CN1016902B - Method for receiving electromagnetic radiation before seism and equipment thereof - Google Patents
Method for receiving electromagnetic radiation before seism and equipment thereofInfo
- Publication number
- CN1016902B CN1016902B CN 90108556 CN90108556A CN1016902B CN 1016902 B CN1016902 B CN 1016902B CN 90108556 CN90108556 CN 90108556 CN 90108556 A CN90108556 A CN 90108556A CN 1016902 B CN1016902 B CN 1016902B
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- electromagnetic radiation
- seism
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Abstract
The present invention discloses a method and equipment for receiving electromagnetic radiation before an earthquake. An earthquake information antenna is erected on the surface of a large-sized metallic substance near a geological fault, an earthquake direction-finding antenna is installed, information caught by the two groups of the antennas is correspondingly rectified by filtration, and a filtration detecting circuit enters a computer to carry out data processing through an A/D analog-to-digital conversion passage. Abnormal signals can be received by a system in 10 to 15 days generally, and the present invention has the advantages of large signal, clear display and strong anti-interference capacity.
Description
The present invention relates to a kind of method and apparatus of using electromagnetic radiation before seism in short forecasting.
At present, the earthquake bound pair is admitted widely in " before the earthquake; the little broken stage of curstal fault; have electromagnetic radiation " this phenomenon, people expect the short forecasting that carries out earthquake with electromagnetic radiation before seism information for this reason, and disclosing a kind of " earthquake electromagnetic information receiver " among the Chinese patent CN2050174V is exactly to have made effort for the development research in this field.This receiver system is by the ground receiving system, underground receiving system, monitoring and timing circuit and register system etc. are partly formed, it is by on the ground, underground to recently shaking precursor signal and ground undesired signal distinctively, though this receiver system imagination is ingenious, but a subterranean well vertical antenna is installed not is an easy thing, and the ground to be compared and gets rid of various undesired signals with underground signal, then need be equipped with complicated, the circuit of better quality, not mentioned improvement or renewal of this receiver system in addition to register system, present register system is a mechanical type, can not automatic data processing, fragile, precision is low, and function falls behind a generation.In retrieval about " method and apparatus of earthquake short forecasting ", No. 0067924 document of European patent EP discloses a kind of " method and apparatus that predicts an earthquake ", Chinese patent CN1032240A document discloses a kind of " receiver of alternative electric information for premonition of earthquake ", above-mentioned two inventions are all to receive the short forecasting that seismic electrical signal carries out earthquake, because seismic electrical signal is a very complicated physical quantity, to its accuracy that predicts an earthquake be difficult to compellent.
For overcoming above-mentioned deficiency, task of the present invention is that a kind of antijamming capability of proposition is strong, visual clear display, enforcement convenience, and functions of the equipments are strong, with the time that receiving electromagnetic radiation before seism forecasts following earthquake, the method and apparatus of the short forecasting in earthquake magnitude and orientation.
The present invention realizes by following approach: the receiving electromagnetic radiation before seism information that at first erects a television antenna, then the electromagnetic radiation information that receives is carried out data processing.According to the electromagnetic reception principle of physics: " utilization is placed on the conductor in the electromagnetic wave propagation space; just can receive electromagnetic wave ", and in " transistor " book about the argumentation of magnetic antenna: " magnetic conductive substance has the ability of assembling magnetic-field component in the electromagnetic wave " (P18, Science Press publishes, in November, 1971), can draw: when electromagnetic radiation before seism took place, metallics can be concentrated the reception magnetic line of force, makes its electromagnetic intensity be higher than external electromagnetic field intensity.When selective reception electromagnetic radiation before seism frequency range, select the above frequency range of intermediate frequency then to be vulnerable to artificial interference, low-frequency range, the for example electromagnetic radiation of 5～1200 He Zhi, because required power is very big during emission, manually be difficult to radiation, the signal that receives this frequency range is credible high, and according to the argumentation of front and inventor facts have proved for many years: large-scale metal object mass-energy strengthens the intensity of low frequency variable electromagnetic field.The method applied in the present invention is: set up earthquake information antenna and earthquake orientation detecting antenna, the earthquake information antenna is to be erected near the large-scale metallics surface of geofault, the distance on earthquake information antenna and this metallics surface is no more than 60～100 centimeters, and parallel with this metallics surface; The electromagnetic radiation before seism information that the earthquake information antenna receives is handled in computer CPU through filter rectification, A/D analog to digital conversion passage; The earthquake orientation detecting antenna is to make the identical antenna of parameter by at least four medium wave bar magnets, be fixed on east, south, the west, on the four direction of north, the information that the earthquake orientation detecting antenna receives is respectively through the vector value in four orientation of detection and A/D analog to digital conversion passage record, and constantly enter in the computer CPU, establishment of threshold value in the computer software degree, when earthquake information channel record value reaches threshold value, just the orientation vector value of contemporary record is calculated, the position angle of calculating is deposited in the floppy disk with this earthquake information value: computing machine only deposits floppy disk in to the earthquake information data that are higher than threshold value and the azimuth value of the same period and corresponding time, and printable demonstration.Device therefor of the present invention comprises earthquake information antenna, earthquake orientation detecting antenna and receiving trap, and receiving trap is to connect robot calculator by A/D analog to digital conversion passage respectively by filter rectifier, detecting circuit to constitute.
Scheme reception earthquake information signal proposed by the invention is big, clear, reliability is high; Receiving trap uses a computer, have pair information carry out processing capacity and writing function strong, and easily realize multiple spot networking; This receiving trap except that filter rectifier filtering, establishment of threshold value in software program, suitable secondary filtering, antijamming capability is strong, can tentatively forecast following earthquake, generally within about 10～15 days, receives abnormal signal before shake; 24 hours every days, running reached more than 2 years continuously in this system, and any fault does not take place, and durability is good.
Below in conjunction with accompanying drawing the present invention is done to describe further:
Fig. 1 is an electromagnetic radiation before seism method of reseptance synoptic diagram.
Fig. 2 is an electromagnetic radiation before seism receiving equipment theory diagram.
The electromagnetic radiation information figure of Fig. 3 for recording under the normal condition.
Fig. 4 is the electromagnetic radiation abnormality hum pattern that records before the earthquake of Qinghai on the 26th republicanism generation April in 1989 MS7.3 level.
Fig. 5 is the electromagnetic radiation abnormality hum pattern that records before the 5.1 grades of earthquakes in Datong on Dec 9th, 1989.
Fig. 6 is the electromagnetic radiation information figure of record before the 3.5 grades of earthquake of collapsing in Mentougou on May 10 nineteen ninety.
As shown in Figure 1, the receiving electromagnetic radiation before seism information that at first erects a television antenna is carried out data processing to the electromagnetic radiation information that receives then, and antenna used in the present invention comprises earthquake information antenna 1 and earthquake orientation detecting antenna 2.Earthquake information antenna 1 is to be erected near the large-scale metallics of geofault, the position of geofault can be determined according to the geology tomograph, large-scale metallics can be the floor of large-sized reinforced structure or iron tower etc., its surface area is more than 500 square meters, earthquake information antenna 1 is no more than 60～100 centimeters with the distance on this metallics surface, and it is parallel with this metallics surface, the electromagnetic radiation before seism information that earthquake information antenna 1 receives is through filter rectification 3, A/D analog to digital conversion passage 5 is handled in computer CPU 6, earthquake orientation detecting antenna 2 is by at least four medium wave bar magnets, for example use 5, make five antennas that parameter is identical, be fixed on east, the west, south, north, on the vertical five positions, the frequency that can select the medium wave bar magnet is 400 kilo hertzs of sesames, frequency range is 10 kilo hertzs of sesames, the earthquake orientation detecting antenna can place indoor, the electromagnetic radiation before seism information that earthquake orientation detecting antenna 2 receives constantly enters in the computer CPU old with new generation through the vector value of each self-corresponding detection 4 and A/D analog to digital conversion passage 5 record five positionses; Establishment of threshold value 7 in computer software programs, when earthquake information channel record value reaches threshold value, just the orientation vector value of contemporary record is calculated 8, the position angle and this earthquake information value that calculate are deposited among the RAM9, when the data that write down among the RAM9 expire certain value, for example expire 80 records, these 80 records are deposited in the diskette 10 automatically as a file, and on screen, draw automatically, smear figure, also printable demonstration.As shown in Figure 2, device therefor of the present invention connects robot calculator 11 by A/D analog to digital conversion passage 5 respectively by earthquake information antenna 1, earthquake orientation detecting antenna 2, filter rectifier 3, detecting circuit 4 and constitutes, wherein earthquake information antenna 1 can be that 50～110 meters straight lead constitutes by length, also can be made of the feeder line of same length, it receives frequently is 5～1200 He Zhi; Robot calculator 11 can adopt Macintosh or IBM and compatible thereof.Figure 3 shows that the file electromagnetic wave information figure that computer recording arrives under the normal condition, wherein horizontal ordinate is represented recording mechanism, and per 80 are recorded as a file, and computing machine is a dot map with the maximal value of each record; Ordinate is represented the electromagnetic radiation vibration amplitude, in this record, selected threshold value is 160mV, the record that only is higher than 160mV in each file just is allowed to occur, the selection of threshold value can obviously show the earthquake letter with this observation station, be criterion with floppy disk less again as far as possible, simultaneously determine normal amplitude of vibration value in this observation station according to the power of observation station receiving electromagnetic radiation signal, for example in the Fangshan observation station, the amplitude of vibration value is below 629 millivolts under the normal condition, the selection of threshold value and normal amplitude of vibration value is to draw through repeatedly testing, the most following time period from behavior record among the figure.Figure 4 shows that its electromagnetic radiation abnormality information that earthquake recorded about preceding ten days with generation MS7.3 level of Qinghai on April 26th, 1989, as the selected 160mV of threshold value, the normal condition amplitude of vibration is chosen in below the 690mV, and existing many places shown in Figure 4 crest value surpasses normal value.Figure 5 shows that the electromagnetic radiation abnormality information that the 5.1 grades of earthquakes in Datong on Dec 9th, 1989 recorded in preceding 14 days.
The present invention can be used for also monitoring that mine subsides except that being used to predict an earthquake, Figure 6 shows that the electromagnetic radiation information that recorded before May 10 nineteen ninety, the Mentougou mine subsided.
Claims (3)
1, a kind of method of receiving electromagnetic radiation before seism may further comprise the steps:
A, set up earthquake information antenna (1) receiving electromagnetic radiation before seism information,
B, the electromagnetic radiation information that receives is carried out record,
It is characterized in that:
C, earthquake information antenna (1) are to be 5～1200 He Zhi by receiving frequency range, length is that 50～100 meters straight lead constitutes, this earthquake information antenna (1) is that parallel shelf is located near the geofault the large-scale metallics surface, and is no more than 60～100 centimeters with the distance on this metallics surface
D, installation earthquake orientation detecting antenna 2, this earthquake orientation detecting antenna (2) is to be made of at least four identical medium wave bar magnets of parameter, and its receive frequency is 400 kilo hertzs of sesames, and frequency span is 10 kilo hertzs of sesames, and is fixed on the directions such as east, south, west, north.
The electromagnetic radiation before seism information that e, earthquake information antenna (1) receive is carried out data processing through filter rectification (3), A/D analog to digital conversion passage (5) in robot calculator (11); The vector value that pairing detection of signal (4) that electromagnetic radiation before seism information warp and all directions antenna that earthquake orientation detecting antenna (2) receives receives and A/D analog to digital conversion passage (5) write down each direction, and constantly enter in the computer CPU (6), with new generation old in computer software programs establishment of threshold value (7), when the information channel record value reaches threshold value (7) before the shake, just the direction vector value of contemporary record is calculated (8); The value of information deposits among the computing machine RAM (9) before the position angle of calculating and this shake, deposits in the floppy disk (10) standby then.
2, a kind of equipment of receiving electromagnetic radiation before seism is made up of earthquake information antenna (1) and receiving trap etc., it is characterized in that:
A, earthquake information antenna (1) are to be 5～1200 He Zhi by receiving frequency range, length is that 50～100 meters straight lead constitutes, this earthquake information antenna (1) is that parallel shelf is located near the large-scale metallics surface of geofault, and be no more than 60～100 centimeters with the distance on this metallics surface
B, installation earthquake orientation detecting antenna 2, this earthquake orientation detecting antenna (2) is to be made of at least four identical medium wave bar magnets of parameter, and its receive frequency is 4000 kilo hertzs of sesames, and frequency span is 10 kilo hertzs of sesames, and is fixed on the directions such as east, south, west, north.
3, the equipment of receiving electromagnetic radiation before seism according to claim 2 is characterized in that receiving trap is to connect robot calculator (11) by each self-corresponding A/D analog to digital conversion passage (5) respectively by filter rectifier (3) and detecting circuit (4) to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108556 CN1016902B (en) | 1990-10-29 | 1990-10-29 | Method for receiving electromagnetic radiation before seism and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108556 CN1016902B (en) | 1990-10-29 | 1990-10-29 | Method for receiving electromagnetic radiation before seism and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051625A CN1051625A (en) | 1991-05-22 |
| CN1016902B true CN1016902B (en) | 1992-06-03 |
Family
ID=4881048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108556 Expired CN1016902B (en) | 1990-10-29 | 1990-10-29 | Method for receiving electromagnetic radiation before seism and equipment thereof |
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| Country | Link |
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| CN (1) | CN1016902B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421969C (en) * | 2004-02-02 | 2008-10-01 | 百乐墨水株式会社 | Ball-pen point and water ball pen using same |
-
1990
- 1990-10-29 CN CN 90108556 patent/CN1016902B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421969C (en) * | 2004-02-02 | 2008-10-01 | 百乐墨水株式会社 | Ball-pen point and water ball pen using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1051625A (en) | 1991-05-22 |
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