CN101823459B - Flash-type brake lamp controller with fault warning function - Google Patents
Flash-type brake lamp controller with fault warning function Download PDFInfo
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- CN101823459B CN101823459B CN2010101202873A CN201010120287A CN101823459B CN 101823459 B CN101823459 B CN 101823459B CN 2010101202873 A CN2010101202873 A CN 2010101202873A CN 201010120287 A CN201010120287 A CN 201010120287A CN 101823459 B CN101823459 B CN 101823459B
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Abstract
The invention relates to a brake lamp controller with flash function and fault warning function. The brake lamp controller is characterized in that a brake lamp controller circuit consists of four functional modules comprising a timing circuit, an oscillating circuit, a drive circuit and an audio warning circuit, wherein the timing circuit is connected to the oscillating circuit through an NPN-type triode Q1; the oscillating circuit is connected to the drive circuit through a PNP-type triode Q2; the drive circuit is connected to the audio warning circuit by using a partial voltage tap and a normally-closed switch of a relay; and three connecting wires are connected outside the brake lamp controller. The working power supply of the controller directly adopts a primary power supply of a motor vehicle. After a brake pedal is treaded down, a brake lamp first flashes and then is normally on so as to effectively remind a back driver. The controller also has the function of warning poor brake lamp contact or filament open-circuit damage; a few of external connecting wires are convenient for mounting or refitting; no static power consumption is favorable for saving energy and prolonging the service life of a storage battery of the motor vehicle; the power supply voltage has wide applicable range; and a pure simulation mode easily ensures the working reliability of the circuit.
Description
Technical field
The present invention relates to a kind of automobile-use brake lamp controller, relate in particular to the brake lamp controller with flash function and fault warning function.
Background technology
Rear-end collision is traffic accident occurred frequently, so stoplight stop lamp is even more important for the warning function of rear car, and the warning function of stoplight stop lamp comprises that alarming effect (or efficiency) and driver are to this car stoplight stop lamp two aspects of knowing the inside story in time that lost efficacy.Patent has for this reason proposed some solutions.
The file that Chinese Patent Application No. is 200810246729.1 has been announced a kind of automobile tail light control setup be comprised of car speed sensor, Principles of Radar apomecometer and the controller that comprises the circuit such as micro controller system.This device can according to the actual vehicle speed of front and back two cars and spacing forecasts safe distance between vehicles and drive taillight to carry out safety, warning and risk identification indication.Shortcoming is that inconvenience is installed on the car of finalizing the design, and the functional reliability of the micro controller system that control setup comprises requires high, under this very poor electric circumstance of automobile, is difficult to ensure card.Controller damages alarm function without stoplight stop lamp in addition, has quiescent dissipation.
The file that Chinese Patent Application No. is 200820082882.0 has been announced a kind of automobile tail light that show acceleration and deceleration, this device adopts the sensor that detects the degree whether Das Gaspedal and brake pedal trampled and trampled is set in throttle, brake system, the signal of sensor is delivered to micro controller system and is processed directly rear or drive signal lamp luminous through electronic switching circuit, realizes the function that acceleration and deceleration and degree thereof show.Shortcoming is that inconvenience is installed on the car of finalizing the design, and the functional reliability of the micro controller system that control setup comprises requires high, under this very poor electric circumstance of automobile, is difficult to ensure card.This device damages alarm function without stoplight stop lamp in addition, has quiescent dissipation.
But the file that Chinese Patent Application No. is 200620017310.5 has been announced a kind of automobile brake tail lamp system of early warning, can unclamp Das Gaspedal while also not stepping on brake pedal at chaufeur, send early warning signal and make the current state of rear chaufeur understanding preceding vehicle make in time corresponding measure, thereby greatly reduce the generation of rear-end collision.This system comprises three dot matrix LEDss, is arranged in the concentric circles that three diameters increase successively; When sending early warning signal, the form that three concentric circless are glimmered successively by inner circle hoop outer toroid is sent; When sending the braking warning signal, three concentric circless are lighted simultaneously.Shortcoming is that this system is damaged alarm function without stoplight stop lamp, on the car of finalizing the design, installs inconvenient.
The file that Chinese Patent Application No. is 02228885.6 has been announced a kind of comprehensive alarm controller of vehicle, adopt modular design, the control desk assembly mainly comprises four functional circuits: the filament failure testing circuit that taillight detects automatically, safety belt reminding circuit, car door patent and light patent warning circuit.Controller is without the brake flashing function.
The file that Chinese Patent Application No. is 97246593.6 has been announced a kind of brake lamp device for car, on the automobile brake lamp formed by brake pedal 1, BK Brake Switch K1, red brake taillight L1, install a secondary brake lamp device for car formed by preparation brake fine motion sensitive switch K2, yellow preparation stoplight stop lamp L2 and control circuit 2 additional on brake pedal 1 device; Can also increase on this basis three grades of brake lamp device for cars that formed by sensor 3, sampling circuit 4, red emergent braking lamp L3.This device can make the braking trend that the automobilist can clear and definite front truck, improves the processing capacity when dealing with complex road surface and being in an emergency.Shortcoming is that inconvenience is installed on the car of finalizing the design, and device does not comprise stoplight stop lamp and damages alarm function.
The file that Chinese Patent Application No. is 95243441.5 has been announced a kind of automobile brake flash of light monitoring device.Be a kind of being contained in operator's compartment, be convenient to the automobile brake flash of light monitoring device of chaufeur analysis judgement car rear brake lamp quality.Use 555 time base circuits to realize the flicker of stoplight stop lamp for main control chip, use light-emitting diode to realize stoplight stop lamp synchronous flashing in operator's compartment.Shortcoming is to be not easy to install additional the light-emitting diode described in file on the car of finalizing the design, and does not also comprise stoplight stop lamp and damages alarm function; Point out that in passing the technical scheme details that this patent document announces is untrue, IC (i.e. 555 time base circuits) pin numbering mal for example, the stream diode does not continue at the relay coil two ends.
The file that Chinese Patent Application No. is 200520112630.4 has been announced a kind of Intelligent lamp light changing device for automobile brake, this device can effectively be distinguished normal braking or emergency brake, during emergency brake, stoplight stop lamp glimmers, the sudden stop signal is from the antiblock device circuit extraction, shortcoming is to have used more device, even nearly three IC integrated circuit, reduced circuit reliability, and device does not comprise stoplight stop lamp and damages alarm function.
The file that Chinese Patent Application No. is 200520097766.2 has been announced a kind of emergency brake signaling apparatus for automobile, this device utilizes deceleration sensor to measure speed of a motor vehicle variation, when slowing down, change while reaching IC program preset value, excite SCM program to send the emergency brake signal, the emergency brake signal is a series of flash signals that change according to certain rules.Shortcoming is that inconvenience is installed on the car of finalizing the design, and the functional reliability of the micro controller system that control setup comprises requires high, under this very poor electric circumstance of automobile, is difficult to ensure card.This device damages alarm function without stoplight stop lamp in addition.
The file that China Patent No. is ZL92227995.0 has been announced a kind of Faulse alarm for brake lamp of car, by beat generator, audio-frequency generator, display circuit and detection control circuit, formed, the warning of sounding when stoplight stop lamp damages, its main control chip IC1 and IC2 are 555 time base circuits, have also utilized the axitron device.Shortcoming is that the existence of stabilivolt and the static state of circuit all consume electric energy, in addition stoplight stop lamp flicker free function.
The file that Chinese Patent Application No. is 200620115669.6 and 200720155866.5 has been announced a kind of flash brake lamp controller, comprises an input end IN, a mouth OUT and a ground terminal GND; Controller is comprised of a power-switching circuit, a microcontroller circuit and a driving circuit, can realize the glittering of stoplight stop lamp.Shortcoming is that power-switching circuit, microcontroller and driving circuit need quiescent dissipation larger, and the functional reliability of microcontroller requires very high, especially under this very poor electric circumstance of automobile, is difficult to ensure card, and controller damages alarm function without stoplight stop lamp in addition.
The file that Chinese Patent Application No. is 93233320.6 has been announced a kind of alarm with display for failure of vehicle lights, by constant pressure source feed circuit, fault sampling comparator circuit, logic distinguishing circuit, fault display circuit and fault warning the electric circuit constitute.Three end integrated voltage stabilizer ICI, four comparator IC2, four NAND gate IC3, time-base integrated circuit IC4 have been adopted.Shortcoming is to use device more, and only integrated package just reaches four, has reduced reliability, and alarm device does not provide the brake light flicker function in addition.
The file that Chinese Patent Application No. is 200420093864.4 has been announced a kind of Faulse alarm for brake lamp of car, adopt resistance, electric capacity, joint denial gate, diode, light-emitting diode, bridge rectifier forming circuit, when stoplight stop lamp, BK Brake Switch damage or circuit break down, can by sound and light alarm, be pointed out in time.Shortcoming is that circuit all needs static state to maintain electric current no matter whether step on BK Brake Switch, is unfavorable for energy-conservationly, moreover when trouble free, luminous alarming diode Chang Liang does not meet people's thinking habit, and the brake light flicker function is not provided in addition.
The file that Chinese Patent Application No. is 200810186623.7 has been announced a kind of braking automobile lamp control device and control method thereof, comprise main brake cylinder, car load ECU, pressure sensor is housed on main brake cylinder, pressure sensor signal output meets car load ECU, and ECU is controlled the stoplight stop lamp show state according to pressure sensor signal.When automobile emergency brake, can make stoplight stop lamp in the emergency braking show state as flashing function.These apparatus and method do not provide the brake lamp fault alarming function.
The file that Chinese Patent Application No. is 93247723.2 has been announced a kind of Faulse alarm for brake lamp of car, comprise trouble detect circuit, Delayed sonic rattler, stoplight stop lamp connects BK Brake Switch, the lamp fault detection circuit is connected between BK Brake Switch and power supply, the lamp fault detection circuit connects the Delayed sonic rattler, during the stoplight stop lamp trouble free with synchronous sound equipment, when the brake system et out of order without synchronous sound equipment.Shortcoming is that annunciator exists quiescent dissipation, no matter whether brake, and equal battery consumption electric energy, this device does not provide the brake light flicker function.
The file that Chinese Patent Application No. is 91227378.X has been announced a kind of brake lamp failure monitor alarm for car, by four aerotrons, two light-emitting diodes, a buzzer phone and some resistance, formed, the change of voltage that dissimilar fault produces on sample resistance makes circuit produce different reactions, thereby reach, can distinguish failure situations and does corresponding warning.Shortcoming is requirement device parameters narrow range, realizes that batch manufacturing has any problem, and the brake light flicker function is not provided in addition.
Above existing patented technology or the brake light flicker function only is provided, the brake lights failure warning function only is provided, do not provide and both are organically combined and realize without quiescent dissipation, be beneficial to energy-conservation technology, and the flashing function provided is to continue flicker after trampling brake pedal.Authority's observed data shows: when front truck brake, brake light flicker brightly can more effectively be reminded the rear car driver than stoplight stop lamp is normal, and the two causes that rear car driver's reaction time differs from and reaches 0.2～0.3 second.But the unsuitable normal time remaining flicker of stoplight stop lamp, otherwise easily cause rear car driver visual fatigue, therefore should adopt and trample the brake pedal rear brake lamp and become after by of short duration flicker often bright until loosely lift the mode that the brake pedal rear brake lamp extinguishes, the frequent switch of stoplight stop lamp easily makes filament damage, and the brake lights failure alarm function of therefore reminding the driver more to change the bulb is to safe driving and important.
Summary of the invention
The purpose of this invention is to provide a kind of brake lamp controller with flash function and fault warning function, the function realized is: brake pedal step on after in the very first time section of setting brake light flicker then become Chang Liang, lift rear brake lamp when the brake pedal pine and extinguish; When stoplight stop lamp bad contact or open filament damage, brake pedal sends alarm call after stepping on.Require controller to there is little, the external line of volume few (3) and just can not be arranged on the car of having finalized the design (also can as the accessory of prepattern car design selection) in order to do not need that automobile appearance and gauge panel are done to any change, brake pedal is not stepped on Time Controller idle (being called quiescent dissipation), and controller works in pure analog circuit state.
The technical scheme that realizes above-mentioned purpose is: the brake lamp controller circuit is by timing circuit, oscillating circuit, four functional modules of driving circuit and sound warning circuit form, whether timing circuit is connected to oscillating circuit by NPN type aerotron and vibrates to control oscillating circuit, oscillating circuit is connected to driving circuit to control the light on and off of stoplight stop lamp by the positive-negative-positive aerotron, tapping location point and relay J 1 normally closed switch location point that driving circuit is connected with stoplight stop lamp by resistance R 8 respectively, be connected to the sound alarm circuit, external 3 lines of brake lamp controller circuit, to 3 exits should be arranged, be respectively positive source VCC, power cathode GND and control output OUT, exit positive source VCC is connected to brake pedal gang switch K1, the other end of the brake pedal gang switch K1 motor-car B+ that picks, exit power cathode GND is connected to the negative pole of motorcar battery, and exit is controlled output OUT and is connected to automotive vehicle brake lamp, another termination exit power cathode GND of automotive vehicle brake lamp.The working power of brake lamp controller circuit directly adopts motorcar battery.Step on rear braking pedal linkage K switch 1 closure when brake pedal, controller circuitry works on power; Lift rear braking pedal linkage K switch 1 when the brake pedal pine and disconnect, the controller circuitry dead electricity quits work, and does not consume electric energy.
Timing circuit is comprised of resistance R 5, diode D1, stabilivolt DW1, aerotron Q1 and capacitor C 2.Wherein resistance R 5 is in parallel with diode D1, and diode D1 negative electrode meets exit positive source VCC, and diode D1 anode connects stabilivolt DW1 negative electrode; Stabilivolt DW1 anode connects aerotron Q1 base stage; Capacitor C 2 one terminating diode D1 anodes and stabilivolt DW1 negative electrode, another termination exit power cathode GND; Aerotron Q1 emitter meets exit power cathode GND, and aerotron Q1 collecting electrode connects voltage ratio than 1 pin of integrated chip IC1.
Oscillating circuit is comprised of than one group of voltage comparison amplifier IC1-1, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 6 of integrated chip IC1 capacitor C 1, voltage ratio.Capacitor C 1 one termination exit power cathode GND wherein, another termination voltage ratio is than 2 pin of integrated chip IC1; Resistance R 1 one termination voltages are 2 pin of integrated chip IC1 relatively, and another termination voltage ratio is than 1 pin of integrated chip IC1; Resistance R 2 one termination voltages are 1 pin of integrated chip IC1 relatively, and another termination voltage ratio is than 3 pin of integrated chip IC1; Resistance R 3 one termination exit power cathode GND, another termination voltage ratio is than 3 pin of integrated chip IC1; Resistance R 4 one termination voltages are 3 pin of integrated chip IC1 relatively, another termination exit positive source VCC; Resistance R 6 one termination voltages are 1 pin of integrated chip IC1 relatively, another termination exit positive source VCC.
Driving circuit is comprised of normal open switch J1-1, diode D2 and the resistance R 8 of resistance R 7, aerotron Q2, relay J 1 coil and relay J 1.Wherein the voltage ratio in resistance R 7 one termination oscillating circuits is than 1 pin of integrated chip IC1, another termination aerotron Q2 base stage; Aerotron Q2 emitter meets exit positive source VCC; The coil winding of relay J 1 is in parallel with diode D2, and diode D2 negative electrode connects aerotron Q2 collecting electrode, and diode D2 anode meets exit power cathode GND; Resistance R 8 is in parallel with the normal open switch J1-1 of relay J 1, and relay J 1 moving contact meets exit positive source VCC, and open contact connects voltage ratio than 6 pin of integrated chip IC1 and is connected to controls output exit OUT.
By voltage ratio, another group voltage comparison amplifier IC1-2, resistance R 9, adjustable resistance VR1, relay J 1 normally closed switch J1-2 and the buzzer phone BUZ1 than integrated chip IC1 forms the sound alarm circuit, resistance R 9 one termination power negative pole GND wherein, the voltage ratio in another termination oscillating circuit is than 5 pin of integrated chip IC1; Voltage ratio in VR1 mono-termination oscillating circuit is than 5 pin of integrated chip IC1, another termination positive source VCC; The normally closed contact of relay J 1 connects the positive pole of buzzer phone BUZ1, and the moving contact of relay J 1 meets positive source VCC; The negative pole of buzzer phone BUZ1 connects voltage ratio in oscillating circuit than 7 pin of integrated chip IC1; Voltage ratio in oscillating circuit meets positive source VCC than 8 pin of integrated chip IC1, and the voltage ratio in oscillating circuit meets power cathode GND than 4 pin of integrated chip ICI.
Voltage ratio in described oscillating circuit comprises two groups or four groups of voltage comparison amplifiers than integrated chip IC1, the present invention only need be with two groups of voltage comparison amplifiers, when the input current potential of the input end in the same way of voltage comparison amplifier during higher than reverse input end, it is output as the corresponding high level of logical one, otherwise is output as the corresponding low level of logical zero.
Voltage ratio in described oscillating circuit means respectively input end, reverse input end and mouth in the same way than 3 pin of integrated chip IC1,2 pin and 1 pin, forms one group of voltage comparison amplifier IC1-1; Voltage ratio in oscillating circuit means respectively to form input end in the same way, reverse input end and the mouth of another group voltage comparison amplifier IC1-2 than 5 pin of integrated chip IC1,6 pin and 7 pin; Voltage ratio in oscillating circuit means than 8 pin of integrated chip IC1 and 4 pin that respectively voltage ratio is than the positive source of integrated chip and power cathode input end.
Described relay J 1 comprises an open contact, a normally closed contact and a moving contact, and moving contact and open contact form normal open switch J1-1, and moving contact and normally closed contact form normally closed switch J1-2.
Described capacitor C 1 can or have polar capacitor with polarity free capacitor, and capacitor C 2 also can or have polar capacitor with polarity free capacitor.
Described positive source VCC is the positive pole of storage battery E1 through the moving power supply on vehicle of brake pedal gang switch K1 junctor, the moving power supply on vehicle of power cathode GND junctor is the negative pole of storage battery E1, controller output OUT connects an end of automotive vehicle brake lamp, the other end of stoplight stop lamp connects power cathode GND, step on rear braking pedal linkage K switch 1 closure when brake pedal, controller works on power; After the brake pedal pine is lifted, the controller dead electricity quits work.Adjustable resistance VR1 can substitute with adjustable resistance of fixed value resistance series connection, makes the full scale of adjustable resistance dwindle to increase the resolution of adjustable resistance.
Principle of the present invention is:
The schematic diagram of controller is divided into four functional modules by circuit function: oscillating circuit, timing circuit, driving circuit and sound warning circuit.Step on rear braking pedal linkage K switch 1 closure when brake pedal, controller circuitry works on power; Lift rear braking pedal linkage K switch 1 when the brake pedal pine and disconnect, the controller circuitry dead electricity quits work, and does not consume electric energy; Below by the functional module of dividing, describe respectively,
The principle of work of oscillating circuit
1. at timing circuit, make under the state of aerotron Q1 cut-off: when the reverse input end 2 pin current potentials of voltage comparison amplifier IC1-1 during lower than input end 3 pin in the same way, mouth 1 pin output high level, it (is power line voltage that potential value approaches VCC, as follows), now the current potential of input end 3 pin approximates resistance R 2//R4 and connects to the VCC dividing potential drop with resistance R 3, its size is U3H=VCC* (R3/ ((R2//R4)+R3)), because now the current potential of 2 pin is lower than the current potential U3H of 3 pin, so the current potential of 2 pin is inevitable lower than the 1 pin current potential that approaches VCC, flow through the direction of current of resistance R 1 for from right to left, 1 pin of voltage comparison amplifier IC1-1 is by 1 charging of 1 pair of capacitor C of resistance R, process of charging raises the current potential of reverse input end 2 pin gradually, when being elevated to the current potential U3H of input end 3 pin in the same way, mouth 1 pin current potential becomes the low level close to 0V, simultaneously, the current potential of 3 pin is because of the steep decline of the positive feedback effect of resistance R 2, its potential value is reduced to and is approximated resistance R 4 series resistance R2//R3 to the VCC dividing potential drop, its size is U3L=VCC* ((R2//R3)/((R2//R3)+R4)), the current potential of cause 1 pin has become close to 0V, and the current potential of 2 pin has risen to U3H before, so flow through the direction of current of resistance R 1 for from left to right, capacitor C 1 is by resistance R 1 electric discharge, discharge process reduces the current potential of 2 pin gradually, when being reduced to the current potential U3L of 3 pin, 1 pin current potential becomes the high level close to VCC, the current potential of 3 pin is because of the steep rising of the positive feedback effect of resistance R 2, its potential value is upgraded to and approximates resistance R 2//R4 and connect to the VCC dividing potential drop with resistance R 3, equal U3H, circuit enters above-mentioned capacitor C 1 process of charging again, so capacitor C 1 charge and discharge process moves in circles and constantly hockets, make mouth 1 pin of voltage comparison amplifier IC1-1 replace output logic 1 high level and logical zero low level, holding time of high level of output depended on the charging duration of capacitor C 1, holding time of output low level depended on the discharge time of capacitor C 1.Accompanying drawing 3 shows the mode chart of the input and output pin of voltage comparison amplifier IC1-1.Because the high level output of voltage comparison amplifier draws current capacity generally very weak, still opening Lou of having exported, and on plaing with R6 in figure, draws effect.
2. at timing circuit, make under the state of aerotron Q1 conducting: 1 pin of voltage comparison amplifier IC1-1 keeps output low level state, the oscillating circuit failure of oscillations.
The principle of work of timing circuit
After brake pedal is stepped on, brake pedal gang switch K1 closure, VCC powers on, and VCC is by 5 pairs of capacitor C of resistance R 2 charging, and capacitor C 2 left end current potentials increase along with the time and raise gradually, when the rated value that reaches stabilivolt DW1 adds the V of aerotron Q1
BEAfter value, aerotron Q1 becomes conducting by cut-off.For the vibration of controlling oscillating circuit whether, during aerotron Q1 cut-off, oscillating circuit allows vibration for the cut-off of aerotron Q1 and conducting state, and during aerotron Q1 conducting, the oscillating circuit failure of oscillations forces output logic 0 low level.The effect of diode D1 is to lift rear VCC dead electricity while becoming 0V when the brake pedal pine, capacitor C 2 can make zero capacitor C 2 left end current potentials by the D1 rapid discharge fast, when brake next time VCC power on that rear timing circuit can be from capacitor C 1 start charging to guarantee the charging duration of setting without state of charge, also guarantee the aerotron Q1 off condition time of setting, charging duration length is proportional to resistance R 5 and the definite time constant of capacitor C 2.
The principle of work of driving circuit
Oscillating circuit makes mouth 1 pin of voltage comparison amplifier IC1-1 replace output low level and high level makes positive-negative-positive aerotron aerotron Q2 alternate conduction and cut-off, coil alternate energisation and the outage of relay J 1, normal open switch J1-1 is alternately closed and disconnects, when normal open switch J1-1 is closed, stoplight stop lamp L1 and L2 light; When normal open switch J1-1 disconnects, because of the series connection resistance value R8 much larger with respect to the resistance of stoplight stop lamp L1 and L2, very little can not the lighting of the voltage that stoplight stop lamp L1 and L2 obtain electric current very low, that flow through, therefore the oscillatory process of oscillating circuit makes stoplight stop lamp alternately light and extinguish, stoplight stop lamp L1 and L2 flashing.After timing circuit has charged and has made aerotron Q1 conducting, the mouth 1 pin output low level of voltage comparison amplifier IC1-1, the coil of relay J 1 keeps "on" position, and normal open switch J1-1 remains closed, and stoplight stop lamp L1 and L2 keep Chang Liang.The effect of resistance R 7 is base currents of restriction aerotron Q2; The effect of diode D2 is afterflow, causes that from being energized to the coil current sudden change of when outage very large inverse electromotive force damages device aerotron Q2 for preventing relay J 1 coil, with diode D2 and coil formation discharge loop.
The principle of work of sound alarm circuit
When normal open switch J1-1 is closed, normally closed switch J1-2 disconnects, and buzzer phone BUZ1 does not ring.2. when normal open switch J1-1 disconnection, when normally closed switch J1-2 is closed, the buzzer phone BUZ1 whether sound depends on the 7 pin output states of voltage comparison amplifier IC1-2, during 7 pin output high level, buzzer phone BUZ1 does not ring, buzzer phone BUZ1 ring during 7 pin output low level, and the output state of 7 pin depends on whether stoplight stop lamp opens circuit or bad contact; If the shunt resistance value of stoplight stop lamp L1 and L2 is R
X, R
XConnect with resistance R 8 and the value of VCC dividing potential drop is to the current potential U6 of reverse input end 6 pin of voltage comparison amplifier IC-2, U6=VCC* (R
X/ (R
X+ R8)), R9 connects with VR1 and the value of VCC dividing potential drop is to the current potential U5 of 5 pin of input end in the same way of voltage comparison amplifier IC-2, U5=VCC* (R9/ (R9+VR1)), under normal circumstances, without under open filament or bad contact faulty condition, the resistance value of suitably regulating adjustable resistance VR1, make U5 be slightly larger than U6, and possess suitable surplus, cause resistance R 8, R9, VR1 and R even make when temperature traverse
XVariation the time, still can guarantee that U5 is greater than U6, the mouth 7 pin output high level of voltage comparison amplifier IC-2 like this, buzzer phone BUZ1 does not ring; Under open filament or bad contact faulty condition, the shunt resistance value R of stoplight stop lamp L1 and L2
XThan increasing under normal circumstances, U6 is R
XConnect with R8 large to the partial pressure value change of VCC, be greater than under normal circumstances and regulate the U5 set, the mouth 7 pin output low levels of voltage comparison amplifier IC-2, the alarm of buzzer phone BUZ1 ring by VR1.3. can release conclusion in conjunction with other functional module: the oscillatory process of oscillating circuit alternately disconnects with closed normally closed switch J1-2 by driving circuit, this functional module relatively whether filament is opened circuit by the two-way partial pressure value or bad contact is judged, as normally buzzer phone BUZ1 is loud, as abnormal BUZ1 will send interrupted buzzer.
The principle of comprehensive above four circuit modules is easy to find out: circuit has no special requirements to the value of power supply VCC voltage, as long as guarantee in the operating range of IC 1, the voltage range of general automotive battery is in the 12VDC left and right, reach as high as 15VDC, therefore be easy to choose the integrated electric pressure ratio than amplifier; There is not static working current in circuit, and after brake pedal gang switch K1 closure, VCC powers on, and the circuit working electric current can not be construed as limiting using setting time in the ms level, VCC outage after the brake pedal gang switch disconnects, and circuit is without quiescent dissipation; Circuit is in pure analogous circuit mode of operation, do not have the worry of the deadlock (though or dispose house dog, house dog needs time-delay reset will cause response not in time) of the intelligent controllers such as MCU, and functional reliability easily is guaranteed.
Flash brake lamp controller with fault warning function of the present invention has following beneficial effect: brake pedal is stepped on the rear brake lamp flicker, effectively remind the rear car driver, the time rear brake lamp that flicker is set becomes Chang Liang, prevents that normal time flicker from causing rear car driver visual fatigue; Controller also has stoplight stop lamp bad contact or open filament breakage alarming function; External line few (3) is convenient to install or repacking; Be beneficial to energy-conservation and extend the motorcar battery life-span without quiescent dissipation; Power line voltage Applicable scope is wide; Pure analog system easily guarantees the circuit working reliability.
The accompanying drawing explanation
Accompanying drawing 2 is detailed line graphs of circuit elements device of controller.
In Fig. 2, E1 means battery for powered vehicles, and K1 means the brake pedal gang switch that controlled by brake pedal, K1 closure after brake pedal is stepped on, and the complete pine of brake pedal is lifted rear K1 and disconnects, 20 contained dashed rectangle mean by resistance R 5, diode D1, stabilivolt DW1, aerotron Q1 and capacitor C 2 form timing circuit, 30 contained dashed rectangle mean by capacitor C 1, voltage ratio is than one group of voltage comparison amplifier IC1-1 of integrated chip IC1, resistance R 1, resistance R 2, resistance R 3, the oscillating circuit that resistance R 4 and resistance R 6 form, 40 contained dashed rectangle mean by resistance R 7, aerotron Q2, the normal open switch J1-1 of relay J 1 coil and relay J 1, the driving circuit that diode D2 and resistance R 8 form, 50 contained dashed rectangle mean another group voltage comparison amplifier IC1-2 than integrated chip IC1 by voltage ratio, resistance R 9, adjustable resistance VR1, the sound alarm circuit that relay J 1 normally closed switch J1-2 and buzzer phone BUZ1 form, whether timing circuit (20) is connected to oscillating circuit (30) by a NPN type aerotron and vibrates to control oscillating circuit (30), oscillating circuit (30) is connected to driving circuit (40) to control the light on and off of stoplight stop lamp L1 and L2 by positive-negative-positive aerotron Q1, the tapping that driving circuit (40) is connected with stoplight stop lamp L1 and L2 by resistance R 8 and relay normally closed switch two positions point are connected to sound alarm circuit (50), external 3 lines of brake lamp controller, it is the line in succession of positive source VCC and brake pedal gang switch K1, power cathode GND and automobile-use power supply are the connection lead and the connection lead of controlling output OUT and automotive vehicle brake lamp L1 and L2 of the negative pole of storage battery, it is storage battery that the working power of controller directly adopts self-propelled vehicle first wife power supply, by positive source VCC, power cathode GND holds input, an end of controlling output OUT and automobile first wife stoplight stop lamp L1 and L2 joins, the other end of first wife's stoplight stop lamp L1 and L2 is connected with power cathode.
Accompanying drawing 3 is leg signal mode charts of the integrated circuit in the oscillating circuit functional module in controller.
The specific embodiment
Below in conjunction with 2 pairs of technical schemes of the present invention of accompanying drawing, implement to further describe:
The technical scheme that circuit structure forms and concrete device connection mode is partly described as summary of the invention, it will not go into details herein, below enumerates a set of optional device model or device principal parameter, the 12V/20W that the parameter of supposing the stoplight stop lamp bulb is standard.
Voltage ratio is than integrated chip IC1: select LM393, this chip comprises two groups of voltage comparison amplifiers, but single power supply work, the voltage range of single power supply is 1V～18V, cover the normal working voltage of automotive battery fully, the pin numbering that uses this chip to carry out the circuit connection is fully with the pin numbering of IC1 in accompanying drawing 2;
Relay J 1: select comprise an open contact, normally closed contact and moving contact, there are 5 pins, coil drive voltage is that 12VDC, drive current are the relay that 28mA, contact parameter are 10A/28VDC;
Buzzer phone BUZ1 selects the auto-excitation type buzzer phone that driving voltage is 12VDC;
Potential device VR1 adopts permanent resistor 10K series connection (0～10K) scope adjustable resistance;
Below list remaining device model or device principal parameter, device comprises but not specified Parametric Representation relevant parameter has no special requirements, and for example resistance device is only indicated resistance but do not indicated power consumption and accuracy representing has no special requirements to power consumption and precision.
Aerotron Q1:9013
Aerotron Q2:9012
Diode D1, D2:IN4148
Stabilivolt DW1:6.2V
Resistance R 5:1M
Resistance R 6:4.3K
Resistance R 7:33K
Resistance R 8:500 Ω/0.5W
Resistance R 9:100 Ω
The term that above technical scheme is used, symbol, expression formula and example are not construed as limiting application of the present invention, just for convenience of explanation.
Claims (9)
1. the flash brake lamp controller with fault warning function, it is characterized in that brake lamp controller circuit (10) is by timing circuit (30), oscillating circuit (20), (50) four functional modules of driving circuit (40) and sound warning circuit form, whether timing circuit is connected to oscillating circuit by NPN type aerotron Q1 and vibrates to control oscillating circuit, oscillating circuit is connected to driving circuit to control the light on and off of stoplight stop lamp by positive-negative-positive aerotron Q2, tapping location point and relay J 1 normally closed switch location point that driving circuit is connected with stoplight stop lamp by resistance R 8 respectively, be connected to the sound alarm circuit, external 3 lines of brake lamp controller circuit (10), to 3 exits should be arranged, be respectively positive source VCC, power cathode GND and control output OUT, exit positive source VCC is connected to brake pedal gang switch K1, the other end of the brake pedal gang switch K1 motor-car B+ that picks, exit power cathode GND is connected to the negative pole of motorcar battery, exit is controlled output OUT and is connected to automotive vehicle brake lamp, another termination exit power cathode GND of automotive vehicle brake lamp, the working power of brake lamp controller circuit directly adopts motorcar battery.
2. a kind of flash brake lamp controller with fault warning function according to claim 1, it is characterized in that described timing circuit (30) is comprised of resistance R 5, diode D1, stabilivolt DW1, aerotron Q1 and capacitor C 2, wherein resistance R 5 is in parallel with diode D1, diode D1 negative electrode meets exit positive source VCC, and diode D1 anode connects stabilivolt DW1 negative electrode; Stabilivolt DW1 anode connects aerotron Q1 base stage; Capacitor C 2 one terminating diode D1 anodes and stabilivolt DW1 negative electrode, another termination exit power cathode GND; Aerotron Q1 emitter meets exit power cathode GND, and aerotron Q1 collecting electrode connects voltage ratio than 1 pin of integrated chip IC1, capacitor C 2 use polarity free capacitors or polar capacitor is arranged.
3. a kind of flash brake lamp controller with fault warning function according to claim 1, it is characterized in that described oscillating circuit (20) is comprised of than one group of voltage comparison amplifier IC1-1, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 6 of integrated chip IC1 capacitor C 1, voltage ratio, capacitor C 1 one termination exit power cathode GND wherein, another termination voltage ratio is than 2 pin of integrated chip IC1; Resistance R 1 one termination voltages are 2 pin of integrated chip IC1 relatively, and another termination voltage ratio is than 1 pin of integrated chip IC1; Resistance R 2 one termination voltages are 1 pin of integrated chip IC1 relatively, and another termination voltage ratio is than 3 pin of integrated chip IC1; Resistance R 3 one termination exit power cathode GND, another termination voltage ratio is than 3 pin of integrated chip IC1; Resistance R 4 one termination voltages are 3 pin of integrated chip IC1 relatively, another termination exit positive source VCC; Resistance R 6 one termination voltages are 1 pin of integrated chip IC1 relatively, another termination exit positive source VCC, capacitor C 1 use polarity free capacitor or polar capacitor is arranged.
4. according to the described a kind of flash brake lamp controller with fault warning function of claim 2 or 3, it is characterized in that described voltage ratio includes two groups or four groups of voltage comparison amplifiers than integrated chip IC1.
5. according to the described a kind of flash brake lamp controller with fault warning function of claim 2 or 3, while it is characterized in that described voltage ratio contains two groups of voltage comparison amplifiers than integrated chip IC1, voltage ratio means respectively input end, reverse input end and mouth in the same way than 3 pin of integrated chip IC1,2 pin and 1 pin, forms one group of voltage comparison amplifier IC1-1; Voltage ratio means respectively input end, reverse input end and mouth in the same way than 5 pin of integrated chip IC1,6 pin and 7 pin, forms another group voltage comparison amplifier IC1-2; Voltage ratio means than 8 pin of integrated chip IC1 and 4 pin that respectively voltage ratio is than the positive source of integrated chip and power cathode input end.
6. a kind of flash brake lamp controller with fault warning function according to claim 1, it is characterized in that described driving circuit (40) is comprised of normal open switch J1-1, diode D2 and the resistance R 8 of resistance R 7, aerotron Q2, relay J 1 coil and relay J 1, wherein the voltage ratio in resistance R 7 one termination oscillating circuits (20) is than 1 pin of integrated chip IC1, another termination aerotron Q2 base stage; Aerotron Q2 emitter meets exit positive source VCC; The coil winding of relay J 1 is in parallel with diode D2, and diode D2 negative electrode connects aerotron Q2 collecting electrode, and diode D2 anode meets exit power cathode GND; Resistance R 8 is in parallel with the normal open switch J1-1 of relay J 1, and relay J 1 moving contact meets exit positive source VCC, open contact connect in oscillating circuit (20) voltage ratio than 6 pin of integrated chip IC1 and be connected to exit and control output OUT.
7. according to the described a kind of flash brake lamp controller with fault warning function of claim 1 or 6, it is characterized in that described driving circuit repeat circuit J1 comprises an open contact, a normally closed contact and a moving contact, moving contact and open contact form normal open switch J1-1, and moving contact and normally closed contact form normally closed switch J1-2.
8. a kind of flash brake lamp controller with fault warning function according to claim 5, it is characterized in that described sound alarm circuit (50) is comprised of than relay J 1 normally closed switch J1-2 and buzzer phone BUZ1 in another group voltage comparison amplifier IC1-2 of integrated chip IC1, resistance R 9, adjustable resistance VR1, driving circuit (40) voltage ratio, resistance R 9 one termination exit power cathode GND wherein, the voltage ratio in another termination oscillating circuit (20) is than 5 pin of integrated chip IC1; Voltage ratio in VR1 mono-termination oscillating circuit (20) is than 5 pin of integrated chip IC1, another termination exit positive source VCC; The normally closed contact of the relay J 1 in driving circuit (40) connects the positive pole of buzzer phone BUZ1, and the moving contact of the relay J 1 in driving circuit (40) meets exit positive source VCC; The negative pole of buzzer phone BUZ1 connects voltage ratio in oscillating circuit (20) than 7 pin of integrated chip IC1; Voltage ratio in oscillating circuit (20) meets exit positive source VCC than 8 pin of integrated chip IC1, and the voltage ratio in oscillating circuit (20) meets exit power cathode GND than 4 pin of integrated chip IC1.
9. the flash brake lamp controller with fault warning function according to claim 8 is characterized in that: described adjustable resistance VR1 can also substitute with adjustable resistance of a fixed value resistance series connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101202873A CN101823459B (en) | 2010-03-09 | 2010-03-09 | Flash-type brake lamp controller with fault warning function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101202873A CN101823459B (en) | 2010-03-09 | 2010-03-09 | Flash-type brake lamp controller with fault warning function |
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| CN101823459A CN101823459A (en) | 2010-09-08 |
| CN101823459B true CN101823459B (en) | 2013-12-04 |
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| CN2010101202873A Expired - Fee Related CN101823459B (en) | 2010-03-09 | 2010-03-09 | Flash-type brake lamp controller with fault warning function |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602336A (en) * | 2012-03-23 | 2012-07-25 | 成都玺汇科技有限公司 | Stoplight monitor for automobiles |
| CN102680169A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Acousto-optical pressure early warning device |
| CN103738242B (en) * | 2014-01-10 | 2016-04-06 | 湖北省朗灵科技有限公司 | Automotive brake light system fault prompting apparatus |
| CN104048728A (en) * | 2014-06-27 | 2014-09-17 | 西安微纳传感器研究所有限公司 | Sound-light alarm circuit |
| CN106965743B (en) * | 2017-05-02 | 2023-07-28 | 山东五征集团有限公司 | Brake lamp control device and control method applied to hydrostatic self-propelled agricultural machinery |
| CN111377015B (en) * | 2018-12-27 | 2024-05-31 | 南京懂玫驱动技术有限公司 | Braking circuit of electric bicycle |
| US10926695B1 (en) * | 2020-02-25 | 2021-02-23 | Stacey Johnson | Automotive safety brake light |
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