SU723562A1 - Arrangement for shaping interrogation signals of subscribers - Google Patents

Description

I

The invention relates to computing technology and can be used to use various types of distributed subscribers or sources of information.

A device for generating polling signals is known, comprising a sensor of polling cycles, a pulse generator, a counter, a decoder, triggers, differentiating chains, coincidence circuits, an element OR III.

The disadvantage of such a device is the considerable cost of the equipment.

It is also known a device for generating polling signals containing large-scale dividers, subtractors, switches, amplifiers, counters, generators, interpolators and computer f2.

The disadvantage of the device is that it is expensive because of the need to use a computer.

The closest to the invention in technical essence and the achieved result is a device for generating subscriber polling signals comprising a control unit, a calculator, an IL11 element, two groups of gates and a group of reading units Z. The disadvantage of the device is low speed.

The purpose of the invention is to increase speed.

This is achieved by the fact that a device for generating subscriber polling signals containing a control unit whose address input is connected to an output of an adder, a group of registers whose outputs are connected to information inputs of the corresponding; their switches, outputs of which are connected to the inputs of the element OR parameters of subscribers, with a group of information inputs-outputs of the control unit connected to the inputs-outputs of the memory block of parameters of subscribers, a group of inputs and outputs of the address-subscriber of the control block vhodamivyhodami connected to the registers, output of OR element connected to aanji: Clute input block

the controls permitting the outputs of the kotorop are connected to the control inputs of the switches, the group of interrogation outputs of the control unit is the group of outputs of the device, and the input of the adder is connected to the output of the control unit.

The drawing shows a block diagram of the device.

A device for generating subscriber polling signals comprises

OR 1, switches 2, 3, registers 4, 5, control unit 6, adder 7, block 8 of subscriber parameter memory, group 9 of outputs. In addition, the drawing shows: 10 - address input of the control unit, 11 - trigger input of the control unit, 12 - input-output group, subscriber address of the control unit, 13 permitting output group of the control unit, 14 - polling output group of the control unit, 15 - group information inputs / outputs of the control unit.

The device works as follows.

In block 8, the addresses and values of the polling periods (parameters) of subscribers are stored. The operation of the device begins with the formation of the model of the occurrence of information on the values of the periods by repeatedly recording the subscriber's address in the corresponding registers 4,5. The register number for any subscriber address is determined by the formula

.

where tg - register number 4, 5,, 2j

...P; K - krZ (}) fitsiyent, defining

tact number of the control block t, - the polling period of the subscriber with

i -th address.

The calculation of the register number 4, 5 is performed in the adder 7 for each address of the subscriber. In the received register numbers 4, 5 the addresses of the subscribers are entered. After the last address is written, the dispenser is switched on to the control unit (not shown in the drawing). At the outputs 13 of the control unit 6, pulses appear, which in turn control the operation of the switches 2, 3. The frequency of the output signals of the distributor in the control unit 6 is selected from the condition of the reproduction accuracy of the current time.

In the event that in some register 4, 5 the addresses of the subscribers are written, then the signal appears at the output of the corresponding switch 2, 3, which through the element OR 1 acts on the input 11 of the control unit 6. By this signal the control unit 6 reads the address of the subscriber recorded in the register and through the outputs 9 performs

poll

If in registers 4 ,. 5 the addresses of the sources ai are not recorded}), the signal at the output OR 1 is absent and the start of the control unit 6 does not occur. Thus, the invention allows

increase speed by reducing the overhead of time processing redundant information.

Claims (3)

1. USSR Author's Certificate No. 395830, cl. G About F 3 / O4, 1973. 2. USSR author's certificate M) 437081, cl. G 06 F 15/46, 1974. 3. USSR author's certificate NV 427335, cl. G 06 F 3/04, 1974 (prototype).