Ultra-low-power Bluetooth devices might eliminate need for batteries

first_img Continue Reading Previous congatec: new embedded edge server technologies for the energy sectorNext Portwell launches compact and robust IoT gateway PC “If you hate changing batteries, you’re going to like the technologies we’re developing to help eliminate that problem,” said John Hennessy, advisor to Atmosic and chairman of the board of Alphabet. “The Atmosic team is applying its extensive wireless and low-power expertise to bring innovative radio and energy-saving designs to market. Our mission is to redefine battery life.Many of the IoT end points powered by batteries make them truly “wire free” solutions. However the opportunity cost of replacing batteries frequently is significantly more than the cost of battery. Having battery-free or forever battery life solutions greatly eliminates the recurring operating and opportunity costs, said Srinivas Pattamatta, VP of Atmosic.Atmosic has developed three innovative technologies: Lowest Power Radio, On-demand Wake-up, and Controlled Energy Harvesting. The first is aimed at solving the energy and management challenges of IoT devices such as beacons and fitness trackers. Atmosic’s controlled energy harvesting brings a new level of battery performance.Figure 2: Atmosic Bluetooth 5 ultra-low power single chip [Source: Atmosic] The Bluetooth 5 standard was designed primarily to share information between devices within the confines of the home or a car and in a workplace. That said, the new version of Bluetooth has properties that should make it attractive for some Internet of things applications. Atmosic Technologies is focusing on low-power Bluetooth 5 wireless platforms to enable networks of IoT devices that are, as the company says,”Forever Connected, Anywhere.”The new Bluetooth 5 offers performance improvements over legacy Bluetooth of four times the range, twice the speed, and eight times the bandwidth. Bluetooth 5 extends the functions that were already provided by the previous versions and aims at greater flexibility and interaction between the network-connected devices.What might link Bluetooth 5 to the IoT at large is the presence of Bluetooth in smartphones and tablets. Many IoT applications require a long-range but minimal bandwidth capacity, transmitting data only intermittently. Bluetooth stands as an alternative for other IoT applications, offering mesh networking that can include a large number of nodes. Bluetooth 5 can guarantee a decentralized system of devices without having to resort to a single controller hub – a real peer-to-peer communication network in which the nodes are equivalent or, better, equal. Different products will be able to interact and work together.The Bluetooth 5 standard also gives special attention to connection security. This is mainly done to avoid interference with other wireless devices connected to the network and thus facilitate the use of IoT applications.By 2023, there will be over 30 billion Bluetooth-enabled devices worldwide, with a growing percentage destined for IoT applications.Atmosic, with its RF CMOS design, focuses on a vision of low-power IoT applications that might not even have batteries, thereby avoiding problems related to battery life.Dropping batteries will have a strong impact on costs and maintenance (Figure 1). The growth and evolution of Bluetooth systems is surely linked to the growth leading to the IoT industry in these years and in the coming years.Figure 1: improvement in battery life with Bluetooth 5 [Source: Atmosic] Figure 3: Atmosic technology [Source: Atmosic] By using their energy harvesting solution, the system can generate several tens of milliwatts with an efficiency of 30 to 40 percent, excluding the loss of the RF path.Various parameters must be evaluated, which can decide the performance of an RF energy harvesting project. Critical parameters such as efficiency, sensitivity, operating distance, and output power are defined as the standard for making relative comparisons. The Q factor is generally defined as a dimensionless value that describes how strong the resonance is. Each antenna has its optimal operating frequency, precisely known as the resonance frequency. The latter is determined by the capacitance and inductance characteristics of the antenna. The capacity and inductance of an antenna are functions of the frequency and physical size of the antenna itself. The larger the antenna size, the lower the resonance frequency. The bandwidth of an antenna is the frequency range in which the antenna can work efficiently. Narrowband antennas offer excellent conversion efficiencies but can only recover a limited amount of energy.Energy harvesting can use several environmental sources and provides an unlimited operational life for low power equipment, thus eliminating the need to replace batteries which is expensive and impractical in many IoT applications. The possibility of radiofrequency energy harvesting therefore offers space to the general concept of collecting RF energy from both internal and external environment, of any characteristic in the range of radio frequencies and in the energy range whose limits are set only by the natural threshold of thermal noise and the performance of the collection device.>> This article was originally published on our sister site, EE Times:”The Next Wave of IoT Bluetooth Devices Might Not Have Batteries.” The Atmosic M2 series solutions are compliant with the Bluetooth 5 standard and improved with low-power radio and Wake Up on-demand technologies to require 10 to 100 times less power. The M3 series Atmosic solutions have added controlled energy harvesting that allows operation without batteries, thus ensuring battery life or battery-free operation forever (Figure 2 and 3). Share this:TwitterFacebookLinkedInMoreRedditTumblrPinterestWhatsAppSkypePocketTelegram Tags: IoT, Wireless last_img read more

WTA Finals: Kerber and Stephens win in 3 sets, Wozniacki earns first win

first_imgAngelique Kerber produced a dogged display of defensive tennis to tame big-hitting Naomi Osaka 6-4 5-7 6-4 in a classic Red Group encounter between the winners of the last two Grand Slams at the WTA Finals on Wednesday.In the late match, Sloane Stephens continued her dream debut at the eight-woman event when the American moved to the brink of the semi-finals after she rallied for a 7-6 (4) 2-6 6-3 victory over fellow tournament rookie Kiki Bertens.Kerber’s victory evened up her record at 1-1 in round robin play as Osaka slumped to her second straight defeat, leaving the U.S. Open champion needing to beat Bertens in her final group match to have any hope of advancing.The early match began tentatively with three consecutive breaks of serve falling in the German’s favour as Osaka looked to dictate with her power, while Kerber was content to counter-punch off the back foot and keep the ball in play.Osaka, who was often battling to keep her emotions in check, fashioned five break points when Kerber served for the set at 5-4 but the German was able to stave off all of them with some gutsy tennis and sealed the opener with a booming serve.Osaka’s inability to make the most of her potent serve looked to have cost her the match when she was broken to love in the ninth game of the second set but she then reeled off three games in a row to level the contest.”It was a great match from both of us. It’s a great feeling to, of course, win the match like that.” @AngeliqueKerber breaks down her match with Naomi Osaka#WTAFinals pic.twitter.com/TBBKPqfgGpadvertisementWTA (@WTA) October 24, 2018The third set was a war of attrition with both players stretching every sinew to hold serve until Osaka cracked first in the seventh game, gifting Kerber the crucial break with a slew of poor shot selections from 40-15 ahead.The break was enough for Kerber to seal a brilliant win, with Osaka crushing a backhand into the net on the German’s first match point.”I had my chances in the second set but she played some unbelievable tennis to win that one, and it felt like there was only one or two points in the decider,” Wimbledon champion Kerber said in a post-match interview.”It was great to win such a great match and to be able to look forward to another one in two days from now.”SLOW BURNER”2 hours and 20 minutes and we were still out there battling.”@SloaneStephens breaks down her marathon match with Kiki Bertens. #wtafinals pic.twitter.com/lNzDPE161dWTA (@WTA) October 24, 2018The second match was a slow burner, with the crowd taking time to warm to the contest, as Stephens raced into a 3-0 lead before Bertens dragged herself back thanks to some clever changes of pace and direction.Improved serving from both players ensured the opener went to a tiebreak and after Stephens staked another 3-0 lead, the American edged ahead on her third set point when Bertens sent a forehand into the tramlines.Bertens capitalised on a rapid drop in intensity from Stephens to reel off four games in a row on her way to taking the second set.The Dutchwoman carried that momentum into the start of the decider, breaking to move 2-0 ahead, but Stephens finally woke from her slumber after looking flat for a half a dozen games too reassert her authority and close out a memorable victory.”I just tried my best from the very first point of the final set. It didn’t go my way immediately but I just kept battling and I’m really pleased to pull through,” Stephens said.WOZNIACKI EARNS FIRST WINI think there’s always nerves, a little, bit when you’re trying to finish off a match. But I knew what I wanted to do, and it worked out.Yes it did, @CaroWozniacki!#WTAFinals pic.twitter.com/26ETZgskdaWTA (@WTA) October 23, 2018Caroline Wozniacki overcame a mid-match wobble and withstood a barrage of big hitting to get her WTA Finals title defence back on track with a 7-5 3-6 6-2 victory over Petra Kvitova at the Singapore Indoor Stadium.In the second White Group encounter of the day, Elina Svitolina moved to the brink of the semi-finals with a gutsy 6-3 2-6 6-3 win over Karolina Pliskova, the Ukrainian recording her second straight win of the tournament to top the pool.Wozniacki and Kvitova came into their contest on the back of opening defeats in round robin play but the Danish world number three ended a run of four straight losses to the Czech to stay alive in the eight-woman tournament for at least one more match.advertisementThe Dane, who started her campaign with a 6-2 6-4 loss to Pliskova on Sunday, spent most of the match against Kvitova pinned on the baseline but her consistency and patience proved vital as she pulled away in the final set.”I played much better today. I served and returned pretty well, and moved really well against a player who is so powerful that you have to stay on your game,” Wozniacki said”You never know what is going to happen against Petra, so I just stayed focused and got a lot of balls back.”The match was a cagey affair from the outset with seven holds of serve in a row. But after they traded breaks as the intensity levels picked up, Wozniacki broke again to seal the opener when Kvitova blasted a forehand into the net.BUNDLE OF ENERGYKvitova took control of the second set with an early break, then lost momentum when Wozniacki took a timeout for treatment on her knee, before regaining the upper hand to level the match with a sliced backhand winner on her third set point.Sensing her title defence was hanging by a thread, Wozniacki regrouped to break at the start of the decider when she put away a backhand to win the longest rally of the match, and ran away with the contest as Kvitova wilted.The 28-year-old Wozniacki sealed victory on her first match point with a big serve that Kvitova sent long, and will hope to complete round robin play with a victory over Svitolina to secure a semi-final berth.Svitolina was a bundle of energy at the start of the second match, full of intensity and covering every inch of the court as she rode her early momentum to wrap up the opening set with a forehand winner that was greeted with a big clenched fist.The Ukrainian had played almost perfect tennis until midway through the second set when a combination of good fortune and rasping cross-court winners earned Pliskova her first break of the tie, a feat she repeated two games later to level the match.It was very important to take one point at a [email protected] walks us through her third straight win over Karolina Pliskova.#WTAFinals pic.twitter.com/pMqmsmvURIWTA (@WTA) October 23, 2018Svitolina shrugged off the setback to come storming out of the blocks in the decider, racing to a 4-0 lead that she carried all the way to victory despite a late fightback from Pliskova.She only needs to take a set off Wozniacki on Thursday to reach the last four for the first time but as it stands, all four players can still mathematically reach the semi-finals.last_img read more