CN102602332B - The deceleration intensity of vehicle and the real-time display system of deceleration value - Google Patents
The deceleration intensity of vehicle and the real-time display system of deceleration value Download PDFInfo
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- CN102602332B CN102602332B CN201210086076.1A CN201210086076A CN102602332B CN 102602332 B CN102602332 B CN 102602332B CN 201210086076 A CN201210086076 A CN 201210086076A CN 102602332 B CN102602332 B CN 102602332B
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Abstract
The deceleration intensity of vehicle and the real-time display system of deceleration value, belong to the device measured and show car retardation intensity.Signal acquiring system of the present invention comprises control chip, differential transformation type deceleration/decel sensor, and resistance-type acceleration pedal modulate circuit; Signal display system comprises the LED taillight array of the current deceleration/decel intensity of display and the charactron of display front deceleration angle value, and control chip reset switch is S1.Utilize the brake switch voltage signal of vehicle that control chip is resetted further.The present invention can Real-time Collection front deceleration degree, lights taillight and charactron, warns and understands vehicle deceleration situation with rear vehicle and chaufeur, have superiority when high speed traveling or night travel.
Description
Technical field
The invention belongs to the device measured and show car retardation intensity.
Background technology
During high vehicle speeds, if unexpected release the gas pedal, because vehicle is subject to windage, rolling frictional resistance impact, vehicle is caused to produce deceleration/decel.Car brakeing lamp system is in the market nearly all directly controlled by brake switch uniquely.Connect stop lamp switch when stepping on brake pedal, brake lamp is lighted; When loosen the brake, brake lamp extinguishes.It is longer that the pin of chaufeur leaves from acceleration pedal the time of stepping on needed for brake pedal of replacing, and the brake lamp warning time is slower.This system can only represent the state of vehicle qualitatively when braking, can not judge whether front truck is emergency braking, or release the gas pedal and cause car retardation, especially for high speed traveling or driving in night, clearly can not judge that front truck chaufeur is the intention of braking or inertia driving with rear vehicle.
Summary of the invention
The object of the invention is the display system that a kind of vehicle deceleration is provided based on deceleration/decel sensor and micro controller system, when making chaufeur release the gas pedal, this display system gathers front deceleration degree immediately, and light deceleration intensity display taillight and be arranged on deceleration/decel charactron in car on instrument carrier panel, with warning in advance with rear vehicle with inform this car chaufeur deceleration/decel situation.
The object of the invention realizes by with under type:
Comprise signal acquiring system and signal display system, and resistance-type acceleration pedal modulate circuit, it is characterized in that:
(1) signal acquiring system comprises the differential transformation type deceleration/decel sensor (U2) of MC68HC908GP32 control chip (U3), SCA610 series, wherein:
Differential transformation type deceleration/decel sensor (U2) is arranged in vehicle, and is parallel to vehicle forward direction position, and its voltage output end is connected with the end PTB7 of control chip (U3);
Resistance-type acceleration pedal modulate circuit is connected with the sliding end (3) of slide rheostat R19 by coupled circuit JP4 by resistance-type acceleration pedal induced voltage, the voltage that slide rheostat R19 dividing potential drop exports is as the input end signal of time base circuit U5, and the output signal of time base circuit U4 is connected with the input end PTA0 of control chip (U3) through phase inverter U6B;
(2) signal display system comprises the LED taillight of the current deceleration/decel intensity of display and the seven segment digital tubes of display front deceleration angle value, wherein:
The mouth PTC of control chip (U3) is connected with LED taillight;
Port PTB0 ~ the PTB6 of control chip (U3) is connected with the seven segment digital tubes be arranged in car on instrument carrier panel as the mouth of control chip (U3);
(3) control chip (U3) reset switch is S1, manually the deceleration/decel intensity display lamp of reset controlling system and charactron deceleration value back to zero, for the signal of Resurvey and display front deceleration degree sensor is ready;
(4) for above-mentioned (2), the seven segment digital tubes of display front deceleration angle value is arranged in car on instrument carrier panel, and the unit of the deceleration value of display is m/s
2; LED taillight is 5 LED array, and 5 LED array are corresponding in turn to 1 ~ 5 LED taillight in parallel, and the mouth PTC0 ~ PTC4 of control chip (U3) is connected with 5 LED array respectively by current driving circuit;
The deceleration value of numeral method and the number of taillight bright light as shown in the table:
Described real-time display system is: the d. c. voltage signal of the brake switch of vehicle is connected with the fixed end of the slide rheostat R20 of resistance pressure-dividing network R9 ~ R18 by coupled circuit JP3, and using slide rheostat R20 sliding end as time base circuit U4 incoming signal, the output signal of time base circuit U4 is connected with the input end PTA1 of control chip (U3) through phase inverter U6A, resets with the LED taillight and deceleration value seven segment digital tubes that control deceleration/decel intensity.
Compared with common brake lamp, the outstanding technique effect that the present invention has is:
1, the present invention just can gather front deceleration degree immediately at chaufeur release the gas pedal Time Controller, and light deceleration/decel intensity display taillight, deceleration/decel taillight shifts to an earlier date 0.1 ~ 1.0 second to be lighted and can play the effect of warning in advance with rear vehicle, especially has superiority when high speed traveling or night travel.
2, the deceleration value charactron unit be installed in instrument carrier panel is m/s
2(meter per second
2), the current deceleration value of this car being shown in real time, be not only convenient to the deceleration/decel situation of the clear and definite vehicle of chaufeur, being also convenient to detect motor vehicle braking system when keeping in repair.
3, confirmed by test: Circuits System is very sensitive to automobile external interference, easily causes the misfeed of data.Compare with other control chip, the crystal oscillator frequency of MC68HC908GP32 is lower (32.768KHZ), greatly can reduce the interference of crystal oscillator radiated power to real-time display system, improves system reliability.And with the external AD of other control chip and parallel turn the transmission of serial chip real time data and compare, the built-in AD of this control chip, decreases error, and improves the real-time response performance of circuit.
The present invention adopts the acceleration pick-up of SCA610 series, and this sensor not only can the variable quantity △ a of induction acceleration, and can respond to even deceleration/decel-a.The sensor of other (as SD series) then can only the variable quantity △ a of induction acceleration, even deceleration/decel-a in the braking deceleration process of automobile cannot be responded to, cause rate of braking taillight can carry out extinguishing in the process of even deceleration at automobile, can not better play warning function.
4, the present invention carries out designing and making according to the actual operating conditions of automobile, and completes real train test on JinBeiHaiShi utility van.
Accompanying drawing explanation
Fig. 1 is the schematic circuit diagram that the present invention is divided into 9 parts.In figure, Part1 is deceleration/decel intensity display taillight array; Part2 is deceleration value display charactron; Part3 is brake switch signal modulate circuit; Part4 is acceleration pedal signal conditioning circuit; Part5 has deceleration/decel sensor U2; Part6 is controller U3; Part7 is download program module; Part8 is driving circuit; Part9 is 5V DC power supplier.
Fig. 2 is program flow diagram of the present invention.In figure, ECU is controller U3.
Be described further below in conjunction with accompanying drawing.Following examples comprise but do not limit scope.
Detailed description of the invention
Embodiment 1:
As Fig. 1, comprise signal acquiring system and signal display system,
(1) signal acquiring system comprises MC68HC908GP32 control chip U3, the differential transformation type deceleration/decel sensor U2 of SCA610 series, and resistance-type acceleration pedal modulate circuit Part4, wherein:
Differential transformation type deceleration/decel sensor U2 is arranged in vehicle, shakes less and be parallel to vehicle forward direction position, its voltage output end is connected with the end PTB7 of control chip U3, and control chip U3 converts the voltage signal of input to the digital signal corresponding with deceleration value by the A/D module of its inside.
As Fig. 1, resistance-type acceleration pedal signal conditioning circuit Part4, resistance-type acceleration pedal induced voltage is drawn from its sensor, be connected with the sliding end 3 of slide rheostat R19 by coupled circuit JP4, the voltage that slide rheostat R19 dividing potential drop exports is as the input end TRIG energizing signal of NE555P time base circuit U5, the output signal OUT of time base circuit U4 is 0 ~ 5V digital voltage, connects phase inverter U6B input end 3, is connected with the input end PTA0 of control chip U3 through phase inverter U6B mouth 4.
(2) signal display system comprises the LED taillight of the current deceleration/decel intensity of display and the seven segment digital tubes of display front deceleration angle value, wherein:
The mouth PTC of control chip U3 is connected with LED taillight;
Port PTB0 ~ the PTB6 of control chip U3 is connected with the seven segment digital tubes be arranged in car on instrument carrier panel as the mouth of control chip U3.Be arranged on the power supply connection control switch S 2 of the deceleration/decel display charactron in car in instrument carrier panel.
Control chip U3 reset switch is S1, manually the deceleration/decel intensity display lamp of reset controlling system and charactron deceleration value back to zero, for the signal of Resurvey and display front deceleration degree sensor is ready.
As Fig. 2, when the pin of chaufeur leaves acceleration pedal, acceleration pedal unlock signal enters control chip U3, and control chip U3 is opened, and starts collection deceleration/decel sensor Part5 signal, and deceleration/decel signal holds V from deceleration/decel sensor Part5
oUTexport, connection control chip U3, as calculated, control deceleration/decel intensity display taillight Part1 and deceleration value display charactron Part2 through driving circuit Part8.Before chaufeur does not step on brake pedal, display deceleration/decel intensity in real time, thus warning is with rear vehicle.
Embodiment 2:
As Part3 in Fig. 1, when the pin of chaufeur steps on brake pedal, the d. c. voltage signal of drawing from the brake switch of vehicle is connected with the fixed end 1 of the slide rheostat R20 of resistance pressure-dividing network R9 ~ R18 by coupled circuit JP3, and using slide rheostat R20 sliding end 3 as time base circuit U4 incoming signal, voltage after regulating is sent into time base circuit U4 end TRIG by R20 sliding end 3, as the incoming signal of rest-set flip-flop in time base circuit U4, brake switch analog voltage is adjusted to 0 ~ 5V digital voltage, the mouth 3 of time base circuit U4 is connected with phase inverter U6A input end 1, be connected with the input end PTA1 of control chip U3 through phase inverter U6A mouth 2, using input end PTA1 signal as the deceleration/decel intensity display lamp of system and charactron deceleration value reset signal, refresh display data, for the signal of Resurvey and display front deceleration degree sensor is ready.
All the other contents of the present embodiment are identical with embodiment 1.
Embodiment 3:
As embodiment 1, control chip U3 receives resistance-type acceleration pedal modulate circuit Part4 output signal, deceleration/decel sensor U2 output signal respectively; Or receive resistance-type acceleration pedal modulate circuit Part4 output signal, deceleration/decel sensor U2 output signal respectively as embodiment 2 control chip U3, and the output signal of brake switch signal modulate circuit Part3.
Control chip U3 converts the deceleration/decel sensor U2 voltage signal of input to the digital signal corresponding with deceleration value by the A/D module of its inside, held by the PTC of controller and control deceleration/decel intensity display LED taillight Part1, and hold control deceleration/decel strength rating charactron Part2 by the PTB of controller.
The unit being arranged on the deceleration value of the seven segment digital tubes display in car on instrument carrier panel is m/s
2, deceleration value is as shown in the table.Such as, numerical monitor 2, then represent: 2m/s
2≤ front deceleration angle value≤3m/s
2.
LED taillight is 5 LED array, and LED is red; 5 LED array are corresponding in turn to 1 ~ 5 LED taillight in parallel, and the mouth PTC0 ~ PTC4 of control chip U3 is connected with 5 LED array respectively by current driving circuit;
The deceleration value of numeral method and the number of taillight bright light as shown in the table:
。
Except above content, all the other contents of the present embodiment are identical with embodiment 1 or 2.
Claims (2)
1. the deceleration intensity of vehicle and the real-time display system of deceleration value, comprise signal acquiring system and signal display system, and resistance-type acceleration pedal modulate circuit, it is characterized in that:
(1) signal acquiring system comprises the differential transformation type deceleration/decel sensor (U2) of MC68HC908GP32 control chip (U3), SCA610 series, wherein:
Differential transformation type deceleration/decel sensor (U2) is arranged in vehicle, and is parallel to vehicle forward direction position, and its voltage output end is connected with the end PTB7 of control chip (U3);
Resistance-type acceleration pedal modulate circuit is connected with the sliding end (3) of slide rheostat R19 by coupled circuit JP4 by resistance-type acceleration pedal induced voltage, the voltage that slide rheostat R19 dividing potential drop exports is as the input end signal of time base circuit U5, and the output signal of time base circuit U4 is connected with the input end PTA0 of control chip (U3) through phase inverter U6B;
(2) signal display system comprises the LED taillight of the current deceleration/decel intensity of display and the seven segment digital tubes of display front deceleration angle value, wherein:
The mouth PTC of control chip (U3) is connected with LED taillight;
Port PTB0 ~ the PTB6 of control chip (U3) is connected with the seven segment digital tubes be arranged in car on instrument carrier panel as the mouth of control chip (U3);
(3) control chip (U3) reset switch is S1, manually the deceleration/decel intensity display lamp of reset controlling system and charactron deceleration value back to zero, for the signal of Resurvey and display front deceleration degree sensor is ready;
(4) for above-mentioned (2), the seven segment digital tubes of display front deceleration angle value is arranged in car on instrument carrier panel, and the unit of the deceleration value of display is m/s
2; LED taillight is 5 LED array, and 5 LED array are corresponding in turn to 1 ~ 5 LED taillight in parallel, and the mouth PTC0 ~ PTC4 of control chip (U3) is connected with 5 LED array respectively by current driving circuit;
The deceleration value of numeral method and the number of taillight bright light as shown in the table:
。
2. real-time display system according to claim 1, it is characterized in that the d. c. voltage signal of the brake switch of vehicle is connected with the fixed end of the slide rheostat R20 of resistance pressure-dividing network R9 ~ R18 by coupled circuit JP3, and using slide rheostat R20 sliding end as time base circuit U4 incoming signal, the output signal of time base circuit U4 is connected with the input end PTA1 of control chip (U3) through phase inverter U6A, resets with the LED taillight and deceleration value seven segment digital tubes that control deceleration/decel intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210086076.1A CN102602332B (en) | 2012-03-28 | 2012-03-28 | The deceleration intensity of vehicle and the real-time display system of deceleration value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210086076.1A CN102602332B (en) | 2012-03-28 | 2012-03-28 | The deceleration intensity of vehicle and the real-time display system of deceleration value |
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| CN102602332A CN102602332A (en) | 2012-07-25 |
| CN102602332B true CN102602332B (en) | 2015-09-02 |
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| CN201210086076.1A Expired - Fee Related CN102602332B (en) | 2012-03-28 | 2012-03-28 | The deceleration intensity of vehicle and the real-time display system of deceleration value |
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| CN112373443B (en) * | 2020-11-26 | 2022-12-20 | 西南林业大学 | Brake equipment and brake method for vehicle speed reducing parachute |
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| JPH09318639A (en) * | 1996-05-28 | 1997-12-12 | Yazaki Corp | Speed display system |
| JP2000016168A (en) * | 1998-07-03 | 2000-01-18 | Takayanagi Kenkyusho:Kk | Deceleration display device |
| CN2732548Y (en) * | 2004-06-10 | 2005-10-12 | 比亚迪股份有限公司 | Vehicle speed-changing indicating device |
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| CN201009806Y (en) * | 2007-01-26 | 2008-01-23 | 桑方明 | Automobile back lamp |
| CN201201551Y (en) * | 2008-03-10 | 2009-03-04 | 上海世科嘉车辆技术研发有限公司 | Stepless sectional type high braking lamp |
| CN201201550Y (en) * | 2008-05-09 | 2009-03-04 | 长安大学 | Brake signal display device based on automobile ABS system |
| CN201380790Y (en) * | 2009-04-20 | 2010-01-13 | 杨舒 | Automotive vehicle electric control brake intensity display tail lamp |
| CN202573975U (en) * | 2012-03-30 | 2012-12-05 | 赵龙庆 | System for displaying deceleration intensity and deceleration value of vehicle in real time |
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2012
- 2012-03-28 CN CN201210086076.1A patent/CN102602332B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0379762A1 (en) * | 1989-01-24 | 1990-08-01 | Cotron Corporation | Real time speed display apparatus |
| CN1145673A (en) * | 1994-04-01 | 1997-03-19 | 亚细亚自动车工业(株) | Device for controlling accelerator pedal of vehicle |
| JPH09318639A (en) * | 1996-05-28 | 1997-12-12 | Yazaki Corp | Speed display system |
| JP2000016168A (en) * | 1998-07-03 | 2000-01-18 | Takayanagi Kenkyusho:Kk | Deceleration display device |
| CN2732548Y (en) * | 2004-06-10 | 2005-10-12 | 比亚迪股份有限公司 | Vehicle speed-changing indicating device |
| CN1868782A (en) * | 2005-05-27 | 2006-11-29 | 刘苏晋 | Brake prewarning device |
| CN2919257Y (en) * | 2006-05-22 | 2007-07-04 | 北京万里科济数控技术有限公司 | Urgent prompting system for preventing vehicles collision |
| CN201009806Y (en) * | 2007-01-26 | 2008-01-23 | 桑方明 | Automobile back lamp |
| CN201201551Y (en) * | 2008-03-10 | 2009-03-04 | 上海世科嘉车辆技术研发有限公司 | Stepless sectional type high braking lamp |
| CN201201550Y (en) * | 2008-05-09 | 2009-03-04 | 长安大学 | Brake signal display device based on automobile ABS system |
| CN201380790Y (en) * | 2009-04-20 | 2010-01-13 | 杨舒 | Automotive vehicle electric control brake intensity display tail lamp |
| CN202573975U (en) * | 2012-03-30 | 2012-12-05 | 赵龙庆 | System for displaying deceleration intensity and deceleration value of vehicle in real time |
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