会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明申请
    • CLOCK LINE OVER-CURRENT PROTECTOR AND INDUSTRIAL CONTROL SYSTEM
    • 时钟线过流保护器及工业控制系统
    • WO99032948A1
    • 1999-07-01
    • PCT/US1998/027224
    • 1998-12-22
    • H02H3/08G05B19/042H02H7/00H02H7/20
    • G05B19/0425G05B2219/21148G05B2219/21154H02H7/005Y02B70/3241Y04S20/227
    • A clock line over-protection circuit (28) carried on an interface card (16) for interfacing synchronous clock line (20), power line (22), DC common line (24) and data line (26) between a host computer (12) and a plurality of data link modules (14) with a plurality of associated controlled devices (18) including a series resistor (50) interconnected between a clock disable switch (52) and a clock signal generating amplifier (48) and a current sensor circuit (64, Fig. 3) connected across the series resistor (50) to produce a current sensor signal on an output (62). The current sensor signal is integrated by an over-current protection circuit (58, Fig. 4) to produce an over-current detection signal that varies with the difference in the clock line current magnitude during clock signal phases of opposite polarity. A clock switch control circuit (54) actuates the clock disable switch (52) to turn off and to protectively disconnect the clock line (20) and the data link modules (14) coupled therewith from the clock signal generating amplifier (48).
    • 一个在接口卡(16)上承载的时钟线过电流保护电路(28),用于在主计算机之间连接同步时钟线(20),电力线(22),直流公共线(24)和数据线(26) 12)和具有多个相关联的受控设备(18)的多个数据链路模块(14),包括在时钟禁止开关(52)和时钟信号发生放大器(48)之间互连的串联电阻器(50)和电流 连接在串联电阻器(50)两端的传感器电路(64,图3),以在输出端上产生电流传感器信号。 电流传感器信号由过电流保护电路(图4中的58)集成,以产生随着相反极性的时钟信号相位期间的时钟线电流幅度的差异而变化的过电流检测信号。 时钟切换控制电路(54)致动时钟禁止开关(52)以关断并且保护性地从时钟信号产生放大器(48)断开时钟线(20)和与其耦合的数据链路模块(14)。