Wireless monitoring and early warning system for deep foundation pit comprehensive parameters

Abstract

The invention discloses a wireless monitoring and early warning system for deep foundation pit comprehensive parameters. The wireless monitoring and early warning system comprises at least one measurement node arranged in a deep foundation pit, a Zigbee-GPRS gateway, a central server and a user warning terminal. The measurement nodes transmit measured data to the Zigbee-GPRS gateway through a Zigbee network. The Zigbee-GPRS gateway receives the data transmitted by all the measurement nodes and transmits the data to the central server through a GPRS network. The central server processes the data and judges the data through a database inside the central server. If data abnormity is found, an alarm instruction is generated and sent to the user warning terminal through the GPRS network, so that an alarm is given. According to the wireless monitoring and early warning system, automatic monitoring and early warning are conducted on the deep foundation pit parameters such as the inclination degree, the reinforcement stress, the soil pressure and the water pressure through the wireless sensing data communication network and through combination with the advanced computer information technology.

Description

technical field [0001] The invention relates to the technical field of wireless monitoring of deep foundation pit parameters, in particular to a wireless monitoring and early warning system for comprehensive parameters of deep foundation pits. Background technique [0002] The monitoring method of traditional deep foundation pit parameters is generally as follows: bury corresponding stress gauges, strain gauges, earth pressure cells, pore water pressure gauges and displacement measuring points at predetermined measuring points, except for displacement using theodolite or level (most of them now use full Station instrument) except for direct visual reading, the rest need to use secondary instruments to receive sensor signals. In actual engineering, stress gauges, strain gauges, earth pressure cells, and pore water pressure gauges often use steel strings, and the frequency of the sensor is received through a secondary instrument (frequency meter). According to the relationship...

AI Technical Summary

Problems solved by technology

[0003] In addition, some conventional monitoring instruments and methods also have some fundamental defects: point measurement, less information; difficult to achieve distributed monitoring, often missing some important information for engineering safety; poor durability; vulnerable to strong Electromagnetic field interference will affect the measurement progress; it is not suitable for harsh environments such as flammable, explosive, high temperature, and lightning strike areas; it is inconvenient for long-distance telemetry and monitoring, etc.

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