CN110853270A - Optical fiber intrusion alarm processing method based on LabVIEW - Google Patents
Optical fiber intrusion alarm processing method based on LabVIEW Download PDFInfo
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- CN110853270A CN110853270A CN201910958526.3A CN201910958526A CN110853270A CN 110853270 A CN110853270 A CN 110853270A CN 201910958526 A CN201910958526 A CN 201910958526A CN 110853270 A CN110853270 A CN 110853270A
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- signal
- intrusion
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- alarm
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
Abstract
The invention discloses an optical fiber intrusion alarm processing method based on LabVIEW, which comprises an alarm monitoring host, wherein a LabVIEW signal processing platform is installed in the alarm monitoring host, and the LabVIEW signal processing platform provides a waveform data processing flow, and the method comprises the following steps: the first step is as follows: carrying out analog test on the optical fiber intrusion alarm signal, recording the tested analog intrusion signal and the intrusion and interference mixed signal by using a graphic recorder, and determining and recording an intrusion signal judgment parameter and an interference signal judgment parameter according to the record of the graphic recorder; the second step is that: starting a LabVIEW signal processing platform, opening a waveform data processing flow parameter input window in a screen, and inputting recorded intrusion signal judgment parameters and interference signal judgment parameters into the input window through a keyboard; the third step: and starting a waveform data processing flow to monitor the optical fiber access signal in real time, and outputting an alarm when the intrusion signal is detected.
Description
Technical Field
The invention relates to the field of photoelectric technology, in particular to an optical fiber intrusion alarm processing method based on LabVIEW.
Background
With the progress of optical fiber technology, an optical fiber perimeter intrusion alarm system based on light wave interference already uses a security system, an alarm monitoring host in the intrusion alarm system needs to process light wave interference signals received from a photoelectric detector to judge whether intrusion exists, however, the alarm monitoring host needs a set of processing software to process the received signals, at present, an inventor works out original data by himself to process the original data, the interference signals need to be distinguished and processed, the working process is complicated, the processed data volume is large, the speed is slow, and the received waveforms cannot be output in real time.
Disclosure of Invention
The invention aims to provide an optical fiber intrusion alarm processing method based on LabVIEW, which utilizes a processing platform of the LabVIEW to directly input a received waveform into a receiving end of the processing platform of the LabVIEW, simplifies the programming process, and can output a signal waveform and store data in real time.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an optical fiber intrusion alarm processing method based on LabVIEW comprises an alarm monitoring host, wherein a LabVIEW signal processing platform is installed in the alarm monitoring host, and the LabVIEW signal processing platform provides a waveform data processing flow, and the method comprises the following steps:
the first step is as follows: carrying out analog test on the optical fiber intrusion alarm signal, recording the tested analog intrusion signal and the intrusion and interference mixed signal by using a graphic recorder, and determining and recording an intrusion signal judgment parameter and an interference signal judgment parameter according to the record of the graphic recorder;
the second step is that: starting a LabVIEW signal processing platform, opening a waveform data processing flow parameter input window in a screen, and inputting recorded intrusion signal judgment parameters and interference signal judgment parameters into the input window through a keyboard;
the third step: and starting a waveform data processing flow to monitor the optical fiber access signal in real time, and outputting an alarm when the intrusion signal is detected.
The scheme is further as follows: the waveform data processing flow also comprises a waveform output function, wherein the opened waveform data processing flow parameter input window comprises a sampling start time, a sampling interval time, sampling data and a waveform attribute window, and the waveform can be output by inputting parameters according to the sampling start time, the sampling interval time, the sampling data and the waveform attribute;
wherein: the sampled data is a 1-dimensional array and the waveform attributes are data attributes required for accessing the display.
The scheme is further as follows: the waveform data is stored in tdms format data.
The scheme is further as follows: the alarm output comprises hardware main contact point output and software TCP protocol output, the hardware main contact point output is output through a data acquisition card, and the software TCP protocol output is used for sending a system state to a client through a software TCP protocol in real time to monitor the network connection condition.
The invention directly inputs the received signals by means of a processing platform of LabVIEW, can directly obtain the result by inputting necessary control parameters, simplifies the compilation process, has the advantages of safety, reliability, no radiation, interference resistance, strong environmental adaptability, high sensitivity and the like, and has wide market application prospect in the field of industrial and civil safety monitoring.
Detailed Description
LabVIEW is a program development environment, developed by National Instruments (NI) corporation of america, similar to the C and BASIC development environments, but the significant differences between LabVIEW and other computer languages are: other computer languages all adopt the language based on text to produce the code, and LabVIEW uses the graphical editing language G to compile the program, can give full play to the ability of computer, have powerful data processing function, can create the instrument of the more powerful, apply LabVIEW to the early warning system of optic fibre, data acquisition and data processing speed are faster, better shortening development cycle. The optical fiber early warning system based on LabVIEW has the characteristics of high sensitivity, low false alarm and missing report rate, good stability and the like.
The fiber intrusion alarm processing method based on LabVIEW comprises an alarm monitoring host, wherein a LabVIEW signal processing platform is installed in the alarm monitoring host, and the LabVIEW signal processing platform provides a waveform data processing flow, and the method comprises the following steps:
the first step is as follows: carrying out analog test on the optical fiber intrusion alarm signal, recording the tested analog intrusion signal and intrusion and interference mixed signal by using a graphic recorder (paper), determining and recording an intrusion signal judgment parameter (an intrusion signal threshold value or a signal short-time domain characteristic) and an interference signal judgment parameter (an interference signal threshold value for shielding false alarm caused by environmental factors such as wind, rain, snow and the like) according to the record of the graphic recorder;
the second step is that: starting a LabVIEW signal processing platform, opening a waveform data processing flow parameter input window in a screen, and inputting recorded intrusion signal judgment parameters and interference signal judgment parameters into the input window through a keyboard;
the third step: starting a waveform data processing flow to monitor an optical fiber access signal in real time, and outputting an alarm when an invasion signal is detected; the discrimination process is carried out by means of probability and statistics provided by LabVIEW and a signal processing tool kit.
In the examples: the waveform data processing flow also comprises a waveform output function, wherein the opened waveform data processing flow parameter input window comprises a sampling start time t0, a sampling interval time dt, sampling data Y and a waveform attribute window, and the waveform can be output by inputting parameters according to the sampling start time, the sampling interval time, the sampling data and the waveform attribute;
wherein: the sampled data is a 1-dimensional array and the waveform attributes are data attributes required for accessing the display.
In the examples: the waveform data is stored in tdms format data.
The data acquisition function of this embodiment: the data acquisition function of the acquisition card and the LabVIEW acquires data, and when the acquisition function is clear, the configured data acquisition task is guided into the LabVIEW, so that a LabVIEW code can be automatically generated. The optical fiber early warning system is used for inputting a multi-channel analog voltage signal, the acquisition card works in a continuous sampling mode, the size of a sampling cache region is controlled by adjusting the sampling number of each channel, and the instantaneity of the system can be improved by the small size of the cache region. The collection cycle is 'producer', the collected data is sent to the queue in a waveform form, the queue is equivalent to 'stack', data exchange in different threads can be realized, meanwhile, the queue is reference-transmitting, and the same queue can be operated in different threads, so that redundant memory allocation caused by transmission value is avoided.
The data processing function of the present embodiment: the data processing cycle is "consumer" and waveform data is read from the queue. Waveform data is a data type specific to LabVIEW, and contains 4 elements: t0 (sample start time), dt (sample interval time), Y (sample data, 1-dimensional array), attributes (waveform attributes). And the data curve display function is very conveniently realized by combining the oscillogram control. The data is stored in a tdms format, and the tdms is a binary file for storing waveform attributes and waveform data, and has the advantages of high precision of floating point numbers, small occupied disk space and high storage speed. The optical fiber early warning system is a vibration detection system, is sensitive to surrounding sound wave signals, and can realize sound playing by inputting waveform data into a sound playing VI after configuring a sound output format according to sampling frequency.
Wherein: the alarm output comprises hardware dry contact output and software TCP (transmission control protocol) output, the hardware dry contact output is output through a data acquisition card, the acquisition card has a multi-channel synchronous digital I/O (input/output) function, a digital pulse signal is output by adopting a time delay VI, and the output of normally open and normally closed signals can be realized by combining a level conversion chip and a relay. The software TCP protocol output is to send the system state to the client end through the software TCP protocol in real time to monitor the network connection condition, once the client end establishes the connection, the system state information is sent at regular time, and the interception is carried out when the network is disconnected.
Claims (4)
1. An optical fiber intrusion alarm processing method based on LabVIEW comprises an alarm monitoring host, wherein a LabVIEW signal processing platform is installed in the alarm monitoring host, and the LabVIEW signal processing platform provides a waveform data processing flow, and is characterized by comprising the following steps:
the first step is as follows: carrying out analog test on the optical fiber intrusion alarm signal, recording the tested analog intrusion signal and the intrusion and interference mixed signal by using a graphic recorder, and determining and recording an intrusion signal judgment parameter and an interference signal judgment parameter according to the record of the graphic recorder;
the second step is that: starting a LabVIEW signal processing platform, opening a waveform data processing flow parameter input window in a screen, and inputting recorded intrusion signal judgment parameters and interference signal judgment parameters into the input window through a keyboard;
the third step: and starting a waveform data processing flow to monitor the optical fiber access signal in real time, and outputting an alarm when the intrusion signal is detected.
2. The optical fiber intrusion alarm processing method according to claim 1, wherein the waveform data processing flow further includes a waveform output function, and the opened waveform data processing flow parameter input window includes a sampling start time, a sampling interval time, sampling data and a waveform attribute window, and a waveform can be output by inputting parameters according to the sampling start time, the sampling interval time, the sampling data and the waveform attribute;
wherein: the sampled data is a 1-dimensional array and the waveform attributes are data attributes required for accessing the display.
3. The fiber optic intrusion alarm processing method of claim 2, wherein the waveform data is stored in tdms format data.
4. The method according to claim 1, wherein the alarm output includes a hardware dry contact output and a software TCP protocol output, the hardware dry contact output is output through a data acquisition card, and the software TCP protocol output is real-time system status is sent to a client through a software TCP protocol to monitor network connection.
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Citations (5)
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| CN103236127A (en) * | 2013-05-06 | 2013-08-07 | 无锡成电光纤传感科技有限公司 | Fiber fence intrusion monitoring system and pattern recognition method thereof |
| CN106297124A (en) * | 2016-09-07 | 2017-01-04 | 北京航天易联科技发展有限公司 | A kind of anti-interference processing method of fiber optic intrusion warning system |
| CN107862821A (en) * | 2017-12-12 | 2018-03-30 | 上海师范大学 | A kind of perimeter security system |
| WO2018209220A1 (en) * | 2017-05-11 | 2018-11-15 | The Trustees Of Princeton University | Binocular vision occupancy detector |
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- 2019-10-10 CN CN201910958526.3A patent/CN110853270A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930649A (en) * | 2010-08-20 | 2010-12-29 | 宁波诺可电子科技发展有限公司 | Method for preventing false alarm under severe weather conditions for fiber fence alarm system |
| CN103236127A (en) * | 2013-05-06 | 2013-08-07 | 无锡成电光纤传感科技有限公司 | Fiber fence intrusion monitoring system and pattern recognition method thereof |
| CN106297124A (en) * | 2016-09-07 | 2017-01-04 | 北京航天易联科技发展有限公司 | A kind of anti-interference processing method of fiber optic intrusion warning system |
| WO2018209220A1 (en) * | 2017-05-11 | 2018-11-15 | The Trustees Of Princeton University | Binocular vision occupancy detector |
| CN107862821A (en) * | 2017-12-12 | 2018-03-30 | 上海师范大学 | A kind of perimeter security system |
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Application publication date: 20200228 |