CN212256535U - High-performance single ultraviolet optical fire detector - Google Patents
High-performance single ultraviolet optical fire detector Download PDFInfo
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- CN212256535U CN212256535U CN202021225256.XU CN202021225256U CN212256535U CN 212256535 U CN212256535 U CN 212256535U CN 202021225256 U CN202021225256 U CN 202021225256U CN 212256535 U CN212256535 U CN 212256535U
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Abstract
The utility model discloses a single ultraviolet optics fire detector of high performance, the blind type ultraviolet phototube of day passes through transition switching circuit and ultraviolet signal conditioning circuit and is connected with 32 position ARM treater of high performance, 32 position ARM treater of high performance are connected with temperature acquisition circuit, dial switch circuit, LED drive circuit, 4 ~ 20mA electric current loop circuit, fire alarm level signal output circuit, OC door output circuit, two sets of relay drive output circuit, two sets of fire extinguisher drive output circuit simultaneously. The utility model discloses in, fire detector can realize conflagration automatic detection and automatic alarm to possess intellectuality, information-based function, stopped the conflagration and leaked the warning potential safety hazard, and realized surveying fast and reporting to the police to the conflagration, improved fire alarm speed and degree of accuracy, can also be used to the fire monitoring under the military armored vehicle engine compartment high temperature environment of special type, also can be used to industry boiler burning and detect, be worth the power promotion.
Description
Technical Field
The utility model relates to a fire detection technical field especially relates to a single ultraviolet optics fire detector of high performance.
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 key effect is played on the fire protection capability of the fire extinguishing system.
In the field of military automatic fire extinguishing and explosion suppression, the application of a conventional infrared optical fire detector and an ultraviolet infrared composite optical fire detector is very limited in high-temperature occasions, the detectors are also required to work in high-temperature environments in the field of industrial boiler detection, and although ultraviolet type fire detectors are used in the market at present, the defects of low sensitivity, easy environmental interference, easy false alarm generation, relatively poor performance, relatively single function and the like basically exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a high-performance single ultraviolet optical fire detector.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-performance single ultraviolet optical fire detector is characterized in that a 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 the transition switching circuit through an adjustable high-voltage ultraviolet phototube power supply circuit, the solar blind type ultraviolet photoelectric tube is connected with the high-performance 32-bit ARM processor through a transition switching circuit and an ultraviolet signal conditioning circuit, the high-performance 32-bit ARM processor is connected with a remote terminal, an upper computer and a controller through a CAN communication interface circuit and an RS485 communication interface circuit, the high-performance 32-bit ARM processor is simultaneously 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.
As a further description of the above technical solution:
the ultraviolet photoelectric tube is a vacuum ultraviolet photomultiplier with the temperature resistance of more than 150 ℃, the temperature resistance of other components is uniform and is more than or equal to 105 ℃, and the installation mode of the ultraviolet photoelectric tube is transition switching installation.
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 power input protection circuit is connected with an external power supply, and the external power supply is 9-32 Vdc.
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 replaces traditional temperature sensing type and smoke sensing type fire detector, has realized surveying fast and reporting to the police to the conflagration, has improved the fire alarm speed and the degree of accuracy, wins the time for the suppression processing of the timely suppression of putting out a fire and explosion of conflagration, ensures the people property and life safety.
3. The utility model discloses in, fire detector replaces linear temperature sensor, can be used for the fire monitoring under the for military use armoured vehicle engine compartment high temperature environment of special type, can survey the engine compartment conflagration fast, and fire extinguishing systems can in time start putting out a fire to the first aid of conflagration to improve armoured vehicle barrier propterty, guarantee fighter life safety promotes army's operational capability, and can be used for the industrial boiler burning to detect, improved industrial production ability.
4. The utility model discloses in, fire detector job stabilization is reliable, and the interference killing feature is strong, and the misstatement rate is low, and stability is high, and the function is strong, and the interface is many, and is compatible good, can conveniently establish excellent performance, low cost's the explosion suppression system of putting out a fire, is worth wideling popularize.
Drawings
Fig. 1 is a schematic block diagram of a high-performance single ultraviolet optical fire detector according to the present invention;
fig. 2 is an ultraviolet adjustable working voltage boost circuit of a high-performance single ultraviolet optical fire detector provided by the utility model;
fig. 3 is an ultraviolet signal conditioning circuit of a high-performance single ultraviolet optical fire detector provided by the present invention;
fig. 4 is a core control unit processing circuit of a high-performance single ultraviolet optical fire detector provided by the present invention;
fig. 5 is a circuit diagram of a CAN bus interface of a high-performance single ultraviolet optical fire detector according to the present invention;
fig. 6 is a RS485 bus interface circuit diagram of a high-performance single ultraviolet optical fire detector provided by the present invention;
fig. 7 is a circuit diagram of a level signal output interface of a high-performance single ultraviolet optical fire detector according to the present invention;
fig. 8 is a circuit diagram of an OC gate signal output interface of a high-performance single ultraviolet optical fire detector according to the present invention;
FIG. 9 is a circuit diagram of a 4-20 mA current loop signal output interface of a high performance single ultraviolet optical fire detector according to the present invention;
FIG. 10 is a circuit diagram of a fire extinguisher driving signal output interface of a high performance single ultraviolet optical fire detector according to the present invention;
fig. 11 is a circuit diagram of a relay driving signal output interface of a high-performance single ultraviolet optical fire detector according to the present invention.
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. 1-11, the present invention provides an embodiment: a high-performance single ultraviolet optical fire detector, a 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 transition switching circuit through an adjustable high-voltage ultraviolet photoelectric tube power supply circuit, the adjustable high-voltage ultraviolet photoelectric tube power supply circuit mainly converts an external power supply into high-voltage output to provide an excitation power supply for an ultraviolet photoelectric tube, the input power supply is subjected to three-stage protection and then enters a power control chip U1 and a coil T1, the power control chip U1 adopts SG3524, the U1 controls the conduction state of the coil T1 through transistors Q1 and Q2 to control the output voltage Vuv and the Vuv to be subjected to voltage division to form negative feedback through 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, a solar blind ultraviolet photoelectric tube is connected with the high-performance 32-bit ARM processor through the transition switching circuit and an ultraviolet conditioning signal circuit, the high-performance 32-bit ARM processor is connected with a remote terminal, an upper computer and a controller through a CAN communication interface circuit and an RS485 communication interface circuit, the CAN communication interface circuit supports CAN2.0A and CAN2.0B protocols, the data rate supports up to 1Mbps, a CAN bus transceiver is MAX3051, low-voltage +3.3V single power supply is adopted for supplying power, 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 communication interface circuit supports up to 10Mbps, the transceiver is MAX3485ESA, low-voltage +3.3V single power supply is adopted for supplying power, surge impact protection is carried out on the RS485 bus interface through V26, the terminal matching resistor R92 CAN determine whether to be installed according to the actual networking condition, the high-performance 32-bit ARM processor is simultaneously connected with a temperature acquisition circuit, a dial switch circuit, an LED drive circuit, a 4-20 current loop circuit and a fire alarm level signal output circuit, OC door output circuit, two sets of relay drive output circuit, two sets of fire extinguisher drive output circuit are connected, through dial switch circuit, sensitivity and working mode can be set flexibly, fire alarm level signal output circuit outputs level signal through transistor V14, and has certain driving capability, internal circuit is protected through self-recovery fuse F3, processor pin is protected through diode V13, when no fire alarm signal exists, low level signal is output, when fire alarm signal exists, high level signal is output, OC door output circuit outputs signal through transistor V12, R57 plays a current limiting role, processor pin is protected through diode V11, when no fire alarm signal exists, high resistance signal is output, when fire alarm signal exists, low level signal is output, 4-20 mA current loop circuit outputs current signal through transistor V18 and MOS tube V19, the diode V20 is used for protecting the internal circuit, the current output control chip adopts XTR111AIDGQR, two groups of fire extinguisher drive output circuits can realize two effective fire extinguishing operations, the MOS tube V38 and the MOS tube V39 are used for large current drive output, when a fire disaster happens, one fire extinguisher is started for fire suppression, if the fire disaster is detected after 5 seconds, namely the fire disaster is not suppressed, the other fire extinguisher is started for fire suppression and assistance, the two groups of relay drive output circuits respectively comprise a normally open contact and a normally closed contact, the diodes V42 and V45 play a follow current role, when the relay coil is powered off, a release path is provided for large instantaneous back electromotive force so as to protect the drive transistors V43 and V46, the K1 is used for fire alarm signal output, the K2 is used for fault signal output, when only partial functions and interfaces are used in a certain specific occasion, the rest unused functions and interfaces can be closed through any communication bus set corresponding parameters, to save power consumption and reduce system complexity.
The ultraviolet phototube is a vacuum ultraviolet photomultiplier which can resist the temperature of more than 150 ℃, the temperature resistance of other components is uniformly more than or equal to 105 ℃, in order to ensure that the fire detector can work in a high-temperature environment, and in order to avoid the interference of sunlight, the ultraviolet phototube adopts a solar blind type ultraviolet phototube, the solar blind type ultraviolet phototube only responds to ultraviolet radiation with the wavelength of 185-260 nm, because the radiation of the sunlight in the wave band is almost completely absorbed by the earth atmosphere and does not reach the earth surface, so the ultraviolet phototube is called as solar blind, the ultraviolet radiation in the wave band is utilized to detect the fire, the background interference can be minimized, the interference source existing in the environment is filtered from a signal source head, the overall reliability of the system is ensured, the installation mode of the ultraviolet phototube is transition and switching installation, and the existing fire detector related to the ultraviolet phototube, the installation mode is that the ultraviolet phototube is directly installed on the mainboard, the installation mode limits that only one type of ultraviolet phototube can be used, a transition switching installation mode is adopted, the mainboard can adapt to the ultraviolet phototube with different packaging types through a transition switching circuit, and the ultraviolet phototube with different types and specifications can be flexibly selected according to different application occasions and use requirements in actual use so as to meet the corresponding performance requirements and reasonably control the cost.
The ultraviolet signal conditioning circuit comprises an amplitude limiting circuit and a shaping circuit, amplitude limiting measures are mainly realized through the voltage division effect of R99, R100 and R102 and the clamping effect of V1, the whole measures are realized through a comparator, the comparator adopts LMV331, and ultraviolet signals processed by the conditioning circuit are finally sent to an ARM processor for fire analysis and judgment.
The fire extinguishing controller has the advantages that the automatic boosting, automatic conversion, automatic spray bottle, semi-automatic spray bottle and other related spray bottle logics are completely integrated in the high-performance 32-bit ARM processor, so that the fire extinguishing controller has the functions of a fire detector and a fire extinguishing controller at the same time, based on the powerful function of the high-performance 32-bit ARM processor, the fire detector integrates various output interfaces and bus interfaces, meanwhile, the fire extinguishing controller is integrated, the fire extinguishing controller is not required to be connected with the controller in a combined mode, the fire extinguishing controller can independently form an automatic fire extinguishing system, when a fire is detected, the specific spray bottle logic processing program of the fire extinguishing controller can be operated, and the fire extinguishing bottle is automatically started to extinguish the fire.
The power input protection circuit is connected with an external power supply and the external power supply is 9-32 Vdc, the power input protection circuit mainly performs overcurrent protection, overvoltage protection, reverse connection protection and the like on the external power supply, when the external power supply is in overvoltage, overcurrent and reverse connection, the internal circuit cannot be damaged, the safety is high, the DC-DC power conversion circuit can convert the external power supply into a 3.3V system power supply and supplies power for an ARM processor, an integrated circuit and a system.
The high-performance 32-bit ARM processor, the crystal oscillator, the program downloading and debugging interface and the resistance-capacitance circuit on the periphery of the processor form a core control unit processing circuit, the high-performance 32-bit ARM processor adopts STM32F103CBT7 of ST company, and based on the strong performance of the ARM processor, relatively accurate fire data curve simulation and complex fire identification and judgment algorithms are realized, a large amount of fire information experimental data are stored in the ARM processor, ultraviolet information and environmental temperature of an environmental spectrum are collected in real time, carrying out software filtering and temperature compensation on the collected ultraviolet information, then carrying out related calculation and data comparison, finally, accurately judging whether a fire disaster occurs or not according to the mode and the sensitivity state set by the dial switch, if the fire disaster occurs, carrying out fire alarm prompt through an LED indicating lamp, meanwhile, the fire alarm signals are output to each output interface, and relevant fire alarm state information is reported through a CAN bus and an RS485 bus.
LED drive circuit includes that LED pilot lamp and LED pilot lamp are red, green, yellow three-colour and share positive pole pilot lamp, can indicate system's multiple state, and LED pilot lamp is the off-state under the normal condition, and every interval 10 seconds lights a green light suggestion normal operation, and the time of appearing the fire is lighted the red light and is carried out fire alarm suggestion, lights yellow light, red light or green light when breaking down and carries out the fault indication.
The working principle is as follows: firstly, the power input protection circuit is used for carrying out overcurrent protection, overvoltage protection and reverse connection protection on an external power supply, then the DC-DC power conversion circuit is used for converting the external power supply into a 3.3V system power supply to supply power for an ARM processor, an integrated circuit and a system, meanwhile, the adjustable high-voltage ultraviolet phototube power supply circuit is used for converting the external power supply into high-voltage output to provide an excitation power supply for an ultraviolet phototube, then the high-performance 32-bit ARM processor collects ultraviolet information and environmental temperature of environmental spectrum in real time through a solar blind type ultraviolet phototube and a temperature sensor, carries out software filtering and temperature compensation on the collected ultraviolet information, carries out related calculation and data comparison, finally accurately judges whether a fire disaster occurs or not according to the mode and the sensitivity state set by a dial switch, and carries out fire alarm prompt through an LED indicator lamp if the fire disaster occurs, meanwhile, fire alarm signals are output to the output interfaces, two groups of fire extinguisher drive output circuits are used for realizing two effective fire extinguishing operations, one fire extinguisher is started to extinguish a fire, if the fire is detected after 5 seconds, namely the fire is not extinguished, the other fire extinguisher is started to extinguish the fire and reinforce the fire, 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 (7)
1. A high performance single ultraviolet optical fire detector is characterized in that: the solar energy fire extinguisher is characterized in that the power input protection circuit is connected with the high-performance 32-bit ARM processor through a DC-DC power conversion circuit, the power input protection circuit is connected with the transition switching circuit 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 the transition switching circuit and an ultraviolet signal conditioning circuit, the high-performance 32-bit ARM processor is connected with a remote terminal, an upper computer and a controller through a CAN communication interface circuit and an RS485 communication interface circuit, and the high-performance 32-bit ARM processor is simultaneously 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.
2. A high performance single ultraviolet optical fire detector as claimed in claim 1, wherein: the ultraviolet photoelectric tube is a vacuum ultraviolet photomultiplier with the temperature resistance of more than 150 ℃, the temperature resistance of other components is uniform and is more than or equal to 105 ℃, and the installation mode of the ultraviolet photoelectric tube is transition switching installation.
3. A high performance single ultraviolet optical fire detector as claimed in claim 1, wherein: the ultraviolet signal conditioning circuit comprises an amplitude limiting circuit and a shaping circuit.
4. A high performance single ultraviolet 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.
5. A high performance single ultraviolet optical fire detector as claimed in claim 1, wherein: the power input protection circuit is connected with an external power supply, and the external power supply is 9-32 Vdc.
6. A high performance single ultraviolet 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.
7. A high performance single ultraviolet 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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| Application Number | Priority Date | Filing Date | Title |
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| CN202021225256.XU CN212256535U (en) | 2020-06-29 | 2020-06-29 | High-performance single ultraviolet optical fire detector |
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| CN202021225256.XU CN212256535U (en) | 2020-06-29 | 2020-06-29 | High-performance single ultraviolet optical fire detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589292A (en) * | 2024-01-18 | 2024-02-23 | 太原晋贵信息技术服务中心 | Two-in-one flame detector for double-red-one-purple fire explosion |
-
2020
- 2020-06-29 CN CN202021225256.XU patent/CN212256535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589292A (en) * | 2024-01-18 | 2024-02-23 | 太原晋贵信息技术服务中心 | Two-in-one flame detector for double-red-one-purple fire explosion |
| CN117589292B (en) * | 2024-01-18 | 2024-04-26 | 太原晋贵信息技术服务中心 | Two-in-one flame detector for double-red-one-purple fire explosion |
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