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標題: A+Design+on+the+Dimmable+Circuit+and+the+Control+of+Illuminating+Intensity+Simulation+in+an+Impedance+Measurement+Platform+for+Botanical+Tissue
作者: Xu, Meng-Yi
Wu, Guan-De
Chen, Tse-Min
關鍵字: Dimmer circuit;調光電路;Illumination simulation;Fluorescent lamp;Non-invasive,Botanical impedance measurement;日照模擬;日光燈;非侵入式;植物阻抗量測
出版社: 臺中巿: 國立中興大學農學院
Project: 農林學報, Volume 61, Issue 4, Page(s) 383-398.
This research establishes illumination simulation system for the non-invasive botanical impedance measurement platform. A developed dimmable circuit and the rearrangement of fluorescent trigger circuit in the platform linked together consist of this illumination simulation system. Integrating with the control on temperature and humidity, the expected environmental conditions including the sunshine illumination, temperature and humidity for botanic physiology measurement can be implemented. Many literatures confirm that various wavelengths of light will resulted in different responses on the physiology of a plant. The products from photosynthesis processes in a plant vary with segments of light spectrum absorbed. Therefore, a sturdy plant must grow with full spectrum of illumination. Since the popular and energy-saving illumination source-LED is with single specific wavelength and is unable to satisfy the full spectrum requirement for the photosynthesis processes, this approach chooses dimming fluorescent light source as illumination device. For illumination simulation, the illumination values in a greenhouse are the specification of the developed system. For realization, the dimming light circuit adjusts the amplitude, the angle, and the frequency etc. as illumination control. In this research it is verified that the dominant factor for illumination control is the load power, thus the dimming light system developed will be accomplished by implementing the amplitude adjustment. A solar panel was installed in the platform and used as the sensor of illumination feedback control. In addition, a friendly interface developed by LabVIEW programming is employed with the hardware NI PXI system and the PCB layout board of the developed integrating circuit to facilitate and accomplish the non-invasive impedance measurement system with illumination, temperature and humidity control.

Appears in Collections:第61卷 第04期

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