CN111257924A - Earthquake energy absorption and earthquake prediction device - Google Patents
Earthquake energy absorption and earthquake prediction device Download PDFInfo
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- CN111257924A CN111257924A CN202010042213.6A CN202010042213A CN111257924A CN 111257924 A CN111257924 A CN 111257924A CN 202010042213 A CN202010042213 A CN 202010042213A CN 111257924 A CN111257924 A CN 111257924A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/14—Signal detection
- G01V2210/142—Receiver location
- G01V2210/1425—Land surface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/14—Signal detection
- G01V2210/142—Receiver location
- G01V2210/1429—Subsurface, e.g. in borehole or below weathering layer or mud line
Abstract
The invention discloses an earthquake energy absorption and earthquake prediction device, which comprises a shell, an underground energy absorption device and a ground early warning device, wherein the underground energy absorption device comprises an energy absorption assembly and a circuit processing device, the energy absorption assembly comprises a stress rod, a piezoelectric sheet and a mass block, the stress rod comprises a fixed arm and a free arm, the fixed arm is vertical to the free arm, one end of the fixed arm is fixed on the inner wall of the shell, the other end of the fixed arm is connected with one end of the free arm, the piezoelectric sheet is adhered to the surface of the fixed arm, and the mass block is fixed at the other end of the free arm; the circuit processing device is characterized in that an energy absorption circuit is arranged in the circuit processing device and comprises a rectifying module, a storage module and a DC-DC conversion module, the piezoelectric patches are electrically connected with the rectifying module, and the rectifying module, the storage module, the DC-DC conversion module and the ground early warning device are sequentially connected. The invention realizes the effective utilization of the earthquake energy and the prediction of the earthquake occurrence direction.
Description
Technical Field
The invention relates to the technical field of earthquake prediction, in particular to an earthquake energy absorption and earthquake prediction device.
Background
The earthquake prediction has been the focus of attention of people, earthquakes occur frequently in various parts of China in recent years, the national and personal economic losses are huge, and casualties are heavy. The escape time is particularly important when an earthquake comes, and if the earthquake can be known in advance or dozens of seconds are strived for when the earthquake is just weak, a lot of lives and properties can be saved. The earthquake prediction devices on the market at present are of a magnetoelectric type and an eddy current type, the internal structures of the earthquake prediction devices are all composed of permanent magnets and coils, and the electromagnetic induction principle is basically applied, so that the internal structures of the earthquake prediction devices are all of high-elasticity structures like coils, and all parts are easy to generate large relative motion and generate deformation, so that the earthquake waveform is easy to generate deformation, further signal distortion is caused, in addition, the performance of the permanent magnets can be changed, the magnetism can be eliminated along with the time, the service lives of the earthquake prediction devices are not long, and the earthquake energy is not fully utilized.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a device for absorbing seismic energy and predicting seismic energy, so as to solve the technical problems that the seismic energy cannot be effectively predicted and cannot be effectively utilized at present.
In order to achieve the purpose, the invention adopts the following technical scheme:
an earthquake energy absorption and earthquake prediction device comprises a shell, an underground energy absorption device and a ground early warning device, wherein,
the interior of the shell is hollow and forms an accommodating cavity;
the underground energy absorption device comprises an energy absorption assembly and a circuit processing device, the energy absorption assembly and the circuit processing device are both positioned in the accommodating cavity, the energy absorption assembly comprises a stress rod, a piezoelectric sheet and a mass block, the stress rod comprises a fixed arm and a free arm, the fixed arm is perpendicular to the free arm, one end of the fixed arm is fixed on the inner wall of the shell, the other end of the fixed arm is connected with one end of the free arm, the piezoelectric sheet is bonded on the surface of the fixed arm, and the mass block is fixed at the other end of the free arm; an energy absorption circuit is arranged in the circuit processing device and comprises a rectifying module, a storage module and a DC-DC conversion module, the piezoelectric plate is electrically connected with the rectifying module, and the rectifying module, the storage module, the DC-DC conversion module and the ground early warning device are sequentially connected;
the rectifying module converts alternating current output by the piezoelectric patches into direct current and outputs the direct current to the storage module, the storage module outputs stored electric energy to the DC-DC conversion module, and the DC-DC conversion module performs voltage conversion and supplies power to the ground early warning device.
Preferably, in the device for absorbing seismic energy and predicting an earthquake, the housing includes a housing and an end cover, the housing is hollow, the end cover is detachably connected to the housing, the housing and the end cover enclose the accommodating cavity, and a plurality of wire holes communicated with the accommodating cavity are formed in a side wall of the housing.
Preferably, in the device for absorbing seismic energy and predicting earthquake, the end cover and the shell are in threaded connection through a plurality of bolts.
Preferably, in the device for absorbing seismic energy and predicting earthquake, the DC-DC conversion module is connected to the ground early warning device through a wire, and the wire passes through the wire hole.
Preferably, in the device for absorbing seismic energy and predicting an earthquake, the housing includes a housing and an end cover, the housing is hollow, the end cover is detachably connected to the housing, the housing and the end cover enclose the accommodating cavity, and a plurality of wire holes communicated with the accommodating cavity are formed in a side wall of the housing.
Preferably, in the device for absorbing seismic energy and predicting seismic energy, the energy storage module includes an energy storage capacitor, one end of the energy storage capacitor is connected to the 4 th end of the rectifier bridge and the DC-DC conversion module, and the other end of the energy storage capacitor is connected to the 2 nd end of the rectifier bridge and the ground end.
Preferably, in the device for absorbing seismic energy and predicting an earthquake, the DC-DC conversion module includes a first capacitor, a second capacitor, a resistor, a zener diode, and a boost chip, one end of the first capacitor is connected to one end of the energy storage capacitor and one end of the resistor, the other end of the first capacitor is connected to a ground terminal, the other end of the resistor is connected to a pin 1 of the boost chip and an anode of the zener diode, a pin 2 of the boost chip is connected to a cathode of the zener diode, one end of the second capacitor, and the ground warning device, a pin 3 of the boost chip is connected to the ground warning device, and the other end of the second capacitor is grounded.
Preferably, in the earthquake energy absorption and earthquake prediction device, the ground early warning device comprises an external power supply, a current sensing switch and a buzzer, the positive pole of the external power supply is connected with one end of the buzzer, the negative pole of the external power supply is connected with the 1 st pin of the current sensing switch, the other end of the buzzer is connected with the 2 nd pin of the current sensing switch, the 3 rd pin of the current sensing switch is connected with the 2 nd pin of the boosting chip, and the 4 th pin of the current sensing switch is connected with the 3 rd pin of the boosting chip.
Preferably, in the device for absorbing seismic energy and predicting earthquake, the type of the boosting chip is CS 5173.
Preferably, in the device for extracting seismic energy and predicting earthquake, the type of the current induction switch is D200K.
Compared with the prior art, the earthquake prediction and earthquake energy absorption device provided by the invention has the advantages that when an earthquake occurs, the stress rod and the fixed mass block vibrate along with the earthquake, so that the piezoelectric sheet deforms, voltage is generated, and the voltage generated by the piezoelectric sheet is output to the circuit processing device for corresponding voltage processing. The underground energy absorption device is connected with the ground early warning device, so that the ground early warning device can detect the electric energy generated by the underground energy absorption device and immediately send out an alarm to remind people of the occurrence and the occurrence direction of an earthquake, and further the earthquake energy can be effectively utilized and the occurrence direction of the earthquake can be predicted.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the seismic energy extraction and prediction device of the present invention;
FIG. 2 is a schematic structural view of a preferred embodiment of the seismic energy absorption and prediction device of the present invention with the end caps removed;
FIG. 3 is a schematic structural view of a preferred embodiment of the energy absorber assembly of the seismic energy absorption and prediction device of the present invention;
FIG. 4 is a graph of the bending moment of a longitudinal wave induced force bar according to the present invention;
FIG. 5 is a bending moment diagram of the transverse wave induced stress beam of the present invention;
FIG. 6 is a schematic diagram of a preferred embodiment of the energy absorption circuit in the seismic energy extraction and prediction device of the present invention;
FIG. 7 is a schematic diagram of a preferred embodiment of the DC-DC conversion module in the seismic energy extraction and prediction device of the present invention;
fig. 8 is a schematic diagram of a preferred embodiment of the ground alarm device in the seismic energy extraction and prediction device of the present invention.
Detailed Description
The invention provides an earthquake energy absorption and earthquake prediction device, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "on," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.
Referring to fig. 1 to 6, the device for absorbing seismic energy and predicting earthquake provided by the embodiment of the present invention includes a housing 1, an underground energy absorbing device 2 and a ground early warning device 3, wherein,
the interior of the shell 1 is hollow and forms a containing cavity;
the underground energy absorption device 2 comprises an energy absorption assembly 21 and a circuit processing device 22, the energy absorption assembly 21 and the circuit processing device 22 are both positioned in the accommodating cavity, the energy absorption assembly 21 comprises a stress rod 211, a piezoelectric sheet 212 and a mass block 213, the stress rod 211 comprises a fixed arm 2111 and a free arm 2112, the fixed arm 2111 is perpendicular to the free arm 2112, one end of the fixed arm 2111 is fixed on the inner wall of the shell 1, the other end of the fixed arm 2111 is connected with one end of the free arm 2112, the piezoelectric sheet 212 is bonded on the surface of the fixed arm 2111, and the mass block 213 is fixed at the other end of the free arm 2112; an energy absorption circuit is arranged in the circuit processing device 22 and comprises a rectifying module 221, a storage module 222 and a DC-DC conversion module 223, the piezoelectric plate 212 is electrically connected with the rectifying module 221, and the rectifying module 221, the storage module 222, the DC-DC conversion module 223 and the ground early warning device 3 are sequentially connected.
Specifically, the stress rod 211 is of an L-shaped structure, one end of the stress rod 211 is fixed on the inner wall of the housing, the other end of the stress rod is free, a statically determinate structure is formed, and the mass block 213 is fixed at the free end of the stress rod 211, when an earthquake occurs, the stress rod 211 and the mass block 213 vibrate together, so that the piezoelectric plate 122 deforms, and further voltage and output power are generated, in addition, the mass block 213 is arranged at the tail end of the free arm 2112, when the earthquake occurs, the mass block 213 can vibrate along with the vibration and has the largest force arm, the sensitivity of the device is improved, and the arrangement of the mass block 213 can amplify the output signal of the piezoelectric plate 212; in addition, when an earthquake occurs, the ground vibrates vertically firstly and then horizontally, so that the L-shaped stress beam 211 provided by the invention can show the difference between longitudinal waves and transverse waves, as shown in FIG. 4, which is a bending moment diagram of the stress beam 211 caused by transverse waves, the bending moment on the side where the piezoelectric sheet 212 is attached is gradually increased and unevenly distributed, and therefore, the deformation of the piezoelectric sheet 212 is uneven; as shown in fig. 5, it can be seen that the bending moment of the force-receiving rod 211 caused by the longitudinal wave is uniformly distributed when the side to which the piezoelectric sheet 212 is attached is bent, so that the piezoelectric sheet 212 is deformed more uniformly, and the peak of the waveform of the output electric signal is first small and then large, the small peak is caused by the transverse wave, and the large peak is caused by the longitudinal wave.
Further, when an earthquake occurs, the alternating current voltage generated by the piezoelectric patch 212 is output to the energy absorption circuit connected to the piezoelectric patch 212, specifically, the rectifying module 221 converts the alternating current output by the piezoelectric patch 212 into direct current and outputs the direct current to the storage module 222, the storage module 222 outputs the stored electric energy to the DC-DC conversion module 223, the DC-DC conversion module 223 performs voltage conversion and then supplies power to the ground early warning device 3, so that the ground early warning device 3 performs alarm to prompt the occurrence of the earthquake, and thereby the absorption of earthquake energy and the earthquake prediction are realized; of course, the electric energy output by the DC-DC conversion module 233 can also be used to supply power to other loads, so as to utilize seismic energy to a greater extent, which is not limited in the present invention; in addition, it should be noted that, in a specific use, the housing 1 is buried underground, and the ground early warning device 3 is placed on the ground.
In a preferred embodiment, please refer to fig. 1 to 3, the housing 1 includes a housing 11 and an end cover 12, the housing 11 is hollow, the end cover 12 is detachably connected to the housing 11, the housing 11 and the end cover 12 enclose to form the closed accommodating cavity, and a plurality of wire holes 11a communicated with the accommodating cavity are opened on a side wall of the housing 11. In addition, as the shell 1 is detachable, the shell 1 can be detached at any time to overhaul the underground energy absorption device, so that convenience is provided for a user; the wire guide 11a is also provided for easy routing.
In a further embodiment, with continued reference to fig. 1, the end cap 12 and the housing 11 are threadedly connected by a plurality of bolts 13 to facilitate the detachment of the end cap 12 and the housing 11.
In a further embodiment, the DC-DC conversion module 223 is connected to the ground early warning device 3 through a wire (not shown), and the wire passes through the wire hole 11a, so as to facilitate the absorption of the earthquake energy and the installation of the earthquake prediction device.
With reference to fig. 6, the rectifier module 221 includes a rectifier bridge T1, the 1 st end of the rectifier bridge T1 is connected to the positive electrode of the piezoelectric plate 212, the 2 nd end of the rectifier bridge T1 is connected to the energy storage module 222 and the ground, the 3 rd end of the rectifier bridge T1 is connected to the negative electrode of the piezoelectric plate 212, and the 4 th end of the rectifier bridge T1 is connected to the energy storage module 222; specifically, the rectifier bridge T1 is a full-bridge rectifier circuit, and is composed of four diodes, and is configured to convert the ac output by the piezoelectric plate 212 into dc after rectification processing, and then output the dc to the energy storage module 222.
With reference to fig. 6, the energy storage module 222 includes an energy storage capacitor C, one end of the energy storage capacitor C is connected to the 4 th end of the rectifier bridge T1 and the DC-DC conversion module 223, and the other end of the energy storage capacitor C is connected to the 2 nd end and the ground end of the rectifier bridge T1; specifically, the electric energy output by the rectifier bridge T1 charges two ends of the energy storage capacitor C, the energy storage capacitor C stores the direct current input by the rectifier bridge T1 and then outputs the direct current, and the energy storage capacitor C is composed of a super capacitor, which is different from a conventional capacitor in that the super capacitor has a very high capacitance, and has the advantages of high power density, high cycle efficiency, longer service life and lower toxicity of materials used.
Referring to fig. 7, the DC-DC conversion module 223 includes a first capacitor C1, a second capacitor C2, a resistor R1, a zener diode D1, and a boost chip U1, wherein one end of the first capacitor C1 is connected to one end of the energy storage capacitor C and one end of the resistor R1, the other end of the first capacitor C1 is connected to a ground terminal, the other end of the resistor R1 is connected to the 1 st pin of the boost chip U1 and the anode of the zener diode D1, the 2 nd pin of the boost chip U1 is connected to the cathode of the zener diode D1, one end of the second capacitor C2, and the ground warning device 3, the 3 rd pin of the boost chip U1 is connected to the ground warning device 3, and the other end of the second capacitor C2 is grounded.
Specifically, the first capacitor C1 and the resistor R1 form an RC filter circuit, and are configured to filter a signal output by the energy storage capacitor C, and then output the filtered signal to the voltage boost chip U1, and the voltage boost chip U1 boosts the voltage output by the energy storage capacitor C to obtain a required voltage, and then the boosted voltage is filtered by the second capacitor C2 and output to the ground early warning device 3; the voltage stabilizing diode D1 plays a role in voltage stabilization; preferably, the type of the boost chip U1 is CS5173, the performance is stable, and the boost speed is fast, however, in other embodiments, the boost chip U1 may also be a chip of another type, which is not limited in the present invention.
Referring to fig. 8, the ground warning device 3 includes an external power source 31, a current sensing switch 32 and a buzzer 33, wherein a positive electrode of the external power source 31 is connected to one end of the buzzer 33, a negative electrode of the external power source 31 is connected to a 1 st pin of the current sensing switch 32, another end of the buzzer 33 is connected to a 2 nd pin of the current sensing switch 32, a 3 rd pin of the current sensing switch 32 is connected to a 2 nd pin of the boost chip U1, and a 4 th pin of the current sensing switch 32 is connected to a 3 rd pin of the boost chip U1.
Specifically, the ground early warning device 3 is configured to alarm when an earthquake occurs, when no earthquake occurs, the current passing through the current sensing switch 32 does not reach a threshold value and cannot be closed, so that the buzzer 33 cannot be powered on to alarm, when an earthquake occurs, the voltage boost chip U1 outputs current to the current sensing switch 32, so that the current of the current sensing switch 32 reaches the threshold value and is closed, and the buzzer 32 is powered on to start alarming to prompt the occurrence of the earthquake; in other words, when no earthquake occurs, the ground early warning device 3 is an open circuit, the buzzer 33 cannot work, and when an earthquake occurs, the buzzer 33 can work, so that the earthquake early warning function can be achieved, and meanwhile, the sensitivity of the ground early warning device 3 can be adjusted by adjusting the current threshold value sensed by the current sensing switch 32; preferably, the voltage of the external power supply 31 is 220V, the model of the current sensing switch 32 is D200K, and the model of the buzzer 33 is HR 8-N80.
In addition, since the device of the present invention measures seismic waves in a certain fixed direction in actual use, the direction of propagation of the seismic waves can be detected by embedding the device of the present invention in a desired different direction, and the direction of the sound of the buzzer 32 can be determined as the direction of the occurrence of the earthquake.
In summary, according to the earthquake energy absorption and earthquake prediction device provided by the invention, when an earthquake occurs, the stress rod and the fixed mass block vibrate along with the earthquake, so that the piezoelectric sheet deforms, and voltage is generated, and the voltage generated by the piezoelectric sheet is output to the circuit processing device for corresponding voltage processing. The underground energy absorption device is connected with the ground early warning device, so that the ground early warning device can detect electric energy generated by the underground energy absorption device and immediately send out an alarm to remind people of the occurrence and the occurrence direction of an earthquake, and further the earthquake energy can be effectively utilized and the occurrence direction of the earthquake can be effectively predicted.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. An earthquake energy absorption and earthquake prediction device is characterized by comprising a shell, an underground energy absorption device and a ground early warning device, wherein,
the interior of the shell is hollow and forms an accommodating cavity;
the underground energy absorption device comprises an energy absorption assembly and a circuit processing device, the energy absorption assembly and the circuit processing device are both positioned in the accommodating cavity, the energy absorption assembly comprises a stress rod, a piezoelectric sheet and a mass block, the stress rod comprises a fixed arm and a free arm, the fixed arm is perpendicular to the free arm, one end of the fixed arm is fixed on the inner wall of the shell, the other end of the fixed arm is connected with one end of the free arm, the piezoelectric sheet is bonded on the surface of the fixed arm, and the mass block is fixed at the other end of the free arm; an energy absorption circuit is arranged in the circuit processing device and comprises a rectifying module, a storage module and a DC-DC conversion module, the piezoelectric plate is electrically connected with the rectifying module, and the rectifying module, the storage module, the DC-DC conversion module and the ground early warning device are sequentially connected;
the rectifying module converts alternating current output by the piezoelectric patches into direct current and outputs the direct current to the storage module, the storage module outputs stored electric energy to the DC-DC conversion module, and the DC-DC conversion module performs voltage conversion and supplies power to the ground early warning device.
2. The device for absorbing seismic energy and predicting earthquake as claimed in claim 1, wherein said housing comprises a hollow casing and an end cap, said end cap is detachably connected to said casing, said casing and said end cap enclose said closed accommodating cavity, and a plurality of wire holes are opened on the side wall of said casing and are communicated with said accommodating cavity.
3. The seismic energy extraction and prediction device of claim 2 wherein the end cap and the housing are threadably connected by a plurality of bolts.
4. The seismic energy extraction and prediction device of claim 2 wherein the DC-DC conversion module is connected to the ground pre-warning device by wires passing through the wire holes.
5. The apparatus according to claim 1, wherein the rectifying module comprises a rectifying bridge, the 1 st end of the rectifying bridge is connected to the positive electrode of the piezoelectric plate, the 2 nd end of the rectifying bridge is connected to the energy storage module and the ground, the 3 rd end of the rectifying bridge is connected to the negative electrode of the piezoelectric plate, and the 4 th end of the rectifying bridge is connected to the energy storage module.
6. The seismic energy extraction and prediction device of claim 5, wherein the energy storage module comprises an energy storage capacitor, one end of the energy storage capacitor is connected to the 4 th end of the rectifier bridge and the DC-DC conversion module, and the other end of the energy storage capacitor is connected to the 2 nd end and the ground end of the rectifier bridge.
7. The device for extracting seismic energy and predicting an earthquake according to claim 6, wherein the DC-DC conversion module comprises a first capacitor, a second capacitor, a resistor, a voltage stabilizing diode and a voltage boosting chip, one end of the first capacitor is connected with one end of the energy storage capacitor and one end of the resistor, the other end of the first capacitor is connected with a ground terminal, the other end of the resistor is connected with a pin 1 of the voltage boosting chip and an anode of the voltage stabilizing diode, a pin 2 of the voltage boosting chip is connected with a cathode of the voltage stabilizing diode, one end of the second capacitor and the ground early warning device, a pin 3 of the voltage boosting chip is connected with the ground early warning device, and the other end of the second capacitor is grounded.
8. The device for absorbing seismic energy and predicting the earthquake as claimed in claim 7, wherein the ground early warning device comprises an external power supply, a current sensing switch and a buzzer, wherein the positive pole of the external power supply is connected with one end of the buzzer, the negative pole of the external power supply is connected with the 1 st pin of the current sensing switch, the other end of the buzzer is connected with the 2 nd pin of the current sensing switch, the 3 rd pin of the current sensing switch is connected with the 2 nd pin of the boost chip, and the 4 th pin of the current sensing switch is connected with the 3 rd pin of the boost chip.
9. The seismic energy extraction and prediction device of claim 7 wherein the booster chip is of the type CS 5173.
10. The seismic energy extraction and prediction device of claim 8 wherein the current sensing switch is model D200K.
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Application publication date: 20200609 |