This week on a visit to the Sogeti Hitech Testing Lab in Amersfoort, Holland, where visitors can see many custom sensor and controller boards designed by Sogeti Hitech, I learned that Hitech started work toembed the Critical Event Processor (CEP) from Software AG into a board. Presently, many of the sensor modules we use are “dumb” in that they send all data generated. Some sensor modules send data when there is a change aka an “event.” These two approaches work fine for low volume applications or when monitoring user behavior is important. But in high volume or high frequency applications, sending megabytes of data every second may not be practical or economical. This is where CEP offers advantages. CEP analyzes sensor data, identifies critical issues, and sends the critical data to the system for actioning. Sensors with CEP are “smart” and programmable.
Using CEP, the RPM and temperature data is only sent when an issue is detected, i.e. when a threshold is exceeded. This reduces the volume of data sent and can lower the cost of data transmission and storage. A CEP can be coupled with a small memory chip on the sensor board to store, for example, the last 10 minutes of sensor data, thus providing the company some insight into machine performance and user behavior directly before a critical event.