Choi Jonghyun, Visagie Ian, Chen Yi, Abbel Robert, Parker Kate
The New Zealand Institute for Plant and Food Research Ltd., Private Bag 3230, Waikato Mail Centre, Hamilton 3240, New Zealand.
Scion, New Zealand Forest Research Institute Ltd., Tītokorangi Drive, Private Bag 3020, Rotorua 3046, New Zealand.
Sensors (Basel). 2023 Jul 28;23(15):6765. doi: 10.3390/s23156765.
Wireless sensor tags in flexible formats have numerous applications; some are commercially available for specific target applications. However, most of these wireless sensor tags have been used for single-sensing applications. In this study, we designed a printed circuit board (PCB) module (13 mm × 13 mm) for near-field communication-enabled sensor tags with both electrical resistance and capacitance read-out channels that enables dual-channel sensing. As part of the wireless sensor tag, a square antenna pattern was printed directly on a flexible poly(ethylene terephthalate) (PET) substrate and integrated into the PCB module to demonstrate a dual-channel temperature and ethylene gas sensor. The temperature and ethylene sensors were printed using a positive temperature coefficient ink and a tin oxide (SnO) nanoparticle ink, respectively. With dual sensing capabilities, this type of sensor tag can be used in smart packaging for the quality monitoring of fresh produce (e.g., bananas) by tracking temperature and ethylene concentration in the storage/transport environment.
柔性格式的无线传感器标签有众多应用；有些已商业化用于特定目标应用。然而，这些无线传感器标签大多用于单传感应用。在本研究中，我们设计了一种印刷电路板（PCB）模块（13毫米×13毫米），用于具有电阻和电容读出通道的近场通信传感器标签，实现双通道传感。作为无线传感器标签的一部分，方形天线图案直接印刷在柔性聚对苯二甲酸乙二酯（PET）基板上，并集成到PCB模块中，以展示双通道温度和乙烯气体传感器。温度传感器和乙烯传感器分别使用正温度系数油墨和氧化锡（SnO）纳米颗粒油墨印刷。凭借双重传感能力，这种类型的传感器标签可用于智能包装，通过跟踪储存/运输环境中的温度和乙烯浓度来监测新鲜农产品（如香蕉）的质量。
