CN105513255A - Internet of things-based fire monitoring apparatus - Google Patents
Internet of things-based fire monitoring apparatus Download PDFInfo
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- CN105513255A CN105513255A CN201510853745.7A CN201510853745A CN105513255A CN 105513255 A CN105513255 A CN 105513255A CN 201510853745 A CN201510853745 A CN 201510853745A CN 105513255 A CN105513255 A CN 105513255A
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- fire
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- fire monitoring
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
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- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses an Internet of things-based fire monitoring apparatus and belongs to the fire alarm device technical field. The fire monitoring apparatus includes a fire monitoring terminal, a coordinator, routers and ZigBee wireless network nodes; each ZigBee wireless network node is arranged in a region which requires to be monitored and includes a first ZigBee module, a fire monitoring module and a fire alarm module, wherein the fire monitoring module comprises a sensor unit, an A/D conversion unit and a signal amplifying unit which are connected with one another sequentially, wherein the signal amplifying unit comprises a triode, a constant-current source circuit and a voltage current conversion circuit; and the fire monitoring terminal comprises a second ZigBee module, a central processing module and a fire protection linkage module. According to the Internet of things-based fire monitoring apparatus of the invention, a ZigBee wireless communication network is utilized to monitor the region which requires to be monitored in real-time around the clock. The Internet of things-based fire monitoring apparatus has high applicability.
Description
Technical field
The present invention relates to a kind of fire monitoring equipment based on Internet of Things, belong to fire alarm installation technical field.
Background technology
Fire brings about great losses not only to the economic construction of the mankind, destroys ecologic environment, but also can threaten human life's property safety.Mainly adopt artificial inspection mode to carry out information acquisition to the monitoring of fire at first, it is low that the method has efficiency, poor reliability, response speed not in time, and the shortcoming such as cost of labor is high.Along with the progress of society and the development of infotech, various fire monitoring automatic alarm arises at the historic moment.
Application number is 201310563140.5, the applying date is that the application for a patent for invention on November 14th, 2013 discloses a kind of fire alarm system based on Internet of Things, this invention comprises sensor-based system, GPS locator, multiple fire monitoring device, data platform acquisition server and Surveillance center, the output terminal of described sensor-based system is connected with the input end of described fire monitoring device, described fire monitoring device is connected by internet with described data platform acquisition server, described data platform acquisition server is connected with described Surveillance center, on multiple described fire monitoring device, correspondence is provided with electronic tag, the output terminal of described GPS locator is connected with the input end of described fire monitoring device, described sensor-based system comprises smoke transducer, harmful gas sensor and temperature sensor, this invention is by carrying out the mode of Real-Time Monitoring in inflammable and explosive region, when there is the condition of a disaster, the situation of the condition of a disaster can be recognized the very first time, fire fighter is facilitated reasonably to arrange and dispatch.
Application number is 201510104862.3, the applying date is that the application for a patent for invention on March 11st, 2015 discloses a kind of intelligent fire monitoring alarm system based on Internet of Things, comprise main control unit, host computer, camera, fire sensor, hummer module and GSM message module, camera is connected with main control unit, fire sensor is connected with main control unit by detecting unit, main control unit is connected by RS232 bus with host computer, main control unit also with time quantum, alarm unit is connected with display unit, alarm unit and hummer module and GSM message model calling.This invention is by the fire secret of fire sensor and camera Test Field, and by gsm communication technology, the condition of a fire information of Site Detection is wirelessly transmitted to user mobile phone in the mode of picture and word, or upload to remote monitoring computing machine, achieve on-the-spot fire coherent detection information and internet interconnection.It is reasonable in design, structure is simple, cost is lower, dependable performance, easy and simple to handle, intelligence degree is high.
Existing its intelligence degree of Internet of Things fire monitoring alarm equipment is not high, monitoring precision is low, it is high to misrepresent deliberately rate of false alarm, can not be well people's service.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of based on Internet of Things fire monitoring equipment, use ZigBee wireless communication networks, implement monitoring in real time in 24 hours in the region of monitoring to needing, applicability is strong.
The present invention adopts following technical scheme for solving its technical matters:
A kind of fire monitoring equipment based on Internet of Things, comprise fire hazard monitoring terminal, telegon, router and ZigBee wireless network node, each router is connected with n ZigBee wireless network node, m router is connected with fire hazard monitoring terminal by telegon, n and m be greater than 1 natural number; Each ZigBee wireless network node is arranged in the region of needs monitoring, and included the first ZigBee module, fire monitoring module and fire alarm module, described fire monitoring module is connected with the first ZigBee module respectively with fire alarm module; Described fire monitoring module comprises the sensor unit, A/D converting unit and the signal amplification unit that are linked in sequence; Described fire hazard monitoring terminal includes the second ZigBee module, central processing module and fire-fighting link module, and described central processing module is connected with the second ZigBee module respectively with fire-fighting link module; The output terminal of described ZigBee module is connected with antenna by antenna transceiver, and described antenna and described router carry out wireless telecommunications;
Described signal amplification unit: comprise triode, constant-current source circuit and voltage-current converter circuit, wherein, the output terminal of described constant-current source circuit, the input end of voltage-current converter circuit are all connected with the collector of triode, the base stage of triode is connected with the output terminal of A/D converting unit respectively with emitter, and as the in-phase input end of signal amplification unit and inverting input, the output terminal of voltage-current converter circuit is connected with the first ZigBee module.
As a preferred technical solution of the present invention: described ZigBee module is CC2530 module.
As a preferred technical solution of the present invention: described telegon adopts the CC2530 chip of TI company.
As a preferred technical solution of the present invention: described sensor unit is smoke transducer.
As a preferred technical solution of the present invention: described fire alarm module is fire alarm bell.
Of the present invention a kind of based on Internet of Things fire monitoring equipment, adopt above technical scheme compared with prior art, there is following technique effect:
(1) the present invention uses ZigBee wireless communication networks, and implement monitoring in real time in 24 hours in the region of monitoring to needing, applicability is strong.Native system is low in energy consumption, easy to use, extendability is high, is conducive to informationization, the Intelligent Process of accelerating fire hazard monitoring system.
(2) fire monitoring equipment of the present invention, monitoring precision is high, farthest reduces the generation of fire.
(3) fire alarm module and fire-fighting link module is provided with in the present invention, once fire occurs, fire alarm module can notify that the personnel of scene of fire escape in time, and fire-fighting link module also can notify that fire fighter comes fire fighting and rescue, is reduced to minimum level by loss in time.
(4) signal amplification unit of the present invention, can overcome classical signal amplifying circuit causes distorted signals problem because of input and output impedance.
(5) signal amplification unit constant-current source circuit of the present invention replaces pull-up resistor to carry out voltage amplification, has both solved problem of dtmf distortion DTMF and in turn simplify circuit, improve reliability stability.
Accompanying drawing explanation
Fig. 1 is the fire monitoring equipment schematic based on Internet of Things of the present invention.
Fig. 2 is the schematic diagram of signal amplification unit of the present invention.
Embodiment
Below the invention is described in further details.
A kind of fire monitoring equipment based on Internet of Things as shown in Figure 1, comprise fire hazard monitoring terminal, telegon, router and ZigBee wireless network node, each router is connected with n ZigBee wireless network node, m router is connected with fire hazard monitoring terminal by telegon, n and m be greater than 1 natural number; Each ZigBee wireless network node is arranged in the region of needs monitoring, and included the first ZigBee module, fire monitoring module and fire alarm module, described fire monitoring module is connected with the first ZigBee module respectively with fire alarm module; Described fire monitoring module comprises the sensor unit, A/D converting unit and the signal amplification unit that are linked in sequence; Described fire hazard monitoring terminal includes the second ZigBee module, central processing module and fire-fighting link module, and described central processing module is connected with the second ZigBee module respectively with fire-fighting link module; The output terminal of described ZigBee module is connected with antenna by antenna transceiver, and described antenna and described router carry out wireless telecommunications;
Described signal amplification unit is as shown in Figure 2: comprise triode, constant-current source circuit and voltage-current converter circuit, wherein, the output terminal of described constant-current source circuit, the input end of voltage-current converter circuit are all connected with the collector of triode, the base stage of triode is connected with the output terminal of A/D converting unit respectively with emitter, and as the in-phase input end of signal amplification unit and inverting input, the output terminal of voltage-current converter circuit is connected with the first ZigBee module.
As a preferred technical solution of the present invention: described ZigBee module is CC2530 module.
As a preferred technical solution of the present invention: described telegon adopts the CC2530 chip of TI company.
As a preferred technical solution of the present invention: described sensor unit is smoke transducer.
As a preferred technical solution of the present invention: described fire alarm module is fire alarm bell.
The present invention uses ZigBee wireless communication networks, and implement monitoring in real time in 24 hours in the region of monitoring to needing, applicability is strong.Native system is low in energy consumption, easy to use, extendability is high, is conducive to informationization, the Intelligent Process of accelerating fire hazard monitoring system.ZigBee is a kind of highly reliable wireless data sending network, is similar to CDMA and GSM network.ZigBee digital transmission module is similar to mobile network base station.Communication distance from the 75m of standard to hundreds of rice, several kilometers, and support infinite expanding.ZigBee be one by a wireless data sending network platform that can how to form to 65000 wireless data transmission modules, in whole network range, can intercom mutually between each ZigBee-network digital transmission module, the distance between each network node can from the 75m infinite expanding of standard.
Zigbee is a kind of brand-new, is absorbed in the short-range wireless networks communication technology of low-power consumption, low cost, low complex degree, low rate.Also be a large focus of Embedded Application.Low-power consumption is under low power consumption standby mode, and 2 joints No. 5 dry cells can support 1 node work 6--24 month, even longer.This is the outstanding advantage of Zigbee.Compare, can work several weeks, WiFi of bluetooth can work a few hours.The response speed of short time-delay Zigbee is very fast, generally proceeds to duty from sleep and only needs 15ms, and node connection enters network only needs 30ms, saves electric energy further.Compare, bluetooth needs 3--10s, WiFi to need 3s.High power capacity Zigbee can adopt starlike, sheet and mesh network topology, manages some child nodes, maximum host node ALARA Principle 254 child nodes by a host node; Host node also by last layer network node control, can form at most the large net of 65000 nodes simultaneously.
Signal amplification unit of the present invention, can overcome classical signal amplifying circuit causes distorted signals problem because of input and output impedance.The amplifying circuit of traditional structure, needs electric current to produce larger change, voltage just can be caused to produce larger change, realize enlarging function; If curent change is less, then enlarging function is not obvious does not even amplify, and can have influence on input signal due to the change of output current, causes the degree of distortion of traditional amplifying circuit higher.There is impedance between BE knot due to triode, control transistor collector curent change can affect the voltage drop between BE knot, and the raw information form of input signal is changed, and causes distortion to be difficult to eliminate.
Present invention employs constant-current source circuit replaces pull-up resistor to carry out voltage amplification, and the motional impedance of constant current source is almost infinitely great, and the input impedance substantially without the need to the voltage-current converter circuit of electric current driving is also almost infinitely great.According to the formula of U=IR, curent change small a bit, all can cause voltage that a significantly change occurs, thus realize the amplification of voltage, amplification effect is obvious.Simultaneously, because the curent change of constant current source own levels off to zero, triode T base is penetrated the required curent change that controls and is leveled off to zero, dynamic electric voltage change between the BE knot of triode levels off to zero, isolate the impact of amplifying circuit output current on input signal, thus make the distortion of amplifying circuit level off to zero.Therefore signal amplification unit constant-current source circuit replaces pull-up resistor to carry out voltage amplification, has both solved problem of dtmf distortion DTMF and in turn simplify circuit, and improve reliability stability.
Sensor unit of the present invention is smoke transducer.Smoke transducer realizes fire disasters protection by the concentration of monitoring smog, smoke alarm inside adopts ion type smog sensing, ion type smog sensor is a kind of advanced technology, the reliable sensor of working stability, be widely used in various fire protection alarm system, performance is much better than the fire-alarm of gas sensing resistance class.It has radioactive source americium 241 inside inside and outside ionization chamber, the positive and negative ion that ionization produces, and moves under the effect of electric field respectively towards positive and negative electrode.Under normal conditions, the electric current of inside and outside ionization chamber, voltage are all stable.Once there be smog to flee in disorder outer ionization chamber.Disturb the proper motion of charged particle, electric current, voltage will change to some extent, destroys the balance between inside and outside ionization chamber, so wireless launcher sends wireless alarm signal, the Receiving Host in a notice distant place, passes warning message.Smoke transducer is widely used in the various fields such as city security protection, community, factory, company, school, family, villa, warehouse, resource, oil, chemical industry, gas transmission and distribution.
Smoke transducer mainly contains ion type smog sensor and gas-sensitive smog sensor.Gas sensor is a kind of sensor detecting specific gas.It converts electric signal to by gaseous species and with concentration dependent information, according to the power of these electric signal just can obtain with gas to be measured in the environment there is the relevant information of situation, thus can carry out detecting, monitor, report to the police; Can also be formed by interface circuit and computing machine and automatically detect, control and warning system.It mainly comprises semiconductor gas sensor, catalytic combustion type gas sensor and Electro-chemical Gas Sensor etc., and wherein maximum are semiconductor gas sensors.Tobacco pipe with ion generator fog siren wants sensitiveer to the induction of small smoke particle, to various cigarette energy equalizer response; And the induction of forward-type photoelectric mist alarm to slightly large smoke particle is sensitiveer, a little to grey cigarette, black smoke difference in response.When there is raging flames, in air, the fine particle of smog is more, and when smouldering, smoke particle slightly large in air can be more.If after fire occurs, create the fine particle of a large amount of smog, Tobacco pipe with ion generator fog siren first can be reported to the police than photoelectric mist alarm.These two kinds of smoke alarm time intervals are little, but spreading of this kind of fire is exceedingly fast, and it is better that Tobacco pipe with ion generator fog siren is installed in the suggestion of this type of place.After another kind of fire of smouldering occurs, create a large amount of slightly large smoke particles, photoelectric mist alarm first can be reported to the police than Tobacco pipe with ion generator fog siren, and photoelectric mist alarm is installed in the suggestion of this kind of place.
Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.
Claims (6)
1. the fire monitoring equipment based on Internet of Things, comprise fire hazard monitoring terminal, telegon, a m router, each router is connected with n ZigBee wireless network node, and m router is connected with fire hazard monitoring terminal by telegon, n and m be greater than 1 natural number; Each ZigBee wireless network node is arranged in the region of needs monitoring, and included the first ZigBee module, fire monitoring module and fire alarm module, described fire monitoring module is connected with the first ZigBee module respectively with fire alarm module; Described fire monitoring module comprises the sensor unit, A/D converting unit and the signal amplification unit that are linked in sequence; Described fire hazard monitoring terminal includes the second ZigBee module, central processing module and fire-fighting link module, and described central processing module is connected with the second ZigBee module respectively with fire-fighting link module; The output terminal of described second ZigBee module is connected with antenna by antenna transceiver, and described antenna and each router carry out wireless telecommunications;
It is characterized in that, described signal amplification unit comprises triode, constant-current source circuit and voltage-current converter circuit, wherein, the output terminal of described constant-current source circuit, the input end of voltage-current converter circuit are all connected with the collector of triode, the base stage of triode is connected with the output terminal of A/D converting unit respectively with emitter, and respectively as the in-phase input end of signal amplification unit and inverting input, the output terminal of voltage-current converter circuit is connected with the first ZigBee module.
2. a kind of fire monitoring equipment based on Internet of Things according to claim 1, it is characterized in that, described first ZigBee module is CC2530 module.
3. a kind of fire monitoring equipment based on Internet of Things according to claim 1, is characterized in that, described telegon adopts the CC2530 chip of TI company.
4. a kind of fire monitoring equipment based on Internet of Things according to claim 1, it is characterized in that, described sensor unit is smoke transducer.
5. a kind of fire monitoring equipment based on Internet of Things according to claim 1, it is characterized in that, described fire alarm module is fire alarm bell.
6. a kind of fire monitoring equipment based on Internet of Things according to claim 1, it is characterized in that, described fire-fighting link module comprises air pump push-button unit and water pump push-button unit.
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| CN201510853745.7A CN105513255A (en) | 2015-11-30 | 2015-11-30 | Internet of things-based fire monitoring apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105844834A (en) * | 2016-05-20 | 2016-08-10 | 山东华硕能源科技有限公司 | An early-warning inflaming retarding explosion suppression system for public places and production environments and a working method thereof |
| CN106297139A (en) * | 2016-08-16 | 2017-01-04 | 西安建筑科技大学 | Wireless building fire hazard monitoring system |
| CN106548588A (en) * | 2016-10-28 | 2017-03-29 | 江苏金米智能科技有限责任公司 | A kind of building fire safety monitoring system based on Internet of Things |
| CN106846756A (en) * | 2017-03-28 | 2017-06-13 | 冷明 | A kind of door state monitoring and warning device based on LoRa Internet of Things transmission technologys |
| CN108305426A (en) * | 2017-07-25 | 2018-07-20 | 四川雷克斯智慧科技股份有限公司 | Fire scene intelligent analysis system |
| CN109298876A (en) * | 2017-07-24 | 2019-02-01 | 霍尼韦尔国际公司 | System and method for the firmware updating in the multiple equipment of wireless fire disaster detection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744038A (en) * | 1983-11-01 | 1988-05-10 | Nohmi Bosai Kogyo Co. Ltd. | Fire detector equipped with a sensor |
| CN203149762U (en) * | 2013-01-24 | 2013-08-21 | 上海高智科技发展有限公司 | Volumetric intelligent fire hazard alarm fire extinguishing device |
| CN103546106A (en) * | 2013-10-21 | 2014-01-29 | 杜一敏 | Signal amplification circuit |
| CN103854420A (en) * | 2012-11-30 | 2014-06-11 | 西安奥赛福科技有限公司 | Fire monitoring alarm system based on ZIGBEE |
| CN105096549A (en) * | 2015-09-30 | 2015-11-25 | 胡国旺 | Intelligent building fire control system based on zigbee |
-
2015
- 2015-11-30 CN CN201510853745.7A patent/CN105513255A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744038A (en) * | 1983-11-01 | 1988-05-10 | Nohmi Bosai Kogyo Co. Ltd. | Fire detector equipped with a sensor |
| CN103854420A (en) * | 2012-11-30 | 2014-06-11 | 西安奥赛福科技有限公司 | Fire monitoring alarm system based on ZIGBEE |
| CN203149762U (en) * | 2013-01-24 | 2013-08-21 | 上海高智科技发展有限公司 | Volumetric intelligent fire hazard alarm fire extinguishing device |
| CN103546106A (en) * | 2013-10-21 | 2014-01-29 | 杜一敏 | Signal amplification circuit |
| CN105096549A (en) * | 2015-09-30 | 2015-11-25 | 胡国旺 | Intelligent building fire control system based on zigbee |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105844834A (en) * | 2016-05-20 | 2016-08-10 | 山东华硕能源科技有限公司 | An early-warning inflaming retarding explosion suppression system for public places and production environments and a working method thereof |
| CN105844834B (en) * | 2016-05-20 | 2017-11-14 | 山东华硕能源科技有限公司 | The fire-retardant explosion suppression system of early warning and method of work for public place and production environment |
| CN106297139A (en) * | 2016-08-16 | 2017-01-04 | 西安建筑科技大学 | Wireless building fire hazard monitoring system |
| CN106548588A (en) * | 2016-10-28 | 2017-03-29 | 江苏金米智能科技有限责任公司 | A kind of building fire safety monitoring system based on Internet of Things |
| CN106846756A (en) * | 2017-03-28 | 2017-06-13 | 冷明 | A kind of door state monitoring and warning device based on LoRa Internet of Things transmission technologys |
| CN109298876A (en) * | 2017-07-24 | 2019-02-01 | 霍尼韦尔国际公司 | System and method for the firmware updating in the multiple equipment of wireless fire disaster detection system |
| CN109298876B (en) * | 2017-07-24 | 2024-04-23 | 霍尼韦尔国际公司 | System and method for upgrading firmware in multiple devices of a wireless fire detection system |
| CN108305426A (en) * | 2017-07-25 | 2018-07-20 | 四川雷克斯智慧科技股份有限公司 | Fire scene intelligent analysis system |
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Application publication date: 20160420 |