Heat Cost Allocator with wM-Bus at 868 MHz Reference Design

(ACTIVE) TIDA-00838

Description & Features

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Key Document

Description

The TIDA-00838 reference design implements a heat cost allocator system following the EN834 standard with the “two-sensor measurement method". The solution achieves better than 0.5 degrees Celsius accuracy across a range of +20 to +85°C. Two analog temperature sensors are available as matched pairs to eliminate the need for calibration during manufacturing and lowering OEM system cost. Wireless MCU offers wM-Bus support for S-, T- and C-modes (Meter device) at 868MHz and controls the two temperature sensors.

Features
  • Highly accurate temperature sensing across environment conditions: better than 0.5 degrees from +20 to +85°C.
  • CC1310 SimpleLink(TM) Wireless MCU provides single-chip solution for heat measurement and RF communications
  • Sensor Controller interfaces seamlessly to two matched LMT70A, which eliminate the need for calibration during manufacturing and lower OEM system cost
  • Example source code for wM-Bus @868 MHz transmission for S, T and C-modes (“Meter” device) under TI RTOS
  • Cost-optimized 2-layer PCB in HCA form factor and a 96-segments 4-MUX LCD
  • Cap Touch button on the PCB for LCD on/off

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Schematic/Block Diagram

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Design Files

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Bill of Materials (BOM)

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC1310  SimpleLink Sub-1 GHz Ultra-Low Power Wireless Microcontroller  SimpleLink Solutions  Sample & Buy View Design Kits & Evaluation Modules
LMT70A  ±0.1°C Matching Accuracy Precision Analog Temperature Sensor  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR4133  16 MHz Ultra-Low-Power Microcontroller with 16 KB FRAM, 2 KB SRAM, 60 IO, 10-bit ADC, LCD, IR Logic  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC1310 Download Download
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MSP430FR4133 Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Application notes (1)
Title Abstract Type Size (KB) Date Views
PDF 1196 22 Dec 2017 123
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1785 21 Jan 2016 63
White papers (1)
Title Abstract Type Size (KB) Date Views
PDF 728 11 May 2017 533
Design files (7)
Title Abstract Type Size (KB) Date Views
ZIP 587 15 Dec 2015 6
ZIP 983 15 Dec 2015 12
PDF 2218 15 Dec 2015 4
PDF 1670 15 Dec 2015 4
PDF 224 15 Dec 2015 3
PDF 98 15 Dec 2015 15
PDF 476 15 Dec 2015 59
Related Tools & Software

Reference Designs  ( 2 )

Software (2)

Name Part Number Software Type
Wireless M-Bus Protocol Software  WMBUS  Application Software & Frameworks 


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