A method, device and system for spatial positioning based on multi-magnetic beacon
A space positioning and target location technology, applied in satellite radio beacon positioning systems, measuring devices, radio wave measuring systems, etc., can solve problems such as high power consumption, limited service range, and susceptibility to noise interference, and achieve high positioning accuracy , high-precision positioning and directional services, and good penetrating effects
Active Publication Date: 2021-01-05
HARBIN INST OF TECH
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Problems solved by technology
[0004] WiFi positioning is mainly used in indoor places. It uses wireless fidelity technology to precisely and accurately locate people or objects, but it consumes a lot of power and is limited by the service range. There is no data such as direction and speed, and the navigation function cannot be realized.
ZigBee positioning is mainly used between various electronic devices with short distance, low power consumption and low transmission rate, but it can only be used for private network, and cannot be applied to applications with high transmission rate
Method used
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Embodiment 1
[0033] to combine image 3 As shown, the multi-magnetic beacon-based spatial positioning method provided in this embodiment includes:
[0034] Step 31, making three magnetic beacons.
[0035] A square wooden frame with a known area S (without ferrous material connections) is used to wind a copper coil with a known number of turns N, and then three beacons are installed at the target position in the space as the signal source, and the size Three sets of sinusoidal signals with known and different frequencies are added to the coil of the magnetic beacon, and a magnetic sensor is installed at the target position. At this time, the magnetic moment M generated by the magnetic beacon is:
[0036] M=A·N·I
[0037] Then there is: the magnetic moment generated by the magnetic beacon 1 is M 1 , the magnetic moment generated by magnetic beacon 2 is M 2 , the magnetic moment generated by the magnetic beacon 3 is M 3 .
[0038] Step 32, setting the positions and output frequencies o...
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The invention provides a space positioning method, device and system based on multiple magnetic beacons. The method comprises steps that vector components of magnetic induction intensity of three multiple magnetic beacons at the target position in three directions are determined through real-time measurement data of a magnetic sensor; the position information of the magnetic sensor is determined according to the position of the magnetic induction intensity in the space rectangular coordinate system and relationships among the vector components of the magnetic induction intensity in the three directions. The method is advantaged in that when GPS signals in indoor and underground occasions can not be used, stable and high-precision positioning orientation service can be still guaranteed, and high positioning precision, good penetration and no direct influence of severe weather conditions and day and night change are realized.
Description
technical field [0001] The invention relates to a space positioning method, device and system based on a multi-magnetic beacon, belonging to the technical field of positioning and orientation. Background technique [0002] In the prior art in this field, spatial positioning methods generally include GPS positioning, WiFi positioning, ZigBee positioning, Bluetooth positioning, and the like. [0003] Among them, GPS positioning is a space rendezvous and fixed-point navigation system capable of time service and distance measurement, which can provide continuous, real-time, high-precision three-dimensional position, speed and time information to users around the world. Users need to hold receivers or install receivers on cars, ships, and airplanes to receive satellite signals, and then calculate the position after receiving signals from satellites. However, GPS positioning requires a built-in satellite signal receiving module in the terminal, and the positioning accuracy is gre...
Claims
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IPC IPC(8): G01S19/48G01C21/04
CPCG01C21/04G01S19/48
Inventor 夏红伟王冠王常虹考永贵马广程
Owner HARBIN INST OF TECH