JPS6431082A - Vehicle detecting method - Google Patents
Vehicle detecting methodInfo
- Publication number
- JPS6431082A JPS6431082A JP18745587A JP18745587A JPS6431082A JP S6431082 A JPS6431082 A JP S6431082A JP 18745587 A JP18745587 A JP 18745587A JP 18745587 A JP18745587 A JP 18745587A JP S6431082 A JPS6431082 A JP S6431082A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- wave
- circularly polarized
- antenna
- polarized wave
- 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.)
- Pending
Links
Landscapes
- Traffic Control Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To enhance the detecting accuracy of a vehicle on a road, by receiving a circularly polarized wave in the same rotating direction as that of emitted wave among the reflected wave from the vehicle with a receiving antenna, and detecting the vehicle based on the received signal level. CONSTITUTION:An antenna 5, which emits a circularly polarized wave, is provided at a specified position in a road traffic network. The circularly polarized wave is continuously emitted to a road surface 2 from the antenna 5. When a vehicle 1 enters in a region, where the wave is emitted, an antenna 5' for receiving the circularly polarized wave receives the circularly polarized wave in the same rotating direction as that of the reflected wave among the reflected waves from the vehicle 1. The detected signal is transmitted to a control station. The traffic density is computed in the control station based on the number of vehicles, and the traffic can be controlled. Vehicle detection errors due to a natural environment element such as wind are prevented. Therefore, there exists no vehicle detection error at the time of traffic jam as observed in a doppler radar system. Thus, the vehicle can be detected accurately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18745587A JPS6431082A (en) | 1987-07-27 | 1987-07-27 | Vehicle detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18745587A JPS6431082A (en) | 1987-07-27 | 1987-07-27 | Vehicle detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6431082A true JPS6431082A (en) | 1989-02-01 |
Family
ID=16206375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18745587A Pending JPS6431082A (en) | 1987-07-27 | 1987-07-27 | Vehicle detecting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6431082A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5036011A (en) * | 1986-09-09 | 1991-07-30 | Director Of National Food Research Institute, Ministry Of Agriculture, Forestry And Fisheries | Novel Aureobasidium sp. microorganisms and method for obtaining the same, and method for preparing erythritol with the same |
| JPH0583897U (en) * | 1992-04-07 | 1993-11-12 | 三菱電機株式会社 | Traffic control equipment |
| JP2000035477A (en) * | 1998-07-17 | 2000-02-02 | Denso Corp | Driving lane detecting method and driving lane detecting device |
| JP2007183799A (en) * | 2006-01-06 | 2007-07-19 | Sumitomo Electric Ind Ltd | Vehicle detection system and vehicle detecting method |
-
1987
- 1987-07-27 JP JP18745587A patent/JPS6431082A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5036011A (en) * | 1986-09-09 | 1991-07-30 | Director Of National Food Research Institute, Ministry Of Agriculture, Forestry And Fisheries | Novel Aureobasidium sp. microorganisms and method for obtaining the same, and method for preparing erythritol with the same |
| JPH0583897U (en) * | 1992-04-07 | 1993-11-12 | 三菱電機株式会社 | Traffic control equipment |
| JP2000035477A (en) * | 1998-07-17 | 2000-02-02 | Denso Corp | Driving lane detecting method and driving lane detecting device |
| JP2007183799A (en) * | 2006-01-06 | 2007-07-19 | Sumitomo Electric Ind Ltd | Vehicle detection system and vehicle detecting method |
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