Product category:
Telemetry, data acquisition + loggers
News Release from: Tai Feng Yuan Meters | Subject: WIRR
Edited by the Processingtalk Editorial
Team on 30 May 2005
Advanced wireless intelligent routing
relay
This article describes the detailed principle of advanced wireless intelligent routing technology, its structure, and the functions of the consequent wireless data relay transmission system available
This article from Benny Chueng describes detailed principle of an advanced wireless intelligent routing technology, the structure and functions of a wireless data relay transmission system Unlimited application environment, special operation modes and a high power battery with long life and high performance make the system widely usable in different fields
This article was originally published on Processingtalk on 16 Jan 2007 at 8.00am (UK)
Related stories
Wireless metering system for cold water meters
During the Summer of 2006, a wireless metering system based on WIRR (Wireless Intelligent Routing Relay) technology from Tai Feng Yuan has been operated successfully on a trial site in China
Water meter reading and wireless transmission
In a first application of the new Optical Direct Reading Sensor (ODRS) a classical water meter reading is transmitted electronically using Wireless Intelligent Routing Technology (WIRR)
For sensing devices which are installed in a remote environment (mountain, island, forest, mine, tunnel,desert, swamp, grassplot or cities with high building and dense residents, suburb and countryside with distributed inhabitants etc), the main solution to transport collected data and control signals remotely have been optical fiber, microwave and satellite which will cost quite a lot in equipment, maintenance and renting of leased lines etc.
What the network operators are mainly focusing on is how to transmit data to the management centre remotely, quickly and reliably with lowest cost: the operation battery shall have a lifetime as long as possible, and, at the same time, operators should have the ability to control sensing devices remotely.
Advanced wireless intelligent routing relay technology provides the perfect solution for such requirements.
Further reading
Prepay utility meters remotely managed by GSM SMS
In developing and underdeveloped countries, a new dual display prepayment utility meter system, remotely managed by GSM SMS, solves many of the normally faced commercial problems
Meter reading and automated wireless transmission
An explanation describing the application of Optical Direct-Reading Sensors and Wireless Intelligent Routing Technology in consumption meters, using an Automated Meter Reading System (AMR)
Intelligent optic direct-reading sensor technology
Intelligent optic direct-reading sensor patent technology: an introduction to its applications in monitoring mechanical consumption meters for simpler automated measurement recording
The principle of Wireless Intelligent Routing Relay (WIRR) Technology means that wireless data communicates in the way of relay transmission to expand the covered range and distance without increasing the transmit power.
In a wireless vector network, each node has the function of a transceiver, operates in duplex mode at the same frequency and has a unique address in the network.
According to field strength and sensitivity where the node is placed, the node manager intelligently appoints the relay node in each planar network and a master relay node of the whole network, and automatically configures an optimised route for data transfer between different relay nodes, relay node and master relay node; and the node manager also automatically configures an optimised route to form a cell for data transmission between any relay node and the other nodes in same planar network.
Such routing tables are stored in the node manager.
When one node cannot communicate with another, it will search for a suitable relay node according to the routing tables to reach the target node after passing the data through several relay transfers by relay nodes.
There is no fixed relay node, any one node in a wireless vector network can be used as a relay node only limited by field strength and sensitivity according to its location.
The master relay node is responsible for data transfer between relay nodes of different planar networks and the node manager, also for data communication within nodes in same planar network with it; the relay node is responsible for data transfer between the master relay node and other relay nodes, also for data communication within nodes in same planar network with it.
01 to 12 are the unique addresses of wireless nodes and 99 is the unique address of the node manager.
When communication starts, the node manager will appoint 01 as master relay node and also relay node of the planar network A, 08 and 09 as relay node of planar network B and C according to field strength and sensitivity; the node manager intelligently configures the path of the optimised route for data transfer between relay nodes and the node manager.
Data from each wireless node is transmitted to the relay node belonging to its plan network first, then transferred by relay nodes in different plan network and master relay nodes to realize data relay transmission.
The wireless node is only powered-up during operation and powered-down at any other time, the special operation mode saves power and extends lifetime of battery till 5-10 years using optimised operation sequences.
Thinking about security and reliability of data transfer, node manager can appoint standby node for master relay node and relay node.
When any relay node fails, node manager will transfer all job of fault node to standby relay node to guarantee reliability and security of link.
WIRR system is made up by.
* Wireless Node or Wireless Relay Node (WN or WRN).
* Local Area Node Manager (LANM).
* Wide Local Area Node Manager (WLANM).
* Handhold Reader (HHR).
* Network Management System (NMS).
WN (or WRN).
AWLANM and HHR work at frequency of 315, 433, 868 and 915MHz optionally or band of 300-1000MHz which can be programmable in steps of 250Hz with mW of transmitting level.
The flexible choice of operation frequency and low transmitting level will not have any influence on other equipment operated in the same frequency or band and operators are not required to apply for permission.
Through standard interface RS485, RS232 and TTL (optional), the WN is connected to the remote sensing devices.
The power for the WN is supplied by a built-in high performance battery.
All WNs are only powered-up during operation and powered-off after operation; a logical operating sequence and optimized routing tables keep power consumption of WNs at the lowest level (mA) during power-up because the radio module within the WNs uses advanced micro power IC.
All these techniques guarantee that the built-in battery can work for 5 to 10 years without replacement.
The internal clock of the WNs is synchronised to LANM.
Any WN can be used as WRRN depending on field strength and sensitivity where it is installed in wireless network.
LANM is responsible for managing the WNs.
LANM implements operations of wake-up, reading and power-down on all its WNs according to preset time from WLANM or orders from NMS, stores reading data into memory and transmit them remotely according to preset time from WLANM or orders from NMS; LANM can also transfer all stored data to HHR at an order from HHR.
LANM works continuously and power supplied by rechargable Li battery.
Because of lowest power consumption during operation, the operator can charge battery after some operation period which will not increase cost greatly.
LNAM is synchronised with a clock from NMS in real time.
WLANM is responsible for managing LANMs.
WLANM send orders of reading and upload of data on all its LANMs according to preset time or orders from NMS, stores all reading data into memory and transmit them remotely according to preset time or orders from NMS through different transmission platforms; WLANM can also transfer all stored data to HHR under the order from HHR.
WLANM works continuously and power supplied by recharged Li battery.
Because of lowest power consumption during operation, the operator can charge battery after some operation period.
WLNAM is synchronised with clock from NMS in real time.
WLANM has standard external interface and wide area address; it can transmit stored data to NMS through different transmission platforms (PSTN/GPRS/CDMA/Sat c) or receive any orders of reading, controlling and inquiry from NMS remotely.
HHR is actually one removable WLANM with screen and has same functions as WALNM.
The operators can use it very easily to make initialisation during installation and fault checking for single device during operation; the operators can also use it in such fields where there are not any known transmission platform to read data (just data stored in LANM or WLANM) by manpower, bring it back to centre and processed by NMS.
HHR is powered by rechargeable built-in battery.
NMS manages all WLANMs and send orders of reading, controlling and upload of data to WLANMs through different transmission platforms.
NMS provide sole clock for synchronisation of all network elements to guarantee uniqueness of network clock.
NMS also processes the data it receives and processing procedure can be decided by different operators according to different requirements.
Further applications are in a wireless AMR system for electricity, water and gas metering.
Concentrated management for meters on transformers in power fields for transformers distributed in wide area, WNs are installed on meter of transformer, and LANM or WLANM are set up according to different area to realize remote and concentrated management for all transformers.
For pipeline of gas and oil measurement, WNs are installed and connected to other equipment through standard interfaces in each pressure station, LANM or WLANM are set up according to different area.
Data in each pressure station can be uploaded according to preset time by LANM or WLANM; the management centre can also send orders of data upload or controlling signals to each pressure station through LANM or WLANM.
The high performance battery (5-10 years of lifetime) makes passive pressure station possible.
Intelligent management of lights in cities and highways for energy saving is then possible.
WNs are installed in each light in streets of cities and highway, LANM or WLANM manage the timing for switch on or off of lights to save energy.
The time of switch on or off can be preset by LANM or WLANM or controlled by central management office.
Remote management of oil and gas stations is possible.
WNs are installed at each station and LANM or WLANM is distributed according to area management.
Data can be reported to central management office through preset time of LANM or WLANM or orders from central office to manage energy consumption at each station exactly and at real time, to predict future consumption to use the energy resource logically and scientifically.
Because of the high performance of the battery (5-10 years of operation period) and instantaneous operation mode without any sparks, this system can guarantee the security of stations and also save cost of management.
Security of Saps in a mine is also envisaged: in order to guarantee security of saps within a mine, different sensing devices of pressure and gas must upload data collected to the ground management centre exactly and at real time and will not permitted to make sparks during data collecting.
WNs are connected to all sensors through standard interface and LANM or WLANM is set up to structure of different saps.
Data can be uploaded through preset time of LANM or WLANM or orders from NMS.
Because of the high performance of the battery (5-10 years of operation period) instantaneous operation mode without any sparks, this system can guarantee the security of saps in a mine and also save cost of management.
In a word, advanced WIRR technology solves all the problems existing in data collecting and remote transmission for sensing devices installed in special environments.
The special operational mode guarantees the built-in battery will work till 5-10 years, enabling the reduction of the cost of operation and maintenance.
It provides a perfect solution of wireless data remote transmission for operators.
• Tai Feng Yuan Meters: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
Search the Pro-Talk network of sites
