SU1410037A1 - Device for inspecting logical units - Google Patents

Abstract

The invention relates to automation and computing and can be used in control and measuring equipment. The aim of the invention is to increase the information content of the control. The device contains a pulse generator 1, adders modulo two 17, Yu, registers 18, 9, counter 15, connector 11, interface block 19, indicator 20. And 2, 8 elements, K-ME 6j 7 elements, triggers 3, 4 , 5, 16. A group of adders modulo two 13, a group of D-flip-flops 14. The device provides the possibility of controlling a logical block at the same time for all conclusions, the number of which sometimes is over 100, while you can get a signature not only by the outputs, but also the inputs of the controlled unit. 1 il. iS

Description

; The invention relates to an automaton: computer: and computer technology and can be used in instrumentation,: The purpose of the invention is to improve the formability of the control, I The drawing shows the circuit diagram of the device.

 The device contains a block of synchronization: the unit, formed by the generator 1: Synchro and pulses, element 2, triggers 3, 4 and 5e of the element w-NOT 6 ,; | 7, element 8; test generator, built on shift register 9 and adder 10 modulo two-pin connector 11 controlled logic block 12, group of adders jno modzshyu two 13.1, about 13 oP (where 1 number of outputs of the monitored block) (DA-triggers lAot ,,,, 14 11 ,, 1 counter 15 control cycle length, trigger 16s signature analyzer containing modulo-17 adders two and shift register 18, indication block generated by conjugation block 19 and the display unit 20 The drawing also shows the device start input 21, the input 28 for the operating mode ( stroke | end control interval) ,, input 23 the initial installation of the device, the input device J24 initial conditions (za-} ayut code length control cycles; device operates as follows ob- jpasoM,

i In the initial state, register 18 is cleared, and register 9 is recorded with an in-law other than zero (these circuits are not shown). With the arrival of the signal 23 of the initial setup, trigger 5 and group trigger 13.1, 13op are reset, triggers 3 and 16 are set) to the log state, 1, and the number 15 records the value j in the counter 15 which is determined from p, where m is a part of a number. The trigger 3 permits the output of the signals from the generator 1 output to the synchronous register 9, a pseudo-case is formed at the outputs of the register 5. - These codes, which arrive at the inputs of the block 12 through the connector 11 ,, bring it to its original state. The signal to Input 21 is supplied after setting the block 1 2 to its initial state. This signal sets the triggers 4 and 5 to the state log, 1, thereby allowing the passage of signals from the output of the generator 1 to the synchronous input of the triggers

o s 0 5 About

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13.1.,

3, n groups. In each

five

five

The signals at the outputs of block 7 are summed modulo two with the previous state of triggers 13.1 ,, 13, n and are again recorded into triggers shifted by one bit, ,, When a signal arrives at input 22, triggers 3 and 4 is reset; thus, the signals from the generator 1 output to the register 9 clock synchronization are prohibited and the signal from the generator 1 output through element 7 to the register register W, counter 15 and the trigger group 13.1, SI is allowed, since the input of the AND 8 element receives the signal log „1 s output element AND-NOT 6. Counter, 15 runs n clock 5 ensuring that the information of groups of triggers (n is bit signature) is entered into register 18. After the n cycles at the output of overflow (borrowing) of counter 15, a signal appears that resets the trigger 16 and thus prohibits the passage of the signal from the output of the generator 1 to the element is NOT-7; The received information in register 18 (signature) is indicated on the indicator 20. The obtained signature is compared with the reference one.

The signals of the initial installation, the beginning and the end of the monitoring interval are synchronized with the signals of the generator 1,

In this device, it is possible to obtain not only the input signature of the monitored unit 12j but also to connect the output of the clock generator3 to the 13o1e “eJ 13.P outputs of the clock generator 3 via connector 11, thereby monitoring the correctness of the clock generator operation. In general, this device controls the blocks when PI-100.

It should be noted that, after the initial installation of the monitored unit, the synchronization of the clock generation circuit is not required, since the signal of the start of the monitoring interval synchronously sets the device to the monitoring mode without interrupting the clock, then the signal from the beginning of the monitoring interval, entering the device 21, through the elements it permits the passage of the signals of the generator 1 to the synchronous inputs of the trigger groups 13,1j. ".. 13, p, thereby starting to register the responses of the monitored block. Control completes with signal end.

control interval.

to the input 22 of the formula of the invention

A device for controlling logic blocks, containing a test generator, a group of modulo-two adders, a signature analyzer, a display unit, the outputs of the signature analyzer are connected to the information inputs of the display unit, which is different in order to increase the number of contacts; the second group of contacts is a group of device outputs for connecting to a group of inputs of a controlled logic block, a third group of contacts of a contact connector is a group of device inputs for connecting To the group of outputs of the controlled logic block, the fourth group of contacts of the contact connector is connected - with the first inputs of the corresponding modulo adders two groups, the outputs of which are connected

nor informativeness of control, device-chg D-inputs of the corresponding D-trigger

The device contains a synchronization block, a pin connector, a D-trigger group, a trigger and a cycle length counter. The control, the device start input is connected to the start input of the synchronization unit, the initial setup input of which is connected to the initial setup input of the device, with the reset input of the D-TpnrrepXJB group and with the input of the recording of the control cycle length counter, the information inputs of which are connected to the inputs of the initial conditions of the device, the input of the operation mode of which is connected to the input of the operation mode of the block synchronization, the first output of which is connected to the synchronization input of the test generator, the outputs of which are connected to the first

0

about

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ditch of the group whose outputs from the first through (p-1) -i (where and is the number of outputs of the controlled logical block) are connected to the second inputs of modulators two groups from the second to the nth, respectively, the output of the n-th group trigger is connected to the second input of the first adder modulo two groups and with the information input of the signature analyzer, the synchronization input of which is connected to the second output of the synchronization unit and with the subtractive input of the control cycle length counter, the loan output of which is connected to the reset input of the trigger, the output of which is Inen with the lock input of the synchronization block, the third output of which is connected to the inputs of the D-flip-flops of the group.

Claims (1)

Claim A device for monitoring logical blocks, containing a test generator, a group of adders modulo two, a signature analyzer, an indication unit, the outputs of the signature analyzer connected to the information inputs of an indication unit, characterized in that, in order to increase the information content of the control, the device 15 GUSTs comprises a synchronization pin, a group D-trigger, trigger, and the cycle length counter control, wherein the trigger input of the device connected to the trigger input of the ₃ 0 sync input initial installation with which dinan with the input of the initial installation of the device, with a single input of the trigger, with the reset input of the D-triggers of the group and with the input 25 of the record of the counter of the length of the control cycle, the information inputs of which are connected to the inputs of the initial conditions of the device, the input of the job operating mode of which is connected to the job input 39 the operation of the synchronization unit, the first output of which is connected to the synchronization input of the test generator, the outputs of which are connected to the first group of contacts of the connector, the second group of contacts is a group of outputs devices for connecting to the group of inputs of the monitored logic unit, the third group of contacts of the contact connector is the group of inputs of the device for connecting to the group of outputs of the monitored logic unit, the fourth group of contacts of the connector is connected to the first inputs of the respective adders modulo two groups whose outputs are connected to D - inputs of the corresponding D-triggers of the group, the outputs of which are from the first to (n-1) -th (where η is the number of outputs of the controlled logic block) are connected to the second inputs and adders modulo two groups from the second to the nth respectively, the output of the pth trigger of the group is connected to the second input of the first adder modulo two groups and to the information input of the signature analyzer, the synchronization input of which is connected to the second output of the synchronization unit and with a subtracting input a control cycle length counter, the loan output of which is connected to the trigger reset input, the output of which is connected to the lock input _t of the synchronization unit, the third output of which is connected to the inputs of the group D-flip-flops.