JPH0441431Y2 - - Google Patents
Info
- Publication number
- JPH0441431Y2 JPH0441431Y2 JP3071487U JP3071487U JPH0441431Y2 JP H0441431 Y2 JPH0441431 Y2 JP H0441431Y2 JP 3071487 U JP3071487 U JP 3071487U JP 3071487 U JP3071487 U JP 3071487U JP H0441431 Y2 JPH0441431 Y2 JP H0441431Y2
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- line
- sensing
- intrusion detector
- lines
- 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
Links
- 230000005684 electric field Effects 0.000 claims description 103
- 239000011152 fibreglass Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 8
- 239000012212 insulator Substances 0.000 description 8
- 230000002265 prevention Effects 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3071487U JPH0441431Y2 (enrdf_load_stackoverflow) | 1987-03-03 | 1987-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3071487U JPH0441431Y2 (enrdf_load_stackoverflow) | 1987-03-03 | 1987-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63139691U JPS63139691U (enrdf_load_stackoverflow) | 1988-09-14 |
| JPH0441431Y2 true JPH0441431Y2 (enrdf_load_stackoverflow) | 1992-09-29 |
Family
ID=30835778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3071487U Expired JPH0441431Y2 (enrdf_load_stackoverflow) | 1987-03-03 | 1987-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441431Y2 (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6739415B2 (ja) * | 2017-10-02 | 2020-08-12 | 日本原子力防護システム株式会社 | 侵入検出センサ |
| JP6972247B2 (ja) * | 2017-10-02 | 2021-11-24 | 日本原子力防護システム株式会社 | 侵入検出センサ |
-
1987
- 1987-03-03 JP JP3071487U patent/JPH0441431Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63139691U (enrdf_load_stackoverflow) | 1988-09-14 |
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