SU1524069A1 - Device for monitoring and measuring tolerable spreads of parameters - Google Patents

Abstract

The invention relates to automation and computer technology and can be used to determine the spread of CEA parameters. The purpose of the invention is to increase the reliability of the control and increase the speed of the device. The device comprises a clock pulse generator 1, a control signal generation unit 2, a distributor 12 signals, a block 14 of the physical model of the control object, switching elements 13, a parameter control block 14, an indication block 16, two comparison circuits 4.11, a buffer memory block 5, counters 6-8, multiplexer 10 and demultiplexer 9. Thanks to the newly introduced unit, the reliability of determining the optimum values of the parameters of the elements of the tested device is improved, as well as the speed of the device compared to the previously known, which in its the turn leads to an increase in the parametric reliability of electronic equipment and a decrease in the time for its adjustment. 1 il.

Description

the year of the newly introduced blocks increases the reliability of determining the optimal ratings of the parameters of the elements of the tested device, as well as the speed of the device by

compared with the previously known, which in turn leads to an increase in the parametric reliability of electronic equipment and reduce the time for its adjustment. 1 il.

The invention relates to automation and computing and is intended to study bezinertsionnye electronic circuits.

The purpose of the invention is to increase the reliability of control and increase the speed of the device.

The drawing shows the block diagram of the device about

The device contains a clock pulse generator 1, a control signal generation unit 2, a counting unit 3, a first comparison circuit 4, a buffer memory block 5, a third 6, a second 7 and the first 8 counters, a demultiplexer 9, a multiplexer 10, a second circuit 11

comparison, signal distributor 12, switching elements 13, block 14 of the physical model of the control object, parameter control block 15, display unit 16.

The clock i generator synchronizes the operation of the entire device. The output signal of the clock generator 1 is a square wave, the duration of which must not be less than the duration of testing the tested device for operability.

The control signal shaping block 2 determines the sequence of operations for all units of the device and transfers the device from one mode to another.

The block 3 of the account (optimal types) consists of reversible counters, the number of which is determined by the number of variable parameters and one decoder Type Inputs Zero all counters and inputs Direct

the counts of all counters are connected according to

Respectively with the first and third inputs of the 3-meter block. The inputs of the decoder are connected to the fourth input of the block 3 accounts. The outputs of the decoder are connected to the inputs of the inverters, the outputs of which are connected to the recording inputs of the corresponding counters. The second inputs of the coincidence circuits are connected to the second

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block 3 input account. Thus, the write pulse passes only to the input of the counter corresponding to the variable parameter.

The first comparison circuit 4 serves to compare the results of the new and previous optimization cycles and is a standard device.

The memory unit 5 serves to memorize the results of the optimization cycle and compare these results with the results of the subsequent cycle. It consists of counters, whose recording inputs are combined and connected to the signal input of memory block 5. The information inputs of the counters are connected to the corresponding information inputs of the memory block 5, and the outputs of the counters - to the information outputs of the memory block 5. The number of these counters is determined by the number of variable parameters.

Counter 6 (parameters) is used to iterate through all the variable parameters and represents a regular counter, whose conversion factor should be equal to the number of variable parameters.

Counter 7 of the minimum nominal) serves to determine the smallest nominal, at which the input parameters of the device under test are still within the tolerances. It consists of a conventional reversible counter, the conversion factor of which should not be less than the maximum number of type ratings in any parameter:

Counter 8 (maximum nominal) is used to determine the largest nominal at which the output parameters of the test device are still within tolerances,

The technical implementation of counter 8 (the maximum of the type of the final) is similar to counter 7 (of the minimum tipominal),

The lemultiplexer 9 is used to connect the information on the code of the number of the optimal nominal to the information input of the counter of the variable parameter of the block 3 (the counters of the optimal tip types),

The multiplexer 10 is used to connect information about the code of the nominal number of the variable parameter of the corresponding counter of the block 3 of the counters (optimal tip) to counter 7 (minimum tip of the nominal) and counter 8 (maximum tip of the nominal) for the subsequent recording of this information into these counters.

The second comparison circuit 1I is identical to the first comparison circuit 4.

The distributor 12 provides the inclusion of the necessary elements 13 of the switching of the types of the variable parameters of the block 14 of the physical model.

Switching elements 13 serve for switching the nominal values in the physical model block 14 in accordance with the distributor 12 equalizing signals. Electromagnetic relays, reed relays, etc. can be used as switching elements 13.

The block 14 of the physical model of the control object consists of a dielectric board (or substrate) on which, in series with the contacts of the switching elements 13, are connected p. The names of the variable parameters of the device under study. The entire range of the parameter variation, which determines the boundaries of the operability area of the tested device, is divided into several intervals. The average value of each interval is taken as the value of the tipominal. The controlled parameter is fed to the output of block 14 of the physical model of the object of control.

Block 15 control parameters opra

sews block 14 of the physical model, the output of block 15 control parameters

lyses its output signals and determines whether the device under test is working or not operating in accordance with previously selected performance criteria,

The unit 16 for indication of the state of the counters of the optimal types of nominal is from a scoreboard with indicator lights of the bits of the counters.

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block 3 counters (optimal type of nominal) and allows you to visually record the definition of the optimal tip types.

The device works as follows.

The pulses from the generator output of the I clock pulses arrive at the first input of the control signal generating unit 2 and thus synchronize the operation of the entire device. Initially, the set of types of internal parameters of the device under test (physical model) is determined, at which the requirements of the specified restrictions on the output parameters are fulfilled. To do this, from the third output of the control signal generation unit 2, a pulse is fed to the first signal input of the block 3 of the counters (the optimal tip types) and to the first input of the counter 6 (parameters). This impulse goes to the input. Installation About all

counters of the block of 3 counters (optimal types) and counter 6 (parameters), the values of the type numbers in the binary code (each number on its own bus) from the information output of the block 3 meters arrive at the information input of the distributor 12, where they are decoded into the position code and affect the corresponding , switching elements 13. Using the latter in block 14 of the physical model, the tested device is implemented with the values of the type-nominal parameters, which are determined by the block 3 of the account.

From the second output of the control unit 15 for the parameters, a test signal arrives at the second input of the unit 14 of the physical model of the control object. The unit 15 for controlling parameters controls the output parameters of unit 14 of the physical model. If the values of the output parameters are within the specified tolerances, then from the first

The second input of the control signal generation unit 2 receives the logic level 1, otherwise the logic level O.

When the unit 2 generates control signals of the logic level O from the fifth output of this unit to the third input, it arrives at the second input. Direct account of all the counters of the unit

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3 accounts (optimal tip types) impulse. Parameter control unit 15 checks the fulfillment of the requirements for limiting output parameters with new values of the type nominal. The impulses to the third input of the counting unit 3 arrive until the set of types of internal parameters of the device under test is operable, i.e., in which the output parameters satisfy the required tolerances. In this case, the parameter control unit 15 outputs the second flow of the formation unit 2 control signals, the logic level is 1 and the last one stops supplying pulses to the third input of the block 3 of the counters of the optimal types,

At the next stage, the determination of the boundary values of the BHyTpeHfnix parameters, at which

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the device under test (physical simulator 25, counter 7, and for the other parameters, counters recorded in block 3 (optimal types). Decreasing the number of the type number in counter 7 continues until the next value type violates the tolerances on the output parameters, B In this case, the control signal generation unit 2 stops supplying pulses to the second input. The counting counter counts 7 and supplies a pulse from the ninth output to the third input. The counter counts 7 are counted. Thus, the number 7 code is recorded in the counter 7 imenshego of permissible nominal-type-als first parameter.

del) still workable. For this, tests are carried out for each parameter separately, provided that all other values of the parameters correspond to the values that are determined by block 3 of the account. The test starts with the first parameter. For this, from the seventh output of the control signal generation unit 2, a pulse is sent to the second input of the counter 6 (parameters) and a unit is recorded in it — the number of the parameter that undergoes variation. The binary codes of the numbers of all the types that participate in the implemented scheme are sent to the information inputs of the multiplexer 10. If there is a control signal that comes from the second output of counter 6 to the control input of the multiplexer 10, the output of the number of the standard number of the first parameter exists, which then goes to the first inputs of the counter 7 (minimum nominal) and counter 8 (maximum nominal),

The control signal generating unit 2 supplies a pulse from the twelfth output to the fourth inputs of the record of the counter 7 and the counter 8, in which the nominal number of the first parameter is thus recorded. Then the number of the minimum tipominal is determined, at which the physical

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Then, the nominal value of the maximum parameter value is determined, at which the output parameters still satisfy the specified tolerances. The control signal generating unit 2 from the eleventh output sends a pulse to the third input of the Direct Account of Counter 8, increasing by one the number of its nominal, the binary code of which from the output of Counter 8 goes to the third control input of the distributor 12, goes to the first control input of the distributor 12 the binary code of the variable parameter, and the second selection input has a signal from the second output of the control signal generating unit 2 about the connection of the counter 8 in the direct counting mode,

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The model of the tested device is still operational. To do this, from the eighth output of the control signal generation unit 2 to the second input. The countdown counter 7 receives a pulse, which reduces the unit of the nominal number recorded in it. The binary code of the nominal number from the input of the counter 7 is fed to the second control input of the distributor 12, the first control input of which receives the binary code of the variable parameter number from the second output of counter 6, and the first selection input of the distributor 12 receives a signal from the first output of the control signal generating unit 2 detection of connection to the counter 7.

From the output of the distributor 12, the position code of the numbers of the parameter-type indices is removed, and for the variable parameter it corresponds to the number of the standard-number recorded in

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Then, the nominal value of the maximum parameter value is determined, at which the output parameters still satisfy the specified tolerances. The control signal generating unit 2 from the eleventh output sends a pulse to the third input of the Direct Account of Counter 8, increasing by one the number of its nominal, the binary code of which from the output of Counter 8 goes to the third control input of the distributor 12, goes to the first control input of the distributor 12 the binary code of the variable parameter, and the second selection input has a signal from the second output of the control signal generating unit 2 about the connection of the counter 8 in the direct counting mode,

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The increase in the number of the nominal in the counter 8 continues until the next nominal of the code does not lead to the departure of any code parameters beyond the tolerance limits. The control signal generating unit 2 stops supplying pulses to the third input. Direct counting counter 8 and pulses from the tenth output to the second input. Countdown counting counter 8. Thus, code 8 of the highest nominal number is recorded in counter 8. A tipominal that is equidistant from the boundaries of the working area is considered optimal. To determine the number of this type unit, the control signal generation unit 2 from the ninth output sends a pulse to the third input. Direct counter of the counter 7, and the second comparison unit 11 checks if it matches

If the codes do not match, the control signal generating unit 2 sends a pulse to the second input from the tenth ego output. The counting counter 8 counts, and the second comparison unit 11 checks the codes again.

The increase in the number of the nominal recorded in counter 7 and the decrease in the number of the type recorded in counter 8 continues until their numbers match. In this case, the second comparison circuit 11 supplies from its output a logic level 1 to the fifth input of the control signal generating unit 2, which stops supplying pulses to the third input of the counter 7 and the second input of the counter 8. The binary code written in the counter 7 goes from its output to the second control input of the demultiplexer 9, the first control input of which receives the binary code of the variable parameter number from the output of the counter 6. From the output of the demultiplexer 9 the binary code of the optimal number and

Then the next optimization cycle is performed. In counter 6, all parameters are searched, and for each of them the optimal tip of the nominal is determined. At the end of the cycle, when all the parameters have been enumerated, a comparison is made between the types found and those obtained in the previous optimization cycle. If the numbers of the types on all parameters in the new and previous cycles are the same, then

ponominal variable parameter

A block comparison unit 4 arrives at the information inputs.

ka 3 counters, and at its fourth 2 forming control signals

The input of the code of the number varies; the third input is the logical level.

my parameter Block 2 of formation 1 and the device stops working. ,

control signals from the fourth you- If the numbers of the nominal even at least

course supplies — the second signal input r one parameter does not match, then

block 3 counters write pulse, a new optimization cycle is carried out. Recording the number of the optimal typing,

The minal stage ends the test. With the help of the display unit 16, the first parameter, a number of counters of optimal types

The control signal generating unit 2 supplies a pulse from the seventh output to the second input of counter 6 and writes the number of the next variable parameter into it. The number of the nominal of the second parameter is recorded in the counters 7 and 8. As a result of the further procedure, the number of the minimum allowable nominal is recorded in the counter 7, and in the counter 8 the maximum. permissible type The number of the optimal nominal number is recorded in the corresponding counter of block 3 of the account.

Next, counter 6 records the number of the next parameter and determines the number of the optimal type nominal of this parameter. The control signal generation unit 2 goes over all parameters in counter 6 and the optimal type number is determined for each parameter. As soon as all the parameters have been enumerated, a signal comes from the first output of the counter 6 to the fourth input of the control signal generating unit 2, which signals the end of the first research cycle. Next, the control signal generation unit 2 supplies a pulse from the sixth output to the signal input of the recording unit of the buffer memory, to the information outputs of which the codes of the numbers of the nominal units of the account unit 3 are received. So

Thus, these numbers of the optimal type identifiers are recorded in block 5 of the buffer memory.

Then the next optimization cycle is performed. In counter 6, all parameters are searched, and for each of them the optimal tip of the nominal is determined. At the end of the cycle, when all the parameters have been enumerated, a comparison is made between the types found and those obtained in the previous optimization cycle. If the numbers of the types on all parameters in the new and previous cycles are the same, then

ratings are recorded test results.

The use of the invention in national economy allows enterprises to reduce the reject rate at the output of products without additional current and capital expenditures and makes an economic effect.

Claims (1)

Invention Formula A device for monitoring and measuring the permissible variation of parameters, comprising a control signal generating unit, a first counter, a buffer memory block, a display unit, switching elements, a physical model of a control object, a parameter control unit, a pulse generator and a signal distributor, connected inputs to the output outputs of the control signal generation unit, and the outputs through the corresponding switching elements to the setup inputs of the physical model of the control object, output by the parameter control unit connected to the data input, the control signal output connected to the account control input of the optimal type ratings of the physical model of the control object, and the output of the test signal to the data input of the physical object model of the control object, the output of the clock generator parameters and to the synchronous input of the control signal generating unit, characterized in that, in order to increase the reliability of the control and increase the speed of the device, it introduced the counting unit, the first and second circuits: comparison, the second and third counters, the multiplexer and the demultiplexer, the outputs from the first five 0 five 0 five 0 five the sixth count control of the shaping unit is connected to the counting inputs of the counting unit and the third counter to the direct and reverse counting inputs of the first and second counters, the first write control output to the control input of the counting block, the second recording control output - to the recording control inputs of the first and second counters, the reset control output - to the installation inputs of the counter block and the third counter, the write control output - to the recording input of the main memory block, the first outputs and the second comparison circuit and the output of the higher bit of the third counter are connected to the stop inputs, control the minimum nominal numbers and switch the mode of the control signal generation unit, respectively, the output of the second counter is connected to the first input of the second comparison circuit, and the data input of the demultiplexer, the outputs of the block of meters connected to the data inputs, the output of the third counter is connected to the address input of the multiplexer, distribute to the second data input signals, to the address input of the demultiplexer and to the addressing inputs of the counting block, the outputs connected to the first group of inputs of the first comparison circuit, to the group of inputs of the signal distributor, with the data inputs of the display unit, the buffer memory block and the multiplexer whose output is connected to the data inputs of the first and second counters, the output of the first counter is connected to the second input of the second comparison circuit and to the third data input of the signal distributor, the outputs of the memory unit are connected to the second group of inputs of the first cx This is a comparison.