SU1275462A1 - Device for simulating man-machine systems - Google Patents

Abstract

The invention relates to the field of computing, in particular, to devices for simulating the human operator of human-machine systems. The purpose of the invention is to expand the functionality of the device by simulating the work of the operator for folding the service algorithm to eliminate channel overload with information. The purpose of the invention is achieved by introducing into the device a decoder, a switching field, an OR element, a waiting multivibrator, and K channels for modeling a type of service machine with corresponding functional relationships between them and the known 9 device blocks. 1 il.

Description

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The invention relates to computing, in particular, to devices for simulating the human operator of human-machine systems. The aim of the invention is to expand the functionality of the device by simulating the work of the operator in rolling out the service algorithm to eliminate channel overload with information. The drawing shows a block diagram of the proposed device. . The device contains a generator of a random stream of pulses, a counter 2 of the wok, a third element I 3, a second trigger 4, a generator 5 of a pulse sequence, a timer 6, the first trigger 7, a sixth element AND 8 a prohibition element 9, a generator 10 of a random number, a fourth element And P the second adder 12, the counter 13 of the identified applications, the reversible counter Chik 14, register 15, the second 16 and the first 17 comparison circuits, the first adder 18, the first 19 and the second 20 elements OR, the element NOT 21, the first element And 22, the second Element And 23, Fifth Element And 24, Counter 23 of the service time of the circuit 2 comparison codes, second 27 and first 28 decoders, counter 29 accepted applications, third decoder 30, switching field 3, K modeling channels each of which contain a group of m elements AND 32, a group of blocks 33 random time delays, channel element OR 34, a group of counters 35, a third element OR 36, and a pending multivibrator 37. Blocks 32-35 form the application type model 38 channel. The generator 1 of the input pulses simulates the input flow of the application. The pulse train generator 5 produces pulses distributed according to the normal law, which is necessary for delaying the queuing for the first phase of its service (recognizing it from the common flow). Random number generator 10 simulates the type of application. The random time delay blocks 33 delay for the time according to a certain algorithm with a predetermined survival probability for a particular application in the second processing phase. Counter 2 counts the total number of service invoices received for service. Counter 13 counts the number of quotes that were served in the first phase of processing. Counter 29 counts the number of incoming service bids separately for each type of service. Adder 12 calculates the time of the channel (operator) service per quotation. Timer 6 sets the total simulation time and is also the source of time stamps. Counters 35 counts the number of serviced items by type according to a given service probability. The decoder 30 analyzes the status of the queue (the state of the reversible counter 14). The device operates as follows. In the initial state, the counters 2, 14, 13, 25, 29, and 35, the adders 2 and 18, and the triggers 4 and 7 are in the zero state. Initially, the initial simulation time is set on the timer. On the switching field, the initial data is set to finalize the formalization of service algorithms for the quotation depending on the queue length. At the start signal, timer 6 starts counting the simulation time. The time stamps from the output of timer 6 are fed to the input of element I8, from the other output of timer 6 with a period of control T to the reading input of the adder. The Start signal translates trigger 7 into one state. The high potential from the direct output of the trigger 7 opens the element AND 22 for the pulses of the generator 1. The generator 1 of a random stream of pulses produces pulses with a random repetition period exponentially. Requests are recorded on counter 2, which counts the total number of input requisitions, and through prohibition element 9 arrives at the summing input of the reversible counter 4, imitating occupancy of places in the queue. The transition signal of the reversible counter 14 from the zero state to the first (number 1) passes through the element OR 19 and is fed to the first input of the element AND 3, to the second input

which filed the resolving potential with the inverse output of the trigger 4.

Passing through the And. 3 element, the pulse triggers the generator 10 of a random number and enters the installation input at zero of the counter 25, and also triggers the trigger 4 to the single state. The trigger 4 is in the single state during the application service time.

Now, the applications from generator 1 do not pass through the IZ element, since the prohibitive potential from the inverse output of trigger 4 is fed to its second input,

With the arrival of a pulse from an element AND 3, the generator 10 of a random number gives out a number, the value of which is randomly distributed in the interval from 1 to K (where K is the maximum number of types per wokj, to the input of the comparison circuit 26, and also to the information inputs of the decoder 28 As a result, the contents of the corresponding counter 35, which reads the number of applications by type of service, is increased by one.

Since now from the direct output of the trigger 4 to the element And 24 the resolving potential is applied, the sequence of pulses from the generator 5 begins to flow on. the input of the counter 25. Thus, on the other input of the comparison circuit 26, an increasing sequence of numbers from 1 to K begins to arrive.

At the moment of coincidence of numbers on

both inputs of the circuit 26 last generates a signal, which is fed to

the control input of the decoder 27, on the information input | the random number from the generator 10 of the random number is supplied, as a result of which the content of the corresponding counter 3 {counting the number of recognized applications by type is increased by one.

The same signal according to the circuit 26 is fed to the standby multivibrator 37, which produces a control pulse for the decoder 30, to the information inputs of which a number corresponding to the queue length is fed from the reversing counter 14. Through this pulse, the decoder 30 analyzes the state queues and

sends a queue pulse to the appropriate bus.

From the decoder 28 permitting potential flows to the first inputs of the elements And 32 - 32; (j l, K).

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From the decoder 30 through the switching field, the pulse arrives at. the second inputs of the elements And 32 - 32

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(, t). Through the element AND 32-pulse triggers the corresponding 1st block 33 of the random time delay. The pulse from the latter through the elements OR is fed to the inverse input of the trigger 4, translates it into the zero state, simulates the end of service applications, and takes the unit from the reversing counter 14 simulating a decrease in the initial queue and opening the And 3 element. from block 33, a random time delay arrives at the corresponding counter 35 of the simulation channel (counting the number of timely serviced requests with a given probability by type, increasing its state by one,

Subsequently, if there are orders in the queue (the non-zero state of the reversible counter 14j at the first input of the element 3 is the resolving potential, and the start of the random number generator 10 and the setting of the counter 25 to zero is performed by a transition signal from the zero state to a single trigger 4, passed through the element FROM.

While the application is in service, the permit potential from the direct output of trigger 4 is supplied to the input of element 8, therefore, the time stamps from timer 6 through the input of element 8 are fed to adders 12 and 18, counting the time of service .

The impulse control from the output of timer 6 reads the adder 18, the code of the total time Tp of the channel operation (operator) for servicing the wake for the period is rewritten into pepicTp 15, where it is stored until. next control pulse.

After zeroing, the adder calculates the total channel operation time for the new monitoring period.

The comparison circuit 17 compares the magnitude of the Tr and T-RdopTo codes, in the case of Tr T it produces a signal which, through the OR 20 element, closes

prohibition element 9 for the period until the next control pulse.

Controlling the total time T of servicing the quota for the period between two arrivals of the monitoring pulses and comparing it with the value T, maintains the operator's load at a level that does not exceed the allowable one by stopping the access of the quota to the channel.

During the operation of the device, the state of the reversible counter 14 (the status of the queue for service requests) is constantly monitored by the decoder 30. At the time of the coincidence of the codes in the code comparison circuit 26, it issues a signal to the waiting multivibrator 37, which performs the function of the pulse former, converts the potential, corresponding to the level of the logical unit, in a short pulse. This pulse arrives at the control input of the decoder 30, thus at a time, allowing the decryption of the signal of the reversible counter state 14.

In the case of changing the state of the reversible counter 14 to a level that exceeds the load threshold, the decoder 30, through the switching field 31, switches inputs within all simulation subchannels, thereby selecting the optimal solution algorithm for any of the possible types of applications.

In case of complete filling of the reversible counter 14, which means that all the places in the queue are occupied, the output potential appears at the output of the sixteen comparison 16, which is applied to the input of the element AND 23. The same potential through the element OR 20 closes the prohibition element 9. ,

The next application from generator 1 of a random stream of pulses passes through the element I 23, zeroes the counter 25, and once again starts the generator 10 of a random number. Thus, the maintenance of the application currently in service is discontinued, and the transition to the processing of the next request is made. The service with interrupted service on the meters 13 and 25 is not fixed, but fixed only on the counter 29.

At the end of the simulation time, the signal from the first output of timer 6 flips trigger 7 to zero

state, closing element I 22 and, thus, the flow of quotations into the channel.

A high potential from trigger 7 is fed to the input of element 11. After selecting all the quotations from the queue, the signal for switching the reversible counter 14 from one state to zero passes through the element 21, the element 11 and enters the second

Q input of timer 6, fixing the final simulation time. This time is equal to the sum of the time previously selected on the timer and the time for additional servicing for the five hundred and five queues in the queue, but not serviced during the set time.

At the end of the simulation, the total number of requests received is recorded on counter 2;

0 on the counter 29 - the number of incoming i-ro type service fees; on counter 13, the number of i-ro type served at the first stage of service; on the adder of the 12 - mtr operation of the channel (operator) for servicing the requisition, on the 35 counters - the number of serviced i-ro requisitions with a given probability of proper servicing.

Claims (1)

Invention Formula A device for simulating a man-machine system comprising a timer, a random stream generator named after it. pulses, meter of wok, counter of received quotations, service time counter and meter of identified identifiers, prohibition element, reversible counter, f. first second Third Fourth, the fifth and sixth elements And, the first and. the second element OR, the element NOT, the first and second comparison circuits, the register, the first and second adders,  the first and second triggers, the first and second decoders, the pulse sequence generator, the random number generator and the code comparison circuit, the timer input is the device start input and is connected to the single input of the first trigger, the zero input of which is connected to the first timer output, and my output is connected to the first input of the first element I, the second input of which is connected to the output of the random pulse generator, the output of the first element I is connected to the counting input of the queuing counter, the first input of the second element This AND and informational f input of the prohibition element, the output of which is connected to the summing input of the reversible counter, the bit outputs of which are connected according to the inputs of the first element OR, the output of which is connected to the first input of the third element AND and the input of the element NOT whose output is connected to the first input of the fourth element I, the second input of which is connected to the inverse output of the first trigger; the output of the fourth element I is connected to the stop input of the timer, the second | output of which is connected to the enable input, summation The first adder, the output of the third element I is connected to the single input of the second trigger, the resolution enable input of the service time counter and the start input of the random number generator; the direct output of the second trigger is connected to the first input of the fifth And element and the first input of the sixth And element, the second input of which connected to the third output of the timer, and the output is connected to the counting inputs of the first and second adders, the discharge outputs of the first adder are connected respectively to the bit inputs of the register, the bit outputs of which They are connected respectively to the first group of inputs of the first comparison circuit, the second group of inputs of which is the installation inputs of the device, the output of the first comparison circuit is connected to the first input of the second element OR, the discharge outputs of the reversible counter are connected respectively to the inputs of the second comparison circuit, the output which is connected to the second input of the second element AND and the second input of the second element OR whose output is connected to the control input of the prohibition element, the output of the second element AND is connected to the trigger input g A random number generator, the bit outputs of which are connected respectively to the inputs of the first and second decoders and the inputs of the first group of the code comparison circuit, the bit outputs of the second decoder are connected to the counter inputs of the received applications, the output of the pulse sequence generator I, the output of which is connected to the counting input of the service time counter. the bit outputs of which are connected respectively to the inputs of the second group of the code comparison circuit, the output of which is connected to the control input of the first decoder, the outputs of which are connected to the counting inputs of the counter recognized by the wok, the zero output of the second trigger And the subtractive input of the reverse counter, characterized in that, in order to expand the functional capabilities of the device by simulating the work of the operator in folding the service algorithm to eliminate the channel load information, it contains the third decoder, the switching field, the third element OR, the waiting multivibrator 5 K modeling channels of service type applications, each of which contains a group of hectares And elements, a group of m blocks of random time delay, channel element OR, group from m counters, the bit outputs of the reversible counter being connected respectively to the group of information inputs of the third decoder, the control input of which is connected to the output of the waiting multivibrator, whose input is connected with the output of the code comparison circuit, the third decoder group is connected, respectively, to a group of switching inputs (5n field), in each modeling channel of the service type, the outputs of the AND elements of the group are connected respectively to the trigger inputs of the random time delay block, the outputs of which are connected respectively to the counting the inputs of the group counters; in each channel of the simulation of the type of service of the application, the outputs of the blocks of the random time delay of the group are connected respectively to the inputs of the channel element OR, the outputs of the channel elements OR of all the modeling channels are connected respectively to the inputs of the third element OR, the output of which is connected to the zero input of the second trigger, the j-th output of the first decoder (K) is connected to the first inputs of the elements AND GROUPS of the 1st modeling channel, and The i -and switching output field, -, s,) is connected to the second inputs of the i-x elements AND simulation channel.