CN115811713A - UE equipment signal searching device and method based on unmanned aerial vehicle - Google Patents
UE equipment signal searching device and method based on unmanned aerial vehicle Download PDFInfo
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- CN115811713A CN115811713A CN202211549047.4A CN202211549047A CN115811713A CN 115811713 A CN115811713 A CN 115811713A CN 202211549047 A CN202211549047 A CN 202211549047A CN 115811713 A CN115811713 A CN 115811713A
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Abstract
The invention provides a UE equipment signal searching device based on an unmanned aerial vehicle, which comprises the unmanned aerial vehicle, unmanned aerial vehicle-mounted equipment and a ground station; the unmanned aerial vehicle is used for carrying the unmanned aerial vehicle-mounted equipment for searching; the unmanned airborne equipment comprises an active transmitting module and an uplink direction-finding module, wherein the active transmitting module is used for transmitting signals to interact with the UE equipment so as to acquire the signals of the UE equipment; the uplink direction finding module is used for measuring and calculating the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputting the position relation to the ground station; the ground station is used for acquiring the position relation and obtaining the position of the UE equipment according to the position relation, and the ground station is also used for controlling the unmanned aerial vehicle. The device has universal applicability and can realize accurate search and rescue.
Description
Technical Field
The invention relates to the technical field of life detection, in particular to a UE equipment signal searching device and method based on an unmanned aerial vehicle.
Background
At present, in the technical field of life detection, such as an infrared detection device, because the infrared penetration capability is very weak, the infrared detection device can only be applied to outdoor open scenes; as for the sound and light detection means, sound refers to sound waves, and the vibration of the sound waves is detected to implement detection by detecting the heartbeat of a human body or the knocking of trapped people, so that the limitation is that a quieter rescue environment is required and is often difficult to achieve in the actual process; for example, optical detection, commonly called snake eye probe, probes into the position of trapped people through gaps in the ruins, and the limitation is very obvious because not all the ruins have gaps and can directly probe into the vicinity of the trapped people; finally, there is an electromagnetic wave detection method, which uses a beam of electromagnetic waves to perform a visual imaging by reflected waves to see if there are trapped people under the beam and the distribution of trapped people, and this method will have an action range of only about 10 meters because the attenuation between the electromagnetic waves is very severe.
Based on the above disadvantages of the prior art, there is a need to provide a novel life detection apparatus and method, which not only have general applicability, but also can implement precise search and rescue.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the UE equipment signal searching device based on the unmanned aerial vehicle, which not only has universal applicability, but also can realize accurate searching and rescuing.
In order to achieve the above object and other related objects, the present invention provides a UE device signal searching apparatus based on an unmanned aerial vehicle, including an unmanned aerial vehicle, an unmanned aerial vehicle-mounted device, and a ground station;
the unmanned aerial vehicle is used for carrying the unmanned aerial vehicle-mounted equipment for searching;
the unmanned airborne equipment comprises an active transmitting module and an uplink direction finding module, wherein the active transmitting module is used for transmitting signals to interact with the UE equipment so as to acquire the signals of the UE equipment; the uplink direction finding module is used for measuring and calculating the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputting the position relation to the ground station;
the ground station is used for acquiring the position relation and obtaining the position of the UE equipment according to the position relation, and the ground station is also used for controlling the unmanned aerial vehicle.
Furthermore, the unmanned aerial vehicle-mounted device further comprises a combiner, the combiner is used for being connected with the active transmitting module and the uplink side direction module respectively, and signals sent by the active transmitting module and the uplink direction finding module are sent out through the combiner.
Further, the unmanned airborne equipment still includes directional antenna.
Further, the position relationship includes a distance between the drone and the UE device, a flight height of the drone, and directional angle information of the directional antenna.
Further, the ground station includes a GIS system, and the ground station is further configured to label the location information of the UE device to the GIS system.
Further, the UE device is a mobile phone.
Based on the same conception, the invention also provides a UE equipment signal searching method based on the unmanned aerial vehicle, which adopts any one of the UE equipment signal searching devices based on the unmanned aerial vehicle, and comprises the following steps:
an active transmitting module of the unmanned airborne equipment sends out a search signal, the type of the search signal is the same as that of a UE equipment base station, and the signal intensity of the search signal is greater than that of the UE equipment base station, so that the UE equipment is disconnected from the UE equipment base station and enters a cell reselection;
the active transmission module establishes RRC connection with the UE equipment, and acquires IMSI information and signal strength information of the UE equipment through an identity authentication request and UE equipment capability query;
the uplink direction finding module measures and calculates the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputs the position relation to the ground station;
and the ground station acquires the position relation and obtains the position of the UE equipment according to the position relation.
Further, the method also comprises the following steps: and acquiring the direction angle information of the unmanned aerial vehicle through a directional antenna.
Further, the position relationship includes a distance between the drone and the UE device, a flight height of the drone, and directional angle information of the directional antenna.
Further, the uplink direction finding module measures and calculates the position relationship between the UE device and the drone according to the signal strength of the UE device, and specifically includes:
determining the maximum measurement unit area s according to the flight height and the direction angle information;
dividing a region to be measured and calculated into equidistant grids according to the maximum measurement unit area s, planning a flight route, and marking the position information of each UE device in the equidistant grids, wherein the equidistant grids distinguish the number of trapped persons through different colors;
and automatically generating a two-dimensional code for each UE device, wherein the two-dimensional code comprises a trapped person identification code and geographical position information.
In summary, the UE device signal searching apparatus and method based on the unmanned aerial vehicle provided by the present invention obtain the accurate location information of the trapped person by using the detection method of the mobile phone signal, compared with the traditional sound/light/electricity detection method for the human body in the prior art, and have the characteristics of long detection distance, fast detection speed, wide detection depth, etc.; furthermore, the device and the method can also utilize the unmanned aerial vehicle to rapidly scan the disaster area at the initial stage of natural disaster occurrence, complete the arrangement of the distribution situation of the trapped people, and mark the approximate position of each trapped person, thereby playing a vital role in the rescue decision of the rescue command center, planning the rescue route more reasonably, distributing rescue force and rescue equipment, and the like, and greatly improving the rescue efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram of a UE device signal search apparatus based on an unmanned aerial vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an unmanned aerial vehicle-mounted device in a UE device signal search apparatus based on an unmanned aerial vehicle according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a UE device signal searching method based on an unmanned aerial vehicle according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating position measurement and calculation in a UE device signal search method based on an unmanned aerial vehicle according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a UE device signal search method based on an unmanned aerial vehicle according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a UE device signal searching method based on an drone according to an embodiment of the present invention;
Detailed Description
The UE device signal searching apparatus and method based on drone of the present invention will be described in detail with reference to fig. 1-4 and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a UE device signal search apparatus based on an unmanned aerial vehicle, including an unmanned aerial vehicle, an unmanned aerial vehicle-mounted device, and a ground station; the unmanned aerial vehicle is used for carrying the unmanned aerial vehicle-mounted equipment for searching; the unmanned airborne equipment comprises an active transmitting module and an uplink direction finding module, wherein the active transmitting module is used for transmitting signals to interact with the UE equipment so as to acquire the signals of the UE equipment; the uplink direction finding module is used for measuring and calculating the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputting the position relation to the ground station; the ground station is used for acquiring the position relation and obtaining the position of the UE equipment according to the position relation, and the ground station is also used for controlling the unmanned aerial vehicle.
In this embodiment, as shown in fig. 2, the unmanned airborne device mainly includes the active transmitting module, the uplink direction finding module, and the combiner, the unmanned airborne device employs a TAC different from a TD-LTE network of an operator, and the active transmitting module has a higher power, so that the strength of a signal transmitted by the unmanned airborne device is stronger than that of a base station of the UE device, and the UE device can perform large area reselection to attempt to establish connection with the active transmitting module. The UE equipment initiates position updating through cell reselection, after RRC establishment is completed, the active transmitting module side issues Identity Request to acquire UE Identity information, the UE equipment returns 'Identity response', wherein 4G user network information is carried, and therefore the active transmitting module acquires information such as IMSI of a user.
In this embodiment, the unmanned airborne equipment is equivalent to a micro base station, scans peripheral UE equipment information to capture, identifies different UE identities through IMSI, keeps trapped people to transmit signals with maximum uplink power, and realizes accurate positioning by measuring uplink signal strength through airborne equipment. The unmanned aerial vehicle-mounted equipment further comprises a combiner, the combiner is used for being connected with the active transmitting module and the uplink side direction module respectively, and signals sent by the active transmitting module and the uplink direction finding module are sent out through the combiner. The data path between the unmanned aerial vehicle-mounted equipment and the ground station and the data path of the unmanned aerial vehicle platform are integrated into a channel, namely, the combiner, the control signaling and the data acquisition are transmitted through the unmanned aerial vehicle. The ground station acquires position information and signal intensity information of different UE devices and then performs data analysis, and the ground station can further comprise a GIS system, marks the position of the UE device to the GIS system, and realizes display of distribution conditions and accurate positions of trapped people.
In this embodiment, the unmanned airborne device further comprises a directional antenna. The position relation includes unmanned aerial vehicle with distance between the UE equipment, unmanned aerial vehicle's flight height, and directional antenna's direction angle information. A Directional antenna (Directional antenna) is an antenna that emits and receives electromagnetic waves in one or more specific directions with a particularly strong intensity, and emits and receives electromagnetic waves in other directions with a null or minimum intensity. The directional transmitting antenna is adopted to increase the effective utilization rate of the radiation power and increase the confidentiality; the main purpose of using directional receiving antenna is to enhance signal strength and increase anti-interference ability.
Specifically, the UE device is taken as a mobile phone for explanation, as shown in fig. 3, if the mobile phone normally resides in a real base station and corresponds to a normal existing network environment, at this time, the mobile phone initiates common-frequency measurement, finds that a signal of the unmanned airborne device is stronger, where the unmanned airborne device is equivalent to a pseudo base station, ends a CONNECTION with the real base station, initiates cell reselection, and then enters a random access flow, the mobile phone sends an RRC CONNECTION REQUEST message RRC CONNECTION REQUEST through an uplink CCCH, REQUESTs to establish an RRC CONNECTION, because the area code of the unmanned airborne device is different from the existing network setting, when the mobile phone detects that the broadcast area code of the unmanned airborne device is inconsistent with the current area, the mobile phone initiates a location update REQUEST, the unmanned airborne device initiates an identity verification REQUEST, REQUESTs the mobile phone to report its IMSI, and the mobile phone replies to report its IMSI, so far obtains a unique identity label of the mobile phone, the unmanned airborne device continuously sends a mobile phone capability query to the UE, and when the mobile phone continuously reports its own capability, the unmanned airborne device measures a location strength value in combination with an uplink directional antenna. The International Mobile Subscriber Identity (IMSI, international Mobile Subscriber Identity) is an Identity that is used to distinguish different subscribers in a cellular network and is not repeated in all cellular networks, and is a unique identifier used to identify the Identity of a Subscriber. The unmanned airborne equipment is equivalent to a pseudo base station, is different from the service capability of a real base station, and is only used for grabbing, identifying and positioning a specific target.
Specifically, when the marked position is measured and calculated, the unmanned aerial vehicle device transmits the measured uplink level value of the UE device to the unmanned aerial vehicle in real time through the DJI Payload SDK, and the unmanned aerial vehicle transmits the count-up information and the first image transmission information to the ground station through a flight control channel. The ground station determines the maximum measurement unit area s according to the flight altitude and the direction angle information of the directional antenna, and as shown in fig. 4, it is assumed that the horizontal direction angle and the vertical direction angle of the directional antenna are both 60 °, the height of the unmanned airborne equipment from the ground is h, and the bottom of the unmanned airborne equipment is
The side length is x, then x can be obtained according to the Pythagorean theorem 2 +h 2 ＝(2x) 2 ,
S = (2 x) can be obtained from the rectangular area formula 2 Substituting x into the formula can yield
Based on the same conception, the invention also provides a UE equipment signal searching method based on the unmanned aerial vehicle, which adopts any one of the UE equipment signal searching devices based on the unmanned aerial vehicle, and comprises the following steps:
an active transmitting module of the unmanned airborne equipment sends out a search signal, the type of the search signal is the same as that of a UE equipment base station, and the signal intensity of the search signal is greater than that of the UE equipment base station, so that the UE equipment is disconnected from the UE equipment base station and enters a cell reselection;
the active transmission module establishes RRC connection with the UE equipment, and acquires IMSI information and signal strength information of the UE equipment through an identity authentication request and UE equipment capability query;
the uplink direction finding module measures and calculates the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputs the position relation to the ground station;
and the ground station acquires the position relation and obtains the position of the UE equipment according to the position relation.
In this embodiment, the method further includes: and acquiring the direction angle information of the unmanned aerial vehicle through a directional antenna. The position relationship includes the distance between the unmanned aerial vehicle and the UE device, the flight height of the unmanned aerial vehicle, and the direction angle information of the directional antenna.
In this embodiment, the uplink direction-finding module measures and calculates the position relationship between the UE device and the unmanned aerial vehicle according to the signal strength of the UE device, and specifically includes:
1) After the maximum measurement area s is determined, the area to be measured and calculated is divided into equidistant grids according to the size of the maximum measurement area s, a flight route is planned, as shown in fig. 5, the position information of each mobile phone is marked in the grids, the grids distinguish the number of trapped persons through different colors, the distribution situation of the persons and the positions on a map can be clearly seen, the target is positioned through continuously refining the grids, and the positioning accuracy is less than 1 meter.
2) The system can automatically generate a two-dimensional code for each UE, the two-dimensional code comprises the identity identification code of the trapped person and the geographical position information, the two-dimensional code can be used as a unique search and rescue voucher to be distributed to rescue workers, and regional management and fine search and rescue are implemented.
In addition, as shown in fig. 6, a topographic map of the field environment can be generated in real time by using an unmanned aerial vehicle, positions of the trapped people are scanned and marked on a specific building by combining a three-dimensional GIS, the positions of the trapped people can be accurately measured, the damaged condition of the building can be evaluated, the disaster situation can be comprehensively known in a short time, rescue resources can be reasonably distributed, and a rescue route can be planned.
Compared with the traditional sound/light/electricity detection mode for human bodies in the prior art, the UE equipment signal searching device and method based on the unmanned aerial vehicle have the advantages that the accurate position information of trapped people is obtained by using the detection mode of mobile phone signals, and the device and method have the characteristics of long detection distance, high detection speed, wide detection depth and the like; furthermore, the device and the method can also utilize the unmanned aerial vehicle to rapidly scan the disaster area at the initial stage of natural disaster occurrence, complete the arrangement of the distribution situation of the trapped people, and mark the approximate position of each trapped person, thereby playing a vital role in the rescue decision of the rescue command center, planning the rescue route more reasonably, distributing rescue force and rescue equipment, and the like, and greatly improving the rescue efficiency.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. A UE equipment signal searching device based on an unmanned aerial vehicle is characterized by comprising the unmanned aerial vehicle, unmanned aerial vehicle-mounted equipment and a ground station;
the unmanned aerial vehicle is used for carrying the unmanned aerial vehicle-mounted equipment for searching;
the unmanned airborne equipment comprises an active transmitting module and an uplink direction finding module, wherein the active transmitting module is used for transmitting signals to interact with the UE equipment so as to acquire the signals of the UE equipment; the uplink direction finding module is used for measuring and calculating the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputting the position relation to the ground station;
the ground station is used for acquiring the position relation and obtaining the position of the UE equipment according to the position relation, and the ground station is also used for controlling the unmanned aerial vehicle.
2. The UE device signal search apparatus based on UAV of claim 1, wherein the UAV further comprises a combiner, the combiner is configured to connect the active transmitting module and the uplink direction-finding module, and the signals from the active transmitting module and the uplink direction-finding module are both transmitted through the combiner.
3. The drone-based UE device signal searching apparatus of claim 1, wherein the drone onboard device further includes a directional antenna.
4. The drone-based UE device signal search apparatus of claim 3, wherein the positional relationship comprises a distance between the drone and the UE device, a flight altitude of the drone, and directional angle information of the directional antenna.
5. The drone-based UE device signal search apparatus of claim 1, wherein the ground station includes a GIS system, the ground station further configured to label location information of the UE device to the GIS system.
6. The drone-based UE device signal searching apparatus of any of claims 1-5, wherein the UE device is a cell phone.
7. A UE device signal search method based on drone, which uses the UE device signal search apparatus based on drone of any one of claims 1-3, characterized by comprising the following steps:
an active transmitting module of the unmanned airborne equipment sends out a search signal, the type of the search signal is the same as that of a UE equipment base station, and the signal intensity of the search signal is greater than that of the UE equipment base station, so that the UE equipment is disconnected from the UE equipment base station and enters a cell reselection;
the active transmission module establishes RRC connection with the UE equipment, and acquires IMSI information and signal strength information of the UE equipment through an identity authentication request and UE equipment capability query;
the uplink direction finding module measures and calculates the position relation between the UE equipment and the unmanned aerial vehicle according to the signal intensity of the UE equipment and outputs the position relation to the ground station;
and the ground station acquires the position relation and obtains the position of the UE equipment according to the position relation.
8. The drone-based UE device signal search method of claim 6, further comprising: and acquiring the direction angle information of the unmanned aerial vehicle through a directional antenna.
9. The drone-based UE device signal search method of claim 7, wherein the positional relationship includes a distance between the drone and the UE device, a flight altitude of the drone, and directional angle information of the directional antenna.
10. The UE device signal searching method based on the drone of claim 6, wherein the uplink direction finding module measures and calculates a position relationship between the UE device and the drone according to a signal strength of the UE device, and specifically includes:
determining the maximum measurement unit area s according to the flight height and the direction angle information;
dividing a region to be measured and calculated into equidistant grids according to the maximum measurement unit area s, planning a flight route, and marking the position information of each UE device in the equidistant grids, wherein the equidistant grids distinguish the number of trapped persons through different colors;
and automatically generating a two-dimensional code for each UE device, wherein the two-dimensional code comprises a trapped person identification code and geographical position information.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118018104A (en) * | 2024-04-09 | 2024-05-10 | 中科元境(江苏)文化科技有限公司 | Unmanned aerial vehicle-based data transmission method and system |
| CN118018104B (en) * | 2024-04-09 | 2024-07-05 | 中科元境(江苏)文化科技有限公司 | Unmanned aerial vehicle-based data transmission method and system |
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- 2022-12-05 CN CN202211549047.4A patent/CN115811713A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118018104A (en) * | 2024-04-09 | 2024-05-10 | 中科元境(江苏)文化科技有限公司 | Unmanned aerial vehicle-based data transmission method and system |
| CN118018104B (en) * | 2024-04-09 | 2024-07-05 | 中科元境(江苏)文化科技有限公司 | Unmanned aerial vehicle-based data transmission method and system |
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