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Low frequency vibration displacement sensor networking method, system and device

A displacement sensor and low-frequency vibration technology, applied in the field of measurement, can solve problems such as ultra-low frequency component amplitude and phase distortion, and achieve the effect of large time-domain correlation

Inactive Publication Date: 2017-09-08
薛天
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the amplitude-frequency characteristics of the low-frequency compensation circuit itself, the ultra-low frequency components in the electrical signal output by the sensor may be distorted in amplitude and phase

Method used

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  • Low frequency vibration displacement sensor networking method, system and device
  • Low frequency vibration displacement sensor networking method, system and device
  • Low frequency vibration displacement sensor networking method, system and device

Examples

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no. 1 example

[0049] Please refer to image 3 , image 3 It is a schematic flow chart of the networking method for low-frequency vibration displacement sensors provided by the first embodiment of the present invention. The method is applied to a communicatively connected computing device 100 and a plurality of sensors 400 . The specific flow of the low-frequency vibration displacement sensor networking method will be described in detail below.

[0050] Step S110 , multiple sensors 400 respectively send sampling signals to the computing device 100 .

[0051] In this embodiment, when the collection results are synchronized, multiple sensors 400 send the sampling signals collected at the distribution points to the computing device 100 . Wherein, the arrangement point refers to the position where the sensor 400 is set, for example, somewhere in a dam.

[0052] In the implementation of this embodiment, the acquisition instrument 300 collects sampling signals through an analog acquisition car...

no. 2 example

[0088] Please refer to Figure 7 , Figure 7 It is a schematic flow chart of the networking method for low-frequency vibration displacement sensors provided by the second embodiment of the present invention. The method is applied to a computing device 100 communicatively coupled to a plurality of sensors 400 . The method is described in detail below.

[0089] Step S210 , receiving sampling signals sent by multiple sensors 400 .

[0090] Step S220, performing amplitude-frequency compensation on the received sampling signal by using the spectrum difference method.

[0091] Step S230, performing time-domain compensation on the amplitude-frequency-compensated sampled signal, so as to realize time-domain synchronization of the sampled signal.

[0092] Please refer to Figure 8 , Figure 8 Yes Figure 7 A schematic flowchart of the sub-steps included in step S230. The step S230 may include a sub-step S231 and a sub-step S232.

[0093] Sub-step S231, calculating respective t...

no. 3 example

[0100] Please refer to Figure 10 , Figure 10 It is a schematic block diagram of the low-frequency vibration displacement sensor networking device 200 provided by the third embodiment of the present invention. The low-frequency vibration displacement sensor networking device 200 is applied to a computing device 100 communicatively connected to a plurality of sensors 400 . The low-frequency vibration displacement sensor networking device 200 includes a receiving module 210 , an amplitude-frequency compensation module 220 and a time domain compensation module 230 .

[0101] The receiving module 210 is configured to receive sampling signals sent by multiple sensors 400 .

[0102] In this embodiment, the receiving module 210 is configured to execute step S210, and for a specific description of the receiving module 210, reference may be made to the description of step S110.

[0103] The amplitude-frequency compensation module 220 is configured to perform amplitude-frequency com...

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Abstract

The invention provides a low frequency vibration displacement sensor networking method, system and device. The low frequency vibration displacement sensor networking method is applied to a plurality of sensors and computing devices in communicational connection. The method includes that the sensors send sampling signals to the computing devices separately; the computing devices utilize a frequency spectrum difference value method for performing amplitude frequency compensation on received sampling signals; the computing devices perform time domain compensation on the sampling signals subjected to amplitude frequency compensation so as to realize sampling signal time domain synchronization. Therefore, synchronous acquisition of data of the sensors in multi-spot distribution is ensured and the time domain relevance maximization is achieved.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a method, system and device for networking low-frequency vibration displacement sensors. Background technique [0002] In the fields of earthquake monitoring and dam monitoring, the large-scale network monitoring method of low-frequency vibration displacement sensors with the vibration pickup as the sensing core will be used to realize the monitoring of earthquakes and dams. In the existing low-frequency vibration displacement sensor, the back-end integral compensation circuit needs to perform low-frequency compensation for the signal of the vibration pickup lower than the natural vibration frequency to ensure the consistency of the output signal. Due to the amplitude-frequency characteristics of the low-frequency compensation circuit itself, the ultra-low frequency component in the electrical signal finally output by the sensor may be distorted in amplitude and phase. Con...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 薛天
Owner 薛天
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