Author Archives: steve bush

Intelligent computers will work with humans

Prof Nick Jennings Soton

“If realised correctly, this vision of people and computational agents operating at a global scale offers tremendous potential” Jennings

A five year UK project has predicted the way humans will interact with intelligent computers.

“Instead of issuing instructions to passive machines, we will increasingly work in partnership with ‘agents': highly interconnected computational components that are able to act autonomously and intelligently, forming human-agent collectives [HACs],” said the University of Southampton, which lead the project, known as Orchid.

Agents can be in sensors collecting and analysing information to give the bigger picture of an emergency situation as it develops or in a smart meter monitoring the energy consumption in a home to recommend how occupiers might adapt to reduce energy cost and carbon footprint.
ORCHID Showcase: Re-inventing our relationship with computers

Its leader was Professor Nick Jennings, head of Southampton’s Agents Research Group.

Jennings said:

“It is simply unfeasible to expect individuals to be aware of the full range of potentially relevant possibilities and to be able to pull them together manually. Computers need to step up to the plate and proactively guide users’ interactions based on their preferences and constraints.

This shift is needed to cope with the volume, variety and pace of the information and services that are available.

In so doing, greater attention needs to be given to the balance of control between people and machines.

If realised correctly, this vision of people and computational agents operating at a global scale offers tremendous potential and will help us meet the societal challenges of sustainability, inclusion, and safety.”

Results are to be presented at the Royal Academy of Engineering in London later this month.

Examples on display will include:

Joulo
A home heating advice system that uses a temperature logger and on-line algorithms to provide feedback to households on how they are using their current heating system, along with autonomous intelligent home heating agents that learn the comfort preferences in order to provide efficient comfortable control.

AtomicOrchid
A mobile mixed-reality game in which first responders work with a response headquarters to rescue as many casualties as possible. “This game has allowed researchers to study team coordination and understand how human responders can be supported by computational agents that assist the planning and execution of the rescue mission, including the coordination of multi-UAV {drone] deployments,” said the University.

Japan Nuclear Crowd Map platform
Following Fukushima, citizen scientists deployed sensors and up-loaded data to help track the spread of airborne radioactive particles. To identify accurate information, the platform combines reports from thousands of sensors and uses machine learning algorithms to correct for biases and noise and weed out defective sensors.

Orchid was a £10m project (£5m from EPSRC, £5m from from project partners) with around 60 researchers from the universities of Southampton, Oxford and Nottingham, together with BAE Systems, Secure Meters UK, Rescue Global and the Australian Centre of Field Robotics.

The project has employed and trained 50 research fellows and PhD students, and generated over 200 publications, of which 40 are collaborations between the partners and half involve an international co-author.

“The Orchid legacy includes the development of 25 new academic collaborations and follow-on grants worth £15m. Orchid researchers have organised 25 major conferences and workshops and won over 20 prizes, awards and best papers,” said Southampton.

steve bush

ECCE: 650V GaN transistor hits 100A for solar

GaN Systems GS61006P package.jpg

Packaging the earlier GS61006P

GaN Systems is showing a 650V 100A GaN transistor at the IEEE Energy Conversion Congress & Expo in Montreal.

Sampling with potential solar, industrial and automotive customers, GS66540C  can switch faster than 100V/nS, claims the Canadian firm. Rds looks to be around 20mΩ

Packaging it describer as “an evolved form” of the firm’s bond-wire-less laminate-based GaNPX packaging, specially developed for higher operating currents, with lower inductance and improved surface mount mechanical robustness required – the latter aimed at industrial and automotive markets.

Further details do not appear to be available yet. The majority of the firm’s high power transistors need 6V gate drive with no requirement for negative voltages in the off state. Gate resistors are needed to control the fast turn-off and prevent gate voltage transients from occurring through the drain-gate capacitance. 

The body of existing GaNPX packaging is constructed from FR-4-like laminate and has an isolated heat tab (to which the die is directly bonded), which must be electrically connected externally to the source for proper operation.

Also at ECCE’ there will be a 2kW commercial vehicle inverter from with GaN System’s transistors from Ricardo and a 3kW, 800-380V bi-directional dc-dc converter for home use from US consortium NextHome.

ECCE’15 is in Montreal over 20-24 September.

steve bush

Free book on copper contacts

Copper in electrical contactsThe Copper Development Association has released a book on how electrical contacts work and the various materials involved, and it is free to download.

“The importance of electrical contacts has been underscored by some high-profile and costly system failures. One example is the F-16 fighter plane, where connector failure has been linked to the cause of engine failure and aircraft crashes. Fretting corrosion caused by vibration led to failure of the electrical connector (tin-plated pins plugged into gold-plated sockets) that supplied power to the main fuel shut-off valve,” said the association.

Called Copper in Electrical Contacts, the 40 page publication’s main chapters cover:

  • Contact interface: an introduction to essential concepts
  • Types of contacts and applications: arcing contacts (live make/break), non-arcing (demountable) contacts, fixed contacts and sliding contacts.
  • Materials for contacts and contact assemblies: descriptions of over 30 commonly-used copper alloys
  • Properties of contact materials – Physical and mechanical property tables for contacts and parts including springs

The editor of Copper in Electrical Contacts is David Chapman, former electrical programme manager for Copper Development Association, and author and chief editor of the LPQI Power Quality Application Guide.

Download Copper in Electrical Contacts here

steve bush

Free book on copper contacts

Copper in electrical contactsThe Copper Development Association has released a book on how electrical contacts work and the various materials involved, and it is free to download.

“The importance of electrical contacts has been underscored by some high-profile and costly system failures. One example is the F-16 fighter plane, where connector failure has been linked to the cause of engine failure and aircraft crashes. Fretting corrosion caused by vibration led to failure of the electrical connector (tin-plated pins plugged into gold-plated sockets) that supplied power to the main fuel shut-off valve,” said the association.

Called Copper in Electrical Contacts, the 40 page publication’s main chapters cover:

  • Contact interface: an introduction to essential concepts
  • Types of contacts and applications: arcing contacts (live make/break), non-arcing (demountable) contacts, fixed contacts and sliding contacts.
  • Materials for contacts and contact assemblies: descriptions of over 30 commonly-used copper alloys
  • Properties of contact materials – Physical and mechanical property tables for contacts and parts including springs

The editor of Copper in Electrical Contacts is David Chapman, former electrical programme manager for Copper Development Association, and author and chief editor of the LPQI Power Quality Application Guide.

Download Copper in Electrical Contacts here

steve bush

Free book on copper contacts

Copper in electrical contactsThe Copper Development Association has released a book on how electrical contacts work and the various materials involved, and it is free to download.

“The importance of electrical contacts has been underscored by some high-profile and costly system failures. One example is the F-16 fighter plane, where connector failure has been linked to the cause of engine failure and aircraft crashes. Fretting corrosion caused by vibration led to failure of the electrical connector (tin-plated pins plugged into gold-plated sockets) that supplied power to the main fuel shut-off valve,” said the association.

Called Copper in Electrical Contacts, the 40 page publication’s main chapters cover:

  • Contact interface: an introduction to essential concepts
  • Types of contacts and applications: arcing contacts (live make/break), non-arcing (demountable) contacts, fixed contacts and sliding contacts.
  • Materials for contacts and contact assemblies: descriptions of over 30 commonly-used copper alloys
  • Properties of contact materials – Physical and mechanical property tables for contacts and parts including springs

The editor of Copper in Electrical Contacts is David Chapman, former electrical programme manager for Copper Development Association, and author and chief editor of the LPQI Power Quality Application Guide.

Download Copper in Electrical Contacts here

steve bush

Clearer multi-spectral images for security

RFEL pseudo colour pixel depiction

Fused image (bottom), with original visible light image (top left) and infra-red original (top right

Methods of combining images from infra-red and visual cameras for security applications are becoming increasingly sophisticated.

The latest announcements in the field are ‘colour noise suppression’ and ‘pseudo colour pixel depiction’ from Isle of Wight-based RFEL. The former is said to give more natural looking results in low-light conditions, and the later can be used to highlight key temperature differences in a scene.

Fusion as a concept is simple, according to the firm: create a single video of a scene that combines feature information from two cameras – one operating in visible spectrum and one in infra-red. However, the practical reality of achieving this with anything other than a crude overlay or averaging approach is that there are significant technical hurdles to overcome.

RFEL’s fusion algorithm collection for FPGA-based processing is called Video Fusion. It includes real-time warp capability to pixel-align the slightly different views seen by side-by-side cameras.

“Although there are many applications where a simple blend of two low-resolution images is acceptable, more and more users are seeking to go to the next level, and are demanding greater definition and high feature clarity from all sensor inputs in the fused result. With Video Fusion IP, we can offer significant performance increases,” said RFEL business development manager Wayne Cranwell.

RFEL colour noise suppression

Blended image with colour noise (left) compared to enhanced multi-resolution fusion with colour noise suppression (right)

Pseudo colour pixel depiction (top or page image) gives designers the ability to highlight key temperature differences in a scene with customisable colours for hot objects in preference to the natural-contrast grey levels. “This can be controlled in real-time, so that users do not have to compromise when their mission changes from situational awareness to surveillance,” said RFEL.

Video Fusion will be on-show in the UK Pavilion at at DSEI in ExCel, London on 15-18 September.

steve bush

Clearer multi-spectral images for security

RFEL pseudo colour pixel depiction

Fused image (bottom), with original visible light image (top left) and infra-red original (top right

Methods of combining images from infra-red and visual cameras for security applications are becoming increasingly sophisticated.

The latest announcements in the field are ‘colour noise suppression’ and ‘pseudo colour pixel depiction’ from Isle of Wight-based RFEL. The former is said to give more natural looking results in low-light conditions, and the later can be used to highlight key temperature differences in a scene.

Fusion as a concept is simple, according to the firm: create a single video of a scene that combines feature information from two cameras – one operating in visible spectrum and one in infra-red. However, the practical reality of achieving this with anything other than a crude overlay or averaging approach is that there are significant technical hurdles to overcome.

RFEL’s fusion algorithm collection for FPGA-based processing is called Video Fusion. It includes real-time warp capability to pixel-align the slightly different views seen by side-by-side cameras.

“Although there are many applications where a simple blend of two low-resolution images is acceptable, more and more users are seeking to go to the next level, and are demanding greater definition and high feature clarity from all sensor inputs in the fused result. With Video Fusion IP, we can offer significant performance increases,” said RFEL business development manager Wayne Cranwell.

RFEL colour noise suppression

Blended image with colour noise (left) compared to enhanced multi-resolution fusion with colour noise suppression (right)

Pseudo colour pixel depiction (top or page image) gives designers the ability to highlight key temperature differences in a scene with customisable colours for hot objects in preference to the natural-contrast grey levels. “This can be controlled in real-time, so that users do not have to compromise when their mission changes from situational awareness to surveillance,” said RFEL.

Video Fusion will be on-show in the UK Pavilion at at DSEI in ExCel, London on 15-18 September.

steve bush

Microlease to sell telecoms test gear from Viavi – formerly JDSU

ViaviTest gear leasing and rental firm Microlease is to sell new telecoms equipment from Viavi, the company formerly known as JDSU.

This is the second deal Microlease has signed to sell new equipment this year, the other was with Keysight (formerly Agilent, HP).

The Viavi portfolio is broad, covering wireline and wireless test up and down physical, virtual and hybrid networks from customer premise to the core network, handsets, and content.

It will be available for purchase or rent through Microlease, which includes equipment hire firm Livingston, and now offers new and used equipment to buy, lease, rent or rent-to-buy.

Viavi equipment is to be included in Microlease’s ‘easy2source’ programme, intended to save customer capital as they hire for a fixed period followed by optional discounted purchase if there is further need.

“The incessant pace at which technology progresses, with new industry standards emerging and performance benchmarks being elevated, dictates a more sophisticated approach to test equipment procurement,” said Microlease EMEA CEO Peter Collingwood.

Microlease’s deal with Viavi is not exclusive.

Viavi has been formed to handle network and services related activities of three merged companies: JDSU, Network Instruments and UK network software company Areiso. Left out of Viavi is JDSU’s laser busness, which is now a separate company called Lumentum.

steve bush

Microlease to sell telecoms test gear from Viavi – formerly JDSU

ViaviTest gear leasing and rental firm Microlease is to sell new telecoms equipment from Viavi, the company formerly known as JDSU.

This is the second deal Microlease has signed to sell new equipment this year, the other was with Keysight (formerly Agilent, HP).

The Viavi portfolio is broad, covering wireline and wireless test up and down physical, virtual and hybrid networks from customer premise to the core network, handsets, and content.

It will be available for purchase or rent through Microlease, which includes equipment hire firm Livingston, and now offers new and used equipment to buy, lease, rent or rent-to-buy.

Viavi equipment is to be included in Microlease’s ‘easy2source’ programme, intended to save customer capital as they hire for a fixed period followed by optional discounted purchase if there is further need.

“The incessant pace at which technology progresses, with new industry standards emerging and performance benchmarks being elevated, dictates a more sophisticated approach to test equipment procurement,” said Microlease EMEA CEO Peter Collingwood.

Microlease’s deal with Viavi is not exclusive.

Viavi has been formed to handle network and services related activities of three merged companies: JDSU, Network Instruments and UK network software company Areiso. Left out of Viavi is JDSU’s laser busness, which is now a separate company called Lumentum.

steve bush

Chip upgrades old USB ports to USB-C

Microchip UTC2000 DFP app Microchip has introduced a 16pin chip that can turn products with USB 2 and 3 ports into products with the new reversible USB-C connector.

It is interposed between an existing circuit that had an old-style USB connector, and the USB-C connector replacing it.

Called UTC2000, it handles the power and ancillary connections that surround USB-C, but not data signals which are either wired directly from legacy circuit to the USB-C connector, or wired via a separate multiplexing chip. In the multiplexer case, the UTC2000 generates the necessary ‘plug orientation’ signal.

It works at both ends of a USB link: in a host (behind a USB-C ‘downstream-facing connector’ (DFC)) or in a peripheral (behind a USB-C ‘upstream-facing connector’ (UFC)).

“USB-C cable is poised to become the ‘universal’ cable, as it is capable of supplying transfer speeds of up to 10Gbit/s, 100W of continuous power and ultra-high-bandwidth video through alternate modes – all with a single connection and cable,” said Microchip. Whose chip in this case can handle 15W which is “ideal for notebooks, printers, mobile devices and battery chargers”, it claimed.

Microchip UTC2000 UFP appAlongside orientation detection, functions include: powered cable detection, configurable charging profiles (5V @ 500mA, 900mA, 1.5A or 3A), enable for host/hub port control, over-voltage monitoring, Type-C ‘audio adapter’ detection and audio adapter control. There is also a fault output pin.

Support comes from the UTC2000 evaluation kit (EVK-UTC2000) which enables both UFP and DFP types of interface to be converted to Type C.

The package 3 x 3mm QFN, 0.85mm high.

steve bush