میخوام مقاله ای را که استخراج کردم .بررسی و اصلاح بشه جهت ارسال به ژورنال خارجی

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The built system is known as an odor detection system, which is used to identify and detect the.قسمتی از مقاله است type of target gas. As seen in figure (1), in this system, a chamber is considered for gas injection, and the two controlled parameters in this system are temperature and humidity, which are measured by two LM35 temperature sensors. [21] and the humidity sensor HIH4000 [22] have been used. Also, a heater and a humidifier are placed to change and control these two quantities. In fact, these two sensors show the exact temperature and humidity inside the chamber. If the temperature or humidity is set higher or lower for the chamber, The heater or humidifier is turned on or off respectively until the temperature or humidity reaches the desired level. Also, a fan is used for the uniformity of the air inside the chamber. The density of the desired material to be injected into the chamber has been determined in advance, which is injected as a liquid from the top of the system and then evaporates and pollutes the space. In this system, instead of an array of sensors, a virtual sensor array, which is a sensor based on tin oxide (SP3-AQ2, FIS Inc., Japan) [86], is used to detect the target gas [8]. is that the voltage applied to its micro-heater is also TSI method, which is used to monitor the environment contaminated with the target gas. The temperature-modulated gas sensor is located next to a gas-tight valve, which opens only to insert and expose the sensor to the gas. In the following sections, it will be explained about the sensor. Figure (1) shows a schematic of the constructed system.

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