TIDUF52 December   2023 MSPM0L1303 , MSPM0L1304 , MSPM0L1305 , MSPM0L1306 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Photoelectric Smoke Detector Background – DC-Based Signal Chain
      2. 2.2.2 Modulation-Based Smoke Detection Signal Chain
      3. 2.2.3 Optical Sensing AFE Design
        1. 2.2.3.1 TIA
        2. 2.2.3.2 BPF
        3. 2.2.3.3 Demodulator and Integrator
        4. 2.2.3.4 LED Driver
      4. 2.2.4 Optical and Mechanical Design
    3. 2.3 Highlighted Products
      1. 2.3.1 MSPM0L1306
      2. 2.3.2 TLV9062S
      3. 2.3.3 TPS7A24
      4. 2.3.4 TS5A623157
      5. 2.3.5 SN74LVC1G66
      6. 2.3.6 HDC2010
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Power
      2. 3.1.2 Communication Interface
      3. 3.1.3 Headers
    2. 3.2 Software Requirements
      1. 3.2.1 Getting Started Firmware
      2. 3.2.2 Measurements and Smoke Detection
      3. 3.2.3 Additional Demonstration Functionality
      4. 3.2.4 Smoke Detector GUI
    3. 3.3 Test Setup
      1. 3.3.1 UL217 Smoke Box and Fire Testing Setup
      2. 3.3.2 Ambient Light Testing Setup
      3. 3.3.3 Air-Quality Sensing Test Setup
    4. 3.4 Test Results
      1. 3.4.1 UL217 Testing Results
      2. 3.4.2 Ambient Light Testing Results
      3. 3.4.3 Air-Quality Sensing Test Results
      4. 3.4.4 Power Testing Results
      5. 3.4.5 Fire Room Smoke Testing
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 CAD Files
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

3.4.5 Fire Room Smoke Testing

This section shows the plots of the transient recordings from the UL Fire Room tests for both the SASI smoke detection module and the optical obscuration reference meter. These plots demonstrate the successful smoke detection against various smoke types as well as the no false alarm result from the cooking nuisance source.

The raw response from the Blue and IR LED measurements are presented as a current transfer ratio (CTR). This measurement is the received photodiode current divided by the corresponding LED current. The ratio of the Blue and IR responses is also plotted to illustrate the usefulness to help distinguish various fire types. The reference measurement for the smoke data is captured by the reference meter and is given in units of obscuration rate (% / foot).

Figure 3-20 shows the transient plot of the Go-No-Go Flaming Polyurethane test, which includes both the Cooking Nuisance source (beginning of test up to 1.5 %/ft obscuration) and the Flaming Polyurethane source (ignited as the cooking nuisance source is turned off at the 1.5%/ft time). Figure 3-21 shows the transient plot for the Wood Fire test. Figure 3-22 shows the transient plot for the Paper Fire test. Figure 3-23 shows the transient plot for the Smoldering Smoke test. Figure 3-24 shows the transient plot for the Smoldering Polyurethane test.

GUID-20231101-SS0I-FZQW-7GHK-3CHWNFV8T2GQ-low.png Figure 3-20 Transient Waveform of SASI Module at North Ceiling Location, Go-No-Go Nuisance With Flaming Polyurethane Foam Test (UL217 9th ed. Test 54)
GUID-20231101-SS0I-V2TR-CSGV-NQJ68S0JXXQB-low.png Figure 3-21 Transient Waveform of SASI Module at North Ceiling Location, Wood Fire Test (UL217 9th ed. Test 50.3)
GUID-20231101-SS0I-NNMG-Q0DL-JZLJNCHMWKVX-low.png Figure 3-22 Transient Waveform of SASI Module at North Ceiling Location, Paper Fire Test (UL217 9th ed. Test 50.2)
GUID-20231101-SS0I-LNHW-0Q78-KF7F7WG7DBG2-low.png Figure 3-23 Transient Waveform of SASI Module at North Ceiling Location, Smoldering Smoke Test (UL217 9th ed., Test 51)
GUID-20231101-SS0I-JC00-NDV1-VW5DJ0C88FK7-low.png Figure 3-24 Transient Waveform of SASI Module at North Ceiling Location, Smoldering Polyurethane Foam Test (UL217 9th ed., Test 52)