Universal EMC test load device of automotive control unit

A vehicle controller and load device technology, applied in general control systems, electrical testing/monitoring, control/regulation systems, etc., can solve problems such as high cost and poor versatility, reduce shielding requirements, save costs, reduce The effect of small electromagnetic interference

Active Publication Date: 2018-07-06
威凯(深圳)检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In summary, the existing load devices have the problems of poor versatility and high cost

Method used

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  • Universal EMC test load device of automotive control unit
  • Universal EMC test load device of automotive control unit
  • Universal EMC test load device of automotive control unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 It is a schematic diagram of the electromagnetic compatibility test scene of the vehicle controller. The test process is carried out in an anechoic chamber. The vehicle controller is connected to the load device through an adapter. The adapter is an independent component, which is composed of a wire harness and connectors at both ends connected by the wire harness, and the connectors at both ends are adapted to the connectors of the load device and the vehicle controller respectively. In this way, when the load device is faced with a vehicle controller that does not match the connector, the matching problem can be solved by customizing the corresponding adapter. Compared with re-developing the load device, this method is undoubtedly a preferred method.

[0043] The load device outputs an electrical signal through the CAN bus, converts it into an optical signal through the optical bridge, transmits it to the electric wave anechoic chamber through the optical f...

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Abstract

The invention discloses a universal EMC test load device of an automotive control unit. On the basis of summarization of requirements on a load device by automotive control units in different projects, a sufficient number of PWMs and analog and switching value output passages and a sufficient number of PWMs and switching value input sampling passages are set; a microcontroller configures input andoutput interfaces of the loading device, a frequency and a duty cycle of an output PWM amount, an output analog value, and an output switching value selection range including three level states including high-resistance, high-level, low-level states flexibly; and the input switching value load is used as a high-end driving load or a low-end driving load. Therefore, after primary development of the loading device, testing needs of more than 90% of automotive control units can be met; repeated development is avoided; the development time and development cost of the automotive control unit are reduced; and the development efficiency of the automotive control unit is improved.

Description

technical field [0001] The invention relates to an EMC test load device for a whole vehicle controller. Background technique [0002] The new energy vehicle vehicle controller (Vehicle Control Unit, VCU) is the assembly controller of the new energy vehicle power system, which is different from the direct and simple control of the traditional automotive electronic control components. Various sensors, switch signals, bus signals and corresponding environmental conditions are comprehensively judged, and on this basis, the work of various electronic control components such as the engine, drive motor, gearbox, and power battery is coordinated to realize the economy, power, and Safety control and reduce emission pollution. [0003] At present, in order to meet the requirements of the electromagnetic compatibility performance regulations of the whole vehicle and improve the electromagnetic compatibility performance of the whole vehicle, the electronic control components of the veh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213
Inventor 张仕彬黄鲲邓俊泳
Owner 威凯(深圳)检测技术有限公司
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