Title:
路面センサー及び路面の監視制御方法
Document Type and Number:
Japanese Patent JP4092494
Kind Code:
B2
Abstract:
In order to melt snow and prevent freezing without consuming energy wastefully and to monitor a road surface state remotely, a road surface sensor (10) includes: a rotating stand (11) provided so as to be reciprocatingly rotatable upward on the road surface; a snow-Melting/freezing. heat quantity measurement dummy road surface (12) having an electric heater buried therein and to use as a reference road surface for heat quantity measurement to derive a melting heat quantity for snow falling on the surface and a heat quantity required for freezing prevention; a group of sensors attached to the rotating stand so as to be rotatable together, the sensors consisting of: a reference light irradiating/reflected light receiving device (14); a space reflected light receiving device (15); a non-contact road temperature measuring device(16); a non-contact snow cover depth measuring device(17); a road surface image pickup device (18); and a moisture sensor (19). The reference light irradiating/reflected light receiving device (14) includes a reference light irradiating device for irradiating reference light and a reflected light receiving device for receiving the reflected light of the reference light from the road surface, and the reflected light receiving device separates and receives only reflected light of the reference light out of the reflected light from the road surface.
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Inventors:
Tadayuki Yamada
Hiroshi Yamamoto
Makoto Goto
Hiroshi Yamamoto
Makoto Goto
Application Number:
JP2003208615A
Publication Date:
May 28, 2008
Filing Date:
August 25, 2003
Export Citation:
Assignee:
Yamada Giken Co., Ltd.
International Classes:
E01C11/26; G01W1/00; E01C23/07; G01N21/17; G01N21/47; G01W1/14; G08B19/02
Domestic Patent References:
| JP8027713A | ||||
| JP3242594A | ||||
| JP2003114283A | ||||
| JP2001166065A |
Attorney, Agent or Firm:
Hikoji Hirasaki