SU1042024A1 - Multi-channel reserved device - Google Patents

Abstract

A MULTI-CHANNELS BASED DEVICE containing serially connected main blocks and control blocks, the outputs of which are connected to the inputs of the first element OR the output of which is connected to the first input of the priority block, the number of channels and backup blocks in each channel start from the third, the element AND, characterized in that, in order to increase the reliability of the device, it contains in each channel, Hia since the third, the second element OR, in each channel, starting from the second, ... I the third element OR and in all channels - element ommutatsy chains filament, e hemenh circuit switching power element and a switching signal source trigger circuits, a single input coupled to an output priority block, and an inverse output - to the input of block -prioritetov. The control input of the switching element of the signal source circuits is connected to the trigger output of this channel and in all channels, starting from the second, to the first input of the third OR element, whose output is connected to the control input of the switching element of the power supply circuits and in all channels, starting from the third, the first inlet of the second element OR is connected to the first input of the element and the second input is from the AND element, the third input is connected to the output (/) of the trigger, and the output is to the control input; the house of the element ks "4uatsii chains nakaka-. the second input of the AND element is connected to the trigger output of the previous channel, and the output is connected to the second input of the third OR element and to the first input of the AND element of the subsequent channel; the second input of the third OR element of the second channel is connected to the trigger output of the first channel and the first the input element And the third channel.

Description

The invention relates to radio electronics and automation and can be used (used for automatic backup of radio systems.: A multi-channel redundant device is known which performs on signals from control elements with the help of logic circuits and key elements of automatic switching to. Reserve 1. Disadvantage devices - a sharp increase in equipment volume with an increase in the number of channels.The closest to the technical essence of the invention is a multichannel redundant system containing Main and backup blocks, priority block, multi-input elements OR, AND elements, control blocks, indications and frequency tuning 2. The disadvantage of this device is the incomplete use of structural redundancy for improving reliability / since the backup blocks are constantly in working condition regardless of whether the main unit failed or not. The purpose of the invention is to increase the reliability of the device. The goal is achieved by the fact that a multichannel redundant device containing The main units and control units, the outputs of which are connected to the inputs of the first OR element, the output of which is connected to the first input of the priority block, by the number of channels, are the backup units and in each channel, starting with the third, And contains, in each channel, starting with the third , the second element OR, in each channel, starting from the second, the third element OR, and in all channels, the switching element of the heating circuit, the switching element of the power supply circuits, the switching element of the signal source circuits and the trigger, the single input of which is connected to the output the priority and the inverse output with the input of the priority block, the control input of the switching element of the source signal. The signal is connected to the trigger output of this channel and in all channels, starting with the second, with the first input of the third OR element, the output of which is connected to The control input of the power supply switching element and in all channels, starting from the third, the first input of the second element OR, is connected to the first input of the AND element, the second inlet is connected to the second input of the AND element, the third input is from the output three, and the output is with control input This switching circuit makala second input element AND connected to the trigger output of the previous channel and the output from the second input of the third element OR to the first input of the element AND the subsequent channel, the second input of the third element OR of the second channel connected to the output of the first channel trigger and third channel. FIG. 1 is a functional scheme of a multi-channel redundant device; Figure 2 is the same. Priority block. The device contains the first element OR 1, the priority block 2, the backup channels, each of which contains the trigger 3, the switching element 4 of the heating circuits, the switching element 5 of the power supply circuits, the switching element 6 of the signal source circuits. All channels, starting with the second, have the second element OR 7, and, starting with the third, the third element OR 8 and the element 9, the main blocks 10, the control blocks 11, the single inputs 12 triggers, the backup block 13 information inputs 14 occupancy channels, elements 15-17, element NOT 18. The principle of the device is that in case of failure of the main blocks, the signals of failures arrive at priority block 2, which controls the switching on of reserve blocks 13 in accordance with their priority. At the same time, the first channel has the highest Priority, and each village of the next has a lower priority than the previous one. The operation includes a backup unit 13, which by the time of the next failure has the highest priority of all free backup units. The presence of the block is due to the need to order the search and include free spare blocks. When a request pulse priority arrives at the request input, it will output a signal at that channel that has a higher priority relative to other unoccupied channels (when the channel is empty, a high level signal is present at the corresponding input of the priority block). The device performs the dynamic switching of the backup units 13 from the unloaded reserve state (signal sources, voltage and supply voltage are not included) to the lightweight reserve state (heat is turned on), then in the state of load reserve (power sources and voltage supply are turned on ) and, finally, in the worker (all sources are included). In this case, all switchings are carried out in strict accordance with priority. In any number and order of placement of occupied reserve units .13, always free reserve unit 13 with the highest priority is in a loaded reserve, with a lower priority. In a lightweight reserve.

and all the rest - in the unloaded. In the initial state, when all the backup units 13 are free, the first is in the loaded reserve, the second in the lightened, all the others in the unloaded reserve.

The operation of the device according to the table, where P is the operating mode; G — loaded reserve (hot reserve); O - finite reserve; X unloaded reserve (cold reserve).,

The device works as follows. In the initial state, all the zero inputs of the triggers 3 are informational. inputs 14 (busy signals are given with a level of logical i indicating channel idleness (this means that all backup blocks are free), the outputs of flip-flops 3 are signals with a level of logical O. At the outputs of elements 7, 8 and 9 of all channels also Signals with a logic level O are set. The switching elements of the filament 4 of the first and second channels and the switching element 5 of the power supply circuits of the first channel are in a closed state, and all the other switching elements 4.5 and 6 of the other channels are open. This means that the first one is in the mode of a loaded reserve, the second is a lightweight reserve, and all the rest are in an unbalanced reserve.If the main unit 10 s of its control unit 11 fails through an element OR 1 to the input of the priority unit 2 a failure signal arrives. At the first priority output, a signal appears with a logic level that enters unit input 12. Trigger 3 of the first channel and changes its state. At the trigger output, a signal appears with a logic level. This signal is received: at the control input of the switching element 6 of the source circuits of the signal of the first channel, which is activated, thus turning on the first backup element; to the input of the second element OR 7 of the second channel, at the output of which a signal appears with a logic level arriving at the control input of the power supply switching element 5 of the second channel, which triggers the latter and switches the channel to the loaded reserve mode; to the second input of the element OR 8 of the third channel, at the output of which a signal appears with a logic level, which, arriving at the control input of the circuit switching element 4, heats the third channel, triggers the latter and switches the third channel to the lightweight reserve mode; at the first input element .and 9 of the third channel. If the second main unit fails and the second signal arrives, it disappears. The second output of priority block 2 will receive a signal that changes the state of flip-flop 3 of the second channel. At the flip-flop output, a signal is detected at a logic level that goes: to the control input of the switching element 6 of the second channel signal source, which r triggers channel to work mode; at the first input of the element - OR 7 of the second channel and at the second input of the element OR 8 of the third channel; to the second input of the element And 9 of the third channel; The signals at the inputs of the element 9 tert its channel coincide in level, which leads to the appearance at its output of a signal with a logic level which goes: to the second input, element 7 of the third channel, the output of which A signal with a logic level that acts on the control input of the switching element of the power supply circuits of the third channel, thereby transferring this channel to the loaded reserve mode at the first input of the item 8 of the fourth channel, which results in a signal at ur output vnem logic, which impacts on the control member is l fourth channel switching circuit heater input leads to its actuation that transitions the channel into va facilitated Rezer mode; on the first input element 9 subsequent channel. With further receipt of the failure signals, the device operates in the same way. With each new failure signal, a channel with a lower priority (i.e., a backup unit of this channel) is taken, the next channel is switched to the loaded reserve mode, the next to the lightweight reserve mode, and all others remain in the unloaded reserve mode. If this frees up a higher priority spare unit, then the device will proceed in the next step. Let you occupy the first and second channels, i.e. backup blocks of these channels are in operation. In this case, the third channel is located in a loaded reserve, the fourth in the observatory, and the subsequent ones in the unloaded reserve. Assume that the backup unit is released first. At the same time, it sends a release signal of the channel with the logical level of the informational input 14 of the first channel to the zero input of the trigger 3, which is set to the zero state, i.e. at its output, a signal is set with a logical one .O. This signal arrives: at the input of the switching element b of the source circuit of the signal of the first channel, including it and, thus, transferring the first channel to the loaded reserve mode; to the second input of the element 7 of the second channel and to the first input of the element 8 of the third channel, however, the state of the outputs of these elements does not change, since the rest of the inputs continue to act signals from the logical 1, from the output of the trigger 3 of the second channel; at the first input element And 9 of the third channel. The mismatch of the signal levels at the inputs of the element 9 of the third channel leads to a change in the output state of this element, where the signal now operates at the logical O level. This signal arrives: at the second input of the element 7. of the third channel, at the first input of which also acts. em signal with a logic level .O. from the output of the trigger 3 of this channel, which results in the output at the output of the element OR 7 signal with a level of logic O, which, arriving at the control input of the power supply switching elements 5 of the third channel, turns it off, putting this channel into the lightweight reserve mode; at the first input of the element OR 8 of the fourth channel, which leads to the appearance at its output of a signal with a logic level O, which, acting on the control input of the switching element of the heating circuit of this channel, turns it off, switching the fourth channel to the unloaded reserve mode, neither the elements of the subsequent channels are changed. Now, with the arrival of the next failure signal, the free backup channel, which has a higher priority than other free backup channels, is activated. volume, in this case first. When this process proceeds, similar to those described. The proposed multi-channel redundant device is distinguished by the fullest use of the structural capabilities of the reserve, which is achieved by dynamically switching on the backup units. At the same time, all the backup units are switched from the unloaded reserve mode to the lightweight mode and further to the loaded reserve mode, and the overhead is reduced resource of reserve blocks (as compared with the case of their use in a loaded or lightened reserve) and significantly reducing the commissioning time (as compared with the case of their use in an unloaded reserve), which results in an increase in the reliability of the redundant system as a whole.

In addition, the device has the property of adapting to specific working conditions, has switched the mode of operation of backup channels depending on the actual situation,

taking into account the states in which all the backup elements are located, the channels of the device, starting with the third, are made completely identical, which easily allows to increase the device without additional equipment costs, and also facilitates operation and improves its maintainability;

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Claims (1)

MULTI-CHANNEL RESERVED DEVICE containing main blocks and control blocks connected in series, the outputs of which are connected to the inputs of the first OR element, the output of which is connected to the first input of the priority block, there are redundant blocks in each channel and, starting from the third, the AND element, which differs the fact that, * in order to increase the reliability of the device, it contains in each channel, starting from the third, the second OR element, in each channel, starting from the second, ..., the third OR element and in all channels - the switching element chains naka la, the battery switching circuit _grams circuit switching element source signal and the trigger unit whose input is connected to the output priority block, and an inverse output - to an input of priority unit, the control input signal element switching source circuits connected to the output latch of the channel and in all channels, starting from the second, with the first input of the third OR element, the output of which is connected to the control input of the switching element of the power circuits and in all channels, starting from the third, the first input of the second AND element LI is connected to the first input of the And element, the second input is to the second input of the And element, the third input is with the trigger output, and the output is with the control input of the glow circuit switching element, the second input of the And element is connected to the trigger output of the previous channel, and the output is the second input of the third OR element and with the first input of the AND element of the subsequent channel, the second input of the Third OR element of the second channel is connected to the output of the trigger of the first channel and the first input of the And element of the third channel. -•I"· 09and> .1042024