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Method for testing signal transmission performance of electric conductive slip ring

A conductive slip ring and signal transmission technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problem of being unable to provide direct evaluation of the signal transmission performance of conductive slip rings, and achieve the effect of reliable evaluation indicators and test methods

Inactive Publication Date: 2012-06-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to systematic testing of these parameters in the manufacturing process, in actual use, the working performance of the conductive slip ring is generally judged simply by testing the contact resistance. The test results cannot provide direct information on the signal transmission performance of the conductive slip ring according to the application system. evaluation of

Method used

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  • Method for testing signal transmission performance of electric conductive slip ring
  • Method for testing signal transmission performance of electric conductive slip ring
  • Method for testing signal transmission performance of electric conductive slip ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] Embodiment: the concrete method of testing conductive slip ring signal transmission performance is as follows:

[0032] (1) Clear environmental conditions for use: the signal line in the communication protocol is single-ended, the level protocol is RS422 level, the baud rate is 115200bps, and the number of slip ring channels is 6;

[0033] (2) According to the above parameters, first connect the receiving end 1.3 and the sending end 1.4 to a channel of the conductive slip ring, the first selection switch 1.1 selects the RS-422 level protocol, and the second selection switch 1.2 selects the baud rate as 115200bps ;

[0034] (3) The sending end is relatively stationary relative to the rotating body 2.5 and the receiving end is relatively stationary relative to the rotating body 2.6. The 2.88e7 incremental data sent by the bit error rate test box 2.1 within 2 hours pass through the sending end 1.4, the conductive slip ring 2.2, and the receiving end 1.3 Receive and compar...

example 2

[0038] Example 2: The specific method of testing the signal transmission performance of the conductive slip ring is as follows:

[0039](1) For the same slip ring, the use environment is: the channel 1 and 2 signal lines are differential ends, the other channels are single-ended, the level protocol is RS422 level, and the baud rate is 115200bps;

[0040] (2) According to the above parameters, first connect the differential end interface of the receiving end 1.3 and the sending end 1.4 to the channels 1 and 2 of the conductive slip ring 2.2, the first selection switch 1.1 selects the RS-422 level protocol, and the second selection switch 1.2 Select the baud rate as 115200bps;

[0041] (3) The sending end is relatively stationary relative to the rotating body 2.5 and the receiving end is relatively stationary relative to the rotating body 2.6, and the 2.88e7 incremental data sent by the bit error rate test box 2.1 within 2 hours pass through the sending end 1.4, the conductive s...

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Abstract

The invention discloses a method for testing the signal transmission performance of an electric conductive slip ring. The method comprises the following steps of: adopting an error rate test box of which a sending end and a receiving end are connected with each path of electric conductive slip ring channel in turn; setting a level protocol and a baud rate; respectively testing a static error rate and a dynamic error rate of the channel; connecting each path of electric conductive slip ring in turn and testing the error rate; testing the static error rate and the dynamic error rate of each channel; and if the static error rate and the dynamic error rate of a certain path of channel are both less than 1e-7, confirming that the signal transmission performance of the channel of the electric conductive slip ring is excellent and is useable. The invention provides a direct and reliable method for evaluating indexes and testing the signal transmission performance of the electric conductive slip ring. The method is suitable for the test and application of the electric conductive slip ring under different application environments.

Description

technical field [0001] The invention relates to a method for testing the signal of a conductive slip ring, in particular to designing a method for testing the signal transmission performance of the conductive slip ring. Background technique [0002] Conductive slip ring is a precision electromechanical device that realizes the transmission of electrical signals and electrical power between two relative rotating mechanisms, also known as collector ring and rotating electrical interface. Such devices are widely used in fields such as industrial automation, medical equipment and defense aerospace. [0003] The conductive slip ring is mainly composed of two main parts: slip ring and brush wire, and the contact methods of the two are point contact and surface contact. The contact resistance of the conductive slip ring will directly affect the effect of signal transmission. Generally, the smaller the contact resistance, the better. In addition to the material of the contact par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 王磊赵辛高晓文张超陈杏藩舒晓武
Owner ZHEJIANG UNIV