4.4.1 ADE7753 This energy measurement IC is the one that will be incorporated into the monitoring system. are several features of this chip that simplify the process of analyzing this sort of data. The IC contains two ADC’s that convert the analog signal to a digital signal for proper communication with a computer interface. Also included inside this IC is an onboard digital integrator which enables direct interface with the current sensors. One of the biggest key features is SPI compatible serial interface. This allows a great way of communication between the chip and computer. These components can all be seen in Figure 12 below, which is the functional block diagram for the ADE7753 energy measurement IC. Figure : Functional Block Diagram of ADE7753 Reprinted with permission from Analog.com 4.5 Current Sensors In order to do power calculation the current is one of the few things that need to be monitored. The ADE7753 Energy Metering IC will be implemented into the design to calculate various data. One of the inputs of the ADE7753 is a current metering from a current sensor. There are several different sensors that could be used to accomplish this task however some have more advantages then others. Accuracy is a key feature that is needed when dealing with energy measurements. Another key feature is low power consumption which is always looked for in practical cases. Figure 13 below shows a comparison between the different types of current sensors. Figure : Current Sensor Comparison Reprinted with permission from Analog.com 4.5.1 Current Current shunts are resisters that have extremely known resistances. The purpose of having a very small a resistance is so that it will not have a noticeable effect on the circuit being analyzed. Since the resistance value is known, the current can be found by finding the voltage drop across the shunt. The integrator is what will actually create the conversion into a current measurement. Figure : Current Shunt Reprinted with permission from Analog.com The small resistance values used is in order to not disturb the circuit. When operating at the full rated current most current shunts are designed to have a voltage drop of
4.4.1 ADE7753 This energy measurement IC is the one that will be incorporated into the monitoring system. are several features of this chip that simplify the process of analyzing this sort of data. The IC contains two ADC’s that convert the analog signal to a digital signal for proper communication with a computer interface. Also included inside this IC is an onboard digital integrator which enables direct interface with the current sensors. One of the biggest key features is SPI compatible serial interface. This allows a great way of communication between the chip and computer. These components can all be seen in Figure 12 below, which is the functional block diagram for the ADE7753 energy measurement IC. Figure : Functional Block Diagram of ADE7753 Reprinted with permission from Analog.com 4.5 Current Sensors In order to do power calculation the current is one of the few things that need to be monitored. The ADE7753 Energy Metering IC will be implemented into the design to calculate various data. One of the inputs of the ADE7753 is a current metering from a current sensor. There are several different sensors that could be used to accomplish this task however some have more advantages then others. Accuracy is a key feature that is needed when dealing with energy measurements. Another key feature is low power consumption which is always looked for in practical cases. Figure 13 below shows a comparison between the different types of current sensors. Figure : Current Sensor Comparison Reprinted with permission from Analog.com 4.5.1 Current Current shunts are resisters that have extremely known resistances. The purpose of having a very small a resistance is so that it will not have a noticeable effect on the circuit being analyzed. Since the resistance value is known, the current can be found by finding the voltage drop across the shunt. The integrator is what will actually create the conversion into a current measurement. Figure : Current Shunt Reprinted with permission from Analog.com The small resistance values used is in order to not disturb the circuit. When operating at the full rated current most current shunts are designed to have a voltage drop of
EEL%204915%20Final%20Paper.docx