Syoichi Kawamata

Title: Syoichi Kawamata: Innovator in Position-Detecting Sensors and Motor Control

Introduction

Syoichi Kawamata is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of technology, particularly in the development of position-detecting sensors and control apparatus for motors. With a total of 3 patents to his name, Kawamata's work has had a considerable impact on various applications.

Latest Patents

Kawamata's latest patents include a position-detecting sensor designed to detect the position of a moving object. This innovative sensor comprises a magnetic recording medium carried on the moving object, which has a signal track recording a magnetic signal. A first MR element is positioned nearby the magnetic recording medium, varying its internal resistance by sensing the magnetism of the medium. Additionally, a magnetic sensor electrically picks up the resistance variation of the MR element, detecting the magnetic signal. The invention also features a second magnetic signal track and a second MR element, enhancing the accuracy of the position detection.

Another significant patent is the control apparatus for a variable-speed reversible motor. This apparatus controls a motor unit that includes a variable-speed reversible main motor and a subsidiary motor for driving a fan. The control apparatus utilizes a temperature sensor circuit to monitor the main motor's temperature and generate output signals based on predetermined temperature levels. This system ensures efficient operation by energizing or de-energizing the motors as needed.

Career Highlights

Syoichi Kawamata is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to focus on developing advanced technologies that enhance the functionality and efficiency of various systems. His contributions have been instrumental in pushing the boundaries of what is possible in motor control and sensor technology.

Collaborations

Kawamata has collaborated with notable coworkers, including Hiroshi Kimura and Kunio Miyashita. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Syoichi Kawamata is a distinguished inventor whose work in position-detecting sensors and motor control has made a significant impact in the field of technology. His patents reflect a commitment to innovation and excellence, contributing to advancements that benefit various industries.