Bluetooth beacons help hospitals track equipment

Keeping track – in real time – of medical equipment assets such as ventilators and defibrillators has never been more vital. Sixgill has developed Sense Hospital Asset Orchestration to track portable equipment to save time when it needs to be delivered quickly. The Bluetooth Low Energy (LE) AC plug-in wireless hub and ‘stick on’ beacon asset tracking solution uses Nordic Semiconductor’s nRF52832 SoC.

It tracks the location of assets within rooms and hallways using a technique based on Bluetooth LE beacon received signal strength indication (RSSI). All collated data is made available to hospital staff on a Sixgill-developed, cloud-based control panel. This graphically displays all tracked assets with colour-coded circles to show various status alerts (e.g. red to show assets that have been recently moved).

Sixgill says the rapid installation speed of its tracker is due to the simplicity of the drill- and screw-free design. This comprises two parts. First is AC plug-in wireless hubs based on a pass-through socket design. This is plugged into a single mains power socket in each room or hallway where asset tracking is required. Each one can cover a space of around 7.6 x 7.6m or 58m2 (25 x 25 feet or 625 feet2). The mains plugs have a Nordic nRF52832 installed to look and listen for Bluetooth LE beacons, and Wi-Fi to communicate to the cloud.

The stick-on Bluetooth LE beacons are attached to any asset the hospital would like to track. The nRF52832 SoC’s low power consumption means each beacon does not need to be recharged once installed. Its battery will last three to five years depending on the duty cycle. The Sense solution is scalable to support an unlimited number of Bluetooth LE beacons.

“Now a hospital is able to capture all asset information, transmit data and alerts as needed to appropriate staff, and reduce if not eliminate errors and delays when delivering critical assets to where they are needed,” says Joan Silver, VP of product marketing at Sixgill. “By collecting meaningful data and analysing it over time hospitals are also able to gain insights that optimise their operational and planning efficiencies. Our solution even supports [artificial intelligence] AI and machine learning to continuously improve a hospital’s understanding of its portable asset utilisation patterns to enable prediction of needs during both normal operations and emergency surges.

“Wireless ultra-low power consumption removes customer objections to extensive new wiring or incessant battery maintenance,” added Silver.

http://www.sixgill.com

http://www.nordicsemi.com

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Microcontroller enables real-time control for smart cities, says Microchip

Core independent peripherals, advanced analogue and on-chip communications are integrated in the latest AVR microcontrollers from Microchip. The higher-performance microcontrollers are required for better real-time control as well as to enable enhanced human machine interface (HMI) applications, explains Microchip. The AVR DA family of microcontrollers is the company’s first functional safety-ready AVR microcontroller family with Peripheral Touch Controller (PTC).

The family of microcontrollers meets new demand across multiple industries with advanced analogue and core independent peripherals and more capacitive touch channels over existing devices, said Greg Robinson, associate vice president of marketing, 8-bit microcontroller business unit. Target applications are the connected home security, building automation and sensor systems to automotive and industrial automation.

Microchip’s Functional Safety Ready designation covers devices that incorporate the latest safety features and are supported by safety manuals, failure modes, effects, and diagnostic analysis (FMEDA) reports, and in some cases, diagnostic software. This reduces the time and cost of certifying safety end applications. The AVR DA microcontroller family includes several integrated safety functions to ensure robust operation to ensure a sufficient supply voltage such as power-on reset, brown-out detector and voltage-level monitor. The cyclic redundancy check (CRC) scan ensures the application code in the flash memory is valid. By ensuring code integrity, unintended and potentially unsafe behaviour of the application can be avoided.

The AVR DA family of microcontrollers enable CPU speeds of 24 MHz over the full supply voltage range, memory density of up to 128 kbyte flash, 16 kbyte SRAM and 512 bytes of EEPROM, 12-bit differential ADC, 10-bit DAC, analogue comparators and zero cross detectors.

The PTC enables capacitive touch interface designs supporting buttons, sliders, wheels, touchpads, smaller touch screens as well as gesture controls used in a wide range of consumer and industrial products and vehicles. The AVR DA family supports up to 46 self-capacitance and 529 mutual capacitive touch channels and features the latest generation PTC with Driven Shield+ and boost mode technologies to enhance noise immunity, water tolerance, touch sensitivity and response time, says Microchip.

For embedded real-time control systems, the integrated event system enables inter-peripheral communication without involving the CPU. Events are latency-free and never lost, for predictable, reliable and safe designs. By reducing the time the CPU needs be active, the overall power consumption of the application is reduced.

The configurable custom logic peripheral enables the set-up of logical functions internally, eliminating the need for external components, reducing board space and bill of material costs. With the advanced analogue features like the 12-bit differential ADC, the AVR DA family of microcontrollers can measure small amplitude signals in noisy environments, making them well suited for sensor node applications in harsh environments.

According to Microchip, the high memory density and SRAM-to-flash ratio make the microcontrollers attractive for both wireless and wired connected sensors nodes, as well as other stack-intensive applications.

Software support includes Microchip’s MPLAB X, MPLAB Xpress and Atmel Studio, code configuration tools including MCC and START, and compilers including GCC, XC8 and the IAR Embedded Workbench. A functional safety certified version of the XC8 compiler is available via Microchip’s Functional Safety Ready program. Hardware support is included in debuggers/programmers including MPLAB PICkit 4, MPLAB SNAP, Atmel ICE and the AVR128DA48 Curiosity Nano evaluation kit.

The AVR DA family of microcontrollers is available in volume production now.

http://www.microchip.com

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PMICs halve current to boost efficiency, says Silicon Labs

Energy-friendly power management ICs (PMICs) from Silicon Labs, the EFP01 family are companion chips for EFR32 wireless devices and EFM32 microcontrollers. They enable developers to choose the optimal battery type and chemistries for their applications. Target applications include IoT sensors, asset tags, smart meters, home and building automation, security, and health and wellness products. The PMICs also enable developers to control a product’s power supply over multiple output rails and voltages.

Developers often use PMICs to meet the low-power requirements of IoT designs, but choosing the right one can be challenging. The EFP01 PMICs “provide a turnkey power management companion solution for our wireless SoC and MCU families, combined with Simplicity Studio tools, reference designs, sample applications and ‘PMIC-aware’ wireless stacks for easy development,” said Matt Saunders, vice president of IoT marketing and applications at Silicon Labs.

“If you want the easiest to configure, lowest power wireless solution, Silicon Labs’ EFP01 PMIC with Wireless Gecko is the best choice,” he continued. “The EFP01 is optimised for our IoT connectivity platforms, eliminating the need to incorporate multiple vendor reference designs into a schematic or layout.”

EFP01 PMICs include low-voltage DC/DC converters and regulators and a flexible mechanism to manage the power rails in a system design.

The EFP01 PMIC family features include flexible I/O voltage, a wide input voltage range (0.8 to 5.5V) to support an array of batteries. They also have wide output voltages to support a variety of peripherals, microcontrollers and radios.

The PMICs enable buck and boost voltage conversion as well as combined boost and buck (boost bootstrap) supporting low-voltage, high-current rails for IoT products requiring coin cell batteries and higher transmit power (up to +20 dBm).

They also feature multiple output power rails which allows an IoT product to be powered by one low-cost PMIC. This uses less board real estate and simplifies software/hardware design, says Silicon Labs.

The EFP01 offers quiescent current as low as 150 nA to reduce sleep current and enhance battery life.  It also supports coulomb counting which offers vital information for battery life estimation and preventive maintenance.

Samples and production quantities of EFP01 PMICs in a 3.0 x 3.0mm QFN20 package are available now. Silicon Labs also provides three development boards – the SLWRB4179B radio board and two PMIC evaluation boards. Simplicity Studio offers energy profiler and network analyser tools, wireless stacks and reference designs. It is available free of charge.

http://www.silabs.com

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Mouser has expanded MMIC range from Qorvo

Distributor, Mouser Electronics offers Qorvo’s line of gallium nitride (GaN) and gallium arsenide (GaAs) monolithic microwave integrated circuits (MMICs) following the acquisition of Custom MMIC. The range is targeted at aerospace, defence, space and commercial applications.

Custom MMIC is now part of RF and mmWave manufacturer, Qorvo’s Infrastructure and Defence Products (IDP) group. The portfolio now covers the entire RF signal chain, for defence customers, including satellite communications, microwave test equipment, electronic warfare, and advanced phased array radar applications.

Mouser offers Qorvo’s Custom MMIC line of products, including multiple low noise amplifiers, for communications that demand a small form factor and low power consumption. For example, the CMD264P3 6.0 to 18GHz low noise amplifier (LNA) and evaluation board deliver greater than 26dB of gain with a corresponding output 1.0dB compression point of +12dBm. There is also the CMD270P3 4.0 to 8.0GHz LNA, which has a low noise figure of 1.7dB and delivers greater than 16dB of gain. An evaluation board is coming soon. Another LNA is the CMD307P3 (8.0 to 16GHz) with a low noise figure of 2.0dB. An accompanying evaluation board is also available. These LNAs are all 50 Ohm-matched designs, eliminating the need for both external DC blocks and RF port matching, says Mouser.

Other products are the CMD305P3 6.0 to 14GHz driver amplifier, a broadband MMIC offering low current consumption and +20.5 dBm saturated output power. Qorvo’s CMD284P4 DC–22 GHz distributed amplifier is a GaAs MMIC that delivers wideband performance in a leadless 4.0 x 4.0mm package. Mouser also stocks the CMD305P3 evaluation board and CMD284P4 evaluation board.

Mouser claims to stock the world’s widest selection of the latest semiconductors and electronic components for the newest design projects. Mouser Electronics’ website is continually updated and offers advanced search methods to help customers quickly locate inventory. Mouser.com also houses data sheets, supplier-specific reference designs, application notes, technical design information, and engineering tools.

Mouser offers 27 support locations around the world to provide best-in-class customer service and ships globally to over 630.000 customers in more than 223 countries/territories.

Qorvo provides RF products and technology, systems-level expertise and global manufacturing for wireless devices, wired and wireless networks and defence radar and communications.

http://www.mouser.com

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