SU546894A1 - Device for tolerance control of parameters - Google Patents

Description

one

The invention relates to a coatrol measuring technique and can be used in systems for the automatic control and processing of measurement results expressed in digital form.

Devices for tolerance control of parameters are known, comprising a tolerance field boundary value input unit, a comparison unit, a measurement unit of monitored parameters, and an information processing unit. These devices are characterized by the inability to control intermediate parameter values and the complexity of the functional structure. Technically, the device closest to the invention is a device for tolerance control of parameters containing a control unit connected directly and through a serially connected measurement unit of monitored parameters and a decoder to the specifier FIELD tolerance unit, one of the outputs of the control unit connected to the zero input of the first trigger, single input which is connected to the output element OR. This known device has a low confidence control.

The proposed device is characterized in that a tolerance FIELD graduation unit, a impulse distributor, a second trigger, an AND element, a delay current and a block of key elements, whose inputs and outputs are connected to the outputs and inputs of the tolerance field and OR element, are entered into it. control unit through

series-connected gradation field tolerance shaping unit and pulse distributor connected to a single input of the second trigger, the zero input of which is connected to a control unit, single

the outputs of the first and second triggers are connected to the inputs of the element I and the delay unit, the outputs of which are connected to the inputs of the control unit, which makes it possible to increase the reliability of the control.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - the block of the task of the FIELD of the admission.

The device contains a control unit 1, a unit for measuring monitored parameters

2, control object 3, triggers 4 and 5, decoder 6, block for setting tolerance field 7, key element 8, element OR 9, block for forming gradations of tolerance field 10, pulse distributor 11, block for delay 12

and element 13. Block 7 contains, for example, three random switching fields 14, 15 and 16 for three-bit controlled parameters, expressed, say, in the decimal number system. Pa inputs 17-26

each of the fields 14-16 bitwise can

Receive digital information from the O-9 scales. Switching fields 14-16 are a system of vertical and horizontal lines with openings at the points of their intersection. The closure of the CIDI of the Ouya1, is identified by means of iodon-conductive contact pins, shown as an iris segment intersecting the vertical and horizontal muds.

The device implements a new method of forming numerical values of nyformatization plots, which consists in obtaining a number of numerical values of the tolerance field, at a predetermined discreteness, using the combinatorial method of allocating each element of the elder with the celestial element of the lower digits when using digital and program carriers and their logical processing. In this case, the formation of numerical values for the tolerance zero in order to avoid duplication or skipping of individual numerical values should be carried out taking into account continuity with a given discreteness and non-repeatability of numerical values.

With this in mind, a tolerance field containing N numeric values enclosed between boundary values Lmin. and Lmax .. and consisting of ns L bits, are divided into sections, the numerical values of which are typed into bitwise switching fields, the number of which is taken equal to the number of bits in max., the number of inputs of each of them is equal to the base of the selected number system, and the number of exits - the number of plots p.

Let the tolerance field of the first parameter be, for example, between 1 „and„ 522 and

BUT

 948 with co1max

fight natural r d containing

yV. I j

numeric values, i.e. 522, 523, ..., 947, 948, are divided into sections, taking into account the following, as follows: “i 522-529; "2 530-599; P 600-899; "4 900-939; "5 940-948 (see Fig. 2). Similarly, the tolerance field, prefilled them, the last parameter, the final between, for example, at „„ „. 323 and L. 417 with, representing a natural series containing numerical values, i.e. 323, 324 ... 417, is divided into sections as follows: / Zj 323--329; “J 330-399; p, 400-409; p 410-417 (see Fig. 2). In this case, we take the actual value of the first parameter equal to 703, and the last 511.

Then, when reading the outputs of the fields 14-16 of the first parameter, only from the third section, the signals of the key element 8 arrive at the inputs, and it is triggered as

is a sign that the parameter corresponds to a high tolerance field, while reading the outputs of fields 14-16 for the last parameter to the inputs of the key element 8

no signals come from any of the sites, and it does not work, which is a sign of inconsistency.

The method of forming information by sections allows you to control numeric

values of the tolerance field (with a given discreteness), excluding the comparison process. The qualitative assessment of the parameter information is determined by reading the outputs of the switching fields on the elements AND the key

element 8, the number of inputs is equal to the number of switching fields. The method can be implemented in a device with switching or non-commutation alternate or parallel reading of information.

plots.

The control unit 1 controls the flow of each of the monitored objects of the control object 3 to the block 2. Before each measurement from block 1, triggers 4 and 5 receive a reset pulse. The measured value of the parameter being monitored enters the decoder 6, and then the bit goes to the switching fields 14-16 of block 7. The output signal of the output signal of block 7 is carried out in the key element 8, the output of which is only possible according to its tolerance and is absent in case of nonconformity, by means of the element

The ILP 9 overturns the trigger 4. If the trigger overturns, a single signal arrives at the AND 13 element and, as a signal, “delay breakdown - into the delay block 12.

The number of sections for each monitored parameter is specified in block 10, which is connected to the distributor 11, which contains address counters. When filling the address counter, the distributor issues

the signal to the trigger 5, a single signal of which enters the element 13 and as a signal "start the delay - in the delay block 12, which outputs the signal to block 1 only if there is one signal at the input

“The launch of the delay and does not give it if there is a signal at its input“ delay delay.

In the initial state, the tolerance fields of each of the monitored parameters are dialed on the switching fields, the triggers are in the "zero position", the number of sections of each of the parameters is specified in block 10.

The first way the device works is to match a parameter to its tolerance field. When the actually measured parameter value coincides with the passage channels of one of its sections, all the signals arrive at the inputs of the element 8, and the output signal through the element 9 overturns the trigger

4, the HIGH potential of which goes to element 13 and, as a “delay breakdown,” to block 12. Upon completion of reading the outputs of the sections of each of the parameters, the distributor 11 reverses trigger 5 by the output signal, the output signal of which goes to element 13 and, as a start-up, in block 12. Element 13 gives a signal to block 1. The presence of a signal from block 12 in block 1 is a sign of compliance, i.e. the parameter is “Fit.

The second variant of the device operation is the inconsistency of the parameter with its own tolerance field. The device works in the same way, but in this case the trigger 4 remains in the initial state, and the block 12 and the element 13 do not receive its output signal. After reading the outputs of the sections, the high potential of the trigger 5 enters the block 12 and, as the "start delay", goes to the element 13. The block 1 receives the signal from the element 13, which is a sign that the parameter does not match its tolerance, i.e. the parameter - " Marriage.

The application of the proposed device allows one to control all the numerical values of the tolerance field with a given discreteness, excluding the operation of the alert.

Claims (1)

Invention Formula A device for tolerance control of parameters, containing a control unit connected directly and through series-connected measurement unit of monitored parameters and a decoder to the tolerance field setting unit, one of the outputs of the control unit is connected to the zero input of the first trigger, and its one input is connected to the output of the OR element, which differs By the fact that, in order to increase the reliability of control, a tolerance field shaping unit, a pulse distributor, a second trigger, an element NT And, the unit zaderlski i key element, the inputs and outputs of which are connected to the outputs and inputs of the block, specifying the tolerance floor and the element OR, respectively, control unit through serially connected tolerance field gradation shaping unit and pulse distributor connected to a single input of the second trigger, zero input of which is connected to the unit control, the single outputs of the first and second flip-flops are connected to the inputs of the element And and the delay unit, the outputs of which are connected to the inputs of the control unit. ; 7 t & 13 20 21 22 23 26 7 18 19 20 21 22 23 2 25 26 R :one P hg one : l I I I I I I I VSI // 7 18 13 20 21 22 23 2i- 25 26