SU1688254A1 - 2-channel queuing system simulator - Google Patents

Abstract

The invention relates to specialized computer aids and is intended for modeling: the process of servicing a demand between channels. The purpose of the invention is to expand the functional possibilities by simulating the transmission of a CLAIM to another channel in case of a refusal to accept service to its channel. The device consists of two channels, including eight AND elements, two OR elements, two H elements - holders, two random impulse generators, three triggers and a pulse shaper each, as well as a random service impulse generator unit and a random training impulse generator unit. 1 il.

Description

The invention relates to specialized computer facilities and is intended to simulate the process of distributing and servicing applications between channels.

The purpose of the invention is to extend the functionality by simulating the transfer of an application to another quality in case of a refusal to receive service into its channel.

The drawing shows a block diagram of the device.

The device contains a random service pulse generator unit 1 and a random training pulse generator unit 2, service channel 3 with input 4 for receiving service control and information input 5. Each channel 3 also contains the first 6 and second 7 elements And the second element OR 8, the first generator 9 random pulses, the third element AND 10, the first delay element 11, the second delay element 12, the first trigger 13, the fifth 14, the sixth 15. the fourth 16 elements And the driver 17 pulses, the trigger 18 first ale ent OR 19, seventh 20, eighth 21 AND gates, the second flip-flop 22, a second generator of random pulses 23 and outputs 24 and 25 of dripping.

The verbal model of the device is the following.

Each channel only serves its own voice call if both channels are lost. In case of refusal to accept applications for service by one of the channels, the flow of applications with a random time of each request goes to another channel. After servicing the application, the result with a random time delay arrives at the output of the channel to which it first arrived at

Inca. Thus, the service of its applications, the channel accepts, serves the requests of the other channel, if it does not accept its requests, and then transmits the result of their processing back.

Applications received at the time of the channel being serviced or prepared are rejected and lost.

Consider the operation of the device when both channels can take applications, i.e. in the presence of single potentials at the inputs 4. In this case, the channels work in a similar way and independently one I from the other. Received the input to channel 5 input through the open element AND 6, the element OR 8 and the element 10 and overturns the triggers 13, 22 and through the element 14 sets the trigger 18 to a state in which the unit potential from the output to the input of the element 20 a single signal is removed from the single output of the trigger 22, and the AND element 10 is closed. The arrival of a pulse from the output of block 1 of the random service pulse generators to the input of the trigger 13 flips it and opens element I 16, and the pulse shaper 17 produces them

the pulse, which, having passed through the opened element I 20, goes to the output 24 of the channel, which indicates the end of service, but the device will be ready to receive the next channel into the same channel only after the pulse from the generator 2 random training pulses, passed through the element And 16 and the element OR 19, flips the trigger 22, which sets a single signal at the first input of the element And 10.

Consider the operation of the device, when the first channel for some reason does not accept applications, i.e. There is no unit potential at input 4. In this case, applications received in the first channel pass through the open element I 7 and through the time determined by the first generator 9 random pulses imitating the transfer of data to the second channel arrive at the input of the element OR 8 of the second channel.

The second channel, if it is free, through the element OR 8 accepts the service charge and works similarly to the first one, except that (trigger 18 is set to the opposite state, and AND 20 is closed, and And 21 is prepared

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to receive a pulse from the driver 17, which starts the generator 28 random pulses.

The pulse received from the first channel starts the generator 23, imitating the random duration of the information transfer, and after a random time determined by this generator, an output appears at the output of the first channel indicating that the results of the application service have been received.

At the simultaneous arrival of a quotation into a serviceable channel, if it is free, of its own and another channel, the application is randomly selected for service, determined by the installation of a trigger 18.

Claims (1)

Invention Formula A device for simulating a two-channel queuing system comprising a random service impulse generator unit and a random training impulse generator unit and two service channels of the bids, each of which consists of a pulse maker, four AND elements, two triggers and an OR element, in each service channel the first input of the first element And and the direct input of the second element And are combined and are the information input of the service channel of the application, the input of the control of the request for the service of which is the combined second input of the first element And the inverse input of the second element And, the inverse output of the first trigger connected to the input of the pulse shaper, the output of the third element And connected to zero inputs of the first and second triggers, the direct output f of the second trigger connected to the first input the third element is AND, and the direct output of the first trigger is connected to the first input of the fourth element AND, the output of which is connected to the first input of the first OR element, the output of which is connected to the single input of the second th flip-flop, the second inputs of first OR both channels of service applications are combined and installation are input devices, random pulse generator outputs the service unit are respectively connected to individual inputs of the first flip-flops of the first and second channels for the service wok, second inputs Fourth elements And which are connected respectively to the outputs of a random training impulse generator block, characterized in that, in order to expand the functionality of the device by simulating the transfer of the application to another channel in the event of a failure to receive service to its own channel, each service channel is additionally contains the second OR element, two random pulse generators, the third trigger, two delay elements, from the fifth to the eighth AND elements, and in each service channel of the order, the output is The first element AND is connected to the first input of the second OR element and the input of the first delay element, the output of which is connected to the first input of the fifth AND element, the second input of which and the first input of the sixth And element are connected to the output of the third And element, the second input of the sixth And element is connected with the output of the second delay element, the outputs of the fifth and sixth elements And are connected respectively to the single and zero inputs of the third trigger, the direct and inverse outputs of which are connected to the first inputs of the seventh and eighth, respectively elements And, vto0 0 five 0 Other inputs are connected to the output of the pulse former, the output of the second element OR is connected to the second input of the third element AND, the output of the second element AND is connected to the start input of the first random pulse generator, the output of the first random pulse generator of the first service channel is connected to the second input of the second element OR and the input of the second delay element of the second service channel of the quota, the output of the second random pulse generator of which is connected to the second input of the second OR element and the input W the delay element of the first service channel of the request, the output of the eighth element And which is connected to the input of the second random generator of the second service channel of the request, and the output of the eighth element And the second service channel of the second station is connected to the input of the second random generator of the first service channel of the second, in each service channel of the request, the outputs of the seventh element AND and the second random pulse generator are combined through the installation OR and are the output of the served request corresponding to Channel service unit for wok. /five / 0 l. ™ (Ј T 5 j J 75/4 yym - tf // U T1