CN101982980A - Intelligent real-time monitoring integrated platform for digital television transmitters - Google Patents
Intelligent real-time monitoring integrated platform for digital television transmitters Download PDFInfo
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- CN101982980A CN101982980A CN 201010501242 CN201010501242A CN101982980A CN 101982980 A CN101982980 A CN 101982980A CN 201010501242 CN201010501242 CN 201010501242 CN 201010501242 A CN201010501242 A CN 201010501242A CN 101982980 A CN101982980 A CN 101982980A
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Abstract
The invention relates to an intelligent real-time monitoring integrated platform which comprises optical signal power detection and control, RF output and amplification detection and control of an optical receiver, detection and control of a modulator, detection and control of an automatic gain controller AGC, detection and control of a preamplifier and a final power amplifier, detection and control of a main power supply, detection and control of temperature and a fan, communication transmission and remote management and detection of transmitters produced by a manufacturer realized by a management center of the manufacturer; and the intelligent real-time monitoring integrated platform can realize intelligent integrated monitoring of the digital television transmitters, further improve the working quality of the television transmitters, upgrade the level of the television transmitters in China and reduce a gap between China and developed countries. The intelligent real-time monitoring integrated platform is characterized in that the basic design ideal is to construct unified regulations and set up a unified platform; and a unified hardware platform and a software platform are used for matching with different peripheral modules, thereby being applicable to display and control needs of the different transmitters.
Description
Technical field
The present invention is the comprehensively monitoring for digital TV transmitter, and a kind of intelligentized design is provided.Make its electric power system, input signal etc. detection, carry out the control of Long-distance Control, automatic gain AGC, various button and demonstration by network, or the like, all can realize intellectuality, and provide an intelligentized real-time monitoring comprehensive platform for digital TV transmitter.Functions such as intelligent trouble processing, long-distance measure and control, data management are implemented in realization to transmitter.This is most important for the reliability that improves digital TV transmitter.Thereby improved the craftmanship of television transmitter, promoted the level of China's television transmitter and the gap between shortening and the developed country.
Background technology
TV and Radio Service, station are the mouthpieces of party and state, are very important public opinion positions, also are the important needs of broad masses of the people's spiritual civilization; Television transmitter then is a TV and Radio Service, one of the very important equipment of standing.Current, the digital TV transmitter of China's domestic production, aspect comprehensively monitoring and demonstration, still can not be fully up to expectations, also realize intelligent and high-caliber unattended operation and huge storage capacity recording far away.
The intelligent comprehensive platform of monitoring in real time is made up of nucleus module, data processing unit, display unit, control unit, detecting unit, communication interface, power supply interface and microprocessor etc.
The theory diagram of the intelligent comprehensive platform of monitoring is in real time seen " description of drawings " Fig. 1.
Summary of the invention
In view of above-mentioned, the objective of the invention is to, the design of the intelligent comprehensive platform of monitoring in real time is provided for digital TV transmitter.Basic design philosophy is: framework is unified standard, builds the unified platform.With unified hardware platform and software platform, cooperate different peripheral modules, adapt to different transmitters and show the control needs.Design contain electric power system, input signal etc. detection, carry out Long-distance Control, automatic gain control AGC, various button and demonstration by network, or the like, make it to realize intelligent, real time implementation.Particularly, satisfy the following demand:
1, optical signal power prosecution
The optical signal power normal range of operation is-5dBm～+ 2dBm ,≤-5dBm shows low-power or do not have luminous power and report to the police, 〉=+2dBm shows that high power reports to the police.
2, optical receiver RF output and amplification prosecution
Optical receiver RF output normal range of operation is 80dB μ V～100dB μ V, and≤80dB μ V shows low level or no-output warning, and 〉=100dB μ V shows the high level warning.
3, modulator Detection ﹠ Controling
Requirement detects and controls the every index of modulator.
4, automatic gain control AGC detects control
Automatic gain control AGC requires to have time-delay protecting against shock function (time is more than 45 seconds), and remote request has automatically and manual switchover, and ± 10dB control range requires losing lock to report to the police simultaneously.
5, prime amplification detection control
Prime amplify to require the input and output level detection, and the incoming level scope is-15dBm～+ 5dBm, exceed and be lower than scope and all report to the police.The stabilizing output level degree is ± 0.2dB to exceed and be lower than scope and all report to the police.Detect electric current, voltage and the temperature of this power amplifier simultaneously.Warning overruns.
6, final stage power amplifier detects control
Final stage is amplified requirement to the input and output power detection, and the incoming level stability is ± 0.2dB to exceed and be lower than scope and all report to the police.The stabilizing output level degree is ± 0.2dB to exceed and be lower than scope and all report to the police.Detect electric current, voltage and the temperature of this power amplifier simultaneously.Warning overruns.
7, main power source detects control
Requirement detects in real time to output input current, voltage and the temperature of main power source.Warning overruns.Require power supply to possess time-delay power up function (time is more than 45 seconds).Remote on-off can be realized, automatic switching can be realized significant trouble or fault self-recovery occurring.
8, temperature and fan detect and control
Require fan to possess with temperature and just change, rotating speed also changes.For special microthermal climate even can stop the rotation, rotation automatically behind the temperature height.Temperature is high more, and rotating speed is fast more.Require temperature sensor to get final product perception cabinet skin temperature, can detect the cabinet internal strength again and put temperature.Detect blast,, can report to the police and shutdown automatically if after fan is gone bad.
9, communication transmission
Content of communciation can be realized long-range detection, diagnosis and control.Internal transmission adopts the stronger transmission means (485 normal response mode such as grade) of antijamming capability, and externally transmission means both can realize based on ICP/IP protocol that Optical Fiber Transmission (wired) also can realize GPRS or 3G transmission (wireless).For the ease of maintenance, external interface can connect the inner control version that shows of this machine simultaneously.
Description of drawings
Fig. 1 is a general principles block diagram of the present invention.
Fig. 2 is for being applicable to the touch display screen photo of large-scale digital TV transmitter (digital power 500W and more than).
Fig. 3 is for being applicable to the display screen of medium and small digital TV transmitter (digital power 500W is following).
Fig. 4 is the employed finger-board schematic diagram of keyboard interface of the present invention.
Fig. 5 is " the message processing flow figure " of embedded software main program of the present invention.
Embodiment
Intelligent each major part of the comprehensive platform of monitoring in real time is described as follows:
1, the hardcore module adopts the LM3S6938ARM single-chip microcomputer.LM3S6938 carries eight road A/D converters, and resource is abundant, complete function.Build unified software platform framework with this, adopt existing operating system FreeRTOS, various resources are dispatched in unified management, coordinate various peripheral hardwares and interface.Various peripheral hardwares and interface software are by modularized design.And:
A) software program of product is write by network interface and upgrades;
B) unit type of product can freely be revised;
C) power grade of product can freely be revised;
D) display screen of product and content can freely be revised;
E) the IP address of product can freely be revised;
F) possess remote monitoring functions such as " N+1 " control system.
2, data-processing interface
It is 1.5V that the rating data level of input data-processing interface is unified standard, is 1/2 range of A/D conversion; The use only for referencial use of range more than 1/2.
With power output Po is example, no matter be 5,10,20,50,100,200,300,500, the power grade of 1K watt, all sends into A/D converter with the rated output power detecting circuit of 1.5V, shows corresponding power by software processes.
The input of input data-processing interface should have suitable Filtering Processing circuit, guarantees that the clutter of input signal is little; Simultaneously software also must be taked arithmetic average, removes maximum, remove digital filtering algorithm such as minimum value, guarantees the accuracy that shows.
In order to guarantee the standard of input interface, add the potentiometer modulate circuit in the A/D input, it is 1.5V that the 3.0V level of each road input is adjusted into unified standard.
A) power amplifier temperature
Temperature range-50～+ 100 ℃ ,+25 ℃ rated voltage is 1.5V, and-50 ℃ voltage is 0V, and+100 ℃ voltage is 3V;
| Minimum value | Rated value | Maximum | Remarks | |
| Temperature | -50℃ | +25℃ | +100℃ | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
B) supply power voltage
Supply power voltage generally has+12V ,+32 (28) V ,+48V;
| +12V | Minimum value | Rated value | Maximum | Remarks |
| Supply power voltage | 0V | +12V | +24V | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| +32V | Minimum value | Rated value | Maximum | |
| Supply power voltage | 0V | +32V | +64V | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| +48V | Minimum value | Rated value | Maximum | |
| Supply power voltage | 0V | +48V | +96V | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
C) supply current
The electric current stepping is as follows: 5A, 10A, 20A, 50A; Preceding two grades of machines that are applicable to that digital 100W is following; The 20A shelves are applicable to that the power amplifier unit of digital 500W, 1kW detects; The 50A shelves are applicable to the high-power transmitter complete machine current detecting of digital 500W, 1kW etc.
| 5A | Minimum value | Rated value | Maximum | |
| Supply current | 0A | 5A | 10A | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 10A | Minimum value | Rated value | Maximum | |
| Supply current | 0A | 10A | 20A | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 20A | Minimum value | Rated value | Maximum | |
| Supply current | 0A | 20A | 40A | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 50A | Minimum value | Rated value | Maximum | |
| Supply current | 0A | 50A | 100A | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
D) power output Po
The power output stepping is as follows: 5W, 10W, 20W, 50W, 100W, 200W, 300W, 500W, 1kW (being digital power output); Because power detection non-linear,, and could determine after contrasting with actual measurement so the video data of each class should be through suitable correction (processings); The data of some class may also need to carry out just can draw the data that comparatively are suitable for after piecewise linearity is changed processing.
| 5W | Minimum value | Rated value | Maximum |
| Power output | 0W | 5W | 10W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 10W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 10W | 20W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 20W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 20W | 40W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 50W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 50W | 100W | |
| Corresponding interface voltage | 0V | 1.5V | 3V | |
| 100W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 100W | 200W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 200W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 200W | 400W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 300W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 300W | 600W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 500W | Minimum value | Rated value | Maximum | |
| Power output | 0W | 500W | 1kW | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
| 1kW | Minimum value | Rated value | Maximum | |
| Power output | 0W | 1kW | 2kW | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
E) reflection power Pr
| Minimum value | Rated value | Maximum | ||
| Reflection power | 0W | 5W | 10W | |
| Corresponding interface voltage | 0V | 1.5V | 3V |
3, display interface
Manage, control, be provided with various display screens and show required interface and parameter, when using touch-screen, obtain relevant information and instruction by panel.Only adopt any screen in actual use, even can not have screen, but in the present invention, the application program module of each screen is all finished.
Mainly be applicable to the touch display screen of large-scale digital TV transmitter (digital power 500W and more than), promptly DMT80600S080-03WT touch-screen and DMT32240T035-01WN take same serial ports; See " description of drawings " Fig. 2.
Another display screen, applicable to medium and small digital TV transmitter (digital power 500W is following), promptly JHD529M1-12864F, LM2068R take same parallel port; See " description of drawings " Fig. 3.
4, control interface
A) alternating-current switch control interface (12V, control switch machine)
Possess the time-delay power up function, delay time generally speaking and started shooting in 15 seconds, the time-delay scalable, time-delay can reach more than 60 seconds; The high level start.
B) AGC control automatically
Control figure potentiometer MCP41 series and X9C series potentiometer are not placed on the hardware platform, and are placed on corresponding AGC unit.Control interface provide 3 control line/CS, SI, SCK or/CS ,/INC, U//D, control digital regulation resistance when need being convenient to.
C) be provided with three standby control interfaces (12V, equipment such as control blower fan) in addition
5, detect interface
A) ray machine
The abnormality detection of ray machine input signal, the high level of requirement input 3.3V.
B) AGC detects interface
The abnormality detection of RF input signal, the high level of requirement input 3.3V.
C) two redundant detection interfaces, the high level of requirement input 3.3V detects equipment such as blower fan.
6, communication interface
A) network interface (RJ45)
Network interface is the main communication interface of this machine of transmitter and remote monitoring platform, adopts ICP/IP protocol to link to each other with remote monitoring platform by local area network (LAN) or internet, realizes the Long-distance Control of transmitter.
This mouthful of while program as transmitter writes and the use of upgrading.
B) RS485 interface
The RS485 interface has the extension set interface used as extension set and two kinds of the host interface used as main frame.
C) extension set (unit) interface
The extension set interface is accepted the instruction of main frame, outwards exports relevant parameter.
D) host interface
Main frame connects each extension set, obtains relevant parameter.
E) wave point
By GPRS wireless module remote monitoring transmitter, GPRS wireless module and platform be connected to serial ports, and give the power supply of GPRS wireless module by serial ports.
F) keyboard interface
The finger-board that adopts is seen " description of drawings " Fig. 4.
7, power supply interface
Transmitter shows the control part and adopts independently powering mode separately, is convenient to show the control part and works alone and be beneficial to control; The power supply that shows control comprises the power supply of various LCD display, directly uses 5V/12V.
12V power supply mainly provides the external control interface of platform, thus current requirements very little (＜100mA), select 500mA just enough fully.
The 5V power supply provides the main power supply of platform, and platform is considered 1A, LCD display 500mA; Select 3A just enough fully.
The power supply that power supply interface should take into full account platform and the combination of LCD display with separate, promptly LCD display is powered by platform interface, but will prevent that LCD display from disturbing and mutual interference mutually the power supply of platform.
Above-mentioned embodiment is relied on the embedded software of nucleus module of the present invention; " the message processing flow figure " of this software main program sees " description of drawings " Fig. 5.
Claims (3)
1. the intelligent monitoring in real time of digital TV transmitter comprehensive platform comprises optical signal power prosecution, optical receiver RF output and amplifies that prosecution, modulator Detection ﹠ Controling, automatic gain control AGC detect control, prime is amplified and final stage power amplifier detects the administrative center that control, main power source detects control, temperature and fan detection and control, communication transmission and manufacturing firm its transmitter of producing is carried out telemanagement and detection.
2. comprehensive platform is monitored in intellectuality as claimed in claim 1 in real time, it is characterized in that, its hardcore module has eight road A/D converters, and resource is abundant, complete function; The software that the present invention is embedded can carry out unified management to the monitoring comprehensive platform, dispatches various resources, coordinates various peripheral hardwares and interface; Various peripheral hardwares and interface software are all by modularized design; And:
A) software program of product is write by network interface and upgrades;
B) unit type of product can freely be revised;
C) power grade of product can freely be revised;
D) display screen of product and content can freely be revised;
E) the IP address of product can freely be revised;
F) possess remote monitoring functions such as " N+1 " control system.
3. comprehensive platform is monitored in intellectuality as claimed in claim 1 in real time, it is characterized in that, by data-processing interface, detection demonstration and control interface, communication interface and power supply interface, to operating state (comprising power output and reflection power, power amplifier temperature, supply power voltage and electric current, automatic AGC control etc.) the realization real-time intelligent monitoring of transmitter; And can carry out i.e. " N+1 " control of remote real-time monitoring, unattended operation and the switching of transmitter quick master-slave part.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625134A (en) * | 2012-03-07 | 2012-08-01 | 成都新光微波工程有限责任公司 | Intelligent monitoring comprehensive platform of N+1 digital television emission system |
| CN104301720A (en) * | 2014-10-30 | 2015-01-21 | 成都新光微波工程有限责任公司 | Controller of N+1 digital television transmitting device |
| CN104301721A (en) * | 2014-10-30 | 2015-01-21 | 成都新光微波工程有限责任公司 | Monitoring and management system of N+1 digital television transmitting device |
| CN105162476A (en) * | 2015-08-20 | 2015-12-16 | 牟丽 | Embedded automatic tuning control system of short wave transmitter |
| CN105824276A (en) * | 2016-05-24 | 2016-08-03 | 桂林市思奇通信设备有限公司 | Control system for remotely monitoring transmitter |
| CN112068057A (en) * | 2020-08-31 | 2020-12-11 | 中电科仪器仪表有限公司 | Self-adaptive calibration compensation method for accurate power display |
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| US20050265730A1 (en) * | 2003-06-13 | 2005-12-01 | Toshihiko Yasue | Optical transmission system, and trasmitter, receiver and signal level adjustment method for use therein |
| CN201557183U (en) * | 2009-11-16 | 2010-08-18 | 浙江传媒学院 | Embedded control system of broadcast TV transmitter |
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Patent Citations (3)
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| CN1396771A (en) * | 2002-08-21 | 2003-02-12 | 南京邮电学院 | Security monitor system for cable TV network |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102625134A (en) * | 2012-03-07 | 2012-08-01 | 成都新光微波工程有限责任公司 | Intelligent monitoring comprehensive platform of N+1 digital television emission system |
| CN104301720A (en) * | 2014-10-30 | 2015-01-21 | 成都新光微波工程有限责任公司 | Controller of N+1 digital television transmitting device |
| CN104301721A (en) * | 2014-10-30 | 2015-01-21 | 成都新光微波工程有限责任公司 | Monitoring and management system of N+1 digital television transmitting device |
| CN105162476A (en) * | 2015-08-20 | 2015-12-16 | 牟丽 | Embedded automatic tuning control system of short wave transmitter |
| CN105824276A (en) * | 2016-05-24 | 2016-08-03 | 桂林市思奇通信设备有限公司 | Control system for remotely monitoring transmitter |
| CN112068057A (en) * | 2020-08-31 | 2020-12-11 | 中电科仪器仪表有限公司 | Self-adaptive calibration compensation method for accurate power display |
| CN112068057B (en) * | 2020-08-31 | 2023-02-17 | 中电科思仪科技股份有限公司 | Self-adaptive calibration compensation method for accurate power display |
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Open date: 20110302 |