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Calibration method and device for reference ring

A calibration method and a technology of reference rings, which are applied in the field of reference rings, can solve problems such as the inability to reduce system errors and the inability to eliminate reference ring errors

Active Publication Date: 2017-05-31
BEIJING RAILWAY SIGNAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But doing so can only reduce human error, not system error
That is, the error of the reference ring itself cannot be eliminated, and the impact on the test results of the transponder

Method used

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  • Calibration method and device for reference ring
  • Calibration method and device for reference ring
  • Calibration method and device for reference ring

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Embodiment Construction

[0138] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0139] see figure 1 , which shows a flowchart of a reference ring calibration method provided by an embodiment of the present invention, the reference ring calibration method includes:

[0140] S101. Select N reference rings, where N≥3;

[0141] From the plurality of reference rings, randomly select N reference rings, where N≥3.

[0142] S...

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Abstract

The invention provides a calibration method and device for a reference ring. The method comprises the following steps of selecting N reference rings and respectively computing to obtain an impedance compensation factor between the reference rings in each reference ring group; utilizing the impedance compensation factor to respectively compute to obtain an attenuation difference between the reference rings in each reference ring group; utilizing the attenuation difference to compute to obtain an error value of the current reference ring; utilizing the error value of the current reference ring to compute a correction parameter of the current reference ring; and calibrating the current reference ring according to the correction parameter of the current reference ring. The impedance compensation factor is utilized to compensate the attenuation difference between the reference rings, so that the influence of the impedance of the reference ring on a measuring result can be eliminated, and then the correction parameter obtained by computation is utilized to calibrate the reference ring, so that the influence on a testing result of a transponder is reduced.

Description

technical field [0001] The invention belongs to the technical field of reference rings, and in particular relates to a reference ring calibration method and device. Background technique [0002] In the prior art, the reference loop is used as the reference antenna in the transponder test, and the test is performed at two frequency points of radio frequency energy and uplink. Due to objective reasons such as the material and process of making the reference ring, there is a certain error between the manufactured reference ring and the reference ring calculated by the theoretical formula, which will cause the transponder to be tested when the above reference ring is used as a reference antenna. Results make a difference. [0003] Therefore, the reference ring needs to be calibrated in actual use, in order to reduce this error through calibration, so as to improve the accuracy of the transponder test results. [0004] In traditional calibration methods, a calibration piece wit...

Claims

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Application Information

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IPC IPC(8): H04B17/00
CPCH04B17/00
Inventor 李新磊叶轲房海云李凤梅孙亮
Owner BEIJING RAILWAY SIGNAL
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