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    • 9. 发明公开
    • Thermal recorder for use with battery-powered equipment
    • 热敏电极Aufzeichnungsgerätzur Verwednung在batteriebetriebenenAusrüstungen
    • EP1097820A1
    • 2001-05-09
    • EP00309790.4
    • 2000-11-03
    • GE Medical Systems Information Technologies, Inc.
    • Roeber, Russel RoyGray, James Michael
    • B41J2/37
    • B41J2/37
    • A method and an apparatus for limiting the peak power consumed by a thermal recorder (44) connected to portable battery-powered equipment. The battery-powered equipment is designed with a filter (58) and an electronic circuit breaker (56). A circuit breaker current sense resistor (60) and an output capacitor (62) form an RC filter and provide a large current reservoir for the thermal recorder which averages the peak current demands seen at the circuit input. The electronic circuit breaker provides a current limit function and will not allow a current greater than a predetermined amperage level to be drawn. The thermal recorder has a CPU which provides pulses to a thermal print head in dependence on data incorporated in a pulse-width limit table. The values in the pulse-width limit table can be substituted for calculated pulse widths that would produce peak currents large enough to trip the circuit breaker.
    • 一种用于限制连接到便携式电池供电设备的热记录器(44)消耗的峰值功率的方法和装置。 电池供电的设备设计有过滤器(58)和电子断路器(56)。 断路器电流检测电阻器(60)和输出电容器(62)形成RC滤波器并且为热记录器提供大的电流存储器,其对电路输入端所看到的峰值电流需求进行平均。 电子断路器提供电流限制功能,并且不允许绘制大于预定电流强度的电流。 热记录器具有CPU,其根据包含在脉冲宽度限制表中的数据向热打印头提供脉冲。 脉冲宽度限制表中的值可以代替计算出的脉冲宽度,产生足够大的峰值电流使断路器跳闸。