MULTIPLEXING FUNCTIONALITIES IN A SINGLE CHANNEL OF A MICROCONTROLLER
    10.
    发明申请
    MULTIPLEXING FUNCTIONALITIES IN A SINGLE CHANNEL OF A MICROCONTROLLER 审中-公开
    微通道单通道中的多功能功能

    公开(公告)号:WO2008156567A1

    公开(公告)日:2008-12-24

    申请号:PCT/US2008/007150

    申请日:2008-06-06

    CPC classification number: G05B19/0423 B25F5/00 G05B2219/37428

    Abstract: A control system for use with a cordless power tool having a trigger switch includes a microcontroller having an analog I/O pin and a pin I/O driver driving the pin to high output and low output, and setting the pin to high impedance input. A temperature sensor connected to the analog I/O pin is comprised of a voltage divider circuit and a thermistor disposed proximate to a heat source to be measured. A control module of the microcontroller measures and records temperature of the heat source by first setting the analog I/O pin high, waiting a predetermined amount of time for a capacitor of the voltage divider circuit to discharge, setting the analog I/O pin to high impedance input, taking the temperature reading, and storing the temperature reading in a computer readable medium.

    Abstract translation: 用于具有触发开关的无绳电动工具的控制系统包括具有模拟I / O引脚和引脚I / O驱动器的微控制器,该引脚将引脚驱动为高输出和低输出,并将引脚设置为高阻抗输入。 连接到模拟I / O引脚的温度传感器由分压电路和靠近待测热源设置的热敏电阻组成。 微控制器通过首先将模拟量I / O引脚设置为高电平来测量和记录热源的温度,等待预分配的时间使分压器电路的电容放电,将模拟量I / O引脚设置为 高阻抗输入,采取温度读数,并将温度读数存储在计算机可读介质中。

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