Andrew K Michell

Title: The Innovations of Andrew K Michell

Introduction

Andrew K Michell is a notable inventor based in Cambridge, GB. He has made significant contributions to the field of measurement technology, particularly in the development of hygrometers and dewpoint meters. With a total of two patents to his name, Michell's work showcases his expertise and innovative spirit.

Latest Patents

Michell's latest patents include a hygrometer with plural measuring zones and a redundancy system circuit. This hygrometer utilizes an electrical impedance type sensing element that features a porous moisture adsorbing layer. The electrical properties of this layer change based on the amount of water vapor it absorbs. The design includes separate measuring zones that enhance reliability by ensuring that moisture indications are only provided when at least two zones agree. This innovation allows for the detection of failures in the sensing element, distinguishing them from false moisture readings.

Another significant patent is the dewpoint meter, which features a sensor with a mirror located in a gas chamber. The mirror is cooled using a Peltier effect heat pump, and condensation formation is detected by a light-emitting diode and a photodiode. The unique design incorporates a heat pipe to avoid errors caused by heat from the heat sink affecting the mirror's temperature. This advancement improves the accuracy of dewpoint measurements.

Career Highlights

Throughout his career, Michell has worked with various companies, including Michell Instruments Limited and Mitchell Instruments Ltd. His experience in these organizations has contributed to his development as an inventor and innovator in measurement technologies.

Collaborations

Michell has collaborated with notable individuals in his field, including Kazuhiko Nagaya and Hiroshi Sakurai. These partnerships have likely enriched his work and led to further advancements in his inventions.

Conclusion

Andrew K Michell's contributions to measurement technology through his innovative patents highlight his role as a significant inventor in the field. His work continues to influence the development of reliable and accurate measurement devices.