Automatic Fan Speed Control System

This chapter covers the ideas, generalization, conclusions, methodologies, and others. Those that were included on this chapter helps in familiarizing info that is related and much like the present research.

According to Kunla Singh (2015), Automatic Fan Speed Control system utilizing Arduino as we all know that we are slowly moving toward automation and Automation is among the trending topics. Basically in this project will be controlling the fan speed with respect to the temperature. The system will get the temperature from the temperature sensor and it’ll control the speed according to the temperature, set by the person.

In this project, microcontroller varieties the processing parts, which firstly senses the temperature and the controller then compares the information with the set temperature. If the current temperature is larger than the set temperature, the controller turns ON the fan and the set pace shall be proportional to the difference between the set temperature and the current temperature. If the present temperature is less than the set temperature, the fan shall be turned OFF.

The fan’s velocity will change according to the temperature.

Moreover, RipunjayChachan (2015), said designing an clever Temperature-Cum-Humidity monitoring gadget is depicted in this present project. The designing of the absolutely practical prototype is developed in-house. Once the humidity of the temperature will get out of the range talked about by the consumer the device sends an SMS to the user’s predefined number. This SMS contains data on the present temperature and the humidity. The developed system is also in a place to ship the data to the monitoring station for recording and graph plotting for analyzing functions on the later stage.

The developed system has been tested beneath numerous simulated conditions.

Jeffrey Alan Siegfried (2016) Remote Sensing to Quantify in-field soil moisture variability in irrigated maize manufacturing, Agriculture is the biggest shopper of water globally. As strain on out there water resources will increase, the want to exploit know-how so as to produce more meals with much less water becomes crucial. The technological hardware requisite for precise water supply methods corresponding to variable rate irrigation is commercially available. Despite that, strategies to formulate a well timed, accurate prescription for these systems are inadequate. Spectral vegetation indices, particularly Normalized Difference Vegetation Index, are sometimes used to gauge crop vigor and related parameters (e.g. leaf nitrogen content and grain yield). However, research rarely addresses the affect of soil moisture on the indices. Canopy temperature measured using cheap infrared thermometers could additionally serve as an indicator of water stress, however present methods which exploit the data may be cumbersome


According to RogobertoSolorio (2015), a web-based temperature monitoring system for the faculty of arts and letters The Web-Based Temperature Monitoring System for the College of Arts and Letters helps customers hold track of the College of Arts & Letters’ server room temperature from a remote location. The project’s mission is to inform system administrators through email/text if a important temperature has been reached inside the server room, in addition to provide a technique for displaying the current server room temperature.

Base on Robert Jaron (2016) in conclusion, our integrated board design has been accomplished and tested effectively. The system is intended to combine the temperature measurement part using temperature sensors, heater management unit utilizing PWM output and resistance change reading part utilizing the Wheatstone bridge principle for software of gasoline sensor know-how. Results show that the design standards have been glad to maintain the fuel sensing material at a predetermined temperature of 200°C and skim the resistance change of gas 39 sensors efficiently. However, there are few limitations relating to with accuracy and get in contact with space of the heater with a temperature sensor that have to be addressed in future works by making use of more tuning methods and efficient design. This work could be extended and optimized to achieve its final objective and high-level performance

Jeane A. Rodrigo (2015) Automatic soil moisture sensing water irrigation system with water stage indicator, the event of our project which is the Automatic Soil moisture Sensing Water Irrigation System with water level indicator is the gadget that may present the needed water when the soil moisture sensor detects if the soil is dry. LPU-Laguna Journal of Engineering and Computer Studies Vol. three No.1 September 2015 179 The development of program is obtained to operate the automatic irrigation system, given the scheduling course of that’s provided by the RTC, the amount of appropriate water(based on range of its soil moisture) needed to deliver for the crops is being managed so there is not any extra water, which mainly contributes to conservation of water.

Related Study


MD. Niamul Hassan (2015), an automatic monitoring and management system contained in the greenhouse in this work, we’ve proposed a framework that can collect the info recognized with greenhouse surroundings and yield status and control the system automatically in view of the gathered information. By throatily observing periodic situations, this examine has the reason for securing a connection between sensors flags and reference estimations. Control programming will give information finding of an ongoing present. Through a long-time running and functional utilizing, the framework has been demonstrated that it has numerous points of interest. To monitor the setting inside greenhouse completely different parameters have been thought-about corresponding to gentle, temperature, humidity, soil moisture etc. using completely different sensors like DHT22 temperature and humidity Sensor, LDR, grove-moisture sensor and so forth. which might be interfaced with the microcontroller. It is a closed loop system that can execute management action to adjust temperature, humidity, light intensity, and soil moisture if any unwanted errors (high/low) happen.

Daniela Atalla (2015) an Automated Greenhouse temperature and Soil Moisture Control. In this thesis an automatic greenhouse was built with the aim of investigating the watering system’s reliability and if a desired range of temperatures could be maintained. The microcontroller used to create the automated greenhouse was an Arduino UNO. This project utilizes two totally different sensors, a soil moisture sensor, and a temperature sensor. The sensors are controlling the two actuators which are a heating fan and a pump. The heating fan is used to alter the temperature and the pump is used to water the plant. The watering system and the temperature control system were examined each individually and together. The outcome confirmed that the temperature could probably be maintained in the desired vary. Results from the soil moisture sensor were uneven and subsequently interpret as unreliable.

M. Aziza (2015) Smart greenhouse fuzzy logic based mostly management system enhanced with wireless information monitoring Greenhouse climate management is an advanced process for the reason that number of variables concerned on it and which are dependent on each other. This paper presents a contribution to combine greenhouse inside local weather key’s parameters, leading to advertise a cushty micro-climate for the plant’s development whereas saving power and water resources. A good fuzzy logic based control system was introduced and improved via the precise measure to the temperature and humidity correlation. As well, the system management was enhanced with wi-fi knowledge monitoring platform for knowledge routing and logging, which provides real-time knowledge access. The proposed control system was experimentally validated. The effectivity of the system was evaluated showing important energy and water saving


Based on Tiger Print Philippines (2015) Automated Wireless Greenhouse Management System There are many Sensor Based Projects for Engineering Students. And out these tasks, Greenhouse monitoring and controlling project is used to measure the assorted parameters like Temperature, Humidity, and light-weight and soil moisture. Microcontroller shows these parameters on an LCD. Temperature, Humidity, and Light are sensed by respective sensors, soil moisture is sensed by 2 thin metal rods or metal wires. Sensor output of Temperature is amplified and along with different three sensors, it’s given to Analog to Digital Converter ADC. The microcontroller controls these parameters and keeps them below predefined levels using relay interface and motor drivers. These relays can be related to Fan/Heater and DC motors could be linked to respective units. For demo function, we’ve connected a 12 volt DC fan and a 12 volt DC bulb and two 12 volt DC motors. Values of temperature, humidity, and light-weight and soil moisture are sending to a pc via serial port. These values can be displayed on the PC utilizing a hyper terminal.

Edwin Basnet (2016) Smart Greenhouse Automation system Applying moving common algorithm, Automation of greenhouses has proved to be extraordinarily helpful in maximizing crop yields and minimizing labor costs. The optimum situations for cultivating crops are often maintained by means of programmed sensors and actuators with fixed monitoring of the system. In this paper, we’ve designed a prototype of a smart greenhouse utilizing Arduino microcontroller, simple but improved in feedbacks and algorithms. Only three necessary microclimatic parameters namely moisture stage, temperature, and lightweight are considered for the design of the system. Signals acquired from the sensors are first isolated and filtered to scale back noise before it’s processed by Arduino. With the assistance of the LabVIEW program, Time domain evaluation and Fast Fourier Transform (FFT) of the acquired alerts are carried out to research the waveform. Especially, for smoothing the outlying data digitally, Moving average algorithm is designed. With the implementation of this algorithm, variations within the sensed information which might happen from quickly altering surroundings or imprecise sensors could possibly be largely smoothed and steady output could be created. Also, actuators are controlled with fixed feedbacks to ensure desired conditions are all the time met.

Marien M. Medalla (2017) Greenhouse Monitoring and management system, coming into the period of Productivity, the agriculture business faces a need to remodel from the traditional production-oriented methodology to a brand new worth chain-oriented method. Information and communications technologies must be employed to create high-value markets and preserve international competitiveness. ITRI’s greenhouse monitoring and management system implement sensor monitoring of environmental parameters including temperature, humidity, illumination, and wind velocity. Greenhouse conditions for crop culturing can, therefore, be optimized via real-time analysis and control of things corresponding to shade and water. This technology has been subject tested and verified in greenhouse cultures of strawberries. The system is extremely customizable and features low operating costs, straightforward operation, and remote management functionality. It can assist farmers in automating their crop manufacturing management and enhancing the quality of produce.

Speed Limit Changes


Opening: Who here exceeds the posted speed limit while driving? If a faster speed limit was allowed, would you still exceed the posted limit? Well, in Illinois, starting January 1st, 2014 you will legally be able to go just a little faster on designated roads. I do not believe this is such a good change. Thesis: I believe that raising the speed limit will cause more accidents and safety issues while increasing the consumption of fuel, which is bad for the environment and economy. Preview: Today I’m going to discuss the negative aspects, causes and solutions to raising the legal speed limit on designated roads. I will share why I do not agree with the new, faster speed limit. Why does it matter: Raising the speed limit can cause more traffic accidents, resulting in more injuries and deaths. The increased speed will consume more fuel creating a negative impact on the environment and economy. The speed limit in Illinois should remain 65 miles per hour as currently posted on the roadways.


I. Negative aspects : “What’s wrong?”

Significant subject: There are numerous problems associated with raising the speed limit. Currently, the legal speed limit is 65 miles per hour on rural four-lane highways. Many people believe it is okay to go about five miles per hour over this posting (The news gazette). Raising the speed limit to 70 miles per hour will have people believe 75 miles per hour is acceptable (Legal Record). Why is it harmful?: Reaction times at increased speeds are reduced for drivers. The ability to avoid an accident or react to a situation while traveling faster creates more dangers to all people, whether they are the driver or passenger. The increase in speed also reduces the operating efficiency of the vehicles, resulting in higher fuel consumption and operating costs. The economy is affected by this lower efficiency and the environment is impacted by the increased production of fuel created by the lower efficiency. The environment is also impacted by cleanup of vehicle fluids that spill during an accident, if they are cleaned up properly at all.

II. Causes : “Why do we have the problem?”

Jerry Costello sponsored a bill to raise the existing speed limit from 65 to 70 miles per hour on rural four-lane highways. The Illinois House and Senate passed the bill and Governor Pat Quinn signed it into law (Chicago Tribune- Clout Street). Governor Quinn said “This limited five mile per hour increase will bring Illinois’ rural interstates speed limit in line with our neighbors and the majority of states across America” (Journal Star). However, the 86 miles per hour speed that motorists can still be charged with excessive speeding, will not change. State Representative Dan Brady disagrees. He believes that higher speed limits lead to higher personal injury (Huffington Post). Studies show 85 percent of the average driver on the interstate drives 72 to 74 miles per hour. He feels the 70 mile per hour speed limit will be abused by anywhere from 5 to 10 miles per hour (Legal Record). Studies show of the 34 states that have the 70 mile per hour speed limit in place, most have higher amounts of injuries and death tolls have risen as high as 9 percent. On average, 12,500 deaths are attributed to increased speed limits (Huffington Post). So far this year, on Illinois roadways, we are up to 855 deaths, and that is before the increased speed limit.

III. Solution: “How can we fix it?”

Procedure: The best way to keep the roadways safe, I believe, is to not alter the speed limit. With this being said, and the new speed limit already signed into law, the only responsible thing we can do at this point is to obey the new limit. Do not exceed the new limit as many people do 0the current limit. Future actions against the increased speed limit could be justified by a repeal of the law based on accidents and environmental impacts. This would require political actions that are not seen in the near future. I believe case studies should be recorded and reported to our government to demonstrate the dangers of the new, higher speed limit. Case Studies: Each state that raised their speed limit to 70 miles per hour experienced an increase in the average amount of deaths each year. Every state with speed limits higher than 65 miles per hour showed an increase in deaths that ranging from 7 percent to 13 percent. The study on the raised speed limit has been conducted for eight years (Huffington Post). In each of these years, the average annual fatalities have been higher since the speed limits were increased (Huffington Post).


I believe that raising the speed limit on rural four-lane highways will cause more accidents and safety issues while increasing the consumption of fuel, which is bad for the environment and economy. The justification for the increase by the government to match the speed limit of our neighboring states is not supported by the data. Case studies prove that the increase in speed is dangerous for both drivers and passengers. The environmental and economic impacts must be considered too. I do not support raising the speed limit and I believe the speed limit should remain 65 miles per hour on rural Illinois highways.

Speed limits and Complaint letter Essay Examples

1. c: There have been multiple debates over whether speed limits are a positive or negative thing for drivers. Some people have stated that speed limits are a good thing in that they help to regulate how fast someone is able to drive, and help to improve the safety of those driving. There are also those that state that by putting a limit on how fast you’re able to drive, it in turn takes away your freedom to enjoy the open road. Even though these are both very valid points, having a speed limit helps in two ways, it gives a sense of security, and also allows for more control over our roadways.

The best way to put into context that speed limits give a sense of security is that you can’t expect it to be safe to allow someone to drive 85-95 mph or more in a school zone. This is something that people would not expect but then again without speed limits showing what we are supposed to do that could in turn happen. Speed limits are a way to warn drivers about how fast they should drive on certain roads in order to be able to make their trip safely. By doing this, they are giving drivers a sense of security knowing that those around them have a set speed they need to stay at in order to not have any incidents with the law.

The other argument that can be made is that by the government instituting speed limits, it does allow local and state police officers more control over our local roadways. Without these, people would be more at risk for collisions that could cause bodily harm to themselves or others. This is the main point as to why police, and the government are to enforce those speed limits in order to maintain things like collisions from happening and to keep the community safe. So if you look at it from both sides, you will see that by having speed limits in your area, it not only gives you the driver the piece of mind and security knowing you have those limitations, but it also allows our government to have more control over our roadways.

2.Complaint letter

To whom it may concern:

I am writing because of a complain that I have with your company. I had placed an order for a complete set of records from your collection on 12/13/12, and was given a receive date of 1/6/13, unfortunately i did not receive them when i was promised. When I had contacted customer care i was informed that because of the shipment being delayed i would get something special in return. Yet neither the records or the special addition was ever delivered.

Failure to receive said product in the previous statement, I had to cancel three different music gigs that i had lined up and had ordered those records specifically for those events. This in turn had ramifications in that i was let go from the events i was set up for, and had lost the income that would have been involved with said events.

In order to rectify this situation, I would like to receive the order that was placed within the next ten days, so that i will be able to meet other commitments that i do have. Also I would like some sort of compensation for the time that has passed.

Sincerely, Yours