Device and method for graphite electric hot plate temperature control

A temperature control device and control method technology, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problems of limited temperature measurement range, inaccurate temperature measurement, simple temperature control algorithm, etc., to achieve temperature control Short balance time, improved service life, and accurate temperature control

Inactive Publication Date: 2013-11-27
长沙思强自动化科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the graphite electric heating plates currently on the market use ordinary temperature controllers, which have defects such as inaccurate t

Method used

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  • Device and method for graphite electric hot plate temperature control
  • Device and method for graphite electric hot plate temperature control
  • Device and method for graphite electric hot plate temperature control

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Embodiment Construction

[0027] Depend on figure 1 It can be seen that the present invention is composed of a main controller module, a temperature acquisition module, a temperature control module, a button module, a display module, an alarm module, and a power supply module. The main controller module adopts the enhanced C8051F410 chip as the controller, and performs the functions of temperature acquisition, temperature control, key setting, temperature information display and alarm.

[0028] figure 2 It is the schematic diagram of the circuit of the main controller module of the present invention, in which the C8051F410 chip is a single-chip microcomputer; R22 and C12 form a reset circuit, and the RESET reset signal is connected to the second pin of the C8051F410 chip; FM24C02 is a memory chip, and SCL and SDA are signal lines, respectively Connect the 20th and 19th pins of C8051F410, FM24C02 and R41, R42 and C15 form the storage unit of the main controller to realize the storage of setting inform...

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Abstract

The invention relates to a device and method for graphite electric hot plate temperature control. A master controller module is respectively connected with a temperature collecting module, a temperature control module, a key module, a display module, a warning module and a power module. The power module is further connected with the temperature collecting module, the temperature control module, the key module, the display module and the warning module. The temperature collecting module comprises an anti-interference auxiliary circuit which offers stable supply voltage and reference voltage to a temperature measuring signal adjusting amplifying chip. Two power sources are designed for the power module and the power module offers power to the temperature control module and other modules. On the basis of the PWM technology, the sectional type digital PID algorithm and the integral saturation resistant PID algorithm are adopted so that the temperature control over a graphite electric hot plate can be achieved; a relay is prevented from being frequently turned on and turned off according to the sectional type digital PID algorithm, so that the service life of the relay is prolonged; damage caused by integral saturation is overcome through the integral saturation resistant PID algorithm, so that the temperature control balance time is shortened.

Description

technical field [0001] The invention relates to the field of automatic control of instruments and equipment, and in particular provides a temperature control device and a control method for a graphite electric heating plate. Background technique [0002] There are various electric heating plates for laboratory use, among which graphite electric heating plates are the most popular among consumers. The graphite electric heating plate has a panel made of high-purity graphite material resistant to acid, alkali and high temperature, which is specially tailored for the laboratory; it has a large heating area and can process multiple samples at the same time; the temperature of each heating point is uniform; the heating speed is fast; durable, As industrially used for heating, it also has the characteristics of long continuous working time and can work continuously for more than 48 hours. However, the graphite electric heating plates currently on the market use ordinary temperatur...

Claims

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Application Information

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IPC IPC(8): G05D23/22
Inventor 喻红超刘裕凌张敬沈樊惠
Owner 长沙思强自动化科技有限公司
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