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The National Defense Advanced Research Projects Agency (DARPA)'s N-ZERO project hopes to keep other types of sensors physically and electromagnetically dormant, consuming about zero battery power until they are awakened by external triggers or stimuli.
Most sensors actively monitor the environment, which leads to continuous consumption of energy, making it only work for weeks, days, or even shorter. When special trigger signals are detected to wake up the circuit, the University of California research under the N-ZERO project will extend the working hours of remotely deployed communications and environmental sensors to years.
The primary goal of the project is to develop a sensor that can operate at near zero power consumption, when it detects a particular signal, it can generate a wake-up signal, such as a vehicle passing by or the generator turning on. The project hopes to make the sensors work with button batteries. You can grab one of these sensors and throw them away every 30 meters. When a good sensor is spread, once the vehicle passes, the sensor will sense it and let people know that an incident has occurred. This sensor is similar to the ultimate version of the seismic monitor and can sense the slight vibration of the earth.
In 2015, darpa provided US$1.8 million in funding to the Greater Davis campus. The school is cooperating with invenSense, a company that specializes in smart phone motion sensors such as gyroscopes and accelerators, in St. Louis, California. Darpa hopes to turn technology into practical applications. Such R&D cooperation can quickly transform chip designs into products so that the U.S. Department of Defense can apply them immediately after the project ends.
New technologies are expected to significantly increase the working hours of sensors. Existing low-power mobile phone sensors require 10 milliwatts of power, which is approximately a million times more than the power consumption of such sensors being developed by the University of California. Increase the power consumption of the developed sensor to only 10 nanowatts.
The project started at the end of 2015 and is currently in the first phase of three phases. Each stage requires its own 12 months or so. At the end of 2016, after the first phase of the project, the University of California will develop an extremely low-power accelerometer and microphone. The Lincoln Laboratory at MIT will conduct an independent assessment.
To successfully complete the first phase, researchers need to prove that once the new sensor is placed in a quiet environment, it can quickly identify the pressure transmitted by the vehicle. In the first phase of the project, no sensor is required to distinguish the type of vehicle, but in the second phase, the sensor needs to have the ability to distinguish the vehicle type.
Researchers believe that in the near future, ultra-low-power remote sensors can be triggered by events other than surface noise. For example, the microphone always works and listens to specific words. With such a technology, keywords can be identified without having to start the computer or connect to the network. Researchers believe that they have found the right direction to achieve their goals. (Institute of Electronic Science and Technology Information, Ministry of Industry and Information Technology, Wang Wei)
(Original title: The first phase of the DARPA ultra-low-power sensor project goes smoothly)
The U.S. Defense Agency is committed to studying the progress of low-power sensors
[China Instrument Network Instrument Development] July 13, the latest news, the United States University of California Davis points correction in the development of a kind of super power sensor technology, is expected to meet the US Department of Defense's long-standing long-term, event-driven sensing The demand for capacity.