Abstract:
The present invention relates to a method for measuring positions by correcting temperatures in a precision device for measuring positions using a magnetoresistive sensor and a magnetoresistive sensor module mounted on the precision device to measure positions using the same. The present invention provides a method for measuring the positions of a moving unit of a precision device to be corrected according to temperatures comprises a step of setting a magnetoresistance reference value (step 1); a step of storing a measured magnetoresistance reference value according to measured temperature changes of the precision device (step 2); a step of setting and storing a magnetoresistance value for different temperatures (step 3); a step of repeatedly setting and storing magnetoresistance values by repeating the step 2 and 3 when temperature changes are detected while the precision device operates during the step 2 and 3 (step 4); and a step of measuring the position of the moving unit (step 5). Also, the present invention provides a temperature correctable magnetoresistive sensor module comprising a magnetoresistive sensor (100), a variable amplification amplifier module (300), an A/D conversion unit (400), a microprocessor (500), a controller (510), a memory storage device (600), and a temperature sensor (700).
Abstract:
PURPOSE: A double shock wave inspecting device is provided to effectively inspect the shock resistance of equipment receiving double shock waves. CONSTITUTION: A double shock wave inspecting device comprises a speed generator assembly (1) and a trolley assembly (2) for collision. The speed generator assembly is operated by oil pressure or air pressure and generates a required speed by pushing a piston with high pressure. The trolley assembly for collision collides with a test bed (3) at a high speed, thereby generating positive acceleration, which is a primary waveform, by a spring. The trolley assembly for collision collides with a secondary waveform generator assembly (4), thereby generating negative acceleration, which is a secondary waveform, by the spring and a variable damper type waveform regulator assembly (5) operated by oil-and-air pressure or an MR fluid.
Abstract:
PURPOSE: A synchronization monitoring system for railroad facilities is provided to improve the efficiency of facility management by constructing effective comparison data for the safety inspections of railroad facilities. CONSTITUTION: A location confirmation part(300) is composed of a dynamic movement measuring device(310), a distance measuring sensor(320), a speed measuring device(330), a high speed precision clock(340), and a data processing device(350). The dynamic movement measuring device senses the movement of a train. The distance measuring sensor measures the movement location of the train. The data processing part processes data received from the dynamic movement measuring device, speed measuring device, high speed precision clock, or distance measuring sensor.
Abstract:
PURPOSE: A torque generating apparatus using a rare-earth permanent magnet is provided to rapidly detect a torque change according to a steering of an orbit car and a torque diminishment is recompensed so that an efficient experiment is possible. CONSTITUTION: A torque generating apparatus using a rare-earth permanent magnet(100) comprises a main driving motor, a torque generator, a slip ring(310), a torque meter, a torque correcting unit, and a power supply unit. The main driving motor transmits power to the shaft where car wheels are. The car drives a track or uses a caterpillar. The torque generator is installed in the rotary shaft. The slip ring is installed in the rotary shaft. The torque generator selectively comprises a central control unit.