Registers – Platform operated – Platform actuated traffic counters
Patent
1979-09-05
1981-12-08
Thesz, Joseph M.
Registers
Platform operated
Platform actuated traffic counters
1376242, 235 92T, 235 92CC, 235 92FL, 239 63, G06M 302
Patent
active
043049893
ABSTRACT:
A solid state, digital control system is disclosed for individually timing and sequentially operating a number of electrically controllable devices such as remote control valves and pumps for irrigation systems. In one embodiment, the digital control system comprises clock circuits (10) which produce at least two pulses, a first or daily pulse produced at the beginning of a day and a second or alarm pulse produced at a preselected time. The daily pulse is counted by a first counter (20) and the alarm pulse is counted by a second counter (22). A plurality of outputs (24) are individually actuated on successive days by first counter (20) and are selectively applied by controllable switches (131-144) to an inhibit input (32) of second counter (22) whenever the sequential operation of the devices is not desired on a particular day. A plurality of output control circuits (38) are individually connected to the outputs (26) of second counter (22) and controlled by the court therein. Each of the output circuits (38) is connectable to a device to be controlled thereby. Also connected to outputs (26) is control logic (42) that is also responsive to the count in second counter (22). Control logic (42) in turn controls the generation of a pulse by a pulse generator (44) after a selectable time delay that can differ for each device being controlled. The output of a pulse generator (44) is connected to a clock input of second counter (22), thereby changing the count therein. Thus the device controlled by output control circuits (38) is changed after the preselected operation time of the previously controlled device has expired.
REFERENCES:
patent: 3440434 (1969-04-01), Yates et al.
patent: 3869854 (1975-03-01), Church
patent: 3876950 (1975-04-01), O'Connor
patent: 4014359 (1977-03-01), Sanner
patent: 4016407 (1977-04-01), Mesecar et al.
patent: 4080575 (1978-03-01), Miki
VanWert James D.
Vos H. Johannes
Dunsmuir George H.
Hinds William R.
Thesz Joseph M.
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