Process steps of vibrating wire acquisition module for measuring vibrating wire sensor

The vibrating wire acquisition module measures the flow steps of vibrating wire sensor ？

VM The measurement process is divided into excitation 、 sampling 、 Calculate three big steps . In continuous measurement mode , Start a new measurement process immediately after sampling the signal and calculating , In the single measurement mode , Only after receiving a single measurement instruction will the measurement process of the specified number of times be triggered , Enter the standby state after the measurement （ Wait for instructions ）.

incentive ： Use high-voltage pulse or low-voltage sweep method to send excitation signal to the sensor , Make the sensor steel string vibrate naturally . This module supports a variety of incentive methods .

sampling ： Collect the sinusoidal signals generated by the natural vibration of steel strings of multiple groups of sensors .

Calculation ： Evaluate the quality of the collected sensor signal 、 Adjustment operation , Calculate the vibration frequency of the sensor steel string .

VMXXX The general process of module measurement is ：

（ 1） Check whether the sensor is connected ;

（ 2） Delay for a period of time

（ 3） Send a specific excitation signal to the sensor coil , Make the sensor steel string produce natural vibration ;

（ 4） Delay for a period of time , Wait for the sensor return signal to stabilize ;

（ 5） Detect the signal returned by the sensor coil , When the signal meets the predetermined requirements, carry out quality evaluation and result calculation ;

（ 6） Read the temperature sensor ;

（ 7） Update the operation status and calculation results to the corresponding registers .

（ 8） If automatic data uploading is set , Then send the specified data actively .