The role of temperature controller in the application of Chinese medicine
I. In response to the temperature requirements of the Chinese medicine extraction process, the appropriate test method design is Electric Filter Fan Cabinet Heater Fan Heater with Thermostat selected, and the temperature integrated measurement controller design is required. It requires a display and simple control function, and the temperature control accuracy is 0.5 ° C.
2. Specific requirements
1. Determine the overall plan
(1) Understand the basic principles and methods of temperature measurement and control under the extract of traditional Chinese medicine, analyze the range range required by the control device.
(2) Give the overall design plan according to temperature detection and control requirements.
2. The temperature controller is designed to be based on the previous overall solution, selects the appropriate sensor, uses a single -chip microcomputer development board, designs signal processing circuit, control circuit, actuator, and system integration.
3. Specific design process, design results verification and analysis body design process,
(1) Simple design and system integration of the basic input and output system, testing, control and display system of the measurement and control system can be simply integrated.
(2) Explain the work principle and process of the temperature measurement controller designed.
(3) A necessary analysis of the design results.
(4) Complete the design report on time. Summary of temperature measurement control device design based on traditional Chinese medicine extract: The temperature measurement and control of Chinese medicine extract, that is, automatically adjust the temperature required by the components of the Chinese medicine extraction equipment according to the needs of the Chinese medicine production process. Enter
Ring temperature measurement and control is the main guarantee for realizing the automation and scientific production of production management. Through the monitoring of each temperature point, the temperature is effectively regulated. Make each equipment meet the temperature requirements of traditional Chinese medicine extraction. Temperature control in the process of Chinese medicine extraction, it is a very good
Important links. The control accuracy directly affects the quality of the drug.
Fourth, the temperature measurement controller of Chinese medicine extract
1.1 The temperature analysis of the Chinese medicine extraction equipment In the process of extracting the Chinese medicine, the temperature of the heating water was controlled at about 80 degrees in the solution solution step. In the control solution level of the single -effect concentrator, the temperature of the medicinal solution should be controlled at about 60 degrees (aquatic solution). Distillation system
The temperature of the hydrophobic system is about 80 degrees and enters the tower. During the steam heating of the drying system, it is necessary to turn on the water system to control the boiling point temperature and control it at about 60 degrees. The temperature of the water tank during the production process should exceed 30 degrees during the production process
Add new water to cool down. The above points are the temperature control points during the extraction of the main Chinese medicine. Aiming at the temperature requirements in the traditional Chinese medicine extraction process, and combined with the on -site visit to the Chinese medicine extraction control system production line. The temperature designed in this group
The controller measures and controls the production temperature of the Chinese medicine extract. Temperature control is a very important link during the extraction of Chinese medicine. The control accuracy directly affects the quality of the drug.
1.2 In the process of extraction and purification, the effect of temperature during the extract of traditional Chinese medicine is one of the process parameters in the process parameter monitoring system. And according to the experience rules of V ’Ant HOFF: Each temperature increases by 10 degrees, the response speed increases by about 2-4 times
The temperature affecting the medicines of the drug are: hydrolysis, oxidation, transformation, degeneration, volatile. Therefore, the temperature control accuracy directly affects the quality of the medicine. In view of the above two points, this group designed a temperature controller based on Chinese medicine extraction, which should
Temperature measurement control appliances have good versatility and strong adaptability. Second, the temperature measurement and control system based on the research scheme of the traditional Chinese medicine extraction temperature measurement control system is based on the single -chip microcomputer as the core measurement and control core, based on the temperature sensor, and the production equipment is based on the traditional Chinese medicine extraction process
For temperature requirements, through real -time detection of temperature, the test parameters are automatically adjusted to automatically adjust the temperature of the equipment to produce the equipment to achieve the temperature required by the production.
2.1 The overall structure of the temperature controller is based on the purpose of the controller to obtain. The temperature controller has the following three parts:
(1) Signal acquisition input section: detection of temperature during equipment production.
(2) Signal conversion and processing section: convert the collected signal to the amount of computers recognized, and there is a computer for related processing.
(3) Output and control part: control motor.
2.2 The target of the temperature control system uses the single -chip machine AT89C52 and the two DS18B20 design digital temperature meters and a PT100 temperature check circuit, LED display. The temperature point to be measured through the temperature sensor DS18 B20 and PT100 collection
Then use the AT89C52 single -chip microcomputer to display and display it on the digital tube.
To reach a certain value, the motor stops (heating up).