| 摘要 |
PROBLEM TO BE SOLVED: To provide a human weight sensing system using a bag for sensing pressure which is filled with air and automatically supplying air. SOLUTION: This human weight sensing system is provided with a bag 2 for sensing pressure which is so arranged that a load applied to a seat is transferred to the inside of the seat and filled with air, and a pressure sensor 42 for measuring air pressure in the bag 2. The bag 2 and the pressure sensor 42 are linked by using a pipe 3. An output of the pressure sensor 42 is processed, and the weight of a man sitting on the seat is judged on the basis of previously detected correlation between pressure and weight. A compressor 44 and a solenoid valve 45 are attached on the pipe 3. The compressor 44 and the solenoid valve 45 are controlled by using an output of the pressure sensor 42 when air pressure in the bag 2 deviates from a specified range, and the quantity of air in the bag 2 is automatically adjusted.
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