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Consistency compensation method and device for resistance strain type weighing sensor

A weighing sensor and resistance strain type technology, applied in the field of sensors, can solve problems such as complex formulas, inaccurate compensation, and easy calculation of wrong results, and achieve the effect of improving accuracy and simplifying the compensation process

Active Publication Date: 2018-02-09
RUIMA ELECTRIC MFG FUJIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Manually record data, it is easy to record the wrong data due to the error of the tester, resulting in inaccurate compensation; 2. Using a calculator to calculate manually, due to the complexity of the formula, it is easy to miscalculate the result; 3. Manually record data and calculate manually Numerical, low productivity

Method used

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  • Consistency compensation method and device for resistance strain type weighing sensor
  • Consistency compensation method and device for resistance strain type weighing sensor
  • Consistency compensation method and device for resistance strain type weighing sensor

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Embodiment 1

[0052] Please refer to figure 1 , figure 2 with image 3 , The first embodiment of the present invention is:

[0053] A method for compensating the consistency of a resistance strain sensor includes:

[0054] First, the tester applies the full load weight to sensor 1 on the dynamometer, which can be achieved by applying weight 6. After the output of sensor 1 is stable, the sensitivity measuring instrument 2 connected to it will display the sensitivity of sensor 1 before compensation; It is sent to the arithmetic unit 3 connected to it, and the arithmetic unit 3 is preferably a computer; by setting the communication protocol between the sensitivity measuring instrument 2 and the computer, a communication transmission channel is established to realize the sensitivity and sensitivity detected by the output of the sensitivity measuring instrument. Input the impedance value to the computer, such as pre-setting the communication protocol parameters of the sensitivity measuring instrumen...

Embodiment 2

[0059] Please refer to figure 1 , figure 2 with image 3 , The second embodiment of the present invention is:

[0060] A resistance strain type load cell consistency compensation device, comprising a resistance strain type load cell 1, a sensitivity measuring instrument 2, an arithmetic unit 3, and a printer connected in sequence; the arithmetic unit 3 may be a computer; the compensation device is also It includes a triggering device 5 connected to a computer for triggering the computer to start the calculation process. The triggering device 5 is preferably a foot switch; the resistance strain type load cell is used to obtain a full-load weight and the output is stable The value is the sensitivity of the sensor before compensation;

[0061] The sensitivity measuring instrument 2 is used to obtain and display the sensitivity of the sensor, and at the same time send the sensitivity to the computer through the communication link established with the computer;

[0062] The foot switch ...

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Abstract

The invention provides a consistency compensation method and apparatus for a resistance strain type weighing sensor. The consistency compensation method comprises applying full-load weight to a weighing sensor; acquiring the sensitivity of the weighing sensor through a sensitivity measuring instrument; according to the sensitivity, acquiring a compensation value for a sensitivity compensation element through an arithmetic unit, and according to an input impedance value after compensation of the sensitivity, calculating an impedance compensation value of an impedance compensation element; and outputting the compensation value and the impedance compensation value through output equipment. The consistency compensation method and apparatus for a resistance strain type weighing sensor can realize automatic acquisition of the compensation value and the impedance compensation value and improve the accuracy for consistency compensation and the efficiency for compensation. The consistency compensation method and apparatus for a resistance strain type weighing sensor can simplify the compensation technology, and are conductive to popularization and application of the consistency compensation technology for a resistance strain type weighing sensor.

Description

Technical field [0001] The invention relates to the field of sensors, in particular to a method and device for compensating the consistency of a resistance strain type load cell. Background technique [0002] The principle of the resistance strain type load cell is that the elastic body deforms elastically under the action of external force, so that the resistance strain gage pasted on its surface also deforms. After the resistance strain gage is deformed, its resistance value will change. The measurement circuit converts this resistance change into an electrical signal, thus completing the process of transforming the external force into an electrical signal. [0003] In the production process of resistance strain load cells, the sensitivity consistency compensation process usually uses a certain length of low temperature coefficient manganese copper wire as the compensation wire, which is connected in series to the input terminal of the Wheatstone bridge to adjust the consistency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G3/142
CPCG01G3/142
Inventor 林金田许冠
Owner RUIMA ELECTRIC MFG FUJIAN
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