A ground pressure sensor based on three-dimensional space monitoring

Abstract

The invention provides a three-dimensional space monitoring based ground pressure sensor. The three-dimensional space monitoring based ground pressure sensor comprises an elliptic housing, an outgoing line device, a circuit board, and thee mutually-vertical ground pressure monitoring heads; the outgoing line device is arranged at the upper end of the elliptic housing, comprising an A0 compressing nut, an A0 cushion with pores, an A0 pore-free cushion, an A0 sealing ring and a connecting joint. With the adoption of the three-dimensional space monitoring based ground pressure sensor, cement, sand, water and other materials cannot enter the elliptic housing, so that the safety of devices in the elliptic housing can be ensured, and a good working environment can be created.

Description

technical field [0001] The invention belongs to the field of ground pressure sensors, in particular to a ground pressure sensor based on three-dimensional space monitoring. Background technique [0002] At present, in the field of ground pressure monitoring, various sensors have been widely used for monitoring. The pressure sensors currently used mainly have the following problems: 1. Real spatial three-dimensional monitoring cannot be achieved. For example, Publication No.: 202033140U, Publication Date: 2011-11-09, a utility model technical solution named "Three-Dimensional Stress Collector", this technical solution can only realize the pressure on the plane perpendicular to the length direction of the metal cylinder. The monitoring of the pressure in the direction parallel to the metal cylinder cannot be monitored, so this technical solution is mainly aimed at the monitoring of the pressure in one or more planes parallel to each other, and it is impossible to monitor the p...

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Problems solved by technology

[0002] At present, in the field of ground pressure monitoring, various sensors have been widely used for monitoring. The pressure sensors currently used mainly have the following problems: 1. Real three-dimensional monitoring of space cannot be achieved

For example, Publication No.: 202033140U, Publication Date: 2011-11-09, a utility model technical solution named "Three-Dimensional Stress Collector", this technical solution can only realize the pressure on the plane perpendicular to the length direction of the metal cylinder. The monitoring of the pressure in the direction parallel to the metal cylinder cannot be monitored, so this technical solution is mainly aimed at the monitoring of the pressure in one or more planes parallel to each other, and it is impossible to monitor the pressure in the vertical direction of the above plane. Incoming pressure monitoring

If a technology similar to the above is used to realize three-dimensional monitoring, multiple monitoring devices must be arranged at different angles, and multiple monitoring devices cooperate with each other to complete three-dimensional monitoring, which will inevitably increase time and economic costs and affect the accuracy of monitoring

2. It can only be monitored according to the predetermined direction of pressure. Once the direction of pressure changes, the pressure change cannot be monitored timely and accurately.

3. Large drift of monitoring data, zero return error, poor system stability and workability

In the prior art, in order to achieve accurate monitoring data and improve monitoring sensitivity, pressure-sensing components such as strain resistors and piezoresistors are often arranged on the surface of the device, which makes the above-mentioned components easy to be crushed by earth and rocks. After the pressure is applied, it cannot return to zero, which seriously affects the monitoring effect

4. In the prior art, the shape of the pressure sensor is mainly square and cylindrical. The installation of these shapes is more complicated, the diameter of the required installation hole is large, and the installation cost is high. Moreover, the force of these shapes is unreasonable. Under the action of external high pressure , prone to deformation, or even crushed

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