CN209942954U - Automobile auxiliary control device based on air inlet pressure signal comparison - Google Patents
Automobile auxiliary control device based on air inlet pressure signal comparison Download PDFInfo
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- CN209942954U CN209942954U CN201920734596.6U CN201920734596U CN209942954U CN 209942954 U CN209942954 U CN 209942954U CN 201920734596 U CN201920734596 U CN 201920734596U CN 209942954 U CN209942954 U CN 209942954U
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Abstract
The utility model is suitable for a car control technology field provides a car auxiliary control device based on admission pressure signal is relatively, including setting up the control unit between admission pressure sensor and car ECU, the admission pressure signal of admission pressure sensor output is received to the control unit, compares admission pressure signal and default, carries out the magnification of settlement multiple to the admission pressure signal according to the comparative result to the admission pressure signal after will amplifying conveys to in the car 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 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, so that the requirement that the automobile correspondingly changes different road conditions is met, 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 admission pressure signal is relatively.
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 air inlet 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 intake 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 an intake pressure signal output by the intake pressure sensor, compares the intake pressure signal with a preset value, amplifies the intake pressure signal by a set multiple according to a comparison result, and transmits the amplified intake 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 intake 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;
the first amplification module, the second amplification module and the comparison module receive intake pressure signals output by the intake pressure sensor, the comparison module compares preset values with the received intake pressure signals output by the intake 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 intake pressure signals by a set multiple, and the amplified intake 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 U is connected with the signal output end of the air inlet 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 air inlet pressure sensor, and the amplifier U2Are respectively connected with the resistors R2And the sliding rheostat RbToTerminal, the resistance 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 air inlet 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 admission pressure signal is relatively, the device receive the admission pressure signal value of admission pressure sensor output, and will admission pressure signal value and default are compared, and the multiple of carrying out corresponding settlement to admission pressure signal value according to the result of comparison is enlargied to in the admission pressure signal transmission after will amplifying to car ECU, 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 auxiliary control device for an automobile based on intake 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 a vehicle based on intake pressure signal comparison includes a control unit disposed between an intake pressure sensor and a vehicle ECU, wherein the control unit receives an intake pressure signal output by the intake pressure sensor, compares the intake pressure signal with a 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 vehicle 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 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, so that the requirement that the automobile correspondingly changes different road conditions is met, 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 amplify the signal output by the air inlet pressure sensor in the forward direction and transmit the amplified signal to the automobile ECU, and the automobile ECU receives the amplified air inlet pressure signal to control and increase the fuel injection quantity, 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, at the moment, the device 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.
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 intake 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 intake pressure signals output by the intake pressure sensor, the comparison module 100 compares a preset value with the received intake pressure signals output by the intake pressure sensor 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 intake pressure signals by a set multiple, and the amplified intake pressure signals are transmitted to the automobile ECU.
The device is provided with two amplification modes, the comparison module 100 can compare an air inlet pressure signal output by the air inlet 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 air inlet pressure signal output by the air inlet pressure sensor is correspondingly amplified, the amplified air inlet pressure signal is transmitted to the automobile ECU, and the automobile ECU controls the automobile according to the amplified air inlet 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 positive-direction input end of the negative-direction input end is connected with the signal output end of the air inlet pressure sensor, and a 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 intake 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 corresponding multiple amplification of the intake pressure signal is realized, and the device 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 setting of the set value can be performed to realize the comparison between the intake pressure signal and the set value, and control the operation of the first amplification module 200 and the second amplification module 300.
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 a signal output end of the air inlet 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 turned on, the first amplification module 200 works to amplify the air inlet pressure signal by a set multiple.
In one embodiment of the present invention, the second amplification module 300 comprisesTwo-switch module and 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 a signal output end of the air inlet 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 turned on, the first amplification module 200 works to amplify the air inlet 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. The automobile auxiliary control device based on intake pressure signal comparison is characterized by comprising a control unit arranged between an intake pressure sensor and an automobile ECU (electronic control Unit), wherein the control unit receives an intake pressure signal output by the intake pressure sensor, compares the intake pressure signal with a preset value, amplifies the intake pressure signal by a set multiple according to a comparison result, and transmits the amplified intake pressure signal to the automobile ECU.
2. The automobile auxiliary control device based on intake pressure signal comparison as claimed in claim 1, wherein the control unit comprises a comparison module, a first amplification module and a second amplification module, the signal output end of the intake 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 intake pressure signals output by the intake pressure sensor, the comparison module compares preset values with the received intake pressure signals output by the intake 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 intake pressure signals by a set multiple, and the amplified intake pressure signals are transmitted to an automobile ECU.
3. The intake pressure signal comparison-based auxiliary control device for an automobile according to claim 2, wherein the comparison module comprises a comparator U1And a first adjusting module, which is used for adjusting the position of the optical fiber,the comparator U1The positive input end of the comparator U is connected with the signal output end of the air inlet 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 intake pressure signal comparison-based auxiliary control device for a vehicle 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 intake-pressure-signal-comparison-based auxiliary control device for the vehicle of 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 the signal output end of the air inlet 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 intake-pressure-signal-comparison-based auxiliary control device for an automobile 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 auxiliary control device for automobile based on intake pressure signal comparison as claimed in 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 air inlet 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 intake-pressure-signal-comparison-based auxiliary control device for a vehicle 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 module2Is connected to a power supply VCC, thereforThe switching triode Q2Collector of is connected with the amplifier U3To a power supply terminal of the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920734596.6U CN209942954U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on air inlet pressure signal comparison |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920734596.6U CN209942954U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on air inlet pressure signal comparison |
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| CN209942954U true CN209942954U (en) | 2020-01-14 |
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| CN201920734596.6U Active CN209942954U (en) | 2019-05-21 | 2019-05-21 | Automobile auxiliary control device based on air inlet pressure signal comparison |
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