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Data collection and signal processing method and data collector

A signal processing and data acquisition technology, applied in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as signal distortion, avoid cumulative errors, improve accuracy and repeatability, and improve anti-interference performance Effect

Inactive Publication Date: 2018-04-06
NANJING GUODIAN ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0004] The existing data collectors used at home and abroad generally have low-frequency noise interference signals, and the data collectors based on vibration acceleration sensors have accumulated errors when integrating to obtain the velocity amplitude, and the signal is seriously distorted when the second integration is used to obtain the displacement amplitude. Exceeded the error range allowed by the national standard

Method used

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  • Data collection and signal processing method and data collector
  • Data collection and signal processing method and data collector
  • Data collection and signal processing method and data collector

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] Such as figure 1 As shown, the data collector of the present invention includes a differential amplifier module, an RC high-pass filter module, a data storage module, a CPU, a network module, and a power supply module. The power module supplies power to the overall data collector. The voltage signals measured by multiple vibration acceleration sensors are transmitted to the data collector, and then passed through the differential amplifier module and the RC high-pass filter module in turn, and are received by the CPU for data processing. The processed data is stored in the data storage module and transmitted through the network module. to the server.

[0034] Such as figure 2 As shown, the voltage signal obtained by the vibration acceleration sensor measurement is removed through the differential amplifier module to remove the full-band noise, and then the...

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Abstract

The present invention discloses a data collection and signal processing method and a data collector. According to the method, after collected original signals are subjected to denoising, and the signals are subjected to quadratic linear integral operation to obtain an integral value, namely a signal final processing result; and the original signals are acceleration signals, and the integral valueobtained through the quadratic linear integral operation is a displacement amplitude. The linear integral operation is employed to perform processing of signal data to obtain the displacement amplitude, and therefore, accumulative errors caused by traditional integration can be effectively avoided.

Description

technical field [0001] The invention relates to a data acquisition and signal processing method. Background technique [0002] At present, domestic thermal power plants generally adopt planned maintenance methods, and there are problems of untimely maintenance and excessive maintenance. The condition-based maintenance method refers to the reasonable arrangement of maintenance time according to the health status of the equipment, which not only avoids the danger caused by untimely maintenance, but also reduces the waste of manpower, material resources and financial resources caused by unnecessary downtime maintenance. [0003] The overall architecture of the condition-based maintenance system is composed of vibration acceleration sensors, data collectors, servers, interface machines, network components, server software, client software, etc. Among them, the data collector is installed in the local control box of the monitored equipment, and the accuracy of its collection and...

Claims

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Application Information

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IPC IPC(8): G01D21/00G01H17/00
CPCG01D21/00G01H17/00
Inventor 王海江
Owner NANJING GUODIAN ENVIRONMENTAL PROTECTION TECH
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