SU373746A1 - ^ UNION - Google Patents

Description

The invention relates to motion transducers into codes for digital computers, digital dosing machines, and digital indication of the position of relocatable mechanisms.

Displacement transducers are known to codes containing a driver and sensing elements, as well as an element defining the direction of movement of the input axis. The determination of the direction of movement of the input axis during the execution of the master element with the selection of intervals is made by the signals applied to the countable inputs of the flip-flops from two sensitive elements. The direct and inverse outputs of one of the flip-flops are connected through differentiating chains to the inputs of the coincidence circuits, the second inputs of which are connected to the direct output of the second flip-flop.

The disadvantage of this converter is the presence of triggers in it, which, firstly, reduces the reliability of operation, since the trigger is a potential-impulse memory element, secondly, it requires resetting triggers before starting off, otherwise there is no unambiguity the addition and subtraction outputs of the converter, and, thirdly, requires additional elements that provide for the flip-flop of triggers, as in the transition

sensitive elements from illuminated

dimming and dimming

to the lit state, otherwise

possible koi with kachaii x specifier

element at the boundary of the quantized area.

The purpose of the proposed isooorentia is

simplification of the scheme and increase of reliability

converter by eliminating

trigger elements.

The goal is achieved using a logic circuit, executed on the logic elements of the LOGIC T, which receives signals from two sensitive cells, the output of one of which is connected to the input

one and through an inverter with the input of another delay element, to a square pulse shaper; each of the delay elements is connected to its outputs from one of the two corresponding coincidence circuits. , on

the second inputs are connected to the output of the second sensing element.

Pa figs. 1 shows a functional diagram of the displacement transducer in the number-pulse code; pas figs. 2 is a diagram of the signals at the outputs of the elements with the corresponding symbols when the driver is moved to one and the other side.

The movement to pulse number converter consists of a driver

1, information about the movement of which is read by two sensitive elements 2 and 3. The axes of the latter are displaced one with respect to the other by p (n + 0.25), where p is the step of the quantized linear element; n, 2, 3

The output of the sensing element 3 is connected to the input of the inverter 4 and the element 5 of delay and the formation of nr-angle pulses. The output of the inverter is connected to the input of the element 6 of the delay and the formation of rectangular pulses. The outputs of elements 5 and b are connected to the inputs of the corresponding coincidence circuits 7, 8, the second INPUTS of which are connected to the input of the sensing element 2. The outputs of the coincidence circuits 7, 8 are connected respectively to the addition and subtraction inputs of a reversible pulse counter.

Consideration of the process of converting the displacement into a pulse number code (Fig. 2) can be started from any position of the setting element /. In accordance with the mutual arrangement of the sensitive elements 2, 3, the signals taken from them are shifted relative to each other by 0, 25 neyriod. The signal of the sensing element 3 is inverted by the inverter 4. The mutually inverse signals of the sensing element 3 and inverter 4 are fed to the inputs of the corresponding elements 5, 6, which form square impulses of a given duration, the moment of occurrence of which depends on the direction of movement of the setting element 1. (Elements 5 and 6 generate a pulse when the input signal changes from a certain level to zero).

With one direction of movement of the driver element 1, the signal of the sensitive element 2 coincides with the appearance of pulses at the input of the matching circuit 7 from the delay and shaping element 5, which leads to the appearance of pulses at the output of the matching circuit 7. With a different direction of movement of the driver 1, the sensitive signal element 2 coincides with the appearance of pulses at the input of the coincidence circuit 8 from the delay element 6 and the formation that

leads to the appearance of pulses at the output of the coincidence circuit 8.

Subject invention

The displacement transducer to the pulse number code, which contains the master element, the sensitive elements and the logic block for determining the direction of movement with

two matching schemes, characterized in that, in order to simplify the device and increase the reliability of its operation, an inverter and two elements are introduced into the logical unit for determining the direction of movement

delays and the formation of rectangular pulses, the input of one of which is directly, and the input of the other through the inventory is connected to the output of the first sensitive element; the output of each delay element

and forming rectangular pulses is connected to one of the inputs of the corresponding coincidence circuit, the second inputs are connected to the output of the second sensing element.

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