CN103901868A - Intelligent controller for gas leakage power supply - Google Patents
Intelligent controller for gas leakage power supply Download PDFInfo
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- CN103901868A CN103901868A CN201410159216.2A CN201410159216A CN103901868A CN 103901868 A CN103901868 A CN 103901868A CN 201410159216 A CN201410159216 A CN 201410159216A CN 103901868 A CN103901868 A CN 103901868A
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Abstract
The invention provides an intelligent controller for a gas leakage power supply. The intelligent controller is aimed at timely detecting and alarming and then cutting off a water heater power supply while indoor ventilating and exhausting are conducted when gas leakage of a domestic gas water heater happens. The intelligent controller comprises a controller body and a controller circuit board. The controller circuit board is arranged in the controller body, and a control circuit is arranged on the controller circuit board. The control circuit comprises a power supply circuit, a voltage-stabilizing circuit, a sensor and voltage setting circuit, a comparison circuit, a relay driving circuit and a power-off, ventilating and alarming execution circuit. The power supply circuit, the voltage-stabilizing circuit, the sensor and voltage setting circuit, the comparison circuit and the relay driving circuit are connected in sequence, the power supply circuit supplies a 12 V direct current power supply to the whole control circuit, 8 V stabilized voltage is output after the 12 V direct current power supply passes through the voltage-stabilizing circuit, and the 8 V stabilized voltage passes through the sensor and voltage setting circuit. When the over-standard concentration of combustible gases is detected by a sensor, the power-off, ventilating and alarming execution circuit works.
Description
Technical field
A kind of gas leakage power supply smart of the present invention controller is detect and report to the police in time after one is directed to domestic gas-fired water heater generation gas leakage, then cuts off water heater power supply, carries out the intelligent controller of room ventilation exhaust simultaneously.
Background technology
Popularizing of combustion gas (artificial coal gas, rock gas, liquefied petroleum gas (LPG)), production efficiency, civic quality of life are improved, but in the process of use combustion gas, the gas explosion that causes because of the reason such as gas leakage, waste gas, the mishap such as poisoning happen occasionally, brought serious threat to people's safety of life and property, therefore use combustion gas safely is the most important thing of combustion gas competent authorities work always.
Family expenses flammable gas alarm is generally installed on main gas valve door in the market, and existing gas-cooker is substantially all equipped with electromagnetic valve, closes the electromagnetic valve meeting automatic closing gas source of the rear gas-cooker of fire, has weakened to a great extent the function of this type of alarm.While use for gas heater, occur that hidden danger, the follow-up emergency treatment etc. of power supply initiation fire all lacks relevant control function after gas leakage, user's state of can not clearing completely.
Summary of the invention
The object of the invention is provides a kind of gas leakage power supply smart controller for above-mentioned weak point, utilize sensor to monitor combustable gas concentration signal, be transformed into voltage signal, then compare with the voltage signal of setting, in the time that gas concentration exceedes setting value, realize intelligent power-off and can open fan and take a breath.
A kind of gas leakage power supply smart controller takes following technical scheme to realize: a kind of gas leakage power supply smart controller comprises controller body and controller circuit board, controller circuit board is arranged in controller body, control circuit is installed on controller circuit board, described control circuit comprises power circuit, mu balanced circuit, sensor and setting voltage circuit, comparator circuit, relay drive circuit and power-off ventilation warning executive circuit, described power circuit, mu balanced circuit, sensor and setting voltage, comparator circuit is connected successively with relay drive circuit, power circuit provides the direct supply of 12 V to whole control circuit, after mu balanced circuit, export the voltage that 8 V are stable, then by sensor and setting voltage circuit, in the time of inflammable gas concentration over-standard that sensor detects, the output voltage of sensor is greater than the magnitude of voltage of setting, thereby makes comparator circuit output high level, through relay drive circuit, make the work of power-off ventilation warning executive circuit, exhaust fan is opened automatically, the warning of cutting off the electricity supply, in the time that inflammable gas concentration does not exceed standard, the output voltage of sensor is less than setting voltage, thereby makes comparator circuit output low level, thus can not drive fan circuit working, can not cut off gas heater power supply.
Described power circuit comprises step-down transformer, single phase bridge type rectifier circu and filter capacitor, alternating current is connected with single phase bridge type rectifier circu after step-down transformer, after single phase bridge type rectifier circu, alternating current changes DC current into, enters the first filter capacitor filtering.
Described mu balanced circuit adopts three terminal regulator, three terminal regulator is connected with the direct-flow positive voltage output terminal of single phase bridge type rectifier circu and one end of the first filter capacitor, the filtered electric current input of the first filter capacitor three terminal regulator 1 pin, export the DC voltage of 8V at the second filter capacitor two ends through the DC voltage of three terminal regulator stable output, for subsequent conditioning circuit provides direct supply.
Described step-down transformer adopts the step-down transformer of commercially available AC220 V/ACl2 V.
Described three terminal regulator adopts commercially available three terminal integrated voltage stabilizer LM7808, although current rectifying and wave filtering circuit can be transformed into sine wave comparatively level and smooth DC voltage, but on the one hand because average voltage depends on transformer secondary voltage effective value, so in the time of voltage ripple of power network, output voltage average value will produce corresponding fluctuation thereupon; Due to the existence of current rectifying and wave filtering circuit internal resistance, in the time of load variations, the voltage in internal resistance will change on the other hand, so output voltage average value also produces contrary variation thereupon.Therefore, current rectifying and wave filtering circuit output voltage can fluctuate along with the fluctuation of line voltage.Change along with the variation of pull-up resistor, in order to obtain good DC voltage, must take voltage stabilizing measure, in power circuit, add three terminal regulator to carry out voltage stabilizing.
Form the required peripheral cell of stabilized voltage supply with 78 serial three-terminal voltage-stabilizing IC few, inside circuit also has overcurrent, overheated and adjust the holding circuit of pipe, and it is reliable, convenient to use, and low price.Poor 2 V that are about of minimum input/output voltage of general three end integrated stable voltage circuits, otherwise voltage that can not stable output.Generally should make voltage difference remain on 4～5 V, through transformer transformation, thyristor rectifier, the voltage after capacitor filtering should be worth than voltage stabilizing higher.Because circuit required voltage is 8 V, and be 12 V left and right through the voltage of transformer and fairing output, therefore IC7808 type three terminal regulator is selected in this design, the burning voltage of output 8 V.
Described sensor and setting voltage circuit comprise detection potential circuit and setting voltage circuit, detect potential circuit and comprise resistance R 0, gas sensor, resistance R 1 and resistance R 2, and setting voltage circuit comprises resistance R 3, resistance R 4, resistance R 5 and thermistor RT; 1 end (signal input part) of resistance R 0 and gas sensor is connected, 4 ends (power end) of gas sensor are in series with resistance R 3, resistance R 4 and R5 successively, 2 ends (signal output part) of gas sensor are in series with resistance R 1 and R2 successively, in resistance R 1 and resistance R 2, be parallel with capacitor C 2, shunt capacitance C3 in resistance R 5, thermistor RT and resistance R 3 are in parallel.
Described resistance R 2 adopts slide rheostat, and described thermistor RT role is that circuit compensates, and the impact of compensation temperature on sensor characteristic obtains higher precision simultaneously.
Test section circuit output voltage enters comparator circuit, and reference voltage is made up of resistance R 3, resistance R 4, resistance R 5 and thermistor RT; Described comparator circuit comprises voltage comparator, resistance R 6, resistance R 7 and resistance R 8, one end of resistance R 6 is connected with the in-phase input end of voltage comparator, the other end of resistance R 6 is connected with the output terminal of voltage comparator, resistance R 7 and resistance R 8 are serially connected in the output terminal of voltage comparator, resistance R 6, resistance R 7 and resistance R 8, as auxiliary resistance, are used for guaranteeing the stability of voltage comparator output.
Described relay drive circuit comprises that LED luminotron, phase inverter, relay drive chip and relay coil; The input end of phase inverter is connected with resistance R 8, and the output terminal of phase inverter drives chip to be connected with relay; One end of LED luminotron is connected with resistance R 8, and the other end of LED luminotron drives chip to be connected with relay, and relay coil drives chip to be connected with relay.
Described phase inverter adopts 74LS04 phase inverter, and described relay drives chip to adopt BL8023.
Described LED luminotron is for reporting to the police as light
.
Described power-off ventilation warning executive circuit comprises alarm and exhaust fan, and alarm and exhaust fan are serially connected in 220V AC power one side, and are connected with the normally opened contact of relay coil.
Described gas sensor adopts gas sensor, and gas sensor can adopt commercially available TGS813 sensor, belongs to N-type semiconductor class gas sensor, and its principal ingredient is tin ash sintered body.Such as, when absorbing and reducing gas (liquefied gas, rock gas, hydrogen, carbon monoxide, organic solvent steam etc.), conductivity rises.In the time returning in clean air, conductivity is recovered.TGS sensor is exactly by this conductivity variations, takes out, thereby detect the concentration of gas in the mode of output voltage.TGS sensor great advantage is that the life-span is long, and the sensory characteristic of TGS sensor only changes and is cyclical variation with the humiture in the four seasons, and the trend of monotone variation, does not illustrate that SnO2 semiconductor gas sensor has the extremely long life-span.Because design is for family expenses inflammable gas, therefore select for the TGS813 type gas sensor of rock gas, liquefied gas, gas to be monitored.The major parameter of TGS813 gas sensor: heating voltage is DC/AC (5 O.2 V of V soil), 537 ℃ of ignition temperatures, explosion limits is 5%～15%, temperature is 200 ℃ of <T≤300 ℃.The Warning alarm concentration of sensor settings should be 10% of LEL (lower explosive limit), danger warning concentration should be 20% of LEL (lower explosive limit), and the explosion limits of TGS813 type gas sensor is 5% (airborne number percent), namely 50 000 ppm, therefore warning concentration should be 5 000～10 000 ppm.
principle of work:a kind of gas leakage power supply smart controller is arranged on water heater power supply plug inside, by the break-make of pilot relay contact normally opened contact control water heater power supply plug whether electric, when water heater normal power-up is used, the detection voltage of sensor detection potential circuit output and the reference voltage of setting voltage circuit output are input to the input end of voltage comparator, and the output terminal of voltage comparator is connected to relay through LED luminotron and drives chip.Gas sensor is monitored inflammable gas concentration, when normal work, the magnitude of voltage of gas sensor output voltage signal and setting compares by voltage comparator, in the time that gas concentration exceeds standard, the magnitude of voltage of gas sensor output exceedes the magnitude of voltage when normal, thereby makes the output of voltage comparator forward; Then output drives relay coil to obtain electric its normally closed contact and opens the phase line disconnection making in water heater power supply plug, sending the relay normally open contact simultaneously of reporting to the police closes, connect exhaust fan power supply and make its outside exhaust, play and reduce indoor fuel gas concentration, automatically disconnect pot-type boiler power supply and automatic alarm ventilatory thereby realize.
invention advantage:a kind of gas leakage power supply smart of the present invention controller takes to utilize separately the development scheme of hardware, takes full advantage of the characteristic of gas sensor and other elements, and it is complemented each other.Its circuit structure is simple, uses elements relative less, and its cost of manufacture is reduced greatly, economical and practical, has adapted to the trend that fuel gas alarm price progressively reduces, and has higher cost performance.Gas leakage intelligent controller is installed in water heater power supply plug, the effectively concentration of inflammable gas or poisonous gas (as CO) in monitoring of environmental, once its concentration exceeds alarm limit definite value, automatically cut off the power supply in domestic gas-fired water heater attaching plug, send alerting signal, automatically open exhaust fan outside combustion gas discharge chamber simultaneously, the on-the-spot institute occurring of actual accidents taking into full account likely, play the effect of safety precaution, for people's personal safety as well as the property safety is established together barrier reliably.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
Fig. 1 is the principle of work schematic diagram of a kind of gas leakage power supply smart of the present invention controller;
The electrical schematic diagram of a kind of gas leakage power supply smart of Fig. 2 the present invention controller.
Embodiment
With reference to accompanying drawing 1 ~ 2, a kind of gas leakage power supply smart of the present invention controller comprises controller body and controller circuit board, controller circuit board is arranged in controller body, control circuit is installed on controller circuit board, described control circuit comprises power circuit, mu balanced circuit, sensor and setting voltage circuit, comparator circuit, relay drive circuit and power-off ventilation warning executive circuit, described power circuit, mu balanced circuit, sensor and setting voltage, comparator circuit is connected successively with relay drive circuit, power circuit provides the direct supply of 12 V to whole control circuit, after mu balanced circuit, export the voltage that 8 V are stable, then by sensor and setting voltage circuit, in the time of inflammable gas concentration over-standard that sensor TGS detects, the output voltage of sensor TGS is greater than the magnitude of voltage of setting, thereby makes comparator circuit output high level, through relay drive circuit, make the work of power-off ventilation warning executive circuit, exhaust fan PF opens automatically, the warning of cutting off the electricity supply, in the time that inflammable gas concentration does not exceed standard, the output voltage of sensor TGS is less than setting voltage, thereby makes comparator circuit output low level, thus can not drive fan circuit working, can not cut off gas heater power supply.
Described power circuit comprises step-down transformer T0, single phase bridge type rectifier circu BRIDGE1 and filter capacitor, alternating current is connected with single phase bridge type rectifier circu BRIDGE1 after step-down transformer T0, after single phase bridge type rectifier circu BRIDGE1, alternating current changes DC current into, enters the first filter capacitor filtering C0.
Described mu balanced circuit adopts three terminal regulator WYQ, three terminal regulator WYQ is connected with the direct-flow positive voltage output terminal of single phase bridge type rectifier circu BRIDGE1 and one end of the first filter capacitor C0,1 pin of the filtered electric current input of the first filter capacitor C0 three terminal regulator WYQ, export the DC voltage of 8V at the second filter capacitor C1 two ends through the DC voltage of three terminal regulator WYQ stable output, for subsequent conditioning circuit provides direct supply.
Described step-down transformer T0 adopts the step-down transformer of commercially available AC220 V/ACl2 V.
Described three terminal regulator WYQ adopts commercially available three terminal integrated voltage stabilizer LM7808.
Described sensor and setting voltage circuit comprise detection potential circuit and setting voltage circuit, detect potential circuit and comprise resistance R 0, gas sensor TGS, resistance R 1 and resistance R 2, setting voltage circuit comprises resistance R 3, resistance R 4, resistance R 5 and thermistor RT; 1 end (signal input part) of resistance R 0 and gas sensor TGS is connected, 4 ends (power end) of gas sensor TGS are in series with resistance R 3, resistance R 4 and R5 successively, 2 ends (signal output part) of gas sensor TGS are in series with resistance R 1 and R2 successively, in resistance R 1 and resistance R 2, be parallel with capacitor C 2, shunt capacitance C3 in resistance R 5, thermistor RT and resistance R 3 are in parallel.
Described resistance R 2 adopts slide rheostat, and described thermistor RT role is that circuit compensates, and the impact of compensation temperature on sensor characteristic obtains higher precision simultaneously.
Test section circuit output voltage enters comparator circuit, and reference voltage is made up of resistance R 3, resistance R 4, resistance R 5 and thermistor RT; Described comparator circuit comprises voltage comparator B JQ, resistance R 6, resistance R 7 and resistance R 8, one end of resistance R 6 is connected with the in-phase input end of voltage comparator B JQ, the other end of resistance R 6 is connected with the output terminal of voltage comparator B JQ, resistance R 7 and resistance R 8 are serially connected in the output terminal of voltage comparator B JQ, resistance R 6, resistance R 7 and resistance R 8, as auxiliary resistance, are used for guaranteeing the stability of voltage comparator B JQ output.
Described relay drive circuit comprises that LED luminotron, phase inverter FXQ, relay drive chip JKQ and relay coil JK; The input end of phase inverter FXQ is connected with resistance R 8, and the output terminal of phase inverter FXQ drives chip JKQ to be connected with relay; One end of LED luminotron is connected with resistance R 8, and the other end of LED luminotron drives chip JKQ to be connected with relay, and relay coil JK drives chip JKQ to be connected with relay.
Described phase inverter FXQ adopts 74LS04 phase inverter, and described relay drives chip JKQ to adopt BL8023.
Described LED luminotron is for reporting to the police as light
.
Described power-off ventilation warning executive circuit comprises alarm BELL and exhaust fan PF, and alarm BELL and exhaust fan PF are serially connected in 220V AC power one side, and are connected with the normally opened contact of relay coil JK.
Described gas sensor TGS adopts gas sensor, and gas sensor can adopt commercially available TGS813 sensor.
Described relay drives chip JKQ to adopt BL8023 chip, relay drives chip BL8023 to have 2 input ends, and these two input signals must be contrary, voltage comparator B JQ adopts LM311 voltage comparator, the output of voltage comparator LM311 is divided into 2 tunnels, one tunnel is connected to 3 pin of relay driving chip BL8023, and 7 pin of electrical equipment driving chip BL8023 are succeeded on another road through phase inverter 74LS04 output, and relay drives 1 pin of chip BL8023 and the output of 5 pin to succeed electrical equipment JK coil.
A kind of gas leakage power supply smart controller is arranged in water heater power supply plug CT, when water heater normal power-up is used, the detection voltage of sensor detection potential circuit output and the reference voltage of setting voltage circuit output are input to the input end of voltage comparator, the output terminal of voltage comparator LM311 is connected to 3 ends of relay driving chip BL8023 through LED luminotron, after the output termination phase inverter of voltage comparator LM311, arrive 7 ends of relay driving chip BL8023 simultaneously, relay drives output terminal 1 pin and 5 pin of chip BL8023 to succeed electric apparatus coil JK, relay coil JK obtains the contact action that is connected to 220V alternating current source after electric, closed exhaust fan PF and the alarm BELL of connecting of normally opened contact, normally closed contact disconnects water heater power supply plug.The voltage of voltage comparator LM311 output is divided into 2 tunnels, and a road is connected to 3 pin of BL8023, and another road is connected to 7 pin of BL8023 after 74LS04 negate.
In Fig. 2, U represents reference voltage, U0 represents sensor output voltage, gas sensor is monitored inflammable gas concentration, when normal work, the magnitude of voltage of gas sensor output voltage signal and setting compares by voltage comparator, in the time that gas concentration exceeds standard, in the time that gas concentration exceeds standard, voltage comparator LM311 exports high level, red luminotron luminous alarm, namely UA=1, UB=0, it is electric that relay drives chip BL8023 output signal that relay is obtained, relay normally closed, normally opened contact is connected to water heater plug-in power pack and exhaust fan, once relay coil obtains electric, closed exhaust fan and the alarm of starting of normally opened contact, it (is that magnitude of voltage that gas sensor is exported exceedes the magnitude of voltage when normal that normally closed contact disconnects being connected of water heater power supply plug and power supply, thereby make the output of voltage comparator forward, output drives relay coil to obtain electric, its normally closed contact is opened, make the phase line disconnection in water heater power supply plug send warning, relay normally open contact closes simultaneously, connect exhaust fan power supply and make its outside exhaust, play and reduce indoor fuel gas concentration, automatically disconnect pot-type boiler power supply and automatic alarm ventilatory thereby realize), in the time that gas concentration does not exceed standard, voltage comparator LM311 output low level, LED luminotron is not luminous, namely UA=0, UB=1, relay drives chip BL8023 output signal to make the relay must not electricity, and gas heater is normally worked.
Claims (10)
1. a gas leakage power supply smart controller, it is characterized in that: comprise controller body and controller circuit board, controller circuit board is arranged in controller body, control circuit is installed on controller circuit board, described control circuit comprises power circuit, mu balanced circuit, sensor and setting voltage circuit, comparator circuit, relay drive circuit and power-off ventilation warning executive circuit, described power circuit, mu balanced circuit, sensor and setting voltage, comparator circuit is connected successively with relay drive circuit, power circuit provides the direct supply of 12 V to whole control circuit, after mu balanced circuit, export the voltage that 8 V are stable, then by sensor and setting voltage circuit, in the time of inflammable gas concentration over-standard that sensor detects, the output voltage of sensor is greater than the magnitude of voltage of setting, thereby makes comparator circuit output high level, through relay drive circuit, make the work of power-off ventilation warning executive circuit, exhaust fan is opened automatically, the warning of cutting off the electricity supply, in the time that inflammable gas concentration does not exceed standard, the output voltage of sensor is less than setting voltage, thereby makes comparator circuit output low level, thus can not drive fan circuit working, can not cut off gas heater power supply.
2. a kind of gas leakage power supply smart controller according to claim 1, it is characterized in that: described power circuit comprises step-down transformer, single phase bridge type rectifier circu and filter capacitor, alternating current is connected with single phase bridge type rectifier circu after step-down transformer, after single phase bridge type rectifier circu, alternating current changes DC current into, enters the first filter capacitor filtering.
3. a kind of gas leakage power supply smart controller according to claim 2, is characterized in that: described step-down transformer adopts the step-down transformer of AC220 V/ACl2 V.
4. a kind of gas leakage power supply smart controller according to claim 1, it is characterized in that: described mu balanced circuit adopts three terminal regulator, three terminal regulator is connected with the direct-flow positive voltage output terminal of single phase bridge type rectifier circu and one end of the first filter capacitor, the filtered electric current input of the first filter capacitor three terminal regulator 1 pin, export the DC voltage of 8V at the second filter capacitor two ends through the DC voltage of three terminal regulator stable output, for subsequent conditioning circuit provides direct supply.
5. a kind of gas leakage power supply smart controller according to claim 4, is characterized in that: described three terminal regulator adopts three terminal integrated voltage stabilizer LM7808.
6. a kind of gas leakage power supply smart controller according to claim 1, it is characterized in that: described sensor and setting voltage circuit comprise detection potential circuit and setting voltage circuit, detect potential circuit and comprise resistance R 0, gas sensor, resistance R 1 and resistance R 2, setting voltage circuit comprises resistance R 3, resistance R 4, resistance R 5 and thermistor RT; The signal input part of resistance R 0 and gas sensor i.e. 1 end is connected, the power end of gas sensor i.e. 4 ends is in series with resistance R 3, resistance R 4 and R5 successively, the signal output part of gas sensor i.e. 2 ends is in series with resistance R 1 and R2 successively, in resistance R 1 and resistance R 2, be parallel with capacitor C 2, shunt capacitance C3 in resistance R 5, thermistor RT and resistance R 3 are in parallel.
7. a kind of gas leakage power supply smart controller according to claim 6, it is characterized in that: described resistance R 2 adopts slide rheostat, described thermistor RT role is that circuit compensates, and the impact of compensation temperature on sensor characteristic obtains higher precision simultaneously.
8. a kind of gas leakage power supply smart controller according to claim 6, is characterized in that: described test section circuit output voltage enters comparator circuit, and reference voltage is made up of resistance R 3, resistance R 4, resistance R 5 and thermistor RT; Described comparator circuit comprises voltage comparator, resistance R 6, resistance R 7 and resistance R 8, one end of resistance R 6 is connected with the in-phase input end of voltage comparator, the other end of resistance R 6 is connected with the output terminal of voltage comparator, resistance R 7 and resistance R 8 are serially connected in the output terminal of voltage comparator, resistance R 6, resistance R 7 and resistance R 8, as auxiliary resistance, are used for guaranteeing the stability of voltage comparator output.
9. a kind of gas leakage power supply smart controller according to claim 1, is characterized in that: described relay drive circuit comprises that LED luminotron, phase inverter, relay drive chip and relay coil; The input end of phase inverter is connected with resistance R 8, and the output terminal of phase inverter drives chip to be connected with relay; One end of LED luminotron is connected with resistance R 8, and the other end of LED luminotron drives chip to be connected with relay, and relay coil drives chip to be connected with relay.
10. a kind of gas leakage power supply smart controller according to claim 1, it is characterized in that: described power-off ventilation warning executive circuit comprises alarm and exhaust fan, alarm and exhaust fan are serially connected in 220V AC power one side, and are connected with the normally opened contact of relay coil.
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| CN201410159216.2A CN103901868A (en) | 2014-04-21 | 2014-04-21 | Intelligent controller for gas leakage power supply |
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| CN201410159216.2A CN103901868A (en) | 2014-04-21 | 2014-04-21 | Intelligent controller for gas leakage power supply |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881965A (en) * | 2015-05-05 | 2015-09-02 | 浙江兰特电器有限公司 | Household automatic alarm and exhaust system |
| CN105066461A (en) * | 2015-09-09 | 2015-11-18 | 深圳市福田区青少年科技教育协会 | Water heater gas leakage protection system and device thereof |
| CN105674575A (en) * | 2016-03-09 | 2016-06-15 | 浙江大学 | Gas water heater capable of detecting CO concentration |
| CN106205065A (en) * | 2016-09-13 | 2016-12-07 | 武汉百络优物联科技有限公司 | Switching value alarm |
| CN106402947A (en) * | 2016-11-25 | 2017-02-15 | 上海应用技术大学 | Intelligent gas leakage safety protection device |
| CN106652363A (en) * | 2016-11-15 | 2017-05-10 | 郑州单点科技软件有限公司 | Combustion gas leakage intelligent processing system based on Internet of things |
| CN107748186A (en) * | 2017-11-22 | 2018-03-02 | 河南师范大学 | For monitoring the monitoring system of kitchen natural gas |
| CN108320466A (en) * | 2018-03-26 | 2018-07-24 | 广东先凯智能科技有限公司 | Detection process system in a kind of intelligence control formula room of alarm |
| CN109308015A (en) * | 2018-10-19 | 2019-02-05 | 金碧地智能科技（珠海）有限公司 | A kind of smart home central control machine device people based on Internet of Things |
| CN111564024A (en) * | 2020-05-25 | 2020-08-21 | 安徽复盛信息科技有限公司 | Automatic protection method and system based on dangerous gas monitoring alarm |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881965A (en) * | 2015-05-05 | 2015-09-02 | 浙江兰特电器有限公司 | Household automatic alarm and exhaust system |
| CN105066461A (en) * | 2015-09-09 | 2015-11-18 | 深圳市福田区青少年科技教育协会 | Water heater gas leakage protection system and device thereof |
| CN105674575A (en) * | 2016-03-09 | 2016-06-15 | 浙江大学 | Gas water heater capable of detecting CO concentration |
| CN106205065A (en) * | 2016-09-13 | 2016-12-07 | 武汉百络优物联科技有限公司 | Switching value alarm |
| CN106652363A (en) * | 2016-11-15 | 2017-05-10 | 郑州单点科技软件有限公司 | Combustion gas leakage intelligent processing system based on Internet of things |
| CN106402947A (en) * | 2016-11-25 | 2017-02-15 | 上海应用技术大学 | Intelligent gas leakage safety protection device |
| CN107748186A (en) * | 2017-11-22 | 2018-03-02 | 河南师范大学 | For monitoring the monitoring system of kitchen natural gas |
| CN108320466A (en) * | 2018-03-26 | 2018-07-24 | 广东先凯智能科技有限公司 | Detection process system in a kind of intelligence control formula room of alarm |
| CN109308015A (en) * | 2018-10-19 | 2019-02-05 | 金碧地智能科技（珠海）有限公司 | A kind of smart home central control machine device people based on Internet of Things |
| CN111564024A (en) * | 2020-05-25 | 2020-08-21 | 安徽复盛信息科技有限公司 | Automatic protection method and system based on dangerous gas monitoring alarm |
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Inventor after: Qiao Wei Inventor after: Jin Xianghong Inventor after: Yang Xiaoping Inventor after: Joe Weijin Hunan Hong Yang Xiaoping Hua Xufen Inventor before: Yang Xiaoping Inventor before: Jin Xianghong Inventor before: Qiao Wei Inventor before: Yang Xiaoping, Jin Xianghong, Qiao Weihua, Xu Fen |
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Application publication date: 20140702 |