Title:
DIGITAL PRESSURE SETTING METHOD
Document Type and Number:
Japanese Patent JPS56114016
Kind Code:
A
Abstract:
PURPOSE:To realize an automatic control of the air pressure, by giving a digital indication to the desired air pressure and switching the solenoid valve. CONSTITUTION:The air supplied from the primary air source 8 is supplied to the air device via the solenoid valve 7, the pressure gauge 4 and the tank 2. When the pressure sensor detects the pressure of the secondary side, the output of detection is amplified and then sent to an A/D converter. Then the signal converted into a digital form plus the signal equivalent to the pressure set previously at the digital switch are supplied to an arithmetic device for a comparison of levels. Then the valve 7 is switched to secure zero for the difference between the both signals. In such way, the air pressure can be controlled automatically just by indicating the air pressure in a digital form.
Inventors:
BANDOU HIDEAKI
Application Number:
JP1556480A
Publication Date:
September 08, 1981
Filing Date:
February 13, 1980
Export Citation:
Assignee:
AIDA ENG LTD
International Classes:
F15B11/028; G05D16/20; (IPC1-7): F15B11/02
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