TEDS, or Transducer Electronic Data Sheet, is a set of electronic data in a standardized format defined within the IEEE-P1451.4 standard. This data specifies what type of sensor is present, describes its interface, and gives technical information such as sensitivity, reference frequency, polarity, etc.
Yes. "Plug and Play" sensors refer to the emerging IEEE P1451.4 specification of sensors that contain calibration or configuration information in memory on the sensor. This information is normally stored in an EEPROM chip attached to a transducer. By having this chip, the transducer can identify and describe itself to the network, thereby easing automatic system configuration. Let's say you have a Wilcoxon Research TEDS-compatible accelerometer. Using the proper software, any other Wilcoxon Research IEEE P1451.4-enabled accelerometer could be swapped in, would self-identify, and would work appropriately.
Benefits that can be experienced now include:
Advantages that will be available in the future include:
Yes. A TEDS-capable accelerometer will function in legacy systems where no TEDS capability exists. In such legacy systems, TEDS-capable accelerometers will function identically to a traditional IEPE accelerometer. Diodes provide isolation of the digital TEDS circuit from the standard analog circuit.
Virtual TEDS is an online library of data sheets developed by National Instruments (www.ni.com) that contain the same information that would be found in an EEPROM TEDS, but exist for sensors not containing the EEPROM. This would define plug-and-play capability for legacy sensors. As a National Instruments Plug and Play Sensor Partner and a National Instruments Alliance Member, Wilcoxon Research has contributed the data for several of its most popular sensors to the Virtual TEDS database.
|Manufacturer||Meggitt (Maryland), Inc.|
|Model||Entered as data|
|Serial Number||Determined during calibration|
|Calibration Date||Determined during calibration|
|Sensitivity||Determined during calibration|
|Reference Frequency||Determined during calibration|
|Polarity||Determined during calibration|
|High-pass Cut-off Frequency||Nominal|
|Low-pass Cut-off Frequency||Determined during calibration|
|Resonance Frequency||Determined during calibration|
|Reference Temperature||Determined during calibration|
|Sensitivity Direction||Determined during calibration|
|Measurement Position ID||N/A|
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