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A Time-Domain Measurement Method of Peak-to-Peak Signal of Passive Magnetoelectric Speed ​​Sensor

A speed sensor and signal peak technology, applied in the field of peak-to-peak time-domain measurement, can solve the problems of large errors, affecting the accuracy of measurement results, and not reflecting the actual peak-to-peak value of similar sine wave periodic signals, so as to achieve fast calculation speed and eliminate information The effect of miscalculation

Active Publication Date: 2020-07-28
TONGJI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

After the installation position of the sensor is determined, due to the influence of the actual installation position, there may be obvious distorted waveforms in the first half cycle or in the second half cycle. In the case of asymmetric waveforms, especially in the case of transient pulse interference or spikes in the signal In the case of / trough interference signal, directly using the maximum value and minimum value of the signal to calculate the peak-to-peak value and the ideal waveform result has a large error, which cannot reflect the actual peak-to-peak value of the sine-like periodic signal, which affects the accuracy of the measurement results.

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  • A Time-Domain Measurement Method of Peak-to-Peak Signal of Passive Magnetoelectric Speed ​​Sensor
  • A Time-Domain Measurement Method of Peak-to-Peak Signal of Passive Magnetoelectric Speed ​​Sensor

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0022] This embodiment provides a method for measuring the peak-to-peak value of a passive magnetoelectric speed sensor signal in the time domain. The method first detects whether the half-period waveform in the periodic signal output by the passive magnetoelectric speed sensor is complete, and then uses a complete half-cycle waveform The data realizes the measurement of the peak-to-peak value of the entire cycle signal, and the cycle signal is a discrete sampling signal in the time domain. Take a sine-like periodic signal as an example, such as figure 1 As shown, the method specific...

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Abstract

The invention relates to a signal peak-to-peak value time domain measurement method for passive magnetoelectric speed sensors. First, whether the semi-period waveform in a periodic signal output by a passive magnetoelectric speed sensor is complete is detected, and then, the full-period signal peak-to-peak value is measured using a compete piece of semi-period waveform data, wherein the periodic signal is a time domain discrete sampling signal. Compared with the prior art, the realer and more effective peak-to-peak value of a periodic signal can be obtained, and the method has the advantages of fast calculation, accurate determination, and the like.

Description

technical field [0001] The invention relates to a peak-peak time-domain measurement method, in particular to a peak-peak time-domain measurement method for a signal of a passive magnetoelectric rotational speed sensor. Background technique [0002] Magnetoelectric speed sensor is widely used in the field of vibration measurement. It has the following characteristics: passive output, no external power supply; two-wire output, convenient wiring; sensor output signal similar to sine wave signal; high reliability, used in harsh places. The amplitude (peak-to-peak value) of the sine wave-like signal characterizes the size of the physical quantity collected by the sensor. The existing peak-to-peak time-domain measurement method of periodic signals usually calculates the difference between the maximum and minimum values ​​of the signal waveform collected in one cycle as the peak-to-peak value. After the installation position of the sensor is determined, due to the influence of the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/04G01R19/25
CPCG01R19/04G01R19/2509
Inventor 张志明何斌颜哲鲁超范程颖
Owner TONGJI UNIV