CN111816204B - Three-component pickup system - Google Patents
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- G—PHYSICS
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
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Abstract
The invention provides a three-component sound pickup system, comprising: a three-component pickup sensor and processing means; the three-component pickup sensor is used for acquiring microseismic signals generated by the coal rock mass in three directions which are vertical to each other; the processing device includes: the database unit is used for establishing a microseismic event database; the identification unit is used for receiving the microseismic signals and respectively recording a plurality of waveform period data of the microseismic signals in each direction; the calculating unit is used for calculating the wave peak energy value and the wave trough energy value of the microseismic signal in each direction, and calculating the position and the energy of the microseismic event according to the wave peak energy value and the wave trough energy value to obtain the three-dimensional coordinate and the energy distribution of the microseismic event; the matching unit is used for extracting an emergency plan in the microseismic database unit according to the three-dimensional coordinate and the energy distribution of the microseismic event; the method has the beneficial effects of improving the sound pickup precision and the energy calculation accuracy, and is suitable for the field of coal mine safety production.
Description
Technical Field
The invention relates to the technical field of coal mine safety production, in particular to a three-component pickup system.
Background
Mine earthquake is mine earthquake induced by mining, when the mine earthquake occurs, surrounding rocks quickly release energy, coal rocks are instantaneously and suddenly destroyed, and strong impact airflow can be formed, so that disasters such as roof fall, rib spalling, support breakage, roadway blockage, ground vibration, house damage, personal injury and death are caused.
In recent years, a microseismic monitoring technology is rapidly developed and widely applied to domestic and foreign mines, and becomes an important means for monitoring the energy of coal and rock masses of coal mines, however, the positioning accuracy of the existing microseismic sensor is difficult to further improve no matter the existing microseismic sensor is a single-component sensor or a three-component sensor, and the accuracy of real-time positioning cannot be effectively verified in real time.
Disclosure of Invention
Aiming at the defects in the related technology, the technical problem to be solved by the invention is as follows: provided is a three-component sound pickup system capable of improving sound pickup accuracy and energy calculation accuracy.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a three-component sound pickup system comprising: the system comprises a three-component pickup sensor and a processing device which is in communication connection with the three-component pickup sensor;
the three-component pickup sensor is used for acquiring microseismic signals generated by the coal rock mass in three directions which are vertical to each other;
the processing device is used for analyzing the micro-seismic signals, identifying waveform data, judging the micro-seismic type of the coal rock mass and outputting early warning signals.
Preferably, the processing means comprises:
a database unit for establishing a microseismic event database, the microseismic event database comprising: the system comprises a microseismic type, waveform data corresponding to the microseismic type, and emergency plans corresponding to the microseismic type and the waveform data respectively;
the identification unit is used for receiving the microseismic signals and respectively recording a plurality of waveform period data of the microseismic signals in each direction;
the calculating unit is used for calculating the wave peak energy value and the wave trough energy value of the microseismic signal in each direction, and calculating the position and the energy of the microseismic event according to the wave peak energy value and the wave trough energy value to obtain the three-dimensional coordinate and the energy distribution of the microseismic event;
the matching unit is used for extracting an emergency plan in the microseismic database unit according to the three-dimensional coordinate and the energy distribution of the microseismic event;
and the early warning unit is used for issuing an emergency plan.
Preferably, the three-component pickup sensor includes:
the pickup probe is used for collecting sound signals in three directions which are vertical to each other according to the control signal;
the signal processing module is used for filtering, denoising and signal amplifying the sound signals picked up by the pickup probe and outputting modified effective sound signals;
the control module is used for receiving an external start-stop control instruction, enabling the power supply module to be in a working mode or a low power consumption mode, receiving an effective sound signal and sending the effective sound signal to the processing device;
the power supply module is used for supplying power to the control module and the communication module in a low power consumption mode and supplying power to the whole pickup sensor in a working mode;
and the communication module is bidirectionally connected with the control module and is used for being responsible for the network communication of the whole pickup sensor.
Preferably, the pickup probe comprises: first pickup part, second pickup part and third pickup part that mutually perpendicular set up in three orientation.
Preferably, the power supply module includes: power supply converting circuit and power start-stop control circuit, power supply converting circuit's output links to each other with external power input connector, power supply converting circuit includes: a 5V power supply output terminal and a 3.3V power supply output terminal;
the input end of the power supply start-stop control circuit is connected with the start-stop control instruction output end of the control module, and the control end of the power supply start-stop control circuit is connected in series with a connecting line between the 5V power supply output end and the 3.3V power supply output end.
Preferably, the circuit structure of the power supply start-stop control circuit is as follows: the method comprises the following steps: the power supply circuit comprises a triode Q1 and a field-effect tube Q2, wherein the base electrode of the triode Q1 is respectively connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is connected with a start-stop control instruction output end GPIO1 of the control module, the other end of the resistor R2 is grounded, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with one end of a resistor R4 and the G electrode of the field-effect tube Q2 after being connected with the resistor R3 in series, the S electrode of the field-effect tube Q2 is connected with the other end of the resistor R4, the cathode of a diode D2 and the control end of the power supply start-stop control circuit, and the anode of the diode D2 is connected with the D electrode of the field-effect tube Q2 and the 3.3V power supply end of the power supply conversion circuit.
Preferably, the circuit structure of the power conversion circuit is: the method comprises the following steps: the chip U1, the input VIN of chip U1 links to each other with 5V power output end, the one end of resistance R6, the one end of electric capacity C1, external power input joint respectively, the other end ground connection of electric capacity C1, the other end of resistance R6 links to each other with diode D1's positive pole, the back ground connection is connected with the earthing terminal of chip U1, the one end of electric capacity C7, the one end of electric capacity C8 respectively to diode D1's negative pole, the other end of electric capacity C7 links to each other with the output OUT of chip U1, the one end of electric capacity C8, the control end that the power stopped control circuit.
Preferably, the chip U1 has a model number of ASM 1117.
The invention has the beneficial technical effects that:
1. according to the three-component pickup system, the microseismic signals generated by coal and rock masses in three mutually perpendicular directions are acquired through the three-component pickup sensor, the characteristics of waveform data are identified through the processing device, the microseismic type is judged according to the waveform characteristics, and the early warning signal is issued, so that the safety of underground operation is greatly improved; meanwhile, the sound pickup range of the pickup sensor can be effectively enlarged by picking up the sound signals in three directions, the purpose of facilitating the decomposition and synthesis of the signals can be achieved, the precision of sound pickup is improved, and the practicability is strong.
2. The three-component pickup sensor has a simple structure, is convenient to use, and during the period of production stoppage and shutdown, the control module receives an external stop instruction to enable the power module of the three-component pickup sensor to be in a low power consumption mode, and the power module provides power supply for the control module and the communication module; when the control module receives an external starting instruction, the control module outputs a control signal to enable the power supply module to be converted into a working mode, and power supply is provided for the whole three-component pickup sensor; under operating mode, the sound signals on the three direction of pickup probe collection mutually perpendicular and send to signal processing module and handle, signal processing module to the sound signals that pickup probe picked up filter, fall and make an uproar, signal amplification, the effective sound signal after the output modification, control module receives effective sound signal, send effective sound signal to ground playback devices and supply the staff to refer to, can open and stop the instruction after receiving the outside through control module, control power module's output, for pickup probe and signal processing module power supply, can effectively reduce the consumption of three-component pickup sensor.
3. In the invention, a power supply conversion circuit inputs a +5V power supply through an input connector J1 to supply power for a control module and a communication module, the power supply conversion circuit converts the +5V power supply voltage into a 3.3V voltage to supply power for a pickup probe, wherein: the start-stop control instruction output end GPIO1 of the control module controls the power supply start-stop control circuit to further control the on-off of the power supply conversion circuit, and therefore switching of the power supply module between the working mode and the low power consumption mode is achieved.
Drawings
Fig. 1 is a schematic circuit structure diagram of a three-component sound pickup system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a three-component pickup sensor according to a second embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a three-component pickup sensor according to a second embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a power module according to a third embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a pickup probe according to a third embodiment of the present invention;
in the figure: 1 is a three-component pickup sensor, 2 is a processing device, and 3 is a shell;
the system comprises a sound pickup probe 11, a signal processing module 12, a control module 13, a power supply module 14 and a communication module 15, wherein the sound pickup probe is arranged on the sound pickup probe;
21 is a database unit, 22 is an identification unit, 23 is a calculation unit, 24 is a matching unit, and 25 is an early warning unit;
31 is an outlet hole, 32 is a wiring hole, 34 is a cable connector, 35 is a mounting base, and 36 is a circuit board;
111 is a first sound pickup part, 112 is a second sound pickup part, and 113 is a third sound pickup part;
141 is a power conversion circuit, and 142 is a power on-off control circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
An embodiment of the present invention is described in detail below with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic circuit structure diagram of a three-component sound pickup system according to an embodiment of the present invention, and as shown in fig. 1, a three-component sound pickup system includes: a three-component sound pickup sensor 1, and a sum processing device 2 communicatively connected to the three-component sound pickup sensor 1;
the three-component pickup sensor 1 is used for acquiring microseismic signals generated by coal and rock masses in three directions which are perpendicular to each other;
and the processing device 2 is used for analyzing the micro-seismic signals, identifying waveform data, judging the micro-seismic type of the coal rock mass and outputting early warning signals.
Specifically, the processing device 2 includes:
a database unit 21 configured to establish a microseismic event database, the microseismic event database including: the system comprises a microseismic type, waveform data corresponding to the microseismic type, and emergency plans corresponding to the microseismic type and the waveform data respectively;
the identification unit 22 is used for receiving the microseismic signals and respectively recording a plurality of waveform period data of the microseismic signals in each direction;
the calculating unit 23 is used for calculating a wave peak energy value and a wave trough energy value of the microseismic signal in each direction, and calculating the position and the energy of the microseismic event according to the wave peak energy value and the wave trough energy value to obtain the three-dimensional coordinate and the energy distribution of the microseismic event;
the matching unit 24 is used for extracting an emergency plan in the microseismic database unit according to the three-dimensional coordinates and the energy distribution of the microseismic event;
and the early warning unit 25 is used for issuing an emergency plan.
In the embodiment, a microseismic event database is established according to the actual mining process and geological conditions of a coal mine, the coal mining activity is subjected to numerical analysis firstly and is used as an arrangement area for microseismic monitoring, the microseismic monitoring comprises a plurality of three-component pickup sensors 1, and each three-component pickup sensor 1 is in communication connection with a processing device 2 arranged on the ground, so that ground workers can know the activity information of a coal stratum in time; the microseismic event database can establish event information of various microseismic sources and emergency plans corresponding to each microseismic source by summarizing waveform data and energy data, realizes timely and effective guidance of evacuation of underground operators, and has high safety.
Specifically, the invention obtains microseismic signals generated by coal and rock masses in three directions which are perpendicular to each other through the three-component pickup sensor, identifies the characteristics of waveform data through the processing device, judges the microseismic type according to the waveform characteristics, and issues an early warning signal, thereby greatly improving the safety of underground operation; meanwhile, the invention can effectively increase the pickup range of the pickup sensor by picking up the sound signals in three directions, and can achieve the purpose of convenient decomposition and synthesis of the signals, thereby improving the precision of sound pickup and having strong practicability.
Example two
Fig. 2 is a schematic structural diagram of a three-component pickup sensor according to a second embodiment of the present invention, and fig. 3 is a schematic circuit structural diagram of the three-component pickup sensor according to the second embodiment of the present invention; as shown in fig. 2 and 3, in addition to the first embodiment, a three-component sound pickup system includes: the pickup probe 11 is used for collecting sound signals in three directions which are vertical to each other according to the control signal; the signal processing module 12 is configured to filter, reduce noise, amplify a signal of the sound signal picked up by the pickup probe 11, and output a modified effective sound signal; the control module 13 is configured to receive an external start-stop control instruction, enable the power module 14 to be in a working mode or a low power consumption mode, receive an effective sound signal, and send the effective sound signal to the processing apparatus 2; a power supply module 14 for supplying power to the control module 13 and the communication module 15 in a low power consumption mode, and for supplying power to the entire pickup sensor in an operation mode; and the communication module 15 is bidirectionally connected with the control module 13 and is used for taking charge of network communication of the whole pickup sensor.
Specifically, the pickup probe 11 includes: a first sound pickup section 111, a second sound pickup section 112, and a third sound pickup section 113 that are arranged in three directions perpendicular to each other.
The three-component sound pickup sensor 1 in the present embodiment further includes: the pickup probe comprises a shell 3, wherein a cable connector 34 is arranged on the shell 3, and the pickup probe 11 is arranged in the shell 3; the signal processing module 12, the control module 13, the power module 14 and the communication module 15 are all arranged on the circuit board 36; a first sound transmission hole, a second sound transmission hole and a third sound transmission hole are respectively formed in the positions, corresponding to the first sound pickup part 111, the second sound pickup part 112 and the third sound pickup part 113, on the shell 3; the contact surfaces of the first sound pickup part 111, the second sound pickup part 112 and the third sound pickup part 113 are provided with wire outlet holes 31, and the wire outlet end of the first sound pickup part 111, the wire outlet end of the second sound pickup part 112 and the wire outlet end of the third sound pickup part 113 are electrically connected with the circuit board 36 after passing through the wire outlet holes 31; a wiring hole 32 is arranged between the cable connector 34 and the shell 3; the wiring hole 32 is communicated with the wire outlet hole 31; the outlet end of the circuit board 36 is electrically connected with one end of the connector lug after passing through the outlet hole 31, and the other end of the cable connector 34 is electrically connected with the signal wire 33.
In this embodiment, the casing 3 is a cylindrical structure, the bottom of the casing 3 is provided with the mounting base 35, the casing 3 is a stainless steel casing, and the casing 3 is provided with a dustproof sound-transmitting net.
In this embodiment, the sound signals of the signal processing module 12 have a certain time delay due to the arrangement of the sound pickup components in three directions, and the signal processing module 12 can perform frequency domain conversion on the received sound signals of the sound pickup probe 11, calculate the phase difference of each frequency sub-band of the sound pickup component number, and calculate the relative time delay of each sound pickup component according to the phase difference; calculating the incident angle of the pickup part signal according to the relative delay of each frequency sub-band; according to incident angle carries out the statistics of target signal composition, distinguishes and obtains target signal composition and noise composition to carry out filtering processing to the noise, through arranging of three direction pickup part, make use of the pickup part directly to obtain the spatial orientation information of sound, make full use of orientation information more accurate control adaptive filter's update filtering, the fine protection speech signal of effective noise reduction while improves the pickup precision of three-component pickup sensor.
The three-component pickup sensor provided by the embodiment is used: during shutdown and production halt periods, the control module 13 receives an external stop instruction, so that the power module 14 of the three-component pickup sensor is in a low power consumption mode, and the power module 14 provides power supply for the control module 13 and the communication module 15; when the control module 13 receives an external start instruction, the control module 13 outputs a control signal to convert the power module 14 into a working mode, so as to provide power supply for the whole three-component pickup sensor; under operating mode, pickup probe 11 gathers the ascending sound signal of three direction of mutually perpendicular and sends and handles to signal processing module 12, signal processing module 12 carry out filtering, fall and make an uproar, signal amplification to the sound signal that pickup probe 11 picked up, the effective sound signal after the output is revised, control module 13 receives effective sound signal, sends effective sound signal to ground playback devices 6 and supplies the staff to refer to.
In this embodiment, after receiving an external start-stop instruction, the control module 13 can control the output of the power module 41 to supply power to the sound pickup probe 11 and the signal processing module 12, so that the power consumption of the three-component sound pickup sensor can be effectively reduced.
The signal processing module 12 in this embodiment can filter, reduce noise, amplify a signal of the sound signal picked up by the pickup probe 11, and output a modified effective sound signal, so that the back-end device can process the sound signal conveniently, and the anti-interference capability of each pickup unit is enhanced.
EXAMPLE III
Fig. 4 is a schematic circuit diagram of a power module according to a third embodiment of the present invention, and as shown in fig. 4, on the basis of the first embodiment, the power module 14 includes: power supply converting circuit 141 and power start-stop control circuit 142, the output and the input of power supply converting circuit 141 link to each other with external power input joint, power supply converting circuit 141 includes: a 5V power supply output end and a 3.3V power supply output end; the input end of the power supply start-stop control circuit 142 is connected with the start-stop control instruction output end of the control module 13, and the control end of the power supply start-stop control circuit 142 is connected in series with a connecting line between the 5V power supply output end and the 3.3V power supply output end.
Specifically, the circuit structure of the power supply start-stop control circuit 142 is: the method comprises the following steps: a triode Q1 and a field effect transistor Q2, a base of the triode Q1 is connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is connected with a start/stop control instruction output terminal GPIO1 of the control module 13, the other end of the resistor R2 is grounded, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with one end of a resistor R4 and a G electrode of a field effect transistor Q2 after being connected in series with a resistor R3, an S electrode of the field effect transistor Q2 is connected with the other end of a resistor R4, a cathode of a diode D2 and a control end of the power supply start/stop control circuit 142, and an anode of the diode D2 is connected with a D electrode of the field effect transistor Q2 and a 3.3V power supply end of the power supply conversion circuit 141.
In this embodiment, the power conversion circuit 141 inputs +5V power through the input connector J1 to supply power to the control module 13 and the communication module 15, and the power conversion circuit 141 converts +5V power voltage into 3.3V voltage to supply power to the pickup probe, wherein: the start-stop control instruction output terminal GPIO1 of the control module 13 controls the power supply start-stop control circuit 142 to further control the on/off of the power conversion circuit 141, thereby realizing the switching between the operating mode and the low power consumption mode of the power module 14.
In this embodiment, the transistor Q1 and the fet Q2 function as a switch, wherein: resistance R1 and resistance R2 can play the current-limiting effect, reduce triode Q1 and receive the influence of noise, when start-stop control instruction output GPIO1 is the low level, triode Q1 does not switch on, and field effect transistor Q2 does not switch on, when start-stop control instruction output GPIO1 is the high level, triode Q4 switches on, field effect transistor Q5 switches on, and mains voltage converts 3.3V output 3.3V power into.
Specifically, the circuit structure of the power conversion circuit 141 is: the method comprises the following steps: an input end VIN of the chip U1 is connected to a 5V power output end, one end of a resistor R6, one end of a capacitor C1, and an external power input connector, the other end of the capacitor C1 is grounded, the other end of the resistor R6 is connected to an anode of a diode D1, a cathode of the diode D1 is connected to a ground end of the chip U1, one end of the capacitor C7, and one end of the capacitor C8 and then grounded, the other end of the capacitor C7 is connected to an output end OUT of the chip U1, one end of the capacitor C8, and a control end of the power start-stop control circuit 142, the chip U1 is in the model of ASM1117, and the capacitor C7 and the capacitor C8 are output filter capacitors, so that output voltage ripples can be reduced and self-excited oscillation of the ASM1117 can be suppressed.
Fig. 5 is a schematic circuit diagram of a sound pickup probe according to a third embodiment of the present invention, in which the first sound pickup section 111, the second sound pickup section 112, and the third sound pickup section 113 have the same configuration, and the circuit of the first sound pickup section 111 is described below, taking the first sound pickup section 111 as an example:
the first sound pickup unit 111 includes: the microphone comprises a pickup MIC _1 and a bias voltage circuit, wherein a VDD end of the pickup MIC _1 is respectively connected with one end of a capacitor C11, one end of a capacitor C12 and one end of a resistor R1, the other end of the resistor R1 is respectively connected with one end of a capacitor C13 and a bias voltage input end MIC _ BAS1 of the first pickup part 31, the other end of the capacitor C11 is connected with the other end of a capacitor C12 in parallel and the other end of the capacitor C13 in parallel and then is grounded, a CLK end of the pickup MIC _1 is connected with a resistor R12 in series and then is connected with an input end CLK1 of the first pickup part 31, a DATA end of the pickup MIC _1 is connected with a resistor R12 in series and then is connected with an output end DATA1 of the first pickup part 31, and an L/R end of the pickup MIC _1 is connected with a 3.3V power supply end of a power supply conversion circuit 431.
In this embodiment, the sensitivity of the first sound pickup section 111 can be adjusted by changing the output amplitude of the first sound pickup section 31 by adjusting the bias voltage circuit.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the method, apparatus and system described above are referred to one another. In addition, "first", "second", and the like in the above embodiments are used to distinguish the embodiments, and do not represent merits of the embodiments.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the module described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. In addition, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. The above-described system embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, and for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A three-component sound pickup system characterized by: the method comprises the following steps: a three-component sound pickup sensor (1), and a sum processing device (2) which is connected with the three-component sound pickup sensor (1) in a communication way;
the three-component pickup sensor (1) is used for acquiring microseismic signals generated by the coal rock mass in three directions which are vertical to each other; the method comprises the following steps:
the pickup probe (11) is used for collecting sound signals in three directions which are vertical to each other according to the control signal;
the signal processing module (12) is used for filtering, denoising and signal amplifying the sound signals picked up by the pickup probe (11) and outputting modified effective sound signals;
the control module (13) is used for receiving an external start-stop control instruction, enabling the power supply module (14) to be in a working mode or a low-power consumption mode, receiving an effective sound signal and sending the effective sound signal to the processing device (2);
the power supply module (14) is used for supplying power to the control module (13) and the communication module (15) in a low power consumption mode and supplying power to the whole pickup sensor in a working mode; the method comprises the following steps:
power supply switching circuit (141) and power start-stop control circuit (142), the output and the external power supply input of power supply switching circuit (141) connect and link to each other, power supply switching circuit (141) include: a 5V power supply output end and a 3.3V power supply output end;
the input end of the power supply start-stop control circuit (142) is connected with the start-stop control instruction output end of the control module (42), and the control end of the power supply start-stop control circuit (142) is connected in series with a connecting line between the 5V power supply output end and the 3.3V power supply output end; the circuit structure of the power supply start-stop control circuit (142) is as follows: the method comprises the following steps: a triode Q1 and a field-effect tube Q2, wherein the base of the triode Q1 is respectively connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is connected with a start-stop control instruction output end GPIO1 of a control module (42), the other end of the resistor R2 is grounded, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with one end of the resistor R4 and the G pole of the field-effect tube Q2 after being connected with the resistor R3 in series, the S pole of the field-effect tube Q2 is connected with the other end of the resistor R4, the cathode of a diode D2 and the control end of a power supply start-stop control circuit (142), and the anode of the diode D2 is connected with the D pole of the field-effect tube Q2 and the 3.3V power supply end of a power supply conversion circuit (141);
the communication module (15) is bidirectionally connected with the control module (13) and is used for taking charge of the network communication of the whole pickup sensor;
and the processing device (2) is used for analyzing the micro-seismic signals, identifying waveform data, judging the micro-seismic type of the coal rock mass and outputting early warning signals.
2. The three-component sound pickup system of claim 1, wherein: the processing device (2) comprises:
a database unit (21) for building a microseismic event database, said microseismic event database comprising: the system comprises a microseismic type, waveform data corresponding to the microseismic type, and emergency plans corresponding to the microseismic type and the waveform data respectively;
the identification unit (22) is used for receiving the microseismic signals and respectively recording a plurality of waveform period data of the microseismic signals in each direction;
the calculating unit (23) is used for calculating the wave peak energy value and the wave trough energy value of the microseismic signal in each direction, and calculating the position and the energy of the microseismic event according to the wave peak energy value and the wave trough energy value to obtain the three-dimensional coordinate and the energy distribution of the microseismic event;
the matching unit (24) is used for extracting an emergency plan in the microseismic database unit according to the three-dimensional coordinate and the energy distribution of the microseismic event;
and the early warning unit (25) is used for issuing an emergency plan.
3. The three-component sound pickup system of claim 1, wherein: the pickup probe (11) includes: the first sound pickup part (111), the second sound pickup part (112) and the third sound pickup part (113) are arranged in three directions and are perpendicular to each other.
4. The three-component sound pickup system according to claim 1, wherein: the circuit structure of the power conversion circuit (141) is as follows: the method comprises the following steps: the power supply circuit comprises a chip U1, an input end VIN of the chip U1 is connected with a 5V power output end, one end of a resistor R6, one end of a capacitor C1 and an external power input connector respectively, the other end of the capacitor C1 is grounded, the other end of a resistor R6 is connected with an anode of a diode D1, a cathode of the diode D1 is connected with a grounding end of the chip U1, one end of the capacitor C7 and one end of a capacitor C8 and then grounded, and the other end of the capacitor C7 is connected with an output end OUT of the chip U1, one end of a capacitor C8 and a control end of the power supply start-stop control circuit (142) respectively.
5. The three-component sound pickup system according to claim 4, wherein: the model of the chip U1 is ASM 1117.
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