ABSOLUTE ANGLE ENCODER

摘要

Absolute displacement encoder (1) comprising a segmented (S1-S8) exciter element (47), a receiver element (48) and a relative moving element (49) between the exciter and the receiving element, including a part interfering in the electrical interaction between the exciter and the receiving element, the encoder further comprising an electronic signal source (2,3) connected to the exciter element (47), and an analogue signal processing circuitry (5-10) connected to the receiving element (48). The sensing means (4; 47-49) is produced as a capacitive sensor means, while the signal source (2, 3) is produced with a clock (2) triggered counter (3) such as a Johnston counter, sequentially excitating each exciter segment (S1-S8) with a exciter signal, while the receiver element comprises a receiver segment overlapping with each of the exciter segments (S1-S8) and connected to the signal processing circuitry (5-10).