Microchip ATA8515 Manual

Microchip Ikke kategoriseret ATA8515

Læs gratis den danske manual til Microchip ATA8515 (21 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 16 personer og har en gennemsnitlig bedømmelse på 4.6 stjerner ud af 8.5 anmeldelser. Har du et spørgsmål om Microchip ATA8515, eller vil du spørge andre brugere om produktet?

Download PDF

Side 1/21

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)

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