Underwater Energy Harvesting Enabled Smart Sensor Networks for Water Industry

该项目将开发，生产和测试一种可行的，面向未来的电池更换能量收集（EH）系统，用于饮用水监测应用。像所有的水供应商，塞文特伦特水（STW）必须符合Ofwat的不断减少漏水的目标。定期监测水流量和压力可识别新的泄漏，STW用于每天两次传输流量和压力数据。为了保持合规性，STW最近更换了管道系统上的10，000多个电池供电的记录仪。新的记录仪每天传输48次。在这个水平上，电池持续5年。电池上80%的消耗是GPRS数据传输。STW每5年更换电池的成本为200万英镑，整个英国水为2000万英镑 *。对于EH系统来说，有一个非常明确的要求，即能够维持当前的数据传输水平，并且随着泄漏目标的收紧，也能维持更高的水平。为了给自来水公司实现合理的节约，EH系统必须至少使用15年。在此期间，泄漏检测目标将下降两次，因此系统必须能够支持更大的系统需求。

This project will develop, produce and test a viable, future-proofed battery replacement Energy Harvest (EH) system for potable water monitoring applications. Like all water providers, Severn Trent Water (STW) must be compliant with Ofwat’s ever-reducing water leakage target. Regular monitoring of water flow and pressure identifies new leaks, STW used to transmit flow and pressure data twice per day. To maintain compliance STW has recently replaced 10,000+ battery powered loggers on their pipe system. The new loggers transmit 48 times per day. At this level, the batteries last 5 years. 80% of the drain on the battery is the GPRS transmission of data. The replacement cost of batteries every 5 years is £2 million for STW, £20 million for UK water as a whole*. There exists a very clear imperative for an EH system capable of sustaining the current level of data transmissions and higher levels too as leakage targets tighten. To achieve a sensible saving for water companies, the EH system must last a minimum of 15 years in service. Leak detection targets will fall twice in this period, so the system must be capable of supporting the greater system demand.