CN102602332A - Real-time display system for deceleration strength and deceleration value of vehicle - Google Patents
Real-time display system for deceleration strength and deceleration value of vehicle Download PDFInfo
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- CN102602332A CN102602332A CN2012100860761A CN201210086076A CN102602332A CN 102602332 A CN102602332 A CN 102602332A CN 2012100860761 A CN2012100860761 A CN 2012100860761A CN 201210086076 A CN201210086076 A CN 201210086076A CN 102602332 A CN102602332 A CN 102602332A
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- deceleration
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Abstract
A real-time display system for deceleration strength and a deceleration value of a vehicle belongs to devices for measuring and displaying deceleration strength of vehicles. A signal acquisition system of the real-time display system comprises a control chip, a differential variable-pressure speed sensor and a resistive accelerator pedal adjusting circuit. A signal display system comprises an LED tail lamp array and a nixie tube, wherein the LED tail lamp array displays current deceleration strength, and the nixie tube displays current the deceleration value. A control chip reset switch S1 is further provided. Further, the control chip can be reset by means of brake switch voltage signals of the vehicle. Using the real-time display system can acquire current deceleration speed in real time to light up tail lamps and the nixie tube so as to alarm vehicles and drivers behind to know the vehicle deceleration condition, and the real-time display system is advantageous in high-speed driving or night driving.
Description
Technical field
The invention belongs to the device of measuring and showing car retardation intensity.
Background technology
During high vehicle speeds, if unexpected release the gas pedal because vehicle receives windage, rolling frictional resistance influence, causes vehicle to produce deceleration/decel.Car brakeing lamp system in the market nearly all is uniquely through the brake switch direct control.When stepping on brake pedal, connect stop lamp switch, brake lamp is lighted; When loosen the brake, brake lamp extinguishes.It is longer that the pin of chaufeur leaves transposition required time of brake pedal of stepping on from acceleration pedal, and the brake lamp caution time later.This system can only represent the state of vehicle qualitatively at glancing impact; Can not judge whether front truck is emergency braking; Still release the gas pedal and cause vehicles is slowed down; Especially for high speed traveling or driving in night, vehicle can not judge clearly that the front truck chaufeur is the intention of braking or inertia driving subsequently.
Summary of the invention
The objective of the invention is to provide a kind of display system of vehicle deceleration based on deceleration/decel sensor and micro controller system; This display system is gathered current deceleration/decel immediately when making the chaufeur release the gas pedal; And light deceleration intensity and show taillight and be installed in the deceleration/decel charactron on the instrument carrier panel in the car, with warning in advance subsequently vehicle with inform this car chaufeur deceleration/decel situation.
The object of the invention is realized by following mode:
Comprise signal acquiring system and signal display system, it is characterized in that:
(1) signal acquiring system comprises MC68HC908GP32 control chip U3, the differential pressure swing type deceleration/decel sensor U2 of SCA610 series, and resistance-type acceleration pedal modulate circuit, wherein:
Differential pressure swing type deceleration/decel sensor U2 is installed in the vehicle, and is parallel to the 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 that the induced voltage of resistance-type acceleration pedal is connected with the sliding end 3 of slide rheostat R19 through coupled circuit JP4; The voltage of slide rheostat R19 dividing potential drop output 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 LED taillight that shows current deceleration/decel intensity and the seven segment digital tubes that shows current deceleration value, wherein:
The mouth PTC of controller U3 is connected with the LED taillight;
Port PTB0 ~ PTB6 of controller U3 as the mouth of control chip U3 be installed in car in seven segment digital tubes on the instrument carrier panel be connected.
(3) control chip U3 reset switch is S1, returns zero through the deceleration/decel intensity display lamp and the charactron deceleration value of hand reset control system, for gathering again and showing that the signal of current deceleration/decel sensor is ready.
The d. c. voltage signal of described vehicle braked switch is connected with the fixed end of the slide rheostat R20 of resistance pressure-dividing network R9 ~ R18 through coupled circuit JP3; And with 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.
The described unit that is installed in the deceleration value that the seven segment digital tubes on the instrument carrier panel shows in the car is m/s
2The LED taillight is 5 led array, and 5 led array are respectively successively to there being the LED taillight of 1 ~ 5 parallel connection, and mouth PTC0 ~ PTC4 of control chip U3 is connected with 5 led array respectively through current driving circuit;
The deceleration value that charactron shows and the number of the bright lamp of taillight are as shown in the table:
| Deceleration value | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | >;9 |
| LED lights line number | 0 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 5 |
| The charactron displayed value | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |
The described power supply that is installed in the demonstration of the deceleration/decel in instrument carrier panel charactron in the car connects master cock S2.
Compare with common brake lamp, the outstanding technique effect that the present invention has is:
1, the present invention's controller when the chaufeur release the gas pedal just can be gathered current deceleration/decel immediately; And light deceleration/decel intensity and show taillight; The deceleration/decel taillight was lighted in advance in 0.1 ~ 1.0 second can play the warning in advance effect of vehicle subsequently, especially when high speed traveling or night travel, has superiority.
2, the deceleration value charactron unit that is installed in the instrument carrier panel is m/s
2(meter per second
2), can show the deceleration value that this car is current in real time, not only be convenient to the deceleration/decel situation of the clear and definite vehicle of chaufeur, also be convenient to when maintenance, motor vehicle braking system detected.
3, confirm through test: Circuits System is disturbed very sensitive to automobile external, be prone to cause the misfeed of data.Compare with other control chip, the crystal oscillator frequency of MC68HC908GP32 lower (32.768KHZ) can greatly 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 change the transmission of serial chip real time data relatively, the built-in AD of this control chip has reduced error, and has improved the real-time response performance of circuit.
The present invention adopts the acceleration pick-up of SCA610 series, the variable quantity △ a that this sensor not only can induction acceleration, and can respond to and spare deceleration/decel-a.The sensor of other (like SD series) then can only induction acceleration variable quantity △ a; Can't respond to the even deceleration/decel-a in the braking deceleration process of automobile; Cause the rate of braking taillight to spare in the process of slowing down and extinguish, can better not bring into play warning function at automobile.
4, the present invention designs and makes according to the actual operating conditions of automobile, and on the JinBeiHaiShi utility van, has accomplished real train test.
Below in conjunction with accompanying drawing the present invention is further specified.
Description of drawings
Fig. 1 is divided into the schematic circuit diagram of 9 parts for the present invention.Among the figure, Part1 shows the taillight array for deceleration/decel intensity; Part2 is that deceleration value shows charactron; Part3 is the brake switch signal conditioning circuit; Part4 is the acceleration pedal signal conditioning circuit; Part5 has deceleration/decel sensor U2; Part6 is controller U3; Part7 is the program download module; Part8 is a driving circuit; Part9 is the 5V DC power supplier.
Fig. 2 is a program flow diagram of the present invention.Among the figure, ECU is controller U3.
Further specify below in conjunction with accompanying drawing.Following examples comprise but do not limit protection domain of the present invention.
The specific embodiment
Embodiment 1:
Like Fig. 1, comprise signal acquiring system and signal display system,
(1) signal acquiring system comprises MC68HC908GP32 control chip U3, the differential pressure swing type deceleration/decel sensor U2 of SCA610 series, and resistance-type acceleration pedal modulate circuit Part4, wherein:
Differential pressure swing type deceleration/decel sensor U2 is installed in the vehicle, vibrations are less and be parallel to the vehicle forward direction position; Its voltage output end is connected with the end PTB7 of control chip U3, and control chip U3 converts to and the cooresponding digital signal of deceleration value through the voltage signal of its in-to-in AD module with input.
Like Fig. 1; Resistance-type acceleration pedal signal conditioning circuit Part4 draws resistance-type acceleration pedal induced voltage from its sensor, be connected with the sliding end 3 of slide rheostat R19 through coupled circuit JP4; The voltage of slide rheostat R19 dividing potential drop output 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 LED taillight that shows current deceleration/decel intensity and the seven segment digital tubes that shows current deceleration value, wherein:
The mouth PTC of control chip U3 is connected with the LED taillight;
Port PTB0 ~ PTB6 of control chip U3 as the mouth of control chip U3 be installed in car in seven segment digital tubes on the instrument carrier panel be connected.The power supply that is installed in the demonstration of the deceleration/decel in instrument carrier panel charactron in the car connects master cock S2.
Control chip U3 reset switch is S1, returns zero through the deceleration/decel intensity display lamp and the charactron deceleration value of hand reset control system, for gathering again and showing that the signal of current deceleration/decel sensor is ready.
Like Fig. 2, when the pin of chaufeur left acceleration pedal, acceleration pedal unlock signal control of access chip U3 opened control chip U3, and started collection deceleration/decel sensor Part5 signal, and the deceleration/decel signal is from deceleration/decel sensor Part5 end V
OUTOutput connects control chip U3, after calculating, shows that through driving circuit Part8 control deceleration/decel intensity taillight Part1 and deceleration value show charactron Part2.Before chaufeur is not stepped on brake pedal, show deceleration/decel intensity in real time, thereby warn vehicle subsequently.
Embodiment 2:
Like Part3 among Fig. 1; When the pin of chaufeur is stepped on brake pedal; The d. c. voltage signal of drawing from the vehicle braked switch is connected with the fixed end 1 of the slide rheostat R20 of resistance pressure-dividing network R9 ~ R18 through coupled circuit JP3; And with slide rheostat R20 sliding end 3 as time base circuit U4 incoming signal, the voltage after regulating is sent into time base circuit U4 end TRIG through R20 sliding end 3, as the incoming signal of rest-set flip-flop among the time base circuit U4; The brake switch aanalogvoltage is adjusted to 0～5V digital voltage; The mouth 3 of time base circuit U4 is connected with phase inverter U6A input end 1, is connected with the input end PTA1 of control chip U3 through phase inverter U6A mouth 2, with deceleration/decel intensity display lamp and the charactron deceleration value reset signal of input end PTA1 signal as system; Refresh display data, for gathering again and showing that the signal of current deceleration/decel sensor is ready.
All the other contents of present embodiment are identical with embodiment 1.
Embodiment 3:
Like 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, and the output signal of brake switch signal conditioning circuit Part3 like embodiment 2 control chip U3.
Control chip U3 converts to and the cooresponding digital signal of deceleration value through the deceleration/decel sensor U2 voltage signal of its in-to-in AD module with input; PTC end control deceleration/decel intensity by controller shows LED taillight Part1, and controls deceleration/decel strength rating charactron Part2 by the PTB end of controller.
The unit that is installed in the deceleration value that the seven segment digital tubes on the instrument carrier panel shows in the car is m/s
2, deceleration value is as shown in the table.For example, numeric display 2, then expression: 2 m/s
2≤current deceleration value≤3 m/s
2
The LED taillight is 5 led array, and the LED lamp is red; 5 led array are respectively successively to there being the LED taillight of 1 ~ 5 parallel connection, and mouth PTC0 ~ PTC4 of control chip U3 is connected with 5 led array respectively through current driving circuit;
The deceleration value that charactron shows and the number of the bright lamp of taillight are as shown in the table:
| Deceleration value | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | >;9 |
| LED lights line number | 0 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 5 |
| The charactron displayed value | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |
Except that above content, all the other contents of present embodiment are identical with embodiment 1 or 2.
Claims (5)
1. the deceleration intensity of vehicle and the real-time display system of deceleration value comprise signal acquiring system and signal display system, it is characterized in that:
(1) signal acquiring system comprises MC68HC908GP32 control chip (U3), the differential pressure swing type deceleration/decel sensor (U2) of SCA610 series, and resistance-type acceleration pedal modulate circuit, wherein:
Differential pressure swing type deceleration/decel sensor (U2) is installed in the vehicle, and is parallel to the 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 that resistance-type acceleration pedal induced voltage is connected with the sliding end 3 of slide rheostat (R19) through coupled circuit (JP4); The voltage of slide rheostat (R19) dividing potential drop output is as the input end signal of time base circuit (U5), and the output signal of time base circuit (U4) is connected through the input end PTA0 of phase inverter (U6B) with control chip (U3);
(2) signal display system comprises LED taillight that shows current deceleration/decel intensity and the seven segment digital tubes that shows current deceleration value, wherein:
The mouth PTC of controller (U3) is connected with the LED taillight through driving circuit (Part8);
Port PTB0 ~ the PTB6 of controller (U3) as the mouth of control chip (U3) be installed in car in seven segment digital tubes on the instrument carrier panel be connected;
(3) control chip (U3) reset switch is S1, returns zero through the deceleration/decel intensity display lamp and the charactron deceleration value of hand reset control system, for gathering again and showing that the signal of current deceleration/decel sensor is ready.
2. display system according to claim 1; The d. c. voltage signal that it is characterized in that the vehicle braked switch is connected with the fixed end of the slide rheostat (R20) of resistance pressure-dividing network (R9) ~ (R18) through coupled circuit (JP3); And with slide rheostat (R20) sliding end as time base circuit (U4) incoming signal; The output signal of time base circuit (U4) is connected through the input end PTA1 of phase inverter (U6A) with control chip (U3), resets with LED taillight and the deceleration value seven segment digital tubes of controlling deceleration/decel intensity.
3. display system according to claim 1 and 2, the unit that it is characterized in that being installed in the deceleration value of the demonstration of the seven segment digital tubes on the instrument carrier panel in the car is m/s
2The LED taillight is 5 led array, and 5 led array are respectively successively to there being the LED taillight of 1 ~ 5 parallel connection, and the mouth PTC0 ~ PTC4 of control chip (U3) is connected with 5 led array respectively through current driving circuit;
The deceleration value that charactron shows and the number of the bright lamp of taillight are as shown in the table:
。
4. display system according to claim 1 and 2, the power supply that it is characterized in that being installed in the demonstration of the deceleration/decel in instrument carrier panel charactron in the car connects master cock S2.
5. display system according to claim 3, the power supply that it is characterized in that being installed in the demonstration of the deceleration/decel in instrument carrier panel charactron in the car connects master cock S2.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102602332A true CN102602332A (en) | 2012-07-25 |
| CN102602332B CN102602332B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373443A (en) * | 2020-11-26 | 2021-02-19 | 西南林业大学 | Brake equipment and brake method for automobile speed reducing parachute |
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| 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
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Patent Citations (12)
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|---|---|---|---|---|
| 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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373443A (en) * | 2020-11-26 | 2021-02-19 | 西南林业大学 | Brake equipment and brake method for automobile speed reducing parachute |
| 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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| CN102602332B (en) | 2015-09-02 |
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Granted publication date: 20150902 Termination date: 20160328 |