Gas detection for Raspberry Pi using ADS1x15 and MQ-2 sensors

Last update: Sep 30, 2022

Overview

Gas detection

Gas detection for Raspberry Pi using ADS1x15 and MQ-2 sensors.

Description

The MQ-2 sensor can detect multiple gases (CO, H2, CH4, LPG, propane, alcohol, smoke) and outputs analog voltage. This project can convert it to digital using ADS1015 or ADS1115 and filter out the target gases.

The sensor can be inaccurate so don't use those measurements if you need them for security purposes. Use some professional measurement device if you need to do this.

Usage

The detection class uses ADS1115 and it's I2C address 0x48 by default. It assumes the sensor is connected to P0. You can also pass them to arguments.

The ro value is about 1000, but it needs to be calibrated. This is done automatically if it is not specified. The calibration must be done in good fresh air to make measurements more accurate. Alternativly, you can save the calibration value and later pass it as ro argument.

from gas_detection import GasDetection

detection = GasDetection()

You can then read percentage of gases in parts per million (ppm). The measurements are returned as dictionary and gas be accessed by GAS_XX constant.

ppm = detection.percentage()

print('CO: {} ppm'.format(ppm[detection.CO_GAS]))
print('H2: {} ppm'.format(ppm[detection.H2_GAS]))
print('CH4: {} ppm'.format(ppm[detection.CH4_GAS]))
print('LPG: {} ppm'.format(ppm[detection.LPG_GAS]))
print('PROPANE: {} ppm'.format(ppm[detection.PROPANE_GAS]))
print('ALCOHOL: {} ppm'.format(ppm[detection.ALCOHOL_GAS]))
print('SMOKE: {} ppm\n'.format(ppm[detection.SMOKE_GAS]))

You can also look to example file for more examples. For more details how the values are calculated you can read tutorial on Raspberry Pi Tutorials.

Versioning

This library uses SemVer for versioning. For the versions available, see the tags on this repository.

License

This library is licensed under the GPLv3+ license. See the LICENSE file for details.

A lot of code has been taken from Raspberry-Pi-Gas-Sensor-MQ. Thank you @tutRPi and others who contributed to that repository.

A facial recognition doorbell system using a Raspberry Pi

Facial Recognition Doorbell This project expands on the person-detecting doorbell system to allow it to identify faces, and announce names accordingly

22 Apr 15, 2022

BarcodeRattler - A Raspberry Pi Powered Barcode Reader to load a game on the Mister FPGA using MBC

Barcode Rattler A Raspberry Pi Powered Barcode Reader to load a game on the Mist

29 Oct 31, 2022

Cancer-and-Tumor-Detection-Using-Inception-model - In this repo i am gonna show you how i did cancer/tumor detection in lungs using deep neural networks, specifically here the Inception model by google.

Cancer-and-Tumor-Detection-Using-Inception-model In this repo i am gonna show you how i did cancer/tumor detection in lungs using deep neural networks

1 Jan 1, 2022

🍅🍅🍅YOLOv5-Lite: lighter, faster and easier to deploy. Evolved from yolov5 and the size of model is only 1.7M (int8) and 3.3M (fp16). It can reach 10+ FPS on the Raspberry Pi 4B when the input size is 320×320~

YOLOv5-Lite：lighter, faster and easier to deploy Perform a series of ablation experiments on yolov5 to make it lighter (smaller Flops, lower memory, a

1.5k Jan 5, 2023

An open source bike computer based on Raspberry Pi Zero (W, WH) with GPS and ANT+. Including offline map and navigation.

Pi Zero Bikecomputer An open-source bike computer based on Raspberry Pi Zero (W, WH) with GPS and ANT+ https://github.com/hishizuka/pizero_bikecompute

264 Jan 2, 2023

Axel - 3D printed robotic hands and they controll with Raspberry Pi and Arduino combo

Axel It's our graduation project about 3D printed robotic hands and they control

0 Feb 14, 2022

An air quality monitoring service with a Raspberry Pi and a SDS011 sensor.

Raspberry Pi Air Quality Monitor A simple air quality monitoring service for the Raspberry Pi. Installation Clone the repository and run the following

24 Dec 9, 2022

E-Ink Magic Calendar that automatically syncs to Google Calendar and runs off a battery powered Raspberry Pi Zero

MagInkCal This repo contains the code needed to drive an E-Ink Magic Calendar that uses a battery powered (PiSugar2) Raspberry Pi Zero WH to retrieve

2.8k Dec 28, 2022

A very lightweight monitoring system for Raspberry Pi clusters running Kubernetes.

OMNI A very lightweight monitoring system for Raspberry Pi clusters running Kubernetes. Why? When I finished my Kubernetes cluster using a few Raspber

148 Dec 29, 2022

Comments

Non percentage value

Hi @filips123

Thanks for the great library!

It would be very nice to have the possibility to choose between the percentage output and maybe something more "readable" like this kind of output.

opened by goldyfruit 1

seems wrong calculation in adc

I am using 16 bit adc. Shouldn't 1023 be 2^16 ?

def MQResistanceCalculation(self, raw_adc):
    return float(self.RL_VALUE*(1023.0-raw_adc)/float(raw_adc));

opened by SujonBd71 1

OPCUA and GasDetection
Hello! I want to use this package for OPCUA Client and Server and I don't know how to use this module for getting value from sensor and publish this in the cloud platform. could you please help me? this is my server python code. "X" is the part for MQ2 module and I have to complete this.

from opcua import Server import time from gas_detection import GasDetection

X = MQ2

server = Server() url = "opc.tcp://xxx.xxx.x.xxx:4840" server.set_endpoint(url)

name = "OPCUA server" addSpace = server.register_namespace(name)

node = server.get_objects_node() param = node.add_object(addSpace, "Parameters")

var = param.add_variable(addSpace, "Variable", X) var.set_writable()

server.start()

try: while True:

v = var.get_value() print("Variable =" .format(v)) time.sleep(0.25)

except KeyboardInterrupt: print('\nAborted by user!')
opened by Shining9311 0

Releases(v1.0.1)

v1.0.1(Feb 27, 2019)
Added

Distribution builds (bdist).

Source code(tar.gz)
Source code(zip)
v1.0.0(Dec 19, 2018)
Added

First version of package.

Source code(tar.gz)
Source code(zip)

Owner

Filip Š

GitHub Repository https://pypi.org/project/gas-detection/

Inference pipeline for our participation in the FeTA challenge 2021.

feta-inference Inference pipeline for our participation in the FeTA challenge 2021. Team name: TRABIT Installation Download the two folders in https:/

2 Apr 13, 2022

Forecasting with Gradient Boosted Time Series Decomposition

ThymeBoost ThymeBoost combines time series decomposition with gradient boosting to provide a flexible mix-and-match time series framework for spicy fo

131 Jan 08, 2023

A Shading-Guided Generative Implicit Model for Shape-Accurate 3D-Aware Image Synthesis

A Shading-Guided Generative Implicit Model for Shape-Accurate 3D-Aware Image Synthesis Project Page | Paper A Shading-Guided Generative Implicit Model

115 Dec 18, 2022

Automatic caption evaluation metric based on typicality analysis.

SeMantic and linguistic UndeRstanding Fusion (SMURF) Automatic caption evaluation metric described in the paper "SMURF: SeMantic and linguistic UndeRs

6 Jan 09, 2022

MMDetection3D is an open source object detection toolbox based on PyTorch

MMDetection3D is an open source object detection toolbox based on PyTorch, towards the next-generation platform for general 3D detection. It is a part of the OpenMMLab project developed by MMLab.

3.2k Jan 05, 2023

Cryptocurrency Prediction with Artificial Intelligence (Deep Learning via LSTM Neural Networks)

Cryptocurrency Prediction with Artificial Intelligence (Deep Learning via LSTM Neural Networks)- Emirhan BULUT

102 Nov 18, 2022

PyTorch implementation of our CVPR2021 (oral) paper "Prototype Augmentation and Self-Supervision for Incremental Learning"

PASS - Official PyTorch Implementation [CVPR2021 Oral] Prototype Augmentation and Self-Supervision for Incremental Learning Fei Zhu, Xu-Yao Zhang, Chu

67 Dec 27, 2022

DTCN IJCAI - Sequential prediction learning framework and algorithm

DTCN This is the implementation of our paper "Sequential Prediction of Social Me

2 Jan 24, 2022

An NLP library with Awesome pre-trained Transformer models and easy-to-use interface, supporting wide-range of NLP tasks from research to industrial applications.

简体中文 | English News [2021-10-12] PaddleNLP 2.1版本已发布！新增开箱即用的NLP任务能力、Prompt Tuning应用示例与生成任务的高性能推理！ 🎉 更多详细升级信息请查看Release Note。 [2021-08-22]《千言：面向事实一致性的生

6.9k Jan 01, 2023

NaijaSenti is an open-source sentiment and emotion corpora for four major Nigerian languages

NaijaSenti is an open-source sentiment and emotion corpora for four major Nigerian languages. This project was supported by lacuna-fund initiatives. Jump straight to one of the sections below, or jus

14 Dec 20, 2022

A ssl analyzer which could analyzer target domain's certificate.

ssl_analyzer A ssl analyzer which could analyzer target domain's certificate. Analyze the domain name ssl certificate information according to the inp

17 Dec 12, 2022

This is an official implementation for "Exploiting Temporal Contexts with Strided Transformer for 3D Human Pose Estimation".

Exploiting Temporal Contexts with Strided Transformer for 3D Human Pose Estimation This repo is the official implementation of Exploiting Temporal Con

241 Jan 07, 2023

Lighthouse: Predicting Lighting Volumes for Spatially-Coherent Illumination

Lighthouse: Predicting Lighting Volumes for Spatially-Coherent Illumination Pratul P. Srinivasan, Ben Mildenhall, Matthew Tancik, Jonathan T. Barron,

65 Dec 14, 2022

A synthetic texture-invariant dataset for object detection of UAVs

A synthetic dataset for object detection of UAVs This repository contains a synthetic datasets accompanying the paper Sim2Air - Synthetic aerial datas

10 Aug 13, 2022

This repo contains research materials released by members of the Google Brain team in Tokyo.

Brain Tokyo Workshop 🧠 🗼 This repo contains research materials released by members of the Google Brain team in Tokyo. Past Projects Weight Agnostic

1.2k Jan 02, 2023

Official implementation of "Learning Forward Dynamics Model and Informed Trajectory Sampler for Safe Quadruped Navigation" (RSS 2022)

Intro Official implementation of "Learning Forward Dynamics Model and Informed Trajectory Sampler for Safe Quadruped Navigation" Robotics:Science and

21 Dec 07, 2022