CN112857567A - Illuminance meter for measuring general illuminance and EML illuminance - Google Patents
Illuminance meter for measuring general illuminance and EML illuminance Download PDFInfo
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- 238000012937 correction Methods 0.000 claims abstract description 30
- 230000005855 radiation Effects 0.000 claims abstract description 30
- 230000003993 interaction Effects 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000005286 illumination Methods 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 8
- YJPIGAIKUZMOQA-UHFFFAOYSA-N Melatonin Natural products COC1=CC=C2N(C(C)=O)C=C(CCN)C2=C1 YJPIGAIKUZMOQA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229960003987 melatonin Drugs 0.000 claims abstract description 6
- DRLFMBDRBRZALE-UHFFFAOYSA-N melatonin Chemical compound COC1=CC=C2NC=C(CCNC(C)=O)C2=C1 DRLFMBDRBRZALE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000003595 spectral effect Effects 0.000 description 10
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 4
- 230000004310 photopic vision Effects 0.000 description 4
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- 230000027288 circadian rhythm Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 108010007013 Melanocyte-Stimulating Hormones Proteins 0.000 description 1
- 208000019022 Mood disease Diseases 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention relates to an illuminance meter for measuring general illuminance and EML illuminance, which comprises a photoelectric receiving module, two photoelectric conversion modules, an electric signal processing module and a human-computer interaction module which are sequentially arranged along an optical radiation input direction, wherein the photoelectric receiving module comprises a cosine correction probe, a beam splitter and two correction function filter sets, the two correction function filter sets are a human eye filter set and an equivalent melatonin illuminance filter set respectively, each photoelectric conversion module comprises a condensing lens and a silicon photocell, the silicon photocell is connected with the electric signal processing module through a data line, and the electric signal processing module is connected with the human-computer interaction module. Compared with the prior art, the method has the advantages of realizing simultaneous measurement of general illumination and EML illumination and the like.
Description
Technical Field
The invention relates to the technical field of optical radiation measurement, in particular to an illuminance meter for measuring general illuminance and EML illuminance.
Background
EML (melanoidin equivalent lux) is an index for quantifying the effect of the light rhythm. It is proposed by Robert j. Lucas et al indicate that light is a powerful stimulus to regulate circadian rhythms, hormones and the behavioral system. In addition, light therapy is effective for certain affective disorders, sleep problems and circadian rhythm disturbances. In addition to the traditional rods and cones, these biological and behavioral effects of light are also influenced by a unique photoreceptor cell in the eye, namely the intrinsically photosensitive retinal ganglion cells (ipRGCs) that contain melanin. They provided a calculator based on the excel program, which can calculate the equivalent lux values of 5 photoreceptors (three cones, one rod and one ipRGC) in the retina. The equivalent illumination corresponding to the non-visual photoreceptor cell ipRGC is defined as the apparent melanin equivalent lux EML, and is used as the quantization index of the rhythm illumination design. The existing commercially available illuminance meter only has a general illuminance measurement function, does not integrate the EML illuminance correspondingly, and needs to be improved in use convenience and practicability in the scene of adjusting the light output of the lamp on the illumination site.
Disclosure of Invention
The present invention aims to overcome the defects of the prior art and provide an illuminance meter for measuring general illuminance and EML illuminance, which realizes the simultaneous measurement of the general illuminance and the EML illuminance.
The purpose of the invention can be realized by the following technical scheme:
an illuminance meter for measuring general illuminance and EML illuminance comprises a photoelectric receiving module, two photoelectric conversion modules, an electric signal processing module and a human-computer interaction module which are sequentially arranged along an optical radiation input direction, wherein the photoelectric receiving module comprises a cosine correction probe, a beam splitter and two correction function filter sets, the two correction function filter sets are a human eye filter set and an equivalent melatonin illuminance filter set respectively, each photoelectric conversion module comprises a condensing lens and a silicon photocell, the silicon photocell is connected with the electric signal processing module through a data line, and the electric signal processing module is connected with the human-computer interaction module;
the light radiation emitted by the luminous body irradiates the photoelectric receiving module, the light radiation is corrected by the cosine correction probe and then divided into two paths by the optical splitter, the two paths of light radiation enter the two correction function filter sets respectively to form two paths of effective test light radiation, then the two paths of effective test light radiation irradiate to the silicon photocell through respective condensing lenses of the two photoelectric conversion modules respectively, the silicon photocell converts the effective light radiation into electric parameters with corresponding intensity, the electric parameters are input to the electric signal conversion module to be processed, and the human-computer interaction module displays and operates results.
Further, the photoelectric receiving module, the photoelectric conversion module and the electric signal processing module are fixed in a portable shell.
Furthermore, the electric signal processing module and the man-machine interaction module are connected in a wireless communication mode.
Furthermore, the wireless communication mode comprises 4G, 5G, Bluetooth and WIFI communication connection.
Furthermore, the human-computer interaction module is intelligent terminal equipment.
Furthermore, the human-computer interaction module comprises a touch display screen.
Further, the operation of the human-computer interaction module comprises setting measurement starting time and measurement ending time; start, stop, clear, and store operations are performed.
Further, the cosine correction probe adopts 180-degree field angle optical-grade white diffuse reflection material.
Compared with the prior art, the invention has the following advantages:
1. the illuminometer can realize the simultaneous measurement of general illumination and EML illumination by arranging the light splitter, the correction function filter set, the photoelectric conversion module and the like, and has better practicability and convenience for evaluating the rhythm and the non-biological effect of illumination in real time compared with the traditional illuminometer with single function.
2. The photoelectric receiving module, the photoelectric conversion module and the electric signal processing module are fixed in the portable shell, and the man-machine interaction module is connected in a wired and wireless connection mode, so that the photoelectric conversion device is convenient to use and operate.
3. The illuminometer can be expanded into a feedback part of a field lighting system through the arrangement of the human-computer interaction module, and can feed back and adjust the light output of the lamp on the lighting field according to the actual sampling test value.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a diagram of the corresponding spectral response function of a correction function filter set.
Reference numerals: 10 is a luminous body, 20 is optical radiation, 100 is a photoelectric receiving module, 101 is a cosine correction probe, 102 is a light splitter, 103 is a correction function filter set, 30 is effective test optical radiation, 200 is a photoelectric conversion module, 201 is a condensing lens, 202 is a silicon photocell, 40 is a data line, 300 is an electric signal conversion module, and 400 is a human-computer interaction module.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the present embodiment discloses an illuminance meter for measuring general illuminance and EML illuminance, which includes a photoelectric receiving module 100, two photoelectric conversion modules 200, two electrical signal processing modules 300, and a human-computer interaction module 400, which are sequentially arranged along an input direction of optical radiation 20.
The photoelectric receiving module 100 includes a cosine correction probe 101, a beam splitter 102, and two correction function filter sets 103. The two correction function filter sets 103 are a human eye filter set and an equivalent melatonin illumination filter set, and their spectral response functions are shown in fig. 2, which are a photopic vision spectral luminous efficiency function (human eyes) and a melanotropin spectral luminous efficiency function (equivalent melatonin illumination). The illuminant 10 emits light to form an illumination light environment, the light radiation 20 irradiates the cosine correction probe 101, after the cosine correction probe 101 is corrected, the light radiation 20 is divided into two paths by the light splitter 102, and respectively enters the two correction function filter sets 103 to form two paths of effective test light radiation 30, and the effective test light radiation 30 enters the subsequent two photoelectric conversion modules 200. The cosine correction probe 101 is made of a white diffuse reflection material with high reflectivity and an optical field angle of 180 degrees, so that the probe can receive not only direct optical radiation, but also optical radiation irradiating the probe from all directions within 180 degrees. The correction function filter set 103 is made of band-pass filter glass and combined according to a specific spectral response curve, so that invalid spectral components in the optical radiation 20 are filtered out, and effective spectral components are reserved; the optical radiation 20 passes through the correction function filter to form the effective test optical radiation.
Each photoelectric conversion module 200 includes a condenser lens 201 and a silicon photo cell 202. The silicon photocell 202 is connected with the electric signal processing module 300 through the data line 40; the electric signal processing module 300 is connected with the human-computer interaction module 400. The silicon photocell 202 may also be a selenium photocell. After receiving the optical radiation 20, the silicon photocell 202 generates a current (an electrical parameter corresponding to the intensity) and transmits the current to the electrical signal conversion module 300 for processing, and the human-computer interaction module 400 displays and operates the result.
The human-computer interaction module 400 includes a touch display screen, and may adopt a conventional intelligent terminal device such as a mobile phone, a computer, a tablet computer, and the like. The photoelectric receiving module 100, the photoelectric conversion module 200 and the electrical signal processing module 300 are fixed in a portable housing and connected with the human-computer interaction module 400 through wired or wireless communication. The wireless communication mode adopts conventional 4G, 5G, bluetooth and WIFI communication connection. The information of the measured light radiation amount can be displayed in the human-computer interaction module 400. Meanwhile, the human-computer interaction module 400 can also send a data reading instruction, a test starting instruction, a test stopping instruction, a test data zero clearing and storing instruction, a correction function filter set 103 response function selecting and adjusting instruction and other related operation instructions to the electric signal conversion module 300 through a data transmission control instruction transmission line.
The electric signal processing module 300 adopts a commercially available processing chip, and in the operation process of the module, the numerical calculation method of the EML is as follows:
EML value ═ 72983.25 ^ E ^e,λ(λ)Nz(λ)dλ
Wherein E ise,λ(lambda) is whenPosition-taking watt per square meter per nanometer (W/m)2/nm), the measured value of the spectral power density distribution of unit area; n is a radical ofz(λ) is the photopic potency function of the melanoidin spectrum; λ is the value of the wavelength when the unit is in nanometers (nm) (380-780).
The derivation process is as follows: the numerical calculation method of EML by Robert j. lucas et al gives a description:
wherein, KmIs a constant, representing a photopic maximum spectral luminous efficacy, value 683.002; v (lambda) is the photopic function of photopic vision spectrum.
Although the peak value of the photopic function of the non-visual photoreceptor cell ipRGC is about 480nm, the peak value of the photopic function of the melanophore spectrum is 490nm in consideration of the spectral transmission function of the lens of the adult eye. Since the value of ^ V (λ) d (λ) is 106.857, and ^ NzThe value of (λ) d (λ) is defined as equal to 1, thus further simplifying the formula:
EML value ═ 72983.25 ^ E ^e,λ(λ)Nz(λ)dλ。
In the embodiment, the ordinary illumination and the EML illumination can be directly measured at the same time through the optical splitter 102, and the method has great practicability and convenience for real-time evaluation of the illumination rhythm and the non-biological effect; the filter set of the embodiment simultaneously comprises a traditional human eye filter set and an equivalent melatonin illumination EML filter set, and a traditional luminosity test instrument almost completely adopts a photopic vision spectrum photopic vision efficiency function defined by the International society for illumination (CIE) as a correction function filter, and mainly considers the visual effect of illumination; in addition, the human-computer interaction module 400 in this embodiment is convenient, the display control terminal may form a part of the test instrument independently, and may also be expanded to be a feedback part of the field lighting system, and the light output of the lamp in the lighting field may be feedback-adjusted according to the actual sampling test value.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. An illuminance meter for measuring general illuminance and EML illuminance is characterized by comprising a photoelectric receiving module (100), two photoelectric conversion modules (200), two electric signal processing modules (300) and a man-machine interaction module (400) which are sequentially arranged along the input direction of optical radiation (20), wherein, the photoelectric receiving module (100) comprises a cosine correction probe (101), a beam splitter (102) and two correction function filter sets (103), the two correction function filter sets (103) are respectively a human eye filter set and an equivalent melatonin illumination filter set, each photoelectric conversion module (200) comprises a condensing lens (201) and a silicon photocell (202), the silicon photocell (202) is connected with the electric signal processing module (300) through a data line (40), the electric signal processing module (300) is connected with the human-computer interaction module (400);
the luminous body (10) emits light radiation (20) to irradiate the photoelectric receiving module (100), the light radiation (20) is corrected by the cosine correction probe (101) and then is divided into two paths through the optical splitter (102), the two paths of light radiation enter the two correction function filter sets (103) respectively to form two paths of effective test light radiation (30), then the two paths of effective test light radiation (30) irradiate the silicon photocell (202) through the respective condensing lens (201) of the two photoelectric conversion modules (200), the silicon photocell (202) converts the effective light radiation (20) into electric parameters with corresponding intensity, the electric parameters are input to the electric signal conversion module (300) to be processed, and the human-computer interaction module (400) displays and operates results.
2. An illuminance meter for measuring general illuminance and EML illuminance according to claim 1, wherein said photoelectric receiving module (100), said photoelectric conversion module (200) and said electric signal processing module (300) are fixed in a portable case.
3. The illuminance meter for measuring general illuminance and EML illuminance according to claim 1, wherein the electric signal processing module (300) and the human-computer interaction module (400) are connected by wireless communication.
4. An illuminance meter for measuring general illuminance and EML illuminance according to claim 3, wherein said wireless communication means includes 4G, 5G, bluetooth and WIFI communication connections.
5. An illuminance meter for measuring general illuminance and EML illuminance according to any one of claims 1 to 3, characterized in that the human-computer interaction module (400) is an intelligent terminal device.
6. An illuminance meter for measuring general illuminance and EML illuminance according to any one of claims 1 to 3, wherein the human-computer interaction module (400) comprises a touch-sensitive display screen.
7. An illuminance meter for measuring general illuminance and EML illuminance according to claim 1, characterized in that the operation of the human-machine interaction module (400) includes setting measurement start and end times; start, stop, clear, and store operations are performed.
8. An illuminance meter for measuring general illuminance and EML illuminance according to claim 1, characterized in that the cosine correction probe (101) employs 180 degree field angle optical grade white diffuse reflection material.
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101799324A (en) * | 2009-12-15 | 2010-08-11 | 杭州远方光电信息有限公司 | Brightness meter |
CN102997992A (en) * | 2012-11-26 | 2013-03-27 | 复旦大学 | Optical dosimeter |
CN203259248U (en) * | 2013-03-07 | 2013-10-30 | 中国计量学院 | Portable colorimeter |
CN205138637U (en) * | 2015-11-27 | 2016-04-06 | 武汉光驰科技有限公司 | A device for photoelectric detector illuminance measurement |
CN108414083A (en) * | 2018-02-27 | 2018-08-17 | 商洛学院 | One kind can the modified multi-functional illuminance transducer of human eye transmissivity and design method |
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- 2021-01-21 CN CN202110083319.5A patent/CN112857567A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101799324A (en) * | 2009-12-15 | 2010-08-11 | 杭州远方光电信息有限公司 | Brightness meter |
CN102997992A (en) * | 2012-11-26 | 2013-03-27 | 复旦大学 | Optical dosimeter |
CN203259248U (en) * | 2013-03-07 | 2013-10-30 | 中国计量学院 | Portable colorimeter |
CN205138637U (en) * | 2015-11-27 | 2016-04-06 | 武汉光驰科技有限公司 | A device for photoelectric detector illuminance measurement |
CN108414083A (en) * | 2018-02-27 | 2018-08-17 | 商洛学院 | One kind can the modified multi-functional illuminance transducer of human eye transmissivity and design method |
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