SU809296A1 - Adaptive switching device of information objects - Google Patents

Description

one

The invention relates to automation devices and can be used to collect information in automated control systems.

A device is known to control the polling order of information Objects, which contains a central unit and several local remote controllers, each interconnected by a common bus. This device performs a cyclic polling of information objects as they become available. During the transfer of information from one object, other objects are not polled. L.

A disadvantage of this device is its low speed and limited functionality, since it lacks nodes and communications, allowing kmdiyas to automatically conduct priority polling of priority objects depending on their readiness and degree of importance.

The closest to the proposed switch is by its technical nature an adaptive switch for polling information objects that contains a block of output cells of information objects whose outputs are connected to the first inputs of key elements of a sequential information output unit, the second inputs of which are connected to the corresponding outputs of a distributor information output connected to the first inputs of the information reading unit and the inputs of the control unit

o by a distributor whose output is connected to the distributor input, the outputs of the information reading block are connected to the switch output terminals, and the outputs of the priority setting block and output cells of the information object block are connected to the inputs of the priority information extractor block, the outputs of which are connected to the corresponding inputs1

0 of the OR element and the value highlighting block, the output of the OR element is connected to the third inputs of the key elements of the sequential information output block, and the outputs

the priority information allocation unit, the information significance block and the corresponding distributor outputs are connected to the corresponding inputs of the key elements 0 of the priority information output unit.

the outputs of each of which are connected to the inputs of the control unit of the distributor and the second inputs of the information reading unit 2.

However, in a known switch, there are no nodes and communications that allow control over the accuracy of the output information and the normal operation of the constituent units, which reduces the switch's brushiness.

The purpose of the invention is to increase the reliability and reliability of the switch.

The goal is achieved due to the fact that a block of protection of a distributor against interference, a block of memory, a block of protection of the output path of the block of a reader against failures, are inserted into it. the distributor state control unit and control indicators, the distributor protection block inputs from the distributor state control block and the memory block are connected to the corresponding output / distributor first output of the distributor state control unit connected to the second distributor input and to the fourth inputs of key elements of the sequential block information output and priority information output block; the output of the distributor protection block is connected to the third input of the distributor control unit and the input ne In the control indicator, the fifth inputs of the key elements of the sequential information output block and the priority information output block are connected to the corresponding outputs of the memory block, the outputs of the information reading block are connected to the corresponding inputs of the protection block of the output path of the read block whose output is connected to the fourth input of the control block distributors - and the input of the second indicator; the second output of the distributor state control unit is connected to the input of the third control indicator.

Figure 1 shows the block diagram of the switch.

The switchboard contains a block 1 of output cells of information objects, a valve 2, a block 3 of control valve, a block 4 for extracting priority information, a block 5 for sequential output of information with key elements 6-8, a block 9 for outputting priority information with key elements 10-12, a block 13 prioritization, element 14 OR, information significance allocating unit 15, information reading unit 16, distributor zayty block 17, memory block 18 with key elements 19-21, readout block output path protection block 22 c, distributor state control unit 23, control indicators

24-26, output terminals 27-29 switch.

The switch works as follows.

The interrogation of information objects, in the absence of priority, is carried out in the usual way - sequentially. At each step of the distributor 2, on condition that a signal is received with the corresponding actions for this step of the distributor 2 of the output cell of block 1, one of the key elements 6-8 of block 5 of the sequential information output is triggered. The output signal from the selected element on one side goes to the distributor control unit 3, which stops the distributor 2, and on the other hand to one of the first inputs of the information reading unit 16, thus allowing the selected object to be polled. During data transfer, other objects are not polled. After the end of the polling, the start-up prohibition signal of the distributor 2 is removed and the polling of other objects begins. In the presence of priority, which is set by block 13, the priority signal is fed through one of the buses of block 13 to the first inputs of block 4 of the priority information extraction, to the second inputs of this block signals are received from -block 1 output cells of information objects. When these two signals coincide, the output signal from block 4 goes to the corresponding second inputs of the key elements 10-12 of block 9, output the priority information, to the corresponding inputs of the value-information allocation unit 15 and item 14 OR.

As a result, the operation of element 14 OR on the third inputs of the key elements 6, 7, 8 of the block 5 of the sequential output of information a prohibition signal is issued, as a result of which the key elements of the block 5 will not be polled, but the key elements of the 10-12 block 9 will be polled output priority information. If there is a signal on the corresponding key element of the distributor step 2 and there is a priority signal from the outputs of block 4, one of the key elements 10-12 of block 9 will be triggered, the output of which goes to the distributor control block 3 and to one of the second inputs of the read block 16 .

Claims (2)

The information significance allocation unit 15 allocates priority objects in order of their importance. As soon as unit 15 selects the degree of significance of priority objects, the output signal from block 15 over the bus with the highest degree of significance will go to the corresponding first input of one of the key elements 10-12 of block 9, output priority information, and on other output buses of block 15 to the first inputs key elements of block 9 enters b prohibitions. Thus, the survey of the selected key element with the highest degree of significance will be carried out first. The subsequent survey of key elements of block 9 will be carried out similarly, depending on the degree of importance of priority objects. Protection against interference of the distributor 2 and its monitoring is carried out by blocks 17 and 23. The inputs of block 17 are connected to the corresponding outputs of the distributor 2. The occurrence of interference in the distributor 2 channels triggers the protection unit 17, which in turn acts through its output to the distributor control unit 3, prohibits the operation of the latter, and the indicator 24 signals the presence of faults. To check the status of the distributor 2, a trigger signal is sent to its second input from one of the outputs of block 23, and to the fourth inputs of the key elements of the block 5 of sequential information output and block 9, the output of priority information is inhibited, i.e. The control of the distributor 2 is carried out in idle mode by comparing its mode of operation in several cycles, in the case of the restoration of the mode and the light of the indicator 26, the functioning of the switch resumes. Protection against distribution distributors 2 with regard to the sequence of polling information objects is carried out by means of a memory block 18, which stores a cell, the interrogation of which is performed at a given moment, prepares a cell, the next interrogation of which is assumed. Protection against failures and faults on. the output of the information reading block 16 is performed by the block 22, the inputs of which are connected to certain outputs of the block 16, and the output is connected to one of the inputs of the distributor control block 3. The occurrence of failures at the output of block 16 triggers the block 22., which, in turn, affects block 3, stops the distributor 2, and the indicator 25 illuminates to indicate that any malfunctions have occurred. Thus, the introduction of a survey of information objects of the above-mentioned blocks into the public switchboard allowed us to significantly increase the accuracy of the output information and significantly improve the reliability of the device. The Adaptive Information Object Interrogation Switchboard, containing a block of information cell output cells, the outputs of which are connected to the first inputs of key elements of a sequential information output block, the second inputs of which are connected to corresponding outputs of the distributor, the outputs of key elements of a sequential information output block are connected to the first inputs of a reader block information and the corresponding first inputs of the valve control unit whose output is connected with the first input of the distributor, the outputs of the information reading unit are connected to the output terminals of the switch, the priority setting unit, the outputs of which and the outputs of the output cells of the information objects are connected to the corresponding inputs of the priority information extraction unit, the outputs of which are connected to the corresponding inputs of the OR element and the information significance extractor , the output of the OR element is connected to the third inputs of the key elements of the sequential information output block, the outputs of the priority selection block The information, the information significance highlighting unit and the corresponding outputs of the distributor are connected to the corresponding inputs of the key elements of the priority information output block, the outputs of each of which are connected to the second inputs of the distributor control unit and the second inputs of the information reading block, characterized in order to increase the reliability and reliability of the switch, the distributor protection block against interference, the memory block, the output path protection block of the readout block against failures, the control block distributor status and control indicators, distributor protection block against interference, distributor status block and memory block are connected to the corresponding distributor outputs, the first output of the distributor state control unit is connected to the second distributor input and to the fourth inputs of the serial output key elements information and a block of output of priority information, the output of the valve distributor block is connected to the third input of the valve control unit and the input of the first indicator control torus n Tide input key element block serial output information and issue the priority information output block are connected to corresponding outputs of a memory block, the block information read Exit