SU1113831A1 - Device for generating address signals - Google Patents

Abstract

A DEVICE FORMING ADDRESS SIGNALS, containing in the encoder a power source, in parallel with which fixed contacts of two-position switches are connected, neutral wire of the communication line, whose wires are connected respectively to the inputs of the decoders, in order to increase the information content of the device by combining the wires of the communication line , the device introduced two-way switches according to the number of decoders and limiting resistors in the encoder, the first fixed contact of each d The transfer switch is connected to the moving contact of the corresponding two-position switch of the encoder, the neutral wire of which is connected to the second fixed contacts of the two-position switches connected to the neutral wire of the communication line; negative and positive poles of the power supply, zero wire ling Communication is connected between the limiting resistors. 00 eo DO

Description

The invention relates to telemeanic and can be applied to the formation and decoding of signals in multi-wire telecontrol systems. A device for generating address signals in multi-wire telemechanic systems is known, comprising an encoding unit whose outputs are via; the respective wires of the communication lines are connected respectively to the inputs of the C11 decoding unit. The device for generating address signals containing the power source parallel to which fixed contacts of two-position switches are connected, the movable contacts of which through the corresponding communication wire are connected with the corresponding a descrambler, and a neutral wire fii. . A disadvantage of the known device is its low information content. The purpose of the invention is to increase the information content of the device. The goal is achieved by the fact that in the device for generating addressable signals, the encoder contains a power source in parallel to which fixed contacts of two-position switches are connected, a neutral wire of the communication line, the wires of which are connected respectively to the inputs of the decoders, two-position switches for the number of decoders and limiting resistors are introduced in the encoder, the first fixed contact of each two-position switch is connected to the movable contact of the corresponding two-way The position encoder switch, the zero wire of which is connected to the second fixed contacts of the dip switch connected to the neutral wire of the communication line, the movable contacts of the dip switch are connected to the corresponding 1 1 and wire lines of the encoder connected in series with the negative and positive poles of the encoder between the negative and positive poles, connected to the negative terminals of the encoder are connected between the negative and positive poles of the encoder connected to the poles of the link and connected to each other. The neutral wire is connected between the limiting resistors. Fig. 1 shows a structural scheme of the proposed device; the fi schematic diagram of one of the decoders, which is the address group of controlled points (KP) in Fig. 3, is a table, which is used to verify the logical operations of the KP of this address , groups from code combinations of other address groups, The device (figure 1) contains the encoder 1, two-position switches 2 - 2 encoder two-position switches 3 ,,, the first decoder 4;. the last decoder 4. Switch Sn is depicted in the position at which. The common wire of the encoder is connected to one of the line wires. The remaining switches are in the upper position and connect the linear wires to the potential buses of the encoder. With this position of the switches 3i - 3f, is connected to receive address combinations, for example, the first decoder 4i. To deliver the address parcels to another decoder, the corresponding switch must be set to the lower position, and all the others to the upper position. The device also contains a power source 5, limiting resistors 6 and 7, wires 8–8 m of the communication line and a zero wire 9 of the encoder. Figure 2 shows an example of a decimator for a four-wire line, where 1, 2, 3, 4 are the numbers of linear wires . The line wires through the corresponding diodes are connected to the relay, the contacts of which carry out the closure of the circuit in the corresponding controlled point KP (bottom of Fig.2). Subsequent address groups of the device connect to the same line wires that continue in the direction of the arrows. The device works as follows. The operating position of the switches 3 is such that when the movable contact only at one of them is in the lower position, the other switches 3 have movable contacts in the upper position. In this case, only one specific KP address group can be serviced, the specific actuation of the selected KP depends on the position of switches 2 of encoder 1. Each code combination, depending on the state of switches 2, corresponds to one of the monitored points of this decoder. When another switch 3 is installed in the lower one and the other switches in the 3 l upper position, the address parcels are fed to another decoder. Similar to the combination of the state of the switches 2 in the encoder, it is possible to transmit a signal to any KP of the corresponding decoder. In each address group (for address systems using any number of linear wires) the second and penultimate control are not protected from

second and penultimate address combinations of other groups. Therefore, the second and last but one address combinations are excluded from all address groups, with the exception of any one group. This circumstance is reflected in the table in FIG.

Based on the analysis of the above table, a pattern of code formation in the proposed device is revealed. The number of unambiguously decoded address combinations N (the possible number of served KPs) is determined by the expression

. (-2) + 2,

where n is the number of linear wires.

The proposed device is significantly better known when using telecommunications lines of five or more wires.

The use of the proposed device in telemechanical systems allows increasing their informativeness with the same number of wires of the communication line, since (as follows from the principle of operation) the number of addressable signals in the system increases approximately I-n times

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Claims (1)

DEVICE FORMING ADDRESS SIGNALS, containing a power source in the encoder, in parallel with which are fixed contacts of the on-off switches, a zero wire of the communication line, the wires of which are connected respectively to the inputs of the decoders, characterized in that, in order to increase the information content of the device by combining the wires of the communication line, the device introduced two-position switches according to the number of decoders and limit resistors in the encoder, the first fixed contact of each two-position The on-off switches are connected to the movable contact of the corresponding on-off switch of the encoder, the neutral wire of which is connected to the second fixed contacts of the on-off switches connected to the zero wire of the communication line, the movable contacts of the on-off switches are connected to the corresponding wires of the communication line, the encoder's limiting resistors are connected in series between the negative and the positive poles of the power supply, the neutral wire of the communication line is on chen between the limiting resistor. tut.l