CN111932840A - Intelligent gas alarm device capable of automatically treating gas leakage - Google Patents
Intelligent gas alarm device capable of automatically treating gas leakage Download PDFInfo
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- CN111932840A CN111932840A CN202010970748.XA CN202010970748A CN111932840A CN 111932840 A CN111932840 A CN 111932840A CN 202010970748 A CN202010970748 A CN 202010970748A CN 111932840 A CN111932840 A CN 111932840A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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- 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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
An intelligent gas alarm device comprises a control system, a power supply system, a display system, a linkage system, an alarm system and a communication system, wherein the control system is connected with the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system and is used for controlling the whole intelligent gas alarm device; the detection system is connected with the control system and sends the detected gas concentration value to the control system; the power supply system is used for providing power supply for the whole intelligent gas alarm device; the display system comprises a status indicator lamp and a liquid crystal display screen; the linkage system is connected with the power supply system and the control system and opens a window, closes a gas electromagnetic valve or closes an air switch according to the instruction of the control system and the requirement; the alarm system comprises an LED flashing lamp, a buzzer and a voice alarm; and the communication system is used for enabling the intelligent gas alarm device to have a wireless communication function.
Description
Technical Field
The invention relates to the technical field of natural gas alarming, in particular to an intelligent natural gas alarming device capable of automatically processing gas leakage.
Background
Along with the improvement of the living standard of people, the gas is more and more applied to life. The popularization of the fuel gas improves the production efficiency and the life quality of citizens. However, in the use process of the gas, accidents such as fire, explosion and poisoning are caused by gas leakage, which brings serious threats to the safety of life and property of people, so that the safe use of the gas is always the most important in the gas application.
The natural gas component is primarily methane, with small amounts of ethane, propane, butane and other small amounts of gases. Natural gas itself is colorless tasteless, and density is less than the air, takes place to reveal and can upwards run. The gas alarm is arranged above the gas pipeline at a certain distance, detects the gas concentration in the environment through the gas sensor, and sends out an alarm signal when the gas concentration exceeds a certain threshold value, so that a user is reminded to close the valve to prevent the gas from continuously leaking, open a window and the like to reduce the gas concentration, and the safety precaution effect is achieved. The gas alarm is very important gas safety equipment, is important and necessary protection for safely using gas, and is widely applied to various fields such as families, schools, factories, city security, petrochemical industry and the like.
The existing gas alarm has various styles, and has the main function of detecting the gas concentration, and when the gas concentration exceeds a certain threshold value, an alarm signal is sent out to remind a user to open a window or close a gas valve and the like. However, at present, the urban life rhythm is fast, users going out to work may not receive the on-site alarm signal sent by the gas alarm in time, and the elderly living alone in the city with the accelerated aging risk of insufficient emergency treatment capability. In addition, a certain dangerous gas concentration threshold value is preset in the existing gas alarm, when the detected gas concentration exceeds the threshold value, a dangerous alarm state can be entered, the nuisance caused by false alarm to the user exists, and the sudden high-decibel alarm sound can also cause the excessive scaring of personnel.
In carrying out the present invention, the applicant has found that the following problems exist in the prior art:
1) a certain dangerous gas concentration threshold value is preset in the existing gas alarm, when the detected gas concentration exceeds the threshold value, the existing gas alarm can suddenly enter a dangerous alarm state, the defect that the gas leakage judgment concentration threshold value is single exists, and intelligent staged processing can not be carried out according to the change of the gas concentration. Moreover, a sudden high decibel of the danger warning sound may cause the user to become panicked, especially frightened for the elderly or children. In addition, a suspected false leakage alarm caused by interference gas and the like cannot be eliminated by fixing a gas threshold, inconvenience and disturbance are brought to the use of a user by a corresponding gas source cutting device and a remote alarm, and unnecessary workload is inevitably added to relevant departments by sending an alarm signal to the departments of natural gas maintenance, fire fighting and the like when the false alarm is given;
2) the existing gas alarm only comprises one gas sensor, and has the defect that the function of the gas alarm fails after the sensor fails;
3) when the gas leakage is not solved in time, the gas alarm does not have an automatic shutdown function, and the risk of fire caused by electric sparks caused by alarm action may exist.
Disclosure of Invention
In view of the above, the present invention is directed to an intelligent natural gas alarm device capable of automatically handling gas leakage, so as to partially solve at least one of the above technical problems.
In order to achieve the above object, as an aspect of the present invention, there is provided an intelligent natural gas alarm device, including a control system, a detection system, a power supply system, a display system, a linkage system, an alarm system, and a communication system;
the control system is connected with the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system and is used for controlling the whole intelligent gas alarm device;
the detection system adopts two or more gas sensors which are arranged in parallel to ensure that the alarm device continues to work after one of the sensors fails; the gas concentration detection device is used for detecting the gas concentration, is connected with the control system and sends the detected gas concentration value to the control system;
the power supply system is connected with the control system, the monitoring system, the display system, the linkage system, the alarm system and the communication system, and can convert 220V alternating current into low-voltage direct current by adopting an alternating current to direct current (AC/DC) module for supplying power to the whole intelligent gas alarm device; meanwhile, the power supply system comprises a rechargeable lithium battery for supplying power to the outdoor alarm system;
the display system comprises a status indicator lamp and a liquid crystal display screen, the status indicator lamp can correspond different fuel gas working states to different indicator lamp colors according to instructions of the control system, and the liquid crystal display screen is used for displaying fuel gas concentration values and fuel gas use states; the display system is connected with the power supply system and the control system and is controlled by the instruction of the control system;
the linkage system is connected with the power supply system and the control system and opens a window, closes a gas electromagnetic valve or closes an air switch according to the instruction of the control system and the requirement;
the alarm system comprises an LED flashing lamp, a buzzer and a voice alarm, wherein the buzzer and the voice alarm can adjust the volume according to the gas concentration, the volume of medium and low decibels is adopted in a suspected leakage stage, and the volume alarm sound of high decibels is adopted in a leakage stage and a dangerous stage; the alarm system comprises an indoor alarm device and an outdoor alarm device, and the intelligent gas alarm device can selectively turn on the indoor alarm device or the outdoor alarm device according to the change of the gas concentration.
And the communication system is used for enabling the intelligent gas alarm device to have a wireless communication function.
The control system can set a plurality of gas concentration threshold values, the gas concentration value obtained by the detection system is compared with the threshold values, so that the gas use state is divided into four stages, namely a normal state, suspected leakage, gas leakage and danger, and then the corresponding control instruction is sent to other component systems.
Wherein, the normal state refers to the gas concentration x being less than or equal to the first threshold value x1And in a normal state, the alarm system does not give an alarm, the state indicator lamp of the display system indicates a normal state, and the liquid crystal display screen of the display system displays normal and displays the current gas concentration.
Wherein, theThe suspected leakage refers to the fact that the concentration x of the fuel gas is larger than a first fuel gas threshold value x1And not more than a second gas threshold x2I.e. x1＜x≤x2(ii) a Under the condition of suspected leakage, the control system controls a corresponding suspected leakage indicator lamp in the display system to be on, and a display screen of the display system displays the suspected leakage; the control system controls the indoor alarm system to send out sound and light alarms, wherein the volume of the buzzing sound and the volume of the voice alarms are normal volume, so that the personnel are prevented from being scared due to sudden loud alarms; the control system controls the communication system to send alarm information to terminals such as a user mobile phone or a computer and the like to remind a user of suspected leakage; the control system controls the linkage system to open the window so as to discharge the gas out of the window.
In the case where the suspected leakage is caused by interference of volatile gas contained in seasonings such as vinegar and cooking wine in the kitchen with the gas sensor, the gas concentration can be reduced in a short time by opening the window or opening the exhaust fan only when an alarm is given without closing the solenoid valve.
In the suspected leakage or initial stage of gas leakage, in this case, when the user finds the alarm and processes the alarm in time, the gas concentration is reduced to a normal state and the gas leakage in a strict sense is not formed, the gas alarm stops the alarm; when the user does not process in time and the gas concentration continues to rise to the gas leakage stage, the alarm processes according to the gas leakage.
Wherein, the gas leakage means that the gas concentration x is greater than a second gas threshold value x2And is not greater than a third gas threshold value x3I.e. x2＜x≤x3(ii) a Under the condition, the control system controls the corresponding gas leakage indicator lamp in the display system to be on, and the display screen of the display system displays the gas leakage; the control system controls the indoor alarm system to give out sound and light alarm, the buzzer is changed into high-decibel alarm sound, and the light alarm signal is increased; the control system controls the communication system to send alarm information to terminals such as a user mobile phone or a computer to remind a user of the existence of a gas leakage problem, and also sends the alarm information to community property to attract property attention, so that the property is timely paid attentionThe problem of gas leakage is solved and assisted; the control system controls the linkage system to continuously open the window and close the gas electromagnetic valve so as to reduce the gas concentration.
If the gas leakage is caused by the fact that the gas stove is extinguished or gas is forgotten to be closed, the gas concentration can be reduced to a normal range through the operation of opening the window and closing the electromagnetic valve; if the gas leaks due to pipeline corrosion or damage and air leakage of a valve, a connector and the like, the gas concentration is not reduced by closing the electromagnetic valve and opening the window, and the gas concentration continuously rises to a dangerous stage.
Wherein, the danger means that the gas concentration x is greater than a third gas threshold value x3I.e. x > x3Under the condition, the control system closes the indoor alarm system, prevents fire caused by the operation of indoor alarm, opens the outdoor alarm system to send out sound and light alarm, changes the buzzing sound into high-decibel alarm sound, increases the light alarm signal, and adopts the rechargeable lithium battery to supply power for the outdoor alarm system; the control system controls the communication system, the danger alarm is sent to the user mobile phone, the community property and the gas company, and then the communication system is closed, so that the community property and the gas company can reduce the probability of danger caused by gas leakage in time through measures such as closing a household gas valve and the like; the control system controls the linkage system to open a window, close the electromagnetic valve and close the air switch, closes the indoor power supply to prevent fire caused by electric sparks generated by the work of the electric appliance, closes the control system, the detection system, the power supply system, the display system, the linkage system, the indoor alarm system and the communication system of the indoor work, and only keeps the outdoor alarm system to send out outdoor sound and light alarm by adopting the storage battery.
The control system adopts an ARM microprocessor, an IVB processor or a singlechip; and/or
The gas sensor adopts a methane sensor, a carbon monoxide sensor, an ethane sensor, a propane sensor or a butane sensor; and/or
The power supply system adopts an AC-to-DC module to convert 220V AC power into low-voltage DC power; and/or
The communication system adopts a WIFI module, a Zigbee module, Bluetooth communication or GPRS communication.
Based on the technical scheme, compared with the prior art, the intelligent natural gas alarm device capable of automatically processing gas leakage at least has one or part of the following beneficial effects:
1. the control system of the intelligent gas alarm system can automatically process the gas leakage problem, the control system of the intelligent gas alarm system automatically processes the gas leakage problem according to different gas use states by comparing and analyzing the gas concentration measured by the detection system with a plurality of preset gas concentration threshold values and dividing the gas use states into different stages, so that the suspected leakage problem caused by interference gas and the gas leakage stage are processed in a distinguishing way, and users, community properties and gas companies are reminded in stages to effectively prevent the disturbance brought to the users and related departments when the suspected leakage problem is not distinguished.
2. The detection system of the intelligent gas alarm system capable of automatically processing gas leakage adopts two or more gas sensors which are arranged in parallel to ensure that the alarm system continues to work after one sensor fails, thereby effectively solving the problem that the alarm system cannot work when the gas sensor is damaged.
3. The intelligent gas alarm system capable of automatically processing gas leakage closes the air switch after giving out an alarm and a remote communication alarm in a dangerous stage, closes the household appliance, effectively prevents the risk of fire caused by electric sparks possibly caused by the household appliance, only keeps the outdoor alarm system to adopt the rechargeable storage battery to give out outdoor acousto-optic alarm, and closes the control system, the detection system, the power supply system, the display system, the linkage system, the indoor alarm system and the communication system which work indoors.
4. The intelligent natural gas alarm capable of automatically processing gas leakage has the functions of realizing on-site and remote multiple gas alarm, automatically processing gas leakage and the like. The invention has complete functions, can effectively treat the potential safety hazard of gas use in all directions and at multiple angles, and ensures the safe use of the gas.
Drawings
FIG. 1 is a schematic structural diagram of an intelligent gas alarm provided by an embodiment of the invention;
FIG. 2 is a schematic connection diagram of an intelligent gas alarm system provided by the embodiment of the invention;
fig. 3 is a schematic view of a staged alarm of the intelligent gas alarm system provided by the embodiment of the invention.
Detailed Description
The invention discloses an intelligent gas alarm system capable of automatically processing gas leakage, which can eliminate suspected gas leakage according to gas concentration so as to reduce unnecessary disturbance to a user, control a linkage system to process the gas leakage problem, and effectively reduce the failure of a gas alarm caused by sensor faults by connecting two or more gas sensors in parallel. The intelligent gas alarm system has a field alarm function and a remote alarm function, can realize real-time monitoring of a user on the gas use state through the communication system, and remotely sends alarm signals to the user, a community and a gas company as required.
Specifically, the intelligent gas alarm system capable of automatically processing gas leakage comprises a control system, a detection system, a power supply system, a display system, a linkage system, an alarm system and a communication system.
The control system is a control unit of the gas alarm system, and can adopt an ARM microprocessor, an IVB processor, a singlechip and the like; the control system is connected with the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system.
The detection system is provided with a gas sensor for detecting the gas concentration, is connected with the control system and sends the detected gas concentration value to the control system. The detection system adopts two or more gas sensors which are arranged in parallel to ensure that the alarm continues to work after one of the sensors fails; the gas sensor may comprise a methane sensor, a carbon monoxide sensor, an ethane sensor, a propane sensor, a butane sensor. The gas sensor may be selected from a catalytic combustion type, an oxide semiconductor type, a hot-wire gas sensor, or other type of gas sensor.
The power supply system provides power for the gas alarm, the power supply system adopts an AC-to-DC AC/DC module which can convert 220V AC power into low-voltage DC power and is connected with the control system, the monitoring system, the display system, the linkage system, the alarm system and the communication system; the power supply system includes a rechargeable lithium battery to provide power to the outdoor alarm system.
The display system comprises a status indicator lamp and a liquid crystal display screen, the status indicator lamp can correspond different indicator lamp colors to different gas working states according to instructions of the control system, and the liquid crystal display screen can be used for displaying a gas concentration value and a gas use state. The display system is connected with the power supply system and the control system and is controlled by the instruction of the control system.
The linkage system can be connected with the window, the gas electromagnetic valve and the air switch through the driving device, is connected with the power system and the control system, and can open the window, close the gas electromagnetic valve or close the air switch according to the instruction of the control system.
The alarm system comprises an LED flashing lamp, a buzzer and a voice alarm, wherein the buzzer and the voice alarm can adjust the volume according to the gas concentration, the volume of medium and low decibels is adopted in a suspected leakage stage, the high decibel alarm sound is adopted in the leakage stage, and the content user playing the voice alarm can set the volume by himself. The alarm system comprises an indoor alarm device and an outdoor alarm device, and the intelligent gas alarm device can selectively turn on the indoor alarm device or the outdoor alarm device according to the change of the gas concentration.
The communication system enables the gas alarm to have a wireless communication function, and the working state of the alarm and the alarm signal can be sent to the mobile terminal through wireless transmission, wherein the mobile terminal comprises a user mobile phone or a computer, a community property terminal and a mobile terminal of a gas company. The communication system is connected to the control system so that the control system performs transmission and reception of wireless communication. The communication system can adopt a WIFI module, a Zigbee module, Bluetooth communication or GPRS communication. The mobile terminal connected with the communication system can be provided with a data storage unit for storing transmitted historical data so as to further expand additional functions of the mobile terminal, including viewing of the historical data by a user, analysis and alarm rate and alarm time period of communities and gas companies, and the like.
The control system of the intelligent gas alarm system capable of automatically processing gas leakage can set a plurality of gas concentration threshold values, the gas concentration value obtained by the detection system is compared with the threshold values, so that the gas use state is divided into four stages, namely a normal state, suspected leakage, gas leakage and danger, and then the corresponding control instruction is sent to other component systems.
Stage 1 is a normal state of the gas, and the concentration x of the gas is less than or equal to a first threshold value x1. At the moment, the gas alarm system does not give an alarm, the state indicator lamp of the display system indicates a normal state, and the liquid crystal display screen of the display system displays the normal state and displays the current gas concentration.
The 2 nd stage is suspected gas leakage, and the gas concentration x is greater than the first gas threshold value x at the moment1And less than a second gas threshold x2I.e. x1＜x≤x2. At the moment, the control system controls a corresponding suspected leakage indicator lamp in the display system to be on, and a display screen of the display system displays suspected leakage; the control system controls the indoor alarm system to send out sound and light alarms, wherein the volume of the buzzing sound and the volume of the voice alarms are normal volume, so that the personnel are prevented from being frightened due to sudden loud alarms; thirdly, the control system controls the communication system to send alarm information to terminals such as a user mobile phone or a computer and the like to remind the user of suspected leakage; and fourthly, the control system controls the linkage system to open the window so as to discharge the gas out of the window.
It should be noted that the gas concentration in stage 2 may be caused by interference of volatile gas contained in seasonings such as vinegar or cooking wine during cooking in a kitchen to the gas sensor, and in this case, the user generally does not need to close the solenoid valve on site, and only needs to open the window to timely reduce the gas concentration in a short time when an alarm is given.
The stage 2 can also be the initial stage of gas leakage, and the purpose of the stage 2 is to distinguish the gas leakage phenomenon in the stage from the gas leakage phenomenon in the stage 3 during alarming, so as to prevent the disturbance of false alarm to the user. If the gas leakage is in the initial stage, when the user finds that the gas concentration is reduced to the normal state after the alarm is timely processed, the gas leakage does not form strict gas leakage, and the gas alarm stops the alarm; when the user does not process in time and the gas concentration continues to rise to the 3 rd stage, the alarm processes the gas leakage according to the 3 rd stage.
The 3 rd stage is a gas leakage stage, and the gas concentration x is greater than a second gas threshold value x2And is not greater than a third gas threshold value x3I.e. x2＜x≤x3. At the moment, the control system controls a corresponding gas leakage indicator lamp in the display system to be on, and a display screen of the display system displays gas leakage; secondly, the control system controls the indoor alarm system to give out sound and light alarm, the buzzer is changed into high-decibel alarm sound, and the light alarm signal is increased; the control system controls the communication system to send alarm information to a user mobile phone or a computer and other terminals to remind a user of the existence of a gas leakage problem, and also sends the alarm information to community property to attract property attention so that the property can know the gas leakage problem in time and assist in solving the problem; and fourthly, the control system controls the linkage system to continuously open the window and close the gas electromagnetic valve so as to reduce the gas concentration.
In general, in the gas leakage stage, if the gas leakage is caused by the fact that the gas stove is extinguished or the gas is forgotten to be closed, the gas concentration can be reduced to a normal range through the operation of opening a window and closing an electromagnetic valve. However, if the gas leaks due to corrosion of the pipeline, damage of the valve, damage of the interface, gas leakage and the like, the gas concentration cannot be reduced by closing the electromagnetic valve and opening the window, and the gas concentration continuously rises to the 4 th stage.
The 4 th stage is a gas leakage dangerous stage, and the gas concentration x is greater than a third gas threshold value x3. I.e. x > x3. At the moment, the control system closes the indoor alarm system to prevent electric sparks caused by the operation of sound and light alarm; starting the outdoor alarm system to give out sound and light alarm, changing the buzzer sound into high decibel alarm sound, increasing the light alarm signal,the outdoor alarm system adopts a rechargeable lithium battery for power supply; and secondly, the control system controls the communication system, the danger alarm is sent to the user mobile phone, the community property and the gas company, and then the communication system is closed, so that the community property and the gas company can reduce the probability of danger caused by gas leakage in time through measures such as closing a gas valve entering the household and the like. The control system controls the linkage system to close the air switch, an indoor power supply is closed to prevent fire caused by electric sparks generated by the work of the electric appliance, the control system, the detection system, the power supply system, the display system, the linkage system, the indoor alarm system and the communication system for indoor work are closed, and only the outdoor alarm system is reserved and the storage battery is adopted to send out outdoor sound and light alarm.
In the use process of the intelligent gas alarm system, community property and gas companies can establish user use condition accounts according to alarm information of an alarm, timely know the gas use condition of each user, pay key attention to users who often send gas alarms, and can also develop related training of gas safe use for the users.
It should be noted that the control system, the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system in the intelligent gas alarm system capable of automatically processing gas leakage can be deleted and reduced as required, for example, the display system can only contain a status indicator lamp without using a liquid crystal display for saving cost, and for example, the communication system only informs users and communities but does not directly communicate with gas companies.
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
As shown in fig. 1, the intelligent gas alarm system capable of automatically handling gas leakage according to the present invention includes a control system, a detection system, a power supply system, a display system, a linkage system, an alarm system, and a communication system.
The control system is a control unit of the gas alarm system, and can adopt an ARM microprocessor, an IVB processor, a singlechip and the like; the control system is connected with the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system. As shown in fig. 2, the control system is connected with a window, an electromagnetic valve and an air switch through a linkage system, and is connected with users, community property and gas companies through a communication system.
The detection system is provided with a gas sensor for detecting the gas concentration, is connected with the control system and sends the detected gas concentration value to the control system. The detection system adopts two gas sensors connected in parallel to ensure that the alarm continues to work after one of the sensors fails; the gas sensor may comprise a methane sensor, a carbon monoxide sensor, an ethane sensor, a propane sensor, a butane sensor. The gas sensor may be selected from a catalytic combustion type, an oxide semiconductor type, a hot-wire gas sensor, or other type of gas sensor.
The power supply system supplies power to the gas alarm, can convert 220V power into low-voltage direct current by adopting an alternating current-to-direct current (AC/DC) module and is connected with the control system, the monitoring system, the display system, the linkage system, the alarm system and the communication system; the power supply system includes a rechargeable lithium battery to provide power to the outdoor alarm system.
The display system comprises a status indicator lamp and a liquid crystal display screen, the status indicator lamp can correspond different indicator lamp colors to different gas working states according to instructions of the control system, and the liquid crystal display screen can be used for displaying a gas concentration value and a gas use state. The display system is connected with the power supply system and the control system and is controlled by the instruction of the control system.
The linkage system can control the window switch, the gas electromagnetic valve and the air switch, is connected with the power supply system and the control system, and can open the window, close the gas electromagnetic valve or close the air switch according to the instruction of the control system.
Alarm system include LED flashing light, bee calling organ and voice alarm, wherein bee calling organ and voice alarm can be according to gas concentration adjustment volume, adopt the volume of well low decibel in the suspected leakage stage, adopt high decibel alarm sound in the leakage stage, the content user of voice alarm broadcast can set for by oneself, alarm system includes indoor alarm device and outdoor alarm device, intelligent gas alarm device can select to open indoor alarm device and outdoor alarm device according to the gas concentration change.
The communication system enables the gas alarm to have a wireless communication function, and the working state of the alarm and the alarm signal can be sent to the mobile terminal through wireless transmission, wherein the mobile terminal comprises a user mobile phone or a computer, a community property terminal and a mobile terminal of a gas company. The communication system is connected to the control system so that the control system performs transmission and reception of wireless communication. The communication system can adopt a WIFI module, a Zigbee module, Bluetooth communication or GPRS communication. The mobile terminal connected with the communication system can be provided with a data storage unit for storing transmitted historical data so as to further expand additional functions of the mobile terminal, including viewing of the historical data by a user, analysis and alarm rate and alarm time period of communities and gas companies, and the like.
As shown in FIG. 3, the control system sets three different gas concentration thresholds x1、x2And x3The threshold value and the gas concentration value obtained by the detection system are compared and analyzed, so that the gas use state is divided into four stages of normal state, suspected leakage, gas leakage and danger, then the corresponding control instruction is sent to other component systems, and the instructions of different stage control systems to an alarm system, a linkage system and a communication system are shown in table 1. Wherein:
stage 1 is a normal state of the gas, and the concentration x of the gas is less than or equal to a first threshold value x1I.e. x ≦ x1. At the moment, the gas alarm system does not give an alarm, the state indicator lamp of the display system indicates the normal state, and the liquid crystal display screen of the display system and the user mobile terminal of the communication system display 'normal' and display the current gas concentration.
The 2 nd stage is suspected gas leakage, and the gas concentration x is greater than the first gas threshold value x at the moment1And not more than a second gas threshold x2I.e. x1＜x≤x2. At the moment, the control system controls the corresponding suspected leakage indicator lamp in the display system to be on, and the display screen of the display system displays suspected leakageLeaking; the control system controls the indoor alarm system to send out sound and light alarms, wherein the volume of the buzzing sound and the volume of the voice alarms are normal volume, so that the personnel are prevented from being frightened due to sudden loud alarms; thirdly, the control system controls the communication system to send alarm information to terminals such as a user mobile phone or a computer and the like to remind the user of suspected leakage; and fourthly, the control system controls the linkage system to open the window so as to discharge the gas out of the window.
The 3 rd stage is a gas leakage stage, and the gas concentration x is greater than a second gas threshold value x2And is not greater than a third gas threshold value x3I.e. x2＜x≤x3. At the moment, the control system controls a corresponding gas leakage indicator lamp in the display system to be on, and a display screen of the display system displays gas leakage; secondly, the control system controls the indoor alarm system to give out sound and light alarm, the buzzer is changed into high-decibel alarm sound, and the light alarm signal is increased; the control system controls the communication system to send alarm information to a user mobile phone or a computer and other terminals to remind a user of the existence of a gas leakage problem, and also sends the alarm information to community property to attract property attention so that the property can know the gas leakage problem in time and assist in solving the problem; and fourthly, the control system controls the linkage system to continuously open the window and close the gas electromagnetic valve so as to reduce the gas concentration.
The 4 th stage is a gas leakage dangerous stage, and the gas concentration x is greater than a third gas threshold value x3. I.e. x > x3. At the moment, the control system closes the indoor alarm system to prevent electric sparks caused by the operation of sound and light alarm; starting an outdoor alarm system to send out sound and light alarm, changing the buzzer into high-decibel alarm sound, increasing the light alarm signal, and supplying power to the outdoor alarm system by adopting a rechargeable lithium battery; and secondly, the control system controls the communication system, the danger alarm is sent to the user mobile phone, the community property and the gas company, and then the communication system is closed, so that the community property and the gas company can reduce the probability of danger caused by gas leakage in time through measures such as closing a gas valve entering the household and the like. The control system controls the linkage system to open a window and close an air switch, and an indoor power supply is closed to prevent fire caused by electric sparks generated by the work of an electric appliance; a control system for closing the intelligent gas alarm device,The system comprises a detection system, a power supply system, a display system, a linkage system, an indoor alarm system and a communication system, and only an outdoor alarm system is reserved, and a storage battery is adopted to send out outdoor sound and light alarm.
TABLE 1 introduction of control system staging instructions in the present invention
Note: "-" indicates that the function does not act at this stage, and "√" indicates that the function does act at this stage.
In the use process of the intelligent gas alarm system, community property and gas companies can establish user use condition accounts according to alarm information of an alarm, timely know the gas use condition of each user, pay key attention to users who often send gas alarms, and can also develop related training of gas safe use for the users.
Detailed description of the preferred embodiment 1
When a user cooks, volatile gas contained in condiments such as vinegar or cooking wine volatilizes, so that the gas concentration x detected by the gas sensor is greater than the first gas threshold value x1And not more than a second gas threshold x2At this time, the intelligent gas alarm system capable of automatically processing gas leakage considers that the gas is used as suspected leakage in stage 2.
At the moment, the control system controls a corresponding suspected leakage indicator lamp in the display system to be on, and a display screen of the display system displays suspected leakage; the control system controls the indoor alarm system to send out sound and light alarms, wherein the volume of the buzzing sound and the volume of the voice alarms are normal volume, so that the personnel are prevented from being frightened due to sudden loud alarms; and thirdly, the control system controls the communication system to send the alarm information to terminals such as a mobile phone or a computer of the user to remind the user of suspected leakage. At the moment, the alarm information is not sent to community property and gas companies so as to avoid unnecessary disturbance to related departments. And fourthly, the control system controls the linkage system to open the window so as to discharge the gas out of the window.
When a user cooks in a gas use site, the alarm system can reduce the gas concentration to a normal state in time by windowing or carrying out manual windowing treatment after the user receives the alarm of the alarm system.
Specific example 2
The gas stove is forgotten to be closed when a user cooks, so that gas leakage is caused. The gas concentration caused by gas leakage is gradually increased, and when the gas concentration x is in the 2 nd stage in the initial stage, the gas alarm system performs actions such as alarming, windowing, communication prompting and the like according to the processing mode of the 2 nd stage. If the user closes the gas stove after receiving the alarm signal at the moment, the gas concentration is not increased any more and gradually decreases to a normal state; if the user does not receive the alarm signal or does not work at home, the gas concentration continues to increase to the 3 rd stage, and the gas alarm system performs actions such as alarming, windowing, closing a battery valve and the like according to the processing mode of the 3 rd stage. Generally, the gas concentration of the gas leaked by forgetting to close the gas stove is gradually reduced after the gas is processed in the 3 rd stage and finally reaches a normal state, so that the gas company is not required to be prompted in the stage through a communication system, community property can be prompted to know the daily use condition of the user, and the user who frequently gives out the alarm (such as the elderly living alone) is paid special attention.
Specific example 3
The gas concentration value x obtained by the detection system of the intelligent gas alarm system can be gradually increased from a normal state to x > x after 2-stage suspected leakage and 3-stage gas leakage due to gas leakage caused by pipeline corrosion, old valve or damaged interface and other reasons3In the 4 th stage dangerous stage, the gas alarm system processes according to the 2 nd stage and the 3 rd stage and the 4 th stage processing mode. Finally, the control system closes the indoor alarm system to prevent electric sparks caused by the operation of indoor sound-light alarm; starting an outdoor alarm system to send out sound and light alarm, changing the buzzer into high-decibel alarm sound, and increasing the light alarm signal; secondly, the control system controls the communication system, sends the danger alarm to the user mobile phone, the community property and the gas company and then closes the communication system, and the community property and the gas company can pass through the closing in timeMeasures such as closing a household gas valve and the like reduce the probability of danger caused by gas leakage. And the control system controls the linkage system to open the window, close the electromagnetic valve and close the air switch, an indoor power supply is closed to prevent fire caused by electric sparks generated by the work of an electric appliance, and only the outdoor alarm system is reserved to send out outdoor sound and light alarm by adopting the storage battery.
It should be noted that the control system, the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system in the intelligent gas alarm system capable of automatically processing gas leakage can be deleted according to the needs, for example, the display system can only adopt a status indicator lamp without using a liquid crystal display screen for saving the cost, and for example, the communication system only informs users and communities but not directly communicates with gas companies.
The user can require according to different work occasions to gas concentration threshold value x in the control system of intelligent gas alarm system that can automatically handle gas leakage1，x2And x3The modification is carried out, and two fuel gas concentration threshold values x can be set optionally1And x2Therefore, the gas use stage is divided into a normal state, a suspected leakage stage and a leakage stage, namely, the 4 th stage in the figure 3 is cancelled, and the gas leakage caused by pipeline corrosion, old valves, interface damage and air leakage and the like is not considered. Under the condition, the beneficial effect of the invention on the staged treatment of the gas leakage is not influenced.
The control unit in the control system adopts an ARM microprocessor and an IVB processor, and can also be replaced by a singlechip and the like.
The communication system can adopt a WIFI module, a Zigbee module, a Bluetooth technology or GPRS communication.
The detection system can be provided with two or more gas sensors in parallel.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intelligent gas alarm device is characterized by comprising a control system, a detection system, a power supply system, a display system, a linkage system, an alarm system and a communication system;
the control system is connected with the detection system, the power supply system, the display system, the linkage system, the alarm system and the communication system and is used for controlling the whole intelligent gas alarm device;
the detection system adopts two or more gas sensors which are arranged in parallel to ensure that the alarm device continues to work after one of the sensors fails; the gas concentration detection device is used for detecting the gas concentration, is connected with the control system and sends the detected gas concentration value to the control system;
the power supply system is connected with the control system, the monitoring system, the display system, the linkage system, the alarm system and the communication system, and can convert 220V alternating current into low-voltage direct current by adopting an alternating current to direct current (AC/DC) module for supplying power to the whole intelligent gas alarm device; the power supply system comprises a rechargeable lithium battery for supplying power to the outdoor alarm system;
the display system comprises a status indicator lamp and a liquid crystal display screen, the status indicator lamp can correspond different fuel gas working states to different indicator lamp colors according to instructions of the control system, and the liquid crystal display screen is used for displaying fuel gas concentration values and fuel gas use states; the display system is connected with the power supply system and the control system and is controlled by the instruction of the control system;
the linkage system is connected with the power supply system and the control system and opens a window, closes a gas electromagnetic valve or closes an air switch according to the instruction of the control system and the requirement;
the alarm system comprises an LED flashing lamp, a buzzer and a voice alarm, wherein the buzzer and the voice alarm can adjust the volume according to the gas concentration, the volume of medium and low decibels is adopted in a suspected leakage stage, and the volume alarm sound of high decibels is adopted in a leakage stage and a dangerous stage; the alarm system comprises an indoor alarm device and an outdoor alarm device;
and the communication system is used for enabling the intelligent gas alarm device to have a wireless communication function.
2. The intelligent gas alarm device according to claim 1, wherein the control system is capable of setting a plurality of gas concentration threshold values, and comparing the gas concentration value obtained by the detection system with the plurality of threshold values, so as to divide the gas use state into four stages, namely a normal state, suspected leakage, gas leakage and danger, and then sending corresponding control instructions to other component systems.
3. The intelligent gas alarm device of claim 2, wherein the normal state refers to a gas concentration x being less than or equal to a first threshold value x1And in a normal state, the alarm system does not give an alarm, the state indicator lamp of the display system indicates a normal state, and the liquid crystal display screen of the display system displays normal and displays the current gas concentration.
4. The intelligent gas alarm device of claim 2, wherein the suspected leakage indicates that the gas concentration x is greater than a first gas threshold value x1And not more than a second gas threshold x2I.e. x1＜x≤x2(ii) a Under the condition of suspected leakage, the control system controls a corresponding suspected leakage indicator lamp in the display system to be on, and a display screen of the display system displays the suspected leakage; the control system controls the indoor alarm system to send out sound and light alarms, wherein the volume of the buzzing sound and the volume of the voice alarms are normal volume, so that the personnel are prevented from being scared due to sudden loud alarms; the control system controls the communication system to send alarm information to terminals such as a user mobile phone or a computer and the like to remind a user of suspected leakage; the control system controls the linkage system to open the window so as to discharge the gas out of the window.
5. The intelligent gas alarm device according to claim 4, wherein when the suspected leakage is caused by interference of volatile gas contained in seasonings such as vinegar or cooking wine in the kitchen with the gas sensor, the gas concentration can be timely reduced by performing windowing processing only when an alarm is given without closing the solenoid valve.
6. The intelligent gas alarm device according to claim 5, wherein the suspected leakage or the initial stage of gas leakage, in which case the gas alarm terminates the alarm when the user finds the alarm and timely processes the decrease of the gas concentration to the normal state, which does not constitute a strict gas leakage; when the user does not process in time and the gas concentration continues to rise to the gas leakage stage, the alarm processes according to the gas leakage.
7. The intelligent gas alarm device of claim 2, wherein the gas leakage indicates that gas concentration x is greater than a second gas threshold value x2And is not greater than a third gas threshold value x3I.e. x2＜x≤x3(ii) a Under the condition, the control system controls the corresponding gas leakage indicator lamp in the display system to be on, and the display screen of the display system displays the gas leakage; the control system controls the indoor alarm system to give out sound and light alarm, the buzzer is changed into high-decibel alarm sound, and the light alarm signal is increased; the control system controls the communication system to send alarm information to a user mobile phone or a computer or other terminals to remind a user of the existence of a gas leakage problem, and also sends the alarm information to community property to attract property attention so that the property can know the gas leakage problem in time and assist in solving the problem; the control system controls the linkage system to continuously open the window and close the gas electromagnetic valve so as to reduce the gas concentration.
8. The intelligent gas alarm device according to claim 2, wherein if the gas leakage is caused by the gas stove being extinguished or forgotten to be closed, the gas concentration can be reduced to a normal range by opening a window and closing an electromagnetic valve; if the gas leaks due to pipeline corrosion or damage and air leakage of a valve, a connector and the like, the gas concentration is not reduced by closing the electromagnetic valve and opening the window, and the gas concentration continuously rises to a dangerous stage.
9. The intelligent gas alarm device of claim 2, wherein the danger means that the gas concentration x is greater than a third gas threshold value x3I.e. x > x3In this case, the control system turns off the indoor alarm system to prevent a fire caused by the operation of the indoor alarm; and starting the outdoor alarm system, wherein the outdoor alarm system adopts a rechargeable lithium battery for power supply. The control system controls the communication system, the danger alarm is sent to the user mobile phone, the community property and the gas company, and then the communication system is closed, so that the community property and the gas company can reduce the probability of danger caused by gas leakage in time through measures such as closing a household gas valve and the like; the control system controls the linkage system to close the gas electromagnetic valve and the air switch, and closes the indoor power supply to prevent fire caused by electric sparks generated by the work of the electric appliance.
10. The intelligent gas alarm device of claim 1, wherein the control system employs an ARM microprocessor, an IVB processor, or a single-chip microcomputer; and/or
The gas sensor adopts a methane sensor, a carbon monoxide sensor, an ethane sensor, a propane sensor or a butane sensor; and/or
The power supply system adopts an AC-DC conversion module to convert 220V AC power into low-voltage DC power and comprises a rechargeable lithium battery for supplying power to the outdoor alarm system; and/or
The communication system adopts a WIFI module, a Zigbee module, Bluetooth communication or GPRS communication.
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