Miran Technology was granted two national invention patents on the same day, achieving a dual breakthrough in magnetostrictive and micro-sensor calibration technologies
On August 28, 2026, Hubei Province - Hubei Miran Technology Co., LTD. (stock code: 874771) was granted two national invention patents on the same day, marking a significant breakthrough for the company in the core technology of magnetostrictive sensors and the calibration method of micro displacement sensors.
Brief introductions of two invention patents
The two authorized invention patents this time are respectively:
Patent 1: Dynamic Dual-Field Coupling Compensation Control Method and System Based on Magnetostrictive Effect (Patent No. : ZL202511782855.9)
This patent addresses the calibration challenge of micro self-resetting displacement sensors and proposes a calibration method based on deviation fusion compensation. The method divides at least three characteristic travel segments within the working stroke, synchronously collects multiple types of deviation data, and after normalization processing, builds a scene-deviation influence correspondence relationship library in combination with the application scenario. The weight distribution module is trained through orthogonal experiments, and a mapping model is established to dynamically allocate weight coefficients. Eventually, calibration compensation values suitable for the output signal type are generated and embedded in the signal processing unit to achieve real-time correction and closed-loop optimization. This method significantly enhances the measurement accuracy and reliability of micro-sensors in various application scenarios.
Technical highlights and industry value
Magnetostrictive displacement sensors are widely used in industrial automation, construction machinery, rail transit and other fields, and have extremely high requirements for measurement accuracy and environmental adaptability. The two invention patents obtained by Miran Technology this time have broken through the technical bottlenecks of the industry from different dimensions:
Dynamic dual-field coupling compensation has solved the problem of maintaining the accuracy of magnetostrictive sensors under complex working conditions such as temperature changes and magnetic field interference, providing a more reliable technical guarantee for high-precision industrial measurement.
2. The deviation fusion compensation calibration method provides an adaptive and closed-loop optimized calibration solution for the calibration challenges of micro-sensors under the interference of installation stress, thermal stress, etc., further enhancing the long-term stability and service life of micro-displacement sensors.
The technical strength of the company
Since its establishment in 2003, Miran Technology has been dedicated to the research and development and manufacturing of displacement sensors, Angle sensors, tilt sensors and lubrication systems. It is a demonstration enterprise of the Ministry of Industry and Information Technology's One-Stop application plan for sensors, a national "Little Giant" enterprise specializing in niche markets, and a national high-tech enterprise. Up to now, the company has cumulatively obtained 20 invention patents and 92 various types of patents including utility model patents.
The company has been continuously delving into the field of magnetostrictive sensing technology. Previously, it has applied for and publicly disclosed multiple related patents, including "Analog-Digital Integrated Output Circuit and Control Method for Magnetostrictive Displacement Sensors" and "Fisheye Pull Rod Type Displacement Sensor and Method Based on Magnetostrictive", forming a relatively complete technical layout for magnetostrictive sensors.
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