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Multi-solenoidal magnetic field signal separation method, device and equipment and readable storage medium

A technology of magnetic field signal and separation method, which is applied in directions such as ground navigation to achieve the effect of precise separation

Active Publication Date: 2021-05-28
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a separation method, device, equipment and readable storage medium of multi-solenoid magnetic field signals, aiming at solving the problem of magnetometer The technical problem of separating the magnetic field information of multiple magnetic beacons from the measured magnetic field

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  • Multi-solenoidal magnetic field signal separation method, device and equipment and readable storage medium
  • Multi-solenoidal magnetic field signal separation method, device and equipment and readable storage medium
  • Multi-solenoidal magnetic field signal separation method, device and equipment and readable storage medium

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[0083] Based on the first embodiment, the second embodiment of the separation method of the multi-solenoid magnetic field signal of the present invention is proposed, referring to image 3 , in this embodiment, step S20 includes:

[0084] Step S21, subtracting the background magnetic field from the total magnetic field to determine the first solenoid superimposed magnetic field in the total magnetic field;

[0085] Step S22, smoothing the first solenoid superimposed magnetic field based on a preset first time window to obtain a first solenoid magnetic field in the first solenoid superimposed magnetic field, wherein the first The duration of a time window is an integer multiple of the second largest cycle in each AC cycle corresponding to the first solenoid superimposed magnetic field, and the duration of the first time window is less than or equal to the first solenoid magnetic field corresponding to half of the AC cycle.

[0086] In this embodiment, the total magnetic field...

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Abstract

The invention discloses a multi-solenoidal magnetic field signal separation method, device and equipment and a readable storage medium, and the method comprises the steps of: determining a total magnetic field of a target measurement point, and determining a background magnetic field of the target measurement point; determining a first solenoid superimposed magnetic field in the total magnetic field based on the total magnetic field and the background magnetic field, and determining a first solenoidal magnetic field in the first solenoid superimposed magnetic field based on the first solenoid superimposed magnetic field; based on the first solenoid superimposed magnetic field and the first solenoidal magnetic field, determining a second solenoid superimposed magnetic field corresponding to the target measurement point; and taking the second solenoid superimposed magnetic field as the first solenoid superimposed magnetic field, and performing circulating execution until each solenoidal magnetic field in the solenoid superimposed magnetic fields corresponding to the target measurement point is separated. The magnetic field signals generated by the solenoids can be separated, and a foundation is laid for the positioning process based on the multiple magnetic beacons.

Description

technical field [0001] The present invention relates to the technical field of indoor positioning, in particular to a method, device, equipment and readable storage medium for separating multi-solenoid magnetic field signals. Background technique [0002] With the continuous improvement of indoor location service demand, indoor positioning technology has developed rapidly, such as inertial navigation based on MEMS sensors, pedestrian trajectory calculation, Bluetooth and WiFi positioning based on wireless signals, geomagnetic positioning based on magnetic field signals and other positioning technologies. Among the above-mentioned indoor positioning technologies, the indoor positioning based on the geomagnetic signal does not require additional hardware equipment because the signal source is the earth's inherent magnetic field, so the cost is lower, and because the geomagnetic signal is not affected by multipath effects, its accuracy is also high. will be higher. The positio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/08
CPCG01C21/08
Inventor 王国强程甚男张铁龙
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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