SENSOR ARRANGEMENT FOR MONITORING PHYSICAL ACTIVITY

摘要

A sensor arrangement for monitoring physical activity associated with a living being, comprising a flexible board (70) to which is fitted a transducer (80) for converting a distortion of the board into an electrical signal. The board comprises discontinuities (94) which enable parts of the board to distort somewhat independently of other parts of the board. The living being lies or sits on a cushion or mattress (30) under which is located the board. The signal from the transducer (80) is passed onto circuitry (50) which can detect the presence of the physical activity, which may be heartbeat, breathing or limb movement. The discontinuities can be plurality of slots formed in the board, a plurality of grooves formed in the board or a plurality of ribs formed in the board.