SU911466A1 - Programme-control device - Google Patents

Description

(54) TIME FOR PROGRAM MANAGEMENT

-. . The invention relates to automation and can be used in process control systems.

A software control device is known comprising a generator, a tunable frequency divider, a valve, a time interval counter, a control trigger Q.

However, this device does not provide multi-channel formation of time. sequences of pulses.

Closest to the present invention is a device comprising a generator, a tunable frequency divider, a valve, a time interval interval count, a decoder, control triggers 2.

The drawbacks of the device are the limited functionality that is manifested in the absence of funds promptly. Reprogramming and two-way functional interconnection of the control of the facility to the facility.

The purpose of the invention is to expand the functionality of the device.

The delivered target is achieved in that a software control device comprising control triggers and serially connected pulse generator, pulse divider, valve, time counter and decoder, input control driver driver and a command setting unit, through which control triggers are connected to the first output of the command switching unit, the second output connected to the second valve inlet, and the output output to the second input of the time interval counter Alov, the output of which is connected to the first input of the switching command block, the second inputs of the device connected to the device, the second inputs of control triggers through the driver of control commands connected with the output of the decoder.

FIG. 1 shows a functional diagram of the device; in fig. 2 shows an example of execution of a command switching unit; in fig. 3 time diagrams.

3911466

The device contains a generator 1 of the reference frequency, a divider 2, a valve 3, a command switching unit 4, a 5 time interval counter, a decoder 6, a shaper 7 control commands, control triggers $ 8, ..., gf ,, mode setting command 9, inputs ll-16i, ... 16, outputs I0, .17i, ... i.

The generator 1 is connected to the input of a divider 2 with a variable division factor, which can be pre-installed on the flax, for example, using a key switch. The output of the divider 2 is connected to the first valve inlet .3, the output of which is connected to the input of the counter 5 time intervals. The 12-bit counter 5 is a three-dual-decimal counter connected to each other on the basis of the recalculated M-10. Three groups of binary bits of the counter are fed to the inputs of the decoder 6, the outputs of which are represented by .20 for 3 decades with different weighting coefficients AAS. The second valve inlet 3 is connected with the corresponding output of block 4 (Fig. 2). The command switching unit 4 is built on OR elements, F 25 single pulse generation circuits, TI and Tr triggers, 3 delay circuit, amplifier Y, relay P, OPi elements, and optocoupler. Outputs-inputs P ,, Pg, Ost. 1, Ost. 2, Set, YUDA of block 4 are connected with the corresponding outputs-inputs of the device, and the outputs-inputs Start, Coll. 1, Sat. 2, КЦ, 2 - with the corresponding outputs of the blocks of the device.

This scheme of the command block allows you to organize several modes,. device operation.

1. Starting and stopping mode of the device from the automatically closing contacts of the control object. For these purposes, galvanically developed circuits HI, OST are used. 1, KUj.

2. MODE of autonomous control of the device, for example, from the control panel on the Center of FIj, Ost. 2, Const.

The RSG signal can be used to count the device operation cycles, to indicate, and to inform you that the device is ready.

The outputs of the decoder are connected to the corresponding control inputs of the controllers of the flip-flop 8i, ..., 8 ,, through block 7, which is a diode array whose programming consists in extracting the given code values from all possible input variables Si nprf by sealing the jumpers.

The outputs of the control triggers are connected to the outputs of the device 17j, ..., 17 via

block 9. (Fig. 3), the inputs of which are connected to the corresponding inputs

6i 16g devices ..

The mode setting unit 9 is intended for operatively changing the program of the device through individual channels, for example, with the help of key switches connected to the setup inputs. There are three reprogramming modes, namely:

1. Multi-channel mode with a fixed number of time intervals (for example, 4) for each channel. FIG. 3 shows the time diagram 1 for the specified mode, when for each of the tn outputs of the device, we have a sequence of 4 pulses specified by block 7.

2. Single-channel mode with an increase in the number of output pulses due to the reduction of channels.

FIG. 3 shows mode 2, when one of the outputs (for example, 17i) can receive up to four rm pulses.

3. Single channel, but multiprogram mode, when one of the outputs (for example, 17i) can call various programs previously installed in block 7 according to a predetermined sequence of operation of the control object.

FIG. 3 shows that for any one channel (for example, 171), by switching the corresponding keys, you can get the program a, b, or c, and so on from various control programs. The device works as follows.

Claims (2)

, At input 15, the device is preset to the initial state. The pulses of the generator 1 of the reference frequency are fed to the input of the splitter 2 frequency, from the output of which - to the input of valve 3. By the trigger signal on input 11 or 12, which is fed to BSD 4, valve 3 opens. The frequency is fed to the counting input of the counter 5 time intervals the discharge outputs are connected to the inputs of the decoder 6, from the output combination of variables of which in block 7 a predetermined sequence of command pulses is formed given by the cyclogram of the object operation. The command pulses are fed to the installation inputs of the corresponding control triggers 8i, ... 8, which, at their outputs, form a cycling diagram. Operational restructuring of the program is carried out with the help of block 9 of the setting mode, which is an intermediate link between the outputs of the control triggers BI, ... 8 and the outputs of the device 17i, ... 17 5 The capacity of the time interval counter C-999 pulses, which determines the duration cycle operation of the device. The overflow pulse of counter 5 generates a Kill signal, which is fed to block 4, where the reset signals of counter 5 and control triggers 8i, ... 8p, the inhibit signal to valve 3 and the signal KUj are generated. In this cycle, the device ends. On the next run, the cycle is repeated. Thus, a software control device can be used for local control of technological processes in various industries. When using the proposed device, a two-way functional interconnection of the software control device with the object is possible. It provides for one-for-one change of the management program without interrupting the management process. Programming tools are easy to use and reliable in operation. Claims An inventive program control device comprising control triggers and a pulse generator connected in series. / 7 fff. 6 impulse divider, valve, time interval counter and deisfrator, characterized in that, in order to expand the functional capabilities of the device, a control driver, a command switching unit and a mode setting unit, whose inputs are connected to the first output through control switches, are inserted into it the command switching unit, the second output connected to the second valve inlet, and the third output to the second input of the counter, time intervals, the second output of which is connected to the first input of the switching unit com and, by the second inputs of the device connected to the inputs, the second inputs of the control triggers are connected to the output of the controller by the driver control shaper. Sources of information taken into account in the examination 1. USSR author's certificate number 577509, l. G 04 B 10/04, 1975. 2. USSR author's certificate N 434401, l. G 06 B 1/04, 1974.