CN103442323A - Playing unit with fault detection function and public broadcast system with same - Google Patents
Playing unit with fault detection function and public broadcast system with same Download PDFInfo
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- CN103442323A CN103442323A CN2013103941055A CN201310394105A CN103442323A CN 103442323 A CN103442323 A CN 103442323A CN 2013103941055 A CN2013103941055 A CN 2013103941055A CN 201310394105 A CN201310394105 A CN 201310394105A CN 103442323 A CN103442323 A CN 103442323A
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Abstract
The invention discloses a playing unit with the fault detection function and a public broadcast system with playing units with the fault detection function, and belongs to the field of public broadcast systems. The public broadcast system comprises a public broadcast system body, a management workstation and a series of playing units with the fault detection function. The public broadcast system body comprises a series of broadcast partitions, the output of the broadcast partitions is connected with the corresponding playing units respectively, and each playing unit is in two-way connection with the management workstation. Each playing unit with the fault detection function comprises a signal processing unit with both the sound transmission function and the fault inquiry signal transmission function, and more than one intelligent loudspeaker with the broadcasting function. The playing unit and the public broadcast system are simple in structure and easy to operate, compared with a traditional method that a power amplifier loudspeaker is used and a sound field detection system is configured at the same time, the method has the advantages that the system cost is greatly reduced, the sound field monitoring effect is improved, the working state of each loudspeaker in each broadcasting partition can be automatically detected while a broadcasting signal is sent, the loudspeaker which breaks down can be detected through the management workstation in real time, and the hardware condition is created for providing efficient broadcast service and meeting emergencies.
Description
Technical field
The present invention relates to public address system.
Background technology
Public Address system on airport, all there is employing the public field such as station, hotel, exhibition center.Original broadcast system does not have the sound field detecting devices, and need to regularly detect loudspeaker and whether break down, maintenance inconvenience, use cost is high, particularly at large space, difficult especially to the detection of loudspeaker.Improved Public Address system has added a set of sound field detection system, on the basis of existing broadcast system, set up a set of sound field detection system, this system needs independent wiring, with the broadcast system concurrent working, can detect in real time the fault of loudspeaker, but still exist and can only locate fault point at which loudspeaker, can not identify the problems such as failure cause.
Summary of the invention
The invention provides the broadcast unit that a kind of tape jam detects, this broadcast unit also has the function of fault detect when playing voice, can detect broadcast with loudspeaker and broadcast circuit whether in malfunction, for the normal operation of broadcast system and follow-up loudspeaker maintenance provide reliable reference.
The present invention also provides a kind of Public Address system of the broadcast unit that contains the tape jam detection, this system forms simple in structure, easy to operate, except thering is the broadcast capability of broadcast system commonly used, can also detect in real time the operating state of broadcast unit and the particular location of trouble unit simultaneously.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the broadcast unit that a kind of tape jam detects comprises and has transmission broadcasting sound signal and the signal processing module of fault inquiry signal and the coupled intelligent loudspeaker that have broadcasting function more than concurrently;
Described signal processing module comprises mixer, first signal modulator, the first analyzer, first signal demodulator and the first high pass filter, one of them input of described mixer fetches the broadcast singal from radio unit, that another input termination of mixer is sent by the first analyzer, via the fault inquiry signal after the first signal modulator, the output of mixer connects intelligent loudspeaker; Fault back-signalling from intelligent loudspeaker connects the respective input of the first analyzer afterwards via the first high pass filter and first signal demodulator;
Described intelligent loudspeaker comprise low pass filter, the second high pass filter, secondary signal modulator, power amplifier, secondary signal demodulator, the second analyzer, address DIP device, fault detector and common loudspeaker; The output of described signal processing module divides two-way to be connected with low pass filter, the second high pass filter respectively; Shown in the output of low pass filter via being connected with common loudspeaker after power amplifier; The output of described the second high pass filter is via an input that connects the second analyzer after the secondary signal demodulator, the unidirectional connection between described the second analyzer and address DIP device, the two-way connection between described the second analyzer and fault detector, the output of described the second analyzer send back to signal processing module via after the secondary signal modulator by signal.
Between described signal processing module and intelligent loudspeaker, by bus, be connected.
The present invention also provides a kind of technical scheme:
A kind of Public Address system of the broadcast unit that contains the tape jam detection, comprise the broadcast unit that existing Public Address system, management work station and a series of tape jam that does not comprise broadcast loudspeaker and power amplifier detects; Described Public Address system comprises a series of broadcast subregion, and the output of broadcast subregion is connected with the mixer of corresponding broadcast unit, and described each broadcast unit passes through two-way connection the between the first analyzer and management work station.
Between each broadcast unit and management work station, by local area network (LAN), be connected.
Be provided with the network switch between each broadcast unit and management work station.
It between described Public Address system and broadcast unit, is wired connection.
The technological progress that adopts technique scheme to obtain is: broadcast unit and total system that tape jam provided by the invention detects, simple in structure, easy to operate, with respect to traditional use power amplifier, drive loudspeaker to configure again the mode of sound field detection system, also greatly reduce the cost of system, improved the monitoring effect of sound field; When broadcast system sends broadcast, can also automatically detect the operating state of respectively broadcast loudspeaker and the circuit of respectively broadcasting subregion and the particular location of fault loudspeaker; Management work station can detect and show the state of the broadcast circuit of the loudspeaker that respectively broadcast in real time, for efficient broadcast service and emergency processing are provided, has created hardware condition.
The accompanying drawing explanation
The structural representation of the broadcast unit that Fig. 1 is tape jam detection of the present invention;
The structural representation that Fig. 2 is message processing module in broadcast unit;
The structural representation that Fig. 3 is intelligent loudspeaker in broadcast unit;
The structural representation that Fig. 4 is Public Address system of the present invention;
Fig. 5 is the detailed connection layout of signal processing module in Fig. 4;
Fig. 6 is the detailed connection layouts of intelligent loudspeaker in Fig. 4.
Embodiment
The broadcast unit known as shown in Figure 1, that tape jam detects, comprise and have transmission sound and the signal processing module of fault inquiry signal and the coupled intelligent loudspeaker that have broadcasting function more than concurrently.
Between signal processing module and intelligent loudspeaker, by bus, be connected.Described signal processing module also sends malfunction detection signal when to intelligent loudspeaker, transmitting conventional broadcast singal, the intelligence loudspeaker are monitored the malfunction detection signal from signal processing module when playing conventional broadcast singal, and the analysis result of detection of self is sent to signal processing module analyzed.
Figure 2 shows that the structural representation of signal processing module, described signal processing module comprises mixer, first signal modulator, the first analyzer, first signal demodulator and the first high pass filter, one of them input of described mixer fetches the broadcast singal from radio unit, that another input termination of mixer is sent by the first analyzer, via the accident analysis signal after the first signal modulator, the output of mixer connects intelligent loudspeaker; Fault back-signalling from intelligent loudspeaker connects the respective input of the first analyzer afterwards via the first high pass filter and first signal demodulator.
The operation principle of this signal processing module and process are: the first analyzer is the core work parts of this module, and it is responsible for the fault back-signalling that sends malfunction detection signal, intercepts intelligent loudspeaker.
Before sending fault detection signal, first by the first parser generation, detect instruction, then send to the first signal modulator, detect address and Detection of content that instruction mainly comprises intelligent loudspeaker; The first signal modulator will detect instruction again and be modulated into fault detection signal and send to mixer; After mixing, mixer is sent this fault detection signal normal broadcast signal with broadcast system sends to intelligent loudspeaker.
Signal on the first high pass filter foldback circuit, filter out the broadcast singal of low frequency, picks up intelligent loudspeaker and send the high frequency fault back-signalling of returning, and by this signal, gives the first signal demodulator; The first signal demodulator sends the first analyzer to after high frequency analog signals is demodulated into to digital signal; The digital signal that the first analyzer sends by analyzing the first signal demodulator, learn which intelligent loudspeaker breaks down.
Figure 3 shows that the structural representation of intelligent loudspeaker, described intelligent loudspeaker comprise low pass filter, the second high pass filter, secondary signal modulator, power amplifier, secondary signal demodulator, the second analyzer, address DIP device, fault detector and common loudspeaker; The output of described signal processing module divides two-way to be connected with low pass filter, the second high pass filter respectively; Shown in the output of low pass filter via being connected with common loudspeaker after power amplifier; The output of described the second high pass filter is via an input that connects the second analyzer after the secondary signal demodulator, the unidirectional connection between described the second analyzer and address DIP device, the two-way connection between described the second analyzer and fault detector, the output of described the second analyzer send back to signal processing module via after the secondary signal modulator by signal.
The operation principle of these intelligence loudspeaker and process are: low pass filter detects on circuit from the audio broadcast signal of signal processing module, sends common loudspeaker to by power amplifier and is play; The second high pass filter detects the high frequency malfunction detection signal from signal processing module, sends it to the secondary signal demodulator; The secondary signal demodulator is given the second analyzer after this analog signal conversion is become to digital signal, the second analyzer detects unique address code of the sign loudspeaker in malfunction detection signal from digital signal, this address code is compared with the address code of giving these intelligent loudspeaker in the local address DIP device, if different from the address code of these intelligent loudspeaker, ignore this signal; If identical with the address code of these intelligent loudspeaker, extract the probe instructions in malfunction detection signal; If this probe instructions is invalid, ignore this signal; Otherwise the second analyzer starts fault detector to the fault detector transmitted signal; Whether the operating state whether fault detector detection power amplifier is transferred to broadcast singal common loudspeaker and common loudspeaker is normal, and gives the second analyzer by test results report; The second analyzer generates response code according to the testing result of fault detector, after being combined to form back-signalling with local intelligent loudspeaker address code, sends to the secondary signal modulator; The secondary signal modulator sends on circuit after this back-signalling is modulated into to analog signal, send back to signal processing module, completes the epicycle testing.
Above-mentioned operation principle and the course of work for broadcast unit in the present invention.From the above, signal processing module is only inquired about the operating state of intelligent loudspeaker at every turn, therefore, in order to guarantee the operating state of connected each intelligent loudspeaker, signal processing module be actually ceaselessly, circulating transmission malfunction detection signal, just in each signal sent, the address code of intelligent loudspeaker is different.
Figure 4 shows that the Public Address system of the broadcast unit that contains the tape jam detection, this system comprises the broadcast unit that existing Public Address system, management work station and a series of tape jam that does not comprise broadcast loudspeaker and power amplifier detects; Described Public Address system comprises a series of broadcast subregion, and the output of broadcast subregion is connected with the mixer of corresponding broadcast unit, and described each broadcast unit passes through two-way connection the between the first analyzer and management work station, as shown in Figure 5.Figure 6 shows that the concrete connection diagram of signal processing module and intelligent loudspeaker.
In the present invention, Public Address system does not comprise broadcast loudspeaker and power amplifier part, because the broadcast unit of back just has this function.Public Address system all comprises a series of broadcast subregion usually, and these broadcast subregions are mainly in order to guarantee that broadcast singal can cover extensively, at certain area, arrange.Such as a broadcast subregion is set at waiting room, a broadcast subregion is set at the place, exit.The broadcast singal of each broadcast subregion just is connected with the broadcast unit of tape jam in this subregion setting detection after out.At first conventional broadcast singal enters is the mixer in the signal processing module of broadcast unit, then processed according to the operation principle of signal processing module in broadcast unit.
Also comprise a management work station in native system, each broadcast unit sends to management work station by the fault back-signalling of having analyzed.Management work station gathers these information, and the staff can arrange the maintenance personal to be keeped in repair the fault loudspeaker according to these information in time, to guarantee the normal operation of broadcast system.Management work station can also send ad hoc inquiry signal, the operating state of inquiring about specific a certain intelligent loudspeaker to a certain broadcast unit.
Between management work station and broadcast unit, by the local area network (LAN) two-way communication, between is provided with the equipment such as the network switch as the intermediate transit structure.Respectively broadcast wired connection between subregion and broadcast unit in Public Address system, can utilize existing broadcast subregion and the connecting line of broadcast equipment to get final product, without wiring separately again, saved the cost of system.
The overall routing of this broadcast system adopts three-wire system, is respectively holding wire, positive source, power ground.Positive source and power ground provide working power to intelligent loudspeaker.Holding wire is with fieldbus form transmission fault detectable signal and fault back-signalling.
The quantity of the intelligent loudspeaker that in the present invention, broadcast unit contains is not fixed, each broadcast subregion is connected with a broadcast unit usually, and in whole system, the quantity of broadcast subregion neither be changeless, these relate to the part of quantity, and those skilled in the art select the quantity setting to get final product according to actual needs voluntarily.The connected mode of equipment room neither be changeless, can carry out according to actual needs choose reasonable.
Claims (6)
1. the broadcast unit that tape jam detects, is characterized in that comprising having concurrently and transmit broadcasting sound signal and the signal processing module of fault inquiry signal and the coupled intelligent loudspeaker that have broadcasting function more than;
Described signal processing module comprises mixer, first signal modulator, the first analyzer, first signal demodulator and the first high pass filter, one of them input of described mixer fetches the broadcast singal from radio unit, that another input termination of mixer is sent by the first analyzer, via the fault inquiry signal after the first signal modulator, the output of mixer connects intelligent loudspeaker; Fault back-signalling from intelligent loudspeaker connects the respective input of the first analyzer afterwards via the first high pass filter and first signal demodulator;
Described intelligent loudspeaker comprise low pass filter, the second high pass filter, secondary signal modulator, power amplifier, secondary signal demodulator, the second analyzer, address DIP device, fault detector and common loudspeaker; The output of described signal processing module divides two-way to be connected with low pass filter, the second high pass filter respectively; Shown in the output of low pass filter via being connected with common loudspeaker after power amplifier; The output of described the second high pass filter is via an input that connects the second analyzer after the secondary signal demodulator, the unidirectional connection between described the second analyzer and address DIP device, the two-way connection between described the second analyzer and fault detector, the output of described the second analyzer send back to signal processing module via after the secondary signal modulator by signal.
2. the broadcast unit that tape jam according to claim 1 detects, is characterized in that by bus, being connected between described signal processing module and intelligent loudspeaker.
3. the Public Address system of a broadcast unit that contains tape jam detection claimed in claim 1, is characterized in that the broadcast unit that comprises that existing Public Address system, management work station and a series of tape jam that does not comprise broadcast loudspeaker and power amplifier detects; Described Public Address system comprises a series of broadcast subregion, and the output of broadcast subregion is connected with the mixer of corresponding broadcast unit, and described each broadcast unit passes through two-way connection the between the first analyzer and management work station.
4. a kind of Public Address system that contains the broadcast unit that tape jam detects according to claim 3, is characterized in that by local area network (LAN), being connected between each broadcast unit and management work station.
5. the Public Address system of a kind of broadcast unit that contains the tape jam detection according to claim 4, is characterized in that being provided with the network switch between each broadcast unit and management work station.
6. the Public Address system of a kind of broadcast unit that contains the tape jam detection according to claim 3, is characterized in that between described Public Address system and broadcast unit being wired connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310394105.5A CN103442323B (en) | 2013-09-03 | 2013-09-03 | The broadcast unit of a kind of tape jam detection and the Public Address system containing this element |
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| CN201310394105.5A CN103442323B (en) | 2013-09-03 | 2013-09-03 | The broadcast unit of a kind of tape jam detection and the Public Address system containing this element |
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| CN104902405A (en) * | 2014-04-03 | 2015-09-09 | 宝鸡市凌云机电设备制造有限公司 | High-power matrix loudspeaker |
| CN105991335A (en) * | 2015-02-25 | 2016-10-05 | 邵未 | Addressable fault isolation system |
| CN110089133A (en) * | 2016-12-19 | 2019-08-02 | 罗伯特·博世有限公司 | Method and apparatus for monitoring at least one speaker wire |
| CN112822624A (en) * | 2021-01-14 | 2021-05-18 | 四川湖山电器股份有限公司 | Linear array loudspeaker detection method and system based on FFT |
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| CN103442323B (en) | 2016-08-24 |
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Effective date of registration: 20161026 Address after: 100036 Beijing City, Haidian District Wanshou Road railway building, No. 2 Patentee after: The Sixth Engineering Bureau Group Co., Ltd., China Railway Patentee after: China Raliway Sixth Group Electric Co., Ltd. Address before: 100036 Beijing City, Haidian District Wanshou Road railway building, No. 2 Patentee before: The Sixth Engineering Bureau Group Co., Ltd., China Railway Patentee before: Beijing Zhongtie Tianyi Technology Development Co., Ltd. |