CN102622844B - Wireless energy-saving compound type fire detector - Google Patents
Wireless energy-saving compound type fire detector Download PDFInfo
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- CN102622844B CN102622844B CN201210079436.5A CN201210079436A CN102622844B CN 102622844 B CN102622844 B CN 102622844B CN 201210079436 A CN201210079436 A CN 201210079436A CN 102622844 B CN102622844 B CN 102622844B
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Abstract
The invention relates to a wireless energy-saving temperature and smoke sensing compound type fire detector for fire detection and alarming. The wireless energy-saving temperature and smoke sensing compound type fire detector comprises seven parts, i.e., a central control module, a timer module, a power module, a temperature sensing module, a smoke sensing module, a wireless transmission module and a sound and light alarming module. The wireless energy-saving temperature and smoke sensing compound type fire detector not only can be used as an independent type fire detector, but also can be used for building a fire detecting system by a wireless network. On the basis that the compound type fire detector effectively improves the fire alarming accuracy, an energy-saving algorithm and an energy-saving circuit design are adopted to prolong the service life of the detector. Under the state without fire alarming, the temperature sensing module and the smoke sensing module start to work at different time; when the sensing module in a working state detects a fire signal, the other sensing module is started instantaneously; and if the two sensing modules detect the fire signal simultaneously, the central control module controls the sound and light alarming module to emit an alarming signal. Under the networking condition, the fire alarming signal is sent out.
Description
Technical field
The present invention relates to wireless temperature-sensitive sense smoke composite type fire detector, particularly the wireless temperature-sensitive sense smoke composite type fire detector based on energy-saving design.
Background technology
Development along with microelectric technique, be limited to single-sensor fire detector and very easily report, fail to report phenomenon by mistake, composite type fire detector becomes the focus of research gradually, and has entered among people's life, such as JTF-GOM-GST601 combined type cigarette temperature detector.Traditional wiring type fire detector very easily, because line interruption or other reasons cause detector to use, has seriously limited the application places of detector, therefore, and the self-powered preferred option addressing this problem that become of radio communication and detector.Yet for some Code in Hazardous Special Locations, changing battery is more difficult thing, electric quantity consumption is complete means that detector cannot work.Therefore, need energy-saving scheme reasonable in design, to extend the serviceable life of detector.
Texas Instrument (Texas Instruments) is at it in photo-electric flue gas detector based on low-power consumption MSP430F2012 chip design, effective energy-saving scheme has been proposed: under normal mode of operation, the every 8s of detector detects infrared signal, has judged whether that flue gas exists.In non-sample phase, close operational amplifier and infrared light circuit, microprocessor chip is in holding state.After reporting to the police for the first time, sampling interval becomes 4s; The second warning post-sampling interval becomes 1s; If detector is reported to the police for continuous three times, send alerting signal.Power unit adopts 2 joint AAA powered battery, and by calculating, under normal mode of operation, its average consumed cur-rent is only 2.0 μ A/s.
The patent No. is that the United States Patent (USP) of US6084522A is the wireless smoke detector based on temperature sensitivity.Detector adopts photoelectric sensor to survey flue gas signal, and thermistor detecting temperature signal, reports to the police and status signal sends by wireless network.On power saving, device arranges timer, is divided into dormant stage and working stage.Dormant stage, detector is without any operation; Working stage, detector sensor is all opened, and status signal is sent.The time interval in two stages is 10s.In patent, author mentions, and this time interval can regulate as required.Yet based on energy-conservation consideration, this time interval should arrange higher value, and the larger time interval causes failing to report the generation of phenomenon most probably.
Above two kinds of energy-saving schemes design, be all the alarm time of sacrificing detector be prerequisite, cause most probably delayed alarm or fail to report phenomenon and cause fire rescue not in time, cause heavy losses.
Summary of the invention
The object of the invention is to provide a kind of energy-conservation, pin-point accuracy, the Wireless energy-saving composite type fire detector of response fast, and this detector can work alone, and also can join in wireless network, by wireless network transmissions fire signal.
To achieve these goals, main modular of the present invention forms as shown in Figure 1, comprises Central Control Module 1, timer module 2, power module 3, temperature-sensitive module 4, sense cigarette module 5, wireless transport module 6, sound and light alarm module 7.Wherein, sound and light alarm module comprises fire alarm and the warning of low electric weight.The mode that the present invention adopts temperature-sensitive, sense cigarette to combine improves warning accuracy.Under alarm free state, by Central Control Module 1, to control temperature-sensitive module 4 and feel cigarette module 5 and open in turn work, timer module 2 is responsible for clocking capability.When the detector module (4 or 5) in work detects fire signal, Central Control Module 1 is opened another detecting module (front detecting module is not closed), if two detecting modules send alerting signal simultaneously, Central Control Module 1 is controlled sound and light alarm module 7 and is sent sound and light alarm signal, if detector is connected on wireless network, by wireless transport module 6, alerting signal is sent.Detection alarm idiographic flow of the present invention as shown in Figure 2.
1) each functions of modules of initialization, whether test components and parts there is fault;
2) open wireless transport module 6, scanning channel, searches whether there is the wireless network that can add: after the network that can add being detected, to main frame, send request signal.Add Receiving Host command adapted thereto after network, as address assignment, coordinate such as determine at the information.After communication, close wireless transport module 6, wait for that next communication cycle communicates; If without available network, detector enters independent working mode, closes radio receiving transmitting module;
3) open temperature-sensitive module 4, guarantee to feel cigarette module 5 in closed condition: if temperature-sensitive module 4 does not detect fire signal within the working time simultaneously, in timer module 2, reach after predetermined break period, by Central Control Module 1, control and close temperature-sensitive module 4, open sense cigarette module 5;
4), if temperature-sensitive module 4 is sent alerting signal, open immediately sense cigarette module 5; When sense cigarette module 5 detects fire signal, and temperature-sensitive module 4 sent alerting signal, after Central Control Module 1 analysis confirmation, opens sound and light alarm module 7 and sends sound and light alarm signal.If detector joins in wireless network, by wireless transport module 6, warning message is sent;
5) if sense cigarette module 5 does not detect fire signal within the working time, and the heat alarm of temperature-sensitive module 4 now is not removed, and feels cigarette module 5 continuous firings, until smoke alarm signal is removed or detected to heat alarm;
6) when sense cigarette module 5 works independently, its detection alarm flow process and temperature-sensitive module 4 alarm flow that works independently is identical, repeat 3)-5) step, just by 3)-5) temperature-sensitive module 4 in step changes sense cigarette module 5 into, sense cigarette module 5 changes temperature-sensitive module 4 into.
Accompanying drawing explanation
Fig. 1 is each module composition frame chart of the present invention;
Fig. 2 is detection alarm process flow diagram of the present invention; After in figure, dotted arrow represents that timer interrupts, the inside and outside module of dotted line frame internal bracket is moved in turn, carries out the module outside bracket one time, becomes the module of carrying out in bracket, in turn circulation during next recycle
Fig. 3 is that components and parts of the present invention form schematic diagram;
Embodiment
Below in conjunction with accompanying drawing 3, by example, the present invention is further illustrated.
Embodiment 1:
The present invention is taking into full account design circuit on energy-conservation basis, and components and parts form schematic diagram and show as Fig. 3.Comprise centralized control unit A, power supply unit B, temperature-sensitive unit C, sense cigarette cells D, wireless transmission unit E and alarm unit F.Each unit concrete function and energy-saving scheme are as follows:
1) centralized control unit A
Centralized control unit A is equivalent to the Central Control Module 1 of Fig. 1 and the combination of timer module 2, adopts the low-power consumption MSP430F2112 of Texas Instrument (TI) chip, this built-in chip type timer and AD translation function.MSP430F2112 chip has taken into full account energy-saving design, and 5 kinds of low power mode of operation are provided, and standby mode power consumption is only 0.7 μ A, from standby mode, to waking up, only needs 1 μ s.Centralized control unit A only when carrying out data processing just in state of activation, At All Other Times all in standby mode.Centralized control unit A controls temperature-sensitive unit C and sense cigarette cells D is opened in turn, and the Set For Current time interval of the present invention is 10s, and this time interval can regulate as required; Centralized control unit A is responsible for the image data of temperature-sensitive unit C and sense cigarette cells D to analyze, and has judged whether that fire occurs; Centralized control unit A is responsible for arranging wireless transmission unit E, comprises transformat and transfer rate etc.; Centralized control unit A is responsible for driving alarm unit F.
2) power supply unit B
Power supply unit B is equivalent to the power module 3 of Fig. 1, comprises 3.6V lithium battery, TI bq27200 electric weight detection chip and LED light.Bq27200 detects battery electric quantity when too low, and to centralized control unit, A sends alerting signal, centralized control unit A driving LED pilot lamp flashing, and alert is changed battery in time.This place's LED light should be distinguished with fire alarm pilot lamp, and the present invention adopts green LED lamp.If add wireless network, low electric weight alerting signal is sent.
3) temperature-sensitive unit C
Temperature-sensitive unit C is equivalent to the temperature-sensitive module 4 of Fig. 1, adopts TI TMP102 low-power chip, and chip itself is temperature sensor, and temperature-measuring range is-40-+125 ℃, and within the scope of-25-+85 ℃, its temperature measurement accuracy can reach 0.5 ℃.TMP102 built-in chip type AD translation function, image data through after AD conversion by universal serial bus directly and microprocessor communicate, reduced the load of processor.TMP102 chip provides four kinds of acquisition rate: 8Hz, 4Hz, 1Hz and 0.25Hz, and the present invention adopts 1Hz acquisition rate under without fire alarm state.If detection data exceeds alarm threshold value, change acquisition rate into 8Hz, collection result is averaged, if reach alarm threshold value, heat detector sends alerting signal.TMP102 die size is only: 1.7 * 1.7mm, for the temperature sensing sensors such as thermistor, circuit will be optimized greatly.User also can install a plurality of TMP102 and carry out temperature survey on detector, to improve measuring accuracy and warning accuracy.
4) sense cigarette cells D
Sense cigarette cells D is equivalent to the sense cigarette module 5 of Fig. 1, adopts astigmatic formula photoelectric smoke principle.Comprise collection tabacco barn, infrarede emitting diode, infrared remote receiver and TLV2780 operational amplifier.The present invention, for reducing circuit complexity, adopts the AD translation function of MSP430F2112 built-in chip type to process the signal of sense cigarette cells D collection.Set For Current is for processing a secondary data every 1s sense cigarette cells D, gather respectively infrarede emitting diode close with opening under flue gas data, result is compared.Data when gathering infrarede emitting diode and closing the data that gather when infrarede emitting diode is opened are carried out the impact that environment can be effectively eliminated in difference processing with it; When having flue gas to exist, infrared remote receiver can receive stronger light signal under infrarede emitting diode opening, cause the difference of twice image data excessive and (measure and adopt astigmatic formula photoelectric smoke principle: infrared remote receiver and infrarede emitting diode are not point-blank, even if light emitting diode is opened, receiver does not receive infrared signal yet; And when having flue gas to exist, due to the scattering process of flue gas particle, receiver will receive infrared signal.And gather infrarede emitting diode, close the infrared signal of situation and do difference, mainly for eliminating the impact of surround lighting.), when this difference surpasses alarm threshold value, think that fire occurs.Detailed process is: in the situation that infrarede emitting diode is closed, open infrared remote receiver and TLV2780 amplifier, gather current infrared signal and carry out AD conversion; After converting, open infrarede emitting diode, gather current infrared signal and carry out AD conversion; After conversion, close sense cigarette cells D, centralized control unit A compares the data of twice collection.If result surpasses alarm threshold value, repeat immediately aforesaid operations 3 times (closing, open infrarede emitting diode (two actions) is single job), result is averaged, if reach alarm threshold value, feel cigarette cells D and send alerting signal.
5) wireless transmission unit E
Wireless transmission unit E is equivalent to the wireless transport module 6 of Fig. 1, comprises TI CC2520 chip and 2.4GHz antenna.Can add low-power consumption Zigbee wireless network.After the present invention powers on, scanning channel, the wireless network that search can add.If the network that can not add, closes the 1 hour scanning channel in wireless transmission unit E ，Bing interval.If add wireless network, with main frame exchange message, as address information, coordinate information Deng，Bing interval 20s send detector's status to main frame, guarantee that detector still in network, after communication, cuts out wireless transmission unit E.When detector detects fire signal, if do not add before network, scan available channels again, sends alerting signal; If added wireless network, open wireless transmission unit E immediately, sends alerting signal.When host acknowledgement alarm is wrong report phenomenon, can send information, the alarm condition of closure detector.
6) alarm unit F
Alarm unit F is equivalent to the sound and light alarm module 7 of Fig. 1, comprises hummer and red light emitting diodes.Alarm unit F always in closed condition, when centralized control unit A confirms to have fire to occur, drives alarm unit F to send sound and light alarm signal under alarm free state; When centralized control unit A confirms that the false positive signal of main frame transmission is removed or received in fire alarm, close alarm unit F.
The parameters such as above interval time of the present invention and frequency acquisition can require to regulate according to actual scene.According to example 1 energy-saving design, the power consumption of the present invention's main components under alarm free state is as shown in table 1, table 2.Known by calculating, the average power consumption of the present invention under alarm free state is only 3.5 μ A/s, and alarm time is only 4s.
Each element of table 1 temperature-sensitive module 1s internal power budget table
Each element of table 2 sense cigarette module 1s internal power budget table
Claims (7)
1. a Wireless energy-saving composite type fire detector, comprises Central Control Module, timer module, power module, temperature-sensitive module, sense cigarette module, wireless transport module and sound and light alarm module; Each module of power module and other is connected, and is responsible for the electric power supply of whole circuit; Timer module is connected with Central Control Module, centered by control module interruption timing is provided; Each module of Central Control Module and other is connected, be responsible for maintenance and the control work of whole circuit, the set of time of Central Control Module control timer module, controls temperature-sensitive module and data analysis and the duty of feeling cigarette module, controls data setting and the duty of wireless transport module; Control the duty of sound and light alarm module; Temperature-sensitive module is connected with Central Control Module, is responsible for scene temperature surveying work, and measurement result is sent to Central Control Module; Sense cigarette module is connected with Central Control Module, is responsible for on-the-spot flue gas concentration measuring work, and measurement result is sent to Central Control Module; Wireless transport module is connected with Central Control Module, is responsible for sending fire alarm signal and accepting host computer control signal; Sound and light alarm module is connected with Central Control Module, the onsite alarming work while being responsible for fire generation;
Under alarm free state, temperature-sensitive module and the timesharing unlatching work under the regulation and control of Central Control Module of sense cigarette module, in temperature-sensitive module and sense cigarette module, open the module of work as the detecting module of work, do not open the module of work as the detecting module of dormant state, when the data that detect of detecting module of work surpass after the alarm threshold value arranging, Central Control Module is opened the detecting module of dormant state immediately, if the data that two kinds of detecting modules detect all surpass after alarm threshold value separately, Central Control Module confirms that fire occurs, drive sound and light alarm module to send on-the-spot sound and light alarm, in the situation that being connected to wireless network, by wireless transport module, alerting signal is sent, it is characterized in that,
Adopt temperature sensing to survey with flue gas the mode detection of fires that combines, guaranteeing to adopt Energy Saving Algorithm on warning accuracy, the basis of response time: under alarm free state, temperature-sensitive module and sense cigarette module timesharing unlatching work; When the detecting module of work detects fire signal, open immediately another detecting module in temperature-sensitive module and sense cigarette module, if two kinds of detecting modules detect fire signal simultaneously, detector sends alerting signal;
Adopt Energy Saving Algorithm to control temperature-sensitive module: under without fire alarm state, temperature-sensitive module acquisition rate is 1Hz; When temperature-sensitive module detects fire signal, acquisition rate changes 8Hz into; If the mean value of multi collect data surpasses alarm threshold value, temperature-sensitive module is sent heat alarm;
Adopt astigmatic formula photoelectric smoke principle design sense cigarette module: under without fire alarm state, sense cigarette module acquisition rate is 1Hz; When sense cigarette module detects fire signal, acquisition rate changes 3Hz into; If the mean value of multi collect data surpasses alarm threshold value, sense cigarette module is sent smoke alarm signal.
2. by Wireless energy-saving composite type fire detector claimed in claim 1, it is characterized in that, the built-in sound and light alarm module of this Wireless energy-saving composite type fire detector detector and wireless transport module, sound and light alarm module provides on-the-spot sound and light alarm; Under networking condition, by wireless transport module, send fire signal, otherwise close wireless transport module; This Wireless energy-saving composite type fire detector is used as free-standing fire detector, or for building wireless fire disaster detection network.
3. by Wireless energy-saving composite type fire detector claimed in claim 1, it is characterized in that, each module adopts low-power consumption components and parts design circuit.
4. by Wireless energy-saving composite type fire detector claimed in claim 1, it is characterized in that, adopt low-power consumption microprocessor chip, its wakeup time is only 1 μ s, microprocessor only when deal with data in state of activation, all the other times are in standby mode.
5. by Wireless energy-saving composite type fire detector claimed in claim 1, it is characterized in that, adopt low-power consumption temperature-sensitive chip detecting temperature, this built-in chip type AD conversion and serial communication function.
6. by Wireless energy-saving composite type fire detector claimed in claim 1, it is characterized in that, adopt lithium battery power supply, adopt electric weight detection chip to monitor battery electric quantity, when battery electric quantity is too low, by LED flash, send low electric weight alerting signal, or send low electric weight alerting signal by wireless network.
7. by Wireless energy-saving composite type fire detector claimed in claim 1, it is characterized in that, adopt radio transmitting device, when joining wireless network, without fire alarm state Xia， interval 20s, sending a detectable signal; If detect fire signal, send immediately fire alarm, during no signal transmission, radio transmitting device is in closed condition.
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| CN201210079436.5A CN102622844B (en) | 2012-03-23 | 2012-03-23 | Wireless energy-saving compound type fire detector |
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| CN201210079436.5A CN102622844B (en) | 2012-03-23 | 2012-03-23 | Wireless energy-saving compound type fire detector |
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| CN102622844A CN102622844A (en) | 2012-08-01 |
| CN102622844B true CN102622844B (en) | 2014-01-15 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140159856A1 (en) * | 2012-12-12 | 2014-06-12 | Thorsten Meyer | Sensor hierarchy |
| CN103745553A (en) * | 2013-12-25 | 2014-04-23 | 广西科技大学 | Fire hazard automatic alarm apparatus |
| CN104269011A (en) * | 2014-09-26 | 2015-01-07 | 珠海保税区光联通讯技术有限公司 | Sound wave and temperature sensor and working method thereof |
| ES2938349T3 (en) | 2015-07-13 | 2023-04-10 | Carrier Corp | security automation system |
| CN106128006A (en) * | 2016-08-22 | 2016-11-16 | 杭州北海信息系统有限公司 | Wireless fire disaster Alarm Communications System |
| CN106297155A (en) * | 2016-10-24 | 2017-01-04 | 盐城冠星科技有限公司 | A kind of wireless intelligence type smoke alarm |
| CN106448023B (en) * | 2016-12-01 | 2021-06-08 | 上海腾盛智能安全科技股份有限公司 | Fire smoke alarm with storage function |
| CN106887106A (en) * | 2017-04-21 | 2017-06-23 | 上海电机学院 | A kind of SCM Based wireless fire disaster alarm system |
| CN107290070A (en) * | 2017-08-04 | 2017-10-24 | 河北为信电子科技股份有限公司 | A kind of efficient wireless temperature measurement method of intelligent power saving formula and its device |
| CN109523738B (en) * | 2018-12-03 | 2021-12-17 | 武汉拓宝科技股份有限公司 | Dynamic smoke detection algorithm based on time wheel sheet |
| CN111354153A (en) * | 2020-03-12 | 2020-06-30 | 安徽启新明智科技有限公司 | Wireless feedback method and device for composite alarm and controller |
| CN111583574B (en) * | 2020-04-24 | 2021-10-15 | 广州通达汽车电气股份有限公司 | Vehicle-mounted fire protection system, method and device and storage medium |
| WO2024066000A1 (en) * | 2022-09-29 | 2024-04-04 | 中车长春轨道客车股份有限公司 | Fire suppression system for improving reliability of lithium ion storage batteries |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5608383A (en) * | 1995-03-29 | 1997-03-04 | Neil; Clifford R. | Automatic temperature alarm system |
| US6084522A (en) * | 1999-03-29 | 2000-07-04 | Pittway Corp. | Temperature sensing wireless smoke detector |
| JP3972597B2 (en) * | 2001-04-24 | 2007-09-05 | 松下電工株式会社 | Combined fire detector |
| CN202134071U (en) * | 2011-07-28 | 2012-02-01 | 程建勋 | Automobile, shop and household alarm with no false alarming and free of installation |
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