SU1594457A1 - Apparatus for inspecting the quality of contacts of logic units - Google Patents

Abstract

The invention relates to instrumentation technology and can be used to control the contacting of logic blocks with test control installations. The aim of the invention is to extend the functionality by additional control of logical blocks. The device contains test object 1, test setup 2, contact device 3, unit 4 modulo two elements, static register 5, element OR 6, indicator 7, generator 8, contact analysis button 9, counter 10, converters 11 and 12 voltage level, blocks 13 and 14 resistors. The converters 11 and 12 produce a normalized output voltage, which is switched depending on the control signals between the voltage levels set at the inputs of the device. 1 il.

Description

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The invention relates to a control technology and can be used to control the contacting of logic blocks with test control settings with

The purpose of the invention is the expansion of functionality due to the possibility of additional control of logical blocks.

The drawing shows a structural device.

 The device contains an object 1 for cleaning, installation 2 for test, contact device 3 (flames.W) for connection, a test object), block 4 of elements of addition pf module two static register 5 element OR 6, indicator 7, gene- 8, contact analysis button 9, counter 10, 11 and second 12 voltage converters, first 13 and second lit resistor blocks,

 Terminals 3 contain contact corpses according to the number of outputs of the object and Experimental, the location of which consists of, d | wuh contacts in contact with the object 1 of the test. The first contact is the input that receives the signal from set 2, the second contact is the output that serves to control the fact that the first contact is in contact with the test object 1,

Converters t1 and 12 level nap | p | marriages produce normalized voltage, switched to | dependences on control signals between voltage levels specified on the device inputs.

The counter 10 may be implemented using a 1K trigger, in which a logical 1 signal is sent to inputs I and K, and the inputs R and S are interconnected to form a counter lock input.

Block 4 of modulating elements two (M2) contains mr, two-input cells M2, static resistor 5.- and SR type triggers, indicator 7 - n + 1 single indicators, from which n indicators control the outputs of register triggers 5, and n + 1 the indicator is the output of the element OR 6,

In the initial position, the switch 9 outputs the logical O signal, which sets the register 5 to the initial (zero) state and the counter 10

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to block output status. At the same time, the signals of logical 1 from the outputs of the counter 10 set at the outputs of the converters 11 and 12 a high potential level that goes to the resistors of the blocks 13 and 14. At this position of the switch 9, the operation of the object 1 is tested using the set 2. If the test result is negative, press the button switch 9, the output of which is a signal of logical 1, unlocking the counter 10 and register 5,

The counter 10 starts to switch from the geyator 8 and time-varying and opposite signals appear on its outputs, which control the converters 11 and 12. As a result, opposite voltage levels (high and low) alternately are applied to the blocks of resistors 13 and 14. levels). For one full cycle of operation of the generator 3 in those channels where there are no contacts, block 4 generates a logical 1, which are fixed in register 5 and indicator 7, indicating channels containing defects in contact. In addition, the OR 6 element generates a common failure signal, which is also indicated on the indicator 7.

If there are no channels with defects, contacting indicator 7 does not turn on, which indicates the presence of an internal fault in the test object.

During normal contacting, the first and second contacts are interconnected through the body of the output of the control object, i.e. Both inputs of the element of the block 4 receive the same signals, which corresponds to the state of logical € at the output of the element M2 of the block 4 and indicates the absence of a defect,

The contact analysis is carried out in a static state when the signals at the outputs of installation 2 do not change, because it is stopped by the operator or stopped automatically after detecting a failure in the test object, which is that the test sets of logic signals received from installation 2 , object 1

responded incorrectly, resulting in a set of logical signals, denouncing the PT reference.

In the analysis of contacting barely. blows to learn that the signal is in failure. This channel can be transmitted either from installation 2 to object 1. (to the right), or in the opposite position, while it can either have a logic level 1.

Oh, or logical level

. The voltages supplied by the transducers of levels 11 and 12 can, through the resistors of blocks 13 and 14, change the signal at the input of element M2 of block 4 if, due to a defect in contact, it is separated from the signal source. The fact is that the source of the logical signal, which can be the output of installation 2 or the output of object 1, has a relatively small internal resistance and prevents potential from being driven through the resistors of the block 13 and 14, and when disconnected from a similar source, the internal resistance of the circuit formed only -inputs of logic elements are so increased that the induction of potentials generated by converters

11 and .12 level is provided.

If any of the contact failures and. any state of logical signals, there is always a state of outputs of converters 11 and 12 of the level at which the inputs of element M2 of block 4 receive various logical signals (1 or O), which sets the output of element M2 of block 4 to the state of logical 1 and Causes a contact defect.

invention formula d5

A device for controlling the contacting of logic blocks, comprising

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generator, counter, contact analysis pushbutton switch, static register, OR element, terminals for connecting the test object, an indicator whose inputs are connected to the outputs of a static register, and the generator output is connected to a counter input of the counter, characterized in that , in it - the first and second blocks of resistors are introduced, the block of the elements of addition by me. two, first and second voltage level converters, and the counter is made with output locking, the installation input of which is connected to the output of the contact analysis push-button switch and to the installation input of a static register, the outputs of which are connected to the first inputs of the OR element, the output of which is connected to the second input indicator, the first output of the counter with blocking is connected to the first input of the first converter. Voltage level, and the second output of the meter with blocking is connected to the first input of the second level converter, the second input of which is connected to the second input of the first level converter and to the device level input, the second input of the device is connected to the common bus of the device and the third inputs of the first and The second level converters, whose inputs are connected to the first inputs of the first and second blocks of resistors, respectively, the second inputs of the first block of resistors are connected to the outputs of the test control installation and input terminals for connecting the test object and the first inputs of the add-on unit modulo two, the second inputs of which are connected to the outputs of the terminals Lp of connecting the test object and the second inputs of the resistor, and the outputs to the information inputs. static register.

Claims (1)

Claim Device for controlling the contacting of logical blocks, containing generator, counter, pushbutton analysis of contact analysis, static register, OR element, terminals for connecting the test object, an indicator whose inputs are connected to the outputs of a static register, and the generator output is connected to the counter input of the counter, indicating that extensions of functionality, the first and second blocks of resistors are introduced into it, the block of elements of addition is added by me. I split two, the first and second voltage level converters, and the counter is made with output locking, the installation input of which is connected to the output of the contact analysis push-button switch and to the input of the static register setting, the outputs! which are connected! with the first inputs of the OR element, the output of which is connected to the second input of the indicator, the first output of the counter with blocking is connected to the first input of the first transducer. For the voltage level, the second output of the meter with blocking is connected to the first input of the second level converter, the second input of which is connected to the second input of the first level converter and to the level input of the device, the second input of the device is connected to the common bus of the device and the third inputs of the first and second level converters whose outputs are connected! with the first inputs of the first and second blocks of resistors, respectively, the second inputs of the first block of resistors are connected! with the outputs of the test control installation and the inputs of the terminals for connecting the test object and the first inputs of the block of addition elements modulo two, the second inputs of which are connected! with the outputs of the terminals _connection of the control object and the second inputs of the resistor block, and the outputs - with the information inputs of the static register.