This study assesses the feasibility of using a passive acoustic sensor to detect gas consumption events in domestic combination gas-fired boilers (C-GFBs).
The investigation has shown, for the C-GFB investigated, the following events are discernible using a passive acoustic sensor: demand type (hot water or central heating); boiler ignition time; and pre-mix fan motor speed.
Standard headlights barely cover the length of a football field, so that at 85kph, the most distant point visible is less than six seconds away.Night-vision lets the driver see up to five times as far, using a passive infra-red sensor.
A 128-channel indium arsenide (InAs) photodiode sensor is installed in the spectrometric unit and cooled at 193 K (−80 °C) using a passive radiator.
As we noted in the introduction, many mammal species use their whiskers to actively palpate an object, while in other species the whisker has a fixed direction and functions as a passive sensor.
This is a passive sensor, with an 1x1 cardinality.
The Phase IV Cattle Temperature Monitoring System (CTMS; Phase IV Engineering Inc., Boulder, CO) marketed by MaGiiX (MaGiiX Inc., Post Falls, ID) uses a passive bolus equipped with a temperature sensor, a panel reader placed at a parlor entrance or exit to query the bolus, and a software package to collect, analyze, and view data.
In this paper, we introduce a novel passive wake-up radio device named WISP-Mote that uses a passive RFID tag as a wake-up receiver for a traditional sensor node.
First, the study used a passive control group.
Do not use a passive voice.
