CS247659B1 - Connection of input circuits for incremental evaluation of pulse signals - Google Patents

Abstract

Connection of input circuits for incremental evaluation of pulse signals, especially for position, angle and speed converters, number of rotations to speed and length parameters by pulse rotary sensors giving two or more series of amplitude-adjusted and mutually phase-shifted pulse signals connected to monostable flip-flops 11, 12, 21. 22 to n1 both directly and in parallelHfor negation to Inverters 1. £, to n, from the inverters are led together «3 outputs of monostable flip-flops to the inputs of product gates 101, 102. 111. 112, 1Qn, 1Qn-l. 11h, iin-TrSosr-jcCT·: πη; ττηΐΐΓτπ-; TTg*. Here, the logical product of their mutual input values is created. The outputs from gates 101, 102. lQa-1. 10n, 111. 112, 11n-1. 11n are connected in the output~Offj. This changes its value from logical one to logical zero impulsively in the case when the displacement or rotation is in the positive direction. The outputs from gates 201. 202. 2Qn-1. 20n. 211, 212, 21n-1. 21n. are connected in a common output 002 this changes from logical one to logical zero impulsively in the case when the displacement or rotation is in the opposite direction.

Description

BACKGROUND OF THE INVENTION The present invention relates to the connection of input circuits for incremental evaluation and half-signaling, in particular for transducers of position, angle and speed of rotation, number of rotations, velocity and length parameters.

When evaluating pulse signals in electrical and technological quantities, ee preferably uses incremental evaluation methods. Pulse signals have a frequency proportional to the rotation or feed rate, and the number of changes is proportional to position, angle of rotation, or length data. The signal sources are various types of incremental sensors. The most commonly used sensors are photoelectric, inductive or pneumatic, with touch or non-contact sensing. • For very accurate measurement of the angle or speed of rotation, number of rotations, speed and length parameters with the possibility of differentiating the sense of displacement or rotation. multiple rows of phase-shifted pulse signals ·

The evaluation of these electrical or technological variables ee is carried out in digital counter circuits, cells continuously »or per unit of time. · Where the meaning of the changes also needs to be taken into account in order to obtain correct numerical results even with possible bidirectional or oscillating motion, the basis of incremental evaluation of bidirectional counters, allowing counting or subtraction and circuits that determine the sense of displacement or rotation ·

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However, all known connections are characterized by complexity and some constraints · Because of the complexity, only the emyel of motion is evaluated for most devices · The evaluation circuits are not sensitive to AC motion changes and therefore there are errors in the evaluation and inaccuracy of the device operation ·

In cases where it is necessary to evaluate both the sense of motion and changes in the sense of motion, at least 3 rows of input signals must be evaluated for 1 data · This fact causes high complexity of circuits, use of a large number of circuits and increased energy consumption. a certain amount of position changes or rotations that can still be processed · Another limitation for all existing connections is the possibility to process only two or three rows of phase-shifted pulse signals simultaneously · They also do not allow frequency adjustment at the same time, eg · frequency input multiplication It occurs when the maximum permissible frequency values of the output pulse signals are lower than the real rotation or feed rate.

The drawbacks of the prior art eliminate the wiring of input circuits for incremental evaluation of pulse signals, especially for transducers of position, angle and rotation speed, number of rotations, velocity and length parameters with pulse rotary encoders giving two or more rows of amplitude adjusted and phase shifted pulse signals whose output is that the output from the first rotary pulse encoder is connected directly to the output of the first monostable flip-flop for evaluating the negative rotation direction and in parallel to the second input of the product gate for evaluating the positive changes of the positive direction of rotation and and in parallel through the input of the first inventory of the first rotary encoder. Its output is connected to the input of the first monostable flip-flop to evaluate the positive direction of rotation, in parallel to the second input of the last product

- 3,247,659 gates for evaluating downward changes in positive rotation direction parallel to the second input of the product gate for evaluating rising changes in negative rotation direction ·

The output of the second pulse rotary encoder is connected directly to the input of the second monostable flip-flop for evaluating the negative direction of rotation and parallel to the second output of the first product gate for evaluating the downward changes in positive direction of rotation. · The output is routed to the second inventory input for the second rotary encoder, the output of which is connected to the input of the second monostable flip-flop, and in parallel to the second input of the product gate for positive change direction evaluation and the second product gate for positive change evaluation. with positive direction of rotation and on the second input of the product gate to evaluate downward changes in negative direction of rotation ·

The output of the last pulse rotary encoder is connected directly to the input of the last monostable flip-flop for evaluating the negative rotation direction, in parallel to the second input of the last product gate and the second input of the last product gate for evaluating downward changes in negative rotation direction. last rotary encoder · Its output is connected to the input of the last monostable flip-flop circuit for evaluating the positive direction of rotation, parallel to the second input of the last product gate for evaluating positive changes in positive rotation direction and to the second input of the last product gate for evaluating downward changes in negative rotation · The output of the first monostable flip-flop for evaluating the positive direction of rotation is connected to the first input of the first product gate and parallel · First output of the first mono-stable flip-flop for evaluating the negative direction of rotation is connected to the first input of the first product-gate

- 4 247 659 for evaluating the downlink known in the positive direction of rotation and parallel to the first input of the product gate for evaluating downward changes in the negative direction of rotation · The output of the second monostable flip-flop is connected to the first input · The output of the second mono-stable flip-flop is connected to the first input of the second product gate for evaluating the downward changes in the positive direction of rotation and in parallel with the first input of the second product gate for evaluating the downward changes. in the negative rotation direction, the output of the last mono-stable flip-flop is coupled to the first input of the last product gate for evaluating rising changes at a positive · The output of the last mono-stable flip-flop is connected to the first input of the last product gate for evaluating the downward changes in the positive direction of rotation and parallel to the first input of the last product gate for evaluation · The output of the product gates for the evaluation of the rising and falling changes in the positive direction of rotation are connected in parallel to one positive output of the positive direction of rotation · Similar output of the product gates for evaluating the rising and falling changes in the negative direction of rotation are connected in parallel one negative output power output ·

The connection of the input circuits for incremental evaluation of the pulse signals according to the present invention has several advantages over the prior art solutions.

The input circuits eliminate the general drawback of the prior art, i.e., the complexity and insensitivity of bidirectional and oscillating feed or rotation. Presented wiring using simple

- 5 247 659 circuits ensure evaluation in both bi-directional and oscillating motion simultaneously with high resolution sensitivity · Resolution sensitivity is given only by the properties and parameters of mechanical parts of converters ·

The advantage of this wiring ae is especially evident when evaluating the signals of sensors emitted in more than two rows shifted to each other · In addition, it enables to output signals with the same double or quadruple frequency ·

Because modern integrated components are used for wiring, simplicity and high reliability are ensured · Subsequent evaluation of electrical or technological parameters can be performed digitally using two-way digital counters or in an analogous way.

The following description and example of a particular circuit schematically illustrated in the accompanying drawing serve to illustrate the invention in more detail, but do not limit the scope of the invention.

The output 01 from the first rotary pulse encoder is connected directly to the inlet 42 of the first monostable flip-flop 12 for evaluating the negative direction of rotation, and in parallel to the second input 68 of the product gate 12B for evaluating the positive variations of the positive direction of rotation to the second input 92 of the last product gate 21n for evaluating the incoming changes in the negative direction of rotation and in parallel through the inlet 31 of the first inventory of the first rotary encoder, its output 34 is connected to the inlet 41 of the first monostable flip-flop 11 second gate 76 of the last product gate 11n for evaluating the downward changes at positive rotation direction and in parallel to the crushing input 84 of the serial gate 20 n for evaluating the rise changes at negative direction of rotation; output 02 of the second pulse rotary encoder is connected directly to input 44

6 247 659 of the second monostable flip-flop 22 for evaluating the negative direction of rotation and parallel to the second input 70 of the first product gate 1.11 for evaluating downward changes in the positive direction of rotation parallel to the second input 78 of the product gate 201 to evaluate output 02 is connected to input 32 of second inventory 64 for second rotary encoder 7, output 35 of which is connected to input 43 of second monostable flip-flop 21 and in parallel to second input 62 of first product gate 101 for evaluating positive changes in positive direction of rotation and second input 86 of the product gate 211 for evaluating the downward changes in the negative direction of rotation; until the output On of the last pulse rotary encoder is connected directly to the input 46 of the last monostable flip-flop n2 for evaluating the negative direction of rotation in parallel to the second input 74 of the last product gate 11 (n-1) and to the second input 82 of the last product gate 20 (n- 1) for evaluating the downward variations in the negative direction of rotation, on the one hand to the input 33 of the last inverter g for the last rotary encoder its output 36 is connected to the input 45 of the last monostable flip-flop (n-1) for evaluating non-positive changes in positive rotation direction and at second input 90 of the last gate 21 (n-1) for evaluating downward changes in negative rotation direction, output 47 of the first monostable flip-flop 11 for evaluating positive rotation direction connected to the first: input 61 of the first product gate 101 and parallel to the first input 77 of the first product gate 201 for evaluating the incoming changes in the negative direction of rotation; the downlink change evaluation gate 111 in the positive rotation direction and parallel to the first input 85 of the down gate change evaluation negative 211 gate, the output 49 of the second monostable flip-flop 21 is connected to the first input 63 of the second

7 247 659 of the product gate 102 for evaluating the positive changes in the positive direction of rotation, parallel to the first input 79 of the second product gate 202 for evaluating the positive changes in the negative direction of rotation. 112 for evaluating the downward changes in the positive direction of rotation and in parallel with the first input 87 of the second gate gate 212 to evaluate the downward changes in the negative direction of rotation, output 51 of the last monostable flip-flop n is connected Positive direction of rotation and parallel to the first input 83 of the product gate 20n for evaluating the incoming changes in the negative direction of rotation, output 52 of the last monostable flip-flop n2 is connected to the first input 75 last outputs 301. 302. 303. 304. 305. 306. 307. 308 product gateways parallel to the first input 91 of the last product gate 21n for evaluating the incoming changes in the negative direction of rotation. 101. 102. 10fn-1). IQn. 111. 112.11 (n-1). Hn, for evaluating the up and down changes in the positive direction of rotation, are connected in parallel to one positive output direction 001 of the positive direction of rotation; outputs 309. 310. 311. 312. 313. 314. 315 and 316 product gates 201. 202. 20 (n-1), 2On. 211. 212.21 n-1

21n for evaluation of rising and falling changes in negative rotation direction are connected in parallel to one powered output 002 of negative rotation direction ·

The interconnection of monostable flip-flop inventories and the product gates ensures evaluation of the pulse signals from the rotary encoders to the pulse output signals for the positive or negative rotation direction. Functional operation of the circuit uses mutual phase shift of the output signals * of the rotary encoders. In the case of a positive direction of rotation, this is the mutual positive displacement of adjacent signals from the rotary encoders. E.g. when the output signal 01 changes positively when the direction of rotation is positive

8 247 659 produces a pulse 11 at the output 47 of the first monostable flip-flop 11 which, after being applied to the first input 61 of the product gate 101 and in the presence of a logic * 1 signal at the second input 62 is transmitted to output 301 of the first product gate 101; The pulse change at output 001 is further evaluated as a positive rotation direction value. The pulse from output 47 of the first monostable flip-flop 11 is also parallel to the first input 77 of the first gate 201 for evaluating the negative rotation direction. 78 of this product gate 201 is a logic value of 0, the pulse signal is not transmitted to output 002 · Similar functional conditions arise in the case of incremental changes of output signals 02 to On from rotary encoders · Negative offset of adjacent signals from rotary encoders · This causes, after evaluation in monostable flip-flop inventories and product gates, an impulse output signal at the output 002 of the negative rotation direction. No pulse signal on output 001

In the case of oscillatory motion at a position or point of rotation, when an input signal is changed, an impulse is always generated at the moment of this change at the corresponding output 001 or 002. It alternates ·

Output signals from powered outputs 001 and 002 can be connected to evaluation circuits created by bidirectional counter in integrated design · Signal 001 is connected to input for adding, signal 002 is connected to input for reading · Content of this counter represents actual value of electrical or technological value ·

Claims (1)

OBJECT OF Ϊ ME 1Ϊ ZU 247 659 Connection of input circuits for incremental evaluation of pulse signals especially for converters of position, angle and speed of rotation, number of rotations, velocity and length parameters with pulse rotary encoders giving two or more rows of amplitude-adjusted and phase-shifted pulse signals ) from the first rotary pulse encoder is connected directly to the inlet (42) of the first monostable flip-flop (12) for evaluating the negative direction of rotation and in parallel to the second inlet (68) of the product gate (10n) to evaluate input (92) of the last product gate (21n) for evaluating the incoming changes in the negative direction of rotation and in parallel through the input (31) of the first inventory (1) of the first rotary encoder, its output (34) connected to the input (41) of the first monostable of the positive direction of rotation parallel to the second input (76) of the last product gate (11n) for evaluating the downward changes in the positive direction of rotation and parallel to the second input gate (84n) of the product gate (20n) to evaluate the rotation; the output (02) of the second pulse rotary encoder is connected directly to the input (44) of the second monostable flip-flop (22) for evaluating the negative rotation direction and in parallel to the second input (70) of the first product gate (111) rotating in parallel to the second input (78) of the product gate (201) for evaluating the incoming changes in the negative rotation direction, further the output (02) is routed to the input (32) of the second inventory (2) for the second rotary encoder. connected to the inlet (43) of the second monostable flip-flop (21) and in parallel to the second inlet (62) of the first product gate (101) for evaluating positive changes in positive rotation direction and to the second inlet (86) of the product gate (211) changes in the negative direction of rotation; when the output (On) of the last pulse rotary encoder is connected directly to vetup (46) 10 247 659 of the last monostable flip-flop (n2) for evaluating the negative rotation direction parallel to the second input (74) of the last product gate (11 (n-1)) and to the second input (82) of the last product gate (20 (n-1) ) for evaluating the downward changes in the negative rotation direction, on the input (33) of the last inverter (n) for the last rotary encoder, its output (36) is connected to the input (45) of the last monostable flip-flop (n1) , in parallel to the second input (66) of the last product gate (10 (n-1)) for evaluating the incoming changes in the positive direction of rotation and to the second input (90) of the last product gate (21 (n-1)) of changes in the negative rotation direction, the output (47) of the first monostable flip-flop (11) for evaluating the positive rotation direction is connected to the first input (61) of the first product and in parallel with the first input (77) of the first product gate (201) for evaluating the incoming changes in the negative direction of rotation, the output (48) of the first and lasting flip-flop (12) for evaluating the negative direction of rotation is connected to the first an input (69) of the first product gate (111) for evaluating downward changes in the positive direction of rotation and in parallel with the first input (85) of the product gate (211) for evaluating downward changes in the negative direction of rotation; is connected to the first input (63) of the second product gate (102) for evaluating the rising changes in the positive rotation direction, parallel to the first input (79) of the second product gate (202) for evaluating the rising changes in the negative rotation direction, the output (50) the second monostable flip-flop (22) is connected to the first input (71) of the second component In the case of a positive gate (112) to evaluate the downward changes in the positive direction of rotation and in parallel to the first input (87) of the second product gate (212) to evaluate the downward changes in the negative direction, the output 51 of the last monostable flip-flop (n) (67) the last product gate (10η) for evaluating the incoming changes in the positive direction of rotation and in parallel to the first input (83) 247 659 a product gate (20On) for evaluating rise changes in the negative direction of rotation, the output (52) of the last monostable flip-flop (n2) is coupled to the first input (75) of the last product gate (1In) to evaluate downward changes in the positive direction of rotation; parallel to the first input (91) of the last product gate (21n) for evaluating the incoming changes in the negative direction of rotation, the outputs (301, 302, 303, 304, 305, 306, 307, 308) of the product gate (101, 102, 10 (n) 111, 112, 112, 11 (η-1), lín), to evaluate the rising and falling changes in the positive direction of rotation, are connected in parallel to one positive output (OOI) of the positive direction of rotation, the outputs (309, 310, 311, 312, 313, 314, 315 and 316) product gates (201, 202, 20) n-1), 20n, 211, 212, 21) n-1), 21n) for evaluation of rising and falling changes in negative direction of rotation are connected in parallel to one powered output (002 ) negative rotation direction ·