Compaction Meter

The compaction meter is an integrated measurement component of a vibratory roller that continuously monitors the compaction process by analyzing vibration frequency, amplitude, and ground response. It provides real-time feedback to the operator about the density and stiffness of the material being compacted, ensuring quality control and preventing over-compaction or under-compaction. The device is typically mounted on the roller's drum or frame and uses accelerometers and sensors to capture vibration data. The meter calculates a compaction value or percentage based on the harmonic response and frequency changes, which is displayed on an operator interface. This allows the operator to adjust the roller's speed, vibration settings, or number of passes to achieve the desired compaction. The compaction meter is designed for use in road construction, earthworks, and asphalt paving applications. It is constructed with a powder-coated aluminum alloy housing (AlSi12) and includes stainless steel and electronic components. The device operates within a temperature range of -20 to 60 °C and can be stored at -40 to 85 °C. It requires a supply voltage of 9–36 V DC and consumes no more than 5 W. The ingress protection rating is IP65–IP67, making it dust-tight and protected against water jets. It is resistant to vibration (5 g sinusoidal, 10–500 Hz) and shock (50 g half-sine, 11 ms) according to IEC standards. The measurement range is 0–100% relative compaction degree with an accuracy of ±0.5% full scale and a display resolution of 0.1%. The weight varies from 1.5 to 2.5 kg depending on configuration. All specifications are reference values and must be verified with the legal manufacturer or supplier for the specific model and application.

The compaction meter typically uses accelerometers and sensors to measure the vibratory roller's drum vibration characteristics and the ground's response. By analyzing the harmonic response and frequency changes during compaction, it calculates the material's stiffness and density, displaying the results as a compaction value or percentage on an operator interface. The device continuously monitors the vibration signals and processes them to provide real-time feedback, enabling the operator to optimize the compaction process.