CN209297467U - A kind of combustion gas closing alarm set - Google Patents
A kind of combustion gas closing alarm set Download PDFInfo
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- CN209297467U CN209297467U CN201822234858.0U CN201822234858U CN209297467U CN 209297467 U CN209297467 U CN 209297467U CN 201822234858 U CN201822234858 U CN 201822234858U CN 209297467 U CN209297467 U CN 209297467U
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Abstract
The utility model relates to a kind of combustion gas to close alarm set, including shell, shell is arranged close on the gas pipeline of burnt gas valve, governor circuit, infrared receiving/transmission circuit, warning circuit and battery are equipped in shell, battery is electrically connected with governor circuit, and governor circuit is electrically connected with infrared receiving/transmission circuit and warning circuit respectively.Alarm set is closed in the combustion gas of the utility model, the metal disk on burnt gas valve is detected by infrared receiving/transmission circuit transmission and received infrared signal, the state of burnt gas valve is judged according to infrared signal by governor circuit, alarm signal is issued by governor circuit control warning circuit when activated, to remind user to go to actively close burnt gas valve, promote user to form good to be accustomed to gas, bring security risk is not turned off to eliminate burnt gas valve, avoid accident caused by gas leakage occurs, ensure the safety of life and property of people, structure is simple, it is easy for installation, it is at low cost, it is easy to spread.
Description
Technical field
The utility model relates to combustion gas field of security technology, alarm set is closed in especially a kind of combustion gas.
Background technique
With the development of society, the material and cultural life of people has obtained significant raising, in life of today,
Gas combustion apparatus is every household indispensability, such as gas-cooker, gas heater.Gas combustion apparatus is improved the people's livelihood condition as one kind
Residential energy sources equipment, no matter be all widely used in city or rural area.But during using combustion gas, because
Gas explosion caused by the reasons such as gas leakage exhaust gas, the contingencies such as poisoning happen occasionally, and give people's safety of life and property
Bring serious threat.And after having used these gas combustion apparatus, people (especially some the elderlys) tend to forget
(or ignorance) removes closing gas valve door, there is bigger security risk in this way, is unfavorable for combustion gas security protection.
The gas alarm device for having existed many types on the market at present, can assist the safety of raising gas.But
These gas alarm devices have the following deficiencies:
1, higher cost or installation are inconvenient, to limit their popularization；
2, the higher gas alarm device of some the degree of automation is able to detect that gas leakage, even after detecting gas leakage
Energy automatic self-closing gas, but if these devices itself break down, detection failure or closing function failure, user are often difficult
To perceive, so still have security risk；
3, these gas alarm devices can not remind user to actively close burnt gas valve, people can not be promoted to form good
Safety is accustomed to gas, so that security risk can not be effectively eliminated.
The use of combustion gas, it is safest still to remove to actively close burnt gas valve by user after use, and there is presently no
One kind can play safety prompt function, and functional reliability is high, alarm set is closed in simple combustion gas to structure again.
Utility model content
Technical problem to be solved in the utility model is in view of the above shortcomings of the prior art, to provide a kind of can remind and use
Householder moves simple closing gas valve door, structure, easy for installation, high reliablity and combustion gas at low cost and closes alarm set.
The technical solution that the utility model solves above-mentioned technical problem is as follows:
A kind of combustion gas closing alarm set, including shell, the shell are arranged close on the gas pipeline of burnt gas valve,
Governor circuit, infrared receiving/transmission circuit, warning circuit and battery are equipped in the shell, the battery is electrically connected with the governor circuit
It connects, the governor circuit is electrically connected with the infrared receiving/transmission circuit and the warning circuit respectively.
The beneficial effects of the utility model are: metal stamper of the burnt gas valve in closing and unlatching, in burnt gas valve handle
The position of piece can change, and detect burnt gas valve by the intracorporal infrared receiving/transmission circuit transmission of shell and received infrared signal
On metal disk, metal disk change in location, infrared signal also can accordingly change, by governor circuit according to different red
External signal judges, that is, can determine whether burnt gas valve is in close state, when being judged as open state, sent out by governor circuit
Alarm command control warning circuit issues alarm signal out, to remind user to go to actively close burnt gas valve.It is practical new by this
Alarm set is closed in the combustion gas of type, promote user form it is good be accustomed to gas, so that eliminating burnt gas valve is not turned off bring
Security risk avoids accident caused by gas leakage occurs, ensures the safety of life and property of people, and apparatus structure it is simple,
It is easy for installation, at low cost, it is easy to spread, combustion gas safety-security area can be widely used in；Wherein, infrared receiving/transmission circuit and warning circuit can
Directly to be powered by battery, can also be powered by governor circuit, depending on actual conditions.
Based on the above technical solution, the utility model can also do following improvement:
Further, the governor circuit includes microprocessor and clock sub-circuit, the microprocessor respectively with it is described when
Clock sub-circuit, the infrared receiving/transmission circuit, the warning circuit and battery electrical connection.
The beneficial effect of above-mentioned further scheme is: the clock signal issued by clock sub-circuit can facilitate microprocessor
It controls infrared receiving/transmission circuit and issues infrared signal according to preset frequency, convenient for infrared receiving/transmission circuit according to the infrared letter of the frequency
Number the open and close state of burnt gas valve is detected and monitored, avoids being not provided with clock signal and combustion gas being caused to be closed
Alarm set is constantly in detection and alert state, more meets real life needs, and practicability is higher, and can protect to a certain extent
Demonstrate,prove the service life that alarm set is closed in combustion gas；Wherein, clock sub-circuit and microprocessor can be discrete device, be also possible to
Integrated chip with the clock sub-circuit and microprocessor function.
Further, the governor circuit further includes reset subcircuit, the reset subcircuit is electrically connected with the microprocessor
It connects.
The beneficial effect of above-mentioned further scheme is: the reset signal issued by reset subcircuit, convenient to work as user's root
It is gone after actively closing burnt gas valve according to the prompting that alarm set is closed in combustion gas, makes the device again according to clock signal to gas valve
Door is detected and is reminded, and can also be alarmed by the of short duration releasing of reset signal, intelligent higher；Wherein reset subcircuit can root
It is designed according to actual conditions, for example, can be by the way of reset button.
Further, the governor circuit further includes preset duration sub-circuit, the preset duration sub-circuit and micro- place
Manage device electrical connection.
The beneficial effect of above-mentioned further scheme is: the combustion gas can be set by preset duration sub-circuit and close prompting dress
It sets after burnt gas valve opens use, infrared receiving/transmission circuit starts the first preset duration detected, and (i.e. clock sub-circuit starts to send out
Clock signal out, and by microprocessor issue pulse signal so that infrared receiving/transmission circuit begin to send out infrared signal it is default when
It is long), such as 30 minutes, it is intended that (refer to the duration needed for a meal using combustion gas) after burnt gas valve is opened 30 minutes and begins to send out
The clock signal of certain frequency, microprocessor, which issues pulse signal according to the clock signal, makes infrared receiving/transmission circuit according to the frequency
Carry out the open and close state of detection burnt gas valve；Combustion gas can also be set by preset duration sub-circuit and close alarm set
After above-mentioned first preset duration, infrared receiving/transmission circuit start detection the second preset duration (i.e. with above-mentioned certain frequency
The clock signal corresponding clock cycle), such as 5min, it is intended that after burnt gas valve is opened using 30min, finish a meal institute
State the duration using combustion gas, start the state that every 5min detects a burnt gas valve, with detect user after with gas whether
Closing gas valve door.By preset duration sub-circuit, so that whole device more meets people's lives habit, it is more humanized,
Wherein, preset duration can be set according to actual needs, and the circuit comprising button switch can be selected in preset duration sub-circuit.
Further, the infrared receiving/transmission circuit includes infrared emission sub-circuit and infrared receiver sub-circuit, the infrared hair
It penetrates sub-circuit and the infrared receiver sub-circuit is electrically connected with the microprocessor and the battery respectively.
The beneficial effect of above-mentioned further scheme is: propagating to metal by the infrared signal that infrared emission sub-circuit issues
Disk, when metal disk position changes, reflected infrared signal can also occur to change accordingly, then by infrared receiver
Sub-circuit receives the reflected infrared signal, and according to changed infrared signal, infrared receiver sub-circuit can be issued not
Same output electric signal facilitates microprocessor to judge combustion gas according to different output electric signals by different output electric signals
The open and close state of valve, by above-mentioned infrared emission sub-circuit and infrared receiver sub-circuit, method is simple, hardware cost
It is low.
Further, the infrared emission sub-circuit includes the first current-limiting resistance R1, the second current-limiting resistance R2, the first triode
T1With infrared-emitting diode D3, the first current-limiting resistance R1One end and the first I/O interface of the microprocessor be electrically connected
It connects, the first current-limiting resistance R1The other end and the first triode T1Base stage electrical connection, the first triode T1's
Collector is through the infrared-emitting diode D3With the second current-limiting resistance R2It is electrically connected afterwards with the VCC interface of the microprocessor
It connects.
Above-mentioned further scheme the utility model has the advantages that according to microprocessor issue driving signal, by the first current-limiting resistance
R1, by the first triode T1After amplification, infrared-emitting diode D is driven3By driving signal (i.e. infrared letter in the form of infrared light
Number) launch, the infrared signal is received convenient for infrared receiver sub-circuit, is detected convenient for the position to metal disk, from
And the position of burnt gas valve is detected.
Further, the infrared receiver sub-circuit includes infrared fileter P1, infrared receiving diode D4, demodulation chip U1
With multiple Resistor-Capacitor Units, the infrared receiving diode D4Receive the infrared-emitting diode D3It issues and by the infrared absorption filter
Mating plate P1The infrared signal of filtering, the infrared receiving diode D4Through the demodulation chip U1After the Resistor-Capacitor Unit
It is electrically connected respectively with the 2nd I/O interface and VCC interface of the microprocessor.
Above-mentioned further scheme the utility model has the advantages that infrared fileter P1The ambient light interference except infrared light can be filtered out,
Infrared light only can be irradiated to infrared receiving diode D4Up.By infrared receiving diode D4Infrared signal is obtained, then by solving
Aligning piece carries out frequency-selecting, amplification, filtering, and by treated, signal is sent to microprocessor, and infrared receiving/transmission circuit can be improved
The accuracy rate of the position of metal disk is detected, to improve the accuracy rate of detection burnt gas valve state.
Further, the warning circuit includes buzzer B1, the second triode T2, light emitting diode D1, third current-limiting resistance
R7With the 4th current-limiting resistance R8；The third current-limiting resistance R7One end be electrically connected with the 3rd I/O interface of the microprocessor,
And the third current-limiting resistance R7The other end and the second triode T2Base stage electrical connection, the second triode T2's
Collector and the buzzer B1Electrical connection；The 4th current-limiting resistance R8One end and the microprocessor the 4th I/O interface
Electrical connection, and the 4th current-limiting resistance R8The other end through the light emitting diode D1Afterwards with the buzzer B1Electrical connection, institute
State light emitting diode D1With the buzzer B1It is electrically connected respectively with the VCC interface of the microprocessor.
The beneficial effect of above-mentioned further scheme is: the warning circuit of the utility model is sound light alarming circuit, both can be with
Audible alarm can be issued when microprocessor detects that burnt gas valve is not closed in time by microprocessor again with light warning
A series of pulse signals, through third current-limiting resistance R7The second triode T is pushed after current limliting2Conducting drives buzzer B1Issue buzzing
Alarm, while microprocessor also issues square-wave signal, through the 4th current-limiting resistance R8After current limliting, light emitting diode D is driven1Lamp dodges
It is bright, sound, light warning reminding are realized with this, dual-alarm function can timely and effectively remind user, close in time convenient for user
Close burnt gas valve, form it is good be accustomed to gas, avoid occur gas leakage caused by accident.
Further, be additionally provided with battery power detection circuit in the shell, the battery power detection circuit respectively with institute
State battery and microprocessor electrical connection.
The beneficial effect of above-mentioned further scheme is: by battery power detection circuit, the electrolytic cell that facilitated user timely
Electricity avoid battery from being finished and can not carry out to burnt gas valve convenient for replacing battery in time when battery capacity will be used up
It timely and effectively detects, it is safe to be further ensured that combustion gas uses.
Further, the battery power detection circuit includes the first divider resistance R9, the second divider resistance R10, battery capacity indication
Lamp D2With the 5th current-limiting resistance R6, the first divider resistance R9With the second divider resistance R10The electricity is attempted by after series connection
The both ends in pond, and the first divider resistance R9With the second divider resistance R10Series connection point and the microprocessor A/D
Interface electrical connection, the battery capacity indication lamp D2One end be electrically connected with the 5th I/O interface of the microprocessor, and the electricity
Indicator light D2The other end through the 5th current-limiting resistance R6It is electrically connected afterwards with the VCC interface of the microprocessor.
Above-mentioned further scheme the utility model has the advantages that from resistance R10With R9Series connection point take voltage (i.e. R9The electricity at both ends
Pressure), and the voltage is linked into microprocessor, microprocessor is judged according to the voltage value thus to reach detection battery capacity
Purpose, when measuring, the voltage value is too low, illustrates that battery capacity is inadequate, microprocessor driven light emitting diode D2It is glittering, with this
To prompt user to replace battery.
Detailed description of the invention
Fig. 1 is that the installation top cross-sectional view of alarm set is closed in the combustion gas of the utility model；
Fig. 2 is that the mounting arrangement schematic diagram of alarm set is closed in the combustion gas of the utility model；
Fig. 3 is that the circuit connection diagram of alarm set is closed in the combustion gas of the utility model；
Fig. 4 is that the operation principle schematic diagram of alarm set is closed in the combustion gas of the utility model.
In attached drawing, parts list represented by the reference numerals are as follows:
100, shell, 200, burnt gas valve, 300, gas pipeline, 1, governor circuit, 2, infrared receiving/transmission circuit, 3, alarm electricity
Road, 4, battery, 5, battery power detection circuit, 11, microprocessor, 12, clock sub-circuit, 13, reset subcircuit, 14, default
Duration sub-circuit, 21, infrared emission sub-circuit, 22, infrared receiver sub-circuit.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiment obtained without making creative work, fall within the protection scope of the utility model.
Alarm set, including shell 100 are closed in embodiment, as shown in figures 1-4, a kind of combustion gas, and the shell 100 is installed
On the gas pipeline 300 close to burnt gas valve 200, governor circuit 1, infrared receiving/transmission circuit 2, report are equipped in the shell 100
Alert circuit 3 and battery 4, the battery 4 are electrically connected with the governor circuit 1；The governor circuit 1 respectively with the infrared receiving/transmission
Circuit 2 and the warning circuit 3 are electrically connected.
In the utility model, the infrared receiving/transmission circuit 2 is used to emit the gold in infrared signal to the burnt gas valve 200
Belong to disk, and receives the infrared signal returned from the metal stamper on piece；The governor circuit 1 is used for according to the infrared signal
Judge the open and close state of the burnt gas valve 200, and when judging that the burnt gas valve 200 is in the open state, sends out
Send alarm command to the warning circuit 300；The warning circuit 3 is used to issue alarm signal according to the alarm command.
In closing and unlatching, the position of the metal disk in burnt gas valve handle can change burnt gas valve, pass through
The intracorporal infrared receiving/transmission circuit transmission of shell and received infrared signal detect the metal disk on burnt gas valve, metal disk position
Variation is set, infrared signal also can accordingly change, and be judged by governor circuit according to different infrared signals, that is, can determine whether to fire
Whether air valve is in close state, and when being judged as open state, issues alarm command by governor circuit and controls warning circuit
Alarm signal is issued, to remind user to go to actively close burnt gas valve.Alarm set is closed in combustion gas through this embodiment, is promoted
User form it is good be accustomed to gas, so that eliminating burnt gas valve is not turned off bring security risk, avoid that gas leakage occurs
Caused accident ensures the safety of life and property of people, and apparatus structure is simple, easy for installation, at low cost, easy to spread,
Combustion gas safety-security area can be widely used in；Wherein, the infrared receiving/transmission circuit of the present embodiment and warning circuit are powered by governor circuit.
The fuel gas conduit that alarm set is arranged close to the handle of burnt gas valve by fastening bolt is closed in the combustion gas of the present embodiment
On road, top cross-sectional view is installed as shown in Figure 1, mounting arrangement schematic diagram is as shown in Figure 2.When fastening bolt is toward inside (fuel gas conduit
Road direction) rotation when, shank of bolt resists gas pipeline, so that device is clamped on gas pipeline.Device is mountable in pipeline
The above or below (Fig. 2 is shown before being mounted on burnt gas valve) of upper burnt gas valve, device and the gas valve along duct orientation
The distance between the axle center of door x is 10cm or so.
Preferably, the governor circuit 1 include microprocessor 11 and clock sub-circuit 12, the microprocessor 11 respectively with
The clock sub-circuit 12, the infrared receiving/transmission circuit 2, the warning circuit 3 and the battery 4 are electrically connected.
The microprocessor of the present embodiment includes multiple pin interfaces, microprocessor be used to be issued according to clock sub-circuit when
Clock signal controls the infrared signal of infrared receiving/transmission circuit transmission, as shown in figure 3, the CLK interface of clock sub-circuit and microprocessor
Connection can be set to delay or every transmission in the 5 minutes/reception infrared signal of timing by clock sub-circuit and detect a combustion gas
The mode of valve state.If burnt gas valve is in "Off" state always, microprocessor just recycles always timing 5 minutes to combustion
Air valve door state is detected, until burnt gas valve is opened.
Microprocessor and clock sub-circuit through this embodiment, convenient for infrared receiving/transmission circuit according to the infrared letter of the frequency
Number the open and close state of burnt gas valve is detected and is monitored, avoid the clock signal for being not provided with delay or timing and
Cause combustion gas to close alarm set and be constantly in detection and alert state, more meets real life needs, practicability is higher, and energy
Guarantee that the service life of alarm set is closed in combustion gas to a certain extent.
The microprocessor 11 of the present embodiment can select STM8L serial (such as STM8L051) or MSP430 series (such as
MSP430F2012), but it is not limited to above-mentioned model；The chip interior of these models is integrated with clock sub-circuit, this may be implemented
The microprocessor of invention and the function of clock sub-circuit.
Preferably, the governor circuit 1 further includes reset subcircuit 13, the reset subcircuit 13 and the microprocessor
11 electrical connections.
As shown in figure 3, the reset subcircuit of the present embodiment is for providing clock sub-circuit, infrared receiving/transmission circuit and alarm electricity
The reset signal on road, the reset subcircuit of the present embodiment and the Reset interface of microprocessor connect, and use reset button K1, lead to
It crosses user and is manually operated and reset to realize reset function, it is convenient when user goes actively to close according to the prompting that alarm set is closed in combustion gas
After closing burnt gas valve, make the device that burnt gas valve be detected and be reminded according to clock signal again, reset can also be passed through
The of short duration releasing alarm of signal, it is intelligent higher.
Preferably, the governor circuit 1 further includes preset duration sub-circuit 14, the preset duration sub-circuit 14 with it is described
Microprocessor 11 is electrically connected.
As shown in figure 3, the preset duration sub-circuit of the present embodiment and the 6th I/O interface (IO5 interface) of microprocessor connect
It connects, and passes through preset duration button K2To realize.
As shown in figure 4, the present embodiment is closed according to the combustion gas of preset duration sub-circuit, clock sub-circuit and reset subcircuit
The principle of alarm set is as follows: in the case where not using combustion gas, microprocessor is with every 5 minutes with the infrared arteries and veins of transmission/reception
The mode of punching detects a burnt gas valve state.If burnt gas valve is in "Off" state always, microprocessor is just followed always
Burnt gas valve state was detected in ring timing 5 minutes, until burnt gas valve is opened.When detect burnt gas valve switch
After " opening " state, it is preset duration that microprocessor, which can be adjusted to the detection time of burnt gas valve state, which is
It is configured by the routine in the present embodiment with gas duration pre-set button, being preset as 30 minutes (can be by user according to practical feelings
Condition adjustment).At the end of preset duration, then start to detect burnt gas valve state, if burnt gas valve still opens, by alarm electricity
Road issues alarm signal, reminds user to go to close combustion gas with this, hereafter whether detects a burnt gas valve again every 5 minutes
It closes.If continuing to issue alarm signal still without closing.When burnt gas valve is closed, then alarm can be released, and be back to figure
The first step shown in 4 restarts to be detected.
The setting of preset duration, user (as in most cases, can do one with the gas time according to the continuous of usually routine
Time required for meal), it is preset in 20 minutes to 60 minutes time ranges；Often press button K next time2, when presetting
Between increase by 5 minutes, when having been set to 60 minutes, then press a button K2, preset time becomes 20 minutes；Device default is conventional
A length of 30 minutes when with gas.
Preset duration sub-circuit through this embodiment more meets people's lives habit, more humanized.
Preferably, the infrared receiving/transmission circuit 2 includes infrared emission sub-circuit 21 and infrared receiver sub-circuit 22, described red
Outer transmitting sub-circuit 21 and the infrared receiver sub-circuit 22 are electrically connected with the microprocessor 11 respectively.
Metal disk is propagated to by the infrared signal that infrared emission sub-circuit issues, when metal disk position becomes
Change, reflected infrared signal can also occur to change accordingly, then by infrared receiver sub-circuit to receive this reflected red
External signal, according to whether receiving by the reflected infrared signal of metal disk or reflecting changed infrared letter
Number, infrared receiver sub-circuit can issue different output electric signals, by different output electric signals, facilitate microprocessor according to
Different output electric signals judges the open and close state of burnt gas valve, passes through above-mentioned infrared emission sub-circuit and infrared receiver
Sub-circuit, method is simple, and hardware cost is low.
Preferably, as shown in figure 3, the infrared emission sub-circuit 21 includes the first current-limiting resistance R1, the second current-limiting resistance
R2, the first triode T1With infrared-emitting diode D3, the first current-limiting resistance R1One end and the microprocessor 11 the
The electrical connection of one I/O interface, the first current-limiting resistance R1The other end and the first triode T1Base stage electrical connection, it is described
First triode T1Collector through the infrared-emitting diode D3With the second current-limiting resistance R2Afterwards with the microprocessor
11 VCC interface electrical connection.
Preferably, as shown in figure 3, the infrared receiver sub-circuit 22 includes infrared fileter P1, infrared receiving diode
D4, demodulation chip U1With multiple Resistor-Capacitor Units, the infrared receiving diode D4Receive the infrared-emitting diode D3It issues simultaneously
By the infrared fileter P1The infrared signal of filtering, the infrared receiving diode D4Through the demodulation chip U1And institute
It is electrically connected respectively with the 2nd I/O interface of the microprocessor 11 and VCC interface after stating Resistor-Capacitor Unit.
As shown in figure 3, (IO0 connects for the input of the infrared emission sub-circuit of the present embodiment and the first I/O interface of microprocessor
Mouthful) connection, the output of infrared receiver sub-circuit and the 2nd I/O interface (IO1 interface) connection of microprocessor, and infrared signal
Frequency is specific frequency (such as 38KHz), and infrared emission sub-circuit is by the first current-limiting resistance R1, the second current-limiting resistance R2, the one or three pole
Pipe T1With infrared-emitting diode D3Deng composition, the pulse signal of 38KHz of microprocessor modulation or so is exported through IO0 interface, then
By the first current-limiting resistance R1, by NPN type triode (the first triode) T1After amplification, infrared-emitting diode D is driven3, with red
The form of outer light launches pulse signal；
Infrared receiver sub-circuit receives the infrared signal of the specific frequency (38KHz), and exports V0 signal to microprocessor,
Microprocessor can judge unlatching/closed state of burnt gas valve, infrared signal receiving circuit according to the level of V0 signal height
By infrared fileter P1, infrared receiving diode D4, demodulation chip U1And multiple resistance capacitance elements etc. are constituted, infrared fileter
P1The ambient light interference except infrared light is filtered out, only infrared light can be irradiated to infrared receiver diode D4Up, by infrared receiver two
Pole pipe D4Acquisition infrared signal, then frequency-selecting (choosing 38KHz frequency), amplification, filtering are carried out by demodulation chip, and by treated
Signal V0 is sent to the IO1 interface of microprocessor.Particularly, the demodulation chip of the present embodiment selects CX20106A, but not only limits
In this chip.In infrared receiver sub-circuit using the demodulation of CX20106A chip, if receiving the infrared of effective (38KHz)
Signal, the output signal V0 of IR signal reception sub-circuit are low level signal.
As shown in Fig. 2, infrared emission sub-circuit and infrared receiver sub-circuit detect burnt gas valve unlatching/closing principle
Are as follows: when 200 knob of burnt gas valve is in position A1(position A1Refer to gas lockout valve) when, by infrared-emitting diode D3Transmitting
The infrared signal L to go out1When encountering the metal disk on the handle of burnt gas valve 200, infrared signal L1It is reflected to infrared receiver
Diode D4, by D4The 38KHz infrared signal L received2After being input to 1 pin of infrared demodulation chip CX20106A,
The 8 pin V0 of CX20106A can generate a low level；When 200 knob of burnt gas valve is in position A2(position A2Refer to burnt gas valve
Open) when, D3The infrared signal L launched1It cannot be reflected by the metal disk on the handle of burnt gas valve 200, infrared receiver
Diode D4Effective infrared signal is not received, No. 8 pin output signals of CX20106A are high level；Microprocessor 11 is logical
The level height for judging the V0 signal exported by No. 8 pins of CX20106A is crossed, that is, can determine whether burnt gas valve 200 is opened.
Wherein, the infrared-emitting diode D of the present embodiment3With infrared receiving diode D4The red of integrative packaging can be selected
Outer transmitting-receiving head (or two independent transmitting tubes, reception pipe are close to installation), infrared receiving/transmission head faces the handle of metal disk
Installation, when ensuring gas lockout valve, metal disk can preferably be reflected back infrared signal by infrared receiving diode
D4It receives, more conducively detects the state of burnt gas valve.
Preferably, the warning circuit 3 includes buzzer B1, the second triode T2, light emitting diode D1, third current limliting electricity
Hinder R7With the 4th current-limiting resistance R8；The third current-limiting resistance R7One end and the 3rd I/O interface of the microprocessor be electrically connected
It connects, and the third current-limiting resistance R7The other end and the second triode T2Base stage electrical connection, the second triode T2
Collector and the buzzer B1Electrical connection；The 4th current-limiting resistance R8One end and the microprocessor 11 the 4th I/O
Interface electrical connection, and the 4th current-limiting resistance R8The other end through the light emitting diode D1Afterwards with the buzzer B1It is electrically connected
It connects, the light emitting diode D1With the buzzer B1It is electrically connected respectively with the VCC interface of the microprocessor 11.
As shown in figure 3, the warning circuit of the present embodiment is sound light alarming circuit, sound light alarming circuit is by buzzer B1,
Two triode T2, light emitting diode D1, third current-limiting resistance R7With the 4th current-limiting resistance R8Deng composition, the 3rd I/O of microprocessor
Interface (IO3 interface) and third current-limiting resistance R7Connection, the 4th I/O interface (IO2 interface) of microprocessor and the 4th current limliting electricity
Hinder R8Connection；When microprocessor detects that combustion gas is not closed in time, a series of pulses are issued by the IO3 interface of microprocessor
Signal, through third current-limiting resistance R7The second triode (NPN type triode) T is pushed after current limliting2Conducting (can also be according to the actual situation
It is designed to embody audible alarm by ending), drive buzzer B1" drop drop " sound is issued, while microprocessor IO2 interface is sent out
Period 1 second or so square-wave signal out, through the 4th current-limiting resistance R8After current limliting, light emitting diode D is driven1Lamp is glittering, is come with this real
Existing sound, light warning reminding；When burnt gas valve is still without closing, continue to issue sound-light alarm；When burnt gas valve is closed, then can solve
Except alarm, extinguish light emitting diode D simultaneously1, user can pass through reset button K1Carry out resetting apparatus, it can also of short duration releasing sound, light
Alarm.
Preferably, battery power detection circuit 5 is additionally provided in the shell 100, the battery power detection circuit 5 is distinguished
It is electrically connected with the battery 4 and the microprocessor 11.
By battery power detection circuit, the electricity for the electrolytic cell that facilitated user timely, convenient for that will be used when battery capacity
Battery is replaced in time when to the greatest extent, is avoided battery from being finished and can not timely and effectively be detected to burnt gas valve, is further ensured that combustion
Gas uses safe.
Preferably, the battery power detection circuit 5 includes the first divider resistance R9, the second divider resistance R10, electricity refers to
Show lamp D2With the 5th current-limiting resistance R6, the first divider resistance R9With the second divider resistance R10It is attempted by after series connection described
The both ends of battery 4, and the first divider resistance R9With the second divider resistance R10Series connection point and the microprocessor 11
A/D interface electrical connection, the battery capacity indication lamp D2One end be electrically connected with the 5th I/O interface of the microprocessor, and institute
State battery capacity indication lamp D2The other end through the 5th current-limiting resistance R6It is electrically connected afterwards with the VCC interface of the microprocessor 11.
As shown in figure 3, the battery that alarm set is closed in the entire combustion gas of the present embodiment is made of the concatenated alkaline battery of three sections,
And the battery power detection circuit of the present embodiment is by the first divider resistance R9, the second divider resistance R10, battery capacity indication lamp D2With
Five current-limiting resistance R6Deng composition, the first divider resistance R9With the second divider resistance R10Series connection, is then attempted by the both ends of battery, from
First divider resistance R9With the second divider resistance R10Series connection point, take voltage value V1, by voltage value V1It is linked into micro process
The A/D switched pins of device, measure V by microprocessor1Voltage (i.e. the voltages at the both ends R9) simultaneously obtains electricity according to this measured value
The voltage at pond both ends, with this come achieve the purpose that detect battery capacity.When the battery voltage value measured is too low, illustrate battery capacity
Not enough, microprocessor the 5th I/O interface (IO4 interface) driving LED light D2 it is glittering, with this come prompt user replace battery.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. alarm set is closed in a kind of combustion gas, which is characterized in that including shell (100), the shell (100) is arranged close to fire
Be equipped on the gas pipeline (300) of air valve (200), in the shell (100) governor circuit (1), infrared receiving/transmission circuit (2),
Warning circuit (3) and battery (4), the battery (4) are electrically connected with the governor circuit (1), the governor circuit (1) respectively with
The infrared receiving/transmission circuit (2) and the warning circuit (3) electrical connection.
2. alarm set is closed in combustion gas according to claim 1, which is characterized in that the governor circuit (1) includes micro- place
Manage device (11) and clock sub-circuit (12), the microprocessor (11) respectively with the clock sub-circuit (12), the infrared receipts
Power Generation Road (2), the warning circuit (3) and the battery (4) electrical connection.
3. alarm set is closed in combustion gas according to claim 2, which is characterized in that the governor circuit (1) further includes multiple
Seat circuit (13), the reset subcircuit (13) are electrically connected with the microprocessor (11).
4. alarm set is closed in combustion gas according to claim 2, which is characterized in that the governor circuit (1) further includes pre-
If duration sub-circuit (14), the preset duration sub-circuit (14) is electrically connected with the microprocessor (11).
5. alarm set is closed in combustion gas according to claim 2, which is characterized in that the infrared receiving/transmission circuit (2) includes
Infrared emission sub-circuit (21) and infrared receiver sub-circuit (22), the infrared emission sub-circuit (21) and infrared receiver
Circuit (22) is electrically connected with the microprocessor (11) respectively.
6. alarm set is closed in combustion gas according to claim 5, which is characterized in that infrared emission sub-circuit (21) packet
Include the first current-limiting resistance R1, the second current-limiting resistance R2, the first triode T1With infrared-emitting diode D3, the first current limliting electricity
Hinder R1One end be electrically connected with the first I/O interface of the microprocessor (11), the first current-limiting resistance R1The other end and institute
State the first triode T1Base stage electrical connection, the first triode T1Collector through the infrared-emitting diode D3And institute
State the second current-limiting resistance R2It is electrically connected afterwards with the VCC interface of the microprocessor (11).
7. alarm set is closed in combustion gas according to claim 6, which is characterized in that infrared receiver sub-circuit (22) packet
Include infrared fileter P1, infrared receiving diode D4, demodulation chip U1With multiple Resistor-Capacitor Units, the infrared receiving diode D4
Receive the infrared-emitting diode D3It issues and by the infrared fileter P1The infrared signal of filtering, the infrared receiver two
Pole pipe D4Through the demodulation chip U1With after the Resistor-Capacitor Unit respectively with the 2nd I/O interface and VCC of the microprocessor (11)
Interface electrical connection.
8. alarm set is closed in combustion gas according to claim 2, which is characterized in that the warning circuit (3) includes buzzing
Device B1, the second triode T2, light emitting diode D1, third current-limiting resistance R7With the 4th current-limiting resistance R8；The third current-limiting resistance
R7One end be electrically connected with the 3rd I/O interface of the microprocessor (11), and the third current-limiting resistance R7The other end and institute
State the second triode T2Base stage electrical connection, the second triode T2Collector and the buzzer B1Electrical connection；Described
Four current-limiting resistance R8One end be electrically connected with the 4th I/O interface of the microprocessor (11), and the 4th current-limiting resistance R8's
The other end is through the light emitting diode D1Afterwards with the buzzer B1Electrical connection, the light emitting diode D1With the buzzer B1
It is electrically connected respectively with the VCC interface of the microprocessor (11).
9. alarm set is closed in combustion gas according to claim 2, which is characterized in that be additionally provided with electricity in the shell (100)
Pond electric quantity detecting circuit (5), the battery power detection circuit (5) respectively with the battery (4) and the microprocessor (11)
Electrical connection.
10. alarm set is closed in combustion gas according to claim 9, which is characterized in that the battery power detection circuit (5)
Including the first divider resistance R9, the second divider resistance R10, battery capacity indication lamp D2With the 5th current-limiting resistance R6, the first partial pressure electricity
Hinder R9With the second divider resistance R10The both ends of the battery (4), and the first divider resistance R are attempted by after series connection9With
The second divider resistance R10Series connection point be electrically connected with the A/D interface of the microprocessor (11), the battery capacity indication lamp D2
One end be electrically connected with the 5th I/O interface of the microprocessor (11), and the battery capacity indication lamp D2The other end through the 5th
Current-limiting resistance R6It is electrically connected afterwards with the VCC interface of the microprocessor (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822234858.0U CN209297467U (en) | 2018-12-28 | 2018-12-28 | A kind of combustion gas closing alarm set |
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| CN201822234858.0U CN209297467U (en) | 2018-12-28 | 2018-12-28 | A kind of combustion gas closing alarm set |
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| CN209297467U true CN209297467U (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509328A (en) * | 2018-12-28 | 2019-03-22 | 武汉工程大学 | A kind of combustion gas closing alarm set |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509328A (en) * | 2018-12-28 | 2019-03-22 | 武汉工程大学 | A kind of combustion gas closing alarm set |
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