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Advantages and Disadvantages of Sensorīelow are some of the advantages and disadvantages explained. The performance of digital and analog is compared where the accuracy of a digital sensor is high and represents the measurand with several bits used. The accurate value is increased by slot increment in the disc and it allows more setup of slot simultaneously. Then the input is displayed on the speed and rotations of the disc. The light sensor extracts the absence or presence of the light and gives logic 1 and 0 signals corresponding to the input. The disc is connected to the motor’s shaft with a finite number of visible slots. The light sensor is used to calculate the speed and generates a digital signal. The switch has two possible conditions when pushed its ON, and when released it’s in OFF state. The push-button acts as a digital sensor. The digital sensors generate discrete signals in digital.c The output of this sensor has ON and OFF states with the logic of 1 and 0. The finite count that is measured like temperature, speed, strain, pressure are analog quantities and occurs continuously in nature. The voltage is the output signal and is directly proportional to the measurand. The analog sensors give uninterrupted varying output waves with a set of values. The loudspeaker gets the output wave from the actuator where the electric waves from the amplifier are again converted to sound waves with more reach. Then its fed to the amplifier where the electric waves are given strength and amplified then fed to the loudspeaker. Here the sensor is used as an input function to the microphone which senses the sound waves and converts it to electric signals. The system consists of a microphone, loudspeaker, and amplifier. The sensor deployed in the public operating system was discussed here. The working and usage of sensors vary from device to device according to the demand. The thermocouple is an example of a passive sensor. Here the current passed is called the excitation signal. The resistance is calculated by passing a current through it. The example of an active sensor is strain gauge which doesn’t generate its output signal but calculates the volume of applied pressure related to the resistance of the system. Passive sensors: It directly give the output signal in corresponds to input messages.This signal which is fed is called an excitation signal and it produced the required output. Active sensors: Its work is based on power or signal from an external source.The sensors are classified based on the requirement as Active and Passive sensors. Ultraviolet sensors and photostability sensors: They are used to detect UV p germicidal UV detectors, phototubes, and ultraviolet light detectors.Touch-sensitive sensors: They are used in resistive and capacitive touch sensors.Force sensor: It is applied in strain gauge and load cells.
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Temperature sensors: They are employed in thermocouple, thermistors, and thermostats.Light sensor: These are applied in the photodiode, light-dependent resistor, and phototransistor.Then various sensors applied in this field are inductivity proximity sensors, optical encoders, eddy current proximity sensors, pneumatic sensors and hall effect sensors The sensors which are used to measure the distance is a potentiometer. The classification of sensor based on their different application is made as follows: The above mentioned are some form of input that can also be converted to another form of output as required and noted and studied for future technologies. Optical signals to be measured are wave velocity, absorption, refractive index, wave, and emissivity. Location, force, acceleration, pressure, volume, structure, rigidity, torque, momentum, stress and strain values, density and compliance are the mechanical form of inputs to be noted.Thermal: Terms to be measured are specific heat, thermal conductivity, and temperature.Agnetic: Inputs that to be calibrated are permeability, magnetic field, flux intensity.Electric: Inputs which are to be measured are current, voltage, electric field, conductivity, and permittivity.Acoustic: Inputs are measured by the wave, wavelength, velocity of the wave and spectrum.
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