CN201859318U - Automotive throttle mis-treading determination and safety control circuit - Google Patents
Automotive throttle mis-treading determination and safety control circuit Download PDFInfo
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- CN201859318U CN201859318U CN2010206301048U CN201020630104U CN201859318U CN 201859318 U CN201859318 U CN 201859318U CN 2010206301048 U CN2010206301048 U CN 2010206301048U CN 201020630104 U CN201020630104 U CN 201020630104U CN 201859318 U CN201859318 U CN 201859318U
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Abstract
The utility model discloses an automotive throttle mis-treading determination and safety control circuit, which is composed of a determination circuit and a signal conversion circuit. The utility model is characterized in that: the determination circuit comprises a signal amplitude determination circuit, a signal variation speed determination circuit and a signal duration determination circuit; a throttle signal is input into the signal amplitude determination circuit and the signal variation speed determination circuit; the output ends of the signal amplitude determination circuit and the signal variation speed determination circuit are connected with the signal duration determination circuit; the output ends of the signal amplitude determination circuit, the signal variation speed determination circuit and the signal duration determination circuit are connected with an input end of the signal conversion circuit through a first and circuit; and an output end of the signal conversion circuit is connected with a throttle output signal control wire. The automotive throttle mis-treading determination and safety control circuit has the following remarkable effects: capability for determining whether a driver treads the throttle effectively and automatically as multiple signal abnormity determination circuits are set, low error determination probability, stable circuit performance, simple structure of the circuit, low cost, high automation degree, sensitive and quick response.
Description
Technical field
The utility model belongs to vehicle safety control technology field, specifically, is that a kind of gas mistake is stepped on differentiation and safety control circuit thereof.
Background technology
Along with the development of society, the raising of living standards of the people, automobile has more and more been come into common people family.The safety problem of car steering is also remarkable day by day, especially maloperation takes place in the driver driving process and the traffic hazard that causes happens occasionally, and has caused showing great attention to of society.
With regard to present vehicle structure layout on the market, accelerator pedal of automobile and skidding pedal are all replaced respectively by a pin to be realized controlling, this causes the driver in case of emergency gas pedal to be used as the skidding pedal easily by mistake, thereby causes traffic hazard.
In the prior art, the patent of mis-accelerator pressing when also having some to prevent brake driver, such as a kind of mis-accelerator pressing emergency braking mechanism that publication number CN201240369 is announced, it is gone up and carries out skidding by mechanically operated mode, and reaction velocity is slower.Also have by the electrical control skidding, emergency braking apparatus during such as the disclosed a kind of braking automobile mis-accelerator pressing of Chinese patent 200920127769.X, it goes up the moving situation by acceleration transducer induction gas pedal, by single-chip microcomputer sensor signal is handled, by the aperture of solenoid control throttle nozzle, finally reach braking effect at last.
The shortcoming of prior art is: adopt electrical control; though retro-speed increases; but when judging mis-accelerator pressing, single-chip microcomputer only selected the gas pedal acceleration of motion as the reference standard; sensor signal can be interfered usually; make and cause maloperation, unstable working condition in the single-chip microcomputer deterministic process.
The utility model content
The purpose of this utility model is to overcome a kind of gas mistake of only selecting for use single channel to judge that signal causes that easily the defective of false judgment proposes in the prior art to step on differentiation and safety control circuit thereof.
For achieving the above object, the utility model adopts following scheme:
A kind of gas mistake is stepped on and is differentiated and safety control circuit, form by judging circuit and signaling conversion circuit, it is characterized in that: described judging circuit comprises the signal amplitude judging circuit, signal pace of change judging circuit and signal duration judging circuit, described signal amplitude judging circuit, signal pace of change judging circuit and signal duration judging circuit output terminal be connected on three input ends of first AND circuit, the output terminal of this first AND circuit connects described signaling conversion circuit, and the output terminal of this signaling conversion circuit is connected with throttle output signal control line;
The input end of described signal amplitude judging circuit is connected with the throttle input signal cable, and its output terminal connects the first input end of described signal duration of judging circuit;
The input end of described signal pace of change judging circuit also is connected on the throttle input signal cable, and its output terminal connects second input end of described signal duration of judging circuit.
Throttle signal can be uploaded on the described throttle input signal cable by more existing mature technologies, for example adopt the acceleration transducer of mentioning in displacement transducer or the background technology.When the driver normally trampled throttle, the application of force was comparatively slow, and the amplitude of throttle input signal is greater than reference voltage level, so through exporting a high level signal behind the signal amplitude judging circuit.But the pace of change of its throttle signal is very slow when slowly stepping on the gas, so signal pace of change judging circuit will be exported a low level signal, signal amplitude judging circuit and signal pace of change judging circuit are input to and can not satisfy time requirement in the judging circuit described signal duration, judging circuit also will be exported a low level signal signal duration, above three-way output signal is input to described signaling conversion circuit after through first AND circuit again, owing to be the low level signal input, signaling conversion circuit can not changed throttle signal, and its output terminal is exported normal throttle control signal to throttle control circuit.
If in case of emergency driver mistake is used as brake to throttle and is stepped on, firmly can be very violent, the amplitude of throttle signal not only can surpass default reference voltage, and throttle signal can reach threshold value in a very short time, the pace of change of signal is very fast, often emergency condition driver mistake can be floored throttle when stepping on, and meeting certain time, so, all can export a high level signal behind throttle signal input signal amplitude judging circuit and the signal pace of change judging circuit, the signal of described signal amplitude judging circuit and the output of signal pace of change judging circuit is again through also exporting a high level signal behind the judging circuit described signal duration, more than three road high level signals through being that a high level signal is input in the signaling conversion circuit equally after described first AND circuit, when receiving a high level input signal, described signaling conversion circuit the throttle signal of input can be converted to a throttle at idle signal, at last the throttle at idle signal is input on the throttle output signal control line and controls accelerator open degree, make automobile be in idling mode, also the throttle at idle signal can be used for controlling the electric brake device, finally make automobile reach the effect of brake deceleration.
Described signal amplitude judging circuit is provided with first voltage comparator and power supply, the normal phase input end of described first voltage comparator is connected with the throttle input signal cable, its inverting input is connected with described power supply through second resistance, the inverting input of described first voltage comparator is also through the 3rd resistance eutral grounding, and the output terminal of described first voltage comparator is the output terminal of signal amplitude judging circuit.
Power supply obtains the anti-phase reference voltage of first voltage comparator after through second resistance and the 3rd electric resistance partial pressure, when the amplitude of throttle input signal during greater than this anti-phase reference voltage, first voltage comparator output high value, when the amplitude of throttle input signal during less than this anti-phase reference voltage, the first voltage comparator output low level value.
Described signal pace of change judging circuit is provided with second voltage comparator, be connected with the normal phase input end of described second voltage comparator behind described throttle input signal cable string first electric capacity, the normal phase input end of this second voltage comparator is also through the 5th resistance eutral grounding, the inverting input of described second voltage comparator is connected with power supply through the 6th resistance, the inverting input of this second voltage comparator is also through the 7th resistance eutral grounding, and the output terminal of described second voltage comparator is the output terminal of signal pace of change judging circuit.
Described first electric capacity and the 5th resistance are formed a differentiating circuit, during mis-accelerator pressing, the throttle signal of input changes suddenly, first electric capacity in differentiating circuit charging suddenly reaches capacity, make the level of normal phase input end of second voltage comparator be higher than the reference voltage of inverting input, second voltage comparator output high level signal.If slowly trample throttle, throttle signal changes slowly, can discharge after the charging of electric capacity in the differentiating circuit, make the level value of normal phase input end of second voltage comparator be lower than the reference voltage of inverting input, the second voltage comparator output low level signal all the time.
Described signal duration, judging circuit was provided with second AND circuit, first relay and tertiary voltage comparer;
Two input ends of described second AND circuit are respectively the first input end and second input end of judging circuit signal duration;
The first input end of described first relay connects the output terminal of second AND circuit, second input end grounding, and first power end connects power supply, and output terminal is connected through the normal phase input end of the 9th resistance with described tertiary voltage comparer;
The normal phase input end of described tertiary voltage comparer is also through second capacity earth, inverting input is connected with power supply through the tenth resistance, the inverting input of this tertiary voltage comparer is also through the 11 resistance eutral grounding, and its output terminal is the output terminal of judging circuit signal duration.
When throttle signal amplitude and throttle signal pace of change all transfinite, described first voltage comparator and second voltage comparator are all exported high level signal, above two-way high level signal still is a high level signal after through second AND circuit, when second port of first relay receives high level signal, its first port will be connected with the 4th port, and the magnitude of voltage that the port of winning is exported equals the value of power supply.Described the 9th resistance and second electric capacity constitute one group of RC timing circuit, time constant
When the time of first port of described first relay output high level reaches the timing of timing circuit, the magnitude of voltage that two ends, described second electric capacity charging back are reached makes the tertiary voltage comparer export high level signal greater than the reference voltage of described tertiary voltage comparer inverting input.
Described signaling conversion circuit is second relay, the first input end of this second relay is connected with the output terminal of described first AND circuit, second input end grounding, first power end connects reference voltage source, the second source end is connected on the throttle input signal cable, and output terminal is connected on the throttle signal output control line.
Described first relay is identical with the inner structure of second relay, all is provided with pickup coil and change-over switch;
Wherein an end of pickup coil is as first input end, and the other end of pickup coil is as second input end;
The stiff end of change-over switch is as output terminal, and two movable ends of change-over switch are respectively as first power end and second source end.
When described signal amplitude judging circuit, signal pace of change judging circuit and signal duration, judging circuit three road high level signals were input in described first AND circuit simultaneously, then think and belong to driver's mis-accelerator pressing, this first AND circuit will be exported high level signal to the first input end of described second relay, make described second relay output terminal with connect with first power end, the output level value is the value of reference voltage source, thereby control the throttle control circuit or the skidding circuit working of back level, reach the purpose of car deceleration.
Remarkable result of the present utility model is: proposed a kind of gas mistake and stepped on differentiation and safety control circuit thereof, be provided with the unusual decision circuitry of multiple signals, can judge automatically effectively whether the driver belongs to mis-accelerator pressing, and the false judgment probability is few, circuit performance is stable; The circuit structure that the utility model adopts is simple, with low cost, big independent analog component of more options and simple numerical gate circuit, and the automaticity height, it is quick to be quick on the draw.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As Fig. 1, shown in 2: a kind of gas mistake is stepped on and is differentiated and safety control circuit, form by judging circuit 1 and signaling conversion circuit 2, described judging circuit 1 comprise signal amplitude judging circuit 1a, signal pace of change judging circuit 1b and signal duration judging circuit 1c;
Described signal amplitude judging circuit 1a, signal pace of change judging circuit 1b and signal duration have all been used voltage comparator among the judging circuit 1c, the inventor has selected two two voltage comparators that the chip model is LM393D for use in specific implementation process, wherein 1 of a LM393D chip, 2,3,4 and 8 pins are formed the first voltage comparator U1A, 4,5,6,7 and 8 pins of the one LM393D chip are formed the second voltage comparator U1B, and 1,2,3,4 and 8 pins of the 2nd LM393D chip are formed tertiary voltage comparer U4A.
With the 1st pin of a LM393D chip output terminal as described signal amplitude judging circuit 1a, the 2nd pin is connected with described power supply VCC through second resistance R 2, the 3rd pin is connected with the throttle input signal cable, the 4th pin ground connection, between the 2nd pin and the 4th pin, be connected in series the 3rd resistance R 3, described throttle input signal cable also is connected with the 5th pin through first capacitor C 1, the 5th pin the 5th resistance R 5 back ground connection of also connecting, the 6th pin also is connected with power supply VCC through the 6th resistance R 6, between the 6th pin and the 4th pin, also be serially connected with the 7th resistance R 7, the 7th pin is as the output port of described signal pace of change judging circuit 1b, the 8th pin connects described power supply VCC, between the 8th pin and the 1st pin, also be serially connected with first resistance R 1, between the 8th pin and the 7th pin, also be serially connected with the 4th resistance R 4.
Described signal duration, judging circuit 1c also was provided with the second AND circuit U6A and the first relay U5, wherein second AND circuit U6A employing model is SN74LS08D four or two inputs and a door chip, the 1st pin of this SN74LS08D chip is connected with the 1st pin of a described LM393D chip, the 2nd pin is connected with the 7th pin of a described LM393D chip, the 3rd pin is connected on the first input end of the described first relay U5, first power end of this first relay U5 connects power supply VCC, second input end grounding, output port is connected through the 3rd pin of the 9th resistance R 9 with described the 2nd LM393D chip.
The 3rd pin of described the 2nd LM393D chip also is connected in series second capacitor C, 2 back ground connection, the 2nd pin is connected with power supply VCC through the tenth resistance R 10, the 4th pin ground connection, the 8th pin connects power supply VCC, the 1st pin is as the output port of described signal duration of judging circuit 1c, between the 2nd pin and the 4th pin, be serially connected with the 11 resistance R 11, between the 8th pin and the 1st pin, also be serially connected with the 8th resistance R 8.
Described signal amplitude judging circuit 1a, signal pace of change judging circuit 1b and signal duration judging circuit 1c output terminal be connected with the input end of described signaling conversion circuit 2 through the first AND circuit U3A, these signaling conversion circuit 2 output terminals are connected on the throttle output signal control line.
In specific embodiment, adopting model is that SN74LS11D three or three inputs are formed the described first AND circuit U3A with 1,2,12 and 13 pins of door chip, the 1st pin that is about to the SN74LS11D chip is connected with the 1st pin of a described LM393D chip, the 2nd pin of SN74LS11D chip is connected with the 7th pin of a described LM393D chip, the 13rd pin of SN74LS11D chip is connected with the 1st pin of described the 2nd LM393D chip, the 12nd pin of SN74LS11D chip is connected on the input end of described signaling conversion circuit 2.
Described signaling conversion circuit 2 is provided with the second relay U2, the first input end of this second relay U2 is connected with the output terminal of the described first AND circuit U3A, second input end grounding, first power end connects reference voltage source VCC1.6, the second source end is connected on the throttle input signal cable, and output terminal is connected on the throttle signal output control line.
The described first relay U5 is identical with the inner structure of the second relay U2, all be provided with pickup coil and change-over switch, wherein an end of pickup coil is as first input end, the other end of pickup coil is as second input end, the stiff end of change-over switch is as output terminal, and two movable ends of change-over switch are respectively as first power end and second source end.
Principle of work of the present utility model is: throttle signal can be uploaded on the described throttle input signal cable by more existing mature technologies such as displacement transducer or acceleration transducers.When the driver normally trampled throttle, the application of force was comparatively slow, and the amplitude of throttle input signal is greater than reference voltage level, so through exporting a high level signal behind the signal amplitude judging circuit 1a.But the pace of change of its throttle signal is very slow when slowly stepping on the gas, so signal pace of change judging circuit 1b will export a low level signal, signal amplitude judging circuit 1a and signal pace of change judging circuit 1b are input to and can not satisfy time requirement among the judging circuit 1c described signal duration, judging circuit 1c also will export a low level signal signal duration, above three-way output signal is input to described signaling conversion circuit 2 after through the first AND circuit U3A again, owing to be the low level signal input, signaling conversion circuit 2 can not changed throttle signal, and its output terminal is exported normal throttle control signal to throttle control circuit.
If in case of emergency driver mistake is used as brake to throttle and is stepped on, firmly can be very violent, the amplitude of throttle signal not only can surpass default reference voltage, and throttle signal can reach threshold value in a very short time, the pace of change of signal is very fast, often emergency condition driver mistake can be floored throttle when stepping on, and meeting certain time, so, all can export a high level signal behind throttle signal input signal amplitude judging circuit 1a and the signal pace of change judging circuit 1b, the signal of described signal amplitude judging circuit 1a and signal pace of change judging circuit 1b output is again through also exporting a high level signal behind the judging circuit 1c described signal duration, more than three road high level signals through being that a high level signal is input in the signaling conversion circuit 2 equally behind the described first AND circuit U3A, when receiving a high level input signal, described signaling conversion circuit 2 throttle signal of input can be converted to a throttle at idle signal, at last the throttle at idle signal is input on the throttle output signal control line and controls accelerator open degree, make automobile be in idling mode, also the throttle at idle signal can be used for controlling the electric brake device, finally make automobile reach the effect of brake deceleration.
Claims (6)
1. a gas mistake is stepped on and is differentiated and safety control circuit, form by judging circuit (1) and signaling conversion circuit (2), it is characterized in that: described judging circuit (1) comprises signal amplitude judging circuit (1a), signal pace of change judging circuit (1b) and judging circuit signal duration (1c), described signal amplitude judging circuit (1a), the output terminal of signal pace of change judging circuit (1b) and judging circuit signal duration (1c) is connected on three input ends of first AND circuit (U3A), the output terminal of this first AND circuit (U3A) connects described signaling conversion circuit (2), and the output terminal of this signaling conversion circuit (2) is connected with throttle output signal control line;
The input end of described signal amplitude judging circuit (1a) is connected with the throttle input signal cable, and its output terminal connects the first input end of described judging circuit signal duration (1c);
The input end of described signal pace of change judging circuit (1b) also is connected on the throttle input signal cable, and its output terminal connects second input end of described judging circuit signal duration (1c).
2. gas mistake according to claim 1 is stepped on and is differentiated and safety control circuit, it is characterized in that: described signal amplitude judging circuit (1a) is provided with first voltage comparator (U1A) and power supply (VCC), the normal phase input end of described first voltage comparator (U1A) is connected with the throttle input signal cable, its inverting input is connected with described power supply (VCC) through second resistance (R2), also through the 3rd resistance (R3) ground connection, the output terminal of described first voltage comparator (U1A) is the output terminal of signal amplitude judging circuit (1a) to the inverting input of described first voltage comparator (U1A).
3. gas mistake according to claim 1 is stepped on and is differentiated and safety control circuit, it is characterized in that: described signal pace of change judging circuit (1b) is provided with second voltage comparator (U1B), described throttle input signal cable string first electric capacity (C1) back is connected with the normal phase input end of described second voltage comparator (U1B), the normal phase input end of this second voltage comparator (U1B) is also through the 5th resistance (R5) ground connection, the inverting input of described second voltage comparator (U1B) is connected with power supply (VCC) through the 6th resistance (R6), the inverting input of this second voltage comparator (U1B) is also through the 7th resistance (R7) ground connection, and the output terminal of described second voltage comparator (U1B) is the output terminal of signal pace of change judging circuit (1b).
4. gas mistake according to claim 1 is stepped on and is differentiated and safety control circuit, and it is characterized in that: described judging circuit signal duration (1c) is provided with second AND circuit (U6A), first relay (U5) and tertiary voltage comparer (U4A);
Two input ends of described second AND circuit (U6A) are respectively the first input end and second input end of judging circuit signal duration (1c);
The first input end of described first relay (U5) connects the output terminal of second AND circuit (U6A), second input end grounding, first power end connects power supply (VCC), and output terminal is connected through the normal phase input end of the 9th resistance (R9) with described tertiary voltage comparer (U4A);
The normal phase input end of described tertiary voltage comparer (U4A) is also through second electric capacity (C2) ground connection, inverting input is connected with power supply (VCC) through the tenth resistance (R10), the inverting input of this tertiary voltage comparer (U4A) is also through the 11 resistance (R11) ground connection, and its output terminal is the output terminal of judging circuit signal duration (1c).
5. gas mistake according to claim 1 is stepped on and is differentiated and safety control circuit, it is characterized in that: described signaling conversion circuit (2) is second relay (U2), the first input end of this second relay (U2) is connected with the output terminal of described first AND circuit (U3A), second input end grounding, first power end connects reference voltage source (VCC1.6), the second source end is connected on the throttle input signal cable, and output terminal is connected on the throttle signal output control line.
6. step on differentiation and safety control circuit thereof according to claim 4 or 5 described gas mistakes, it is characterized in that: described first relay (U5) is identical with the inner structure of second relay (U2), all is provided with pickup coil and change-over switch;
Wherein an end of pickup coil is as first input end, and the other end of pickup coil is as second input end;
The stiff end of change-over switch is as output terminal, and two movable ends of change-over switch are respectively as first power end and second source end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206301048U CN201859318U (en) | 2010-11-29 | 2010-11-29 | Automotive throttle mis-treading determination and safety control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206301048U CN201859318U (en) | 2010-11-29 | 2010-11-29 | Automotive throttle mis-treading determination and safety control circuit |
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| Publication Number | Publication Date |
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| CN201859318U true CN201859318U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206301048U Expired - Fee Related CN201859318U (en) | 2010-11-29 | 2010-11-29 | Automotive throttle mis-treading determination and safety control circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407437A (en) * | 2013-08-28 | 2013-11-27 | 重庆工业职业技术学院 | System for stopping behavior of mis-stepping on accelerator pedal as brake pedal of motor vehicle driver |
| CN104890656A (en) * | 2015-05-20 | 2015-09-09 | 青岛歌尔声学科技有限公司 | Circuit for judging abnormality of vehicle throttle states, and electronic equipment with circuit |
| CN104986158A (en) * | 2015-06-24 | 2015-10-21 | 吉林大学 | Automobile accelerator pedal mistaken stepping safety braking system and braking method thereof |
| CN108909451A (en) * | 2016-01-05 | 2018-11-30 | 袁芳 | A kind of anti-misoperation throttle control system and control method |
| CN110329065A (en) * | 2019-07-09 | 2019-10-15 | 杭州洲钜电子科技有限公司 | Automotive throttle fault tolerant secure control method and its device |
| CN114954383A (en) * | 2021-02-25 | 2022-08-30 | 博泰车联网科技(上海)股份有限公司 | Control method and system for preventing accelerator from being stepped on by mistake |
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2010
- 2010-11-29 CN CN2010206301048U patent/CN201859318U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407437A (en) * | 2013-08-28 | 2013-11-27 | 重庆工业职业技术学院 | System for stopping behavior of mis-stepping on accelerator pedal as brake pedal of motor vehicle driver |
| CN104890656A (en) * | 2015-05-20 | 2015-09-09 | 青岛歌尔声学科技有限公司 | Circuit for judging abnormality of vehicle throttle states, and electronic equipment with circuit |
| CN104890656B (en) * | 2015-05-20 | 2018-02-06 | 青岛歌尔声学科技有限公司 | It is a kind of to judge vehicle accelerator abnormal state circuit and the electronic equipment with the circuit |
| CN104986158A (en) * | 2015-06-24 | 2015-10-21 | 吉林大学 | Automobile accelerator pedal mistaken stepping safety braking system and braking method thereof |
| CN104986158B (en) * | 2015-06-24 | 2018-04-27 | 吉林大学 | A kind of mistake step on accelerator of vehicle sure brake system and its braking method |
| CN108909451A (en) * | 2016-01-05 | 2018-11-30 | 袁芳 | A kind of anti-misoperation throttle control system and control method |
| CN110329065A (en) * | 2019-07-09 | 2019-10-15 | 杭州洲钜电子科技有限公司 | Automotive throttle fault tolerant secure control method and its device |
| CN114954383A (en) * | 2021-02-25 | 2022-08-30 | 博泰车联网科技(上海)股份有限公司 | Control method and system for preventing accelerator from being stepped on by mistake |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20111129 |