CN116482723A - Multipurpose beacon module - Google Patents
Multipurpose beacon module Download PDFInfo
- Publication number
- CN116482723A CN116482723A CN202310747784.3A CN202310747784A CN116482723A CN 116482723 A CN116482723 A CN 116482723A CN 202310747784 A CN202310747784 A CN 202310747784A CN 116482723 A CN116482723 A CN 116482723A
- Authority
- CN
- China
- Prior art keywords
- module
- radio station
- beacon
- power supply
- power conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006243 chemical reaction Methods 0.000 claims description 44
- 238000001914 filtration Methods 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/33—Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/421—Determining position by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system
- G01S19/425—Determining position by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system by combining or switching between signals derived from different satellite radio beacon positioning systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
- H04W4/185—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals by embedding added-value information into content, e.g. geo-tagging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a multipurpose beacon module, which relates to the technical field of navigation satellite positioning and comprises a wireless connected detecting host and a positioning beacon; the positioning beacon comprises a beacon power supply module, a satellite receiving antenna, a satellite receiving module, a first radio station module and a radio station transmitting antenna, wherein the satellite receiving antenna, the satellite receiving module, the first radio station module and the radio station transmitting antenna are sequentially connected, and the beacon power supply module is respectively connected with the satellite receiving module and the first radio station module; the detecting host comprises a host power supply module, a radio station receiving antenna, a second radio station module, a main control center and an external network, wherein the radio station receiving antenna, the second radio station module, the main control center and the external network are sequentially connected, and the host power supply module is respectively connected with the second radio station module and the main control center. The multi-purpose beacon module has higher positioning precision, can receive more satellites, improves positioning stability and has longer communication distance.
Description
Technical Field
The invention relates to the technical field of navigation satellite positioning, in particular to a multipurpose beacon module.
Background
Location services or location information are required for many applications, based on which the degree of intelligibility of these applications can be effectively improved.
At present, when the existing satellite beacon module returns positioning information, the positioning information is dependent on a 4G network, and the positioning information needs to be returned to a cloud end in a region with the 4G network and then is sent to mobile phones and other devices for checking, so that the situation that the positioning information cannot be returned in a region with high delay and poor signals in remote mountain areas and the like is caused, the general positioning accuracy of a supported navigation satellite system is about 3 to 5 meters, and even the situation that the positioning accuracy is poor can occur; meanwhile, a lost signal can appear in a motion state, so that position information is wrong.
Therefore, how to improve the positioning accuracy of the beacon module in different areas under different motion states is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a multipurpose beacon module.
In order to achieve the above object, the present invention provides the following technical solutions:
a multi-purpose beacon module comprises a wireless connected detecting host and a positioning beacon;
the positioning beacon comprises a beacon power supply module, a satellite receiving antenna, a satellite receiving module, a first radio station module and a radio station transmitting antenna, wherein the satellite receiving antenna, the satellite receiving module, the first radio station module and the radio station transmitting antenna are sequentially connected, and the beacon power supply module is respectively connected with the satellite receiving module and the first radio station module;
the detecting host comprises a host power supply module, a radio station receiving antenna, a second radio station module, a main control center and an external network, wherein the radio station receiving antenna, the second radio station module, the main control center and the external network are sequentially connected, and the host power supply module is respectively connected with the second radio station module and the main control center.
Optionally, one detecting host is provided, and the positioning beacons are provided in a plurality.
Optionally, the beacon power supply module includes power supply battery, first power conversion circuit, power supply battery's output is connected with first power conversion circuit's input, first power conversion circuit's output is connected with satellite receiving module, first radio station module respectively.
Optionally, the host power supply module includes a second power conversion circuit connected with an external power supply, an output end of the external power supply is connected with the second power conversion circuit, and an output end of the second power conversion circuit is connected with the second radio station module and the master control center respectively.
Optionally, the first power conversion circuit and the second power conversion circuit have the same structure;
the first power supply conversion circuit comprises a first filtering unit, a first power supply conversion unit and a second filtering unit which are sequentially connected;
the second power conversion circuit comprises a third filtering unit, a second power conversion unit and a fourth filtering unit which are sequentially connected.
Optionally, the first filtering unit, the second filtering unit, the third filtering unit and the fourth filtering unit have the same structure and each comprises a 10uf capacitor and a 0.1uf capacitor which are connected in parallel;
the first power conversion unit and the second power conversion unit both adopt AM1117-3.3 power conversion chips.
According to the technical scheme, the invention provides the multipurpose beacon module, which has the following beneficial effects compared with the prior art:
(1) The multi-purpose beacon module of the invention uses the satellite receiving module to process satellite signals for positioning, and automatically sends the signals to the radio station module after analyzing the current longitude and latitude, altitude and movement speed, thus the positioning accuracy can reach about 2 meters.
(2) In the multipurpose beacon module, the satellite receiving module is a multi-band GNSS receiver with nanosecond time service precision, and has the function of receiving GPS, beidou and GLONASS satellite navigation signals, so that the technical scheme of the invention supports simultaneous positioning of three-system six-band satellite signals such as GPS L1, GPS L2, beidou B1, beidou B2, GLONASS L1 and GLONASS L2, and the number of received satellites is more, and the positioning stability is greatly improved.
(3) The multi-purpose beacon module communicates through the radio station, is not influenced by the quality of 4G signals, is matched with a ground-end high-gain radio station receiving antenna, and the radio station receiving antenna is a high-gain antenna, so that the communication distance reaches 5 km, and can realize a longer communication distance by increasing the transmitting power or using a larger-gain radio station receiving and transmitting antenna; the altitude can be returned.
(4) The position information feedback speed in the multipurpose beacon module can be configured through radio station module debugging software, and the configuration range is 0.2-infinity seconds each time.
(5) In the invention, a single detecting host can use a plurality of positioning beacons at the same time, so that the plurality of positioning beacons can be conveniently configured on different targets.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a multipurpose beacon module according to the present invention;
FIG. 2 (a) is a top view of the exterior structure of the positioning beacon of the present invention;
FIG. 2 (b) is a right side view of the external structure of the positioning beacon of the present invention;
FIG. 2 (c) is a left side view of the external structure of the positioning beacon of the present invention;
FIG. 3 is a schematic diagram of the external structure of the detecting host according to the present invention;
wherein, 1 represents satellite receiving antenna, 2 represents radio station transmitting antenna, 3 represents battery charging interface, 4 represents power indicator, 5 represents switch, 6 represents network interface, 7 represents radio station antenna interface, 8 represents power interface, and 9 represents radio station receiving antenna.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a multipurpose beacon module, which is shown in fig. 1, and comprises a detection host and a plurality of positioning beacons, wherein the detection host and the positioning beacons are in wireless connection.
The positioning beacon comprises a beacon power supply module, a satellite receiving antenna 1, a satellite receiving module, a first radio station module, a radio station transmitting antenna 2 and a beacon metal shell, wherein the satellite receiving antenna 1, the satellite receiving module, the first radio station module and the radio station transmitting antenna 2 are sequentially connected, and the beacon power supply module is respectively connected with the satellite receiving module and the first radio station module. Referring to fig. 2 (a), 2 (b) and 2 (c), the satellite receiving antenna 1 and the radio transmitting antenna 2 are arranged on a beacon metal shell, the satellite receiving module, the first radio module and the beacon power supply module are arranged in the beacon metal shell, a battery charging interface 3 is further arranged on the beacon metal shell and used for charging the beacon power supply module, and a power indicator 4 and a power switch 5 are further arranged.
The satellite receiving antenna 1 receives navigation satellite positioning signals and is arranged on a radio frequency connector of a beacon metal shell.
The satellite receiving module adopts a chip with the model of ublox ZED-F9T and is used for processing satellite signals received by the satellite receiving antenna 1 to position, analyzing the current longitude and latitude, altitude and movement speed and then automatically sending the processed signals to the radio station module.
The radio station module adopts a chip with the model of HX-DU10188D and is used for encrypting the position information sent by the satellite receiving module and sending the position information out through the radio station transmitting antenna 2.
The radio station transmitting antenna 2 is used for transmitting signals provided by a radio station module, and is arranged on a radio frequency connector of the beacon metal shell.
The beacon power supply module comprises a power supply battery and a first power supply conversion circuit, wherein the output end of the power supply battery is connected with the input end of the first power supply conversion circuit, and the output end of the first power supply conversion circuit is respectively connected with the satellite receiving module and the first radio station module and is used for processing 5V voltage output by the power supply battery into 3.3V for the satellite receiving module and the first radio station module. The first power supply conversion circuit comprises a first filtering unit, a first power supply conversion unit and a second filtering unit which are sequentially connected; the first filtering unit and the second filtering unit have the same structure and both comprise a 10uf capacitor and a 0.1uf capacitor which are connected in parallel; the first power conversion unit adopts an AM1117-3.3 power conversion chip.
The detecting host comprises a host power supply module, a radio station receiving antenna 9, a second radio station module, a main control center, an external network and a host metal shell, wherein the radio station receiving antenna 9, the second radio station module, the main control center and the external network are sequentially connected, and the host power supply module is respectively connected with the second radio station module and the main control center. The station receiving antenna 9 receives signals transmitted from the outside. Referring to fig. 3, the host metal casing is provided with a network interface 6, a radio antenna interface 7 and a power interface 8, wherein the network interface 6 is used for being connected with an external network, the radio wire interface is used for being connected with a radio receiving antenna 9, and the power interface 8 is used for being connected with a host power supply module; the second radio station module and the master control center are arranged in the host metal shell.
The radio station receiving antenna 9 is used for receiving signals sent by the outside and is connected to the radio station antenna interface 7 of the detecting host through a radio frequency cable.
The second radio station module adopts a chip with the model of HX-DU10188D and is used for decrypting the signals received by the radio station receiving antenna 9 and forwarding the signals to the master control center.
The master control center processes information sent by the second radio station module by adopting a chip with the model of GD32F450VGT6, and sends the information to an external network for other equipment through the RJ45 network interface 6. The main control center is provided with an RJ45 network interface 6 which is directly connected with the detection host panel.
The host power supply module comprises a second power supply conversion circuit connected with an external power supply, the output end of the external power supply is connected with the second power supply conversion circuit, and the output end of the second power supply conversion circuit is respectively connected with the second radio station module and the main control center and is used for processing the 5V direct current input by the power interface 8 into 3.3V direct current for the main control center and the second radio station module. The second power conversion circuit comprises a third filtering unit, a second power conversion unit and a fourth filtering unit which are sequentially connected. The third filtering unit and the fourth filtering unit have the same structure and both comprise a 10uf capacitor and a 0.1uf capacitor which are connected in parallel; the second power conversion unit adopts an AM1117-3.3 power conversion chip.
In a specific use scenario, the beacon module may be mounted to the device under test for real-time positioning, position tracking, speed detection. Beacon modules may be equipped to my staff/devices in a multi-device system for use as a friend or foe identification. For example, beacon modules are uniformly equipped on the personnel/equipment, and the beacon modules report the position information of the personnel to the host in real time. When the detection equipment on the part discovers personnel/equipment with unknown identity in the detection range, the personnel/equipment position information is reported to the host end for comparison, and if the host end does not have a beacon module matched with the position information, the host end can judge that the equipment is an enemy and carry out treatment.
The working flow of the multipurpose beacon module of the invention is as follows: the positioning beacon receives the navigation satellite signal to complete positioning, and the first radio station module encrypts the position information and then sends out the radio station transmitting antenna 2 at a speed of 5 times per second to 5 times per second. After the radio station receiving antenna 9 of the detecting host receives the signal, the second radio station module decrypts and forwards the signal to the main control center, and the main control center processes the signal and then sends the position information to other equipment for use through the RJ45 network interface 6.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a multipurpose beacon module which is characterized by comprising a wireless connected detecting host and a positioning beacon;
the positioning beacon comprises a beacon power supply module, a satellite receiving antenna (1), a satellite receiving module, a first radio station module and a radio station transmitting antenna (2), wherein the satellite receiving antenna (1), the satellite receiving module, the first radio station module and the radio station transmitting antenna (2) are sequentially connected, and the beacon power supply module is respectively connected with the satellite receiving module and the first radio station module;
the detecting host comprises a host power supply module, a radio station receiving antenna (9), a second radio station module, a main control center and an external network, wherein the radio station receiving antenna (9), the second radio station module, the main control center and the external network are sequentially connected, and the host power supply module is respectively connected with the second radio station module and the main control center.
2. The multipurpose beacon module of claim 1, wherein the detecting host is provided with one and the positioning beacons are provided with a plurality of positioning beacons.
3. The multipurpose beacon module of claim 1, wherein the beacon power module includes a power battery and a first power conversion circuit, an output end of the power battery is connected to an input end of the first power conversion circuit, and an output end of the first power conversion circuit is connected to the satellite receiving module and the first radio station module, respectively.
4. A multipurpose beacon module according to claim 3, wherein the host power module includes a second power conversion circuit connected to an external power source, an output end of the external power source is connected to the second power conversion circuit, and an output end of the second power conversion circuit is connected to the second station module and the master control center, respectively.
5. The multipurpose beacon module of claim 4, wherein the first power conversion circuit and the second power conversion circuit are identical in structure;
the first power supply conversion circuit comprises a first filtering unit, a first power supply conversion unit and a second filtering unit which are sequentially connected;
the second power conversion circuit comprises a third filtering unit, a second power conversion unit and a fourth filtering unit which are sequentially connected.
6. The multipurpose beacon module of claim 5, wherein the first filter unit, the second filter unit, the third filter unit, and the fourth filter unit are identical in structure and each comprise a 10uf capacitor and a 0.1uf capacitor connected in parallel;
the first power conversion unit and the second power conversion unit both adopt AM1117-3.3 power conversion chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310747784.3A CN116482723A (en) | 2023-06-25 | 2023-06-25 | Multipurpose beacon module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310747784.3A CN116482723A (en) | 2023-06-25 | 2023-06-25 | Multipurpose beacon module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116482723A true CN116482723A (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310747784.3A Pending CN116482723A (en) | 2023-06-25 | 2023-06-25 | Multipurpose beacon module |
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| CN (1) | CN116482723A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950545A (en) * | 2014-04-01 | 2014-07-30 | 柳州治业科技有限公司 | Airplane black box position apprizing and route tracking system |
| CN106028220A (en) * | 2016-07-12 | 2016-10-12 | 南京信息工程大学 | Broadcast volume adaptive control system |
| CN106093861A (en) * | 2016-07-31 | 2016-11-09 | 中国海洋大学 | A kind of phase place localizer beacon method and system |
| CN205844513U (en) * | 2016-07-31 | 2016-12-28 | 中国海洋大学 | A kind of phase place location beacon system |
| CN108008427A (en) * | 2017-11-03 | 2018-05-08 | 南通市海鸥救生防护用品有限公司 | Marine persons falling in water intelligence search and rescue system |
| CN109712370A (en) * | 2018-12-13 | 2019-05-03 | 南通市海鸥救生防护用品有限公司 | Marine drowning man's intelligence rescue method |
-
2023
- 2023-06-25 CN CN202310747784.3A patent/CN116482723A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950545A (en) * | 2014-04-01 | 2014-07-30 | 柳州治业科技有限公司 | Airplane black box position apprizing and route tracking system |
| CN106028220A (en) * | 2016-07-12 | 2016-10-12 | 南京信息工程大学 | Broadcast volume adaptive control system |
| CN106093861A (en) * | 2016-07-31 | 2016-11-09 | 中国海洋大学 | A kind of phase place localizer beacon method and system |
| CN205844513U (en) * | 2016-07-31 | 2016-12-28 | 中国海洋大学 | A kind of phase place location beacon system |
| CN108008427A (en) * | 2017-11-03 | 2018-05-08 | 南通市海鸥救生防护用品有限公司 | Marine persons falling in water intelligence search and rescue system |
| CN109712370A (en) * | 2018-12-13 | 2019-05-03 | 南通市海鸥救生防护用品有限公司 | Marine drowning man's intelligence rescue method |
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Application publication date: 20230725 |