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Electromagnetic compatibility design method for products carried on vehicular system

A technology of electromagnetic compatibility, design method, applied in the direction of vehicle components, circuits or fluid pipelines, protection against overvoltage, etc., can solve problems affecting vehicle safety and reliability, etc.

Active Publication Date: 2014-04-02
TIANZE INFORMATION IND
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Problems solved by technology

If the electromagnetic compatibility between electronic devices is not handled properly, it will affect the safety and reliability of the car

Method used

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  • Electromagnetic compatibility design method for products carried on vehicular system
  • Electromagnetic compatibility design method for products carried on vehicular system
  • Electromagnetic compatibility design method for products carried on vehicular system

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Embodiment Construction

[0024] Refer to attached Figure 1~3 , The electromagnetic compatibility design method carried in the vehicle system of the present invention includes power management module design, signal acquisition circuit module design, circuit board layout design, filter design and ground wire processing. The signal acquisition circuit module mainly includes vehicle ACC signal acquisition circuit, CAN bus acquisition circuit, K line acquisition circuit and other parts; circuit board layout considers reducing radio frequency interference and power loop radiation interference of GPS module, GPRS module, etc.; filter design is In order to eliminate the interference signal on the wire; the ground wire processing includes setting a separate ground layer in the PCB design, isolation of the signal ground and the power ground, etc.; the power management module is used to supply power to other modules of the vehicle terminal, and the power management module includes high voltage protection circuit...

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Abstract

The invention relates to an electromagnetic compatibility design method, in particular to an electromagnetic compatibility design method for terminal products carried on a vehicular system. The method includes power management module design, signal acquisition circuit module design, circuit board layout design, filter design and ground wire processing. A signal acquisition circuit module comprises a vehicular ACC signal acquisition circuit, a CAN bus acquisition circuit and a K wire acquisition circuit. The reduction of radio frequency interface and power loop radiation interferences from a GPS module, a GPRS module and the like is considered for circuit board layout. Interference signals of leads are eliminated for the filter design. The ground wire processing includes arrangement of an independent ground layer in the PCB design and isolation of signal ground and power ground. A power management module comprises a high tension protection circuit, a low tension protection circuit, and a backup battery charging circuit. Through the application of the method, the vehicular terminals can bear interferences of the environments such as electrostatic discharge, radiation disturbance, radio frequency field induction conducted disturbance, transient and surge and the like.

Description

technical field [0001] The invention relates to an electromagnetic compatibility design method carried on a vehicle system, in particular to an electromagnetic compatibility design method of a terminal product carried on a vehicle system. Background technique [0002] With the rapid development of the automobile industry, more and more electronic devices are equipped inside the automobile. The space where the circuit board is located is relatively narrow, and each component will cause mutual electromagnetic interference (Electromagnetic Interference, EMI for short). When designing vehicle-mounted terminal products, it is necessary not only to consider the EMI directly generated by such components, that is, the vehicle-mounted terminal product does not interfere with other devices, but also to consider the interference from other devices, that is, the vehicle-mounted terminal has a certain degree of electromagnetic interference in the environment. Immunity, this is the meani...

Claims

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Application Information

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IPC IPC(8): B60R16/02H02H3/20H02H3/24
Inventor 吴琼陈智也薛扬陈进
Owner TIANZE INFORMATION IND
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