Locator-based locating method

Abstract

The invention provides a locator-based locating method. A locator comprises a central processing unit, a wireless unit, a global positioning system (GPS) locating unit, an inertial navigation unit, a mobile communication unit and a storage unit. The method comprises the following steps that a corresponding external monitoring end is searched based on a wireless detection signal; whether the current distance between the locator and the external monitoring end exceeds a first distance threshold value is determined based on the current wireless signal intensity and a mapping table stored in the storage unit; the inertial navigation unit is started when the current distance exceeds the first distance threshold value; whether the current distance exceeds a second distance threshold value is determined by detecting whether wireless connection can be established between the locator and the external monitoring end; and the mobile communication unit and the GPS locating unit are started when the current distance exceeds the second distance threshold value. By combining low power consumption Bluetooth, wireless fidelity (WIFI), a gyroscope and an accelerometer, the problem of power consumption due to the sustained use of a mobile network and GPS locating is solved.

Description

technical field [0001] The present invention generally relates to the field of positioning and tracking, and more specifically, relates to a method for positioning and tracking lost children, elderly people or lost valuables and a corresponding locator. Background technique [0002] With the continuous expansion of cities and the emergence of some criminals in the current society, how to prevent the elderly and children from getting lost or being kidnapped or trafficked has always been a social problem. In the prior art, a so-called safe mobile phone for children and the elderly is generally used, which uses GPS and mobile network to realize electronic fence and location tracking. However, this requires users to record various SMS instructions, such as Adobe’s security mobile phone series . Users either need to go to a special website to check the child's track, or need to send a text message to the child's mobile phone to obtain location information. [0003] Judging from...

AI Technical Summary

Problems solved by technology

[0003] Judging from the existing technology of current positioning tracking, there are mainly the following defects. First, the traditional positioning method needs to start mobile data network (such as 2G / 3G mobile data network) and GPS positioning system at the same time, so GPS positioning system And the mobile data network is working non-stop, which greatly increases the power consumption of the system. Under normal circumstances, the continuous navigation time of a 1000mAh mobile phone will not exceed 2 hours, which obviously cannot meet the requirements of long-term use.

Since the tracking may need to last for a long time and accumulate, it is difficult for the device to ensure that there is still enough power to work before the ward is found, so that long-term location tracking cannot be achieved when children or property are lost or lost for a long time; at the same time, The existing technology is usually based on mobile phones. Children’s self-sustainability is generally poor. Children’s mobile phones cannot avoid receiving spam messages or harassing calls from strangers, which will interfere with children’s learning, distract children’s attention, and may cause safety hazards

Moreover, the mobile phone is too conspicuous. Once a child is lost or other incidents, it is easy to be discarded by the suspect and lose its function, thus failing to achieve the purpose of continuous positioning and tracking. Finally, due to the weak penetrating power of the GPS signal, it cannot be used indoors, such as In crowded shopping malls or children's entertainment venues, it is impossible to accurately locate the child's location through GPS, and the positioning error of the base station is too large, and there is no height information, so it is impossible to locate the exact location of the child (such as on which floor)

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