Intelligent scaffold fastener with function of measuring stress change

A stress change and scaffolding technology, applied in the field of scaffolding, can solve the problems of long test cycle, easy connection of wrong wire positions, large workload of wired cables, etc., and achieves the effect of strong anti-electromagnetic interference ability, simple and optimized design, and short monitoring cycle.

Inactive Publication Date: 2014-07-09
RES INST OF HIGHWAY MINIST OF TRANSPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical method has the advantages of high data transmission efficiency and mature technology, in the test of large-scale scaffold structures, as the building area continues to increase, the number of sensors and the amount of wired cables increase sharply, resulting in the layout and evacuation of wired cables on site. The workload is heavy, the test cycle is long, and the efficiency is low, which may even lead to the difficulty of implementing the wiring workload of several kilometers of wired cables
The distribution of many wired cables is complicated and messy, and it is easy to connect the wrong wires, which will bring irreparable losses to the later data processing, etc.
Furthermore, the traditional wired cable transmission method adopts analog signal transmission, which is easy to cause crosstalk between cables.
In addition, the analog signal is also significantly disturbed by temperature and electromagnetic waves, which makes the data unable to correctly reflect the bridge strain monitoring information

Method used

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  • Intelligent scaffold fastener with function of measuring stress change
  • Intelligent scaffold fastener with function of measuring stress change
  • Intelligent scaffold fastener with function of measuring stress change

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0022] Such as figure 1 with figure 2 As shown, an intelligent scaffold fastener capable of measuring stress changes according to the present invention includes a scaffold fastener and an intelligent strain monitoring device attached to the scaffold fastener.

[0023] In the above example, if image 3 As shown, the intelligent strain monitoring device includes a full-bridge strain sensor, a signal conditioning amplifier, a data processor, and a wireless transmission system, wherein the full-bridge strain sensor is connected to the signal conditioning amplifier, and the data processor is connected to the signal conditioning amplifier respectively. The conditioning amplifier and the wireless transmission system are connected.

[0024] In the above embodiments, in order to meet the high data volume transmission of the last few hops of the entire wireless transmission system network, the wireless transmission system preferably uses the Zigbee protocol for data transmission, so ...

Embodiment 2

[0029] Such as figure 1 with figure 2 As shown, an intelligent scaffold fastener capable of measuring stress changes according to the present invention includes a scaffold fastener and an intelligent strain monitoring device attached to the scaffold fastener.

[0030] In the above example, if Figure 4 As shown, the intelligent strain monitoring device includes the following components: a full-bridge strain sensor, an AD converter, a microprocessor, a power supply, a wireless transmission system, and an alarm, wherein the full-bridge strain sensor is connected to the AD converter, The microprocessor is respectively connected with the AD converter, the wireless transmission system and the alarm, and the power supply is respectively connected with the AD converter, the microprocessor and the wireless transmission system. Specifically, the AD converter is preferably an AD7730, and the microprocessor is preferably an Atmega8, that is, a single-chip microcomputer chip Atmega8. ...

Embodiment 3

[0037] Such as figure 1 with figure 2 As shown, the structural setting and application of a kind of intelligent scaffold fastener capable of measuring stress changes of the present invention are the same as those in Embodiment 1, wherein, as image 3 As shown, the basic structure of the intelligent strain monitoring device is the same as that in Embodiment 1; specifically, the full-bridge strain sensor is a resistance strain sensor.

[0038] In the above embodiment, the signal conditioning amplifier is preferably a DC signal amplifier.

[0039] In the above embodiment, the electric bridge of the resistance strain sensor is a strain gauge bridge, and the strain gauge bridge includes strain gauges. Preferably, the output end of the strain gauge bridge is connected with the signal conditioning amplifier, and the bridge includes 4 strain gauges R1, R2, R3 and R4 of 1K. During work, two strain gauges are pressed, and the two strain gauges are pressed. Under tension, the sign of...

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PUM

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Abstract

The invention relates to the technical field of scaffolding, in particular to an intelligent scaffold fastener with a function of measuring stress change. The intelligent scaffold fastener comprises a fastener body and an intelligent stress change monitor attached to the fastener body. Compared with the prior art, the intelligent scaffold fastener is simple and better in design and convenient to carry and is capable of sensing stress change in real time; the stress change of the fastener can be monitored in real time; the defects caused by large-scale wiring of the traditional stress chain monitoring equipment are avoided effectively; wiring-free monitoring is achieved, monitoring period is short, and efficiency is high; the intelligent scaffold fastener is high in electromagnetic interference resistance, good in stability, directly applicable to practical engineering, and suitable for stress monitoring for industrial production and various engineering structure scaffold fasteners.

Description

technical field [0001] The invention relates to the technical field of scaffolding, in particular to an intelligent scaffold fastener capable of measuring stress changes. Background technique [0002] There are many types of scaffolding, such as door-type scaffolding, bowl-buckle scaffolding, bolt-type scaffolding, disc-type scaffolding, square tower-type scaffolding, fastener-type scaffolding, etc. In addition, there are various types of climbing frames for related applications. The most widely used is the fastener scaffolding. With the emergence of a large number of modern large-scale building systems, fastener-type steel pipe scaffolding can no longer meet the needs of building construction development. In special engineering occasions, it is especially necessary to monitor scaffolding fasteners. [0003] At present, the commonly used strain monitoring of scaffold fasteners is mainly based on the strain monitoring of cable transmission. In the strain monitoring of wired...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G7/06G01L1/22
Inventor 蔡曙日倪振松刘智刘京郭佳宿健林潘
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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