Microchip ATA8515 Bedienungsanleitung
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ATA8515
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AN3857
Social Distancing with UHF and UWB Devices Application
Note
Introduction
This application note describes a Social Distancing (SD) application to measure and track distances between SD
devices (up to five) using Microchip's UHF and UWB technologies. These technologies offer low-power solutions for
longer battery life. The purpose of this application is to raise an alarm if the distance falls below a threshold value for
a predefined time.
Features
• ATA8510 UHF Transceiver for Communication to Other Devices at 433 MHz or 868 MHz
• ATA8350 Ultra-Wide-Band (UWB) Transceiver for Distance Measurement at 7 GHz
• AIS2DW12 Motion Sensor for Movement Detection
• ATtiny3217 Host MCU for Application Control
• Supports Tracking Up to Four Other Devices within 3m x 3m Area
• Generates an Alarm by LED Flashing and Buzzer when the Distance Between Two Devices is Less than 1.5m
or 2m for More than 5 Seconds
• Optional Saving of Contact IDs in Serial Flash Device (SST25PF040C)
• Operates with a LIR2540 or CR2540 Coin Cell Battery for More than a Week
• Optional USB Li-Ion Charger (MIC79110) for Li-Ion or Li-Po Accumulator with 3V Regulator (MIC5306) instead
of Coin Cell
MICROCHIP CONFIDENTIAL
FOR RELEASE ONLY UNDER NON-DISCLOSURE
AGREEMENT (NDA)
© 2021 Microchip Technology Inc. Application Note DS00003857A-page 1
Table of Contents
Introduction.....................................................................................................................................................1
Features......................................................................................................................................................... 1
1. Quick References....................................................................................................................................3
1.1. Reference Documentation............................................................................................................3
1.2. Hardware Prerequisites................................................................................................................3
1.3. Acronyms/Abbreviations...............................................................................................................3
2. Overview................................................................................................................................................. 4
2.1. General Flow................................................................................................................................5
2.2. Application Flow........................................................................................................................... 5
3. Social Distancing States......................................................................................................................... 7
3.1. Unconnected State.......................................................................................................................7
3.2. Connected State...........................................................................................................................9
3.3. Search State...............................................................................................................................11
3.4. Alarm State.................................................................................................................................12
4. RF Parameters......................................................................................................................................13
5. Prototype and Demo Kit for Social Distancing ..................................................................................... 14
6. Prototype Implementation..................................................................................................................... 15
6.1. Data Processing.........................................................................................................................15
6.2. UHF Polling Configuration .........................................................................................................15
6.3. Fast ADV_RX Mode...................................................................................................................15
6.4. Status Output ............................................................................................................................ 15
6.5. Exception Handling and Debug Output...................................................................................... 16
7. Prototype Measurement Example.........................................................................................................17
8. Document Revision History...................................................................................................................19
The Microchip Website.................................................................................................................................20
Product Change Notification Service............................................................................................................20
Customer Support........................................................................................................................................ 20
Microchip Devices Code Protection Feature................................................................................................ 20
Legal Notice................................................................................................................................................. 21
Trademarks.................................................................................................................................................. 21
Quality Management System....................................................................................................................... 22
Worldwide Sales and Service.......................................................................................................................23
AN3857
© 2021 Microchip Technology Inc. Application Note DS00003857A-page 2
Microchip Confidential: For Release Only Under Non-Disclosure Agreement (NDA)
1. Quick References
1.1 Reference Documentation
For further details, refer to the following:
•ATA8510/ATA8515 UHF ASK/FSK Transceiver Datasheet ( )9315G
•ATA8350 UWB Transceiver Datasheet (DS70005395)
•ATtiny3216/3217 tinyAVR® 1-series Datasheet ( )DS40002205
•AIS2DW12 Datasheet
•MIC2203 Buck Regulator Datasheet
•MIC5306 Linear Regulator Datasheet
•MIC79110 Linear Li-Ion Charger Datasheet
•SST25PF040C Serial Flash Datasheet
1.2 Hardware Prerequisites
• ATA8510 UHF transceiver for the communication between SD devices
• ATA8350 UWB transceiver for distance measurement between two connected SD devices
• AIS2DW12 motion sensor for movement detection
• ATtiny3217 host MCU for application control
• MIC2203, MIC5306 power regulators
• MIC79110 Li-Ion USB charger device
• SST25PF040C serial Flash for ID data storing
1.3 Acronyms/Abbreviations
Table 1-1. Acronyms/Abbreviations
Acronyms/Abbreviations Description
LED Light Emission Diode
PR Prover
MCU Microcontroller Unit
PCB Printed Circuit Board
SD Social Distancing
ToF Time-of-Flight
TRPA Transparent Raw Data Output Path A
UHF Ultra High Frequency
VR Verifier
UWB Ultra-wideband
AN3857
Quick References
© 2021 Microchip Technology Inc. Application Note DS00003857A-page 3
Microchip Confidential: For Release Only Under Non-Disclosure Agreement (NDA)
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | ATA8515 |
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