Ultra-low power event-driven sensing

超低功耗事件驱动传感

• 批准号: 133527
• 金额: $ 8.87万
• 依托单位: SENSOR DRIVEN LTD
• 依托单位国家: 英国
• 项目类别: Feasibility Studies
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=133527
• 关键词: Ultra; low; power; event; driven

The instrumentation industry requires remote monitoring devices that continuously listen and consume minimal power. Devices may be listening as sensors, measuring physical parameters such as temperature, vibration or leakage, or they may be listening for remote control to wake up a device and trigger an action such as communicating data.However, always-on sensing draws continuous power, and therefore, in many situations, this kind of monitoring is not viable, as it would either require sensors to be wired into the mains, or frequent battery replacement.We recently developed an integrated circuit that listens to sensors continuously, using only the power from the sensor, enabling the rest of the electronics to be fully powered down. Batteries now no longer need replacing, as lifetimes of decades can be achieved. Currently the technology has a fixed threshold of 0.5V, which limits its use to a subset of sensors that produce signals of several volts and a subset of applications where a sensor wake up threshold of 0.5V is applicable.This project aims to further develop the wake up technology to address a much wider range of sensor applications. The project will reduce the threshold from 0.5V to 10mV and will also enable it to be tuned over a large range according to the application. We will design an ultra-low power (less than 10 nanowatt) configurable pre- amplifier to interface with the detector circuit, whilst still keeping all other circuitry powered off until an event occurs. This level of amplifier power consumption is smaller than the self-leakage from a small coin cell, so in practice will not reduce the lifetime of the sensor.This project will design and evaluate a prototype sensor device with low, variable trigger threshold and lifetime limited by battery self-leakage only. We will commercialise the technology through sensor manufacturers by providing modules to be incorporated within their devices.

仪器仪表行业需要能够持续监听且功耗最小的远程监控设备。设备可能作为传感器侦听，测量物理参数，如温度、振动或泄漏，或者它们可能侦听远程控制，以唤醒设备并触发诸如通信数据之类的动作。然而，始终在线的传感需要持续的电力，因此，在许多情况下，这种监测是不可用的，因为它要么需要将传感器连接到电源上，要么需要频繁更换电池。我们最近开发了一种集成电路，它可以连续监听传感器，只使用传感器的电源，使其他电子设备完全断电。电池现在不再需要更换，因为几十年的寿命可以实现。目前，该技术有一个固定的阈值0.5V，这限制了它的使用，仅适用于产生几伏信号的传感器子集和适用于0.5V传感器唤醒阈值的应用子集。该项目旨在进一步开发唤醒技术，以解决更广泛的传感器应用。该项目将把阈值从0.5V降低到10mV，并使其能够根据应用在大范围内调谐。我们将设计一个超低功耗（小于10纳瓦）可配置的前置放大器与探测器电路接口，同时仍然保持所有其他电路断电，直到事件发生。这种水平的放大器功耗比小型硬币电池的自漏要小，因此在实践中不会降低传感器的使用寿命。该项目将设计和评估一个原型传感器设备，具有低，可变触发阈值和寿命仅受电池自漏限制。我们将通过传感器制造商提供集成在其设备中的模块，使该技术商业化。