SU1283660A1 - Device for determining direction of rotation - Google Patents

Abstract

The invention relates to instrumentation engineering and makes it possible to increase the reliability of the device. When rotating forward, sensor 1 is turned on, causing sequential switching on of the EXCLUSIVE OR 6 and OR NOT 7 elements. Delay element 3 includes the EXCLUSIVE RSHI element 5, which leads to the inclusion of the OR-NOT 8 element. With further rotation forward, sensor 2 turns on, causing successively turning on the elements of the URGENT IZHEU 5 and OR-NOT 8. The delay element 4 is turned on, which turns off the EXCLUSIVE IZH 6 element, which leads to the sequential switching off of the OR-NOT 7 element and the inclusion of the OR-NO element 8, due to the symmetry of the device schenii ago it operates similarly to that described above and outputs the IL-NO element 9, four pulses per cycle actuation sensors I and 2. 2 yl.

Description

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The invention relates to instrument engineering and can be used in automation devices for determining the direction of rotation and measuring the angular displacement.

The aim of the invention is to increase the reliability of the device.

Fig. 1 is a functional diagram of the device for determining the direction of the rotary; On fkg, 2 - time diagrams of the device.

The device contains two sensors 1.2, connected via two elements 3.4 delay to the first inputs of two elements EXCLUSIVE OR 5.6, the second inputs of which are connected respectively to the sensors 2.1, and the outputs to the inputs of the element ШШ-НЕ 7 and the first inputs OR-NOT 8.9 elements, the second inputs of which are connected to the output of the OR-NOT 7 element, the outputs of the OR-NOT 8.9 elements are the device outputs.

The device works as follows.

In the initial state, the outputs a, b of sensors 1.2 contain zero signals. Therefore, the delay elements 3.4, EXCLUSIVE OR 5.6 and OR-NOT 7 are turned off, and the elements OR-NOT 8.9 are switched on and at the outputs of all elements, except for the output of element 7, there are zero signals.

When rotating forward, sensor 1 is turned on first (Fig. 2a), causing sequential switching on the elements EXCLUSIVE OR 6 and OR-NOT 7 (Fig. 2f, g). Since both inputs of the element OR NOT 8 have zero signals

It turns off and at its output h appears a pulse (FIG. 2h), indicating forward motion and equal in duration to the delay time for switching on delay element 3, which includes the EXCLUSIVE OR element 5, which leads to switching on 8 (figs, 2c, e, h).

Upon further forward rotation, sensor 2 (4G, 2B) is turned on, causing sequential switching off of the elements EXCLUSIVE OR 5 and OR-HE 8. At the output h of the element OR-NO 8, a second pulse appears (fig 2h) equal in duration to the delay time on the inclusion of element 4 for

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a holder that turns off the EXCLUSIVE OR 6 element, which leads to the sequential shutdown of the OR-NOT .7 element and the inclusion of the OR-NOT 8 element (Fig. 2d, f, g, h).

Further forward rotation causes the sensor 1 to turn off (FIG. 2a), which leads again to the sequential switching on of the EXCLUSIVE OR 6 and OR-NOT 7 elements (FIG. 2f, g) and the appearance of the third pulse at the output h of the OR-HE 8 element by the duration of the delay time for switching off the delay element 3, which for the second time includes the EXCLUSIVE OR element 5, which leads to the inclusion of the OR-NOT 8 element (Fig. 2c, e, h) ,.

Upon further forward rotation, sensor 2 is turned off (Fig. 2b), again causing sequential switching off of the EXCLUSIVE OR 5 and OR-NOT 8 elements. At the output h of the ILYE 8 element 8, a fourth pulse appears (Fig 2h) equal in duration delays for switching off the delay element 4, which for the second time switches off the EXCLUSIVE OR element 6, which leads again to the sequential switching off of the element OR-NOT 7 and the activation of the element OR-NOT 8 (FIG. 2d, f, g, h). All elements of the device circuit have returned to their original state, and it is ready to repeat the sensor actuation cycle,

Due to the symmetry of the circuit of the device, it rotates backward in the same way as described above and produces four impulses per sensor 2,1 response at the output k of the element OR NOT 9 9 (see, FIG. 2).

Claims (1)

Invention Formula A device for determining the direction of rotation comprising two pulse sensors, a delay element, an EXCLUSIVE OR element, the first pulse sensor being connected directly to one of the inputs of the EXCLUSIVE OR element, and the second to another input through the first delay element, characterized in that increase reliability, it additionally introduces a second delay element, a second element EXCLUSIVE OR, and three elements KPI-NOT, the output of the first of which is connected to the first inputs of the second and third elements OR NOT, the second inputs of which are connected to the inputs of the first element OR-NOT and to the outputs of the second and first respectively elements EXCLUSIVE OR, while the second pulse sensor is connected to the first input, and the first pulse sensor through the second delay element - to the second input of the second element EXCLUSIVE OR, (uff2