car speed checker with lcd display in stock

The project is a speed checker system that can detect rash driving and any kind of speed violation on highways and alert the traffic authorities. The conventional system uses a handheld radar gun which is aimed at the vehicle to record its speed and if there is any speed violation, nearest police station is informed. This process involves a lot of time consumption. Hence the proposed system is used to check the speed by calculating the time taken to travel between two set points at certain distance.

An IR transmitter and a receiver are installed on the set points on either side of the road. A control unit calculates the time taken by the vehicle to travel from one set point to other and calculates the speed that is displayed on seven segment display. If the calculated speed limit exceeds the set speed, a buzzer is sound which alerts the road transport authority.

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Apart from eddy currents and spinning cables, late-19th- and early-20th-century inventors tried a few other ways of measuring speed using ingenious mechanical methods. There were governor speedometers, for example, which worked a bit like

centrifugal governors (speed limiters) in steam engines, with weights that lifted up higher as an axle span round faster. The weights were connected to a lever that pushed a needle up and down a dial to indicate speed. In 1916, a company called Waltham

patented an air-cup mechanism similar to the eddy-current design but with a pair of air-filled cups facing one another. As one cup rotated, the spinning air inside it pulled on the air in a second nearby cup, connected to a pointer and hair spring, just like in an eddy-current speedometer.

Photo: There are quite a few speedometer apps for smartphones, which calculate your speed using GPS (satellite positioning) (or other phone-location) signals (how far you"ve traveled) and the time. This one"s Speedometer Complete for the iPhone, by Daniel J. Pérez.

Pretty much all speedometers produced until the 1980s worked using the eddy current and cable mechanism—much like Schulze"s original, patented design. But there are drawbacks. First, there are lots of mechanical parts to wear out (which makes them inaccurate)

Artwork: How an electronic speedometer works: 1) A magnet connected to one of the wheels (or more likely to a driveshaft attached to one of the wheels) rotates at high speed. 2) Every time it makes one complete revolution, it passes a Hall-effect (or other magnetic) sensor and the field from the magnet triggers the sensor. 3) A circuit amplifies the signals from the sensor and translates them into your instantaneous speed and distance traveled. 4) A digital display on the dashboard acts as both a speedometer and odometer, displaying the speed and distance side by side.

You might have heard the slogans like “Over Speeding kills”, “Drive slowly”, etc. on the roads. Over speeding is a threat to the lives of the people as it can take the life of the driver, people sitting in the vehicle or people on the roads. Therefore there must be strict rules and regulations for driving the vehicle at certain speed limits on certain roads. For this to be done traffic police must have some instrument which can help them to detect the speed of the vehicle so in case of over speeding of any vehicle they can charge the fine or take necessary actions against the driver. There is a handheld gun which makes the process tedious and the policeman has to check manually the speed of every vehicle.

So we bring you a project which can help you to detect the speed of the vehicles easily and automatically. This is a very simple project and not costly. You just need on a microcontroller like Arduino Uno and two IR sensors to detect the speed of the vehicles. This project will help you to detect the speed of a moving car easily without any human intervention by simply placing it somewhere on the road. This project is just a prototype and can be implemented on a large scale.

Arduino is an open-source platform which is used to develop an electronics project. It can be easily programmed, erased and reprogrammed at any instant of the time. There are many Arduino boards available in the market like Arduino UNO, Arduino Nano, Arduino Mega, Arduino lilypad, etc with having different specification according to their use. In this project, we are going to use Arduino UNO to control home appliances automatically. It has ATmega328 microcontroller IC on it which runs on 16MHz clock speed. It is a powerful which can work on USART, I2C and SPI communication protocols.

This board is usually programmed using software Arduino IDE using a micro USB cable. ATmega328 comes with preprogrammed onboard boot loader which makes it easier to upload the code without the help on external hardware. It has vast application in making electronics projects or products. The C and C++ language is used to program the board which is very easy to learn and use. Arduino IDE makes it much easier to program. It separates the code in two parts i.e. void setup () and void loop (). The function void setup() runs only one time and used for mainly initiating some process whereas void loop() consists the part of the code which should be executed continuously.

Basically, interrupts helps us to make our system more responsive to time-sensitive tasks. A processor doing a normal execution can be interrupted by some sensor to execute a particular process that is present in ISR (Interrupt Service Routine) and after executing the ISR processor can again resume the normal execution. For instance in this project whenever the IR sensor will detect any car then it will trigger an interrupt to the Arduino UNO will immediately stop all its process and will signal detection of the object or car by the IR sensor.

IR Sensor module comes with 3 pins, two of them are VCC and Ground and one is the digital output pins which activate when it detects some obstacle. This pin goes to GPIO pin to either GPIO pin or interrupts pin on the microcontroller. In this project, we will be using two IR sensors to detect the speed of the car. These are to be connected to the two different interrupt pins on the Arduino UNO which further will be used to detect the time of the distance covered between two IR sensors.

IR sensor is the main part of this project as it is used to detect when a car is passed through it. When a car passes the 1st IR sensor, it detects and sends an interrupt signal to the microcontroller. Now we calculate the time till the car reaches the IR sensor 2. The difference of both the time is the travel distance from one sensor to the other. We get the time in which car travels a distance of 30 centimeters so we can calculate the speed of the car. Since it is just a prototype and we are using toy cars, therefore, we are taking distance as 30 centimeters. Now we can set any parameter for over speeding of the car. For instance, if the speed of the car is more than 60 m/sec then it displays over speeding on the serial monitor.

The ir1 and ir2 are the external interrupt pins used on the Arduino Uno. T, T1, and T2 are the variables to calculate the time. Since for this project we are placing the two IR sensors at a distance of 30 centimeters, therefore, we have taken distance as 30 to calculate speed.

T1 is the time of for detecting car by IR sensor 1 and T2 is the time for detecting IR sensor 2. The difference in both the time is the time taken to travel the distance between two IR sensors.

This was the prototype of the calculating over speeding of the car. This idea can be implemented on roads by using real cars and increasing the distance between the two IR sensors. This project can be used to capture the speed of the vehicles without any human involvement. Also, it can be used in traffic logger, traffic counter and many more traffic-related applications.

While driving on highways, drivers should not exceed the maximum speed limit permitted for their vehicle. However, accidents keep on occurring due to speed violations as drivers follow their speedometers and control their speed according to them, and reduce the speed if they find it to be exceeding and beyond their control. A highway speed checker comes handy for the traffic police, especially against the speed limit violators  because it provides the digital display as well as buzzing sound or alarm to detect any vehicle speed if the vehicle exceeds the permitted speed limit.

The make up of these highways, sometimes leads to accidents because most of the times, there is no rule to govern speed limits on these highways.  To overcome this problem, we have implemented a circuit called as a speed checker for highways. This kit is inexpensive and it is used for considering the average and high speed of vehicles that move on the highways or  roads.

By taking all these considerations in mind, we have designed a highway- speed checker circuit to detect the rash driving by using different electronic components such as timer, counter, logic gates, microcontroller, seven segment display and all other components. To understand this circuit better, the following paragraphs describe a project report on speed-checker for highways, which covers three types of speed checker projects that can be controlled using three types of controllers.

Nowadays, in our daily life most of the accidents occur due to rash driving on highways which may lead to the loss of many lives. Therefore, to overcome this problem, the following project implements a speed checker to detect rash driving on highways by using a timer.

The main objective of this system is to develop a highway speed-checker device that detects rash driving on highways and alerts, traffic authorities if the speed checker finds any vehicle violating the set speed limits on highways.

The proposed system checks rash driving by calculating the speed of a vehicle by using the time taken to travel between the two set points placed on the road at a certain distance. A set point consists of a couple of sensors comprising an IR transmitter and an IR receiver, which are placed on either side of the road. The speed limit is set by the police who use the system depending on the traffic at each location.

The time taken by the vehicle to travel from one set point to the other is calculated by the control circuit. Based on the time that has elapsed between the two sensors, the control circuit calculates the speed and displays the result on a seven segment display. If a vehicle exceeds the speed limit between transmitter and receiver, then this system emanates a buzzing sound as an alarm and alerts the police.

The main purpose of this system is to develop a speed checker for highways using a microcontroller and to alert the traffic authorities in case of any speed violation. Many passengers and drivers, including commuters have lost their lives due to rash and rude driving on highways.

In olden days, for detecting rash driving, highway police used to target vehicles by using radar guns at the vehicle and would record their speeds. If a vehicle would exceed its speed, automatically the information would reach to the nearest police station for controlling the speed of the vehicle. Due to this system a lot of time would get wasted.

This proposed system consists of a power-supply block, microcontroller, IR sensors, Relays, Buzzer, Lamp and Displays. The entire system gets it power from the power-supply block and the microcontroller acts as the major component of the whole systems. IR sensors are placed on either side of the road, for detecting the speed limit of the vehicle. The microcontroller is programmed by using embedded C programming that calculates the time duration between two sensors, correspondingly gives the speed. If the speed limit exceeds then relay gets activated and the lamp gets ‘on’ while the buzzing sound gives indication to the police that the vehicle is crossing the speed limits  and displays the information on the LCD Display.

Until now we have seen about speed checker to detect rash driving on highways using 555 timer and microcontroller. By adding another advanced wireless technology, we can make the circuit to operate remotely to achieve an  efficient rash-driving  control system.

The proposed system comprises these components: power supply, 8051 microcontroller, speed sensors, relays, buzzer and lamp are a part of this project, which will check on rash driving by calculating the speed of a vehicle using the time taken to travel between the two set points at a stationary distance and as if the microcontroller is programmed by using Embedded C programming language in such a way that it transmits the data over a frequency of 2.4GHz to the central control room. The relays get activated and the buzzer sounds  as  an alarm for altering the police as well as the control room wirelessly giving  the status of the vehicles  (whether the vehicle is within limits or exceeding the speed limits), and then displaying the speed limits of the vehicle on the LCD Display.

The transmitted speed limit data are sent to the receiver section with the help of 2.4GHZ RF receiver module and compares with the speed limits programmed into the microcontroller using embedded C software. If the speed limit exceeds, it sends the data to the traffic police as well as to a control room. To know about the speed limit status of the vehicle, a lamp is used to indicate if the vehicle exceeds the speed limit and the status gets displayed on the LCD. In addition, the buzzing sound as an alarm alerts the traffic police patrolling on the highway indicating the vehicle’s location on highways.

This Speed checker’s concept to detect rash driving on highways can be further implemented by integrating a camera with the system to capture the image of the vehicle’s number plate and to send that information to the traffic authorities.

This is all about the different highway-speed-checker circuits that are used to detect rash driving on highways. To extend support to the engineering students, we have mentioned a project report ‘Speed-Checker for Highways’, which covers different types of technologies. For additional suggestions or help regarding this topic, you can contact us by commenting in the comment section given below.