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lpg gas leakage detection alarm full report
In this article we will be discussing about a home security alarm circuit. This is a LPG gas leakage sensor circuit that detects the outflow of LPG gas and alerts the user via audio and visual indications. The heart of this simple engineering project is a gas sensor module SEN 1327. QM 6 gas sensor is used in this SEN 1327 module. The output signal from this gas sensor module is used to drive a 555 timer astable multivibrator. Here 555 timer works as a tone generator, the frequency of tone can be altered by varying the preset VR1.
Components Required
Resistors (22 , 4.7k , 10k , 1k , 56 )
Preset (VR1=10k )
Zener diode (5V)
Capacitors (100nF x 2)
Gas sensor module SEN 1327
555 timer IC
Transistor (SL 100)
Loudspeaker (8 , 0.5W)
LED
Working of gas leakage alarm
Zener diode Z1 is used to regulate the Vcc to 5V DC to drive the gas sensor module. See Voltage regulator using zener diode.
The sen-1327 gas sensor module from Rhydolabz is used in this circuit. Its output goes high when the gas level exceeds definite point.
A preset employed in the module is used to set the threshold or reference level. Interfacing with the SEN 1327 sensor module is done through a 4 pin SIP header.
A MQ-6 gas sensor is used in the module. As per its datasheet, it has high sensitivity to propane, butane, isobutene, LPG and natural gas.
Each time there is LPG concentration of 1000 ppm (parts per million) in the area, the OUTPUT pin of the sensor module goes high.
High voltage at the 4th pin (Reset pin) enables timer IC 555, which is wired as an astable multivibrator. The multivibrator essentially works as a tone originator.
Without the high voltage at 4th pin (Reset pin) the IC remain in the Reset state.
Output pin 3 of IC 555 is connected to LED1 and speaker driver transistor SL100. LED1 glows and the alarm sounds to aware the user of gas leakage.
The pitch of the tone can be changed by varying preset VR1.
Provide a suitable heat sink for transistor SL100.
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A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. This type of equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down. A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave. This type of device is important because there are many gases that can be harmful to organic life, such as humans or animals.
Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion. This type of device is used widely in industry and can be found in locations, such as on oil rigs, to monitor manufacture processes and emerging technologies such as photovoltaic. They may be used in firefighting.
Gas leak detection is the process of identifying potentially hazardous gas leaks by sensors. These sensors usually employ an audible alarm to alert people when a dangerous gas has been detected. Common sensors include infrared point sensors, ultrasonic sensors, electrochemical gas sensors, and semiconductor sensors. More recently, infrared imaging sensors have come into use. All of these sensors are used for a wide range of applications and can be found in industrial plants, refineries, waste-water treatment facilities, vehicles, and homes.
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lpg gas leakage detection alarm full report
Working of gas leakage alarm
Zener diode Z1 is used to regulate the Vcc to 5V DC to drive the gas sensor module. See Voltage regulator using zener diode.
The sen-1327 gas sensor module from Rhydolabz is used in this circuit. Its output goes high when the gas level exceeds definite point.
A preset employed in the module is used to set the threshold or reference level. Interfacing with the SEN 1327 sensor module is done through a 4 pin SIP header.
A MQ-6 gas sensor is used in the module. As per its datasheet, it has high sensitivity to propane, butane, isobutene, LPG and natural gas.
Each time there is LPG concentration of 1000 ppm (parts per million) in the area, the OUTPUT pin of the sensor module goes high.
High voltage at the 4th pin (Reset pin) enables timer IC 555, which is wired as an astable multivibrator. The multivibrator essentially works as a tone originator.
Without the high voltage at 4th pin (Reset pin) the IC remain in the Reset state.
Output pin 3 of IC 555 is connected to LED1 and speaker driver transistor SL100. LED1 glows and the alarm sounds to aware the user of gas leakage.
The pitch of the tone can be changed by varying preset VR1.
Provide a suitable heat sink for transistor SL100.
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lpg gas leakage detection alarm full report
Working of gas leakage alarm
Zener diode Z1 is used to regulate the Vcc to 5V DC to drive the gas sensor module. See Voltage regulator using zener diode.The sen-1327 gas sensor module from Rhydolabz is used in this circuit. Its output goes high when the gas level exceeds definite point.A preset employed in the module is used to set the threshold or reference level. Interfacing with the SEN 1327 sensor module is done through a 4 pin SIP header.A MQ-6 gas sensor is used in the module. As per its datasheet, it has high sensitivity to propane, butane, isobutene, LPG and natural gas.Each time there is LPG Concentration of 1000 ppm (parts per million) in the area, the OUTPUT pin of the sensor module goes high.High voltage at the 4th pin (Reset pin) enables timer IC 555, which is wired as an astable multivibrator. The multivibrator essentially works as a tone originator.Without the high voltage at 4th pin (Reset pin) the IC remain in the Reset state.
Output pin 3 of IC 555 is connected to LED1 and speaker driver transistor SL100. LED1 glows and the alarm sounds to aware the user of gas leakage.The pitch of the tone can be changed by varying preset VR1.Provide a suitable heat sink for transistor SL100.
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I kindly request you to send me full report of lpg/cng gas detector using atmega32and mq5 sensor .
my email is malavikasreenath @gmail .com.
with faithfully
malavika sreenath
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