SU1695277A1 - Device for program temperature control - Google Patents

Abstract

The invention relates to an automatic control technique and can be used for programmed control of the temperature regime of technological processes. The purpose of the invention is to increase the reliability of the device. The device contains a starting element 1, a quartz oscillator 2 pulses, an AND 3 logic element, a programmable divider 4 frequencies, a switch 5 on logic elements, a reversible counter 6, a temperature setting speed setting device 11, a digital comparator 9, a temperature setting setting unit 10, a direction control unit 20 accounts, trigger 19, logic element OR 17, address shifting register 18, digital-analog converter 12, temperature sensor 14, subtractive element 13, actuating element 15, heater 16, block 7 approximate and the characteristics of the temperature sensor. The device regulates the temperature regimes of the processes — no to a predetermined program, including areas of heating, cooling and temperature stabilization, as well as an automatic start of program control from the moment the object reaches a predetermined temperature Tnach, which increases the service life of the device. 2 Il.

Description

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Claims (1)

Claim A device for programmatically controlling the temperature, comprising a pulse generator and a starting element, connected by outputs to the inputs of the element And, to the output of which are connected in series a programmable frequency divider, an installation input connected to the output of the setpoint for the rate of change of temperature, and a zpproxy block Ации temperature sensor characteristics, the output connected to the installation input of the reversible counter, series-connected switch kdov, a digital-to-analog converter, a subtracting element with a temperature sensor at the second input, an actuator and a heater, as well as a digital comparator connected by the corresponding inputs to the outputs of the reversible counter and! temperature setpoint controller associated with the information inputs of the code switch, and an address shift register connected by the corresponding outputs to the control inputs of the start-up element and code switch and to the address inputs of the speed controllers of the temperature and temperature settings, which differs in that, with In order to increase the reliability of the device, it contains a switch, a memory trigger and an OR element connected in series, as well as a control unit for counting the direction of the reversible counter, located at the corresponding input of the latter and containing the 2I-NOT element, two 2I-5 elements and the OR-NOT element, the output of which is the output of the unit, the inputs are connected to the outputs of the 2I elements, some inputs of which are connected to the output of the 2I-NOT element, and the other inputs to the corresponding inputs 10 connected to the corresponding outputs of the address shift register, and the counting input of the reverse counter through a switch connected by the control input to the corresponding 15 output of the address shift register connected to the outputs of the element And and programmable frequency divider, the input of the memory trigger and the second input of the OR element are connected respectively with 20 outputs of the subtracting element and the digital comparator. about