High-precision direct positioning method for large hospital patient supervision

A positioning method and high-precision technology, applied in positioning, measuring devices, instruments, etc., can solve the problems of loss of target position information, difficulty in obtaining estimation performance, etc., achieve real-time tracking and positioning, and improve positioning accuracy

Pending Publication Date: 2021-05-25
JIANGSU CANCER HOSPITAL
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  • Abstract
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Problems solved by technology

From the perspective of information theory, the estimation of intermediate parameters will lose part of the target position information, so it is difficult to obtain asymptotically optimal estimation performance

Method used

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  • High-precision direct positioning method for large hospital patient supervision
  • High-precision direct positioning method for large hospital patient supervision
  • High-precision direct positioning method for large hospital patient supervision

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Embodiment Construction

[0038]The invention will now be described in further detail with reference to the drawings.

[0039]Such asfigure 1 The implementation flow chart of the high-precision direct positioning method for the supervision of large hospital patients. In the ward, different locations are arranged in different positions of observation arrays to receive signals from a single patient, and sample the received signal to obtain a received signal matrix; then calculate the extended covariance matrix of the received signal, combined with the direct positioning algorithm and the maximum. The idea of ​​the method, combines all observed arrays to receive signal covariance matrices, build cost functions; finally spectrum search, peak is where the patient's bracelet is in place, wherein the specific steps are:

[0040]Step 1: The observation array arranged in L different positions receives signals from the patient wearing bracelets and samples the received signal:

[0041]Assuming that different patients wear brac...

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Abstract

The invention discloses a high-precision direct positioning method for monitoring patients in a large hospital, which is mainly used for positioning and monitoring the patients in real time in the hospital, determining the positions of the patients and facilitating the management and treatment of the patients in the hospital. The method is attached to a medical patient bracelet, a plurality of fixed observation antenna arrays are arranged at a plurality of places of the hospital, and covariance matrixes of data received by the plurality of observation arrays are comprehensively considered in combination with thoughts of a direct positioning algorithm and a maximum likelihood method, so that signals sent by the patient bracelet are positioned and monitored. The problem that traditional monitoring fails at night is solved, and all-day monitoring can be achieved; and meanwhile, the position information of a target source (a patient bracelet) can be directly obtained from the original received data of the observation array, so that the problem of matching of intermediate parameters and targets in a traditional two-step positioning method is effectively avoided, and the positioning precision is improved.

Description

Technical field[0001]The present invention belongs to the field of passive wireless positioning techniques, and specific relates to a high-precision direct positioning method for the supervision of patients with large hospitals.Background technique[0002]For some large hospitals, the patient will greatly increase management burden, especially when the patient will move freely, it will bring difficulties on time treatment on the nurse station. At present, the hospital is realized by monitoring the combination of the patient by monitoring the viewing and artificial overstere, and is limited to the optical characteristics of the monitoring camera, and it is difficult to achieve effective supervision at night. Therefore, it is important to study a high precision algorithm for patient positioning.[0003]Considering the continuous spread of the patient's bracelet, the radio positioning technique based on the patient bracelet is gradually possible. Traditional wireless positioning technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02
CPCG01S5/0294
Inventor 钱艺萍鲍婷婷张玉倩殷凤
Owner JIANGSU CANCER HOSPITAL
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