CN211809566U - Automobile pressure sensor circuit - Google Patents
Automobile pressure sensor circuit Download PDFInfo
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- CN211809566U CN211809566U CN201922491984.9U CN201922491984U CN211809566U CN 211809566 U CN211809566 U CN 211809566U CN 201922491984 U CN201922491984 U CN 201922491984U CN 211809566 U CN211809566 U CN 211809566U
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- pressure sensor
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- integrated circuit
- signal processing
- circuit
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Abstract
The utility model discloses a car pressure sensor circuit, including atmospheric pressure sensor signal processing circuit and vacuum pressure sensor signal processing circuit, atmospheric pressure sensor signal processing circuit and vacuum pressure sensor signal processing circuit pass through the power supply of external power supply. The utility model discloses with low costs, occupation space is little, acquires pressure sensor's signal more accurate, reliable, and the security is higher, the reliability is stronger.
Description
Technical Field
The utility model relates to a car vacuum boosting braking system, especially a car pressure sensor circuit.
Background
CN209366129U discloses an application circuit of an automobile vacuum pressure sensor, which includes a driving circuit and an amplifying circuit, wherein the driving circuit includes an operational amplifier OP1A, a piezoresistive pressure sensor U1, a resistor R1, a resistor R2 and a resistor R3, and the amplifying circuit includes an operational amplifier OP2C, an operational amplifier OP3B, an operational amplifier OP4D, a resistor RA, a resistor RB1, a resistor RB2, a resistor VR1, a resistor R14, a resistor R15, a resistor R24, a resistor R25, a resistor R6 and a resistor VR 2. The technical scheme has high cost, large occupied space and inaccurate signal acquisition.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a with low costs, occupation space is little, acquires pressure sensor's signal more accurate, reliable, and the security is higher, the stronger car pressure sensor circuit of reliability.
The purpose of the utility model is realized through the following technical scheme.
The automobile pressure sensor circuit comprises an atmospheric pressure sensor signal processing circuit and a vacuum pressure sensor signal processing circuit, wherein the atmospheric pressure sensor signal processing circuit and the vacuum pressure sensor signal processing circuit are powered by an external power supply.
The atmospheric pressure sensor signal processing circuit comprises a third integrated circuit, an eighth pin of the third integrated circuit is connected with a fourth diode and a seventh capacitor through a fourth inductance coil respectively, a seventh pin of the third integrated circuit is connected with a tenth capacitor, a seventh pin of the third integrated circuit is connected with a second diode and a ninth capacitor through a fifth inductance coil respectively, and other pins of the third integrated circuit are grounded.
The vacuum pressure sensor signal processing circuit comprises a first integrated circuit, wherein a first pin of the first integrated circuit is connected with a second pin, the first pin of the first integrated circuit is connected with a third pin through a third inductance coil, the third pin of the first integrated circuit is connected with a sixth pin through a fifth capacitor, a seventh pin and an eighth pin of the first integrated circuit are connected, the eighth pin of the first integrated circuit is respectively connected with a third diode and an eighth capacitor through a second inductance coil, a fourteenth pin of the first integrated circuit is connected with a second capacitor, the fourteenth pin of the first integrated circuit is respectively connected with a first diode and a first capacitor through a first inductance coil, and the eleventh pin of the first integrated circuit is grounded.
Compared with the prior art, the utility model has the advantages of: the utility model discloses internal integration has vacuum pressure sensor and atmospheric pressure sensor, the solitary atmospheric pressure sensor among the present a lot of schemes has been removed from, be connected between pencil between vacuum pressure sensor and other the control unit and plug-in components etc, cost and space have not only been saved effectively like this, pressure sensor's structure has been simplified, and the accuracy and the reliability of acquireing vacuum pressure sensor and atmospheric pressure sensor signal have been improved, the accuracy of sensor signal has been ensured, the distortion of pressure sensor signal has been reduced effectively, the performance of vacuum helping hand has been improved. Meanwhile, the atmospheric pressure sensor and the vacuum pressure sensor in the product are mutually independent and do not influence each other on the circuit, so that the safety and the reliability of the whole vacuum power-assisted braking system are ensured.
Drawings
Fig. 1 is a block diagram of the pressure sensor of the present invention.
Fig. 2 is a schematic diagram of the signal processing circuit of the atmospheric pressure sensor of the present invention.
Fig. 3 is a schematic diagram of the signal processing circuit of the vacuum pressure sensor of the present invention.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples.
As shown in fig. 1, an automotive pressure sensor circuit includes an atmospheric pressure sensor signal processing circuit and a vacuum pressure sensor signal processing circuit, which are powered by an external power supply.
As shown in fig. 2, the atmospheric pressure sensor signal processing circuit includes a third integrated circuit, an eighth pin of the third integrated circuit is connected to a fourth diode and a seventh capacitor through a fourth inductance coil, a seventh pin of the third integrated circuit is connected to a tenth capacitor, a seventh pin of the third integrated circuit is connected to a second diode and a ninth capacitor through a fifth inductance coil, and other pins of the third integrated circuit are all grounded.
As shown in fig. 3, the vacuum pressure sensor signal processing circuit includes a first integrated circuit, a first pin of the first integrated circuit is connected to a second pin, the first pin of the first integrated circuit is connected to a third pin through a third inductance coil, the third pin of the first integrated circuit is connected to a sixth pin through a fifth capacitor, a seventh pin and an eighth pin of the first integrated circuit are connected to each other, the eighth pin of the first integrated circuit is connected to a third diode and an eighth capacitor through a second inductance coil, a fourteenth pin of the first integrated circuit is connected to a second capacitor, a fourteenth pin of the first integrated circuit is connected to a first diode and a first capacitor through a first inductance coil, and a tenth pin of the first integrated circuit is grounded.
Claims (3)
1. The automobile pressure sensor circuit is characterized by comprising an atmospheric pressure sensor signal processing circuit and a vacuum pressure sensor signal processing circuit, wherein the atmospheric pressure sensor signal processing circuit and the vacuum pressure sensor signal processing circuit are powered by an external power supply.
2. The automobile pressure sensor circuit according to claim 1, wherein the atmospheric pressure sensor signal processing circuit comprises a third integrated circuit, an eighth pin of the third integrated circuit is connected with a fourth diode and a seventh capacitor through a fourth inductance coil, a seventh pin of the third integrated circuit is connected with a tenth capacitor, a seventh pin of the third integrated circuit is connected with a second diode and a ninth capacitor through a fifth inductance coil, and other pins of the third integrated circuit are grounded.
3. The automotive pressure sensor circuit of claim 1 or 2, characterized in that the vacuum pressure sensor signal processing circuit comprises a first integrated circuit, the first pin of the first integrated circuit is connected with the second pin, the first pin of the first integrated circuit is connected with the third pin through the third inductance coil, the third pin of the first integrated circuit is connected with the sixth pin through a fifth capacitor, the seventh pin and the eighth pin of the first integrated circuit are connected, the eighth pin of the first integrated circuit is respectively connected with the third diode and the eighth capacitor through the second inductance coil, the fourteenth pin of the first integrated circuit is connected with the second capacitor, the fourteenth pin of the first integrated circuit is respectively connected with the first diode and the first capacitor through the first inductance coil, and the eleventh pin of the first integrated circuit is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491984.9U CN211809566U (en) | 2019-12-31 | 2019-12-31 | Automobile pressure sensor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491984.9U CN211809566U (en) | 2019-12-31 | 2019-12-31 | Automobile pressure sensor circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211809566U true CN211809566U (en) | 2020-10-30 |
Family
ID=73041170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922491984.9U Active CN211809566U (en) | 2019-12-31 | 2019-12-31 | Automobile pressure sensor circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211809566U (en) |
-
2019
- 2019-12-31 CN CN201922491984.9U patent/CN211809566U/en active Active
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