An Earthquake Precursor Schumann Resonance Vertical Electric Field Receiver
A technology of Schumann resonance and vertical electric field, applied in the direction of seismic signal receivers, etc., can solve the problems of high geographical environment requirements, complex structure, poor anti-interference ability, etc., and achieve the effect of simplified signal conditioning module, simple structure and easy implementation
Inactive Publication Date: 2018-06-26
江苏省地震局
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Problems solved by technology
[0004] The technical problem solved by the present invention is: the existing ULF / ELF magnetic field receiving equipment adopts an orthogonal dipole antenna, which has a complex structure, poor anti-interference ability, low receiving sensitivity, high requirements on the geographical environment, complex demodulation and extraction equipment, and Can only receive 4th order Schumann resonance signal
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[0016] In conjunction with accompanying drawing, specific embodiment of the present invention is described in detail;
[0017] Such as figure 1 , an earthquake precursor Schumann resonance vertical electric field receiving equipment, including a T-shaped antenna assembly, a signal conditioning module, an analog-to-digital conversion module and an analysis host, the signal conditioning module includes a preamplifier circuit unit, a 50Hz trap circuit unit and a low pass filter circuit unit;
[0018] The T-shaped antenna assembly is connected to the input end of the pre-amplification circuit unit, the output end of the pre-amplification circuit unit is connected to the input end of the 50Hz notch circuit unit, and the output end of the 50Hz notch circuit unit is connected to the The input end of the low-pass filter circuit unit is connected, the output end of the low-pass filter circuit unit is connected to the input end of the analog-to-digital conversion module, and the outpu...
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The invention discloses an earthquake precursor Schumann resonance vertical electric field receiving device. The device includes a T-shaped antenna assembly, a signal conditioning module, an analog-to-digital conversion module and an analysis host. The signal conditioning module comprises a preamplifier circuit unit, a 50Hz trap wave circuit unit and a low-pass filtering circuit unit. The T-shaped antenna assembly is connected with an input end of the preamplifier circuit unit, an output end of which is connected with an input end of the 50Hz trap wave circuit unit. An output end of the 50Hz trap wave circuit unit is connected with an input end of the low-pass filtering circuit unit, an output end of which is connected with an input end of the analog-to-digital conversion module. An output end of the analog-to-digital conversion module is connected with the analysis host. The T-shaped antenna assembly and the signal conditioning module are simplified, and thus the device is easy to implement. Enormous calculation is not necessary, a proper analog signal can be obtained through three steps, and finally Schumann resonance with low noise and high quality can be seen in an obtained power spectrum.
Description
technical field [0001] The invention relates to the field of earthquake prediction and prediction, in particular to an earthquake precursor Schumann resonance vertical electric field receiving device. Background technique [0002] Japanese researchers set up ULF / ELF magnetic field receiving instruments on the ground, and found that the received signal has Schumann resonance anomalies that may be related to seismic activity, and conducted comparisons of earthquake cases and statistical characteristics research. Harbin Institute of Technology (Weihai) cooperated with Japan, established in 2009 Established my country's first Sino-Japanese cooperative SR monitoring station. [0003] At present, the nonlinear effect of high-frequency electromagnetic waves and Schumann resonance is mainly used to receive and modulate high-frequency waves to obtain Schumann resonance. The theoretical calculation is very complicated and difficult to implement. The observation equipment uses orthogona...
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IPC IPC(8): G01V1/18
Inventor 卢永瞿旻戴波单菡宫杰
Owner 江苏省地震局