SLAAEF6
September 2023
MSPM0L1105
,
MSPM0L1106
,
MSPM0L1306
,
MSPM0L1344
,
MSPM0L1345
,
MSPM0L1346
1
Abstract
Trademarks
1
PIR Design Description
1.1
PIR Sensor
1.2
PIR Signal Chain
1.2.1
Traditional Motion Detection Signal Chain Design
1.2.2
Capacitor-Free Signal Chain Design
2
Hardware and Schematic
2.1
MSPM0L1306
2.2
MSPM0 PIR Boosterpack
2.2.1
Schematic
3
Software
3.1
Software Architecture
3.2
Software Flow Chart
3.3
Data Processing
3.3.1
Digital Signal Conditioning
3.3.2
Low-Pass Filter for Temperature Drift
3.3.3
Spikes and Noise
3.3.4
Motion Detection Function
4
Results
4.1
Power Profile and Current Consumption
4.2
Detection Performance
4.2.1
Distance: 5 meters (16.4 ft)
4.2.2
Distance: 9 meters (29.5 ft)
4.2.3
Distance: 10 meters (32.8 ft)
5
Summary
6
References
1
PIR Design Description