Method and system for positioning planar remote target based on single magnetic field sensor array
A magnetic field sensor and target positioning technology, which is applied in sensors, medical science, diagnostic recording/measurement, etc., can solve problems such as increased complexity and errors, and achieve high efficiency, low cost, and accurate positioning
Inactive Publication Date: 2012-12-12
安翰科技(武汉)股份有限公司
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Problems solved by technology
Due to the complexity of the calculations involved, the method requires considerable computing power and / or a significant amount of time to complete
The complexity of the method also greatly increases the probability of error
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[0029] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0030] figure 1 It is a schematic diagram of the macroscopic structure of the plane remote target positioning method and system based on a single magnetic field sensor array. In operating environments [10] (not part of this invention), such as patients, or in confined environments such as machinery, fluid handling, and hydraulic systems, there is an array of sensors [12] placed within each other on a specific configuration that will will be further explained here. The sensor array [12] comprises one or more individual sensor units [14] and is evenly distributed on the sensor plane corresponding to the target area [16] in the operating environment [10]. The sensor ...
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The invention provides a method for positioning a planar remote target based on a single magnetic field sensor array. The method comprises the following working steps: step 1, putting a positioning target with a magnetic field in a target area, and putting a magnetic field sensor array to detect a target magnetic field; step 2, putting the target area near a magnetic field sensor array plane; step 3, finding out a point (with the strongest planar magnetic field strength) inside the planar magnetic field by using a magnetic field sensor; step 4, supposing that the point with the strongest spatial magnetic field strength is located at one position A, enabling a tangent plane of a magnetic induction strength curve to go by the point; and step 5, calculating a middle point B of the magnetic field by using equations, and finally calculating a spatial coordinate position of the point with the largest supposed magnetic field strength in the step 4 through a solving equation set in combination with a surface vector equation of the curve and a normal vector of the strongest magnetic field through which the tangent plane passes. With the adoption of the method, the defect in traditional remote positioning is avoided, and the method has the advantages of accurate positioning, low cost, high efficiency and the like.
Description
technical field [0001] The invention relates to a magnetic field positioning method, in particular to a plane remote target positioning method and system based on a single magnetic field sensor array. Background technique [0002] Survey wireless medical capsules are well known in the medical world. The survey capsule sends data back to a receiving and recording device placed outside the body. The patient swallows the capsule and it travels down the digestive tract, collecting and transmitting data along the way to a receiving and recording device. Typically, after one to two days, the disposable capsules are excreted with feces and data such as body temperature, pH, blood pressure, and transit time are recorded for analysis and / or storage for transmission. The industry generally agrees that wireless medical capsules equipped with cameras can be used to capture images, while capsules with drug reservoirs can release various doses of drugs to various regions of the digestiv...
Claims
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IPC IPC(8): A61B5/06
Inventor 段晓东
Owner 安翰科技(武汉)股份有限公司