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Wireless sensor networks (WSNs) refer to networks of spatially dispersed and dedicated sensors that monitor and record the physical conditions of the environment and forward the collected data to a central location. WSNs can measure environmental conditions such as temperature, sound, pollution levels, humidity and wind.
Subsea acoustics are efficient at long-range of up to 20 kilometers (12 miles) [10] and have relatively low power consumption for their range. [13] Acoustic communication systems generally perform poorly in shallow water and complex environments and has a limited bandwidth. [10] Subsea optical has an ultra-high bandwidth and a very short range ...
Most are used to monitor temperature conditions, and some versions can also measure the relative humidity. Data loggers are often small enough to be placed inside an insulated shipping container or directly attached to a product inside a refrigerator truck or a refrigerated container. These monitor the temperature of the product being shipped.
Low-power long-range technologies are generally not truly bi-directional, as the regular scanning duty is pretty high. In this context, DASH7 is a very good compromise between range, power consumption, and bi-directionality and is very suitable for industrial applications with effective range of 100 to 500 m.
Distributed temperature sensing systems (DTS) are optoelectronic devices which measure temperatures by means of optical fibres functioning as linear sensors. Temperatures are recorded along the optical sensor cable, thus not at points, but as a continuous profile.
Instant-read thermometers offer quick, reliable results, while leave-in probes allow you to monitor temperature continuously without disrupting the cooking process.
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