Resistance measurement system of strain gages for spacecraft
A technology of resistance measurement and strain gauges, which is applied in the field of satellite assembly inspection and testing, to achieve stable pressure, eliminate uncertain factors under pressure, and stabilize contact conditions
Active Publication Date: 2014-02-26
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Using the test system of the present invention to carry out the strain gauge resistance test is superior to the original process in terms of test reliability, test efficiency, and protection of the strain gauge. This system overcomes the defects of the existing screening test methods and achieves expectations. Research and development goals can effectively improve the quality of strain gauge screening testing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The working device for measuring the free length of the satellite separation switch of the present invention will be further described below with reference to the accompanying drawings. The resistance measurement system of the spacecraft strain gauge of the present invention includes a test board 21, a pressing unit group, a left operation lever 17, a right operation lever 20, a support shaft 13, a band switch 32, and a resistance measurement device, wherein the resistance measurement device is provided in the test plate 21. The compression unit group on the board is composed of several groups of compression units. Several groups of compression units are fixed on the support shaft. Both sides of the support shaft are supported on the bearing seat. The middle of one end of the support shaft passing through the bearing seat is locked. Slot 1, the operating rod is fixedly connected to the locking groove 1 through the locking block and can rotate the support shaft with the l...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a resistance measurement system of strain gages for a spacecraft. The resistance measurement system comprises a test plate, a pressing unit set, operation rods, supporting shafts, a wave band switching switch and a resistance measurement device. The pressing unit set on the test plate is composed of a plurality of sets of pressing units, the pressing units are fixedly arranged on the supporting shafts in a penetrating mode, two sides of the supporting shafts are supported by bearing seats, first locking grooves are formed in the middle portions of one ends of the supporting shafts penetrating through the bearing seats, the operation rods are fixedly connected into the first locking grooves through locking blocks and enable the supporting shafts to rotate along with the ascending and descending of the operation rods, the supporting shafts drive the pressing units on the supporting shafts to ascend and descend, pressing levers are made to drive pressing heads through the supporting shafts to press the strain gages on strain gage seats, and meanwhile lead sheet press blocks are driven to press the leads of the strain gages on elastic contact sheets. The resistance measurement system eliminates the uncertain factors of the pressed state of the strain gages, pressure is stable, the strain gages are pressed uniformly, test reliability is improved, the strain gage protection effect is improved, 10 strain gages are measured at one time, the operation is convenient, and work efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of satellite assembly inspection and testing, in particular, the invention relates to a strain gauge screening and testing system for spacecraft. Background technique [0002] At present, there are two methods for the acceptance and screening of strain gauges. One is to measure the strain gauge directly in its natural state, and the other is to measure the sensitive grid of the strain gauge with an ordinary pressing block. [0003] The first method is to carefully observe the appearance of the strain gauge after eliminating the operation problem. It is found that each strain gauge is in a bending state of different radians under the condition of natural placement. The test results show that the resistance varies by ±0.2Ω. The test results show that the test method has the problem of unstable test results with different environmental conditions. [0004] The second method is to use any common pressure block ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/02
Inventor 郭洺宇李志明黄垒胡全忠郑丽得张春柳杨帆吴小洲付英莲梁园园
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG