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Electromagnetic positioning system adopting multi-sensor array

A multi-sensor, electromagnetic positioning technology, applied in the direction of navigation calculation tools, etc., can solve the problems of inability to correct, low measurement accuracy, poor anti-interference ability, etc., to reduce the degree of blur, improve resolution, and improve performance.

Inactive Publication Date: 2017-02-15
天津海运职业学院
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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of poor anti-interference ability and low measurement accuracy of a single sensor in the traditional electromagnetic positioning system, and provide an electromagnetic positioning system using a multi-sensor array. In the case of uncorrectable and external electromagnetic interference dynamics, Realize the correction of spatial coordinates through the constraints of physical location in time

Method used

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Embodiment Construction

[0027] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments, and a three-dimensional array composed of six sensors will be used for illustration and examples.

[0028] figure 1 It is the overall structure diagram of the present invention, the signal generation device that is made up of magnetic source, produces the required magnetic field strength model, in the signal receiving device, multi-sensor array measures the magnetic field strength, and multiple sensors form two groups of three-axis magnetic sensors, each group of three The axial magnetic sensor respectively measures the six-degree-of-freedom attitude data of the target. After the signal is preliminarily processed by the amplification and filtering circuit, the signal is collected by the on-chip ADC of the DSP and transmitted to the DSP. In the DSP, the positioning algorithm and the sensor fusion algorithm are used. Get the attitude informa...

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Abstract

The invention discloses an electromagnetic positioning system adopting a multi-sensor array, and particularly relates to design of a functional multi-sensor array carrying out spatial orientation information acquiring based on the electromagnetic theory. The electromagnetic positioning system comprises a signal transmitting device, a signal receiving device and a signal processing module. The signal transmitting device generates a needed magnetic field model through a triaxial magnetic source. The signal receiving device carries out positioning measurement on a target through the multi-sensor array, the multi-sensor array is integrated on a cube matrix through magnetoresistive sensors with the number being an integer multiple of three, and two triaxial magnetic sensors are formed and each measure a set of data of target postures. The signal processing module positions the target through a positioning algorithm transplanted to a DSP and a sensor fusion algorithm, the positioning result is corrected according to the geometric position of the multi-sensor array after primary positioning, and finally the positioning tracking result is displayed on a PC through communication with an upper computer.

Description

technical field [0001] The invention relates to an electromagnetic positioning system using a multi-sensor array. Background technique [0002] Electromagnetic positioning systems are widely used in 3D simulation and tracking of moving objects. Traditional electromagnetic positioning systems, due to the limited number of sensors and the large amount of environmental electromagnetic interference, range from communication electromagnetic signals to electromagnetic interference of electronic products, including the magnetic field interference of the earth. , have a great impact on electromagnetic measurement and positioning. [0003] The multi-sensor array method can realize multi-point measurement of the tracked object, and at the same time, through the physical and geometric characteristics of the sensor array itself, according to the fusion of multi-sensor measured data, first estimate the position coordinates calculated by each sensor, and then through multi-sensor The fix...

Claims

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Application Information

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IPC IPC(8): G01C21/20
CPCG01C21/20
Inventor 王皓林海燕
Owner 天津海运职业学院
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