Fastener axial stress monitoring system based on Internet-of-Things technology

Abstract

The invention discloses a fastener axial stress monitoring system based on an Internet-of-Things technology. The system comprises a stress sensor, wherein the stress sensor is in communicating connection with a node gateway, the node gateway is in communicating connection with a cloud server through a base station, and the cloud server is in communicating connection with a PC terminal through thebase station; the stress sensor is in communicating connection with the node gateway through a wireless sending terminal; and the stress sensor is connected with the wireless sending terminal througha sensor connection cable. Through the system, tedious wiring is not needed, laying of monitoring points are quickly completed, the problem that a layout is tedious through an existing cable-based stress collection mode can be effectively solved, and long-term monitoring can be realized without an external power source.

Description

technical field [0001] The invention relates to a fastener monitoring system based on Internet of Things technology, which is used for axial stress monitoring of fasteners. Background technique [0002] Fasteners usually refer to parts that are composed of anchor rods, anchor bolts, bolts or studs and nuts to apply axial stress to fasten the connection, and their applications can be found in various fields. On-line monitoring of the axial stress of fasteners is of great significance for evaluating the connection effect and fatigue life of fasteners. However, the long-term real-time online monitoring of stress in the field of domestic fasteners is basically blank. [0003] At present, the axial stress monitoring of fasteners includes strain sensor, vibrating wire sensor, ultrasonic testing and other means. The vibrating wire sensor requires a large installation space and poor accuracy, so it is not suitable for on-line monitoring of the axial stress of fasteners. Among the ...

AI Technical Summary

Problems solved by technology

The vibrating wire sensor requires a large installation space and poor accuracy, so it is not suitable for online monitoring of the axial stress of fasteners

Among the retrieved stress monitors in the field of fasteners, "Stress Measuring Anchor and Using Method" (Application No. 201210223419.4) and "An Anchor Stress Monitor" (Application No. 201621131376.7) all use wired communication , when used frequently, the signal line and the sensor connector are easy to wear and tear, resulting in the exposure of the shielding line, and even poor contact of the signal line

Signal cables are not easy to arrange when laying out the monitoring network

In the "Anchor Cable or Anchor Rod Prestress Automatic Remote Monitoring and Early Warning System" (Patent No. 200820049469.4), it uses wireless communication technology, but each sensor cannot directly communicate with the main computer, and the signal needs to be transmitted to the signal through a cable. Collect the sending device and then transmit it to the host computer, and it cannot be separated from the external power supply to achieve long-term monitoring

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