Monday, March 10, 2014

Electromagnetic Braking Systems in Wind Turbines

INTORQ brakes have been in use for many years in wind power installations and special requirements of this field of application are high reliability, long maintenance cycles, resistance to environmental influences and a tight braking-torque tolerance.

For pitch drives, we have developed stored-spring brakes as holding brakes that have to display a specific mode of emergency manner even after a failure. The brake casing is encapsulated or suitable for tachometer mounting.

In azimuth drives, brakes from our modular BFK458 series are used. They keep the turbine aligned in the wind. In the event of a fault, the brakes have to act as a friction clutch to enable the gondola to move with the wind.

In the offshore area, the requirements for corrosion protection and robustness are very high. Encapsulated version with special surface protection are used here.

Thursday, February 13, 2014

Leuze Extremely Tough 328 Series Sensors

Leuze electronic is releasing new cylindrical sensors for particularly difficult conditions.

The new 328 series is based on the optical platform of the well-known stan-dard 318B series and, thanks to the metal sleeve in the housing, offers hig-her mechanical strength than the standard product made of high-quality plastic. The operating principles available in the new series, which range from throughbeam photoelectric sensors to retro-reflective photoelectric sensors to light scanners with sensitivity adjustment via teach button, combine all relevant designs with cable or plug connection. An adjustable retro-reflective photoelectric sensor model with polarization filter for particularly tricky applications is also included in the product line.

With ranges of up to 15 m (throughbeam photoelectric sensors), 6 m (retro-reflective photoelectric sensors) and 1 m (light scanners), they fit perfectly in a variety of applications for object detection in materials handling and packaging technology. The cylindrical sensor is very well-received; these sensors are especially popular for integration into constricted environments and into assemblies in transport systems or other machines. In many pro-duction processes and internal transport systems, these optical sensors are used for the detection of objects and thereby control processes or partial steps. The highly-visible light spot facilitates alignment and two antivalent outputs expand the application options.

New Leuze Sensor Series 18B

With the 18B sensor series, Leuze electronic expands its extensive line of sensors in the area of high-performance sensors for transparent media.

Compared to its predecessor – the 18 series – the new sensor scores with a more robust housing, smaller dimensions, shorter response time, higher switching frequency, improved adjustability of the switching point and a tracking function for extending the cleaning interval (50x). Due to the new features, it is possible to reliably detect fast, small, thin and transparent objects, such as foils, even under extreme environmental conditions – a true plus, for example, in the beverage industry.

The visibility of the light spot and the LED display have also been improved, thereby simplifying start-up and operation. The optics minimize light beam tolerances to the extent that mounting can be quickly performed without alignment. The electrical connection is established either via the M12 plug or the integrated cable.

Flomotion Pumps Hard-to-Handle Chemicals with the SMV

Flomotion Systems develops and manufactures unique seal-less peristaltic pumps that eliminate loss-of-prime failures in chemical feed applications. Typical markets served include water & wastewater treatment, chemical, food & dairy, pharmaceutical, pulp & paper, energy management, power and irrigation.

A long-time user of the Lenze drives, Flomotion incorporated the economical, compact and lightweight SMVector in the design of their 2001HEC Series pumps. The Flomotion 2001HEC Series are rugged, reliable and cost effective industrial hose pumps built to succeed in harsh industrial environments. Several features of the SMVector make it a perfect fit for the job, including a removable terminal cover, easy access for control and power wiring and the fact that it can handle a wide range of operating temperatures from -10 to 55ºC. Last but not least, according to Flomotion, the SMVector offers better protection against electrical shock than any other NEMA 1 controller on the market.

Mounting the SMVector controller directly to the pump allows Flomotion to optimize precious panel space and offer its customers outstanding convenience. The unique Electronic Programmable Module (EPM) stores the drive’s parameter configuration, greatly simplifying initial setup.

Centrifugal and pumping applications, especially those moving fluids or a mixture of wet and dry ingredients, present a challenge because the speed is affected by the load. Fluid moving applications require "variable speed" - a drive and motor that can produce the necessary horsepower to move the load at a constant speed. The motor will draw from the drive the amount of current it needs to 'do the job'. The SMVector drive works well in this type of application because the speed can be controlled tightly in vector mode (more torque/less speed) or loosely in V/Hz mode to determine just the right amount of speed.

Wednesday, October 24, 2012

Announcement for "Mechanical 3D linear array probe" Development

Nihon Dempa Kogyo Co.Ltd. today announced development of a "Mechanical 3D linear array probe" for advanced 3D/4D imaging applications in diagnostic ultrasound.This probe is targeted at breast scanning, but is also suitable for other clinical applications requiring high resolution 3D imaging over a wide field of view.

The mechanical 3D linear array probe is of novel design, with a sliding linear scan of a linear array. NDK's unique linear slide scan, the first of its type in the world, was developed to improved lateral resolution and increase diagnostic function compared to conventional circular scan geometries.

Additionally, the mechanical 3D linear array probe has a flat surface, allowing more even contact with soft tissue such as the breast.

NDK will start shipping a samples of this probe from June 2008.

The development of Ultra-compact (2520-size) Voltage Controlled Crystal Oscillator

NIHON DEMPA KOGYO CO., LTD. has developed an ultra-compact Voltage-Controlled Crystal Oscillator NV2520SA.

With the spread of digital broadcasting-capable mobile devices, there is a growing need for a compact and high-performance VCXO as a clock oscillator for the processing of complex image signals.

In order to meet this need, with the use of the high density mounting technology, we have developed NV2520SA , which is one of the industry’s smallest package (Dimension: 2.5 × 2.0 × 0.8mm). Although it is ultra-compact, it has Frequency control range "Min. ±100×10-6". Also, it has a wide Operating temperature range of from - 40 °C to +85 °C, and can be used under a wide variety of environmental conditions.

The development of an Enable/Disable(*) function-equipped TCXO for GPS applications

NIHON DEMPA KOGYO CO., LTD. has developed an ultra-compact Temperature Compensated Crystal Oscillator NT2016SB.

Recently, there has been a growing need for GPS-equipped mobile phones and mobile terminals. Amid the need for miniaturization, an extremely high precision has been required for the GPS function on these devices, and the need to reduce the power consumption has increased due to the multifunctionality of mobile phones.

In order to meet these needs, we have developed an ultra-compact, light and low profile (0.8 mm max) TCXO NT2016SB which has highly stable frequency-temperature characteristics and operates with lower power consumption due to the Enable/Disable function.

The development of the world's first* ultralow power-driven (0.8V min) crystal clock oscillator

NIHON DEMPA KOGYO CO., LTD. has developed the world's first environment-friendly, miniaturized (2.5 x 2.0 x 0.9 mm) and ultralow power-driven crystal clock oscillator “NZ2520SF”.

Recently, eco-friendly products have become popular in various applications, and the move towards energy conservation has accelerated. For this reason, there is a strong demand for electronic components constituting these products to be environment-friendly, and due to the requirements for long-life battery and multi-functionality, energy conservation through both miniaturization and power saving is desired especially in compact devices such as mobile phones or handheld devices. In order to meet these market needs, we have developed a crystal clock oscillator that can be operated at ultralow power (0.8V min).

“NZ2520SF” is the world's first* 2.5 x 2.0 mm type crystal clock oscillator that can be operated at ultralow power (0.8V min). In comparison with existing crystal clock oscillators, the operating voltage is about 50% lower and the current consumption is at least 40% lower (Fig.1). This is equivalent to approximately 70% reduction in power consumption.

This product helps achieve low-power operation, has significant increase in battery life and reduction in environmental load especially in mobile devices such as multi-functional mobile phones, silicon audio players, PND (Personal Navigation Device)and notebook computers. Due to its wide frequency range (1.5 to 50MHz), other than mobile application devices, it can be used in a wide range of electronic devices, leading to environmental load reductions in various fields in the electronics industry.

NDK Develops VCXO with Low Phase Jitter Improving Signal Quality of Optical Communication Networks

NIHON DEMPA KOGYO CO., LTD. (President : Hiroshi Takeuchi) has developed and started to ship mass-produced compact high frequency range type VCXO (Voltage-Controlled Crystal Oscillators).

Miniaturization of devices is required at high-speed wireless broadband networks and base stations for mobile communications from the perspective of establishing low-cost installations and operation. High frequency clock signals between 600 MHz to 700 MHz are required for the optical transmission devices and optical multiple-wavelength transmission devices used in these base stations and core networks.

In order to meet the market requirements, NDK has developed the “NV7050SA” VCXO. It handles high frequency and has a small package, 7.0 × 5.0mm (one-tenth volume compared to the conventional products) while maintaining the same frequency stability and pull-ability range as the conventional products. Furthermore, ultralow phase jitter is achieved at a few tens of femtoseconds, which is an order of magnitude lower than previously developed products.

PLL frequency multiplication is generally used to obtain high frequencies in the range of hundreds of MHz, however the drawback is phase jitter is magnified during this process which can significantly degrade the quality of transmission signals. Through NDK's proprietary technical knowledge, high frequency fundamental crystal units were designed and applied to obtain high frequencies without the need for PLL frequency multiplication processing. This has enabled the phase jitter to reduce to values of one quarter to one fifth the level of phase jitter produced by conventional PLL multiplication type VCXO.

MSPDEBUG – Power profiling with the MSP430-JTAG-ISO-MK2

MSP430-JTAG-ISO-MK2 has power profiling functionality which can be used from MSPDebug. When a chip is running, the debugger continuously captures current consumption and MAB (program counter) samples, which can be read and analysed.

As of 4 Oct 2012, MSPDebug contains support for the following power profiling functionality:
  •     Basic statistics (average current, run time, charge consumption).
  •     Time-domain analysis, including exporting of raw samples to CSV format.
  •     Disassembly annotations, which show power consumption on a per-instruction basis.
  •     Hotspot/profile analysis to discover which functions are consuming the most power.
The driver for this device supports both raw USB and tty access, and can be used to perform firmware updates.

MSPDEBUG is open source tool, for debugging MSP430 microcontrollers. The project is hosted on Sourceforge

The next logical step is to create IDE with MSPGCC+Eclipse+MSPDEBUG plugin for one completely free development environment for MSP430 supporting all MSP430 devices and JTAGs on the market +  Power Profiling feature if you use MSP430-JTAG-ISO-MK2. The IDE will support Linux and Windows and we hope to be able to demonstrate it at Electronica 2012 in November.

FRIDAY FREE BOARD QUIZ ISSUE #11 PRIZE IS MOD-IO2

MOD-IO2 is UEXT module with two relays and 7 GPIOs, which can work with any of our boards with UEXT connectors.As MOD-IO2 are stackable you can have as many IOs as you want to your UEXT board by simply plug together MOD-IO2 boards, so you can have 2,4,6 etc controllable relays.
The modules talk via I2C and the protocol is very easy. You can command the relays and read the GPIO status.

Everyone have chance to win this board if answer correctly our Quiz question.

Today at 17.00 o’clock our local Bulgarian time (GMT+3) we will post on Twitter our question.

You have one hour to reply to our tweet with the correct answer.

At 18.00 o’clock we will count the correct answers and ask random.org to generate random number in range then anнounce the winner and ship the board by airmail next Monday.

Working with iMX233-OLinuXino and MOD-IO2

UEXT connector allow many and different devices to be attached to it.

To may they all work together without collisions I2C protocol is used to address them.

The protocol is like this:



– this is the unique OLIMEX I2C address which is 0×48 this address is used to talk to all Olimex UEXT modules.

– this is the ID of every UEXT module TYPE which is attached to the I2C bus, for instance if we want to talk to MOD-IO2 this ID is 0×02

– as we can have many MOD-IO2 connected on the I2C but this is the MOD-IO2 address number which we talk to, each MOD-IO2 by default have address 0xA0, this address can be re-programmed to other value so many MOD-IO2 to be connected together.

– allow specific command to be sent to the UEXT module like switch relays, read GPIOs, read AINx etc.

Set-relay command is 0×40, Set-new-address command is 0xB0, read AIN0 is 0×10 read AIN7 is 0×17 and so on.



if we use I2CTOOL we can talk easily to MOD-IO2 connected to iMX233-OLinuXino, for instance to switch both relays ON we can do:

$ ./i2c-tool -w 0 0×48 4 0×02 0xA0 0×40 0×03

where -w means I2C write, 0 – this is I2C channel we write to channel 0, 0×48 is OLIMEX I2C address, 4 is number of bytes to follow, 0×02 is MOD-IO2 ID, 0xA0 is default MOD-IO2 address, 0×40 is set-relay command, 0×03 is set both relays

MOD-VGA (Gameduino in Arduino + UEXT form factor)

Gameduino is open source game shield for Arduino compatible boards and you can see number of games implemented on this shield.

We love it and decided that we have to make one but to be available for our boards with UEXT connectors, and this is how we made MOD-VGA.

What we add more to MOD-VGA is PS2 keyboard connector so one who want to use keypad or keyboard while play the games now have access to one.

Also original Gameduino is restricted to 400×300 pixels with 512 colors as use internal FPGA RAM as video memory. We decided to add optionally 32MB of SD-RAM as option to MOD-VGA so higher resolutions and more colors to be available (with proper new FPGA firmware). If someone is experienced with FPGA and want to play with MOD-VGA trying to implement higher resolutions please let me know I will send you board.

Originally MOD-VGA was intended mostly to run with Duinomite as it is monochrome, Ken Segler worked for a while on this idea but later on he got busy with other stuff so he never completed the MOD-VGA support in DuinoMite BASIC firmware.

So for the moment you can use MOD-VGA with Arduino and compatible.

LDmicro will turn PIC-IO, AVR-IO, AVR-IO-M16 and MOD-IO into PLC

LDMicro created by Jonathan Westhues is nice free program which can turn any PIC or AVR microcontroller in PLC with ladder logic.

The list of the supported devices is:
  •     PIC16F628(A), PIC16F88, PIC16F819, PIC16F877(A), PIC16F876(A), PIC16F887, PIC16F886
  •     ATmega128, ATmega64, ATmega162, ATmega32, ATmega16, ATmega8
LDmicro allow you to make your ladder schematic then to generate HEX code which does the ladder logic implementation in program code which you program to your AVR or PIC and got the ladder logic functionality.

LDmicro have interfaces in 7 languages.

PIC-IO supports PIC16F628 and AVR-IO supports ATMega8 you can use these boards with LDmicro, AVR-IO-M16 and MOD-IO have ATmega16 on it so they are ready to go.

You will need also programmers to load the generated HEX files to the boards, for PIC we recommend PIC-KIT3 and for AVR we recommend AVR-ISP-MK2

LDmicro adds nice functionality to PIC-IO and MOD-IO, AVR-IO, AVR-IO-M16 and offer yet another option to program these boards.

FRIDAY FREE BOARD QUIZ ISSUE #12 PRIZE IS MOD-VGA

MOD-VGA is open source hardware project based on the popular Gameduino shield for Arduino. What we improved here is to add PS2 keyboard as what is Game play without keyboard anyway? and to add option for 32MB SDRAM on board which allow firmware to be improved at later stage to support higher resolutions and more features.

Right now MOD-VGA runs the normal Gameduino firmware and act as normal Gameduino.

Everyone have chance to win this board if answer correctly our Quiz question.

Today at 17.00 o’clock our local Bulgarian time (GMT+3) we will post on Twitter our question.

You have one hour to reply to our tweet with the correct answer.

At 18.00 o’clock we will count the correct answers and ask random.org to generate random number in range then anнounce the winner and ship the board by airmail next Monday.