JPH0459430U - - Google Patents
Info
- Publication number
- JPH0459430U JPH0459430U JP10185590U JP10185590U JPH0459430U JP H0459430 U JPH0459430 U JP H0459430U JP 10185590 U JP10185590 U JP 10185590U JP 10185590 U JP10185590 U JP 10185590U JP H0459430 U JPH0459430 U JP H0459430U
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- frequency noise
- infrared detection
- detection element
- frequency
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Burglar Alarm Systems (AREA)
- Filters And Equalizers (AREA)
Description
図は本考案の一実施例の概略回路図である。
３……焦電検出器のケース、４……電界効果ト
ランジスタ、Ｘ……赤外線検出素子、Ｒ５，Ｒ６
……抵抗、Ｃ５，Ｃ６……コンデンサ。
The figure is a schematic circuit diagram of an embodiment of the present invention. 3...Pyroelectric detector case, 4...Field effect transistor, X...Infrared detection element, R5 , R6
...Resistance, C 5 , C 6 ... Capacitor.
Claims (1)
学系により集光して赤外線検出素子に入射し、こ
の赤外線検出素子で入射赤外線エネルギー量をそ
の変動量に比例する電気信号に変換し、この電気
信号が所定の検出レベルを超えることにより検知
エリア内への物体の進入を検出する赤外線式検出
装置における高周波雑音防止回路において、低減
すべき高周波雑音の周波数付近またはそれより高
い自己共振周波数を有するコンデンサと抵抗とか
らなる高周波雑音吸収回路部を、前記赤外線検出
素子およびこれのインピーダンス変換用の電界効
果トランジスタを組み込んだ焦電検出器のケース
内に、前記電界効果トランジスタに接続して一体
に設けたことを特徴とする赤外線式検出装置の高
周波雑音防止回路。 The infrared light flux emitted from a predetermined detection area is focused by an optical system and incident on an infrared detection element, and this infrared detection element converts the amount of incident infrared energy into an electrical signal proportional to its variation, and this electrical signal is Capacitors and resistors that have a self-resonant frequency near or higher than the frequency of the high-frequency noise to be reduced in a high-frequency noise prevention circuit in an infrared detection device that detects the entry of an object into a detection area by exceeding a predetermined detection level. A high frequency noise absorption circuit section consisting of the above is integrally provided in a case of a pyroelectric detector incorporating the infrared detection element and a field effect transistor for impedance conversion thereof, connected to the field effect transistor. High-frequency noise prevention circuit for infrared detection equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10185590U JPH0516544Y2 (en) | 1990-09-27 | 1990-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10185590U JPH0516544Y2 (en) | 1990-09-27 | 1990-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0459430U true JPH0459430U (en) | 1992-05-21 |
| JPH0516544Y2 JPH0516544Y2 (en) | 1993-04-30 |
Family
ID=31845636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10185590U Expired - Lifetime JPH0516544Y2 (en) | 1990-09-27 | 1990-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0516544Y2 (en) |
-
1990
- 1990-09-27 JP JP10185590U patent/JPH0516544Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0516544Y2 (en) | 1993-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205537980U (en) | Infrared detection circuitry | |
| JPH0374383U (en) | ||
| JPS58151698A (en) | Infrared ray infiltration detector with pyro-electric light receiver | |
| JPS6130183Y2 (en) | ||
| JPH0516544Y2 (en) | ||
| JPS61187112U (en) | ||
| JPS5960587U (en) | Infrared moving object detection device | |
| JPS63129837U (en) | ||
| JP3206446B2 (en) | Pyroelectric infrared detector | |
| JPH041419U (en) | ||
| JPH0122150Y2 (en) | ||
| JPH0319930U (en) | ||
| JPS63185328U (en) | ||
| JPS58564U (en) | television receiver | |
| CN115188151A (en) | Video camera | |
| JPH05299999A (en) | Light receiving circuit | |
| JP2983459B2 (en) | Passive infrared detector shield device | |
| JPS601389Y2 (en) | infrared detection device | |
| JPH0424087U (en) | ||
| JPH0259447U (en) | ||
| JPS6257447U (en) | ||
| JPS61205090U (en) | ||
| JPS62164482U (en) | ||
| JPH03109448U (en) | ||
| JPH0443213U (en) |