JPS53106159A - Car detector ultrasonic type - Google Patents
Car detector ultrasonic typeInfo
- Publication number
- JPS53106159A JPS53106159A JP2175177A JP2175177A JPS53106159A JP S53106159 A JPS53106159 A JP S53106159A JP 2175177 A JP2175177 A JP 2175177A JP 2175177 A JP2175177 A JP 2175177A JP S53106159 A JPS53106159 A JP S53106159A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic type
- car detector
- detector ultrasonic
- car
- signals
- 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
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Traffic Control Systems (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To judge and detect a car reliably without any influence from noises and ecores by using as judging signals the differential signals in the stable range of the received ultrasonic waves by an on-delay timer.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2175177A JPS53106159A (en) | 1977-02-28 | 1977-02-28 | Car detector ultrasonic type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2175177A JPS53106159A (en) | 1977-02-28 | 1977-02-28 | Car detector ultrasonic type |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53106159A true JPS53106159A (en) | 1978-09-14 |
JPS5634918B2 JPS5634918B2 (en) | 1981-08-13 |
Family
ID=12063758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2175177A Granted JPS53106159A (en) | 1977-02-28 | 1977-02-28 | Car detector ultrasonic type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53106159A (en) |
-
1977
- 1977-02-28 JP JP2175177A patent/JPS53106159A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5634918B2 (en) | 1981-08-13 |
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