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Adaptive Wireless Solutions Ltd Company Overview. Adaptive Wireless Solutions. Specialists in monitoring and control solutions using wireless mesh sensor networks for over 8 years

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adaptive wireless solutions
Adaptive Wireless Solutions
  • Specialists in monitoring and control solutions using wireless mesh sensor networks for over 8 years
  • Offer systems integration and equipment supply for numerous wireless and wired technologies driven by customer requirements
  • Distributor for ECOMM and Wireless Sensors in UK and Europe
  • Certified System Partner for HMS Industrial Networks (Netbiter) in UK
  • Can help you integrate and manage your data gathering, monitoring and control activities
    • Complete solution design, supply and support
    • Wireless technology consulting and advice
    • Programme and project management
    • Technical and wireless architecture design
    • Equipment and software supply from multiple vendors
    • Integration with other systems
    • Installation and commissioning
    • Maintenance and Support
customers and projects
Customers and Projects
  • We have had enquiries and projects in BMS extension, energy management, industrial plants, IT environments, and related monitoring and control applications in a wide cross-section of industries from commercial offices, universities and colleges, hotels and apartment complexes to warehousing, recycling plants, food companies and national utilities.
  • Customers in UK, Ireland, Italy, Netherlands, Belgium, Hungary, Israel, Saudi Arabia


business advantages of mesh radio
Business Advantages of Mesh Radio

Up to 90% lower installed costs

Lower cost of required equipment and supplies

Much quicker installation = less on-site time and less disruption

Monitor and control in:

harsh environments (lots of metal and interference)

“wire unfriendly” situations where wires are difficult or undesirable

Low cost and speedy retrofit to existing buildings, equipment and processes

Monitors mobile or rotating equipment

Easy optimisation of sensor position in process for a better result

Cost-effective diagnostics in uncertain or temporary situations

Multiple sensor types with standard wireless nodes on a single network

Remote, ‘PC-less’, monitoring from anywhere on the internet

Economic and operational advantages vs. wired sensors

wireless network types


Mesh node

Sensing node

Wireless Network Types

Older, less flexible, less reliable technologies

  • Direct Connection
    • Wire replacement
    • Point to point, highly specific
    • Engineered to suit application
  • Star
    • One central routing and control point
    • Single-hop - point to multi-point
    • All data flows through central point
  • Mesh
    • Multiple data paths
    • Multi-hop
    • Can operate as star or hybrid star/mesh
    • Self configuring, self healing
    • Highly flexible, highly reliable

Newer, more flexible, more reliable technology

operational advantages of mesh
Operational Advantages of Mesh
  • Transmit Around Equipment
    • More robust
    • More flexible
  • Extend Network Range
    • More robust
    • More capable
  • Multiple Pathways
    • Stronger connectivity
    • Self-Healing, Self-Managing



Out of Range


ecomm direct integration with modbus meters
ECOMM direct integration with Modbus meters
  • The following electricity meter types are currently supported by direct integration via Modbus RS485 connection to the ECOMM WC21 radio unit
    • Schneider E 5600
    • Schneider ION 8600
    • Schneider PM 710/750
    • Schneider PM 9C
    • Schneider ION 6200
    • Carlo Gavazzi EM24
    • Veris H 8036
    • EIG Shark 100
    • Continental Controls Wattnode
  • Other meter types can be added as needed (at a modest cost)
solution architecture netbiter remote monitoring
Solution Architecture – Netbiter remote monitoring

Wireless range to cover large sites, highly reliable digital mesh radio, not affected by interference. Scales from 1 to 100’s of points. Netbiter transfers data off-site to Netbiter Argos remote monitoring portal. Web API available to integrate data to other applications

Remote off-site monitoring using Netbiter Argos

Netbiter is Modbus TCP proxy

Wireless mesh Gateway

Typical Sensors and I/O devices

Battery and/or line powered

Temperature sensor

Temperature and humidity

Occupancy, door contact


Pulse counting

Dry contact inputs

Up to 32 inputs per radio: contact, NTC, 0-5V, 0-20mA

Relay and analogue outputs

Multi-stage thermostat controller

Modbus RTU bridge

Although we specialise in mesh radio we also use

GSM/GPRS and Narrowband radio systems

when needed to meet customer requirements

application example westfield shopping mall bms integration for temperature control
Application example – Westfield Shopping Mall BMS integration for temperature control

55,000 Sq Metres on two floors with Atrium

49 Air handling units on roof

1 Wireless network

18 Mesh repeaters

30 Sensing nodes

Ambient Temperature input to HVAC zone controls via Modbus TCP

Installed in 2 days to resolve critical operating requirement

£6,100 equipment cost

application example large data centre monitoring solution
Application example – Large Data Centre Monitoring Solution




7,500 Sq Metres

4 Floors

Phase 1 - 2008

6 Wireless Sub-networks

22 Mesh repeaters

178 Sensing nodes

Ambient TRH

Phase 2 - 2009

100 additional TRH sensors on two floors

4 more wireless sub-networks

Phase 3 - 2010

Being planned now

Electrical Power

Chilled water

Floor 3

Floor 2

Control Room


Primary Server

Main Mission Critical Data Centre

Floor 1



Ethernet Network

Remote Business Continuity Centre

Secondary Server

Remote Disaster Recovery Centre

Secondary Console

bms scada integration
BMS / SCADA Integration
  • We have supplied systems to clients providing integration to existing BMS’ and SCADA / software systems via:
    • Modbus TCP and RTU
    • Direct analogue and digital connection
    • ODBC, OPC and SQL connection
  • BMS’ that have been integrated with our systems include:
    • Trend
    • Siemens
    • Schneider
    • Andover Controls/TAC
    • Honeywell
    • Priva
  • Numerous SCADA systems have also been integrated

Industrial Wireless Sensor Networks

Industrial WSN OEM Adoption Inhibitors

Source: ON World, Inc.


Building Automation Wireless Sensor Networks

Commercial Building WSN Adoption Inhibitors

Source: ON World, Inc.


Wireless Sensor Network Reliability

RF Interference

  • Common interference sources:
    • Multipath interference
      • Occurs when the RF signal interferes with itself
      • Reflections off surfaces of all types
      • Can interfere with original signal and even cancel it out
    • Interference with other transmitters
      • ISM band 2.4 Ghz wireless is increasingly common
      • Signals can be affected by other sources
      • Data slows down (more retries) or even stops
      • A good way to avoid it is to ‘frequency-hop’
  • Examples of other transmitters in the 2.4 GHz band can be WiFi nodes, microwaves, cordless phones, Bluetooth devices, RFID, and other wireless sensor networks.
  • How can it be avoided?


Signal strength





Wireless Sensor Network Reliability

Interference Avoidance

  • Typical methods:
    • Direct Sequence Spread Spectrum (DSSS) modulation
      • Part of the IEEE802.15.4 radio standard
      • Spreads the signal over a wider bandwidth
      • Reduces the chance of blocking the whole signal
    • Frequency-Hopping Spread Spectrum (FHSS) modulation
      • NOT part of the IEEE802.15.4 radio standard
      • Uses a range of base frequencies
      • Transmitter and receiver periodically hop to a new frequency
      • Acts more like a narrowband radio for very short intervals
      • Very unlikely that all channels in the band are interfered
    • Dynamic channel hopping
      • Not a modulation technique
      • Enhances simple FHSS modulation by dynamically detecting persistently busy channels and avoiding them
  • The best mesh radio systems use all three techniques

Wireless Sensor Network Protocols

How do they affect performance?

  • Two main options:
    • Carrier Sense Multiple Access
      • Collision-based protocol
      • Uses collision-avoidance (CA) or collision detection (CD)
      • Most WSN protocols use CA to avoid network overhead
      • Network communication is not time-synchronised
      • Pseudo-random ‘Back-off and re-try’ mechanisms are used
      • Collisions within the network escalate as networks get larger
      • ZigBee is based on this CSMA-CA approach
    • Time Synchronised Protocols
      • These minimise or avoid collisions and transmission re-tries
      • Time synchronisation allows the use of channel-hopping
      • TDMA (Time Division Multiple Access) is an example
      • Also called ‘slotted’ protocols because each device has a ‘time slot’
  • The benefits of synchronised traffic and channel-hopping are:
    • Better performance (fewer collisions/retries)
    • Increased battery life (fewer retries)
    • Better interference avoidance (channel-hopping)
  • The most sophisticated systems use adaptive dynamic channel-hopping
protocol standards


Application Interface

Network Layer

Data Link Layer

MAC Layer

MAC Layer

PHY Layer

IEE 802.15.4



Protocol Standards?
  • 802.15.4-based market offerings are differentiated by proprietary protocol stacks with different design goals
  • Network layers of the protocol
  • are not standardised
  • There are many trade-offs in protocol design
  • There is room for several feature-specific protocol variants using the IEEE 802.15.4 base standard
  • It is important that hardware remains 802.15.4 compliant
  • ‘Standard protocols’, if they ever become available, will not mean that proprietary protocols become obsolete or unnecessary.
  • ZigBee is not a standard and has serious reliability and performance limitations in industrial and commercial environments. ZigBee equipment from different vendors does not interoperate – one of the key goals of a standard.

Contact Details

Adaptive Wireless Solutions Ltd

91 High Street


Great Missenden

HP16 9ER

Tel:+44 (0) 1494 865992

Nick Baker


Mobile: 07968 352875

Skype: adaptivewireless