The present invention relates to a gas level detection system. More particularly, the gas level detection system for sewage lines.

Background of the Invention
Sewage lines is full of toxic gases, such as hydrogen sulphide, methane etc. Inhaling these gases for long duration can cause serious health problems. Because of these gases, death rate of sewage workers increases in recent years. There are currently no technologies available for providing the alertness to the workers before entering the sewage line for cleaning work.

US5261268A discloses a gas leak detection system comprises a flow sensor for detecting the amount of gas flowing through a gas flow passage, a flow signal generator for producing a flow signal representing the quantity of gas flow detected by the flow sensor, a pressure sensor installed in the gas flow passage at a point upstream of the flow sensor for detecting the gas pressure in the gas flow passage, a pressure signal generator for producing a pressure signal representing fluctuations in the pressure detected by the pressure sensor and a computing device electrically connected with the flow signal generator and the pressure signal generator. When it is found that no flow signal is being produced, the pressure fluctuation is compared with a prescribed pressure fluctuation range and a leak signal is produced when the pressure fluctuation value falls within the prescribed range.

US5202570A discloses a gas detection device employs a tunable wavelength laser, modulated about an absorption line of a gas to be detected. By measuring the ratio of the fundamental to the second harmonic of the modulation frequency, the detection is independent of the optical path length. This permits an aimable device in which a laser beam is directed toward a remote surface, reflected thereby, and the reflected beam focused upon a detector. The presence of the gas to be detected in the space between the device and the reflective surface is thereby determined.

US3624627A discloses a system for sensing the presence of a leak in a closed gas network interconnecting a gas source with a plurality of gas consuming appliances including thermostatic controls for automatically signalling demand to supply the selected appliances. A manual switchover to leak detection means is provided as well as automatic switchback means to appliance-feed operation that bypasses the leak detection circuit when a demand controlled appliance call for gas, and that switches over to the leak-detection circuit again when the demand ceases. Means are operably coupled in the network to indicate the detection of a leak in the system which may take the form of an alarm involving audible, visual or other attention-attracting media.

Therefore, there is a need to make efforts and technical advancements to prepare a system that can sense the presence of harmful gases in sewage pipelines and alert the workers.
Objectives of the Invention

The prime objective of the present invention is to provide the gas level detection system for sewage lines.

Another object of this invention is to provide the gas level detection system for sewage lines that includes Arduino, Gas Sensor, Breadboard, Resistor, LCD Display, Buzzer, and LED Bulb.

Another object of this invention is to provide the gas level detection system for sewage lines where the system provides adequate visual information, audible and timely alert on detecting a gas level.

Another object of this invention is to provide the gas level detection system for sewage lines where the buzzer provides alert and a signal of red and green color depicting the level of gas.

Another object of this invention is to provide the gas level detection system for sewage lines where display shows "ALERT" when tuning the buzzer. If the buzzer won't tune, the display will show "SAFE".

Yet another object of this invention is to provide the gas level detection system for sewage lines where the conductivity of the sensor depends on the concentration of the gas, so it can detect not only hazardous gas but also smoke.

Still yet another object of this invention is to provide the gas level detection system for sewage lines that has an effective low-cost solution for condition monitoring of these toxic gases and provide alert to the workers in case of any danger, portable, light weight, user friendly and efficient with multi-functional features.

These and other objects of the present invention will be apparent from the drawings and descriptions herein. Every object of the invention is attained by at least one embodiment of the present invention.

Summary of the Invention
In one aspect of the present invention provides the gas level detection system for sewage lines where the system provides adequate visual information, audible and timely alert on detecting a gas level.
In one of the aspects, in the present invention, the buzzer provides an alert and a signal of red and green color depicting the level of gases, the display shows "ALERT" when tuning the buzzer. If the buzzer won't tune, the display will show "SAFE".
In another aspect of the present invention has an effective low-cost solution for condition monitoring of these toxic gases and provide alert to the workers in case of any danger, portable, light weight, user friendly and efficient with multi-functional features.

Brief Description of Drawings
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. Further objectives and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawing and wherein:

Figure 1 illustrates the flow diagram according to an embodiment of the present invention.
Figure 2 (a) illustrates the circuitry view according to an embodiment of the present invention.

Figure 2 (b) illustrates the circuitry view according to another embodiment of the present invention.

DETAIL DESCRIPTION OF INVENTION
Unless the context requires otherwise, throughout the specification which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense that is as “including, but not limited to”.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.

Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” include plural referents unless the content clearly dictates otherwise. It should also be noted that the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.

The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.

The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments. Reference will now be made in detail to the exemplary embodiments of the present invention.

The present invention discloses a gas level detection system for sewage lines where the system provides adequate visual information, audible and timely alert on detecting a gas level as depicted in Figure 1.

In describing the preferred embodiment of the present invention, reference will be made herein to like numerals refer to like features of the invention.

Arduino: - Arduino is an open-source platform used for building electronics projects. Arduino consists of both a physical programmable circuit board (often referred to as a Microcontroller) and a piece of Software, or IDE (Integrated Development Environment) that runs on your computer, used to write and upload computer code to the physical board.
Gas Sensor:-.A gas sensor is a device which detects the presence or concentration of gases in the atmosphere. Based on the concentration of the gas the sensor produces a corresponding potential difference by changing the resistance of the material inside the sensor, which can be measured as output voltage. Based on this voltage value the type and concentration of the gas can be estimated.
Breadboard:-A breadboard is used to make up temporary circuits for testing or to try out an idea. It is used to hold electronic components (transistors, resistors, chips, etc.) that are wired together.
Resistor: -A Resistor is an electric component that creates the resistance in the flow of electric current.
LCD Display: - An LCD (Liquid Crystal Display) is an electronic display module that uses Liquid crystal to produce a visible image.
Buzzer: -A Buzzer is an audio signaling device, which may be mechanical, electromechanical or piezoelectric. In the present invention when the sensor detects gas in the atmosphere, the buzzer starts tuning, so it also indicates harmful gases present in the sewage line.
LED Bulb: - LED are small, powerful lights that are used in many different applications. The red and a green signal are used that means if the signal is red then the worker would not enter in the sewage line and if it is green then the worker can enter in the sewage line and do the cleaning work.

According to the preferred embodiment of the present invention, the gas level detection system (1) for sewage lines comprises of arduino Uno(2), gas sensor (3), breadboard (4), resistor(5), LCD display (6), buzzer (7), LED bulb (8a, 8b) and harmful gases (9); where the buzzer (7) provides an alert and a signal of red and green color depicts the level of gas (9).

According to another embodiment of the present invention, there are mainly four gases that are present in a huge amount in the sewage lines i.e., Methane, Hydrogen Sulphide, Carbon Di Oxide and Ammonia among which Hydrogen Sulphide is the most toxic gas. For detecting and sensing the level of these gases four different types of gas sensors (3) are used which particularly sense every gas present in the sewage line. These sensors (3) are attached to an Arduino Uno (2), the board (4) contains a green and red LED (8a, 8b), the resistor (5) creates the resistance in the flow of electric current; if the level of the gases (9) is under the limit, and then green LED (8a) will glow otherwise the red LED (8b) will glow.

According to another embodiment of the present invention, when the harmful gas (9) is far away from sensor (3) [In Figure 2(a)] then the display (6) show SAFE as an output and the green light (8a) is on. But as soon as gas (9) goes near the sensor(3) [In Figure 2(b)], the display (6) gives ALERT as an output, then the red lights (8b)turns on and Buzzer (7) starts buzzing.

According to an embodiment of the present invention, the conductivity of the sensor (3) depends on the concentration of the gases (9), so it can detect not only hazardous gases (9)but also smoke.

According to another embodiment, the present invention has an effective low-cost solution for condition monitoring of these toxic gases and provide alert to the workers in case of any danger, portable, light weight, user friendly and efficient with multi-functional features.

Although a preferred embodiment of the invention has been illustrated and described, it will at once be apparent to those skilled in the art that the invention includes advantages and features over and beyond the specific illustrated construction. Accordingly it is intended that the scope of the invention be limited solely by the scope of the hereinafter appended claims, and not by the foregoing specification, when interpreted in light of the relevant prior art.

List of Reference Numbers

1. gas level detection system 2. arduino Uno
3. gas sensor 4. breadboard
5. resistor 6. LCD display
7. buzzer 8. LED bulb (8a, 8b)
9. harmful gases

We claim;

1. A gas level detection system (1) for sewage lines comprises of a arduino Uno(2), a gas sensor (3), a breadboard (4), a resistor (5), a LCD display (6), a buzzer (7), a LED bulb (8a, 8b) and a harmful gases (9); where the buzzer (7) provides an alert and a signal of red and green color (8a, 8b) depicts the level of the gases (9).

2. The gas level detection system (1) for sewage lines as claimed in claim 1, wherein if the harmful gas (9) is far away from sensor (3) then the display (6) shows SAFE as an output and the green light (8a) is on,

3. The gas level detection system (1) for sewage lines as claimed in claim 1, wherein as soon as gas (9) goes near the sensor(3), the display (6) gives ALERT as an output, then the red lights (8b)turns on and Buzzer (7) starts buzzing.

4. The gas level detection system (1) for sewage lines as claimed in claim 1, wherein the conductivity of the sensor (3) depends on the concentration of the gases (9), so it can detect not only hazardous gases (9)but also smoke.