Does MEMS have application potential in the field of unmanned systems?
MEMS inertial navigation has developed rapidly in the past few decades, and has been more and more used in the field of unmanned systems. As the main development direction of future inertial navigation, it is showing strong potential and good application prospects.
Drone
In recent years, micro drones have played an increasingly important role in the military and civilian fields. In order to achieve the positioning and positioning of the drone itself, the attitude measurement and control system plays a vital role. The heading and attitude measurement and control system is mainly composed of GPS antenna, GPS receiving board, strap-down magnetic sensor, inertial measurement unit, altitude airspeed sensor and conditioning unit. The accuracy of the sensor directly determines the accuracy of the UAV's position and attitude, and the data collected by the sensor calculates the position and attitude information of the UAV through the navigation algorithm.
Currently, UAV navigation mainly adopts the method of combining MEMS inertial navigation system and GPS, which can improve the accuracy of the system and shorten the initial alignment time. Nowadays, the accuracy of the navigation system on the UAV is consumer-grade, such as the accuracy of InvensenseMP6500 is 2°/s. With the improvement of the accuracy of MEMS devices and the reduction of cost, the navigation accuracy of the UAV will increase in the future.
Unmanned vehicle
Unmanned vehicles use on-board sensors to perceive the external environment, and obtain vehicle position, posture information, and obstacle information to control the vehicle's speed, steering, start and stop, etc.
When an unmanned vehicle walks under a tall building and the GPS is blocked and cannot work normally, the short-term accuracy of the inertial navigation system on the unmanned vehicle can meet the needs of the vehicle to move forward autonomously. MEMS inertial navigation systems on unmanned vehicles generally require high accuracy.
Unmanned ship
Due to border patrols, water quality exploration and other tasks, ordinary ship equipment is more dangerous and costly, resulting in rapid development of unmanned ship technology. Obtaining the position and attitude information of unmanned ships is an important prerequisite for unmanned ships to carry out their work autonomously.
Nowadays, the sensors equipped on unmanned ships mainly include GPS, MEMS inertial navigation system and obstacle avoidance radar. With the improvement of the accuracy of MEMS inertial navigation system, the inertial navigation system plays a vital role in the acquisition of position and attitude information of unmanned ships. The MEMS inertial navigation system mounted on the unmanned ship can meet the needs of general consumer-grade low to medium accuracy.
MEMS inertial navigation is not only used in our living environment, but also realizes various unmanned operations. In the future, with the continuous improvement of MEMS inertial navigation accuracy and stability, MEMS inertial navigation technology will also be applied in the aerospace field, such as spacecraft, satellites and other unmanned systems, and become an important member.
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