CN107621650A - Antenna attitude geography information monitoring system based on motive objects network management - Google Patents

Antenna attitude geography information monitoring system based on motive objects network management Download PDF

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Publication number
CN107621650A
CN107621650A CN201710804722.6A CN201710804722A CN107621650A CN 107621650 A CN107621650 A CN 107621650A CN 201710804722 A CN201710804722 A CN 201710804722A CN 107621650 A CN107621650 A CN 107621650A
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China
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antenna
motive objects
module
data
internet
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CN201710804722.6A
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邱传凯
周荣
张小锋
陈箴
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Fujian Platinum Language Science And Technology Co Ltd
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Fujian Platinum Language Science And Technology Co Ltd
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Abstract

The present invention relates to a kind of antenna of mobile communication base station attitude monitoring technology, particularly a kind of antenna attitude geography information monitoring system based on motive objects network management, it is characterized by, mobile technology of Internet of things is employed first, mainly arrowband movement Internet of Things (NB IOT) communication transmission technology, with low cost, wide covering, low-power, big connection, the features such as high reliability, in addition, realize the collection that high data are hung to antenna, longitude and latitude is obtained by locating module, then electronic map is called to obtain the ground absolute altitude of antenna position, and use the absolute height above sea level in digital pressure altitude sensing unit acquisition antenna installation face, the actual high data of antenna extension are obtained by comparing for the two, so that data acquisition is more fully and fully, more good data basis is provided for antenna management.

Description

Antenna attitude geography information monitoring system based on motive objects network management
Technical field
It is particularly a kind of based on mobile Internet of Things pipe the present invention relates to a kind of antenna of mobile communication base station attitude monitoring technology The antenna attitude geography information monitoring system of reason.
Background technology
Antenna of mobile communication base station is used to provide wireless signal, and its external attitude and geography information directly affect wireless signal Coverage, covering quality, but antenna for base station is chronically exposed to outdoor, easily by climate, antenna fastener with the passing of time Release, the influence of the unpredictable element such as mistake construction, so as to directly influence the posture of antenna for base station, and then influence signal and cover Lid, the problems such as causing poor speech quality, traffic incomplete absorption, have a strong impact on network performance.
In the prior art, the acquisition mode of antenna attitude data has following several ways:1st, human assistance apparatus measures, adopt Coordinate artificial experience with electronics north finder or compass and hand-held gradiometer, or use electronic antenna posture instrument;2nd, use The electronic monitoring device for needing external power supply containing sensor, it is installed on outside antenna or is directly installed on antenna when producing It is internal.Thus corresponding antenna attitude data transfer mode is respectively:1st, manual entry and data are manually changed;2nd, electronics is supervised Survey device and the data collected are automatically delivered to background net management platform by transmission means such as GPRS.And corresponding antenna attitude Way to manage is respectively:1st, manually put up papery provides one-dimension code or Quick Response Code admittedly, to be used as management data inputting backstage goods and materials pipe Reason system;2nd, primary data information (pdi) of the completion record data that construction team reports during engineering as antenna handling of goods and materials.
Above-mentioned technology is disadvantageous in that:
1st, manual type needs specialty to ascend a height personnel(Climb pole or climbing tower), measuring apparatus precision it is not high, by individual from already Test that influence is big, time-consuming, does not possess real time monitoring function for observation adjustment, i.e., antenna attitude can not be known in time after exception occurs.
2nd, there are two open defects using the electronic monitoring device for needing external power supply containing sensor:One needs are outer Power supply is connect, the acquisition of power supply and laying for cable will increase design and construction complexity and holistic cost;Two locating modules are only adopted With GPS, not using other location technologies, once being disturbed by artificial or weather, inaccurate situation is positioned by producing.GPS module It is generally used for measuring longitude and latitude, if measuring height above sea level with GPS, then there are the following problems:It can only measure residing for antenna first The ground of position value definitely above sea level rather than value relatively above sea level(That is the height in antenna installation face, also referred to as antenna are actual to hang height);Separately Outside, the error with the GPS height above sea level directly measured is very big, and its precision can not meet can not be used using needs, data.Therefore Current sensor plan does not include measurement antenna and hangs height.
3rd, electronic monitoring device then needs to lay transmission cable, quantities is big, cost as used IP wire transmission modes Height, GPRS wireless transmission methods are such as used, then can be influenceed by network capacity and 2G equipment logouts, in fact it could happen that data misinformation, Event of data loss.
The content of the invention
It is an object of the invention to according to provide in place of the deficiencies in the prior art a kind of measurement accuracy, it is simple in construction, into This is low, transmission is reliable, can obtain effective antenna hangs the high antenna attitude geography information monitoring based on motive objects network management System.
The purpose of the present invention is realized by following approach:
Antenna attitude geography information monitoring system based on motive objects network management, it is characterized by, including following composition:
Motive objects connected network communication module, neck is provided with, Internet of Things chip is plugged with neck, is set in Internet of Things chip There is unique identity, the corresponding ID codes for associating installed antenna equipment of the identity;
Antenna geographical information collection unit, including locating module and digital pressure-altitude sensor unit, the two respectively with movement Internet of Things communication module connects;
Motive objects connected network communication module is connected to monitoring management platform by cordless communication network, is stored with monitoring management platform Electronic map;
The locating module measures the longitude and latitude of antenna position, and digital pressure-altitude sensor unit then obtains antenna installation The absolute height above sea level in face, and monitoring management platform is sent to by motive objects connected network communication module;
After monitoring management platform receives the longitude and latitude degrees of data of antenna position, electronic map is called, longitude and latitude degrees of data is corresponding Into electronic map, the geography information that longitude and latitude position is corresponded in electronic map, i.e. ground absolute altitude data are obtained;
It is absolute that the absolute height above sea level that digital pressure-altitude sensor unit then obtains antenna installation face is subtracted into corresponding ground Elevation data, just obtain the height in antenna installation face.
The present invention employs mobile technology of Internet of things, mainly arrowband movement Internet of Things (NB-IOT) communications first Technology, has the features such as low cost, wide covering, low-power, big connection, high reliability, and equipment uses battery as unique power supply Source, a duration of service can be up to 8-10;Similar to mobile phone SIM card, it can be carried described Internet of Things chip It is implemented in combination with being connected with the communication network of Internet of Things for identity and with communication module, therefore each monitoring of the present invention is single Member, module can be powered using battery, without laying power line and power equipment again in addition, simplified structure, dropped significantly Low quantities and engineering cost.
The main innovation point of the present invention, which also resides in, realizes the collection that high data are hung to antenna, is obtained by locating module Longitude and latitude, electronic map is then called to obtain the ground absolute altitude of antenna position, and use digital pressure altitude to pass Feel the absolute height above sea level that unit obtains antenna installation face, the actual high data of antenna extension are obtained by comparing for the two.Adopt With tortuous roundabout mode, measurement accuracy is high and simple in construction, cost is cheap.In addition, because digital pressure altitude passes Sense unit is by obtaining temperature and atmospheric pressure value, and obtains by calculating the absolute height above sea level in antenna installation face, therefore may be used also So that temperature and atmospheric pressure value are included in antenna geography information monitoring project, and it is supplied to for example agriculture, meteorological, the ecological ring of relevant industries The relevant industries such as border protection, logistics use.
The present invention can be specially further:
The locating module is three mould locating modules, including big dipper module, GPS module and GLONAS modules, or is double Mould locating module, including big dipper module and GPS module.
Big dipper module, GPS module and GLONAS modules be respectively in, module used in the global position system of the United States, Russia, in order to Positioning precision is improved, three mould locating modules are preferential, but in fact, the precision of bimodulus locating module is also enough.At some Directly it can also be positioned in occasion using Big Dipper single mode.
Also include acceleration transducer and Magnetic Sensor, the two is connected with motive objects connected network communication module respectively.
The data that acceleration transducer and Magnetic Sensor can monitor are Downtilt, antenna roll angle respectively, and Key data in antenna attitude.The acceleration transducer is two axles or 3-axis acceleration sensor.
Motive objects connected network communication module, antenna geographical information collection unit and acceleration transducer and Magnetic Sensor collect It is powered into same monitoring terminal, and with battery unit.
Thus, the ID of the identity in Internet of Things chip and respective antenna equipment, such as antenna dispatch from the factory sequence number progress A surface antenna is bound in one-to-one association binding, i.e. a monitoring terminal, and binding information is recorded in monitoring management platform, stored; And monitoring management platform can also be as the data center of fixed capital management platform.
In addition, motive objects connected network communication module is connected by cordless communication network with customer mobile terminal.
Customer mobile terminal includes mobile phone, palm PC, portable computer etc., using APP management softwares, can be achieved real-time Alarm function, it is easy to communication enterprise remote centralized management.
In summary, the invention provides a kind of antenna attitude geography information based on motive objects network management to monitor system System, it uses mobile technology of Internet of things, and Internet of Things identification code and antenna ID are associated, and is easy to carry out uniquely antenna data Property management, based on the cordless communication network of three big operators, transmission is reliable and secure, while avoids circumscripted power line or transmission signal Line, simplify structure, reduce quantities, reduce construction cost.In addition, using existing electronic map, coordinate positioning and height Data acquisition, effectively obtain accurate actual antenna and hang high data so that data acquisition is antenna tube more fully and fully Reason provides more good data basis.
Brief description of the drawings
The system that Fig. 1 show the antenna attitude geography information monitoring system of the present invention based on motive objects network management Topological diagram;
The present invention is further elaborated below in conjunction with the accompanying drawings.
Embodiment
Most preferred embodiment:
Referring to the drawings 1, the antenna attitude geography information monitoring system based on motive objects network management, including following composition:
Motive objects connected network communication module, neck is provided with, Internet of Things chip is plugged with neck, is set in Internet of Things chip There is unique identity, the corresponding ID codes for associating installed antenna equipment of the identity;Antenna geographical information collection unit, Including locating module and digital pressure-altitude sensor unit, the two is connected with motive objects connected network communication module respectively;Acceleration Sensor and Magnetic Sensor, the two is connected with motive objects connected network communication module respectively.The motive objects connected network communication module, antenna Geographical information collection unit and acceleration transducer and Magnetic Sensor are integrated into same monitoring terminal, and with battery unit It is powered.Battery is used to avoid external power supply for the solution in unique power supply source, to construction management and follow-up dimension Shield offers convenience.Work endurance reaches 8 ~ 10 years.
The principle of above-mentioned monitoring terminal and effect are as follows:
Internet of Things chip both used as network service, was used as unique identity again(Label living).Internet of Things chip is with leading to Believe module binding, once removing, module can not use with chip.Locating module uses three moulds(The Big Dipper+GPS+GLONAS)Or Bimodulus(The Big Dipper+GPS)Or single mode(The Big Dipper), for obtaining the longitude and latitude degrees of data of antenna position.In positioning accuracy request not High application scenarios, pass through the network positions function of arrowband Internet of Things in itself, you can realize the low precision positioning of antenna.
Digital pressure-altitude sensor can measure air pressure, temperature and elevation simultaneously, and its intermediate altitude refers to antenna installation face(My god Face)Absolute height above sea level, be to be carried out calculating acquisition according to the air pressure that measures, temperature.Sensor can be according to air pressure and temperature Value directly exports the absolute height above sea level of terrace, and remote monitoring platform calls electronic map(Gao De, Baidu, Tengxun, paddy Song, search dog etc.), the longitude and latitude detected using locating module in monitoring terminal got ready on the electronic map, draws ground Height above sea level;The absolute height above sea level of terrace is finally subtracted into the height above sea level on corresponding ground, that is, obtains accurate antenna and hangs It is high(That is the extension of monitoring terminal is high.Hang high accuracy difference of digital pressure-altitude sensor used by and can reach 0.1 meter.
The data that antenna geographical information collection unit and acceleration transducer and Magnetic Sensor can monitor include:Antenna Longitude and latitude, Downtilt, antenna roll angle, antenna hang height, temperature, air pressure etc..Wherein in monitoring terminal integrate two axles or 3-axis acceleration sensor brings adopting for antenna attitude information into monitoring aerial roll angular data while by antenna roll angle Collect scope.
Motive objects connected network communication module(Particularly arrowband wireless internet of things (NB-IoT) communication module)It is responsible for passing through communication Relevant information is transmitted to remote monitoring platform or user's Mobile solution terminal in operator base station.Remote monitoring platform is born Blame and the antenna data that is collected into handled, realize modularization, can fast and flexible realize that function iteration upgrades, meanwhile, lead to Protocol interface is crossed, achievable and common carrier handling of goods and materials platform, wireless Optimization Platform intercommunication, and it is provided to fixed assets Management platform is produced as data basis.In addition, remote monitoring platform realizes cell phone application Real-time Alarm function, equipment control Module, it is easy to communication enterprise remote centralized management.
When installing monitoring terminal on antenna, dispatch from the factory sequence number (SN codes) and the sequence number of monitoring terminal in itself of antenna is existed Admittedly carrying out one-to-one binding in money management platform, i.e., a monitoring terminal binds a surface antenna, and binding information is in fixed assets pipe Record, store in platform;Antenna sequence number refers to antenna manufacturer and printd the business of every surface antenna uniqueness on antenna nameplate Product identification code;Antenna fixed capital management platform is by receiving the latitude and longitude information from monitoring terminal, corresponding back-end data Storehouse, obtain the specific place site information of antenna and accurate positional information;The fixed capital management platform provides including antenna Production information collection module, antenna asset search management module, antenna make an inventory management module, antenna depreciation management module, at data Managing module, exception processing module, antenna borrows also management module, Back Administration Module, the fixed capital management platform to realize Fixed assets monitor in real time, the analysis of remote management, antenna asset data, existing antenna asset search, the function of abnormality processing.
By the antenna attitude geography information monitoring system of the present invention based on motive objects network management, due to equipment Without external power supply, the data transfer based on technology of Internet of things quickly, stably, reliably, therefore also brings unexpected technology to imitate Fruit:Can set remote terminal upload data the frequency, general 1 day 4 times.When bad weather occurs, it can also increase the frequency.Entirely Net system internal antenna posture can all upload in very short time, greatly improve the efficiency of antenna attitude collection;Further improve The stability of the network operation.
It is also possible to apply the invention to traffic department's guideboard, monitoring bar;Kiowatt power tower, transportation department's electric force pole tower, Steel tower company steel tower and pole, advertising company's billboard, municipal unit light pole, public security unit traffic lights, monitoring bar, alert rod Deng, energy unit pipe-line, building settlement observation, Geological Hazards Monitoring etc..
The not described part of the present invention is same as the prior art.

Claims (4)

1. the antenna attitude geography information monitoring system based on motive objects network management, it is characterized by, including following composition:
Motive objects connected network communication module, neck is provided with, Internet of Things chip is plugged with neck, is set in Internet of Things chip There is unique identity, the corresponding ID codes for associating installed antenna equipment of the identity;
Antenna geographical information collection unit, including locating module and digital pressure-altitude sensor unit, the two respectively with movement Internet of Things communication module connects;
Motive objects connected network communication module is connected to monitoring management platform by cordless communication network, is stored with monitoring management platform Electronic map;
The locating module measures the longitude and latitude of antenna position, and digital pressure-altitude sensor unit then obtains antenna installation The absolute height above sea level in face, and monitoring management platform is sent to by motive objects connected network communication module;
After monitoring management platform receives the longitude and latitude degrees of data of antenna position, electronic map is called, longitude and latitude degrees of data is corresponding Into electronic map, the data message that longitude and latitude position is corresponded in electronic map, i.e. ground absolute altitude data are obtained;
It is absolute that the absolute height above sea level that digital pressure-altitude sensor unit then obtains antenna installation face is subtracted into corresponding ground Elevation data, just obtain the height in antenna installation face.
2. the antenna attitude geography information monitoring system according to claim 1 based on motive objects network management, its feature It is, the locating module or be three mould locating modules, including big dipper module, GPS module and GLONAS modules, or be double Mould locating module, including big dipper module and GPS module.
3. the antenna attitude geography information monitoring system according to claim 1 based on motive objects network management, its feature It is, also includes acceleration transducer and Magnetic Sensor, the two is connected with motive objects connected network communication module respectively.
4. the antenna attitude geography information monitoring system according to claim 1 based on motive objects network management, its feature It is, motive objects connected network communication module, antenna geographical information collection unit and acceleration transducer and Magnetic Sensor are integrated It is powered into same monitoring terminal, and with battery unit.
CN201710804722.6A 2017-09-08 2017-09-08 Antenna attitude geography information monitoring system based on motive objects network management Pending CN107621650A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108572784A (en) * 2018-05-02 2018-09-25 广东华远国土工程有限公司 A kind of geography information big data management system
CN109101044A (en) * 2018-08-03 2018-12-28 广州瀚信通信科技股份有限公司 A kind of aerial information acquisition and adjustment system based on technology of Internet of things
CN109548050A (en) * 2018-12-29 2019-03-29 京信通信技术(广州)有限公司 Mobile network covers detection device and system
CN111426304A (en) * 2020-05-09 2020-07-17 宋立波 Accurate attitude positioning method based on vision, satellite positioning and GIS algorithm
CN112345121A (en) * 2020-10-30 2021-02-09 福建铂语物联科技有限公司 Strain clamp monitoring system capable of automatically uploading temperature data
CN113747454A (en) * 2020-05-27 2021-12-03 中国联合网络通信集团有限公司 Network optimization method, device, equipment and storage medium
CN114254868A (en) * 2021-11-23 2022-03-29 中国联合网络通信集团有限公司 Building height index measuring and calculating method, server and storage medium
CN115277769A (en) * 2022-07-20 2022-11-01 伟志股份公司 GIS (geographic information System) -based Internet of things data management system and method
CN117308938A (en) * 2023-11-29 2023-12-29 长春通视光电技术股份有限公司 Inertial navigation north-seeking convergence error rapid compensation method based on multiple laser ranging
CN114254868B (en) * 2021-11-23 2024-10-29 中国联合网络通信集团有限公司 Building height index measuring and calculating method, server and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928015A (en) * 2012-10-17 2013-02-13 西南交通大学 Mobile monitoring device for emergency- relief water internet of things
CN103402217A (en) * 2013-07-29 2013-11-20 长沙威佳通信科技有限公司 Base station antenna parameter processing system
CN104596526A (en) * 2014-04-17 2015-05-06 腾讯科技(深圳)有限公司 Positioning point matching method and positioning point matching apparatus
US20170251443A1 (en) * 2016-02-26 2017-08-31 Lg Electronics Inc. Method for receiving system information in wireless communication system that supports narrowband iot and apparatus for the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928015A (en) * 2012-10-17 2013-02-13 西南交通大学 Mobile monitoring device for emergency- relief water internet of things
CN103402217A (en) * 2013-07-29 2013-11-20 长沙威佳通信科技有限公司 Base station antenna parameter processing system
CN104596526A (en) * 2014-04-17 2015-05-06 腾讯科技(深圳)有限公司 Positioning point matching method and positioning point matching apparatus
US20170251443A1 (en) * 2016-02-26 2017-08-31 Lg Electronics Inc. Method for receiving system information in wireless communication system that supports narrowband iot and apparatus for the same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
公安部科技信息化局等: "《公安物联网技术发展报告(2016)》", 31 August 2017 *
窦灵平: ""基于GIS与通信技术的地质灾害监测传感器布设研究"", 《中国优秀硕士学位论文全文数据库基础科学辑》 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108572784A (en) * 2018-05-02 2018-09-25 广东华远国土工程有限公司 A kind of geography information big data management system
CN108572784B (en) * 2018-05-02 2021-04-23 广东华远国土工程有限公司 Geographic information big data management system
CN109101044A (en) * 2018-08-03 2018-12-28 广州瀚信通信科技股份有限公司 A kind of aerial information acquisition and adjustment system based on technology of Internet of things
CN109548050A (en) * 2018-12-29 2019-03-29 京信通信技术(广州)有限公司 Mobile network covers detection device and system
CN111426304A (en) * 2020-05-09 2020-07-17 宋立波 Accurate attitude positioning method based on vision, satellite positioning and GIS algorithm
CN111426304B (en) * 2020-05-09 2022-02-22 宋立波 Accurate attitude positioning method based on vision, satellite positioning and GIS algorithm
CN113747454A (en) * 2020-05-27 2021-12-03 中国联合网络通信集团有限公司 Network optimization method, device, equipment and storage medium
CN113747454B (en) * 2020-05-27 2024-03-26 中国联合网络通信集团有限公司 Network optimization method, device, equipment and storage medium
CN112345121A (en) * 2020-10-30 2021-02-09 福建铂语物联科技有限公司 Strain clamp monitoring system capable of automatically uploading temperature data
CN114254868A (en) * 2021-11-23 2022-03-29 中国联合网络通信集团有限公司 Building height index measuring and calculating method, server and storage medium
CN114254868B (en) * 2021-11-23 2024-10-29 中国联合网络通信集团有限公司 Building height index measuring and calculating method, server and storage medium
CN115277769A (en) * 2022-07-20 2022-11-01 伟志股份公司 GIS (geographic information System) -based Internet of things data management system and method
CN115277769B (en) * 2022-07-20 2023-12-15 伟志股份公司 GIS-based internet of things data management system and method
CN117308938A (en) * 2023-11-29 2023-12-29 长春通视光电技术股份有限公司 Inertial navigation north-seeking convergence error rapid compensation method based on multiple laser ranging
CN117308938B (en) * 2023-11-29 2024-02-20 长春通视光电技术股份有限公司 Inertial navigation north-seeking convergence error rapid compensation method based on multiple laser ranging

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