Positioning system and positioning method for sensor auxiliary positioning terminal

Abstract

The invention discloses a positioning system and a positioning method for a sensor auxiliary positioning terminal. The system comprises a GPS (Global Positioning System) positioning unit, a main controller, a wireless communication unit and a sensor unit, wherein the sensor unit consists of at least one sensor; and the sensors are respectively connected with the main controller by virtue of a bus. The method comprises the following step: under the condition that the GPS positioning unit cannot operate normally, utilizing sensors such as a gyroscope, an accelerometer, a magnetometer and an altimeter to assist a hand-held mobile terminal to perform positioning. Under the condition that the GPS positioning unit cannot operate normally, the sensors such as the gyroscope, the accelerometer, the magnetometer and the altimeter are utilized to collect the motion state and position information of the terminal in real time and assist the terminal to perform positioning, the calculation method is simple and practical, the positioning error is small, and the positioning accuracy is higher; the system and the method can be used for effectively ensuring that a server can acquire the position information of a controlled moving object by virtue of the positioning terminal, and can be widely applied to the fields of intelligent mobile telephone positioning, mobile telephone value added service, security and protection, and the like.

Description

technical field [0001] The invention relates to a system and method for positioning a sensor-assisted positioning terminal. Background technique [0002] The GPS global positioning system is a mature and widely used application. Its basic principle is to measure the distance between the known satellite and the user's receiver, and then integrate the data of multiple satellites to calculate the precise position information of the receiver. However, the use of the GPS positioning system has its specific limitations. For example, when the satellite signal is weak, or insufficient satellite information cannot be obtained due to environmental constraints, the positioning cannot be completed. [0003] Handheld terminals with GPS function use satellite signals to perform real-time positioning and report to the main control station. Under tunnels and viaducts where satellite signals are extremely weak or unable to obtain satellite signals, or in environments such as urban high-rise ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device that can use sensors such as gyroscopes, accelerometers, magnetometers, and altimeters to collect terminal motion status and location information in real time to assist when the GPS positioning unit cannot work normally. The terminal performs positioning, the calculation method is simple and practical, the positioning error is small, and the positioning accuracy is high, which can effectively ensure that the server can always obtain the position information of the controlled handheld mobile terminal. The sensor-assisted positioning terminal positioning system and method

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