CN2648438Y - Infrared moisture sensor - Google Patents
Infrared moisture sensor Download PDFInfo
- Publication number
- CN2648438Y CN2648438Y CN 03252915 CN03252915U CN2648438Y CN 2648438 Y CN2648438 Y CN 2648438Y CN 03252915 CN03252915 CN 03252915 CN 03252915 U CN03252915 U CN 03252915U CN 2648438 Y CN2648438 Y CN 2648438Y
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- receiving
- window
- receiving unit
- circuit board
- sending
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- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000005622 photoelectricity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract description 2
- 238000004886 process control Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005286 illumination Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000008844 regulatory mechanism Effects 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
The utility model discloses an infrared moisture sensor for detecting paper, which comprises a sending part and a receiving part, wherein the sending part is provided with a sending window, one side of the sending part, which is close to the sending window, is provided with a light modulation circuit board, and a semiconductor light emitting point array is fixed on the light modulation circuit board; the receiving part is provided with a receiving window and a receiving circuit board, a cassette for photoelectric receiving and conversion is arranged in the receiving part, and a branching unit arranged in the cassette is sequentially connected with a filter and a photoelectric tube. The utility model is used for scanning the paper web at the rear section of the paper making process and continuously monitoring the moisture parameter; the moisture conversion and display of different metering units can be realized by matching with an external calculation display unit or an industrial personal computer, a preceding-stage process control signal can be generated, the continuous monitoring and closed-loop quality control of the process flow are realized, the quality and the efficiency are improved, and the accuracy and the stability are high.
Description
1, technical field
The utility model belongs to and utilizes infrared light to test or the field of analysis of material, is specifically related to a kind of infrared moisture sensor.
2, background technology
Infrared moisture content sensing technology is to utilize hydrone the ultrared absorptivity of specific wavelength to be responded to the water cut of tested paper.Infrared moisture sensor infrared radiation paper is surveyed the current value that is illuminated two ultrared intensity of different wave length of paper transmission or reflection and converts two correspondences to, calculates the paper water cut for outside calculating display unit.
General infrared moisture sensor adopts halogen tungsten lamp to do light source more both at home and abroad, lead principle work by photosensitive electricity, need add higher detecting voltage, dark current is very big, serious with the drift that environment temperature and operating voltage change, the linear degree of output electric weight and illuminance relation is not high, also be subjected to the influence of environment light, thereby accuracy of measurement is not high.Name is called the utility model patent (application number: 01239776.8) disclose a kind of high precision Moisture Meter of " high precision infrared moisture meter ", this Moisture Meter comprises light source, motor, optical filtering modulation wheel, detector etc., the motor of this device is the rotating speed that is used for regulating the optical filtering modulation wheel, detector can not detect two wavelength simultaneously, so just brought the error of measuring, and the modulation that filters is discussed and motor has brought complex structure, safeguarded problems such as inconvenience, heaviness.
3, summary of the invention
The purpose of this utility model provides a kind of in the paper production technological process, photoelectricity flow pattern infrared water part sensor that can on-line automatic measurement moisture content.
The infrared moisture sensor of the utility model adopts shunt that the light of two different wave lengths is delivered to two detectors simultaneously, thereby makes sensor have higher accuracy and the adaptability stronger to the paper optical properties.
The utility model is by the photogenerated current principle design, and light source is the light that semiconductor luminous array sends uniform two kinds of different wave lengths, makes spectrum concentrate on the measurement wave band.
Infrared moisture sensor of the present utility model comprises sending part and receiving unit, it is characterized in that: send and be provided with light adjusting circuit plate, semiconductor light emitting lattice array in the part, send window; Be provided with receiver window in the receiving unit, carry out magazine, circuit board for receiving that photoelectricity receives and changes; The sending part housing parts is provided with the transmission window, and the side near sending window in the sending part housing parts is provided with the light adjusting circuit plate; The semiconductor light emitting lattice array is fixed on the light adjusting circuit plate, and its light-emitting area is towards sending window; The input lead of light adjusting circuit plate is connected with the transmission socket that sends part; Have receiver window on the receiving unit housing, be provided with magazine in a side of receiving unit housing inner close fitting receiver window, the opposite side in the receiving unit housing fixedly installs circuit board for receiving, and the input lead of circuit board for receiving is connected with the receiver socket of receiving unit.
Be provided with a shunt of being close to the box wall and wave filter, photoelectric tube in the magazine in the receiving unit housing, shunt is connected successively with wave filter, photoelectric tube, and photoelectric tube is connected with the circuit board for receiving of receiving unit again.
The semiconductor light emitting lattice array that is provided with in the sending part housing of the present utility model promptly is the geometric array of the rule lined up of semiconductor light-emitting-diode, be positioned at its light-emitting area of sending part and be close to the setting of transmission window, make it to send the light of uniform two kinds of different wave lengths, make spectrum concentrate on the measurement wave band and alleviate the oven dry effect.
During infrared moisture content working sensor of the present utility model, the electric power that presets by the transmittance or the reflectivity stepping of tested paper offers emitting semiconductor by light adjusting circuit.Infrared ray that semiconductor sends impinges upon on the tested paper through sending window, and the light through paper transmission or reflection passes receiver window, extracts the infrared ray of moisture content absorbing wavelength and reference wavelength (not absorbed by moisture content) respectively by two light filters, is sent to two photoelectric tubes.Photoelectric tube is realized linear illumination/current conversion, and the two-way weak current of output is amplified to enough levels by circuit board for receiving, links calculating display unit outside the utility model by 4～20mA electric current loop interface of industrial standard.
Infrared water sensor of the present utility model is contained in the paper web that is used as papermaking operation back segment on the scanning support and scans continuous monitoring moisture content parameter in paper-making industry; The moisture content that cooperates outside calculating display unit or industrial computer can realize different measurement units converts and shows, can generate prime Working Procedure Controlling signal, realizes technological process continuous monitoring and closed loop quality control, promotes quality and efficient.
The photoelectricity regulation mechanism that infrared water sensor in the utility model adopts main regulation and fine adjustment to combine, main regulation is placed on the transmission part, and fine adjustment is placed on receiving unit, has replaced mechanical in the past regulation mechanism, makes work system more reliable and more stable; Different paper optical properties (as transmittance/reflectivity) is provided with different light source powers, makes of the influence of the working point of receiving circuit, strengthened the scope of application of instrument away from the inelastic region and the ripple of making an uproar.Be provided with semiconductor luminous array, make spectrum concentrate on the measurement wave band, alleviate the oven dry effect; During measurement, need not detecting voltage, dark current and drift about minimum, the linear degree height of output electric weight and illuminance relation, and be not subjected to the influence of environment light so accuracy of measurement height.
4, description of drawings
Fig. 1 is the structural representation of infrared moisture sensor embodiment 1 of the present utility model.
Fig. 2 is the principle of work block scheme of infrared moisture sensor embodiment 1 of the present utility model.
Among the figure: 1 light adjusting circuit plate, 2 semiconductor luminous arrays 3 send window 4 receiver windows 5 magazines 6 shunts 7 wave filter I8 wave filter II9 photoelectric tube I10 photoelectric tube II11 circuit board for receiving 12 paper 13 acceptance divisions 14 sending parts 18 and send socket 19 receiver sockets
5, embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Among embodiment 1 Fig. 1, infrared moisture sensor of the present utility model is formed by sending part 14 and receiving unit 13 two large divisions.Send the both sides that part 14 and receiving unit 13 are arranged at tested paper, be fixedly mounted on the scanning support.
Send part 14 and be arranged in the metal shell, in sending part 14, be provided with light adjusting circuit plate 1, semiconductor luminous array 2, send window 3, send socket 18.
Receiving unit 13 is arranged in another metal shell, is provided with to carry out magazine 5, shunt 6, wave filter I7, wave filter II8, photoelectric tube I9, photoelectric tube II10, circuit board for receiving 11, the receiver socket 19 that photoelectricity receives and changes in receiving unit 13.
Sending on part 14 housings near having transmission window 3 on the housing of tested paper 12 1 sides, in sending part 14 housings, be provided with light adjusting circuit plate 1, the housing that correspondence sends the opposite side of window 3 is provided with transmission socket 18, semiconductor light emitting lattice array 2 is fixed on the light adjusting circuit plate 1, and its light-emitting area is adjacent to and sends window 3 settings.
Have receiver window 4 at receiving unit 13 near on the housing of tested paper 12 1 sides, the housing of the opposite side of corresponding receiver window 4 is provided with receiver socket 19, in acceptance division 13 shells, a magazine 5 is set being close to receiver window 4, in magazine 5, be provided with shunt 6, wave filter I7 and wave filter II8, photoelectric tube I9 and photoelectric tube II10, shunt 6 is close to the setting of box wall, be adjacent to respectively in the both sides of shunt 6 and be provided with wave filter I7 and wave filter II8, wave filter I7 is connected with photoelectric tube II10 with photoelectric tube I9 respectively with wave filter II8; The leading-out terminal of photoelectric tube II10 is connected with the circuit board for receiving of receiving unit 11, carries out signal Processing.
Fig. 2 is the principle of work block scheme of the infrared moisture sensor embodiment 1 of the utility model.
Among Fig. 2, during the infrared moisture content working sensor of the utility model, after the electric power that presets by the transmittance stepping of tested paper pulp offers semiconductor light emitting lattice array 2 by light adjusting circuit plate 1, semiconductor light emitting lattice array 2 is sent the light of two kinds of specific different wave lengths, shine on the tested paper 12 through emitter window 3, see through on the receiver window 4 of acceptance division 13 that tested paper 12 arrives bottoms, the light of telling this two-way different wave length by the shunt 6 in the magazine 5 is at process wave filter I7, wave filter II8 extracts the infrared ray of moisture content absorbing wavelength and reference wavelength (not absorbed by moisture content) respectively, be sent to photoelectric tube I9, photoelectric tube II10 realizes linear illumination/current conversion, the two-way weak current of output is amplified to enough levels by circuit board for receiving 11, link the receiver socket 19 of acceptance division 13 by 4～20mA electric current loop interface of industrial standard and deliver to the computing machine display unit, calculate the paper water cut.
The same side that the sending part 14 of the infrared moisture sensor of embodiment 2 the utility model and acceptance division 13 are arranged at tested paper.
The structure that sends part 14 and receiving unit 13 is identical with embodiment 1, different is that transmission part 14 and receiving unit 13 are the both sides that independently are placed in tested paper 12 separately in embodiment 1, and in embodiment 2, send part 14 and receiving unit 13 will place in the same metal shell, transmission part 14 the insides are sent illumination and are mapped on the tested paper 12, be mapped to shunt 6 in the magazine 5 through the reflection of tested paper 12 receiver window 4 by receiving unit 13, the light of the two-way different wave length of telling by shunt 6 passes through wave filter I7 again, wave filter II8 extracts the infrared ray of moisture content absorbing wavelength and reference wavelength (not absorbed by moisture content) respectively, be sent to photoelectric tube I9, photoelectric tube II10 realizes linear illumination/current conversion, the two-way weak current of output is amplified to enough levels by circuit board for receiving 11, link the receiver socket 19 of acceptance division 13 by 4～20mA electric current loop interface of industrial standard and deliver to the computing machine display unit, calculate the paper water cut.
Claims (2)
1. an infrared moisture sensor comprises sending part and receiving unit, it is characterized in that: send and be provided with light adjusting circuit plate (1), semiconductor light emitting lattice array (2) in the part (14), send window (3); Be provided with receiver window (4) in the receiving unit (13), carry out magazine (5), circuit board for receiving (11) that photoelectricity receives and changes; Send transmission window (3) is set on part (14) housing, in sending part (14) housing, be provided with light adjusting circuit plate (1) near a side that sends window (3); Semiconductor light emitting lattice array (2) is fixed on the light adjusting circuit plate (1), and its light-emitting area is towards sending window (3); The input lead of light adjusting circuit plate (1) is connected with the transmission socket (18) that sends part (14); Have receiver window (4) on receiving unit (13) housing, side at receiving unit (13) housing inner close fitting receiver window (4) is provided with magazine (5), opposite side in receiving unit (13) housing fixedly installs circuit board for receiving (11), and the input lead of circuit board for receiving (11) is connected with the receiver socket (19) of receiving unit (13).
2. a kind of infrared moisture sensor according to claim 1, it is characterized in that: be provided with shunt (6) and a wave filter and a photoelectric tube of being close to the box wall in the described magazine (5), shunt (6) is connected successively with wave filter, photoelectric tube, and photoelectric tube is connected with the circuit board for receiving (11) of receiving unit again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252915 CN2648438Y (en) | 2003-09-23 | 2003-09-23 | Infrared moisture sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252915 CN2648438Y (en) | 2003-09-23 | 2003-09-23 | Infrared moisture sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2648438Y true CN2648438Y (en) | 2004-10-13 |
Family
ID=34328117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03252915 Expired - Fee Related CN2648438Y (en) | 2003-09-23 | 2003-09-23 | Infrared moisture sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2648438Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460859C (en) * | 2006-04-29 | 2009-02-11 | 华东师范大学 | Sensing fiber infrared water determiner |
| CN104246477A (en) * | 2012-03-28 | 2014-12-24 | 横河电机株式会社 | Substance properties measuring device |
| CN106841563A (en) * | 2017-03-03 | 2017-06-13 | 上海事凡物联网科技有限公司 | The measurement apparatus and measuring method of a kind of Fuel loads |
-
2003
- 2003-09-23 CN CN 03252915 patent/CN2648438Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460859C (en) * | 2006-04-29 | 2009-02-11 | 华东师范大学 | Sensing fiber infrared water determiner |
| CN104246477A (en) * | 2012-03-28 | 2014-12-24 | 横河电机株式会社 | Substance properties measuring device |
| CN104246477B (en) * | 2012-03-28 | 2017-04-12 | 横河电机株式会社 | Substance properties measuring device |
| CN106841563A (en) * | 2017-03-03 | 2017-06-13 | 上海事凡物联网科技有限公司 | The measurement apparatus and measuring method of a kind of Fuel loads |
| CN106841563B (en) * | 2017-03-03 | 2020-02-14 | 上海事凡物联网科技有限公司 | Device and method for measuring water content of combustible |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |