On-line Magazine 'Sensors & Transducers' (S&T e-Digest)
(ISSN 1726- 5479)
Vol. 60, No. 10, October 2005
Table of Contents
Intelligent Digital Pressure Sensors and Transducers Based on
Universal Frequency-to-Digital Converter (UFDC-1)
The application specific paper describes a design approach for digital pressure sensors and transducers. Practical realizations are based on the Universal Frequency-to-Digital Converter (UFDC-1). By eliminating the need for ADC, the frequency (duty-cycle or PWM)-to-digital conversion schemes reduce the systems complexity. The results of such design approach are high-performance single-chip pressure sensors with truly digital output (RS-232 interface) or bus output (SPI or I2C) at significant reduction of production cost, time-to-market and simplification of the design process. Practical examples of direct interfacing of frequency, PWM and duty-cycle output pressure sensors and transducers to the UFDC-1 are given.
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Sergey Y. Yurish
Institute of Computer Sciences and Technologies, National University Lviv Polytechnic
Bandera str., 12, 79013 Lviv, UA
Tel.: +380502280003, fax: +380 32 2971641
Employment of Fluorescence Quenching for the Determination of Oxygen and Glucose
The measurement of fluorescence quenching activity of [Ru(L)3]2+ with 4,7-diphenyl-1,10 phenanthroline (dip) on silica gel and embedded in polystyrene polymers for the determination of dissolved oxygen using fiber optic probe is described here. The system is extended by immobilization of glucose oxidaze (GOD) for the determination of glucose. The objective of the work is to conquer the leaching and photo stability of fiber optic oxygen and glucose sensor and thus provides reproducibility as well as long term stability. The measurement range is 0.5 to 20 ppm and 1 to 10 mM for the determination of oxygen and glucose respectively. The glucose sensor observes the maximum activity of solution at 6.5 pH. When compared to earlier optical glucose sensors, the system confirms faster response time and it is plotted. The work creates the possibility to reduce the component size in future with out disturbing the stability.
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A. Balaji Ganesh and T.K. Radhakrishnan
National Institute of Technology, Tamilnadu, India.
Tel.: +91(431) 2501801-815, Extn: 2934; fax: +91(431) 2500133
New Triaxial Ceramic Shear ICP® Accelerometer Family Measures Vibration
in Three Orthogonal Directions
Depew, NY - The Vibration Division of PCB Piezotronics, Inc. (PCB®), introduces Series 354B, a new family of Triaxial ICP® Ceramic Shear accelerometers, which simultaneously measure vibration in three orthogonal directions. Model 354B20 has a sensitivity of 2.5 mV/g (0.255 mV/(m/sІ)) with a 2000 g (19620 m/sІ) measurement range; Model 354B21 has a sensitivity of 10 mV/g (1.02 mV/(m/sІ)) with a 500 g (4905 m/sІ) measurement range; and Model 354B22 has a 100 mV/g (10.2 mV/(m/sІ)) sensitivity with a 50 g (491 m/sІ) measurement range. Each sensor has three separate, hermetically sealed, titanium cased, single axis sensors permanently mounted onto a single, hard anodized mounting block. In addition, each sensor features three individual 10-32 coaxial connectors.
These sensors are ideally suited to legacy applications, where both the footprint of the sensor and mounting hole locations are fixed. This sensor family features built-in microelectronic signal conditioning circuitry, which offers a low-noise, low impedance output signal while permitting long distance signal transmission and simplicity of operation. These durable designs are bolt mounted, operate in - 65 to +250 °F (-54 to +121 oC) temperatures, and survive accidental shock inputs to 5000 g (49050 m/sІ) ...
Mark Amatuzzo, Product Manager
3425 Walden Avenue
Depew, NY 14043-2495
Tel.:(888) 684-0013 ext. 2706, fax: (716) 685-3886
Sensor Notification Matrix - a Revolution in Monitoring
Bangkok, Thailand. AKCP, announced the revolutionary Sensor Notification Matrix. A major innovation, the Sensor Notification Matrix is available in all AKCP Linux-based products (cameraProbe8 and sensorProbe8Linux series).
The Sensor Notification Matrix can be customized by users to transmit unique notification messages and send alerts via e-mail, SNMP trap, SMS, MMS, Text to Speech, Telephone calls and more. With the Sensor Notification Matrix, the flexibility of notification for individual sensors on the sensorProbe8Linux-X60, sensorProbe8Linux, sensorProbe8Linux-X20 and cameraProbe8 is substantially increased. Each individual sensor may have different settings which can execute any alarm. Alarms can also be escalated so that different people are notified with different messages
To protect against excessive alerts there are filter configurations on every type of notification, where the alarm can delayed for a certain period of time before being sent out. There is also an option to limit notifications in accordance with specific time of day and day of week. The AKCP designed graphical interface makes time and date filter setting very easy ...
Simple Solution for Rotary Position Sensing
Ieper - Belgium - 29 September 2005 - The MLX90316 from Melexis is a monolithic, programmable TriaxisT Hall IC designed for absolute non-contacting 360 degree rotary position sensors. In combination with an inexpensive, ordinary magnet, the MLX90316 simplifies the angular position sensing challenges found in many automotive and industrial applications.
This device represents the initial entry of a family of products resulting from the combination of Melexis automotive Mixed Signal CMOS and the patented integrated magneto-concentrator (IMCR) technology of Sentron. Melexis acquired Sentron, a Swiss high tech development company, in February 2004. This combined magnetic sensing technology is being presented as TriaxisTM technology ...
Melexis, Transportstraat 1
3980 Tessenderlo, Belgium
Tel.: +32(0) 12 67 20 02, fax: +32(0) 12 67 20 03
Analog Devices Introduces Highly Integrated Motion Sensor for Industrial Applications
Norwood, MA, 10 October 2005 - Analog Devices Inc. has announced the launch of its new iSensor™ family of highly integrated intelligent sensors designed for application-specific sensor processing. Leveraging a patent-pending advanced integration process, the flagship ADIS16201 iSensor intelligent motion sensor integrates a dual-axis MEMS accelerometer, a digital temperature sensor, power management circuitry and embedded firmware. This system-in-a-package approach results in a small, cost-effective, easy-to-use sensor solution that provides fully calibrated digital outputs for motion and inclination measurements. This combination of functionality is ideal for industrial applications, such as platform stabilization, machine vibration detection, and motion and positioning measurement ...
Analog Devices, Inc.
Modular Weigh Bridge Indicator
Ltd., Australia - introduces a new modular weigh bridge indicator. Depending upon its configuration the PT600R
weigh bridge indicator is ideal for the following applications: weigh bridges,
platforms, counting, totalizing, material testing, batching, grading. Here are some of the PT600R modular super weigh bridge indicator
details: Modular Panel Mount Indicator for general purpose use; Weigh bridge
configured; Set point configured;
PT Limited, P.O.Box 7205 Baulkham Hills BC
NSW 2153, Australia
Tel: +61-2-96807966, fax: +61-2-96807014
Precon Announces National Instruments LabVIEW Driver for Humidity Sensor
MEMPHIS, Tennessee – Precon, announced the release of a LabVIEW Plug and Play instrument driver for the Precon HS-2000D Humidity Sensor, certified by National Instruments for use with the NI LabVIEW graphical development environment. The new driver allows LabVIEW users to quickly and easily integrate the HS-2000D humidity and temperature sensor into their test, measurement and control applications.
The dime-size HS-2000D relative humidity and temperature sensor communicates over an RS-232 link via a four-pin connection with no external power required. The sensor, which is temperature compensated and factory calibrated, is accurate to +/- 2%, exhibits unmatched chemical resistance, excellent stability from -30 to +100 C, and fast response time. The HS-2000D, is ideally suited for many test and measurement applications ...
Jerry Moran, Sales & Marketing Manager
Precon Divison of Kele, Inc.
2999 Brother Blvd., Memphis, TN 38133
Tel.: (901) 388-9137, fax: (901) 388-3051
CANLab: A Universal Network Analysis Tool for Controller Area Networks
Wixom, Michigan, USA, – Accurate Technologies Inc. (ATI) announced the availability of CANLab, its new universal network analysis tool for the monitoring and logging of messages and signals on a Controller Area Network (CAN).
Designed using Microsoft’s new state of the art technology for software development known as .NET, CANLab is the latest ATI network analysis product that offers the ability to analyze CAN networks at the message and signal level. The CANLab Workspace contains all the setup information for channels, devices, databases, loggers and screens, and organizes its configuration in what is called a “Workspace”( whose screens can be arranged through a docking window management scheme). Messages and signals transmitted from any available network channel can be shown and manipulated with a variety of powerful options. Bus analysis would not be complete without providing the ability to send messages over any available network channel. CANLab advances the diagnostics of networks by facilitating the ability to re-send recorded bus traffic. Additionally, real-time data and data imported from previous recordings can be viewed simultaneously for in-depth post analysis ...
Accurate Technologies Inc.
47199 Cartier Drive, Wixom, MI 48393
New Service Uses Temporary Wireless Sensor Networks to Identify
Energy Waste and Predict Maintenance Problems
Irwin, PA, 7 October 2005 - IntelliSensor (ISS) has created a comprehensive methodology that identifies cost savings in industrial processes and commercial facilities by using wireless sensors to isolate energy waste and to predict maintenance problems before they occur. The ISS approach temporarily installs an Intelligent Wireless Sensor Network ( iWSN) under actual operating conditions to gather data in manufacturing operations, power plants, commercial buildings and temperature-sensitive facilities.
The intelligent wireless sensor networks are based on the emerging technology of very-small computers and radios married to sensors with wireless communication capability. They can gather operational data from process locations not possible before ...
Tel.: (724) 861-9953
518 Main Street Suite 201, Irwin, PA 15642
ISSYS Awarded New Patent for a Method of Making Microtubes
YPSILANTI, Mich.-Integrated Sensing Systems, Inc. (ISSYS) announced that the U.S. Patent Office has granted it a utility patent (US 6,935,010) entitled "Method of fabricating a micromachined tube for fluid flow."
This patent describes a new method of forming micromachined tubes used by ISSYS to produce drug infusion devices, microneedles, flow and fuel cell sensors and density meters. It complements other patents owned by ISSYS in the area of drug infusion and MEMS devices. In the drug infusion application the device will help reduce the hundreds of thousands of deaths and serious injuries that occur each year due to medication delivery errors. The micromachined ISSYS flow sensor can detect the correct drug dose, dose rate, volume, concentration and indicate if the infusion line is blocked or has an air bubble in it ...
Integrated Sensing Systems Inc. (ISSYS), Ypsilanti
734-547-9896 Ext. 119, fax: 734-547-9964
American Sensor Technologies Named Among New Jersey’s
Fastest Growing Technology Companies
Landing, NJ, - American Sensor Technologies, a NJ-based manufacturer of state-of-the-art, MEMS-based pressure sensors, transducers, and transmitters, ranked twenty-fifth in Deloitte’s Technology Fast 50 Program for New Jersey, a ranking of the 50 fastest growing technology companies in the state by Deloitte & Touche LLP. Rankings are based on the percentage of growth in fiscal year revenues over five years, from 2000 – 2004. Last year, AST placed fifth in the ranking.
“With our innovative sensor technology and experienced team of engineers, American Sensor Technologies has been very successful in growing both its revenue and customer base in the highly competitive global sensor market,” states Karmjit S. Sidhu, Vice President Business Development, American Sensor Technologies. “During the past year, we also acquired the capital stock of Macro Sensors, LVDT manufacturer innovators. Through this acquisition, AST can offer a greater depth of sensor products and expertise to better serve its client base and gain even greater market share.” To qualify for the Technology Fast 50, companies must have base-year operating revenues of at least $50,000 and current-year operating revenues of at least $1,000,000 in 2004 ...
Karmjit S. Sidhu,
American Sensor Technologies
Multisensor Data and Information Processing
(Special Issue, August 2005)
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