JPS5942667Y2 - light detection device - Google Patents
light detection deviceInfo
- Publication number
- JPS5942667Y2 JPS5942667Y2 JP17199479U JP17199479U JPS5942667Y2 JP S5942667 Y2 JPS5942667 Y2 JP S5942667Y2 JP 17199479 U JP17199479 U JP 17199479U JP 17199479 U JP17199479 U JP 17199479U JP S5942667 Y2 JPS5942667 Y2 JP S5942667Y2
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive element
- coil
- resistance
- temperature
- photodetection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
【考案の詳細な説明】
本考案は、光検出装置に関し、さらに詳しくは、被測定
ガスの物性に関連する光を断続光となして光感応素子に
照射し、光感応素子の抵抗値変化によって電気信号を得
る光検出装置に関するものである。[Detailed Description of the Invention] The present invention relates to a photodetection device, and more specifically, the present invention relates to a photodetection device, and more specifically, it irradiates a photosensitive element with intermittent light related to the physical properties of a gas to be measured, and detects a change in the resistance value of the photosensitive element. The present invention relates to a photodetection device that obtains electrical signals.
第1図は、従来の光検出装置の構成説明図であり、図中
、1は光感応素子でたとえばサーミスタポロメーター、
2aおよび2bは加熱コイル、3aは固定抵抗、4はコ
ンデンサ、5は変換器、6は赤外線の連続光を断続光と
なすセクタ、7は光感応素子1の両端に印加する直流電
圧、8はコイル用の電源、9は調節計、10はリニアラ
イザー、11は演算器である。FIG. 1 is an explanatory diagram of the configuration of a conventional photodetector. In the figure, 1 is a photosensitive element, such as a thermistor porometer,
2a and 2b are heating coils, 3a is a fixed resistor, 4 is a capacitor, 5 is a converter, 6 is a sector that makes continuous infrared light into intermittent light, 7 is a DC voltage applied to both ends of the photosensitive element 1, and 8 is a A power source for the coil, 9 a controller, 10 a linearizer, and 11 a computing unit.
また、光感応素子1と固定抵抗3aは直列接続され、そ
れらの接続点Cが、信号取り出し点となっており、加熱
コイル2aおよび2b、コイル用の電源8、調節計9、
リニアライザー10、演算器11で温度制御ループを構
成している。The photosensitive element 1 and the fixed resistor 3a are connected in series, and their connection point C serves as a signal extraction point.
The linearizer 10 and the arithmetic unit 11 constitute a temperature control loop.
上記構成をなす光検出装置において、前記接続点Cから
は光感応素子1と固定抵抗3aとの抵抗比で決まる電圧
信号が得られる。In the photodetector having the above configuration, a voltage signal determined by the resistance ratio between the photosensitive element 1 and the fixed resistor 3a is obtained from the connection point C.
該電圧信号は、一定の直流電圧に交流成分を重畳した交
流信号であり、コンデンサ4で直流電圧をカットされ、
その後変換器5で交流弁のみに対応する所望の出力信号
eへと変換される。The voltage signal is an AC signal in which an AC component is superimposed on a constant DC voltage, and the DC voltage is cut by a capacitor 4.
Thereafter, it is converted by the converter 5 into a desired output signal e corresponding only to the AC valve.
一方、前記接続点Cの電圧信号は、演算器11へも直接
入力され、演算器11、リニアライザー10、調節計9
、コイル用電源8を経る間に対応する操作信号に変換さ
れ、加熱コイル2aおよび2bの電流を制御して恒温槽
の温度コントロールをしている。On the other hand, the voltage signal at the connection point C is also directly input to the arithmetic unit 11, which includes the arithmetic unit 11, the linearizer 10, and the controller 9.
, and is converted into a corresponding operation signal while passing through the coil power supply 8, and controls the current of the heating coils 2a and 2b to control the temperature of the thermostatic oven.
然し乍ら、上記従来例では、光感応素子1に光検出機能
と温度検出機能を併せ持たせているために測定電流が増
大して、光感応素子1が劣化特性をもち検出素子として
長期安定性に欠けるという欠点があった。However, in the above conventional example, since the photosensitive element 1 has both a light detection function and a temperature detection function, the measurement current increases, and the photosensitive element 1 has a deterioration characteristic and is not stable for a long time as a detection element. It had the disadvantage of being lacking.
また前記光感応素子1の形が小さいために、上記測定電
流によって自己加熱を生じ易く、光感応素子1の抵抗増
加をきたし、結果的に恒温槽の温度上昇を暴走させる危
険性も有していた○
本考案は、かかる欠点に鑑みてなされたものであり、そ
の目的は、光感応素子を内蔵する恒温槽の温度を正確に
制御する機能を有し、光感応素子の抵抗値変化によって
電気信号を得る光検出装置を提供するにある。Furthermore, since the photosensitive element 1 is small in size, self-heating is likely to occur due to the measurement current, which increases the resistance of the photosensitive element 1, and as a result, there is a risk of causing the temperature of the thermostatic chamber to rise out of control. The present invention was developed in view of these drawbacks, and its purpose is to have a function to accurately control the temperature of a constant temperature bath containing a photosensitive element, and to generate electricity by changing the resistance value of the photosensitive element. The present invention provides a photodetection device for obtaining a signal.
本考案は、光感応素子を内蔵する恒温槽内で使用されて
いるコイルに恒温槽の熱源と温度検出端の両機能をもた
せ、光感応素子と前記コイルを基板の表面と裏面に付着
し、前記恒温槽の温度を正確に制御しながら被測定ガス
の物性に関連する光を検出して所望の測定をなすことを
特徴としている。The present invention provides a coil used in a thermostatic chamber containing a photosensitive element to function as both a heat source and a temperature detection end of the thermostatic chamber, and attaches the photosensitive element and the coil to the front and back surfaces of a substrate. It is characterized in that desired measurements are made by detecting light related to the physical properties of the gas to be measured while accurately controlling the temperature of the thermostatic chamber.
以下、本考案につL・て図を用いて詳しく説明する。Hereinafter, the present invention will be explained in detail using the drawings.
第2図は、本考案の実施例の構成説明図であり、図中、
3bおよび3cは固定抵抗、12は基板、13はコイル
で例えば白金薄膜ヒーターである。FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention, and in the figure,
3b and 3c are fixed resistors, 12 is a substrate, and 13 is a coil, for example, a platinum thin film heater.
また第2図におけるその他の記号で、第1図と同一のも
のは同一意味をもたせてあり、ここでの説明は省略する
。Further, other symbols in FIG. 2 that are the same as those in FIG. 1 have the same meanings and will not be described here.
第3図は、本考案の実施例における光感応素子周辺部の
構成説明図であり、図中、21aおよび21bは基板、
22はコイル、23は光感応素子、24aおよび24b
はスペーサー、25aおよび25bは反射膜である。FIG. 3 is an explanatory diagram of the structure of the peripheral part of the photosensitive element in the embodiment of the present invention, in which 21a and 21b are the substrates;
22 is a coil, 23 is a photosensitive element, 24a and 24b
is a spacer, and 25a and 25b are reflective films.
尚、上記光感応素子周辺部は、上記一実施例に限定され
るものではなく、光感応素子とコイルが基板で付着され
ている構成の範囲内で種々の変形は可能である。Note that the peripheral area of the photosensitive element is not limited to the one embodiment described above, and various modifications can be made within the scope of the structure in which the photosensitive element and the coil are attached to the substrate.
また、第2図において、コイル13と固定抵抗3cは直
列接続され、コイル13、コイル用電源8、調節計9、
リニアライザー10、および演算器11で温度制御ルー
プを構成している。In addition, in FIG. 2, the coil 13 and the fixed resistor 3c are connected in series, and the coil 13, the coil power source 8, the controller 9,
The linearizer 10 and the arithmetic unit 11 constitute a temperature control loop.
上記構成をなす光検出装置において、コイル13と固定
抵抗3cの接続点りからは、コイル13の抵抗で決まる
電圧信号が演算器11に送出されており、またコイル1
3を流れる電流は固定抵抗3cの電圧降下として検出さ
れて演算器11に送出されている。In the photodetector having the above configuration, a voltage signal determined by the resistance of the coil 13 is sent to the calculator 11 from the connection point between the coil 13 and the fixed resistor 3c, and the coil 1
The current flowing through the resistor 3c is detected as a voltage drop across the fixed resistor 3c and sent to the arithmetic unit 11.
これら入力をもとに、演算器11で演算がなされてリニ
アライザー10へ出力され、リニアライザー10で線型
化されて温度の値として調節計9へ出力される。Based on these inputs, the arithmetic unit 11 performs calculations and outputs them to the linearizer 10, which linearizes them and outputs them as temperature values to the controller 9.
該信号が調節計9であらかじめ設定された値と比較され
、新たな出力をコイル用電源8に発して電源8からの出
力を制御し、而してコイル13の電流を制御することに
よって恒温槽の温度コントロールをしている。The signal is compared with a value set in advance by the controller 9, and a new output is sent to the coil power source 8 to control the output from the power source 8, which in turn controls the current of the coil 13, thereby controlling the constant temperature bath. temperature control.
一方、接続点Cからは、光感素子1と固定抵抗3bとの
抵抗比で決まる電圧信号が送出され、コンデンサ4で直
流電圧がカットされ、変換器5において交流分に対応し
た所望の出力信号eに変換される。On the other hand, a voltage signal determined by the resistance ratio between the photosensitive element 1 and the fixed resistor 3b is sent from the connection point C, the DC voltage is cut off by the capacitor 4, and the desired output signal corresponding to the AC component is output by the converter 5. converted to e.
以上、詳しく説明したような本考案の実施例によれば、
恒温槽の熱源であるコイルに温度検出機能を併せ持たせ
、光感応素子は光検出のみに機能させているために、上
記従来例の場合にみられた過大な測定電流に起因する光
感応素子の抵抗ドリフトや劣化現象が避けられる利点が
ある。According to the embodiment of the present invention as described in detail above,
The coil, which is the heat source of the thermostatic oven, also has a temperature detection function, and the photosensitive element functions only for light detection. This has the advantage of avoiding resistance drift and deterioration phenomena.
また、光感応素子1とコイル13の間隔が従来例の場合
よりも短いので、これらを内蔵する恒温槽も小型化しや
すくなり、且つ恒温槽の熱消費量も従来例より減少でき
る利点がある。Furthermore, since the distance between the photosensitive element 1 and the coil 13 is shorter than in the conventional example, the thermostatic chamber containing them can be easily downsized, and the heat consumption of the thermostatic chamber can also be reduced compared to the conventional example.
更に、コイル13として例えば白金薄膜ヒーターを用い
た場合には、前記光感応素子に比較して、温度−抵抗特
性の非線型性が少ないために、光感応素子を温度検出端
としても機能させている前記従来例に比し、リニアライ
ズが容易であり温度制御ループでのコントロール精度を
向上できる利点もある。Furthermore, when a platinum thin film heater is used as the coil 13, the nonlinearity of temperature-resistance characteristics is less than that of the photosensitive element, so the photosensitive element can also function as a temperature detection terminal. Compared to the conventional example, linearization is easy and control accuracy in the temperature control loop can be improved.
第1図は、従来の光検出装置の構成説明図、第2図は、
本考案の一実施例の構成説明図、第3図は、本考案の一
実施例における光感応素子周辺部の構成説明図である。
1および23・・・・・・光感応素子、3a 、 3b
、および3c・・・・・・固定抵抗、2a、2b、1
3.およヒ22・・・・・・コイル、4・・・・・・コ
ンデンサ、5・・・・・・変換器、6・・・・・・セク
タ、8・・・・・・コイル用電源、9・・・・・・調節
計、10・・・・・・リニアライザ、11・・・・・・
演算器、12,21a、および21b・・・・・・基板
。FIG. 1 is an explanatory diagram of the configuration of a conventional photodetection device, and FIG.
FIG. 3 is an explanatory diagram of the structure of an embodiment of the present invention. FIG. 1 and 23...photosensitive element, 3a, 3b
, and 3c...Fixed resistance, 2a, 2b, 1
3. 22... Coil, 4... Capacitor, 5... Converter, 6... Sector, 8... Power supply for coil , 9... Controller, 10... Linearizer, 11...
Arithmetic unit, 12, 21a, and 21b... board.
Claims (1)
素子に照射し該光感応素子の抵抗値変化によって電気信
号を得る光検出装置において、抵抗値変化によって電気
信号を発する光感応素子と、該光感応素子を内蔵する恒
温槽内で用いられ熱源および温度検出端の両機能を有す
るコイルと、前記光感応素子および前記コイルを夫々表
面および裏面に付着してなる基板とを具備することを特
徴とする光検出装置。In a photodetection device that irradiates a photosensitive element with intermittent light related to the physical properties of a gas to be measured and obtains an electrical signal based on a change in resistance of the photosensitive element, the photosensitive element generates an electrical signal based on a change in resistance. a coil that is used in a thermostatic chamber containing the photosensitive element and has the functions of both a heat source and a temperature detection end; and a substrate having the photosensitive element and the coil attached to the front and back surfaces, respectively. A photodetection device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17199479U JPS5942667Y2 (en) | 1979-12-12 | 1979-12-12 | light detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17199479U JPS5942667Y2 (en) | 1979-12-12 | 1979-12-12 | light detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5689933U JPS5689933U (en) | 1981-07-18 |
JPS5942667Y2 true JPS5942667Y2 (en) | 1984-12-14 |
Family
ID=29682809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17199479U Expired JPS5942667Y2 (en) | 1979-12-12 | 1979-12-12 | light detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5942667Y2 (en) |
-
1979
- 1979-12-12 JP JP17199479U patent/JPS5942667Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5689933U (en) | 1981-07-18 |
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