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Polyphase Current Measurement with Isolated Shunt Sensors: Implementing isolated shunt sensors using metrology AFEs and external isolators—MSP430i2041-MSP432 Communication

Date:
May 7, 2018

Duration:
06:27
This module discusses the process used by the MSP430i2041 to calculate metrology parameters.

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Detecting magnetic tampering using hall-effect sensors: TIDA-00839 Magnetic Tamper Detection Reference Design Features

Date:
April 12, 2017

Duration:
07:42
This module covers how to the use hall sensors, such as the DRV5033, for the low-power detection of strong magnetic fields in three dimensions.

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Detecting magnetic tampering using hall-effect sensors: Magnetic Tamper Detection Testing

Date:
April 12, 2017

Duration:
06:00
This module discusses magnetic tampering tests that were performed on the TIDA-00839 reference design using the DRV5033 to detect magnetic tampering in e-meters

Anti-tamper Techniques to Thwart Attacks on Smart Meters—Detecting case tamper attacks using inductive switches: Case Tamper Detection Implementations

Date:
April 12, 2017

Duration:
07:10
This module discusses the common mechanical implementation for case tamper detection and a new way to detect case openings using inductive switches
Ultrasonic water meters have improved accuracy and precision to detect the smallest leaks to reduce water waste.

Ultrasonic Sensing for More Accurate and Precise Water Flow Meters

Ultrasonic sensing techniques have been popular in smart water meters because the technology avoids any moving parts which are prone to degrade over the lifetime of the product. The MSP430FR6047 microcontroller (MCU) family takes ultrasonic sensing solutions to next level of performance delivering <25ps of accuracy, detection of low flow rates <1 liter/hour and high precision of <5ps.

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Hardening a meter against magnetic tamper attacks: Cap-Drop Based High-Side Power Supplies

Date:
April 12, 2017

Duration:
05:35
This module covers the advantages and disadvantages of using a cap drop power supply to power the high-side of the AMC1304

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Hardening a meter against magnetic tamper attacks: Isolated Shunt Sensing Building Blocks

Date:
April 12, 2017

Duration:
06:00
This module explains different measurement building blocks that could be used to implement isolated shunt current sensors for poly-phase systems.

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Hardening a meter against magnetic tamper attacks: Transformer Based High-Side Power Supplies

Date:
April 12, 2017

Duration:
03:12
This module covers the advantages and disadvantages of using a transformer-based power supply to power the high-side of the AMC1304

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Summary

Date:
April 12, 2017

Duration:
01:00
In this short module, a summary of the entire “Anti-tamper Techniques to Thwart Attacks on Smart Meters” training series will be covered.

Digital Power Supply Design Workshop

When: 
March 3, 2020 9:00 am in Garching, Germany
Laboratory based digital power supply design workshop providing design engineers an in-depth look at the design of modern, robust switch mode power supplies.

Detecting magnetic tampering using hall-effect sensors

For anti-tampering, it is common to try to detect the presence of a strong magnet. In this section, we will cover the use of hall sensors for low-power detection of strong magnetic fields in three dimensions.  Details on our magnetic tamper detection reference design, TIDA-00839, will be provided as well as some of the design considerations that were kept in mind when creating this reference design.  

Hardening a meter against magnetic tamper attacks

In this section, we will cover how to harden a meter against these magnetic tamper attacks by using shunts for current sensors. For poly-phase implementations, I will go over how to use isolated delta sigma modulators to add the necessary isolation to use shunt current sensors and create magnetically immune poly-phase energy measurement systems. The TIDA-00601 and TIDA-01094 reference designs, which show how to implement a poly-phase isolated shunt measurement system, will be discussed as well as the associated AMC1304 high-side power supplies used in these designs.

Digital temperature sensing with TMP116

Date:
April 8, 2018

Duration:
06:34
In this video we will discuss how a digital temperature sensor with built-in calibration data memory can replace PT sensors in a -55 to 125ºC temperature range.

Polyphase current measurement with isolated shunt sensors: Introduction—Why isolation is necessary for using shunts in poly-phase systems

Date:
May 7, 2018

Duration:
04:31
This module covers why isolation is necessary for using shunts in poly-phase systems.

Differential Temperature Measurement sub-system reference design

TIDA-01526 implements a high-precision Differential Temperature Measurement (DTM) subsystem using a 24-bit, low-power, Delta-Sigma ADC. Heat and cold meter DTM subsystems typically use two 2- or 4-wire RTDs such as PT100, PT500 or PT1000 and can achieve measurement accuracy of 20 mK over a water temperature range of 3°C to 180°C. The MSP430FR6047 application MCU converts the resistance value into a temperature reading in TIDA-01526.

Precision temperature measurement in heat and cold meters

PT100/500/1000 Resistance Temperature Detectors (RTDs) are widely used in grid infrastructure and factory automation applications where high precision temperature measurement is often required. Technical requirements include either 20 mK precise Differential Temperature Measurement (DTM) for heat and cold meters from 0 to 180°C or better than 400 mK precision over the full range of -200 to 850°C for industrial sensor transmitters.

Overview of temperature measurement in heat meters

This section introduces the heat and cold meter training series. The series covers the basics of RTD sensors and their usage in heat and cold meters, as defined in the EN1434 set of standards.

Measuring RTD sensors with Delta-Sigma ADS1220 family

ADS1220 Delta-Sigma family uses the ratiometric approach for measuring RTD sensors with the built-in current excitation source. Offset and gain calibration are required before the resistance measurement is converted into a temperature reading by the application MCU.

Digital temperature sensor replacement of RTD sensors with TMP116

The TMP116 digital precision temperature sensor for the -55 to +125ºC range achieves higher accuracy than the Class AA PT sensor with a 1-point calibration. A small PCB including TI's TPD1E10B06 or TPD1E04U04 protection devices can be sealed into a RTD metal tube and meet the EN 61000-4-2 and -4-4 levels of ESD protection. The 64-bit internal EEPROM inside TMP116 stores user defined calibration data into the digital temperature sensor, simplifying integration with application MCUs, such as MSP430FR6047, FR6989 or CC13xx/26xx wireless MCU families.

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