Just 18 seconds to a reliable measurement value: Integrating TEDS technology into test bench processes

Ready for TEDS: QuantumX MX840 data aquisition system

Simply convenient and long since established in PC technology: Plug and Play. No wonder, thanks to this technology installing drivers and adapting setups are things of the past at last. The advantages are clear: Plug and Play saves time and provides valuable extra quality. Exactly like TEDS.

TEDS revolutionizes measurement technology: with Plug and Measure. Simply connect the transducer to the amplifier. Ready. In just 18 seconds, the TEDS module provides reliable measurement values. This is possible because of the electronic data sheet that stores all relevant transducer data on a chip as standard. The amplifier reads the data and automatically makes the correct settings - and measurement with the correct units can start immediately without any further user interaction. This means: valuable time advantages and extra quality for test and measurement tasks in test bench environments.

Smart on site - TEDS in short

TEDS stands for the smart transducer (Transducer Electronic DataSheet) that comes with all the information required for its identification on a small memory chip as standard (e.g. manufacturer number, transducer type, serial number, calibration date, measuring point). Transducers without an integrated memory chip, too, can be easily upgraded with TEDS in the transducer cable or connector. Modern measuring systems use a standard protocol to read the information saved on the chip for configuring the amplifiers.

TEDS benefits

The identified transducer automatically configures the measuring system and enables the measured value to be quickly forwarded to the visualization or process level. This provides users with substantial advantages: TEDS brings about a considerable gain of time and quality - especially with frequently changing test and measurement tasks in test bench environments. In addition, there is a marked increase in flexibility and protection against measurement errors. Test bench manufacturers moreover benefit from unambiguous identification and convenient interchangeability of transducers resulting in reduced service and maintenance costs.

TEDS advantages at a glance:

  • Substantially shorter setup time and therefore faster measurement thanks to Plug and Measure
  • Noticeably reduced error-proneness during manual configuration of the measuring system
  • Increased quality through automated use of calibration data
  • More reliability and enhanced reproducibility of test results thanks to unambiguous identification
  • Improved transducer identification thanks to electronic link between sensor and data sheet
  • Reduced maintenance time and effort through enhanced diagnostics options (exchange of transducer)
  • Higher measurement accuracy thanks to integrated calibration information
  • Convenient transducer administration because printed data sheets are no longer required.

TEDS - en route to a new standard

Meanwhile, many companies have realized: Using smart transducers opens up interesting opportunities to increase efficiency. However, standard technologies such as IEEE1451 (TEDS) have not become widely established so far. Nonetheless, they provide the perfect answer to the challenges posed by increasingly complex systems and consistently high quality requirements in the testing environment. TEDS is a key technology ensuring continuous, smart data flow (time, quality, traceability) - covering sensor, signal conditioning, data recording, automation system, and smart data management. Therefore, introducing smart data flow or changing over to "Advanced Plug and Measure" is a promising project.

How to introduce TEDS in an efficient and profitable way

Three parties are involved in successfully introducing TEDS in measurement technology: Firstly, any objections of actual users, for example, test bench engineers, need to be thoroughly eliminated. The opportunities and advantages provided by TEDS (total cost of ownership, investment versus gain of time) need to be presented to decision makers in a comprehensible way. Then investments can be made for TEDS and existing processes can be adapted. This also means instructing suppliers accordingly.

System integrators, for example, test bench manufacturers need to standardize a concept for smart data flow. In addition, they need to provide the corresponding interfaces and tools. Manufacturers of data acquisition systems, too, will have to contribute: As consultants during the introduction of TEDS who clearly point out the opportunities offered by this technology and implement the required mechanisms.

Different requirements of test bench engineers demand reliable transducer identification: An unambiguous code together with a central database is the most efficient solution. For this purpose, TEDS needs to store a bulk of information - a text-based approach, e.g. XML (eXtensible Mark-up Language) provides maximum benefit. In general, it is now up to the parties involved to create a consistent commitment.

The future of measurement technology in one package

The QuantumX family offered by HBM is a powerful package for measurement technology. It consistently relies on TEDS. Customers will in future benefit from the many advantages of the new technology. Like, at present, a well-known German automobile manufacturer.

An aside: Which factors prevent using TEDS?

  • Not all users are familiar with the new next-generation technology.
  • Improper prejudices such as, for example "too expensive" or "no continuous support by sensor manufacturers" slow down the use of TEDS
  • Differing philosophies about the type and amount of information stored in TEDS
  • Processes that have become routine
  • Many parties involved
  • Different use case scenarios and philosophies in test bench environments

HBM Data Acquisition Systems

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