Consolidated velocity microseismic sensor and monitoring method

Abstract

The application provides a combined velocity microseismic sensor and a monitoring method, wherein the combined velocity microseismic sensor comprises a sensor and a processing circuit, the processing circuit comprises a squarer, an adder, a square root generator, a multiplier, a multiplexer and a voltage comparator, the squarer is electrically connected with the sensor and the adder respectively, the adder is electrically connected with the squarer and the square root generator respectively, the multiplexer is electrically connected with the sensor and the voltage comparator respectively, and the multiplier is electrically connected with the voltage comparator and the square root generator respectively. The processing circuit obtains a combined velocity microseismic analog voltage signal according to a microseismic signal obtained by the sensor, and can know parameters such as a real vibration velocity of a microseismic waveform according to identification and analysis of the combined velocity microseismic analog voltage signal, so that the monitoring of microseismic vibration generated by a rock mass is realized.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and more particularly to a resultant velocity micro-vibration sensor and monitoring method. Background Technology

[0002] Deep rock engineering faces the threat of engineering disasters such as rockbursts. Microseismic monitoring, by collecting and processing deep rock mass fracture signals, can determine the time, location and scale of rock mass failure, and is an effective means of early warning and prevention of rockburst disasters.

[0003] Microseismic monitoring typically involves microseismic sensors converting rock fracture signals into electrical signals, which are then transmitted via wired or wireless means to a signal acquisition device and finally sent to a server for further processing.

[0004] Currently, microseismic sensors are divided into two types: unidirectional microseismic sensors and tridirectional microseismic sensors. Although unidirectional microseismic sensors have the advantages of simple installation and occupying few channels, they can only receive vibration signals in the rock mass that are aligned with the axis of the microseismic sensor or receive the vibration component of the vibration signal in the axis of the microseismic sensor. The values ​​are often smaller than the actual values, the signal-to-noise ratio is low, and they cannot reflect the true vibration situation, which increases the risk of on-site construction. Tridirectional microseismic sensors, based on unidirectional sensors, increase the number of sensors to achieve the function of simultaneously receiving rock mass vibration signals from three mutually perpendicular directions. Only one tridirectional microseismic sensor is needed to locate microseismic events, but it occupies more channels, requires accurate orientation and angle during installation, and the calculation process is complex.

[0005] Therefore, it is necessary to develop a microseismic sensor that can accurately reflect the actual vibration within the rock mass and features easy installation, simple calculation, and high precision. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a resultant velocity microseismic sensor and monitoring method. This invention mainly utilizes three mutually perpendicular sensors to receive microseismic signals from the rock mass. Each sensor receives the component of the microseismic signal along its own extension direction. The three components are processed by a processing circuit to obtain a resultant velocity microseismic analog voltage signal. By monitoring the changes in the resultant velocity microseismic analog voltage signal, the actual vibration velocity and other changes in the microseismic waveform can be obtained.

[0007] The technical means employed in this invention are as follows:

[0008] On one hand, the present invention provides a resultant velocity micro-vibration sensor, comprising:

[0009] sensor;

[0010] The processing circuit includes a squarer, an adder, a square root extractor, a multiplier, a multiplexer, and a voltage comparator. The squarer is electrically connected to the sensor and the adder, respectively; the adder is electrically connected to the squarer and the square root extractor, respectively; the multiplexer is electrically connected to the sensor and the voltage comparator, respectively; and the multiplier is electrically connected to the voltage comparator and the square root extractor, respectively.

[0011] Furthermore, the sensor includes: a first sensor for receiving a first component of the micro-vibration signal along a first direction; a second sensor for receiving a second component of the micro-vibration signal along a second direction; and a third sensor for receiving a third component of the micro-vibration signal along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0012] The multiplexer is electrically connected to the first sensor, the second sensor, and the third sensor, respectively.

[0013] The squarer is electrically connected to the first sensor, the second sensor, and the third sensor, respectively.

[0014] Furthermore, the squarer includes a first squarer, a second squarer, and a third squarer, and the adder includes a first adder and a second adder;

[0015] The first squarer is electrically connected to the first sensor and the first adder, respectively.

[0016] The second squarer is electrically connected to the second sensor and the first adder, respectively.

[0017] The third squarer is electrically connected to the third sensor and the second adder, respectively.

[0018] The first adder is electrically connected to the first squarer, the second squarer, and the second adder, respectively;

[0019] The second adder is electrically connected to the third squarer, the first adder, and the square root extractor.

[0020] Furthermore, the first squarer, the second squarer, and the third squarer are all model AD633JNZ.

[0021] Furthermore, both the first adder and the second adder are model XD74LS283.

[0022] Furthermore, the square root extractor is model FCM32F030K6T6.

[0023] Furthermore, the multiplier is model AD835ARZ.

[0024] Furthermore, the multiplexer is model CD4053BE.

[0025] Furthermore, the voltage comparator is model LM311PWR.

[0026] On the other hand, the present invention also provides a method for monitoring resultant velocity microseismic sensors, which employs the aforementioned resultant velocity microseismic sensor and includes:

[0027] The first sensor receives the first component of the micro-vibration signal along the first direction, the second sensor receives the second component of the micro-vibration signal along the second direction, and the third sensor receives the third component of the micro-vibration signal along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0028] The first sensor transmits the first component to the first squarer and the multiplexer respectively; the second sensor transmits the second component to the second squarer and the multiplexer respectively; the third sensor transmits the third component to the third squarer and the multiplexer respectively.

[0029] The first squarer obtains the first squared signal based on the first component and transmits it to the first adder; the second squarer obtains the second squared signal based on the second component and transmits it to the first adder; the third squarer obtains the third squared signal based on the third component and transmits it to the second adder.

[0030] The first adder obtains the first sum of squares signal based on the first square signal and the second square signal and transmits it to the second adder. The second adder obtains the second sum of squares signal based on the first sum of squares signal and the third square signal and transmits it to the square root extractor.

[0031] The square root extractor obtains the absolute value of the sum of squares signal based on the second sum of squares signal and transmits it to the multiplier.

[0032] The multiplexer obtains the maximum voltage signal based on the first component, the second component, and the third component, and transmits it to the voltage comparator.

[0033] The voltage comparator obtains the level signal based on the maximum voltage signal and transmits it to the multiplier;

[0034] The multiplier obtains the resultant velocity micro-vibration analog voltage signal based on the resultant velocity absolute value signal and the level signal.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. The resultant velocity microseismic sensor and monitoring method provided by the present invention are not limited by angle and direction, are easy to install, require little workload, and are suitable for the construction environment of deep rock engineering.

[0037] 2. The combined velocity microseismic sensor and monitoring method provided by this invention realizes high-precision acquisition of microseismic signals in all directions within the rock mass, which helps to obtain the true vibration velocity of the microseismic signals more accurately.

[0038] 3. The resultant velocity microseismic sensor and monitoring method provided by this invention are compatible with the acquisition and processing system of unidirectional microseismic sensors, with mature supporting technologies and low development and application costs. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of a resultant velocity micro-vibration sensor provided by the present invention.

[0041] Figure 2 This is a waveform of the X-direction component of a rock fracture signal received by a three-dimensional sensor.

[0042] Figure 3 This is a waveform of the Y-direction component of a rock fracture signal received by a three-dimensional sensor.

[0043] Figure 4 This is a waveform of the Z-direction component of a rock fracture signal received by a triaxial sensor.

[0044] Figure 5 The waveform of the rock fracture signal received by the combined velocity microseismic sensor provided by the present invention is shown.

[0045] In the diagram: 1. Sensor; 2. Processing circuit; 3. Squarer; 4. Adder; 5. Square root extractor; 6. Multiplier; 7. Multiplexer; 8. Voltage comparator; 9. First sensor; 10. Second sensor; 11. Third sensor; 12. First squarer; 13. Second squarer; 14. Third squarer; 15. First adder; 16. Second adder. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0050] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0053] Reference Figure 1 , Figure 1 This is a schematic diagram illustrating the structure of the resultant velocity microseismic sensor provided by the present invention, to illustrate a specific embodiment of the resultant velocity microseismic sensor 000 provided by the present invention, including:

[0054] Sensor 1;

[0055] The processing circuit 2 includes a squarer 3, an adder 4, a square root extractor 5, a multiplier 6, a multiplexer 7, and a voltage comparator 8. The squarer 3 is electrically connected to the sensor 1 and the adder 4 respectively; the adder 4 is electrically connected to the squarer 3 and the square root extractor 5 respectively; the multiplexer 7 is electrically connected to the sensor 1 and the voltage comparator 8 respectively; and the multiplier 6 is electrically connected to the voltage comparator 8 and the square root extractor 5 respectively.

[0056] It is understood that the squarer 3, adder 4, square root extractor 5, multiplier 6, multiplexer 7, and voltage comparator 8 used in this invention are all existing technologies. The sensor 1 acquires the micro-seismic signal of the rock mass and transmits it to the processing circuit 2. The squarer 3, adder 4, square root extractor 5, multiplier 6, multiplexer 7, and voltage comparator in the processing circuit 2 perform collaborative calculations based on the micro-seismic signal to obtain the resultant velocity micro-seismic simulated voltage signal. Based on the identification and analysis of the resultant velocity micro-seismic simulated voltage signal, parameters such as the actual vibration velocity of the micro-seismic waveform can be known. Therefore, by monitoring the change of the resultant velocity micro-seismic simulated voltage signal, the micro-vibration generated by the rock mass can be monitored. Moreover, the technology supporting the resultant velocity micro-seismic sensor 000 provided in this embodiment is mature and has low development and application costs.

[0057] In some alternative embodiments, reference continues to be made to... Figure 1 Sensor 1 includes: a first sensor 9, which receives the first component of the micro-vibration signal along a first direction; a second sensor 10, which receives the second component of the micro-vibration signal along a second direction; and a third sensor 11, which receives the third component of the micro-vibration signal along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0058] The multiplexer 7 is electrically connected to the first sensor 9, the second sensor 10, and the third sensor 11, respectively.

[0059] The squarer 3 is electrically connected to the first sensor 9, the second sensor 10, and the third sensor 11, respectively.

[0060] It is understandable that the directions of the receiving components of the first sensor 9, the second sensor 10, and the third sensor 11 are perpendicular to each other, so that the sensor 1 is not limited by angle and direction, which makes it easy to install, requires less work, and is suitable for the construction environment of deep rock engineering. Moreover, the first sensor 9, the second sensor 10, and the third sensor 11 realize high-precision acquisition of microseismic signals in all directions within the rock mass, which helps to obtain the true vibration velocity of the microseismic signals more accurately.

[0061] In some alternative embodiments, reference continues to be made to... Figure 1 The squarer 3 includes a first squarer 12, a second squarer 13 and a third squarer 14, and the adder 4 includes a first adder 15 and a second adder 16.

[0062] The first squarer 12 is electrically connected to the first sensor 9 and the first adder 15 respectively;

[0063] The second squarer 13 is electrically connected to the second sensor 10 and the first adder 15 respectively;

[0064] The third squarer 14 is electrically connected to the third sensor 11 and the second adder 16 respectively;

[0065] The first adder 15 is electrically connected to the first squarer 12, the second squarer 13, and the second adder 16, respectively.

[0066] The second adder 16 is electrically connected to the third squarer 14, the first adder 15, and the square root extractor 5, respectively.

[0067] Understandably, the first sensor 9 receives the first component V1 of the micro-vibration signal along the first direction and transmits it to the first squarer 12; the second sensor 10 receives the second component V2 of the micro-vibration signal along the second direction and transmits it to the second squarer 13; the third sensor 11 receives the third component V3 of the micro-vibration signal along the third direction and transmits it to the third squarer 14; the first squarer 12 obtains the first squared signal V1 based on the first component V1.2 The signal is then transmitted to the first adder 15, and the second squarer 13 obtains the second squared signal V2 based on the second component V2. 2 The signal is then transmitted to the first adder 15, and the third squarer 14 obtains the third squared signal V3 based on the third component V3. 2 And transmit to the second adder 16; the first adder 15 according to the first squared signal V1 2 Second square signal V2 2 The first sum of squares signal (V1) is obtained. 2 +V2 2 The signal is transmitted to the second adder 16, which in turn transmits the signal according to the first sum of squares signal (V1). 2 +V2 2 ) and the third square signal V3 2 The second sum of squares signal is obtained [(V1)] 2 +V2 2 )+V3 2 ] and transmit to square root extractor 5; square root extractor 5, based on the second sum of squares signal [(V1 2 +V2 2 )+V3 2 Obtain the absolute value signal of the resultant velocity. The signal is transmitted to multiplier 6; first sensor 9 receives the first component V1 of the micro-vibration signal along the first direction and transmits it to multiplexer 7; second sensor 10 receives the second component V2 of the micro-vibration signal along the second direction and transmits it to multiplexer 7; third sensor 11 receives the third component V3 of the micro-vibration signal along the third direction and transmits it to multiplexer 7. V1, V2, and V3 are all voltage signals. Multiplexer 7 selects the voltage signal with the largest absolute value among V1, V2, and V3 as the maximum voltage signal V. max The signal is transmitted to voltage comparator 8; voltage comparator 8 determines the voltage based on the maximum voltage signal V. max The output level signal α is transmitted to multiplier 6. Specifically, voltage comparator 8 is set with a preset voltage threshold. When the maximum voltage signal V... max When the voltage value is not lower than the preset voltage threshold, the voltage comparator 8 outputs a high-level voltage signal α (logic voltage is 1). When the maximum voltage signal V... max When the voltage value is lower than the preset voltage threshold, the voltage comparator 8 outputs a low-level voltage signal α (logic voltage -1); finally, the multiplication... The numerical value and sign are consistent with the actual microseismic signal. Optionally, the output value of the resultant velocity microseismic analog voltage signal can be analyzed by the signal acquisition device.

[0068] In some optional embodiments, the first squarer, the second squarer, and the third squarer are all model AD633JNZ.

[0069] Both the first and second adders are model XD74LS283.

[0070] The square root extractor is model FCM32F030K6T6.

[0071] The multiplier model is AD835ARZ.

[0072] The multiplexer model is CD4053BE.

[0073] The voltage comparator is model LM311PWR.

[0074] Based on the same inventive concept, and referring to Figures 1 to 5 , Figure 1 This is a schematic diagram of a resultant velocity micro-vibration sensor provided by the present invention. Figures 2 to 4 The image shows the waveforms of rock fracture signals received by a three-dimensional sensor in the X, Y, and Z directions. Figure 5 The waveform of the rock fracture signal received by the resultant velocity microseismic sensor provided by the present invention is shown to illustrate a specific embodiment of the monitoring method of the resultant velocity microseismic sensor 000 provided by the present invention. The resultant velocity microseismic sensor 000 includes:

[0075] The first sensor 9 receives the first component V1 of the micro-vibration signal along the first direction, the second sensor 10 receives the second component V2 of the micro-vibration signal along the second direction, and the third sensor 11 receives the third component V3 of the micro-vibration signal along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0076] The first sensor 9 transmits the first component V1 to the first squarer 12 and the multiplexer 7 respectively; the second sensor 10 transmits the second component V2 to the second squarer 13 and the multiplexer 7 respectively; the third sensor 11 transmits the third component V3 to the third squarer 14 and the multiplexer 7 respectively.

[0077] The first squarer 12 obtains the first squared signal V1 based on the first component V1. 2 The signal is then transmitted to the first adder 15, and the second squarer 13 obtains the second squared signal V2 based on the second component V2. 2 The signal is then transmitted to the first adder 15, and the third squarer 14 obtains the third squared signal V3 based on the third component V3. 2 And transmit it to the second adder 16;

[0078] The first adder 15 calculates the first squared signal V1. 2 Second square signal V2 2 The first sum of squares signal (V1) is obtained. 2 +V2 2The signal is transmitted to the second adder 16, which in turn transmits the signal according to the first sum of squares signal (V1). 2 +V2 2 ) and the third square signal V3 2 The second sum of squares signal is obtained [(V1)] 2 +V2 2 )+V3 2 And transmit it to square root extractor 5;

[0079] Square root extractor 5 is based on the second sum of squares signal [(V1)] 2 +V2 2 )+V3 2 Obtain the absolute value signal of the resultant velocity. And transmit it to multiplier 6;

[0080] Multiplexer 7 obtains the maximum voltage signal V based on the first component V1, the second component V2, and the third component V3. max And transmit to voltage comparator 8;

[0081] Voltage comparator 8 is based on the maximum voltage signal V max The level signal α is obtained and transmitted to multiplier 6;

[0082] Multiplier 6 is based on the absolute value signal of the resultant velocity. The resultant velocity is obtained from the level signal α and the simulated voltage signal V of the micro-vibration. out Based on the resultant velocity micro-vibration simulated voltage signal V out The identification and analysis can reveal parameters such as the actual vibration velocity of the micro-vibration waveform. Therefore, by monitoring the resultant velocity micro-vibration analog voltage signal V... out The changes can enable the monitoring of micro-vibrations generated in the rock mass.

[0083] Reference Figures 2 to 5 , Figures 2 to 5 The signals shown are all from the same rupture event, which indicates that... Figure 3 and Figure 5 The signal range received by the microseismic sensor is greater than Figure 2 and Figure 4 The signal range received by the microseismic sensor, especially the resultant velocity microseismic sensor 000 provided in this embodiment, has the largest signal range, even... Figure 3 The triaxial microseismic sensor shown receives twice the range of the Y-direction component signal, demonstrating good performance.

[0084] As can be seen from the above, the main feature of the resultant velocity microseismic sensor 000 and monitoring method provided by this invention is that the processing circuit 2 converts the microseismic signals from the three sensors into a resultant velocity microseismic analog voltage signal. By monitoring the changes in the resultant velocity microseismic analog voltage signal, the micro-vibrations generated in the rock mass can be monitored. Furthermore, the installation of the resultant velocity microseismic sensor 000 provided by this invention is not limited by angle or direction, making installation simple and requiring minimal workload. It achieves high-precision acquisition of microseismic signals in all directions within the rock mass, can obtain the true vibration velocity of the microseismic signals, is compatible with the acquisition and processing system of unidirectional microseismic sensors, has mature supporting technologies, low development and application costs, and has high engineering practical value.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for monitoring resultant velocity microseismic sensors, characterized in that, include: The first sensor receives the first component of the micro-vibration signal along a first direction, the second sensor receives the second component of the micro-vibration signal along a second direction, and the third sensor receives the third component of the micro-vibration signal along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other. The first sensor transmits the first component to the first squarer and the multiplexer respectively; the second sensor transmits the second component to the second squarer and the multiplexer respectively; the third sensor transmits the third component to the third squarer and the multiplexer respectively. The first squarer obtains a first squared signal based on the first component and transmits it to the first adder; the second squarer obtains a second squared signal based on the second component and transmits it to the first adder; the third squarer obtains a third squared signal based on the third component and transmits it to the second adder. The first adder obtains a first sum of squares signal based on the first square signal and the second square signal and transmits it to the second adder. The second adder obtains a second sum of squares signal based on the first sum of squares signal and the third square signal and transmits it to the square root extractor. The square root extractor obtains the absolute value signal of the sum of squares based on the second sum of squares signal and transmits it to the multiplier. The multiplexer obtains the maximum voltage signal based on the first component, the second component, and the third component, and transmits it to the voltage comparator. The voltage comparator obtains a level signal based on the maximum voltage signal and transmits it to the multiplier; The multiplier obtains the resultant velocity micro-vibration analog voltage signal based on the resultant velocity absolute value signal and the level signal; The resultant velocity microseismic sensor, implemented based on the resultant velocity microseismic sensor monitoring method, includes: The sensor includes: a first sensor for receiving a first component of a micro-vibration signal along a first direction; a second sensor for receiving a second component of the micro-vibration signal along a second direction; and a third sensor for receiving a third component of the micro-vibration signal along a third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular. The processing circuit includes a squarer, an adder, a square root extractor, a multiplier, a multiplexer, and a voltage comparator. The squarer is electrically connected to the sensor and the adder, respectively; the adder is electrically connected to the squarer and the square root extractor, respectively; the multiplexer is electrically connected to the sensor and the voltage comparator, respectively; and the multiplier is electrically connected to the voltage comparator and the square root extractor, respectively. The multiplexer is electrically connected to the first sensor, the second sensor, and the third sensor, respectively; The squarer is electrically connected to the first sensor, the second sensor, and the third sensor, respectively; The squarer includes a first squarer, a second squarer, and a third squarer, and the adder includes a first adder and a second adder; The first squarer is electrically connected to the first sensor and the first adder, respectively; The second squarer is electrically connected to the second sensor and the first adder, respectively; The third squarer is electrically connected to the third sensor and the second adder, respectively. The first adder is electrically connected to the first squarer, the second squarer, and the second adder, respectively; The second adder is electrically connected to the third squarer, the first adder, and the square root extractor, respectively.

2. The resultant velocity microseismic sensor monitoring method according to claim 1, characterized in that, The first squarer, the second squarer, and the third squarer are all model AD633JNZ.

3. The resultant velocity microseismic sensor monitoring method according to claim 1, characterized in that, Both the first adder and the second adder are model XD74LS283.

4. The resultant velocity microseismic sensor monitoring method according to claim 1, characterized in that, The square root extractor is model FCM32F030K6T6.

5. The resultant velocity microseismic sensor monitoring method according to claim 1, characterized in that, The multiplier is model AD835ARZ.

6. The resultant velocity microseismic sensor monitoring method according to claim 1, characterized in that, The multiplexer is model CD4053BE.

7. The resultant velocity microseismic sensor monitoring method according to claim 1, characterized in that, The voltage comparator is model LM311PWR.

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