These calculations might be based on visibility (whether the tag is in the sensor's line of sight), the signal strength, or the amount of time it takes the signal to travel from the tag to the sensor.
这些计算可能基于可见性(标签是否位于传感器的视线中)、信号强度或者信号从标签发送到传感器的时间量。
For example, a "thing" can be a wireless blood pressure monitor, a sensor on an assembly line or an RFID tag on a piece of clothing in a store.
这个“事物”可以是无线血压监测仪、传感器、生产流水线，或是商店里衣服上的射频识别标签。
A color recognition sensor which suited on-line color detection was introduced.
介绍一种适用于工业在线检测的颜色识别传感器。
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