CN85107158B - Auto-print luxmeter with optic-fiber record - Google Patents

Auto-print luxmeter with optic-fiber record Download PDF

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Publication number
CN85107158B
CN85107158B CN 85107158 CN85107158A CN85107158B CN 85107158 B CN85107158 B CN 85107158B CN 85107158 CN85107158 CN 85107158 CN 85107158 A CN85107158 A CN 85107158A CN 85107158 B CN85107158 B CN 85107158B
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Prior art keywords
recording
curve
illumination
present
intensity
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CN 85107158
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Chinese (zh)
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CN85107158A (en
Inventor
陈秋元
王天任
胡本贵
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Jilin Agricultural University
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Jilin Agricultural University
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Priority to CN 85107158 priority Critical patent/CN85107158B/en
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Publication of CN85107158B publication Critical patent/CN85107158B/en
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  • Recording Measured Values (AREA)

Abstract

The present invention relates to an automatic printing optical fiber luxmeter, particularly to an optics testing instrument for measuring the intensity of artificial light and natural light. The present invention achieves the purposes of continuously measuring the illumination intensity and automatically recording. The present invention is composed of an optical detector, an automatic shift gear amplifying circuit, a curve recording device, a digital printing device and an instantaneous digital display device, wherein the curve recording device uses an optical conducting fiber frictionless recording mode. The optical detector is composed of an optical filter sheet and a blue silicon photocell. Thus, a visible spectral response curve is consistent with a human eye visual spectral curve prescribed by the international commission for illumination (CIE).

Description

Auto-print luxmeter with optic-fiber record
A kind of optical testing instrument
Intensity of illumination is an important meteorologic factor in the Nature meteorology, and product mainly contains JD series illuminometer both at home and abroad at present, and CZR type, CZ-3 type, ZF-2 type illumination are taken into account Japanese SP 1a illuminometer, pass through international online retrieval through the five or five institute information service department of Ministry of ordnance Industry, result to auto-print luxmeter with optic-fiber record retrieval is zero, existing illuminometer can only be observed instantaneous intensity of illumination numerical value, but the data automatic recording of observation can not be got off, under natural conditions, illumination condition changes rapidly, luffing is very big, instantaneous ten thousand become, instant is measured the overall picture that at all cannot understand illumination variation, and biological growth and intensity of illumination in the Nature are closely bound up, and people's life and activity in production also be unable to do without illumination.This just need a kind of can Continuous Observation intensity of illumination and can automatically record and the instrument of macroscopic description illumination variation curve.
For above-mentioned problem, the present invention has developed energy Continuous Observation intensity of illumination, recording light is shone the illuminometer of strength values, light value energy macroscopic description illumination variation curve automatically.
Fig. 1, be design block scheme of the present invention, photo-detector receives institute's photometry, proofreaies and correct through suitable optical filtering, the human eye vision curve of spectrum that makes it to meet International Commission on Illumination (CIE) regulation, then changes photocurrent into and exports through fluid drive amplifying circuit Fen San road:
The first via: analog electrical energy is depicted the continuous curve of intensity of illumination time to time change through tracer.
The second tunnel: analog electrical energy is converted to digit pulse through analog-digital commutator, shows instantaneous brightness value by numeric display unit.
Third Road: analog electrical energy is converted to digit pulse through analog-digital commutator, through the automatic digital print system of special interface circuit input counter, automatic time typing intensity of illumination numerical value, light value after calculation by program.
Below in conjunction with accompanying drawing, one embodiment of the present of invention are described in detail:
Fig. 2 is photo-detector structural drawing.
Fig. 3 is tracer schematic diagram.
Fig. 4 is fluid drive amplifying circuit block scheme.
Fig. 5 is interface circuit block scheme.
Photo-detector:
The photo-electric conversion element of illuminometer photo-detector used has two kinds conventionally: one is selenium cell, although this selenium cell spectral response curve relatively meets the human eye vision curve of spectrum, but not endurance, unstable properties, is unfit to do Continuous Observation use, is only suitable in transient measurement.Another kind is silicon photocell, although fatigue performance is stable, can be used as Continuous Observation, and spectral response curve performance and the human eye vision curve of spectrum are far apart, and error is very large, proofreaies and correct difficulty.
The present situation of the light prober using for current illuminometer, the present invention has developed the photo-detector of planting the long-term follow-on test of energy and the visible spectrum responses curve approximation human eye vision curve of spectrum.
By Fig. 2, cosine corrector (1) is used for eliminating the measuring error that different angles incident light causes.Optical filter (2), (3) are key problem in technology of the present invention, determine that through a large amount of combined sorting tests optical filter is QB-21 and two kinds of materials of JB-16, QB-21 gauge scope 1.8~2.3JB-16 gauge scope 1.4-1.8, optimum thickness size QB-21 is 2.1, JB-16 is 1.5, and effect is best.Photoelectric cell (4) selects the blue silicon photocell of 2CR101 that the light of reception is converted to electric current, the fixed bolster (6) making of packing polyfoam or rubber, be placed in heelpiece (7), form the positioning element of cosine corrector (1), optical filter (2), (3), photoelectric cell (4) together with upper cover (5), upper cover (5) is connected with screw thread or screw with base (7), and plug (8) is integrated with insulator foot (7).
Photo-detector stable performance of the present invention, highly sensitive, energy continuous working, endurance, visible spectrum meets the human eye vision curve of spectrum, uses the illuminometer of photo-detector of the present invention, its colour correction factor K after tested, reaches the one-level illuminometer standard that state general bureau of metrology stipulates.
Fluid drive amplifying circuit
Because natural lighting intensity in one day can change to tens0000 Luxs from several Luxs, if only whole day intensity of illumination is measured with a range, certainly will low light according to time cause larger error.Therefore illuminometer need to adopt multiple range hand shifts, to improve measuring accuracy, automatically record intensity of illumination if realize, just exist one to carry out multirange fluid drive problem to surveyed intensity of illumination, the problem that fluid drive amplifying circuit solves is just this.
This circuit divides three parts, and Part I is made up of photoelectric cell, chopping zero-stabilizing operational amplifier, the photosignal amplification that photoelectric cell is produced because of illumination.Part II is fluid drive circuit, see Fig. 4, serve as (range voltage ratio) restriction by operational amplifier, by two input end rejection gates, comparison deboost is sent to (bidirectional shift register), and the level signal of exporting thus automatic range extension (upgrading) or dwindling range (lowering category) removes to trigger two-way switch, make photosignal realize its (gear control) by its corresponding range input digital voltage and tracer, in addition, this photosignal is also inputted respectively digital voltmeter by XOR gate, tracer, drive the displacement of digital voltmeter radix point, realizing range conversion shows.
The constant-current source circuit that Part III power unit is made up of operational amplifier, field effect transistor, level display device (as light emitting diode) and accessory circuit (bleeder circuit), for whole circuit provides supply voltage, the reference voltage of accurate stable is provided and plays battery level demonstration effect to voltage comparator circuit.
Due to the high impedance input of integrated circuit, avoid the retroactive effect of curent change to input circuit in register, offseted voluntarily again the error that the resistance of on-off circuit self village causes owing to having adopted one group of two-way switch more, thereby greatly improve the reliability of circuit, greatly improved measuring accuracy.
Numeral shows and automatic time typing system
This system can realize automatic time typing intensity of illumination, and lighting accumulating value (being light value) is printed in programming, by analog-digital commutator, analog electrical energy is converted to digit pulse, demonstrate intensity of illumination instantaneous value by digital voltmeter, digit pulse is simultaneously connected with printing calculator by interface circuit again.In the present embodiment, use
Figure B85107158D0000031
digitizing tablet voltage table.
Interface circuit principle is such (seeing Fig. 5): from the digit pulse of digital voltmeter, enter (data selector) by (latch), under the instruction of timing distributor, enter one by one by (code translator), carry out entering again after decoding (data selector), under time sequential pulse effect, instruction is passed to by (two-way switch), the output signal of (two-way switch) is directly controlled the duty of (printing calculator), thereby realize the manual operation of simulation, realize automatic printing.The present embodiment adopts CAS10-HR-7 type figure punch counter, can print instantaneous value, accumulated value, i.e. intensity of illumination and light value simultaneously.In the cycle of timed print, can complete clock cycle by adjusting.
Tracer
The invention belongs to curve self-recording unit, when current tracer records, need recording pointer to contact with recording chart, the signal of record could be recorded on paper, this recording method mountain factory pen contacts with paper and produces friction force, not only the driving force of pen needs to increase, and registration accuracy also can decline, and nib is also had to wearing and tearing.
The present invention is a kind of pen and the discontiguous tracer of paper, thus while recording, pen and paper zerofriction force, the driving of pen, J reduces, and guarantees f registration accuracy, and pen is without wearing and tearing.
Shell by the pointer of pen recorder as recording pointer, pen core is that light transmitting fiber is made, the tail end (fibre-optic ' end) of pen is aimed at a constant light source, writing end is aimed at recording chart and is kept certain distance, recording chart is made with photosensitive material, therefore constant light source reflects luminous point by light transmitting fiber at writing end, and the pen recorder that receives signal drives a pointer relative record paper to do contactless motion, makes sensitized paper sensitization and makes the record of the signal ditch of stagnant water foretell.
The present invention only increases by a fixed light source on existing record device, and record pointer pen is made to hollow-core construction, in wear a light and sigh fiber, so simple in structure, existing apparatus is very easily reequiped.
The following embodiment of concrete structure and the accompanying drawing of invention provide.
Fig. 3 is schematic diagram of the present invention.
On former pen recorder revolution drum (9), photosensitive record paper (10) is housed, hollow pointer (i.e. the shell of pen) (11) the in-built light transmitting fiber (12) after repacking, one end are stretched out and alignment light source (16) by the aperture (15) near rotating shaft place.In the time that pen recorder drives pointer (11) motion, the light transmitting fiber other end is writing end and revolution drum (9) relative frictionless motion, reflect luminous point through light transmitting fiber (12) at writing end by constant light source (16), make (10) sensitization of photosensitive record paper and tracer signal.
The corresponding power circuit of another increase in the time that constant light source adopts the invisible light source such as infrared ray or ultraviolet ray.
If when photosensitive record paper adopts common sensitive photographic material, need rouse (9) outer cover one magazine (13) in revolution, and in pointer (11) direction of motion, leave a long narrow seam (14).

Claims (3)

1. the illuminometer being made up of photo-detector, amplifying circuit, output display device, is characterized in that:
A. output display device is by a recording pointer pen and recording chart, revolution drum composition, wherein: pointer pen (11) is hollow-core construction, there is a light transmitting fiber (12) centre, its one end is by stretching out near rotating shaft aperture (15), and aim at constant light source (16), the other end and recording chart (10) do without friction relative motion, recording chart (10) is made up of photosensitive material, the revolution drum (9) that wraps in uniform motion is upper, and upper outer cover one magazine (13) of revolution drum (9) is also provided with a long narrow seam (14) in pointer pen (11) direction of motion.
B. the optical filter of photo-detector is superposeed and is formed by QB21 and JB16, and QB21 thickness is 1.8-2.3mm.
JB16 thickness is 1.4-1.8mm.
Blue silicon photocell is 2CR101.
2. illuminometer according to claim 1, is characterized in that optical filter QB21 optimum thickness is 2.1mm, and optical filter JB16 optimum thickness is 1.5mm.
3. illuminometer according to claim 1 and 2, the invisible photosensitive material such as the constant light source (16) that it is characterized in that output display device is for invisible light source is as light sources such as infrared ray, ultraviolet rays, and recording chart (10) is infrared ray, ultraviolet.
CN 85107158 1985-09-22 1985-09-22 Auto-print luxmeter with optic-fiber record Expired CN85107158B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 85107158 CN85107158B (en) 1985-09-22 1985-09-22 Auto-print luxmeter with optic-fiber record

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 85107158 CN85107158B (en) 1985-09-22 1985-09-22 Auto-print luxmeter with optic-fiber record

Publications (2)

Publication Number Publication Date
CN85107158A CN85107158A (en) 1986-07-02
CN85107158B true CN85107158B (en) 1987-09-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 85107158 Expired CN85107158B (en) 1985-09-22 1985-09-22 Auto-print luxmeter with optic-fiber record

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CN85107158A (en) 1986-07-02

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