Presentation on theme: "Roy Freeland President, Perpetuum Ltd"— Presentation transcript:
1 Roy Freeland President, Perpetuum Ltd Chair ISA Power Sources Working Group.Chair UK Government Energy Harvesting S.I.GEU Zeropower Scientific Advisory Committee
2 Standards for WSN Power Sources International Society for Automation ISA100 Family of Standards for Industrial WSN’s a Wireless StandardISA Power Sources Working GroupKey objectives areDefine specifications for the interchangeability of power sourcesUse cases in range 0.1mW to 30mWIncluding batteries, energy harvesters, and other power sourcesDefine performance specifications to facilitate comparison and selection of optimum power sources for application.Cooperating with a range of organizationsVDI on battery standards for WSNsOther organizations using (e.g. WirelessHART, Zigbee)“Metrology for Energy Harvesting “project (EU funded European Metrology Research Programme (EMRP))
3 No Single Harvester is Universal Solution Easy choice of Power Source is neededLeading wireless instrumentation suppliers have chosen universal systemGeneric Energy Harvester Adapter Module – GEHAMEnables Plug and Play Interchangeability:Vibration HarvesterThermal Harvester24V DC
4 Battery Pack to IPM Wide range of input voltage levels: 8V – 24V. Standard OEM Battery ModuleGEHAM CircuitIntegrate GEHAM intoOEM Battery ModuleIntelligent Power Module (IPM)Wide range of input voltage levels: 8V – 24V.Integrated robust capacitive storage for duty cycleIntelligent Power Management circuitryHazardous Zone 0, Class 1 Division 1Same form, fit & function as original OEM battery moduleReduce or eliminate battery change costs & logisticsAdd energy harvesting now or later
5 Example GEHAM: Emerson IPM Emerson Intelligent Power Module acceptsPerpetuum Vibration HarvesterMicropelt Thermal HarvesterPerpetua Thermal Harvester24V DCOthers to be addedATEX, IECEx, FM approved(Not all power sources)
7 Honeywell Power Module Battery pack - regulated external power inputInternal harvester energy storageReplaces the standard IS Battery Pack in a Honeywell XYR 6000 transmitterAccepts external harvester power up to 20VBatteries only necessary for network joiningInternal capacitance power for normal radio transmissionsWith Perpetuum Energy Harvester on a suitable vibration sourceExtend battery life >10years4 second transmitter repetition rateATEX, IECEx, FM approved•
8 Rapid growth in EH powered WSN’s Wireless Sensor Nodes deployed in many new applicationsTrain bearings – many thousands being monitoredEH powered self contained WSNHarvesterARM processorRF transmitterLive bearing data availableDisplayed over InternetPowerful business caseOn demand maintenance
10 Performance Standards End Users want to know if Harvester will “work” in their plantWill not knowHow much power neededWhat energy sources available (heat, vibration etc..)Characteristics of energy sourcePerformance Standard needs to help selectHarvester Type (Thermal. Vibration etc.) – this problem being solved by GEHAMWhich Thermal/other Harvester will give best power output in particular or all applicationsSo - Easy Task!!!
11 Vibration Harvesters Issues Performance depends on many variablesType of vibrationSinusoidal fixed /sinusoidal variable/ stochastic/ variable/multi frequency/ otherMagnitude (g)Nominal Frequency/FrequenciesVariation in FrequencyDuring operationFrom one machine to anotherReference test conditions typical of practical applications (also applies to other harvesters)Measurement of output :Time to charge energy storageOutput achieved through GEHAM
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