• Smart Solution for road traffic

    AUTONOMOUS SELF-REGULATING SYSTEM CONCERNING ORGANISATION AND REGULATION OF ROAD TRAFFIC

    Purpose of the system

              
              The topic of road safety is up to date and problems of road safety have increased in recent years at European and national level. Protecting the life and health of people involved in traffic is a priority.
                The vision of road safety is a description of a desirable state in the future based on a theory about the way in which the various components of the traffic system interact or must interact.


              Signals and markings can provide important information to improve road safety. They guide, warn and direct road users. When people know what to expect, chances are greater that they can react and behave accordingly. Traffic participants can process at once only a limited amount of information. Too many signs of a section may confuse and distract participants in the traffic rather than help them. Too many signs may also result in non-observance and ignoring them. In order to reduce the use of valuable raw materials, to improve road security and safety,  to decrease the number of motor vehicle collisions / MVC/, I have devised this autonomous self-regulating system concerning the organization and regulation of traffic. This system can promptly alert in case of a MVC and depending on weather and road conditions to limit speed. Dynamic speed limits can help to harmonize traffic flow and to increase traffic flow in areas with high traffic, improving road safety and having major impact on the speed of motor vehicles in order to prevent from traffic accidents. They adapt to the surrounding environment being climate (fog, a very strong wind, rain, snow, ice over road pavement), mechanical obstacles (landslide of earth and stones), traffic jam from various reasons. 

    Aim of the project

    The project aims at establishing a system to improve road safety. It is a long-term purpose without a specific framework in time. On time, the submitted up to date traffic information through the system will lead to preventing and reducing the number of road accidents.

    Functionality of the system

                The system for organization and regulation of traffic is completely autonomous.  It changes the speed limit according to the surroundings. This is called dynamic limitation, which helps the transport flow and security on the road and reduces the number of MVCs. Most often the system is adjusted to climatic conditions. An example of such conditions is fog, a very strong wind, heavy rains and many others. According to these weather conditions it changes the speed limit. When conditions are not presupposed for driving at a high speed, the system reduces the speed limit and vice versa, when conditions are presupposed for driving at high speeds, the system increases the speed limit. Depending on the location of the system, it is with a different main speed limit. If it is located in an urban area, it takes into consideration to restrict to the speed limit permitted in settlement. If it is placed in uninhabited locations, on a road or a highway, the speed limit will be consistent with the location. The system can be changed during intensive traffic.
                     An important feature of the system for organization and regulation of traffic is signaling in case of a MVC. By reporting a traffic accident, the system knows that it is necessary to put warning signs. Thus, until a police car arrives, other cars will take heed and will avoid other accidents or chain car crashes due to inattention or not so quick reflexes of some drivers.


                 Creating a web platform will enable a user to see the locations of the systems for organization and regulation of traffic and their coordinates. There will be not only coordinates in it, but, in addition, there will be a phone number and it will be different for each system. By issuing an alert via sms it will be known precisely to which system the corresponding signal is supplied. This will be a warning signal for the drivers.
                 Sign № A39 is a road sign from the group of warning signs for attention. The system changes the sign from a speed limit sign to a warning sign for attention. This functionality makes roads more secure and safer, reducing risks of new MVC and secondary accidents, and most importantly, it prevents the lack of unawareness of the drivers until police arrives.

    Operating principle, scheme of the principle and elaboration

    In the autonomous self-regulating system of the organization and regulation of traffic there are multiple sensors and modules that allow the system to navigate in the surroundings and to receive signals for MVC and other accidents.
    In order to see the position of the sign through the web platform the system has GPS and WiFi modules that allow all this to be in real time. The visualization of the system is carried out through a set of matrices that are made of 520 LED that glow bright red. The diodes are bright, so that the drivers can easily notice what the system is visualizing during the day and night, even in surroundings with reduced visibility. Through a system with a phototransistor and multiple diodes of high brightness the matrix is automatically adjusted. The bright diodes have a large viewing angle and allow drivers to see clearly what is displayed on the system from many different angles. The matrices are insulated by a silicone layer on the inside of the system. This extends the life of the system and prevents the entry of moisture and sudden stopping of the system.


    The matrices of diodes can visualize two basic configurations. One of them is to show a warning sign and the other shows a sign for speed limitation in the relevant 10, 20, 30, 40, 50, 70, 80, 90 km/h. Depending on the sensors for pressure, temperature and air humidity, the system displays many varieties of limitations. The sensors are attached to the mounting box by hot links, so they can be easily replaced in case of damage. An example of a visualizing restriction on the value from a sensor is when the temperature drops and the designated limit changes to a lower value. In a period of values of the sensors а visualization image remains in its basic state and can be adjusted depending on the location. In settlements it will be 50 km / h. This matrix is set to a box for installation, which allows the matrix to be removed and to be replaced with another matrix in the most simple and accessible way. The purpose of the box is to protect from external climatic conditions. It is attached to a mounting tube, which implies easy placement of the system in different places. Except the sensors and the matrices that can be removed in a quick and easy way, in this installation box there is a great deal of modules which communicate with each other.

    The system has GPS and WiFi modules. The GPS module is attached to the mounting box and has a warm bond through which in case of defect it can be replaced with a new one easily and quickly. The antenna module is easily replaceable and if there is damage, it can be changed without moving or removing the module from the device. The GPS module is showing the location of the system in real time.
    The Wi Fi module is attached to the mounting box and is connected with a warm connection to allow in case of damage to be replaced quickly and easily. It is insulated with a thin layer of silicone that protects it from moisture and it extends the life of the module. The Wi Fi module takes information from the GPS module, which is the actual location of the system, and via 3G or 4G communication transmits this information to the Web platform that processes it and makes it available to users.
    The system has a GSM module, which is fixed to the mounting box and is bound by cold connection because failure upon it is unlikely. It allows the user to put a card of the mobile operator, and through that card the number of the system can be changed easily and quickly. If you change the card and therefore the number, the WiFi module will give new information to the Web platform and the user will have access to the latest information. Via the GSM module the system receives signals for MVC and other accidents and then the matrices of the system display a warning sign. The GPS module can receive many signals simultaneously and pass the information to a microcontroller that processes the data. It is the main component of the system. It is placed in the center of the system and every module, sensor and matrice is connected to it because it processes the whole information and tells what the matrices to visualize. The microcontroller is set to an accessible place so that when it defects the problem to be removed quickly and easily. The entire structure is made secure, easily accessible and functional.

    Parts that are being used

    ·         Microcontroller Arduino Mega 2560 that processes all the information and is able to be built on it with a lot more functionalities of the system. It is easy to find and accessible to everyone, but it is difficult to be repaired, so it is recommended upon damage to be replaced with a new one.
    ·         Sensor for temperature and humidity DHT11 - it allows to simultaneously measure the temperature and moisture levels slightly diverging from the actual ones. It is easy to find and repair.
    ·         Sensor for pressure and temperature BMP180 – it allows measurement of pressure and temperature and can display at what altitude the system is. It is easy to find and to repair. In the measurements of temperature and pressure there are no deviations from the actual values, if there are any, they are not very noticeable. There are deviations from the actual values of the altitude, but the difference is very small.
    ·         Super bright red diodes with a large viewing angle – 520 diodes.
    ·         Resistors for the super bright red LED – 520 resistors.
    ·         Mounting box which is isolated from external climatic influences, and a mounting tube which can easily be placed anywhere within the site.
    ·         Wi Fi module ESP8266. This is the most used and most reliable module. It is easy to find, but can't be repaired, it can only be replaced if damaged.
    ·         GPS Module Aircraft Flight Controller. It is easy to find and easy to repair. It consists of two parts: an antenna and a circuit board. Each of these parts can easily be replaced. The antenna can be detached and can be replaced with another in case of damage and there is no need to change the whole module. This makes it more desirable than others. It is the most used GPS Module.
    ·         GSM module - a simple module with a card slot that allows the user to change the cards of mobile operators and thus change the number of the system. It is a well known and used module that is simple and easy to find. It requires no maintenance.
    ·         Phototransistors that regulate the brightness of the LED.

    Sustainability and development of the project

    The micro controller allows upgrading the system. The idea is to add additional sensors for better and more complete information of the system receiving the changes from the surroundings. The perfection and the mobility of the system can be achieved by using platforms not only for smartphones and computers, but also for Android and Iphone apps. This will ease the access of a greater number of users.

    Summary

    The topic of road safety is up to date and problems of road safety have increased in recent years at European and national level. Preserving the life and the health of the people participating in road traffic is of top priority. Signals, signs and markings can be of great importance for increasing the road safety. They control, warn and guide drivers.
    The goal of the project goal is creating a system that can improve safety on the road. It is a long-term purpose without a specific frame in time. By giving correct information about the road surroundings it could prevent and reduce the number of car accidents.
    The system for organization and regulation of the traffic is completely autonomous. According to the surroundings, it changes the speed limit. That dynamic restriction helps the traffic flow and safety on the road.
    An important function of the system is signalizing and receiving current information. This is achieved by using a web platform. The platform gives an opportunity to localize where the systems for organizing and regulation of the traffic on the roads and their coordinates are. Except the coordinates there will be a mobile phone in the system. By sending a signal through a text message it will be known just to which system this signal is being forwarded to. This message will initiate a warning signal for car drivers.


    Sign № А39: “Attention! Other dangers” is a road sign from a group of warning road signs of dangers. The system will change the sign for speed limit into a warning sign for attention. This functionality of the system will make the roads more secure and safer, it will reduce the risks of more car crashes and a multiple pile-up, the most important thing is that it will inform drivers of the accident, until the police arrives.
    For the moment the system is designed for smartphones and computers only, but the idea is to install additional sensors for better and more complete information about the changes in the surroundings. The perfection of the system and its mobility can be achieved by using platforms not only for smartphones and computers, but also for Android and Iphone apps. By doing this, we will make the access easier for a greater number of users.


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    Colorblind - Dalton

    This one of the biggest project that i am working on it.

    Dalton is software allowing people with different kinds of color blindness (colour vision deficiency) to see more colors.

    Dalton provides solutions to some of the everyday problems experienced by colour blind people. People with various types of colour deficiency could benefit from the use of Dalton software including those affected by Tritanopia (blue colour vision deficiency), Deuteranopia (green), Protanopia (red).

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