Background analysis:
China has a vast land and abundant resources, being rich in minerals, petroleum and other non-renewable natural resources. As people's consumption of natural resources is increasing, the geological prospecting technology and survey methods have also been developed with each passing day. In the geologic prospecting, the common geophysical methods are gravity method, magnetic method, electric (magnetic) method and seismic method, etc., as well as the comprehensive application of various methods. Among others, magnetic prospecting has irreplaceable advantages, and is widely used in basic geological research, solid mineral prospecting, oil and gas tectonic prospecting, geothermal investigation, engineering geology, archaeology, etc. The essential equipment for magnetic prospecting is the magnetic sensor. At present, many high-precision magnetometers need to be imported and are subject to embargo. Three-component magnetometer independently developed and manufactured by Guochuang has completely independent intellectual property rights, and has great importance to the application of our geologic prospecting industry and the relevant fields.
Product descriptions:
Guochuang Three-component Magnetometer is used for recording the total field strength of the magnetic field and recording the base value of single machine diurnal variation or the magnetic field value at each point when the single machine is running, providing basic data for geologic prospecting mapping. In the engineering prospecting, it can accurately detect the positions and depths, etc. of steel piles, reinforcement cages and other ferromagnetic objects. Guochuang Three-component Magnetometer is an absolute measurement recorder that measures and records the geomagnetic field H (horizontal field intensity), Z (vertical field intensity) and B (total field intensity) at a single point or continuous points. The instrument system is mainly based on the principle of GMI effect, and is composed of excitation circuit and analog signal processing circuit, analog-to-digital conversion circuit, GPS receiving circuit, LCD circuit and power supply circuit, etc. for magnetically sensitive materials. Therefore, it achieves the goals of data acquisition, processing, storage, real-time display of observation values, and instrument calibration, etc. for H (horizontal field intensity), Z (vertical field intensity) and B (total field intensity of earth).
Guochuang Three-component Magnetometer is a digital magnetometer. The instrument can record point measurement time, latitude and longitude and elevation variation while measuring H (horizontal field intensity), Z (vertical field intensity) and B (total field intensity of earth). The instrument uses GPS timing and positioning to display the three-component variation of the geomagnetic field in real time. The instrument is used for absolute measurement, with probe miniaturization, wide frequency band, macro dynamics, high sampling rate and large capacity data storage. It also has the characteristics of USB mobile hard disk storage, low power consumption and high absolute accuracy. In the geomagnetic observations, it adopts an absolute observation and relative recording as a mutual complementation (automatic measurement of diurnal variation at a single point). The data format is flexible and can be adapted to mainstream data processing software, e.g. surfer (customizable). Compared with the proton magnetometer, Guochuang Three-component Magnetometer has a faster response speed and gradient tolerance; compared with the fluxgate, Guochuang Three-component Magnetometer has a faster response speed.
Principle:
The magnetic anomaly target contains materials or currents with ferromagnetic characteristics (such as iron, cobalt, nickel, etc.). We use Guochuang Micro-magnetic Basic Sensor Array to detect the magnetic anomaly information caused by the ferromagnetic target. According to the corresponding model algorithm, the related feature information of ferromagnetic target can be determined. The intensity of the magnetic field is inversely proportional to the cubic target distance, H∝M/R3. The rocks and ores in nature have different magnetic parameters, which can produce different magnetic fields. They cause the earth's magnetic field to change in local areas and geomagnetic anomalies. Guochuang Three-component Magnetometer is used to identify and study these magnetic anomalies, and then the magnetic ore bodies and study geological structures can be found.
Technical solution:
The three-component magnetometer is mainly composed of Guochuang Micro-magnetic Basic Sensor Array, which has the potential and advantages to replace traditional magnetic sensors, especially in the field of geological prospecting.
The main components of the system:
1. Guochuang Three-component Magnetometer is composed of micro-magnetic basic sensor array, communication module, digital signal unit, etc.;
2. The micro-magnetic basic sensor array is installed in Guochuang Three-component Magnetometer;
3. Related algorithms include: micro-magnetic basic sensor array calibration, environmental noise suppression, processing of magnetic anomaly targets small signal, etc.;
4. Data processing: collection of data and information such as micro-magnetic basic sensor array single point data and magnetic anomaly diurnal variation;
5. Terminal display: display the working status and parameter information of Guochuang Three-component Magnetometer.
