CN2554884Y - Real-time intelligence monitoring alarm instrument for TV. signal - Google Patents
Real-time intelligence monitoring alarm instrument for TV. signal Download PDFInfo
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- CN2554884Y CN2554884Y CN 02240324 CN02240324U CN2554884Y CN 2554884 Y CN2554884 Y CN 2554884Y CN 02240324 CN02240324 CN 02240324 CN 02240324 U CN02240324 U CN 02240324U CN 2554884 Y CN2554884 Y CN 2554884Y
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Abstract
The utility model relates to a realtime intelligent monitoring and alarming instrument for TV signals, and consists of a branch distributor, an electronic tuning unit, a signal-separating and A / D module, a detector for in-off signals, an index detecting circuit, a detecting circuit for identity validation, a microprocessor, a tracking circuit for vision carrier frequency and an indicating circuit for alarming and operating state. The branch distributor divides TV RF signals into two channels. One channel of RF signals is conducted an index detection and identity identification by the electronic tuning unit, the signal-separating and A / D module, the detector for in-off signals, the index detecting circuit and the detecting circuit for identity validation. The other channel of RF signals is specially used by the tracking circuit for vision carrier frequency through the electronic tuning unit, and used for judging the offset of the channel video wave carrier frequency and transmitting the outcome to the microprocessor. The microprocessor sorts out, calculates and processes the outcome, transmits the outcome to a supervisory computer through a USB interface and receives the command from the supervisory computer to control each circuit and monitor a next channel. The instrument provides an interface for monitoring the long-range dispatching and satisfies the requirements of a web-based monitoring.
Description
Technical field
The utility model relates to a kind of real-time intelligent monitoring alarm instrument, refers to a kind of alarm of real-time intelligent monitoring TV signal quality index especially.
Background technology
At present, each big TV station mainly is to adopt the mode of manual observation subjective judgement to monitor by the television monitoring wall to the monitoring of video quality.The shortcoming of this monitoring mode is: 1, the monitoring to image has certain effect, and is still but very difficult to the sound monitoring of every suit program, and can not monitor simultaneously the sound of every programs, and channel is monitored one by one, and is very loaded down with trivial details.Also to utilize instrumentation regularly to measure one by one manually if the sound of program and image monitored simultaneously.Channel is many, and index is many, and the measurement that finish these routines is very time-consuming, does not also have the effect of the real-time monitoring of real meaning.2, all be to finish to test back classification of Data, statistics, the judgement of analyzing, exceed standard etc., have certain artificial subjective judgement and not scientific by tester oneself is manual.Though occurred on the market for alleviating the instrument of above-mentioned contradiction, but these instruments mainly concentrate in the monitoring that signal has or not (break-make), the electric index of the related physical of signal quality is not done comprehensive detection, can not real-time objective reflected signal quality index, also just can not fundamentally guarantee the service quality of cable television system.3, about the monitoring of TV signal safety (as illegal signals), traditional equipment and method all can't realize.
Summary of the invention
In view of the foregoing, main purpose of the present utility model provides a kind of automation and the intelligent monitoring alarm instrument that has both that can carry out many indexs on-line real time monitoring, comprehensive objective comprehensive judgement to video quality.
Another purpose of the present utility model provides a kind of intellectual monitoring alarm that can carry out the actual time safety monitoring to TV signal.When finding illegal signals invasion television system, can in time discern warning.
Another purpose of the present utility model provides a kind ofly can carry out the real-time intelligent monitoring alarm instrument that many indexs on-line real time monitoring, computer data analysis, statistic of classification, report printing and network are shared to video quality.
A purpose more of the present utility model provides a kind of novel service pattern of TV signal monitoring of networked control, and human observer that breaks traditions and monitoring point must be in the spatial limitation in same place.
For achieving the above object, the utility model is taked following design: a kind of TV signal real-time intelligent monitoring alarm instrument, and it is made of branch distributor, electronic tuning unit, Signal Separation and A/D module, signal break-make decision device, index testing circuit, identity legitimacy checking circuit, microprocessor, vision carrier frequency tracking circuit, alarm and operating state indicating circuit;
Described branch distributor mainly is that the TV RF signals that will modulate is divided into two-way, one the tunnel through electronic tuning unit, Signal Separation and A/D module, Continuity signal is offered the index testing circuit to signal break-make decision device and the identity legitimacy checking circuit carries out the detection of index and the judgement of identity, and with result transmission to microprocessor; Signal break-make decision device transfers to microprocessor with the signal open circuit conditions, and microprocessor is through alarm and the operating state indicating circuit is reported to the police and the indication of work at present state;
Described branch distributor is divided into another road with the TV RF signals that modulates, through electronic tuning unit as the special use of vision carrier frequency tracking circuit, the vision carrier frequency tracking circuit is judged the skew of current channel video carrier frequency, judged result is transferred to microprocessor;
Described microprocessor is put in order, after the computing, processing, the result is transferred to host computer or Industrial PC Computer by USB interface the data that receive; Simultaneously, receive the instruction that passes under host computer or the Industrial PC Computer again, each circuit such as indicating operating status or alarm and control electronic tuning unit detects succeeding channel.
Described demultiplexing circuit comprises that the TV signal of a special use extracts integrated chip synchronously; It handles the composite video baseband signal (CVBS) of electronic tuning unit output, obtains row, field sync signal HOUT, VOUT, sends in the described signal break-make decision device after suitable A/D conversion, shaping.
Described electronic tuning unit is provided with automatic gain control (AGC) output line.
Described index testing circuit comprises a field programmable logic array chip (FPGA) and a peripheral circuit thereof; Fpga chip utilizes its inner CPLD program to carry out the technology judgement, and it mainly finishes the control (comprising selection, sampling etc.) and the relevant simple signal processing of signal logic.
The audio signal of described electronic tuning unit output is input to sample circuit and carries out analog-to-digital conversion after amplifying circuit amplifies, the audio signal after the analog-to-digital conversion is admitted to host computer PC and makes Fourier transform (FFT) analyzing and processing to obtain the quality index of audio signal.
After described microprocessor receives data, put in order, computing, processing, and the result transferred to host computer or Industrial PC Computer by USB interface, host computer carries out comprehensive assessment and pattern exhibiting by dedicated computer software to testing result, and, make corresponding actuation of an alarm according to assessment result; Simultaneously, host computer is also by transmission control system order under the USB interface.
Described identity legitimacy testing circuit comprises that a teletext receives decoding chip, handle synchronously with composite video baseband signal (CVBS), row by (HOUT), field synchronization (VOUT) signal and blanking signal (BL) under the control of microprocessor MCU for this chip, obtain corresponding flyback data, and send into host computer by microprocessor MCU and handle.
The utility model is signals collecting to be combined with precautionary technology, intelligent control technology and computer technology, network technology with analytical technology, signals security and the real-time intelligent monitoring alarm instrument of new generation developed, it can realize the automation of video quality monitoring, for unattended operation provides possibility.The utility model not only provides the monitoring of signal break-make, the online auto monitoring of the multinomial physical electrical index of TV signal also is provided, traditional, numerous and diverse manual operations, subjective judgement become instrument is measured automatically, objective judgement, greatly alleviated operator on duty's labour intensity.In addition, the utility model also provides signals security means of identification and network remote controlled function, for the networking that realizes the TV signal monitoring provides the technology and equipment support.
Description of drawings
Fig. 1 is the utility model system configuration schematic diagram
Fig. 2 the utility model demultiplexing circuit physical circuit figure
Fig. 3 is the utility model index testing circuit physical circuit figure
Fig. 4 is the utility model sample circuit physical circuit figure
Fig. 5 is the utility model microprocessor and peripheral circuit physical circuit figure thereof
Fig. 6 is the utility model identity legitimacy testing circuit physical circuit figure
Embodiment
As shown in Figure 1, the utility model is by branch distributor 1, electronic tuning unit 2,8, Signal Separation and A/D module 3, signal break-make decision device 4, index testing circuit 5, identity legitimacy checking circuit 6, microprocessor 7, vision carrier frequency tracking circuit 9, alarm and operating state indicating circuit 10 constitute.
7 pairs of data that receive of microprocessor are put in order, after the computing, processing, the result is transferred to host computer or Industrial PC Computer 11 by USB interface; Simultaneously, receive the instruction that host computer or Industrial PC Computer pass for 11 times again, comprise that electronic tuning unit 2,8 is coordinated in indication of alarm and operating state and control and other functional circuits detect succeeding channel.In general, such monitoring channel is ask to monitor at the enterprising road wheel of whole channel table and promptly can be met the demands; As improving the real-time of monitoring especially, can increase monitoring channel, reduce training in rotation and meet the demands blanking time.
Operation principle of the present utility model is: receive cable TV radiofrequency signal and wireless television signal (needing special-purpose reception antenna); By branch distributor signal is divided into two-way, one the tunnel under the effect of special electronic tuning unit, obtain vision signal, audio signal, AGC and other coherent signal of needs, again after Signal Separation and A/D module, send into index testing circuit and identity legitimacy checking circuit respectively, index is carried out objective quantification detection and identity legitimacy judgement, and the result is sent into host computer or Industrial PC Computer by microprocessor MCU by a USB interface; Another road signal that branch distributor is divided into is sent into host computer or Industrial PC Computer by microprocessor MCU by a USB interface with the result equally behind electronic tuning unit, vision carrier frequency tracking circuit; Host computer carries out comprehensive assessment and pattern exhibiting by dedicated computer software to testing result, and according to assessment result, make corresponding actuation of an alarm, play warning sound, light corresponding indicator light etc. by warning and operating state indicating circuit, simultaneously standby in the monitoring result data-in storehouse.After the test of channel finished, host computer descended the teletype command reporting system to turn to monitoring to next channel immediately.So poll is implemented comprehensive monitoring management to every suit program in the television system.In addition, if network condition allows, native system is also accepted remote scheduling monitoring task.
Enter the input (the 20th pin of U2A chip) of demultiplexing circuit 3 as shown in Figure 2 from the composite video baseband signal (CVBS) of electronic tuning unit 2 outputs, extract the processing of special integrated chip (TDA4096) synchronously through TV signal, obtain row, field sync signal HOUT, VOUT, after suitable A/D conversion, shaping, send in the vision signal break-make decision device as shown in Figure 3.
Be input to FPGA (the chip U8 among Fig. 3 Fig. 3 from HOUT, the VOUT signal of demultiplexing circuit 3 output, model EMP7128) chip internal, fpga chip utilizes its inner CPLD program to count judgement, does not then report this signal interruption to MCU (microprocessor) when inside counting reaches set point at certain time intervals.FPGA shown in Figure 3 (field of line programmable logic array) chip and peripheral circuit thereof are the parts of index testing circuit, also be main logic and operation of the present utility model unit, it mainly finishes the control (comprising selection, sampling) and the relevant simple signal processing of signal logic.
Audio signal from electronic tuning unit output, the sample circuit that is input to as shown in Figure 4 after amplifying circuit amplifies carries out analog-to-digital conversion, and the audio signal after the analog-to-digital conversion is admitted to host computer PC and makes Fourier transform (FFT) analyzing and processing to obtain the quality index of audio signal.
Vision signal (V), audio signal (A), AGC signal and other reference signal by electronic tuning unit demodulation output, through behind aforesaid amplifying circuit, split circuit and the sample circuit, the synchronous head level that obtains, sound accompaniment amplitude, AGC and other reference signal numerical value are sent into microprocessor (MCU+USB:CYPRESS AN2131QC) as shown in Figure 5 after simple preliminary treatment is carried out in the FPGA the inside.After microprocessor and peripheral circuit thereof receive these data, put in order, computing, processing, and the result transferred to host computer or Industrial PC Computer by USB interface.Host computer by dedicated computer software table look-up, after the computing, correction, can obtain carrier level, sound carrier level, V/A, noise, carrier-to-noise ratio (C/N), vision carrier frequency skew, the differential gain (DG), the differential phase (DP) and the arbitrary channel level difference of video, adjacent channel level difference, system's slope etc.Host computer carries out comprehensive assessment and pattern exhibiting to these testing results, and according to assessment result, make corresponding actuation of an alarm, play warning sound, light corresponding indicator light etc. by warning and operating state indicating circuit, simultaneously standby in the monitoring result data-in storehouse.
Fig. 6 is the utility model identity legitimacy testing circuit.As shown in the figure, (HOUT), field synchronization (VOUT) signal and blanking signal (BL) are input among the teletext decoding chip UT1 (model SAA570X) synchronously the composite video baseband signal (CVBS) in early stage, row, under the control of microprocessor MCU, obtain corresponding flyback data, send into upper computer software by microprocessor MCU and handle.The identification signal that the utility model utilizes teletext reception decoding technique extraction front end to insert in the TV flyback is discerned.The utility model utilizes hardware-based cryptographic, can obtain very high reliable assurance on the safety problem of identification signal itself.
The utility model vision carrier frequency tracking circuit is mainly realized the judgement to current channel video carrier frequency skew, utilizes iic bus technology and related algorithm, and the carrier frequency shift measurement is reached in the industry standard ± requirement of 25KHZ.The side-play amount discerned of general electronic tuning unit is ± 31.25KHZ～± 50KHZ～± 62.5KHZ----, do not satisfy the resolution of rower ± 25KHZ.The utility model is by the algorithm of oneself exploitation, realize frequency deviation be identified in ± 12.5KHZ～± 25KHZ～± 31.25KHZ～± 37.5KHZ, satisfy the requirement of rower ± 25KHZ as much as possible.
The utility model microprocessor MCU mainly is responsible for the co-ordination between each functional circuit, collects related data simultaneously, is uploaded to host computer by USB interface, and host computer also sends a command to microprocessor and each circuit by USB interface.Host computer is mainly finished tasks such as the multifactorial evaluation, system parameters configuration, system data statistics, form, printing of reckoning (V/A, DP, DG, adjacent channel level difference, arbitrary channel level difference, system's slope etc.), the signal index of index of correlation, and network interface and remote scheduling control interface based on (TCP/IP) are provided simultaneously.
The above only is preferred embodiment of the present utility model, and protection range of the present utility model is not limited thereto.Anyly all belong within the utility model protection range based on the equivalent transformation on the technical solutions of the utility model.
Claims (7)
1, a kind of TV signal real-time intelligent monitoring alarm instrument is characterized in that: it is made of branch distributor, electronic tuning unit, Signal Separation and A/D module, signal break-make decision device, index testing circuit, identity legitimacy checking circuit, microprocessor, vision carrier frequency tracking circuit, alarm and operating state indicating circuit;
Described branch distributor mainly is that the TV RF signals that will modulate is divided into two-way, one the tunnel through electronic tuning unit, Signal Separation and A/D module, Continuity signal is offered the index testing circuit to signal break-make decision device and the identity legitimacy checking circuit carries out the detection of index and the judgement of identity, and with result transmission to microprocessor; Signal break-make decision device transfers to microprocessor with the signal open circuit conditions, and microprocessor is through alarm and the operating state indicating circuit is reported to the police and the indication of work at present state;
Described branch distributor is divided into another road with the TV RF signals that modulates, through electronic tuning unit as the special use of vision carrier frequency tracking circuit, the vision carrier frequency tracking circuit is judged the skew of current channel video carrier frequency, judged result is transferred to microprocessor;
Described microprocessor is put in order, after the computing, processing, the result is transferred to host computer or Industrial PC Computer by USB interface the data that receive; Simultaneously, receive the instruction that passes under host computer or the Industrial PC Computer again, each circuit such as indicating operating status or alarm and control electronic tuning unit detects succeeding channel.
2, TV signal real-time intelligent monitoring alarm instrument according to claim 1 is characterized in that: described demultiplexing circuit comprises that the TV signal of a special use extracts integrated chip synchronously; It handles the composite video baseband signal (CVBS) of electronic tuning unit output, obtains row, field sync signal HOUT, VOUT, sends in the described signal break-make decision device after suitable A/D conversion, shaping.
3, TV signal real-time intelligent monitoring alarm instrument according to claim 1 is characterized in that: described electronic tuning unit is provided with automatic gain control (AGC) output line.
4, TV signal real-time intelligent monitoring alarm instrument according to claim 1 is characterized in that: described index testing circuit comprises a field programmable logic array chip (FPGA) and a peripheral circuit thereof; Fpga chip utilizes its inner CPLD program to carry out the technology judgement, and it mainly finishes the control (comprising selection, sampling etc.) and the relevant simple signal processing of signal logic.
5, TV signal real-time intelligent monitoring alarm instrument according to claim 1, it is characterized in that: the audio signal of described electronic tuning unit output, be input to sample circuit and carry out analog-to-digital conversion after amplifying circuit amplifies, the audio signal after the analog-to-digital conversion is admitted to host computer PC and makes Fourier transform (FFT) analyzing and processing to obtain the quality index of audio signal.
6, TV signal real-time intelligent monitoring alarm instrument according to claim 1, it is characterized in that: after described microprocessor receives data, put in order, computing, processing, and the result transferred to host computer or Industrial PC Computer by USB interface, host computer carries out comprehensive assessment and pattern exhibiting by dedicated computer software to testing result, and, make corresponding actuation of an alarm according to assessment result; Simultaneously, host computer is also by transmission control system order under the USB interface.
7, TV signal real-time intelligent monitoring alarm instrument according to claim 1, it is characterized in that: described identity legitimacy testing circuit comprises that a teletext receives decoding chip, handle synchronously with composite video baseband signal (CVBS), row by (HOUT), field synchronization (VOUT) signal and blanking signal (BL) under the control of microprocessor MCU for this chip, obtain corresponding flyback data, and send into host computer by microprocessor MCU and handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240324 CN2554884Y (en) | 2002-07-10 | 2002-07-10 | Real-time intelligence monitoring alarm instrument for TV. signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240324 CN2554884Y (en) | 2002-07-10 | 2002-07-10 | Real-time intelligence monitoring alarm instrument for TV. signal |
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| Publication Number | Publication Date |
|---|---|
| CN2554884Y true CN2554884Y (en) | 2003-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240324 Expired - Fee Related CN2554884Y (en) | 2002-07-10 | 2002-07-10 | Real-time intelligence monitoring alarm instrument for TV. signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373956C (en) * | 2004-12-11 | 2008-03-05 | 海信集团有限公司 | Method for debugging PDP television chip program by using computer simulation |
| CN105763874A (en) * | 2016-04-22 | 2016-07-13 | 南京睿高宇信息科技有限公司 | Signal quality monitoring device of cable digital television radio frequency signal and monitoring method thereof |
| CN111565313A (en) * | 2020-07-15 | 2020-08-21 | 北京九州集诚创新技术有限公司 | Automatic monitoring system for broadcast television signals |
-
2002
- 2002-07-10 CN CN 02240324 patent/CN2554884Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373956C (en) * | 2004-12-11 | 2008-03-05 | 海信集团有限公司 | Method for debugging PDP television chip program by using computer simulation |
| CN105763874A (en) * | 2016-04-22 | 2016-07-13 | 南京睿高宇信息科技有限公司 | Signal quality monitoring device of cable digital television radio frequency signal and monitoring method thereof |
| CN105763874B (en) * | 2016-04-22 | 2018-02-02 | 南京睿高宇信息科技有限公司 | The signal quality monitoring device and monitoring method of RF Signal in Digital Cable TV System |
| CN111565313A (en) * | 2020-07-15 | 2020-08-21 | 北京九州集诚创新技术有限公司 | Automatic monitoring system for broadcast television signals |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |