Measuring device for recording angle of rotation (revolution), direction (sense) of rotation and torque

摘要

According to the invention, a measuring device (10) for recording angle of rotation, direction of rotation and torque of a metering shaft (spindle) (16) integrated in the measuring device (10) is proposed which has an electronic circuit. A strain gauge measuring bridge (24) is mounted on the metering shaft (16) for the purpose of measuring torque. The purpose of incremental measurement of angle of rotation and direction of rotation is served by a pulse disc (64) which is connected to the metering shaft (16) and rotates therewith, and a phase disc (66), which is fixed to the housing and [lacuna] by a two-track optronic device formed from light-emitting diodes (86) and phototransistors (88). After being mounted in their concentric alignment relative to one another and to the metering shaft (16), the pulse disc (64) and the phase disc (66) are fixed on a bearing (42) without the need for further adjustment. The circuit according to the invention is subdivided into a rotatable part (36, 38), connected to the metering shaft (16), and a stationary part (80), fixed to the housing. A calibration system is provided in the rotatable circuit part and acts as a shunt circuit relative to the strain gauge measuring bridge (24) at the input of the measuring system. The signal of said calibration system traverses all the function stages under completely identical conditions as for the actual measurement signal from the strain gauge measuring bridge (24). The rotatable circuit part is linked to the stationary circuit part by means of inductive ring transformers (44, 46, 48). <IMAGE>