Smoke sensor circuit diagram

A Brief Introduction to Smoke . This electronic mini project helps for engineering students. Demonstration video for smoke detector alarm circuit. Figure Connection diagram for MQsensor.

Smoke detector alarm circuit diagram.

For the purpose of design of the smoke detector circuit for this project, the MQsensor was chosen due to the .

However, this circuit does not have to be so complicated.

The sensor is one of the MQ series. Pin Aas shown on the pictures. Once you have the circuit in place, upload the attached code onto the Arduino and open the serial monitor of the IDE. Great work by Arnav, Aishwarya, Prasant.

By using this circuit you can detect smoke and it alarms when the air is contaminated. In addition, a 4-wire smoke detector circuit also needs an end-of-line relay, for power supervision. A smoke detector wiring diagram is normally included with every detector, and will show you how to correctly hook up the device.

D(IR. RX) and an OPA which is contained within the HT45F23A comprise an infrared receiver circuit. Normally, when there is no smoke about, the light beam from the LED does not reach the detector.

An electronic circuit (4), monitoring the photocell, detects that all is well and . The circuit is built on Arduino Pro Mini. The MQ-gas sensor, LCD display, buzzer and L293D motor driver IC are interfaced with the Arduino board. Discover (and save!) your own Pins on Pinterest.

When there is sufficient smoke to mask the light from falling on LDR, the LDR resistance increases and so do the voltage across it. POT Rcan be used to adjust the sensitivity of the alarm. Circuit diagram with Parts list.

This device detects smoke or dust particles in the air. Its circuit diagram is shown in figure 1. The smoke sensor contains of LED VDand photodiode VD working in the infrared frequency of the electromagnetic spectrum. The infrared light from LED VDgoes through the gap . Sumit Aggarwal, Senior Faculty ECAD CADD Centre Dwarka Con.

BC5NPN is used for the buzzer or alarm trigger.