CN107067628A - Smart home security system - Google Patents
Smart home security system Download PDFInfo
- Publication number
- CN107067628A CN107067628A CN201710371166.8A CN201710371166A CN107067628A CN 107067628 A CN107067628 A CN 107067628A CN 201710371166 A CN201710371166 A CN 201710371166A CN 107067628 A CN107067628 A CN 107067628A
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- China
- Prior art keywords
- module
- alarm
- chip microcomputer
- curtain
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000779 smoke Substances 0.000 claims abstract description 23
- 238000012546 transfer Methods 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000005286 illumination Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H5/00—Devices for drawing draperies, curtains, or the like
- A47H5/02—Devices for opening and closing curtains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H5/00—Devices for drawing draperies, curtains, or the like
- A47H5/02—Devices for opening and closing curtains
- A47H2005/025—Devices for opening and closing curtains controlled by electronic sensors
Abstract
The invention discloses a kind of smart home security system, it is characterised in that：It is made up of humiture module, key-press module, smog and CO alarm modules, single-chip microcomputer, curtain module, GSM message module, LCD MODULE, the humiture module detects corresponding information transfer to the single-chip microcomputer by Temperature Humidity Sensor, smog and the CO alarm module detects corresponding information transfer to the single-chip microcomputer by Smoke Sensor and CO concentration sensors, the key-press module is connected with the single-chip microcomputer, and the single-chip microcomputer controls the curtain module, GSM message module and LCD MODULE；The curtain module selects Belt Alternator folding curtain, is made up of electronic journey, built-in remote-control, motor, clutch and deceleration device.
Description
Technical field
The present invention relates to smart home field, specifically, more particularly, to smart home security system.
Background technology
As the traditional house system of the development of science and technology can not meet the demand of people, smart home has become one
Individual trend.The most basic target of smart home is to provide a comfortably, conveniently, safely and efficiently living environment for people.With
The rapid popularization of GSM mobile communication and increasingly competitive, the development and application of new technology and new business is particularly significant, GSM
Module is increasingly favored as a kind of main GSM network access device by entrepreneur, and letter is provided a user using gsm module
Breath is smart home most succinct interactive mode.
The content of the invention
For problems of the prior art, it according to the most basic target of smart home is for people that the purpose of the present invention, which is,
Provide one it is comfortable, conveniently, safely and efficient living environment, with GSM mobile communication rapid popularization and compete increasingly
The development and application of fierceness, new technology and new business is particularly significant, and gsm module is used as a kind of main GSM network access device
Increasingly favored by entrepreneur, it is smart home most succinct interactive mode to provide a user information using gsm module.
In order to realize foregoing invention purpose, the technical solution adopted by the present invention is：A kind of smart home security system, it is special
Levy and be：It by humiture module, key-press module, smog and CO alarm modules, single-chip microcomputer, curtain module, GSM message module,
LCD MODULE is constituted, and the humiture module detects corresponding information transfer to the monolithic by Temperature Humidity Sensor
Machine, smog and the CO alarm module detects corresponding information transfer to described by Smoke Sensor and CO concentration sensors
Single-chip microcomputer, the key-press module is connected with the single-chip microcomputer, the single-chip microcomputer control the curtain module, GSM message module and
LCD MODULE；
The curtain module selects Belt Alternator folding curtain, using 220V autosynchronous motors DT52E as power,
The Belt Alternator folding curtain is made up of electronic journey, built-in remote-control, motor, clutch and deceleration device；The curtain module
Directly controlled to be connected in DT52E type motors with 4P4C crystal heads line with radio frequency signal control, the single-chip microcomputer by single-chip microcomputer
Light current interface and P10 interfaces are controlled, indoor intensity of illumination is detected using digital intensity of illumination sensor TSL2561, works as detection
When being less than preset value to indoor intensity of illumination, or the time opening time is then, opens intelligent curtain；
Smog and the CO alarm module is using MQ-2 types Smoke Sensor, MQ-7 type CO concentration sensors, GSM alarm moulds
Block, fan of arranging in pairs or groups realizes to dangerous situation and alarm and simple process；The MQ-2 types Smoke Sensor rear end overlaps wind
Fan, GSM alarm modules, are easy to the very first time to carry out processing and watchful user in time to the condition of a fire；
The MQ-2 types Smoke Sensor adds discharge circuit, is compared by currency and the wealthy value of standard, passes through electricity
Potential difference embodies whether to have smog, and completes rear end work；
The MQ-2 types Smoke Sensor is compared by current smokescope value with the wealthy value of standard, passes through amplifier electricity
Road, produces high level, is exported from OUT terminal mouthful, into control panel A5 ports, control panel is received after high level, then is had in environment
Smog, D5, D10 port output high level, control alarm and fan are operated；Control signal is produced by serial ports simultaneously,
Alarm signal is issued the user with by gsm module；
CO concentration in the MQ-7 types CO concentration sensor determination of the environment, the MQ-7 types CO concentration sensors are altogether by 6
Individual pin, wherein the effect of No. 5, No. 6 pins is heating, the effect of 1 to No. 4 pin is to extract signal, when MQ-7 type CO concentration
When sensor is in home, low level is exported, now control panel A6 ports receive low level, attonity；When CO concentration
When continuing to increase, the analog voltage of MQ-7 type CO concentration sensors can increase, and when more than wealthy value is set, then export high level,
A6 ports in control panel are received from that after level, can send control signal to blower module and gsm module, are completed ventilation and are reported
Alert work；
The fan is made up of the control signal of ventilation module, the ventilation module a DC fan and H pole pipes,
What H pole pipes were played is the amplification to control electric current, when MQ-2 types Smoke Sensor or the spy of MQ-7 type CO concentration sensors
When measuring abnormal, a high level is fed back to, the control panel of single-chip microcomputer is received after signal, D10 ports output high level so that
Fan circuit is turned on, and reaches the purpose of exhaust ventilation；
The flame monitoring module uses ultraviolet flame sensor.
Beneficial effect：It is an object of the present invention to by way of gsm module intelligent control, for people provide one it is comfortable,
Conveniently, safely with efficient living environment.Curtain module is simple using the direct control mode wiring of single-chip microcomputer, reliable and stable, and
Easily realize.
Brief description of the drawings
Fig. 1, the smart home security system structural representation of the embodiment of the present invention.
Fig. 2, the intelligent curtain of the embodiment of the present invention controls the hardware elementary diagram of circuit.
Fig. 3, the Smoke Sensor module circuit diagram of the embodiment of the present invention.
Fig. 4, the CO concentration sensor module circuit diagrams of the embodiment of the present invention.
Fig. 5, the ventilation module circuit diagram of the embodiment of the present invention.
Fig. 6, the naked light monitoring schematic diagram of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The smart home security system that the present embodiment is introduced is main by DHT-11 humitures module, smog and CO alarm mould
Block, photo resistance, SIM900A communications, 1602 LCDs, electrically driven curtain composition are (as shown in figure 1, the intelligence of the present embodiment
Household security system structural representation).Main control chip uses MSP430F149.
Curtain selects Belt Alternator folding curtain, and power, including electronics are used as using 220V autosynchronous motors DT52E
The parts such as stroke, built-in remote-control, motor, clutch and deceleration device, with electronic journey is spacing and built-in remote-control function, is hampered and stops
Only function, touch startup function and third trip point function etc..Fig. 2 is that the hardware of the intelligent curtain control circuit of the present embodiment is former
Reason figure.
Intelligent curtain has two kinds of control modes：Single-chip microcomputer is directly controlled and radio frequency signal control.Single-chip microcomputer is directly controlled
The circuit of system is as shown in Figure 3.With control light current interface and P10 interfaces in 4P4C crystal heads line connection DT52E type motors, when needs are opened
When opening intelligent curtain (intensity of illumination that digital intensity of illumination sensor TSL2561 detects interior is less than preset value, or
The time opening time arrives), the pin P6.3 output low levels of single-chip microcomputer, relay coil K1 adhesives, normally opened contact closure, and point
Bright status indicator lamp D22, connection conducting rotates forward line (black) and signal wire (yellow), and controlled motor is rotated forward, and opens curtain.When drawing
Pin P6.4 exports low level, control relay connection conducting reversed line (red) and signal wire (yellow), and motor reversal closes window
Curtain.Relay coil two ends simultaneously meet diode IN4148, for absorbing inverse electromotive force, shield, prevent reverse potential
Puncture triode and disturb other circuits.The direct control mode wiring of single-chip microcomputer is simple, reliable and stable, and easily realizes.
Smog and CO alarm modules.
Current fire of high-rise building accident is the very big hidden danger for endangering user security, and natural gas leaking is also to cause people in addition
Member's poisoning even arch-criminal of death, therefore very first time progress alert process is particularly important, present invention employs MQ-2 types
Smoke Sensor, MQ-7 type CO concentration sensors, GSM alarm modules, collocation fan etc., realize to dangerous situation and alarm
And simple process.
MQ-2 type Smoke Sensors, are produced huge after exactly being caught fire using the purpose of this sensor in order to avoid household internal
Dense smoke, causes personnel to suffocate, and particularly old man or child are easier the possible permanent damage by dense smoke.In the present invention, in kitchen
MQ-2 type Smoke Sensors have been laid in the fire-hazardous place such as room, and rear end overlap joint fan, GSM alarm modules are easy to the very first time
Processing and watchful user in time are carried out to the condition of a fire.
Smoke Sensor is exactly, based on MQ-2, to add discharge circuit, be compared by currency and the wealthy value of standard,
Whether have smog, and complete rear end work if being embodied by potential difference.As shown in figure 3, being the Smoke Sensor mould of the present embodiment
The circuit diagram of block.
In the present embodiment, if producing larger smog in environment, Smoke Sensor passes through current smokescope value and mark
Accurate wealthy value is compared, by discharge circuit, produces high level, is exported from OUT terminal mouthful, into control panel A5 ports, control panel
Receive after high level, it is believed that have smog in environment, D5, D10 port output high level control alarm and fan to be transported
Turn.In addition, producing control signal by serial ports simultaneously, alarm signal is issued the user with by gsm module.
In addition to the smog serious harm healthy to personnel, CO is also to cause one of arch-criminal of personnel's poisoning.
The present invention is using MQ-7 come the CO concentration in determination of the environment.MQ-7 operation principle is similar with MQ-2, and it and MQ-2 difference are
Sensitivity of the MQ-7 to CO is higher, can W effectively detect the increase of CO concentration, reach and alarm, open fan the mesh of ventilation
's.MQ-7 type CO concentration sensors module circuit diagrams such as Fig. 4.
MQ-7 is altogether by 6 pins, wherein the effect of No. 5, No. 6 pins is heating, the effect of 1 to No. 4 pin is to extract
Signal, when MQ-7 is in home, exports low level, now control panel A6 ports receive low level, attonity.Work as CO
When concentration continues to increase, the analog voltage of MQ-7 type CO concentration sensors can increase, when more than wealthy value is set, then output is high electric
Flat, the A6 ports in control panel are received from that after level, can send control signal to blower module and gsm module, complete ventilation
And alert operation.
Ventilation module above-mentioned and gsm module are two independent modules, by control signal, realize light current for
The control of forceful electric power fan and SMS alarm function.The composition of the two parts is given below.Ventilation module is main by a direct current
Fan and H pole pipes composition, what H pole pipes were played is the amplification to control electric current, as MQ-2 types Smoke Sensor or MQ-7
When type CO concentration sensors detect abnormal, a high level is fed back to, control panel is received after signal, the output of D10 ports is high
Level so that fan circuit is turned on, and reaches the purpose of exhaust ventilation.Fig. 5 is the circuit diagram of ventilation module.
The gsm module used in this smart home such as Fig. 5, the module has multiple-working mode, because its mode of operation
A variety of variabilities so that its can W such as scheme to keep extremely low power consumption in day in normal work, so as to reach overall reduction system work(
The purpose of consumption.
SIM900A AT are instructed.
In every business of gsm mobile communication system, short message service is that gsm system is supplied to user's a kind of different
In the communication traffic of voice transfer.It is transmitted using signaling-information (when SDCCH user is normal or SACCH user's busy).Point is arrived
The short message service of point i.e. by MO (MS initiates short message service) and MT, (plant short message service and send out a short message from an entity by MS kinds
It is sent to the business of specified destination address.AT Attention, during instruction set from terminal device (Terminal Equipment,
) or data terminal equipment (Data Terminal Equipment, DTE) is to terminal adapter (Terminal ATTE
Adapter, TA) or data circuit termination equipment (Data Circuit Terminal Equipment, DCE) transmission.Pass through
TA, TE send AT instructions to control mobile station (Mobile Station, MS) function, are interacted with GSM network business.With
Family can be instructed by AT be called, short message, phone directory, data service, the control in terms of fax.
Flame monitoring module.
The flame sensor that the present embodiment is selected is ultraviolet flame sensor, and flame radiation is often the gas of discrete spectrum
Body radiate and continuous spectrum a kind of simultaneous radiation of solid radiative, wavelength is 0.1~10 μm or broader scope, typically
Ultraviolet by the use of wavelength ＜ 300nm is used as detectable signal.Because UV sensor is only in 185~260nm narrow ranges
Ultraviolet responded, it is and insensitive to the light of other spectral ranges, can also so avoid the interference of other signals.Separately
Outside, ultraviolet band belongs to solar spectrum blind area (day-old chick) in 220~280nm of flame detecting.Using ultraviolet flame Detection Techniques,
Just system can be allowed to avoid most powerful lamp --- the sun is to the influence caused by circuit.It can thus mitigate significantly
The burden of information processing, while also improving its reliability well.In addition, ultraviolet flame detection technique uses photon detection hand
Section, makes system have atomic Testing of Feeble Signals ability, its signal to noise ratio is also greatly improved.Naked light monitoring principle is as shown in Figure 6.
In Fig. 5, R1Effect be partial pressure and current limliting, fireless state, sensor is like resistance very little
Resistance, exports a high level after a comparator；When there is flame, sensor is equivalent to a resistance very big electricity
Resistance, the voltage got exports a low level after comparator.R3Effect then be adjust flame sensor sensitivity.
The technological thought of embodiment above only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is all
It is any change done on the basis of technical scheme according to technological thought proposed by the present invention, each falls within present invention protection model
Within enclosing.The technology that the present invention is not directed to can be realized by existing technology.
Claims (1)
1. a kind of smart home security system, it is characterised in that：It is by humiture module, key-press module, smog and CO alarm mould
Block, single-chip microcomputer, curtain module, GSM message module, LCD MODULE composition, the humiture module pass through temperature and humidity sensing
Device detects corresponding information transfer to the single-chip microcomputer, and smog and the CO alarm module passes through Smoke Sensor and CO concentration
Sensor detects corresponding information transfer to the single-chip microcomputer, and the key-press module is connected with the single-chip microcomputer, the monolithic
Machine controls the curtain module, GSM message module and LCD MODULE；
The curtain module selects Belt Alternator folding curtain, described using 220V autosynchronous motors DT52E as power
Belt Alternator folding curtain is made up of electronic journey, built-in remote-control, motor, clutch and deceleration device；The curtain module is by list
Piece machine is directly controlled and radio frequency signal control, and the single-chip microcomputer is weak with being controlled in 4P4C crystal heads line connection DT52E type motors
Electrical interface and P10 interfaces, indoor intensity of illumination is detected using digital intensity of illumination sensor TSL2561, when detecting room
When interior intensity of illumination is less than preset value, or the time opening time is then, opens intelligent curtain；
Smog and the CO alarm module uses MQ-2 types Smoke Sensor, MQ-7 type CO concentration sensors, GSM alarm modules,
Collocation fan, realizes to dangerous situation and alarm and simple process；The MQ-2 types Smoke Sensor rear end overlap joint fan,
GSM alarm modules, are easy to the very first time to carry out processing and watchful user in time to the condition of a fire；
The MQ-2 types Smoke Sensor adds discharge circuit, is compared by currency and the wealthy value of standard, passes through potential difference
To embody whether have smog, and complete rear end work；
The MQ-2 types Smoke Sensor is compared by current smokescope value with the wealthy value of standard, passes through discharge circuit, production
Raw high level, is exported, into control panel A5 ports, control panel is received after high level, then has smog in environment from OUT terminal mouthful,
D5, D10 port export high level, and control alarm and fan are operated；Control signal is produced by serial ports simultaneously, passed through
Gsm module issues the user with alarm signal；
CO concentration in the MQ-7 types CO concentration sensor determination of the environment, the MQ-7 types CO concentration sensors are altogether by 6 pipes
Pin, wherein the effect of No. 5, No. 6 pins is heating, the effect of 1 to No. 4 pin is to extract signal, when MQ-7 type CO concentration sensing
When device is in home, low level is exported, now control panel A6 ports receive low level, attonity；When CO concentration continues
During increase, the analog voltage of MQ-7 type CO concentration sensors can increase, and when more than wealthy value is set, then export high level, control
A6 ports in plate are received from that after level, can send control signal to blower module and gsm module, complete ventilation and alarm work
Make；
The fan is made up of the control signal of ventilation module, the ventilation module a DC fan and H pole pipes, H poles
What pipe was played is the amplification to control electric current, when MQ-2 types Smoke Sensor or MQ-7 type CO concentration sensors are detected
When abnormal, a high level is fed back to, the control panel of single-chip microcomputer is received after signal, D10 ports output high level so that fan
Circuit turn-on, reaches the purpose of exhaust ventilation；
The flame monitoring module uses ultraviolet flame sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371166.8A CN107067628A (en) | 2017-05-24 | 2017-05-24 | Smart home security system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371166.8A CN107067628A (en) | 2017-05-24 | 2017-05-24 | Smart home security system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107067628A true CN107067628A (en) | 2017-08-18 |
Family
ID=59609960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710371166.8A Pending CN107067628A (en) | 2017-05-24 | 2017-05-24 | Smart home security system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107067628A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110363952A (en) * | 2019-08-20 | 2019-10-22 | 宝钢湛江钢铁有限公司 | A kind of contactless early warning system of fire-fighting early stage |
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| CN102710060A (en) * | 2012-05-10 | 2012-10-03 | 余姚市精诚高新技术有限公司 | Motor with opening and closing curtain |
| CN104242543A (en) * | 2013-12-17 | 2014-12-24 | 杭州威仕达机电科技有限公司 | Curtain opening and closing motor with electromagnet clutch |
| CN204576734U (en) * | 2015-04-02 | 2015-08-19 | 长沙学院 | Poisoning and the fire alarm security system of family gas |
| CN204899721U (en) * | 2015-07-17 | 2015-12-23 | 宁波杜亚机电技术有限公司 | Intelligence (window) curtain light modulator |
| CN206097382U (en) * | 2016-10-21 | 2017-04-12 | 菏泽学院 | Automatic protecting window family is prevented in warning |
-
2017
- 2017-05-24 CN CN201710371166.8A patent/CN107067628A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006055617A1 (en) * | 2006-11-24 | 2008-05-29 | Funa Gmbh | Fire protection systems for technical installations |
| CN102710060A (en) * | 2012-05-10 | 2012-10-03 | 余姚市精诚高新技术有限公司 | Motor with opening and closing curtain |
| CN104242543A (en) * | 2013-12-17 | 2014-12-24 | 杭州威仕达机电科技有限公司 | Curtain opening and closing motor with electromagnet clutch |
| CN204576734U (en) * | 2015-04-02 | 2015-08-19 | 长沙学院 | Poisoning and the fire alarm security system of family gas |
| CN204899721U (en) * | 2015-07-17 | 2015-12-23 | 宁波杜亚机电技术有限公司 | Intelligence (window) curtain light modulator |
| CN206097382U (en) * | 2016-10-21 | 2017-04-12 | 菏泽学院 | Automatic protecting window family is prevented in warning |
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| CN110363952A (en) * | 2019-08-20 | 2019-10-22 | 宝钢湛江钢铁有限公司 | A kind of contactless early warning system of fire-fighting early stage |
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Application publication date: 20170818 |