Digital signal processing (DSP) is the analysis and manipulation of measurement values captured by sensors as digital signals. In construction, DSP is used for monitoring structures, acoustics, climate and building services.
What does digital signal processing do?
A sensor (accelerometer, microphone, strain gauge, temperature sensor) provides raw measurement values. DSP software:
- Filters out noise
- Detects patterns such as vibrations or peaks
- Compares values with limits or historical data
- Triggers alarms on exceedance
- Stores data for later analysis
Applications in construction
Structural monitoring
- Vibration measurements during piling and demolition, to prevent damage to surrounding buildings
- Crack monitoring with linear sensors along cracks in masonry
- Inclinometers in sheet pile and diaphragm walls for deformation detection
- Bridge monitoring with strain gauges read in real time
Acoustics
- Sound measurements for airborne and impact sound insulation
- Reverberation time measurements in concert halls and theatres
- Filtering of background noise in nuisance investigations
Indoor climate and services
- CO₂, temperature and RH sensors for ventilation control
- Smart meter data for optimisation of electricity and heat consumption
- Leak detection through pressure differences in pipe networks
Smart home and building management
- Movement and presence detection for lighting and HVAC
- Voice-controlled systems with DSP for noise suppression
- Predictive maintenance based on vibration patterns of motors
Benefits
- Continuous insight into the condition of a building
- Early detection of problems
- Objective data supporting building claims
- Lower maintenance costs through predictive maintenance
- Higher safety for construction projects next to existing buildings
Application
DSP is increasingly used for infrastructure projects, for buildings in settlement-sensitive areas and for heritage where vibrations can cause damage. Specialist firms supply the hardware and analysis software. Increasingly the data is integrated into a digital building model (BIM) for an overall view.
Related terms
- BIM
- Smart home
- Geomonitoring
- Building acoustics
- Digitalisation
Want to learn more about construction terms? Visit our knowledge base at fredsdiyplans.com.