Anti-lost object search method based on TOF wireless distance measurement

A search method and wireless ranging technology, applied in the search field of anti-lost items, can solve the problems of large error in estimated distance, error, short communication distance, etc., and achieve the effect of strong anti-interference ability, convenient control and calculation of information

Inactive Publication Date: 2014-04-30
柳明福
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Problems solved by technology

[0003] At present, there are two ways to avoid such troublesome things, one of which is to judge whether the item is within the corresponding range through the effective range of the signal sent by active RFID; another method is to use active RFID or Bluetooth RSSI The signal strength is used to estimate the range of the object being tracked. T

Method used

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Embodiment Construction

[0025] The present invention will be further described below by specific embodiment:

[0026] A search method for preventing lost items based on TOF wireless ranging of the present invention, the steps are as follows:

[0027] Step 1: First set up more than one anti-lost device sub-units that are bound to the items that need to be anti-lost. The mobile phone or tablet terminal carried is connected wirelessly through Bluetooth, and the main machine of the anti-lost device is responsible for calculating the distance between the sub-machine of the anti-lost device and the main machine of the anti-lost device, and transmits the distance information to the mobile phone or tablet terminal through Bluetooth for display and further processing information;

[0028] Step 2: Turn on the sub-machine of the anti-lost device that is bound to the anti-lost item, and the sub-machine of the anti-lost device will automatically send its own ID to the main machine of the anti-lost device;

[00...

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Abstract

An anti-lost object search method based on TOF wireless distance measurement comprises the steps that one or more anti-lost subunits bound with an anti-lost object are arranged, all the anti-lost subunits are connected with an anti-lost master unit in a wireless mode, the anti-lost master unit is in wireless connection with a mobile phone or a tablet personal computer carried with a user in a Bluetooth mode, and the anti-lost master unit is used for calculating the distance between the anti-lost master unit and the anti-lost subunits and transmitting the distance information to the mobile phone or the tablet personal computer in a Bluetooth mode so as to display or further process the distance information. The defects that as communication distance is short in the prior art, estimated distance information is prone to being affected by external factors and becomes invalid can be overcome.

Description

technical field [0001] The invention belongs to the technical field of searching in a wireless manner, and in particular relates to a searching method for preventing lost items based on TOF wireless ranging. Background technique [0002] In people's daily life, it is often encountered that items such as keys that need to be carried are forgotten somewhere, parents are careless when taking their children for a walk, and the children are lost, and the luggage placed on the luggage rack during business trips is careless. Troublesome things like being taken away. [0003] At present, there are two ways to avoid such troublesome things, one of which is to judge whether the item is within the corresponding range through the effective range of the signal sent by active RFID; another method is to use active RFID or Bluetooth RSSI The signal strength is used to estimate the range of the object being tracked. These two methods usually have the defect of short communication distance, ...

Claims

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Application Information

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IPC IPC(8): G08B21/24H04M11/04G01S5/12
Inventor 柳明福
Owner 柳明福
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