IR SENSORS An infrared sensor is an electronic instrument which is used to sense certain characteristics of its surroundings by either emitting and/or detecting infrared radiation. Infrared sensors are also capable of measuring the heat being emitted by an object and detecting motion. Infrared waves are not visible to the human eye. In the electromagnetic spectrum, infrared radiation can be found between the visible and microwave regions. The infrared waves typically have wavelengths between 0.75 and 1000µm.
Sensors are the input devices of the robots which provide information about the external environment that what is happening and act accordingly. This information might be any color, quantity of light, distance of an object or it can be temperature etc. There are also different types of sensors like light sensor, IR sensor and Temperature sensor etc. which are used depending on the type of information. Motors are the output devices in the robots which let the robot move according to the program encoded.
Instead, infrared monitors use IR emitters and receivers to create an invisible grid of light beams across the screen. This ensures the best possible image quality. When an object interrupts the invisible infrared light beam, the sensors are able to locate the touch point. Infrared touch screen monitors do not overlay the display with an additional screen or screen sandwich. Instead, infrared monitors use IR emitters and receivers to create an invisible grid of light beams across the screen.
It is a reflective type IR sensor which is working on 950nm range of light. IR detector is also inbuilt in this IR sensor. It provides fluctuation of pulses in MV range. The second parameter that we have calculated is body temperature by using a 10k NTC thermistor. This works with a principal of temperature and resistance relationship.
1) Moving Object Detection It is the low-level application for video surveillance system. The object detection system consists of two major components: 1)Background modeling;2) Motion/Object segmentation. Background modeling is the representation of the scene without moving objects and must be regularly updated. Motion segmentation aims at detecting regions corresponding to moving objects such as humans or vehicles. Knowing the exact number of persons in a building can be critical for the success of business or rescue operations.
The pollution sensor can send the level of pollution and filter the pollution air which to reduce the carbon monoxide and those polluted air to destroy the nature. It is also important for the emergency services in public. Thus, reformative the traffic flow can make the service respond faster and potency. The sensor in the traffic will also sense where the incident and send the data to respective center other than waiting for citizen make a call to
INFRARED SPECTROSCOPY: Definition: It is defined as the spectroscopy that is concerned with the infrared region of electromagnetic energy spectrum. As the name suggests, this type of spectroscopy is used to study the interaction of light of low wavelength with matter. IR spectroscopy deals with the vibrational energy of atoms, and thus determines the functional groups. Theory: An infrared spectrum is obtained when infrared light passes through the given sample, and finds out the amount of incident radiation absorbed by the sample. Infrared light directly does not cause electrons to shift to higher energy states , but it has enough energy to undergo interaction with a molecule and alter its vibration and rotation.
Electronic senses to touch us all Dr. S. S. Verma, Department of Physics, S.L.I.E.T., Longowal, Distt.-Sangrur (Punjab)-148106. Development and use of electronic devices from day to day life activities of human to its industrial & business applications have already revolutionized our world. Besides, electronic devices/sensors are being developed to work at par with the functions of human sense organs. Human has in general five sense qualities like touch, taste, smell, hear, vision and the whole actions of human body are controlled on the basis of electric signals through their respective body parts as: skin, tongue, nose, ear and eye. Electronic development has progressed well to replicate these sense functions with electronic devices/sensors called: e-skin, e-tongue, e-nose, hearing aids and electronic-eye.