SU708307A1 - Programme-control device - Google Patents

Description

(54) SOFTWARE CONTROL DEVICE

I

The invention relates to the field of automation and can be used in automatic control systems with a programmable variable parameter setting.

A software device for automatic control systems is known, comprising a reversible counter, a controlled frequency divider, a memory block, a program register, a time counter specifying and output blocks of the frequency synthesizer 1. The known device has insufficiently wide functional and operational capabilities and is relatively complex, since To set the level of the controlled parameter, a time counter device is necessary and there is no possibility of visual observation of the process taking place.

The closest in technical essence of the present invention is a device for software control, comprising a program set block, an output block and a pulse shaper connected via a controlled frequency divider to an output block 2. A disadvantage of the known device is the limited functionality and operational capabilities, the inability interfacing with discrete devices. I enter the program and the lack of the possibility of visual observation of the processes and modes of p device works.

The goal was invented by I - expanding the functionality of the device.

This goal is achieved by the fact that in a known device a register, a comparison unit and a cross-connect unit are entered, the second output of the controlled frequency divider is connected to the corresponding inputs of the comparison unit and the cross-linking unit, the output of the comparison unit is connected to the input of the program set block, the output of which is connected to the input register, the first output of which is connected to the second input of the controlled frequency divider, the second output - to the second input of the comparison unit, and the third output - to the input of the output unit, the first, second and third outputs gistra connected to the input block cross.

The implementation of the device in accordance with the claims will allow to expand

functional and operational capabilities of the device.

The drawing shows the scheme of the proposed device, comprising a pulse shaper 1, a control frequency divider 2, an output unit 3, a comparison unit 4, a program set block 5, a register 6 and a cross-connect unit 7.

The operation of the device can be carried out both automatically and manually.

Consider the operation of the device in automatic mode. In block 5, a punched tape is laid, where information of the nth number of program steps is pre-printed. Each stage contains information about the speed of the controlled parameter, the level of the adjustable parameter, and the indication of the adjustable parameter (i.e., the level is greater or less). When the Start button is pressed, the device is reset to the initial position and the first step of the program information is entered from block 5 into the register 6. The information is received in a sequential code. After entering the sign of the operation mode, the divider 2 begins to output speed control signals, which enter block 3. At the same time, from the output of divider 2, the input of block 4 receives information on the current time value in the binary sixth code. The second input of block 4 from the output of register 6 receives level information also in a binary-hexadecimal code. Thus, at this stage of the program, for example, the bioproduct is cooled at a given speed.

After comparing the current time code with the level task code in block 4, the program switches to the second step of the program. The signal from the output of the comparison circuit 4 goes to block 5 and carries out the movement of the punched tape and the second stage information in the sequential code goes to register 6. The work at this stage will continue until the codes in block 4 are compared, then the next stage will be switched to and so on. The information coming from the output of register 6 to the input of block 3 is controlled by switching the level sign of the variable parameter. Block 7 receives information for indication. The information of the current time value is fed to one input of block 7, the information of the value of the velocity of the controlled parameter is fed to the other input, the information about the value of

the level of the controlled parameter and the fourth input are indications of the mode of operation.

The device has the ability to work in manual mode. In this case, the operator dials into the manual program on block 5 and enters it into register 6. In the course of work, it is possible for the researcher to visually observe the processes taking place - the level of the controlled parameter, the current time value and the sign of the operation mode (cooling or warming up). To do this, it is enough to connect the output of block 7 to the display circuit.

The effect of the proposed invention is that the implementation of the speed and the level of the controlled parameter is carried out by a single circuit - controlled by a frequency divider, the controlled frequency divider provides information of the time value in digital form, the operational capabilities of the device are expanded by introducing a crossover unit, the output of which can be connected to the circuit indication, it is possible to interface with readers of punched tape.

Claims (2)

1. USSR author's certificate number 315160, cl. G 05 19/04, 1970. 2. USSR author's certificate No. 463100, cl. G 05 19/04, 1972 (prototype).