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A kind of indoor room positioning system and method based on bluetooth and rfid

A positioning system and room technology, applied in the field of indoor room positioning systems based on Bluetooth and RFID, can solve problems such as algorithm failure and inability to achieve positioning

Active Publication Date: 2021-08-17
中国计量大学上虞高等研究院有限公司 +1
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Problems solved by technology

For the three-point positioning method, the triangular positioning algorithm, and the centroid positioning algorithm, at least three reference nodes are required, and the three points must not be on the same straight line, otherwise the algorithm will fail and the positioning cannot be achieved;

Method used

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  • A kind of indoor room positioning system and method based on bluetooth and rfid

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Embodiment Construction

[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] Due to the instability of the Bluetooth signal (transmission distance 5-10 meters), it is not practical to obtain parameters such as signal arrival time TOA and signal arrival time difference TDOA. Most indoor positioning uses signal strength, and Bluetooth positioning is used for figure 1 It is possible that each base station can sense the presence of the elderly, and the server side compares the signal strength and draws the wrong conclusion that "the elderly is in the bathroom". However, RFID has the characteristics of controllable transmission distance, stable signal, and convenient distance measurement. Distance (such as the range of 5-10 meters of Bluetooth), the conclusion drawn by ranging is "about 3 meters away from the bathroom" is only more accurate; because the room structure is not known in advance, it is not certain that th...

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Abstract

The invention discloses an indoor room positioning system and method based on bluetooth and RFID. The positioning system includes a base station, a mobile device and a public network server. The base station includes a bluetooth module and an RFID reader, and periodically uploads data to the public Network server, the base station is set in the room; the mobile device is worn on the person under guardianship, and the mobile device is provided with a bluetooth module and an RFID module, and the bluetooth module and the RFID module all have unique IDs, and communicate with the base station through their respective IDs Communication: the public network server stores the information of the person under guardianship, the location information of the base station and the data periodically uploaded by the base station. The positioning method is a positioning method based on a positioning system. According to the monitoring data of the base station, the invention analyzes which room the ward is currently in, and can count the duration of the position, judges whether the behavior of the ward is abnormal and notifies the guardian, and is used to monitor whether the elderly / mentally disabled have abnormal behavior.

Description

technical field [0001] The invention relates to a room positioning method, in particular to an indoor room positioning system and method based on bluetooth and RFID. Background technique [0002] According to the forecast data released by the National Office on Aging, by 2020, the number of disabled elderly people in my country will reach 42 million, the number of elderly people over 80 years old will reach 29 million, and the number of lonely elderly people will reach 118 million. Various practical problems such as disability, advanced age, and widowhood have gradually emerged in the course of social development, and the number of key recipients of elderly care services has increased significantly. Abnormal behaviors such as falling asleep on the toilet when going to the bathroom, and sleepwalking in the middle of the night often occur among such people. A new room region localization method is proposed to solve the above problems. [0003] Considering factors such as cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/021H04W4/33H04W4/80H04W64/00
CPCH04W4/021H04W64/003H04W4/33H04W4/80
Inventor 谭劲杨红
Owner 中国计量大学上虞高等研究院有限公司
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