Mobile communication device and search-and-rescue system thereof

Abstract

This invention provides a mobile communication device and its search and rescue system. The mobile communication device has a rescue application that can enter energy-saving operation and send rescue signals containing location information at predetermined intervals upon triggering a disaster prevention alarm or manual activation by the user. Multiple unmanned vehicles (UAVs) are equipped with signal receiving modules, network modules, and edge computing modules to receive rescue signals, obtain location information, and perform preliminary location estimation. A multi-node wireless network can be formed among the UAVs, generating multi-point positioning information. The rescue platform integrates the positioning data from the UAVs, uses positioning algorithms to calculate and generate rescue positioning information to assist in determining the location of the mobile communication device. Furthermore, the UAVs can form a search convoy and are equipped with a power transmission module to remotely replenish the mobile communication device's power, enabling it to restart the rescue application and continue sending rescue signals, thereby improving disaster search and rescue efficiency.

Claims

1. A mobile communication device, the mobile communication device having a rescue application, the mobile communication device receiving a disaster prevention alarm broadcast message or the rescue application being manually activated by a user, the rescue application controlling the mobile communication device to retain the necessary operating programs of the mobile communication device and the rescue application, the rescue application sending a rescue signal containing at least one location information at a predetermined period, the rescue signal being received by an unmanned vehicle in the outside world, and the mobile communication device receiving microwave or radio frequency energy emitted by the unmanned vehicle for wireless recharging.

2. A search and rescue system, comprising: A mobile communication device is equipped with a rescue application. The mobile communication device receives a disaster prevention alarm broadcast message or the rescue application is manually activated by the user to control the mobile communication device to retain its necessary operating procedures and the rescue application. The rescue application sends a rescue signal containing at least one location information at a predetermined period. A plurality of unmanned vehicles, each including: a signal receiving module that continuously receives the rescue signal emitted by the mobile communication device when the rescue application is activated; a network module connected to the signal receiving module and receiving the rescue signal to obtain the location information of the mobile communication device from the rescue signal and transmit the location information to a rescue platform; and a power transmission module that emits microwave or radio frequency energy to wirelessly charge the mobile communication device.

3. The search and rescue system as described in claim 2, wherein a multi-node wireless network is formed among the plurality of unmanned vehicles, and the plurality of unmanned vehicles establish multi-point positioning information from the multi-node wireless network.

4. The search and rescue system as described in claim 3, wherein the network module transmits each of the multi-point location information to the rescue platform, and the rescue platform generates rescue location information based on the multi-point location information and the location information.

5. The search and rescue system as described in claim 2, wherein the plurality of unmanned vehicles further includes an edge computing module connected to the signal receiving module, and when receiving the rescue signal, the edge computing module estimates the current position of the mobile communication device based on the current flight position of the plurality of unmanned vehicles to generate estimated position information, and transmits each estimated position information back to the rescue platform.

6. The search and rescue system as described in claim 5, wherein the edge computing module generates the estimated location information by measuring the signal strength of the rescue signal or calculating the time difference of arrival.

7. The search and rescue system as described in claim 5, wherein the network module transmits each of the estimated location information and the location information to the rescue platform, and the rescue platform generates rescue positioning information based on the estimated location information and the location information.

8. The search and rescue system as described in claim 7, wherein the rescue platform includes a positioning calculation module that receives each of the estimated location information and the location information, and calculates the rescue positioning information of the mobile communication device using one or both of a multi-point measurement algorithm and a triangulation algorithm based on each of the estimated location information and the location information.

9. The search and rescue system as described in claim 2, wherein, after the rescue application is started, the predetermined period sends out the rescue signal X times at intervals of at least M seconds every N minutes, where N, M and X are positive integers.

10. The search and rescue system as described in claim 2, wherein when the mobile communication device is restored to an operational state after its power is depleted by the power transmission module, the mobile communication device restarts the rescue application.

11. The search and rescue system as described in claim 2, wherein the plurality of unmanned vehicles further includes a signal transmitting module that transmits a detection signal to the outside world, and the rescue application of the mobile communication device receives the detection signal and then activates the rescue application to send out the rescue signal.

12. The search and rescue system as described in claim 2, wherein the power transmission module performs long-distance wireless power transmission using microwave energy in the 5.8 GHz band.

13. The search and rescue system as described in claim 2, wherein the plurality of unmanned vehicles includes a flight control module that controls the plurality of unmanned vehicles to conduct area search and rescue in a predetermined formation or path based on search mission planning data transmitted by the rescue platform.

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