WIRELESS DATA TERMINAL : DATA TERMINAL
Wireless Data Terminal : How To Strengthen Wireless Connection.
Wireless Data Terminal
- A service that allows you to send digital data over a cellular phone. Analog phones require a cellular modem; digital phones do not. Not offered by all providers.
- Describes a service that allows users to use their mobile device to transfer data across the TELUS Mobility network.
- The end of a railroad or other transport route, or a station at such a point
- An end or extremity of something, in particular
- of or relating to or situated at the ends of a delivery route; "freight pickup is a terminal service"; "terminal charges"
- a contact on an electrical device (such as a battery) at which electric current enters or leaves
- station where transport vehicles load or unload passengers or goods
- A departure and arrival building for air passengers at an airport
N.Harinath Raju- Ramnagar, Hyderabad, India
ASYNCHRONOUS WIRELESS DATA LINK
There are some situations where the data from different sensors is to be monitored and transmitted to monitoring device or a PC. While at some environments the wire
can not be run from the sensor to the monitoring device. In these situations wireless transmissions would be more beneficial. Most of the sensor units need a less amount of data furthermore, transmitted baud rate required is also slow. Since this seems to be a simple data link the efficient alternative is ‘WIRELESS ASYNCHRONOUS DATA LINK’(LOW SPEED). Not only the above industrial application but also the same idea can be implemented for point to point connection of computers in a
workplace or building. This project is expected to yield a Schmart PCB module; which would find applications in many areas. The goal of the project design is simple and easy to implement. Asynchronous
communication and RS232,--- ; since RS232 Interface is widely used and easily compatible /programmable with data terminal equipment, it’s been chosen the RS232 interface for the serial communication of data between DTE and DCE. The signals emanating from the RS232 have been conditioned by Encoder; Then after it needs to be fed to the UHF Transmitter on a single chip. Transmitter employs ASK Modulation and the frequency for transmission is 433.92MHz.
In the Realm of Geedom - DAQ Panel 2
Hardware Geekiness: A data acquisition panel I designed around Obvius modbus DAQ hardware. Here, the mounting and wiring is complete - just need to label and mount into the enclosure. Using 2 - Obvius 3-phase demand/consupmtion meters, DC power supplies, DC Hall effect current transducers, CR Magnetics 4-20 mA DC voltage transducers (proportional to 0-150 VDC input), Obvius 4 input analog input module and Obvius Modhopper wireless transceiver. Ancillary components include Entreloc terminal blocks, DIN rail, circuit breakers and on/off switch with courtesy duplex outlet.
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