The US Defense Department said on the 15th that the US military has recently begun to develop a near-zero power sensor with low energy consumption, which can extend the life of the sensor from weeks or months to years. This not only reduces the cost of sensor usage, but also reduces the frequency of redeployment of sensors and reduces the exposure risk to maintenance personnel.
This project is called "Near Zero Power RF and Sensor Operation (N-ZERO)". According to a press release issued by the US Department of Defense website, existing sensors continue to consume energy while working, but most of the power is used to process irrelevant data. The near-zero power sensor is usually in a "sleep but still conscious" state. Only when a signal of interest is encountered, such as when a particular type of vehicle appears, it will wake up, and the noise and interference will be ignored.
According to the bulletin, the sensor will have a power of less than 10 nanowatts when it is in a "sleep but still conscious" state, and its power consumption is comparable to the automatic discharge of the watch battery, less than one thousandth of the current state-of-the-art sensor power consumption. The service life has increased from weeks or months to years, and maintenance costs and redeployment requirements have also decreased. The sensor's battery size is expected to drop to one-twentieth or less.
The communique said that the near-zero power sensor will focus on strengthening the detection and analysis capabilities in radio frequency, electromagnetic and sound. If successful, this project will not only benefit military sensors, but will also promote the development of the Internet of Things. The Internet of Things is a network of goods and goods that are interconnected and capable of information exchange and communication. It is predicted that by the year 2020, the global IoT equipment will reach 30 billion pieces.
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