Electromagnetic sensor calibration chamber apparatus and calibration method
An electromagnetic sensor and calibration device technology, which is applied to instruments, geophysical measurements, etc., can solve the problems of lack of third-party inspection of electromagnetic sensors, restricting the large-scale popularization and use of technology, and achieve the effects of complete functions, high degree of automation, and low cost.
Active Publication Date: 2016-05-04
JILIN UNIV +2
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Problems solved by technology
This not only limits the large-scale promotion and use of the technology, but also lacks third-party inspections of the performance and technical indicators of electromagnetic sensors.
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[0019] Below in conjunction with accompanying drawing and embodiment the present invention is further described in detail:
[0020] The calibration device for the amplitude-frequency and phase-frequency characteristics of the electromagnetic sensor is a shielding room with electromagnetic shielding plates 3 on six sides composed of the supporting beam 4 and the electromagnetic shielding plate 3 in the electromagnetic shielding room. There are hydraulic vibration generators 11 on both sides, and a calibration chamber 5 is placed on the bearing platform 12. A temperature-controlled liquid chamber 6 and a bearing cap 10 are arranged in the calibration chamber 5, and a temperature-controlled liquid chamber 6 is provided with Field source generator 7, one end of bearing cap 10 is equipped with probe clamp 9, and measured probe 8 is stuck between probe clamps 9, and one end of vibration connecting rod 30 is fixedly connected with the bottom end of bearing cap 10, and vibration connec...
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The invention relates to an apparatus for calibrating amplitude frequency and phase frequency features of an electromagnetic sensor. The calibration apparatus is constructed in such a way that an electromagnetic shielding chamber is internally provided with a bearing platform, the bearing platform is provided with hydraulic vibration generators, a calibration chamber is internally provided with a temperature control liquid chamber and object bearing caps, the temperature control liquid chamber is internally provided with a field source generator, one end of each object bearing cap is provided with a probe clamp, one end of each vibration connecting rod is fixedly connected with the bottom end of the corresponding object bearing cap, the other ends of the vibration connecting rods are fixedly connected with vibration rods of the hydraulic vibration generator, and the field source generator and the probe clamps are respectively connected with a master control computer outside the shielding chamber through a control cable. Such technical indexes as magnetic field intensity, temperature, oscillation acceleration and the like are set in a designed measuring range, and a test research platform is provided for realizing a low-frequency electromagnetic sensor temperature and vibration effect automatic compensation technology; calibration and detection of sensor performance technical indexes in a simulated field working environment are realized; and the apparatus has the advantages of complete functions, high automation, low cost and the like.
Description
technical field [0001] The invention relates to a calibration device and a calibration method for the amplitude-frequency and phase-frequency characteristics of electromagnetic sensors widely used in electromagnetic prospecting, especially in the device, which can simulate the temperature and environmental vibration of the sensor under field working conditions. The influence of the frequency and phase frequency characteristics, thus providing a technical guarantee for the automatic compensation of electromagnetic sensors, and also providing an experimental basis for the standardized calibration of electromagnetic sensors. Background technique: [0002] The electromagnetic method is the main geophysical method for the exploration of deep mineral resources. At present, the electromagnetic method instruments and equipment in our country are almost entirely dependent on imports. In particular, the electromagnetic sensors widely used in the electromagnetic method are monopolized b...
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IPC IPC(8): G01V13/00
CPCG01V13/00
Inventor 牛建军翟松涛张晓培张琪杜立志王勇邱建慧
Owner JILIN UNIV