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    • 42. 发明申请
    • System and method for data retrieval in AC power tools via an AC line cord
    • 通过交流电源线在交流电动工具中进行数据检索的系统和方法
    • US20050011655A1
    • 2005-01-20
    • US10822349
    • 2004-04-09
    • Brian CrowellDaniele Brotto
    • Brian CrowellDaniele Brotto
    • B25F5/00B25B23/14H04B3/54B21J1/00
    • H04B3/54B25B23/14B25F5/00H04B2203/5458
    • An apparatus and method for obtaining data stored in an electronic module within a power tool over a power line cord of the tool, and without any disassembly of the tool being required. An interface subsystem applies a high frequency, low power AC input signal to the power cord of the tool. A controller within the tool recognizes this signal as an indication that the tool is to be placed in a communications mode. The controller modulates a power switching device used for turning on and off the motor of the tool in such a fashion that current pulses are transmitted over the power line cord back to the interface subsystem. The current pulses correspond to tool usage/performance/identification information stored in the electronic module of the tool. This information is interpreted by a current reader circuit of the interface subsystem as binary information which is then transmitted to an external computing device for analysis and/or recording.
    • 一种用于获得存储在电动工具内的电子模块中的数据的装置和方法,该工具在工具的电源线上并且不需要拆卸工具。 接口子系统将高频,低功率AC输入信号施加到工具的电源线。 工具内的控制器将此信号识别为将工具置于通信模式的指示。 控制器调制用于打开和关闭工具电机的电源开关装置,使得电流脉冲通过电力线被传输回接口子系统。 当前脉冲对应于存储在工具的电子模块中的工具使用/性能/识别信息。 该信息由接口子系统的当前读取器电路解释为二进制信息,然后将其发送到外部计算设备用于分析和/或记录。