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TIDA-00839
Magnetic Tamper Detection Using Low-Power Hall Effect Sensors Reference Design
TIDA-00839
Overview
Magnetic tampering can paralyze any transformer in an energy measurement system, which may potentially lead to the system being unable to be powered properly or unable to correctly register the energy consumed by a load. This design implements a Class 0.2 three-phase energy measurement system that detects magnetic tampering using hall sensors. Magnetic tamper detection is enabled when running from both main and backup power sources. Methods are used to reduce the current consumption of the hall sensors to increase battery life when running from the backup power source.
Features
- Bop =±6.9 mT, Sensor Brp =±3.5mT
- Support for Backup Power Sources
- Software Power Duty-Cycling Reduces Current Consumption per Sensor to < 2 µA
- Three-Phase Energy Measurement Exceeds Class 0.2 Accuracy Requirements from ANSI and IEC
- TI Energy Library Firmware Calculates All Energy Measurement Parameters Including Active and Reactive Power; Active and Reactive Energy; Root Mean Square (RMS) Current and Voltage; Power Factor; and Line Frequency
Industrial
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUB69.PDF (3284 K)
Reference design overview and verified performance test data
TIDRJ34.PDF (62 K)
Detailed schematic diagram for design layout and components
TIDRJ35A.PDF (210 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRJ37.ZIP (413 K)
Files used for 3D models or 2D drawings of IC components
TIDCBI1.ZIP (331 K)
Design file that contains information on physical board layer of design PCB
TIDRJ36.PDF (277 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430F67791A — Polyphase metering SoC with 7 Sigma-Delta ADCs, LCD, real-time clock, 512KB Flash, 32KB RAM
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Magnetic Tamper Detection Using Low-Power Hall Effect Sensors Design Guide | Jan. 07, 2015 | |
| Technical article | You can be an electromechanical engineer | PDF | HTML | Nov. 10, 2017 |
Related design resources
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REFERENCE DESIGN
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