JPS55131733A - Pyroelectric system infrared ray detector - Google Patents

Pyroelectric system infrared ray detector

Info

Publication number
JPS55131733A
JPS55131733A JP3876379A JP3876379A JPS55131733A JP S55131733 A JPS55131733 A JP S55131733A JP 3876379 A JP3876379 A JP 3876379A JP 3876379 A JP3876379 A JP 3876379A JP S55131733 A JPS55131733 A JP S55131733A
Authority
JP
Japan
Prior art keywords
sum
output
elements
operational amplifier
pyroelectric
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.)
Pending
Application number
JP3876379A
Other languages
Japanese (ja)
Inventor
Keigoro Shigiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3876379A priority Critical patent/JPS55131733A/en
Publication of JPS55131733A publication Critical patent/JPS55131733A/en
Pending legal-status Critical Current

Links

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
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
    • G01J5/35—Electrical features thereof
    • 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
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

PURPOSE:To compensate temperature exactly by providing two pyroelectric elements, two diodes, which are reversely connected to each other in parallel between output electrodes of the said elements, and one operational amplifier in which outputs of the said elements are fed to its input terminal and by which the sum of said inputs is provided as its output. CONSTITUTION:When the infrared rays 21, 31 with the same intensity, which are emitted from the same object, are applied to the pyroelectric elements 22, 32, voltages, which are positive-negative symmetric with each other and values of which are equal to each other, are developed at the capacitors 51, 52. When these voltages are applied to the positive and negative side inputs of the operational amplifier 59 through the resistor 55, 57 respectively, the sum of these voltaes can be obtained at the output terminal 60. When the switches 53, 54 are closed to connect the circuit directly, a greater signal is developed as the sum of logarithmic compression. In this way, since temperature is cimpensated by the diodes 29, 30, which are reversely connected to each other in parallel between the electrodes 24, 34 and the sum of both outputs is obtained through the operational amplifier 59, the output can be obtained as the sum of logarithmic compression simply.
JP3876379A 1979-03-30 1979-03-30 Pyroelectric system infrared ray detector Pending JPS55131733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3876379A JPS55131733A (en) 1979-03-30 1979-03-30 Pyroelectric system infrared ray detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3876379A JPS55131733A (en) 1979-03-30 1979-03-30 Pyroelectric system infrared ray detector

Publications (1)

Publication Number Publication Date
JPS55131733A true JPS55131733A (en) 1980-10-13

Family

ID=12534314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3876379A Pending JPS55131733A (en) 1979-03-30 1979-03-30 Pyroelectric system infrared ray detector

Country Status (1)

Country Link
JP (1) JPS55131733A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57175931A (en) * 1981-04-24 1982-10-29 Matsushita Electric Ind Co Ltd Pyroelectric type infrared light detector
WO1986007449A1 (en) * 1985-06-06 1986-12-18 Nippon Ceramic Co., Ltd. Pyroelectric infrared sensor
US4933559A (en) * 1987-05-29 1990-06-12 Sumitomo Metal Mining Co., Ltd. Pyroelectric infrared sensor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57175931A (en) * 1981-04-24 1982-10-29 Matsushita Electric Ind Co Ltd Pyroelectric type infrared light detector
JPS6238649B2 (en) * 1981-04-24 1987-08-19 Matsushita Electric Ind Co Ltd
WO1986007449A1 (en) * 1985-06-06 1986-12-18 Nippon Ceramic Co., Ltd. Pyroelectric infrared sensor
US4933559A (en) * 1987-05-29 1990-06-12 Sumitomo Metal Mining Co., Ltd. Pyroelectric infrared sensor

Similar Documents

Publication Publication Date Title
GB1504414A (en) Dual channel infrared intrusion alarm system
ES458433A1 (en) Device for measuring at least one dimension of an object and a method of operating said device
JPS56128433A (en) Detecting apparatus of temperature
GB863107A (en) Improvements in or relating to electroluminescent cells and methods of operating such cells
JPS55131733A (en) Pyroelectric system infrared ray detector
JPS55131732A (en) Pyroelectric system infrared ray detector
US3112403A (en) Electroluminescent information processing circuit
JPS55113920A (en) Infrared ray detector
GB911311A (en) Transducer device
JPS5341969A (en) Analogue signal selecting circuit
JPS568911A (en) Btl amplifier
GB1225644A (en)
FR83613E (en) Integrator circuit including an amplifier c. c., a capacitor connected between the input and the output of the amplifier, and, if necessary, a switch in the input connection
ES346772A1 (en) Electronic circuit comprising linear and logarithmic d.c. measuring channels designed for simultaneous operation
JPS56111970A (en) Analog mutiplier and divider
US3296441A (en) Infrared temperature and frequency compensation circuit
SU744911A1 (en) Phase-response amplifier-demodulator
JPS55121750A (en) Compander
JPS54161984A (en) Infrared ray detector
SU995268A1 (en) Amplifier
JPS53142148A (en) Anti-logarithm conversion circuit
JPS56137332A (en) Optical not circuit
SU1149382A1 (en) Amplifying device
JPS56105559A (en) Analog operator
JPS5352348A (en) Cmos input circuit