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Wearable devices will have future in battery life
bigdata 2015-09-21
According to foreign media reports, researchers from the University of California at San Diego said on Tuesday that the research team has developed a concept to verify and more secure and effective Bluetooth wireless technology. This technology can be used to transmit data in the human natural magnetic field, the future will be used in the field of wearable devices, ultra low power wireless communication.Although Bluetooth is the first choice for short distance wireless communication technology, this technology is not without drawbacks. For example, via Bluetooth for data transmission of the two devices are usually necessary to keep each other "smooth", if there is a human like objects from the barrier, there will be called "path loss" phenomenon, resulting in equipment needed to increase the power to maintain the stability.
The research results from the University of California at San Diego have avoided these problems. The School researchers used the insulation protection coil to create a magnetic field in the human body, and successfully achieved data transmission between two devices. The principle of this technique is similar to nuclear magnetic resonance and wireless medical implants, but the former is much lower than the requirement of energy consumption. In addition, compared to the traditional Bluetooth technology, through the human magnetic field for conduction caused by the "path loss" can be reduced more than 10 million times. If the future is widely used in wearable devices, will be able to greatly improve the performance of the device.
"Wearable devices, such as smart watches, etc., are currently facing a problem is running a short time, because they can only use a small size of the battery. With the body's magnetic field communication system, we can expect a substantial reduction in the energy consumption of the device as well as a sharp decrease in the number of charge." University of California at San Diego doctoral student and project leader Park Jiwoong said.
In addition, the transmission of data through the human body to improve the safety of. Bluetooth signals are generally distributed to all directions, and any one of them can be captured in 30 feet of the theory. If we switch to the human body to transmit, the eavesdropping in the absence of direct physical contact, it is not possible to intercept the transmission data.
