CN202918303U - Frequency modulation broadcasting signal receiving and measuring system - Google Patents
Frequency modulation broadcasting signal receiving and measuring system Download PDFInfo
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- CN202918303U CN202918303U CN2012205715882U CN201220571588U CN202918303U CN 202918303 U CN202918303 U CN 202918303U CN 2012205715882 U CN2012205715882 U CN 2012205715882U CN 201220571588 U CN201220571588 U CN 201220571588U CN 202918303 U CN202918303 U CN 202918303U
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Abstract
The present utility model discloses a frequency modulation broadcasting signal receiving and measuring system. The system comprises a plurality of FM receiving and measuring receivers arranged on a plurality of detection station points within the effective scope covered by FM signals emitted by an frequency modulation(FM) transmitter, and a monitoring terminal composed of computers, the FM receiving and measuring receivers and the frequency modulation(FM) transmitter are respectively connected with a mobile communication network, the mobile communication network and a system server are respectively connected with the internet, data sent by the FM receiving and measuring receivers is sent to the system server, and the monitoring terminal is connected with the internet to access the system server to monitor information collected by the FM receiving and measuring receivers and set and adjust parameters of the FM receiving and measuring receivers. Thus, positions, working statuses and other data of the FM receiving and measuring receivers can be completely displayed on a satellite map of a computer screen of the monitoring terminal, the working status of each station point of the FM covering network can be completely and visually reflected, and non-local remote and trans-regional real-time monitoring can be realized finally.
Description
Technical field
The utility model belongs to broadcast singal monitoring equipment technical field, is specifically related to a kind of remote supervision system of fm broadcast signal.
Background technology
Over past ten years, along with Chinese society and expanding economy, the FM(frequency modulation radio) broadcasting is subject to liking of the people day by day, no matter be emission frequency or its signal coverage rate of FM broadcasting, growth is by a relatively large margin arranged, its audience also listens to from the fixed movable type that develops into mobile phone, car of listening to of family, can say the FM(frequency modulation radio) broadcasting enter a new developing period.
For a long time, because the established one way propagation form of traditional broadcast television industry, make the technical quality of broadcasting can only set up and rely on the safeguard level to the transmitting system, indirectly by monitoring the transmitting terminal operating state of transmitting system, come the covering quality of reflected radio wireless signal, roughly judge the receiving terminal technical quality of audience's broadcast listening, thereby determined that broadcasting organization is difficult to understand and grasp directly, in time, exactly the auditory perception of mass audience's broadcast listening program, this is one and is perplexing for a long time the problem of broadcasting the scientific worker.
The utility model content
The purpose of this utility model is: the technical quality of the FM broadcasting that exists for prior art can only be set up and rely on not enough on the safeguard level of transmitting system, provide a kind of receiving terminal oppositely to monitor the fm broadcast signal of reviewing to transmitting terminal and receive examining system
For realizing the purpose of the utility model, be achieved by the following technical solutions: a kind of fm broadcast signal is received examining system, include many FM receipts survey receivers that the FM signal that is installed in the emission of FM frequency modulated transmitter covers a plurality of detection websites in the effective range, and the monitoring terminal that is consisted of by computer, FM receives the survey receiver and the FM frequency modulated transmitter accesses respectively wireless network, wireless network and system server access respectively the Internet network, FM receive to survey the data that receiver sends and reaches in the system server, and monitoring terminal is received FM by access Internet network access system server and surveyed information that receiver collects and monitor or FM is received the parameter of surveying receiver adjustment is set.By this system, both can allow in the monitoring point on-site administrative staff listen to the broadcast program sound of high-fidelity high definition, the stereo feature of FM that this machine can be received is again described signal: audio level, stereophonic signal, carrier signal etc., process and Real-time Collection and the data analysis of technical indicator, and with analysis result through CDMA or GSM Internet Transmission to the Internet webserver of assigned ip address, its data supply monitoring center of broadcasting organization simultaneously, program supervision department and technical staff share on the internet, the FM that is located at like this various places receives and surveys the receiver position, the data such as working condition all are presented on the satellite map of monitoring terminal computer screen, the working condition that comprehensively reflects intuitively each website in the FM nerve of a covering, finally reach place remote, the purpose of trans-regional Real-Time Monitoring.
As preferred version: described FM receives and surveys receiver and include microprocessor, and the tuning receiver module circuit of FM that electrically connects with the microprocessor corresponding port, TU tune level windows detecting circuit, the ST signal removes to disturb split circuit, dual-channel audio level Ultra-Low Speed sampling pretreatment, radio station beacon watermark identification circuit, the CDMA communication module, local high definition monitoring circuit, long-range single news road time-division is monitored multichannel circuit, the little control and treatment circuit of voice suggestion and power conversion and control circuit; The tuning receiver module circuit of described FM respectively with TU tune level windows detecting circuit, the ST signal removes to disturb split circuit, dual-channel audio level Ultra-Low Speed sampling pretreatment, radio station beacon watermark identification circuit, local high definition monitoring circuit electrically connects; Described long-range single news road time-division monitor the multichannel circuit also respectively with the CDMA communication module, the little control and treatment circuit of voice suggestion, local high definition monitoring circuit electrically connects; Described power conversion and control circuit also electrically connect with the CDMA communication module; Described FM receives the survey receiver and accesses described wireless network by the CDMA communication module.
As preferred version: also include the mobile monitor terminal that is connected with described wireless network.
Compared with prior art, the beneficial effects of the utility model are: survey receiver owing to utilizing FM to receive, signal in the FM overlay area is listened to monitoring, oppositely monitor the method for reviewing with receiving terminal to transmitting terminal, the quality of analytic explanation broadcasting transmitting emission system operating state, Monitoring Data reaches system server through the Internet network again by wireless network simultaneously, monitoring terminal reads FM from system server and receives the Monitoring Data of surveying receiver, Computer Analysis by monitoring terminal is processed, the working condition that comprehensively reflects intuitively each website in the FM nerve of a covering, finally reach place remote, the purpose of trans-regional Real-Time Monitoring.Ensured like this, well the quality of FM broadcasting receiving terminal.
Description of drawings
Fig. 1 is that system of the present utility model connects block diagram.
Fig. 2 is that FM receives the connection block diagram of surveying each functional circuit module of receiver.
Fig. 3 is the circuit theory diagrams that the ST signal removes to disturb split circuit.
Fig. 4 is the circuit theory diagrams of TU tune level windows detecting circuit.
Fig. 5 is the circuit theory diagrams of dual-channel audio level Ultra-Low Speed sampling pretreatment.
Fig. 6 is the circuit theory diagrams of long-range single news road time-division monitoring the multichannel circuit.
Fig. 7 is the circuit theory diagrams of local high definition monitoring circuit.
Fig. 8 is the circuit theory diagrams of power conversion and control circuit.
Embodiment
The below makes a detailed explanation embodiment of the present utility model with reference to the accompanying drawings.
Embodiment
Extremely shown in Figure 8 according to Fig. 1, the described a kind of fm broadcast signal of the present embodiment is received examining system, include many FM receipts survey receivers that the FM signal that is installed in the emission of FM frequency modulated transmitter covers a plurality of detection websites in the effective range, and the monitoring terminal that is consisted of by computer, FM receives the survey receiver and the FM frequency modulated transmitter accesses respectively wireless network, wireless network and system server access respectively the Internet network, FM receive to survey the data that receiver sends and reaches in the system server, and monitoring terminal is received FM by access Internet network access system server and surveyed information that receiver collects and monitor or FM is received the parameter of surveying receiver adjustment is set.
Described FM receives the survey receiver and includes microprocessor, and the tuning receiver module circuit of FM that electrically connects with the microprocessor corresponding port, TU tune level windows detecting circuit, the ST signal removes to disturb split circuit, dual-channel audio level Ultra-Low Speed sampling pretreatment, radio station beacon watermark identification circuit, the CDMA communication module, local high definition monitoring circuit, long-range single news road time-division is monitored multichannel circuit, the little control and treatment circuit of voice suggestion and power conversion and control circuit; The tuning receiver module circuit of described FM respectively with TU tune level windows detecting circuit, the ST signal removes to disturb split circuit, dual-channel audio level Ultra-Low Speed sampling pretreatment, radio station beacon watermark identification circuit, local high definition monitoring circuit electrically connects; Described long-range single news road time-division monitor the multichannel circuit also respectively with the CDMA communication module, the little control and treatment circuit of voice suggestion, local high definition monitoring circuit electrically connects; Described power conversion and control circuit also electrically connect with the CDMA communication module; Described FM receives the survey receiver and accesses described wireless network by the CDMA communication module.
Also include the mobile monitor terminal that is connected with described wireless network.
According to shown in Figure 1, the utility model is to receive the survey receiver by being arranged on the special-purpose FM that respectively launches in the station overlay area, audio level with monitored frequency, stereophonic signal, carrier signals etc. convert the switching value data of variation to, and by the CDMA communication module that is arranged in the FM receipts survey receiver, by wireless network the data of real-time change are sent back on the system server, then, access this system server that is connected on the Internet network by the monitoring terminal that is connected on the Internet network, listen to be located at various places FM broadcasting everywhere on the monitoring receiver position, the data such as working condition all are presented on the satellite map of computer screen of monitoring terminal, reflect intuitively the working condition of each website in the FM nerve of a covering comprehensively, finally reach place remote, the purpose of trans-regional Real-Time Monitoring.
When the monitoring personnel need to do real-time listening to certain working condition of launching website, can also be by the mode of dialing, put through the CDMA communication module that is arranged on certain FM receipts survey receiver in this website overlay area, implement remote online and listen to the FM broadcast singal, and then again judge the actual working state of this website.
Shown in Figure 2 is that key equipment FM of the present utility model receives the theory diagram of surveying receiver.Monitoring receiver is listened in this FM broadcasting, at first is that a band receives the high class receiver that parameter is analyzed, and it also by following circuit and technology, realizes the effective monitoring to the FM signal except 4 single-chip microcomputer collaborative works take the LPC2132 microprocessor as core.
The tuning receiver module circuit of FM: the tuning receiver module of FM is by the radio reception modular assembly that the MCU microprocessor microcontroller of radio reception special use+FM/AM tuned high frequency head consists of, and is responsible for the frequency of follow procedure setting the FM signal is carried out demodulation and produces audio signal, ST and TU signal.
TU tune level window observation circuit: as shown in Figure 4, in order effectively to identify and quantize the TU tune level of the tuning receiver module circuit output of FM, introduce two restriction window comparator circuits, in advance too high interfering carrier level, or the excessively low improper TU tune levels such as carrier noise level, excise filtration, after linear amplifier amplifies, send the A/D converter of microprocessor to carry out quantification treatment.
The ST signal removes to disturb split circuit: make discovery from observation, the stereo logic signal levels of ST from the tuning receiver module circuit output of FM, very easily be subject to receiving the variation of the condition of acceptance in place and surrounding environment and affect, cause the ST signal level to cut in and out, stable not, shake is lost, when serious even can to allow the people take for be that the work of FM FM transmitter system is undesired.In order to remove interference, relation between the normal FM emission of correct understanding and the shake ST, as shown in Figure 3, integrating circuit and hysteresis voltage comparator circuit have been introduced, ST signal to shake carries out first integral processing, the peak pulse duration of ST signal is changed, convert the variation of level to, then the ST signal that this level is changed, send into hysteresis loop comparator and analyze comparison, make the ST signal level allow to change in the hysteresis window of setting, this variation and shake all are considered as normal ST by circuit, and exceed the ST signal of this hysteresis window excessively long-time (by the software set of single-chip microcomputer), be considered to be generally that emission system causes, thereby reach the purpose of disturbing separation, the ST signal of locking and stable output offers microprocessor I/O mouth and samples.
Dual-channel audio level Ultra-Low Speed sampling pretreatment: if the audio level of dual track is directly sent into the A/D change-over circuit processing of microprocessor, the level data discreteness that can cause sampling and quantize is larger, the actual level that not too easily reflects current audio signals, if precise quantification certainly will occupy more cpu resource, increase operation intensity and the load of embedded software, reduce system's reliability of operation.To this, as shown in Figure 5, introduce a slice frequency modulation intermediate frequency process special chip, allow it be operated in 30HZ-15KHZ audio frequency response scope, and be connected into the logarithmic response circuit, and audio signal is carried out preliminary treatment, its output waveform is the envelope level of input audio frequency string, amplitude is directly proportional with incoming signal level, and this level is sent into the A/D change-over circuit of microprocessor and processed behind Hyblid Buffer Amplifier.At this moment, microprocessor can adopt the sample mode of Ultra-Low Speed as required, is relatively concentrated and signal level accurately.
Radio station beacon watermark identification circuit: CTCSS (Continuous Tone Controlled Squelch System), i.e. continuous speech control squelch system is commonly called as infrasonic frequency.This is a kind ofly will be attached in the voice-grade channel the together technology of transmission than low audio frequencies signal (67Hz-250.3Hz).Utilize this technology, the radio station beacon is formed watermark signal by digital coding, insert and transmitting from the audio system in broadcasting station, after the monitoring receiver receiving demodulation is listened in FM broadcasting, restore the beacon watermark, thereby judge the true and false of transmitter reradiated signal.The advantage of introducing this technology is, do not need to transform any technological system of FM broadcasting, just can reach watermarked identification beacon in voice-grade channel, with the purpose of the true and false of final differentiation radio signals.
CDMA communication module: for the data behind the FM receipts survey receiver monitoring analysis, send to timely and accurately on the system server of assigned ip address, introduced the LS100CT communication module based on the CDMA standard.The LS100CT module is supported China Telecom's wireless M2M service technique standard, is a kind of Internet of Things wireless data terminal, and it utilizes public honeycomb communication network to carry out the transmission exchange of wireless data.The LS100CT module adopts high performance technical grade 32 bit walk processors, technical grade wireless module, take embedded real-time operating system as the software support platform, provides RS232, RS485(or RS422) etc. the various communication interfaces standard.Utilize RS232 communication interface wherein, FM is listened to/monitoring receiver and the webserver link together, and realized the transparent transmission of Monitoring Data.
Local high definition monitoring circuit: BBE is that the sound technique of sound quality is listened in the significantly improvement that is used for that U.S. BBESound lnc company releases, can intelligently revise and recover the defective of the loss of signal in the audio system or phase deviation, the sound details of originally losing is reappeared, and its location sense, definition, bright sense are near on-the-spot former sound effective value.Its circuit as shown in Figure 7.
Long-range single news road time-division is monitored the multichannel circuit: because remote monitoring is that the voice channel of using communication module is realized, can only transmit simultaneously the voice content of single sound channel, and for the monitoring requirements of reality, except monitoring at any time the audio frequency of two sound channels of FM, also will be as required the abnormal conditions of FM signal, form with voice suggestion is pushed in this voice channel, for monitoring center or mobile telephone terminal, allow the supervisor in time understand the abnormal conditions of grasping monitoring point FM signal.Therefore, as shown in Figure 6, adopted the time-division monitoring, the multichannel listening mode that voice suggestion is preferential, adequate solution the single channel resource monitor the practical problem of multichannel content.
The little control and treatment circuit of voice suggestion: introduce WT588 dedicated voice Single Chip Microcomputer (SCM) system, FM abnormal signal situation, with the form of voice suggestion, hear the road by remote monitoring, automatically will monitor the news road and vacate to the voice suggestion alarm, the abnormal conditions of timely receiver being found report to the keeper.It is particularly suitable for more liquid technical attendant, accesses at any time receiver system with mobile phone, realizes round-the-clock management whenever and wherever possible.
Power conversion and control circuit: listen in the monitoring receiver in FM broadcasting, the CDMA communication module is set, the FM signal is received caused very important interference, especially by Power supply, the common mode disturbances that the links such as signal connection cause is outstanding especially.In order to resolve this problem, adopted multivoltage modularization efficient power converter technique, as shown in Figure 8,2 the efficient single-chip switching power supply controller of LM2577 boost modules have been introduced, operating frequency is 52KHz, by the peak pulse duration of automatic adjustment internal circuit, general+5V power conversion become 2 independently+the 12V power supply, and behind the common mode disturbances filter, difference supply audio frequency treatment circuit and CDMA communication module circuit.Simultaneously, on the grounding design and pcb board printing technology of circuit, strictly distinguish the character of various grounded circuits, classification is processed, and drops to crosstalking between grounded circuit minimum.
FM receives and surveys receiver is a high-quality FM receiver.By the foregoing circuit module is set, can listen to the sound details of radio programmes with it and distinguish, have preferably outside the auditory perception, can also effectively judge the FM frequency modulated transmitter to the transmission technology quality of program, bring into play the effect that it monitors monitoring.So, be very high to the tonequality requirement of this machine audio signal amplification treatment circuit.In local monitoring circuit, introduced BBE definition enhancing technology, to the audio signal after the FM demodulation, particularly HFS compensates recovery, improve its definition, improve the local overall tonequality of monitoring the loop, the supervisor is experienced from the subjective sense of hearing, more broadcast the tonequality level of front end near the radio station.This monitoring FM broadcast singal for specialty is very significant.
This FM receives and surveys many FM frequency time division multiplexing monitoring technology that receiver has used embedded software control in addition: select 32/16 ARM7TDMI-S that supports Embedded Trace
TMThe PLC2132 microprocessor chip of CPU adopts many FM frequency time division multiplexing monitoring technology and embedded Control software, to a plurality of monitoring target frequencies, in the mode of the monitoring of taking turns in order at times, realizes the function of machine multifrequency monitoring.
The functional circuit module design: according to the flow process that signal is processed, FM receives the survey receiver can divide 3 important steps, and the one, signal source forms link, and the 2nd, to the signal processing analysis link, the 3rd, analyze the transfer of data link.In order to simplify the processing main plate circuit structure, match flexibly functional module, make things convenient for the debugging maintenance of circuit, adopted the functional circuit module design, 12 functional circuits of three link are divided into 4 modules, are respectively: the tuning receiver module circuit module of FM, CTCSS beacon watermark demodulation module, main control module, the CDMA communication module.
FM receives and surveys receiver is the chief component that FM broadcasting covers the signal monitoring net, is the terminal equipment of the single or multiple monitoring frequency objects in monitoring point being received survey, analysis, report, can form FM monitoring network system in large scale with it.In order to alleviate the data processing pressure of the network operation, reduce the data traffic rate of network communication, improve the capability of fast response of network management personnel and FM broadcasting nerve of a covering technical attendant, effectively ensure the safe broadcast that FM broadcasting covers, adopted FM signal fault Real-Time Monitoring to report and submit technology, made FM receive the survey receiver network and connect in the long-term online situation, carried out the Trouble Report mechanism of " normally not reporting; unusually must report ", " hiding " is in separately monitoring point work for a long time.
Claims (3)
1. a fm broadcast signal is received examining system, it is characterized in that: include many FM receipts survey receivers that the FM signal that is installed in the emission of FM frequency modulated transmitter covers a plurality of detection websites in the effective range, and the monitoring terminal that is consisted of by computer, FM receives the survey receiver and the FM frequency modulated transmitter accesses respectively wireless network, wireless network and system server access respectively the Internet network, FM receive to survey the data that receiver sends and reaches in the system server, and monitoring terminal is received FM by access Internet network access system server and surveyed information that receiver collects and monitor or FM is received the parameter of surveying receiver adjustment is set.
2. fm broadcast signal according to claim 1 is received examining system, it is characterized in that: described FM receives the survey receiver and includes microprocessor, and the tuning receiver module circuit of FM that electrically connects with the microprocessor corresponding port, TU tune level windows detecting circuit, the ST signal removes to disturb split circuit, dual-channel audio level Ultra-Low Speed sampling pretreatment, radio station beacon watermark identification circuit, the CDMA communication module, local high definition monitoring circuit, long-range single news road time-division is monitored multichannel circuit, the little control and treatment circuit of voice suggestion and power conversion and control circuit; The tuning receiver module circuit of described FM respectively with TU tune level windows detecting circuit, the ST signal removes to disturb split circuit, dual-channel audio level Ultra-Low Speed sampling pretreatment, radio station beacon watermark identification circuit, local high definition monitoring circuit electrically connects; Described long-range single news road time-division monitor the multichannel circuit also respectively with the CDMA communication module, the little control and treatment circuit of voice suggestion, local high definition monitoring circuit electrically connects; Described power conversion and control circuit also electrically connect with the CDMA communication module; Described FM receives the survey receiver and accesses described wireless network by the CDMA communication module.
3. fm broadcast signal according to claim 1 is received examining system, it is characterized in that: also include the mobile monitor terminal that is connected with described wireless network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205715882U CN202918303U (en) | 2012-11-02 | 2012-11-02 | Frequency modulation broadcasting signal receiving and measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205715882U CN202918303U (en) | 2012-11-02 | 2012-11-02 | Frequency modulation broadcasting signal receiving and measuring system |
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| CN202918303U true CN202918303U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205715882U Withdrawn - After Issue CN202918303U (en) | 2012-11-02 | 2012-11-02 | Frequency modulation broadcasting signal receiving and measuring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102932075A (en) * | 2012-11-02 | 2013-02-13 | 丽水市广播电视总台 | Frequency modulation (FM) broadcasting signal receiving and monitoring system |
| CN108155913A (en) * | 2018-01-12 | 2018-06-12 | 福建飞通通讯科技股份有限公司 | FM signal squelch method, apparatus and system |
| CN111711502A (en) * | 2020-06-03 | 2020-09-25 | 广州辉群智能科技有限公司 | Broadcast monitoring method and broadcast system |
-
2012
- 2012-11-02 CN CN2012205715882U patent/CN202918303U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102932075A (en) * | 2012-11-02 | 2013-02-13 | 丽水市广播电视总台 | Frequency modulation (FM) broadcasting signal receiving and monitoring system |
| CN102932075B (en) * | 2012-11-02 | 2014-09-17 | 丽水市广播电视总台 | Frequency modulation (FM) broadcasting signal receiving and monitoring system |
| CN108155913A (en) * | 2018-01-12 | 2018-06-12 | 福建飞通通讯科技股份有限公司 | FM signal squelch method, apparatus and system |
| CN111711502A (en) * | 2020-06-03 | 2020-09-25 | 广州辉群智能科技有限公司 | Broadcast monitoring method and broadcast system |
| CN111711502B (en) * | 2020-06-03 | 2021-08-27 | 广州辉群智能科技有限公司 | Broadcast monitoring method and broadcast system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20140917 |
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| RGAV | Abandon patent right to avoid regrant |