CONVERTER “ANGLE-CODE" OF ANGLE INDUCTION SENSOR Russian patent published in 2018 - IPC G01B7/30 H03M1/20 

FIELD: measuring equipment.

SUBSTANCE: invention relates to metrology and can be used for measurement of angular movements, namely, for converting a limited angle of rotation of the shaft into a digital code while controlling the angular position of the moving parts of the adjustment object. Angle-code converter of the induction linear angle sensor (ILAS) contains a sine wave generator, output of the ILAS through two phase-connected differential amplifiers is connected to the inputs of the first and second ADCs. Control and synchronization unit is executed on the microcontroller containing built-in ADC, DAC and serial UART channel. Digital adder, low-pass filter and the reference oscillator are programmed on a microcontroller. Sine wave generator contains an analog carrier frequency filter and a power amplifier. Digital output signal of the angle-code converter from the UART output of the microcontroller is output via the serial RS-485 channel. Work with serial inductive ILAS is provided, for example, type 15D-32B and 45D-32B1, simplification of the converter circuit and improvement of the accuracy of the angle measurement are achieved. When using an inductive angle sensor type-15D-32B, the operating range of angles is plus / minus 6°, lowest-order bit of the angle-code converter is about 12'' (12 bits).

EFFECT: technical result of the claimed invention is to provide operation with serial inductive ILAS, simplify the converter circuit and improve the accuracy of the angle measurement.

1 cl, 2 dwg