The Research And Development For The High-resolution And Low-power Shallow Seismic Exploration Instrument

Shallow seismic exploration methods are one of the most important and popular geophysics methods in engineering, hydrogeology, and environment exploration. It confronted the vital question of being the detection of shallow and small underground structure under grave interference background. The key to solve this issue depend on advancing seismic record resolution and realizing exactitude survey. However, the resolution is a synthetic and systemic concept that impenetrate full survey. Therefore, many theoretic and technical problems should be dealt with for higher resolution in the shallow seismic exploration.In this paper, focusing on the seismic record resolution and taking the shallow seismic instruments as research subjects, through the integrated application of several kind theories and technologies including seismic survey, systems engineering, signal analysis, sensor, data acquisition system, embedded system, digital signal processing and so on, there's a thorough and systemic research on the resolution analysis methods of seismic records and seismic instruments, the platform-based design methodology for low-power & high-resolution shallow seismograph, and the product development base on platform for mine shallow seismograph. As follows:1. We put forward to the analysis method of seismic record resolution based on time-resolution and amplitude resolution. By using the method, the key factors of influencing seismic record resolution can be easily analyzed theoretically, and the corresponding solution can be put forward. It provides theoretical foundation for product development of high-resolution shallow seismic exploration instrument.2. We put forward to the analysis method of seismic instrument resolution based on dynamic ranges and frequency characteristics. With the method, the resolution analysis problem of shallow seismic instrument can be solved effectively. It offers technical basis for product development of high-resolution shallow seismic instrument.3. We put forward to the platform-based design methodology for seismic seismograph. The methodology has the advantages of advancement, scientificalness, practicability, high effectiveness, flexibility, tailorable ability, maintainability, extensibility and scalability. By using the method, we can not only develop the low-power & high resolution product of shallow seismic exploration instrument, but also eradicate the various drawbacks brought out by the device-based design method. It offers technical guarantee for the series products development of high-resolution shallow seismic exploration instrument.4. We developed two kinds of new products for low-power and high-resolution mine shallow seismograph, mine geology detector and mine tunnel predictor. By field experimental verification, they can solve effectively the detecting problem of small geological structure and coal seam thickness around underground coal mine tunnel. Their performance and function of reached or exceeded the level of domestic similar products, and their power consumption (≤4W) is lower than the advanced high-resolution shallow seismographs at home and abroad.