CN209942955U - Automobile auxiliary control device based on comparison of rail pressure signal and air inlet pressure signal - Google Patents
Automobile auxiliary control device based on comparison of rail pressure signal and air inlet pressure signal Download PDFInfo
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- CN209942955U CN209942955U CN201920734658.3U CN201920734658U CN209942955U CN 209942955 U CN209942955 U CN 209942955U CN 201920734658 U CN201920734658 U CN 201920734658U CN 209942955 U CN209942955 U CN 209942955U
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Abstract
The utility model is suitable for a car control technical field provides an automobile auxiliary control device based on rail pressure signal and admission pressure signal comparison, and the input of first signal comparison unit is connected the signal output part of admission pressure sensor, and the output of first signal comparison unit is connected car ECU; the input end of the second signal comparison unit is connected with the signal output end of the rail pressure sensor, and the output end of the second signal comparison unit is connected with the automobile ECU. The device satisfies that the automobile carries out corresponding change to different road conditions, exerts the biggest potentiality of engine.
Description
Technical Field
The utility model belongs to the technical field of vehicle control, especially, relate to a car auxiliary control device based on rail pressure signal is compared with the pressure signal that admits air.
Background
An electronic Control unit (ecu) is an electronic Control unit, also called a vehicle computer, installed inside a vehicle, 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, driving, etc.
The existing automobile rail pressure sensor converts the detected pressure into an electric signal and transmits the electric signal to an engine ECU (electronic control Unit), an automobile air inlet pressure sensor converts the detected pressure into an electric signal and transmits the electric signal to the automobile ECU, and the automobile ECU corrects the rotating speed of an engine according to the signals of the rail pressure sensor and the air inlet pressure sensor 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 and pressure signal comparison admits air to solve among the prior art automobile ECU can not take different control strategies, can't exert the biggest latent 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: automobile auxiliary control device based on rail pressure signal and air intake pressure signal comparison includes:
the input end of the first signal comparison unit is connected with the signal output end of the air inlet pressure sensor, the output end of the first signal comparison unit is connected with the automobile ECU, the first signal comparison unit receives an air inlet pressure signal collected by the air inlet pressure sensor, compares the air inlet pressure signal with a first preset value, amplifies the air inlet pressure signal by a set multiple according to a comparison result, and transmits the amplified air inlet pressure signal to the automobile ECU;
the input end of the second signal comparison unit is connected with the signal output end of the rail pressure sensor, the output end of the second signal comparison unit is connected with the automobile ECU, the second signal comparison unit receives the rail pressure signal collected by the rail pressure sensor, compares the rail pressure signal with a second 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.
Furthermore, the first signal comparison unit and the second signal comparison unit both comprise a comparison module, a first amplification module and a second amplification module, the signal output end of the air inlet pressure sensor or 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 the automobile ECU.
Further, the comparison module comprises a comparator U1And a first regulating module, the comparator U1The positive input end of the comparator U is connected with the signal output end of the air inlet pressure sensor or 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 R4At one end of the first and second arms,the 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 a signal output end of an air inlet pressure sensor or a signal output end of a 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 a signal output end of an air inlet pressure sensor or a signal output end of a 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 Q2Base electrode of (2) is connected withThe output end of the comparison module is the switching triode Q2The 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 and admission pressure signal are relatively: the device receives an air inlet pressure signal value output by an air inlet pressure sensor, compares the air inlet pressure signal value with a first preset value, amplifies the air inlet pressure signal value by a correspondingly set multiple according to a comparison result, transmits the amplified air inlet pressure signal to an automobile ECU (electronic control unit), and controls an automobile according to the amplified signal; the device receives a rail pressure signal value output by a rail pressure sensor, compares the rail pressure signal value with a second preset value, amplifies the rail pressure signal value by a correspondingly set multiple according to a comparison result, transmits the amplified rail pressure signal to the automobile ECU, and controls the automobile according to the amplified signal by the automobile ECU; the auxiliary control of the automobile can be realized through the two control modes, the requirement that the automobile correspondingly changes different road conditions is met, and the maximum potential of the engine is exerted.
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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 comparison between a rail pressure signal and an intake pressure signal 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, the vehicle auxiliary control apparatus based on the comparison of the rail pressure signal and the intake pressure signal includes:
the first signal comparison unit receives the intake pressure signal acquired by the intake pressure sensor, compares the intake pressure signal with a first preset value, amplifies the intake pressure signal by a set multiple according to the comparison result, and transmits the amplified intake pressure signal to the automobile ECU;
the input end of the second signal comparison unit is connected with the signal output end of the rail pressure sensor, the output end of the second signal comparison unit is connected with the automobile ECU, the second signal comparison unit receives rail pressure signals collected by the rail pressure sensor, compares the rail pressure signals with a second preset value, amplifies the rail pressure signals by a set multiple according to a comparison result, and transmits the amplified rail pressure signals to the automobile ECU.
The device receives an air inlet pressure signal value output by an air inlet pressure sensor, compares the air inlet pressure signal value with a first preset value, amplifies the air inlet pressure signal value by a correspondingly set multiple according to a comparison result, transmits the amplified air inlet pressure signal to the automobile ECU, and controls the automobile according to the amplified signal by 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 second preset value, amplifies the rail pressure signal value by a correspondingly set multiple according to a comparison result, transmits the amplified rail pressure signal to the automobile ECU, and controls the automobile according to the amplified signal by the automobile ECU; the auxiliary control of the automobile can be realized through the two control modes, the requirement that the automobile correspondingly changes different road conditions is met, and the maximum potential of the engine is exerted.
The first signal comparison unit and the second signal comparison unit are both provided with a main switch, the main switch is used for controlling whether the first signal unit and the second signal unit work or not, and the main switch can be controlled to select signals according to the rail pressure sensor or signals according to the air inlet pressure sensor to perform auxiliary control on the automobile.
For example, when the vehicle starts, goes up a slope or is in a poor road condition, the fuel injection quantity of a system of the vehicle cannot meet the power requirement, the first signal comparison unit can reversely amplify (reduce) a signal output by the rail pressure sensor and transmit the reduced signal to the vehicle ECU, and the vehicle ECU receives the reduced rail pressure signal to control the fuel injection quantity to be increased, so that the power of the vehicle is improved and the poor road condition is 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 first signal comparison unit carries out forward amplification on a rail pressure signal of the rail pressure sensor, 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.
For another example, when the vehicle starts, goes up a slope or has poor road conditions, the fuel injection quantity of the system of the vehicle cannot meet the power requirement, the second signal comparison unit can amplify the signal output by the air inlet pressure sensor in the forward direction and transmit the amplified signal to the vehicle ECU, and the vehicle ECU receives the amplified air inlet pressure signal to control the fuel injection quantity to be increased, so that the power of the vehicle 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 second signal comparison unit reversely amplifies (i.e. reduces) the air inlet pressure signal of the air inlet pressure sensor, the reduced air inlet pressure signal is transmitted to the automobile ECU, and the automobile ECU receives the reduced air inlet 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.
The utility model discloses an in one embodiment, first signal comparing element and second signal comparing element all include comparison module 100, first amplification module 200 and second amplification module 300, the input of comparison module 100 is connected respectively to intake pressure sensor's signal output part or rail pressure sensor's signal output part, the first input of first amplification module 200 and the first input of second amplification module 300, the second input of first amplification module 200 and the second input of second amplification module 300 are connected respectively to comparison module 100's output, car ECU is all connected to first amplification module 200's output and the output of second amplification module 300.
The first signal comparison unit and the second signal comparison unit are both provided with two amplification modes, the comparison module 100 can compare an intake pressure signal output by the intake pressure sensor with a first preset value or compare a rail pressure signal output by the rail pressure sensor with a second preset value, so as to judge whether the first amplification module 200 and the second amplification module 300 work or not, so as to realize the corresponding amplification of the intake pressure signal output by the intake pressure sensor or the rail pressure signal output by the rail pressure sensor, and then transmit the amplified intake pressure signal or the amplified rail pressure signal to the automobile ECU, and the automobile ECU controls the automobile according to the amplified intake pressure signal or 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 air inlet pressure sensor or 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 connected to the second input terminal of the first amplification module 200 and the second input terminal of the second amplification module 300Two input ends.
Comparator U1The air inlet pressure signal is compared with the first preset value or the rail pressure signal is compared with the second 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 air inlet pressure signal or the rail pressure signal is amplified by corresponding multiples, and the road condition is adaptive to 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 first or second set point may be set to compare the intake pressure signal with the first set point or to compare the rail pressure signal with the second set point, and the first and second amplification modules 200 and 300 may be controlled to operate.
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 pressure sensor is connected with the signal output end of the air inlet pressure sensor or 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 output terminal ofAn automobile 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 turned on, the first amplification module 200 works to amplify the air inlet pressure signal or the rail pressure 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 pressure sensor is connected with the signal output end of the air inlet pressure sensor or 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 Q2Switch, switchTriode 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 turned on, the first amplification module 200 works to amplify the air inlet pressure signal or the rail pressure 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. An automobile auxiliary control device based on rail pressure signal and air inlet pressure signal comparison is characterized by comprising:
the input end of the first signal comparison unit is connected with the signal output end of the air inlet pressure sensor, the output end of the first signal comparison unit is connected with the automobile ECU, the first signal comparison unit receives an air inlet pressure signal collected by the air inlet pressure sensor, compares the air inlet pressure signal with a first preset value, amplifies the air inlet pressure signal by a set multiple according to a comparison result, and transmits the amplified air inlet pressure signal to the automobile ECU;
the input end of the second signal comparison unit is connected with the signal output end of the rail pressure sensor, the output end of the second signal comparison unit is connected with the automobile ECU, the second signal comparison unit receives the rail pressure signal collected by the rail pressure sensor, compares the rail pressure signal with a second 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 vehicle auxiliary control device based on rail pressure signal and intake pressure signal comparison of claim 1, wherein the first signal comparison unit and the second signal comparison unit each include a comparison module, a first amplification module and a second amplification module, a signal output end of an intake pressure sensor or a signal output end of a rail pressure sensor is respectively connected with an input end of the comparison module, a first input end of the first amplification module and a first input end of the second amplification module, an output end of the comparison module is respectively connected with a second input end of the first amplification module and a second input end of the second amplification module, and an output end of the first amplification module and an output end of the second amplification module are both connected with a vehicle ECU.
3. The vehicle auxiliary control apparatus based on rail pressure signal and intake pressure signal comparison of claim 2, wherein the comparison module comprises a comparator U1And a first regulating module, the comparator U1The positive input end of the comparator U is connected with the signal output end of the air inlet pressure sensor or 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 vehicle auxiliary control apparatus based on rail pressure signal and intake pressure signal comparison of claim 3, wherein the first adjustment 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 vehicle auxiliary control device based on the rail pressure signal and the intake pressure signal comparison as claimed in claim 2, wherein the first amplification 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 a signal output end of an air inlet pressure sensor or a signal output end of a 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 vehicle auxiliary control apparatus based on rail pressure signal and intake pressure signal comparison of claim 5, wherein the first switching 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 module1Is grounded, the switching triode Q1Collector of is connected with the amplifier U2To a power supply terminal of the power supply.
7. The vehicle auxiliary control device based on the rail pressure signal and the intake pressure signal comparison as claimed in claim 2, wherein the second amplification 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 a signal output end of an air inlet pressure sensor or a signal output end of a 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 vehicle auxiliary control apparatus based on rail pressure signal and intake pressure signal comparison of claim 7, wherein the second switching 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 |
|---|---|---|---|
| CN201920734658.3U CN209942955U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on comparison of rail pressure signal and air inlet pressure signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920734658.3U CN209942955U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on comparison of rail pressure signal and air inlet pressure signal |
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| CN209942955U true CN209942955U (en) | 2020-01-14 |
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| CN201920734658.3U Active CN209942955U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on comparison of rail pressure signal and air inlet pressure signal |
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| CN (1) | CN209942955U (en) |
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