CN101996474B

CN101996474B - Intelligent broadcast monitoring system

Info

Publication number: CN101996474B
Application number: CN2010102521024A
Authority: CN
Inventors: 王毓祺; 蒋国庆; 谢锟; 高永亮
Original assignee: SHANGHAI ORIENTAL PEARL CO Ltd
Current assignee: SHANGHAI ORIENTAL PEARL CO Ltd
Priority date: 2010-08-12
Filing date: 2010-08-12
Publication date: 2012-10-31
Anticipated expiration: 2030-08-12
Also published as: CN101996474A

Abstract

The invention discloses an intelligent broadcast monitoring system which comprises an audio signal subsystem, a signal acquisition subsystem, a broadcast monitoring subsystem, an alarm subsystem and a monitoring center subsystem, wherein the signal acquisition subsystem is used for acquiring a sampling signal sent by the audio signal subsystem, processing the received signal and then sending the processed signal to the broadcast monitoring subsystem and the alarm subsystem; the broadcast monitoring subsystem is used for monitoring the sampling signal acquired by the signal acquisition subsystem; when the alarm subsystem monitors an abnormal condition, the alarm subsystem sends out corresponding alarm information through a classified comparative alarm mode and simultaneously sends out an alarm signal to control the broadcast monitoring subsystem; and the monitoring center subsystem is used for monitoring the data of a transmitter and environment parameters. The invention better solves the problem of monitoring blind spots, expands the monitoring range of a machine room, provides automatic and intelligent solutions for many control operations, greatly improves the effect of the routine works of the machine room and provides a good auxiliary means for on-duty machines and maintainers.

Description

Intelligent Broadcast Control monitoring system

Technical field

The invention belongs to the electronic communication technology field, relate to a kind of monitoring system, relate in particular to a kind of intelligent Broadcast Control monitoring system.

Background technology

In recent years, along with the establishment of status, international metropolis, Shanghai, the programme content of broadcast transmitted is along with the diversification that citizen listen to demand is enriched rapidly with its special mission with internationalization, and the quality of the broadcast of its program is also increased with requiring greatly.The broadcast of these programs has become Shanghai area broad masses of the people's daily life and the indivisible ingredient of recreation.

Along with holding of the Olympic Games and World Expo, SARFT(The State Administration of Radio and Television) progressively improves each transmitting station anti-terrorism and safety requirements.The task of transmitting station is also more and more severeer, no matter is the time lengthening of launch mission, or the raising of safety requirements, and all technical requirement and the peopleware to transmitting station proposed higher target.

Under such context request, iff relies on traditional technical guarantee, is difficult to the assurance transmitting station and accomplishes so important and the large order task.To this, the applicant has designed a cover " intelligent Broadcast Control monitoring system ", has characteristics such as monitoring range is wide, system intelligent, simple and clearization of operation.

Summary of the invention

Technical matters to be solved by this invention is: a kind of intelligent Broadcast Control monitoring system is provided, and monitoring range is wider, system is more intelligent, operation is simpler and clearer.

For solving the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of intelligent Broadcast Control monitoring system is characterized in that said system comprises: sound signal subsystem, signals collecting subsystem, broadcast monitoring subsystem, warning subsystem, monitoring center's subsystem;

Said signals collecting subsystem is connected with the sound signal subsystem, the sampled signal that the audio frequency acquiring signaling subsystem is sent;

Said broadcast monitoring subsystem is connected with the signals collecting subsystem, in order to the sampled signal of monitor signal acquisition subsystem collection;

Said warning subsystem is connected with the signals collecting subsystem, in order to the sampled signal of monitor signal acquisition subsystem collection; Monitor when unusual through sub-category relatively type of alarm, send corresponding warning message, send alerting signal control broadcast monitoring subsystem simultaneously;

Said monitoring center subsystem comprises to transmitter monitoring in real time with to the real-time monitoring of environmental parameter.When monitoring that transmitter breaks down or environmental parameter when unusual, send alerting signal;

Said sound signal subsystem comprises the program source switch; The program source switch switches back program source signal through the output of output line road in order to realize the switching between the several program source; Said several program source comprises A road program source, B road program source at least, and said switch comprises at least one in order to switch the handover module of program source; Said switch comprises first handover module that is connected with A road program source, B road program source, and this first handover module comprises the automatic switchover module, reaches the manual switchover module; Said automatic switchover module is in order to automatic switchover A road program source, B road program source; Said manual switchover module is in order to manual switchover A road program source, B road program source; Between the said A road program source and first handover module, be provided with A road program source signal emergency wire jumper jack, between the B road program source and first handover module, be provided with B road program source signal emergency wire jumper jack; The emergent wire jumper jack of outer signal is set at place, output line road;

Said signals collecting subsystem comprises amplitude limiter circuit, voltage follower, calculus of differences circuit, amplifier, radiofrequency signal demodulating unit, sample circuit output unit; Said amplitude limiter circuit, voltage follower, calculus of differences circuit, amplifier connect successively, and the output signal of amplifier, radiofrequency signal demodulating unit is sent to the sample circuit output unit;

-said amplitude limiter circuit is in order to be limited to amplitude output signal in the scope of setting, and promptly after input voltage surpasses or is lower than a certain setting reference value, output voltage will be limited in clipping lever, and or else change with input voltage; Said amplitude limiter circuit comprises a clamping circuit, in order to the top of periodically variable waveform or bottom are remained on the DC level confirmed; Said clamping circuit comprises a clamp diode, the amplitude of audio input signal is no more than ± 12V;

-said voltage follower just is equivalent to the front stage circuits open circuit when output impedance is very low, just is equivalent to a constant pressure source to late-class circuit when input impedance exceeds setting value, and promptly output voltage does not receive the late-class circuit impedance influences; Said voltage follower makes between the forward and backward level circuit and is independent of each other;

-said calculus of differences circuit is in order to realize the conversion of balanced signal, unbalanced signal;

-said amplifier circuit sound intermediate frequency input potentiometer is placed the outer end of device panel, and, increase instrument connection on its next door, make things convenient for test sample signal output amplitude size through the oscillograph instrument, be used for monitoring signal simultaneously;

-said radiofrequency signal demodulating unit demodulates carrier signal and amplitude-modulated signal with the radiofrequency signal of input through coil transformation circle, supplies the back level to use;

Said broadcast monitoring subsystem comprises:

Control module is selected in-monitoring point, in order to accomplish the selection control to listening point through the dynamic scan pattern;

-frequency is selected control module, selects control module to link to each other with the monitoring point, through selecting the matrix form input pattern for use, with the mode of interrupt response the selection of a plurality of frequencies is controlled; Select control module to select the matrix form load module for use for the frequency of complicacy, the selection of each frequency is controlled with the mode of interrupt response; Select module to select for use 2 buttons and single-chip microcomputer to carry out dynamic scan for the node of simple each frequency, accomplish and select control;

-power-supply system selects control module and frequency to select control module to link to each other with the monitoring point respectively, in order to power supply;

The broadcast monitoring subsystem further comprises a keylock module, and behind the opening of device, equipment gets into original state automatically, and all setpoint frequencies are participated in wheel automatically and listened, and listening point is defaulted as high Zhou Tonglu, and wheel is listened and is spaced apart setting-up time; State LED lamp shows current which frequency participation monitoring that has, and charactron shows the frequency of listening when front-wheel; As to carry out single tin to a certain frequency, and utilize the mode of a keylock, only need directly to press " confirming " key, the single tin of current frequency of monitoring gets final product; As will prohibit a certain frequency and listen, utilize the mode of a keylock, only need directly to press " cancellation " key, prohibit and listen the current frequency of monitoring to get final product;

Said warning subsystem comprises sampling module, voice module, display module;

Be transferred to the CPU of each frequency after the data processing that-said sampling module will be sampled; Data processing and judgement are carried out in CPU inside in each frequency; Define the alarm free incident and take place, the CPU of the corresponding frequencies that breaks down sends alarm command to voice module and display module again;

In-said the voice module, the alarm command that CPU sends according to sampling module CPU broadcasts corresponding alarm sound through speech chip; Simultaneously through the interlock of RS232 serial ports realization with other alert detecting equipment; In addition, CPU reads the data of clock chip, differentiates whether will drive speech chip, exports normal voice reminder statement;

In-said the display module, the alarm command that CPU sends according to sampling module CPU shows the corresponding failure point through liquid crystal display; In addition, through the RS232 serial ports realize with the TC35I module communicate by letter realization remote monitoring function;

Monitoring center's subsystem is in order to comprise the real-time monitoring of " temperature, humidity, smog, sparking, infrared intrusion " parameter in the real-time monitoring that realizes transmitter state and the environment;

Said monitoring center subsystem comprises

-sparking alarm unit adopts the difference algorithm to judge the sparking warning, and the intensity of illumination that compares continuously in the some time section changes, if exceed predefined difference, when just illumination is undergone mutation, just thinks to report to the police; Be similar to the brightness gradual change that day and night substitutes and all belong to normal condition;

-infrared intrusion alarm unit utilizes 2 or 2 above infrared ray sensor monitoring illegal invasions, when having monitored illegal invasion simultaneously, sends alerting signal to single-chip microcomputer, and intrusion alarm is thought by single-chip microcomputer side, sends warning message;

-transmitter monitoring equipment unit utilizes a plurality of portable probes to monitoring in real time on its a plurality of fault suspicious points, in case transmitter emerged in operation fault, the transmitter monitoring equipment just can directly capture the related data of suspicious points.

A kind of intelligent Broadcast Control monitoring system, said intelligent Broadcast Control monitoring system comprises the signals collecting subsystem; Said signals collecting subsystem is connected the sampled signal that the audio frequency acquiring signaling subsystem is sent with sound signal subsystem, broadcast monitoring subsystem, warning subsystem respectively;

Said signals collecting subsystem comprises amplitude limiter circuit, voltage follower, calculus of differences circuit, amplifier, radiofrequency signal demodulating unit, sample circuit output unit; Said amplitude limiter circuit, voltage follower, calculus of differences circuit, amplifier connect successively, and the output signal of amplifier, radiofrequency signal demodulating unit is sent to the sample circuit output unit.

As a kind of preferred version of the present invention, said amplitude limiter circuit is in order to be limited to amplitude output signal in the scope of setting, and promptly after input voltage exceeds a certain setting term of reference, output voltage will be limited in clipping lever, and or else change with input voltage; Said amplitude limiter circuit comprises a clamping circuit, in order to the top of periodically variable waveform or bottom are remained on the DC level confirmed; Said clamping circuit comprises a clamp diode, the amplitude of audio input signal is no more than ± 12V;

Said voltage follower just is equivalent to the front stage circuits open circuit when output impedance is very low, just is equivalent to a constant pressure source to late-class circuit when input impedance exceeds setting value, and promptly output voltage does not receive the late-class circuit impedance influences; Said voltage follower makes between the forward and backward level circuit and is independent of each other;

Said calculus of differences circuit is in order to realize the conversion of balanced signal, unbalanced signal;

Said amplifier circuit sound intermediate frequency input potentiometer is placed the outer end of device panel, and, increase instrument connection, make things convenient for test sample signal output amplitude size, be used for monitoring signal simultaneously through the oscillograph instrument on its next door;

Said radiofrequency signal demodulating unit demodulates carrier signal and amplitude-modulated signal with the radiofrequency signal of input through coil transformation circle, supplies the back level to use.

As a kind of preferred version of the present invention, said intelligent Broadcast Control monitoring system further comprises the sound signal subsystem;

Said sound signal subsystem comprises the program source switch; The program source switch switches back program source signal through the output of output line road in order to realize the switching between the several program source;

Said several program source comprises A road program source, B road program source at least, and said switch comprises at least one in order to switch the handover module of program source;

Said switch comprises first handover module that is connected with A road program source, B road program source, and this first handover module comprises the automatic switchover module, reaches the manual switchover module; Said automatic switchover module is in order to automatic switchover A road program source, B road program source; Said manual switchover module is in order to manual switchover A road program source, B road program source; Between the said A road program source and first handover module, be provided with A road program source signal emergency wire jumper jack, between the B road program source and first handover module, be provided with B road program source signal emergency wire jumper jack; The emergent wire jumper jack of outer signal is set at place, output line road.

As a kind of preferred version of the present invention, said intelligent Broadcast Control monitoring system further comprises the broadcast monitoring subsystem, and said broadcast monitoring subsystem comprises:

-frequency is selected control module, selects control module to link to each other with the monitoring point, through selecting the matrix form input pattern for use, with the mode of interrupt response the selection of a plurality of frequencies is controlled;

-power-supply system selects control module and frequency to select control module to link to each other with the monitoring point respectively, in order to power supply.

As a kind of preferred version of the present invention, said frequency selects control module through selecting the matrix form input pattern for use, with the mode of interrupt response the selection of a plurality of frequencies is controlled; Select control module to select the matrix form load module for use for the frequency of complicacy, the selection of each frequency is controlled with the mode of interrupt response; Select module to select for use several buttons and single-chip microcomputer to carry out dynamic scan for the node of simple each frequency, accomplish and select control.

As a kind of preferred version of the present invention, said monitoring point selects control module to comprise:

Monitoring point selection key load module is selected control through adopting n button to m monitoring point; Wherein, n >=1, m >=1;

Single-chip microcomputer is selected in the monitoring point, and one side obtains the monitoring point through the dynamic scan to n button input signal and selects signal, and control i individual 4 selects the output of 1 analog switch to choose the signal of k frequency of monitoring point; Export control signal on the other hand and control a monitoring point selection result state display module; Exporting one road listening state signal simultaneously selects control module to select situation in order to the current monitoring point of announcement to frequency; Wherein, i >=1, k >=1;

Monitoring point selection result state display module is selected the control signal of single-chip microcomputer output in order to receive the monitoring point, the LED lamp is controlled, thereby shown the current state of choosing the monitoring point.

As a kind of preferred version of the present invention, said frequency selects control module to comprise:

Frequency is selected load module, through adopting 4 * 3 matrix form load module, the selection control of k frequency of completion;

Frequency is selected single-chip microcomputer; Select the output signal of load module and the road listening state signal that single-chip microcomputer output is selected in said monitoring point through receive frequency; Output selected frequencies output signal and selected frequencies charactron shows signal are exported control signal simultaneously and are controlled current participation frequency state indicating module;

8 select 1 analog switch, through the control of said selected frequencies output signal, export the signal of a certain selected frequencies in the signal of said k frequency choosing the monitoring point;

Charactron display process module in order to receive said selected frequencies charactron shows signal, shows through the frequency of shift register driving charactron to current selection;

Current participation frequency state indicating module is selected the control signal of single-chip microcomputer output in order to receive said frequency, the LED lamp is controlled, thereby shown current which frequency participation monitoring that has.

As a kind of preferred version of the present invention, said intelligent Broadcast Control monitoring system further comprises the warning subsystem, and said warning subsystem comprises sampling module, voice module, display module;

In-said the display module, the alarm command that CPU sends according to sampling module CPU shows the corresponding failure point through liquid crystal display; In addition, through the RS232 serial ports realize with the TC35I module communicate by letter realization remote monitoring function.

As a kind of preferred version of the present invention, said intelligent Broadcast Control monitoring system further comprises monitoring center's subsystem, and monitoring center's subsystem is in order to comprise the real-time monitoring of " temperature; humidity; smog, sparking, infrared intrusion " parameter in the real-time monitoring that realizes transmitter state and the environment.Said monitoring center subsystem comprises transmitter data monitoring and environmental parameter monitoring.

As a kind of preferred version of the present invention, said warning subsystem further comprises:

Sub-category relatively alarm unit is in order to relatively judging the false alarm of avoiding the single node sampling error to cause after each sampled point is sampled simultaneously in the path;

The interlink warning unit; When phonetic alarm collects data from signal picker; When pointing out through sending alarm voice after judging; Send the signal of concrete trouble spot through the RS232 communication interface on the phonetic alarm to the broadcast monitoring equipment, the broadcast monitoring equipment that receives this signal can be locked in listening point on the trouble spot automatically, strengthens monitoring;

As a kind of preferred version of the present invention, said monitoring center subsystem further comprises:

The sparking alarm unit adopts the difference algorithm to judge the sparking warning, and the intensity of illumination that compares continuously in the some time section changes, if exceed predefined difference, when just illumination is undergone mutation, just thinks to report to the police; Be similar to the brightness gradual change that day and night substitutes and all belong to normal condition.

The infrared intrusion alarm unit utilizes 2 or 2 above infrared ray sensor monitoring illegal invasions, when having monitored illegal invasion simultaneously, sends alerting signal to single-chip microcomputer, and intrusion alarm is thought by single-chip microcomputer side, sends warning message.

Transmitter monitoring equipment unit utilizes a plurality of portable probes to monitoring in real time on its a plurality of fault suspicious points, in case transmitter emerged in operation fault, the transmitter monitoring equipment just can directly capture the related data of suspicious points.

Beneficial effect of the present invention is: the intelligent Broadcast Control monitoring system that the present invention proposes; Can solve the monitoring blind spot well, enlarge the monitoring range of machine room, many control operations; Robotization all is provided; Intelligentized solution has significantly improved the effect of machine room routine work, for value machine and maintainer provide good supplementary means.

Description of drawings

Fig. 1 is the composition synoptic diagram of system of the present invention.

Fig. 2 is the composition synoptic diagram of program source switch.

Fig. 3 is the composition synoptic diagram of signals collecting subsystem.

Fig. 4 is the composition synoptic diagram of broadcast monitoring subsystem.

Fig. 5 is the composition synoptic diagram of warning subsystem.

Fig. 6 is the composition synoptic diagram of the sampling module of warning subsystem.

Fig. 7 is the composition synoptic diagram of the audio alert module of warning subsystem.

Fig. 8 is the synoptic diagram of phonetic alarm interlink warning.

Fig. 9 is the composition synoptic diagram of the display module of warning subsystem.

Figure 10 selects control module matrix input synoptic diagram for frequency.

Embodiment

Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.

Embodiment one

See also Fig. 1, the present invention has disclosed a kind of intelligent Broadcast Control monitoring system, and said system comprises: sound signal subsystem 1, signals collecting subsystem 2, broadcast monitoring subsystem 3, warning subsystem 4, monitoring center's subsystem.

Said signals collecting subsystem 2 respectively with sound signal subsystem 1, broadcast monitoring subsystem 3, warning subsystem 4 connects, the sampled signal that audio frequency acquiring signaling subsystem 1 is sent; Said broadcast monitoring subsystem 3 is connected with signals collecting subsystem 2, in order to the sampled signal of monitor signal acquisition subsystem 2 collections; Said warning subsystem 4 is connected with broadcast monitoring subsystem 3, at said broadcast monitoring subsystem 3

Monitor when unusual through sub-category relatively type of alarm, send corresponding warning message, send alerting signal control broadcast monitoring subsystem 4 simultaneously.Said monitoring center subsystem comprises transmitter data monitoring and environmental parameter monitoring.

Each subsystem is below described respectively.

[sound signal subsystem]

Said sound signal subsystem 1 comprises program source switch, automatic signal attenuator.

The program source switch switches back program source signal through the output of output line road in order to realize the switching between the several program source; Said several program source comprises A road program source, B road program source at least, and said switch comprises at least one in order to switch the handover module of program source; Said switch comprises first handover module that is connected with A road program source, B road program source, and this first handover module comprises the automatic switchover module, reaches the manual switchover module; Said automatic switchover module is in order to automatic switchover A road program source, B road program source; Said manual switchover module is in order to manual switchover A road program source, B road program source; Between the said A road program source and first handover module, be provided with A road program source signal emergency wire jumper jack, between the B road program source and first handover module, be provided with B road program source signal emergency wire jumper jack; The emergent wire jumper jack of outer signal is set at place, output line road.

The automatic signal attenuator leads directly in order to realize automatic decay, outage.

[signals collecting subsystem]

Said signals collecting subsystem 2 comprises amplitude limiter circuit, voltage follower, calculus of differences circuit, amplifier, radiofrequency signal demodulating unit, sample circuit output unit; Said amplitude limiter circuit, voltage follower, calculus of differences circuit, amplifier connect successively, and the output signal of amplifier, radiofrequency signal demodulating unit is sent to the sample circuit output unit.

Said amplitude limiter circuit is in order to be limited to amplitude output signal in the scope of setting, and promptly after input voltage exceeds a certain setting term of reference, output voltage will be limited in clipping lever, and or else change with input voltage; Said amplitude limiter circuit comprises a clamping circuit, in order to the top of periodically variable waveform or bottom are remained on the DC level confirmed; Said clamping circuit comprises a clamp diode, the amplitude of audio input signal is no more than ± 12V.

Said voltage follower, just is equivalent to the front stage circuits open circuit when output impedance is very low, just is equivalent to a constant pressure source to late-class circuit when very high (exceeding setting value) in input impedance, and promptly output voltage does not receive the late-class circuit impedance influences; Said voltage follower makes between the forward and backward level circuit and is independent of each other.

Said calculus of differences circuit is in order to realize the conversion of balanced signal, unbalanced signal.

Said amplifier circuit sound intermediate frequency input potentiometer is placed the outer end of device panel, and, increase instrument connection, make things convenient for test sample signal output amplitude size, be used for monitoring signal simultaneously through the oscillograph instrument on its next door.

[broadcast monitoring subsystem]

In the present embodiment, said broadcast monitoring subsystem in order to realize that voice-frequency channel is selected to monitor, the wheel of 8 frequencies of each path is listened, single tin, prohibit listen, with audio alert equipment linkage, matrix keyboard input.

See also Fig. 4, said broadcast monitoring subsystem comprises: the monitoring point selects control module, frequency to select control module, power-supply system.The monitoring point selects control module in order to accomplish the selection control to listening point through the dynamic scan pattern.Frequency selects control module and monitoring point to select control module to link to each other, and through selecting the matrix form input pattern for use, with the mode of interrupt response the selection of a plurality of frequencies is controlled.Power-supply system selects control module and frequency to select control module to link to each other with the monitoring point respectively, in order to power supply.

Said monitoring point selects control module to comprise:

-monitoring point selection key load module is selected control through adopting the individual button of n (n >=1) to the individual monitoring point of m (m >=1);

Single-chip microcomputer is selected in-monitoring point, obtains the monitoring point through the dynamic scan to n button input signal on the one hand and selects signal, and control i (i >=1) individual 4 selects the output of 1 analog switch to choose the signal of the individual frequency of k (k >=1) of monitoring point; Export control signal on the other hand and control a monitoring point selection result state display module; Exporting one road listening state signal simultaneously selects control module to select situation in order to the current monitoring point of announcement to frequency;

-monitoring point selection result state display module is selected the control signal of single-chip microcomputer output in order to receive the monitoring point, the LED lamp is controlled, thereby shown the current state of choosing the monitoring point.

Said frequency selects control module to comprise:

-frequency is selected load module, through adopting 4 * 3 matrix form load module, the selection control of k frequency of completion;

-frequency is selected single-chip microcomputer; Select the output signal of load module and the road listening state signal that single-chip microcomputer output is selected in said monitoring point through receive frequency; Output selected frequencies output signal and selected frequencies charactron shows signal are exported control signal simultaneously and are controlled current participation frequency state indicating module;

-8 select 1 analog switch, through the control of said selected frequencies output signal, export the signal of a certain selected frequencies in the signal of said k frequency choosing the monitoring point;

-charactron display process module in order to receive said selected frequencies charactron shows signal, shows through the frequency of shift register driving charactron to current selection;

-current participation frequency state indicating module is selected the control signal of single-chip microcomputer output in order to receive said frequency, the LED lamp is controlled, thereby shown current which frequency participation monitoring that has.

In the present embodiment, frequency selects control module in fact will accomplish 8 frequencies, 3 signal node of each frequency, and the selection of totally 24 road signals control sees also Figure 10.Figure 10 has showed the matrix form input mode more intuitively.How realizing the suitable human-computer conversational mode of this 24 road signal, is the big difficult point in this design.

After taking all factors into consideration, the mode that this equipment (frequency selection control module) has adopted the load module of matrix form to combine with the dynamic scan load module.Select module to select the matrix form load module for use for comparatively complicated frequency, the selection of 8 frequencies is controlled with the mode of interrupt response.Select module to select for use 2 buttons and single-chip microcomputer to carry out dynamic scan for the node of comparatively simple each frequency, accomplish and select control.

Its principle and matrix keyboard are somewhat similar, and at first 3 of each frequency of single-chip microcomputer dynamic scan nodes select signal to confirm specifically will detect which signaling point of which frequency according to frequency then.

The broadcast monitoring subsystem further comprises a keylock module.Behind the opening of device, equipment gets into original state automatically, and all setpoint frequencies are participated in wheel automatically and listened, and listening point is defaulted as high Zhou Tonglu, and wheel is listened and is spaced apart " 20 " second.State LED lamp shows current which frequency participation monitoring that has, and charactron shows the frequency of listening when front-wheel.As to carry out single tin to a certain frequency, and utilize the mode of a keylock, only need directly to press " confirming " key, the single tin of current frequency of monitoring gets final product.As will prohibit a certain frequency and listen, utilize the mode of a keylock, only need directly to press " cancellation " key, prohibit and listen the current frequency of monitoring to get final product.

[warning subsystem]

See also Fig. 5, said warning subsystem comprises sampling module, voice module, display module.

Be transferred to the CPU of each frequency after the data processing that said sampling module will be sampled; Data processing and judgement are carried out in CPU inside in each frequency; Define the alarm free incident and take place, the CPU of the corresponding frequencies that breaks down sends alarm command to voice module and display module again.

See also Fig. 6, in the present embodiment, prime sampling section circuit is mainly accomplished through chip TL082.Signal through half-wave rectification prevents the equipment that the alarm fault effects is gathered through voltage follower; Then amplify sampled signal through amplifier; Because the signal amplitude of each frequency, each collection point is different; Therefore need to amplify, each sampled signal amplitude is reached unanimity to various signals.Through the low-pass filter high frequency noise filtering that it is entrained, through clamping protective circuit the signal of gathering is carried out amplitude limit at last, its objective is and damage stages of digital integrated circuit after other for the signal peak-to-peak value that prevents to collect is too big.

After above signal Processing, just can the signal after handling be sent into the A/D modular converter and make subsequent treatment.It is AD0809 that 8 ADC is selected in ensuing analog-to-digital conversion, and ADC0809 is the cmos component that has the compatible steering logic of 8 A/D converters, No. 8 multi-way switchs and microprocessor.It is a successive approximation type a/d converter, can with the single-chip microcomputer direct interface.

The 89C51 single-chip microcomputer that the employed CPU control chip of present embodiment is an atmel corp.The a series of intelligent functions that data processing through this single-chip microcomputer and control in real time realize in the preceding text being mentioned.Data after analog to digital conversion is accomplished are sent into the ATMEL single-chip microcomputer and are carried out data processing, and this link mainly is that software is accomplished, and also is the key of total system, and the signal that CPU sends here according to the A/D modular converter through the CPU written program, is judged the state that draws each frequency.Send command adapted thereto to voice module and display module.Because the transient change of sound signal is comparatively complicated, can produce very high False Rate through simple manner of comparison, therefore can improve the accuracy rate of warning greatly through the software algorithm that designs to sound signal.

It then is that parallel port mode of operation through the 89C51 single-chip microcomputer realizes that the serial ports mode of operation of utilizing the 89C51 single-chip microcomputer connects getting in touch of sampling module and voice module with sampling module and display module.

In the said voice module, the alarm command that CPU sends according to sampling module CPU broadcasts corresponding alarm sound through speech chip; Simultaneously through the interlock of RS232 serial ports realization with other alert detecting equipment; In addition, CPU reads the data of clock chip, differentiates whether will drive speech chip, exports normal voice reminder statement.

See also Fig. 7, in the present embodiment, the function of audio alert module is following:

1, voice suggestion power up function

Its implementation: CPU reads the data of clock chip (DS1302), differentiates whether will drive speech chip ISD4002, output voice reminder statement.

2, audio alert function

Its implementation is that voice module CPU reads the data mode that sampling module CPU is sent here through the data line coding, judges the residing state of each voice-frequency channel, thereby drives speech chip, output alarm statement.

Truth table is as shown in table 1:

Table 1

Power amplifier module uses LM386, and the voice output that speech chip ISD4002 will record in advance removes to drive loudspeaker to LM386 by LM386.

3, interlink warning function

As shown in Figure 8: the single-chip microcomputer by the voice module in the phonetic alarm selects single-chip microcomputer and monitoring point to select single-chip microcomputer to transmit failure message as the frequency of main frame in the audio system audiomonitor, and monitor the locking trouble spot.

Preferably, said warning subsystem further comprises: sub-category relatively alarm unit, interlink warning unit.

Sub-category relatively alarm unit: in order to relatively judging after each sampled point is sampled simultaneously in the path, the false alarm that can avoid the single node sampling error to cause increases the degree of stability of system.

Interlink warning unit: when phonetic alarm collects data from signal picker; When pointing out through sending alarm voice after judging; Send the signal of concrete trouble spot through the RS232 communication interface on the phonetic alarm to the broadcast monitoring equipment; The broadcast monitoring equipment that receives this signal can be locked in listening point on the trouble spot automatically, strengthens monitoring.

See also Fig. 9, in the present embodiment, in the said display module, the alarm command that CPU sends according to sampling module CPU shows the corresponding failure point through liquid crystal display; In addition, through the RS232 serial ports realize with the TC35I module communicate by letter realization remote monitoring function.

The function of display module

1, keyboard control function:

His implementation: single-chip microcomputer uses dynamic scan mode to detect the operation of button.Keyboard has 6 buttons, is respectively: upper and lower, left and right, definite, cancellation.

2, Presentation Function

Its implementation is that display module CPU reads the data mode that sampling module CPU is sent here through RS232, judges the residing state of each voice-frequency channel, thereby shows each frequency running status through having 128 of Chinese word library * 64 a formal liquid crystal display.When fault alarm, locking shows fault.

3, long-range prison transport module

Realize and the communicating by letter of GSM transport module (TC35I) through RS232.

4, serial ports expansion module

Because common single-chip microcomputer has only a serial ports, and here take orders and remote transmission all will be used serial ports, resource is nervous, so need to expand serial ports quantity through chip SP3539.

SP3539 adopts brand-new framework can the original UART Universal Asynchronous Receiver Transmitters of any 8～32 bit CPUs (serial ports) be expanded to the full duplex substring mouth that 5 fully independent and each substring mouth baud rates, odd even effect mode, Frame length all can independently be provided with; SP3539 can let common single serial ports single-chip microcomputer easily realize all functions of standard 5 serial ports single-chip microcomputers.

The target of above-mentioned warning subsystem is that a certain frequency signal is sampled on the unlike signal node, handles these samplings then and next signal, finally determines having or not of these signals.The foundation of its differentiation remains the comparison diagnostic method.Yet the actual result who uses is unsatisfactory.Trace it to its cause the cause of phase differential between the two paths of signals that still compares.With respect to program source automatic switchover controller; Phase differential between the two paths of signals here is more serious; Because in the phonetic alarm, each sampled point of same frequency signal is separated by far away, so in the phonetic alarm; Phase differential is bigger between the signal that compares, and need take other means to remedy the erroneous judgement that this error is brought.The method that present embodiment adopts is: increase sampling number, prolong judgement time, drop to minimum with the probability of this wrong report.

[monitoring center's subsystem]

Said monitoring center subsystem comprises to transmitter monitoring in real time with to the real-time monitoring of environment.When monitoring that transmitter breaks down or environmental parameter when unusual, send alerting signal

The transmitter monitoring equipment utilizes embedded system at ordinary times to 8 analog quantitys on the transmitter sampling plate, and (analog quantity comprises 16 switching values: forward power sampling, backward power sampling; The high-frequency drive sampling ,-140V sampling ,-18V sampling; + 18V sampling ,+12V sampling ,+24V sampling.Switching value comprises: the remote state control signal, and the manual state signal, the SBR signal broadcasts status signal; Low-power is reported to the police, and AC power is reported to the police, chain warning, and low-tension supply is reported to the police; Primary power is reported to the police, and high frequency promotes to report to the police, and modulation promotes to report to the police, and power amplifier is reported to the police; G-load is reported to the police, and broadcasts fault alarm, the standby host enabling signal; The standby host locking signal) monitors in real time, through 485 buses data are sent out to monitoring center simultaneously, be convenient to minder person just can understand transmitter in real time in the pulpit running status.When transmitter breaks down; Which type fault what monitoring center can in time show the transmitter generation is; And information is sent to other mobile devices through the GSM network; Make not in the malfunction of the timely and convenient understanding machine of the business backbone of working site, make things convenient for it to carry out remote command, fix a breakdown.

When transmitter breaks down,, cause that the reason of same fault is diversified really though indicating fault is arranged.Because the stationary monitoring point of transmitter monitoring equipment is just monitored some main monitoring points of transmitter, do not comprise whole monitoring informations of transmitter in addition.When faults such as transmitter takes place that similar power wink falls; The data that these main monitoring points all can not capture malfunction or these monitoring points in real time are not to cause cause faults, so the maintainer is difficult to the origination point of failure judgement from these information.The maintainer can only slowly seek the reason that causes fault through drawing, and investigation is fixed a breakdown then one by one.This will spend great amount of time and energy, also be unfavorable for safe broadcast.The malfunction monitoring subsidiary function can well help the maintainer to find out the trouble spot; Shorten the time of fixing a breakdown greatly; The maintainer can utilize, and a plurality of " portable probes " are connected to its combination in any on a plurality of suspicious points and monitor in real time; When transmitter is in service when breaking down once more, the transmitter monitoring equipment just can directly capture the related data of suspicious points.Be convenient to the maintainer and carry out data relatively, fix a breakdown.This instrument moves flexibly, and is easy and simple to handle, and can realize the seizure of multiple spot data in real time, helps the staff to dwindle monitoring range, and the investigation suspicious points finds the trouble spot fast.

Preferably, said monitoring center subsystem further comprises: sparking alarm unit, infrared intrusion alarm unit.

The sparking alarm unit: the algorithm of the warning of striking sparks is relatively more novel: because a day accent chamber is unattended, so the intensity of illumination of day and night alters a great deal, can not do optical sensor with common sun valve, common algorithm can't capture warning.We have adopted the difference algorithm to judge the sparking warning, are exactly the relatively interior intensity of illumination variation of some time section continuously, if exceed predefined difference, when just illumination is undergone mutation, just think to report to the police.Other are similar to the brightness gradual change that day and night substitutes and all belong to normal condition.

The infrared intrusion alarm unit utilizes 2 or 2 above infrared ray sensor monitoring illegal invasions, when having monitored illegal invasion simultaneously, sends alerting signal to single-chip microcomputer, and intrusion alarm is thought by single-chip microcomputer side, sends warning message.This method is compared with infrared ray sensor monitoring in the past, has increased reliability greatly, has prevented the generation of false alarm.In addition, multiple spot infrared ray sensor monitoring terminal can be adjusted the installation site by actual conditions, has guaranteed the accuracy of reporting to the police.

The a plurality of portable probes of transmitter monitoring part unit by using are to monitor on its a plurality of fault suspicious points in real time, in case transmitter emerged in operation fault, the transmitter monitoring equipment just can directly capture the related data of suspicious points.

In sum, the intelligent Broadcast Control monitoring system that the present invention proposes can solve the monitoring blind spot well; Enlarged the monitoring range of machine room; To many control operations, robotization all is provided, intelligentized solution; Significantly improved the effect of machine room routine work, for value machine and maintainer provide good supplementary means.

Embodiment two

Present embodiment, the difference of present embodiment and embodiment one is the program source switch of sound signal subsystem 1.

In the present embodiment, the function of program source switch is following:

1, main with taking between SDH1 (HARRIS) optical cable program source signal and subsequent use SDH2 (MA05) the optical cable program source signal automatically or the manual ringing switch mode.The default location of equipment is in automatic switchover mode, mainly interrupt with SDH1 (HARRIS) optical cable program source signal when satisfying, and subsequent use SDH2 (MA05) optical cable program source is when still having the condition of signal the implementation automatically switching operation.The time of automaticallying switch was 3 seconds.And when automatic switchover is malfunctioning, also can adopt manual mode that two-way optical cable signal is switched.

2, because FM signal is second-rate, exist more noise, be unfavorable for the judgement that signal has or not,, still take the manual switchover mode between two-way optical cable program source signal and the frequency modulation program source signal from the consideration that equipment switches reliability.

3, continuity and the reliability in order to guarantee to broadcast; After the master breaks down, switches to subsequent use SDH2 (MA05) optical cable program source signal with SDH1 (HARRIS) optical cable program source signal; Can be according to actual conditions; After all program source signals recover normally, adopt the mode of artificial reduction that signal is backed the main signal of using.

4, the input of three tunnel program source signals and last output terminal all are furnished with emergent jack, under the situation of entire equipment paralysis, also can the signal jumper connection be arrived back level equipment through wire jumper even guarantee signal.

5, consider emergency case such as outage, the automatic switchover of two-way optical cable program source signal is accomplished through relay, and the contact of main road optical cable program source signal is a normally closed contact.Under emergency case such as outage, system can guarantee that still main road optical cable program source signal normally exports.

6, the input end of three tunnel program source signals all has nine sections clear and definite LED dynamic light to show, the last output terminal in SELCH also has corresponding nine sections LED dynamic light to show.Thus, can let minder person understand the duty of three tunnel program source signals in real time, be convenient to the operation under the case of emergency.

7, all there is clear and definite status lamp to show between each program source signal switching point, can lets the interior staff of machine room which kind of signal of present use is come into plain view.

8, three road signals all have the trouble light indication, and are furnished with emergency alarm bell sound suggestion device, for good auxiliary differentiation effect has been played in minder person's work.

9, the two-way optical cable program source signal of equipment mainly automatically switch to be accomplished through CPU, brings obstacle in order to prevent the switching that CPU crashes to equipment, is provided with and has increased " house dog " system for the CPU processor, and the assurance system does not get into " deadlock " state easily.

10, reserved the RS-232 serial communication port, can be interconnected with PC, realize remote monitoring and control function, for the long-range modern management of transmitter room is in the future laid a good foundation.

The flow process of switching between three tunnel signal sources is following:

All passed through emergent wire jumper jack separately after the input of three tunnel signal sources; Active and standby then with respectively the evaluate oneself two-way transmission of optical cable signal; One the tunnel outputs to the automatic/hand SS with optical cable signal automatic switchover relay through active and standby, and one the tunnel moves change-over switch with the optical cable signalman and outputs to the automatic/hand SS through active and standby.The output of automatic/hand SS and FM signal converge to optical cable/frequency modulation SS place, export the wire jumper jack through the last signal process of this switch output and output to back level equipment.

Can three switches be realized the priority arrangement shown in the tables 2 through above design: optical cable/frequency modulation SS priority is the highest, automatic/hand SS priority secondly, MTS and relay automatic switchover priority are minimum; And the priority of emergent wire jumper jack is on all switches.

Table 2

The purpose of its design mainly contain following some:

1) the acquiescence position of the switch of program source automatic switchover controller is that optical cable/frequency modulation SS is in the optical cable position; The automatic/hand SS is in automated location; If switching this moment active and standby is invalid with the moving change-over switch of optical cable signalman, can avoid the generation of maloperation thus.

2) when two-way optical cable signal interrupts reporting to the police simultaneously, can be directly switch into frequency modulation through optical cable/frequency modulation SS, the temporal delay of having avoided repeatedly change-over switch to bring.

3) when change-over switch breaks down, can use the highest emergent wire jumper jack of priority to skip all devices signal is reached back level equipment, avoided the generation of signal blind spot.

See also in Fig. 2 present embodiment, the program source switch comprises like lower module:

(1) sampled audio signal module

The prime sampling section, this partial circuit is mainly accomplished by mimic channel.The Balanced Audio signal of at first sending into is isolated through voltage follower (chip TL084) and prime signal, converts thereof into unbalanced signal through difference channel (chip TL084) then.Signal after the conversion impels the amplitude size of output signal to be suitable for the standard that A/D changes through the adjusting of forward amplifier (chip TL084).The signal of considering amplifier output is a sound signal that is superimposed upon on the DC level, so must isolate its DC level through electric capacity, the signal after the isolation is through satisfied the standard of A/D conversion input basically after the half-wave rectification.

And follow-up circuit mainly is the effect of playing protection and filtering.Signal through half-wave rectification passes through the low-pass filter high frequency noise filtering that it is entrained; Through clamping protective circuit the signal of gathering is carried out amplitude limit at last, its objective is and damage stages of digital integrated circuit after other for the signal peak-to-peak value that prevents to collect is too big.

After above signal Processing, just can the signal after handling be sent into the A/D modular converter and make subsequent treatment.

(2) A/D modular converter

The design's A/D modular converter, the A/D conversion chip model that this module adopts is ADC0832.This chip is 8 bit resolution A/D conversion chips, and its best result is distinguished and can be reached 256 grades, can adapt to general analog quantity conversion requirement.

(3) single-chip microcomputer automatic switchover control module.

The 89C52 single-chip microcomputer that the employed CPU control chip of present embodiment is an atmel corp.The a series of intelligent functions that data processing through this single-chip microcomputer and control in real time realize in the preceding text being mentioned.

Because program source automatic switchover controller is to be used in the transmitter room, the high frequency interference that receives is very serious.Control if directly the single-chip processor i/o mouth is connected to transistor base, be easy to take place owing to high frequency interference causes the maloperation that the program source signal switches.So, between single-chip processor i/o mouth and triode, increased the 4N25 photoelectric isolated chip, play buffer action, thereby guarantee the reliability of monolithic machine operation.

When main path signal just often, the single-chip microcomputer output low level, this moment the photoelectric isolated chip output low level to transistor base, triode ends, relay is output as main path signal.When the main path signal fault, single-chip microcomputer output high level, this moment, photoelectric isolated chip was exported high level to transistor base, the triode conducting, the actuating of relay, relay output becomes road signal fully.Relay has used three secondary contacts altogether; Wherein two secondary contacts supply the switching of balanced signal program source to use; Other one road contact is the switching signal that is recycled to single-chip microcomputer, and single-chip microcomputer is differentiated present the use on which road signal of automaticallying switch through this signal, and shows user mode thus.

(4) watchdog circuit and RS-232 communication circuit module

Having increased watchdog reset circuit in the present embodiment increases the reliability of system, and concrete implementation method will be described hereinafter.The inside of single-chip microcomputer does not have crystal oscillator, so its timing and tally function will rely on external crystal-controlled oscillation to realize.

In order to prevent that CPU from crashing, increased outside hardware watchdog timer IMP813L, the work of its inner WatchDog Timer monitoring UP/UC.Single-chip microcomputer whenever sent pulse at a distance from 1 second to the WDI of house dog end.In case in 1.6s, do not detect its work, inner timer will make house dog output WDO be in low level state, thereby cause that RESET produces reset signal.WDO will keep low level up to the work that detects UP/UC at WDI.

The AT89C52 chip itself carries the serial communication interface resource, as long as be connected with outside PC serial port resource, through the control of program, can communicate with outer PC easily.

(5) nine sections LED display modules

Nine sections LED dynamic display circuits for the LB1409 driving.LB1409 is Japan's Company products, 16 pin dual-in-lines, WV: 5.5-16V, maximum power dissipation: 500 milliwatts, dispersion current: 4.7 milliamperes.Have the power consumptive province, highly sensitive, some light-off transient state is good, and evenly, input impedance is high, and tonequality is had no effect at interval for stepping, can be connected to prime easily and do the signal level indication or be connected to the indication of power take-off rate of doing work level.Because of hop count up to nine sections, so dynamic effect is good.

(6) power module

Power-supply system is the important component part in the entire circuit design.Directly have influence on the stability of total system.

The power pack of design; This system needs positive and negative 12V and positive 5V three-way power power supply; Wherein positive and negative 12V supplies with mimic channels such as amplifier and LB1409, and positive 5V is that the voltage transitions through 7805 chips obtains, and it mainly is to supply with digital modules uses such as single-chip microcomputer and A/D chip.Consider that building environment is complicated; Power supply disturbs very serious; Especially the stability to single-chip microcomputer work has considerable influence; Carry out power filter so in positive 5V power-supply circuit, added ∏ type filter network, and all increased capacitor filter at positive and negative 12V power-supply circuit, can normal and stable operation to guarantee each chip.

Embodiment three

Present embodiment, the difference of present embodiment and embodiment one is the signals collecting subsystem of system.See also Fig. 3, in the present embodiment, the signals collecting subsystem comprises like lower module:

1. amplitude limit module:

The too big damage of signal peak-to-peak value back stages of digital integrated circuit in order to prevent to collect need carry out amplitude limit to the signal of being gathered.The effect of amplitude limiter circuit is to be limited to amplitude output signal in certain scope, that is after input voltage surpasses a certain term of reference, output voltage will be limited in a certain level (being called clipping lever), and or else change with input voltage.Utilize clamp diode, guarantee that the amplitude of audio input signal is no more than ± 12V; The effect of clamping circuit is that the top of periodically variable waveform or bottom are remained on a certain definite DC level.

2. voltage follower:

Under situation about breaking down, do not influence the normal operation conditions of prime sampled signal in order to ensure late-class circuit, present embodiment is realized the voltage follower function through a chip.Voltage follower principle: have input impedance height, the low characteristics of output impedance; When input impedance is very high, just be equivalent to the front stage circuits open circuit, when output impedance is very low; Late-class circuit just is equivalent to a constant pressure source, and promptly output voltage does not receive the late-class circuit impedance influences.One is equivalent to open circuit to front stage circuits, and output voltage does not receive the circuit of back level impedance influences again, does not necessarily have buffer action, makes between the forward and backward level circuit to be independent of each other.

3. calculus of differences circuit (realize balance/imbalance change):

Simulating signal is exactly a unbalanced signal if quilt directly transmits in transmission course, if signal inversion, transmits the signal and the original signal of anti-phase then simultaneously; Just be called balanced signal, balanced signal is sent into differential amplifier, original signal and antiphase signal subtraction; The original signal that is strengthened, because in transmission, the interference that two circuits receive is similar; In the process of subtracting each other, cut the same undesired signal, therefore more anti-interference.What but monitoring equipment used is Transistor-Transistor Logic level, and therefore need convert the audio balance signal to unbalanced signal again could use.Utilize the calculus of differences circuit to realize that balance/imbalance changes.

4. amplifier:

Because the input signal amplitude of each frequency, each collection point is inconsistent, be convenient to the use of back level equipment for the signal that makes collection, need regulate to different sampled signals, each sampled signal amplitude is reached unanimity.Utilize chip and peripheral circuit thereof to form signal amplification circuit (in-phase amplification circuit).R1 is an audio frequency input potentiometer (200K), regulates R1 center-side position and can regulate enlargement factor.For the ease of regulating the size of sampled signal; Present embodiment places the outer end of device panel with " 200K potentiometer " in the amplifier circuit, and on its next door, increases instrument connection; Can make things convenient for test sample signal output amplitude size through instruments such as oscillographs, also can be used for monitoring signal.

5. dynamically show each path signal output situation:

The degree because the show bar number on the original color prison device has reached capacity; So after having increased cover HARRIS (SDH) signal specifically newly; The real time status that can't show all signals simultaneously; Each path signal that present embodiment will be gathered directly shows through signal picker, not only can react the real time status of each path intuitively, and has solved the not enough problem of color prison device show bar number.

7. frequency shows

Consider operability, utilized the principle of waver, each waver control one digit number sign indicating number display tube at the frequency display module; 4 waveres are controlled a class frequency display module altogether; For example: show 8888 like need, corresponding waver is " 11111101,11111101; 11111101,11111101 ".

The demodulation of 8 radiofrequency signals

The radiofrequency signal of input demodulates carrier signal and amplitude-modulated signal through coil transformation circle, supplies the back level to use.

Embodiment four

Present embodiment, the difference of present embodiment and embodiment one is the broadcast monitoring subsystem of system.

Can see that through Fig. 4 in the present embodiment, the broadcast monitoring subsystem has 2 single-chip microcomputers, accomplish, 3 monitoring points of each frequency, the selection of totally 24 road signals control, and state indication 8 frequencies.

The broadcast monitoring subsystem mainly comprises two parts: the monitoring point selects control module, frequency to select control module.

The monitoring point selects control module to comprise:

A1, mode selecting unit

The input pattern of this part has adopted 2 buttons that control is selected in 3 monitoring points, and single-chip microcomputer adopts the method for dynamic scan button.Can significantly reduce the cycle of program development like this, accomplish the Cyclic Selection of 3 monitoring points through 2 buttons, also little to the resource loss of single-chip microcomputer.

B1, selection control module

Through the dynamic scan to two button input signals, single-chip microcomputer will select 1 analog switch (4052 chip) to control to 84, and each analog switch is all imported 3 monitoring point signals of 1 frequency.Like this, the monitoring point selects control module just can accomplish the control output of certain monitoring point of 8 frequencies.These 8 output signals select 8 of control module to select in 1 analog switch with directly delivering to frequency, do next step processing.

Simultaneously, single-chip microcomputer will be exported the single-chip microcomputer of one road signal to frequency selection control module, and purpose is to select the current monitoring point of control module single-chip microcomputer for " telling " frequency to select situation.Because according to designing requirement, the automatic switchover time between each monitoring point frequency is different.

C1, status display unit

Here, will export 3 control signals, 3 LED lamps will be controlled, thereby show the current state of choosing the monitoring point by single-chip microcomputer.

D1, RS232 communication unit

Because this equipment will communicate the monitoring situation of reflection trouble spot in time with phonetic alarm.Therefore two single-chip microcomputers in this equipment will carry out the information that multi-computer communication obtains the trouble spot with the single-chip microcomputer in the phonetic alarm.

In the master-slave mode multi-computer communication system, have only a main frame, but slave can many.The information that main frame sends can be sent to all slaves or the slave of appointment, and the information that slave sends has only by main frame and received.Can not direct communication between each slave.The serial ports pattern that it adopts is a working method 3, and it is one 9 a asynchronous serial communication interface, and TXD is a data sending terminal, and RXD is a data receiver.As shown in the figure: as to listen the frequency in the equipment to select single-chip microcomputer and monitoring point to select single-chip microcomputer to transmit failure message as main frame to wheel by the single-chip microcomputer in the phonetic alarm.

Frequency selects control module to comprise:

A2, preference pattern unit

The input pattern of present embodiment will be accomplished the selection control of 8 frequencies.If adopt the method for dynamic scan merely, the wheel that needs at least 17 buttons to accomplish 8 frequencies is listened, single tin, taboo sound function.The SCM program of this module is also being born executing the task that serial ports interrupts and timer interrupts simultaneously.Obviously, adopt the method for dynamic scan, can cause the interface resource of single-chip microcomputer and cause great waste with program internal memory.

So present embodiment has adopted one 4 * 3 matrix form load module.Matrix keyboard is claimed the ranks keyboard again, it be with four I/O lines as column rule, the keyboards that three I/O lines are formed as alignment.A button is set on each point of crossing of column rule and alignment.The number of button just is 4 * 3 on the keyboard like this.This determinant keyboard structure can improve the utilization factor of I/O mouth in the SCM system effectively.As far as single-chip microcomputer, only occupied 7 pin resources, simultaneously,, can let single-chip microcomputer have more memory source to accomplish writing to other program modules owing to introduced external interrupt.

B2, selection control module

Through the control of matrix keyboard input signal, single-chip microcomputer will be accomplished the control of back level 8 being selected 1 analog switch, finally export a certain frequency to output terminal.

C2, status display unit

Here, will export 8 control signals, 8 LED lamps will be controlled, thereby show current which frequency participation monitoring that has by single-chip microcomputer.

D2, charactron indicative control unit

Owing to will show through the frequency of 4 charactrons to current selection, so use single-chip microcomputer, adopt the serial communication form, through 4 shift registers, accomplish the Control work of 4 charactrons.In this equipment, the TXD mouth clock signal of single-chip microcomputer, 4 shift registers are controlled in unification, do the shift motion of data.The RXD mouth is then done the serial data output line, comes 4 shift registers are done the data input, then, respectively the data-switching of serial input is exported for parallel 8 tunnel data by these 4 shift registers, thereby is controlled 4 charactrons respectively.

E2, RS232 communication unit

Because the broadcast monitoring subsystem will communicate the monitoring situation of reflection trouble spot in time with phonetic alarm.Therefore two single-chip microcomputers in this equipment will carry out the information that multi-computer communication obtains the trouble spot with the single-chip microcomputer in the phonetic alarm.

Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to the embodiment that is disclosed.

Claims

1. an intelligent Broadcast Control monitoring system is characterized in that said system comprises: sound signal subsystem, signals collecting subsystem, broadcast monitoring subsystem, warning subsystem, monitoring center's subsystem;

Said monitoring center subsystem comprises to transmitter monitoring in real time with to the real-time monitoring of environmental parameter; When monitoring that transmitter breaks down or environmental parameter when unusual, send alerting signal;

-said amplitude limiter circuit is in order to be limited to amplitude output signal in the scope of setting, and promptly after input voltage exceeds a certain setting term of reference, output voltage will be limited in clipping lever, and or else change with input voltage; Said amplitude limiter circuit comprises a clamping circuit, in order to the top of periodically variable waveform or bottom are remained on the DC level confirmed; Said clamping circuit comprises a clamp diode, the amplitude of audio input signal is no more than ± 12V;

Said broadcast monitoring subsystem comprises:

-frequency is selected control module, selects control module to link to each other with the monitoring point, through selecting the matrix form input pattern for use, with the mode of interrupt response the selection of a plurality of frequencies is controlled; Select control module to select the matrix form load module for use for frequency, the selection of each frequency is controlled with the mode of interrupt response; Select module to select for use 2 buttons and single-chip microcomputer to carry out dynamic scan for the node of each frequency, accomplish and select control;

The broadcast monitoring subsystem further comprises a keylock module, and behind the opening of device, equipment gets into original state automatically, and all setpoint frequencies are participated in wheel automatically and listened, and listening point is defaulted as high Zhou Tonglu, and wheel is listened and is spaced apart setting-up time; State LED lamp shows the frequency that current participation is monitored, and charactron shows the frequency of listening when front-wheel; As to carry out single tin to a certain frequency, and utilize the mode of a keylock, only need directly to press " confirming " key, the single tin of current frequency of monitoring gets final product; As will prohibit a certain frequency and listen, utilize the mode of a keylock, only need directly to press " cancellation " key, prohibit and listen the current frequency of monitoring to get final product;

Said warning subsystem comprises sampling module, voice module, display module;

Said monitoring center subsystem comprises:

-transmitter monitoring equipment utilizes a plurality of portable probes to monitoring in real time on its a plurality of fault suspicious points, in case transmitter emerged in operation fault, the transmitter monitoring equipment just can directly capture the related data of suspicious points.

2. intelligent Broadcast Control monitoring system is characterized in that:

Said intelligent Broadcast Control monitoring system comprises sound signal subsystem, signals collecting subsystem, broadcast monitoring subsystem, warning subsystem and monitoring center's subsystem; Said signals collecting subsystem is connected the sampled signal that the audio frequency acquiring signaling subsystem is sent with sound signal subsystem, broadcast monitoring subsystem, warning subsystem respectively;

Said broadcast monitoring subsystem comprises:

Said frequency selects control module through selecting the matrix form input pattern for use, with the mode of interrupt response the selection of a plurality of frequencies is controlled;

Select control module to select the matrix form load module for use for frequency, the selection of each frequency is controlled with the mode of interrupt response; Select module to select for use several buttons and single-chip microcomputer to carry out dynamic scan for the node of each frequency, accomplish and select control;

Said monitoring point selects control module to comprise:

Monitoring point selection result state display module is selected the control signal of single-chip microcomputer output in order to receive the monitoring point, the LED lamp is controlled, thereby shown the current state of choosing the monitoring point;

Said frequency selects control module to comprise:

8 select 1 analog switch, through the control of said selected frequencies output signal, export the signal of a certain selected frequencies in the signal of said k frequency choosing the monitoring point; Charactron display process module in order to receive said selected frequencies charactron shows signal, shows through the frequency of shift register driving charactron to current selection;

Current participation frequency state indicating module is selected the control signal of single-chip microcomputer output in order to receive said frequency, the LED lamp is controlled, thereby shown current which frequency participation monitoring that has;

Said monitoring center subsystem is in order to comprise the real-time monitoring of " temperature, humidity, smog, sparking, infrared intrusion " parameter in the real-time monitoring that realizes transmitter state and the environment.

3. intelligent Broadcast Control monitoring system according to claim 2 is characterized in that:

Said amplitude limiter circuit is in order to be limited to amplitude output signal in the scope of setting, and promptly after input voltage exceeds a certain setting term of reference, output voltage will be limited in clipping lever, and or else change with input voltage; Said amplitude limiter circuit comprises a clamping circuit, in order to the top of periodically variable waveform or bottom are remained on the DC level confirmed; Said clamping circuit comprises a clamp diode, the amplitude of audio input signal is no more than ± 12V;

4. intelligent Broadcast Control monitoring system according to claim 2 is characterized in that:

5. intelligent Broadcast Control monitoring system according to claim 2 is characterized in that:

Said warning subsystem comprises sampling module, voice module, display module;

6. intelligent Broadcast Control monitoring system according to claim 2 is characterized in that:

Said warning subsystem further comprises sub-category relatively alarm unit, in order to relatively judging the false alarm of avoiding the single node sampling error to cause after each sampled point is sampled simultaneously in the path;

Said broadcast monitoring subsystem comprises the interlink warning unit; When phonetic alarm collects data from signal picker; When pointing out through sending alarm voice after judging; Send the signal of concrete trouble spot through the RS232 communication interface on the phonetic alarm to the broadcast monitoring equipment, the broadcast monitoring equipment that receives this signal can be locked in listening point on the trouble spot automatically, strengthens monitoring;

Said monitoring center subsystem comprises the sparking alarm unit, adopts the difference algorithm to judge the sparking warning, and relatively the interior intensity of illumination of some time section changes continuously, if exceed predefined difference, when just illumination is undergone mutation, just thinks to report to the police; Be similar to the brightness gradual change that day and night substitutes and all belong to normal condition;

Said monitoring center subsystem comprises the infrared intrusion alarm unit; Utilize 2 or 2 above infrared ray sensor monitoring illegal invasions, when having monitored illegal invasion simultaneously, send alerting signal to single-chip microcomputer; Intrusion alarm is thought by single-chip microcomputer side, sends warning message;

Said monitoring center subsystem comprises transmitter monitoring equipment unit: utilize a plurality of portable probes to monitoring in real time on its a plurality of fault suspicious points; In case transmitter emerged in operation fault, transmitter monitoring equipment just can directly capture the related data of suspicious points.