工業自動化應用中數據傳輸的能量采集

　　本文著眼于工業自動化網絡中數據傳輸系統的能量收集的詳細要求，將太陽能和熱能系統連接到低功率節點，以及不同協議對能量收集供應的影響。

　　它涵蓋了CAN和LIN協議，與LIN收發器芯片mcp202家族和NXP tja1015能設備，以及EnOcean edk312c，Cymbet CBC-EVAL-09熱能量收集開發包。它也涵蓋了德克薩斯儀器bq25504電源管理器件提供從能量采集源的收發器的權。

　　工業網絡收發器的電壓下降和功耗正在將能量收集帶到有線設備上。現在，使用CAN和LIN工業協議的網絡可以利用能量收集技術在工廠樓層傳輸數據。這可能是為了降低能源成本或提供網絡節點而無需安裝新的電源線，因為這些網絡協議不支持與以太網供電（POE）相同的自供電方式。

　　Using energy harvesting with older generation devices has not been possible， and the 5 V and higher voltages， means the power consumption has been too high. As both CAN and LIN come from the automotive heritage， the original designs support voltages as high as 12 V， but the new process technologies are now driving the transceivers to 3.3 V and below. This heritage means that the protocols are robust and resistant to interference， and the devices are qualified for industrial temperatures.

　　However， this still means the energy harvesting system requires power management and some storage to take the input captured from thermal， vibrational or solar energy， and provide a high enough power output for the network node.

　　The different network protocols provide a range of advantages， from the low cost of LIN to the more flexible CAN.