CN1079302A - Optic fibre pH meter - Google Patents
Optic fibre pH meter Download PDFInfo
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- CN1079302A CN1079302A CN 92103625 CN92103625A CN1079302A CN 1079302 A CN1079302 A CN 1079302A CN 92103625 CN92103625 CN 92103625 CN 92103625 A CN92103625 A CN 92103625A CN 1079302 A CN1079302 A CN 1079302A
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Abstract
Optic fibre pH meter, mainly formed by optical fiber pH sensor (1) and detection control system, optical fiber pH sensor (1) is that dyestuff directly is fixed on integral structure in micropore glass ceramics or the potsherd, detect control system simultaneously and adopt the colorimetry principle, the pH value of measured body is only relevant with colourity, and is irrelevant with intensity.Have simple in structure, long service life, pH value resolution height, applied range, can be widely used in biochemical industry, chemical industry, medicine and other fields and do that the pH value detects in real time and the occasion of control, be particularly useful for the occasion that requirement autoclave sterilization and measured body are muddy liquid, have bigger implementary value.
Description
The invention belongs to pH meter, especially optic fibre pH meter is applicable to the occasion that biochemical industry, chemical industry, medicine and other fields are done the detection in real time of pH value and controlled in real time.
Before the present invention makes, prior art pH detection method mainly contains two kinds, a kind of is glass electrode pH meter, it is to constitute a primary element by glass electrode and mercurous chloride electrode, when the pH of measured body value changed, the electromotive force of this primary element is respective change also, and the testing circuit of pH meter is used to detect the electromotive force of this primary element, the electromotive force of being surveyed is corresponding pH value, this pH meter structure is simpler, easy to use, and pH pH-value determination pH scope is wider, but it is broken easily when using, precision is relatively poor, particularly when biological chemical field uses because of the sterilization very easy bursting, the life-span is shorter, this kind pH meter costs an arm and a leg owing to adopted the special glass electrode; Second kind is the test paper colourimetry, belongs to disposable use, uses easily, price is also cheap, but because the pH value of measured body is only relatively determined reading with visual inspection, error is bigger, the error of general pH value is at 0.1-0.5, and simultaneously, difficulty is given and realized that computer real-time detects and the occasion of control.
Task of the present invention is the shortcoming that overcomes prior art, provide a kind of simple in structure, pH value resolution height, application wide, can realize that pH value detects in real time and controls in real time, optic fibre pH meter esy to use, safe and reliable simultaneously.
Optic fibre pH meter, include optical fiber pH sensor (1), optical turbidity sensor (2), white light source (3), two groups of tricolor photoelectric sensors (4), the secondary y-type optical fiber passes light beam (5), there is not drift small signal amplifier (6), multi-channel a/d converter (7), special microprocessor system (8), three groups of high stable power supplys (9), white light source (3) is connected with the input end that two groups of y-type optical fibers pass light beam (5), the common port that this y-type optical fiber passes light beam (5) respectively with optical fiber pH sensor (1), optical turbidity sensor (2) connects, the output terminal that this y-type optical fiber passes light beam (5) is connected with the input end of two groups of tricolor photoelectric sensors (4) respectively, the output terminal of this tricolor photoelectric sensor (4) is connected with the input end that does not have drift small signal amplifier (6), this output terminal that does not have drift small signal amplifier (6) is connected with multi-channel a/d converter (7) input end, the output terminal of this multi-channel a/d converter (7) is connected with the input end of special microprocessor system (8), the D/A output terminal linkage record instrument of this special microprocessor system (8), three groups of high stable power supplys (9) respectively with white light source (3), there is not drift small signal amplifier (6), multi-channel a/d converter (7), special microprocessor system (8) connects, and the responsive sheet (10) in the optical fiber pH sensor (1) is that dyestuff directly is fixed on integral structure in micropore glass ceramics or the potsherd.The output light of two groups of tricolor photoelectric sensors (4) is red, green, blue look.
Below in conjunction with accompanying drawing the present invention is described in detail:
Fig. 1 is the theory diagram of optic fibre pH meter.
Fig. 2 is a kind of structural representation of optical fiber pH sensor.
Fig. 3 is a kind of structural representation of optical turbidity sensor.
Fig. 4 is a kind of structural representation of one group of tricolor photoelectric sensor.
Fig. 5 is not for there being a kind of structural representation of drift small signal amplifier.
As shown in Figure 1, optic fibre pH meter of the present invention has 9 essential parts, is respectively described below:
A kind of structure of optical fiber pH sensor (1) as shown in Figure 2, the common port of one group of y-type optical fiber biography light beam (5) is connected with the responsive sheet (10) of optical fiber pH sensor (1), the common port position that this group y-type optical fiber that is connected with the responsive sheet (10) of optical fiber pH sensor (1) passes light beam (5) is with stainless steel outer sleeve (11), the common port that this group y-type optical fiber passes light beam (5) seals with close turn-taking (12) with the connecting portion of stainless steel outer sleeve (11), and the responsive sheet (10) in the optical fiber pH sensor (1) is that dyestuff directly is fixed on integral structure in micropore glass ceramics or the potsherd.
Optical turbidity sensor (2) as shown in Figure 3, the common port that another group y-type optical fiber passes light beam (5) is connected with the turbidity colorimetric chamber (13) of optical turbidity sensor (2), the common port position that this group y-type optical fiber that is connected with the turbidity colorimetric chamber (13) of optical turbidity sensor (2) passes light beam (5) is with stainless steel outer sleeve (14), and this group y-type optical fiber passes the common port of light beam (5) and the connecting portion of stainless steel outer sleeve (14) seals with sealing turn-take (15).
Fig. 4 is a kind of structural representation of one group of tricolor photoelectric sensor (4), the output terminal that y-type optical fiber passes light beam (5) is connected with the input end of this group tricolor photoelectric sensor (4), redness, green, blue coloured light electric transducer (17), (18), (19) are set respectively in this group tricolor photoelectric sensor (4), and the electric signal output common port of this redness, green, blue coloured light electric transducer (17), (18), (19) is (16).
There is not drift small signal amplifier (6) as shown in Figure 5, the output terminal of tricolor photoelectric sensor (4) is connected with the input end of the nothing drift I/V converter that does not have drift small signal amplifier (6), this output terminal that does not have drift I/V converter is connected with the input end that does not have drift amplifier A, this output terminal that does not have drift amplifier A is connected with the input end of emitter follower E, the output terminal of this emitter follower E is connected with the input end of multi-channel a/d converter (7), the output terminal of this multi-channel a/d converter (7) is connected with the input end of special microprocessor system (8), the D/A output terminal linkage record instrument of this special microprocessor system (8).
Optic fibre pH meter of the present invention, its principle of work is: the input optical fibre that the white light of white light source (3) passes light beam (5) through y-type optical fiber is transferred to the responsive sheet (10) of optical fiber pH sensor (1), reflected light through this sensitivity sheet (10) is transferred to three basic formula photoelectric sensors (4) by the output optical fibre that y-type optical fiber passes light beam (5), do not amplify through there being drift small signal amplifier (6) again, deliver to multi-channel a/d converter (7) and be transformed into digital quantity, for special microprocessor system (8) data acquisition, data processing, LED shows, the registering instrument record is exported and is supplied in simulation, whole optic fibre pH meter is powered by three groups of high stable power supplys (9), because the present invention adopts the colorimetry principle, the pH value of measured body is only relevant with colourity, irrelevant with intensity, compared with prior art, the system architecture advantages of simple, pH value resolution height, error is little, usually the resolution of pH value can reach 0.01, the day drift value of pH value is ± 0.1, application is wide, can be widely used in biochemical industry, chemical industry, medicine and other fields is made the occasion that the pH value detects and controls in real time in real time, be particularly useful for the occasion that requirement autoclave sterilization and measured body are muddy liquid, long service life, easy to operate, safe and reliable, economic results in society are remarkable, have bigger implementary value.
Claims (2)
1, optic fibre pH meter, include optical fiber pH sensor (1), optical turbidity sensor (2), white light source (3), two groups of tricolor photoelectric sensors (4), two groups of y-type optical fibers pass light beam (5), there is not drift small signal amplifier (6), multi-channel a/d converter (7), special microprocessor system (8), three groups of high stable power supplys (9), it is characterized in that white light source (3) is connected with the input end that two groups of y-type optical fibers pass light beam (5), the common port that this y-type optical fiber passes light beam (5) respectively with optical fiber pH sensor (1), optical turbidity sensor (2) connects, the output terminal that this y-type optical fiber passes light beam (5) is connected with the input end of two groups of tricolor photoelectric sensors (4) respectively, the output terminal of this tricolor photoelectric sensor (4) is connected with the input end that does not have drift small signal amplifier (6), this output terminal that does not have drift small signal amplifier (6) is connected with multi-channel a/d converter (7) input end, the output terminal of this multi-channel a/d converter (7) is connected with the input end of special microprocessor system (8), the D/A output terminal linkage record instrument of this special microprocessor system (8), three groups of high stable power supplys (9) respectively with white light source (3), there is not drift small signal amplifier (6), multi-channel a/d converter (7), special microprocessor system (8) connects, and the responsive sheet (10) in the optical fiber pH sensor (1) is that dyestuff directly is fixed on integral structure in micropore glass ceramics or the potsherd.
2, optic fibre pH meter as claimed in claim 1 is characterized in that the output light of two groups of tricolor photoelectric sensors (4) is respectively red, green, blue look.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92103625 CN1079302A (en) | 1992-05-28 | 1992-05-28 | Optic fibre pH meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92103625 CN1079302A (en) | 1992-05-28 | 1992-05-28 | Optic fibre pH meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1079302A true CN1079302A (en) | 1993-12-08 |
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ID=4940330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92103625 Pending CN1079302A (en) | 1992-05-28 | 1992-05-28 | Optic fibre pH meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1079302A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342818A (en) * | 2010-07-30 | 2012-02-08 | Bsh博世和西门子家用电器有限公司 | Water-carrying home appliance and dish-washing machine |
| CN104568946A (en) * | 2015-01-23 | 2015-04-29 | 中国农业大学 | Intelligent optical fiber pH sensor |
| US20220054052A1 (en) * | 2018-12-21 | 2022-02-24 | Ngpod Global Limited | Apparatus for coupling radiation into and out of an optical fiber |
-
1992
- 1992-05-28 CN CN 92103625 patent/CN1079302A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342818A (en) * | 2010-07-30 | 2012-02-08 | Bsh博世和西门子家用电器有限公司 | Water-carrying home appliance and dish-washing machine |
| CN102342818B (en) * | 2010-07-30 | 2016-01-20 | Bsh家用电器有限公司 | Home appliances with water running, particularly dish-washing machine |
| CN104568946A (en) * | 2015-01-23 | 2015-04-29 | 中国农业大学 | Intelligent optical fiber pH sensor |
| US20220054052A1 (en) * | 2018-12-21 | 2022-02-24 | Ngpod Global Limited | Apparatus for coupling radiation into and out of an optical fiber |
| US12186078B2 (en) * | 2018-12-21 | 2025-01-07 | Ngpod Global Limited | Apparatus for coupling radiation into and out of an optical fiber |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |