Ryohei Doi

Title: Ryohei Doi: Innovator in Automotive Technology

Introduction

Ryohei Doi is a notable inventor based in Aichi, Japan. He has made significant contributions to automotive technology, particularly in the area of lamp failure detection systems. His innovative approach has led to the development of a unique device that enhances vehicle safety.

Latest Patents

Ryohei Doi holds a patent for a "Lamp failure detecting device for automobile." This device consists of a lamp circuit that includes multiple lamps connected in parallel. It features a current-detecting resistance connected to a power-supply source through the lamp circuit in series. The device also includes a first voltage divider circuit and a second voltage divider circuit, which apply voltages to a comparator circuit. This circuit compares the difference between the divided voltages to produce a failure detection signal. Diodes are incorporated in both voltage divider circuits to correct the non-linearity of the current flowing through the lamps due to changes in the power-supply voltage.

Career Highlights

Ryohei Doi is associated with Kabushiki Kaisha Tokai Rika Denki Seisakusho, a company known for its advancements in automotive technology. His work has been instrumental in improving the reliability and safety of automotive lighting systems.

Collaborations

Ryohei has collaborated with notable coworkers, including Minoru Izawa and Ritsuo Suzuki. Their combined expertise has contributed to the successful development of innovative automotive solutions.

Conclusion

Ryohei Doi's contributions to automotive technology, particularly through his patented lamp failure detecting device, highlight his role as an innovator in the field. His work continues to impact vehicle safety and reliability.