Test method and system
A test method and a technology for testing antennas, which are applied in the field of data processing, can solve problems such as reduction of information volume, reduction of signal-to-noise ratio, failure of information transmission, etc., and achieve the effect of avoiding the reduction of information volume
Active Publication Date: 2021-10-19
BEIJING RAILWAY SIGNAL
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Problems solved by technology
[0005] In view of this, the embodiment of the present invention provides a test method and system to solve the problem of the reduction of the amount of information transmitted by the downlink excitation signal in the prior art, and the problem that the signal-to-noise ratio decreases and the information transmission fails.
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051]In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comp...
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The invention provides a test method and system, and the method comprises the steps: adjusting an initial amplitude, and determining a target amplitude; testing the transponder to be tested by using the excitation signal edited by the target amplitude; acquiring a time domain signal in a downlink signal fed back by the transponder to be tested; when it is determined that the frequency spectrum of the time domain signal contains a frequency shift keying (FSK) signal with the preset frequency and the preset frequency offset, determining that the to-be-tested transponder passes the test. In the scheme, the to-be-tested transponder is tested by using the excitation signal edited by the adjusted target amplitude so as to acquire the downlink signal fed back after the to-be-tested transponder is started. And when determining whether the frequency spectrum of the time domain signal in the downlink signal contains a frequency shift keying (FSK) signal with a preset frequency and a preset frequency offset, it is determined that the to-be-tested transponder passes the test, namely, determining a conclusion that the to-be-tested transponder can be started within a standard time. Therefore, the problems that the amount of information transmitted by the downlink excitation signal is reduced, the signal-to-noise ratio is reduced and the information transmission fails are avoided.
Description
technical field [0001] The invention relates to the technical field of data processing, in particular to a testing method and system. Background technique [0002] The transponder is a positioning device in the train control system, and it is a device that realizes high-speed point data transmission between the ground and the vehicle equipment at a specific location. [0003] When the train passes by, the transponder on-board antenna at the bottom of the train head sends an excitation radio frequency signal to the ground transponder on the line rail. After receiving the signal, the ground transponder converts it into working power to start, and sends an uplink signal to the transponder vehicle-mounted antenna at the bottom of the train locomotive. Due to the extremely fast speed of the train passing the rails, and the small communication range between the ground transponder and the vehicle antenna, if the ground transponder starts slowly after receiving the downlink excitat...
Claims
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IPC IPC(8): H04B17/00H04B1/59
CPCH04B17/0085H04B17/00H04B1/59Y02D30/70
Inventor 王通叶轲朱林富孙亮张诚连乐
Owner BEIJING RAILWAY SIGNAL