JPS54137387A - Road condition detector - Google Patents
Road condition detectorInfo
- Publication number
- JPS54137387A JPS54137387A JP4547278A JP4547278A JPS54137387A JP S54137387 A JPS54137387 A JP S54137387A JP 4547278 A JP4547278 A JP 4547278A JP 4547278 A JP4547278 A JP 4547278A JP S54137387 A JPS54137387 A JP S54137387A
- Authority
- JP
- Japan
- Prior art keywords
- road
- reflected waves
- waves
- processor
- reflected
- 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
Abstract
PURPOSE: To make it sure to detect the road conditions at many points by using ultrasonic waves.
CONSTITUTION: A suitable number of ultrasonic transmitting and receiving devices 115 are arranged at a preset level H above a load L. A vehicular detector 101 using a processor is also provided and is connected with a center processor 104 through a modulating device 102 and a demodulator 103. As a result, the time period for which the detector 101 receives the reflected waves from the road L after it transmits the ultrasonic waves is used as a reference. When the reflected waves are received during the time period which is shorter than the reference and within a preset range, vehicular detecting signals DS are deemed as the reflected waves from the road L, while being deemed as the reflected waves from a vehicle CA, when there are reflected waves which are reflected within the range of a road renewing zole La imagined while adding the fluctuation in the transmission speed due to the temperature change, thereby to generate road position data signals DL so that the temperature of the road L is calculated by the processor 104 and so that the number of the vehicles passing can be measured.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4547278A JPS54137387A (en) | 1978-04-17 | 1978-04-17 | Road condition detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4547278A JPS54137387A (en) | 1978-04-17 | 1978-04-17 | Road condition detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54137387A true JPS54137387A (en) | 1979-10-25 |
Family
ID=12720322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4547278A Pending JPS54137387A (en) | 1978-04-17 | 1978-04-17 | Road condition detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54137387A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60131437A (en) * | 1983-12-20 | 1985-07-13 | Mitsubishi Electric Corp | Ultrasonic wave type room temperature measuring device |
CN108956605A (en) * | 2018-06-15 | 2018-12-07 | 武林 | A kind of radiationless detection device for highway flaw detection |
-
1978
- 1978-04-17 JP JP4547278A patent/JPS54137387A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60131437A (en) * | 1983-12-20 | 1985-07-13 | Mitsubishi Electric Corp | Ultrasonic wave type room temperature measuring device |
CN108956605A (en) * | 2018-06-15 | 2018-12-07 | 武林 | A kind of radiationless detection device for highway flaw detection |
CN108956605B (en) * | 2018-06-15 | 2021-04-13 | 武林 | A radiationless detection device for highway is detected a flaw |
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