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    • 21. 发明授权
    • Electronic temperature control system
    • 电子温度控制系统
    • US4276925A
    • 1981-07-07
    • US77105
    • 1979-09-19
    • Joseph M. Palmieri
    • Joseph M. Palmieri
    • G05D23/20F25B29/00
    • G05D23/20G05D23/1902
    • A digital computerized temperature control system maintains ambient temperatures at preselected levels respectively at a plurality of remote locations, each of which may be provided with a digitally operated electronic thermostat of the type described in U.S. Pat. No. 3,942,718. The system includes a real time clock, a keyboard data-entry unit, serial data controllers for sequentially polling each of the thermostats and producing polled temperature data, including a first memory for storing the data corresponding to the desired temperature limits for each thermostat location and a second memory for storing the polled temperature data. A comparator compares the polled temperature data with the desired ambient temperature limit data and accordingly produces overlimit, underlimit and equal limit counts which are stored in another memory. A central processor unit selectively produces heating, cooling, and no-operation signals in accordance with the overlimit, underlimit and equal limit counts.
    • 数字计算机化温度控制系统分别在多个远程位置处将预定电平的环境温度维持在每个远程位置,每个远程位置可以设置有美国专利No. 第3,942,718号。 该系统包括实时时钟,键盘数据输入单元,用于顺序地轮询每个恒温器并产生轮询温度数据的串行数据控制器,包括用于存储对应于每个恒温器位置的期望温度限值的数据的第一存储器,以及 用于存储轮询温度数据的第二存储器。 比较器将轮询的温度数据与期望的环境温度限制数据进行比较,并因此产生存储在另一个存储器中的超限,下限和相等的限制计数。 中央处理器单元根据上限,下限和相等的极限数量选择性地产生加热,冷却和无操作信号。
    • 28. 发明授权
    • Ground fault apparatus and protection system
    • 接地故障装置及保护系统
    • US4233640A
    • 1980-11-11
    • US24229
    • 1979-03-26
    • Keith W. KleinJoseph M. PalmieriGregory C. Eckart
    • Keith W. KleinJoseph M. PalmieriGregory C. Eckart
    • H02H3/347
    • H02H3/347
    • A unique ground fault circuit interrupting (GFCI) device is utilized to control either an industrial circuit breaker or a contactor in protecting a large power distribution circuit against ground faults. The GFCI device is equipped with plural sets of switch contacts which are actuated incident with tripping of the GFCI device. The particular switch contacts are selected to control energization of an actuator adapted to the circuit breaker or contactor, depending on the actuator type. A ground fault sensor responds to ground faults on the distribution circuit by injecting a current imbalancing signal into the GFCI device, causing it to trip. The consequent switch contact actuation initiates operation of the circuit breaker or contactor to interrupt the distribution circuit.
    • 使用独特的接地故障电路中断(GFCI)装置来控制工业断路器或接触器,以保护大型配电电路免受接地故障。 GFCI装置配备有多组开关触点,这些开关触点与GFCI装置的跳闸一起启动。 选择特定的开关触点以根据致动器类型来控制适于断路器或接触器的致动器的通电。 接地故障传感器通过向GFCI设备注入电流不平衡信号,使其跳闸,从而对配电电路的接地故障作出响应。 随后的开关触点致动启动断路器或接触器的操作以中断配电电路。