| 摘要 |
FIELD: measuring equipment.SUBSTANCE: invention relates to measurement equipment, particularly to calibration methods and measurement devices based on bridge magnetosensitive sensor, and can be used in automotive industry, construction, aviation and rocket engineering and other fields where there is need to measure angles of up to 90° using sensors on basis of magnetoresistors or Hall elements. Angle measurement device based on bridge magnetosensitive sensor includes two bridges turned relative to each other by 45°, two amplifiers, two DAC, ADC and a computing device. Amplifiers are connected to outputs of bridges of sensor, zero offset inputs of amplifiers are connected to outputs of compensation DAC, inputs of which are connected with computer. Input of ADC is connected to output of first amplifier, and input of reference voltage ADC is connected to output of second amplifier. Computer has memory programs and calibration data, as well as digital and analogue interfaces.EFFECT: technical result consists in measurement of angle in range from 45° to -45° in one conversion cycle of ADC using one ADC.2 cl, 3 dwg |
