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Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car

An in-vehicle communication system and test method technology, applied in the field of electromagnetic compatibility system-level testing, can solve problems such as inability to quantify, inaccurate, and without judgment basis, and achieve the effects of fast testing, intuitive results, and correct theory

Active Publication Date: 2015-05-06
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of unmeasurable, inaccurate, quantifiable, and undetermined basis for communication and command vehicle multi-machine mutual interference in the same vehicle at the present stage

Method used

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  • Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car
  • Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car
  • Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car

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Embodiment Construction

[0052] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] In order to solve the problems of the prior art, the present invention provides a method for testing the mutual interference of multiple devices in the same vehicle of a vehicle communication system, the method comprising:

[0054] Step S1: understand the basic information of each communication device;

[0055] This step specifically includes: counting the quantity of communication equipment installed in the vehicle, understanding the transmission signal characteristics of the communication equipment, and understanding the signal characteristics so as to better select appropriate measuring instruments and parameters; the transmission signal characteristics include transmission signal frequency range, modulation m...

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Abstract

The invention belongs to the field of system-level electromagnetic compatibility test and relates to a multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car. The multi-machine mutual-interference test method for the vehicle-mounted communication systems in the same car builds the multi-machine mutual-interference test method for the same car to carry out multi-machine mutual-interference test for the same car on several communication systems with different communication frequency bands to inspect the interference situations of bottom noise, adjacent channel, co-frequency, harmonic wave and the like interference of a communication device in a power emitting state to the other communication systems in receiving states. The test method makes up the disadvantages that a system communication system compatibility test method does not have pertinence and is not good for operation and execution. The test method is correct in theory, quick and convenient to finish test, intuitive in result, capable of quantifying the signal decreasing situation of the communication system under the multi-machine mutual-interference state in the same car, and suitable for testing the compatibility between different types of vehicle communication systems.

Description

technical field [0001] The invention belongs to the field of system-level testing of electromagnetic compatibility, and relates to a method for testing the mutual interference of multiple machines in the same vehicle in a vehicle communication system. Background technique [0002] In order to ensure efficient and timely communication command capabilities in war, the number of radio stations installed in the same communication command vehicle is required to increase continuously. However, due to the limited space in the car body, the distance between the radio antennas is very close and they share a small spectrum resource, which makes the coupling interference between them very serious. When multiple communication stations in the platform are working at the same time, the radio waves emitted by the transmitter will generate strong electromagnetic interference at the input end of the receiver. These interferences will lead to a serious decline in communication quality or eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/15
Inventor 张世巍赵晓凡李小健
Owner CHINA NORTH VEHICLE RES INST
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