SU1226669A1 - Angle-to-digital converter - Google Patents

Abstract

The invention relates to automation and computing, is intended to convert angular displacement into code, and can be used in the technique of analog-digital conversion and software control systems. In order to expand the range of measured angles of the transducer, the angle is a code by measuring angles of more than 360 into a transducer containing a power source, a phase shifter, two zero-organs, an RS flip-flop, a generator, an And element, a counter, an output register, enter. Our D-trigger and reversible counter. When the phase shifter is rotated more than 360 ° & the total number of transitions through the zero voltage of the power source and the output voltage of the phase shifter becomes not the same and differs by an amount equal to the whole number of revolutions of the shaft of the phase shifter. The code of the total number of revolutions at the output of the reversible counter is entered into the output register upon the arrival of a pulse from the output of the first null organ, caused by the first pulse of the generator. 1 il. (L g

Description

The invention relates to automation and computing, is intended to convert angular displacement into code and can be used in the technique of analog-digital conversion and software control systems.

The purpose of the invention is to expand the range of measured angles of the transducer angle - code by measuring angles greater than 30%.

The drawing shows the functional diagram of the angle-code converter.

The converter contains counter 1, generator 2, power source 3, zero-organs 4 and 5, phase shifter 6, RS-trigger 7, element 8, b-trigger 9, reversible counter 10, output register I1.

The converter works as follows.

At the moment of going through the zero voltage of the supply voltage, the zero-organ 5 is triggered, which produces a pulse arriving at the counting input of the reversible counter 10, resetting the input of the counter and s-input RS-trigger 7. As a result, the direct output RS -trigger 7 appears the level of the logical unit, allowing the passage of pulses from the output of the generator 2 through the element And 8 to the counting input of the counter 1.

When the voltage across the output of the phase shifter 6 passes through zero, the zero-body 4 is triggered, which produces a pulse arriving at the counting input - a reversible counter and at the R input of the RS flip-flop 7. At the same time, the pulses from the output of the generator 2 the counter input 1. At the inverse output, a logical unit signal arrives at the setup input of the D-flip-flop 9, and by the arrival of the first pulse from the generator 2 output at the counting input of the D-flip-flop 9, a control signal is generated at its output according to which schestvl a recording code rotation angle output from the counter 1 and code the total number of revolutions output from the down counter 10 to the output register 11,

When you turn the phase shifter to over 360, the total number of zero crossings of the source

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3 power and output n;

The rotator 6 becomes unequal and differs by an amount equal to the number of revolutions of the shaft of the phase rotator. The code of the total number of revolutions at the output of the reversible counter 10 is entered into the output register 11 by the arrival of a pulse from the output of the first null organ 4 tied to

the first pulse of the generator 2. The introduction of the reversible counter 10 allows you to measure a whole number of revolutions of the phase shifter 6.

Introducing the connection of the output of the second null organ 5 to the reset input of the counter 1 allows zeroing its outputs in cases where the measured angle becomes greater than 360 and then resuming the counting until the signal from the null organ output 4. This The same connection is also needed to reset the counter 1 before the next conversion of the angle into a code.

I

The introduction of the D-flip-flop 9 allows you to overwrite the new value of the angle of rotation code and the code of the number of revolutions into the output register immediately after the end of the conversion process.

Claims (1)

Invention Formula The angle-code converter containing a power source, the first output of which is connected through a series-connected phase shifter and the first nuorgan body is connected to the R input of the RS flip-flop, the second zero-body whose output is connected to the S input of the RS flip-flop, the direct output of which is connected to the first input element And the output which is connected to the counter input of the counter, the outputs of which are connected to the inputs of the lower bits of the output register, the generator whose output is connected to the second input of the AND element, characterized in that, in order to expand the range of the measured angles of the converter by measuring the angles more , a D-flip-flop and a reversible counter, the outputs of which are connected to the higher bits of the output register, are entered into it, the second output of the power source is connected to the input of the second zero-organ, the output of which is connected to the reset input of the counter and the summing input of the reversible counter, the output of the first zero body is connected to the subtractive input of the reversible counter, inverse selector A.Sabo Compiled by V.Podol and Tehred V.Kadar Order 2147/59 Circulation 816 Subscription VNIOTI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5 Production and printing company, Uzhgorod, Projecto st., A. 226669 the RS trigger trigger is connected to the information input of the D-trigger, the output of which is connected to the synchronization input of the output register, the generator output 5 is connected to the synchronization input of the D-flip-flop. Proofreader M.Samborsk