COMPRESSED-AIR SUPPLY CONTROL DEVICE HAVING AIR LEAKAGE DETECTING FUNCTION, AND PNEUMATIC MASSAGING SYSTEM WITH THE COMPRESSED-AIR SUPPLY CONTROL DEVICE

摘要

#$%^&*AU2014271231B220161020.pdf#####ABSTRACT The invention provides a compressed-air supply control device that can reliably detect an air leakage. In a compressed-air supply control device 2 to which an enclosed air chamber 4 is connected and which supplies a compressed air to the air chamber 4, there are provided: a control circuit 11 that controls drive electric power to be supplied to an air pump 8; and a pressure sensor 20 that measures a pressure in the air supply path for supplying the compressed air generated by the air pump 8 to the air chamber 4, and transmits a pressure signal which indicates a magnitude of the measured pressure to the control circuit 11. The control circuit 11 controls the drive electric power to be supplied to the air pump 8, based on a difference between the measured pressure indicated by the pressure signal and a set pressure that has been set in advance, so that the pressure in the air supply path becomes the set pressure. Also, the control circuit 11 determines that an air leakage has occurred when the drive electric power does not become equal to or smaller than a predetermined abnormality-determination threshold value until the air leakage determination period has elapsed after the measured pressure has reached the set pressure.FIG.1 2 Yl 5 FIG. 2 2 20 19 18 14 16 7 CC @ -10 11 12 22 9 6 1/9