SU995107A1 - Displacement-to-code photoelectric converter - Google Patents

Description

The invention relates to systems for the automatic conversion of non-electrical, ternary quantities into a discrete electrical signal, and in particular to converters of displacements into code.

Known displacement converter into a code comprising a displacement sensor system of mixed spatially sensing elements countable pulse shaper block ₁₀ for- ming movement sign auto setting unit and a reversible counter zero [1].

The disadvantage of this _t5 converter is its complexity.

The closest technical solution to the proposed one is a photoelectric converter for moving to a code containing movable and stationary raster disks with an auxiliary track made in the form of alternating transparent and opaque sections, a counting pulse shaper, an I element, a delay line and a reversible counter (2] .

The disadvantage of this device is that the converter provides registration of movement in only one direction.

The purpose of the invention is the expansion of the functionality of the photoelectric converter by determining the direction of movement by providing registration of movement in the forward and reverse directions.

. This goal is achieved due to the fact that a switch, a delay element and a block for generating a sign of movement, the first and second inputs are introduced into the photoelectric converter of displacement into a code containing a displacement sensor, the first output of which is connected to the input of the pulse shaper, element And and counter> which is connected to the first and second outputs of the displacement sensor, and the output is connected to the first input of the counter and the control input of the switch, the first and second inputs of which are connected to the first and second outputs of the pulse shaper owls, and an output coupled to the first input of the AND gate, a second input coupled to a third output of the displacement sensor, and output via a delay element - to a second input of the counter, the third output pulse shaper is connected to the third input of the counter.

In FIG. 1 shows a structural diagram of the proposed Converter; in FIG. 2 are diagrams explaining the operation of the converter.

The photoelectric transducer to the code contains a displacement sensor 1, a pulse shaper 2, made in the form of a pulse shaper 3 on the leading edge, a pulse shaper 4 on the trailing edge, an OR element 5, a switch 6, a movement sign generation unit 7, an element And 8, an element 9 delays counter 10.

The converter operates as follows. 25

When the encoder shaft of the converter is rotated, at the outputs of the displacement sensor 1, two sequences of rectangular signals are formed (Fig. 2, a, b), formed from the signals of reading elements ₃₀ shifted relative to each other by 1/4 of the steps of the raster track divisions, which are received by the inputs of the block 7 forming a sign of movement. The rectangular signals of one of the sequences (Fig. 25) are fed to the inputs of the shapers 3 and 4, at the outputs of which pulses are generated (Fig. 2, c, τ), which are fed to the inputs of the OR element 5, the output of which is formed by counting pulses (fig. 2e), which arrive at the counting input of the counter 10. At the same time, the signals from the outputs of the shapers 3 and 4 [arrive at the switching inputs of switch 6.

Depending on the direction of rotation of the encoded shaft at the output of the block

3 $, a direction of rotation signal is generated, which is fed to the control input of the switch 6 and to the input of the counter 10. Thus, depending on the direction of rotation of the shaft, the switch passes a signal from the outputs of the shapers 3 and 4 (Fig. 2e), which are fed to one of the inputs of the And 8 element, to the other input of which 5 is the reference signal (Fig. 2, g) from the sensor 1, in the presence of which one counting pulse is emitted at the output of the And 8 element (Fig. 2, e), which is delayed by the element 9 delay, enters the input of the counter 10 and sets e on in the zero state.

Thus, the proposed Converter provides registration of the direction of movement at one and 15 of the same origin at direct and reverse movements of the controlled object.

Claims (1)

(54) PHOTO-ELECTRIC MOVING CONVERTER TO CODE The invention relates to systems for automatically converting non-electric values into a discrete electrical signal, namely, to displacement transducers into a code. A known displacement transducer into a code comprising an interchange sensor with a system of spatially mixed coupling elements, a counting pulse former, a displacement sign forming unit, an automatic zero setting unit and a reversible counter 13. The disadvantage of this converter is its complexity. The closest technical solution & The proposed approach is a photoelectric transducer for moving into a code containing movable and fixed raster disks with an auxiliary track, executed in the form of alternating transparent and opaque areas, a pulse shaper, an And element, a delay line and a reversible counter t2. A disadvantage of this device is that the transducer provides registration of movement only in one direction. The purpose of the invention is to enhance the functionality of a phtotoelectric converter by determining the direction of movement by providing registration of movement in the forward and reverse directions. This goal is achieved due to the fact that the photoelectric transducer translates into a code containing a displacement sensor, the first output of which is connected to the input of a pulse former, an element And a counter, a switch, a delay element and a displacement sign forming unit are introduced connected to the first and second outputs of the motion sensor, and the output to the first input of the counter and the control input of the switch, the first and second inputs of which are connected to the first and second outputs of the importer lsov, and an output coupled to the first input of the AND gate, a second input coupled to a third output of the displacement sensor, and the output element via delayed ki - a second counter input, a third output pulse shaper is connected to the third input of the counter. Fig, 1 shows the structure of the proposed converter; in fig. 2 - diagrams that show the operation of the converter. The photoelectric transducer to the code contains a motion sensor 1, a shaper 2 pulses made in the form of a shaper 3 pulses along the leading edge, a shaper 4 pulses along the 3aj: iHeMy front element ILC 5, switch 6, block 7 of forming the sign of the displacement, element I 8, element 9 delay counter 10. The converter works as follows. During rotation of the encoded shaft of the straightformer & formter at the outputs of the displacement sensor 1, two sequences of rectangular signals (Fig. A, b) are formed, formed from signals of reading elements shifted 1/4 times from each other by raster lines that go to the inputs block 7 of the formation of the sign of movement. The rectangular signals of one of the sequences (Fig. 25) are fed to the inputs of the formers 3 and 4, at the outputs of which pulses are formed (Figs. 2, B, d), which are fed to the inputs of the OR element 5, and the counting signals are processed. pulses (Fig. 2, e}) are sent to the counting input of the counter 10. Simultaneously: signals from the formers 3 and 4 (. get to the switching inputs of the commutator 6. Depending on the direction of rotation of the encoded shaft, the output of block 7 produces a direction signal vryscheni, which goes to the control input com mutator 6 and the input of the counter 10. Thus, depending on the direction of rotation of the shaft, the switch 6 passes the signal from the outputs of the formers 3 and 4 (Fig. 2, e), which are fed to one of the inputs of the element 8, to the other input the signal is received on the reference (Fig. 2, g) from sensor 1, in the presence of which at the output of element And 8 there is one counting pulse (Fig. 2, e), which is delayed by delay element 9, arrives at the input of counter Yu and sets it to zero state. Thus, the proposed transducer provides the registration of the direction of movement at the same reference point during the forward and reverse movements of the object being monitored. Claims. A photoelectric motion converter into a code containing a motion sensor, the first output of which is connected to the input of a pulse shaper, an AND element and a counter, characterized in that, in order to extend the functionality of the converter by determining the direction of movement, a switch, a delay element and a block are entered into it the formation of the sign of the movement, the first and second inputs of which are connected to the first and second outputs of the movement sensor, and the output to the first input of the counter and the control input switch a, the first and second inputs of which are connected to the first n second outputs of the pulse former, and the output connected to the first input of the element I, the second input of which is connected to the third output of the displacement sensor, and the output through the delay element to the second: counter input, the third output pulse generator connected to the third input of the counter. Sources of information taken into account during the examination 1. USSR author's certificate 661588, cl. q 08 C 9/00, 1976. 2, USSR Copyright Certificate No. 720458, cl. Q 08 C 9/06, 1977 (prototype). uz.l (rig 2