CN201548512U - Novel portable gasoline detector - Google Patents
Novel portable gasoline detector Download PDFInfo
- Publication number
- CN201548512U CN201548512U CN2009202517799U CN200920251779U CN201548512U CN 201548512 U CN201548512 U CN 201548512U CN 2009202517799 U CN2009202517799 U CN 2009202517799U CN 200920251779 U CN200920251779 U CN 200920251779U CN 201548512 U CN201548512 U CN 201548512U
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- signal
- circuit
- catalytic combustion
- gas
- combustion type
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Abstract
The utility model discloses a novel portable gasoline detector which comprises a gas collector, a gas pump, a catalytic combustion type sensor, a signal acquisition circuit, a signal shaping amplifying circuit, an A/D switching circuit, a computer system, a power supply module, an output driving circuit and a digital tube display screen, wherein the collected gas is transmitted into the catalytic combustion type sensor through the gas pump by the gas collector; an electrical signal is transmitted into the signal shaping amplifying circuit by the catalytic combustion type sensor, and then is transmitted into the A/D switching circuit after a stable analog signal is formed; and after the signal returns to the computer system, the result is output on the digital tube display screen by the output driving circuit. The novel portable gasoline detector is applicable to the places for producing, transporting and storing hazardous gases such as petroleum, chemical industry and the like, and is convenient for on-site inspection of safety inspectors.
Description
Technical field
The utility model belongs to the measurement mechanism field that environmental protection is used, and relates to a kind of novel portable gasoline detector, is used for detecting the concentration of air gasoline.
Background technology
Along with industrial expansion and growth in the living standard, automobile has become a kind of important vehicles, and car owning amount rapidly rises, and has brought the severe contamination problem of environment serious day by day for this reason.Gasoline is as a kind of volatile product oil, and airborne concentration directly affects production safety and personnel's health in the workspace for it.It is therefore a kind of that to respond quick, easy to operate detection alarm device be that this type of occasion is necessary.
Along with the particularly development of photoelectric technology of new and high technology, the means and the instrument that are applied to gas detection are more and more, and we can be divided into inflammable gas and toxic gas two classes to the gas that will detect, because its character is different with harm, detection means is also different.The key position of detector is a gas sensor, and gas sensor can be divided into gas sensor, the gas sensor that utilizes physical property that utilizes physicochemical property, gas sensor three classes of utilizing electrochemical properties from detecting on the principle.Though each gas detection sensor all has separately advantage and limitation, just petrochemical enterprise on-the-spot operating position is for many years compared, to the detection overall target of inflammable gas best be catalytic combustion method gas sensor.
Catalytic combustion type sensor is to produce the catalytic combustion type sensor component temperature when utilizing sensing element contact inflammable gas to raise, and measures the concentration of gas by detecting its changes in resistance.The advantage of catalytic combustion method gas sensor is precision height, good stability, and output signal and gas concentration linear relationship are good, is subjected to the influence of environment temperature and humidity little.
Summary of the invention
Problem to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of novel portable gasoline detector is provided, adopt catalytic combustion type combustible gas sensor and digital demonstration, response speed is fast, good reliability, antijamming capability is strong, the measuring accuracy height, and can be convenient for carrying.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of novel portable gasoline detector that provides according to the utility model, comprise the gas collecting device, air pump, catalytic combustion type sensor, signal acquisition circuit, signal integer amplifying circuit, A/D number conversion circuit, computer system, power module, output driving circuit, digitron display screen, it is characterized in that: described gas collecting device is transferred to catalytic combustion type sensor with the gas that collects by air pump, catalytic combustion type sensor is given signal integer amplifying circuit with electrical signal transfer, pass to the A/D change-over circuit after forming stable simulating signal, signal is exported the result by output driving circuit at digitron display screen after returning computer system.
The utility model compared with prior art has significant advantage and beneficial effect.
The utility model adopts catalytic combustion type sensor, measuring accuracy height, good reliability, response and release time are fast, and gas-selectively is good, and antijamming capability is strong, the digital quantity of the digital simultaneously demonstration gas concentration of surveying is directly perceived, clear, and simple to operate, durable.By adopting multinomial technology such as little process chip control, digital demonstration, on data processing, adopt several different methods such as software compensation, digital filtering, the gasoline that can detect various occasions accurately, rapidly leaks, and reminds the user in time to take precautions against as early as possible, avoids the loss of life and property.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model front panel figure
Wherein: 1, LCDs 2, reset button 3, sensor zero-setting button 4, danger early warning 5, warning against danger pilot lamp 6, pass warning 7, power light 8, power switch 9, air pump switch 10, air pump pilot lamp
Fig. 2 is a detection theory diagram of the present utility model
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof that foundation the utility model is provided, describe in detail as after.
See also Fig. 1～2, a kind of novel portable gasoline detector, comprise the gas collecting device, air pump, catalytic combustion type sensor, signal acquisition circuit, signal integer amplifying circuit, the A/D change-over circuit, computer system, power module, output driving circuit, digitron display screen, it is characterized in that: described gas collecting device is transferred to catalytic combustion type sensor with the gas that collects by air pump, catalytic combustion type sensor is given signal integer amplifying circuit with electrical signal transfer, pass to the A/D change-over circuit after forming stable simulating signal, signal is exported the result by output driving circuit at digitron display screen after returning computer system.
Method of operating:
Energized is pressed power switch and air pump switch, and novel portable gasoline detector is started working, and shows the concentration of detected gas on the liquid crystal display in real time.When gasoline concentration reached 20%LEL, instrument begins warning reported to the police, one of them buzzer call, yellow light-emitting diode flicker.When gasoline concentration reached 50%LEL, instrument begins warning reported to the police, another buzzer call, red light emitting diodes flicker.When alarm, keep current results, automatic clear behind the 30s by ShiShimonoseki alarm indication.To no longer preserve automatic clear not according to the alarm keys displayed value.Zero-setting button is used for regulating sensor makes output voltage arrive zero point, so that testing result is accurate.When system breaks down, press reset button, system reset, system's operate as normal.
Claims (1)
1. novel portable gasoline detector, comprise the gas collecting device, air pump, catalytic combustion type sensor, signal acquisition circuit, signal integer amplifying circuit, the A/D change-over circuit, computer system, power module, output driving circuit, digitron display screen, it is characterized in that: described gas collecting device is transferred to catalytic combustion type sensor with the gas that collects by air pump, catalytic combustion type sensor is given signal integer amplifying circuit with electrical signal transfer, pass to the A/D change-over circuit after forming stable simulating signal, signal is exported the result by output driving circuit at digitron display screen after returning computer system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202517799U CN201548512U (en) | 2009-12-17 | 2009-12-17 | Novel portable gasoline detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202517799U CN201548512U (en) | 2009-12-17 | 2009-12-17 | Novel portable gasoline detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548512U true CN201548512U (en) | 2010-08-11 |
Family
ID=42603688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202517799U Expired - Fee Related CN201548512U (en) | 2009-12-17 | 2009-12-17 | Novel portable gasoline detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808910A (en) * | 2013-12-06 | 2014-05-21 | 西安天厚电子技术有限责任公司 | Portable methanol gasoline detector |
-
2009
- 2009-12-17 CN CN2009202517799U patent/CN201548512U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808910A (en) * | 2013-12-06 | 2014-05-21 | 西安天厚电子技术有限责任公司 | Portable methanol gasoline detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20101217 |