A scoreboard to accelerate the design of wireless remote charging for smart buildings


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Energous has announced a partnership with e-peas SA, a developer of power harvesting PMICs and ultra-low power microcontrollers, to develop an evaluation board that combines e-peas power management IC technology with a radio frequency (RF) solution for energy support. Wireless remote charging applications. In an interview with EEWeb, Stephen R. Rison, President and CEO and Cesar Johnston, COO and Executive Vice President of Engineering, at Energous, highlights features and app opportunities for smart buildings, industrial IoT sensors, retail electronic displays and more. . The combination of AEM ‘WattUp and e-peas’ technologies in an integrated reference design will facilitate the deployment of new solutions. WattUp & e-peas’ AEM30940 Belgian company e-peas provides solutions for energy aggregation and processing to give unlimited battery life to wireless devices, which increases the amount of power harvest and significantly reduces energy consumption. Energous’s WattUp wireless charging technology is based on RF technology, which provides a number of benefits for wireless charging, including the ability to design into compact products and devices without flat surfaces. Wireless Air Charging – Reducing positioning problems and interference with coil-based solutions. The simplicity of the design with a single amplifier and antenna makes it small enough to suit various use cases. In terms of frequency, the solution is based on Energous’ 900MHz technology. The rating panel functions mainly include a PMIC e-peas AEM30940 kit, rechargeable lithium battery, or rechargeable lithium battery, BLE SoC based on Smartbond DA14531, ambient light sensors, temperature / humidity sensors and an optional low power display driver Highly in electronic ink. Figure 1: Scoreboard Diagram Figure 2: Scoreboard by Energous and e-peas “Our technology will enable adaptive harvesting, which relates to creating and deploying transmitters, very similar to Wi-Fi, where you can actually extend the transmission area. We now have a device. One transmission could allow this board to exceed five meters. In this specific forum, we focused on two potential scenarios for clients. ”One of them, the advertisement or scanning for a BLE device, transmits a certain type of information,” said Energus Rison and Johnston. -peas – AEM30940 – is a power management integrated circuit that extracts DC power from a piezo generator, small turbine generator or any high-frequency RF input to store energy simultaneously in a rechargeable element and supply the system with two independent regulated voltages. AEM30940 allows extended life The battery and finally eliminating the primary energy storage element in a wide range of wireless applications such as industrial monitoring, home automation, transportation, and smart agriculture. The AEM30940 harvests available input current up to 110 mA. It integrates a boost transformer We reduce power too to charge a storage element, such as a Li-ion battery, thin battery, super capacitor or conventional capacitor. The booster transformer operates at an input voltage in the range of 50mV to 5V with its unique cold start circuit, it can start with blank storage elements with an input voltage as low as 380mV and an input power of only 3MW. Typically a low voltage source will operate a controller at 1.2V or 1.8V. A high voltage source may normally drive a radio transmitter and receiver with configurable voltage between 1.8V and 4.1V. Both are driven by high efficiency LDO (low leakage)) low noise and high stability regulators. The configuration pins define the different operating modes by specifying pre-defined conditions for the power storage element (overcharging or overvoltage in discharging), and by choosing the high voltage source voltage and the low voltage source. Moreover, special modes can be obtained at the expense of a small number of configuration resistors. The chip integrates all the active elements to power a typical wireless sensor. Five capacitors and two inductors are required, available respectively in the 0402 and 0603 small SMD formats. With only seven external components, integration is the maximum, footprint and bill of materials are minimal, which improves marketing time and costs for WSN designs. WattUp technology is a non-modulated beam, single antenna, and single power amplifier (PA) design, which is based on an architectural approach that defines a charging path through the air for small-sized devices. The goal is to create a one-meter “charging area” in front of the transmitter, where multiple receivers such as smart glasses, hearing aids and wearables can be charged simultaneously without any restrictions on positioning or orientation. .


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