CN2862024Y - Atmospheric ion continuous determinator - Google Patents
Atmospheric ion continuous determinator Download PDFInfo
- Publication number
- CN2862024Y CN2862024Y CN 200520088520 CN200520088520U CN2862024Y CN 2862024 Y CN2862024 Y CN 2862024Y CN 200520088520 CN200520088520 CN 200520088520 CN 200520088520 U CN200520088520 U CN 200520088520U CN 2862024 Y CN2862024 Y CN 2862024Y
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- China
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- plate
- continuous determination
- determination instrument
- ion method
- heating resistor
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Abstract
The utility model relates to an atmospheric ion continuous test device, comprising a parallel plate-type polarization plate for continuous voltage polarization, a capture plate, a micro current meter connecting to the capture plate, a fan positioned between the polarization plate and the capture plate and on the tested air channel side, and a micro current amplification plate connected between the capture plate and the micro current meter by a cable and arranged in shielding device. The test device can effectively insulate signal noise, eliminate temperature/moisture/electromagnetic interference, solve the current drifting problem thus incurred, and improve measurement precision.
Description
(1) technical field
The utility model belongs to the measurement mechanism of charged particle in the air, a kind of specifically air ion METHOD FOR CONTINUOUS DETERMINATION instrument.
(2) background technology
The instrument of measuring the airion concentration size at present mostly is the airion concentration tester.Air ion is transferred to the electric charge that carries opposed polarity separately on polarising sheet and the entrapment plate under the effect of polarized electric field between polarising sheet and the entrapment plate, forms the concentration that one electric current also calculates the air intermediate ion thus.Owing to relate to the measurement of Weak current, when adopting ion trap and little current amplification circuit to measure, needs along with the monitoring of airion concentration on-line continuous, because air humidity varies influences testing result, it is more and more important that the insulativity of little current amplification circuit then seems, for this reason, the way that heating was dried before the manufacturer that has adopted and tests is to improve insulativity; What also have encapsulates whole amplifying circuit with materials such as epoxy resin, though can solve the insulativity problem like this, troublesome poeration, and because encapsulation can not be taken apart after finishing again, in case break down, magnification circuit plate will be scrapped, and causes waste.Because enlargement ratio is high especially, even reaches 10
12Doubly, except needs improved the insulativity of amplifying circuit and printed board, external electromagnetic field also became very serious to the direct interference of amplifying circuit.The working environment of air ion METHOD FOR CONTINUOUS DETERMINATION instrument is relatively more abominable usually, and the existence of signal noise, temperature, humidity and outside electromagnetic interference etc. easily causes the electric current drift excessive, thereby influences measuring accuracy.
(3) summary of the invention
The purpose of this utility model is the shortcoming that overcomes in the above-mentioned technology, proposes a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument.Eliminate temperature, humidity and outside electromagnetic interference, solve the circuit zero point drift problem that causes thus.
The purpose of this utility model is realized by following technical scheme: a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument, comprise the parallel plate type that connects polarizing voltage polarising sheet 3, entrapment plate 1, connect little reometer 6 of entrapment plate 1 and the blower fan 4 of tested air duct one end between polarising sheet 3 and entrapment plate 1, it is characterized in that amplifying plate 8, be installed in the shield assembly 5 by little electric current that cable 11 is connected between entrapment plate 1 and the little reometer 6.
The polarity that changes polarizing voltage can change the polarity of the ion that traps on the entrapment plate 1, thereby changes the polarity of measured ion.
Thermostat 16 is installed in the below of shielding box 7, and heat insulating block 12 is wrapped in the periphery of heating resistor 9, and heating resistor 9 is connected with temp control switch 10.
Little electric current amplifies plate 8 to be supported by amplifying plate pillar 13, and is fixedly connected on the amplification plate pillar 13.
Heating resistor 9 is fixed in the groove of heat insulating block 12 by heating resistor pressing plate 15, and is fixed in the thermostat 16.
The temperature of heating resistor 9 is controlled at 45 ℃ ± 3 ℃.
The utility model has the advantages that: can the effective isolation signal noise, eliminate temperature, humidity and electromagnetic interference (EMI), solve the electric current drift problem that causes thus, improve measuring accuracy.
(4) description of drawings
Fig. 1 is a structural principle synoptic diagram of the present utility model,
Fig. 2 is the structural representation of the utility model shield assembly,
Fig. 3 is the side view of Fig. 2.
(5) embodiment
By axial flow blower 4 with certain wind speed with tested air suction and through between parallel-plate ion entrapment plate 1 and the polarising sheet 3, airborne negative ions is then respectively to polarising sheet 3 and entrapment plate 1 deflection, they with electric charge transfer to polarising sheet 3 and entrapment plate 1.Wherein on the entrapment plate with electric charge form electric current, amplify plate 8, little reometers 6 to ground through the little electric currents in the shield assembly 5; Electric current on the polarising sheet then forms loops and compoundly falls through electric battery 2.The polarity that changes electric battery 2 can change the polarity of the ion that traps on the entrapment plate 1, thereby changes the polarity of measured ion.For increasing the area of collecting plate, improve measuring accuracy and resolution, take the version of multipole plate parallel connection, and pole plate is carried out gold-plated processing, to strengthen corrosion resistivity.Because the gordian technique of this instrument is the processing and amplifying of feeble signal, adopted the preposition processing and amplifying module of high-precision low-drift to carry out signal Processing in design, and whole detection signal is shielded little electric current amplified plate 8 and be installed in the shield assembly of forming by shielding box 7 and thermostat 16 5.The dual measure of take electromagnetic screen and heated at constant temperature simultaneously, drying.
The first half of shield assembly 5 is a shielding box 7, shielding box 7 can be cylindrical, also can be other shapes such as rectangle, little electric current amplifies plate 8 and is installed in the shielding box 7, be fixed on the amplification plate pillar 13 by amplifying plate fixed screw 14, concentric cable 11 passes outside the shielding box 7, and little electric current amplifies plate 8 and is connected with entrapment plate 1, little reometer 6 circuitries by concentric cable 11; Thermostat 16 is installed in the below of shielding box 7, corresponding with the shape of shielding box 7, heat insulating block 12 is wrapped in the periphery of heating resistor 9, heating resistor 9 is fixed in the groove of heat insulating block 12 by heating resistor pressing plate 15 by screw 17, and be connected with temp control switch 10, the temperature of heating resistor 9 is controlled at 45 ℃ ± 3 ℃.
Complete machine adopts the CPU of 51 series monolithics as instrument, and selects for use high-precision a/d converter as the signal mode number conversion.Carry out for convenience the continuous coverage of air ion concentration under the unmanned situation, sampling is controlled automatically by single-chip microcomputer.The integral point measuring process is: integral point begins, and about heating 1min, cooling is stablized about 2min earlier, then to negative ion school zero 1min.School zero is finished rear fan 4 and is started, and extraction fan is opened automatically, begins to measure negative ion concentration 1min; After then fan cuts out 1min, carry out the zero point correction of positive ion, the time is 1min.Extraction fan is opened once more automatically then, begins to measure cation concentration 1min; Last fan cuts out, and finishes this automatic measurement.Data are stored in the data-carrier store of instrument automatically.
Claims (6)
1, a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument, comprise the parallel plate type polarising sheet (3) that connects polarizing voltage, entrapment plate (1), connect little reometer (6) of entrapment plate (1) and be positioned at polarising sheet (3) and entrapment plate (1) between the blower fan (4) of tested air duct one end, it is characterized in that amplifying plate (8), be installed in the shield assembly (5) by little electric current that cable (11) is connected between entrapment plate (1) and the little reometer (6).
2, a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument according to claim 1 is characterized in that the thermostat (16) in the shield assembly (5) is installed in the below of shielding box (7).
3, a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument according to claim 1 is characterized in that cable (11) is a concentric cable and passes that shielding box (7) is outer to be connected with circuitry.
4, a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument according to claim 2 is characterized in that the heat insulating block (12) in the thermostat (16) is wrapped in the periphery of heating resistor (9), and heating resistor (9) is connected with temp control switch (10).
5, a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument according to claim 1 and 2 is characterized in that little electric current amplifies plate (8) and supports by amplifying plate pillar (13), and is fixedly connected on the amplification plate pillar (13).
6, a kind of air ion METHOD FOR CONTINUOUS DETERMINATION instrument according to claim 4 is characterized in that heating resistor (9) is fixed in the groove of heat insulating block (12) by heating resistor pressing plate (15), and is fixed in the thermostat (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520088520 CN2862024Y (en) | 2005-10-25 | 2005-10-25 | Atmospheric ion continuous determinator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520088520 CN2862024Y (en) | 2005-10-25 | 2005-10-25 | Atmospheric ion continuous determinator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2862024Y true CN2862024Y (en) | 2007-01-24 |
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ID=37659655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520088520 Expired - Fee Related CN2862024Y (en) | 2005-10-25 | 2005-10-25 | Atmospheric ion continuous determinator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2862024Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928994A (en) * | 2016-04-26 | 2016-09-07 | 徐先 | Fully-automatic air ion test method and apparatus thereof |
| CN110487886A (en) * | 2019-09-11 | 2019-11-22 | 北京圣通和科技有限公司 | Air ion detector and its calibration method |
| CN111982970A (en) * | 2020-08-21 | 2020-11-24 | 大连理工大学 | Small-size portable air ion detector |
-
2005
- 2005-10-25 CN CN 200520088520 patent/CN2862024Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928994A (en) * | 2016-04-26 | 2016-09-07 | 徐先 | Fully-automatic air ion test method and apparatus thereof |
| CN110487886A (en) * | 2019-09-11 | 2019-11-22 | 北京圣通和科技有限公司 | Air ion detector and its calibration method |
| CN111982970A (en) * | 2020-08-21 | 2020-11-24 | 大连理工大学 | Small-size portable air ion 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: 20070124 Termination date: 20101025 |