CN200989821Y - Fire detection testing instrument - Google Patents
Fire detection testing instrument Download PDFInfo
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- CN200989821Y CN200989821Y CN 200620049388 CN200620049388U CN200989821Y CN 200989821 Y CN200989821 Y CN 200989821Y CN 200620049388 CN200620049388 CN 200620049388 CN 200620049388 U CN200620049388 U CN 200620049388U CN 200989821 Y CN200989821 Y CN 200989821Y
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- detecting
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- fire
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Abstract
A flame detecting and testing instrument is provided, which comprises a computer, a simulated flame infrared light supply connected with the computer, a display apparatus, a performance indicator light of the flame detecting and testing detector, an A/D conversion module, a modal switch, an intensity threshold switch, an analog voltage signal generating circuit, a preprocessing circuit connected with the input terminals of the A/D conversion module, a detecting circuit and a control treatment system positioned inside the computer. The control treatment system controls intensity and frequency of simulated furnace flame signals which are generated by the simulated flame infrared light supply and the analog voltage signal generating circuit, and processes digital signals that output by the pending flame detecting and testing detector and converted by the preprocessing circuit and the A/D conversion module. The result is directly displayed by the display apparatus and the indicator light. The detecting circuit is connected with output terminals of the pending flame detecting and testing amplifier, which generates the analog signals and the switch signals for detecting. The detecting and testing instrument improves inaccuracy caused by instability of the reference light and individual difference of the flame detecting and testing detector and the flame detecting and testing amplifier.
Description
Technical field
The utility model relates to a kind of fire detection test instrument, particularly relates to a kind of flame detecting probe of infra red flame detecting device and fire detection test instrument that fire is examined the Function detection of amplifier of being used for.
Background technology
Along with the widespread use of flame detecting probe (IDD), fire inspection amplifier and similar flame detector, with the detection of its correlation function also gradually important in occasions such as boiler of power plant.Yet at present for the detection means relative complex of flame detecting probe and fire inspection amplifier and not accurate enough directly perceived.Mainly detect at present by following mode: with visible light sources such as daylight lamps as the simulating flame Combustion Source.Flame detecting probe and fire inspection amplifier are assembled into together, by contrast of measuring several flame detecting probes and several fire inspection amplifier parameters and then the function of judging relevant flame detector.Because simulating flames such as daylight lamp burning light source is the power frequency visible light, and is bigger with boiler combustion flame difference on the wavelength of frequency and detected light, so testing result is not accurate enough.Need flame detecting probe simultaneously and fire inspection amplifier because testing process needs simulating flame light source such as daylight lamp, trace routine is complicated and not directly perceived, and what especially adopt is that the cassette amplifier extremely is inconvenient to operate.
Summary of the invention
Detection efficiency and the detection accuracy of the utility model in order to improve flame monitor integrated simulating flame infrared light supply, analog voltage signal generation circuit and digital intuitively the demonstration, and a kind of fire detection test instrument is provided.The purpose of this utility model is simulating flame infrared light supply and the analog voltage signal generation circuit by the simulation boiler flame, and the fire detection test instrument of a kind of efficient detection flame detecting probe and fire inspection amplifier is provided.
For realizing above-mentioned purpose, the technical solution adopted in the utility model is: a kind of fire detection test instrument is provided, it comprises: computing machine, the A/D modular converter that is connected with computing machine, the simulating flame infrared light supply of simulation boiler flame signal, display, flame detecting probe performance pilot lamp, mode switch and analog voltage signal generation circuit, for the flame detecting probe support to be measured of putting flame detecting probe to be measured, output terminal is connected the pre-process circuit on the A/D modular converter input end, be connected in the intensity driving switch between computing machine and the analog voltage signal generation circuit, place control processing system and testing circuit in the computing machine, treat that fire detecting inspection amplifier input terminal is connected on the output terminal of analog voltage signal generation circuit, the output terminal for the treatment of fire detecting inspection amplifier is connected on the input end of testing circuit, and the output terminal of flame detecting probe to be measured is connected on the input end of pre-process circuit.
The described interior control processing system of computing machine that places comprises receiver module, the pattern judge module that is connected with receiver module, flame detecting probe detecting pattern module that is connected with the pattern judge module respectively and fire inspection amplifier detecting pattern module, and be connected in flame detecting probe detecting pattern module and the fiery mode switch module of examining between the amplifier detecting pattern module.
Comprise in the described flame detecting probe detecting pattern module and transmit the instruction sub-module and judge flame detecting probe function sub-module to be measured.
Described fire inspection amplifier detecting pattern module comprises emission voltage signal instruction module.
As above-mentioned structure, control by control processing system in the computing machine by placing for the utility model, judgment processing etc., adopts the simulating flame infrared light supply of emission infrared band light beam to produce the infrared beam that flashes that is similar to the boiler flame frequency under the control of control processing system.When detecting the function of flame detecting probe, flame detecting probe to be measured is seated on the flame detecting probe support to be measured, and makes flame detecting probe to be measured aim at the simulating flame infrared light supply; Be connected on the input end of pre-process circuit by the output terminal of (at least 4 core) cable flame detecting probe to be measured; Detect the flame detecting probe pattern by the control processing system input of mode switch in placing computing machine that is connected on the computing machine, pattern judge module in the control processing system judges it is to detect the flame detecting probe pattern, then detecting pattern is transformed on the flame detecting probe detecting pattern module; After the starting of flame detecting probe detecting pattern module, at first be to transmit to instruct sub-module to send the instruction of emission light signal to the simulating flame infrared light supply; Flame detecting probe to be measured receives the light signal of simulating flame infrared light supply emission and converts its light signal to corresponding electric signal and is input in the pre-process circuit; Pre-process circuit carries out every straight (every removing direct current signal) its signal, preposition amplification, filtering (elimination undesired signal), after main amplification (signal is amplified again) and the rectification, the output dc voltage signal converts its voltage analog signal to digital signal through the A/D modular converter and is input in the judgement flame detecting probe function to be measured sub-module in the flame detecting probe detecting pattern module, judge that flame detecting probe function sub-module to be measured handles its digital signal, judge the function of flame detecting probe by signal intensity in more effective corresponding wave band and reference signal intensity, its function demonstrates by being connected on display on the computing machine and the flame detecting probe pilot lamp;
When detecting the function of fire inspection amplifier, will treat that fire detecting inspection amplifier input terminal is connected on the output terminal of analog voltage signal generation circuit, treat that the output terminal of fire detecting inspection amplifier is connected on the input end of testing circuit; Detect fire inspection amplifier pattern by the control processing system input of mode switch in placing computing machine that is connected on the computing machine; Pattern judge module in the control processing system judge be detect fire inspection amplifier pattern then control processing system be transferred on the fire inspection amplifier detecting pattern module; Fire inspection amplifier detecting pattern module receives starting order and from being connected on the computing machine after the selection that receives intensity on the intensity driving switch, emission voltage signal instruction module in the fire inspection amplifier detecting pattern module sends instruction from the emission voltage signal to analog voltage signal generation circuit, make analog voltage signal generation circuit produce the voltage signal that the scene that is similar to is installed in the flame detecting probe output on the boiler, this voltage signal is input to be treated in the fire detecting inspection amplifier, measure the signal of its output by being connected the metering circuit for the treatment of on the fire detecting inspection amplifier out, determine from the output of testing circuit and treat the good and bad of fire detecting inspection amplifier function.
The utility model fire detection test instrument has significant advantage.
● the utility model is launched the output signal that the light signal that is similar to boiler combustion flame detects flame detecting probe by the simulating flame infrared light supply in effective wave band of simulation boiler combustion flame frequency, by placing the control processing system in the computing machine that its useful signal is handled the function of judging flame detecting probe, and show its detection architecture intuitively by display and pilot lamp;
● the voltage signal that the utility model is launched as the analog voltage signal generation circuit of benchmark by the intensity and the frequency of the voltage signal of the flame detecting probe output of simulated field boiler erection is input to be treated on the fire detecting inspection amplifier, more true and reliable by the output signal for the treatment of fire detecting inspection amplifier that metering circuit is measured;
● the utility model can verification amplifier parameter make it the intensity driving switch that is connected between computing machine and the analog voltage signal generation circuit to adapt with rig-site utilization because comprise under manual cooperation;
● the utility model detects flame detecting probe and fire inspection amplifier by placing the control processing system in the computing machine because adopt the true burned flame signal of simulated field boiler and simulate analog voltage signal in the flame detecting probe output of on-the-spot boiler erection as reference light source and reference signal source.Solved reference light source instability, flame detecting probe because the signal uncertainty of individual difference output, fire inspection amplifier is because the parameter that on-the-spot special applications and individual difference cause is provided with the detection inaccuracy that uncertain factor such as uncertainty causes.
Description of drawings
Fig. 1 is the structural representation of the utility model fire detection test instrument;
Fig. 2 is the structural representation of pre-process circuit among Fig. 1;
Fig. 3 is the structural representation that places the control processing system in the computing machine among Fig. 1;
Fig. 4 is the process flow diagram of control processing system in the utility model fire detection test instrument.
Embodiment
The utility model is further described below in conjunction with accompanying drawing, and the following embodiment of special recommendation:
As shown in Figure 1, fire detection test instrument of the present utility model comprises: computing machine 5, the simulating flame infrared light supply 2 that is connected with computing machine 5, display 3, probe performance pilot lamp 4, A/D modular converter 7, mode switch 12 and analog voltage signal generation circuit 11, the pre-process circuit 8 that is connected with A/D modular converter 7 input ends, place the control processing system 6 in the computing machine 5, be connected in the intensity driving switch 13 between computing machine 5 and the analog voltage signal generation circuit 11, place flame detecting probe support 1 to be measured and testing circuit 9 on simulating flame infrared light supply 2 light paths for storing flame detecting probe to be measured (hereinafter to be referred as the IDD probe), the input end for the treatment of fire detecting inspection amplifier 10 is connected on the output terminal of analog voltage signal generation circuit 11, the output terminal for the treatment of fire detecting inspection amplifier 10 is connected on the input end of testing circuit 9, places the output terminal of the flame detecting probe to be measured on the flame detecting probe support 1 to be measured to be connected on the input end of pre-process circuit 8.
In the present embodiment, described simulating flame infrared light supply 2 is infrarede emitting diodes of simulation boiler combustion flare up fire.
In the present embodiment, described pre-process circuit 8 as shown in Figure 2, it comprises: block isolating circuit 801, one-level advance signal amplifying circuit 802, one-level filtering circuit 803, one-level main amplifying circuit 804, full-wave rectifying circuit 805 and LC filtering circuit.Voltage (or electric current) signal by flame detecting probe output to be measured enters in the pre-process circuit 7, at first process block isolating circuit 801 is every removing direct current signal, through one-level advance signal amplifying circuit 802 signal is amplified, after filtration behind wave circuit 803 (active filter circuit) filtering interference signals, through one-level main amplifying circuit 804 signal is amplified again, by after full-wave rectifying circuit 805 rectifications through LC filtering circuit 806 filtering AC signal, output dc voltage signal; This voltage analog signal converts digital signal to through A/D modular converter 7 and is input to the control processing system 6 that place in the computing machine 5 and handles.
In the present embodiment, described testing circuit 9 is the combinational circuits that are connected with voltage table, reometer, relay and pilot lamp.
In the present embodiment, described analog voltage signal generation circuit 11 comprises: frequency generating circuit, signal transformation circuit and output amplifier.Be that analog voltage signal generation circuit 11 is under the control of control processing system 6, produce and be similar to the voltage signal that on-the-spot boiler flame detecting probe (IDD probe) is exported; Concrete is: frequency generating circuit produces the interior flame of the simulation boiler of being exported with the IDD probe and flashes the identical frequency signal of frequency; Signal transformation circuit with its frequency signal shaping and IDD probe the voltage waveform under the respective frequencies of exporting; The voltage signal of output amplifier after with its shaping amplifies back output.
In the present embodiment, described display is the charactron display.Show by charactron and can be intuitively the sensitivity of flame detecting probe to be shown.For the quality of more direct demonstration flame detecting probe performance to be measured, be connected in the flame detecting probe performance pilot lamp on the computing machine, can be enough red, green light is directly indicated the good and bad of flame detecting probe performance to be measured.
Fig. 3 is the structural representation that the utility model places computing machine 5 inner control disposal systems 6.As shown in Figure 3, comprise in the control processing system 6 of the present utility model: receiver module 601, the pattern judge module 602 that is connected with receiver module 601, probe detecting pattern module 604 that is connected with pattern judge module 602 respectively and amplifier detecting pattern module 603 and be connected in mode switch module 605 between probe detecting pattern module 604 and the amplifier detecting pattern module 603.
As shown in Figure 3, comprise in the described flame detecting probe detecting pattern module 604 to simulating flame infrared light supply 2 and send emission light signal instruction sub-module 6041 that produces the instruction of simulation boiler combustion flame light signal and the output signal that is used to gather the IDD probe, carry out the judgement flame detecting probe function to be measured sub-module 6042 of judgment processing IDD probe performance.
As shown in Figure 3, comprise the emission voltage signal instruction module that is used for analog voltage signal generation circuit is sent the instruction of generation Simulation with I DD probe output voltage signal in the described fire inspection amplifier detecting pattern module 603.
Fig. 4 is the idiographic flow of the control processing system 6 of said structure.
As shown in Figure 4: select detecting pattern by the mode switch 12 (Fig. 1 shows) that is connected on the computing machine 5, be input in the control processing system 6 that places in the computing machine 5, after the starting control processing system 6, carry out following step:
1. at first be that receiver module 601 begins to receive starting detection instruction, and this instruction is imported in next step the module;
2. pattern judge module 602 receives after starting that receiver module 601 imports into detects instruction, judge that its instruction is the pattern that detects the IDD probe, or detect the pattern that fire is examined amplifier, if detect the pattern of IDD probe, its instruction is input in the flame detecting probe detecting pattern module 604; Then its instruction is input in the fire inspection amplifier detecting pattern module 603 if detect the pattern of fire inspection amplifier;
3-1. detect instruction if fire inspection amplifier detecting pattern module 603 receives starting, the program of execution graph 4 drawing upper left sides then, i.e. fire inspection amplifier detecting pattern module 603 judges that at first the signal intensity of selecting is (by the strength signal that is connected in intensity driving switch 13 inputs on the computing machine 5, show as Fig. 1), then, produce the voltage signal of the Simulation with I DD probe output of this intensity according to this strength signal instruction simulation voltage signal generation circuit; In the present embodiment, because this signal is the output voltage signal of the IDD probe of analog detection boiler combustion flare up fire, generally, the frequency of boiler combustion flame is less than 200Hz, so, requiring the frequency of generation ac voltage signal in the present embodiment is 10～100Hz, and amplitude (intensity level) arrives 1V for 100mV.If the variation of outside (adjustment of intensity driving switch) signal intensity is arranged, fire inspection amplifier detecting pattern module can be adjusted the intensity and the frequency of command signal amplifier output voltage signal at any time according to the variation of signal intensity.If detecting pattern changes, then be transformed into and carry out the pattern judgement on the judgment model module 602 again by mode switch module 605;
As above-mentioned, because the light signal of combustion flame is irregular sine wave signal usually, its characteristic frequency region is 20～300 hertz (Hz), so the benchmark simulation voltage signal is the pairing pulse voltage signal of frequency signal that is imitated true application scenario IDD probe under 603 controls of fire inspection amplifier detecting pattern module by analog voltage signal generation circuit, signal transformation circuit shaping in analog voltage signal generation circuit, be amplified to characteristics intensity through output amplifier, this benchmark simulation voltage signal outputed to treat in the fire detecting inspection amplifier again; The output for the treatment of fire detecting inspection amplifier comprises analog voltage amount, analog electrical flow, relay output switching value, can judge the function for the treatment of fire detecting inspection amplifier by voltage table, reometer, relay and switching value pilot lamp that testing circuit provides.In addition, in the present embodiment, can also treat that the manual operator that matches with it on the fire detecting inspection amplifier regulates the parameter for the treatment of fire detecting inspection amplifier by being loaded on, the correlation parameter for the treatment of fire detecting inspection amplifier is complementary with the canonical parameter that provides, so just accomplish to treat the calibration that fire detecting is examined amplifier;
3-2. detect instruction if flame detecting probe detecting pattern module 604 receives starting, the program on right side on execution graph 4 drawings then, at first start the emission light signal instruction sub-module 6041 in the flame detecting probe detecting pattern module 604, after emission light signal instruction sub-module 6041 receives the instruction of emission light signal, judge that at first institute requires the intensity (being imported by the intensity driving switch 13 that is connected on the computing machine 5) that transmits, in the present embodiment, this signal is the light signal of simulation boiler combustion flame, as above-mentioned, the frequency of selective light signal is 10～100Hz, then launches light signal instruction sub-module 6041 and sends the light signal of launching this frequency to the simulating flame infrared light supply 2 (Fig. 1 shows) that is connected on the computing machine 5; After IDD probe to be measured receives this light signal, produce electric signal, be input in the pre-process circuit 8; The electric signal of 8 pairs of pre-process circuits IDD probe to be measured, 1 output carries out every directly, preposition amplification, filtering, the main amplification, after rectification and the LC filtering, the voltage analog signal of output converts digital signal to through A/D modular converter 7 and is input in the flame detecting probe detecting pattern module 604 in the control processing system 6, judgement flame detecting probe function sub-module 6042 in the flame detecting probe detecting pattern module 604 receives the digital signal of this IDD probe to be measured output, carry out judgment processing, at first receiving digital signals is counted, as adopting the per second inside counting repeatedly, PPS (pulses per second) value that is sampled as that draws the IDD probe after the smoothing processing demonstrates through 3 figure place sign indicating number tube displays; Judge that according to the PPS value and the intensity of light source of IDD probe the quality of IDD probe shows through pilot lamp in addition.In the present embodiment, flame intensity can be selected three kinds of intensity on the intensity driving switch, and corresponding with it is that three kinds of different judgment standards are arranged under three kinds of varying strengths.The reference signal that digital signal after treatment is processed into simulating signal and respective strengths again compares, the performance of judging its IDD probe to be measured is good and bad, with the output of its judged result and drive the charactron display 3 that is connected on the computing machine 5 and 4 (Fig. 1 shows) of probe performance pilot lamp, the sensitivity with flame detecting probe to be measured by digital intuitive display shows, and reveals expression IDD to be measured by probe performance pilot lamp 4 and pops one's head in and bad red or green pilot lamp.
In the present embodiment, as above-mentioned flow process, the utility model is controlled and judgment processing by placing the control processing system in the computing machine.Adopt the infrared band illuminating source under the control of control processing system, to produce the infrared beam that flashes that is similar to boiler combustion flame frequency, flame detecting probe to be measured is seated on the flame detecting probe support to be measured, be connected with pre-process circuit by quad, after the simulating flame infrared light supply being sent the instruction of emission light signal when control processing system, the simulating flame infrared light supply sends the light signal of similar boiler combustion flame, flame detecting probe to be measured receives this light signal and converts electric signal to and be input in the pre-process circuit, pre-process circuit carries out pre-service to its electric signal, comprise every straight (removing AC signal), the preposition amplification of one-level, one-level filtering (filtering undesired signal), one-level master amplifies, full-wave rectification and LC filtering, through analog to digital conversion (A/D modular converter) its analog signal conversion is become digital signal to be input to place in the control processing system in the computing machine, by control processing system digital signal is carried out the computing judgment processing, signal intensity and reference signal intensity in more effective corresponding wave band, and then judge the function of flame detecting probe to be measured and intuitively the sensitivity of flame detecting probe to be measured is shown by the charactron display; Described analog voltage signal generation circuit produces the voltage signal of the flame detecting probe output that is similar to on-the-spot boiler erection under the control of control processing system.In the present embodiment, analog voltage signal generation circuit comprises frequency generating circuit, signal transformation circuit and output amplifier.The analog voltage signal that analog voltage signal generation circuit produces is input to by cable and treats in the fire detecting inspection amplifier, the testing circuit that comprises voltage table, reometer, relay and pilot lamp that connects on the output terminal for the treatment of fire detecting inspection amplifier provides simulating signal and the switching value signal for the treatment of the output of fire detecting inspection amplifier respectively, and then judges the function for the treatment of fire detecting inspection amplifier.And can regulate the potentiometer for the treatment of on the fire detecting inspection amplifier according to set canonical parameter, controlled variable such as gain and frequency make it to be adapted to on-the-spot application.When using the utility model tester, can regulate the intensity of simulating flame signal and analog voltage signal by the intensity driving switch, the control corresponding disposal system has corresponding basic parameter to be complementary with it, can detect the function of flame detecting probe and fire inspection amplifier under the situation of unlike signal intensity.
Claims (8)
1. fire detection test instrument, comprise: computing machine, the A/D modular converter and the display that are connected with computing machine, for the flame detecting probe support to be measured of putting flame detecting probe to be measured, it is characterized in that comprising the simulating flame infrared light supply that is connected with computing machine, mode switch, flame detecting probe performance pilot lamp and analog voltage signal generation circuit, output terminal is connected the pre-process circuit of A/D modular converter input end, be connected in the intensity driving switch between computing machine and the analog voltage signal generation circuit, place control processing system and testing circuit in the computing machine, treat that fire detecting inspection amplifier input terminal is connected on the output terminal of analog voltage signal generation circuit, treat that the output terminal of fire detecting inspection amplifier is connected on the input end of testing circuit.
2. fire detection test instrument according to claim 1 is characterized in that described simulating flame infrared light supply is the infrarede emitting diode of simulation boiler combustion flare up fire.
3. fire detection test instrument according to claim 1, it is characterized in that the described interior control processing system of computing machine that places comprises receiver module, the pattern judge module that is connected with receiver module, flame detecting probe detecting pattern module that is connected with the pattern judge module respectively and fire inspection amplifier detecting pattern module, and be connected in flame detecting probe detecting pattern module and the fiery mode switch module of examining between the amplifier detecting pattern module.
4. fire detection test instrument according to claim 3 is characterized in that comprising in the described flame detecting probe detecting pattern module: instruction sub-module and judgement flame detecting probe function sub-module to be measured transmit.
5. fire detection test instrument according to claim 3 is characterized in that described fire inspection amplifier detecting pattern module comprises emission voltage signal instruction module.
6. fire detection test instrument according to claim 1 is characterized in that comprising in the described pre-process circuit: block isolating circuit, one-level pre-amplification circuit, filtering circuit, one-level main amplifying circuit, full-wave rectifying circuit and LC filtering circuit.
7. fire detection test instrument according to claim 1 is characterized in that described analog voltage signal generation circuit comprises: frequency generating circuit, signal transformation circuit and output amplifier.
8. fire detection test instrument according to claim 1 is characterized in that described display is the charactron display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049388 CN200989821Y (en) | 2006-12-22 | 2006-12-22 | Fire detection testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049388 CN200989821Y (en) | 2006-12-22 | 2006-12-22 | Fire detection testing instrument |
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| Publication Number | Publication Date |
|---|---|
| CN200989821Y true CN200989821Y (en) | 2007-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620049388 Expired - Lifetime CN200989821Y (en) | 2006-12-22 | 2006-12-22 | Fire detection testing instrument |
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| CN (1) | CN200989821Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256620A (en) * | 2013-05-23 | 2013-08-21 | 常州纺织服装职业技术学院 | Multi-information-fusion intelligent flame detecting device and detecting method thereof |
| CN112460645A (en) * | 2020-11-06 | 2021-03-09 | 华帝股份有限公司 | Kitchen range, kitchen range detection method and control method |
-
2006
- 2006-12-22 CN CN 200620049388 patent/CN200989821Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256620A (en) * | 2013-05-23 | 2013-08-21 | 常州纺织服装职业技术学院 | Multi-information-fusion intelligent flame detecting device and detecting method thereof |
| CN103256620B (en) * | 2013-05-23 | 2015-07-22 | 常州纺织服装职业技术学院 | Multi-information-fusion intelligent flame detecting device and detecting method thereof |
| CN112460645A (en) * | 2020-11-06 | 2021-03-09 | 华帝股份有限公司 | Kitchen range, kitchen range detection method and control method |
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