CN209942956U - Automobile auxiliary control device based on rail pressure signal comparison - Google Patents
Automobile auxiliary control device based on rail pressure signal comparison Download PDFInfo
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- CN209942956U CN209942956U CN201920738205.8U CN201920738205U CN209942956U CN 209942956 U CN209942956 U CN 209942956U CN 201920738205 U CN201920738205 U CN 201920738205U CN 209942956 U CN209942956 U CN 209942956U
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Abstract
The utility model is suitable for an automobile control technical field provides a car auxiliary control device based on rail pressure signal is relatively, including setting up the control unit between rail pressure sensor and car ECU, the control unit receives the rail pressure signal of rail pressure sensor output, compares rail pressure signal and default, carries out the amplification of settlement multiple to rail pressure signal according to the comparative result to rail pressure signal after will enlargiing conveys to car ECU in. The device receives a rail pressure signal value output by a rail pressure sensor, compares the rail pressure signal value with a preset value, amplifies the rail pressure signal value by a correspondingly set multiple according to a comparison result, transmits an amplified rail pressure signal to the automobile ECU, and controls the automobile according to the amplified signal, so that the automobile can change different road conditions correspondingly, and the maximum potential of an engine is exerted.
Description
Technical Field
The utility model belongs to the technical field of automobile control, especially, relate to an automobile auxiliary control device based on rail pressure signal is relatively.
Background
An ecu (electronic control unit), also called a vehicle computer, is installed inside a vehicle and generally used for controlling fuel injection amount, mixture ratio, etc., and is composed of a microprocessor, a memory, an input/output interface, an analog-to-digital converter, and a large-scale integrated circuit for shaping and driving.
The existing automobile rail pressure sensor converts the detected pressure into an electric signal and transmits the electric signal to an automobile ECU, and the engine ECU corrects the rotating speed of an engine according to the received voltage signal so as to adjust the output torque of the engine.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides an automobile auxiliary control device based on rail pressure signal is relatively to solve among the prior art automobile ECU can not take different control strategies, can't exert the biggest potential energy of engine to the vehicle condition of difference.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the control unit receives a rail pressure signal output by the rail pressure sensor, compares the rail pressure signal with a preset value, amplifies the rail pressure signal by a set multiple according to a comparison result, and transmits the amplified rail pressure signal to the automobile ECU.
Further, the control unit comprises a comparison module, a first amplification module and a second amplification module, wherein the signal output end of the rail pressure sensor is respectively connected with the input end of the comparison module, the first input end of the first amplification module and the first input end of the second amplification module, the output end of the comparison module is respectively connected with the second input end of the first amplification module and the second input end of the second amplification module, and the output end of the first amplification module and the output end of the second amplification module are both connected with an automobile ECU;
the first amplification module, the second amplification module and the comparison module receive rail pressure signals output by a rail pressure sensor, the comparison module compares a preset value with the received rail pressure signals output by the rail pressure sensor and then controls the first amplification module or the second amplification module to work, the first amplification module or the second amplification module amplifies the rail pressure signals by a set multiple, and the amplified rail pressure signals are transmitted to an automobile ECU.
Further, the comparison module comprises a comparator U1And a first regulating module, the comparator U1The positive input end of the comparator is connected with the signal output end of the rail pressure sensor, and the comparator U1The reverse input end of the comparator U is connected with the output end of the first regulating module1Respectively connected to the second input terminal of the first amplification module and the second input terminal of the second amplification module.
Further, the first adjusting module comprises a resistor R1And a sliding rheostat RaSaid resistance R1One end of the resistor R is connected with a power supply VCC, and the resistor R1Is respectively connected with the comparator U1And the sliding rheostat RaOne end of the slide rheostat RaAnd the other end of the same is grounded.
Further, the first amplifying module comprises a first switch module and an amplifier U2Resistance R2Resistance R3Resistance R4And a sliding rheostat RbThe input end of the first switch module is connected with the output end of the comparison module, and the output end of the first switch module is connected with the amplifier U2Said amplifier U3Is connected to a power supply VCC, the amplifier U2The positive input ends of the resistors are respectively connected with the resistors R3And the resistor R4One end of said resistor R4The other end of the resistor R is grounded, and the resistor R is connected with the ground3The other end of the amplifier is connected with the signal output end of the rail pressure sensor, and the amplifier U2Are respectively connected with the resistors R2And the sliding rheostat RbOne end of said resistor R2Is grounded, the other end of the slide rheostat R is groundedbAre respectively connected with the amplifier U2And an automotive ECU.
Further, the first switch module comprises a switch triode Q1Said switching transistor Q1The base electrode of the switching triode Q is connected with the output end of the comparison module1Is grounded, the switching triode Q1Collector of is connected with the amplifier U2To a power supply terminal of the power supply.
Further, the second amplifying module comprises a second switch module and an amplifier U3Resistance R5Resistance R6Resistance R7And a sliding rheostat RcThe input end of the second switch module is connected with the output end of the comparison module, and the output end of the second switch module is connected with the amplifier U3Said amplifier U3Is connected to ground, said amplifier U3The positive input ends of the resistors are respectively connected with the resistors R5And the resistor R6One end of said resistor R6The other end of the resistor R is grounded, and the resistor R is connected with the ground5The other end of the amplifier is connected with the signal output end of the rail pressure sensor, and the amplifier U3Are respectively connected with the resistors R7And the sliding rheostat RcOne end of said resistor R7Is grounded, the other end of the slide rheostat R is groundedcAre respectively connected with the amplifier U3And an automotive ECU.
Further, the second switch module comprises a switching transistor Q2Said switching transistor Q2The base electrode of the switching triode Q is connected with the output end of the comparison module2The emitter of the transistor is connected with a power supply VCC, and the switching triode Q2Collector of is connected with the amplifier U3To a power supply terminal of the power supply.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model discloses a car auxiliary control device based on rail pressure signal is relatively, the device receive the rail pressure signal value of rail pressure sensor output, and will rail pressure signal value and default are compared, and the multiple of carrying out corresponding settlement to rail pressure signal value according to the result of comparison is enlargied to rail pressure signal transfer after will enlargiing is to car ECU, and car ECU controls the car according to the signal after enlargiing, satisfies the car and carries out corresponding change to different road conditions, the biggest latent energy of performance engine.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a circuit connection diagram of an automobile auxiliary control device based on rail pressure signal comparison according to an embodiment of the present invention.
In the figure: 100. a comparison module; 200. a first amplification module; 300. and a second amplification module.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
As shown in fig. 1, an auxiliary control device for an automobile based on rail pressure signal comparison comprises a control unit arranged between a rail pressure sensor and an automobile ECU, wherein the control unit receives a rail pressure signal output by the rail pressure sensor, compares the rail pressure signal with a preset value, amplifies the rail pressure signal by a set multiple according to the comparison result, and transmits the amplified rail pressure signal to the automobile ECU.
The device receives a rail pressure signal value output by a rail pressure sensor, compares the rail pressure signal value with a preset value, amplifies the rail pressure signal value by a correspondingly set multiple according to a comparison result, transmits an amplified rail pressure signal to the automobile ECU, and controls the automobile according to the amplified signal, so that the automobile can change different road conditions correspondingly, and the maximum potential of an engine is exerted.
For example, when the automobile starts, goes up a slope or is in poor road conditions, the fuel injection quantity of the system of the automobile cannot meet the power requirement, the device can reversely amplify (reduce) the signal output by the rail pressure sensor and transmit the amplified signal to the automobile ECU, and the automobile ECU receives the amplified rail pressure signal to control the fuel injection quantity to be increased, so that the power of the automobile is improved, and the poor road conditions are met; when the road condition is good, the fuel injection quantity of the automobile is larger than the road condition, fuel oil waste is caused, the rail pressure signal of the rail pressure sensor is amplified in the forward direction by the device, the amplified rail pressure signal is transmitted to the automobile ECU, and the automobile ECU receives the amplified rail pressure signal to control and reduce the fuel injection quantity. By the mode, the device realizes the auxiliary control of the automobile according to road conditions and exerts the maximum potential of the engine.
In an embodiment of the present invention, the control unit includes a comparison module 100, a first amplification module 200 and a second amplification module 300, the signal output end of the rail pressure sensor is respectively connected to the input end of the comparison module 100, the first input end of the first amplification module 200 and the first input end of the second amplification module 300, the output end of the comparison module 100 is respectively connected to the second input end of the first amplification module 200 and the second input end of the second amplification module 300, and the output end of the first amplification module 200 and the output end of the second amplification module 300 are both connected to the vehicle ECU; the first amplification module 200, the second amplification module 300 and the comparison module 100 all receive rail pressure signals output by rail pressure sensors, the comparison module 100 compares preset values with the received rail pressure signals output by the rail pressure sensors and then controls the first amplification module 200 or the second amplification module 300 to work, the first amplification module 200 or the second amplification module 300 amplifies the rail pressure signals by a set multiple, and the amplified rail pressure signals are transmitted to an automobile ECU.
The device is provided with two amplification modes, the comparison module 100 can compare the rail pressure signal output by the rail pressure sensor with a preset value, so that whether the first amplification module 200 and the second amplification module 300 work or not is judged, the rail pressure signal output by the rail pressure sensor is correspondingly amplified, the amplified rail pressure signal is transmitted to the automobile ECU, and the automobile ECU controls the automobile according to the amplified rail pressure signal so as to adapt to different road conditions.
In one embodiment of the present invention, the comparison module 100 comprises a comparator U1And a first regulating module, a comparator U1The positive input end of the comparator is connected with the signal output end of the rail pressure sensor, and the comparator U1The reverse input end of the comparator is connected with the output end of the first regulating module, and the comparator U1Respectively, are connected to a second input terminal of the first amplification module 200 and a second input terminal of the second amplification module 300.
Comparator U1The rail pressure signal is compared with a preset value, and a high level or a low level is output according to a comparison result, so that the first amplification module 200 and the second amplification module 300 are controlled to work, the amplification of corresponding multiples of the rail pressure signal is realized, and the rail pressure signal is suitable for different road conditions.
In one embodiment of the present invention, the first adjusting module comprises a resistor R1And a sliding rheostat RaResistance R1One end of the resistor is connected with a power supply VCC and a resistor R1The other ends of the two are respectively connected with a comparator U1And a sliding varistor RaOne end, slide rheostat RaAnd the other end of the same is grounded.
By adjusting sliding rheostat RaThe set value can be set, the rail pressure signal can be compared with the set value, and the work of the first amplification module 200 and the second amplification module 300 can be controlled.
In one embodiment of the present invention, the first amplifying module 200 comprises a first switch module, an amplifier U2Resistance R2Resistance R3Resistance R4And a sliding rheostat RbThe input end of the first switch module is connected to the output end of the comparison module 100, and the output end of the first switch module is connected to the amplifier U2A power supply terminal of, an amplifier U3The other power supply terminal is connected with a power supply VCC, and an amplifier U2The positive input ends of the resistors are respectively connected with a resistor R3And a resistor R4One terminal of (1), resistance R4The other end of (3) is grounded, and a resistor R3The other end of the voltage sensor is connected with the signal output end of the rail pressure sensor, and an amplifier U2The reverse input ends of the resistors are respectively connected with the resistors R2And a sliding rheostat RbOne terminal of (1), resistance R2The other end of the second contact is grounded, and the sliding rheostat RbThe other ends of the two are respectively connected with an amplifier U2And an automotive ECU.
By adjusting sliding rheostat RbThe amplification factor of the first amplification module 200 can be changed to meet the requirements of different road conditions.
In one embodiment of the present invention, the first switch module comprises a switch transistor Q1Switching transistor Q1Is connected to the output terminal of the comparison module 100, and a switching transistor Q1The emitting electrode of the triode is grounded, and the triode Q is switched1Collector of the amplifier U is connected with2To a power supply terminal of the power supply.
When the output of the comparison module 100 is high level, the transistor Q is switched1On, amplifier U2When the power is on, the first amplification module 200 works to amplify the rail voltage signal by a set multiple.
In one embodiment of the present invention, the second amplification module 300 comprises a second switch module, an amplifier U3Resistance R5Resistance R6Resistance R7And a sliding rheostat RcThe input end of the second switch module is connected with the output end of the comparison module 100, and the output end of the second switch module is connected with the amplifier U3A power supply terminal of, an amplifier U3Is grounded, and an amplifier U3The positive input ends of the resistors are respectively connected with a resistor R5And a resistor R6One terminal of (1), resistance R6The other end of (3) is grounded, and a resistor R5The other end of the voltage sensor is connected with the signal output end of the rail pressure sensor, and an amplifier U3The reverse input ends of the resistors are respectively connected with the resistors R7And a sliding rheostat RcOne terminal of (1), resistance R7The other end of the second contact is grounded, and the sliding rheostat RcThe other ends of the two are respectively connected with an amplifier U3And an automotive ECU.
By adjusting sliding rheostat RcThe amplification factor of the first amplification module 200 can be changed to meet the requirements of different road conditions.
In one embodiment of the present invention, the second switch module comprises a switch transistor Q2Switching transistor Q2Is connected to the output terminal of the comparison module 100, and a switching transistor Q2The emitting electrode of the triode is connected with a power supply VCC and a switching triode Q2Collector of the amplifier U is connected with3To a power supply terminal of the power supply.
When the output of the comparison module 100 is high level, the transistor Q is switched2On, amplifier U3When the power is on, the first amplification module 200 works to amplify the rail voltage signal by a set multiple.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. The automobile auxiliary control device based on rail pressure signal comparison is characterized by comprising a control unit arranged between a rail pressure sensor and an automobile ECU (electronic control unit), wherein the control unit receives a rail pressure signal output by the rail pressure sensor, compares the rail pressure signal with a preset value, amplifies the rail pressure signal by a set multiple according to a comparison result, and transmits the amplified rail pressure signal to the automobile ECU.
2. The rail pressure signal comparison-based automobile auxiliary control device according to claim 1, wherein the control unit comprises a comparison module, a first amplification module and a second amplification module, the signal output ends of the rail pressure sensor are respectively connected with the input end of the comparison module, the first input end of the first amplification module and the first input end of the second amplification module, the output end of the comparison module is respectively connected with the second input end of the first amplification module and the second input end of the second amplification module, and the output end of the first amplification module and the output end of the second amplification module are both connected with an automobile ECU;
the first amplification module, the second amplification module and the comparison module receive rail pressure signals output by a rail pressure sensor, the comparison module compares a preset value with the received rail pressure signals output by the rail pressure sensor and then controls the first amplification module or the second amplification module to work, the first amplification module or the second amplification module amplifies the rail pressure signals by a set multiple, and the amplified rail pressure signals are transmitted to an automobile ECU.
3. The rail pressure signal comparison-based auxiliary control device for automobile according to claim 2, wherein the comparison module comprises a comparator U1And a first regulating module, the comparator U1The positive input end of the comparator is connected with the signal output end of the rail pressure sensor, and the comparator U1The reverse input end of the comparator U is connected with the output end of the first regulating module1Respectively connected to the second input terminal of the first amplification module and the second input terminal of the second amplification module.
4. The rail voltage signal comparison-based auxiliary control device for automobile according to claim 3, wherein the first adjusting module comprises a resistor R1And a sliding rheostat RaSaid resistance R1One end of the resistor R is connected with a power supply VCC, and the resistor R1Is respectively connected with the comparator U1And the sliding rheostat RaOne end of the slide rheostat RaAnd the other end of the same is grounded.
5. The rail voltage signal comparison-based auxiliary control device for the vehicle as claimed in claim 2, wherein the first amplifying module comprises a first switch module, an amplifier U2Resistance R2Resistance R3Resistance R4And a sliding rheostat RbThe input end of the first switch module is connected with the output end of the comparison module, and the output end of the first switch module is connected with the amplifier U2Said amplifier U3Is connected to a power supply VCC, the amplifier U2The positive input ends of the resistors are respectively connected with the resistors R3And the resistor R4One end of said resistor R4The other end of the resistor R is grounded, and the resistor R is connected with the ground3The other end of the amplifier is connected with the signal output end of the rail pressure sensor, and the amplifier U2Are respectively connected with the resistors R2And the sliding rheostat RbOne end of said resistor R2Is grounded, the other end of the slide rheostat R is groundedbAre respectively connected with the amplifier U2And an automotive ECU.
6. The rail voltage signal comparison-based auxiliary control device for automobile according to claim 5, wherein the first switch module comprises a switching transistor Q1Said switching transistor Q1The base electrode of the switching triode Q is connected with the output end of the comparison module1Of said switch, said switch having three polesTube Q1Collector of is connected with the amplifier U2To a power supply terminal of the power supply.
7. The rail voltage signal comparison-based auxiliary control device for automobile according to claim 2, wherein the second amplifying module comprises a second switch module, an amplifier U3Resistance R5Resistance R6Resistance R7And a sliding rheostat RcThe input end of the second switch module is connected with the output end of the comparison module, and the output end of the second switch module is connected with the amplifier U3Said amplifier U3Is connected to ground, said amplifier U3The positive input ends of the resistors are respectively connected with the resistors R5And the resistor R6One end of said resistor R6The other end of the resistor R is grounded, and the resistor R is connected with the ground5The other end of the amplifier is connected with the signal output end of the rail pressure sensor, and the amplifier U3Are respectively connected with the resistors R7And the sliding rheostat RcOne end of said resistor R7Is grounded, the other end of the slide rheostat R is groundedcAre respectively connected with the amplifier U3And an automotive ECU.
8. The rail voltage signal comparison-based auxiliary control device for automobile according to claim 7, wherein the second switch module comprises a switching transistor Q2Said switching transistor Q2The base electrode of the switching triode Q is connected with the output end of the comparison module2The emitter of the transistor is connected with a power supply VCC, and the switching triode Q2Collector of is connected with the amplifier U3To a power supply terminal of the power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920738205.8U CN209942956U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on rail pressure signal comparison |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920738205.8U CN209942956U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on rail pressure signal comparison |
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| CN209942956U true CN209942956U (en) | 2020-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080890A (en) * | 2019-05-21 | 2019-08-02 | 车行天下网络科技股份有限公司 | The automobile sub-controlling unit compared based on rail pressure signal |
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- 2019-05-21 CN CN201920738205.8U patent/CN209942956U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080890A (en) * | 2019-05-21 | 2019-08-02 | 车行天下网络科技股份有限公司 | The automobile sub-controlling unit compared based on rail pressure signal |
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