CN105223863A - The time break point detection device - Google Patents
The time break point detection device Download PDFInfo
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- CN105223863A CN105223863A CN201510603932.XA CN201510603932A CN105223863A CN 105223863 A CN105223863 A CN 105223863A CN 201510603932 A CN201510603932 A CN 201510603932A CN 105223863 A CN105223863 A CN 105223863A
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- optical detector
- chip microcomputer
- circuit
- detection device
- point detection
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0421—Multiprocessor system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23074—Each control unit can control own associated load or as central control
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Abstract
The one point detection device time break, belongs to active explosion suppression device technical field.Comprise central controller, optical detector and fast jetting system, central controller comprises optical detector interface, spraying fire circuit, subtending port, LED display unit, button, single-chip microcomputer processing unit, electric battery and power conversion and testing circuit, single-chip microcomputer processing unit respectively with optical detector interface, spraying fire circuit, subtending port, LED display unit and button connect, electric battery is connected with power conversion and testing circuit, power conversion and testing circuit are connected with single-chip microcomputer processing unit, optical detector is connected with optical detector interface, quick jetting system is connected with spraying fire circuit.Advantage: by the digital processing technology of dsPIC processor, can reduce and detect rate of false alarm; Single-chip microcomputer processing unit adopts double mcu technology, can greatly improve detection response speed; Integrated level is high, and volume is little, lightweight, has cascade function.
Description
Technical field
The invention belongs to active explosion suppression device technical field, be specifically related to the one point detection device time break, be applied to the detection of flammable explosive gas or coal dust explosion moment point.
Background technology
Each main coal producer of the world is at the technical development of anti-flame proof, and various countries in succession have developed and spray explosion suppression device real-time in recent years, for suppressing explosive flame.Such as: Britain have developed MK-II type explosion suppression device, promote piston water spray with pressurized air, in 180ms, water can be diffused into lane space; The former Soviet Union have developed real-time air-generating BIIy type explosion suppression device in nineteen ninety, and the time forming dust cloud is 100ms; The U.S. develops Cradox type and suppresses quick-fried device, and throw with explosion and fall apart for principle, the time forming dust cloud is 180ms ~ 490ms.In China, what mostly adopt from " six or five " is the passive flame proof measure of installing explosion-proof rock dust barrier or explosion-proof water barrier in tunnel, the automatic explosion suppressor of the real-time air-generating of ZBY-S type was have developed again afterwards in " eight or five " period, these equipment volume are huge, use inconvenience, response time is slow in addition, and effectiveness of explosion suppression is unsatisfactory.
South Africa HS active explosion suppression fire prevention system proposes the technical scheme passive for traditional colliery flame proof being changed into active explosion suppression first, and Part Coal Mine has worldwide carried out using promoting, and has certain effectiveness of explosion suppression.In recent years along with the raising of various countries' scientific research level, the datonation-inhibition ability of active explosion suppression device has had larger raising, and easy to use, but still some problems of ubiquity, as high in optical detector rate of false alarm or response speed is slow, and central controller volume is large, function singleness etc.
In view of above-mentioned prior art, the applicant has done useful design, and technical scheme described below produces under this background.
Summary of the invention
The object of the present invention is to provide point detection device a kind of time break, the low and compact of fast response time, rate of false alarm.
The object of the invention is to reach like this, the one point detection device time break, it is characterized in that: comprise central controller, optical detector and fast jetting system, described central controller comprises optical detector interface, spraying fire circuit, subtending port, LED display unit, button, single-chip microcomputer processing unit, electric battery and power conversion and testing circuit, described single-chip microcomputer processing unit respectively with optical detector interface, spraying fire circuit, subtending port, LED display unit and button connect, described electric battery is connected with power conversion and testing circuit, power conversion and testing circuit are connected with single-chip microcomputer processing unit, for providing power supply for single-chip microcomputer processing unit, described optical detector is connected with optical detector interface, described quick jetting system is connected with spraying fire circuit.
In a specific embodiment of the present invention, described optical detector comprises optical filter, photoelectric switching circuit, A/D change-over circuit, dsPIC processor, output interface and probe unit, wherein, dsPIC processor adopts dsPIC30F4011, described optical filter, photoelectric switching circuit and A/D change-over circuit are connected successively, described photoelectric switching circuit connects probe unit, described A/D change-over circuit connects dsPIC processor, described dsPIC processor connects output interface, output interface is connected with described optical detector Interface Matching.
In another specific embodiment of the present invention, described optical detector is two waveband optical detector, described probe unit comprises infrared sensor and Ultraviolet sensor, wherein, the wavelength of described infrared sensor is 4.0 ~ 4.8um, and the wavelength of described Ultraviolet sensor is 185 ~ 260nm.
In another specific embodiment of the present invention, described single-chip microcomputer processing unit comprises the first single-chip microcomputer and second singlechip, wherein, first single-chip microcomputer adopts PIC16F887, second singlechip adopts PIC18F4520, the first described single-chip microcomputer is connected with second singlechip, and the first single-chip microcomputer is connected with optical detector interface and subtending port respectively, and second singlechip is connected with spraying fire circuit, LED display unit and button respectively.
In another specific embodiment of the present invention, the quantity of described optical detector interface has three groups.
Also have in a specific embodiment of the present invention, the quantity of described spraying fire circuit has six tunnels.
More of the present invention and in a specific embodiment, described optical detector interface and output interface are aviation plug.
In an of the present invention and then specific embodiment, in described dsPIC processor, be built-in with sef-adapting filter.
Of the present invention again more and in a specific embodiment, the quantity of described central controller has two, connected by subtending port between two central controllers.
In an again of the present invention and then specific embodiment, described spraying fire circuit realizes switching function by MOSFET power tube.
The present invention is owing to have employed said structure, and compared with prior art, the beneficial effect had is: by the digital processing technology of dsPIC processor, can reduce and detect rate of false alarm; Single-chip microcomputer processing unit adopts double mcu technology, and spraying fire circuit adopts MOSFET power tube to realize switch control rule, can greatly improve detection response speed; Central controller is equipped with electric battery, and integrated level is high, and volume is little, lightweight; There is cascade function, the Signal share of the photodetector that two central controllers connect can be realized.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention.
The theory diagram of Fig. 2 central controller of the present invention.
Fig. 3 is the theory diagram of optical detector of the present invention.
In figure: 1. central controller, 11. optical detector interfaces, 12. spraying fire circuit, 13. subtending ports, 14.LED display unit, 15. buttons, 16. single-chip microcomputer processing units, 161. first single-chip microcomputers, 162. second singlechips, 17. electric battery, 18. power conversions and testing circuit; 2. optical detector, 21. optical filters, 22. photoelectric switching circuits, 23.A/D change-over circuit, 24.dsPIC processor, 25. output interfaces, 26. probe units; 3. quick jetting system.
Embodiment
Technical spirit of the present invention and beneficial effect can be fully understood in order to make the public; applicant will describe in detail the specific embodiment of the present invention below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the present invention's design all should be considered as protection scope of the present invention.
Refer to Fig. 1, the present invention relates to the one point detection device time break, be applied to the detection of flammable explosive gas or coal dust explosion moment point, fire extinguishing pulvis can be controlled and spray, effectively suppress to burn or blast.The described point detection device time break comprises central controller 1, optical detector 2 and quick jetting system 3.The testing result that described central controller 1 provides according to optical detector 2, controls quick jetting system 3 and works.
Refer to Fig. 2, described central controller 1 comprises optical detector interface 11, spraying fire circuit 12, subtending port 13, LED display unit 14, button 15, single-chip microcomputer processing unit 16, electric battery 17 and power conversion and testing circuit 18.Described single-chip microcomputer processing unit 16 is connected with optical detector interface 11, spraying fire circuit 12, subtending port 13, LED display unit 14 and button 15 respectively, in the present embodiment, the quantity of described optical detector interface 11 has three groups, can connect three groups of optical detectors 2 simultaneously.The quantity of described spraying fire circuit 12 has six tunnels, and can connect the six quick jetting system 3 in tunnel, herein, spraying fire circuit 12 adopts MOSFET power tube simultaneously, and switching speed is fast, and it is convenient to control, and do not need heat radiation, output power is 10V/2A.Described subtending port 13 connects for the cascade realized between two central controllers 1, described cascade connect refer to a central controller 1 to detect after shot break forthwith by signal transmission to another central controller 1, realize the Signal share of optical detector 2.Described button 15 set for time delay.Described single-chip microcomputer processing unit 16 comprises the first single-chip microcomputer 161 and second singlechip 162, and wherein, the first single-chip microcomputer 161 adopts PIC16F887, and second singlechip 162 adopts PIC18F4520.The first described single-chip microcomputer 161 is connected with second singlechip 162.First single-chip microcomputer 161 is connected with optical detector interface 11 and subtending port 13 respectively, for receiving the detection signal of three groups of optical detectors 2 and realizing cascade function, ensures the high response speed of system.Described second singlechip 162 is connected with spraying fire circuit 12, LED display unit 14 and button 15 respectively, postpones the functions such as setting, LED display and fire extinguishing pulvis spraying fire for realizing.Described electric battery 17 is connected with power conversion and testing circuit 18, and power conversion and testing circuit 18 are connected with single-chip microcomputer processing unit 16, for providing power supply for single-chip microcomputer processing unit 16.Described electric battery 17 is 12V/4Ah lead-acid battery.But the power supply of this device is not limited in this, the power supply that also directly can connect 220V/50Hz or 127V/50Hz is that circuit is powered.Described central controller 1 has battery electric quantity and detects and fire extinguishing pulvis spraying fire status detection function, also has setting time delay and presentation control function.Central controller 1, after detecting that optical detector 2 exports blast information, postpones the time of setting, starts quick jetting system 3 work through spraying fire circuit 12, starts ejecting extinguishing pulvis and carries out datonation-inhibition.
Refer to Fig. 3, described optical detector 2 comprises optical filter 21, photoelectric switching circuit 22, A/D change-over circuit 23, dsPIC processor 24, output interface 25 and probe unit 26, wherein, described dsPIC processor 24 adopts dsPIC30F4011, and be built-in with sef-adapting filter, adaptive filter algorithm, gas explosion feature signal extraction algorithm and pattern matching algorithm can be realized.Described optical filter 21, photoelectric switching circuit 22 and A/D change-over circuit 23 are connected successively, described photoelectric switching circuit 22 connects probe unit 26, described A/D change-over circuit 23 connects dsPIC processor 24, described dsPIC processor 24 connects output interface 25, and output interface 25 mates with described optical detector interface 11 and is connected.Optical detector interface 11 and output interface 25 all adopt aviation plug, and connection reliability is high, can realize Power supply and Signal transmissions.In the present embodiment, described optical detector 2 is two waveband optical detector, particularly, described probe unit 26 comprises infrared sensor and Ultraviolet sensor, described infrared sensor and Ultraviolet sensor are assemblied in two aluminum enclosure respectively, and be equipped with treatment circuit separately, can be used alone.Other circuit that the present embodiment relates to all have open in the prior art, omit herein and repeat.
Please continue to refer to Fig. 1 ~ Fig. 3, when practical application, need the quantity of the quick jetting system 3 of Selecting parameter such as the first space size according to datonation-inhibition district, then this pick-up unit is arranged in datonation-inhibition district, and regulate the detection angle of optical detector 2, set the delay parameter of central controller 1.Optical detector 2 is by the optical background noise in the datonation-inhibition district of optical filter 21 filtering, and described optical filter 21 adopts optically filtering eyeglass.Optical detector 2 selects spectral bandwidth with reference to (or the blast) moment of catching fire of hydrocarbon in gas, coal dust, and herein, the wavelength of infrared sensor is 4.0 ~ 4.8um, and the wavelength of Ultraviolet sensor is 185 ~ 260nm.When this pick-up unit is set as only having infrared sensor and Ultraviolet sensor to export useful signal simultaneously, be just judged to be that blast occurs.Infrared sensor and Ultraviolet sensor are transformed into simulating signal to the light signal of specific wavelength by photoelectric switching circuit 22, and A/D change-over circuit 23, by analog signal figure, sends into dsPIC processor 24.First dsPIC processor 24 eliminates environmental optics ground unrest and circuit noise by sef-adapting filter, then from signal, extracts gas explosion characteristic signal, carries out pattern match with the characteristic signal stored in storer, the validity of distinguishing signal.Sef-adapting filter according to the difference of different site environments and electron device, can calculate one group of Optimal Parameters automatically, makes the performance of system reach best, can simplify scheduling and planning thus, make product be applicable to more multi-state.Pattern match signal is herein through some experiments and records and the waveform signal of treated gas explosion optical signature, is mainly used in the ascending velocity differentiating light intensity.Optical detector 2, by the Digital Signal Processing of dsPIC processor 24, can eliminate false alarm, reduces the rate of false alarm of pick-up unit.When being detected district and having blast Mars, the characteristic signal that optical detector 2 extracts is similar to model, and output interface 25 exports a high level signal, otherwise exports a low level signal.Central controller 1 is after the shot break that optical detector 2 exports being detected, and postpone the time of setting, start quick jetting system 3, quick jetting system 3 ejecting extinguishing pulvis carries out datonation-inhibition.
In the present embodiment, described central controller 1 response time≤14ms, described spraying fire circuit 12 switching response time≤10us, optical detector 2 response time≤1ms, as can be seen here, the fast response time of this pick-up unit, and rate of false alarm is low, reach goal of the invention.
Claims (10)
1. one kind the time break point detection device, it is characterized in that: comprise central controller (1), optical detector (2) and fast jetting system (3), described central controller (1) comprises optical detector interface (11), spraying fire circuit (12), subtending port (13), LED display unit (14), button (15), single-chip microcomputer processing unit (16), electric battery (17) and power conversion and testing circuit (18), described single-chip microcomputer processing unit (16) respectively with optical detector interface (11), spraying fire circuit (12), subtending port (13), LED display unit (14) and button (15) connect, described electric battery (17) is connected with power conversion and testing circuit (18), power conversion and testing circuit (18) are connected with single-chip microcomputer processing unit (16), for providing power supply for single-chip microcomputer processing unit (16), described optical detector (2) is connected with optical detector interface (11), described quick jetting system (3) is connected with spraying fire circuit (12).
2. time break according to claim 1 point detection device, it is characterized in that described optical detector (2) comprises optical filter (21), photoelectric switching circuit (22), A/D change-over circuit (23), dsPIC processor (24), output interface (25) and probe unit (26), wherein, dsPIC processor (24) adopts dsPIC30F4011, described optical filter (21), photoelectric switching circuit (22) and A/D change-over circuit (23) are connected successively, described photoelectric switching circuit (22) connects probe unit (26), described A/D change-over circuit (23) connects dsPIC processor (24), described dsPIC processor (24) connects output interface (25), output interface (25) mates with described optical detector interface (11) and is connected.
3. time break according to claim 2 point detection device, it is characterized in that described optical detector (2) is two waveband optical detector, described probe unit (26) comprises infrared sensor and Ultraviolet sensor, wherein, the wavelength of described infrared sensor is 4.0 ~ 4.8um, and the wavelength of described Ultraviolet sensor is 185 ~ 260nm.
4. time break according to claim 1 point detection device, it is characterized in that described single-chip microcomputer processing unit (16) comprises the first single-chip microcomputer (161) and second singlechip (162), wherein, first single-chip microcomputer (161) adopts PIC16F887, second singlechip (162) adopts PIC18F4520, described the first single-chip microcomputer (161) is connected with second singlechip (162), first single-chip microcomputer (161) is connected with optical detector interface (11) and subtending port (13) respectively, second singlechip (162) respectively with spraying fire circuit (12), LED display unit (14) and button (15) connect.
5. time break according to claim 1 point detection device, it is characterized in that the quantity of described optical detector interface (11) has three groups.
6. time break according to claim 1 point detection device, it is characterized in that the quantity of described spraying fire circuit (12) has six tunnels.
7. time break according to claim 2 point detection device, it is characterized in that described optical detector interface (11) and output interface (25) are aviation plug.
8. time break according to claim 1 point detection device, it is characterized in that being built-in with sef-adapting filter in described dsPIC processor (24).
9. time break according to claim 1 point detection device, it is characterized in that the quantity of described central controller (1) has two, connected by subtending port (13) between two central controllers (1).
10. time break according to claim 1 point detection device, it is characterized in that described spraying fire circuit (12) realizes switching function by MOSFET power tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510603932.XA CN105223863A (en) | 2015-09-21 | 2015-09-21 | The time break point detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510603932.XA CN105223863A (en) | 2015-09-21 | 2015-09-21 | The time break point detection device |
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| CN105223863A true CN105223863A (en) | 2016-01-06 |
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| CN201510603932.XA Pending CN105223863A (en) | 2015-09-21 | 2015-09-21 | The time break point detection device |
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Application publication date: 20160106 |