JPH0241757Y2 - - Google Patents
Info
- Publication number
- JPH0241757Y2 JPH0241757Y2 JP1981081863U JP8186381U JPH0241757Y2 JP H0241757 Y2 JPH0241757 Y2 JP H0241757Y2 JP 1981081863 U JP1981081863 U JP 1981081863U JP 8186381 U JP8186381 U JP 8186381U JP H0241757 Y2 JPH0241757 Y2 JP H0241757Y2
- Authority
- JP
- Japan
- Prior art keywords
- snow
- light
- slit
- receiver
- vehicle
- 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
- 230000003287 optical effect Effects 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 35
- 239000011521 glass Substances 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000008018 melting Effects 0.000 description 30
- 238000002844 melting Methods 0.000 description 30
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000005413 snowmelt Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 229910001120 nichrome Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000012550 audit Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981081863U JPH0241757Y2 (de) | 1981-06-03 | 1981-06-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981081863U JPH0241757Y2 (de) | 1981-06-03 | 1981-06-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57194197U JPS57194197U (de) | 1982-12-09 |
| JPH0241757Y2 true JPH0241757Y2 (de) | 1990-11-07 |
Family
ID=29877358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981081863U Expired JPH0241757Y2 (de) | 1981-06-03 | 1981-06-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241757Y2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2527831Y2 (ja) * | 1988-03-22 | 1997-03-05 | 三菱重工業株式会社 | 屋外用光電検出装置 |
| JP5507196B2 (ja) * | 2009-10-13 | 2014-05-28 | 株式会社ユニ・ロット | 車両検知器の凍結防止装置 |
| JP6930225B2 (ja) * | 2017-06-01 | 2021-09-01 | 富士電機株式会社 | 車両検知装置 |
| JP7264010B2 (ja) * | 2019-10-25 | 2023-04-25 | 株式会社ダイフク | 洗車機 |
-
1981
- 1981-06-03 JP JP1981081863U patent/JPH0241757Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57194197U (de) | 1982-12-09 |
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