Project Proposal For E-Power Home Utility Measurement System ...
Project Proposal For E-Power Home Utility Measurement System Submitted to: John Kennedy and LalTummala Design Co. Ltd., San Diego, CA
Prepared by:
Tony Galecki Ben Walpole Wesley Baker Vinh Huynh Brian Frederick Sergio Espinoza
1
Abstract: The E-Power Home Utility Measurement System will monitor and display normal everyday power usage from any home appliance via wireless applications such as a Zigbee RF transceiver. Measurement devices can be placed in multiple rooms of a home and data transmission would be routed via a mesh network. The user will also be able to log into a designated website to display the up to date power consumption as well as cost (kw/h) of any appliance plugged into a current sensing device, similar to Figure 1. The system would also give the user control of power usage within the website and the ability to disable an appliance. These features will ultimately lead to a reduction in power consumption and cost.
Project Description: In today’s growing energy efficient world, power usage is becoming a major concern. E-Power recognizes this dilemma and plans to implement a design that can give the common homeowner a tool to monitor and control a home’s power usage. The proposed design will function as a power meter using a method of current sensing in conjunction with a microcontroller. We will use a microcontroller to sample current and make an estimate of power consumption. This device will then send the sampled power consumption wirelessly via an RF transceiver to a network coordinator, which would include an embedded server. The embedded server will provide a secure web site for the user to interact with. The use of an RF transceiver (Zigbee) in the design would ensure a mesh network of nodes that can perform multiple hops, transmitting data from node to node in the event that one current sensing appliance device (node) is out of range of the network coordinator. This ensures that only the distance between nodes, not the distance to the network coordinator would be a factor. The secure website would also give the user the option to control individual appliances by means of their computer.
2
Features • Safe self-sufficient current sensing device • Zigbee RF transceiver compliant machine to machine network • Multiple devices with distance not being a factor • Netburner Embedded Server hardware and software • User friendly web application • Centrally located energy monitoring
Design Figure 1
Block Diagram:
3
Figure 2
802.15.4 IEEE Zigbee Transceiver
PIC (Microcontroller)
NetBurner MOD5270
The 802.15.4 Zigbee Transceiver is an extremely low power device with relatively little complexity. The Zigbee Network Coordinator will set up a network, manage network nodes, and secure the network, store network node information, and route messages between paired nodes. The Netburner MOD5270, which is an embedded server, will allow us to use a real time operating system that utilizes NetBurner hardware platform to control the Zigbee devices using an IP address. By running our configuration website on this device we will be able to show bar graphs containing the real time power consumption of current that our system is currently consuming. The website will also update frequently allowing real time viewing. Figure 2 above shows a general block diagram of these interconnected devices.
Testing and Verification Testing Procedures:
Figure 3 Load Current vs. Output Voltage
Voltage (mVrms)
240 Testing of our 220 200 design will be a crucial 180 factor in order to retrieve 160 140 the most accurate data as 120 100 possible. Most of the 80 testing will be done in the 60 40 lab while other sections 20 0 such as Zigbee and 0 1 2 3 4 5 6 7 Netburner can be done in AC Current various locations to ensure location flexibility. The accuracy of the current sensing device will be fundamental. The heart of the current sensing device is the Sentron CSA-1V Hall Effect sensor. The Sentron sensor detects magnetic fields caused be current moving in a conductor and outputs a voltage proportional to this magnetic field, which is
4
8
proportional to the current in the conductor. A sample test of load current vs. output voltage using the current sensor is shown in Figure 3. The output of the sensor will be sampled in software to determine the peak voltage and input into a microcontroller containing an A/D converter. This information will then be sent via Zigbee to the hub. A relay capable of handling 20 amps will be placed in line with the conductor to provide disconnect capability from the hub. A Power Stream of 120Vac-5Vdc switching power supply will be used to provide the 5Vdc necessary to power the sensor. Two voltage regulators will be used to step the 5Vdc to 3.3Vdc to provide power for the microcontroller and Zigbee. We will compare wireless output device values with lab-measured values to ensure accuracy. Data transmission will also be checked as well as mesh network hopping. Each individual section of the project will be tested separately as well as the overall system to determine operational functionality.
Benchmarks: The current design path is to assemble and test four current sensing devices. These devices will be placed in different range distances to ensure Zigbee functionality. This will be one main goal that when testing is completed would ensure that several rooms in a modest sized home would be able to communicate with the base hub. The user-friendly web application with dynamic content and the ability to control appliance usage would be a second goal to set. In order for this project to be a complete success, a typical scenario would be for a user to log into the secure website, monitor energy usage of four appliances in various locations within a home. If the user decides that one of the appliances is consuming too much power he or she would have the ability to click a button on the computer to disable the appliance. This would send a signal thru the base hub to the microcontroller in the current sensing device to switch a relay tied directly to the hot line going into the appliance, disabling it as well as the ability to turn the appliance on again.
5
Cost Analysis: The proposed budget has been divided into development expenses and the product and bill of materials expenses. Development costs are expenses related with the research and design of the product. These expenses include design hours billed at an estimated $35 per hour with a time frame of about 600 hours to complete the design. At the end of the project all design material will be returned to you as part of your company’s intellectual property. Miscellaneous costs would include the price of test equipment, adaptors, office equipment, office supplies and sundries required to provide proof of concept and proof of design. Bill of material expenses includes parts required to build the product, in this case the smart outlets and network coordinator. In this case all parts necessary have been taken into account and the logistics have been worked out to have the materials necessary delivered on time for an on-schedule time production. Finally, this budget has been worked out with the needs of potential customers in mind. By this all parts have been and will be tested and ordered according to reliability and price to make this project a cost effective one for both consumers and company alike.
6
Budget-Smart Meter Module Part Number
Description
Manufacturer
Qty.
Unit Price
Price
Actual Price
Total
Netburner
1
$99.00
$99.00
$0.00
$0.00
4
$4.95
$19.80
$4.95
$19.80
4
$2.61
$10.44
$2.61
$10.44
4 8
$0.89 $0.83
$3.56 $6.64
$0.89 $0.83
$3.56 $6.64
CSA-1V
NET BURNER DEVELOPMENT KIT SENTRON CURRENT SENSOR
HCPL-7520
ISOLATED LINEAR SENSING IC
HI2220T101R-10 LM3940 MRF24J40MAT-I/ RM
SMD FERRITE BEAD VOLTAGE REGULATOR
Sentron Avago technologies TDK National Semi.
ZIGBEE RADIOS
Microchip
2
$9.95
$19.90
$9.95
$19.90
Microchip
2
$4.98
$9.96
$4.98
$9.96
Power Stream sharp XXXX XXXX XXXX XXXX 600HRS@35 Per.
4 4 12 14 1 2
$14.50 $5.44 $0.80 $0.43 $0.03 $1.20
$58.00 $21.76 $9.60 $6.02 $0.03 $2.40
$14.50 $5.44 $0.00 $0.00 $0.00 $0.00
$58.00 $21.76 $0.00 $0.00 $0.00 $0.00
6
$21,000.00
$126,000.00
$0.00
$0.00
Build Cost:
$126,267.10
Actual Cost:
$150.06
MOD7250LC
PST-AC0520W S116S02 XXXX XXXX XXXX XXXX
40 PIN MICROCONTROLLER UNIT SWITCHING POWER SUPPLY SOLID STATE RELAY ASSORTED CAPACITORS ASSORTED RESISTORS ASSORTED DIODES ASSORTED TRANSISTORS
XXXX
ENGINEERING COSTS
PIC18F2450
7
Project Management Individual Responsibilities
~ Project Manager --- Tony Galecki ~ Parts Manager and Budget --- Sergio Espinoza ~ Chief Editor of Reports --- Brian Frederick ~ Power Point Coordinator --- Ben Walpole ~ Web Page Designer --- Vinh Huynh ~ Technical Illustrator --- Wesley Baker
8
Milestones
9
Prepared by:
Tony Galecki Ben Walpole Wesley Baker Vinh Huynh Brian Frederick Sergio Espinoza
1
Abstract: The E-Power Home Utility Measurement System will monitor and display normal everyday power usage from any home appliance via wireless applications such as a Zigbee RF transceiver. Measurement devices can be placed in multiple rooms of a home and data transmission would be routed via a mesh network. The user will also be able to log into a designated website to display the up to date power consumption as well as cost (kw/h) of any appliance plugged into a current sensing device, similar to Figure 1. The system would also give the user control of power usage within the website and the ability to disable an appliance. These features will ultimately lead to a reduction in power consumption and cost.
Project Description: In today’s growing energy efficient world, power usage is becoming a major concern. E-Power recognizes this dilemma and plans to implement a design that can give the common homeowner a tool to monitor and control a home’s power usage. The proposed design will function as a power meter using a method of current sensing in conjunction with a microcontroller. We will use a microcontroller to sample current and make an estimate of power consumption. This device will then send the sampled power consumption wirelessly via an RF transceiver to a network coordinator, which would include an embedded server. The embedded server will provide a secure web site for the user to interact with. The use of an RF transceiver (Zigbee) in the design would ensure a mesh network of nodes that can perform multiple hops, transmitting data from node to node in the event that one current sensing appliance device (node) is out of range of the network coordinator. This ensures that only the distance between nodes, not the distance to the network coordinator would be a factor. The secure website would also give the user the option to control individual appliances by means of their computer.
2
Features • Safe self-sufficient current sensing device • Zigbee RF transceiver compliant machine to machine network • Multiple devices with distance not being a factor • Netburner Embedded Server hardware and software • User friendly web application • Centrally located energy monitoring
Design Figure 1
Block Diagram:
3
Figure 2
802.15.4 IEEE Zigbee Transceiver
PIC (Microcontroller)
NetBurner MOD5270
The 802.15.4 Zigbee Transceiver is an extremely low power device with relatively little complexity. The Zigbee Network Coordinator will set up a network, manage network nodes, and secure the network, store network node information, and route messages between paired nodes. The Netburner MOD5270, which is an embedded server, will allow us to use a real time operating system that utilizes NetBurner hardware platform to control the Zigbee devices using an IP address. By running our configuration website on this device we will be able to show bar graphs containing the real time power consumption of current that our system is currently consuming. The website will also update frequently allowing real time viewing. Figure 2 above shows a general block diagram of these interconnected devices.
Testing and Verification Testing Procedures:
Figure 3 Load Current vs. Output Voltage
Voltage (mVrms)
240 Testing of our 220 200 design will be a crucial 180 factor in order to retrieve 160 140 the most accurate data as 120 100 possible. Most of the 80 testing will be done in the 60 40 lab while other sections 20 0 such as Zigbee and 0 1 2 3 4 5 6 7 Netburner can be done in AC Current various locations to ensure location flexibility. The accuracy of the current sensing device will be fundamental. The heart of the current sensing device is the Sentron CSA-1V Hall Effect sensor. The Sentron sensor detects magnetic fields caused be current moving in a conductor and outputs a voltage proportional to this magnetic field, which is
4
8
proportional to the current in the conductor. A sample test of load current vs. output voltage using the current sensor is shown in Figure 3. The output of the sensor will be sampled in software to determine the peak voltage and input into a microcontroller containing an A/D converter. This information will then be sent via Zigbee to the hub. A relay capable of handling 20 amps will be placed in line with the conductor to provide disconnect capability from the hub. A Power Stream of 120Vac-5Vdc switching power supply will be used to provide the 5Vdc necessary to power the sensor. Two voltage regulators will be used to step the 5Vdc to 3.3Vdc to provide power for the microcontroller and Zigbee. We will compare wireless output device values with lab-measured values to ensure accuracy. Data transmission will also be checked as well as mesh network hopping. Each individual section of the project will be tested separately as well as the overall system to determine operational functionality.
Benchmarks: The current design path is to assemble and test four current sensing devices. These devices will be placed in different range distances to ensure Zigbee functionality. This will be one main goal that when testing is completed would ensure that several rooms in a modest sized home would be able to communicate with the base hub. The user-friendly web application with dynamic content and the ability to control appliance usage would be a second goal to set. In order for this project to be a complete success, a typical scenario would be for a user to log into the secure website, monitor energy usage of four appliances in various locations within a home. If the user decides that one of the appliances is consuming too much power he or she would have the ability to click a button on the computer to disable the appliance. This would send a signal thru the base hub to the microcontroller in the current sensing device to switch a relay tied directly to the hot line going into the appliance, disabling it as well as the ability to turn the appliance on again.
5
Cost Analysis: The proposed budget has been divided into development expenses and the product and bill of materials expenses. Development costs are expenses related with the research and design of the product. These expenses include design hours billed at an estimated $35 per hour with a time frame of about 600 hours to complete the design. At the end of the project all design material will be returned to you as part of your company’s intellectual property. Miscellaneous costs would include the price of test equipment, adaptors, office equipment, office supplies and sundries required to provide proof of concept and proof of design. Bill of material expenses includes parts required to build the product, in this case the smart outlets and network coordinator. In this case all parts necessary have been taken into account and the logistics have been worked out to have the materials necessary delivered on time for an on-schedule time production. Finally, this budget has been worked out with the needs of potential customers in mind. By this all parts have been and will be tested and ordered according to reliability and price to make this project a cost effective one for both consumers and company alike.
6
Budget-Smart Meter Module Part Number
Description
Manufacturer
Qty.
Unit Price
Price
Actual Price
Total
Netburner
1
$99.00
$99.00
$0.00
$0.00
4
$4.95
$19.80
$4.95
$19.80
4
$2.61
$10.44
$2.61
$10.44
4 8
$0.89 $0.83
$3.56 $6.64
$0.89 $0.83
$3.56 $6.64
CSA-1V
NET BURNER DEVELOPMENT KIT SENTRON CURRENT SENSOR
HCPL-7520
ISOLATED LINEAR SENSING IC
HI2220T101R-10 LM3940 MRF24J40MAT-I/ RM
SMD FERRITE BEAD VOLTAGE REGULATOR
Sentron Avago technologies TDK National Semi.
ZIGBEE RADIOS
Microchip
2
$9.95
$19.90
$9.95
$19.90
Microchip
2
$4.98
$9.96
$4.98
$9.96
Power Stream sharp XXXX XXXX XXXX XXXX 600HRS@35 Per.
4 4 12 14 1 2
$14.50 $5.44 $0.80 $0.43 $0.03 $1.20
$58.00 $21.76 $9.60 $6.02 $0.03 $2.40
$14.50 $5.44 $0.00 $0.00 $0.00 $0.00
$58.00 $21.76 $0.00 $0.00 $0.00 $0.00
6
$21,000.00
$126,000.00
$0.00
$0.00
Build Cost:
$126,267.10
Actual Cost:
$150.06
MOD7250LC
PST-AC0520W S116S02 XXXX XXXX XXXX XXXX
40 PIN MICROCONTROLLER UNIT SWITCHING POWER SUPPLY SOLID STATE RELAY ASSORTED CAPACITORS ASSORTED RESISTORS ASSORTED DIODES ASSORTED TRANSISTORS
XXXX
ENGINEERING COSTS
PIC18F2450
7
Project Management Individual Responsibilities
~ Project Manager --- Tony Galecki ~ Parts Manager and Budget --- Sergio Espinoza ~ Chief Editor of Reports --- Brian Frederick ~ Power Point Coordinator --- Ben Walpole ~ Web Page Designer --- Vinh Huynh ~ Technical Illustrator --- Wesley Baker
8
Milestones
9
