JPS63141434U - - Google Patents
Info
- Publication number
- JPS63141434U JPS63141434U JP3423687U JP3423687U JPS63141434U JP S63141434 U JPS63141434 U JP S63141434U JP 3423687 U JP3423687 U JP 3423687U JP 3423687 U JP3423687 U JP 3423687U JP S63141434 U JPS63141434 U JP S63141434U
- Authority
- JP
- Japan
- Prior art keywords
- output
- amplifier
- circuit
- signal
- gain
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Description
第１図は本考案に係る放射温度計の一実施例を
示す接続図、第２図は第１図の回路の動作を説明
するタイミング図、第３図は従来例である。
１……レンズ、２……光学フイルタ、３……光
検出器、４……初段アンプ、５……サンプル＆ホ
ールド回路、６……対数アンプ、７……初段アン
プゲイン切替信号発生回路、８……第２アンプゲ
イン切替信号発生回路、１０……第２アンプ、１
１……アナログ／デイジタル変換回路、１２……
温度演算回路、１３……基準パルス発生回路。
FIG. 1 is a connection diagram showing an embodiment of the radiation thermometer according to the present invention, FIG. 2 is a timing diagram explaining the operation of the circuit shown in FIG. 1, and FIG. 3 is a conventional example. DESCRIPTION OF SYMBOLS 1... Lens, 2... Optical filter, 3... Photodetector, 4... First stage amplifier, 5... Sample & hold circuit, 6... Logarithmic amplifier, 7... First stage amplifier gain switching signal generation circuit, 8 ...Second amplifier gain switching signal generation circuit, 10...Second amplifier, 1
1...Analog/digital conversion circuit, 12...
Temperature calculation circuit, 13...Reference pulse generation circuit.
Claims (1)
て光検出器に与え、この光検出器の出力電気信号
を信号処理回路で処理することにより前記被測定
物体の温度を求めるようにした放射温度計におい
て、前記信号処理回路を、ゲインが切り替えられ
そのゲインに応じて積分時間が変えられる積分機
能を持ち前記光検出器の出力信号が与えられる初
段アンプと、この初段アンプの出力を保持するサ
ンプル＆ホールド回路と、その保持された出力を
対数変換する対数変換回路と、初段アンプのゲイ
ンを決定するために前記対数変換回路の出力より
コンパレータを用いて初段アンプのゲイン切替信
号を発生する回路と、前記サンプル＆ホールド回
路の出力を増幅するためのゲイン切替を持つ第２
アンプと、前記対数アンプ出力よりコンパレータ
を用いて第２アンプのゲイン切替信号を発生する
回路と、前記第２アンプの出力をデイジタル信号
に変換するアナログ／デイジタル変換回路と、こ
のアナログ／デイジタル変換回路の出力信号を温
度に変換する演算を行う演算回路とで構成したこ
とを特長とする放射温度計。 A radiation thermometer in which the temperature of the object to be measured is determined by applying emitted light from the object to be measured to a photodetector via an optical filter and processing the electrical signal output from the photodetector by a signal processing circuit. In the above, the signal processing circuit includes a first stage amplifier which has an integration function whose gain is switched and whose integration time is changed according to the gain and is supplied with the output signal of the photodetector, and a sample amplifier which holds the output of this first stage amplifier. a hold circuit, a logarithmic conversion circuit that logarithmically converts the held output thereof, and a circuit that generates a gain switching signal for the first stage amplifier using a comparator from the output of the logarithmic conversion circuit to determine the gain of the first stage amplifier; a second with gain switching for amplifying the output of the sample and hold circuit;
an amplifier, a circuit that uses a comparator to generate a gain switching signal for a second amplifier from the output of the logarithmic amplifier, an analog/digital conversion circuit that converts the output of the second amplifier into a digital signal, and the analog/digital conversion circuit. A radiation thermometer characterized by comprising an arithmetic circuit that performs arithmetic operations to convert an output signal into temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3423687U JPH0452661Y2 (en) | 1987-03-09 | 1987-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3423687U JPH0452661Y2 (en) | 1987-03-09 | 1987-03-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63141434U true JPS63141434U (en) | 1988-09-19 |
| JPH0452661Y2 JPH0452661Y2 (en) | 1992-12-10 |
Family
ID=30842594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3423687U Expired JPH0452661Y2 (en) | 1987-03-09 | 1987-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452661Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0389144A (en) * | 1989-08-31 | 1991-04-15 | Nikkiso Co Ltd | Automatic switching apparatus of measuring range of surface area measuring apparatus |
| WO2002103308A1 (en) * | 2001-06-18 | 2002-12-27 | Hamamatsu Photonics K.K. | Photosensor |
-
1987
- 1987-03-09 JP JP3423687U patent/JPH0452661Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0389144A (en) * | 1989-08-31 | 1991-04-15 | Nikkiso Co Ltd | Automatic switching apparatus of measuring range of surface area measuring apparatus |
| WO2002103308A1 (en) * | 2001-06-18 | 2002-12-27 | Hamamatsu Photonics K.K. | Photosensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452661Y2 (en) | 1992-12-10 |
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