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A portable anti-lost method based on active RFID technology

A RFID tag, portable technology, applied in the field of portable anti-lost technology based on active RFID technology, can solve the problems of inconvenient to carry around, easy to be blocked by Bluetooth technology, large battery volume at the detection end, etc., to increase tracking ability and reduce over-distance "False alarms, reducing the effect of classified incidents

Active Publication Date: 2019-02-01
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Bluetooth technology has the disadvantage of being easily blocked, and passive RFID technology will cause a large battery at the detection end, which is not easy to carry around

Method used

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  • A portable anti-lost method based on active RFID technology
  • A portable anti-lost method based on active RFID technology
  • A portable anti-lost method based on active RFID technology

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0023] Such as figure 1 As shown, a portable anti-lost method based on active RFID technology, the portable anti-lost system includes an RFID tag, an RFID portable terminal and a monitoring service platform; the RFID tag and the RFID portable terminal are connected with a radio frequency signal; the RFID tag and the monitoring service The platforms are connected through the public network.

[0024] The RFID tag and the RFID portable terminal are paired and set to ensure that only the paired devices can complete the communication; the RFID tag is bound to the protected item (such as by pasting, bolt connection or lanyard); the RFID tag detects the RFID in real time The signal strength of the signal sent by the portable terminal, and convert the signal strength into a distance value, and compare it with the safety distance threshold set by the system; when the RFID tag detects that the relative distance of the RFID portable terminal is greater than the safety distance threshold,...

specific Embodiment 2

[0026] On the basis of the specific embodiment 1, the RFID tag and the RFID portable terminal write their respective ID information into the Flash of the paired device, so as to ensure that only the paired devices can complete the communication.

specific Embodiment 3

[0027] On the basis of specific embodiment 1 or 2, the specific method for judging whether the relative distance of the RFID tag detected by the RFID portable terminal is greater than the safety distance threshold is as follows: the RFID tag detects the signal of the RFID portable terminal in real time, and obtains the signal strength of the current RFID portable terminal , combined with the signal strength records of the previous N times to form a trend curve, from which the slope feature of the curve is extracted; the newly obtained slope feature is compared with the slope feature pre-implanted in the RFID tag, thereby distinguishing the RFID Whether the tag and the RFID portable terminal are normally over-distance or the over-distance illusion caused by human body occlusion; for the normal over-distance situation, convert the signal strength into a distance value in time; otherwise, continue to monitor the real-time signal strength of the RFID bracelet, and follow the follow-...

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Abstract

The invention provides a portable anti-lost method based on active RFID. The method comprises: pairing an RFID tag and an RFID portable terminal to ensure that only paired devices can communicate with each other; binding the RFID tag to a protected object; enabling the RFID tag to detect the signal intensity of a signal sent by the RFID portable terminal in real time, to convert the signal intensity into a distance value, and to compare the distance value with a safe distance threshold set by the system; when the relative distance of the RFID portable terminal is greater than the safe distance threshold, enabling the RFID tag to send a signal to the RFID portable terminal to give an alarm signal; enabling the RFID tag to initiate an internal positioning module that records the current geographic location information of the RFID tag and sends the geographic location information to a monitoring service platform; and enabling the RFID tag to send the current location information at a fixed time frequency during the loss of the object. Compared with the prior art, the method may carry out anti-lost monitoring on secret-related objects during the out and escorting processes, can track the position when the objects are lost, assists retrieving, minimizes the occurrence of secret-related events and reduces the risk of secret leakage.

Description

technical field [0001] The invention relates to a portable anti-lost method based on active RFID technology, in particular to a portable anti-lost method based on active RFID technology, which is suitable for the field of anti-loss security of confidential articles. Background technique [0002] At present, in the field of confidentiality and security, many confidential objects, including: confidential CDs, confidential USB flash drives, confidential notebooks and documents, etc., lack effective anti-lost control during the process of going out, and there is a potential risk of loss. It poses a significant risk of leaking state secrets, so the anti-lost management of secret-related items is particularly important. However, in the relevant technical fields at present, anti-lost systems based on active RFID technology are not widespread, but mainly adopt bluetooth technology system or passive RFID technology. However, Bluetooth technology has the disadvantage of being easily ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B21/24H04W4/80H04W4/02H04W4/029G06K17/00
CPCG06K17/0022G08B21/24H04W4/02H04W4/80
Inventor 韩梅贝磊
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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