CN201725409U

CN201725409U - Intelligent gas alarm

Info

Publication number: CN201725409U
Application number: CN 201020244524
Authority: CN
Inventors: 朱德荣; 吴松; 周平振; 马建
Original assignee: Luoyang Institute of Science and Technology
Current assignee: Luoyang Institute of Science and Technology
Priority date: 2010-07-02
Filing date: 2010-07-02
Publication date: 2011-01-26
Anticipated expiration: 2020-07-02

Abstract

The utility model discloses an intelligent gas alarm which comprises a controller and a receiver, wherein the controller takes a singlechip as the core. The intelligent gas alarm is characterized in that a monitoring circuit of the controller is used for monitoring the set value which exceeds the content of the gas; a trigger singlechip transmits a control signal by a transmitting circuit; the receiver is used for receiving the corresponding control signal; the reviver is used for respectively controlling the action of a gas valve, an exhaust fan and a range hood; and the controller is wirelessly connected with a receiving module regardless of the indoor wire arrangement, so that the intelligent gas alarm looks regular and attractive. When in use, the intelligent gas alarm not only has the functions of alarming and starting up an electromagnetic valve, but also starts up the action of the exhaust fan and the range hood, thereby leading the leaked gas to be discharged or dispersed as soon as possible, and avoiding the potential danger. As a power circuit of the intelligent gas alarm is a dual-voltage stabilization circuit and the measure for avoiding the interference resistance of the strong electricity and weak electricity is performed, the intelligent gas alarm greatly reduces the incidence of the false alarm.

Description

The intelligent fuel gas alarm

Technical field

The utility model relates to a kind of warning device, specifically relates to gas content in a kind of automatic detection certain space, possesses warning function and can start a kind of wireless alarm that equipment is evacuated in corresponding combustion gas.

Background technology

Existing fuel gas alarm has been generally line traffic control, i.e. main control module and receiver module wired connection cause house wiring in disorder, visually irregular attractive in appearance.

When existing fuel gas alarm uses, during the combustion gas content overproof, generally only possess warning function in detecting certain space, the caution personnel take relevant action; Or can start solenoid valve for gas when reporting to the police, thus close fuel gas source, avoid the further leakage of combustion gas.Do not start the function that equipment is evacuated in corresponding combustion gas but do not possess, i.e. the gas content of space internal leakage remains unchanged, and after the warning function effect, personnel enter this space under ignorant situation, still have certain danger.

Existing in addition fuel gas alarm, because its power circuit generally is not the bistable volt circuit, and its driving circuit generally do not possess the strong and weak electricity of avoiding interference protection measure, the reference voltage that provides of its detection module all causes the wrong report phenomenon without problems such as voltage stabilizings in addition.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of controlled in wireless, after detecting the combustion gas that exceeds standard, report to the police and close gas electromagnetic valve in start corresponding combustion gas and evacuate equipment, reduce the intelligent fuel gas alarm of wrong report probability greatly.

For achieving the above object, the utility model adopts technical scheme as described below:

Intelligent fuel gas alarm of the present utility model, comprise with the single-chip microcomputer being control core device and receiver, the content of the monitoring circuit monitors combustion gas of controller surpasses setting value, triggers single-chip microcomputer by the radiating circuit emissioning controling signal, and receiver receives control signal corresponding; Described receiver is controlled gas valve, exhaust fan and lampblack absorber action respectively.

Described intelligent fuel gas alarm, the observation circuit of controller comprise oscillator, combustion gas probe joint, analog comparator, triode, working station indicator and analog demenstration switch; Oscillator provides the work oscillating voltage to combustion gas probe joint, combustion gas probe joint output signal compares to the reference voltage signal of analog comparator with the process voltage stabilizing, the analog comparator output signal is to triode, triode conducting output signal is to single-chip microcomputer and analog demenstration switch, and triode outputs signal to the working station indicator driving circuit simultaneously.

Described intelligent fuel gas alarm, the radiating circuit of controller comprises scrambler, wireless sending module, and single-chip microcomputer is connected with scrambler, and scrambler and wireless sending module connect to form radio control circuit.

Described intelligent fuel gas alarm, receiver comprises wireless receiving module, code translator, photoelectrical coupler and bidirectional thyristor; Wireless receiving module receives the control signal of wireless sending module, exports photoelectrical coupler to through decoder for decoding, and the photoelectrical coupler output signal makes the bidirectional thyristor conducting form the loop, gas valve, exhaust fan and lampblack absorber action.

Because adopt aforesaid technical scheme, the beneficial effects of the utility model are:

1, because controller and receiver are realized wireless connections, need not to consider house wiring, visually neat appearance.

When 2, fuel gas alarm of the present utility model uses, not only possess warning and start the function of solenoid valve for gas, start the action of exhaust fan and lampblack absorber simultaneously, make the combustion gas of leakage get rid of as early as possible or evacuate, avoided potential danger.

3, because the power circuit of the fuel gas alarm of utility model is the bistable volt circuit, and take to avoid the strong and weak electricity interference protection measure, greatly reduce the incidence of wrong report.

Description of drawings

Fig. 1 is the utility model controller system structural representation;

Fig. 2 is the utility model fuel gas alarm program flow diagram;

Fig. 3 is the utility model controller testing circuit structural representation;

Fig. 4 is the utility model controller radiating circuit structural representation;

Fig. 5 is the utility model receiving circuit structural representation;

Fig. 6 is the utility model controller drives electrical block diagram;

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified, what need explanation is that the utility model is not limited to following embodiment.

Intelligent fuel gas alarm of the present utility model comprises with the single-chip microcomputer being control core device and receiver, and controller comprises power circuit, internal electric source indicating fault and communication indicating circuit and the observation circuit that connection and radiating circuit, driving circuit, reset circuit, crystal oscillating circuit, transforming circuit and the mu balanced circuit of single-chip microcomputer pin are formed.

In the observation circuit of its middle controller, by the U6555 timer, the circuit that C12, R23, C14 constitute provides pulse voltage to the coal gas probe, and when the coal gas probe detected coal gas, gas concentration was big more, and coal gas probe resistance value is more little, so the electromotive force that B is ordered increases; U7A is the voltage analog comparer, when the voltage signal of B point input greater than reference voltage signal by the R21 input, 1 pin of U7A will be exported high level and make the Q3 conducting, is low level thereby make single-chip microcomputer 12 pin, and then carries out interrupt routine; Will send data-signal to scrambler after single-chip microcomputer is received, make circuit erroneous action, between R21 and R17, add stabilivolt D13 for preventing the supply voltage shakiness, R18-R20, Q2, D14 constitute condition indication circuit, and S2 simulates the coal gas switch that exceeds standard.

In the radiating circuit of controller, single-chip microcomputer the 1st, 2,3 pin are used for controlled encoder U8, single-chip microcomputer can send data-signal to scrambler U8 when master controller detects coal gas, after scrambler is encoded data-signal, issue the 3rd pin data input pin of wireless sending module U9F05p by 17 pins of U8, the 4th pin-wireless data output terminal by sending module U9F05p sends to receiver module afterwards.

In the acceptor circuit, JP2 is the 12v power connection through transformation, and D1 is a rectifier bridge, and the low-voltage of being responsible for transformation is come becomes direct current, and filtering just becomes stable voltage later on through C1; D2 is a power light, and process U1 voltage stabilizing once more gives circuit supply later on.Receiver module JP1 receives the control signal of sending module transmission and by the 5th pin of wireless receiving module control signal is issued code translator U2 later, U2 is sent signal by the 16th pin of code translator after the signal interpretation, disturbs for preventing that forceful electric power from constituting light current herein; Carry out photoelectricity with optocoupler U3 and isolate, thereby signal makes bidirectional thyristor Q1 conducting through being exported for the 4th mouthful by optocoupler U3 behind the U3, and then make JP4, JP3 constitute the loop to make and produce electric current in the exhaust fan and work; Wherein JP3 is that attaching plug JP4 is the exhaust fan socket.Simultaneously, the receiver operation principle of control gas valve and lampblack absorber is equal to the receiver with above-mentioned control exhaust fan.

In the driving circuit, the external exclusion R13 of the 32-39 pin of single-chip microcomputer constitutes driving circuit with the U28D latch again, and after master controller detected signal when coal gas takes place to leak, single-chip microcomputer will drive hummer, light emitting diode sound and light alarm; R1, D3 constitute condition indication circuit, and R2, D7 constitute photoelectric alarm circuit, and Q1, R8, LS1 constitute the audible alarm circuit, and wherein U1, U4 are abducent circuit modules.

Claims

1. intelligent fuel gas alarm, comprise with the single-chip microcomputer being control core device and receiver, it is characterized in that the content of the monitoring circuit monitors combustion gas of controller surpasses setting value, trigger single-chip microcomputer by the radiating circuit emissioning controling signal, receiver receives control signal corresponding; Described receiver is controlled gas valve, exhaust fan and lampblack absorber action respectively.

2. intelligent fuel gas alarm according to claim 1 is characterized in that, the observation circuit of described controller comprises oscillator, combustion gas probe joint, analog comparator, triode, working station indicator and analog demenstration switch; Oscillator provides the work oscillating voltage to combustion gas probe joint, combustion gas probe joint output signal compares to the reference voltage signal of analog comparator with the process voltage stabilizing, the analog comparator output signal is to triode, triode conducting output signal is to single-chip microcomputer and analog demenstration switch, and triode outputs signal to the working station indicator driving circuit simultaneously.

3. intelligent fuel gas alarm according to claim 1 is characterized in that the radiating circuit of described controller comprises scrambler, wireless sending module, and single-chip microcomputer is connected with scrambler, and scrambler and wireless sending module connect to form radio control circuit.

4. intelligent fuel gas alarm according to claim 1 is characterized in that described receiver comprises wireless receiving module, code translator, photoelectrical coupler and bidirectional thyristor; Wireless receiving module receives the control signal of wireless sending module, exports photoelectrical coupler to through decoder for decoding, and the photoelectrical coupler output signal makes the bidirectional thyristor conducting form the loop, gas valve, exhaust fan and lampblack absorber action.