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A method for measuring the correctness of thermocouple welds before thermal testing of spacecraft

A measurement method and thermocouple technology, applied in the field of satellite assembly inspection and testing, can solve problems such as labor consumption, and achieve the effect of reducing labor costs and improving measurement efficiency

Inactive Publication Date: 2017-10-17
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] This detection method requires two inspectors to work together, and each plug needs to be measured for 20 minutes. Assuming that each satellite has 5 to 7 thermocouple plugs, two inspectors need to work for 140 minutes, which is relatively labor-intensive. Therefore, to explore A time-saving and labor-saving method to achieve correct thermocouple welding connection is very important

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  • A method for measuring the correctness of thermocouple welds before thermal testing of spacecraft

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings. These descriptions are only exemplary and not intended to limit the protection scope of the present invention.

[0019] The method for measuring the correctness of the thermocouple welding connection before the spacecraft heat test of the present invention comprises the following steps:

[0020] 1) Connect the 48 copper wire ends of the thermocouple on the spacecraft with the 1-48 pins of the Y2-50ZJ plug; twist the two constantan wire ends of the thermocouple on the spacecraft together to form a common The negative pole is twisted together with the two copper wires drawn from the 49 and 50 pins of the Y2-50ZJ plug for cold junction compensation, forming a 50-pin Y2-50ZJ plug interface at the end of the spacecraft thermocouple;

[0021] 2) In the test module at the other end, it is composed of a transfer cable, SCXI bus chassis, matrix switch and junction box, digital ...

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Abstract

The invention discloses a method for measuring the correctness of the thermocouple welding connection before the thermal test of the spacecraft. After the thermocouple is welded into the Y2 plug, one end clamps the common point and the other end tests the plug probes one by one. Change to a measurement method that establishes a test loop. The method simplifies the labor cost and improves the measurement efficiency.

Description

technical field [0001] The invention relates to a method for measuring the correctness of thermocouple welding before a spacecraft thermal test, and belongs to the technical field of satellite assembly inspection and testing. Background technique [0002] Taking the second-generation navigation platform as an example, the copper wire ends of each 48 thermocouples are soldered to the 1-48 pins of a Y2-50ZJ plug in turn, and the constantan wire ends are twisted together to form a common negative pole. This Y2-50ZJ Two copper wires lead out from pins 49 and 50 of the plug for cold junction compensation. [0003] In order to verify the connection status of thermocouples and lead wires, it is necessary to detect the on-off status of each lead wire. At present, when inspectors detect thermocouples, use the ohm gear of the digital multimeter, one of the two test leads holds the common negative pole, and the other contacts the 1-48 pins of the Y2-50ZJ plug (electrical connector) in...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00G01R31/02
Inventor 郭洺宇李志明胡全忠杨帆黄垒冯涛梁园园刘月周波邵京平
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG