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Structural health monitoring system and method based on ZigBee wireless sensor network and piezoelectric sensor

A piezoelectric sensor and wireless transmission technology, applied in the field of engineering structure health monitoring, can solve problems such as large-scale networking of unfavorable sensors, complicated wire connections, and wrong monitoring results, to simplify wiring complexity, improve transmission efficiency, and reduce The effect of operation and maintenance costs

Pending Publication Date: 2021-02-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the current structural health monitoring methods based on Lamb waves and piezoelectric sensor arrays are connected by wires in practical engineering applications or in laboratory research, which results in densely arranged sensor wires. It is complicated, which brings great inconvenience to the construction on site, and is not conducive to the large-scale networking of sensors
In addition, the wired connection method is difficult to maintain and troubleshoot, which greatly increases the cost of operation and maintenance. In addition, if a connection line fails, it will seriously affect the transmission of signals, reduce the accuracy of damage monitoring, and even cause errors in monitoring results. cause serious consequences

Method used

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  • Structural health monitoring system and method based on ZigBee wireless sensor network and piezoelectric sensor
  • Structural health monitoring system and method based on ZigBee wireless sensor network and piezoelectric sensor
  • Structural health monitoring system and method based on ZigBee wireless sensor network and piezoelectric sensor

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Experimental program
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Embodiment 1

[0027] Embodiment 1: Aiming at indoor large-scale operating equipment, multiple key parts need to be monitored online in real time, so as to find loose and faulty parts in time, so as to avoid danger and economic loss. However, dense wiring will affect its normal work, and monitoring is inconvenient. The structural health monitoring system based on ZigBee wireless sensor network and piezoelectric sensors is used for online real-time monitoring.

[0028] Such as Figure 1-Figure 2 As shown, a structural health monitoring system based on ZigBee wireless sensor network and piezoelectric sensor, including C terminal, wireless transmission unit, RF radio frequency antenna, ZigBee network, signal generator, power amplifier, signal interface unit, piezoelectric sensor Array unit, charge amplifier, data acquisition card, power module unit.

[0029] The wireless transmission unit is composed of a ZigBee chip whose model is CC2530. In this embodiment, a 64KB flash memory block and a vo...

Embodiment 2

[0047] Example 2: Aiming at the problem that the elbow of a 50-meter-long slurry delivery pipeline in the room is prone to wear and tear, and it is easy to cause leakage after long-term use but cannot be detected in time, a structural health monitoring system based on ZigBee wireless sensor network and piezoelectric sensors is used to solve the problem. Carry out online real-time monitoring.

[0048] Such as figure 1 As shown, a structural health monitoring system based on ZigBee wireless sensor network and piezoelectric sensor, including PC terminal, wireless transmission unit, RF radio frequency antenna, ZigBee network, signal generator, power amplifier, signal interface unit, piezoelectric sensor Array unit, charge amplifier, data acquisition card, power module unit.

[0049] The wireless transmission unit is a ZigBee chip of model cc2530, which utilizes a 128KB flash memory block and a voltage of 3.6V.

[0050] The AVDD1 pin of the wireless transmission unit CC2530 chip ...

Embodiment 3

[0067] Example 3: In view of the long-term use of the tee pipe of the outdoor slurry transportation pipeline, which is prone to wear, corrosion, and leakage and cannot be found in time to cause economic losses, a structural health monitoring system based on ZigBee wireless sensor network and piezoelectric sensors is used to monitor it. Online real-time monitoring.

[0068] Such as figure 1 As shown, a structural health monitoring system based on ZigBee wireless sensor network and piezoelectric sensor, including PC terminal, wireless transmission unit, RF radio frequency antenna, ZigBee network, signal generator, power amplifier, signal interface unit, piezoelectric sensor Array unit, charge amplifier, data acquisition card, power module unit.

[0069] The wireless transmission unit is a ZigBee chip of model cc2530, which utilizes a 128KB flash memory block and a voltage of 3.6V.

[0070] The AVDD1 pin of the wireless transmission unit CC2530 chip is connected to the RS-232 s...

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Abstract

The invention relates to a structure health monitoring system and method based on a ZigBee wireless sensor network and a piezoelectric sensor, and belongs to the technical field of engineering structure health monitoring. The system comprises a PC terminal, a wireless transmission unit, an RF antenna, a ZigBee network, a signal generator, a power amplifier, a signal interface unit, a piezoelectricsensor array unit, a charge amplifier, a data acquisition card and a power supply module unit. The piezoelectric sensor array unit is formed by arranging piezoelectric sensors into various differenttopological structures according to different requirements; and the wireless transmission unit is composed of a ZigBee chip. According to the invention, the ZigBee wireless sensor network is used fortransmitting a Lamb wave structure damage signal acquired by the piezoelectric sensor array unit so that the real-time online monitoring of the monitored structure is realized. Data is transmitted ina wireless mode, the wiring complexity of the structural health monitoring system can be effectively simplified, large-scale networking of the piezoelectric sensors is facilitated, the operation and maintenance cost is reduced, and the accuracy and real-time performance of the structural health monitoring system are improved.

Description

technical field [0001] The invention relates to a structure health monitoring system and method based on a ZigBee wireless sensor network and a piezoelectric sensor, belonging to the technical field of engineering structure health monitoring. Background technique [0002] Structural health monitoring technology is to use the sensor network integrated inside or on the surface of the structure to perceive the state of the structure, obtain information related to the health state of the structure online and in real time, and then use the relevant information processing methods to extract the characteristic parameters related to the damage. Identify the damage status of the structure and realize the self-diagnosis of the structure health. [0003] At present, structural health monitoring technology has been widely used in aerospace, civil engineering, pipeline, military, electric power and many other industrial fields, and has achieved good results. Because the Lamb wave is sen...

Claims

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Application Information

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IPC IPC(8): G01N29/04H04W4/38H04W84/18
CPCG01N29/043H04W4/38H04W84/18
Inventor 叶波孔琼英邓为权
Owner KUNMING UNIV OF SCI & TECH
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