Light and small integrated fiber optic inertial navigation system for unmanned driving

Abstract

The invention discloses a light and small integrated optical fiber inertial navigation system for unmanned driving, comprising: a base plate, a cavity and a cover; the base plate is installed at the bottom of the cavity, and the cover is installed on the cavity; The X-axis sensitive ring is installed upward, and the light source assembly is installed in the negative direction; the Y-axis sensitive ring is installed in the positive direction of the Y-axis outside the cavity, and the navigation board and the interface board are installed in the negative direction; the top of the cavity is installed with a gyro The main board, the Z-axis sensitive ring is installed on the inner top of the cavity, and the meter-adding component is also installed in the cavity, and the Z-axis sensitive ring is located on the upper part of the meter-adding component; the X-axis sensitive ring, the Y-axis sensitive ring and the Z-axis sensitive ring are all It is connected with the gyro main board; both the gyro main board and the meter adding component are connected to the navigation board through the interface board; a power supply component is installed on the bottom plate, and the power supply component is located at the lower part of the meter adding component. The light and small integrated optical fiber inertial navigation system for unmanned driving provided by the invention has good heat dissipation performance.

Description

technical field [0001] The invention relates to the technical field of strapdown inertial navigation, and more specifically relates to a light and small integrated optical fiber inertial navigation system for unmanned driving. Background technique [0002] A typical unmanned driving system includes three parts: environment perception, planning decision-making, and vehicle motion control. They are designed to solve the problems of "where am I", "where is the destination" and "how to get there". Technology is the key to solving the "where am I" problem. The vehicle body positioning results given by positioning technology are not only applied to the global and local path planning of unmanned driving, but also affect the calculation of related parameters in each vehicle motion control cycle. The higher the intelligent level of the car, the more the proportion of machine driving will be, and the impact of positioning accuracy on planning decision-making and motion control will a...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing MEMS inertial navigation system is greatly affected by temperature, and the heat dissipation effect after integration is not very good

For example, a 210mm×160mm×160mm optical fiber inertial navigation system, inertial navigation components ≤ 6kg, GNSS antenna ≤ 0.2kg, large size, heavy weight, can not meet the requirements of light and small, and the internal temperature of the normal inertial navigation system Reaching about 8°C will greatly affect the working performance

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