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Air inlet pressure sensor for automobile

A technology of intake air pressure and sensors, applied in electrical control, machine/engine, fuel injection control, etc., can solve problems such as long wiring, heavy burden, and susceptibility to interference

Inactive Publication Date: 2009-05-20
WUHU EXCELLENCE WIRE HARNESS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has long wiring, inconvenient vehicle line design, easy to be interfered, and the burden on the ECU is heavy

Method used

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  • Air inlet pressure sensor for automobile
  • Air inlet pressure sensor for automobile
  • Air inlet pressure sensor for automobile

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] CAN module 4 and AD conversion module 5 are established in the single-chip microcomputer 3 of the present invention, and described AD conversion module 5 is analog to digital signal converter, and the analog signal that described air intake pressure sensor 1 gathers is sent to AD conversion module 5. It is converted into a digital signal by the AD conversion module 5, and then converted into a CAN bus signal by the CAN module 4 and sent to the CAN bus 6 of the vehicle.

Embodiment 2

[0030] The single-chip microcomputer 3 of the present invention adopts the chip of STM32F103C6 as the main control chip of the AD conversion module 5 and the CAN module 4 .

[0031] STM32F103C6 is the 32-bit ARM7 chip with the lowest price recently launched by ST Company. The single-chip microcomputer STM32F103C6 is powered by 5V, and the analog signal of the intake pressure sensor 1 is converted into a digital signal through the AD conversion module 5. Send to the vehicle CAN bus.

Embodiment 3

[0033] In the present invention, an RC filter circuit 7 is provided on the connection circuit between the intake air pressure sensor 1 and the AD conversion module 5 .

[0034] In the present invention, the analog signal collected from the traditional air intake pressure sensor 1 is filtered by the RC filter circuit 7 and sent to the AD conversion module 5 of the single chip microcomputer 3 .

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Abstract

The invention discloses an automobile inlet pressure sensor, which is supplied with power by a power module and is connected with an entire automobile CAN bus through a singlechip. The singlechip is provided with a CAN module and an AD modular converter inside, wherein the AD modular converter is an analog to digital signal converter; and analog signals acquired by the inlet pressure sensor are transmitted to the AD modular converter, converted into digital signals by the AD modular converter, converted into CAN bus signals by the CAN module and transmitted to the entire automobile CAN bus. By adopting the technical proposal, the inlet pressure sensor has CAN communication function, and is directly driven by voltage on the rear of a main relay; and through AD conversion, the analog signals of the inlet pressure are converted into the digital signals and transmitted to the entire automobile CAN network by the CAN module of the singlechip. The proposal makes the entire automobile circuit design more reasonable, and reduces interference and ECU load.

Description

technical field [0001] The invention belongs to the technical field of automobile electrical control, and relates to the technology of an automobile signal sensor. More specifically, the invention relates to an air intake pressure sensor for automobiles. Background technique [0002] At present, the air intake pressure sensor commonly used in automobiles is directly connected to the ECU, and the ECU collects and processes the analog signals. This method has long wiring, inconvenient vehicle line design, easy to be interfered, and heavy burden on the ECU. Contents of the invention [0003] The problem to be solved by the present invention is to provide an intake air pressure sensor for automobiles, the purpose of which is to optimize the circuit design of the whole vehicle, reduce interference, and reduce the load of the ECU. [0004] In order to achieve the above object, the technical scheme that the present invention takes is: [0005] The intake pressure sensor for aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00
Inventor 任学礼张业明
Owner WUHU EXCELLENCE WIRE HARNESS SYST