CN111398952A - Distributed radar life detection positioning equipment - Google Patents
Distributed radar life detection positioning equipment Download PDFInfo
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- CN111398952A CN111398952A CN202010349058.2A CN202010349058A CN111398952A CN 111398952 A CN111398952 A CN 111398952A CN 202010349058 A CN202010349058 A CN 202010349058A CN 111398952 A CN111398952 A CN 111398952A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a distributed radar life detection positioning device, which comprises: the life detection module comprises more than two radar units to form a network, and each radar unit comprises a transmitting unit and a receiving unit and can work independently; and the GPS positioning time service module is used for receiving GPS communication, positioning the position of each radar unit in real time, and using the GPS signal as a time sequence trigger signal of each radar unit to realize time sequence synchronization of each radar unit. And the WIFI signal transmission module is used for performing wireless transmission of radar detection data and issuing a control instruction. The invention has the advantages of simple structure, convenient operation, larger coverage, wider detection range and the like.
Description
Technical Field
The invention mainly relates to the technical field of life detection and rescue equipment, in particular to distributed radar life detection positioning equipment.
Background
People can be buried under ruins after natural disasters such as earthquake collapse, landslide, debris flow and the like occur, the burying pressure is deep, and the burying position of a human body cannot be confirmed through human eyes. Therefore, people buried in the disaster area must be accurately positioned by various detection and positioning devices, and then corresponding rescue is implemented.
The radar life detection positioning device is limited by detection media and disaster conditions, has the advantages of strong penetrability and small close-range blind area in various detection devices, and is suitable for carrying out penetrability and non-contact personnel search and positioning after earthquake collapse, landslide and debris flow disasters.
The existing radar life detection is equipped with a pitch-catch, pitch-catch and multiple-transmission and multiple-reception system, but all the transmission and reception of the equipment are packaged together, so that the equipment can still be used as centralized radar life detection equipment. However, the radar life detection equipment adopting the mode has the following defects:
1. the detection range is limited; after natural disasters such as earthquake collapse, landslide, debris flow and the like occur, the general disaster area is large, the existing centralized radar life detection positioning equipment can only cover a small conical detection area, and the detection range is small. When a large-sector disaster area is detected, a single radar life detection positioning device can only repeatedly move and detect in a small range, the time consumption is long, the efficiency is low, the precious best rescue opportunity is missed, and the actual demand of emergency quick rescue is difficult to meet.
2. Multi-target resolution is poor; the current mainstream radar life detection positioning equipment is a one-transmitting-one-receiving or one-transmitting-multiple-receiving system, can only detect on one dimension and two dimensions, and does not have a three-dimensional positioning function. In addition, because the radar life detection positioning equipment under the centralized architecture is required by equipment portability, the overall design is small and exquisite, so that the antenna baseline is too short, and the two-dimensional angular resolution is poor. By combining the reasons, when the existing radar is used for detection, when a plurality of targets exist in a detection scene, the number of the targets is difficult to accurately distinguish. Such inaccurate detection information of the target amount may result in accidental injury or omission of buried personnel during rescue.
3. Single polarization results in detection false positives; after natural disasters such as earthquake collapse, landslide, debris flow take place, the buried pressure environment is complicated, and stranded personnel gesture is different, and the antenna position of current radar life detection location equipment is mostly horizontal polarization or vertical polarization, and only when treating to survey the target and antenna position basic parallel, the probability that detects the target is just the biggest, can appear under other states and miss the newspaper the condition.
In conclusion, although the existing radar life detection positioning equipment has natural advantages for penetrability and non-contact life detection, the existing equipment still has a plurality of problems to be solved, so that the emergency detection after disasters is greatly limited, and the equipment is particularly used for detection after natural disasters such as earthquake collapse, landslide and debris flow.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the distributed radar life detection positioning equipment which is simple in structure, convenient to operate, larger in coverage range and wider in detection range.
In order to solve the technical problems, the invention adopts the following technical scheme:
a distributed radar life detection positioning apparatus, comprising:
the life detection module comprises more than two radar units to form a network, and each radar unit comprises a transmitting unit and a receiving unit and can work independently;
the GPS positioning time service module is used for receiving GPS communication, positioning the position of each radar unit in real time, and using a GPS signal as a time sequence trigger signal of each radar unit to realize time sequence synchronization of each radar unit;
and the WIFI signal transmission module is used for performing wireless transmission of radar detection data and issuing a control instruction.
As a further improvement of the invention: the GPS positioning time service module is used for carrying out time service on each radar unit.
As a further improvement of the invention: the GPS positioning time service module is connected with the master control trigger signal of each radar unit, so that the time reference is unified.
As a further improvement of the invention: and determining the position of each independent radar unit through the GPS positioning time service module, establishing a reference coordinate system, detecting trapped persons by each independent radar unit, and performing primary processing on data to obtain the coordinate position in the reference coordinate system.
As a further improvement of the invention: the WIFI signal transmission module sends the position information additional timestamp in the reference coordinate system to the radar life detection module through the TCP for data fusion to obtain a final position coordinate; and the radar life detection module sends the final coordinate information with the timestamp to the user terminal through the TCP.
As a further improvement of the invention: and the more than two radar units realize three-dimensional positioning through area array arrangement.
Compared with the prior art, the invention has the advantages that:
the distributed radar life detection positioning equipment has a simple structure, is convenient to operate, can realize networking, has a larger coverage area of the whole radar equipment, can detect a large area at the same time, and is suitable for quickly searching and positioning in a large disaster area. In a wireless mode, detection under different polarization directions can be realized by freely placing a plurality of radar units.
Drawings
Fig. 1 is a schematic diagram of the principle of the present invention in a specific embodiment.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic workflow diagram of the present invention in an embodiment.
Illustration of the drawings:
1. a life detection module; 101. a radar unit; 2. a GPS positioning time service module; 3. WIFI signal transmission module.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1 and 2, the distributed radar life detection positioning equipment of the invention comprises:
the life detection module 1 comprises more than two radar units 101 to form a network, and each radar unit 101 is internally provided with a transmitting unit and a receiving unit and can work independently;
the GPS positioning time service module 2 is used for receiving GPS communication, positioning the position of each radar unit 101 in real time and providing coordinate information for processing and resolving echo signals by rear-end signals; meanwhile, the GPS signal may be used as a timing trigger signal of each radar unit 101, thereby realizing timing synchronization of each radar unit 101;
and the WIFI signal transmission module 3 is used for performing wireless transmission of radar detection data and issuing a control instruction.
Each radar unit 101 in the networking can transmit and receive electromagnetic signals, and can independently detect the target position; meanwhile, the target position calculated under the large base line is more accurate due to data fusion processing of the radar units 101.
The key point of information fusion of each radar unit 101 lies in unifying time reference, so that high-precision time reference synchronization is realized, and unifying the transmitting time and the receiving time of each independent radar unit 101 is a precondition for forming a wireless distributed architecture. At present, there are two schemes of time service of a GPS (global positioning system) and high-stability reference frequency source (atomic clock), and in consideration of the problem of equipment cost, the invention adopts a GPS positioning time service module 2 to synchronize the time reference of each radar unit 101.
Therefore, the radar life detection positioning equipment for distributed detection in the invention combines the radar units 101 which can work independently in a wireless mode to carry out detection positioning. Because each radar unit 101 in the group network can transmit and receive electromagnetic signals, the target position can be independently detected, and meanwhile, the target position calculated under the large base line is more accurate due to the fusion processing of each unit data. Namely: the GPS positioning time service module 2 is adopted to service time for each radar unit 101 (life detection module), and the GPS positioning time service module 2 is required to be connected with a main control trigger signal of each radar unit 101, so that unified time reference is achieved. Meanwhile, the position of each radar unit 101 is accurately positioned through the GPS positioning and time service module 2, and a positioning basis is provided for subsequent distributed cooperative detection.
The general signal transmission method in the wireless distributed architecture includes: wireless Wi-Fi, microwave communication, and satellite communication. Because the transmission range between each independent radar unit 101 is relatively close, the WIFI signal transmission module 3 is adopted for data communication in consideration of factors such as stability, high speed, confidentiality, mobility and cost, and a set of communication system with high transmission rate, high stability and high safety is established.
Referring to fig. 3, during operation, a user terminal issues an initialization command to initialize each radar unit 101 in the radar life detection module and synchronize time reference; then, the position of each independent radar unit 101 is determined through the GPS positioning time service module 2, a reference coordinate system is established, each independent radar unit 101 (sub-radar) detects trapped persons, and data is preliminarily processed to obtain the coordinate position in the reference coordinate system; and then sending the position information additional timestamp to a radar life detection module through a TCP for data fusion to obtain a final position coordinate. And finally, the radar life detection module sends the final coordinate information additional timestamp to the user terminal through the TCP, and performs visual processing on the data and transmits the data to a user interface for display.
According to the invention, multiple radar units 101 are adopted for networking, when a target is detected, each radar unit 101 can transmit and receive electromagnetic signals, each radar unit 101 can detect and locate the target, but after multiple distributed networking, detection information of each unit can be mutually referred and verified to serve as redundant detection; when the radar unit 101 is in distributed operation, the radar unit has a longer detection baseline than a centralized radar, so that the resolution of the whole device is higher.
After networking, the whole radar equipment can cover a larger range, can detect a large area at the same time, and is suitable for quickly searching and positioning in a large disaster area. In wireless mode, the free placement of multiple radar units 101 may enable detection in different polarization directions.
In the invention, each independent radar unit can transmit and receive ultra-wideband pulse signals and extract the position information of a to-be-detected living body on the echo of the radar unit 101, and each independent radar unit 101 determines the position of the to-be-detected living body after data fusion is carried out through a WIFI component or a data transmission line, wherein the three-dimensional positioning is carried out through area array arrangement in a wireless distributed architecture. The invention is applied to emergency rescue after natural disasters such as earthquake collapse, debris flow, landslide and the like, solves the difficult problem of detection of buried personnel, effectively improves the rescue efficiency of natural disasters of fire fighting teams and ensures the life safety of people.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (6)
1. A distributed radar life detection positioning apparatus, comprising:
the life detection module (1) comprises more than two radar units (101) to form a network, and each radar unit (101) comprises a transmitting unit and a receiving unit and can work independently;
the GPS positioning time service module (2) is used for receiving GPS communication, positioning the position of each radar unit (101) in real time, and using a GPS signal as a time sequence trigger signal of each radar unit (101) to realize time sequence synchronization of each radar unit (101);
and the WIFI signal transmission module (3) is used for performing radar detection data wireless transmission and issuing a control instruction.
2. The distributed radar life detection and positioning equipment as recited in claim 1, wherein the GPS positioning time service module (2) is used for time service of each radar unit (101).
3. The distributed radar life detection and positioning equipment as recited in claim 2, wherein the GPS positioning time service module (2) is connected with a master control trigger signal of each radar unit (101) to achieve time reference unification.
4. The distributed radar life detection and positioning equipment according to claim 2 or 3, wherein the GPS positioning time service module (2) is used for determining the position of each independent radar unit (101), a reference coordinate system is established, each independent radar unit (101) is used for detecting trapped people, and the data is subjected to preliminary processing to obtain the coordinate position in the reference coordinate system.
5. The distributed radar life detection positioning equipment as claimed in claim 4, wherein the WIFI signal transmission module (3) sends the position information additional timestamp in the reference coordinate system to the radar life detection module through TCP for data fusion to obtain a final position coordinate; and the radar life detection module sends the final coordinate information with the timestamp to the user terminal through the TCP.
6. The distributed radar life detection and localization arrangement according to claim 1, 2, 3 or 5, wherein the two or more radar units (101) achieve three-dimensional localization through area array arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349058.2A CN111398952A (en) | 2020-04-28 | 2020-04-28 | Distributed radar life detection positioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349058.2A CN111398952A (en) | 2020-04-28 | 2020-04-28 | Distributed radar life detection positioning equipment |
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| Publication Number | Publication Date |
|---|---|
| CN111398952A true CN111398952A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010349058.2A Pending CN111398952A (en) | 2020-04-28 | 2020-04-28 | Distributed radar life detection positioning equipment |
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|---|---|
| CN (1) | CN111398952A (en) |
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2020
- 2020-04-28 CN CN202010349058.2A patent/CN111398952A/en active Pending
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