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Publication date
Publication of BE527341ApublicationCriticalpatent/BE527341A/xx
G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
G01P3/42—Devices characterised by the use of electric or magnetic means
G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
G—PHYSICS
G01—MEASURING; TESTING
G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P1/00—Details of instruments
G01P1/07—Indicating devices, e.g. for remote indication
G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
G—PHYSICS
G01—MEASURING; TESTING
G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage