RU2559702C2 - Electronically switched multichannel command apparatus - Google Patents

Abstract

FIELD: physics; control.

SUBSTANCE: invention relates to electronic engineering and automation and can be used to generate command pulses for controlling actuating elements. The technical result is achieved due to that the electronically switched multichannel command apparatus includes an interface 1 controller, a decoder 2 unit, a command 3 generating unit, a switch 4 unit, a reset 6 pulse former and a bus former 7 unit, wherein the decoder 2 unit includes a command decoder, the command 3 generating unit is based on JK flip-flops, each having a clock input, J and K inputs, a reset input and a control output.

EFFECT: high reliability of the electronically switched multichannel command apparatus by enabling control of transmission of control commands to switch inputs.

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Description

The invention relates to the field of electronic equipment and automation and can be used in control systems for actuating elements, in particular in control systems for spacecraft, in robots, robotic lines, etc.

A device for coordinated multi-channel control of a group of objects is known that implements the control method according to RF patent No. 2224278 G05B 11/14, the disadvantage of which is the constant employment of the general part of the equipment directly by the formation of the output command and the impossibility of simultaneously issuing two or more commands in connection with the established sequence of services.

Closest to the claimed device is a multi-channel command apparatus with electronic switching that implements the method of such control according to RF patent No. 2340925 G05B 11/00. The known device is made using nodes that perform almost the same functions as in the proposed device. According to the essential features and functions performed, it can be recognized as a prototype. The claimed device contains (like a prototype) an interface controller connected in series, a decoder unit, a command generation unit, a key unit, the outputs of which are outputs of a multi-channel command apparatus.

The disadvantages of the prototype are the formation of control commands of indefinite duration during the installation of the control system, caused by the arbitrary state of the counters after applying the supply voltage to all units of the device, as well as the lack of control of the passage of control commands to the key inputs.

The objectives of the proposed technical solution are to increase the reliability of the device by eliminating the conditions for the formation of control commands of indefinite duration and expanding functionality by providing control of the passage of control commands to the key block.

These problems are solved by the fact that a multichannel command device with electronic switching, containing an interface controller connected in series, a decoder unit, the address decoder inputs of which are connected to the address outputs and the first interface controller synchronization output, a command generation unit, a key block, the outputs of which are inputs of a multichannel command apparatus, and the block of actuating elements is equipped with a reset pulse generator and a bus former unit. The decoder unit is equipped with a command decoder, the inputs of which are connected to the input command outputs of the interface controller, the command generation unit is made on JK-triggers, each of which contains a synchronization input, J- and K-inputs, a reset input and a control output, and the control output of each of JK flip-flops of the command generation unit is connected to the control input of the corresponding key of the key block and to the corresponding information input of the bus former block, the corresponding outputs of which are connected to the input information inputs of the interface controller, and the synchronization input of the bus driver unit is connected to the input of the second synchronization output of the interface controller, the synchronization input of each of the JK triggers of the command generation unit is connected to the corresponding output of the decoder address of the decoder unit, the first and second control outputs of the decoder of the decoder unit commands are connected, respectively with the J- and K-inputs of all JK-triggers of the command generation unit, and the output of the reset pulse shaper is connected to the reset inputs Wasp of all JK triggers of the command unit.

The essence of the invention is illustrated using the drawing, which shows a block diagram of the proposed multi-channel command apparatus with electronic switching and connected to it the Executive elements of the product control system. The drawing shows: 1 - interface controller; 2 - block decoders; 3 - block forming teams; 4 - key block; 5 - block actuators; 6 - reset pulse shaper; 7 - block bus shapers; E - bus power actuator elements; GND is a common bus.

The device blocks are made as follows:

1 - interface controller: D - its input / output bus (at the same time is the input / output bus of the device as a whole), and also (hereinafter) D - input / output information of the device; A - address output (as well as A - address bus); K - command output (as well as K - command bus); SS - information inputs (as well as SS - word state bus); SI1 and SI2 are the first and second synchronization outputs (as well as SI1 and SI2 are clock pulses). All inputs and outputs of the interface controller 1 are connected as follows: the outputs K and A are connected respectively to the inputs of the command decoder and the address decoder of block 2; the inputs of the SS are connected to the outputs of the bus formers of block 7; the outputs SI1 and SI2 are connected respectively to the synchronization inputs of blocks 2 and 7;

2 - decoder unit: D1.1 - command decoder, D1.2 - address decoder, A1 ... Ak are the individual names of the address bus circuits, A1 ... Am are the individual names of the address bus chains, ST is the synchronization input of the address decoder, ON and OFF - outputs of the command decoder, Y1 ... Yn - outputs of the address decoder (by the number of n output commands of the device). The outputs ON and OFF of the command decoder are connected to the corresponding control inputs of block 3. The outputs of the address decoder are connected to the corresponding synchronization inputs of block 3;

3 - unit for generating commands: D2.1 ... D2.n - JK-triggers (by the number of n output control signals of the device), C - synchronization input of each trigger, J and K - trigger control inputs, R - trigger reset input. To C - the input of each trigger is connected to the corresponding output of the decoder of the address of the block 2. The control output Q of each JK-trigger is connected to one of the inputs of blocks 4 and 7;

4 - key block: D3.1 ... D3.n - output keys of the block and the device as a whole (by the number of n output commands of the device); FN and OUT are respectively the control inputs and power outputs of these keys, switching the GND bus - the common bus of the device and the control system with which the device is connected. For key D3.n (as an example), the switched bus is bus E. The input and output of block 4 are galvanically isolated;

5 - block of actuating elements Рн.1 ... Rн.n of the product control system connected to the output keys D3.1 ... D3.n of the device, presented for simplicity in the form of resistive loads. In practice, these are the executive elements of various spacecraft systems or the executive elements of robots, robotic lines, etc .;

6 - reset pulse shaper, the output of which is connected to the reset inputs of all JK triggers of block 3;

7 - bus driver unit: D4 - bus driver, DI1 ... DIn - information inputs of the bus driver, DO1 ... DOn - bus driver outputs, EZ - synchronization input.

The device operates as follows.

The device is included in the product control system by supplying voltage to all its blocks, except for block 5 of the actuating elements (block 5 is turned on separately, the claimed device can serve several different blocks of actuating elements that are turned on at different times in different modes of operation of the product). At the moment of switching on, reset pulse 6 receives a pulse to the R-inputs of all JK-triggers of block 3 and sets them to the initial state, which corresponds to the absence of control commands at the outputs Q of all JK-triggers D2.1 ... D2.n. This condition persists until the initial installation and self-testing of the control system as a whole is completed. After installation and self-testing are completed, the device is ready for operation.

To generate the output pulse of the device (command to block 5 actuating elements), the necessary information is supplied to the input D of the interface controller 1. In the controller of interfaces 1, this information can be accumulated and / or immediately according to a predetermined algorithm in the form of a code on the command bus K to the inputs A1 ... Ak of the command decoder D1.1 and via the address bus A to the inputs A1 ... Am of the address decoder D1.2 of block 2 (the drawing shows only one decoder D1.1 and D1.2, but in real devices there are usually several). Each new code on the K command bus and the address A bus of the interface controller 1 is accompanied by a SI1 clock. The decoder unit 2 decrypts the incoming information to the inputs A1 ... Ak of the command decoder D1.1, generating ON or OFF signals at its outputs, and to the inputs A1 ... Am of the decoder address D1.2, forming a pulse at one of its outputs Y1 ... Yn by clock on input ST.

Then the following happens. The ON or OFF signals of the command decoder D1.1 go to the J- or K-inputs of all JK triggers D2.1 ... D2.n of block 3, preparing them for switching on or off, and the clock from one of the outputs Y1 ... Yn of the address decoder D1 .2 arrives at the C-input of the corresponding JK trigger of block 3 and transfers its output Q to the corresponding state. At the same time, a change in the state at the output of this JK trigger goes to one of the information inputs DI0 ... DIn of the bus driver D4 of block 7 to monitor this state (only one bus driver D4 is shown in the drawing, but in real devices there are usually several) and to the control input IN the key of block 4 for its inclusion and issuing the OUT command to turn on one of the actuating elements Rн.1 ... Rн.n. The duration of this command will be determined by the rate of change of the command code at the inputs A1 ... Ak of the command decoder D1.1, specified by changing the input information D of the interface controller 1 (it can be set at the request of the operator or in accordance with a given algorithm). Thus, any of the n output commands embedded in the input information D of the device can be generated.

If the command for some reason has not been executed (for example, a failure during the exchange via the device’s bus D), then it can be repeated. To this end, in the controller of the interfaces 1, it is possible to switch to the read mode of information on the change in the state of the control outputs of the JK triggers D2.1 ... D2.n of block 3. The change in the state of these triggers is monitored in the device as follows. The interface controller 1, after recording the next state of the JK-trigger of block 3, the SI1 clock is put into the reading mode of this state, followed by the SI2 clock. In this mode, the SI2 clock pulse is fed to the synchronization input EZ of the bus driver D4 of block 7 and reads the state of all JK triggers of block 3 from the information inputs DI1 ... DIn of the bus driver to its outputs DO1 ... DOn. The read information about the state of these triggers is transmitted via the SS word state bus through the interface controller 1 to the device bus D.

This control method is functionally more reliable, it allows you to obtain the necessary information about the status of the passage of commands to control the executive elements: after receiving information about the failure of the command, a second command can be promptly generated at the request of the operator or in automatic mode in accordance with the specified algorithm.

Despite the fact that block 2 decoders cannot fundamentally issue more than one command at a time, the device as a whole allows several commands to be issued to the executive bodies at once. For this, when according to the operating conditions of the device as part of the control system it is required to issue several commands simultaneously, the process of their formation is carried out as follows. The interface controller 1 at a fast pace according to the input information D alternately, using the address decoder of block 2, switches the necessary JK triggers from the number D2.1 ... D2.n of block 3 to the desired state. Using the output signals of these JK-triggers, the selected keys are opened from the number D3.1 ... D3.n of block 4 and include the required actuators Rн.1 ... Rн.n, each for its own programmed time. Since the speed of the electronics along the control signal path D-1-A-2-3-4 is orders of magnitude higher than the response speed of the actuating elements of unit 5 and the duration of their operation, the specified actuating elements are switched on almost simultaneously and can work together for a fairly long time.

If necessary, switching can be provided not only on the E bus, but also on the GND bus, for example, as shown for the Rn.n actuator.

On the basis of the principle of the simultaneous formation of bipolar teams, the control of actuators included in the two-coordinate matrix, including a reversing actuator, can be ensured.

A set of features, similar to that considered by the author in this proposal, has not been met before to solve the problem and does not follow explicitly from the prior art, which allows us to conclude that the technical solution meets the criteria of “novelty” and “inventive step”.

The considered multi-channel command apparatus with electronic switching will find application for controlling the executive elements of various products. Currently, such a device is at the stage of implementation in the design documentation of various products of the enterprise. The blocks of the proposed device can be performed on integrated circuits of any type and degree of integration, as well as field-effect transistors of the required type of conductivity, including (preferably) with intellectual properties, namely, protection against various overloads, overheating, etc.

Claims (1)

A multichannel command device with electronic switching, containing an interface controller connected in series, a decoder unit, the addresses of which decoder inputs are connected to the address outputs and the first output of an interface controller synchronization, a command generation unit, a key block, the outputs of which are outputs of a multichannel command device, and an actuator unit , characterized in that a shaper of reset pulses and a block of bus shapers are introduced into it, a decoder is introduced into the block of decoders a command rotator, the inputs of which are connected to the input command outputs of the interface controller, the command generation unit is executed on JK triggers, each of which contains a synchronization input, J and K inputs, a reset input and a control output, and the control output of each of the JK triggers of the formation unit commands is connected to the control input of the corresponding key of the key block and to the corresponding information input of the block of bus drivers, the corresponding outputs of which are connected to the input information inputs of the controller an interface controller, and the synchronization input of the bus formers unit is connected to the second synchronization output of the interface controller, the synchronization input of each of the JK triggers of the command unit is connected to the corresponding decoder output of the decoder unit address, the first and second control decoder outputs of the decoder unit commands are connected respectively to J and K inputs of all JK triggers of the command unit, and the output of the reset pulse generator is connected to the reset inputs of all JK triggers of the unit The team of teams.