CN102008796B - Software and hardware combined gas fire extinguishing valve driving method - Google Patents
Software and hardware combined gas fire extinguishing valve driving method Download PDFInfo
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- CN102008796B CN102008796B CN2010105917752A CN201010591775A CN102008796B CN 102008796 B CN102008796 B CN 102008796B CN 2010105917752 A CN2010105917752 A CN 2010105917752A CN 201010591775 A CN201010591775 A CN 201010591775A CN 102008796 B CN102008796 B CN 102008796B
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Abstract
The invention provides a software and hardware combined gas fire extinguishing valve driving method. After receiving fire alarm signals of two paths of detectors, a controller judges arrival time difference of the signals of the two paths of detectors; if the time difference of the two paths of signals is 1ms or within 1ms, the controller does not send a starting command out and only prompts the system that fire alarm occurs; and if the time difference of the two paths of signals is more than 1ms, the controller sends the starting command out to start a sprinkling electromagnetic valve so as to send fire alarm information out. By the method, a loop for driving the electromagnetic valve is safe and reliable and the sprinkling error rate is low.
Description
Technical field
The present invention relates to the mode that gas fire-fighting controller combines through software and hardware in the fire alarm system and drive the interface that sprays magnetic valve, start the method for extinction using gas equipment.
Background technology
The current standard GB16806-2006 of China " fire protection linkage control system " regulation; Gas fire-fighting controller should be able to be after receiving a road feel smoke detector signal and a road feel temperature detector signal, send the start-up control signal; Behind the delay time of setting, start the sprinkling magnetic valve and put out a fire, and can spray signal, fault-signal, selector valve and bottle valve actuating signal by receiver gases to spray fire-suppressant gas.After the method for the gas fire-fighting controller driving magnetic valve in the industry generally adopts controller to receive the fire alarm of a road feel smoke detector and a road feel temperature detector now; Whether the AD value of judging the input end through software is fire alarm; After confirming to be the two-way fire alarm; Through giving an order behind the delay time of setting, drive the action of sprinkling magnetic valve to spraying solenoid relay valve.This method is receiving very strong jamming or is receiving under the situation of thunder and lightning interference usually; May wrong startup spray magnetic valve; The compression fire-suppressant gas of system is all spurted, because the fire-suppressant gas of these compressions costs an arm and a leg, some gas has detrimental effect, also can cause pollution to a certain degree to atmosphere and environment human body and article; And in a single day these gases spurt and can't stop; In case therefore the spray of system's mistake can make owner's life and property receive very big loss, and environment is caused very big pollution.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of extinction using gas of software and hardware combining to drive the valve method, this method makes the loop safety and reliability that drives magnetic valve, and mistake spray rate is low.
Technical scheme of the present invention is: a kind of extinction using gas of software and hardware combining drives the valve method; It is characterized in that: after controller receives the fire alarm of two-way detector; Can judge the time difference that the two-way detector signal arrives; If the time difference of two paths of signals, controller then can not send startup command within 1ms or 1ms, only prompt system has fire alarm to take place; If the time difference of two paths of signals, controller then can send startup command greater than 1ms, start and spray magnetic valve, send fire alarm information.
Controller of the present invention comprises smoke detector loop and heat detector loop, triode Q1, Q2 relay J 1, relay J 2; Wherein the smoke detector loop comprises smoke detector, comparator A and B, resistance R 1, R5, R6, R9, R10, R11; Wherein the normal phase input end of comparator A is connected with R5; Inverting input is connected with R11, and the normal phase input end of comparator B is connected with R11, and inverting input is connected with R6; The heat detector loop comprises heat detector, comparator C and D, resistance R 1, R5, R6, R7, R8, R12; Wherein the normal phase input end of comparator C is connected with R5; Inverting input is connected with R12, and the normal phase input end of comparator D is connected with R12, and inverting input is connected with R6; The base stage of triode Q1 is connected with resistance R 3, and emitter stage is connected with ground, and colelctor electrode is connected with relay J 1; Triode Q2 base stage is connected with R, and emitter stage is connected with ground, and colelctor electrode is connected with relay J 2.
The extinction using gas that advantage of the present invention provides a kind of software and hardware combining drives the valve method, and this method makes the loop safety and reliability that drives magnetic valve, and mistake spray rate is low, system reliability is high.Technology of the present invention also can be applicable in the miscellaneous cause warning system.
Description of drawings
Fig. 1 is a software block diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
The specific embodiment
As shown in Figure 1; After controller receives the fire alarm of two-way detector, can judge the time difference that the two-way detector signal arrives, if the time difference of two paths of signals is within 1ms or 1ms; Controller then can not send startup command, and only prompt system has fire alarm to take place; If the time difference of two paths of signals, controller then can send startup command greater than 1ms, start and spray magnetic valve, send fire alarm information.
Because from physical characteristic; Sense cigarette and heat detector are impossible simultaneous within 1ms; This situation can only be that interfering signal could produce, so have only the time difference of working as two signals greater than more than the 1ms, controller just can send the order that starts magnetic valve; After having got rid of system and receive very strong interfering signal from software like this, and make the possibility of system's misoperation.
Any electronic circuit all might cause the possibility of system's misoperation owing to components from being damaged, and in order further to improve its reliability, the double protection method that the present invention adopts soft or hard to combine is greatly improved the reliability of system.Circuit diagram is as shown in Figure 2, and its operation principle is following:
1, when the heat detector loop just often; The voltage of smoke detector loop signal is 20V; Be that the inverting input of comparator C and the normal phase input end voltage of comparator D are 20V,, be set to 12V and 2V respectively because the normal phase input end of comparator C and the inverting input of comparator D are used as reference voltage end; At this moment the logic level of comparator C output is 0, and the logic level of comparator D output is 1.
In like manner, when the smoke detector loop also is in just often, the logic level of comparator A output is 0, and the logic level of comparator B output is 1 and since the logic level of comparator C, D, A, B output be with relation; So triode Q1 base stage input logic level is 0, i.e. the voltage of triode Q1 base stage input is 0, not conducting of triode Q1, and relay J 1 does not start.Since drive the output of output and the relay J 1 of valve output relay J2 and be with relation; No matter at this moment whether the CPU enabling signal is 1; The valve output of driving of driving valve output relay J2 does not have voltage output, has improved system's anti-jamming capacity, and system's misoperation rate is reduced greatly.
2, when the circuit of smoke detector or heat detector is short-circuited, soft, the hardware of system can not start yet and drives valve relay, and software can be judged fire alarm or short circuit through the AD value size of input end; Simultaneously, hardware circuit also can be judged it.
When the line short circuit of heat detector; The heat detector voltage of signals is 0; Be that the inverting input of comparator C and the normal phase input end voltage of comparator D all are 0,, be set to 12V and 2V respectively because the normal phase input end of comparator C and the inverting input of comparator D are used as reference voltage end; At this moment the logic level of comparator C output is 1, and the logic level of comparator D output is 0; Since the logic level of comparator C, D, A, B output be with relation; No matter so how many smoke detector signals imports, triode Q1 base stage input logic level all is 0, i.e. the voltage of triode Q1 base stage input is 0; Not conducting of triode Q1, relay J 1 does not start.Since drive the output of output and the relay J 1 of valve output relay J2 and be with relation; No matter at this moment whether the CPU enabling signal is 1; The valve output of driving of driving valve output relay J2 does not have voltage output, has eliminated the possibility because of system detector line short triggering system.
In like manner, the situation when the line short of smoke detector is identical with the line short situation of above-mentioned heat detector, repeats no more here.
3, when heat detector detects fire alarm; The voltage of heat detector loop signal is 4V; Be that the inverting input of comparator C and the normal phase input end voltage of comparator D are 4V,, be set to 12V and 2V respectively because the normal phase input end of comparator C and the inverting input of comparator D are used as reference voltage end; At this moment the logic level of comparator C output is 1, and the logic level of comparator D output is 1.
In like manner; When the smoke detector loop also detected fire alarm, the smoke detector voltage of signals was 4V, and the logic level of comparator A output is 1; The logic level of comparator B output is 1 and since the logic level of comparator C, D, A, B output be with relation; So triode Q1 base stage input logic level is 1, triode Q1 saturation conduction, magnetic valve J1 is closed; Simultaneously, software judges that through the AD value size of two paths of signals test side when being fire alarm, CPU enabling signal logic level is at 1 o'clock; Relay J 2 starts; Making and driving the voltage that valve output drives valve output is 24V, starts and sprays relay, that is start and spray magnetic valve; Make system spray high-pressure extinction gas and put out a fire, controller is accepted corresponding enabling signal simultaneously.
Claims (1)
1. the extinction using gas of a software and hardware combining drives the valve method; It is characterized in that: after controller receives the fire alarm of two-way detector; Can judge the time difference that the two-way detector signal arrives; If the time difference of two paths of signals, controller then can not send startup command within 1ms, only prompt system has fire alarm to take place; If the time difference of two paths of signals, controller then can send startup command greater than 1ms, start and spray magnetic valve, send fire alarm information;
Said controller comprises smoke detector loop, heat detector loop, triode Q1, triode Q2, relay J 1, relay J 2, and wherein the smoke detector loop comprises smoke detector; Comparator A (5) and comparator B (6); Resistance R 1, R5, R6, R9, R10, R11, wherein the normal phase input end of comparator A (5) is connected with R5, and inverting input is connected with R11; The normal phase input end of comparator B (6) is connected with R11, and inverting input is connected with R6; The heat detector loop comprises heat detector; Comparator C (3) and comparator D (4); Resistance R 1, R5, R6, R7, R8, R12, wherein the normal phase input end of comparator C (3) is connected with R5, and inverting input is connected with R12; The normal phase input end of comparator D (4) is connected with R12, and inverting input is connected with R6; The base stage of triode Q1 is connected with resistance R 3, and emitter stage is connected with ground, and colelctor electrode is connected with relay J 1; Triode Q2 base stage is connected with resistance R, and emitter stage is connected with ground, and colelctor electrode is connected with relay J 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105917752A CN102008796B (en) | 2010-12-16 | 2010-12-16 | Software and hardware combined gas fire extinguishing valve driving method |
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| CN2010105917752A CN102008796B (en) | 2010-12-16 | 2010-12-16 | Software and hardware combined gas fire extinguishing valve driving method |
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| CN102008796B true CN102008796B (en) | 2012-06-27 |
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| CN109304001A (en) * | 2018-10-24 | 2019-02-05 | 陕西聚慧消防科技有限公司 | A kind of self-extinguishing induction driving circuit |
| CN110865496A (en) | 2019-11-07 | 2020-03-06 | 深圳市华星光电半导体显示技术有限公司 | Display panel, preparation method thereof and display device |
| CN111739247A (en) * | 2020-06-22 | 2020-10-02 | 中国民用航空飞行学院 | Airplane fire detection system and method based on Internet of things and infrared detection technology |
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| KR20020073231A (en) * | 2001-03-30 | 2002-09-23 | 김미현 | Digital wireless fire detection & warning system |
| KR20070102042A (en) * | 2006-04-13 | 2007-10-18 | 주식회사 현대오토넷 | Vehicles fire automatic suppression device and control method |
| US20080000650A1 (en) * | 2006-06-30 | 2008-01-03 | Lg Electronics Inc. | Cooking appliance |
| CN101670159B (en) * | 2009-10-23 | 2012-07-18 | 中兴通讯股份有限公司 | Base station fire extinguishing device and method |
| CN102110340A (en) * | 2009-12-29 | 2011-06-29 | 上海能济电气有限公司 | Wireless alarming fire-extinction terminal monitor for forest fire |
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