Circuit Cellar №1 (330) 2018.pdf

(15828 KB) Pobierz
circuitcellar.com
POWERING DRONES
JANUARY 2018
ISSUE 330
Inspiring the Evolution of Embedded Design
POWER OPTIONS EXPAND FOR
COMMERCIAL DRONES
◗
Product Focus: COM Express Boards
◗
5G Technology & Testing |
Massage Vest Embeds Microchip PIC32 | FPGA Design: A Fresh Take |
Microcontroller-based Platform Stabilizer | Home Cleaning Robot (Part 2) |
◗
5 Fault Injection Attacks | LF Resonator Filter | Overstress Protection |
Money Sorting Machines (Part 2)
◗
The Future of Cellular IoT
Trust Your Application
Developing embedded systems is a challenge. Higher complexity, better performance
and more connectivity brings a rapid increase of safety and security demands. This creates
needs for secure workflows and full code control, extending the developers’ reach all the
way from design through to production.
We are dedicated to provide you with the superior technology and close-at-hand
support you need to be confident in your code when building the products of today and
the innovations of tomorrow. Using the right tools, you can trust your application and
create for the future.
www.iar.com/ew
brings to you...
india smart cities forum
#indiasmartcitiesforum
India Habitat Centre | New Delhi | India
30 January 2018
india smart villages forum
#indiasmartvillagesforum
India Habitat Centre | New Delhi | India
31 January 2018
celebrating
5 years of...
> building the national m2m + iot – b2b-b2c-b2g forum
> building the national m2m + iot knowledge base
> building the national m2m + iot stakeholders community
> relentless advocacy for the national m2m + iot eco-system
> building and marketing the ‘brand of India’ to the entire
ICT (m2m + iot) world
OUR EMINENT SPEAKERS
Dr Sameer Sharma
Addl Secretary,
Urban Affairs,
Ministry of
Housing and Urban
Development
Mr N Sivasailam
Addl Secretary,
Dept of
Telecommunications
Ministry of
Communications
Prof V Ramgopal
Rao
Director, Indian
Institute of
Technology, Delhi
(IIT Delhi)
H.E. Mr Tomasz
Kozlowski
Ambassador of the
European Union to
India
Mr Arun Prakash
CEO, Agra Smart
City
Dr Ramnath
Sonawane
CEO, Nagpur Smart
City
Ms Chhavi Rajawat
Sarpanch, Village
Soda, Rajasthan
Mr Pramod Gurjar
CIO, Nashik Smart
City
More EMINENT SPEAKERS on
http://m2m2iotforum.com/speakers
Supported by
Supporting Forum Partners
TM
This forum is supported by European Union
Proudly brought to you by
Principal Media Partner
European Union
Contacts
Ms. Shilpi Batra – Forum Director
| India m2m + iot Forum 2018 | Phone: +91 9818105643 I +91 9599074767
E-mail: shilpi.b@originbizserv.com
2
CIRCUIT CELLAR • JANUARY 2018 #330
Issue 330 January 2018 | ISSN 1528-0608
OUR NETWORK
CIRCUIT CELLAR® (ISSN 1528-0608) is published monthly by:
KCK Media Corp.
111 Founders Plaza, Suite 904
East Hartford, CT 06108
Periodical rates paid at East Hartford, CT, and additional offices.
One-year (12 issues) subscription rate US and possessions
$50, Canada $65, Foreign/ ROW $75. All subscription orders
payable in US funds only via Visa, MasterCard, international
postal money order, or check drawn on US bank.
SUBSCRIPTION MANAGEMENT
SUPPORTING COMPANIES
Accutrace, Inc.
All Electronics Corp.
AP Circuits, Ltd.
CCS, Inc.
EzPCB
IAR Systems, Inc.
India M2M + IoT Forum
Mouser Electronics, Inc.
Pololu Corp.
Technologic Systems, Inc.
C3
77
33
77
39
Online Account Management:
https://goo.gl/XFbewK
Renew | Change Address/email | Check Status
CUSTOMER SERVICE
E-mail:
circuitcellar@pcspublink.com
Phone:
800.269.6301 | 760-738-4970 ext. 124
Mail:
Circuit Cellar, P.O. Box 462256, Escondido, CA 92046
Postmaster:
Send address changes to
Circuit Cellar, P.O. Box 462256, Escondido, CA 92046
NEW SUBSCRIPTIONS
circuitcellar.com/subscription
ADVERTISING
C2
1
77
13
C4
Contact:
Hugh Heinsohn
Phone:
757-525-3677
Fax:
888-980-1303
E-mail:
hheinsohn@circuitcellar.com
Advertising rates and terms available on request.
NEW PRODUCTS
E-mail:
editor@circuitcellar.com
HEAD OFFICE
KCK Media Corp. 111 Founders Plaza, Suite 904
East Hartford, CT 06108
Phone: 860.289.0800
NOT A SUPPORTING COMPANY YET?
Contact Hugh Heinsohn
(hugh@circuitcellar.com, Phone: 757-525-3677, Fax: 888-980-1303)
to reserve space in the next issue of Circuit Cellar.
COPYRIGHT NOTICE
Entire contents copyright © 2018 by KCK Media Corp.
All rights reserved. Circuit Cellar is a registered trademark
of KCK Media Corp. Reproduction of this publication in
whole or in part without written consent from
KCK Media Corp. is prohibited.
THE TEAM
PRESIDENT
EDITOR-IN-CHIEF
GR APHICS
DISCLAIMER
KCK Media Corp. makes no warranties and assumes no
responsibility or liability of any kind for errors in these
programs or schematics or for the consequences of any such
errors printed in Circuit Cellar®. Furthermore, because of
possible variation in the quality and condition of materials and
workmanship of reader-assembled projects, KCK Media Corp.
disclaims any responsibility for the safe and proper function
of reader-assembled projects based upon or from plans,
descriptions, or information published in Circuit Cellar®.
The information provided in Circuit Cellar® by KCK Media
Corp. is for educational purposes. KCK Media Corp. makes
no claims or warrants that readers have a right to build
things based upon these ideas under patent or other
relevant intellectual property law in their jurisdiction, or
that readers have a right to construct or operate any of
the devices described herein under the relevant patent or
other intellectual property law of the reader’s jurisdiction.
The reader assumes any risk of infringement liability for
constructing or operating such devices.
© KCK Media Corp. 2018 Printed in the United States
KC Prescott
CONTROLLER
Jeff Child
ADVERTISING
COORDINATOR
Grace Chen
PROJECT EDITORS
Chuck Fellows
FOUNDER
Nathaniel Black
Steve Ciarcia
COLUMNISTS
ADVERTISING SALES REP.
Chris Coulston
Ken Davidson
David Tweed
Hugh Heinsohn
Jeff Bachiochi (From the Bench), Bob Japenga (Embedded in Thin
Slices), Robert Lacoste (The Darker Side), Ed Nisley (Above the Ground
Plane), George Novacek (The Consummate Engineer), and Colin O’Flynn
(Embedded Systems Essentials)
circuitcellar.com
3
INPUT
Voltage
The Quest for Extreme Low Power
O
ver the next couple years, power will
clearly rank as a major design challenge
for the myriad of edge devices deployed in
Internet of Things (IoT) implementations.
Such IoT devices are wireless units that need to be always
on and connected. At the same time, they need low
power consumption, while still being capable of doing the
processing power needed to enable machine intelligence.
The need for extreme low power in these devices goes
beyond the need for long battery life. Instead the hope is
for perpetually powered solutions providing uninterrupted
operation—and, if possible, without any need for battery
power. For their part, microcontroller vendors have been
doing a lot in recent years within their own labs to craft
extreme low power versions of their MCUs. But the appetite
for low power at the IoT edge is practically endless.
Offering a fresh take on the topic, I recently spoke with
Paul Washkewicz, vice president and co-founder of Eta
Compute about the startup’s extreme low power technology
for microcontrollers. The company claims to offer the
lowest power MCU intellectual property (IP) available today,
with voltages as low as 0.3 V. Eta Compute has developed
and implemented a unique low power design methodology
that delivers up to a 10x improvement in power efficiency.
Its IP and custom designs operate over severe variations
in conditions such as temperature, process, voltage and
power supply variation. Eta Compute’s approach is a self-
timed technology supporting dynamic voltage scaling (DVS)
that is insensitive to process variations, inaccurate device
models and path delay variations.
The technology has been implemented in a variety of
chip functions. Among these are M0+ and M3 ARM cores
scaling 0.3 V to 1.2 V operation with additional low voltage
logic support functions such as real-time clocking (RTC),
Advanced Encryption Standard (AES) and digital signal
processing. The technology has also been implemented in
an A-D converter sensor interface that consumes less than
5 µW. The company has also crafted an efficient power
management device that supports dynamic voltage scaling
down to 0.25 V with greater than 80% efficiency.
According to the company, Eta Compute’s technology
can be implemented in any standard foundry process
with no modifications to the process. This allows ease of
adoption of any IP and is immune to delays and changes in
process operations. Manufacturing is straightforward with
the company’s IP able to port to technology nodes at any
foundry. Last fall at ARM TechCon, David Baker, Ph.D. and
Fellow at Eta Compute, did a presentation that included a
demonstration of a small wireless sensor board that can
operate perpetually on a small 1 inch
2
solar cell.
Attacking the problem from a different direction,
another startup, Nikola Labs, is applying its special
expertise in antenna design and advanced circuitry to build
power harvesting into products ranging from wearables to
sensors to battery-extending phone cases. Wi-Fi routers,
mobile phones and other connected devices are continually
emitting RF waves for communication. According to the
company, radio wave power is strongest near the source—
but devices transmit in all directions, saturating the
surrounding area with stray waves. Nikola Labs’ high-
performance, compact antennae capture this stray RF
energy. Efficient electronics are then used to convert it
into DC electricity that can be used to charge batteries or
energize ultra-low power devices.
Nikola’s technology can derive usable energy from a
wide band of frequencies, ranging from LTE (910 MHz) to
Wi-Fi (2.4 GHz) and beyond (up to 6 GHz). Microwatts of
power can be harvested in an active ambient RF area and
this can rise to milliwatts for harvesters placed directly on
transmitting sources. Nikola Labs has demonstrated energy
harvesting from a common source of RF communication
waves: an iPhone. Nikola engineers designed a case for
iPhone 6 that captures waste RF transmissions, producing
up to 30 mW of power to extend battery life by as much
as 16% without impacting the phone’s ability to send and
receive data.
Whether you address the challenge of extreme low
power from the inside out or the outside in—or by
advancing battery capabilities—there’s no doubt that the
demand for such technologies will only grow within the
coming years. With all that in mind, I look forward to
covering developments on this topic in
Circuit Cellar
throughout 2018.
Jeff Child

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin