SU1420668A1 - Displacement digitizer - Google Patents

Abstract

The invention relates to automat. tick and computing technology and can be used to connect analog information sources with a digital computing device. In order to simplify the converter containing the displacement sensor, the EXCLUSIVE element, the inverter 3, the delay element 6, the elements 1 and 9, the reversible counter 10, the inverters 4, 5 and the delay element 7 are introduced. In sensor 1, the movement is converted into two electric signals of the square wave type, shifted by Zu bit t and the bit in phase one relative to the other by a quarter period T. When the direction of the move changes, the relative phase shift of the output signals of sensor 1 changes by 180. Output signals element And 8 are formed when the unit signals of inverters 3,4,5 and element 7 coincide once per period T when moving in one direction and arrive at the input of the addition of a reversible counter 10. The output signals of element And 9 are formed i and the coincidence of the unit signals of the inverter 5, the delay elements 6.7, and the signal from the first output of sensor 1 once during the period T when moving in the other direction and fed to the input of the subtraction of the reversible counter 10. Signals at the output of element 2 and the first output of sensor 1 represent the two-digit position code of the position of sensor 1. The code of the highest movement bits is formed in the reversing counter 10 and is a natural continuation of the two-digit position code of the position of sensor 1. 2 Il. pth bit d C (D INS O 05 05 00 3rd bit d

Description

The invention relates to automation and computer technology and can be used to communicate analog information sources with a digital computing device.

The aim of the invention is to simplify the converter.

Figure 1 shows a block diagram of a converter; figure 2 - the timing diagram of his work.

The converter contains a displacement sensor 1, an EXCLUSIVE OR 2 element, inverters 3-5, delay elements 6 and 7, elements 8–9, and a reversible counter 10.

A: The converter works as follows.

In F51tchik 1, the movement is converted into two electrical signals (Fig. 2 a, b) of the meander type, phase-shifted relative to the other by a quarter period T. When the direction of movement changes, the relative phase shift of the output signals of sensor 1 changes by 180 ° The magnitude of the delay of elements 6 and 7 is chosen based on the duration of the output pulses of the elements. Both 8 and 9, arriving at the inputs of the reversible counter 10. Output: the signals of the element And 8 (fig.2i) are formed when the unit signals of inverters 3-5 (fig.2 h, c, d) and the delay element 7 coincide (fig .2 g) once per period T when moving in the OD direction and arrive at the input of the addition of the reversible counter 10. The output signals of the element And 9 (Fig. 2k) are formed when the unit signals of the inverter 5 (Fig. 2d) coincide. 6 and 7 of the delay (FIG. 2 e, g) and the signal from the first output of sensor 1 (FIG. 2a) once per period T when moving in the other direction and along step into the subtraction input of the reversible counter 10. The signals at the output of element 2 (figure 2) and the first output of sensor 1 (figure 2 a) represent the two-bit position code of the position of sensor 1. High bits of the displacement code are formed in the reversible counter 10 by accumulating pulses of one displacement, while the low bit of the reversing counter 10 is a natural continuation of the two-digit position code of the sensor 1.

Claims (1)

Invention Formula The displacement transducer to the code containing the displacement transducer whose outputs are connected to the inputs of the EXCLUSIVE OR element, the first inverter, the output and the input of the first inverter are connected to the first inputs of the first and second elements, respectively, the outputs of which are connected respectively to the inputs of the addition and subtraction of the reversible counter, the first element of the delay. The outputs of the bits of the reversible counter are the outputs of the higher bits of the converter, characterized in that, in order to simplify the converter, he introduced the second delay element, the second and third inverters, the first and second outputs of the motion sensor are connected to the inputs of the second, respectively and treg of his inverters, the output of the second iy. of the first and second inputs of the first delay element whose output is connected to the input of the first inverter, the first output of the motion sensor is connected to the second input of the second And element, the output of the third inverter is connected to the third inputs of the first and second And elements the input of the second delay element, the output of which is connected to the fourth inputs of the first and second element AND, the element ID EXCLUSIVE OR, and the first output of the displacement sensor are the outputs of the lower bits of the converter. FIG. 2