CN104036610B - Fire alarm wireless telecommunications base - Google Patents
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- CN104036610B CN104036610B CN201310506994.XA CN201310506994A CN104036610B CN 104036610 B CN104036610 B CN 104036610B CN 201310506994 A CN201310506994 A CN 201310506994A CN 104036610 B CN104036610 B CN 104036610B
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Abstract
The invention discloses a kind of fire alarm wireless telecommunications base, comprise antenna and base housing, in base housing, be provided with circuit board and alarm broadcast unit, circuit board is provided with wireless communication module, wireless communication module comprises RF front-end transceiver, FLASH memory, RAM memory and MCU control module, and alarm broadcast unit comprises loudspeaker, sounding chamber, is located at speech IC and power amplifier on circuit board. Fire alarm wireless telecommunications base of the present invention, possesses evacuation alarm function, the monitoring of node signal loss, work period low-power consumption long-life; Can carry out separately combination with all kinds of free-standing fire trigger devices or linking fire device etc. by surface structure design, thereby form wireless fire disaster alarm terminal product, become the important front end component of a kind of desirable wireless fire disaster alarm system, be with a wide range of applications.
Description
Technical field
The present invention relates to fire protection warning field, more particularly relate to a kind of fire alarm channel radioNews base.
Background technology
Wireless fire disaster alarm system, than wired fire alarm system, has mounting or dismounting easy to maintenance, noNeed the advantages such as wiring operation, the field that is specially adapted to those and has built up and need to install fire alarmInstitute. But apply now wireless fire disaster alarm system, in system architecture, product form, transmissionAll there are some problems in the aspect such as pattern, battery, not yet reaches wired alarming systemRipe level, restrict it and applied, specific as follows:
1), owing to relating to people life property safety, fire detecting and alarm product is that China is real the earliestThe product of the mandatory 3C certification of row, has the strict market access and quality monitoring system. At presentThe way of generally taking is to adopt free-standing smoke sensitive fire hazard detection alarm, by adding channel radioNews means, composition wireless fire disaster alarm system. Due to free-standing smoke sensitive fire hazard detection alarm itselfThere is standalone probe alert capability, belong to onsite alarming product, therefore, needn't pass through wired connectionRealize remote alarms. The wireless system of setting up on free-standing smoke sensitive fire hazard detection alarm basisBe a kind of warning function extension expansion, do not destroy scene of fire and report to the police, can bring into play again wireless telecommunicationsAdvantage, realize concentrated alarm, find early the condition of a fire thereby reach, notify early operator on duty to carry outThe object of fire fighting and rescue activity, minimizing causality loss and casualties. This type systematic forms pattern and existsIn regulation, allow. This type systematic enjoys high praise at present, even passes through to formulate ground in drug in some provincesMethod advises to support to apply. But in specific product form, some manufacturers are for attractive in appearance and contractingSmall size, directly embeds group in free-standing detector narrow space by wireless communication assembly or moduleBecome wireless detector, even both share Battery packs, structurally with electric on cause mutual shadowRing, heavy damage the coherence request of certified product, belong to severe prohibitive behavior.
2) can the transmission mode of wireless fire disaster alarm system to sending in time fire alarm and faultReport to the police significant. According to GB4717-2005 " fire alarm control unit " standard, fireAlert time delay is not more than 10s, and fault alarm time delay is not more than 100s. Owing to being subject to fire detectorThe restriction of volume restrictions and battery capacity and durability, surveys at the wireless fire disaster of practical application at presentDevice only has emission function. Adopt single-shot type communication mode: the warning in wireless fire disaster alarm systemMain frame is only operated in accepting state at ordinary times, and that fire detector does not need to launch is under normal circumstances assortedInformation, can not work in dormancy, not power consumption substantially. Sense cigarette part in fire detector is adoptedBy interval work mode, only in the time there is the condition of a fire or breakdown detector, just initiatively send out to alarm host machineSend fire or fault-signal, so the average power consumption electric current of whole fire detector can be very little, bandThe benefit of coming is that the working life of fire detector battery is longer. But the weak point of single-shot typeBe: the signal that fire detector sends out automatically can be along with in whole wireless fire disaster alarm systemFire detector quantity increase and the phenomenon of competing, cannot make numerous fire detectors meet ruleFixed delay requirement, does not meet GB4715-2005 standard-required. Secondly, once certain surveys electricityLost efficacy or be stolen in road, this fire detector itself forever can not sent out signal, makes alarm host machine eternalDo not identify the loss fault of detector, thereby produce and fail to report accident at crucial moment, this isGB4715-2005 standard institute is unallowed. Concerning an outstanding wireless fire disaster alarm system,It is a basic function that wireless detector is carried out to malfunction monitoring. Ideally, radio alarming masterMachine should initiatively periodically be inquired about wireless detector state, and forced detection terminal is beamed back answer signal, andShi Faxian failure phenomenon. Therefore it is necessary, adopting two communication modes. But adopt two communications of sending outPattern makes the necessary moment of wireless detector in accepting state, and will regularly reply, and this will disappearConsume a large amount of electric energy, be difficult to meet the requirement of long battery, this is also that most of producer gives upThe reason of two communication modes.
3) length of fire detector battery determines the battery altering cycle, and this is for peopleWhether be ready to use its tool marginal. For strengthening Fire Escape, strengthen the whole society and supportThe ability of imperial fire, the Fire-Fighting Bureau under the Ministry of Public Security issued on July 21st, 2006 " should about promotingBy the notice of the fire preventions such as free-standing smoke-sensitive alarm device " (public affairs disappear [2006] No. 300), clearly refer toGo out, existing NFA technical specification not yet specify to arrange automatic fire alarm system building andPlace, should carry out installing free-standing automatic fire alarm. In China at present,Rise the upsurge that one promotes free-standing detecting alarm. According to GB20517-2006 " stand alone typeSmoke sensitive fire hazard detection alarm " requirement, the battery of free-standing detecting alarm is minimumRequirement is 1 year. This is 1 year replacing one-shot battery of the shortest needs of meaning this detector of use just. OrderOn front market, most of free-standing detecting alarm indexs are 1 year, just meet national standardLow requirement. But to most users, particularly for some special populations (old, weak,Residual etc.), such replacement cycle is too short, endurable. Because the time is too short, fire is visitedOwe electricity once survey device, as changed not in time, can send ear-piercing prompting sound, disturb user's workDo or living environment. Make user have to take following measure, take off detector, be discarded on one side.Thereby things turn out contrary to one's wishes, do not reach the effect of security against fire protection. Although in recent years along with low-power consumption electricityThe appearance of sub-components and parts and high-energy battery, the battery of free-standing detecting alarm greatlyImprove, the detector that is greater than more than 1 year battery occurs, still, still can notMeet people's demand. In fact, different user has different requirements to the time of changing battery.For example: school dormitory of colleges and universities wishes to be at least greater than 4 years, follow student and graduate change-session and change onceBattery; The user of family wishes that the longer the better, at least should be greater than 5 years, avoids battery altering bandThe trouble of coming. Current, to adopt wireless radio-frequency to combine with standalone probe alarm technique technologyScheme is to promote the important trend of free-standing detection alarm device, for wireless fire disaster detector,Succeed and apply, its wireless telecommunications part should keep identical consistent with detecting alarm partBattery, this is the utmost point for adopting two outstanding wireless alarm systems of sending out communication modesTool challenge. Therefore, how taking into account warning performance and energy-conservation requirement is a key technology.
4) wireless fire disaster detector, except self detecting the condition of a fire, sends outside fire alarm automatically, can alsoAfter radio gang instruction, initiatively send evacuation alarm receiving, this evacuates escape for during Initial Stage of FireCan play the effect of emergent accident broadcast. As everyone knows. When breaking out of fire, unique escape opportunityIt is exactly during Initial Stage of Fire. Substantially just there is no the ability of self-escape once miss this opportunity, also severalThe hope of just not surviving. During Initial Stage of Fire, comburant can produce a large amount of toxic gases. ThisA little gas can make people suffocate to lose escape ability, even direct causing death quiet and silently. And thisA little gas is difficult to again be found, and especially people are sleeping soundly when middle, when this is also night breaking out of fireThe immediate cause that mortality is high. External experience shows, fire alarm facility is setMust just can obtain best escape effect with emergency broadcase system interlock. In residential building, schoolThe place that the personnel such as dormitory building and large-scale fairground are intensive, mostly not installation accident broadcast system.Even if there is installation, be also local layout in public corridor etc. Its sound sending is for closed roomInterior heavy sleepers often do not have the effect waking up in time. At present, promote in this class occasionFree-standing fire detector is installed, can utilize completely this class detector in the time that fire occurs closelySend sound alarm sound, remind people to withdraw immediately. Therefore, have the nothing of evacuation alarm function concurrentlyLine fire detector will be more popular to people, have more application value.
Summary of the invention
For the defect existing in prior art, the object of this invention is to provide a kind of fire alarm withoutLine communication base.
For achieving the above object, the present invention adopts following technical scheme:
A kind of fire alarm wireless telecommunications base, comprises antenna and base housing, described base shellIn body, be provided with circuit board and alarm broadcast unit, described circuit board is provided with wireless communication module,Described wireless communication module comprise RF front-end transceiver, FLASH memory, RAM memory andMCU control module, one end of described RF front-end transceiver is connected with antenna, RF front-end transceiverThe other end be connected with MCU control module, described FLASH memory and RAM memory all withMCU control module is connected;
Described alarm broadcast unit comprises loudspeaker, sounding chamber, it is integrated to be located at voice on circuit boardCircuit and power amplifier, described loudspeaker is located in sounding chamber, and described MCU control module passes throughBe connected with loudspeaker by speech IC and power amplifier successively;
Described MCU control module be also provided with the interlock output interface that is connected with linking fire device andThe warning input interface being connected with fire trigger device;
Also comprise the battery for power supply is provided to fire alarm wireless telecommunications base, described battery is establishedIn base housing;
Real by wireless transmission method between described fire alarm wireless telecommunications base and alarm host machineExisting both-way communication.
On described circuit board, be also provided with voltage detecting circuit, an input of described voltage detecting circuitBe connected with described battery, another input with in linking fire parts from charged pool be connected or withBeing connected from charged pool in fire trigger device;
Mould/number conversion interface phase in the output of described voltage detecting circuit and MCU control moduleConnect.
Described warning input interface is passive contact type structure.
Described fire trigger device is that free-standing smoke sensitive fire hazard detection alarm or non-addressing type are manualFire Alarm Button.
Described linking fire device is fire acousto-optic alarm.
Described fire alarm wireless telecommunications base adopts snap device and linking fire device or fireTrigger device is connected.
The wireless frequency of described wireless communication module adopts the one in following ISM band, described inISM band comprises 434MHz, 470MHz, 860MHz, 900MHz and 2.4GHz.
The alarm signal volume that described MCU control module control alarm broadcast unit sends is from 45dB increases to 75dB gradually.
Described warning input interface comprise warning comparator, open circuit comparator, short circuit comparator andPull-up resistor,
One input of described warning comparator is connected with the outer end of pull-up resistor, described warning comparisonAnother input of device is connected with the inner of pull-up resistor by the first divider resistance group, described warningThe output of comparator is connected with MCU control module;
One input of described open circuit comparator is connected with the outer end of pull-up resistor, described open circuit comparisonAnother input of device is connected with the inner of pull-up resistor by the second divider resistance group, described open circuitThe output of comparator is connected with MCU control module;
One input of described short circuit comparator is connected with the outer end of pull-up resistor, and described short-circuit ratioAnother input of device is connected with the inner of pull-up resistor by the 3rd divider resistance group, described short circuitThe output of comparator is connected with MCU control module.
Described wireless communication module intercept electric current≤7uA, average quiescent current≤3uA, receptionSensitivity≤-112dbm, emission maximum electric current≤64mA, transmitting power is at 1dbm～17dbm modelEnclose interior adjustable.
Described battery adopts lithium battery, and its capacitance is greater than 2600mAh, described fire alarm withoutThe average operating current of line communication base is less than 33uA.
Described wireless communication module automatically woke up and entered every one second and intercepts the work period, intercepted workAs the cycle be 1ms, described in intercept the work period and comprise following task:
1) wireless communication module is monitored the fire trigger device connecting and whether is sent fire alarm,If fire trigger device sends fire alarm, wireless communication module sent to alarm host machine in 3 secondsFire alarm;
2) wireless communication module is monitored the fire trigger device connecting and whether is had short circuit or open circuitFault, if there is above-mentioned fault, wireless communication module sent event to alarm host machine in 100 secondsBarrier signal;
3) whether wireless communication module monitoring alarm host machine sends evacuation alarm signal, if receiveEvacuation alarm signal, judgement:
If what a) be connected with described fire alarm wireless telecommunications base is fire trigger device,In 3 seconds, send chimes of doom by alarm broadcast unit;
If what b) be connected with described fire alarm wireless telecommunications base is linking fire device,By linking fire device, this sent chimes of doom in 3 seconds.
1) described wireless communication module is monitored the fire trigger device connecting and whether is sent fire alarm letterNumber, if fire trigger device sends fire alarm, wireless communication module repeats with 2 seconds intervals immediatelySend fire alarm to alarm host machine 5 times;
2) described wireless communication module monitor the fire trigger device connecting whether exist short circuit orOpen fault, if there is above-mentioned fault, wireless communication module repeats 10 times with 5 seconds intervals immediatelySend fault-signal to alarm host machine.
Described MCU control module was controlled described voltage detecting circuit every 300 seconds and is gathered its inputMagnitude of voltage, and the voltage value signal collecting is sent to alarm host machine.
Compared with prior art, adopt a kind of fire alarm wireless telecommunications base of the present invention have withLower advantage:
1, the present invention adopts independent seats structure, integrated wireless telecommunications, alarm sound, batteryAn and function such as detection. In physical space, join with all kinds of free-standing fire trigger devices or fireMoving device is realized hard connection physically, realize signal passive on electric and connect, common composition asWireless fire disaster detector, wireless manual pull station and wireless acoustooptic alarm etc., both ensuredWireless detector structural integrity, property aesthetic in appearance, do not destroy again the performance one that has warning productCausing property, thus meet the strict demand of fire protection alarm system produce market access. This is current this classThe optimal morphology of wireless product and development trend.
2, the present invention adopts both-way communication pattern (two patterns). The decapacitation of wireless telecommunications base initiativelySend fire alarm and fault-signal, reach fire alarm time delay and be not more than 10s, short trouble and open circuit eventBarrier warning time delay not too, outside the key index of 100s, can also receive warning main website connection by real-time listeningNetwork signal, return response signal, thus find in time fire alarm wireless telecommunications base dropoutEtc. phenomenon of the failure, avoid the generation that in detector protection zone, fire is failed to report accident.
3, the present invention adopts powered battery in the wireless telecommunications base confined space. Two-way for meetingCommunication need, has adopted the low-power consumption treatment technologies such as micro-electric current is intercepted, gap communication, makes normalThe lower wireless base average power consumption of monitoring is less than 33uA, is not less than 2600mAh powered battery in employingUnder condition, the working time is greater than 5 years, thereby has taken into account warning performance and energy-conservation requirement, significantly prolongsGrow the cycle of changing battery, reached market scale and applied desired requirement.
4, the present invention is provided with evacuation alarm device, wireless when listening in wireless telecommunications baseAfter interlock instruction, can start rapidly evacuation alarm function. The fire no matter wireless telecommunications base combinesWhether calamity trigger device in alarm condition, the wireless telecommunications base sound that all can independently give the alarm.At during Initial Stage of Fire, utilize these to be arranged in a large number the wireless fire disaster detector in enclosure space, can andShi Tongzhi and wake the people in sleeping soundly up, catches the intensity of a fire initial stage to spread the opportune time more slowly and carries outEvacuate escape, thereby save more life.
In sum, compared with prior art, fire alarm wireless telecommunications base of the present invention is usefulEffect is: a kind of wireless telecommunications base of the confined space, possesses evacuation alarm function, node signalLose monitoring, work period low-power consumption long-life; By surface structure design can with all kinds of stand alone typesFire trigger device or linking fire device etc. carry out separately combination, report to the police thereby form wireless fire disasterEnd product, becomes the important front end component of a kind of desirable wireless fire disaster alarm system, has extensivelyUsing value. Feature of the present invention is that current like product is not available, and the present invention is particularly suitable forIn building, dormitory, the personnel such as high residential building resident family, large-scale country fair, the home for the aged, kindergartenIntensive place.
Brief description of the drawings
Fig. 1 is the principle schematic of fire alarm wireless telecommunications base of the present invention;
Fig. 2 is the principle schematic of the wireless communication module in Fig. 1;
Fig. 3 is the principle schematic of the alarm broadcast unit in Fig. 1 and the output interface that links;
Fig. 4 is the principle schematic of the warning input interface in Fig. 1;
Fig. 5 is the schematic flow sheet of the voltage detecting circuit in Fig. 1;
Fig. 6 is the schematic appearance of Application Example 1 of the present invention;
Fig. 7 is the principle schematic of Application Example 1 of the present invention;
Fig. 8 is the schematic appearance of Application Example 2 of the present invention;
Fig. 9 is the principle schematic of Application Example 2 of the present invention;
Figure 10 is the schematic appearance of Application Example 3 of the present invention;
Figure 11 is the principle schematic of Application Example 3 of the present invention.
Detailed description of the invention
Further illustrate technical scheme of the present invention below in conjunction with drawings and Examples.
Refer to a kind of fire alarm wireless telecommunications base shown in Fig. 1, comprise antenna 11 andBase housing 12, is provided with circuit board 13 and alarm broadcast unit, circuit in base housing 12Plate 13 is provided with wireless communication module 15, below the wireless frequency of wireless communication module can adoptOne in ISM band, described ISM band comprises 434MHz, 470MHz, 860MHz, 900MHzAnd 2.4GHz. For example, can to select Shanghai to patrol fast Information technology limited for wireless communication module 15The SmartNode of company wireless communication module (specifically shown in Figure 2), it comprises RF front end receiptsHair device 151, FLASH memory 152, RAM memory 153 and MCU control module 154,One end of RF front-end transceiver 151 is connected with antenna 11 by feeder line, RF front-end transceiver 151The other end be connected with MCU control module 154, FLASH memory 152 and RAM memory153 are all connected with MCU control module 154; MCU control module for example adopts Silabs seriesSingle-chip microcomputer, includes TTL serial ports, digital quantity I/O, analog quantity A/D conversion etc., this channel radioNews module has following features: the voltage range (1.8V～6V) that (1) is wider; (2) extremely lowWork power consumption: only 60nA(wakeup time 120us of electric current when park mode), intercept electric current 7uA(can accept immediately data) (3) support external interrupt and RTC to wake up, and (4) support CSMA/CAMechanism, (5) support RSSI (received signal strength indicator)/LQI (link-quality instruction); (6)Adopt 470MHz communication frequency, have advantages of that anti-interference, diffraction, penetration capacity are strong; (7)Adopt SmartNode communications protocol, support point-to-point, point-to-multipoint, multistage relay communication; ?Hold 64 channels and frequency hopping mode of operation; (8) good the sensitivity :-112dbm that accepts; (9) prop upHold the behaviour such as serial communication, state acquisition, control output, switching value saltus step are caught, analog acquisitionDo.
Again alarm broadcast unit shown in Figure 3 comprise loudspeaker 141, sounding chamber 142,Be located at speech IC 143 and power amplifier 144 on circuit board, loudspeaker 141 is located atIn sounding chamber 142, described MCU control module 154 successively by speech IC 143 andPower amplifier 144 is connected with loudspeaker 141; Sound circuit 143 provides the evacuation of prerecordingSuggestion voice. Consider that the place such as family, dormitory sends suddenly the high-decibel sound easily to people at nightBody damages, and the initial sound pressure level of audio alert signal is not more than 45dB, and increases graduallyTo 75dB.
On MCU control module 154, be also provided with the interlock output interface being connected with linking fire device 81155 and the warning input interface 156 that is connected with fire trigger device 82;
Described fire alarm wireless telecommunications base is wireless and alarm host machine between by wireless transmission sideFormula realizes both-way communication.
For be connected fire trigger device between open circuit, do not affect when open circuit fault eachFrom service behaviour, warning input interface 156 can adopt passive contact type structure.
Warning input interface 156 as an example of Fig. 4 example comprises one group of level comparison circuit, this level ratioCompared with circuit comprise warning comparator 157, open circuit comparator 158, short circuit comparator 159 and onDraw resistance R U,
One input of warning comparator 157 is connected with the outer end of pull-up resistor RU, reports to the police relativelyAnother input of device 157 is the inner phase with pull-up resistor RU by the first divider resistance group 160Connect, the output of warning comparator 157 is connected with MCU control module 154;
One input of open circuit comparator 158 is connected with the outer end of pull-up resistor RU, and open circuit relativelyAnother input of device 158 is the inner phase with pull-up resistor RU by the second divider resistance group 161Connect, the output of open circuit comparator 158 is connected with MCU control module 154;
One input of short circuit comparator 159 is connected with the outer end of pull-up resistor RU, and short-circuit ratioAnother input of device 159 is the inner phase with pull-up resistor RU by the 3rd divider resistance group 162Connect, the output of short circuit comparator 159 is connected with MCU control module 154.
Wherein, in the first divider resistance group 160, comprise the first resistance R 1 and second electricity of series connectionHinder R2, in the second divider resistance group 161, comprise the 3rd resistance R 3 and the 4th resistance R 4 of series connection,In the 3rd divider resistance group 162, comprise the 5th resistance R 5 and the 6th resistance R 6 of series connection;
Fire alarm wireless telecommunications base of the present invention draws electricity in warning input interface 156The outer end of resistance RU is connected by wire L with fire trigger device 82. Except monitoring fire triggering signalAlso monitor short circuit and the open fault of connection line outward. Failure monitoring is the weight of fire alarmWant technical characterictic, object is to note abnormalities in time, the generation of stopping fire and failing to report phenomenon. Report to the police defeated3 component piezoresistances in incoming interface and 4 kinds of status determination circuits of comparator composition, divider resistanceEffect is to work as certain monitored state while occurring, guarantees wherein one group of comparator output high level, itsIts comparator output low level. The judgement of 4 kinds of states is achieved in that (1) under normal circumstances,Alarm actuating contact does not move, and pull-up resistor RU, series resistance RS and terminal resistance RZ composition touchPoint monitoring bleeder circuit, obtains component voltage Ui=U0, through 3 groups of comparators relatively after output low level,MCU control module 154 is judged as normal signal; (2) in the time that fire alarm occurs, alarm actuating contact action,Terminal resistance RZ=0, pull-up resistor RU and series resistance RS dividing potential drop, obtain Ui=U1, with first2 points of voltage levels of resistance R 1-the second resistance R compare, and output high level is to PIO1, and MCU is controlledUnit 154 processed is judged as fire alarm; (3) when fire alarm wireless telecommunications base and fire triggeringWhen device connects wire and departs from, series resistance RS=∞, obtains Ui=V, with the 3rd resistance R 3-theFour 4 points of resistance R voltage levels compare, and export high level to PIO2, MCU control module 154Be judged as open fault signal; (4) in the time connecting wire shorted to earth, Ui=0, with the 5th resistance6 points of voltage levels of R5-the 6th resistance R compare, and export high level to PIO3, MCU control module154 are judged as short trouble signal;
Also comprise the battery 16 for power supply is provided to fire alarm wireless telecommunications base, battery 16Be located in base housing 12;
Between fire alarm wireless telecommunications base and alarm host machine, realize two by wireless transmission methodTo communication.
Shown in Figure 5 again, wherein on circuit board 13, be also provided with voltage detecting circuit 17, electricityPressing testing circuit 17 is two impedance matching circuits 171,172, one of them impedance matching circuit172 are connected with battery 16, in another impedance matching circuit 171 and linking fire parts fromCharged pool be connected or with being connected from charged pool in fire trigger device; Voltage detecting circuit 17Output be connected with the mould/number conversion interface in MCU control module 154. MCU control module154 carry out analog-to-digital conversion by ADC1 and ADC2 by above-mentioned cell voltage, obtain corresponding electricityPress after digital quantity value, voltage signal sent to alarm host machine, by alarm host machine by it with defaultThe permission minimum voltage value of the different inputs of corresponding fire alarm wireless telecommunications base compares, and entersThe assessment judgement of row under-voltage condition. Meanwhile, alarm host machine is replied and is replied immediately, thereby completesThe communication of fire alarm wireless telecommunications base and alarm host machine. Just owing to existing like thisTiming contact, when alarming wireless communication base generation critical failure or while losing, wireless main website is justCan find in time accordingly the concurrent warning of being out of order. Because carrying out ADC conversion, MCU control module needsConsume more electric current, therefore the time interval can not be too short, setting 300 second change-over period is to fitClose. Single wireless module reports contact communication by 20ms consuming time, its emission current 64mA, connectsBe subject to electric current 20mA, if do not receive, main website replys, and wireless base can repeat its transmission 3 times. Its maximumThe electric current and the dormancy average quiescent current weighting summation that consume, obtaining average power consumption is 33uA.
Embodiment 1
Refer to again shown in Fig. 6, Fig. 7, fire alarm wireless telecommunications base of the present invention with carryThe free-standing fire detector 821 of power supply forms wireless type fire detector, the independence of specifically selectingFormula fire detector model is: FSK01ZZ-S, this detector, by national 3C forcible authentication, is withThere is 1 move report contact (passive warning output), standby current 15uA and exceed the battery of 5 yearsService life. Wireless telecommunications base adopt the cylindrical shape identical with this diameter detector, bothRealize the combination of upper and lower casing closing lid by snap device. Wireless telecommunications base inside comprises channel radioNews module, warning input interface, alarm broadcast unit, loudspeaker, sounding chamber, battery, batteryThe parts such as electric weight detecting unit, antenna, base housing. Wherein report to the police input interface by wire withThe report interface that moves of stand alone type detector is connected, the battery positive and negative terminal access base of free-standing detectorIn voltage detecting circuit, antenna is positioned at the outside of base housing, both are integrated; Antenna is logicalCrossing feeder line is connected with the wireless communication module of base inside.
Wireless communication module intercept electric current≤7uA, average quiescent current≤3uA, receiving sensitivity≤-112dbm, emission maximum electric current≤64mA, transmitting power can within the scope of 1dbm～17dbmAdjust.
Fire alarm wireless telecommunications base is work like this: wireless communication module is at ordinary times in dormancyState, wakes up 1 each second automatically, enters and intercepts the work period, carries out following task: task1: detect the fire trigger device connecting and whether send fire alarm (being contact action); Task2: detect the fire trigger device connecting and whether occur line short circuit, open fault; Task 3:Intercept main website and whether send linkage command.
If above-mentioned task 1 situation detected, module will send to main website with 2 seconds intervals immediately,Repeat 5 times, to guarantee that main website receives the fire alarm information reporting in 10 seconds; If detect above-mentionedTask 2 situations, module will send to main website with 5 seconds intervals immediately, repeats 10 times, to guaranteeThe fault message reporting is received by main website in 100 seconds; If above-mentioned task 3 situations detected, holdRow interlock output. If above 3 kinds of situations do not detected, module immediate recovery arrives resting state,Wait for the arrival of next listening periods. Under normal circumstances, intercepting the work period is 1ms, detectsListen electric current≤7uA. Because quiescent current is 1.4uA, therefore module rest period average quiescent current is≤3uA。
In the present embodiment, adopt the lithium battery of CR174503V2600mAh, this battery volume is little,Meet base space limited, with detector integrate external form require requirement attractive in appearance. Secondly, with wirelessModule low-power consumption characteristic coordinates to have met takes into account two-way realize communication and energy-conservation requirement. Wireless baseBattery life is greater than 5 years, is consistent with 5 years battery lifes of free-standing detector.
The concrete power supply power consumption of wireless base is calculated as follows:
Annual consumes power=consumption in operation × 24 per hour of wireless base hour × 365 days+annualExtra consume (D);
Consumption in operation per hour=static state consumes (A)+patrol and examine consumption (B)+reply consumption (C);
Wherein:
(1) static consume (A) calculates: be base static state average electric current 3uA;
(2) patrolling and examining consumption (B) calculates:
Within every 5 minutes, patrol and examine and report once, launch average current 64mA, duration 40ms(is mono-in transmitting at every turnInferior transmitting duration 20ms, by the poorest communication state, sending times is 2 times), repeat its transmission 3 timesNumber; Per hour patrolling and examining reports (60 minutes/5 minutes=12) 12 times;
Therefore, consumes power (B)=[64mA × (40ms/1000ms/3600s) that patrols and examines per hour× 3] × 12 times=25.6uA
(3) replying consumption (C) calculates:
Within every 5 minutes, reply once, reply duration 20ms, average current is 20mA, accepts number of timesBe 1 time, per hour replying 12 times;
Therefore: consumes power (C)=[20mA × (20ms/1000ms/3600s) that replys per hour× 3] × 12 times=4.0uA;
(4) annual extra consume (D) calculates:
Comprise the additional response consumption that annual twice manual inspection consumption and main station failure cause, amount toConsume: 7.81mAh;
To sum up, the consumption in operation per hour of wireless base=(A)+(B)+(C)=3.0uA ×25.6uA+4.0uA=32.6uA；
The annual wastage in bulk or weight electric weight of wireless base is: 32.6 × 24 hours × 365 days+7.81mAh=293.38mAh；
Within 5 years, wastage in bulk or weight electric weight calculates:
(1) effective operating voltage of wireless base designs is 3V-2.5V ± 5% interval.
(2) the annual average power consumption=annual wastage in bulk or weight of wireless base/365/24==293.38/365/24=33.49uA；
(3) look into the discharge characteristic curve of battery known, under discharge capacity of the cell 5mAh condition, electricityPress by 3V and be down to the about 2400mAh of spendable electric weight during 2.5V, suppose the year of battery naturallyLoss is 0.5%, obtains calculating as table 1:
Table 1
Learnt by upper table, accumulation consumes power when the 5th year finishes is 1467mAh, dump energyFor 2400-1467mAh=933mAh. In addition, dump energy also must be supported in 5 years extremelyOccur less 2 times and evacuate the electric quantity consumption that broadcast causes, be for 1 time evacuation drill, be for 1 time true fireAlert. Each evacuation broadcast is answered continuous operation 30 minutes. During evacuating broadcast: broadcast electric current=120mA;Duration=30 minute (0.5h), consumes power (F)=120mA × 0.5=60mAh;
In sum, within 5 years, consume total electric weight and be: 1467+60 × 2=1587mAh, dump energy is:2400-1587mAh=813mAh；
Reach a conclusion: 5 years accumulative total consumes power < 2400mAh of wireless base, and remaining battery electricityAmount > 293.38mAh, at least also has 1 year surplus, wireless base battery life > 5 years.
In the present embodiment, wireless telecommunications base is work like this. Wireless communication module at ordinary times inResting state, wakes up 1 each second automatically, enters and intercepts the work period, carries out following task:Task 1: detect the fire trigger device connecting and whether send fire alarm (being contact action);Task 2: detect the fire trigger device connecting and whether occur line short circuit, open fault; AppointBusiness 3: intercept main website and whether send linkage command.
If above-mentioned task 1 situation detected, module will send to main website with 2 seconds intervals immediately,Repeat 5 times, to guarantee to report to the police, the fire alarm information reporting is received in 10 seconds by main website; If detectedAbove-mentioned task 2 situations, module will send to warning main website with 5 seconds intervals immediately, repeats 10 times,Receive the fault message reporting to guarantee main website in 100 seconds; If above-mentioned task 3 situations detected,Carry out interlock output. If above 3 kinds of situations do not detected, module immediate recovery is to dormancy shapeState, waits for the arrival of next listening periods. Under normal circumstances, intercepting the work period is 1ms,Intercept electric current 7uA. Because quiescent current is 1.4uA, therefore module rest period average quiescent current is3uA。
Embodiment 2
Refer to shown in Fig. 8, Fig. 9, the difference of the present embodiment and embodiment 1 is only again:Fire trigger device substitutes self-powered independence by non-addressing type manual fire alarm call point 822Formula fire detector 821, fire alarm wireless telecommunications base of the present invention and non-addressing type be fire manuallyCalamity alarm button 822 forms wireless type manual fire alarm call point. Addressing type manual fire alarm is pressedButton generally adopts bus code mode to be connected with wired fire alarm control unit. Non-addressing type is fire manuallyCalamity alarm button is a dry contact, in the time of manual warning, and dry contact closure, this contact signal and upperState to move and report interface signal identical, passive mode access fire alarm wireless telecommunications base. Specifically selectManual fire alarm call point for by national 3C forcible authentication product, with 1 passive warningOutput contact. When specific works, by externally fed, in the present embodiment, by fire alarm channel radioNews base for supplying power. Wireless telecommunications base adopts the square measure-alike with this manual pull stationShape, both realize upper and lower casing closing lid combination by snap device. The inner group of wireless telecommunications baseBecome identical with embodiment 1, its warning input interface is by wire and manual fire alarm call point contactInterface is connected, and antenna is positioned at the outside of base housing, and both are integrated; Antenna passes through feeder lineBe connected with the wireless communication module of base inside. The operation principle of the present embodiment and embodiment 1 are completeIdentical, difference be warning input interface access be manual alarm signal.
All the other contents are all with identical described in embodiment 1.
Embodiment 3
Refer to shown in Figure 10, Figure 11, the difference of the present embodiment and embodiment 1 only exists againIn: adopting wireless telecommunications base of the present invention and linking fire device 81 is fire acousto-optic alarm811 form wireless type fire acousto-optic alarm. The fire acousto-optic alarm of specifically selecting is for passing through stateThe product of family's type inspection, with 1 Passive Shape Control input contact. Fire acousto-optic alarm insideFrom charged pool, need not wireless base for supplying power. Wireless telecommunications base adopts and this fire acousto-optic alarmMeasure-alike rectangular shape, both realize the combination of upper and lower casing closing lid by snap device. NothingThe inner composition of line communication base is identical with embodiment 1, and its interlock output interface is by wire and fireIn acoustooptic alarm, control inputs contact is connected, and antenna is positioned at the outside of base housing, Liang ZheheBe integrated; Antenna is connected with the wireless communication module of base inside by feeder line. The nothing of the present embodimentLine communication operation principle is identical with embodiment 1, at the listening periods of wireless module, and inspection automaticallySurvey wireless main website whether send wake frame and command message up, when its command message content is for starting interlockInterlock contact was opened immediately in output in 3 seconds, triggered fire acousto-optic alarm and sent the news of reporting to the policeBreath.
All the other contents are all with identical described in embodiment 1.
It should be noted that fire alarm wireless telecommunications base and fire in above-mentioned 3 embodimentThe dissimilar wireless transmission terminal type of trigger device or linking fire device composition needs pre-First be configured rear use by warning main website.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used forObject of the present invention is described, and not as limitation of the invention, as long as in essence of the present inventionIn scope, variation to the above embodiment, modification all will drop on claim of the present inventionIn scope.
Claims (13)
1. a fire alarm wireless telecommunications base, is characterized in that:
Comprise antenna and base housing, in described base housing, be provided with circuit board and alarm broadcast unit, instituteState circuit board and be provided with wireless communication module, described wireless communication module comprises that RF front-end transceiver, FLASH depositReservoir, RAM memory and MCU control module, one end of described RF front-end transceiver is connected with antenna, before RFEnd transceiver the other end be connected with MCU control module, described FLASH memory and RAM memory all withMCU control module is connected;
Described alarm broadcast unit comprises loudspeaker, sounding chamber, be located at speech IC on circuit board andPower amplifier, described loudspeaker is located in sounding chamber, and described MCU control module passes through speech IC successivelyAnd power amplifier is connected with loudspeaker;
Described MCU control module is also provided with the interlock output interface and and the fire that are connected with linking fire deviceThe warning input interface that trigger device is connected;
Also comprise the battery for power supply is provided to fire alarm wireless telecommunications base, described battery is located at baseIn housing;
Between described fire alarm wireless telecommunications base and alarm host machine, realize two-way by wireless transmission methodNews;
On described circuit board, be also provided with voltage detecting circuit, an input of described voltage detecting circuit with described inBattery be connected, another input with in linking fire parts from charged pool be connected or with fire trigger deviceIn from charged pool be connected;
The output of described voltage detecting circuit is connected with the mould/number conversion interface in MCU control module.
2. fire alarm wireless telecommunications base according to claim 1, is characterized in that: described warningInput interface comprises warning comparator, open circuit comparator, short circuit comparator and pull-up resistor,
One input of described warning comparator is connected with the outer end of pull-up resistor, described warning comparator anotherOne input is connected with the inner of pull-up resistor by the first divider resistance group, the output of described warning comparatorEnd is connected with MCU control module;
One input of described open circuit comparator is connected with the outer end of pull-up resistor, described open circuit comparator anotherOne input is connected with the inner of pull-up resistor by the second divider resistance group, the output of described open circuit comparatorEnd is connected with MCU control module;
One input of described short circuit comparator is connected with the outer end of pull-up resistor, described short circuit comparator anotherOne input is connected with the inner of pull-up resistor by the 3rd divider resistance group, the output of described short circuit comparatorEnd is connected with MCU control module.
3. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
Described warning input interface is passive contact type structure.
4. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
Described fire trigger device is free-standing smoke sensitive fire hazard detection alarm or non-addressing type manual fire alarmButton.
5. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
Described linking fire device is fire acousto-optic alarm.
6. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
Described fire alarm wireless telecommunications base adopts snap device and linking fire device or fire trigger deviceBe connected.
7. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
The wireless frequency of described wireless communication module adopts the one in following ISM band, described ISM band bagDraw together 434MHz, 470MHz, 860MHz, 900MHz and 2.4GHz.
8. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
The alarm signal volume that described MCU control module control alarm broadcast unit sends increases gradually from 45dBGreatly to 75dB.
9. fire alarm wireless telecommunications base according to claim 1, is characterized in that:
Described wireless communication module intercept electric current≤7uA, average quiescent current≤3uA, receiving sensitivity≤-112dbm, emission maximum electric current≤64mA, transmitting power is adjustable within the scope of 1dbm～17dbm.
10. fire alarm wireless telecommunications base according to claim 1, is characterized in that: described electricityPond adopts lithium battery, and its capacitance is greater than 2600mAh, the average work of described fire alarm wireless telecommunications baseElectric current is less than 33uA.
11. according to the fire alarm wireless telecommunications base described in any one in claim 1-10, it is characterized in that:
Described wireless communication module automatically woke up and entered every one second and intercepts the work period, intercepted the work periodFor 1ms, described in intercept the work period and comprise following task:
1) wireless communication module is monitored the fire trigger device connecting and whether is sent fire alarm, if fire touchesHair device part sends fire alarm, and wireless communication module sent fire alarm to alarm host machine in 3 seconds;
2) wireless communication module is monitored the fire trigger device connecting and whether is had short circuit or open fault, ifHave above-mentioned fault, wireless communication module sent fault-signal to alarm host machine in 100 seconds;
3) whether wireless communication module monitoring alarm host machine sends evacuation alarm signal, if receive evacuation alarmSignal, judgement:
If what a) be connected with described fire alarm wireless telecommunications base is fire trigger device, by alarmBroadcast unit sent chimes of doom in 3 seconds;
If what b) be connected with described fire alarm wireless telecommunications base is linking fire device, joined by fireThis sent chimes of doom moving device in 3 seconds.
12. fire alarm wireless telecommunications bases according to claim 11, is characterized in that:
1) described wireless communication module is monitored the fire trigger device connecting and whether is sent fire alarm, if fieryCalamity trigger device sends fire alarm, and wireless communication module repeats to send out to alarm host machine for 5 times with 2 seconds intervals immediatelySend fire alarm;
2) described wireless communication module is monitored the fire trigger device connecting and whether is had short circuit or open fault,If there is above-mentioned fault, wireless communication module repeats 10 times with 5 seconds intervals immediately and sends fault letter to alarm host machineNumber.
13. fire alarm wireless telecommunications bases according to claim 1, is characterized in that:
Described MCU control module was controlled described voltage detecting circuit every 300 seconds and gathers the electricity of its inputPressure value, and the voltage value signal collecting is sent to alarm host machine.
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| CN105022256A (en) * | 2015-07-03 | 2015-11-04 | 烟台北极星石英钟有限公司 | Design method of pointer type multifunction intelligent clock |
| CN107547305A (en) * | 2017-07-19 | 2018-01-05 | 上海因士环保科技有限公司 | A kind of network communicating system and method |
| CN108806157A (en) * | 2018-06-08 | 2018-11-13 | 苏州科百汇智能科技有限公司 | cell fire safety monitoring system |
| CN113132197A (en) * | 2020-01-15 | 2021-07-16 | 青鸟消防股份有限公司 | Alarm system, control method of alarm system and energy storage unit |
| CN112767632B (en) * | 2020-04-29 | 2022-10-11 | 天津市中力神盾电子科技有限公司 | Electric fire information optimization method and system |
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| KR100816984B1 (en) * | 2007-02-26 | 2008-03-26 | 손석환 | Switching fire watch control unit |
| CN101493981B (en) * | 2009-01-21 | 2010-09-01 | 福建火迪建筑消防工程技术服务有限公司 | Wireless independent fire alarm system |
| CN101635080B (en) * | 2009-08-21 | 2012-04-18 | 上海大亚科技有限公司 | Intelligent false alarm prevention infrared detector |
| CN202018714U (en) * | 2011-04-21 | 2011-10-26 | 傅哲龙 | Fire control monitoring and alarming system |
| CN102682562A (en) * | 2012-05-29 | 2012-09-19 | 公安部上海消防研究所 | Online fire smoke detecting device |
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Address after: 200032 No. two, 601 South Road, Xuhui District, Shanghai, Zhongshan Patentee after: SHANGHAI FIRE Research Institute OF MEM Address before: 200032 No. two, 601 South Road, Xuhui District, Shanghai, Zhongshan Patentee before: SHANGHAI FIRE Research Institute |