Patent ID: 9528892
Filing Date: 2016-12-27
CPC Classification: B62J,G01L

Claim Text:
1. A measuring device comprising: a first strain gauge, a second strain gauge, a third strain gauge, and a fourth strain gauge that are disposed on a side face that is a face of a crank parallel to a plane including a circle defined by rotational movement of the crank of a manpower machine; a first detection circuit, to which the first strain gauge and the second strain gauge are connected, detecting a rotating-direction strain generated in a rotating direction of the crank; a second detection circuit, to which the third strain gauge and the fourth strain gauge are connected, detecting at least one of an inward/outward strain generated in a direction perpendicular to the plane of the crank and a pulling-direction strain generated in a direction parallel to a longitudinal direction of the crank; and a control unit measuring a propulsion force of the manpower machine based on the rotating-direction strain detected in the first detection circuit, and measuring a loss force of the manpower machine based on at least one of the inward/outward strain and the pulling-direction strain detected in the second detection circuit, wherein: the first strain gauge, the second strain gage and the third strain gauge are arranged such that detection directions are parallel to the longitudinal direction of the crank, and the fourth strain gauge is arranged such that a detection direction is perpendicular to the longitudinal direction of the crank.