IMU shock absorption and heat insulation device based on silica gel and preparation method

Abstract

The invention discloses an IMU shock absorption and heat insulation device based on silica gel and a preparation method, and belongs to the field of inertial navigation systems. The IMU shock absorption and heat insulation device can reduce high-frequency vibration and relieve the influence of temperature change on an IMU. The IMU shock absorption and heat insulation device comprises a pressing plate, a silica gel shock absorption and heat insulation body, an IMU sensor, a flat cable, a printed circuit board and a bottom plate, wherein the flat cable is connected with the printed circuit board; the printed circuit board is connected with the IMU sensor; the IMU sensor and the printed circuit board are wrapped in the silica gel shock absorption and heat insulation body; the pressing plate is arranged at the top of the silica gel shock absorption and heat insulation body; the silica gel shock absorption and heat insulation body is fixed to the bottom plate; and the bottom plate is connected with the pressing plate. The IMU shock absorption and heat insulation device is simple and compact in structure, convenient and fast to mount, high in production efficiency, low in material cost and good in shock absorption and heat insulation effect.

Description

technical field [0001] The invention relates to the technical field of shock absorption and heat insulation of an inertial navigation measurement unit, in particular to a silica gel-based IMU shock absorption and heat insulation device and a preparation method thereof. Background technique [0002] Inertial navigation has many advantages: continuous work, rarely hardware failure; does not require any external information and does not radiate any information, and can navigate in any medium and under any environmental conditions; can output the position, speed and attitude of the carrier and other navigation information; the frequency bandwidth of the system can provide at least 50Hz navigation information, and can track any maneuvering movement of the carrier; the navigation output data is stable and has excellent short-term stability. The core components of the inertial measurement unit (Inertial Measurement Unit, IMU) include: accelerometer and gyroscope, IMU processor, etc...

AI Technical Summary

Problems solved by technology

However, the IMU sensor is light in weight and small in size, and has high requirements on the vibration environment. Different temperature environments will cause errors in the measured values ​​of the IMU, so there are high requirements for its shock absorption and heat insulation structure.

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