CN111063175A - Detection system and method of wired alarm system - Google Patents
Detection system and method of wired alarm system Download PDFInfo
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- CN111063175A CN111063175A CN201911419889.6A CN201911419889A CN111063175A CN 111063175 A CN111063175 A CN 111063175A CN 201911419889 A CN201911419889 A CN 201911419889A CN 111063175 A CN111063175 A CN 111063175A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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Abstract
A detection system and method for a wired alarm system includes a wired alarm system monitoring server, an Ethernet network, and a plurality of alarm speaker monitoring devices. Every alarm speaker monitoring devices includes a plurality of adapters, a plurality of monitor terminal and monitoring host computer, the adapter is used for picking up audio signal that alarm speaker sent and turns into behind the sound wave signal and exports for monitor terminal, monitor terminal obtains alarm speaker's fault information according to the sound wave signal, and send this fault information for the monitoring host computer, send for wired alarm system monitoring server through ethernet by the monitoring host computer again, in order to realize wired alarm system monitoring server to wired alarm system's monitoring. Because the cable for data communication between the monitoring terminal and the monitoring host computer is shared with the communication cable of the wired alarm system, the monitoring of the existing wired alarm system can be realized without laying a new cable.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring of nuclear power stations, in particular to a detection system and a detection method of a wired alarm system.
Background
The wired alarm system of the nuclear power station is provided with tens of thousands of alarm loudspeakers in a plant area of the nuclear power station, and due to the particularity of the nuclear industry, in order to perform early warning and quick response to dangerous cases, each alarm loudspeaker needs to be guaranteed to work normally at any time in the plant area, so that regular fault maintenance is needed. At present, the alarm loudspeaker of the nuclear power station is detected by adopting a manual inspection method, a large amount of manpower and material resources are consumed, and obviously, the method has low efficiency and is easy to miss detection and false detection, so that potential safety hazards are brought to the safe operation of the nuclear power station. Therefore, it is necessary to develop a detection system of a wired alarm system, which can automatically detect and prompt the fault status of each alarm speaker in the factory in time even in a complicated and severe environment.
Disclosure of Invention
The invention mainly solves the technical problems that in the prior art, the efficiency of a nuclear power station manual inspection alarm loudspeaker is low, and the leakage inspection and the false inspection are easy.
According to a first aspect, there is provided in one embodiment a detection system for a wired alarm system, the wired alarm system comprising q alarm speakers, the detection system being for detecting the alarm speakers of the wired alarm system; the detection system comprises a wired alarm system monitoring server, an Ethernet and p alarm loudspeaker monitoring devices; the wired alarm system monitoring server is respectively connected with each alarm loudspeaker monitoring device through the Ethernet; wherein q and p are each 1, 2 or an integer greater than 2;
each alarm loudspeaker monitoring device comprises n sound collectors, monitoring terminals and a monitoring host, wherein the number of the monitoring terminals is the same as that of the sound collectors; wherein n is 1, 2 or an integer greater than 2;
the sound pick-up is used for picking up an audio signal sent by the alarm loudspeaker, converting the audio signal into a sound wave signal and outputting the sound wave signal; each of the microphones picking up an audio signal of one of the alarm speakers;
the monitoring terminal is used for receiving the sound wave signal, acquiring fault information of the alarm loudspeaker according to the sound wave signal and sending the fault information of the alarm loudspeaker to the monitoring host; the cable used for the data communication between the monitoring terminal and the monitoring host computer is shared with the cable used for the communication between the wired alarm system and the cable used for the data communication between the monitoring terminal and the monitoring host computer; each monitoring terminal only receives a sound wave signal sent by one sound pickup; the failure information of the alarm speaker includes whether the alarm speaker is failed and/or ID information of the alarm speaker;
the monitoring host is used for receiving the fault information of the alarm loudspeaker and sending the fault information to the wired alarm system monitoring server through the Ethernet.
The wired alarm system monitoring server is used for monitoring the fault information of each alarm loudspeaker of the wired alarm system and sending out fault alarm prompt information when the alarm loudspeaker is detected to be in fault.
Further, the fault alarm prompt message includes the position information of the alarm speaker which has a fault;
the wired alarm system monitoring server distinguishes each alarm loudspeaker monitoring device according to the IP address of the monitoring host; and/or the ID information of each alarm loudspeaker corresponds to the position information of the alarm loudspeaker, and the wired alarm system monitoring server determines the position information of each alarm loudspeaker according to the ID information of the alarm loudspeaker.
Furthermore, the monitoring host is further configured to output a preset guidance audio to the alarm speaker, so that the preset guidance audio is played through the alarm speaker.
Further, the monitoring terminal acquires a characteristic signal of the sound wave signal according to the sound wave signal and acquires fault information of the alarm loudspeaker according to the characteristic signal; the characteristic signal comprises a waveform, a frequency, an amplitude and/or a phase of the acoustic wave signal.
Further, the monitoring terminal obtains the characteristic signal after denoising the sound wave signal by adopting a morphological filtering method.
Further, the monitoring terminal and the monitoring host adopt a power line carrier communication mode for data communication; and/or the power supply of the monitoring terminal is provided by the monitoring host.
Further, the monitoring host includes:
the m PLC master control communication modules are used for carrying out data communication with the monitoring terminal; and/or, the power supply is provided for the monitoring terminal; wherein m is 1, 2 or an integer greater than 2;
the audio output module is used for outputting the preset guide audio to the alarm loudspeaker so as to play the preset guide audio through the alarm loudspeaker;
the power supply is used for providing power for the monitoring host;
the microprocessor is used for controlling the on-off state of the monitoring terminal through the PLC master control communication module; and/or, the monitoring server is also used for acquiring the fault information of the alarm loudspeaker and outputting the fault information to the wired alarm system monitoring server;
a memory for storing fault information of the alarm speaker.
And the Ethernet card is used for connecting the monitoring host with the Ethernet.
According to a second aspect, there is provided in one embodiment a method of detecting a wired alarm system, comprising:
an alarm loudspeaker of the wired alarm system plays preset pilot audio or alarm audio;
the sound pick-up picks up the audio signal sent by the alarm loudspeaker and converts the audio signal into a sound wave signal;
the monitoring terminal acquires the fault information of the alarm loudspeaker according to the sound wave signal and sends the fault information of the alarm loudspeaker to the monitoring host; each monitoring terminal only receives a sound wave signal sent by one sound pickup; the fault information of the alarm loudspeaker comprises whether the alarm loudspeaker is in fault and/or ID information of the alarm loudspeaker, and the ID information of each alarm loudspeaker corresponds to the position information of the alarm loudspeaker; the cable used for data communication between the monitoring terminal and the monitoring host is a communication cable of the wired alarm system;
the monitoring host receives the fault information of the alarm loudspeaker and sends the fault information to a wired alarm system monitoring server through an Ethernet;
the wired alarm system monitoring server monitors fault information of each alarm loudspeaker of the wired alarm system;
and sending fault alarm prompt information when the alarm loudspeaker breaks down, wherein the fault alarm prompt information comprises the position information of the alarm with the fault.
Further, the monitoring host receives the fault information of the alarm speaker and sends the fault information to the wired alarm system monitoring server through the ethernet network, and the monitoring host comprises:
p monitoring hosts are provided, and p is 1, 2 or an integer greater than 2; the wired alarm system monitoring server distinguishes each monitoring host according to the IP address of the monitoring host; and the monitoring host sequentially sends the fault information of the alarm loudspeaker to the wired alarm system monitoring server according to a preset sequence.
Further, still include:
the wired alarm system monitoring server stores the acquired fault information of the alarm loudspeaker in a database, after receiving the fault information of the alarm loudspeaker sent by all the monitoring hosts, sequentially inquires the fault information of the alarm loudspeaker in the database according to a preset sequence, acquires the ID information of the alarm loudspeaker with the fault, and acquires the position information of the alarm loudspeaker with the fault according to the ID information of the alarm loudspeaker with the fault.
According to the detection system and method of the wired alarm system of the above embodiments, the detection system includes a wired alarm system monitoring server, an ethernet network and a plurality of alarm speaker monitoring devices, and the wired alarm system monitoring server is connected to each alarm speaker monitoring device through the ethernet network. Every alarm speaker monitoring devices includes a plurality of adapters, a plurality of monitor terminal and monitoring host computer, the adapter is used for picking up the audio signal that the alarm speaker sent, and export for monitor terminal after turning into the sound wave signal with audio signal, monitor terminal acquires the fault information of alarm speaker according to the sound wave signal, and send this fault information for the monitoring host computer, send for wired alarm system monitoring server through ethernet by the monitoring host computer again, in order to realize the monitoring of wired alarm system monitoring server to wired alarm system. Because the cable for data communication between the monitoring terminal and the monitoring host computer is shared with the communication cable of the wired alarm system, the monitoring of the existing wired alarm system can be realized without laying a new cable.
Drawings
FIG. 1 is a schematic diagram of the structural connections of a detection system of a wired alarm system in one embodiment;
FIG. 2 is a schematic diagram of the structural connections of an alarm speaker monitoring device in one embodiment;
FIG. 3 is a schematic diagram of the structural connections of the monitoring host in one embodiment;
FIG. 4 is a schematic flow chart illustrating a method for detecting a wired alarm system in one embodiment;
fig. 5 is a flow chart illustrating a detection method of the wired alarm system according to another embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The detection system of the wired alarm system of the nuclear power station is also required to be constructed in consideration of electrical isolation due to the consideration of safety, and lines with different voltages and different currents are allowed to be laid in the same trunking and pipeline according to electrical specifications, so that a main line and other weak lines of the detection system of the wired alarm system are required to be laid on different bridges, and otherwise, signal interference is caused. The detection system of the wired alarm system is used as an acoustic alarm system, the cable route is different from the cable broadcast system of the nuclear power station, the cable broadcast system can adopt a relatively low-power supplier to output, thus the cable of the wired broadcast system is laid on a low-power bridge, and the cable of the wired alarm system is laid on a different bridge with relatively high power, so that the cable is physically isolated from the wired broadcast system. According to the method, the alarm loudspeaker of the wired alarm system is monitored in real time, the detection system of the wired alarm system of the nuclear power station is designed, cables need to be laid, and new cables are difficult to lay in the nuclear power station, so that the detection system for establishing the wired alarm system of the nuclear power station in the laid cables can be preferably utilized, and the detection system has better usability and stability.
In the embodiment of the invention, the detection system comprises a wired alarm system monitoring server, an Ethernet and a plurality of alarm loudspeaker monitoring devices, wherein the wired alarm system monitoring server is respectively connected with each alarm loudspeaker monitoring device through the Ethernet. Every alarm speaker monitoring devices includes a plurality of adapters, a plurality of monitor terminal and monitoring host computer, the adapter is used for picking up the audio signal that the alarm speaker sent, and export for monitor terminal after turning into the sound wave signal with audio signal, monitor terminal acquires the fault information of alarm speaker according to the sound wave signal, and send this fault information for the monitoring host computer, send for wired alarm system monitoring server through ethernet by the monitoring host computer again, in order to realize the monitoring of wired alarm system monitoring server to wired alarm system. Because the cable for data communication between the monitoring terminal and the monitoring host computer is shared with the communication cable of the wired alarm system, the monitoring of the existing wired alarm system can be realized without laying a new cable.
Example one
Referring to fig. 1, a schematic diagram of the structural connection of the detection system of the wired alarm system in one embodiment is shown, the wired alarm system includes q alarm speakers and an alarm control device 15, and each alarm speaker is connected through a cable 16 for communication with the wired alarm system. The detection system of the wired alarm system is used for detecting an alarm loudspeaker of the wired alarm system. The detection system of the wired alarm system includes a wired alarm system monitoring server 20, an ethernet network 30, and p alarm speaker monitoring devices 10. The wired alarm system monitoring server 20 is connected to each of the alarm speaker monitoring devices 10 through the ethernet network 30, respectively. Wherein q and p are each 1, 2 or an integer greater than 2. Each alarm speaker monitoring apparatus 10 includes n microphones, the same number of monitoring terminals 12 as the number of microphones, and a monitoring host 13. Wherein n is 1, 2 or an integer greater than 2. The sound pick-up is used for picking up the audio signal that the warning speaker sent to convert audio signal into sound wave signal back output. Each pickup picks up the audio signal of one alarm speaker. The monitoring terminal 12 is configured to receive the sound wave signal, acquire fault information of the alarm speaker according to the sound wave signal, and send the fault information of the alarm speaker to the monitoring host 13. The cable for data communication between the monitoring terminal 12 and the monitoring host 13 is shared with the cable 16 for wired alarm system communication, and the cable for data communication between the monitoring terminal 12 and the monitoring host 13 is shared with the cable 16 for communication between the alarm speaker and the alarm control device 15. Each monitoring terminal 12 receives sound signals from only one microphone and each microphone picks up audio signals from only one alarm speaker. The failure information of the alarm speaker includes whether the alarm speaker is failed and/or ID information of the alarm speaker, which can be used for the monitoring terminal 12 to distinguish each microphone, each ID information corresponding to the position information of one alarm speaker. The monitoring host 13 is used for receiving the fault information of the alarm speaker and sending the fault information to the wired alarm system monitoring server 20 through the ethernet network 30. The wired alarm system monitoring server 20 is configured to monitor fault information of each alarm speaker of the wired alarm system, and issue a fault alarm prompt message when a fault is detected in the alarm speaker. In one embodiment, the malfunction alert notice information includes location information of the malfunctioning alarm speaker. The wired alarm system monitoring server 20 distinguishes each alarm speaker monitoring device 10 according to the IP address of the monitoring host 13. And/or the ID information of each alarm speaker corresponds to the position information of the alarm speaker, and the wired alarm system monitoring server 20 determines the position information of each alarm speaker according to the ID information of the alarm speaker. In one embodiment, the monitoring host 13 is further configured to output a preset pilot tone to the alarm speaker, so as to play the preset pilot tone through the alarm speaker. In one embodiment, the monitoring terminal 12 obtains a characteristic signal of the sound wave signal according to the sound wave signal, and obtains the fault information of the alarm speaker according to the characteristic signal, where the characteristic signal includes a waveform, a frequency, an amplitude and/or a phase of the sound wave signal.
In an embodiment, the monitoring terminal 12 performs noise reduction on the sound wave signal by using a morphological filtering method and then obtains the characteristic signal. The basic idea of morphological filtering is to match the sound wave signals by moving the designed small structural elements section by section in the sound wave signals, so as to achieve the purposes of extracting signal information, keeping detailed characteristics and suppressing noise. The 4 basic operations of morphological filtering are dilation, erosion, open, and close operations.
Setting the sound signal as f (N), wherein N is 0, 1, …, N-1, and N is the number of sampling points;
defining the structural element sequence as g (M), M is 0, 1, …, M-1, M is the structural element width, and N is more than or equal to M, then f (N) the erosion operation and the expansion operation of g (M) are respectively defined as:
(n) the on and off operations for g (m) are defined as:
the on operation can weaken positive pulse noise in sound wave signals of the loudspeaker and eliminate scattered points and burrs; the closed operation has expansibility, can inhibit the negative pulse noise of sound wave signals of the loudspeaker and fill and level the break point. The advantages of the two operators can be simultaneously exerted through reasonable collocation of the two operations.
Referring to fig. 2, which is a schematic diagram illustrating the structural connection of the alarm speaker monitoring device in one embodiment, the wired alarm system includes an alarm speaker 14 and an alarm control device 15, and the alarm speaker 14 and the alarm control device 15 transmit audio signals through a cable 16. The alarm speaker monitoring device is used to detect the alarm speaker 14 of the wired alarm system. The sound pick-up devices 11 are used for picking up audio signals emitted by the loudspeakers 14, converting the audio signals into sound wave signals and outputting the sound wave signals, and each sound pick-up device 11 picks up the audio signal of one alarm loudspeaker 14. The monitoring terminals 12 are configured to receive the sound wave signals, acquire failure information of the alarm speakers 14 according to the sound wave signals, and send the failure information of the alarm speakers 14 to the monitoring host 13, each monitoring terminal 12 receives only the sound wave signal sent by one sound pickup 11, the failure information of the alarm speakers 14 includes whether the alarm speakers 14 are failed and/or ID information of the alarm speakers 14, and the ID information of the alarm speakers 14 is used to distinguish each alarm speaker 14 and corresponds to a spatial position where each alarm speaker 14 is located. The monitoring host 13 is used for receiving and outputting the fault information of the alarm loudspeaker 14. The cable for data communication between the monitoring terminal 12 and the monitoring host 13 is a cable 16 for wired alarm system communication, and the cable for data communication between the monitoring terminal 12 and the monitoring host 13 is shared by the cable 16 for communication between the alarm speaker 14 and the alarm control device 15. In one embodiment, the monitoring host 13 is further configured to output a predetermined pilot audio to the alarm speaker 14 via the cable 16, so as to play the predetermined pilot audio via the alarm speaker 14. In one embodiment, when the alarm speaker 14 plays the alarm signal, the sound pickup 11 starts to pick up the audio signal played by the alarm speaker 14. In one embodiment, the monitoring terminal obtains a characteristic signal of the sound wave signal according to the sound wave signal, and obtains the fault information of the alarm speaker 14 according to the characteristic signal, where the characteristic signal includes the sound wave characteristic signal such as the waveform, frequency, amplitude and/or phase of the sound wave signal. In one embodiment, the sum of the number of microphones of all of the speaker monitoring devices is the same as the number of alarm speakers 14 of the wired alarm system. In one embodiment, the monitoring terminal 12 and the monitoring host 13 perform data communication in a power line carrier communication manner. And/or the power supply of the monitoring terminal 12 is provided by the monitoring host 13.
The working process of the alarm speaker monitoring device in the embodiment is as follows:
step 101, an alarm loudspeaker plays preset guide audio or alarm audio;
the monitoring host can send the preset pilot audio to the alarm loudspeaker so as to play the preset pilot audio through the alarm loudspeaker, and the alarm loudspeaker can be controlled to play the alarm audio.
Step 102, collecting preset pilot audio or alarm audio emitted by an alarm loudspeaker by a sound pick-up;
a sound pick-up may be provided at the sound emitting port of the alarm speaker to convert the audio signal emitted from the alarm speaker into a sound wave signal, and in this embodiment, the sound is preferably converted into a digital signal at a sampling rate of 44 k.
Step 103, filtering the sound wave signal;
the monitoring terminal performs noise reduction processing on the sound wave signal by adopting a morphological filtering method, so that the influence of background noise on a detection result is avoided.
Step 104, extracting characteristic signals in the sound wave signals;
the characteristic signal includes acoustic characteristic signals such as waveform, frequency, amplitude and/or phase of the acoustic signal.
Step 105, detecting the characteristic signal;
because the alarm loudspeaker plays the preset pilot frequency or the alarm audio frequency, the tone, the intensity and the tone of the sound played by the alarm loudspeaker can be detected only by comparing the characteristic signal with the characteristic signal of the preset pilot frequency or the alarm audio frequency, and then the detection of each parameter of the alarm loudspeaker is realized to obtain the fault information of the alarm loudspeaker.
Step 106, the monitoring host inquires the detection result of the monitoring terminal;
after the monitoring terminal acquires the parameter information of the alarm loudspeaker and the fault information of the loudspeaker, the monitoring host starts to send a command for returning a detection result to the monitoring terminal according to a preset sequence, and the monitoring terminal returns detection result data to the monitoring host immediately after receiving the command. This communication is a power carrier communication technique using the audio line of the alarm speaker as a medium. Namely, the monitoring terminal and the monitoring host adopt a power carrier communication mode for data communication. In one embodiment, the power supply of the monitoring terminal is provided by the monitoring host through an audio line of the alarm loudspeaker.
Referring to fig. 3, a schematic diagram of a structural connection of the monitoring host in an embodiment includes m PLC master communication modules 131, configured to perform data communication with the monitoring terminal 12, and further configured to provide a power supply for the monitoring terminal 12, where m is 1, 2, or an integer greater than 2. The audio output module 132 is configured to output a preset pilot audio to the alarm speaker 14, so as to play the preset pilot audio through the alarm speaker 14. The power source 133 is used to provide power to the monitoring host, and in one embodiment, the power source 133 includes an inverter circuit of a dc-ac-dc type. The microprocessor 134 is used for controlling the on-off state of the monitoring terminal 12 through the PLC master communication module 131, and/or is also used for acquiring the fault information of the alarm speaker 14 and outputting the fault information to the wired alarm system monitoring server through the ethernet network. The memory 135 is used to store failure information of the alarm speaker 14. Each PLC master communication module 131 is connected to the alarm control device 15 of one cable alarm system, and is used to acquire the failure information of each alarm speaker 14 connected to the alarm control device 15 of the cable broadcast system. In one embodiment, the monitoring host further includes an ethernet card 136 for connecting to an ethernet connection, so as to output the acquired failure information of the speaker 14 acquired by each monitoring terminal 12 through the ethernet network 30.
Referring to fig. 4, a flow chart of a detection method of a wired alarm system in an embodiment is shown, which includes:
step 201, an alarm speaker plays audio;
an alarm loudspeaker of the wired alarm system plays preset pilot audio or alarm audio;
step 202, acquiring a sound wave signal;
the sound pick-up picks up the audio signal emitted by the alarm speaker and converts the audio signal into a sound wave signal.
Step 203, acquiring fault information of the loudspeaker;
and the monitoring terminal acquires the fault information of the alarm loudspeaker according to the sound wave signal and sends the fault information of the alarm loudspeaker to the monitoring host. The monitoring terminal comprises a monitoring terminal body, a sound wave collector, an alarm loudspeaker and an alarm loudspeaker, wherein each monitoring terminal only receives a sound wave signal sent by one sound collector, fault information of the alarm loudspeaker comprises whether the alarm loudspeaker is in fault and/or ID information of the alarm loudspeaker, and the ID information of each alarm loudspeaker corresponds to position information of the alarm loudspeaker. The cable used for the data communication between the monitoring terminal and the monitoring host is a cable for the communication of the wired alarm system.
Step 204, the monitoring host receives the fault information of the alarm loudspeaker and sends the fault information to a wired alarm system monitoring server through the Ethernet;
the number of the monitoring hosts is p, and p is 1, 2 or an integer greater than 2. The monitoring server of the wired alarm system distinguishes each monitoring host according to the IP address of the monitoring host, and the monitoring hosts sequentially send the fault information of the alarm loudspeaker to the monitoring server of the wired alarm system according to a preset sequence. The wired alarm system monitoring server stores the acquired fault information of the alarm speaker in a database.
In step 205, the wired alarm system monitoring server monitors fault information for each alarm speaker of the wired alarm system.
After receiving all the fault information of the alarm loudspeaker sent by the monitoring host, sequentially inquiring the fault information of the alarm loudspeaker in the database according to a preset sequence, acquiring the ID information of the fault alarm loudspeaker, and acquiring the position information of the fault alarm loudspeaker according to the ID information of the fault alarm loudspeaker.
Step 206, sending out fault alarm prompt information when the alarm loudspeaker is in fault;
the fault alarm prompt message comprises the position information of the fault alarm. The fault type information may also include, among other things, tone, audio and/or sound intensity information for the speaker.
In an application scene of construction of a detection system of a nuclear power station wired alarm system, the design needs to be carried out according to the field conditions of the nuclear power station, the range of sound frequency and loudness of the detected alarm loudspeaker needs to be wide, a large number of alarm loudspeakers capable of being detected simultaneously need to be met, and free switching between manual and automatic inspection modes needs to be met. In the embodiment of the application, the detection system of the wired alarm system is suitable for the wired alarm system with the working voltage of 220V, the sound frequency range of the detected alarm loudspeaker is 50Hz-20kHz, and the sound loudness range is 0-120 dB. Firstly, picking up sound wave signals when preset pilot frequency or alarm frequency is played by an alarm loudspeaker, filtering the picked sound wave signals by a morphological filtering method, then extracting the characteristic information of the obtained sound wave signals, and judging whether the alarm loudspeaker has faults or not by judging whether the characteristic information is in a preset threshold range or not, so that the identification accuracy of a monitoring system can be improved. The detection system of the wired alarm system in the embodiment of the application adopts multi-functional amplification parallel detection, and the detection speed of the same monitoring branch can reach 300/min. The electric energy conversion module and the communication module which are required by the monitoring terminal, the monitoring host and the monitoring server are isolated from the original audio circuit, so that the modules are not interfered with each other when the equipment works, and meanwhile, the normal work of the alarm loudspeaker of the existing wired alarm system is not influenced. The communication between the monitoring host and the monitoring terminal is completed by adopting a mature and advanced PLC (programmable logic controller) special wired communication chip, the frequency of a communication signal is greater than 100kHz, the far-away alarm audio frequency is realized, and the isolation is high. The circuit of the wired alarm system is used for carrying out wired communication, the existing audio circuit of the alarm loudspeaker is used for transmitting detection signals, state detection and data return are achieved, and construction and deployment workloads are extremely small. The detection system of the whole wired alarm system takes electromagnetic compatibility and environmental reliability into consideration in design, meets the requirements of specific application and use environment, and is convenient for field installation and debugging. In an application embodiment, the detection system of the wired alarm system adopts an industrial processor, a storage chip and a communication chip, the highest working temperature range can reach-40 ℃ to +85 ℃, the detection system has good reliability under extreme working environment, the power consumption of the monitoring terminal is less than 0.5W, electric energy is obtained from the monitoring host through an audio line, the power supply design of the monitoring terminal is simplified, and a large capacitor or a battery is not needed to be used as energy storage. The power consumption of the monitoring host is less than 10W, and the monitoring host can enter a polling state at any time. In an application embodiment, the detection system of the wired alarm system can be freely switched between a manual inspection mode and an automatic inspection mode. Still for automatic inspection mode, can carry out automatic inspection according to set time and mode through configuration wired alarm system monitoring server, need not artifical the participation, accurate high efficiency.
Example two
Referring to fig. 5, a schematic flow chart of a detection method of a wired alarm system in another embodiment includes:
step 301, a preparation stage is monitored;
the monitoring host computer is electrified, and the monitoring server of the wired alarm system establishes Ethernet communication with each monitoring host computer.
Step 302, starting a monitoring service program of the monitoring server of the wired alarm system, wherein the monitoring server of the wired alarm system prepares for relevant detection data transmitted by the monitoring host at any time;
step 302, the tested alarm speaker starts working;
the alert speaker begins playing an audio signal, preferably a preset pilot audio. In one embodiment, the preset pilot frequency is 100Hz, the amplitude is 2.5Vpp, and the duration is 1.5min, so as to excite the terminal alarm speaker to sound and provide power for the monitoring terminal.
Step 303, the monitoring program of the monitoring server of the wired alarm system starts to acquire the fault information sent by the monitoring host;
in one embodiment, the monitoring server of the wired alarm system distinguishes each monitoring host according to the IP address of each monitoring host in the Ethernet, and can sequentially acquire monitoring data sent by each monitoring host according to a preset sequence;
304, each monitoring host sequentially acquires fault information sent by the monitoring terminal, packs monitoring data after acquiring all the fault information and sends the monitoring data to a monitoring server of the wired alarm system;
the monitoring terminal converts alternating current signals on the audio line into direct current signals through AC/DC (24Vac/18Vdc) to supply power to the monitoring terminal. And the monitoring terminal establishes PLC communication with the monitoring host after normal power supply. In one embodiment, the monitoring terminal includes a phase-lock detection module to detect the frequency of the sound wave signal of the speaker, and compares the frequency data with a preset threshold value according to the detection to determine the fault information of the alarm speaker. And each monitoring terminal transmits the detection result back to the monitoring host through PLC communication. In one embodiment, the monitoring host packs all the acquired fault information and sends the packed fault information as monitoring data to the monitoring server of the wired alarm system.
Step 305, finishing the inspection;
the wired alarm system monitoring server writes the acquired monitoring data into a database, distinguishes each monitoring host according to the IP address of the monitoring host, and stops receiving after acquiring the monitoring data of all the monitoring hosts in sequence according to a preset sequence and writing the monitoring data into the database so as to finish inspection.
Step 306, sending out an alarm;
and the monitoring server of the wired alarm system analyzes the monitoring data in sequence and sends alarm information when detecting that the alarm loudspeaker generates sound fault. In one embodiment, the whole detection process of the monitoring server of the wired alarm system is executed twice, namely, the loop is executed once, the time interval between the two steps is 30s, and the finally displayed detection result is the integration of the two detection steps, and the integration principle is as follows:
(1) waiting for detection plus waiting for detection;
(2) the alarm loudspeaker is normal when the to-be-detected alarm loudspeaker is normal;
(3) the fault of the alarm loudspeaker is detected;
(4) the alarm loudspeaker is normal plus the alarm loudspeaker is normal, namely the alarm loudspeaker is normal;
(5) alarm speaker normal + alarm speaker failure-alarm speaker normal;
(6) alarm speaker failure + alarm speaker failure-alarm speaker failure.
And 307, stopping alarming when all the fault alarm loudspeakers are confirmed to be repaired, and ending the monitoring program.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by computer programs. When all or part of the functions of the above embodiments are implemented by a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a read only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to realize the above functions. For example, the program may be stored in a memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above may be implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and may be downloaded or copied to a memory of a local device, or may be version-updated in a system of the local device, and when the program in the memory is executed by a processor, all or part of the functions in the above embodiments may be implemented.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A detection system for a wired alarm system, the wired alarm system comprising q alarm speakers, wherein the detection system is configured to detect the alarm speakers of the wired alarm system; the detection system comprises a wired alarm system monitoring server, an Ethernet and p alarm loudspeaker monitoring devices; the wired alarm system monitoring server is respectively connected with each alarm loudspeaker monitoring device through the Ethernet; wherein q and p are each 1, 2 or an integer greater than 2;
each alarm loudspeaker monitoring device comprises n sound collectors, monitoring terminals and a monitoring host, wherein the number of the monitoring terminals is the same as that of the sound collectors; wherein n is 1, 2 or an integer greater than 2;
the sound pick-up is used for picking up an audio signal sent by the alarm loudspeaker, converting the audio signal into a sound wave signal and outputting the sound wave signal; each of the microphones picking up an audio signal of one of the alarm speakers;
the monitoring terminal is used for receiving the sound wave signal, acquiring fault information of the alarm loudspeaker according to the sound wave signal and sending the fault information of the alarm loudspeaker to the monitoring host; the cable used for the data communication between the monitoring terminal and the monitoring host computer is shared with the cable used for the communication between the wired alarm system and the cable used for the data communication between the monitoring terminal and the monitoring host computer; each monitoring terminal only receives a sound wave signal sent by one sound pickup; the failure information of the alarm speaker includes whether the alarm speaker is failed and/or ID information of the alarm speaker;
the monitoring host is used for receiving the fault information of the alarm loudspeaker and sending the fault information to the wired alarm system monitoring server through the Ethernet;
the wired alarm system monitoring server is used for monitoring the fault information of each alarm loudspeaker of the wired alarm system and sending out fault alarm prompt information when the alarm loudspeaker is detected to be in fault.
2. The detection system according to claim 1, wherein the malfunction warning notice information includes position information of the warning speaker in which a malfunction occurs;
the wired alarm system monitoring server distinguishes each alarm loudspeaker monitoring device according to the IP address of the monitoring host; and/or the ID information of each alarm loudspeaker corresponds to the position information of the alarm loudspeaker, and the wired alarm system monitoring server determines the position information of each alarm loudspeaker according to the ID information of the alarm loudspeaker.
3. The detection system of claim 1, wherein the monitoring host is further configured to output a predetermined pilot tone to the alarm speaker for playback through the alarm speaker.
4. The detection system according to claim 3, wherein the monitoring terminal acquires a characteristic signal of the sound wave signal according to the sound wave signal and acquires fault information of the alarm speaker according to the characteristic signal; the characteristic signal comprises a waveform, a frequency, an amplitude and/or a phase of the acoustic wave signal.
5. The detection system according to claim 4, wherein the monitor terminal obtains the characteristic signal after performing noise reduction processing on the sound wave signal by using a morphological filtering method.
6. The detection system according to claim 1, wherein the monitoring terminal and the monitoring host machine are in data communication in a power carrier communication mode; and/or the power supply of the monitoring terminal is provided by the monitoring host.
7. The detection system of claim 6, wherein the monitoring host comprises:
the m PLC master control communication modules are used for carrying out data communication with the monitoring terminal; and/or, the power supply is provided for the monitoring terminal; wherein m is 1, 2 or an integer greater than 2;
the audio output module is used for outputting the preset guide audio to the alarm loudspeaker so as to play the preset guide audio through the alarm loudspeaker;
the power supply is used for providing power for the monitoring host;
the microprocessor is used for controlling the on-off state of the monitoring terminal through the PLC master control communication module; and/or, the monitoring server is also used for acquiring the fault information of the alarm loudspeaker and outputting the fault information to the wired alarm system monitoring server;
a memory for storing fault information of the alarm speaker;
and the Ethernet card is used for connecting the monitoring host with the Ethernet.
8. A method of detecting a wired alarm system, comprising:
an alarm loudspeaker of the wired alarm system plays preset pilot audio or alarm audio;
the sound pick-up picks up the audio signal sent by the alarm loudspeaker and converts the audio signal into a sound wave signal;
the monitoring terminal acquires the fault information of the alarm loudspeaker according to the sound wave signal and sends the fault information of the alarm loudspeaker to the monitoring host; each monitoring terminal only receives a sound wave signal sent by one sound pickup; the fault information of the alarm loudspeaker comprises whether the alarm loudspeaker is in fault and/or ID information of the alarm loudspeaker, and the ID information of each alarm loudspeaker corresponds to the position information of the alarm loudspeaker; wherein, the cable used for the data communication between the monitoring terminal and the monitoring host is the cable for the wired alarm system communication;
the monitoring host receives the fault information of the alarm loudspeaker and sends the fault information to a wired alarm system monitoring server through an Ethernet;
the wired alarm system monitoring server monitors fault information of each alarm loudspeaker of the wired alarm system;
and sending fault alarm prompt information when the alarm loudspeaker breaks down, wherein the fault alarm prompt information comprises the position information of the alarm with the fault.
9. The method for testing as claimed in claim 8, wherein said monitoring host receiving fault information of said alarm speaker and transmitting to a wired alarm system monitoring server via an ethernet network comprises:
p monitoring hosts are provided, and p is 1, 2 or an integer greater than 2; the wired alarm system monitoring server distinguishes each monitoring host according to the IP address of the monitoring host; and the monitoring host sequentially sends the fault information of the alarm loudspeaker to the wired alarm system monitoring server according to a preset sequence.
10. The method for detecting as claimed in claim 9, wherein said wired alarm system monitoring server monitors fault information of each of said alarm speakers of said wired alarm system, including:
the wired alarm system monitoring server stores the acquired fault information of the alarm loudspeaker in a database, after receiving the fault information of the alarm loudspeaker sent by all the monitoring hosts, sequentially inquires the fault information of the alarm loudspeaker in the database according to a preset sequence, acquires the ID information of the alarm loudspeaker with the fault, and acquires the position information of the alarm loudspeaker with the fault according to the ID information of the alarm loudspeaker with the fault.
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| CN201911419889.6A CN111063175A (en) | 2019-12-31 | 2019-12-31 | Detection system and method of wired alarm system |
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Application publication date: 20200424 |