DSP vehicle-mounted compaction real-time detection system

Introduction

With the advancement of road construction technology, the requirements for compaction degree are increasing. Traditional methods of measuring compaction are time-consuming, labor-intensive, prone to large errors, and low efficiency. To address these issues, this paper proposes a design scheme for a vehicle-mounted real-time compaction degree detection system based on DSP (Digital Signal Processor). This system achieves real-time and accurate detection of the compaction degree by monitoring and processing signals generated during the compaction process in real-time, thereby improving the quality and efficiency of road construction.

System Overview

The vehicle-mounted real-time compaction degree detection system based on DSP primarily comprises a signal acquisition module, DSP processing module, data display and storage module, and power management module. The system acquires signals such as vibration and sound generated during the compaction process through the signal acquisition module. These signals are then processed and analyzed in real-time by the DSP processing module to obtain real-time data on the compaction degree. The data is displayed and stored via the data display and storage module, while the power management module provides a stable power supply for the entire system.

Hardware Design

Signal Acquisition Module

The signal acquisition module is the core of the system, responsible for capturing various signals generated during the compaction process. Different types of sensors, such as accelerometers and sound sensors, can be selected to capture signals based on actual needs. These sensors convert the captured signals into electrical signals, which are then digitized by an Analog-to-Digital Converter (ADC) and transmitted to the DSP processing module.

DSP Processing Module

The DSP processing module is the core processing unit of the system, responsible for real-time processing and analysis of the captured signals. The DSP processor, with its high-speed computing capability and powerful digital signal processing capability, can quickly perform operations such as filtering, spectrum analysis, and waveform recognition on the signals. In the detection of compaction degree, the DSP processing module primarily performs spectrum analysis on the vibration signals to extract features related to compaction degree, such as the fundamental frequency and amplitude, and calculates the real-time value of the compaction degree based on these parameters.

Data Display and Storage Module

The data display and storage module is responsible for displaying and storing the real-time values of the compaction degree calculated by the DSP processing module. This module can use devices such as LCDs or touch screens to display the compaction degree data in real-time and save the data through storage devices such as SD cards or USB interfaces. Additionally, this module can communicate with an upper computer to upload real-time data for further analysis and processing.

Power Management Module

The power management module provides a stable power supply for the entire system. Since the vehicle-mounted real-time compaction degree detection system has to work for long periods, the power management module must have efficient and stable power conversion capabilities and good thermal dissipation performance. Moreover, this module should have protection features such as overcurrent, overvoltage, and overtemperature to ensure the safe and reliable operation of the system.

Software Design

Software design is a key aspect of implementing the vehicle-mounted real-time compaction degree detection system. Based on the system's functions and requirements, programming languages such as C or assembly language can be used for software design. The software design mainly includes the following parts:

Initialization Program

The initialization program is responsible for setting up each module when the system is powered on, including the initialization of the DSP processor, ADC, and LCD. It also sets the parameters and working modes of each module to ensure the system can operate normally.

Signal Acquisition Program

The signal acquisition program controls the signal acquisition module to capture and digitize signals. It sets parameters such as the sampling rate and accuracy of the ADC and selects appropriate sensors for signal acquisition based on actual needs. Additionally, the program preprocesses the captured signals, such as filtering and amplification, to improve signal quality and reliability.

DSP Processing Program

The DSP processing program is the core processing unit of the system, responsible for real-time processing and analysis of the captured signals. The DSP processor, with its high-speed computing capability and efficient digital signal processing capability, can quickly perform operations such as filtering, spectrum analysis, and waveform recognition on the signals. In the detection of compaction degree, the DSP processing module primarily performs spectrum analysis on the vibration signals to extract features related to compaction degree, such as the fundamental frequency and amplitude, and calculates the real-time value of the compaction degree based on these parameters.

Data Display and Storage Program

The data display and storage program is responsible for displaying and storing the real-time values of the compaction degree calculated by the DSP processing module. The program communicates with display devices such as LCDs to display real-time data in an appropriate format. It communicates with storage devices such as SD cards or USB interfaces to save real-time data. Additionally, the program communicates with an upper computer to upload real-time data for further analysis and processing.

System Testing and Optimization

After the system design and implementation are completed, system testing and optimization are required. First, test the system functions to ensure the system operates normally and meets design requirements. Then, test and optimize the system's real-time performance and accuracy to improve execution performance and reliability. Finally, test and evaluate the system's robustness and reliability to ensure the system can work stably in various complex situations and meet actual application needs.

Conclusion

This paper proposes a design scheme for a vehicle-mounted real-time compaction degree detection system based on DSP. The system achieves real-time and accurate detection of compaction degree by monitoring and processing signals generated during the compaction process. In hardware design, high-performance DSP processors and supporting sensors are used for signal acquisition and processing. In software design, programming languages such as C or assembly language are used to implement system functions. Through system testing and optimization, the system can ensure high performance, high reliability, and high stability, meeting actual application needs.