公开(公告)号：US4304989A

公开(公告)日：1981-12-08

申请号：US72595

申请日：1979-09-05

申请人： H. Johannes Vos ,  James D. VanWert

发明人： H. Johannes Vos ,  James D. VanWert

IPC分类号： G04G15/00 ,  G05B19/07 ,  G06M3/02

CPC分类号： G05B19/07 ,  G04G15/006 ,  Y10T137/86461

摘要： 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.

摘要翻译： 公开了一种固态数字控制系统，用于单独定时和顺序地操作多个电气可控设备，例如用于灌溉系统的遥控阀和泵。 在一个实施例中，数字控制系统包括产生至少两个脉冲的时钟电路（10），在一天开始时产生的第一或每日脉冲以及在预选时间产生的第二或报警脉冲。 每日脉冲由第一计数器（20）计数，并且通过第二计数器（22）对报警脉冲进行计数。 多个输出（24）由连续的第一计数器（20）独立地致动，并且每当第二计数器（20）的顺序操作被选择性地由可控开关（131-144）施加到第二计数器（22）的禁止输入端 在特定的一天不需要设备。 多个输出控制电路（38）分别连接到第二计数器（22）的输出（26）并由其中的法院控制。 每个输出电路（38）可连接到被控制的装置。 还连接到输出（26）的是也响应于第二计数器（22）中的计数的控制逻辑（42）。 控制逻辑（42）又在可控延时之后通过脉冲发生器（44）来控制脉冲的产生，这对于被控制的每个设备而言可以是不同的。 脉冲发生器（44）的输出连接到第二计数器（22）的时钟输入端，从而改变其中的计数。 因此，在先前控制的设备的预选操作时间到期之后，由输出控制电路（38）控制的设备被改变。