"Industrial Load Management System Using MQTT Protocol for Real-Time Energy Optimization ", Thesis of Industrial management

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| _ 230V AC.can be controlled with 8-bit parallel communication. 930V AC can be controlled with TT Lbascd serial communication. Connections y3; (AC IN) 230V AC input. 14: (LOAD OUT) controlled AC output voltage. HW: PINT +5V DC PIN2 - Gnd. PIN 3- -PIN 9-8 BIT DATA DO — D7 PINIO-— TX PINI] —RX J2: Not used How to use * Give 230V AC input to (J3) and connect load to (4). . Connect +5v DC input and Ground to (J}). There are two types of communication available. They are, * Serial communication + Parallel] communication | For serial communication The Table 3.5 shows the respective output voltage for the given serial data. Table 3.5 Serial communication for dimmer Serial data in hex Output voltage in % 00 0 3F 25 TF 50 | & FF 100 25 ror parallel communication e Connect 8 pin key pad to 8-bit data input (D0-D7) (J1). ¢ Higher priority is given to the parallel communication, ic. Key pad inputs. So, if any onc bit from D0-D7 goes high (1) the parallel communication takes place and serial communication will gct disabled. The input bits D0-D7 should be low (0) to enable serial communication. DO is LSB bit and D7 is MSB bit. For a particular binary data will get respective AC output voltage.Here we are using Parallel Communication for the data transfer because parallel communication is only possible with this IC. The board can be used inapplications where dimming of 110-220V AC power is required like dimming of bulb or fan. The board can be control with a data from any microcontroller 0-100% dimming or ON/OFF control as shown in Table 3.6. Consider, 230V AC = 100%. Table 3.6 Parallel communication of dimmer 8 Bit Binary data Output input voltage in % D7 | D6 | DS | D4 | D3 |D2 | DI| DO 0 0 0 0 Oo | 0 0 0 0 0 0 | 1 1} 1 1 ] 25 0 I 1 ! ] 1 1 1 1 100 3.2.5 Liquid crystal display LCD (liquid crystal display) is the technology used for displays in notebook and other smaller computers. Like light-emitting diode (LED) and gas-plasma technologies, LCDs allow displays to be much thinner than cathode ray tube (CRT) 26