Industrial Temperature Controller
Industrial Temperature Controller Introduction
This practical temperature controller controls the temperature of any device according to its requirement for any industrial application. It also displays the temperature on an LCD displays in the range of –55°C to +125°C. At the heart of the circuit is the microcontroller from 8051 family which controls all its functions.
The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. User-defined temperature settings are stored in a non volatile memory EEPROM through 8051 series microcontroller. Maximum and minimum temperature settings are entered to the MC through a set of switches which are stored in the EEPROM -24C02.Maximum and minimum setting are meant for allowing any hysteresis necessary. http://www.edgefxkits.com/
Industrial Temperature Controller Block Diagram
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Industrial Temperature Controller Hardware Requirements • • • • • • • • • • •
Transformer Voltage regulator Diodes Capacitor Resistors Microcontroller (AT89S52) Temperature sensor (DS1621) BC547 Relay Lamp LCD (16x2)
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Industrial Temperature Controller Software Requirements
Keil compiler Embedded C
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Industrial Temperature Controller Microcontroller (AT89S52) ďƒ˜ It is a smaller computer ďƒ˜ Has on-chip RAM, ROM, I/O ports...
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Industrial Temperature Controller Internal Structure Of A Micro Controller-AT89s52/51
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Industrial Temperature Controller Microcontroller Pin Description
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Industrial Temperature Controller Temperature Sensors Measures temperatures from -55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is -67°F to 257°F in 0.9°F increments. Temperature is read as a 9-bit value (2-bytetransfer). Wide power supply range (2.7V to 5.5V). Converts temperature to digital word in less Than 1 second. Thermostatic settings are user definable and Non volatile.
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Industrial Temperature Controller Temperature Sensors Data is read from/written via a 2-wire serial interface (open drain I/O lines). Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermal sensitive system. It is as 8-pin DIP or SO package.
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Industrial Temperature Controller Relay It is a electro magnetic switch Used to control the electrical devices Copper core magnetic flux plays main role here The relay's switch connections are usually labelled COM, NC and NO
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Industrial Temperature Controller Relay
COM = Common, always connect to this; it is the moving part of the itch. NC = Normally Closed, COM is connected to this when the relay coil is off. NO = Normally Open, COM is connected to this when the relay coil is on
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Industrial Temperature Controller BC547 Transistor The BC547 transistor is an NPN Epitaxial Silicon Transistor. The BC547 transistor is a general-purpose transistor in small plastic packages. It is used in general-purpose switching and amplification BC847/BC547 series 45 V, 100 mA NPN general-purpose transistors. Whenever base is high, then current starts flowing through base and emitter and after that only current will pass from collector to emitter
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Industrial Temperature Controller Capacitor A capacitor or condenser is a passive electronic component consisting of a pair of conductors separated by a dielectric. When a voltage potential difference exists between the conductors, an electric field is present in the dielectric. This field stores energy and produces a mechanical force between the plates. The effect is greatest between wide, flat, parallel, narrowly separated conductors.
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Industrial Temperature Controller LED Features Water Clear Lens 850nm Wavelength Forward Voltage - 1.7V A light-emitting diode (LED) is an electronic light source. LEDs are used as indicator lamps here.
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Industrial Temperature Controller LCD - Liquid Crystal Display A liquid crystal display (LCD) is a thin, flat display device. It made up of any number of colour or monochrome pixels arrayed in front of a light source or reflector. Each pixel consists of a column of liquid crystal molecules. It suspended between two transparent electrodes, and two polarizing filters, the axes of polarity of which are perpendicular to each other. Many microcontroller devices use 'smart LCD' displays to output visual information. http://www.edgefxkits.com/
Industrial Temperature Controller LCD - Liquid Crystal Display Data can be placed at any location on the LCD. For 16Ă—2 LCD, the address locations are: First line 80 81 82 83 84 85 86 through 8F Second line C0
C1 C2 C3 C4 C5 C6 through CF
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Industrial Temperature Controller Working ďƒ˜ The project uses a digital temperature sensor DS1621 the surface which is capable of sensing the temperature & delivering digital data at its output which are connected to the controller. ďƒ˜ The LCD displays the present temperature, maximum temperature and minimum temperature. The maximum and minimum values are entered through switches attached to the microcontroller. ďƒ˜ The maximum and minimum settings are stored in the EEPROM. If the temperature goes below the minimum value the heater is on as indicated by a lamp connected through a relay driven by a transistor connected to the microcontroller. If the temperature crosses the maximum value the heater is switched off. http://www.edgefxkits.com/
Industrial Temperature Controller Why Do We Need Temperature Controllers? Temperature controllers are needed in any situation requiring a given temperature be kept stable. When an object is required to be heated, cooled or both and to remain at the target temperature (set point). Regardless of the changing environment around it. There are two fundamental types of temperature control; open loop and closed loop control.
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Industrial Temperature Controller Applications This device is extensively used in the manufacturing sector, automobile company, steel and Iron Company, food processing company and medical sector etc. A basic temperature controller provides control of industrial or laboratory heating and cooling processes. To encounter the accurate level of temperature is very crucial and it becomes very necessary in the manufacturing process. Monitoring and controlling of temperature helps in maintaining the quality of the product.
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Industrial Temperature Controller Conclusion ďƒ˜ Temperature control comes in the digital version that makes the work of the user easy and can run the tool without any complication. The exact numbers can be seen on the device screen and it is very beneficial for the firm to see the accurate level of temperature available in the room. You can easily buy this device from the market or can buy it online as well.
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