BRADFORD UK
Project Management Vision (PMVision) Ltd are due to release a range of low power battery operated sensors specifically designed for the automotive market using the new Jennic microcontroller. The local hub is a Tracking unit / Serial PC interface to the PMVision range of ZigBee based products. The ZigBee temperature tag connects wirelessly to the hub.
The Hub Features include:
Wide voltage range. The PMBee has been designed to provide maximum
flexibility at the lowest cost and can therefore run from
7.6 to 38V DC, AC adaptor kit is available.
One serial port
Two Digitial I.O’s
Access to an SPI bus
Serial port mechanics can be configured to any connector type.
Case is IP67 rated.
The ZigBee temperature tag connects wirelessly to our hub.
Features
Wide temperature range
Can have hard coded temperatures or can be remotely
configurable.
No external power.
Report times can be ranged from 3 to 10 minutes to the hub.
Continually monitors external temperatures to set control limits and will report back immediately when temperature goes out of control.
Tight tolerance ± 2°C
Additional I/O.
ZigBee Background
ZigBee’s name comes from the zigzag dance that bees use to communicate the location of a pollen source. In a ZigBee network, messages find their way across nodes to a destination the way data traverses the Internet. Each installation requires a network coordinator to act as the host.
A ZigBee network may have as many as 65,536 peripherals. Each node may
operate in reduced function, which means transmitting periodic output from a sensor, or full function, in which the node acts as both a transmitter and receiver.
IEEE 802.15.4/ZigBee is intended as a specification for low-powered networks for such uses as wireless monitoring and control, security, motion detection, temperature and basic communications.
802.15.4 are part of the 802.15 wireless personal-area network effort at the IEEE. It is a simple (28K byte) packet-based radio protocol aimed at very low-cost, battery-operated widgets and sensors (whose batteries last years, not hours) that can intercommunicate and send low-bandwidth data to a centralized
PMVision Ltd
555 Leeds Rd
Idle, Bradford
West Yorkshire BD10 8JT UK
TEL: +44 (0)1787 469053 –
GSM: +44 (0)7789 815835
Email: roy@PMVision.co.uk
Web: www.PMVision.co.uk
