Intelligent RFID transponder takes over monitoring function

RFID transponders with external sensors

The HARTING RFID Embedded Transponder transfers ID and external sensor data in passive mode and consequently builds a bridge to self-configurable processes. Mobile parts that do not have their own constant energy supply can also be comprehensively monitored.

The HARTING RFID Embedded Transponder (Radio Frequency Identification) has been given an expanded function: In addition to recognizing IDs, it can also transfer sensor data. This means new application fields for the technology, such as protecting chair and gondola lifts.  
The integrated UHF (Ultra High Frequency) technology has the function of acting as a direct control system in vertically integrated production processes in the sense of Industry 4.0. In this environment, it is important for an object equipped with an RFID transponder to be able to determine both the unambiguous ID and its current status with the help of connected sensors and also to be able to transfer this status without cables.
The major advantage of the UHF-based control system is its passive operation which means that the transponder can address external sensors connected to it at a range of up to 2.5 meters and also transfer additional data to the reader in passive mode. Passive mode means that the system does not need an energy source on the transponder side. The system draws its energy from the RFID reader.


Summary

The innovative HARTING RFID Embedded Transponder provides substantial advantages for numerous customer applications: Mobile units that do not have a constant energy source can be comprehensively monitored with the control system's help. And all this with absolutely no maintenance or wear and tear, because the transponder contains no moving components.


Application: RFID transponder for chair lift

The RFID solutions offer advantages best illustrated with examples from use in chair and gondola lifts: The restraining bars on the chairs protect the passengers and consequently these bars are constantly monitored. In the past, this constant checking required enormous overhead, while RFID now makes it simple to implement this safety requirement without major modifications or costly maintenance.

A chair is not permitted back onto the line until it has been electronically verified that the bar is closed. RFID transponders make this a plain and simple matter: The bar's status changes each time a passenger is loaded or unloaded at the stations. To determine the status, the HARTING RFID Embedded Transponder has digital inputs that are connected via cable to limit switches. Each input can be "open" or "closed" depending on the safety bar's position. The transponder polls this status and transfers it to the reader. The downstream system (PLC) evaluates the data and uses it to control the cableway's operation.