Title:
INCLINATION MEASURING DEVICE AND INCLINATION ANGLE CALCULATING METHOD
Document Type and Number:
Japanese Patent JP2007155520
Kind Code:
A
Abstract:
To provide an inclination measuring device capable of precisely measuring the inclination angle of a road surface.
An ultrasonic signal is transmitted toward the road surface by a transmitter 3, and a reflection signal of the ultrasonic signal is received by a receiver 4. The intensity of the reflection signal is measured in a control part 5A, and the time since the ultrasonic signal is transmitted until the intensity of the reflection signal is not more than a prescribed value is measured. The longest distance reached by the ultrasonic signal until the intensity of the reflection signal is not more than the prescribed value is calculated, and the inclination angle of the road surface is measured on the basis of the longest time.
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Inventors:
NAKAMURA MITSUNORI
OKI TAKAHIKO
OKI TAKAHIKO
Application Number:
JP2005351782A
Publication Date:
June 21, 2007
Filing Date:
December 06, 2005
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
G01C9/00; G01B17/00; G01S15/88
Attorney, Agent or Firm:
Fuyuki Nagai