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Real vehicle frequency modulation radio interference test system and method

A test system and real vehicle technology, applied in receiver monitoring and other directions, can solve problems such as difficult test environments, inability to accurately simulate real vehicle radio interference, etc., to ensure stability and reduce multi-path interference.

Active Publication Date: 2018-04-06
HUIZHOU DESAY SV AUTOMOTIVE
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AI Technical Summary

Problems solved by technology

[0006] The present invention provides a test system and method for FM radio interference in a real vehicle. The technical problem to be solved is that the existing bench test method cannot accurately simulate the radio interference inside the real vehicle, and it is difficult to quickly build it on the real vehicle. a stable test environment

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  • Real vehicle frequency modulation radio interference test system and method
  • Real vehicle frequency modulation radio interference test system and method
  • Real vehicle frequency modulation radio interference test system and method

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Embodiment Construction

[0049] The embodiment of the present invention will be explained in detail below in conjunction with the accompanying drawings. The examples given are only for the purpose of illustration, and cannot be interpreted as limiting the present invention. The accompanying drawings are only for reference and description, and do not constitute the scope of patent protection of the present invention. limitations, since many changes may be made in the invention without departing from the spirit and scope of the invention.

[0050] A module structure diagram of a test system for a real vehicle FM radio interference provided by an embodiment of the present invention, as shown in figure 1As shown, in this embodiment, a kind of test system of real car FM radio interference provided by the present invention is provided with portable media device 1, and the FM transmission circuit that is positioned at the vehicular electronic system that is connected with described portable media device 1 2,...

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Abstract

The invention discloses a real vehicle frequency modulation radio interference test system and method, related to the technical field of vehicle test. The real vehicle frequency modulation radio interference test system is equipped with a portable media device and a FM transmitting circuit and a signal processing and contrast display circuit connected with the portable media device, and is also equipped with a vehicle host connected with the signal processing and contrast display circuit; the FM transmitting circuit is equipped with an FM transmitting antenna; and the vehicle host is equippedwith a radio antenna. According to the real vehicle frequency modulation radio interference test system and method provided by the invention, the initial test signal (1kHz) is compared with the signaloutput by the demodulation of a vehicle computer in real time, and the distortion of the real vehicle output waveform is monitored at any time; once the vehicle computer is interfered by electrical equipment on the vehicle such as a windscreen wiper, the demodulated waveform is distorted, and through performing real-time dual channel visual comparison with the original 1kHz modulation signal, thereal vehicle interference source can be located quickly, and an important basis is provided for the sound evaluation of the real vehicle radio.

Description

technical field [0001] The invention relates to the technical field of vehicle testing, in particular to a testing system and method for FM radio interference in real vehicles. Background technique [0002] At present, the main methods of testing the FM radio interference of the car audio host are as follows: [0003] 1. Bench test: Build a test environment with an audio analyzer and a radio frequency signal transmitter to conduct parameter performance tests. Its disadvantage is that it is separated from the real car environment and cannot simulate the device operation interference that the audio head unit receives in the real car environment; [0004] 2. Real vehicle subjective feeling test: use the radio function according to the actual user's use environment, and make a judgment through the tester's subjective hearing experience on the real car. The disadvantage is that there are too many external interferences in the actual radio use environment, and it is difficult to...

Claims

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Application Information

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IPC IPC(8): H04B17/20H04B17/23H04B17/26
CPCH04B17/20H04B17/23H04B17/26
Inventor 罗超苏振鹏韩涛
Owner HUIZHOU DESAY SV AUTOMOTIVE
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