| 摘要 |
PROBLEM TO BE SOLVED: To provide the inexpensive and strong biological activity measurement device of simple constitution for hardly picking up noise in the biological activity measurement device 100 for detecting pressure change inside an air mat 110 and measuring biological activities such as a heart rate and a respiration rate. SOLUTION: This device is provided with a conversion means 120 for converting the pressure change to the flow velocity change of air, a flow velocity change detection means 130 for detecting the flow velocity change and outputting it as an electric signal and a signal processing part 140 for processing the electric signal outputted from the flow velocity change detection means and measuring the biological activity. The conversion means is provided with a hole 121 provided on the air mat, a pipe 122 for guiding the air going in and out from the hole and an air tank 123 communicated with the air mat by the pipe. The flow velocity change detection means is provided with a thermister 131 provided in the inside or on the exit of the pipe. |
