CN102594465A - Vehicle-mounted mobile multimedia broadcasting field intensity covering road tester - Google Patents
Vehicle-mounted mobile multimedia broadcasting field intensity covering road tester Download PDFInfo
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- CN102594465A CN102594465A CN2011100054671A CN201110005467A CN102594465A CN 102594465 A CN102594465 A CN 102594465A CN 2011100054671 A CN2011100054671 A CN 2011100054671A CN 201110005467 A CN201110005467 A CN 201110005467A CN 102594465 A CN102594465 A CN 102594465A
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Abstract
The invention discloses a vehicle-mounted mobile multimedia broadcasting field intensity covering road tester, relates to the technical field of broadcast transmission, and comprises an industrial personal computer, as well as a test antenna, a GPS (Global Positioning System) antenna, an external power supply and a temperature-humidify sensor, which are connected with the industrial personal computer respectively. The industrial personnel computer consists of a GPS module, a signal demodulation module and a power module. The input end of the GPS module is connected with the GPS antenna, and the input end of the signal demodulation module is connected with the test antenna. A data switching board supplies power for the GPS module and the temperature-humidity sensor, integrates the data transmitted by the GPS module and the temperature-humidity sensor, and then transmits the data to a PC (Personal Computer) software system device, and the power module supplies power for the data switching board and the signal demodulation module. The vehicle-mounted mobile multimedia broadcasting field intensity covering road tester monitors the content of mobile multimedia broadcasting signals automatically, monitors and supervises the demodulated and decoded signals in real time, records programs, integrates the field test and data processing into a whole, and provides high-efficiency and powerful support and help for the analysis of the field intensity covering message of a CMMB (China Mobile Multimedia Broadcasting) transmitter.
Description
Technical field
The present invention relates to the broadcast transmission technical field, particularly can make the vehicle-mounted removable multimedia broadcasting field intensity overlapping road detecting appearance of correct analysis and data record the coverage condition of mobile multimedia broadcast signal.
Background technology
China Mobile multimedia broadcasting CMMB is the formal promulgation of SARFT(The State Administration of Radio and Television), by the CMMB standard of China's independent research, can satisfy the demand that people " see TV whenever and wherever possible ".At present, national CMMB networking building-up work is accomplished basically, and in networking and later stage network operation, coverage test is in an important link all the time.
In the prior art, geography information and field intensity information that the engineering staff adopts field intensity meter to come the hand-kept point usually are through the coverage condition of the present network of these information analyses, so that take correct processing scheme.But this mode efficient is low, and accuracy is not high, and subsequent treatment is loaded down with trivial details, time-consuming, and problem is found untimely.
Summary of the invention
To the deficiency that exists in the above-mentioned prior art, the purpose of this invention is to provide a kind of vehicle-mounted removable multimedia broadcasting field intensity overlapping road detecting appearance.It can be monitored the mobile multimedia broadcast signal content automatically; Signal to demodulation, decoding carries out real-time listening, supervises and performance recording; On-the-spot test and data processing are integrated in one, efficient and strong support and help are provided for analyzing CMMB transmitter field intensity coverage information.
In order to reach the foregoing invention purpose, technical scheme of the present invention realizes as follows:
A kind of vehicle-mounted removable multimedia broadcasting field intensity overlapping road detecting appearance, its design feature is that it comprises industrial computer and the test antenna that is connected with industrial computer respectively, gps antenna, external power supply and Temperature Humidity Sensor.Said industrial computer is made up of GPS module, signal demodulation module and power module.The input termination gps antenna of GPS module, the input termination test antenna of signal demodulation module, the output port of signal demodulation module is the USB mouth.GPS module and Temperature Humidity Sensor are supplied power by the data keyset; The data keyset is integrated the back to the data of GPS module and Temperature Humidity Sensor transmission and is sent PC software systems device to through the RS232 interface, and power module is given data keyset and the power supply of signal demodulation module.Industrial computer PC software systems device is built-in to be analyzed and program stored and show related data the data that collect.
In above-mentioned road detector, said external power supply adopts booster battery power supply on the power supply of automobile cigarette lighter power supply, automobile current generator power supply, the car, UPS power supply or automobile-used inverter power supply.
The present invention can gather data automatically, and the data that collect are analyzed and stored owing to adopted said structure.All collections and the data of monitoring out can be shown by the industrial computer display screen, can also be provided with in the program to demodulated data analyze in a different manner, the function of playback, perhaps remote access.
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a principle schematic of the present invention;
Fig. 3 is the outside drawing of industrial computer in the embodiment of the invention;
Fig. 4 is test analysis figure outside the CMMB signal covering chamber in the embodiment of the invention;
Fig. 5 is a CMMB signal covering chamber build-in test analysis chart in the embodiment of the invention;
Fig. 6 is a CMMB signal cover data column analysis chart in the embodiment of the invention;
Fig. 7 is a CMMB signal cover data query graph in the embodiment of the invention.
Embodiment
Referring to Fig. 1 and Fig. 2, the present invention includes industrial computer and the test antenna that is connected with industrial computer respectively, gps antenna, external power supply and Temperature Humidity Sensor.Industrial computer is made up of GPS module, signal demodulation module and power module.The input termination gps antenna of GPS module, the input termination test antenna of signal demodulation module, the output port of signal demodulation module is the USB mouth.GPS module and Temperature Humidity Sensor are supplied power by the data keyset; The data keyset is integrated the back to the data of GPS module and Temperature Humidity Sensor transmission and is sent PC software systems device to through the RS232 interface, and power module is given data keyset and the power supply of signal demodulation module.Industrial computer PC software systems device is built-in to be analyzed and program stored and show related data the data that collect.External power supply adopts booster battery power supply on the power supply of automobile cigarette lighter power supply, automobile current generator power supply, the car, UPS power supply or automobile-used inverter power supply.
When the present invention works, can gather the signal data of gps data, humiture data, demodulate/decode in real time and accomplish to measure the channel TV program monitoring, task such as supervise.The signal demodulation module mainly is responsible for radiofrequency signal is carried out demodulation, and furnishing us with needs data monitored, sends PC software then to, like field intensity, Packet Error Ratio, audio, video data etc.; The GPS module mainly provides geographic information data; Temperature Humidity Sensor provides the humiture of measurement environment.
Programming in the industrial computer of the present invention mainly comprises following several respects:
(1) digital sampling and processing
Main be responsible for communicating by letter with the signal demodulation module with the data keyset, the processing of Data Format Transform and metadata cache, communication interface is RS232 and USB interface.Frequency acquisition is to carry out in the cycle with 1s, reflects that in real time present case, data comprise gps data, humiture, field intensity, Packet Error Ratio etc.
(2) data disaply moudle
The main various forms of signs of being responsible for image data mainly contain following several respects:
1. map shows, and is as shown in Figure 4.
Software is implanted electronic chart comparatively accurately, uses the map of Mapinfo form to realize the monitoring management to the broadcast television monitoring website, and it is one of its critical function that geographical visualization of data is expressed.When vehicle-mounted outdoor test; Can on map, identify the detailed geographical position of the broadcast television monitoring station and monitoring target through GIS; For example site and other relevant information of known transmitting station address, the monitoring station in the database; Be presented at the field intensity data that collect on the map according to wheelpath, make the tester can see coverage condition intuitively.Possess basic functions such as map amplifies, dwindles, range finding simultaneously, the convenient use.Can show real time data and historical data.
Except to the outdoor field strength measurement that carries out, also can carry out the field intensity coverage test such as large-scale shopping plaza, public place of entertainment to indoor; The interior architecture plane graph is imported; Double-click the interface and get test ready, after test finishes, can preserve photo current; Also can show (comprising the demonstration that level is interval) to the picture of preserving through being written into historical picture.
Mainly field intensity and error code/Packet Error Ratio are carried out real-time statistics, in measuring process, to the real-time statistics of data, show with the curve chart mode that ordinate is a numerical value unit, abscissa is the time.Be primarily aimed at real time data.
Mainly field intensity and error code/Packet Error Ratio are carried out the historical data statistics, the database that selection will be added up is added up the data in the database, shows with the column diagram mode, and ordinate is shared percentage, and abscissa is each thresholding reference value.Be primarily aimed at historical data.
In measuring process or in the historical data replayed section, can compare in real time, generate corresponding extreme value and mean value, be convenient to real-time analysis the field intensity data.Can carry out the inquiry of various dimensions combination to frequency, measurement, coordinate range, acquisition time, number range etc.; Query Result can be derived the Excel document; Simultaneously can be with the data importing Google Maps of deriving, condition query is carried out to the data of being concerned about in the selecting data storehouse.Can also select the field strong point in the map, and show selected field intensity numerical value and longitude and latitude data.
(3) follow-up data processing module
It mainly is storage administration to image data.
1. possesses the database storage function; Data to collecting are carried out real-time storage, mainly comprise two types database:
Store some time somewhere data measured in the basic measurement data storehouse, comprises time, longitude and latitude, each measurement data, humiture.
Tower coordinate data storehouse can be provided with reference point at map interface, so that analyze data, comprises longitude and latitude, title, remarks.
2. audio frequency and video playing function: the initial time slot of program can be set, play and want the program video of watching, can store (but self routing storage) to audio-video document simultaneously.
(4) module is set
In order to make the test macro operate as normal; Before test, must be provided with through the relevant parameter of computer to testing equipment, mainly to parameter and the frequency spectrograph of frequency, intensity level and various error rate thresholding, the demodulation module that will test communicate information such as address and be provided with.
The present invention is owing to be driver test system, and external power supply will be arranged is its power supply in case the hardware device power supply exhausts.External power supply is mainly industrial computer, data keyset, the power supply of signal demodulation module, should guarantee that above equipment uses more than three hours simultaneously.The preferably vehicle-mounted inverter of the present invention, because consider the conversion efficiency of inverter, generally between 70%-80%, the inverter maximum power that generally is inserted on the cigar lighter at present is 150W (200W), need be with the storage battery folder from the level power taking greater than 150W.
Overall power (W)=demodulation module+GPS module+Temperature Humidity Sensor+industrial computer
Most equipment overall package in the road detector of the present invention can reduce the quantity of connection device like this when measuring in an industrial computer, be convenient for carrying.Main interface should possess USB, RS232, RJ45 Ethernet interface.Because it is vehicle-mounted that present device is used for, consider situation such as weight, shockproof, heat radiation, working temperature are suitable.Use when of the present invention, open machine power, install test antenna and gps antenna, open monitoring of software and can use.The present invention also can external other equipment, like frequency spectrograph etc.
Claims (2)
1. vehicle-mounted removable multimedia broadcasting field intensity overlapping road detecting appearance; It is characterized in that; It comprises industrial computer and the test antenna that is connected with industrial computer respectively, gps antenna, external power supply and Temperature Humidity Sensor, and said industrial computer is made up of GPS module, signal demodulation module and power module, the input termination gps antenna of GPS module; The input termination test antenna of signal demodulation module; The output port of signal demodulation module is the USB mouth, and GPS module and Temperature Humidity Sensor are by the power supply of data keyset, and the data keyset is integrated the back to the data of GPS module and Temperature Humidity Sensor transmission and sent PC software systems device to through the RS232 interface; Power module supplies power for data keyset and signal demodulation module, and industrial computer PC software systems device is built-in to be analyzed and program stored and show related data the data that collect.
2. vehicle-mounted removable multimedia broadcasting field intensity overlapping road detecting appearance according to claim 1; It is characterized in that said external power supply adopts booster battery power supply on the power supply of automobile cigarette lighter power supply, automobile current generator power supply, the car, UPS power supply or automobile-used inverter power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100054671A CN102594465A (en) | 2011-01-12 | 2011-01-12 | Vehicle-mounted mobile multimedia broadcasting field intensity covering road tester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349335A (en) * | 2013-08-09 | 2015-02-11 | 中国移动通信集团安徽有限公司 | Network covering plan index analysis method and system |
| CN106559154A (en) * | 2015-09-25 | 2017-04-05 | 中国传媒大学南广学院 | The automatic monitoring system and method for broadcast television signal |
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| KR20070013052A (en) * | 2005-07-25 | 2007-01-30 | 주식회사 팬택앤큐리텔 | A system and method for measuring wireless sensitivity in a mobile communication terminal supporting digital multimedia broadcasting service |
| CN101271630A (en) * | 2007-03-23 | 2008-09-24 | 陆欣 | Vehicle mounted traffic information terminal based on digital multimedia broadcast |
| CN201947279U (en) * | 2011-01-12 | 2011-08-24 | 北京同方吉兆科技有限公司 | Road tester for field intensity coverage of vehicle-mounted movable multimedia broadcasting |
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2011
- 2011-01-12 CN CN2011100054671A patent/CN102594465A/en active Pending
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| KR20070013052A (en) * | 2005-07-25 | 2007-01-30 | 주식회사 팬택앤큐리텔 | A system and method for measuring wireless sensitivity in a mobile communication terminal supporting digital multimedia broadcasting service |
| CN101271630A (en) * | 2007-03-23 | 2008-09-24 | 陆欣 | Vehicle mounted traffic information terminal based on digital multimedia broadcast |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349335A (en) * | 2013-08-09 | 2015-02-11 | 中国移动通信集团安徽有限公司 | Network covering plan index analysis method and system |
| CN104349335B (en) * | 2013-08-09 | 2017-11-21 | 中国移动通信集团安徽有限公司 | A kind of network coverage planning index analysis method and system |
| CN106559154A (en) * | 2015-09-25 | 2017-04-05 | 中国传媒大学南广学院 | The automatic monitoring system and method for broadcast television signal |
| CN106559154B (en) * | 2015-09-25 | 2018-09-04 | 中国传媒大学南广学院 | The automatic monitoring system and method for broadcast television signal |
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Application publication date: 20120718 |