Sensitivity switching / failure detection device and method of vacuum sensor pressure sensor

摘要

The present invention relates to a pressure sensor control ring / failure detection device and method of a vacuum cleaner, conventionally does not consider the user's pattern, such as the pressing force of the nozzle of the user using the vacuum cleaner or the cleaning surface and the angle of the nozzle does not consider the optimal suction force If there is a malfunction in the control and the failure of the pressure sensor is not detected, there is a significant problem in the optimum suction force control due to the fixing of the pressure sensor. Therefore, in the present invention, the failure of the pressure sensor detects the voltage level applied to the input port of the microcomputer at the initial power-on and checks whether the failure occurs, and the sensitivity switching of the pressure sensor is performed by a time constant using a sensitivity switching switch and a capacitor. By adjusting the suction power to the pressure sensor with the delay time, the power consumption can be reduced as much as possible.