A Bluetooth anti-lost detection and navigation method and system based on micro-environment perception

Abstract

The invention discloses an anti-lost detection and navigation method and system based on micro-environmental perception through Bluetooth. The system comprises a mobile phone which supports Bluetooth 4.0 and is not limited in operating system as well as an anti-lost device based on SensorTag. All that is required is to use the mobile phone and the SensorTag, install an App and set little configuration, whether an article is lost can be determined through communication between the mobile phone and the anti-lost device, an anti-lost strategy is formulated through micro-environmental perception performed by a sensor of the anti-lost device, an accelerometer, a compass, a gyroscope and other equipment on the mobile phone side are used to trace tracks of a user, and accordingly, the lost article is found in a reverse process. The whole process is automatically finished and the user does not need to participate intentionally, and no behavior of the user is interfered. The whole process is quick and effective, and the user does not need to worry. According to the method, different schemes are adopted in different situations, the equipment cost is reduced, unnecessary noise is avoided, the situation that other people take the article away after hearing an alarm is avoided, the searching difficulty is greatly reduced, and the accuracy is increased.

Description

technical field [0001] The invention belongs to the field of indoor navigation and wearable devices, in particular to a Bluetooth anti-lost detection and navigation method and system based on micro-environment perception. Background technique [0002] At present, there are many finished anti-lost devices based on Bluetooth, and they all basically have the same principle and function. More typical, more fully functional. For example, the Bluetooth 4.0Keep anti-lost device produced by Foxkn Company is small in size and can be hung on other items such as keys. KeepApp is installed on the mobile phone. When the distance between the Keep device and the mobile phone exceeds a preset value, both the mobile phone and the Keep terminal will alarm. , such as ringing the bell and flashing the LED light. The maximum distance that can be set is 30-50 meters. At the same time, the GPS of the mobile phone will record the location of the alarm and display it on the mobile phone map. Mor...

AI Technical Summary

Problems solved by technology

[0003] However, this product has major limitations. For example, in relatively noisy and complicated places, it is difficult for users to hear the beep of the device and cannot see the flickering of the LED light. It needs to be within a maximum radius of 30-50 meters. Searching is time-consuming and labor-intensive

And sometimes the user does not want the anti-lost device to alarm, such as in a quiet place such as an office, a library, etc., a louder sound will disturb other people's work and study, causing unnecessary troubles; and, if the lost is a valuable , the alarm of the anti-lost device may attract the attention of other passers-by, and it may cause loss of items

On the other hand, GPS can only provide a relatively large range outdoors, but cannot achieve precise positioning indoors.

As an auxiliary camera and microphone, it is not only difficult to achieve the desired positioning effect, but also has concerns about infringing on the privacy of others.

Keep sells for more than 250 yuan, which is expensive

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