CN2512057Y - Household gas alarm device with external sensor - Google Patents
Household gas alarm device with external sensor Download PDFInfo
- Publication number
- CN2512057Y CN2512057Y CN 01258475 CN01258475U CN2512057Y CN 2512057 Y CN2512057 Y CN 2512057Y CN 01258475 CN01258475 CN 01258475 CN 01258475 U CN01258475 U CN 01258475U CN 2512057 Y CN2512057 Y CN 2512057Y
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- circuit
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- main control
- control system
- gas alarm
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Abstract
The utility model provides a household gas alarm device with external sensor and relating to the gas alarm device technique. The alarming device comprises a control leading machine and an external sensor, wherein, the control leading machine comprises a rectifying filtering circuit, a steady voltage circuit, a control circuit, an alarming circuit and a drive-control circuit; a circuit of the sensor is arranged in the external sensor other than in the control leading machine and is connected with the control leading machine through electric signals. The utility model has a simple structure, with the sensor separated from the control leading machine to meet the mounting requirements of the sensor, and with the control leading machine arranged and used randomly on a position convenient to control. Therefore, the utility model is safe, reliable and convenient to operate.
Description
Technical field
The utility model relates to the alarm technical field, particularly domestic gas alarm correlation technique.
Background technology
The use of inflammable gas has become huge numbers of families' main energy sources, gas leakage and the blast and the poisoning that cause happen occasionally, and the safety of people's lives and properties in serious threat, and therefore various flammable gas alarm devices are used widely.The domestic gas alarm generally is made up of sensor and control circuit, and when combustible gas leakage reached finite concentration, alarm just produced sound and light alarm, and the output control signal, to cut off air-supplying valve.For safety requirements, the control signal output that domestic gas is reported to the police should be provided with the automatic/hand switch, so that under special circumstances, can manually export control signal, for example: utilize button or switch on the alarm to open, close burnt gas valve etc.China's combustion gas commonly used at present is broadly divided into two kinds, a kind of is heavier-than-air combustion gas (as petroleum gas etc.), another kind is lighter-than-air combustion gas (as natural gas, a town gas etc.), can be deposited near the ground when in a single day heavier-than-air combustion gas leaks, when alarm is installed, generally require overhead in the 50cm.Can fly on the ceiling when in a single day lighter-than-air combustion gas leaks, so general the requirement is installed in ceiling 50cm when alarm is installed, fuel gas alarm must be installed in strict accordance with above method just can guarantee effectively perception gas leakage situation of alarm.Hence one can see that, and the domestic gas alarm must be installed on lower or higher position, and this makes the user very inconvenient to the operation of alarm.Be installed near the alarm of ceiling especially, operation is difficulty more.And, because main control system and inflammable gas are positioned at the same space, leak when reaching explosion ratio, may set off an explosion because of the sound and light alarm signal of alarm.
Technology contents
The purpose of this utility model is to design a kind of simple in structure, and sensor separates installation with main control system, both can satisfy the installation requirement of sensor, can make main control system arbitrarily be installed on easy to operate position again, and is both safe and reliable, again handled easily.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of sensor built-out type domestic gas alarm, comprise main control system and external sensing apparatus, main control system is by the control circuit that is used for the filter rectifier of power supply and mu balanced circuit being provided, controlling by certain setting to total system, the Drive and Control Circuit that be used to point out warning circuit, is used to drive execution unit is formed, it is characterized in that, described sensor circuit is not located in the main control system, but separates with main control system, joins by electric signal and main control system.Described sensor built-out type domestic gas alarm, sensor circuit and main control system are to link together by lead.Described sensor built-out type domestic gas alarm, sensor circuit and main control system are to link together by launching and receiving radio signals.
The utility model technological merit is simple in structure, and sensor and main control system are separated, and both connect by electric signal, both can satisfy the installation requirement of sensor, is convenient to control again and mainly arbitrarily is installed on easy to operate position, and is both safe and reliable, again handled easily.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is a control flow chart of the present utility model;
Fig. 3 is a circuit diagram of the present utility model;
Fig. 4 is the utility model contour structures synoptic diagram.
Specific implementation method
A kind of sensor built-out type domestic gas alarm, comprise main control system 1, sensor device 2, main control system 1 comprises housing 10 and circuit part 11, by the filter rectifier 110 and the mu balanced circuit 111 that are used for providing power supply to total system, the control circuit of controlling by certain setting 112, be used to point out warning circuit 113, be used to drive Drive and Control Circuit 114 compositions of execution unit, it is characterized in that, described sensor device 2 comprises sensor outer housing 20 and sensor circuit 21, sensor device 2 is not located in the main control system 1, but separate with main control system, join by electric signal and main control system 1.Described sensor built-out type domestic gas alarm, sensor circuit 21 is to link together by lead with main control system 1.Sensor built-out type domestic gas alarm, sensor circuit 21 is to link together by radio signal with main control system 1.
In the specific embodiment, the sensor circuit course of work is as follows:
SENS1 is accurate gas sensor, and when perceiving inflammable gas, sensor 1,3 pin can produce the change in voltage of 0-50mV, is sent to the IC1 pin after the anti-phase proportional amplifier amplification through R10, R11 and Lm358 formation.RW is accurate adjustable resistance, and being used for regulating sensor initial output voltage of the 1st pin of IC2 when peace and quiet air is 1.0V.R7 and R4 constitute whether active line connection circuit of external line, as effective connection, will produce certain electric signal and pass IC1 the 6th pin back and analyze for IC1.
The main control system circuit part course of work is as follows:
1) TR1, D1, D2, D3, D4 and capacitor C 1, C6 constitute transformation, filter rectifier;
2) R31, R32, R33, D5, L1, C13, C15 and MC34063 constitute the Switching Power Supply mu balanced circuit, produce 2.85V voltage and are used for the working sensor power supply;
3) U1 (78L05), C3, C7 constitute the 5V mu balanced circuit, mainly are to provide working power for single-chip microcomputer IC1;
4) triode Q9-Q14, C12 and resistance R 21-R28 constitute the positive and negative rotation driving circuit of valve positioner.The positive and negative terminal of motor is connected to "+motor-" part respectively.When IC1 the 9th pin place is a high level, when IC1 the 10th pin was low level, Q14, Q12, Q10 ended, and Q9, Q11, Q13 admittance motor just change.Otherwise, the motor counter-rotating;
5) D11, Relay (double-contact relay) Q14 and R15 composition is often opened/normally closed networking signal output apparatus;
6) C8, R19, Q15, D19, R17, R18, RLED, YLED and speaker form sound light alarming circuit;
7) IC1 is the 68HC08JK3 that adopts MOTOROLA company, interior band watchdog circuit and A/D converter.Pass through coding, the variation of real time monitoring the 7th pin (sensor input signal pin), when the change in voltage of the 7th pin to certain value, just the required combustable gas concentration of sensor reaches 15%LEL, output low concentration visual alarm (yellow led per second kind is glimmered once, per 15 second buzzer call 5 times).Can work as and export audible-visual annunciator (hummer hurriedly pipes, and red LED is lighted) when the combustion gas bulk concentration reaches 25%LEL, the signal of output relay networking simultaneously fires the valve signal with closing.
Claims (3)
1, a kind of sensor built-out type domestic gas alarm, comprise main control system (1), sensor circuit (2), main control system (1) comprises shell (10) and circuit part (11), circuit part (11) is by the filter rectifier (110) and the mu balanced circuit (111) that are used for providing to total system power supply, the control circuit of controlling by setting (112), be used to point out warning circuit (113), the Drive and Control Circuit (114) that is used to drive execution unit is formed, it is characterized in that, described sensor device (2), form by sensor outer housing (20) and sensor circuit (21), sensor device (2) is not located in the main control system (1), but separate with main control system (1), join by electric signal and main control system (1).
2, sensor built-out type domestic gas alarm according to claim 1 is characterized in that, sensor circuit (21) is to link together by lead with the circuit part (11) of main control system (1).
3, sensor built-out type domestic gas alarm according to claim 1 is characterized in that, sensor circuit (21) is to link together by radio signal with the circuit part (11) of main control system (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01258475 CN2512057Y (en) | 2001-11-28 | 2001-11-28 | Household gas alarm device with external sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01258475 CN2512057Y (en) | 2001-11-28 | 2001-11-28 | Household gas alarm device with external sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512057Y true CN2512057Y (en) | 2002-09-18 |
Family
ID=33667056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01258475 Expired - Fee Related CN2512057Y (en) | 2001-11-28 | 2001-11-28 | Household gas alarm device with external sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512057Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319325A (en) * | 2015-06-28 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Gas detecting device |
-
2001
- 2001-11-28 CN CN 01258475 patent/CN2512057Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319325A (en) * | 2015-06-28 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Gas detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |