台灣有將近六成的土地被森林覆蓋且孕育著豐富而高價值的樹種，截至目前仍無有效的 方法來管理這些森林，僅能仰賴耗時的傳統人力進行巡山。隨著時代變遷，可藉由無線傳輸 以及自動化管理來取代傳統人力巡檢，以降低人力耗損及提高效率。雖然市面上已有許多自 動化無線傳輸方式，但是電源供給仍是關鍵，倘若採用一般的能源裝置 (如太陽能、風力發 電、乾電池)則會在森林中埋入太多人工裝置，影響大自然環境，且會增加後期維運成本、提 高管理困難度。
基於以上觀點，本研究係利用植物本身行光合作用所產生的多餘養分排放至土壤，土壤
內微生物分解這些養分產生微小電荷，形成植物發電的現象。若能將這些電荷收集再利用，建構一自給自足電源供給來源，並利用此能源設計一套低耗能且遠距離傳輸的無線裝置，則可達到森林自動化管理的目的。
本研究中長期監測植物發電的電壓曲線，掌握植物發電的特性，並設計充電電路，捕捉 植物產生的微小電荷 (約 0.7 v ~0.8 v) 後再加利用，成功驅動 LoRa 無線模組完成設備之間的 溝通，且傳輸距離可達 5 公里遠。從本研究結果顯示，驗證植物發電實現 IoT 應用發展的可 能性。

Nearly 60% of Taiwan's land is covered by forests, which are rich in high-value tree species. Up to now, there is still no effective way to manage these forests by only relying on traditional manpower for patrol. With the advances of Internet of Things (IoTs), it is possible to replace traditional human inspections by sensors and wireless transmission to automate effective forest management. Although there are many automated wireless transmission methods on the market, the power supply is still the key. If general energy devices (such as solar energy, wind power, batteries) were used, too many artificial devices will be implemented in the forest, leading to an unfavorable natural environment. In addition, the cost of maintenance and operation in the later stage are also undesirable. Thus, the possibility of using plant electricity from photosynthesis is explored in this study.
The plants discharge nutrients to the soil which are then decomposed by the microbes in the soil to generate small electricity. In this study, these charges are collected by super capacitors to provide power for signal transmission through the wireless communication module LoRa. With a low power consumption design, the distance transmitted can be up to 4 km. That is, the possibility of using plant power for forest management through proper communication links of IoTs is verified and successfully implemented and demonstrated in this study. Thus, the goal of forest management automation could be accomplished.

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