CN2786618Y - Sensor for visible light ozone thickness examining equipment - Google Patents
Sensor for visible light ozone thickness examining equipment Download PDFInfo
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- CN2786618Y CN2786618Y CN 200520081604 CN200520081604U CN2786618Y CN 2786618 Y CN2786618 Y CN 2786618Y CN 200520081604 CN200520081604 CN 200520081604 CN 200520081604 U CN200520081604 U CN 200520081604U CN 2786618 Y CN2786618 Y CN 2786618Y
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- ozone
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- absorption chamber
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Abstract
The utility model relates to a sensor for a concentration detecting device for the ozone of visible light, which belongs to the field of ozone concentration measuring devices. The utility model is characterized in that the sensor comprises an outer shell (3) and an ozone absorption chamber (11) in the outer shell (3), wherein an ozone air inlet (4) and an ozone air outlet (2) are arranged on the ozone absorption room (11); both ends of the ozone absorption chamber (11) are sealed by a sealing strip, pressing plates (8) and (14), and plug heads (10) and (12); a light emitting tube (7) is right opposite to a light receiving tube (15); working circuit boards (6) and (16) are fixedly arranged in the outer shell (3) by end caps (5) and (17); an electric connecting plug (1) is fixedly connected with the end caps (17). The utility model is provided with a light source which adopts an ordinary light emitting diode, and the light receiving tube is a photodiode. The utility model has the advantages that the service life is more than 100 thousand hours; the price of the utility model is very low, which is only equivalent to hundredth to thousandth of the price of an ultraviolet light source.
Description
Technical field
Sensor for visible ozone thickness detector belongs to visible absorption method ozone concentration measurer device field.
Background technology
Well-known ozone has very strong absorption to wavelength in the ultraviolet ray of 200～280nm, and therefore the ozone concentration detection device of many manufacturer production adopts uItraviolet absorption methods, with this method the absorption chamber size can be done very little, make the pick-up unit compact.What China used at present mainly is import equipment or the domestic mounting equipment of import critical component, but also exist many defectives with this method, for example present high stable performance ultraviolet light source price height that can provide and life-span are short, and the steady operation life-span was difficult to break through 10,000 hours at several thousand hours; A uItraviolet absorption methods ozone concentration detection device price is difficult to popularize and uses several ten thousand to tens0000.
The utility model content
Prove through repetition test, the absorption spectrum of ozone is except that ultraviolet wave band has very strong absorption, visible light wave range at 440～750nm has more weak absorption, but corresponding photoelectric technology development is quite ripe in this wave band, and light source can adopt LED light emitting diode or LD laser diode, and serviceable life was greater than 100,000 hours, price is very cheap, only be equivalent to more than one percent of ultraviolet light source and arrive several per milles, power consumption also greatly reduces simultaneously, has only more than one percent.Visible light sensor is photodiode or photoelectric cell.Suitable serviceable life with UV sensor, but price has only 1/tens of UV sensor.
The technical problems to be solved in the utility model is: overcome the problem that prior art exists, a kind of simple in structure, long service life is provided, greater than 100,000 hours, the sensor for visible ozone thickness detector that price is very cheap, performance is higher than uItraviolet absorption methods.
The technical scheme that its technical matters that solves the utility model adopts is: this sensor for visible ozone thickness detector, it is characterized in that: comprise shell, ozone absorption chamber in the enclosure, the ozone absorption chamber is provided with ozone air intake opening and ozone outlet, diaphragm seal is passed through at ozone absorption chamber two ends, pressing plate, plug sealing, light-emitting tube and light receiving tube are fixing in the enclosure by end cap over against, its operating circuit plate, are electrically connected plug and end cap is connected.Its principle is: light-emitting tube 7 and light receiving tube 15 and operating circuit are at the two ends of ozone absorption chamber 11; The light that light-emitting tube 7 sends constant intensity arrives light receiving tube 15 through ozone absorption chamber 11, the light intensity value that receives during ozone absorption chamber 11 ozone frees is A0, its part light is absorbed by ozone when in the ozone absorption chamber 11 ozone being arranged, the light intensity that light receiving tube 15 receives will reduce that (amplitude of the high more reduction of ozone concentration is big more, the amplitude of the low more reduction of ozone concentration is more little), the light intensity value of this moment is A1, by the difference of intensity variation (A0-A1) and the length value of ozone absorption chamber 11, can calculate the concentration of ozone.
Diaphragm seal is transparent glass sheet or light reflection diaphragm seal, and its effect is with the sealing of ozone absorption chamber, prevents that ozone from leaking from two ends.
Light-emitting tube is LED light emitting diode or LD laser diode.Light receiving tube is photodiode or photoelectric cell.Transmit and receive visible light.
Light-emitting tube and light receiving tube also can be arranged on the same end of ozone absorption chamber, and the diaphragm seal of the relative end of this structured light power valve is a light reflection diaphragm seal.The light that light-emitting tube is launched arrives light receiving tube by the reflection of light reflection diaphragm seal.
Compared with prior art, the beneficial effect that the utility model had is: the light source of this sensor for visible ozone thickness detector adopts common LED light emitting diode or LD laser diode, serviceable life was greater than 100,000 hours, price is very cheap, only be equivalent to more than one percent of ultraviolet light source and arrive several per milles, power consumption also greatly reduces simultaneously, has only more than one percent.Visible light sensor adopts photodiode or photoelectric cell, and serviceable life and UV sensor are suitable, but price has only 1/tens of UV sensor.Other performance all is higher than the uItraviolet absorption methods sensor.
Description of drawings
Fig. 1 is that the utility model embodiment 1 structure is cutd open and shown synoptic diagram;
Fig. 2 is the contour structures simplified schematic diagram of Fig. 1 embodiment 1;
Fig. 3 is embodiment 2 structural representation sketches of the present utility model.
Fig. 1-the 3rd, two most preferred embodiments of the present utility model.Wherein: 1 is electrically connected plug 2 ozone outlets 3 shells 4 ozone air inlets 5,17 end caps 6,16 wiring boards 7 light- emitting tubes 9,13 transparent glass sheets 11 ozone absorption chambers 10,12 plugs 8,14 pressing plates 15 light receiving tubes 18 light reflection diaphragm seal.
Shown in Fig. 1-2: embodiment 1 structure is cutd open and is shown and dimension sketch.Shell 3 is a tubulose, ozone absorption chamber 11 is that tubular diameter is less than shell 3, be sleeved in the shell 3, fill ozone gas in the ozone absorption chamber 11, ozone absorption chamber 11 front ends top is provided with ozone air intake opening 4, the top, rear end is provided with ozone outlet 2, ozone absorption chamber 11 two ends are by circular pressing plate 8,14, transparent glass sheet 9,13, plug 10,12 sealings, transparent glass sheet 9,13 1 ends are installed between pressing plate 14 and the plug 12, the other end is installed between pressing plate 8 and the plug 10, prevents that ozone from leaking from two ends.Plug 10,12, design is porose in the middle of the pressing plate 8,15, light-emitting tube 7 is installed in the hole of pressing plate 8 over against transparent glass sheet 9, plug 10 holes and ozone absorption chamber 11 1 ends, light receiving tube 15 is installed in the hole of pressing plate 14 other end over against transparent glass sheet 13, plug 12 holes and ozone absorption chamber 11, its operating circuit plate 6,16 is fixed in the shell 3 by end cap 5,17, is electrically connected plug 1 and is connected with end cap 17.Its principle is: light-emitting tube 7 and light receiving tube 15 and operating circuit are at the two ends of ozone absorption chamber 11; The light that light-emitting tube 7 sends constant intensity arrives light receiving tube 15 through ozone absorption chamber 11, the light intensity value that receives during ozone absorption chamber 11 ozone frees is A0, its part light is absorbed by ozone when in the ozone absorption chamber 11 ozone being arranged, the light intensity that light receiving tube 15 receives will reduce that (amplitude of the high more reduction of ozone concentration is big more, the amplitude of the low more reduction of ozone concentration is more little), the light intensity value of this moment is A1, by the difference of intensity variation (A0-A1) and the length value of ozone absorption chamber 11, can calculate the concentration of ozone.Light-emitting tube 7 is the LED light emitting diode, adopts constant-current source circuit to drive and makes luminous intensity stable.Light receiving tube 15 is a 2DU series photodiode.Effect is basic identical when doing light source with orange red laser diode.Light receiving tube also can adopt photoelectric cell.
With reference to shown in Figure 3: embodiment 2 construction profile sketches.Wherein, light-emitting tube 7 and light receiving tube 15 are at the same end of ozone absorption chamber 11, and 13 is the transparent sealing sheet, and 18 are light reflection diaphragm seal, the light that light-emitting tube 7 sends constant intensity arrives the part arrival light receiving tube 15 that light reflection diaphragm seal 18 back reflections return, and makes effective optical path length increase.Reduce absorption chamber length for can the sample method of this light reflection of the application scenario of ozone absorption chamber 11 length limited systems.It should be noted that will carry out light between light-emitting tube 7 and the light receiving tube 15 isolates, avoid the light of reflection directly to arrive light receiving tube 15, the sampling laser diode is done light source and is easy to accomplish.All the other are with embodiment 1.
For different measurement of concetration scopes, need different ozone absorption chamber length to guarantee enough measuring accuracy, the application scenario that concentration is low needs long ozone absorption chamber, and the occasion that concentration is high needs short ozone absorption chamber.But the method for the application scenario sampled light line reflection of ozone absorption chamber length limited system reduces ozone absorption chamber length.
Claims (6)
1, sensor for visible ozone thickness detector, it is characterized in that: comprise shell (3), the ozone absorption chamber (11) in shell (3), ozone absorption chamber (11) is provided with ozone air intake opening (4) and ozone outlet (2), ozone absorption chamber (11) two ends are by diaphragm seal, pressing plate (8), (14), plug (10), (12) sealing, light-emitting tube (7) and light receiving tube (15) over against, its operating circuit plate (6), (16) are fixed in the shell (3) by end cap (5), (17), are electrically connected plug (1) and are connected with end cap (17).
2, sensor for visible ozone thickness detector according to claim 1 is characterized in that: diaphragm seal is transparent glass sheet (9), (13).
3, sensor for visible ozone thickness detector according to claim 1 and 2 is characterized in that: light-emitting tube (7) is the LED light emitting diode, and light receiving tube (15) is a photodiode.
4, sensor for visible ozone thickness detector according to claim 1 and 2 is characterized in that: light-emitting tube (7) is the LED light emitting diode, and light receiving tube (15) is a photoelectric cell.
5, sensor for visible ozone thickness detector according to claim 1 and 2 is characterized in that: light-emitting tube (7) is the LD laser diode.
6, sensor for visible ozone thickness detector according to claim 1, it is characterized in that: when light-emitting tube (7) and light receiving tube (15) are arranged on the same end of ozone absorption chamber (11), diaphragm seal is transparent glass sheet (13), and relative diaphragm seal is a light reflection diaphragm seal (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520081604 CN2786618Y (en) | 2005-03-18 | 2005-03-18 | Sensor for visible light ozone thickness examining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520081604 CN2786618Y (en) | 2005-03-18 | 2005-03-18 | Sensor for visible light ozone thickness examining equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786618Y true CN2786618Y (en) | 2006-06-07 |
Family
ID=36775193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520081604 Expired - Fee Related CN2786618Y (en) | 2005-03-18 | 2005-03-18 | Sensor for visible light ozone thickness examining equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786618Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266974A (en) * | 2014-10-21 | 2015-01-07 | 赵怀军 | Forced airflow type open air chamber |
-
2005
- 2005-03-18 CN CN 200520081604 patent/CN2786618Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266974A (en) * | 2014-10-21 | 2015-01-07 | 赵怀军 | Forced airflow type open air chamber |
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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: 20060607 Termination date: 20130318 |