A kind of multi-wavelength complex spectrum analogy method mobile gas detection alarm device
Technical field
The present invention relates to a kind of gas detection alarm device, especially relate to a kind of multi-wavelength complex spectrum analogy method mobile gas detection alarm device.
Background technology
Commercial production is an important sources of atmospheric pollution.The pollutant kind be discharged in air is various, has flue dust, sulfur oxide, nitrogen oxides, organic compound, halogenide, hydrocarbon etc.Wherein common toxic and harmful poisons different in kind by it, can be divided into:
1. irritative gas: refer to gas eye and respiratory mucosa being had to spread effect, it is the toxic gas that chemical industry often runs into.Modal have chlorine, ammonia, oxides of nitrogen, phosgene, hydrogen fluoride, sulphuric dioxide, sulfuric anhydride and dimethyl suflfate etc.
2. choke damp: refer to the toxic gas that can cause body anoxic, choke damp can be divided into simple choke damp, blood choke damp and cell choke damp.As the steam, hydrogen cyanide, sulfuretted hydrogen etc. of nitrogen, methane, ethane, ethene, carbon monoxide, nitrobenzene.
Because toxic and harmful produces serious harm to human body and environment, therefore these gases to be detected in real time and warning seems particularly important.
Detect in real time toxic and harmful and report to the police at present and mainly utilize conventional light splitting type infrared absorption spectrometer, this spectrometer is mainly used for compound qualitative analysis, only possesses certain quantitative function.It adopts prism or grating as monochromator, produces the monochromatic light exposure sample of continuous wavelength, the infrared spectrum obtained and library of spectra check analysis, thus generic chemical structure.
Above-mentioned conventional light splitting type infrared absorption spectrometer is all Single wavelength simultaneously, the concentration of specific, selectable mensuration pure gas only.
For the above deficiency existed, the present invention proposes to utilize complex spectrum analogy method to realize gas detection alarm, and its critical component adopts non-spectral formula infrared receiver sensing unit, by infrared light supply, and air chamber, wavelength filter and infrared eye composition.Realize multi-wavelength combination and can detect SO
2, NO, CH
4, SF
6, the gas such as CO.
Summary of the invention
Object of the present invention is exactly provide a kind of structure simple to overcome defect that above-mentioned prior art exists, light firm, responds wavelength complex spectrum analogy method mobile gas detection alarm device fast.
Object of the present invention can be achieved through the following technical solutions: a kind of multi-wavelength complex spectrum analogy method mobile gas detection alarm device, is characterized in that, comprise
Sampling head: be made up of filter cleaner, telescopic joint and magnetic absorption base;
Membrane pump: for manometric diaphragm type air pump, its one end connects the sampling head other end and connects multiple infrared line absorber;
Multiple infrared line absorber: by constant temperature oven, air preheat coil pipe, serial red outer line absorption unit and throttling valve composition; Air preheat coil pipe, serial red outer line absorption unit is placed in constant temperature oven, the throttling valve that membrane pump is connected air preheat coil pipe, serial red outer line absorption unit successively by pipeline and is arranged on outside constant temperature oven;
Power supply and control signal harvester: connect multiple infrared line absorber and computing machine respectively;
Gps antenna: connect computing machine;
Whether abnormal computing machine: the position residing for demarcating by gps antenna navigation is instant, and the absorption intensity of the gas variation characteristic information of normal condition with different wave length at that time being compared one by one, to obtain conclusion.
Described device is vehicle apparatus, and sampling head is placed in roof, and membrane pump, multiple infrared line absorber, power supply and control signal harvester and computing machine are placed in car.
Described filter cleaner, with air intake opening, regulates the height of air intake opening by telescopic joint.
Described serial red outer line absorption unit is made up of infrared remote receiver and infrared emitter and optical filter; Gas flow to be measured, through different wave length absorptive unit, shows different absorption intensities, and this is relevant with the content of different component in gas, can the display of continuous print curve.
Described serial red outer line absorption unit is arranged in pairs or groups according to selecting different wavelength and number infrared remote receiver and infrared emitter.
Compared with prior art, the present invention has the following advantages:
1) response rapidly.Instant data display and processing can be accomplished.Comparing by changing data with the absorption intensity of the various specific wavelength of normal condition stored, making and judging timely.
2) structure is simple.Degassing pump is outer without moving parts, is easy to safeguard, with low cost.
3) light firm.Can use without the need to reequiping vehicle, air inlet and exhaust piper is by turning down vehicle window interface.
4) adopt LED infrared light supply, energy consumption is low, and the life-span is long.The direct current 12V power supply in car is used to meet the demands.
5) easy and simple to handle.Carry out data by computing machine to compare with information.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
In figure: filter cleaner 1, casing coupling 2, magnetic absorption base 3, tensimeter 4, preheat coil 5, diaphragm type air pump 6, constant temperature oven 7, power supply and control signal harvester 8, gps antenna 9, infrared remote receiver 10, infrared emitter and optical filter 11, pressure stable throttle valve 12 and computing machine 13.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
Apparatus of the present invention schematic diagram, as Fig. 1, comprising:
Sampling head: be made up of filter cleaner 1, telescopic joint 2 and magnetic absorption base 3; Sampling head is placed in roof, and filter cleaner, with import, can regulate the height of air intake opening within the specific limits by telescopic joint according to the speed of a motor vehicle or other condition;
Membrane pump: be the diaphragm type air pump 6 with tensimeter 4, its one end connects the sampling head other end and connects multiple infrared line absorber;
Multiple infrared line absorber: by constant temperature oven 7, air preheat coil pipe 5, serial red outer line absorption unit and throttling valve 12 form; Air preheat coil pipe 5, serial red outer line absorption unit is placed in constant temperature oven 7, the throttling valve 12 that membrane pump is connected air preheat coil pipe 5, serial red outer line absorption unit successively by pipeline and is arranged on outside constant temperature oven; Described serial red outer line absorption unit is made up of infrared remote receiver 10 and infrared emitter and optical filter 11; Gas flow to be measured, through different wave length absorptive unit, shows different absorption intensities, and this is relevant with the content of different component in gas, can the display of continuous print curve.Described serial red outer line absorption unit is arranged in pairs or groups according to selecting different wavelength and number infrared remote receiver and infrared emitter.
Power supply and control signal harvester 8: connect multiple infrared line absorber and computing machine 13 respectively;
Gps antenna 9: connect computing machine 13;
Whether abnormal computing machine 13: to be navigated the position residing for instant demarcation by gps antenna 9, and the absorption intensity of the gas variation characteristic information of normal condition with different wave length at that time compared one by one, to obtain conclusion.
Described device is vehicle apparatus, and membrane pump, multiple infrared line absorber, power supply and control signal harvester and computing machine are placed in car.
During use, undertaken by following steps:
Step (1): filter cleaner 1 will be comprised, telescopic joint 2, magnetic absorption base 3 be arranged on roof, and open gps antenna, and record current detection warning place.
Step (2): open constant temperature oven 7 and preheat coil 5, and set temperature is adjusted to suitable temperature, to guarantee that the gas detected condensation does not occur.
Step (3): the power supply opening all the other pumps and electron device, preheating, stablize 1-2 hour after, bleed and detect, according to preset gas signal intensity judge, the gas exceeded standard for signal intensity is reported to the police.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, all will drop in Claims scope of the present invention the change of the above embodiment, modification.