Renesas R8C-L3AC家用电器电能测量插入电表解决方案

Renesas公司的插入电表采用R8C/L3AC 8位MCU,能用来测量和显示家用电器的耗电量.不仅能测量每个电器的能耗,而且还能测量所消耗的电量,二氧化碳的数量和其它信息,有助降低家庭的能源浪费.本文介绍了采用R8C/L3AC的插入电表方框图和推荐使用的元器件,以及R8C/L3AC主要性能和指标,方框图, R8C/L3AC入门套件主要特性,方框图和详细电路图.

Plug-in meters can be used to easily measure and display the power consumption of electric appliances used in a household. Not only can plug-in meters measure the power consumption of each electric appliance, but they can also calculate the cost of electricity consumed, the amount of carbon dioxide, and other information. This has attracted the attention of energy and eco-conscious consumers wishing to reduce the wasteful use of power in their homes.

The power consumption of electric appliances ranges broadly from several watts to more than a thousand watts. Therefore, an A/D converter with a resolution of at least 10 bits is needed for measuring the current value that greatly influence power calculation. In addition, because plug-in meters are meant to be inserted between a commercial power supply and an electric appliance, small size and low weight are required. Furthermore, low cost is also an important factor for easing adoption by every household.
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