JPS6481096A - Parking place management control system - Google Patents
Parking place management control systemInfo
- Publication number
- JPS6481096A JPS6481096A JP23835687A JP23835687A JPS6481096A JP S6481096 A JPS6481096 A JP S6481096A JP 23835687 A JP23835687 A JP 23835687A JP 23835687 A JP23835687 A JP 23835687A JP S6481096 A JPS6481096 A JP S6481096A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- control circuit
- ultrasonic wave
- parking place
- sensor control
- 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.)
- Granted
Links
Abstract
PURPOSE:To easily execute the extension change of a parking place managing system by detecting whether a parking car exists or not by using an ultrasonic wave sensor, and also, bringing said sensor to cascade connection. CONSTITUTION:A sensor unit 1 counts 13 a timing signal (b) of a sensor control circuit 2 by a prescribed number. By attending with the start of this counting, an ultrasonic wave is generated, and when the counter 13 is operating, an ultrasonic reflected wave is detected, and sent out to the sensor control circuit 2. Also, based on the end of counting of the counter 13, the start of the sensor unit 1 is urged one after another. The sensor control circuit 2 which has received the reflected wave derives a distance to an object by comparing the time extending from the generation of an ultrasonic wave to its reception with a reference value stored in a memory 47. In such a way, whether a parking car exists or not is decided 46.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23835687A JPS6481096A (en) | 1987-09-22 | 1987-09-22 | Parking place management control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23835687A JPS6481096A (en) | 1987-09-22 | 1987-09-22 | Parking place management control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6481096A true JPS6481096A (en) | 1989-03-27 |
JPH0424760B2 JPH0424760B2 (en) | 1992-04-27 |
Family
ID=17028974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23835687A Granted JPS6481096A (en) | 1987-09-22 | 1987-09-22 | Parking place management control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6481096A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06150194A (en) * | 1992-11-16 | 1994-05-31 | Ishikawa Seisakusho:Kk | Parking state detecting system |
EP0839699A1 (en) * | 1996-10-29 | 1998-05-06 | Siemens Aktiengesellschaft | Antitheft monitoring system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62238355A (en) * | 1986-04-09 | 1987-10-19 | Nippon Kokan Kk <Nkk> | High-strength austenitic steel excellent in resistance to age embrittlement |
-
1987
- 1987-09-22 JP JP23835687A patent/JPS6481096A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62238355A (en) * | 1986-04-09 | 1987-10-19 | Nippon Kokan Kk <Nkk> | High-strength austenitic steel excellent in resistance to age embrittlement |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06150194A (en) * | 1992-11-16 | 1994-05-31 | Ishikawa Seisakusho:Kk | Parking state detecting system |
EP0839699A1 (en) * | 1996-10-29 | 1998-05-06 | Siemens Aktiengesellschaft | Antitheft monitoring system |
Also Published As
Publication number | Publication date |
---|---|
JPH0424760B2 (en) | 1992-04-27 |
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