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创新的连接：Digi-Key气象中心智能充电器
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创新的连接：Digi-Key气象中心智能充电器
价格Digi-Key的气象中心利用最好的电子元件的测试环境中，条件变化条件大大。下面的图表描述了过程，Digi-Key的气象中心传送数据到电脑和移动设备。
本文重点介绍了智能充电器技术，利用替代能源，使电力和数据收集。和关于天气中心设计收集到的信息可以在eewiki.net，通过Digi-Key公司赞助。
设计利用替代能源，如太阳能电池板和风力涡轮机的一种密封式铅酸电池充电，智能充电器是基于ATMEL公司的AVR mega1281。这是在向Digi-Key气象中心的设计来监控和控制充电电路的输入能量的心。图1a显示了智能充电器系统及其功能的框图。图1b是安装在气象中心之前的智能充电器的图像。
Smart Charger circuits
The two alternative energy sources are connected to two separate， though similarly designed charging circuits. The charging circuits are based on the Texas Instruments‘ BQ24450， a linear-designed regulator which monitors the battery voltage with a voltage divider circuit. In conjunction with the charging IC， some additions to the solar charging circuit （Figure 2） have been made， including the Zetex ZXCT1010 to measure the current through a sense resistor， and a series of resistors arranged in a voltage divider configuration. These two modifications allow the controller to measure the input voltage and current from the solar panels. Secondly， five IPS6031 high side switches from International Rectifier were added to allow the controller to connect or disconnect various inputs in and out of the circuit for a couple of different reasons. The first reason is to control the solar inputs individually in order to get maximum solar power， and the second reason is to allow testing of each solar panel individually for maximum life and performance. Lastly， five Ultra capacitors from NESSCAP were added to the input of the circuit to allow intermittent solar inputs to have a minimal effect on the charging of the battery.
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