Fememo

A sverhekonomny Bluetooth

A new standard for wireless data, Bluetooth 4.0. Its key feature is the ultra-low power consumption, which enables all kinds of wireless sensors operate from a battery for a few years.

Consortium Bluetooth SIG announced the Bluetooth 4.0 standard for wireless transmission of signals from miniature sensors . Currently, Bluetooth is a core technology for wireless transmission of data from mobile phones. The aim of the new standard is not improving on the previous, and output technologies to new markets – in health, healthy lifestyles, security systems and home entertainment.

Bluetooth 4.0 is designed to transmit short informational messages (8-27 bytes) at speeds up to 1 Mbit / s, reported CNews. For comparison, Bluetooth 3.0, finalized by less than a year ago, you can transfer data at speeds up to 24 Mbps, but this standard was deprived of the main advantages of the new standard for speed played a minor role. A key feature of Bluetooth 4.0, an ultra-low consumption of electrical energy. This was the reason a new standard.

Small power consumption in Bluetooth 4.0 is achieved using a special algorithm works. Radio-wave transmitter is switched on only when necessary to send data, then immediately shuts down. On time can be equal to 3 ms. In this mode, a single-cell battery CR2032 enough for several years.

add support for Bluetooth 4.0 in commercial products will be in two ways. The first method is the integration of Bluetooth 4.0 in the standard controller Bluetooth 2.1 and 3.0, which leads to the minimal increase in costs of existing producers of such decisions. The second method involves using a single chip with two-way communication for management. The first method is suitable for mobile phones and laptops. The second provides for use directly in the sensors. Among other features of the new standard, it is worth noting protection against interference from other radio waves with a range of 100 meters, as well as signal encryption with a key length of 128 bits.

For information on when it will be possible see the first consumer products with support for Bluetooth 4.0, not reported, but the first chip with simultaneous support for Bluetooth 4.0 and 3.0 already released at least one company, ST-Ericsson. In addition, the use of Bluetooth 4.0-profit organization interested in the Continua Health Alliance, dedicated to developing solutions for remote monitoring of patients at home.