JPH0530231Y2 - - Google Patents
Info
- Publication number
- JPH0530231Y2 JPH0530231Y2 JP12042786U JP12042786U JPH0530231Y2 JP H0530231 Y2 JPH0530231 Y2 JP H0530231Y2 JP 12042786 U JP12042786 U JP 12042786U JP 12042786 U JP12042786 U JP 12042786U JP H0530231 Y2 JPH0530231 Y2 JP H0530231Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- warning
- heater
- frost
- snow
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12042786U JPH0530231Y2 (enExample) | 1986-08-07 | 1986-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12042786U JPH0530231Y2 (enExample) | 1986-08-07 | 1986-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6327992U JPS6327992U (enExample) | 1988-02-24 |
| JPH0530231Y2 true JPH0530231Y2 (enExample) | 1993-08-02 |
Family
ID=31008731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12042786U Expired - Lifetime JPH0530231Y2 (enExample) | 1986-08-07 | 1986-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0530231Y2 (enExample) |
-
1986
- 1986-08-07 JP JP12042786U patent/JPH0530231Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6327992U (enExample) | 1988-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6909370B2 (en) | Intruder detection device and intruder detection method | |
| US4752768A (en) | Intruder detector with anti-obscuring means | |
| US5486810A (en) | Infrared detector for detecting motion and fire and an alarm system including the same | |
| US8039799B2 (en) | Motion detection system and method | |
| US5283400A (en) | Elevator shaftway intrusion device | |
| JPH09101376A (ja) | 受動型赤外線式人体検知装置 | |
| JPH01500230A (ja) | 物体検知方法と電気光学を用いた装置 | |
| EP0289621A1 (en) | Passive infrared burglar sensor equipped with visual field interruption monitor mechanism | |
| US5420567A (en) | Combination fire/intrusion alarm detectors using active infared elements | |
| US3967258A (en) | Alarm system | |
| JPH0530231Y2 (enExample) | ||
| US4314239A (en) | Portable electronic alarm device | |
| US6317043B1 (en) | Perimeter monitoring system | |
| WO1996006865A1 (en) | Infrared intrusion detector with obscuring detecting apparatus | |
| KR20080015486A (ko) | 침입자 확인 장치 | |
| EP0103375B1 (en) | Alarm system | |
| JP2949286B2 (ja) | 減光式二酸化炭素濃度感知器 | |
| GB2340647A (en) | Duel sensing intruder alarm system suitable for a vehicle | |
| JP2015125022A (ja) | 光学センサ装置 | |
| US2086818A (en) | Alarm system | |
| JPH0641158Y2 (ja) | 光線式検出器の防滴防曇構造 | |
| JPH0587629A (ja) | 熱線式検知器 | |
| JPH0552999B2 (enExample) | ||
| JPH08235456A (ja) | 熱線センサ | |
| JPH0821142B2 (ja) | 光線式警戒装置 |