CN115791642A - Photoelectric conversion system and method - Google Patents
Photoelectric conversion system and method Download PDFInfo
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- CN115791642A CN115791642A CN202211462061.0A CN202211462061A CN115791642A CN 115791642 A CN115791642 A CN 115791642A CN 202211462061 A CN202211462061 A CN 202211462061A CN 115791642 A CN115791642 A CN 115791642A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 11
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- 238000004458 analytical method Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 22
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- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
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- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
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Abstract
The invention discloses a photoelectric conversion system and a method, which comprises a light emitting diode, a reference photoelectric conversion system, an optical analysis instrument, a measurement photoelectric conversion system and a photoelectric conversion control unit, wherein light emitted by the light emitting diode is divided into two paths, one path of light is incident into the reference photoelectric conversion system, the other path of light is incident into a solution to be measured, and then the reflected light is incident onto the measurement photoelectric conversion system, the output end of the reference photoelectric conversion system and the output end of the measurement photoelectric conversion system are connected with the input end of the photoelectric conversion control unit, and the output end of the photoelectric conversion control unit is connected with the optical analysis instrument.
Description
Technical Field
The invention belongs to the technical field of analytical instruments, and relates to a photoelectric conversion system and a method.
Background
Most optical analysis instruments can convert an optical signal into an electrical signal by measuring the absorbance of a solution at a specific wavelength of light, thereby calculating the content of ions in the solution, for example, phosphate ions have a good absorbance response value at 700nm, and the content of phosphate ions in the solution can be measured by measuring the absorbance at 700 nm.
At present, when most of optical analysis instruments are designed with photoelectric conversion systems, the photoelectric conversion systems are fixed on reaction tanks of solutions, various chemical reactions can occur after chemical reagents are added into the reaction tanks of the solutions, in order to enable response values of absorbance to change obviously, most of the reactions are precipitation reactions, precipitates generated by the reactions can be attached to a reflector and an optical fiber conducting component of the photoelectric conversion systems, the absorbance response values of the optical analysis instruments can shift after a long time, measurement data are inaccurate, and the inaccuracy of the measurement data of the optical analysis instruments can be frequently caused because whether the absorbance response values of the optical analysis instruments shift or not can not be determined in time in a reaction tank.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a photoelectric conversion system and method, which can determine in time whether a reaction cell causes a shift in the absorbance response value of an optical analysis instrument.
In order to achieve the above object, the photoelectric conversion system of the present invention includes a light emitting diode, a reference photoelectric conversion system, an optical analysis instrument, a measurement photoelectric conversion system, and a photoelectric conversion control unit, wherein light emitted from the light emitting diode is divided into two paths, one of the two paths is incident into the reference photoelectric conversion system, the other path is incident into a solution to be measured, and then is incident onto the measurement photoelectric conversion system after being reflected, an output end of the reference photoelectric conversion system and an output end of the measurement photoelectric conversion system are connected to an input end of the photoelectric conversion control unit, and an output end of the photoelectric conversion control unit is connected to the optical analysis instrument.
The reference photoelectric conversion system comprises a first optical fiber transmission piece and a first photoelectric converter, light emitted by the light emitting diode is incident to the first photoelectric converter through the first optical fiber transmission piece, and the output end of the first photoelectric converter is connected with the photoelectric conversion control unit.
The measuring photoelectric conversion system comprises a second optical fiber transmission piece, a third optical fiber transmission piece and a second photoelectric converter, light emitted by the light emitting diode is incident to the solution to be measured through the second optical fiber transmission piece, the light incident on the solution to be measured is reflected to form reflected light, the reflected light is incident to the second photoelectric converter through the third optical fiber transmission piece, and the output end of the second photoelectric converter is connected with the photoelectric conversion control unit.
The first photoelectric converter and the second photoelectric converter are both of the type OPT 301M.
The first photoelectric converter and the second photoelectric converter convert optical signals in a visible light wavelength range into electric signals of 0-1.5V.
The measuring photoelectric conversion system also comprises a reflector, and light incident on the solution to be measured forms reflected light after being reflected by the reflector.
The position of the reflector at the focus of the solution to be measured is the same as the position of the emitting light receiving point of the third optical fiber transmission member.
The reflector is a plano-concave reflector, and a film is coated on the plano-concave reflector.
The light emitting diode is an LED light emitting diode.
The photoelectric conversion method comprises the following steps:
light emitted by the light emitting diode is respectively incident to a reference photoelectric conversion system and a solution to be measured, the reference photoelectric conversion system performs photoelectric conversion on the incident light, a first electric signal obtained by conversion is input into a photoelectric conversion control unit, the light incident on the solution to be measured is reflected to form reflected light, the reflected light is incident into the measurement photoelectric conversion system to perform photoelectric conversion to obtain a second electric signal, the second electric signal is input into the photoelectric conversion control unit, and the photoelectric conversion control unit sends the first electric signal and the second electric signal obtained by receiving to an optical analysis instrument;
and the optical analysis instrument judges whether the voltage deviation between the first electric signal and the second electric signal is greater than or equal to a preset value, and when the voltage deviation between the first electric signal and the second electric signal is greater than or equal to the preset value, the reaction tank is cleaned and maintained.
The invention has the following beneficial effects:
when the photoelectric conversion system and the method are operated specifically, incident light received by the reference photoelectric conversion system does not pass through a solution to be measured, after the photoelectric conversion system operates for a long time, signal attenuation does not occur to a first electric signal sent by the reference photoelectric conversion system due to reflected pollution, the first electric signal sent by the reference photoelectric conversion system is compared with a second electric signal of a measured pure water solution, when voltage deviation between the second electric signal and the first electric signal is large, the reaction tank can be considered to be required to be taken out for cleaning and maintenance, the data accuracy measured by the reaction tank is judged through the reference photoelectric conversion system, whether the inaccurate reaction tank causes a data problem is judged, and when the second electric signal and the first electric signal are large, the reaction tank is cleaned in time, so that absorbance response value deviation of an optical analysis instrument caused by precipitates in the reaction tank is avoided, and the accuracy of measured data is ensured.
Drawings
FIG. 1 is a schematic diagram of a photoelectric conversion system of the present invention;
wherein, 1 is a light emitting diode, 2 is a first optical fiber transmission member, 3 is a first photoelectric converter, 4 is a second optical fiber transmission member, 5 is a solution to be measured, 6 is a reflector, 7 is a third optical fiber transmission member, 8 is a second photoelectric converter, and 9 is a photoelectric conversion control unit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic structural diagram in accordance with a disclosed embodiment of the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the photoelectric conversion system of the present invention includes a light emitting diode 1, a reference photoelectric conversion system, a measurement photoelectric conversion system, and a photoelectric conversion control unit 9, wherein light emitted from the light emitting diode 1 is divided into two paths, one of the two paths is incident into the reference photoelectric conversion system, the other is incident into a solution 5 to be measured, the solution 5 to be measured is located in a reaction cell, and is incident onto the measurement photoelectric conversion system after being reflected, the reference photoelectric conversion system converts incident light thereof into a first electrical signal and then inputs the first electrical signal into the photoelectric conversion control unit 9, and the measurement photoelectric conversion system converts incident light thereof into a second electrical signal and then inputs the second electrical signal into the photoelectric conversion control unit 9.
The photoelectric conversion method of the present invention includes the steps of:
light emitted by the light emitting diode 1 is respectively incident to a reference photoelectric conversion system and a solution 5 to be measured, the reference photoelectric conversion system performs photoelectric conversion on the incident light, a first electric signal obtained by conversion is input into a photoelectric conversion control unit 9, the light incident on the solution 5 to be measured is reflected to form reflected light, the reflected light is incident into the measurement photoelectric conversion system to perform photoelectric conversion to obtain a second electric signal, the second electric signal is input into the photoelectric conversion control unit 9, and the photoelectric conversion control unit 9 sends the first electric signal and the second electric signal obtained by reception to an optical analysis instrument.
Example one
Referring to fig. 1, in the present embodiment, the reference photoelectric conversion system includes a first optical fiber transmission member 2 and a first photoelectric converter 3, light emitted from the light emitting diode 1 enters the first photoelectric converter 3 through the first optical fiber transmission member 2, and the first photoelectric converter 3 converts an optical signal of the incident light into a first electrical signal and transmits the first electrical signal to the photoelectric conversion control unit 9.
The measuring photoelectric conversion system comprises a second optical fiber transmission piece 4, a third optical fiber transmission piece 7 and a second photoelectric converter 8, light emitted by the light emitting diode 1 is incident to the solution 5 to be measured through the second optical fiber transmission piece 4, the light incident on the solution 5 to be measured is reflected to form reflected light, the reflected light is incident to the second photoelectric converter 8 through the third optical fiber transmission piece 7, and the second photoelectric converter 8 converts an optical signal of the reflected light into a second electric signal and transmits the second electric signal to the photoelectric conversion control unit 9.
In the present embodiment, the types of the first photoelectric converter 3 and the second photoelectric converter 8 are both OPT 301M, and the first photoelectric converter 3 and the second photoelectric converter 8 convert an optical signal in the visible light wavelength range into an electrical signal of 0 to 1.5V.
The measurement photoelectric conversion system further includes a reflecting mirror 6, and light incident on the solution 5 to be measured is reflected by the reflecting mirror 6 to form reflected light.
The position of the reflector 6 at the focus of the solution 5 to be measured is the same as the position of the light-emitting receiving point of the third optical fiber transmission member 7, so that the obtained light intensity is maximum, and the voltage of the converted second electric signal is larger, so that the detection sensitivity is high.
Specifically, the reflector 6 is a plano-concave reflector, a film is coated on the plano-concave reflector, a silver coating is selected as a coating material, the thickness of the coating is 0.1mm, and parameters of the reflector 6 are matched with the selected light emitting diode 1, so that the position of a focus of the reflector 6 is the same as the position of a transmitting light receiving point of the third optical fiber transmission member 7.
The light emitting diode 1 is an LED light emitting diode.
The wavelength range of the light emitted by the light emitting diode 1 is 400nm-760nm. The light emitting diode 1 selects elements in different wavelength visible light ranges according to the solution to be measured, generally selects an LED light emitting diode with the wavelength range of 400-760nm, and is suitable for solution component optical analysis equipment with the visible light range of 400-760 nm.
Example two
The embodiment discloses a photoelectric conversion method based on a photoelectric conversion system of a first embodiment, which includes the following steps:
the photoelectric conversion control unit 9 provides a voltage for the light emitting diode 1, so that the light emitting diode 1 emits light with a wavelength corresponding to the provided voltage, the light emitted by the light emitting diode 1 is incident to the first photoelectric converter 3 through the first optical fiber transmission member 2, and the first photoelectric converter 3 converts an optical signal of the incident light into a first electrical signal and then transmits the first electrical signal to the photoelectric conversion control unit 9; light emitted by the light emitting diode 1 is incident to the solution 5 to be measured through the second optical fiber transmission member 4, the light incident on the solution 5 to be measured is reflected by the reflector 6 to form reflected light, the reflected light is incident to the second photoelectric converter 8 through the third optical fiber transmission member 7, and the second photoelectric converter 8 converts an optical signal of the reflected light into a second electrical signal and transmits the second electrical signal to the photoelectric conversion control unit 9; the photoelectric conversion control unit 9 receives the first electric signal and the second electric signal and sends the first electric signal and the second electric signal to the optical analysis meter.
The invention has the following characteristics:
the invention comprises a light-emitting diode 1, a reference photoelectric conversion system, a measurement photoelectric conversion system and a photoelectric conversion control unit 9, wherein the photoelectric conversion control unit 9 has two functions, namely, a power supply is provided for the light-emitting diode 1, the wavelength of light emitted by the light-emitting diode 1 is adjusted by controlling the output voltage of the power supply so as to carry out targeted measurement on substances to be measured, and the second electric signal sent by the measurement photoelectric conversion system and the first electric signal sent by the reference photoelectric conversion system are received and transmitted to an optical analysis instrument for data analysis and display. The incident light received by the reference photoelectric conversion system does not pass through the solution 5 to be measured, after the system is operated for a long time, the first electric signal sent by the reference photoelectric conversion system can not be attenuated due to reflected pollution, the first electric signal sent by the reference photoelectric conversion system is compared with the second electric signal of the measured pure water solution, and when the voltage deviation between the second electric signal and the first electric signal is large, the system can be considered to need to be taken out of the reaction tank for cleaning and maintenance; according to the invention, the accuracy of the data measured by the reaction tank can be judged by the reference photoelectric conversion system, whether the reaction tank has the problem of inaccurate data or not is judged, and if the reaction tank has the problem of inaccurate data, the reaction tank is cleaned in time, so that the absorbance response value of the optical analysis instrument is prevented from being shifted due to the sediment in the reaction tank, and the accuracy of the measured data is ensured.
According to the invention, light emitted by the light emitting diode 1 is incident to the solution to be measured 5 through the second optical fiber transmission member 4, reflected light is incident to the second photoelectric converter 8 through the third optical fiber transmission member 7, the second photoelectric converter 8 and the first photoelectric converter 3 are not required to be directly and fixedly installed with the reaction cell (the solution to be measured 5) in the whole system, the second photoelectric converter 8 and the first photoelectric converter 3 are prevented from being polluted by the solution to be measured 5, and meanwhile, the second photoelectric converter 8 and the first photoelectric converter 3 are convenient to clean, so that later maintenance is facilitated.
The position of the focal point of the reflector 6 in the solution 5 to be measured is the same as the position of the emitting light receiving point of the third optical fiber transmission member 7, so that the maximum light intensity can be obtained, the converted second electric signal is larger, and the sensitivity is high.
The light emitting diode 1 is an LED light emitting diode, the wavelength range of light emitted by the LED light emitting diode is 400nm-760nm, and the wavelength of the light emitted by the LED light emitting diode is determined according to the photoelectric conversion control unit 9, so that the wavelength of the light emitted by the LED light emitting diode can be flexibly adjusted, and the light emitting diode is suitable for different detection substances. The photoelectric conversion system has high system integration level and can be suitable for solution component optical analysis equipment in a visible light range of 400nm-760nm.
The invention sends the first electric signal sent by the reference photoelectric conversion system and the second electric signal sent by the measurement photoelectric conversion system to the optical analysis instrument, and the first electric signal and the second electric signal are analyzed and displayed by the optical analysis instrument.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A photoelectric conversion system is characterized by comprising a light emitting diode (1), a reference photoelectric conversion system, an optical analysis instrument, a measurement photoelectric conversion system and a photoelectric conversion control unit (9), wherein light emitted by the light emitting diode (1) is divided into two paths, one path of light is incident into the reference photoelectric conversion system, the other path of light is incident into a solution (5) to be measured, and then the solution is incident onto the measurement photoelectric conversion system after reflection, the output end of the reference photoelectric conversion system and the output end of the measurement photoelectric conversion system are connected with the input end of the photoelectric conversion control unit (9), and the output end of the photoelectric conversion control unit (9) is connected with the optical analysis instrument.
2. The photoelectric conversion system according to claim 1, wherein the reference photoelectric conversion system comprises a first optical fiber transmission member (2) and a first photoelectric converter (3), light emitted from the light emitting diode (1) is incident on the first photoelectric converter (3) through the first optical fiber transmission member (2), and an output end of the first photoelectric converter (3) is connected to the photoelectric conversion control unit (9).
3. The photoelectric conversion system according to claim 2, wherein the measuring photoelectric conversion system comprises a second optical fiber transmission member (4), a third optical fiber transmission member (7) and a second photoelectric converter (8), light emitted by the light emitting diode (1) is incident on the solution (5) to be measured through the second optical fiber transmission member (4), the light incident on the solution (5) to be measured is reflected to form reflected light, the reflected light is incident on the second photoelectric converter (8) through the third optical fiber transmission member (7), and an output end of the second photoelectric converter (8) is connected with the photoelectric conversion control unit (9).
4. The photoelectric conversion system according to claim 3, wherein the first photoelectric converter (3) and the second photoelectric converter (8) are each of an OPT 301M type.
5. The photoelectric conversion system according to claim 3, wherein an optical signal in a visible light wavelength range is converted into an electric signal of 0 to 1.5V by the first photoelectric converter (3) and the second photoelectric converter (8).
6. A photoelectric conversion system according to claim 3, characterized in that the measuring photoelectric conversion system further comprises a mirror (6), and light incident on the solution (5) to be measured is reflected by the mirror (6) to form reflected light.
7. The photoelectric conversion system according to claim 6, wherein the reflecting mirror (6) is located at the same position as the position of the light-emitting light-receiving point of the third optical fiber transmission member (7) at the focal point of the solution (5) to be measured.
8. The photoelectric conversion system according to claim 6, wherein the mirror (6) is a plano-concave mirror, and a film is coated on the plano-concave mirror.
9. The photoelectric conversion system according to claim 1, wherein the light emitting diode (1) is an LED light emitting diode.
10. A photoelectric conversion method based on the photoelectric conversion system of claim 1, comprising the steps of:
light emitted by the light emitting diode (1) is respectively incident to a reference photoelectric conversion system and a solution to be measured (5), the reference photoelectric conversion system performs photoelectric conversion on the incident light, a first electric signal obtained by conversion is input into a photoelectric conversion control unit (9), the light incident on the solution to be measured (5) is reflected to form reflected light, the reflected light is incident into the measurement photoelectric conversion system to perform photoelectric conversion to obtain a second electric signal, the second electric signal is input into the photoelectric conversion control unit (9), and the photoelectric conversion control unit (9) sends the received first electric signal and the received second electric signal to an optical analysis instrument;
and the optical analysis instrument judges whether the voltage deviation between the first electric signal and the second electric signal is greater than or equal to a preset value, and when the voltage deviation between the first electric signal and the second electric signal is greater than or equal to the preset value, the reaction tank is cleaned and maintained.
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| CN202211462061.0A CN115791642A (en) | 2022-11-17 | 2022-11-17 | Photoelectric conversion system and method |
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Effective date of registration: 20240603 Address after: 414002 Yuechong Road, Yueyanglou District, Yueyang City, Hunan Province Applicant after: HUANENG HUNAN YUEYANG POWER GENERATION Co.,Ltd. Country or region after: China Applicant after: Zhejiang xire Lihua Intelligent Sensor Technology Co.,Ltd. Address before: 6 / F, block C, science and technology innovation center, 1 cangping Road, Haining warp knitting industrial park, Jiaxing, Zhejiang 314400 Applicant before: Zhejiang xire Lihua Intelligent Sensor Technology Co.,Ltd. Country or region before: China |