Essay On Telemetry

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Telemetry Telemetry is a communications process by which measurements are made and other data collected at remote or inaccessible points and transmitted to receiving equipment for monitoring. It is highly automated and usually done for monitoring monitoring environmental conditions or equipment parameters. The term telemetry commonly refers to wireless data transfer mechanisms (e.g., using radio, ultrasonic, or infrared systems). It also encompasses data transferred over other media such as a telephone or computer network, optical link or other wired communications. A set of measuring instruments, an encoder that translates instrument readings into analog or digital signals, a modulator, and a wireless transmitter with an antenna constitute a telemetry transmitter. A telemetry receiver consists of a set of radio-frequency ( RF) amplifiers, an antenna, a demodulator, and recording devices. A computer can be used to process and store received information. Uses: Telemetry is used with mobile robots, satellites, and space probes. It is used in manned spacecraft, such as the Space Shuttle, the International Space Station (ISS) and the Hubble Space Telescope (HST). To monitor the physical condition of astronauts and to ensure the maintenance of a proper working environment for them, telemetry is vital. Wireless Telemetry Systems make measurements at locations that may be distant, moving or dangerous - and deliver the result directly to you, inexpensively as useful information. Rotating Telemetry Systems, Measure And Control Things That Roll. They bring back data like temperature, pressure, torque or other information from a rotating object, such as a shaft, rotor or wheel wirelessly. Torque Telemetry Systems turn a difficult measureme... ... middle of paper ... ...ion. However the most common definition of digital communication consider both passband and baseband as digital transmission. Data that is transmitted can either be in digital form, for example originating from a data sources like computer etc. or it can be in analog form such as a video/audio signal which is then digitized into a bit-stream by using modulation techniques or source coding schemes like data compression and analog to digital conversion. The modern modulation techniques include pulse width and pulse code modulation. The codec equipment helps in carrying out the source coding and decoding work. Common examples of communication channels are optical fibers, copper wires, computer buses and wireless communication. The data that is to be transmitted is represented as an electromagnetic signal, for example infrared signals, electrical voltage, microwave etc.

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