초록 ▼

A system controlling apparatus wherein an array of sensors are used for detecting information and for providing signals indicative of information concerning passing articles such as presence of an article at a sensor, number of articles passing, the direction of passing and the velocity of passing.

A system controlling apparatus wherein an array of sensors are used for detecting information and for providing signals indicative of information concerning passing articles such as presence of an article at a sensor, number of articles passing, the direction of passing and the velocity of passing. Signal processing apparatus is comparing the signals with pre-determined parameter information as to the system and for providing control to the system in response to detecting equality and for providing overriding control to the system in response to detecting inequality. Each of the sensors is self-checking during the period an article is not present. The information detected by the sensors is converted to a simple binary high or low signal and such binary signals from all sensors are compared in a “look-up”table comparator arranged to recognize a particular pattern of highs and lows at its input and to provide an output to the system if it is in accordance with a pre-determined pattern corresponding to the pre-determined parameter information of the system.

대표청구항 ▼

A system controlling apparatus comprising: an array of sensors each for detecting information concerning passing articles and for providing signals indicative of the information, each of said sensors being magnetic field proximity sensors, passing articles disturbing a magnetic field, each of said s

A system controlling apparatus comprising: an array of sensors each for detecting information concerning passing articles and for providing signals indicative of the information, each of said sensors being magnetic field proximity sensors, passing articles disturbing a magnetic field, each of said sensors having two transducers spaced less than the length of each of said articles to be detected and wherein each of said transducers includes means for creating said magnetic field, and sensing means disposed within said magnetic field and responsive to changes in said magnetic field such that when said magnetic field is disturbed by the proximity of each article, the sensing means operates to provide information as to that article; field disturbing means for disturbing said magnetic field whereby to cause the sensing means to operate and provide a facility for simulating the disturbance of the field that would be caused by the proximity of each article; and signal processing means for comparing the signals with predetermined parameter information as to the system and for providing predetermined control to the system in response to detecting equality between the signals and the predetermined parameter information and for providing an overriding control to the system in response to detecting inequality between the signals and the predetermined parameter information.