Vibration wire type sensor reader measuring meter

Abstract

The invention discloses a vibration wire type sensor reader measuring meter. The vibration wire type sensor reader measuring meter comprises a data acquisition terminal with a single-chip microcomputer as a controlling center and an upper computer, wherein the data acquisition terminal comprises a shock excitation circuit, a signal amplifying and shaping circuit, a temperature acquisition circuit, the single-chip microcomputer and a signal transmission circuit; the shock excitation circuit adopts a high-voltage method to enable a vibration wire type sensor to generate resonance; frequency signals outputted by the vibration wire type sensor are amplified and shaped by the signal amplifying and shaping circuit; the temperature acquisition circuit is used for measuring the value of the negative characteristic thermistor of the vibration wire type sensor provided with temperature correction; a frequency measuring module and a temperature measuring module are arranged inside the single-chip microcomputer, and the single-chip microcomputer is used for controlling the shock excitation circuit, acquiring signals outputted by the signal amplifying and shaping circuit and signals outputted by the temperature acquisition circuit to calculate and obtain the measured temperature value and frequency value; the signal transmission circuit is used for transmitting the measured temperature valve and frequency value which are calculated and obtained by the single-chip microcomputer to the upper computer; an engineer management module is arranged inside the upper computer. According to the invention, the vibration wire type sensor reader measuring meter can be used for measuring the vibration wire type sensors in large-scale projects.

Description

technical field [0001] The invention relates to a vibrating wire sensor reading instrument, which belongs to the technical field of engineering measurement. Background technique [0002] A vibrating wire sensor is a sensor that converts other physical quantities, such as pressure, torque, etc., into frequencies. The vibrating wire sensor directly outputs the vibration frequency signal of the vibrating wire, so it has the characteristics of strong anti-interference ability, small influence of electric parameters, stable and reliable performance, vibration resistance, long life, etc., so it has been widely used in engineering. The working process of the vibrating wire sensor is: first make it vibrate, then receive the frequency signal returned by it, measure the resonant frequency, and finally obtain the corresponding physical quantity to be measured through the calculation of the calibration formula. [0003] At present, the reading instrument used to measure the vibrating w...

AI Technical Summary

Problems solved by technology

However, in a project, there are often hundreds of sensors, and one or two measurements are required almost every day, so this measurement method will consume a lot of time and energy

[0004] In addition, existing tools cannot effectively manage the measurement of large-scale projects with a large number of measurement points

The invention patent with the notification number CN102401692A sets up a separate channel for each measurement point in the multi-measurement point project, but the number of channels has an upper limit

Moreover, the parameter table and measurement records composed of vibrating wire sensors used in the measurement are often stored in paper forms or computer electronic forms, which are separated from the reading instrument and cannot be consulted and analyzed during measurement.

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