SU1035611A1 - Device for simulating process of servicing requests having different priorities - Google Patents

Abstract

A DEVICE FOR MODELING A SERVICE SERVICE PROCESS WITH DIFFERENT PRIORITIES, containing. Two pulse generators with a random following interval, two triggers, the first converting diode, e: elements, and the input for the high priority of the device is connected to the first input of the first element and whose output connected to the trigger input of the first pulse generator with a random following interval and to the first input of the first trigger, the first output of which is connected to the second input of the first element And, the output of the first The pulse generator with a random spacing interval is the first output of the device and is connected to the second input of the first trigger, the second output of which is connected to the control input of the BAN element, whose information input is connected to the output of the second element, and the output of the BAN element is connected to the first input of the second trigger and through the first decoupling diode — with the output of the third element I and with the trigger input of the second pulse generator with a random following interval, the output of which is the second output device house and connected to the second input of the second trigger, the first output of which is connected to one of the inputs of the second element AND, the other input of which is the input of the low priority device, the second output of the second trigger connected to the first input of the third element AND, the second input of which is connected with the output of the first pulse generator with a case of g (/) a following interval, characterized in that, in order to extend the functionality by simulating a service device failure, it is entered into it a gate generator with a random duty cycle, a NOT element, a differentiating element and three isolating diodes, the first gate generator output with a random duty cycle is connected to the input of the differentiating element CO and through the element is NOT connected to the stopping input of the first generator of pulses with a random interval, the output is differentiated element through the second isolating diode is connected to the second input of the first trigger and through the third isolating diode is connected to the second input of the second trigger, the second output A generator of gates with a random duty cycle is connected to the prohibiting input of the second pulse generator with a random following interval and through the fourth decoupling diode.

Description

1: .p; l - zzyny In the opposite direction; - Zaguska11: it is followed by the input of the first generation of pulses with a random interval.

f; o6i: eTei-i / e refers to spetsmaliziroyoayinin means of computing technology and prediction to simulate the maintenance process; kiaa; - and two streams; o8 with different priorities by one serving device and can

be used in US-ROISTB.ZH; MOMejiHpyiOiUHX system of mass service vani,

Of course, the device for organizing the priority O5s; (already with ciplane. Containing three queue registration devices. The output of which is connected to the inputs of the corresponding e-1emento8 And, direct output of the first element And is connected to the input of the first model of the servicing device, and the inverse output of the main switch to first inlet 03 -; 1-; the first and the fifth elements I. D; GY)): the output of the current element And is connected to the BTopbiM input of the four-member element And, and the inverse output from the input element of the third element And the third exit Elemets And plug; to the third input of the first element and the fourth and fifth electric outputs are connected to the second and third models of the servicing device of the corresponding outputs of all service models of the educational equipment - their control, - the input and the control input of the corresponding queuing devices whose outputs and entrances were exits

and the inputs of the device With 1

A disadvantage of this device is the implementation complexity.

The closest to the technical essence and the achieved positive effect is a device for simulating the process of maintenance with two pulse generators with a random interval following, which is a model of the service of the instrument, two triggers, a prohibition element, three elements And and a diode,

the input the high priority input is the first input of the first element AND whose output is connected

(. The triggering input of the first pulse generator with a random interval not following J,; to the first trigger of the first trigger and the output, ayush, and to the input of the second generator of the impulses is occasionally implied. n i, x, y, d lzogo generator;;; - 1G, its random interval followed by the first OUTPUT of the device; the connection of the third element AND and the sropbiM input of the riepjoro trigger, the first output of which is connected to the second output of the first element E, its second output is connected to the control input of the element, information The on-line input of which is connected to the output of His element I, and the output no./yc-ioi-ie: to the driver of the secondary rpiirrcoi mete diode to the aygod of the heating element and the source of the second one; - 3 of pulses from the second think of Mr. 11th Interval - following, the output of which, with the second movement of the device, connection: о -:.: - and to the second input of the third trigger, the first output of which is connected to the third element I; s the second output is connected to the second input of the second element And peov1 :: 1 whose input is the device input for a low priority application

The disadvantage of this device is the nonexperience of simulations of a troop-service service with failures of a service device.

The purpose of the invention is to expand the functionality of the device by simulating the performance of its instrument.

The goal is achieved by the fact that in a device for simulating a process of servicing applications with different priorities, there are two pulse generators with a random interval following S and two triggers, the first time, And the elements of the high priority device are connected to the first input tepBoro element And, the output is

3 1

connected to the trigger input of the first pulse generator with a random following interval and to the first input of the first trigger, the first output of which is connected to the second input of the first And element, the output of the first pulse generator with a random following interval is the first output of the device and connected to the second input of the first trigger, the second output of which is connected to the control input of the BANCH element whose information input is connected to the output of the second element I, the output of the BAN element is connected to the first, left input m of the second trigger and through the first decoupling diode — with the output of the third element I and with the triggering input of the second pulse generator with a random following interval, the output of which is the second output of the device and connected to the second input of the second trigger, the first output of which is connected to one of the inputs of the second element And, the other input of which is an input of the low priority device of the device, the second output of the second trigger is connected to the first input of the third element And, the second input of which is connected to the output of the first a pulse generator with a random interval, a strobe generator with a random duty cycle, a NOT element, a neutralizing element and three decoupling diodes, the first output of a strobe generator with a random duty cycle are connected to the input of the differentiating element and NOT connected to the inhibitory input of the first pulse generator with a random interval of the next, the output of the differentiating element through the second isolating diode is connected to the second input of the first trigger and through the third isolating The iodine is connected to the second input of the second trigger, the second output of the gate generator with a random duty cycle is connected to prohibiting the input of the second pulse generator with a random following interval and through the fourth decoupling diode connected in the opposite direction - with the starting input of the first pulse generator with a random interval follow up.

The drawing shows a block diagram of the device.

35611

The scheme contains input 1 for high priority wok, input 2 for low priority wok, first and second elements 3 and i, first and second trigger

5 heres 5 and 6, the element BANCH 7, the decoupling diode 8, the third element AND 9 the first and second generators 10, 11 pulses with a random interval, a generator 12 of strobes with

10 random duty cycle, fourth decoupling diode 13, NOT T element, differentiating element 15, second and third isolating diodes 16 and 17. Device input 1 is connected to the first input of the And 3 element, the output of which is connected to the first trigger input 5 | the input of the generator 10 and through the diode 13 to the inhibiting input of the generator 11 and the second output of the generator 12; The first output of the generator 12 is connected to the input of the HE element k, the output of which is connected to the inhibitory input of the generator 10, the output of which is the first output of the device and the input of the differentiating element 15, the output of which is connected through a diode 17 to the output of the generator 11, which is the second output of the device to the second trigger input

30 6 and through diode 16 to the second input of the trigger 5 and the output of the generator 10, which is the first output of the device. The second output of the trigger 5 is connected to the second input of the element 35 and the first output of the trigger 5 is connected to the control input of the element BANCH 7, the information input of which is connected to the output of the element t, and the output connected to the first input of the trigger 4 r 6, and through diode 8 - d the starting input of the generator 11 and the output of the element And 9 the first input of which is connected to the first output of the trigger 6, the second output of which is connected to the 45th second input of the element And k., the first

the input of which is input 2 of the device.

Service flows at inputs 1 and 2 are distributed according to certain (same or different) laws.

The model of the servicing device are the generators 10 and 11. The law of distribution of random pulses 55 at the outputs of the generators is the same, since they simulate one device.

The generator gates 12 with a random duty cycle is used to simulate the failures of the service device. The law of the distribution of intervals of the strobe E5 is determined by the law of the onset of the event consisting in the failure of the servicing device, and EA: the cone of the distribution of the duration of the strobes is determined by the law of the distribution of the recovery time. The signals from the first and second outputs of the generator 12 are removed in antiphase. The HE element 14 serves to conduct signals at the inhibitory input of the generator 10 to the form of signals at a similar input of the generator 11. The diode 13 serves to isolate between the second output of the generator 12 and the trigger input of the 1 O generator. Differentiating element 15 serves to differentiate the leading edge of the generator 12 and setting triggers 5 and 6 to their original position with the received pulse. Diodes 16 and 17 serve to isolate between the outputs of generators 10 and 11. Diode 8 serves to isolate between the output of the AND 9 element and the input of the trigger 6. The device can operate in four modes: servicing by low priority; high priority wok service; servicing of high priority requests received in the period of low priority service; simulation of service device failure. The device works as follows. In the initial state Yo of all modes, the triggers 5 and 6 are set to a state in which a high potential is set at the outputs connected to the elements AND 3 and j, and the control input of the BANNER 7 element does not have a voltage and is open. Service for low priority wok. The impulse from input 2 through elements 4 and 7 and diode 8 starts generator 11, trigger 6 is switched to the state in which element I is closed until the end of service for the incoming application. Those arriving at input 2 for the service are not accepted and are lost. After the termination of the servicing of applications, the pulse from the output of the generator 1 1 switches the trigger 6 to the state in which from its second output to the second input of the element I, the potential is allowed to open and it opens. Service for high priority wok. The impulse from the input 1 through the open element AND 3 starts the generator 10 and transfers the trigger 5 to the state closing the element AND 3 before the end of the service. In this case, the control of the input of the element BANCH 7 is supplied with a control voltage and it closes. No applications arriving at inputs 1 and 2 are accepted for service, as elements 3 and 7 are closed, respectively. At the end of the service and the appearance of the impulse C at the output of the generator 10, the circuit is restored to its original state — trigger 5 is tilted and elements 3 and 7 open. Serving the high priority requests that arrive during the low priority demand service. For a low priority from input 2 through the open element I, the generator 1 1 starts up and overturns: trigger 6, and the element AND closes. on the exit of the element And 9 enters the resolving potential. By applying a high priority to input 1 before the generator 11 ends, the open element 3 starts the generator 10, sets the generator through the diode 13 to the initial state (which simulates stopping the low priority application) and triggers the trigger 5 This closes the elements AND 3 and BAN 7. In this state, the device is held until the end of service of the application with high priority. After the appearance of a pulse at the output of the generator 10, imitating the end of service of a high priority application, trigger 5 reverses. Opening elements 3 and 7. At the same time, this pulse passes through element 9, at the second input of which there is a resolving potential from trigger 6, to start generator 11, this simulates the re-maintenance of a low priority application, the maintenance of which was interrupted by the receipt of a high priority application. Prior to the end of service, trigger 6 holds element AND in the closed state, and element 9 in the open state. After the appearance of a pulse at the output of the generator 11, the device returns to its original state.

When a high priority application arrives at input 1 before the end of generator 11 operation, the low priority application service is again interrupted by setting the generator 11 to the initial state with a pulse from the output of the AND 3 element and the device repeats in the same way.

Simulation of service device failure.

The generator 12 generates gates with a random ratio. In this case, the random interval of the gates following is determined by the law of the distribution of the mean time between failures of the modeling device, and the duration of the gate is determined by the law of the distribution of the average time of recovery. .

With the entrance to the inhibitory inputs of the generators 10 and 11, the gate from the hegerator 12 is first zeroed out and maintained in such a state until the end of the gate, which simulates a failure of the service device. If at this time the application is serviced in one of the specified modes, it will stop all applications received during the restoration of the servicing device, are not accepted for servicing and are lost. In this case, the state of elements 3–7 and 9 is arbitrary.

At the end of the strobe, the differentiating element 15 differentiates the front of the strobe HWI and sets the triggers 5 and 6 to the state opening the elements 3 and 3, respectively. In this case, the device is ready for operation in any of the first three modes before the generation of the next gate by the T2 generator begins.

The technical and economic effect of the device is to expand its functionality.

Claims (1)

DEVICE FOR MODELING THE PROCESS OF MAINTENANCE OF APPLICATIONS WITH VARIOUS PRIORITIES, containing two pulse generators with a random interval, two triggers, the first decoupling diode, Eshmenty AND, and the input of applications of high priority of the device connected to the first input of the first element And, the output of which is connected to the triggering input pulse generator with a random interval and to the first input of the first trigger, the first output of which is connected to the second input of the first element And the output of the First A pulse pulse with a random repetition interval is the first output of the device and is connected to the second input of the first trigger, the second output of which is connected to the control input of the FORBID element, the information input of which is connected to the output of the second element AND, the output of the FORBID element is connected to the first input of the second trigger and through the first decoupling diode - with the output of the third element And and with the triggering input of the second pulse generator with a random interval, the output of which is the second output of the device and connected to the second input of the second trigger, the first output of which is connected to one of the inputs of the second element And, the other input of which is the input of low priority applications of the device, the second output of the second trigger is connected to the first input of the third element And, the second input of which is connected to the output of the first generator pulses with a random repetition interval, characterized in that, in order to expand functionality by simulating failures of the service device, a strobe generator with random th duty cycle, the element NOT, the differentiating element and three decoupling diodes, the first output of the strobe generator with a random duty cycle is connected to the input of the differentiating element and through the element is NOT connected to the prohibiting input of the first pulse generator with a random interval, the output of the differentiating element is through the second decoupling diode connected to the second input of the first trigger and through the third decoupling diode connected to the second input of the second trigger, the second output of the strobe generator from a random well connected to the inhibitory input of the second pulse generator with a random repetition interval and through the fourth decoupling diode,> 10356 And turned on in the opposite direction, a torus of pulses with a random interval with the triggering input of the first successor general.