SPRADL9 February   2025 CC1310

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Sensor Controller in Building Automation
    2. 1.2 TI Devices
      1. 1.2.1 CC13x4 Wireless MCUs
      2. 1.2.2 CC26xx Wireless MCUs
  5. 2Sensor Controller
    1. 2.1 Features
    2. 2.2 Sensor Controller Power Modes
      1. 2.2.1 Active Mode
      2. 2.2.2 Low Power Mode
      3. 2.2.3 Standby Mode
      4. 2.2.4 Switching Between Power Modes
        1. 2.2.4.1 24MHz - Startup From Standby and Return to Standby Energy
        2. 2.2.4.2 2MHz - Startup From Standby and Return to Standby Energy
    3. 2.3 Power Measurement Setup
      1. 2.3.1 EnergyTrace™ Software
      2. 2.3.2 Software
      3. 2.3.3 Current Consumption Measurements
      4. 2.3.4 Hardware
  6. 3Building Automation Use-Cases and Techniques using Sensor Controller
    1. 3.1 PIR Motion Detection
      1. 3.1.1 PIR Traditional Signal-Chain
      2. 3.1.2 Capacitor-less Motion Detection Block Diagram
      3. 3.1.3 Digital Signal Processing
        1. 3.1.3.1 Hardware
        2. 3.1.3.2 Digital Signal Processing
    2. 3.2 Glass Break Detection
      1. 3.2.1 Low-Powered and Low-Cost Glass Break Block Diagram
    3. 3.3 Door and Window Sensor
    4. 3.4 Low-Power ADC
      1. 3.4.1 Code Implementation in Sensor Controller Studio
      2. 3.4.2 Measurements
    5. 3.5 Different Sensor Readings with BOOSTXL-ULPSENSE
      1. 3.5.1 Capacitive Touch
      2. 3.5.2 Analog Light Sensor
      3. 3.5.3 Potentiometer (0 to 200kΩ range)
      4. 3.5.4 Ultra-Low Power SPI Accelerometer
      5. 3.5.5 Reed Switch
  7. 4Summary
  8. 5References

3 Building Automation Use-Cases and Techniques using Sensor Controller

The Sensor Controller provides a platform for developing energy-efficient building automation designs. The ultra-low-power operation and ability to handle real-time data collection makes the Sensor Controlled well-designed for key use cases such as PIR based motion detection, glass break detection, door and window and sensing:

  • Motion Detection - Analog, Digital PIR Sensor:

The Sensor Controller is able to periodically sample data from a PIR sensor at frequencies designed for the application, apply digital processing methods to refine the received signal and use basic algorithms (threshold based as well as other methods) to detect motion. This allows the main CPU to remain in sleep mode until motion is detected.

  • Door/Window Sensors - Reed Switch and Magnet Sensors:

The Sensor Controller is able to periodically check the reed switch's state, filter out noise or any false triggers (for example through debouncing the switch) making sure that only a legitimate event is processed. The Sensor Controller can wake up the System CPU when detection occurs while the switch operates in low-power mode during most of the routine.

  • Glass break detection - Microphone, Piezoelectric Sensor:

For glass break detection, the Sensor Controller can monitor audio or vibration signals using a microphone, or measuring pressure an external piezoelectric pressure sensor. Detection can then occur based on analyzing incoming signals for specific frequency patterns indicative of breaking glass. Additional processing can be further handled by the main processor if needed.

The following chapters demonstrate the implementation of each of these applications using the Sensor Controller with a focus on low power consumption for longer battery life.