Shoichi Oka

Title: Innovations of Shoichi Oka

Introduction

Shoichi Oka is a notable inventor based in Matsuzaka, Japan. He has made significant contributions to the field of fire detection and particle sensing technologies. With a total of 4 patents to his name, Oka's work reflects a commitment to enhancing safety and efficiency in various applications.

Latest Patents

One of Oka's latest inventions is a fire detector unit. This improved device features a plastic base that defines a smoke chamber for detecting smoke density through light scattering caused by smoke particles. The base is equipped with a circuit board that houses a light-emitting element, a light-receiving element, and other components that form a fire-detecting circuit. This circuit generates a fire warning signal based on the detected smoke density. Additionally, a metal-made electromagnetic shield is molded into the base to protect the light-receiving element from electromagnetic radiation noise. The shield includes a ground terminal for connection with the circuit board's ground line, and terminal pins are molded into the base for electrical and physical connection to the circuit board.

Another significant invention by Oka is a particle sensor. This sensor incorporates gain control and offset voltage adjustment to provide a consistent output indicative of particle density, compensating for background noise. The gain control and offset adjustment are achieved through digitally controllable variable resistor networks with multiple switches. A memory module is included to store instruction data for controlling the switches, which is crucial for the sensor's performance. The particle sensor also features a memory interface that allows the use of two types of memory means: an intelligent memory module composed of EEPROM and a microcomputer, and a standard memory module consisting of EEPROM.

Career Highlights

Oka is currently employed at Matsushita Electric Works, Ltd., where he continues to innovate and develop new technologies. His work has had a significant impact on the safety and reliability of fire detection systems and particle sensing devices.

Collaborations

Throughout his career, Oka has collaborated with talented individuals such as Takayuki Nishikawa and Takeshi Wada. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Shoichi Oka's contributions to fire detection and particle sensing technologies demonstrate his innovative spirit and dedication to improving safety. His patents reflect a deep understanding of the challenges in these areas and a commitment to finding effective