CN102500085A - Fire extinguishing effectiveness detecting device for judgment based on laser beam shielding - Google Patents
Fire extinguishing effectiveness detecting device for judgment based on laser beam shielding Download PDFInfo
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- CN102500085A CN102500085A CN2011104434561A CN201110443456A CN102500085A CN 102500085 A CN102500085 A CN 102500085A CN 2011104434561 A CN2011104434561 A CN 2011104434561A CN 201110443456 A CN201110443456 A CN 201110443456A CN 102500085 A CN102500085 A CN 102500085A
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Abstract
A fire extinguishing effectiveness detecting device for judgment based on laser beam shielding comprises a laser bijection sensor, a positive pressure air system, an industrial personal computer, an interface circuit and a timer, wherein the laser bijection sensor is electrically connected with the interface circuit, and the interface circuit is electrically connected with the industrial personal computer; the timer is electrically connected with the interface circuit; the positive pressure air system comprises an air compressor, a pipeline, a controller and a positive air output terminal, and the positive air output terminal is connected with the air compressor by the pipeline; and the controller is connected with the air compressor; the positive pressure air output terminal is installed at the front part of the laser bijection sensor to generate positive pressure air. The fire extinguishing effectiveness detecting device has the advantages of strong adaptability, short response time, high sensitivity, strong disturbance resisting performance, and convenience in installation. The fire extinguishing effectiveness detecting device designed according to the method can be installed at any position in a fire scene including the part where the laser beam passes through the burning flame, and occupies a small space.
Description
Technical field
The present invention relates to the fire disaster simulation detection range, be specifically related to a kind of fire extinguishing effectiveness detection method of blocking judgement based on laser beam.
Background technology
At present; Various fire disaster simulation trainers are widely used in fire drill and the manoeuvre, are the volumes of measurement fire combustion zone flame (like propane flame) temperature, the effective fire water of collection or judge with people's experience fully for the existing method of the detection of fire extinguishing effectiveness.Said method exist measure inaccurate, the response time long, device volume big, adapt to extinguishing chemical single (only being suitable for fire water) waits not enoughly, and the measurement device of the effective fire water of collection often can't be installed for the fire disaster simulation trainer (like airborne vehicle, chemical industry equipment etc.) of complex structure, finite volume.Because the limitation of existing fire extinguishing effectiveness detection method makes it be difficult to satisfy the demand of fire disaster simulation trainer.
Summary of the invention
In order to solve the limitation of existing fire disaster simulation trainer fire extinguishing effectiveness detection method, a kind of fire extinguishing effectiveness checkout gear that blocks judgement based on laser beam has been proposed.
The technical scheme that the present invention adopted is following:
A kind of fire extinguishing effectiveness checkout gear that blocks judgement based on laser beam; Comprise laser correlation sensor, positive pressure air system, industrial computer, interface circuit and timer; Laser correlation sensor and interface circuit are electrically connected; Interface circuit and industrial computer are electrically connected, and timer and interface circuit are electrically connected, and positive pressure air system comprises air compressor, pipeline, controller and positive pressure air output; The positive pressure air output is connected with air compressor through pipeline, and controller is connected with air compressor; The positive pressure air output is installed in the anterior air that produces malleation of laser correlation sensor.Described laser correlation sensor is the laser correlation sensor of German PEPPERL FUCHS P+F company, and the model of its transmitting terminal is E18-LAS/92, and the model of receiving terminal is EV18-LAS/32/92.
This fire extinguishing effectiveness checkout gear adaptability is strong, the response time short, highly sensitive, antijamming capability is strong, the device convenient installation.Fire extinguishing effectiveness checkout gear according to this method design can be installed in optional position, the scene of a fire, comprises that laser beam passes the burned flame part, and it is little to take up room.
Description of drawings
Fig. 1 is an embodiment simple diagram of the present invention.Wherein 1, the transmitting terminal of laser correlation sensor, 2, the receiving terminal of laser correlation sensor, 3, the positive pressure air output, 4, interface circuit, 5, industrial computer.
The specific embodiment
Embodiment 1:
A kind of fire extinguishing effectiveness checkout gear that blocks judgement based on laser beam; Comprise laser correlation sensor, positive pressure air system, industrial computer, interface circuit and timer; Laser correlation sensor and interface circuit are electrically connected; Interface circuit and industrial computer are electrically connected, and timer and interface circuit are electrically connected, and positive pressure air system comprises air compressor, pipeline, controller and positive pressure air output; The positive pressure air output is connected with air compressor through pipeline, and controller is connected with air compressor; The positive pressure air output is installed in the anterior air that produces malleation of laser correlation sensor.
1. detect based on the fire extinguishing effectiveness that blocks judgement
In appropriate location apart from simulated fire flame combustion zone, laser correlation sensor is installed, this sensor can make laser beam penetrate flame; Through recording efficient fire-extinguishing chemical, like fire water, foam what connection powder, be blocked, the time length of the laser beam of refraction or scattering judges the validity of hot drill; In the time of in extinguishing chemical is sprayed onto the appointment effective coverage; Generating laser emitted laser bundle is blocked, refraction or scattering, produces action thereby make laser pickoff not receive useful signal, and controller is gathered the on off state of laser sensor; Start or stop timer, the back of adding up is as the time of effectively putting out a fire;
2. positive pressure air system
Laser correlation sensor is the key equipment that fire extinguishing effectiveness detects; Be installed near the simulated fire flame combustion zone, the training spraying fire-extinguishing agent may cover on the laser correlation sensor during like fire water, foam what connection powder; Cause erroneous judgement; Simultaneously, this place belongs to the high-temperature region, and is also influential to the normal use of laser correlation sensor.Through the anterior air that produces malleation of positive pressure air system correlation sensor, be used to protect sensor.The air of malleation can prevent that extinguishing chemical (like foam) from getting into laser correlation passage, also isolates hot-air simultaneously and is the sensor heat radiation.
Be blocked through recording efficient fire-extinguishing chemical time of (or refraction, scattering) laser beam, judge the validity of hot drill.To being used for the laser correlation sensor that fire extinguishing effectiveness detects the cooling protection air is provided, makes it can temperature rise and polluted, keep the validity that transmits and receives of laser correlation sensor by extinguishing chemical.
Embodiment 2:
Interface circuit is to convert the signal (voltage or electric current) that laser correlation sensor is exported into the discernible signal of controller (voltage or electric current).The laser correlation sensor of for example above mentioned German PEPPERL FUCHS P+F company is output as the 24V voltage signal; The IO mouth voltage of present most microcontroller (single-chip microcomputer, ARM etc.) is 3.3V; Event needs a circuit that converts 24V into 3.3V, is interface circuit.If employing PLC is a controller, PLC input module input point is 24V, and the sensor does not then need interface circuit.
Output switching value to industrial computer transmission laser correlation sensor; Can be on industrial computer the installation data capture card gather the switching value signal, also can on interface circuit, increase communication function (like the RS232 serial ports) through serial communication to industrial computer transmit button amount signal.
Timer can also can be software for hardware.Hardware timer: timing circuit is received with the switching value signal in (1), when sensor moves, starts the timer timing, stops timer when sensor resets.(2) the switching value signal is received micro controller I, when sensor moves, start the timing of microcontroller internal timer, stop timer when sensor resets.Software timer: with industrial computer, Windows operating system is the example explanation.The switching value signal is inputed to industrial computer, under Windows operating system,, when sensor moves, start timing, stop timing when sensor resets through programming language (like C, C++) establishment timing program.
One or more laser correlation sensors (typical application is for installing 3) are being installed apart from suitable position, simulated fire flame combustion zone as required.Laser correlation sensor is output as switching value (output " 0 " when blocking does not have output " 1 " when blocking), and controller (PLC, industrial computer etc.) is controlled the start and stop of timer through the on off state of interface circuit collection laser correlation sensor.Between a plurality of laser correlation sensors is the relation of logic OR, then starts timer as long as promptly have a laser correlation sensor to be blocked to produce action.When laser correlation sensor is output as " 0 ", start timer, when laser correlation sensor is output as " 1 ", stop timer, the time of accumulative total is the time that extinguishing chemical is sprayed onto the effective coverage, with this foundation as fire extinguishing validity.
Thereby the extinguishing chemical that laser correlation sensor possibly sprayed covers or pollutes and produces erroneous judgement, and the zone that while laser correlation sensor is installed is the high-temperature region.The fire extinguishing effectiveness checkout gear causes the anterior air shield that forms of laser correlation sensor with the positive pressure air of blower fan, is used to protect sensor.The air of malleation can prevent that extinguishing chemical (like foam) from getting into laser correlation passage, also isolates hot-air simultaneously and is the sensor heat radiation.
Claims (2)
1. fire extinguishing effectiveness checkout gear that blocks judgement based on laser beam; It is characterized in that: comprise laser correlation sensor, positive pressure air system, industrial computer, interface circuit and timer; Laser correlation sensor and interface circuit are electrically connected; Interface circuit and industrial computer are electrically connected, and timer and interface circuit are electrically connected, and positive pressure air system comprises air compressor, pipeline, controller and positive pressure air output; The positive pressure air output is connected with air compressor through pipeline, and controller is connected with air compressor; The positive pressure air output is installed in the anterior air that produces malleation of laser correlation sensor.
2. a kind of fire extinguishing effectiveness checkout gear that blocks judgement based on laser beam according to claim 1; It is characterized in that: described laser correlation sensor is the laser correlation sensor of German PEPPERL FUCHS P+F company; The model of its transmitting terminal is E18-LAS/92, and the model of receiving terminal is EV18-LAS/32/92.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104434561A CN102500085A (en) | 2011-12-27 | 2011-12-27 | Fire extinguishing effectiveness detecting device for judgment based on laser beam shielding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104434561A CN102500085A (en) | 2011-12-27 | 2011-12-27 | Fire extinguishing effectiveness detecting device for judgment based on laser beam shielding |
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| CN102500085A true CN102500085A (en) | 2012-06-20 |
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| CN2011104434561A Pending CN102500085A (en) | 2011-12-27 | 2011-12-27 | Fire extinguishing effectiveness detecting device for judgment based on laser beam shielding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872570A (en) * | 2012-09-22 | 2013-01-16 | 中国船舶重工集团公司第七�三研究所 | Fire-extinguishing efficiency detection device based on laser beam occlusion judgment |
| CN108096757A (en) * | 2017-12-19 | 2018-06-01 | 中国船舶重工集团公司第七0三研究所 | A kind of hot drill apparatus for evaluating based on ultrasonic detection technology |
| CN108131320A (en) * | 2017-12-27 | 2018-06-08 | 中国船舶重工集团公司第七0三研究所 | A kind of aspirating smoke detector fan safe drive module |
-
2011
- 2011-12-27 CN CN2011104434561A patent/CN102500085A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872570A (en) * | 2012-09-22 | 2013-01-16 | 中国船舶重工集团公司第七�三研究所 | Fire-extinguishing efficiency detection device based on laser beam occlusion judgment |
| CN108096757A (en) * | 2017-12-19 | 2018-06-01 | 中国船舶重工集团公司第七0三研究所 | A kind of hot drill apparatus for evaluating based on ultrasonic detection technology |
| CN108131320A (en) * | 2017-12-27 | 2018-06-08 | 中国船舶重工集团公司第七0三研究所 | A kind of aspirating smoke detector fan safe drive module |
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Application publication date: 20120620 |