CN2585227Y - Multichannel time-division cycle gas leakage alarm - Google Patents
Multichannel time-division cycle gas leakage alarm Download PDFInfo
- Publication number
- CN2585227Y CN2585227Y CN 02250199 CN02250199U CN2585227Y CN 2585227 Y CN2585227 Y CN 2585227Y CN 02250199 CN02250199 CN 02250199 CN 02250199 U CN02250199 U CN 02250199U CN 2585227 Y CN2585227 Y CN 2585227Y
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- circuit
- gating
- timesharing
- gas
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Abstract
The utility model discloses a multiway time-sharing circuit alarm for gas leakage, which comprises at least two-way independent input circuits of a gas sensing signal, a power circuit, a single chip computer, a time-sharing gating circuit, a gating detecting display circuit, a gas concentration display circuit, and an alarm circuit, each output end of the independent input circuits of a gas sensing signal is connected with each channel input end of the time-sharing gating circuit, a gating triggering end of the time-sharing gating circuit is connected with an output end of a time-sharing gating triggering signal of the single chip computer, a gating triggering end of the gating detecting display circuit is also connected with the output end of a time-sharing gating triggering signal of the single chip computer, and each channel of the gating detecting display circuit is connected with a green light emitting diode which is used for displaying a selected channel. The utility model has the function of multiway gating, can realize the omnibearing time-sharing circuit supervision of a plurality of different places, has the advantage of simplicity, and can satisfy the safe requirement of gas using for a gas station or a housing estate.
Description
Affiliated technical field
The utility model relates to a kind of gas alarm, especially relates to the touring Fuel Gas Leak Alarm of a kind of multichannel timesharing.
Background technology
Existing numerous Fuel Gas Leak Alarm is made up of gas sensor, single-chip microcomputer, gas concentration display circuit, warning circuit and executive circuit, these Fuel Gas Leak Alarm are mainly used in the leakage alarm of household gas apparatus, only are suitable for the monitoring to single combustion gas tool; When at some gas stations or the residential quarter need detect when monitoring to a plurality of places, can only a Fuel Gas Leak Alarm all be installed in each place that needs, so not only the cost height also can't be accomplished the unified monitoring that detects.
The utility model content
The purpose of this utility model is to provide a kind of touring Fuel Gas Leak Alarm of multichannel timesharing that can carry out the touring monitoring of comprehensive timesharing to a plurality of different locations.
The purpose of this utility model can realize by following technical measures: comprise power circuit, single-chip microcomputer, gas concentration display circuit and warning circuit, power circuit is exported the dc supply of every other circuit, described each circuit is connected with each corresponding interface on the single-chip microcomputer, it is characterized in that: also comprise at least two tunnel gas sensing signal input circuits independently, timesharing gating circuit and gating detect display circuit, each independently the output terminal of gas sensing signal input circuit be connected with each passage input end of timesharing gating circuit, the output terminal of timesharing gating circuit connects the transducing signal input end of single-chip microcomputer, the gating trigger end of timesharing gating circuit connects the timesharing gating trigger pip output terminal of single-chip microcomputer, the gating trigger end of gating detection display circuit also connects the timesharing gating trigger pip output terminal of single-chip microcomputer, each passage that gating detects display circuit is connected with the green LED that is used to show selected passage, and each green LED is connected to dc supply through resistance.
The utility model also is provided with executive circuit, described executive circuit comprises corresponding to each the independently pilot relay and the multichannel output trigger of gas sensing signal input circuit, corresponding each pilot relay that is connected in of every road output of multichannel output trigger, the every road output of multichannel output trigger is connected with and is used to show that this road need close the red light emitting diodes of gas check valve, and each red light emitting diodes is connected to dc supply through resistance.
Be provided with the potentiometer that is used for this road zeroing in the gas sensing signal input circuit of every road described in the utility model.
Because the utility model is provided with the function of multi channel selecting, can realize that touring detection of comprehensive timesharing carried out in a plurality of different locations to be monitored, and each branch road that is detected there is respective green light emitting diode indication, corresponding red light emitting diodes indication is arranged during each branch road leakage alarm, simple and clear, satisfy gas station or residential quarter gas security needs.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model specific embodiment.
Embodiment
As shown in Figure 1 and Figure 2, present embodiment comprises that power circuit, single-chip microcomputer, gas sensing signal input circuit, timesharing gating circuit, gating detect display circuit, gas concentration display circuit, warning circuit and executive circuit.
The power circuit (not shown) is directly used the 220V electric main, after filtering by the transformer step-down, carry out full-bridge rectification, behind capacitor filtering, by model is that the three terminal regulator output 5V power supply of LM7805 uses for every other circuit, and model then provides the 3V power supply to specialize in the sensor use for the voltage stabilizer of LM317.
Present embodiment adopts eight tunnel gas sensing signal input circuits independently, every road all has components identical to constitute, with the first via is example, should be that amplifier U1B, the U1A of LM358 is formed by connecting by catalytic combustion type sensor, model, be connected with the potentiometer that is used for this road zeroing at the in-phase end of amplifier U1A.
The timesharing gating circuit is that 4051 gating chip U2 constitutes by model, eight the tunnel independently the output terminal of gas sensing signal input circuit be connected with eight passage input end X0～X7 of gating chip U2 respectively, gating chip U2 output terminal X be connected to the transducing signal input end PB0/A0 that model is the single-chip microcomputer U4 of S46R22, corresponding timesharing gating trigger pip output terminal PB2/A2, PB3/A3, the PB4/A4 that connects single-chip microcomputer of the gating trigger end A of gating chip U2, B, C.
It is that 4051 gating chip U5 and green LED L1～L8 constitute also corresponding timesharing gating trigger pip output terminal PB2/A2, PB3/A3, the PB4/A4 that connects single-chip microcomputer U4 of the gating trigger end A of gating chip U5, B, C by model that gating detects display circuit; Each passage input end X0 of gating chip U5～X7 is connected in series a green LED that is used to show selected passage, and each green LED is connected to the 5V dc supply through resistance.
On single-chip microcomputer U4, connect four buttons of enforcement that are used to control various functions, comprising that can set in advance the gas alarm threshold values dense crosses is provided with key, fixedly checks key, channel selecting key and inspection/noise elimination key, check that fixedly key and channel selecting key are used, can carry out real-time follow-up to each road monitoring result, the channel selecting key then can select a passage to monitor arbitrarily; Sound when inspection/noise elimination key is used as test operating state and warning is eliminated.Above-mentioned four buttons are connected to the push button signalling input end PB1/A1 of single-chip microcomputer U4.
The gas concentration display circuit is by four LED, the code translator U6 of display density value and drive triode Q2～Q5 and be formed by connecting, warning circuit by model be RT0618 speech chip U3, drive triode Q1 and loudspeaker are formed by connecting.
Executive circuit comprises corresponding to each the independently pilot relay and the multichannel output trigger chip U7 of gas sensing signal input circuit, corresponding each pilot relay that is connected in of every road output of multichannel output trigger, the every road output of multichannel output trigger chip U7 is connected with and is used to show that this road need close the red light emitting diodes L9～L16 of gas check valve, and each red light emitting diodes is connected to the 5V dc supply through resistance.
The concrete course of work is: eight tunnel external gas sensors of different location are converted to level signal with the variation of gas concentration and content and are sent to amplifier, enter each input end of gating chip, signal is by each paths of single-chip microcomputer timesharing gating, single-chip microcomputer is in real time with being sent to group of four figures pipe after the gas concentration signal comparison process, to show corresponding gas concentration value; Each paths that shows current monitoring by green indicating lamp.When gas concentration reaches a certain preset value, send out the luminous warning of red led that single-chip microcomputer goes out to instruct to sound warning and this road correspondence, export control signal simultaneously, to make 220 volts of AC power of relay output, close gas solenoid valve or other usefulness.Red led and relay status keep certain hour after reporting to the police, and single-chip microcomputer then continues each line state of itinerant monitor system.
Claims (3)
1, Fuel Gas Leak Alarm is gone the rounds in a kind of multichannel timesharing, comprise power circuit, single-chip microcomputer, gas concentration display circuit and warning circuit, power circuit is exported the dc supply of every other circuit, described each circuit is connected with each corresponding interface on the single-chip microcomputer, it is characterized in that: also comprise at least two tunnel gas sensing signal input circuits independently, timesharing gating circuit and gating detect display circuit, each independently the output terminal of gas sensing signal input circuit be connected with each passage input end of timesharing gating circuit, the output terminal of timesharing gating circuit connects the transducing signal input end of single-chip microcomputer, the gating trigger end of timesharing gating circuit connects the timesharing gating trigger pip output terminal of single-chip microcomputer, the gating trigger end of gating detection display circuit also connects the timesharing gating trigger pip output terminal of single-chip microcomputer, each passage that gating detects display circuit is connected with the green LED that is used to show selected passage, and each green LED is connected to dc supply through resistance.
2, the touring Fuel Gas Leak Alarm of multichannel timesharing according to claim 1, it is characterized in that: also be provided with executive circuit, described executive circuit comprises corresponding to each the independently pilot relay and the multichannel output trigger of gas sensing signal input circuit, corresponding each pilot relay that is connected in of every road output of multichannel output trigger, the every road output of multichannel output trigger is connected with and is used to show that this road need close the red light emitting diodes of gas check valve, and each red light emitting diodes is connected to dc supply through resistance.
3, the touring Fuel Gas Leak Alarm of multichannel timesharing according to claim 1 is characterized in that: be provided with the potentiometer that is used for this road zeroing in the gas sensing signal input circuit of described every road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250199 CN2585227Y (en) | 2002-12-11 | 2002-12-11 | Multichannel time-division cycle gas leakage alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250199 CN2585227Y (en) | 2002-12-11 | 2002-12-11 | Multichannel time-division cycle gas leakage alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2585227Y true CN2585227Y (en) | 2003-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02250199 Expired - Fee Related CN2585227Y (en) | 2002-12-11 | 2002-12-11 | Multichannel time-division cycle gas leakage alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2585227Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192953A (en) * | 2010-08-30 | 2011-09-21 | 中机生产力促进中心 | Low-power consumption intelligent three-dimensional magnetic leakage detecting probe |
| CN109637092A (en) * | 2018-11-23 | 2019-04-16 | 鑫益能机电科技（厦门）有限公司 | A kind of imflammable gas detection control apparatus and system |
-
2002
- 2002-12-11 CN CN 02250199 patent/CN2585227Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192953A (en) * | 2010-08-30 | 2011-09-21 | 中机生产力促进中心 | Low-power consumption intelligent three-dimensional magnetic leakage detecting probe |
| CN109637092A (en) * | 2018-11-23 | 2019-04-16 | 鑫益能机电科技（厦门）有限公司 | A kind of imflammable gas detection control apparatus and system |
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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 |