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Calibration device of miniature pressure sensor

A pressure sensor and calibration device technology, which is applied in the direction of measuring devices, instruments, force/torque/power measuring instrument calibration/testing, etc., can solve the problems of small contact surface of spherical contacts, small size, and susceptibility to environmental interference, etc. Achieve the effect of strong anti-eccentric load ability and high precision

Inactive Publication Date: 2010-08-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small size of the miniature sensor itself and the small contact surface of the spherical contact, it is easily disturbed by the environment during calibration and force measurement

Method used

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  • Calibration device of miniature pressure sensor
  • Calibration device of miniature pressure sensor
  • Calibration device of miniature pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Firstly, place the calibration table base 1 of the present invention on a flat ground or a desktop, adjust the base adjustment nut 13 with a spirit level, and calibrate the horizontal plane of the calibration table base 1 to ensure that the base 9 is in a horizontal state.

[0029] Then, install the micro pressure sensor to be calibrated on the sensor fixture 12 of the calibration table base 1, and adjust the position so that the stainless steel ball on the top of the micro sensor faces the adjustable sensor pressure head 11 above. Loosen the fixing bolt handle 4, and turn the screw knob 7 to adjust the height position of the seat 3 and the left bearing seat 10, so that the distance between the adjustable sensor pressure head 11 and the contact point of the micro sensor is about 0.5 cm, and the deflection correction spring steel sheet 8 In a naturally curved state.

[0030] Secondly, connect the sensor measurement circuit and observe the output signal value of the micro...

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PUM

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Abstract

The invention discloses a calibration device of a miniature pressure sensor, which comprises a calibration device pedestal, a load bearing seat, a loading disc, a fixed guiding shaft, an adjusting seat and a sensor pressure head, wherein the fixed guiding shaft is arranged on the load bearing seat; the adjusting seat is arranged on the fixed guiding shaft and can move up and down along the fixed guiding shaft; the loading disc is arranged at the upper end of the load bearing seat; the lower end of the load bearing seat is provided with the sensor pressure heat; and the load bearing seat is connected with the adjusting seat through four deviation-rectifying spring steel sheets. By adopting the structure, the calibration device of the invention has self-balancing capacity and high eccentric load resistance performance. The invention provides the calibration device of the miniature pressure sensor, which has the characteristics of high accuracy, simple mounting, convenient operation and universality.

Description

1. Technical field [0001] The invention relates to the field of pressure sensor testing, in particular to a static calibration device for small and miniature pressure sensors. 2. Background technology [0002] Miniature pressure sensors are used for force measurement on small contact surfaces. It has the advantages of small measuring range, high force measurement accuracy and reliable performance. Its pressure sensitive element and signal conditioning circuit are integrated and packaged in a plastic package. The contact force is conducted through the top stainless steel contact to become a pressure sensitive element. The resistance value changes proportionally with the applied force. The level changes accordingly. [0003] To use the pressure sensor to measure the contact force, the pressure sensor must first be calibrated to determine the relationship between the sensor output value and the input. In scientific measurement, sensor calibration is an indispensable and impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L25/00
Inventor 吴涓宋爱国徐效农高以刚
Owner SOUTHEAST UNIV
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