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A Wireless Data Telemetry System

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Telemetry System Introduction A Wireless Data Telemetry system that receives Temperature, Pressure, Motion Control, and Flow measurement data from a wireless transmitter and displays them on a monitor screen. The rational behind this project is to provide user with information regarding the sensors of petroleum field industry. The sensors that are used in the industry are Temperature, Pressure, Motion control, Flow Measurement and so on depending on the application required. The raw data is collected from these sensors digitized through microcontroller to make it useful and transmitted on the RF link through wireless transmitter.

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On the other hand, that is, at receiving side the same data is received, decoded with the help of microcontroller and displayed at the monitor to read it. The focus of the project was to design and build a wireless telemetry retrieval communication system that effectively communicates pertinent data using packets. High Level Design Our design consists of a microcontroller and several sensors mounted on field to gather information about the field environment and broadcast the information through a transmitter.

The information gathered is then encoded using a microcontroller and send through a transmitter.

At the receiver, we use another microcontroller to decode the received data packets and display the parameters on a monitor. Logical Structure Our design project consists of two major components, transmitting end and the receiving end. The wireless telemetry system is to design as a stand-alone system consisting devices that can be attached to any moving object such as in petroleum field during drilling to detect its pressure, and surrounding temperature. Figure 2. 1:Basic General Diagram of Transmitter Side Figure 2. 2: Basic General Diagram of the Receiver Side 2. 4Packet Format

The packet itself is composed of 30-bits, organized as in Figure1. 3 Tx-Packet. The first 1 byte is the synchronization signal or start byte. Then the data begins, and at the end of the information data, last two bytes are the error detection or cyclic check redundancy (CRC) and the last 1 byte is yet another stop byte. We found this to be exceptionally reliable, so we adopted it. At the receive end, the packet looks like figure Rx-Packet. Note that the first byte is 0x7E, and the entire packet is shifted right by 1 byte. Hence, we match up the packet with the 0x7f and 0x7e and then being taking the data from.

The decoding process takes each byte and converts them into 8-bits, and puts them back together appropriately. In our project, the application is either the gathering of data or the displaying of data. At the transmit side, the data is collected from the various sensors and placed in a buffer for encoding. At the receive side, the decoded data is processed at various levels. Some of the data is displayed directly to the Monitor. 0x7E Start ByteInformation Data 30-Bits2-Bytes CRC0x7F Stop Byte 0x7E Information Data 30-Bits2-Bytes CRC0x7F Tx-Packet Rx-Packet Figure 2. 3:Transmitter and Receiver Packet Format

Cite this A Wireless Data Telemetry System

A Wireless Data Telemetry System. (2018, Aug 03). Retrieved from https://graduateway.com/a-wireless-data-telemetry-system/

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