JPS6454222A - Road surface temperature measuring apparatus - Google Patents
Road surface temperature measuring apparatusInfo
- Publication number
- JPS6454222A JPS6454222A JP21051187A JP21051187A JPS6454222A JP S6454222 A JPS6454222 A JP S6454222A JP 21051187 A JP21051187 A JP 21051187A JP 21051187 A JP21051187 A JP 21051187A JP S6454222 A JPS6454222 A JP S6454222A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- road surface
- differential
- surface temperature
- atmospheric
- 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
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
PURPOSE:To enable measurement of a road surface temperature at a high accuracy in a time zone from the evening to the morning, by determining a differential temperature changing with time without being affected by an atmo spheric temperature to be added to the atmospheric temperature. CONSTITUTION:An atmospheric temperature Ta is measured by an atmospheric temperature detecting means 1 while a data of a road surface hourly changing with the action of radiative cooling to the sky from the road surface, namely, ground surface at a fine night is set for a differential temperature deriving means 3 beforehand. Then, a time signal is inputted into the differential temperature deriving means 3 from a time counting means 2 to determine a differential temperature DELTAT every second. Then, the differential temperature DELTAT and the atmospheric temperature Ta are added up by a road surface temperature deriving means 4 to determine a road surface temperature Tr. Thus, when a road surface temperature measuring device is carried on a vehicle to perform a measurement, a road surface temperature Tr at locations can be forecast at a relatively high accuracy every second from the evening to the morning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21051187A JPS6454222A (en) | 1987-08-25 | 1987-08-25 | Road surface temperature measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21051187A JPS6454222A (en) | 1987-08-25 | 1987-08-25 | Road surface temperature measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6454222A true JPS6454222A (en) | 1989-03-01 |
Family
ID=16590581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21051187A Pending JPS6454222A (en) | 1987-08-25 | 1987-08-25 | Road surface temperature measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6454222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695469B2 (en) * | 2001-11-19 | 2004-02-24 | Energy Absorption Systems, Inc. | Roadway freezing point monitoring system and method |
-
1987
- 1987-08-25 JP JP21051187A patent/JPS6454222A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695469B2 (en) * | 2001-11-19 | 2004-02-24 | Energy Absorption Systems, Inc. | Roadway freezing point monitoring system and method |
| US7090392B2 (en) | 2001-11-19 | 2006-08-15 | Energy Absorption Systems, Inc. | Roadway freezing point monitoring system and method |
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