CN204632068U - A kind of flammable gas alarm based on GSM short message module - Google Patents
A kind of flammable gas alarm based on GSM short message module Download PDFInfo
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- CN204632068U CN204632068U CN201520305784.9U CN201520305784U CN204632068U CN 204632068 U CN204632068 U CN 204632068U CN 201520305784 U CN201520305784 U CN 201520305784U CN 204632068 U CN204632068 U CN 204632068U
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Abstract
The utility model proposes a kind of flammable gas alarm based on GSM short message module, comprise Detection Circuit, the output terminal of this Detection Circuit is connected to filtering pre-amplification circuit, the output terminal of this filtering pre-amplification circuit is connected to master controller, and this master controller is connected with sound and light alarm and output circuit, input through keyboard circuit, display circuit and GSM interface circuit.The utility model circuit structure is simple, GSM network is utilized to complete information wireless transmission, have more practicality, due to GSM technology have that function is strong, technology maturation, easy to use, wide coverage and the feature such as to be widely used, particularly under unattended environment, field gas pipeline, can throw on multinode ground, effectively prevent combustion gas from leaking outside and the generation of fire, reach Long-distance Control, remote monitoring and remote alarms Managing Integration Mode, for monitoring provides a kind of new technological means.
Description
Technical field
The utility model relates to flammable gas alarm technical field, specifically a kind of flammable gas alarm based on GSM short message module.
Background technology
Flammable gas alarm also claims gas leakage detection alarm instrument.When in industrial environment, everyday environments (as used the kitchen of rock gas), inflammable gas is revealed, when flammable gas alarm detects that inflammable gas concentration reaches the alarming value of alarm setting, flammable gas alarm will send sound, visual alarm, takes evacuating personnel, forces air draft, closes down the safety practices such as equipment to remind.And the systems such as the interlocking equipment that gas alarm linkage is correlated with as revealed in plant produced, accumulating, can drive air draft, cut off the electricity supply, spray, prevent blast, fire, intoxication accident, thus guarantee safe production.Through being commonly used in chemical plant, oil, gas station, steel plant etc. use or produce the place of inflammable gas.
Real-Time Monitoring inflammable gas, concentration of toxic gases in some particular job places and particular surroundings, be extremely important for safety in production.For now, the Signal transmissions great majority of flammable gas alarm are wire transmission.And under unattended environment, field gas pipeline, throws in needing multinode, effectively could prevent combustion gas from leaking outside and the generation of fire, reach Long-distance Control, remote monitoring and remote alarms Managing Integration Mode.And the mode of wire transmission has certain retardance to realizing these objects, a kind of new gas leakage detection alarm instrument is therefore needed to solve this problem.
Utility model content
The utility model proposes a kind of flammable gas alarm based on GSM short message module, efficiently solve the problem that flammable gas alarm in prior art is unsuitable for multinode input.
The technical solution of the utility model is achieved in that
A kind of flammable gas alarm based on GSM short message module, comprise Detection Circuit, the output terminal of this Detection Circuit is connected to filtering pre-amplification circuit, the output terminal of this filtering pre-amplification circuit is connected to master controller, and this master controller is connected with sound and light alarm and output circuit, input through keyboard circuit, display circuit and GSM interface circuit.
Further, described master controller is single-chip microcomputer.
Further, described single-chip microcomputer is STC90C514AD single-chip microcomputer.
Further, described Detection Circuit adopts catalytic combustion-type sensor.
Further, described GSM interface circuit adopts TC35i module.
The beneficial effects of the utility model are:
The utility model circuit structure is simple, GSM network is utilized to complete information wireless transmission, have more practicality, due to GSM technology have that function is strong, technology maturation, easy to use, wide coverage and the feature such as to be widely used, particularly under unattended environment, field gas pipeline, can throw on multinode ground, effectively prevent combustion gas from leaking outside and the generation of fire, reach Long-distance Control, remote monitoring and remote alarms Managing Integration Mode, for monitoring provides a kind of new technological means.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the utility model embodiment;
Fig. 2 is the workflow schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the flammable gas alarm based on GSM short message module in the present embodiment, comprise Detection Circuit, the output terminal of this Detection Circuit is connected to filtering pre-amplification circuit, the output terminal of this filtering pre-amplification circuit is connected to master controller, and this master controller is connected with sound and light alarm and output circuit, input through keyboard circuit, display circuit and GSM interface circuit.In the present embodiment, master controller is STC90C514AD single-chip microcomputer, and GSM interface circuit adopts TC35i module.
In the present embodiment, catalytic combustion-type sensor is adopted in Detection Circuit, its principal feature is that investigative range is extensive, good sensitivity is had in wider concentration range, fast response time, be suitable for the detection of the combustable gas concentrations such as liquefied gas, butane, propane, methane, alcohol and hydrogen, when system worked well, catalytic combustion-type sensor exports millivolt (mV) level analog voltage signal, signal is pre-amplification circuit after filtering, directly carries out A/D conversion process in input single-chip microcomputer.
Catalytic combustion-type sensor output signal is the small millivolt voltage signal with clutter, and this signal cannot directly carry out changing and processing, and therefore needs to carry out the voltage signal of filter amplifying processing to 0 ~ 5V.This filtering pre-amplification circuit, have employed the high-accuracy operational amplifier ICL7650 of steady zero formula of temporary ripple, the advantages such as input bias current is little, lack of proper care little, gain is high, common mode inhibition capacity is strong, response is fast, the drift end, stable performance and cheap in price that it has.
Single-chip microcomputer is the core of whole flammable gas alarm, and catalytic combustion-type sensor exports the weak voltage signals be directly proportional to concentration and directly arrives in single-chip microcomputer (CPU) through filter and amplification and carry out A/D conversion.In the present embodiment, master controller adopts the 7th generation superpower antistatic, superpower anti-interference, Width funtion, super low-power consumption, ultralow valency, highly reliable, the high performance CMOS of high speed 8 single-chip microcomputer STC90C514AD, has in 56K bytes Flash and sheet up to functions such as 4352 byte data memory RAM in sheet.
The information such as the controling parameters of flammable gas alarm, are realized by input through keyboard circuit.By pressing different buttons, realize different functions.The correlation functions such as alarming value setting, failure logging inquiry, noise elimination, gas concentration demarcation can be realized.Single-chip microcomputer just carries out run-down to button every a cycle of operation, when scanning certain button and pressing, performs corresponding function program.
The display circuit part of flammable gas alarm adopts OCM-12864L to be with the liquid crystal display of Chinese word library, is shown the functions such as gas concentration value, failure logging, warning message by liquid crystal display.Utilize flexible, simple interface mode and the operational order easily of this circuit, complete Chinese man-machine interaction graphical interfaces can be formed.
When gas concentration exceedes setting value, flammable gas alarm sends SMS alarm handling procedure, to point out people with sound and light alarm and output, startup GSM interface circuit.
GSM interface circuit adopts gsm module TC35i to realize the sending function of remote alarms information, TC35i module primarily of GSM based on processor, GSM radio-frequency module, supply module, flash memory, ZIF connector, antennal interface 6 part forms, it is the integrated gsm modules of a double frequency 900/1800MHz two frequency range height, by ZIF connector and chip microcontroller hardware circuit interface, receiving end (RX) and the transmitting terminal (TX) of the receiving end (RX) of TC35i and transmitting terminal (TX) and single-chip microcomputer have been connected the transmitting-receiving process with single-chip microcomputer, the software interface of single-chip microcomputer and TC35i module is exactly single-chip microcomputer controls mobile phone control technology by AT instruction.
In the present embodiment, each circuit and device blocks are prior art, just more do not speak more bright at this.
Figure 2 shows that a kind of workflow schematic diagram of the present embodiment, also can carry out the change of workflow according to demand, Fig. 2 is only as a kind of reference.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the flammable gas alarm based on GSM short message module, it is characterized in that, comprise Detection Circuit, the output terminal of this Detection Circuit is connected to filtering pre-amplification circuit, the output terminal of this filtering pre-amplification circuit is connected to master controller, and this master controller is connected with sound and light alarm and output circuit, input through keyboard circuit, display circuit and GSM interface circuit.
2. a kind of flammable gas alarm based on GSM short message module as claimed in claim 1, it is characterized in that, described master controller is single-chip microcomputer.
3. a kind of flammable gas alarm based on GSM short message module as claimed in claim 2, it is characterized in that, described single-chip microcomputer is STC90C514AD single-chip microcomputer.
4. a kind of flammable gas alarm based on GSM short message module as claimed in claim 1, is characterized in that, described Detection Circuit adopts catalytic combustion-type sensor.
5. a kind of flammable gas alarm based on GSM short message module as claimed in claim 1, is characterized in that, described GSM interface circuit adopts TC35i module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520305784.9U CN204632068U (en) | 2015-05-12 | 2015-05-12 | A kind of flammable gas alarm based on GSM short message module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520305784.9U CN204632068U (en) | 2015-05-12 | 2015-05-12 | A kind of flammable gas alarm based on GSM short message module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648420A (en) * | 2018-04-23 | 2018-10-12 | 温州巅锋电推剪有限公司 | A kind of fuel gas initial stage leak detection and exhaust system |
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2015
- 2015-05-12 CN CN201520305784.9U patent/CN204632068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648420A (en) * | 2018-04-23 | 2018-10-12 | 温州巅锋电推剪有限公司 | A kind of fuel gas initial stage leak detection and exhaust system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160512 |
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| CF01 | Termination of patent right due to non-payment of annual fee |