SU1394203A1 - Temperature controller - Google Patents

Abstract

The invention relates to temperature control systems and can be used in the automation of technological processes, for example, in group welding of quartz glass resonator cylinders. The purpose of the invention is to improve the accuracy of the device. The device contains a measuring transducer 18, a counter 7, the counting input of which is connected to the first output of the programmer 2, the setup input to the output of the memory register 17, the control inputs to the outputs of the first comparator 8, the output to the first inputs of the first and second comparators 16, the second input the first comparator is connected to the second output of the programmer, the third output of which is connected to the indicator 6, and the input is connected to the starting element 1, the first input of the storage register 17 and the first input of the proportional block 9, the second input of which is connected to the output of the comparator 16, and the output through the actuating element 14 is connected to the heater 15. 1 jui. trr i. . I. . .f i SL oo CO 4 INP O CO

Description

139

The invention relates to temperature control systems and can be used to automate technological processes, e.g., 5 for group welding of quartz glass resonator cylinders.

The purpose of the invention is to improve the accuracy of the device

The drawing shows the block diagram of the device.

The device consists of a trigger element 1, a programmer 2, which includes a unit 3 for setting the rate of temperature change, a unit 4 for setting time intervals, a unit 5 for setting temperature settings for the indicator 6s of the second reversible counter 7, a first parametre 8, a block 9 for proportional transformation j 10 clock pulsesJ the first reversal counter 11, a digital analog converter 12, an amplifier 13, an actuating element 14s of the heater 15., a second co-switch 16, a storage register 17, a digital meter The converter 18, which includes the indicator 19, the storage element 20, the analog-to-digital converter 21, the amplifier 22, the sensor 23 ,.

The individual units of the device perform the following functions. Block 4 of setting time intervals generates time intervals for each of the K channels in accordance with the initial information set by the unit.

This process also synchronizes the operation of the temperature setting speed setting blocks and the temperature setting setting block. In addition, block 4, through indicator 6, induces the number of the working channel and the End cycle signal about

Decadal switches of type PP-7 can be used as setters for blocks 3-5.

The device works as follows.

Before starting work in task blocks; the rate of change of temperature 3, time intervals 4, temperature setpoints 5 manually input the initial data on the process,

When starting the trigger

1c output of the inverter 18 through the storage register 17 to the installation inputs of the counter 7 is supplied

five

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five

0

0

five

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digital signal corresponding to the initial value of the temperature of the object from which the first control of the channel should start. At the same time, the proportional conversion unit 9 starts and the programmer 25 at the first output of which a sequence of pulses appears 5 is counted by the counter 7 And the control input of the counter reversal from the first output of the first The comparator continuously sends a signal to add or subtract, depending on the difference signal, comparing the calculated temperature from the output of counter N. predetermined temperature from the output of the programming Mprog

If N

NCC, N,

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N

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- subtraction

pragr addition 5 then N „Rohrr. a ban on reading with a counter. output of comparator 8,

Thus, the S comparator 8 determines the direction of the rate of change in temperature. The rise or fall and also the temperature of the temperature at a given level.

The comparator 16 compares the current temperature value from the output of the converter 18 and the calculated temperature from the output of the counter 7 Depending on the error sign, the output of the comparator 16 is a control signal coming through the actuator 14 to the heater 15, and the current temperature value is processed

At the end of the time interval of the first channel of the program, the block for setting the time interval 2j3..j, K on channel5 occurs. The channel number is indicated by the indicator 6,. After the entire program has been processed, the End of cycle signal appears on the indicator 6.

Claims (1)

Invention Formula A temperature control device comprising a series-connected sensor but a digital measuring transducer, a trigger element 5 an actuating element connected to the output of the first reversible counter, the counting input of which is connected to the output of the clock generator, and the programmer including a timer, to the exit which is connected to the input of the setpoint of the rate of temperature change and the input of the setpoint of temperatures, characterized in that, in order to ensure accuracy, the device contains a second reversible counter, the first and second comparators and a storage register, and the output of the digital measuring converter through the storage register the records of which are associated with the trigger of the trigger element, is connected to the setup input of the second reversible counter, the counting input of which is connected to the output of the measuring rate setting unit t temperature, control unit input and input of the prohibition of the account - respectively to the first and second outputs of the first comparator, and the output - to the first input of the second first TO; INLET the first comparator, the second input of which is connected to the output of the setpoint unit, the second input of the second comparator is connected to the input of the memory register, and the output is connected to the control input of the first reversible counter, the control inputs of the timer and clock generator are connected to output trigger element.