The biometric is a technology of measuring, science and it analyze the biological data. In the modern communications approximately it has accessible electronically, users of computer technology, it has increment in electronic services and with the security system. It improves in the election system with the help of new technologies in voting process. The information about election data is stored, recorded and processed the above information as a digital information. In olden days the information security is with the help of military and instructions of the government. The human body characteristic like DNA, fingerprints, voice patterns and hand measurements is used for authentication purpose. The e-services and information security are making sure that data, communication, have the security and privacy enable.
The electricity theft has appeared as a major problem in power divisions in particular in the expanding countries. A vast amount of income is lost due to this theft. In some nations this is so strict that governments are acquiring losses instead of income. In some cases government has to supply subsidies to the power division to keep a reasonable price of power. The economic loss results in lack of funds for savings to develop the existing capacity of electricity.
As a result government has not succeeded to assure the ever rising demand of electricity. Robbery electricity, avoiding a meter, billing wrongdoings and not paid bills. Billing irregularity comprises wrong meter reading taken by bribed service man. Different technical and non technical techniques were projected in the past to notice electricity stealing. Some of the technical methods to identify pilferage are utilize of central observer meter on harmonic generator, secondary terminals of distribution transformer, extreme learning machine, genetic support vector machines & a power line impedance technique.
In general, controlling of the home appliances can be done by normal switches. But, these days we frequently see the home automation for controlling the appliances using several technologies. This article presents the DTMF based load control system. DTMF is a signaling system for recognizing the inputs on a keypad. It is used in signaling for telecommunication over analog telephone lines in the voice frequency band among telephone handsets and communication devices. This Article discusses about DTMF based load control system.
The Biosensor is used to detect the analyte so the Biosensor is an analytical device and it gathers the biological components with a Physicochemical detector. The sensing biological elements are biometric components interact with the recognize and analyze the study and the components like tissue, microorganisms, antibodies, nucleic acids and etc. The sensitive elements of biological can also generate by the biological engineering. The detector elements transform the signals from the interface of analyte with the biochemical elements into other signals like transducer and it can be measured more easily and qualified. The Biosensor devices are associated with the electronics and the signal processors and they are generally responsible for the display of the results and they are user-friendly. The Biosensor research has a significant role in the development of modern electronics. This article discusses about different types of Biosensors working and applications.
The servo motor is most commonly used for high technology devices in the industrial application like automation technology. It is a self contained electrical device, that rotate parts of a machine with high efficiency and great precision. The output shaft of this motor can be moved to a particular angle. Servo motors are mainly used in home electronics, toys, cars, airplanes, etc.This article discusses about what is a servo motor, servo motor working, servo motor types and its applications.
Types of Servo Motor
Servo motors are classified into different types based on their application, such as AC servo motor, DC servo motor, brushless DC servo motor, positional rotation, continuous rotation and linear servo motor etc. Typical servo motors comprise of three wires namely, power control and ground. The shape and size of these motors depend on their applications. RC servo motor is the most common type of servo motor used in hobby applications, robotics due to their simplicity, affordability and reliability of control by microprocessors.
DC Servo Motor
The motor which is used as a DC servo motor generally have a separate DC source in the field of winding & armature winding. The control can be archived either by controlling the armature current or field current. Field control includes some particular advantages over armature control. In the same way armature control includes some advantages over field control. Based on the applications the control should be applied to the DC servo motor. DC servo motor provides very accurate and also fast respond to start or stop command signals due to the low armature inductive reactance. DC servo motors are used in similar equipments and computerized numerically controlled machines.
AC Servo Motor
AC servo motor is an AC motor that includes encoder is used with controllers for giving closed loop control and feedback. This motor can be placed to high accuracy and also controlled precisely as compulsory for the applications. Frequently these motors have higher designs of tolerance or better bearings and some simple designs also use higher voltages in order to accomplish greater torque. Applications of an AC motor mainly involve in automation, robotics, CNC machinery, and other applications a high level of precision and needful versatility.
Positional Rotation Servo Motor
Positional rotation servo motor is a most common type of servo motor. The shaft’s o/p rotates in about 180o. It includes physical stops located in the gear mechanism to stop turning outside these limits to guard the rotation sensor. These common servos involve in radio controlled water, radio controlled cars, aircraft, robots, toys and many other applications.
Continuous Rotation Servo Motor
Continuous rotation servo motor is quite related to the common positional rotation servo motor, but it can go in any direction indefinitely. The control signal, rather than set the static position of the servo, is understood as the speed and direction of rotation. The range of potential commands sources the servo to rotate clockwise or anticlockwise as preferred, at changing speed, depending on the command signal. This type of motor is used in a radar dish if you are riding one on a robot or you can use one as a drive motor on a mobile robot.
Linear Servo Motor
Linear servo motor is also similar the positional rotation servo motor is discussed above, but with an extra gears to alter the o/p from circular to back-and-forth. These servo motors are not simple to find, but sometimes you can find them at hobby stores where they are used as actuators in higher model airplanes.
Servo Motor Working
A unique design for servo motors are proposed in controlling the robotics and for control applications. They are basically used to adjust the speed control at high torques and accurate positioning. Parts required are motor position sensor and a highly developed controller. These motors can be categorized according the servo motor controlled by servomechanism. If DC motor is controlled using this mechanism, then it is named as a DC servo motor. Servo motors are available in power ratings from fraction of a watt to 100 watts.The rotor of a servo motor is designed longer in length and smaller in diameter so that it has low inertia. To know more about this, please follow the link: Servo motor working principle and interfacing with 8051 microcontroller
Applications of Servo Motor
The servo motor is small and efficient, but serious to use in some applications like precise position control.This motor is controlled by a pulse width modulator signal. The applications of servo motors mainly involve in computers, robotics, toys, CD/DVD players, etc. These motors are extensively used in those applications where a particular task is to be done frequently in an exact manner.
- The servo motor is used in robotics to activate movements, giving the arm to its precise angle.
- The Servo motor is used to start, move and stop conveyor belts carrying the product along with many stages. For instance, product labeling, bottling and packaging
- The servo motor is built into the camera to correct a lens of the camera to improve out of focus images.
- The servo motor is used in robotic vehicle to control the robot wheels, producing plenty torque to move, start and stop the vehicle and control its speed.
- The servo motor is used in solar tracking system to correct the angle of the panel so that each solar panel stays to face the sun
The Servo motor is used in metal forming and cutting machines to provide specific motion control for milling machines
- The Servo motor is used in Textiles to control spinning and weaving machines, knitting machines and looms
- The Servo motor is used in automatic door openers to control the door in public places like supermarkets, hospitals and theatres
Thus, this is all about servo motor working, types and its applications. We hope that you have got a better understanding of this concept. Furthermore, any doubts regarding this article, or electrical and electronics projects please give your valuable suggestions by commenting in the comment section below.Here is a question for you, What is the main function of servo motor?
In nature, there are various electrical signals like analog, which means the time varying continuous signal. In such signals, the first quantity of the signal is a voltage, whereas the next quantity of the signal can be anything like pressure, force, temperature and light accelerations. Most of the microcontrollers available in the market are digital in nature. They can only recognize high or low-level input pins. For example, if the input is greater than 2.5 volts, then it will be treated as high, and if it is less than 2.5 volts, then it will be treated as low. So, we cannot directly measure voltage from microcontrollers. [Read more…]
The IC 555 timer was invented by “Signetic Corporation” and it was termed as SE or NE555 timer. Generally, it is a monolithic timing circuit that gives precise and highly stable delays of time or oscillation. These types of ICs are very cheap and reliable in cost when we compared with the OP-Amp applications in the same areas. These ICs are used as an astable and monostable multivibrators in digital logic probes, DC-DC converters, tachometers, analog frequency meters, voltage regulators, temperature controlled and measurement devices. The IC SE555 is used for where the temperature ranges from – 55°C to 125°C and the IC NE555 is used for where the temperature ranges from 0° to 70°C. [Read more…]
Nowadays, attend system in schools and colleges is generally based on paper. So sometimes this process causes errors and also takes more time. So this project uses RFID technology to make a note of every student entering into the classroom and also to calculate the time resides in the class. In this proposed system, every student is allotted with an RFID tag. The process of attendance can be done by placing the card near the RFID reader. This article discusses about what is RFID technology and attendance system using RFID with an example project.
This article discusses about some simple electronic circuits for beginners, which can be used in electronic circuits. These electronic circuits are used for simple electronic circuits projects, beginners, hobbyists and engineering students. The following simple circuits can be used as a mini project in engineering. But these circuits are not apt for final year projects. The following circuit comes under the category of the small, hobby, etc. These simple circuits are very essential for main projects. Because, major projects are designed with several combinations of electronic circuits. [Read more…]
The stethoscope is an electronic device used by the doctors in the medical field or in medical applications. This device is used to listen to the internal sound of a human body or an animal and BP in veins and arteries. Normally, stethoscope includes a round shaped resonator or chest piece and two tubes. Where, the resonator is placed on the chest and tubes are connected to the ears. These devices are also used for monitoring different small scale acoustic tasks and to check the scientific vacuum chambers.