CN101996472A - Portable multiple-gas alarm instrument - Google Patents
Portable multiple-gas alarm instrument Download PDFInfo
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- CN101996472A CN101996472A CN2009100908843A CN200910090884A CN101996472A CN 101996472 A CN101996472 A CN 101996472A CN 2009100908843 A CN2009100908843 A CN 2009100908843A CN 200910090884 A CN200910090884 A CN 200910090884A CN 101996472 A CN101996472 A CN 101996472A
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Abstract
The invention relates to a portable multiple-gas alarm instrument which can simultaneously and continuously detect the concentration of CH4, O2, CO and H2S and can perform exceeding-limit alarm. A 8-bit microcontroller is used by a detector as a control unit, a high-precision detecting element which has high sensitivity and high response speed is used, and a 128*64 liquid crystal screen which is in a wide temperature range and has clear and reliable display is used. When the concentration of the gas to be detected in the environment is equal to or greater than or less than the preset alarm value, the detector immediately sends out the acousto-optic sound to remind people of taking safety measures in time to ensure the safety of life and property.
Description
Affiliated technical field
The present invention relates to a kind of detecting instrument of gas, the instrument that can report to the police behind especially a kind of CH4 of detection, O2, CO, 4 kinds of gases of H2S.
Background technology
At present, the mode of the instrument of the detection of known gas and gas detection has a lot.For example number of patent application is 87205183, patent name is to disclose a kind of portable semiconductor device principle type combustible gas detector in the combustible gas detector, mainly by shell, the gas sensory sensor, control circuit, sound, optical alarm circuit, circuit working display circuit and power circuit constitute.Simple in structure, the detection sensitivity height, preheating time is short, and the response time is fast, and release time is short, and is easy to use, reliable and stable, need not keep in repair basically.Be applicable to the fast detecting of inflammable gas micro-leakage of field, station, workshop equipment, device and the pipeline of industries such as natural gas, coal gas, chemical industry, electronics, communication.Number of patent application is 88107746, patent name is to disclose a kind of equipment that is used for detecting in the absorption cell predetermined gas in the method and apparatus of gas detection, conduct the absorption cell that outputs to of infrared laser light source, control conduction output changes between at least two wavelength in time, one of two wavelength are easier of gas absorption than another, the size of this wavelength after the conduction is corresponding to detected gas, the output of laser instrument may comprise two frequencies, and a light filter can make these two frequencies alternately pass through.On the other hand, the output of this laser instrument also can be single-frequency, and this frequency sweeping is crossed the frequency that gas absorbs easily.Number of patent application is 90205189, and number of patent application is to disclose a kind of inflammable gas detection alarm device in the inflammable gas detection alarm device, shell, gas sensory sensor is arranged, warning circuit, signal deteching circuit, power circuit, executive circuit.Signal deteching circuit is the multichannel testing circuit that light emitting diode and voltage drop element are formed, and uses contactless thyristor in the executive circuit, the testing circuit practicality of this alarm, simple, economical, adopt contactless thyristor safe and reliable.This alarm volume is little, is easy to carry, easily promotes.Above gas detecting instrument is the instrument or the method for existing disclosed detection, has only in these disclosed instruments or the method to be a kind of detection of gas or the detected gas device of not reporting to the police just.
Summary of the invention
In order to overcome can not detecting multiple gases and not having the deficiency of warning device of existing gas detecting instrument and detection method, the detection alarm instrument that the invention provides one kind of multiple gases is continuous detecting CH4, O2, CO, the H2S concentration of totally 4 kinds of gases simultaneously, but and overload alarm.
The technical solution adopted for the present invention to solve the technical problems is: analyzer adopts 8 8-digit microcontrollers as control module, adopts the high Precision Detection element, and is highly sensitive, response speed is fast, and screen adopts the 128*64 liquid crystal of wide temperature range, and clear display is reliable.Alarm is made up of housing, LCD panel, carrier catalyst element, hydrogen sulfide sensor, carbon monoxide transducer, oxygen sensor, LED warning transparency window, function key, start key, charge port.The output of apparatus for determination of gas send CPU to handle after signal amplification, A/D conversion, calculates concentration value and is shown by liquid crystal display.CPU monitors cell voltage, shows the time in good time that corresponding processing is also made in alarm condition and keyboard input simultaneously when normal detected state.During charging, adopt the syllogic Charge Management, whole charging process is also indicated by cpu monitor, is full of automatically to stop.Analyzer adopts nature diffusion sampling mode, and displayed value is three valid readings, represents measured value with the percentage volume ratio, and can represent the plus or minus of displayed value.Resolution is not less than methane 0.01%CH4 respectively, oxygen 0.1%O2, sulfuretted hydrogen 1 * 10-6H2S, carbon monoxide 1 * 10-6CO.Analyzer has sound and light of alarm and warning self-checking function.Above prescribing a time limit on the measurement range, analyzer has the function of protection carrier catalyst element, and makes the displayed value of analyzer maintain the state of transfiniting at methane concentration.
The invention has the beneficial effects as follows, the multiple gases alarm is continuous detecting CH4, O2, CO, the H2S concentration of totally 4 kinds of gases simultaneously, but and overload alarm, analyzer adopts 8 8-digit microcontrollers as control module, adopt the high Precision Detection element, highly sensitive, response speed is fast, screen adopts the 128*64 liquid crystal of wide temperature range, clear display is reliable.When the concentration that detects gas to be measured in the environment is at or above or below when presetting alarming value, alarm sends acousto-optic sound immediately, in time takes safety measures to remind us, ensures the safety of life, property.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
1. upper shells among the figure, 2. lower house, 3. LCD panel, 4. carrier catalyst element, 5. hydrogen sulfide sensor, 6. carbon monoxide transducer, 7. oxygen sensor, 8.LED warning transparency window, 9. function key, 10. start key, 11. crocodile clips, 12. nameplates, 13. charge port.
Embodiment
In environment temperature is 0～40 ℃, sea level elevation is no more than 2000m, ambient atmosphere pressure is 80kPa～106kPa, surrounding air relative humidity is not more than 95% (25 ℃ time), the damp mixture is arranged, but do not have in the environment of significantly vibrations and impact, the corrosive gas that does not have the insulation of destroying or steam, in the place that nothing is dripped, the warning instrument can add animal cortex leather sheath in use.The analyzer pattern is elegant in appearance.Analyzer adopts nature diffusion sampling mode, and displayed value is three valid readings, represents measured value with the percentage volume ratio, and can represent the plus or minus of displayed value.Resolution is not less than methane 0.01%CH4 respectively, oxygen 0.1%O2, sulfuretted hydrogen 1 * 10-6H2S, carbon monoxide 1 * 10-6CO.Analyzer has sound and light of alarm and warning self-checking function.Above prescribing a time limit on the measurement range, analyzer has the function of protection carrier catalyst element, and makes the displayed value of analyzer maintain the state of transfiniting at methane concentration.The output of apparatus for determination of gas send CPU to handle after signal amplification, A/D conversion, calculates concentration value and is shown by liquid crystal display.CPU monitors cell voltage, shows the time in good time that corresponding processing is also made in alarm condition and keyboard input simultaneously when normal detected state.During charging, adopt the syllogic Charge Management, whole charging process is also indicated by cpu monitor, is full of automatically to stop.
Claims (5)
1. one kind of multiple gas alarm instrument, comprise housing, LCD panel, carrier catalyst element, hydrogen sulfide sensor, carbon monoxide transducer, oxygen sensor composition, it is characterized in that: continuous detecting CH4, O2, CO, H2S be the concentration of totally 4 kinds of gases, but and overload alarm, analyzer adopts 8 8-digit microcontrollers as control module, and screen adopts the 128*64 liquid crystal of wide temperature range.
2. multiple gases alarm according to claim 1, it is characterized in that: the scope of measuring when measuring CH4 gas is at (0.00-4.00) %CH4, and reporting to the police is provided with scope 0.5%CH4～4.00%CH4, alarm set point 1.00%CH4, warning error ± 0.05%CH4, the response time is 20s.
3. multiple gases alarm according to claim 1 is characterized in that: measurement range (0～30) %O2 when measuring O2, and report to the police scope 16%O2～19.5%O2 is set, alarm set point 18%O2, warning error ± 0.1%O2, the response time is 20s.
4. multiple gases alarm according to claim 1, it is characterized in that: measurement range (100～the 500) * 10-6CO when measuring CO, reporting to the police is provided with scope 25 * 10-6CO～100 * 10-6CO, alarm set point 24 * 10-6CO, warning error ± 1 * 10-6CO, the response time is 60s.
5. multiple gases alarm according to claim 1, it is characterized in that: measurement range (0～the 100) * 10-6H2S when measuring H2S, reporting to the police is provided with scope 5 * 10-6H2S～15 * 10-6H2S, alarm set point 10 * 10-6H2S, warning error ± 3 * 10-6H2S, the response time is 45s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100908843A CN101996472A (en) | 2009-08-11 | 2009-08-11 | Portable multiple-gas alarm instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100908843A CN101996472A (en) | 2009-08-11 | 2009-08-11 | Portable multiple-gas alarm instrument |
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| Publication Number | Publication Date |
|---|---|
| CN101996472A true CN101996472A (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100908843A Pending CN101996472A (en) | 2009-08-11 | 2009-08-11 | Portable multiple-gas alarm instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440737A (en) * | 2013-09-03 | 2013-12-11 | 宁夏东旭太阳能科技有限公司 | Work card type solar gas early warning device |
-
2009
- 2009-08-11 CN CN2009100908843A patent/CN101996472A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440737A (en) * | 2013-09-03 | 2013-12-11 | 宁夏东旭太阳能科技有限公司 | Work card type solar gas early warning device |
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Addressee: Yang Xiaoyan Document name: Notification of Passing Examination on Formalities |
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Application publication date: 20110330 |