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Temperature control system for heating device

A temperature control system and heating device technology, applied in the direction of temperature control using electric methods, can solve problems such as difficult mathematical models, long adjustment time, and low control accuracy, so as to improve control quality, reduce workload and work hazards sexual effect

Inactive Publication Date: 2014-11-05
CHENGDU XINXIN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such a control object with the characteristics of nonlinearity, large hysteresis, large inertia, time-varying, and unidirectional heating, it is difficult to use mathematical methods to establish an accurate mathematical model, so it is difficult to achieve good results using traditional control theories and methods. Control effect
Its control system belongs to the first-order pure lag link, which leads to large overshoot, long adjustment time and low control accuracy of traditional control methods.

Method used

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  • Temperature control system for heating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The temperature control system of the heating device is mainly composed of a temperature sensor, a measuring circuit, an A / D converter, a controller, a D / A converter, a driving circuit and a heating device connected in sequence, and the temperature sensor and the heating device are all arranged in the Inside the device to be heated, the controller is connected with the display panel. The heating device heats the device to be heated. After the temperature sensor detects the internal temperature of the heating device, the information is sent to the A / D converter through the measurement circuit for analog-to-digital conversion. After receiving the digital signal, the controller performs analysis and processing and sends the further control signal to D. The / A converter performs digital-to-analog conversion and sends it to the drive circuit. The drive circuit sends the drive signal to the heating device to heat the device to be heated. The heating device uses a heating resis...

Embodiment 2

[0022] On the basis of Embodiment 1, this embodiment further defines that the controller is also connected with a buzzer. In the heat preservation stage, when the heating device is in a fault state, an alarm is required. Therefore, a buzzer is used in the circuit design. When a fault occurs, the buzzer sounds to remind the operator to pay attention. Other parts of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Embodiment 3

[0024] On the basis of Embodiment 1, this embodiment further defines that the controller is also connected with a timer counter. When the system is running, the timing counter needs the system to give it a signal every once in a while to clear its counter. If there is no such signal and the counter overflows, it will give the processor a reset signal to force the processor to reset, which can avoid Crash. Other parts of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

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PUM

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Abstract

The invention discloses a temperature control system for a heating device. The temperature control system is mainly composed of a temperature sensor, a measuring circuit, an A / D converter, a controller, a D / A converter, a driving circuit and the heating device, wherein the temperature sensor, the measuring circuit, the A / D converter, the controller, the D / A converter, the driving circuit and the heating device are sequentially connected. The temperature sensor and the heating device are both arranged inside a device to be heated, and the controller is connected with a display panel. Real-time temperature detection is conducted on the device to be heated, the heating mode is automatically controlled, and automation of the control mode is facilitated; meanwhile, by the adoption of a remote signal transmission mode, the system can be controlled in a high-temperature environment, the workload and the working risks of working staff are reduced, and the control quality of the heating device is improved.

Description

technical field [0001] The invention relates to the field of information control, in particular to a heating device temperature control system. Background technique [0002] With the development of science and technology and the improvement of industrial production level, electric heating furnace has been widely used in various industrial controls such as metallurgy, chemical industry, machinery, etc., and occupies a pivotal position in the national economy. For such a control object with the characteristics of nonlinearity, large hysteresis, large inertia, time-varying, and unidirectional heating, it is difficult to use mathematical methods to establish an accurate mathematical model, so it is difficult to achieve good results using traditional control theories and methods. Control effect. Its control system belongs to the first-order pure lag link, which leads to large overshoot, long adjustment time and low control precision of traditional control methods. Contents of ...

Claims

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Application Information

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IPC IPC(8): G05D23/19
Inventor 李凌
Owner CHENGDU XINXIN INFORMATION TECH