Calibrating device for vibrating string type strain transducer

A technology of strain sensor and calibration device, which is applied in the direction of mechanical solid deformation measurement, etc., can solve the problems of small measurement range and low measurement resolution, and achieve the effects of simple operation, high measurement accuracy and strong simulation

Inactive Publication Date: 2010-06-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing calibrator generally uses a dial gauge as a measuring tool, with a range of 1-3mm and a res

Method used

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  • Calibrating device for vibrating string type strain transducer
  • Calibrating device for vibrating string type strain transducer

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Embodiment Construction

[0020] The present invention will be further described below with reference to the drawings and embodiments, but the scope of protection claimed by the present invention is not limited to the scope indicated by the embodiments.

[0021] Such as figure 1 As shown, the vibrating wire strain sensor calibration device includes the rotary joint handle 1, the bracket 2, the thread differential fine-tuning mechanism 3, the dial indicator 4, the meter base 5, the measuring rod 6, the extensometer 7, the measurement display 8, the fixed The collar 9, the locking member 10, the frequency meter 11 and the vibrating wire strain sensor 12. The mounting blocks at both ends of the vibrating wire strain sensor 12 are respectively covered with a fixed collar 9 which is installed on the bracket 2 through a locking member 10, and the spin joint handle 1 is set in the middle of the upper end of the calibration bracket 1, and the spin joint handle 1 is threaded The differential fine-tuning mechanism...

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Abstract

The invention discloses a calibrating device for a vibrating string type strain transducer. Mounting blocks at two ends of the vibrating string type strain transducer are sleeved on a fixed lantern ring, the lantern ring is arranged on a bracket through a locking piece, a spinodal handle is connected with a dial gauge through a threaded differential fine tuning mechanism, the dial gauge is arranged on a gauge stand, and two ends of the gauge stand are connected with the threaded differential fine tuning mechanism and the vibrating string type strain transducer respectively; the number of measuring bars is two, the two measuring bars are fixed at the upper and lower ends of a bracket respectively, two ends of an extensometer are connected with the two measuring bars respectively, the extensometer is connected with a measuring indicator, and the extensometer is positioned on one side of the vibrating string type strain transducer; and a frequency meter is connected with the vibrating string type strain transducer. Based on the differential thread transmission principle, the calibrating device realizes the function of rotary fine tuning movement, has high measurement accuracy, realizes wide-range measurement, is simple to operate, calibrates the vibrating string type strain transducer through simulation, and is applicable to the metering calibration for various graded places.

Description

Technical field [0001] The invention relates to a metering calibration equipment, in particular to a vibrating wire strain sensor calibration device. Background technique [0002] In the field of civil engineering and structure, the measurement of small and small deformations of structural parts commonly used displacement gauge measurement and electrical strain measurement technology (resistance strain gauge measurement). Generally, the measurement accuracy of displacement meters is low, which is not suitable for the occasions of measurement accuracy; although the electrical strain measurement technology has high measurement accuracy, it is inconvenient to use, especially under the conditions of field operation, no power supply and poor environment. Both measurement and measurement are affected to a certain extent, and operators need to have certain professional testing skills. [0003] However, in the field of engineering structure deformation testing, a vibrating wire strain sen...

Claims

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Application Information

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IPC IPC(8): G01B5/30
Inventor 钟穗东王涛张汉平胡迟春
Owner SOUTH CHINA UNIV OF TECH
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