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Water temperature sensor for cars

A technology of water temperature sensor and automobile, which is applied in the field of automobile water temperature sensor and automobile signal sensor, and can solve the problems of long wiring, heavy burden, and susceptibility to interference

Inactive Publication Date: 2009-05-27
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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  • Water temperature sensor for cars
  • Water temperature sensor for cars
  • Water temperature sensor for cars

Examples

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 water temperature 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 vehicle CAN bus 6.

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. The analog signal of the water temperature sensor 1 is converted into a digital signal through the AD conversion module 5. After processing in an appropriate format, the signal is sent to Vehicle CAN bus.

Embodiment 3

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

[0034] In the present invention, the analog signal collected from the traditional water temperature 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 water temperature sensor which is supplied with power by a power module and is connected with a vehicle CAN bus by a singlechip. The singlechip is provided with a CAN module and an AD converter module which is an analogy-digital signal converter, and analog signals collected by the water temperature sensor are transmitted to the AD converter module, is converted into digital signals by the AD converter module, and then is sent to the vehicle CAN bus after being transformed into CAN bus signals by the CAN module. By adopting the technical proposal, the water temperature sensor has the function of CAN communication, and is directly driven by rear voltage of a main relay; the analog signals of water temperature is converted into the digital signals by the AD converter, and then is transmitted to a vehicle CAN network by the CAN module of the singlechip. The proposal leads the design of the vehicle circuit to be more reasonable, reduces interference and relieves the load of an ECU.

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 automobile water temperature sensor. Background technique [0002] At present, the water temperature 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 automobile water temperature sensor, 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 automobile water temperature sensor provided b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02G01K7/00
Inventor 任学礼张业明
Owner WUHU EXCELLENCE WIRE HARNESS SYST
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