Machine operating condition monitoring system

Details Machine operating condition monitoring system Machine operating condition monitoring system

1976-09-23

1977-10-18

Yusko, Donald J.

Communications: electrical

Digital comparator systems

340408, 340413, H04Q 900, G08B 2500

Patent

active

RE0294500

ABSTRACT:
This invention relates to a system for monitoring the condition and operation of remotely located machines, such as coin-operated vending machines. In one embodiment, switches in each machine convert operating conditions into a binary digital word for that machine, which is stored temporarily. Such words for a plurality of machines are then transferred to a memory, whence they are retrieved, coded as to machine number and transmitted via telephone line to a control processing unit where the various machine conditions are recorded and displayed.

REFERENCES:
patent: 3532827 (1970-10-01), Ewin
patent: 3676876 (1972-07-01), Linder
patent: 3744043 (1973-07-01), Walden
patent: 3820074 (1974-06-01), Toman
patent: 3851310 (1974-11-01), Taylor
patent: 3906450 (1975-09-01), Prado, Jr.

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