| 摘要 |
<p>Pedaling torque sensor device for bicycles comprising a crank arm (1) performed in a single-piece element having a cross section closed and symmetrical about a plane of symmetry (10) and also symmetric about the plane which is orthogonal to said plane (10) containing the main longitudinal axis of the crank arm (7). Said crank arm (1) is provided with at least one couple of straight drilled blind holes (5, 6) respectively symmetric about the mentioned plane of symmetry (10), and each one of the mentioned strain gauges (2) are non-detachably fixed on the inside of the crank arm (1) within 10 the straight drilled blind hole (5, 6) walls. It is also object of the invention a power meter apparatus (40) to calculate jointly and separately the instantaneous power delivered for each cyclist's leg, comprising two of the aforementioned pedaling torque sensor devices, means to measure the instantaneous angular velocity of the crankset and a power meter CPU (35) that integrates and processes the signals received.</p> |
