GPS (global positioning system), IMU (inertial measurement unit), magnetometer and barometer combinational navigation system device

Abstract

The invention discloses a GPS (global positioning system), IMU (inertial measurement unit), magnetometer and barometer combinational navigation system device, which is structurally characterized in that a low-noise power supply output by a power supply conversion module is respectively connected with a main control unit, an accelerometer, a magnetometer, a gyroscope, a barometer, a GPS module and a ZigBee module, a high-efficient power supply output by the power supply conversion module is respectively connected with an RS-232 chip and a USART transmitting and receiving module, the main control unit is respectively connected with a USART bus, an I2C (inter-integrated circuit) bus, an SPI (serial peripheral interface) bus and the USART transmitting and receiving module through a main controller, the USART bus is respectively connected with the accelerometer and the magnetometer, the I2C bus is respectively connected with the gyroscope and the barometer, the SPI bus is respectively connected with the GPS module and the ZigBee module, and the USART transmitting and receiving module is connected with the RS-232 chip. The device has a compact structure, the overall size is small-scaled, the power consumption is low, a data processing speed is fast, various kinds of sensors are adopted for united positioning, so that the limitation on geographical application of a single positioning mode is overcome, and the precision and the accuracy of positioning are further improved.

Description

Technical field [0001] The invention relates to a GPS, IMU, magnetometer and barometer integrated navigation system device. Background technique [0002] GPS refers to the real-time dynamic high-precision positioning technology based on global satellite navigation signals. It is provided through the differential signal of a single or reference station network. Based on a specific differential calculation model, the user terminal obtains the true three-dimensional earth space coordinates in real time. Mainly suitable for outdoor positioning occasions. [0003] MEMS: Abbreviation for Micro Electro Mechanical systems, that is, Micro Electro Mechanical System. Refers to the technology of designing, processing, manufacturing, measuring and controlling micro / nano materials. It can combine mechanical components, optical systems, drive components, and electrical control systems into a micro system that is an integral unit. This kind of microelectronic mechanical system can not only coll...

AI Technical Summary

Problems solved by technology

[0017] As an integrated navigation system focusing on wide application, the miniaturization of the device is imperative, but the number of sensors integrated in it is already more than the original single-system navigation device, plus the large number of sensors required by these sensors The peripheral circuit makes the miniaturization of the module another technical difficulty that needs to be solved

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