Chengdu Hongming Electronics Applied for Linear Displacement Sensor Related Patents, Inductive Sensor Measures Displacement, Multiple Advantages Combined to Reduce Costs and Promote Popularization

March 25 News: According to information from the National Intellectual Property Administration, Chengdu Hongming Electronics Co., Ltd. has applied for a patent titled “Linear Displacement Sensor Based on Inductive Encoder and Displacement Measurement Method.” The application publication number is CN121720353A, the application number is CN202511855107.9, the publication date is March 24, 2026, and the application date is December 10, 2025. Inventors include Lu Teng, Li Pengfei, Bai Wei, Hu Youpu, Kang Tian’ao, Du Shuang, and Luo Jingjing. The patent agency is Chengdu Huachen Zhihui Intellectual Property Agency Co., Ltd., with patent agent Li Yang. The classification code is G01B7/02.

Patent Abstract: The invention discloses a linear displacement sensor based on an inductive encoder and a displacement measurement method, belonging to the technical field of linear displacement sensor manufacturing. The sensor includes a housing, a pull rod, and a transmission belt, first and second pulleys, first and second inductive encoders, a circuit board. The rotor of the first inductive encoder is connected to the first pulley, the rotor of the second inductive encoder is connected to the second pulley, and the transmission belt is simultaneously mounted outside both pulleys. The measurement method includes the steps of: starting; calculating; computing; calculating coefficient K; and further calculations. The invention offers advantages such as long travel range, high precision, high reliability, and small size. It also maintains stable and reliable operation in harsh environments, significantly extends service life, and has high vibration resistance, ensuring measurement accuracy over long distances, reducing costs, and facilitating widespread adoption.

Hongming Electronics was established on October 8, 1981, and listed on the Shenzhen Stock Exchange on March 25, 2026. Its registered and office addresses are both located in Chengdu, Sichuan Province. The company is a leading domestic resistor and capacitor component enterprise, focusing on the research and production of new electronic components, with strong technical capabilities and high investment value.

Hongming Electronics mainly engages in the research, production, and sales of new electronic components centered on resistor and capacitor devices, providing high-performance, high-reliability products. It also involves precision sub-components, with applications in consumer electronics, new energy batteries, and automotive electronics. The company’s industry classification is National Defense Military Industry - Military Electronics II - Military Electronics III, with concept sectors including small-cap, margin trading, and sensors.

In 2025, Hongming Electronics reported revenue of 2.617 billion yuan, ranking 1st/3rd in the industry, far surpassing the second-place Quanxin Co., Ltd., which had 839 million yuan, and exceeding the industry average of 1.202 billion yuan and median of 839 million yuan; net profit was 461 million yuan, also ranking 1st/3rd, significantly ahead of second-place *ST Tianwei’s 30.36 million yuan, above the industry average of 1.74 billion yuan and median of 30.36 million yuan.

Recent patent applications by Chengdu Hongming Electronics Co., Ltd. include:

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