A printed circuit board assembly for a rotary signal transmitter for use in a system for transmitting measurement data from a rotating body.

摘要

In the transmission of measurement data from a rotating body to a stationary receiver (11) a rotary signal transmitter mounted on a rotating shaft (16) employs a printed circuit. The problem arises of preserving the electronic components mounted on the printed circuit and their connections from damage due to centrifugal force. Also there is the problem of providing a rotationally balanced arrangement. A printed circuit board assembly (150) for such a rotary transmitter has a plurality of evenly circumferentially distributed printed circuit boards with their electronic components facing radially inwardly so as to resist damage due to centrifugal force. Connecting wires 19 connect the assembly (150) to a temperature sensor and the signal corresponding to the temperature is transmitted via a light-emitting element (7) to a light-sensitive element (12) of the receiver. Another arrangement employs rotationally balanced printed circuit discs extending radially. Multiplexing means may also be provided.