JPS6088331A - Colormetric detector - Google Patents

Abstract

PURPOSE:To enable electric selection of light with a disired wavelength with a simple construction by selectively detecting a series data pertaining to light analyzed with a plurality of photoelectric conversion elements arranged one- dimensionally. CONSTITUTION:A light analyzed with a spectroscope 10 is incident into a photoelectric conversion element train body 20 comprising a plurality of charge storage type photoelectric conversion elements arranged one-dimensionally whose analog output is sent out as series data in response to rays of light different in the wavelength by a shift register pulse. Then, a wavelength signal detection circuit 40 selectively detects analog data with the desired from among the series data from the element train body 20 according to a control signal corresponding to the position of the photoelectric conversion element. Thus, the colorimetric detector thus obtained can detect a plurality of wavelengths close to each other with a simple construction.

Description

[Detailed description of the invention]

present invention

[This is directly related to colorimetric detection V using a photoelectric conversion element array consisting of a plurality of 19 photoelectric converters arranged in a -dimensional manner. Croix 1 - A colorimetric detection device used in graphs, etc. (a plurality of small, -dimensionally arranged photoelectric conversion elements
．． Simultaneous photometry of all wavelengths is carried out using a photoelectric conversion element array (), and the analogue (g) detected by the photoelectric conversion element array is
';83 to △/1] converted to digital No. 16 using a converter and stored for 11 minutes, and these -11,'743 stored digital (g g; After performing arithmetic processing according to a predetermined purpose, it is converted into an analog signal using a 7'△ transformer, and the converted analog signal is added to a recorder to record its magnitude 4 Recorded by J, there is something that was created by Uni TF4. However, this type of configuration requires rough hardware in addition to hardware, and has the drawback of increasing cost. In addition, as another device, a plurality of single photoelectric conversion elements are placed at the focal point 11ii of the polychromator, and a reliable amplifier system is provided for each Z element to perform wavelength detection. There is something configured. However, with such a configuration, changing the measurement wavelength is extremely difficult, and in the past, when detecting multiple wavelengths in close proximity, it has been The present invention has been made in view of these points, and its purpose is to be able to electrically select a desired wavelength with a relatively simple circuit configuration, and to 1. The object of the present invention is to provide 12 colorimetric detection devices capable of detecting a plurality of wavelengths. Control according to the position of the 11 photoelectric conversion elements that are extracted by serial data of the ant [1gk) related to the separated light and the position of each photoelectric conversion element that makes up the photoelectric conversion element array. (hashish i,'
Selectively detect the analog signal G8 of at least one wave from among the serial data LQ (
+? ;j detection circuit. A detailed description of the invention will now be given with reference to the drawings. FIG.
The light is emitted for one minute at 1. : Add light to four photoelectric conversion element rows 20 (convert it to i' J 1.
The cog amplifies the signal: 30 (after amplification, in addition to the wavelength (M) detection circuit 40, C1 selectively detects the analog signal of the desired wavelength, and records the selected (R alog (Q)). A total of 50'c was recorded as 174 times. ㅅ) In the optical device 10j, as shown in FIG. In addition,
The light separated in the first bar 4δ and 13 is reflected by a mirror 14 and a mirror 15 to enter a lens 16 (IL, the output of the lens 16) and the sample is added to a lens 17. Further, the photoelectric conversion element array 2 OL;J is one in which multiple photoelectric conversion elements are arranged one-dimensionally, for example, one
28 photoelectric conversion elements are arranged at equal intervals over a total length of 3111 m and housed in a dual-line package, and are spectrally separated.
A power storage type is used in which the cog output signal is sent out as serial data according to shift register pulses. The wavelength flI number detection circuit 40 detects the serial data sent from the optical multiplex conversion element array 1H2o in accordance with the control signal corresponding to the position of each photoelectric conversion element constituting the optical multiplex conversion element array 1E20. Anno-1 cog (8
This feature provides a function to selectively detect signals. Figure 3 shows this wavelength 1; 1 of the i detection circuit 4o; 1
This is a circuit diagram showing an example of 1+, in which a single wavelength is detected. A desired single wavelength analog signal is selected and detected from 1/j and 7. In Figure 3, there is J3, and from J K-Nori y Tsuno II Tsu 1/11, 4 pits 1 to counter 42.43
A clear V signal is sent out. 4-bit counter/12
μ, the frequency is divided to 1/4 by the 1/2 frequency divider 44,715, and I
The ζ clock signal is applied to the 4-pin 1-no counter 43.
The 4-bit count 42 has been added with a key (, ;). 1] type flippf 1" knob 7'I6 and 17 + other disjunction gate 47 each inputs 1 to 8 bits 1. Set 8 sea urchins each in the sea urchin and j sea urchin.
Clock end J' (Y, J K
It is connected to the J terminal of Noritsuno Frotub 41, and the D
67! 'To complete, - select the corresponding bit 1/J
Eaves; J"2° ~ 27 are connected. Also, Q'l
: r 1. L IJ corresponding name jJl other disjunction game 1
The other input terminal of each exclusive OR group 1-47 is
λ·I I,i:;L/,,: 4-pitch 1-no counter 42. /13 each pin 1 - output terminal Qa
= Qd and Q a L to Qd' are connected, and the output terminal C is connected to the power supply q, H to V and J through the resistor R, and is connected to the control terminal a of the sample and hold circuit 48. Sample and hold circuit 48
Serial data sent out from the photoelectric conversion element array 20 is added to the input horn terminal C, and a sampled and held desired single-wavelength analog signal is output from the output terminal C.
Sent to 0. The operation of the apparatus configured as described above will be explained using the waveform diagram shown in FIG. 6 in Figure 3. For example, dip-type switches are connected to pins 1 to 2° to 27 connected to the D terminal of the D-type flip-flop/16, respectively, and the A and A] stages of these dip-type switches are set accordingly. The position of each of the 128 charging conversion elements constituting the photoelectric conversion element array 20 is selectively designated. Come on, ItIl! ! From the digital OR gate 47, the target single-wavelength analog signal (1+) as shown in FIG. 4 is selected from the serial data S1 as shown in FIG. E@
Select S2] II! A control signal for extracting the data is output to the sample hold circuit 41). As a result, the non-pull hold circuit 48 holds the rippled Anno-1 cog low i: until the next control signal is applied, and sends out a continuous analog signal S3 like the fourth one (C). Ru. Here, for example, the optical city conversion element array 2
As mentioned above, 128 photoelectric conversion elements have a total length of 3
1 old 11 (using those arranged at equal intervals, 0
Assuming that the wavelength of 2011111~47Or+m is to be measured, the spectrometer 10 is 150/3-50 diameter m/number of line segments of 1 × b, and the wavelength is alη
The angle of the diffraction grating 13 is adjusted so that the output of the 64th photoelectric conversion element becomes maximum. 1 Sorrow key D
i”J, then J,i. In addition, medium heat f-
If an appropriate spectral source is not found for 1'Ii, in a spectrometer using 11i 125 了, a proportional relationship is established between the photoelectric variable detector T'sho 2J11 and the measurement wavelength λ11. , the thread finishing number F411 can be determined from the following formula. 11 ・(λ11 −λs) / ((λ2−λ,
)/Ml... (1) Here, λ1 is the lower limit of the measurement wavelength, λ2 is the upper limit of the measurement wavelength, and M is the total number of elements. According to such a 416 configuration, it is possible to easily select any wavelength electrically using just a bird's eye, which reduces costs compared to conventional configurations that require software.
' can be done. Furthermore, compared to the conventional configuration in which a plurality of single photoelectric conversion elements are arranged, sufficiently superior detection resolution for adjacent wavelengths can be obtained. Furthermore, by using a plurality of single wavelength signal detection circuits and recorders having similar configurations, it is also possible to selectively detect a plurality of arbitrary wavelengths. Generally, in the routine 1i, the maximum absorption or the absorption of the 4i wave LkIIlli with less interference is often observed over time, and once the wavelength is set, it is unlikely to be changed. In addition, in the above embodiment, a single wavelength detection circuit is used as a wavelength signal detection circuit to detect a single wavelength. Although an example has been described in which analogs (ji IEs) of adjacent plural +)llil photoelectric conversion elements are simultaneously taken out via a number hold circuit. In order to select n elements corresponding to the wavelength width required for measurement, a continuous pulse train of 11 (,?@n
It is only necessary to use one circuit, and with this, it is possible to obtain a predetermined light intensity (q) for incident light having a certain distribution. In addition, in the embodiment described in F, the selected wavelength is set by
An example is shown in which the value is set using 1, Δ], but it is inconvenient that the neck of the selected photoelectric conversion element must be displayed in binary. In such a case, please refer to Figure 5.CD→
If a binary number conversion circuit is used, a total of 12 BCls (4 each for MSD and LSD) O・~127 by the lLi line
It is possible to display up to 100% in decimal notation, which improves operability. FIG. 6 shows an example of automatic sweeping using a counter, and the displayed values of the display 1 P1 to DP3 are sequentially counted up and overturned from 0 to 128. When the number of the photoelectric conversion element corresponding to the target wavelength is reached, the stop switch SW is turned to A, and the 1st to 2nd cycles are stopped by 1 and the 1st shift is applied to each latch. The pulse is memorized and held until the stop switch SW is turned to A-off and the next pulse is input. With such a configuration, automatic sweeping can be performed to correspond to the desired wavelength and the sweep can be stopped at the position of the photoelectric variable 4IA element, making it easy to detect the analog 4g8 of the desired wavelength. be able to. In addition, in each of the above embodiments, only the place β of each photoelectric conversion element constituting the photoelectric conversion element is expressed as a binary number or f! Although we have shown an example of setting in decimal numbers, by configuring it as shown in Figure 7, the position of the selected photoelectric conversion element can be automatically set using wave J2.
It is also possible to display it on fiQ. That is, if formula (1) is modified, the measurement wavelength λ11 of prefecture number 11 is λ11-21+in(λ2-21) 7'M l...
(2) Shi/X, t--L, #E1m+-r>l,
-, 1BAI+, 2Lwo+J2d-;-\-. In this figure, J3 is stored in the first memory M1...
Then, store the lower limit 1i (i/l) of the constant wavelength, and store the L-limit value λ2 of the measurement wavelength in the second meter M2. Then, calculate (λ2 - λI) and use the result as the 3rd name
Stored in 3. Next, using the total number of elements M, T' (/l,
−/+1 ＞/M is calculated and the result of ゛((() is stored in the fourth mesh M4. Next, using element number 11, n (λ
2−λ+)/M and take the result as ! 5 memory M
Stored in 5. After that, using the lower limit of the measurement wavelength 1st λl stored in the closed 1st mesh Ml, λ, (-(n
(λ2-λ+)/M) and displays the result on the display. With this configuration, it is possible to directly display and cover the position 1 of the photoelectric conversion element with the corresponding wavelength value λ11. becomes easier. Historically, in each of the above embodiments, as a photoelectric conversion element array -r
An example is shown in which a photoelectric conversion element composed of 1281161 is used, but the number is not limited to this, and it goes without saying that the number can be increased or decreased. As explained above, according to the present invention, the wavelength of ffa can be electrically selected using a relatively simple configuration using a plurality of photoelectric conversion elements J arranged in a -dimensional manner and another photoelectric conversion element array. Therefore, it is possible to realize a colorimetric detection M position where multiple waves J (I) can be detected in close proximity.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention, FIG. 2 is a configuration diagram showing an example of a spectrometer used in the present invention, and FIG. 3 is a specific example of a wavelength signal detection circuit used in the present invention. Circuit diagram, 4th
The figure is a waveform diagram to explain the operation of Figure 3, and Figure 5 is)
Figure 6 is a circuit diagram for specifying the selection position in decimal notation, Figure 6 is a circuit diagram for automatically subtracting the selection position by 1i'j3, and Figure 7 is for the selection I.
It is a side view of a circuit that is digitally displayed when F<wavelength 4-no. 10... Spectrometer 20... Photoelectric conversion cord array 3o.
...Amplifier 40...Wave 1: '51i: Signal detection circuit 5
0...Record lesson Qh KT applicant "1hondenshi Co., Ltd. agent patent attorney 1
− Osamu Tsukishima Fuji

Claims (1)

[Claims] A photoelectric conversion yA element array consisting of a plurality of photoelectric conversion elements arranged one-dimensionally and extracting analog signals related to separated light as serial data, and each photoelectric conversion element array constituting the photoelectric conversion element array. A colorimetric detection device comprising: a wavelength signal detection circuit that selectively detects a target analog signal of at least one wavelength from the serial data according to a control signal according to the position of the variable 191 element. .