JPS56158924A - Automatic luminance thermometer - Google Patents
Automatic luminance thermometerInfo
- Publication number
- JPS56158924A JPS56158924A JP6259580A JP6259580A JPS56158924A JP S56158924 A JPS56158924 A JP S56158924A JP 6259580 A JP6259580 A JP 6259580A JP 6259580 A JP6259580 A JP 6259580A JP S56158924 A JPS56158924 A JP S56158924A
- Authority
- JP
- Japan
- Prior art keywords
- output
- integrator
- circuit
- switch
- signal
- 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
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
Classifications
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
Abstract
PURPOSE:To obtain stable output even in the case of low luminance without using any rotating mechanism by using photodiodes in place of rotating sectors. CONSTITUTION:Photocurrents corresponding to the radiation energy of an object X to be measured and a comparing radiator R flow in photodiodes D1, D2 via an optical system 1. When a switch SW1 is held closed, the photocurrent of the diode D1 is integrated by an integrator 2, and the output of the integrator 2 increases in a negative direction. When the output of the integrator 2 equals to a reference power source -Es, the output of a comparator 5 inverts, and a control circuit 7 turns the switch SW1 off. On the other hand, a switch SW2 also makes on-off action in synchronization with SW1, and while the switch SW2 is held closed, an integrator 3 integrates the photocurrents of the diode D2. The final output of this integrator 3 is held in a holding circuit 4, and an amplifier 6 sends a signal to a control circuit 9 so that the deviation between the output of the circuit 4 and the voltage -Es is made zero. Upon receiving this signal, the circuit 9 drives the radiator R. The output of the circuit 9 is converted 10 to the signal corresponding to temp. and is outputted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55062595A JPS6058816B2 (en) | 1980-05-12 | 1980-05-12 | automatic brightness thermometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55062595A JPS6058816B2 (en) | 1980-05-12 | 1980-05-12 | automatic brightness thermometer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56158924A true JPS56158924A (en) | 1981-12-08 |
JPS6058816B2 JPS6058816B2 (en) | 1985-12-21 |
Family
ID=13204826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55062595A Expired JPS6058816B2 (en) | 1980-05-12 | 1980-05-12 | automatic brightness thermometer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6058816B2 (en) |
-
1980
- 1980-05-12 JP JP55062595A patent/JPS6058816B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6058816B2 (en) | 1985-12-21 |
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