PRESSURE SENSITIVE SENSOR, GRASPER, AND ROBOTIC SYSTEM

PROBLEM TO BE SOLVED: To provide a pressure sensitive sensor capable of detecting a small load by improving the accuracy of detecting the load even in the case that pressure-sensitive conductive rubber is pressurized so that an electrical resistivity of the pressure-sensitive conductive rubber decre...

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Bibliographic Details
Main Author SASAJIMA KENTA
Format Patent
LanguageEnglish
Published 18.07.2013
Subjects
CHAMBERS PROVIDED WITH MANIPULATION DEVICES
HAND TOOLS
MANIPULATORS
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
PERFORMING OPERATIONS
PHYSICS
PORTABLE POWER-DRIVEN TOOLS
TESTING
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a pressure sensitive sensor capable of detecting a small load by improving the accuracy of detecting the load even in the case that pressure-sensitive conductive rubber is pressurized so that an electrical resistivity of the pressure-sensitive conductive rubber decreases with the passage of time due to creep characteristics of rubber.SOLUTION: A reference pressure-sensitive conductive rubber 52 is provided inside a housing 51 in a manner to be pressurized. A detecting pressure-sensitive conductive rubber 53 to which an external load is applied responding to pressurization is provided inside the housing 51. A load detection circuit 50B applies voltage to the pressure-sensitive conductive rubbers 52, 53, and calculates the external load from a difference between a detection value corresponding to a current flowing along the reference pressure-sensitive conductive rubber 52 and a detection value corresponding to a current flowing along the detecting pressure-sensitive conductive rubber 53.
Bibliography:Application Number: JP20120255109