JPH02148430U - - Google Patents
Info
- Publication number
- JPH02148430U JPH02148430U JP2707089U JP2707089U JPH02148430U JP H02148430 U JPH02148430 U JP H02148430U JP 2707089 U JP2707089 U JP 2707089U JP 2707089 U JP2707089 U JP 2707089U JP H02148430 U JPH02148430 U JP H02148430U
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- photoelectric element
- vane
- infrared detector
- colored
- 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
Links
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案の一実施例による赤外線検出器
の組立構成図、第２図はカバーを取り外した状態
を示す正面図、第３図はその縦断面図、第４図は
本実施例によるチヨツパ故障診断回路の構成を示
すブロツク図、第５図はその動作を示すタイムチ
ヤート、第６図は従来のチヨツパ方式の赤外線検
出器を示す概略図、第７図はそのスリツト円板を
示す図である。
１……ケース本体、２……カバー、３……プリ
ント基板、４……固定台、５……回転子、７……
回転子保持部、８……コイル、９……焦電型赤外
線素子、１１……光電素子保持部、１２……反射
型光電素子、１３……羽根板、１３ａ，１３ｂ…
…遮光部、２１……クロツク発生器、２２……チ
ヨツパ駆動部、２３……信号処理回路、２４……
出力回路。
Fig. 1 is an assembled configuration diagram of an infrared detector according to an embodiment of the present invention, Fig. 2 is a front view showing the state with the cover removed, Fig. 3 is a longitudinal sectional view thereof, and Fig. 4 is according to the present embodiment. A block diagram showing the configuration of a chopper failure diagnosis circuit, FIG. 5 is a time chart showing its operation, FIG. 6 is a schematic diagram showing a conventional chopper type infrared detector, and FIG. 7 is a diagram showing its slit disk. It is. 1...Case body, 2...Cover, 3...Printed circuit board, 4...Fixing base, 5...Rotor, 7...
Rotor holding part, 8... Coil, 9... Pyroelectric infrared element, 11... Photoelectric element holding part, 12... Reflective photoelectric element, 13... Vane plate, 13a, 13b...
...Light blocking unit, 21...Clock generator, 22...Chopper drive unit, 23...Signal processing circuit, 24...
Output circuit.
Claims (1)
回転子と、 前記回転子を周期的に回動させる回転子駆動手
段と、 前記回転子の回転軸より隔たつた位置に固定さ
れ、前記羽根板によつてその前面が開閉される焦
電型赤外線素子と、 前記羽根板の回動を検出する光電素子と、 前記光電素子の出力に基づいて前記回転子駆動
手段の良否を判別する信号処理回路と、を有する
ことを特徴とする赤外線検出器。 (2) 前記光電素子は反射型光電素子であり、前
記羽根板は前記光電素子に対向する面に反射率の
高い彩色、赤外線検出器のケース内に反射率の低
い彩色を施したことを特徴とする請求項１記載の
赤外線検出器。 (3) 前記回転子に取付けられた羽根板は前記焦
電型赤外線素子に対向する面に反射率の高い彩色
を施したことを特徴とする請求項１記載の赤外線
検出器。[Claims for Utility Model Registration] (1) A rotor provided with rotatably held vanes, rotor driving means for periodically rotating the rotor, and a rotation shaft of the rotor. a pyroelectric infrared element that is fixed at a separated position and whose front surface is opened and closed by the vane; a photoelectric element that detects rotation of the vane; and a photoelectric element that detects rotation of the vane based on the output of the photoelectric element. An infrared detector comprising: a signal processing circuit that determines whether a rotor drive means is good or bad. (2) The photoelectric element is a reflective photoelectric element, and the vane plate has a surface facing the photoelectric element colored with a high reflectance, and the inside of the case of the infrared detector is colored with a low reflectance. The infrared detector according to claim 1. (3) The infrared detector according to claim 1, wherein the vane plate attached to the rotor has a surface facing the pyroelectric infrared element colored with a high reflectance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2707089U JPH02148430U (en) | 1989-03-08 | 1989-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2707089U JPH02148430U (en) | 1989-03-08 | 1989-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148430U true JPH02148430U (en) | 1990-12-17 |
Family
ID=31529942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2707089U Pending JPH02148430U (en) | 1989-03-08 | 1989-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148430U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144428A (en) * | 1981-03-02 | 1982-09-07 | Olympus Optical Co Ltd | Optical chopper |
-
1989
- 1989-03-08 JP JP2707089U patent/JPH02148430U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144428A (en) * | 1981-03-02 | 1982-09-07 | Olympus Optical Co Ltd | Optical chopper |
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