Patent ID: 6386051
Filing Date: 2002-05-14
Classification: A61B,G01G,G01L

Abstract:
A load detection sensor unit for a bedding comprising:a sheet made of a film material; a plurality of detection devices arranged on the sheet as a part of the bedding for producing output signals variable with respective loads applied thereto by a sleeper, the detection devices each having output signal lines for transmitting the output signals; switches for turning on and off transmission of the output signals of the detection devices, the switches being mounted on the sheet and connected to the output signal lines of the respective detection devices; a signal processing circuit for controlling the switches so as to serialize the output signals of the detection devices, the signal processing circuit being mounted on the sheet and connected to the switches; an electrical unit disposed outside the bedding for detecting the respective loads applied to the bedding from the output signals produced by the detection devices; and a single signal line connecting the signal processing circuit to the electrical unit, wherein a serialized output signal of the output signals of the detection devices is transmitted to the electrical unit through the single signal line.