CN212256533U - High-performance ultraviolet-infrared double-spectrum composite optical fire detector - Google Patents
High-performance ultraviolet-infrared double-spectrum composite optical fire detector Download PDFInfo
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- CN212256533U CN212256533U CN202021224512.3U CN202021224512U CN212256533U CN 212256533 U CN212256533 U CN 212256533U CN 202021224512 U CN202021224512 U CN 202021224512U CN 212256533 U CN212256533 U CN 212256533U
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Abstract
The utility model discloses a compound optics fire detector of infrared two spectra of high performance ultraviolet, the blind type ultraviolet phototube of day passes through ultraviolet signal conditioning circuit and is connected with 32 position ARM processors of high performance, the narrow band infrared photosensitive tube of high SNR passes through multistage infrared signal amplification circuit and is connected with 32 position ARM processors of high performance and multistage infrared signal amplification circuit is connected with self calibration circuit and pollution detection circuit simultaneously, 32 position ARM processors of high performance pass through self calibration circuit and pollution detection circuit and are connected with the narrow band infrared photosensitive tube of high SNR simultaneously. The utility model discloses in, fire detector can realize conflagration automatic detection and automatic alarm, has replaced traditional artifical tour, can also replace conventional ultraviolet infrared flame detector in for military use automatic fire extinguishing explosion suppression field, improves tank armoured vehicle automatic fire extinguishing explosion suppression system's overall reliability, and job stabilization nature is good moreover, and intelligent degree is high, is worth wideling popularize.
Description
Technical Field
The utility model relates to a fire detection technical field especially relates to a compound optics fire detector of high performance ultraviolet infrared double spectrum.
Background
The fire disaster is one of the most frequent and devastating disasters among various disasters, the traditional fire prevention mainly depends on manual inspection, the effect and the efficiency are low, the cost is high, along with the development of science and technology, at present, automatic fire extinguishing and explosion suppression systems aiming at various occasions and various fire disasters are widely used, a fire detector is used as a signal input source of the whole fire extinguishing system, whether the fire disaster can be accurately, reliably and quickly identified can be realized, and the fire protection capability of the fire extinguishing system plays a key role, at present, the fire detector mainly comprises a temperature-sensitive fire detector, a smoke-sensitive fire detector and an optical fire detector, the substance is released along with smoke, temperature, light radiation and the like during burning, the propagation speed is the light radiation, so that the identification of the fire disaster through the spectral radiation of the flame is the fastest mode among all fire detecting modes, and the optical fire detector identifies the fire disaster by utilizing the spectral characteristics of the flame, the method has the characteristics of advanced detection mechanism, wide detection range, high sensitivity, high response speed, strong anti-interference capability, wide application range and the like, and is widely applied to the field of military automatic fire extinguishing and explosion suppression.
Although the conventional infrared flame detector and ultraviolet flame detector are widely used, the infrared flame detector can only detect the combustion flame of carbon-containing substances and can not detect the combustion of non-carbon-containing substances such as hydrogen, phosphorus, metal lithium and the like, the conventional ultraviolet flame detector has a certain false alarm rate due to the self-discharge local characteristic of an ultraviolet photoelectric tube, the conventional infrared flame detector and the conventional ultraviolet flame detector both belong to single-photopopular fire detection, the single-photopopular fire detection method has the inherent defect of poor anti-interference capability, and the false alarm caused by the interference of the infrared flame detector or the ultraviolet flame detector in each application field occurs when the false alarm occurs, so that the false operation of a fire extinguishing system mistakenly spraying bottle occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a high-performance ultraviolet-infrared double-spectrum composite optical fire detector.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-performance ultraviolet-infrared double-spectrum composite optical fire detector is characterized in that an external power supply is connected with a power supply input protection circuit, the power supply input protection circuit is connected with a high-performance 32-bit ARM processor through a DC-DC power conversion circuit, the power supply input protection circuit is connected with a solar blind type ultraviolet photoelectric tube through an adjustable high-voltage ultraviolet photoelectric tube power supply circuit, the solar blind type ultraviolet photoelectric tube is connected with the high-performance 32-bit ARM processor through an ultraviolet signal conditioning circuit, a high-signal-to-noise ratio narrow-band infrared photosensitive tube is connected with the high-performance 32-bit ARM processor through a multi-stage infrared signal amplifying circuit, the multi-stage infrared signal amplifying circuit is simultaneously connected with a self-calibration circuit and a pollution detection circuit, and the high-performance 32-bit ARM processor is simultaneously connected with the high-signal-to-noise ratio narrow-band infrared photosensitive tube through the self-calibration circuit and the, the high-performance 32-bit ARM processor is connected with a remote terminal, an upper computer and a controller through a CAN bus communication interface circuit and an RS485 bus communication interface circuit, and the high-performance 32-bit ARM processor is connected with a temperature acquisition circuit, a dial switch circuit, an LED driving circuit, a 4-20 mA current loop circuit, a fire alarm level signal output circuit, an OC door output circuit, two sets of relay driving output circuits and two sets of fire extinguisher driving output circuits.
As a further description of the above technical solution:
the detection waveband of the solar blind ultraviolet photoelectric tube is an ultraviolet waveband near 0.2um, and the detection waveband of the narrow-band infrared photosensitive tube with a high signal-to-noise ratio is an infrared waveband near 4.3 um.
As a further description of the above technical solution:
the power conversion scheme of the DC-DC power conversion circuit adopts a mode of switching power conversion and linear power conversion, and the DC-DC power conversion circuit comprises power input protection, power conversion and power filtering.
As a further description of the above technical solution:
the ultraviolet signal conditioning circuit comprises an amplitude limiting circuit and a shaping circuit.
As a further description of the above technical solution:
the fire extinguishing controller is characterized in that related spray bottle logics such as automatic reinforcement, automatic conversion, automatic spray bottles, semi-automatic spray bottles and the like are completely integrated in a high-performance 32-bit ARM processor.
As a further description of the above technical solution:
the multistage infrared signal amplifying circuit adopts a four-stage amplifying circuit.
As a further description of the above technical solution:
the high-performance 32-bit ARM processor, the crystal oscillator, the program downloading and debugging interface and the processor peripheral resistance-capacitance circuit form a core control unit processing circuit.
As a further description of the above technical solution:
the LED driving circuit comprises an LED indicator light which is a red, green and yellow common anode indicator light.
The utility model discloses following beneficial effect has:
1. the utility model discloses in, fire detector can realize conflagration automatic detection and automatic alarm to possess intellectuality, information-based function, can long-rangely monitor the conflagration, replaced traditional artifical tour, improved work efficiency, stopped the conflagration and leaked the warning potential safety hazard, the cost is reduced.
2. The utility model discloses in, fire detector can replace traditional temperature sensing type and smoke sensing type fire detector, realized surveying fast and the warning to the conflagration, fire alarm speed and the degree of accuracy have been improved, time has been won for the suppression processing of the timely suppression and explosion of conflagration, guarantee people's property and life safety, also can replace infrared flame detector and the ultraviolet flame detector of the general detection mode of single light, utilize two spectrum modes to detect the discernment to the conflagration, the poor inherent defect of the general fire detection method interference killing feature of single light has been solved, the emergence of leading to fire extinguishing system mistake spray bottle malfunction event because of the detector misstatement police has been stopped, fire extinguishing system maintenance cost has been reduced, the loss is reduced.
3. The utility model discloses in, fire detector can replace conventional ultraviolet infrared flame detector in for military use automatic fire extinguishing explosion suppression field for to the conflagration detection in tank armoured vehicle passenger cabin and combat tank, improve the overall reliability of tank armoured vehicle automatic fire extinguishing explosion suppression system, thereby improve tank armoured vehicle barrier propterty, guarantee fighter life safety promotes army's ability of fighting.
4. The utility model discloses in, fire detector job stabilization nature is good, and the reliability is high, and the interference killing feature is strong, and sensitivity is high, and the function is strong, and intelligent degree is high, and the interface is many, and is compatible good, and the application is wide, can conveniently construct excellent performance, low cost's explosion suppression system of putting out a fire, is worth wideling popularize.
Drawings
Fig. 1 is a schematic block diagram of a high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the utility model;
FIG. 2 is a graph of a spectral distribution of a conventional light source;
fig. 3 is a power conversion circuit of the high-performance ultraviolet-infrared double-spectrum composite optical fire detector provided by the utility model;
fig. 4 is an ultraviolet adjustable operating voltage boost circuit of the high-performance ultraviolet and infrared dual-spectrum composite optical fire detector provided by the utility model;
fig. 5 is an ultraviolet signal conditioning circuit of the high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the utility model;
fig. 6 is an infrared signal amplifying circuit of the high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the utility model;
fig. 7 is a calibration and pollution monitoring circuit of a high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the utility model;
fig. 8 is a core control unit processing circuit of the high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the utility model;
fig. 9 is a CAN bus interface circuit diagram of a high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the utility model;
fig. 10 is a RS485 bus interface circuit diagram of a high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the present invention;
fig. 11 is a circuit diagram of a level signal output interface of a high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the present invention;
fig. 12 is a circuit diagram of an OC gate signal output interface of the high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the present invention;
fig. 13 is a circuit diagram of a 4-20 mA current loop signal output interface of the high-performance ultraviolet-infrared dual-spectrum composite optical fire detector provided by the present invention;
fig. 14 is a circuit diagram of a fire extinguisher driving signal output interface of a high performance ultraviolet-infrared double spectrum composite optical fire detector provided by the utility model;
fig. 15 is a circuit diagram of a relay driving signal output interface of the high-performance ultraviolet-infrared dual-spectrum composite optical fire detector.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-15, the present invention provides an embodiment: a high-performance ultraviolet-infrared double-spectrum composite optical fire detector is characterized in that an external power supply is connected with a power supply input protection circuit, the power supply input protection circuit is connected with a high-performance 32-bit ARM processor through a DC-DC power supply conversion circuit, the power supply input protection circuit is connected with a solar blind type ultraviolet photoelectric tube through an adjustable high-voltage ultraviolet photoelectric tube power supply circuit, the ultraviolet photoelectric tube adopts a solar blind type ultraviolet photoelectric tube to avoid the interference of sunlight, the solar blind type ultraviolet photoelectric tube only responds to ultraviolet radiation with the wavelength of 185-260 nm, the radiation of the sunlight in the wavelength band is almost completely absorbed by the earth atmosphere and does not reach the earth surface, so the solar blind type ultraviolet photoelectric tube is called, the ultraviolet radiation in the wavelength band is utilized to detect fire, the background interference can be minimized, an interference source existing in the environment is filtered from a signal source head, and the overall reliability of the system is guaranteed, the solar blind type ultraviolet photoelectric tube is a photoelectric conversion device based on the ultraviolet photoelectric effect, and needs to work in a high-voltage state for realizing higher sensitivity, and the power supply circuit of the adjustable high-voltage ultraviolet photoelectric tube is characterized in that the output voltage is adjustable, an input power supply enters a power supply control chip U1 and a coil T1 after three-stage protection, the power supply control chip U1 adopts SG3524, the U1 controls the conduction state of the coil T1 through transistors Q1 and Q2, so as to control the output voltage Vuv, the Vuv forms negative feedback through the voltage division of R1 and RP1, so as to achieve stable output, the output voltage Vuv can be adjusted within the range of 50-500V by adjusting RP1, the ultraviolet photoelectric tubes have individual difference, the voltage adjusting function can realize the sensitivity consistency adjustment of the ultraviolet photoelectric tubes of the same type through fine adjustment, the voltage adjusting function can meet different working voltage parameter requirements among the ultraviolet photoelectric tubes of different types through large adjustment, the solar blind type ultraviolet photoelectric tube is connected with a high-performance 32-bit ARM processor through an ultraviolet signal conditioning circuit, a narrow-band infrared photosensitive tube with a high signal-to-noise ratio is connected with the high-performance 32-bit ARM processor through a multistage infrared signal amplifying circuit, the multistage infrared signal amplifying circuit is simultaneously connected with a self-calibration circuit and a pollution detection circuit, the influence of the cleaning condition of window glass of the detector on the transmittance of a flame spectrum is large, the accurate detection of a fire disaster is seriously influenced if the window glass of a conventional detector is dusty, the pollution detection circuit can give a pollution alarm prompt when the window is polluted, meanwhile, the influence of the high-performance 32-bit ARM processor on the transmittance of the flame spectrum is calculated according to the pollution degree of the window, and a fire disaster identification and judgment algorithm is dynamically adjusted, so that the fire disaster is intelligently and accurately identified, different radiation backgrounds have different influences on the characteristic spectrum of the flame, and the acquisition results of the same flame spectrum signal in strong sunlight and dark background The conventional detectors in the market CAN only be installed in fixed environments generally, the application is limited, when the detectors are applied to different background environments, the background radiation condition CAN be identified intelligently through a self-calibration function processor, the influence on flame characteristic spectrum signals is calculated according to the background radiation condition, and a fire identification judgment algorithm is adjusted correspondingly so as to adapt to different application environments, the incandescent micro-lamp VL1 CAN be used for the self-calibration function, the VL2 CAN be used for the pollution detection function, the consistency adjustment CAN be realized through potentiometers RP1 and RP2 due to the individual difference of the brightness of the incandescent micro-lamp, the high-performance 32-bit ARM processor is connected with the narrow-band infrared photosensitive tube with high signal-to-noise ratio through a self-calibration circuit and the pollution detection circuit, and the high-performance 32-bit ARM processor is connected with the remote terminal through a CAN bus communication interface circuit and an RS485 bus communication interface circuit, The high-performance 32-bit ARM processor is connected with a temperature acquisition circuit, a dial switch circuit, an LED drive circuit, a 4-20 mA current loop circuit, a fire alarm level signal output circuit, an OC door output circuit, two sets of relay drive output circuits and two sets of fire extinguisher drive output circuits at the same time, the high-performance 32-bit ARM processor CAN acquire temperature sensor data in real time through the temperature acquisition circuit, grasp the environment temperature condition, carry out temperature compensation on a fire identification judgment algorithm in real time, CAN quickly set different working modes and detection sensitivities through the dial switch circuit, a remote monitoring terminal or an upper computer CAN monitor the fire condition of an operation field in real time through a CAN bus or an RS485 bus, and the series problems of low efficiency and high cost of manual inspection are avoided, in addition, related parameters CAN be flexibly set through a CAN bus communication interface and an RS485 bus communication interface, in order to meet different use requirements, the CAN bus communication interface circuit supports CAN2.0A and CAN2.0B protocols, the data rate supports up to 1Mbps, the CAN bus transceiver is MAX3051, low-voltage +3.3V single power supply is adopted, surge impact protection is carried out on the CAN bus interface through V28, a terminal matching resistor R101 CAN determine whether to be installed according to the actual networking condition, the data rate of the RS485 bus communication interface circuit supports up to 10Mbps, the transceiver is MAX3485ESA, low-voltage +3.3V surge single power supply is adopted for supplying power, the RS485 bus interface is subjected to surge impact protection through V26, a terminal matching resistor R92 CAN determine whether to be installed according to the actual networking condition, a fire alarm level signal output circuit CAN carry out level signal output through a transistor V14 and has certain driving capability, the internal circuit is protected through self-recovery insurance F3, a processor pin is protected through a diode V13, when no fire alarm signal is output, a low level signal is output, when a fire alarm signal is output, a high level signal is output, an OC gate output circuit can output signals through a transistor V12, R57 plays a role in limiting current, a processor pin is protected through a diode V11, when no fire alarm signal is output, a high resistance signal is output, when a fire alarm signal is output, a low level signal is output, a 4-20 mA current loop circuit can output current signals through a transistor V18 and an MOS tube V19, an internal circuit is protected through a diode V20, an XTR111AIDGQR is adopted as a current output control chip, two groups of relay drive output circuits respectively comprise a normally open contact and a normally closed contact, diodes V42 and V45 play a role in follow current, when a relay coil is powered off, a release path is provided for large instantaneous reverse direction to protect the electromotive force drive transistors V43 and V46, K1 is used for outputting the fire alarm signal, K2 is used for outputting fault signals, two sets of fire extinguisher drive output circuit can realize twice effective fire extinguishing operation, and MOS pipe V38 and V39 are used for heavy current drive output, and when the conflagration took place, start a fire extinguisher and carry out the conflagration and put out a fire and save life, if still detect the conflagration after 5 seconds, the conflagration has not been put out yet promptly, then starts another fire extinguisher and put out a fire and reinforce.
The detection waveband of the solar blind ultraviolet photoelectric tube is an ultraviolet waveband near 0.2um, the detection waveband of the narrow-band infrared photosensitive tube with high signal-to-noise ratio is an infrared waveband near 4.3um, due to the absorption effect of the atmospheric layer on sunlight, as can be seen from figure 2, the sunlight radiation near the 0.2um, 2.7um and 4.3um wavebands is small, the flame spectrum radiation is strong, so the three wavebands are ideal wavebands for optical fire detection, but other common interference light sources near the 2.7um wavebands are strong in radiation, the flame characteristic spectrum radiation signal-to-noise ratio is low, the flame spectrum information on the wavebands is easily submerged by background radiation, while the interference light sources near the 0.2um and 4.3um wavebands are few, the radiation is weak, and the flame spectrum radiation near the 4.3um wavebands reach the peak value, so the wavebands near the 0.2um and 4.3um are ideal as dual-spectrum optical fire detectors, the ultraviolet wave band of 0.2um accessory and the infrared wave band of 4.3um accessory are used for carrying out optical analysis, judgment and identification on the fire, most of interference is filtered out from the signal source head, the signal-to-noise ratio is improved, and the extraction of the spectral characteristic information of the fire is guaranteed.
The power supply conversion scheme of the DC-DC power supply conversion circuit adopts a mode of switching power supply conversion and linear power supply conversion, the switching power supply conversion can realize wide voltage range input of external 9 VDC-32 VDC, the power loss is small, the efficiency is high, the linear power supply conversion can provide a system with a fluctuation-free and relatively stable ideal system power supply, the DC-DC power supply conversion circuit comprises power supply input protection, power supply conversion and power supply filtering, the power supply input protection circuit mainly performs over-current protection, over-voltage protection, reverse connection prevention protection and the like on an external power supply, when the external power supply is in over-voltage, over-current and reverse connection, the internal circuit cannot be damaged, the safety is high, a self-recovery fuse F1 plays a role in over-current protection, a V7 plays a role in over-voltage protection, a V5 plays a role in reverse connection prevention protection, a U7 converts the external power supply into a 5V, u8 converts 5V power supply to 3.3V system power supply, supplies power for high performance 32 bit ARM processor, integrated circuit and system, and the electric capacity and inductance mainly play the filtering role.
The ultraviolet signal conditioning circuit comprises an amplitude limiting circuit and a shaping circuit, wherein a signal directly output by the ultraviolet phototube is a high-voltage pulse signal, if the signal is directly connected to a processor, the processor is damaged, amplitude limiting processing is required, the signal subjected to amplitude limiting processing is a sawtooth wave pulse signal, in order to ensure that the processor can reliably identify the signal, shaping processing is required on the sawtooth wave signal obtained after amplitude limiting processing, the signal subjected to shaping processing is a standard square wave signal, the processor can accurately identify the standard square wave signal, amplitude limiting measures are mainly realized through the voltage division effect of R99, R100 and R102 and the clamping effect of V1, the integral measures are realized through a comparator, the comparator adopts LMV331, and the ultraviolet signal subjected to processing by the conditioning circuit is finally sent to an ARM processor for fire analysis and judgment.
The fire extinguishing controller has the functions of automatic boosting, automatic conversion, automatic spray bottle, semi-automatic spray bottle and other related spray bottle logics completely integrated in a high-performance 32-bit ARM processor, the model of the high-performance 32-bit ARM processor is STM32F103CBT7, the 32-bit ARM processor has strong functions, rich interfaces and high operation speed, and provides guarantee for the rapidity and accuracy of fire judgment and analysis, and based on the strong functions of the high-performance 32-bit ARM processor, the fire detector integrates various output interfaces and bus interfaces and integrates the functions of the fire extinguishing controller without being combined with the controller, and can independently form an automatic fire extinguishing system, when a fire is detected, the special spray bottle logic processing program of the fire extinguishing controller can be operated, the fire extinguishing bottle is started to extinguish the fire, the conventional fire detector only has the fire alarm prompting function, and only has the active fire extinguishing protection function with the special fire extinguishing controller, the fire detector can be compatible with most fire extinguishing controllers to form an automatic fire extinguishing system, and can also independently form the automatic fire extinguishing system, and when a fire disaster occurs, two effective fire extinguishing operations can be realized through the fire extinguisher driving signal output interface.
The multistage infrared signal amplifying circuit adopts a four-stage amplifying circuit, the output signal of an infrared photosensitive tube is millivolt-level weak signal, the weak signal is difficult to accurately identify the fire, so the infrared signal needs to be amplified without distortion for a processor to acquire in real time for fire identification judgment, the conventional detectors on the market at present adopt one-stage or two-stage amplification for processing the infrared signal, the sensitivity is low, the dynamic property is poor, the four-stage amplifying circuit is adopted for amplifying the infrared signal, the fire detection sensitivity is greatly improved, the dynamic property and the accuracy of fire identification are enhanced, an operational amplifier adopts MCP607, B1 is a narrow-band infrared photosensitive tube with high signal-to-noise ratio, R10 is a sampling resistor, the weak infrared signal detected by B1 is sampled by R10 and then amplified, and the processor respectively acquires the post-infrared amplified signal, for fire judgment and analysis.
The high-performance 32-bit ARM processor, the crystal oscillator, the program downloading and debugging interface and the processor peripheral resistance-capacitance circuit form a core control unit processing circuit.
The LED driving circuit comprises an LED indicating lamp which is a red, green and yellow common anode indicating lamp, and the fire alarm and system gives an alarm and prompts in different colors and flashing states when in failure.
The working principle is as follows: firstly, overcurrent protection, overvoltage protection and reverse connection prevention are carried out on an external power supply through a power input protection circuit, then the external power supply is converted into a 3.3V system power supply through a DC-DC power conversion circuit to supply power for a high-performance 32-bit ARM processor, an integrated circuit and a system, more accurate fire data curve simulation and a complex fire identification and judgment algorithm are realized based on the strong performance of the high-performance 32-bit ARM processor, a large amount of fire information experiment data are stored in the ARM processor, ultraviolet infrared spectrum information and environment temperature in the environment are collected in real time, software filtering and temperature compensation are carried out on the collected ultraviolet infrared spectrum information, then relevant calculation and data comparison are carried out, whether a fire disaster happens or not is finally accurately judged according to the mode and the sensitivity state set by a dial switch, if the fire disaster happens, a fire alarm prompt is carried out through an LED indicator lamp, meanwhile, fire alarm signals are output to the output interfaces, relevant fire alarm state information is reported through a CAN bus and an RS485 bus, the LED indicator lamp adopts a red, green and yellow three-color common anode indicator lamp, multiple states of the system CAN be prompted, the LED indicator lamp is in an off state under normal conditions, a green lamp is turned on once every 10 seconds to prompt normal work, when a fire alarm occurs, the red lamp is turned on to prompt a fire disaster, when a fault occurs, a yellow lamp, a red lamp or a green lamp is turned on to prompt a fault, meanwhile, the fire alarm signals are output to the output interfaces, two groups of fire extinguisher driving output circuits are enabled to achieve effective fire extinguishing operation twice, one fire extinguisher is started to extinguish the fire, if the fire is detected after 5 seconds, namely the fire is not extinguished, another fire extinguisher is started to extinguish fire and reinforce, and relevant fire alarm state information is reported through the CAN bus and the RS485 bus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. A high-performance ultraviolet-infrared double-spectrum composite optical fire detector is characterized in that: the external power supply is connected with a power input protection circuit, the power input protection circuit is connected with a high-performance 32-bit ARM processor through a DC-DC power conversion circuit, the power input protection circuit is connected with a solar blind type ultraviolet photoelectric tube through an adjustable high-voltage ultraviolet photoelectric tube power supply circuit, the solar blind type ultraviolet photoelectric tube is connected with the high-performance 32-bit ARM processor through an ultraviolet signal conditioning circuit, a narrow-band infrared photosensitive tube with a high signal-to-noise ratio is connected with the high-performance 32-bit ARM processor through a multi-stage infrared signal amplification circuit, the multi-stage infrared signal amplification circuit is simultaneously connected with a self-calibration circuit and a pollution detection circuit, the high-performance 32-bit ARM processor is simultaneously connected with the narrow-band infrared photosensitive tube with the high signal-to-noise ratio through a self-calibration circuit and a pollution detection circuit, and the high-performance 32-bit ARM processor is connected with a remote terminal through a CAN bus communication interface circuit and an RS485 bus, The high-performance 32-bit ARM processor is connected with a temperature acquisition circuit, a dial switch circuit, an LED drive circuit, a 4-20 mA current loop circuit, a fire alarm level signal output circuit, an OC door output circuit, two sets of relay drive output circuits and two sets of fire extinguisher drive output circuits.
2. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the detection waveband of the solar blind ultraviolet photoelectric tube is an ultraviolet waveband near 0.2um, and the detection waveband of the narrow-band infrared photosensitive tube with a high signal-to-noise ratio is an infrared waveband near 4.3 um.
3. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the power conversion scheme of the DC-DC power conversion circuit adopts a mode of switching power conversion and linear power conversion, and the DC-DC power conversion circuit comprises power input protection, power conversion and power filtering.
4. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the ultraviolet signal conditioning circuit comprises an amplitude limiting circuit and a shaping circuit.
5. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the fire extinguishing controller is characterized in that related spray bottle logics such as automatic reinforcement, automatic conversion, automatic spray bottles, semi-automatic spray bottles and the like are completely integrated in a high-performance 32-bit ARM processor.
6. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the multistage infrared signal amplifying circuit adopts a four-stage amplifying circuit.
7. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the high-performance 32-bit ARM processor, the crystal oscillator, the program downloading and debugging interface and the processor peripheral resistance-capacitance circuit form a core control unit processing circuit.
8. The high-performance ultraviolet-infrared double-spectrum composite optical fire detector as claimed in claim 1, wherein: the LED driving circuit comprises an LED indicator light which is a red, green and yellow common anode indicator light.
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| CN202021224512.3U CN212256533U (en) | 2020-06-29 | 2020-06-29 | High-performance ultraviolet-infrared double-spectrum composite optical fire detector |
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| CN202021224512.3U CN212256533U (en) | 2020-06-29 | 2020-06-29 | High-performance ultraviolet-infrared double-spectrum composite optical fire detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115083103A (en) * | 2022-06-10 | 2022-09-20 | 西安中核核仪器股份有限公司 | Multi-band infrared pyroelectric flame detector based on deep learning and detection method |
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- 2020-06-29 CN CN202021224512.3U patent/CN212256533U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115083103A (en) * | 2022-06-10 | 2022-09-20 | 西安中核核仪器股份有限公司 | Multi-band infrared pyroelectric flame detector based on deep learning and detection method |
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