JPH0465355B2 - - Google Patents
Info
- Publication number
- JPH0465355B2 JPH0465355B2 JP63045327A JP4532788A JPH0465355B2 JP H0465355 B2 JPH0465355 B2 JP H0465355B2 JP 63045327 A JP63045327 A JP 63045327A JP 4532788 A JP4532788 A JP 4532788A JP H0465355 B2 JPH0465355 B2 JP H0465355B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- detergent liquid
- detection
- voltage
- output
- 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
- 239000003599 detergent Substances 0.000 claims description 70
- 238000001514 detection method Methods 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims description 67
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 244000145845 chattering Species 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63045327A JPH01219587A (ja) | 1988-02-26 | 1988-02-26 | コイン投入口への洗剤液注入検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63045327A JPH01219587A (ja) | 1988-02-26 | 1988-02-26 | コイン投入口への洗剤液注入検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01219587A JPH01219587A (ja) | 1989-09-01 |
| JPH0465355B2 true JPH0465355B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-10-19 |
Family
ID=12716217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63045327A Granted JPH01219587A (ja) | 1988-02-26 | 1988-02-26 | コイン投入口への洗剤液注入検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01219587A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5318164A (en) * | 1992-05-15 | 1994-06-07 | Mars Incorporated | Vending machine apparatus and method to prevent fraud and minimize damage from injected fluids |
| GB2304958B (en) * | 1995-09-07 | 1999-10-27 | Mars Inc | Method and apparatus for protecting a money-handling unit vunerable to liquid |
| US7633380B1 (en) | 2007-04-10 | 2009-12-15 | Gerald Lee Hall | Anti-fraud system for a car wash station |
-
1988
- 1988-02-26 JP JP63045327A patent/JPH01219587A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01219587A (ja) | 1989-09-01 |