Detlef Griessman

Title: Detlef Griessman: Innovator in Utility Meter Technology

Introduction

Detlef Griessman is a notable inventor based in West Lafayette, Indiana, recognized for his contributions to utility meter technology. With a total of two patents to his name, Griessman has made significant advancements in the field of fault detection systems for utility meters.

Latest Patents

Griessman's latest patents include a method and system for hot socket detection and tampering detection in a utility meter. This innovative fault detection system is designed to measure electrical energy consumed by a load. It incorporates at least one current transformer, a temperature sensor, and a processor. The current transformer generates a current measurement signal based on the current provided to the load, while the temperature sensor produces a temperature signal based on the detected temperature of the utility meter. The processor, connected to both the current transformer and the temperature sensor, generates a phase angle value corresponding to the phase angle of the current measurement signal. It also generates a fault signal when the detected temperature exceeds a predetermined value and indicates detection of a leading current.

Another significant patent involves detecting current measurement tampering by analyzing the current transformer’s parallel impedance. This method identifies errors in a meter equipped with a current transformer, a burden resistor unit, and a resistive path switchably connectable across the burden resistor unit. The process includes obtaining a first value representative of the voltage magnitude across the burden resistor unit while the resistive path is decoupled. After closing a switching element to couple the resistive path, a second value is obtained. The processing circuit then determines whether an error exists based on these values and at least one predetermined stored value.

Career Highlights

Griessman is currently employed at Landis+Gyr, Inc., a company known for its innovative solutions in energy management. His work focuses on enhancing the reliability and accuracy of utility meters, contributing to the efficiency of energy consumption monitoring.

Collaborations

Throughout his career, Griessman has collaborated with notable colleagues, including Matthew Eric Kraus and Frank J Boudreau, Jr. These partnerships have fostered a collaborative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Detlef Griessman stands out as a key figure in the field of utility meter technology, with his patents reflecting a commitment to improving energy measurement systems. His work