GNSS and gyroscope fused high-precision geological disaster monitoring device

Abstract

The invention provides a GNSS and gyroscope fused high-precision geological disaster monitoring device. The device comprises: a monitoring assembly. The monitoring assembly comprises: a monitoring unit, a gyroscope is fixedly mounted in the mounting bottom plate, a mounting bracket is arranged above the gyroscope, the center of the upper part of the mounting bracket is fixedly connected with a GNSS antenna, a circuit board is fixedly mounted in the mounting bottom plate, and the circuit board is provided with an OEM board card and an MEMS accelerometer. The GNSS antenna is connected with the OEM board card. The circuit board is provided with a plurality of joints. The gyroscope is connected with a joint on the circuit board. One side of the bottom of the mounting bottom plate is downwardsconnected with a waterproof joint. The mounting bottom plate is sealed and covered by a glass fiber reinforced plastic cover. The glass fiber reinforced plastic cover is in sealed waterproof connection with the annular side wall of the mounting bottom plate through a waterproof convex ring. A connecting boss is arranged at the bottom of the mounting bottom plate, a waterproof sealing ring mountinggroove is formed in the periphery of the connecting boss, a plurality of arc-shaped bottom heat dissipation holes are formed between the waterproof sealing ring mounting groove and the connecting boss, and a plurality of mounting holes are formed in the periphery of the waterproof sealing ring mounting groove.

Description

technical field [0001] The invention belongs to the technical field of geological disaster monitoring, in particular to the technical field of a high-precision geological disaster monitoring device integrated with a GNSS and a gyroscope. Background technique [0002] Common geological disasters include earthquakes, volcanoes, landslides, debris flows, bottom surface subsidence, ground subsidence, ground fissures, collapses, coal rock and gas explosions, etc. Geological disaster monitoring uses various technologies and methods to measure and monitor geological disaster activities and the dynamic changes of various inducing factors. Automatic monitoring technology involves a wide range of engineering application technologies, including sensor technology, communication technology, Internet technology, etc. [0003] The global satellite navigation system (GNSS) currently includes American GPS, Russian GLONASS, European GALILEO and my country's Beidou satellite navigation system...

AI Technical Summary

Problems solved by technology

One of the most basic and key aspects of Beidou’s high-precision geological disaster monitoring is the perception and data collection of on-site conditions. Rainfall is closely related, and there is no mains access at the monitoring site. In the initial stage, the positioning accuracy of the antenna needs to be verified. The document of Chinese Patent Application Publication No. CN103235328A discloses a method of GNSS and MEMS integrated navigation, combining GNSS and MEMS Accelerometer and gyroscope data can improve the accuracy of integrated navigation. This method can be used for reference in the monitoring and early warning of landslides in geological disaster monitoring. GNSS positioning has the characteristics of high precision, but it cannot ensure the continuity of positioning services. Inertial navigation Technology (INS) has the characteristics of short-term high precision. The combination of the two can synchronously correct the GNSS calculation results through MEMS real-time attitude data, and the component is a high-precision, high-reliability real-time positioning system.

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