifying and wave-filtering will make V 7Saturated, V 8End, power supply is normally exported.When automobile stops, G blackout, at this moment V 7End V 8Saturated, make V 9Base stage to " " short circuit, power-off, thus make this power supply had car walk from open, car stops from the function of closing.
11, testing circuit
For this device can be detected its every function in use for some time, so that accomplish to know what's what, ad hoc circuit.The front was said, when automobile stops, not only the input of signal, output channel was blocked, and also the power supply of this device was cut off simultaneously, caused detection to carry out.This circuit is established for addressing this problem exactly.It mainly is by two coaxial double-throw switch K 3, K 4And accessory circuit is formed.K 3One be terminated at D 19Input end (IC 61 end is as Fig. 4).Two end points " 1 " " 2 " of the other end respectively with J 5, potential device R PAnd C 5The junction link to each other.R PAnother termination D 19Mouth.R 9C 6Constituted integrating circuit.One of K4 is terminated at 12V (storage battery) power supply, two end points " 1 " " 2 " of other end end do respectively unsettled and with rectifying and wave-filtering after G signal output part (T 28Negative terminal) continuous (Fig. 3).K at ordinary times 3K 4Throw " 1 " end entirely, only when detecting, just they are all thrown " 2 ".K 4Throw " 2 ", allow the 12V power supply reach and function in an acting capacity of the vehicle speed signal that G produces when sailing, constant voltage power suspply is opened (made V earlier 7Saturated, V 6By); K 3Throw " 2 " and make D 19Input end links to each other with the integrating circuit mouth, allows D 19, R P, C 5Formed a multi-vibrator, the signal that produces with it reaches the vehicle speed signal that produces for G, removes to trigger JC and DW.By regulating R PChanging its oscillation frequency, the vehicle speed signal that produces when simulating the different speed of a motor vehicle.
12, mechanical system
Native system has two separate parts, and one is the brake part, and one is to put plate washer part (Fig. 5).The brake part is by electromagnet F 1, latch hook 3, sleeve 1, stage clip 11, stage clip plug 9, handle 10, kinematic link 21, return spring 2, draw heart yearn 13, draw core guiding principle silk 14, Brake-actuating mechanism 12, draw heart yearn fixed terminal 8, draw core wire return spring 5 and draw core guiding principle silk shelves protruding 4 to form.Move 10 in advance earlier through 21 9 compressions, 3 under 2 tension, make 3 to drop in 9 the hole and stumble 9 simultaneously, and then reset 10 in the position parallel with 1.Work as Y 5During the output brake signal, F 1Just have powerful drive current, its suction pulling 3 also makes its perk, 9 are released, 9 under 11 effect rapidly to 1 the other end (direction of arrow) motion, this move through link to each other with 9 13 in the core wire 14 that draws send 12 to, remove to spur brake pedal 6 and clutch pedal 7 respectively by 12 fens two-way again, make them make the action that is similar to the driver and rides (they make the direction motion of pressing shown in the arrow respectively) respectively with actual self-actuating brake.
Plate washer partly is by electromagnet F 2, lock pin 20, fixedly strut 25, support spring 26, return spring 27, movable brace rod 23, collapsible plate washer 24 and latch hook 19 are formed.24 two ends link to each other with vehicle frame 18,23 through hinge 29,30 respectively, and are folded to the back of bumper/spoiler 28, and what link to each other with 23 simultaneously 19 is stumbled by 20.Work as Y 6When the plate washer signal is put in output, F 2In pass through with regard to having powerful electric current, its suction draws back 20,19 and is released, link to each other with 19 23 under gravity and 26 support power effects promptly 24 strutting of being in folded state, enter under the car to stop people or obstacle.Among Fig. 5 15,16,17,22 is respectively that the transmitting-receiving of b road is to (B 1B 2B 3) downrange, a road receive and dispatch (A 1A 2A 3) downrange, probe side-looking installation site, M, N receive and dispatch downrange.When the place ahead occurred obstacle also gradually to vehicle proximity, it at first can be made its mouth Y by the transmitting-receiving of b road to detecting 4Be " 1 ", make sound light alarming circuit send the sound and light alarm of foresight, take emergency measures to remind the driver.If the driver have little time reaction cause their continue near and again by the transmitting-receiving of a road when detecting, it can make a road signal output part Y again 3Also be " 1 ", from combinational circuit (4) (5) formula as can be known, this input Y 3Y 4Be " 1 " to have satisfied brake signal mouth Y simultaneously simultaneously 5, put plate washer signal output part Y 6The condition of output signal, Y 5Y 6Trigger VS respectively 1And VS 2And driving F 1And F 2F 1Suction pulling 3 (Fig. 5) carry out self-stopping while, F 2Suction spur 20 and make 24 to strut again.At this moment M or N can make their mouth Y because of can not receive the ground-surface reflected signal when zanjon appears in the front 1Or Y 2In the appearance of " 0 " is arranged, from (4) formula as can be seen, at this moment it can only make Y 5The output brake signal is carried out self-actuating brake.
Again structure and the principle of work of car speed sensor G are done some explanation below in conjunction with Fig. 6.
It comprises a ring 49 that is enclosed within on the propeller-shaft 50, is embedded with permanent magnet 51 in 49, the iron-core coil at the bottom of the next door 49 (top) has to be fixed on wagon box on 52.Iron-core coil is made up of iron core 48 and coil 47, and 47 are enclosed within on 48.When start, 50 will rotate and drive 51,51 by the direction shown in the arrow does relative motion and cuts 51 magnetic line of force with iron-core coil, so will induce the alternating signal that frequency is directly proportional with the speed of a motor vehicle at 47 two ends.
In conjunction with Fig. 8 the utility model is done system description at last:
A among the figure 10, A 20, A 30, B 10, B 20, B 30And M oAnd N oBe respectively A 1, A 2, A 3, B 1, B 2, B 3And M and the right downrange of N transmitting-receiving.The amplifier MN that the right received signal of these transmitting-receivings sends the amplifier AB of ab passage and mn passage respectively to through transmission line 44 and 45 carries out frequency-selecting and amplifies, and the signal that AB and MN amplify output flows to separation circuit FL respectively 2And FL 1, FL 1Isolated M and the right signal of N transmitting-receiving divide two-way to flow to combinational circuit ZH, FL 2Isolated A 1, A 2, A 3And B 1, B 2, B 3Received signal earlier through anti-dry-cure circuit SK aAnd SK bDo just to flow to combinational circuit ZH, two mouth Y of ZH after anti-interference is handled 6And Y 6Output is braked and is put plate washer signal, Y respectively 5Y 6Respectively through driving circuit Q A, Q BDrive brake solenoid and put the plate washer electromagnet, to carry out self-actuating brake and strut folding type baffle plate 24,24th between bumper/spoiler 28 and ground, be used to stop that people or obstacle enter under the car, dotted line 46 is the baffle plates 24 that are in the state of unfolding.

Claims (7)

1, a kind of to the automobile in travelling, can avoid and reduce that its traffic accident takes place, not only can auto alarm but also have self-actuating brake and put the multi-purpose vehicle(MPV) self-control safety device of plate washer function, it is by transmission circuit, acceptor circuit, selective frequency amplifier circuit, separation circuit, the anti-interference process circuit, combinational circuit, booster driving circuit, sound light alarming circuit, the command range auto-adjusting circuit, power circuit, these 12 parts of testing circuit and mechanical system are formed, and recited above is a left side that is mounted on bumper/spoiler 28, in, going up in three probes of right-hand member is left, in, the right side and bottom left, in, right transmitting-receiving is to A 1, A 2, A 3And B 1, B 2, B 3Obstacle before the car is surveyed, and the detection of the preceding road surface of car situation is received and dispatched to realizing, at A by the M in the left and right probe, N 1, A 2, A 3And B 1, B 2, B 3Transmitting-receiving centering, no matter be which transmitting-receiving is to receiving the reflected signal of obstacle, after the acceptor circuit that is provided with in this probe tentatively amplifies, all the ab passage that will deliver to again in the selective frequency amplifier circuit amplifies, M, N transmitting-receiving is to after receiving that acceptor circuit that ground-surface reflected signal is provided with tentatively amplifies in this probe, all to deliver to again in the selective frequency amplifier circuit another passage---the mn passage amplifies, the effect of separation circuit is the A of ab, mn passage output 1, A 2, A 3, B 1, B 2, B 3, M, N the transmitting-receiving right received signal be separated into a, b, m, n road, wherein a, b two-way are done to deliver to combinational circuit together with the mn road after the anti-interference process, two mouth Y of combinational circuit 5, Y 6Output is braked and is put plate washer signal, Y respectively 5Output signal triggers VS 1, VS 1Drive magnetic F 1, F 1Attractive force draw back the brake part of the mechanical system that is in preset condition, carry out self-actuating brake, Y 6Output signal triggers VS 2, VS 2Drive magnetic F 2, F 2Suction draw back the plate washer part of the mechanical system that is in preset condition, make between vehicle frame 18 and ground, to strut a plate washer 24, it is characterized in that a road anti-interference process circuit is by diode T A, integrating resistor R A, integrating capacitor C AWith electronic switch K aForm T APositive and negative end respectively with the gating AND gate D of separation circuit 7Mouth and R AAn end link to each other R AAnother end and C ALink to each other R AWith C AConstitute integrating circuit, K aWith C AParallel connection, a road signal behind integration again from integrating circuit mouth Y 3End output, b road anti-interference process is by diode T B, integrating resistor R B, integrating capacitor C BWith electronic switch K bForm T BPositive and negative end respectively with the gating AND gate D of separation circuit 8Mouth and R BAn end link to each other R BThe other end and C BLink to each other K bWith C BParallel connection, b road signal behind integration again from integrating circuit mouth Y 4End output, combinational circuit is by AND gate D 15, NOT-AND gate D 16With OR-gate D 17Form D 17Two input ends respectively with D 15, D 16Two mouths link to each other Y 5Y 6Respectively from D 17, D 15Mouth is drawn, and mechanical system has the two ends of a plate washer 24,24 to link to each other with movable brace rod 23 with vehicle frame 18 respectively and be collapsible.
2, multi-purpose vehicle(MPV) self-control safety device according to claim 1 is characterized in that a road anti-interference process circuit is by diode T A, resistance R A, capacitor C AElectronic switch K aForm T APositive and negative end respectively with D 7Mouth and R ALink to each other R AC AConstitute integrating circuit, K aWith C AParallel connection, K aOn off mode and a road Y that transmits a, receive output signal X aLogical relation be K a = X a Y a - , pending signal is by T AThe anode input is handled the back by R AC AJunction output.
3, according to claim 1,2 described multi-purpose vehicle(MPV) self-control safety devices, it is characterized in that K aBe by switching diode T 14, inverter D 10, NOT-AND gate D 11With switching diode T 24Form T 14Negative terminal and D 11Mouth links to each other, D 11Input end and D 7Mouth links to each other, T 24Positive and negative end respectively with Y AEnd and D 10Input end links to each other, D 10Mouth and D 11Another input end links to each other, T 24Anode and D 11Another input end is decision K aThe control end of on off mode.
4, multi-purpose vehicle(MPV) self-control safety device according to claim 1 is characterized in that b road anti-interference process circuit is by diode T B, resistance R B, capacitor C BWith electronic switch K bForm T BPositive and negative end respectively with D 8Mouth and R BLink to each other R BC BConstitute integrating circuit, K bWith C BParallel connection, K bOn off mode and the b road Y that transmits b, receive output signal X bLogical relation be K b = X b Y b - , pending signal is by T BThe anode input is handled the back by R BC BJunction output.
5, according to claim 1,4 described multi-purpose vehicle(MPV) self-control safety devices, it is characterized in that K bBe by switching diode T 15, NOT-AND gate D 12, inverter D 9With diode T 26Form T 16Negative terminal and D 12Mouth links to each other, D 12Input end and D 8Mouth links to each other, D 12Another input end and D 9Mouth links to each other, T 25Positive and negative end respectively with Y BAnd D 9Input end links to each other, T 25Anode and D 12Another input end is decision K bThe control end of switching state.
6, multi-purpose vehicle(MPV) self-control safety device according to claim 1 is characterized in that baffle plate 24 material therefors are chemical ﹠ blended fabrics.
7, multi-purpose vehicle(MPV) self-control safety device according to claim 1 is characterized in that two mouth Y in the combinational circuit 5Y 6With a, b, m, n four road signal output part Y 3, Y 4, Y 1, Y 2Logical relation be respectively: Y 5 = Y 3 Y 4 + Y 1 Y 2 ‾ Y 6＝Y 3Y 4
CN 93246785 1993-11-24 1993-11-24 Multifunctional safeguard for vehicle Expired - Fee Related CN2218120Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93246785 CN2218120Y (en) 1993-11-24 1993-11-24 Multifunctional safeguard for vehicle

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Application Number Priority Date Filing Date Title
CN 93246785 CN2218120Y (en) 1993-11-24 1993-11-24 Multifunctional safeguard for vehicle

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CN2218120Y true CN2218120Y (en) 1996-01-24

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CN 93246785 Expired - Fee Related CN2218120Y (en) 1993-11-24 1993-11-24 Multifunctional safeguard for vehicle

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101626917B (en) * 2007-02-28 2012-11-14 宝马股份公司 Method and start control device for controlling an automatic start-up process of a drive unit
CN103318153A (en) * 2012-03-20 2013-09-25 沈同文 Automobile parking space anti-bump braking tentacle
CN103921775A (en) * 2014-04-25 2014-07-16 德州学院 Automobile remote control brake device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101626917B (en) * 2007-02-28 2012-11-14 宝马股份公司 Method and start control device for controlling an automatic start-up process of a drive unit
CN103318153A (en) * 2012-03-20 2013-09-25 沈同文 Automobile parking space anti-bump braking tentacle
CN103318153B (en) * 2012-03-20 2016-05-04 沈同文 Automobile parking position anti-collision rubs braking antenna
CN103921775A (en) * 2014-04-25 2014-07-16 德州学院 Automobile remote control brake device

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