CN205256028U - Automobile -used ECU control formula speed limit circuit - Google Patents
Automobile -used ECU control formula speed limit circuit Download PDFInfo
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- CN205256028U CN205256028U CN201521020867.XU CN201521020867U CN205256028U CN 205256028 U CN205256028 U CN 205256028U CN 201521020867 U CN201521020867 U CN 201521020867U CN 205256028 U CN205256028 U CN 205256028U
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Abstract
The utility model discloses an automobile -used ECU control formula speed limit circuit, including on -vehicle drive information source, ECU, on -vehicle executor, on -vehicle drive information source output end group is connected with speed limit control circuit, and this speed limit control circuit's speed of a motor vehicle control end is connected ECU, ECU's output is connected on -vehicle executor, speed limit control circuit's monitoring end still is connected with monitoring information source circuit. Speed limit control circuit is provided with letter source processing circuit and switching circuit, it has two way input end group and output end group of the same kind to switch circuit arrangement, wherein first via input end group is connected with the output of letter source processing circuit, and the input end group of letter source processing circuit connects monitoring information source circuit, the second way input end group of switching circuit with on -vehicle drive information source is connected, the output end group of switching circuit connects ECU. Show the effect: the utility model discloses when the student drives, can force the speed limit to the reliable control of the speed of a motor vehicle is realized at safety speed limit within range.
Description
Technical field
The utility model relates to a kind of automobile circuit technology, and a kind of automobile-used ECU controls formula speed limit specificallyCircuit.
Background technology
The vehicle speed control system of existing vehicle is generally to be decided by the aperture of TR and air throttle, vapourCar ECU regulates the aperture size of engine air throttle by reading the voltage magnitude of throttle sensor. ButIn learner-driven vehicle, in the time of the independent Driving Instructor's car of student, because operation is unskilled, easily throttle is used as to brake,Owing to there is no speed controller, cause car speed to increase suddenly, thereby cause the accident.
For avoiding student's maloperation to cause tragedy, need to design a kind of speed control circuit for learner-driven vehicle specially,This speed control circuit, in the time that student drives, can be forced speed limit. This speed control circuit is by passing at throttleBetween sensor and automobile ECU, be connected in series speed limit circuit, by the rate signal of speed limit circuit control inputs ECU,The speed of a motor vehicle is controlled in safe range, realizes the reliable control of the speed of a motor vehicle.
Utility model content
In order to overcome the problems referred to above, the utility model proposes a kind of automobile-used ECU and control formula speed limit circuit, learningWhen member drives, force speed limit, and within the scope of safety speed-limit, realize the reliable control of the speed of a motor vehicle.
For reaching above-mentioned effect, the technical solution of the utility model is as follows, and a kind of automobile-used ECU controls formula speed limitCircuit, comprises vehicle-mounted driving information source, ECU, vehicle-mounted actuator, and its key is: described vehicle-mounted driving information sourceOutput group is connected with rate-limiting control circuit, and the speed of a motor vehicle control end of this rate-limiting control circuit connects described ECU,The output of ECU connects described vehicle-mounted actuator;
The monitoring side of described rate-limiting control circuit is also connected with monitoring information source circuit.
Rate-limiting control circuit is arranged between vehicle-mounted driving information source and ECU, for controlling the speed of a motor vehicle input of ECUSignal.
Monitoring information source circuit is used for measuring vehicle speed data, and vehicle speed data is passed to rate-limiting control circuit.
Described rate-limiting control circuit is also provided with message source process circuit and commutation circuit, and described commutation circuit is provided withTwo-way input Zu He mono-road output group;
Wherein first via input group is connected with the output of message source process circuit, the input of message source process circuitEnd group connects described monitoring information source circuit;
The second road input group of commutation circuit is connected with described vehicle-mounted driving information source;
The output group of commutation circuit connects ECU, and the output group of ECU connects vehicle-mounted actuator.
In the two-way input group of described commutation circuit and output group, be all provided with deception circuit, described deceptionCircuit is ground capacity.
Described message source process circuit comprises data processing circuit, and the information source input of this data processing circuit connects prisonSurvey information source circuit, the false signal input group of data processing circuit is connected with false signal circuit, data processing circuitOutput be connected with amplifying circuit, this amplifying circuit connects described commutation circuit.
In the time that the speed of a motor vehicle is too fast, monitoring information source electric circuit inspection passes to message source process electricity to GES and by this signalRoad, message source process circuit disconnects former speed of a motor vehicle control circuit by commutation circuit, connects the puppet letter of message source process circuitNumber deception ECU, final vehicle-mounted actuator is carried out speed of a motor vehicle control according to the low speed data of prior setting, has avoidedThe mistake that member's mis-accelerator pressing causes is accelerated.
Described data processing circuit comprises amplifier, and the input in the same way of this amplifier connects described monitoring information source electricityRoad, reverse input end, through ground resistance earth, is exported the positive input of termination comparator, the negative sense of comparatorInput termination threshold voltage, the base stage of output termination the 6th triode of comparator, the current collection of the 6th triodeUtmost point ground connection, the emitter stage of the 6th triode connects power supply through pull-up resistor, and the emitter stage of the 6th triode also connects buffer memoryThe control end of device;
Even in student's driving condition, as long as the speed of a motor vehicle is unhappy, threshold voltage is greater than the voltage of positive inputValue, comparator is output low level still, and restriction commutation circuit can not be carried out passage switching, maintains former car circuit fortuneOK.
The output of this buffer connects described amplifying circuit, and this amplifying circuit is by transistor amplifier and optocouplerAmplifying circuit composition, the input of described transistor amplifier and optocoupler amplifying circuit is attempted by described bufferOutput, the output of transistor amplifier connects the V1-1 end of described commutation circuit first via input group,The output of optocoupler amplifying circuit connects the V2-1 end of described commutation circuit first via input group.
Described false signal circuit comprises fork shift switch, and this fork shift switch is provided with one and cuts out shelves and N speed limitShelves, wherein close one end ground connection of grade A0, another termination phase inverter close input, the pass of this phase inverterClose buffer described in output termination, the control end of commutation circuit described in the closing control termination of buffer;
One end ground connection of N speed limit shelves, the other end connects respectively a gear input of phase inverter, phase inverter oneA pair of should have N gear output, and N gear output connects respectively described buffer gear drive end.
Described fork shift switch is provided with one and cuts out shelves and three speed limit shelves;
The different output voltage values of different gear controls, output voltage values is to set value in advance. To reach follow-upThe differentiation control of circuit, realizes the restriction as required of the speed of a motor vehicle. But in the time closing the work of grade ground connection, the speed of a motor vehicle is no longer subject toThe control of message source process circuit, only accepts the control of driver's gas pedal.
Described transistor amplifier is set side by side with the consistent triode of three line structures, the base stage of each road triodeThe gear output of buffer described in Jie Yi road respectively, the grounded emitter of each triode, colelctor electrode is each through resistanceAfter different divider resistance, be attempted by the first voltage-stablizer that end is set is upper, described in the output termination of this first voltage-stablizerThe V1-1 end of commutation circuit first via input group;
Described optocoupler amplifying circuit is set side by side with the consistent optocoupler of three line structures, and the input of each road optocoupler respectivelyConnect the gear output of described buffer, the output of each road optocoupler, after the different divider resistance of resistance, and connectsArranging on end of the second voltage-stablizer, commutation circuit first via input described in the output termination of this second voltage-stablizerThe V2-1 end of group.
The output of described comparator also connects the base stage of the 5th triode, the grounded emitter of the 5th triode,Colelctor electrode connects the closing control end of commutation circuit, commutation circuit is provided with closes triode, and this closes triodeBase stage is described closing control end, closes the grounded emitter of triode, after the coil of colelctor electrode string relay, connectsPower supply, the normal open switch group of relay connects described commutation circuit first via input group and output group, relayThe normally closed switch group of device connects described commutation circuit the second road input group and output group;
The second road input group meets output group V1-0, the V2-0 of described vehicle-mounted driving information source.
When closing control end output low level, commutation circuit the second road input group is connected with output group, automobileKeep former car duty, the vehicle-mounted driving information source of former car is to ECU, and ECU keeps former to vehicle-mounted actuatorCar conducting state.
When closing control end output high level, commutation circuit first via input group is connected with output group, automobileEnter speed limit duty, the vehicle-mounted driving information source of former car accesses puppet through speed of a motor vehicle control circuit to ECU circuitVehicle speed data signal, vehicle-mounted actuator is according to pseudo-GES control the max speed.
Described message source process circuit is also provided with holding circuit, and this holding circuit comprises multichannel AND circuit, multichannelThe multi-channel input of AND circuit connect respectively described fork shift switch close shelves and N speed limit shelves, multichannel andThe base stage of output termination the 7th triode of circuit, the grounded emitter of the 7th triode, described in colelctor electrode connectsThe closing control end of commutation circuit.
In the time of the loose contact of fork shift switch, message source process circuit walks off from one's job automatically, ensures that automobile is stepped on by throttle onlyPlate control.
Described monitoring information source circuit or be throttle observation circuit, or be vehicle speed sensor circuit, or be wheel speed sensingDevice circuit, or be engine load sensor circuit;
Described vehicle-mounted driving information source is throttle;
Described vehicle-mounted actuator is air throttle.
Monitoring information source circuit can be monitored accelerator pedal signal, also can monitor vehicle speed data, also can monitor wheelSpeed sensing data, also can monitor throttle opening signal.
Remarkable result of the present utility model: proposed a kind of automobile-used ECU and controlled formula speed limit circuit, opened studentChe Shi, forces speed limit, and within the scope of safety speed-limit, realizes the reliable control of the speed of a motor vehicle.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is operation principle block diagram of the present utility model;
Fig. 3 is false signal circuit and buffer wiring diagram;
Fig. 4 is transistor amplifier figure;
Fig. 5 is optocoupler amplification circuit diagram;
Fig. 6 is amplifier and comparator wiring diagram in data processing circuit;
Fig. 7 is holding circuit figure;
Fig. 8 is commutation circuit figure.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model and operation principle are done further to say in detailBright.
As shown in Figure 1, a kind of automobile-used ECU controls formula speed limit circuit, comprise vehicle-mounted driving information source 3, ECU,Vehicle-mounted actuator 4, described vehicle-mounted driving information source 3 output groups are connected with rate-limiting control circuit 100, this speed limitThe speed of a motor vehicle control end of control circuit 100 connects described ECU, and the output of ECU connects described vehicle-mounted actuator 4;
The monitoring side of described rate-limiting control circuit 100 is also connected with monitoring information source circuit 5.
Rate-limiting control circuit 100 is arranged between vehicle-mounted driving information source 3 and ECU.
As shown in Figure 2, described rate-limiting control circuit 100 is also provided with message source process circuit 1 and commutation circuit 2,Described commutation circuit 2 is provided with two-way input Zu He mono-road output group;
Wherein first via input group is connected with the output of message source process circuit 1, message source process circuit 1Input group connects described monitoring information source circuit 5;
The second road input group of commutation circuit 2 is connected with described vehicle-mounted driving information source 3;
The output group of commutation circuit 2 connects ECU, and the output group of ECU connects vehicle-mounted actuator 4.
In the two-way input group of described commutation circuit 2 and output group, be all provided with deception circuit, described takes advantage ofDeceiving circuit is ground capacity.
Described deception circuit is ground capacity. Ground capacity is electrochemical capacitor, can make the each road of commutation circuit 2Input/output terminal group keeps of short duration level, avoids ECU to detect when data and occurs loss of data, sends wrongFault message.
Described message source process circuit 1 comprises data processing circuit 11, the information source input of this data processing circuit 11End connects monitoring information source circuit 5, and the false signal input group of data processing circuit 11 is connected with false signal circuit,The output of data processing circuit 11 is connected with amplifying circuit, and this amplifying circuit connects described commutation circuit 2.
As shown in Fig. 6, Fig. 3, described data processing circuit 11 comprises amplifier U3B, this amplifier U3BInput in the same way connect described monitoring information source circuit 5, reverse input end is through ground resistance earth, output terminationThe positive input of comparator U3A, the negative input of comparator U3A connects threshold voltage, comparator U3AThe base stage of output termination the 6th triode Q6, the grounded collector of the 6th triode Q6, the six or three utmost pointThe emitter stage of pipe Q6 connects power supply through pull-up resistor R33, and the emitter stage of the 6th triode Q6 also meets buffer U2Control end 2OE;
As shown in Fig. 3, Fig. 4, Fig. 5, the output of this buffer U2 connects described amplifying circuit, this amplificationCircuit is made up of transistor amplifier and optocoupler amplifying circuit, and described transistor amplifier and optocoupler amplify electricityThe input on road is attempted by described buffer U2 output, described in the output of transistor amplifier connects, cutsThe V1-1 end that changes circuit 2 first via input groups, the output of optocoupler amplifying circuit connects described commutation circuit 2The V2-1 end of first via input group.
As shown in Figure 3, described false signal circuit comprises fork shift switch, and this fork shift switch is provided with one and cuts out shelvesWith N speed limit shelves, wherein close one end ground connection of grade A0, another termination phase inverter U1 closes input,This phase inverter U1 close output termination described in buffer U2, the closing control end D0 of buffer U2 meets instituteState the control end of commutation circuit 2;
One end ground connection of N speed limit shelves, the other end connects respectively a gear input of phase inverter U1, anti-phaseDevice U1 is one by one to there being N gear output, and N gear output connects respectively described buffer U2 shelvesPosition drive end.
Described fork shift switch is provided with one and cuts out shelves and three speed limit shelves;
As shown in Figure 4, described transistor amplifier is set side by side with the consistent triode of three line structures, each roadThe gear output of buffer U2 described in the base stage difference Jie Yi road of triode, the grounded emitter of each triode,Colelctor electrode after the different divider resistance of resistance, be attempted by the first voltage-stablizer U4 that end is set is upper, this is first steadyThe V1-1 of commutation circuit 2 first via input groups end described in the output termination of depressor U4;
As shown in Figure 5, described optocoupler amplifying circuit is set side by side with the consistent optocoupler of three line structures, each road optocouplerInput connect respectively the gear output of described buffer U2, the output of each road optocoupler is different through resistanceAfter divider resistance, what be attempted by the second voltage-stablizer U5 arranges end above, the output termination of this second voltage-stablizer U5The V2-1 end of described commutation circuit 2 first via input groups.
As shown in Fig. 6, Fig. 8, the output of described comparator U3A also connects the base stage of the 5th triode Q5,The grounded emitter of the 5th triode Q5, colelctor electrode connects the closing control end of commutation circuit 2, commutation circuit2 are provided with and close triode Q4, and this base stage of closing triode Q4 is described closing control end, closes three utmost pointsThe grounded emitter of pipe Q4, connects power supply after the coil of colelctor electrode string relay, and the normal open switch group of relay connectsConnect described commutation circuit 2 first via input groups and output group, described in the normally closed switch group of relay connects, cutChange circuit 2 second road input group and output groups;
The second road input group meets output group V1-0, the V2-0 of described vehicle-mounted driving information source 3.
As shown in Figure 7, described message source process circuit 1 is also provided with holding circuit, and this holding circuit comprises multichannelAND circuit U9, the multi-channel input of multichannel AND circuit U9 connect respectively described fork shift switch close shelves andN speed limit shelves, the base stage of output termination the 7th triode Q7 of multichannel AND circuit U9, the seven or three utmost pointThe grounded emitter of pipe (Q7), colelctor electrode connects the closing control end of described commutation circuit 2.
Described monitoring information source circuit 5 or be throttle observation circuit, or be vehicle speed sensor circuit, or be that wheel speed passesSensor circuit, or be engine load sensor circuit;
Monitoring information source circuit 5 can be realized the monitoring of speed by above-mentioned four kinds of circuit, and monitored data is passed toRate-limiting control circuit (100), rate-limiting control circuit (100) thus control ECU input speed data controlThe speed of a motor vehicle.
Described vehicle-mounted driving information source 3 is throttle;
Described vehicle-mounted actuator 4 is air throttle.
Claims (10)
1. an automobile-used ECU controls formula speed limit circuit, comprise vehicle-mounted driving information source (3), ECU, vehicle-mounted actuator (4), it is characterized in that: described vehicle-mounted driving information source (3) output group is connected with rate-limiting control circuit (100), the speed of a motor vehicle control end of this rate-limiting control circuit (100) connects described ECU, and the output of described ECU connects described vehicle-mounted actuator (4);
The monitoring side of described rate-limiting control circuit (100) is also connected with monitoring information source circuit (5).
2. the automobile-used ECU of one according to claim 1 controls formula speed limit circuit, it is characterized in that: described rate-limiting control circuit (100) is also provided with message source process circuit (1) and commutation circuit (2), described commutation circuit (2) is provided with two-way input Zu He mono-road output group;
Wherein first via input group is connected with the output of message source process circuit (1), and the input group of message source process circuit (1) connects described monitoring information source circuit (5);
The second road input group of commutation circuit (2) is connected with described vehicle-mounted driving information source (3);
The output group of commutation circuit (2) connects ECU, and the output group of this ECU connects vehicle-mounted actuator (4).
3. the automobile-used ECU of one according to claim 2 controls formula speed limit circuit, it is characterized in that: in the two-way input group of described commutation circuit (2) and output group, be all provided with deception circuit, described deception circuit is ground capacity.
4. the automobile-used ECU of one according to claim 2 controls formula speed limit circuit, it is characterized in that: described message source process circuit (1) comprises data processing circuit (11), the information source input of this data processing circuit (11) connects monitoring information source circuit (5), the false signal input group of data processing circuit (11) is connected with false signal circuit, the output of data processing circuit (11) is connected with amplifying circuit, and this amplifying circuit connects described commutation circuit (2).
5. the automobile-used ECU of one according to claim 4 controls formula speed limit circuit, it is characterized in that: described data processing circuit (11) comprises amplifier (U3B), the input in the same way of this amplifier (U3B) connects described monitoring information source circuit (5), reverse input end is through ground resistance earth, the positive input of output termination comparator (U3A), the negative input of comparator (U3A) connects threshold voltage, the base stage of output termination the 6th triode (Q6) of comparator (U3A), the grounded collector of the 6th triode (Q6), the emitter stage of the 6th triode (Q6) connects power supply through pull-up resistor (R33), the emitter stage of the 6th triode (Q6) also connects the control end (2OE) of buffer (U2),
The output of this buffer (U2) connects described amplifying circuit, this amplifying circuit is made up of transistor amplifier and optocoupler amplifying circuit, the input of described transistor amplifier and optocoupler amplifying circuit is attempted by described buffer (U2) output, the output of transistor amplifier connects the V1-1 end of described commutation circuit (2) first via input group, and the output of optocoupler amplifying circuit connects the V2-1 end of described commutation circuit (2) first via input group.
6. the automobile-used ECU of one according to claim 5 controls formula speed limit circuit, it is characterized in that: described false signal circuit comprises fork shift switch, this fork shift switch is provided with one and cuts out shelves and N speed limit shelves, wherein close one end ground connection of grade A0, another termination phase inverter (U1) close input, this phase inverter (U1) close output termination described in buffer (U2), the closing control end (D0) of buffer (U2) connects the control end of described commutation circuit (2);
One end ground connection of N speed limit shelves, the other end connects respectively a gear input of phase inverter (U1), phase inverter (U1) is one by one to there being N gear output, and N gear output connects respectively described buffer (U2) gear drive end.
7. the automobile-used ECU of one according to claim 6 controls formula speed limit circuit, it is characterized in that: described fork shift switch is provided with one and cuts out shelves and three speed limit shelves;
Described transistor amplifier is set side by side with the consistent triode of three line structures, the gear output of buffer (U2) described in the base stage difference Jie Yi road of each road triode, the grounded emitter of each triode, colelctor electrode is after the different divider resistance of resistance, be attempted by the first voltage-stablizer (U4) that end is set is upper, the V1-1 end of commutation circuit (2) first via input group described in the output termination of this first voltage-stablizer (U4);
Described optocoupler amplifying circuit is set side by side with the consistent optocoupler of three line structures, the input of each road optocoupler connects respectively the gear output of described buffer (U2), the output of each road optocoupler is after the different divider resistance of resistance, be attempted by the second voltage-stablizer (U5) that end is set is upper, the V2-1 end of commutation circuit (2) first via input group described in the output termination of this second voltage-stablizer (U5).
8. the automobile-used ECU of one according to claim 7 controls formula speed limit circuit, it is characterized in that: the output of described comparator (U3A) also connects the base stage of the 5th triode (Q5), the grounded emitter of the 5th triode (Q5), colelctor electrode connects the closing control end of commutation circuit (2), commutation circuit (2) is provided with closes triode (Q4), this base stage of closing triode (Q4) is described closing control end, close the grounded emitter of triode (Q4), after the coil of colelctor electrode string relay, connect power supply, the normal open switch group of relay connects described commutation circuit (2) first via input group and output group, the normally closed switch group of relay connects described commutation circuit (2) second road input group and output groups,
The second road input group meets output group V1-0, the V2-0 of described vehicle-mounted driving information source (3).
9. the automobile-used ECU of one according to claim 8 controls formula speed limit circuit; it is characterized in that: described message source process circuit (1) is also provided with holding circuit; this holding circuit comprises multichannel AND circuit (U9); the multi-channel input of multichannel AND circuit (U9) connect respectively described fork shift switch close shelves and N speed limit shelves; the base stage of output termination the 7th triode (Q7) of multichannel AND circuit (U9); the grounded emitter of the 7th triode (Q7), colelctor electrode connects the closing control end of described commutation circuit (2).
10. the automobile-used ECU of one according to claim 1 controls formula speed limit circuit, it is characterized in that: described monitoring information source circuit (5) or for throttle observation circuit, or be vehicle speed sensor circuit, or be wheel speed sensors circuit, or be engine load sensor circuit;
Described vehicle-mounted driving information source (3) is throttle;
Described vehicle-mounted actuator (4) is air throttle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020867.XU CN205256028U (en) | 2015-12-09 | 2015-12-09 | Automobile -used ECU control formula speed limit circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020867.XU CN205256028U (en) | 2015-12-09 | 2015-12-09 | Automobile -used ECU control formula speed limit circuit |
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| Publication Number | Publication Date |
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| CN205256028U true CN205256028U (en) | 2016-05-25 |
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|---|---|---|---|
| CN201521020867.XU Expired - Fee Related CN205256028U (en) | 2015-12-09 | 2015-12-09 | Automobile -used ECU control formula speed limit circuit |
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| CN (1) | CN205256028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459823A (en) * | 2015-12-09 | 2016-04-06 | 重庆昊泽汽车配件有限公司 | Instructional vehicle speed limiting system |
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2015
- 2015-12-09 CN CN201521020867.XU patent/CN205256028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459823A (en) * | 2015-12-09 | 2016-04-06 | 重庆昊泽汽车配件有限公司 | Instructional vehicle speed limiting system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20191209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |