Advances in wireless rh measurement using Mesh topology

Transcription

1 Advances in wireless rh measurement using Mesh topology PTC Remote Management & Service Development and realization of made to measure wireless sensor and control solutions Michell Co-marked leader in RH sensor technology, products and solutions 1

2 Remote humidity measurement key issues Industriele vocht en temperatuur specificatie Volledig draadloos Beveiligde signaal overdracht 100% data reliable Mogelijkheid tot kalibratie op afstand Comtech Holdings Limited

3 Testen Temperatuur gevolgen Power supply 2,05V Rh output: 90% T = 23ºC Power supply 2,05V Rh output: 90% T = 0ºC Comtech Holdings Limited

4 Covered items: 1. Considerations before going wireless 2. Wireless technologies and topologies 3. Introduction wireless µmesh / ZigBee 4. Products case studies and fit products 5. Trends in sensor and process instrumentation 6. Effects pursued in (wireless) applications 7. Thialf trail and live umesh demo 4

5 Consideratons for Wireless Cutting cabling costs, spaghetti free => short ROI Stay connected while moving Scalability: add sensors automatically on the fly Networkable applications and integration Central data storage, aggregation and analyses Information presentation and sharing over the Internet 5

6 Evaluations prior going wireless Application aspects to consider : Quantities, accuracy, interval to be measured Sensor technology New, renovated, upgraded or extended Area where applied, environment, usage Security, reliability and redundancy Specific technical aspects to consider: Sensor(s) power consumption Sensor start/warm-up procedure Size and dimensions Environmental issues Sensor interfacing Data (pre)scaling and analyses 6

7 Wireless Network technologies Data Rate HQ-video WiFi HSDPA video Muni-Fi UWB UMTS Audio Bluetooth DECT GSM / GPRS Telemetrie ZigBee/µMesh 1m 10m 100m 1km 10km 100km 1000km Distance 7

8 Wireless Network typologies 8

9 µmesh/zigbee Topology Coordinator Node Router Node End Device Node Mesh Link Temporary Link All End Device and Router Nodes can have sensors 9

10 The µmesh concept Gateway Local Intranet World Wide Internet Office Netwerk 10

11 µmesh/zigbee features Self-forming and self-healing Mesh topology network Automatic multi-hop routing over nodes in the mesh network Highly scalable, on the fly (over 1000 nodes) Dense deployment and cooperative effort of sensor nodes Data pre-processing and data buffering inµmesh nodes Secure wireless data transfer through message encryption Node authentication using unique node ID authentication Heartbeat function, to confirm device liveliness 11

12 µmesh technicalities Fast synchronization less then 10ms Data rate of 250 kb/s (e.g. 19k2 baud rate) Ultra Low Power (<10uA) for battery powered applications (up to 4 yrs) 128 bit data encryption and authentication Transport layer guaranteeing delivery confirmation Pro-active route repair Hot transmission Channel Swapping, avoidance of interference Multiple antenna configurations 12

13 ZigBee / µmesh Stack SENSORS Hardware Application µmesh Embedded Software Application Framework Network/Security ZigBee ZigBee is an open world wide standard specific for cost-effective, low-power reliable, wireless sensor networks. Open standard: IEEE Layer Stack Hardware MAC Layer PHY Layer ether 13

14 Miniaturisation for wireless sensors 14

15 µmesh products PTC Remote Management & Service Comtech Holdings Limited MNI - 18 Sept

16 Trends in sensor and process instrumentation Trends in sensoring From off-line to on-line From wired to (battery powered) wireless From battery powered to energy harvested supply From diagnostic to predictive From in-line to clamp-on Driving wireless sensor applications For monitoring of conditions For replacement of old equipment For installation in existing environments Temporary measurement and cause analyses Moving objects (auto re-connect) 16

17 Effects pursued in wirelss applications Improvement of data exchange that brings: Improvement of internal and external processes Increased productivity (intelligent asset management) Cost savings (cutting cabling costs) More and better services to End Client ease of mind Stronger position in own vertical market. 17

18 Thialf embedded ice temp measurement µmesh Wireless Node Demo on: umesh.ptcrms.nl 18

19 Thanks for your attention Wessel Koning Technical Director, PTC Remote Management & Service Arthur Scheffer Commercieel Manager, Michell Instuments NL 19