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A new pre-charge relay aimed specifically at electric and hybrid vehicles and other heavy duty battery powered systems has been launched by Omron Electronic Components Europe (OCB-EU).
The G9EJ-1 is specifically designed for use in pre-charge circuits used in electric vehicles and other battery systems to reduce the very high inrush currents on start-up. Before the vehicle or system is fully started, the pre-charge circuit is switched on briefly to charge capacitors in the controller and inverter through a current-limiting resistor. The G9EJ-1 is specifically designed to switch in this circuit, and is a cost-effective solution that can support up to 25A at 400VDC.
Omron has designed the G9EJ with a proprietary with battery such as Omron 48H907N Battery, Omron 48H907N-AU Battery, Omron HEM-907 Battery, Omron HEM-907XL Battery, Fluke 199B Battery, Fluke 199C Battery, Fluke F199 Battery, Fluke F199B Battery, Fluke F199C Battery, Panasonic P-10S/F24G2 Batterycontact driving system that enhances the inrush current performance and ensures a long service life under these conditions. The G9EJ also features a high efficiency magnetic circuit which helps extinguish magnetic arcs which can damage the contact surface. The relay is amongst the smallest solutions of its type in the industry, sized at just 30mm x 27mm x 31mm and weighing around 50g.
The Omron G9EJ-1 complements the Omron range of power relays for the electric vehicle main power relays, which switch in the full motor circuit once the pre-charge phase is complete. These include the G9EC which can switch up to 200A at 400VDC.
What happens when a company that makes old-fashioned spectacles attempts smartglasses? You get something like Meme, from Japanese glasses maker JINS. Still in prototype stage, and courting developers, the glasses will go on sale early this year for around $800 (correction: JINS expects the glasses to arrive priced somewhere far more reasonable: apparently that's the point). However, let's get out of the way what Meme doesn't do. There's no scree; there are no cameras. There's no voice activation or commands. But when I put them on, they feel like... glasses. And after testing some (if not all) of the other smartglasses, it was a relief. Is less more? JINS is hoping so.
So while there are no cameras or infrared sensors, Meme is able to monitor blinks and eye movement in eight directions. How? Three-point electrooculography (EOG) sensors, residing inside the two nosepads and one on the bridge of your bespectacled nose. Apparently, the science involves monitoring minute electromagnetic signals from your nervous system (and the differential between your two eyes) that help to calculate where you're looking. At the CES booth, this involved an adorable 3D panda, which stared in the appropriate direction. No cameras needed. We also tested out a surprisingly intense art demo that used our eye movement and blinks to create a musical light show. It felt like it might not be quite as precise as camera-based eye-tracking, but the fact that it's possible without a lens staring at you is still pretty impressive, and given its developmental status, we're willing to be forgiving.
There's also a three-axis gyroscope and three-axis accelerometer to track head movement. This (alongside blink monitoring) allows the glasses to... somehow... gauge fatigue levels. A companion app offers up an estimation of your energy levels, calories burned and, er, a blink counter. Those sensors, because they're placed at your head, can also give a good guess at your posture and body positioning. The company has already teamed up with health tech company Omron and is looking at the health applications as the major feature for its specs. The battery is apparently fit for 16 hours of continuous use -- so you'll be using them all day, JINS hopes. Fortunate, then, that they're comfortable enough for that.