![]() ![]() Gas sensor is installed in order to detect the presence of gas in its vicinity. ![]() The simulation model of the LDR is installed in the Proteus by default you do not need to download any other file in order to use this sensor. The LDR sensor in the Proteus looks like in the following image. Just like the flex sensor the light dependent resistor is also used in the voltage divider configuration, the resistance of the LDR sensor alters as the intensity of light projected on the sensor varies. The LDR sensor is the abbreviation of the Light Dependent Resistor and as the name implies the resistance of this sensor varies in relation to the intensity of light, greater the intensity of light lower will be resistance of the LDR sensor. The PIR sensorin the Proteus looks like in the following image:You can download the simulation model of the PIR sensor from the following link. So when the object comes in its field of view the readings of the sensor gets disturbed and thus detect the presence the object in front of it. PIR (Passive Infrared) sensor is also commonly known as the motion sensor which measures the Infrared (IR) light radiating from the object in its field of view. ![]() You can download the simulation model of the flame sensor from the following link. The flame sensor in Proteus looks like in the following image. The fire sensor also consists of the operational amplifier which conditions the measured signal so that microcontroller can easily read the signals and successfully process the signals. The fire sensor detects the presence of the fire by detecting the IR (Infrared Radiation) waves present in the fire. The flame sensor also known as the flame detector is a type of sensor that senses the presence of the fire in its vicinity.
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