RFID based Car Parking System is a simple project that offers an efficient car parking management system with the help of RFID Technology. Car parking management in organizations and malls often consists of many tasks like issuing tokens, noting the check-in and checkout time, calculating fare and finally collecting the amount. As the number of vehicles is increasing, the problems faced by a manual parking management system are also increasing. Such problems can be eliminated to some extent by implementing an intelligent parking system where the entry and exit of cars are monitored and payment is made easy with sensor technology. This project deals with an interesting manner of security access based car parking system using an AT89C51 microcontroller and RFID Technology.
As the nonsustainable power source assets are diminishing, utilization of inexhaustible assets for delivering power is expanding. Solar panels are winding up the more popular day by day. The solar panel retains the vitality from the Sun and is put away in the battery. This vitality can be used when required. Use of the vitality stored in the batteries is given in the below application. Solar panels must absorb solar energy to a maximum amount. This should be possible just if the panels are constantly put towards Sun bearing. So solar panel ought to persistently turn toward the Sun. This article depicts sun tracking solar panel and its working.
Solar energy is changed into a current by using PV (photovoltaic) cells. Throughout the daytime, the energy keep within the batteries is used to run the pump for agriculture. This project aims at developing a controlled charging mechanism providing protections for overcharge condition, deep discharge condition and below voltage state of the battery. This planned system is comprised of a solar water pump that reduces the utilization of inverters etc, so reducing the price of the project. Using the charge-controlled mechanism; the pump is operated at four totally different time slots. Difficulties like shifting the pump ON/OFF manually are overcome using this project.
There exists an intrinsic real clock (RTC) that keeps chasing the time and so switches ON/OFF the pump consequently. MOSFET’s are utilized by the charge controller as power semiconductor switches to confirm cutting off the load (DC Pump) in conditions like low battery or overload, while, the junction transistor is employed to bypass the solar power to a dummy load whereas the battery gets absolutely charged. So the battery is shielded from obtaining overcharged.
The solar-powered LED street light works on the principle of solar cells or PV cells to absorb the solar energy in the daytime. The PV cells convert solar energy into the electrical energy. The converted energy is stored in the battery and the solar street lights use solar energy. Nowadays solar street lights are available beside the roads. At the night time, the lamps start automatically and it uses the electrical energy which is stored in the battery. Every day this process continues.
At the present time, generally, attendance system in schools, colleges, etc is based on paper. So sometimes this procedure causes mistakes and also time taking process. So the proposed system uses RFID technologies to make a reminder of each student entering the classroom and also to analyze the time exist in the class. In this project, every student is selected with an RFID tag. The procedure of attendance can be done by insertion the card near the RFID reader. This article discusses what RFID is, and RFID based attendance system with an example project.
In daily life, there several types of accidents are occurring. Accidents may cause due to various reasons like brake failure, drunk, and drive, etc. Most of the accidents will occur due to over drunken drivers. In order to overcome this problem, this accident avoidance system project is implemented. This project uses an alcohol sensor which is used to sense the drunken person from 200ppm onwards. If the person is drunk, Firstly we check him whether he is dunked or not. Then, this module is placed in automobiles. If the driver is dunked then the sensor will detect the alcohol amount spent by the person and it will close by buzzing using a buzzer.
Thermal imaging device is a benefit to the armed forces like navy, army and air force because of its 24 hours working capability to perform well in all climate conditions. Thermal detectors capture the IR(Infrared) radiation produced by all objects above complete zero temperature. The temperature differences of the captured section are denoted as a hectogram. With the beginning of IR detector technology, the large cooled thermal detectors having moving parts and difficult cryogenic temperatures have changed into small, and less expensive uncooled microbolometers having no moving parts. Thermal imaging system due to its numerous advantages has various applications in the military and also defines.
It is widely used by the armed forces for border surveillance and law implementation. It is also used in ship accident avoidance and control systems. In the aviation industry, it seriously mitigates the dangers of flying in the night conditions. They are widely used in military flight to recognize, find and aim the enemy forces. Recently, they are also being merged in civil aviation for health checking of aircraft.
The term wireless RF stands for “wireless Radio Frequency Technology”. If you are just starting with radios, this article can help. It is proposed to give a basic understanding of radio frequency,as well work as a quick reference for those who “know their knowledge” but may be observed to brush up on that one place that they never quite understood. Radio frequency is a measurement signifying the oscillation rate of electromagnetic radio waves or electromagnetic radiation spectrum of frequencies ranging from 300 GHz to 9 kHz. With the use of transmitters and antennas, the radio frequency field can be used for several types of wireless communications.
The Bluetooth technology was implemented in the year 1994 by Jaap Haartsen and Sven Mattison. They were working in a mobile company called “Ericsson” which is located in Sweden. After this, five corporations came forward and combined to form the Bluetooth special interest group. Then they implemented the Bluetooth protocol design version 1.0 in the year 1999. It permitted to progress applications and communicating services over the interoperable radio modules and also data communication protocols. It was intended to give the information on the conditions, competencies and their architectures, a number of usage modules were recognized by the Bluetooth SIG.
What is a Bluetooth Device?
A Bluetooth is a high-speed, low powered wireless device that is intended to connect mobile phones or any other movable equipment together. It is an IEEE 802.15.1 specification for the use of low-power radio communications to connect various network devices, namely computers, mobile phones and also other network devices over small distances without using wires. The transmission of wireless signals can be done typically up to 10meters with Bluetooth over small distances.
It is attained by low-cost embedded transceivers into the devices. It supports on the 2.45GHz frequency band and can support up to 721KBps along with 3-voice channels. This frequency band has been fixed aside by international contract for the use of scientific, industrial, medical devices (ISM) and rd-compatible with 1.0 devices.Simultaneously, Bluetooth device can connect up to eight devices and each device gives a unique 48-bit address from the IEEE 802 standard with the point to point connections or multipoint which are being made.
How to Connect a Bluetooth with Other Devices
The following steps involve to knowing how to connect a Bluetooth with other devices
Turn Bluetooth ON/OFF
- Open the device’s settings
- Tap Bluetooth and ON/OFF the switch
- At the top of the mobile screen, a Bluetooth symbol shows when Bluetooth is switched ON
Note: To conserve battery, switch off Bluetooth option when you’re not using it.
Connect Bluetooth Device
To pair with a Bluetooth device, first switch ON your gadget’s Bluetooth. Before you can pair your device with any other Bluetooth enabled gadget, you must connect them. After you have connected the devices, in the future, you can automatically connect the devices when they are in the range of one another.
Unpair, or Change a Bluetooth Device Name
- If your Bluetooth devices have several connections, you can choose which connection to use.
- Your Bluetooth enabled gadget has a Bluetooth name that new devices see when you pair them via Bluetooth. You can change your Bluetooth device’s name.
- Open your Bluetooth enabled gadgets Settings
- Tap Bluetooth and Make sure Bluetooth is turned on.
- Next, to the connected device, you’d like to change, tap Settings
- On the mobile screen that opens, you can change the name of the device and pick profiles, or forget the device.
- Tap Rename the Bluetooth enabled device
- Enter a new name for your device and Tap Rename.
Why Bluetooth Connecting Fail
Bluetooth device mainly depends on both software and hardware to function properly. So if your gadgets can’t speak a common Bluetooth language, they won’t be able to pair.
In general, these devices support the standard Bluetooth 4.2, declared last year, should still be able to connect with devices using, say, the early Bluetooth 2.1, launched back in the year 2007.
The exceptions are devices that use a low energy version named Bluetooth Smart, which works on a variety protocol than older. Bluetooth enabled devices are not backward compatible and won’t pair with older devices that support Classic Bluetooth.
Bluetooth enabled devices that commonly use Bluetooth Smart comprise personal health gadgets like heart rate monitors, fitness bands, etc. These devices will only connect with a smartphone that also uses Bluetooth Smart or Bluetooth Smart Ready.
The devices also available with particular Bluetooth profiles. If Bluetooth is the mutual language for connecting devices, you can think of a profile as a dialect connected with a certain use. For example, you probably aren’t going to be capable of connecting a camera and a mouse because a camera doesn’t support the Human Interface Device Profile. But if both a mobile and a wireless headset support the Hands-Free Profile, you should be able to connect them.
However, if the connecting failure is a matter of consumer error, there are some steps you can fix Bluetooth pairing problems
- Make sure Bluetooth is Activated or Not
- Switch to Discoverable Mode.
- Delete a paired device from a phone and search for it
- Make sure the pairing devices are in near enough closeness to one another.
- Decide which combining process your device employs
- Charge up both pairing devices
- Stay away from the WiFi router
- Update the firmware of the hardware
- Power down likely interferes
- Get away from a 3.0 USB port
Advantages of Bluetooth Technology
- It eliminates radio interference problem by using a technique, namely “Speed Frequency Hopping”. This method employs 79-channels of the specific frequency band, with every device, retrieving the channel for only 625 microseconds, i.e. the Bluetooth device must toggle between transmitting & receiving data from one time period to another. This indicates the transmitters change frequencies 1,600 times every second, meaning that additional devices can make full use of an incomplete slice of the radio spectrum. This ensures that the interference won’t take place as each transmitter (TX) will be on different frequencies.
- The power consumption of the chip (consisting of the transceiver) is low, at about 0.3mW, which makes it possible for least use of battery life.
It assurances security at the bit level. The verification is controlled using a 128bit key.
It is possible to use a Bluetooth device for both transferring and verbal communication as this device can support data channels of up to 3 comparable voice channels.
It disables the limits of the line of sight and one-to-one communication as in another mode of wireless communications such as infrared.
Applications of Bluetooth
The applications of Bluetooth device include the following
- Cordless Desktop
- Ultimate headset
- Automatic synchronization
- Multimedia Transfer
This article gives the information about how to connect a Bluetooth with other devices, and applications. We hope that the above information given in this article is helpful in providing some good insights and understanding of the project. Furthermore, if you have any queries regarding this article or to implement Bluetooth based projects, you can comment in the below section. Here is a question for you – What are the different versions of Bluetooth?
In this tutorial, we going to discuss how can we interface a microcontroller with the Bluetooth technology. The Bluetooth will work with an Arduino board through the serial communication. The data is received to the Arduino with the HC-05 Bluetooth module through the serial communication and the LED’s will turn ON/OFF according to the receiving data. There are different types of Bluetooth modules are available in the market, but here we are using the HC-05 Bluetooth module because it is commonly used.