Infrasound audio vibration composite detection system and detection method

Abstract

The invention relates to an infrasound audio vibration composite detection system and a detection method. An acquisition module '1', an infrasound sensor '5', six microphones' 6 'and a vibration sensor' 7 'form the composite detection system. The acquisition module (1) transmits data acquired by the composite detection system to the controller (3), and the controller (3) stores the data in the storage module (11) and transmits the data to the calculation module (2). The calculation module (2) can also return a calculation result to the controller (3), and the calculation result is transmitted between the detection systems through the LR-WIFI module (8) and the 4G module (9), and is further transmitted to an upper-level server through the 4G module (9). According to the invention, long-distance signal detection and positioning can be carried out on an air sound source through three sensors, meanwhile, underground vibration signals can be recorded, and the target identification capability in a complex environment is improved.

Description

Technical Field

[0001] This invention belongs to the field of acoustics and vibration measurement technology, specifically relating to a composite detection system and method for infrasound audio vibration. Background Technology

[0002] Near-ground target detection in modern complex environments utilizes various methods, including electromagnetic fields, acoustic fields, vibration fields, and optics, but each method has its advantages and disadvantages. To enhance target detection capabilities, composite detection techniques combining multiple methods are generally employed. These typically improve target identification capabilities through acoustic-optical, acoustic-vibration, and acoustic-electromagnetic composite techniques. The principle behind these techniques is based on the differences in propagation characteristics and environmental interference effects of different physical fields. Usable signals are extracted from information such as signal energy, time domain, and spectrum, thereby addressing the false alarm and missed detection problems inherent in single detection methods. Summary of the Invention

[0003] This invention provides a composite detection system and method for infrasound and audio vibration. The technical problem to be solved is to improve the target recognition capability by increasing the spatial information dimension, thereby solving the problems of high false alarm and false negative rates in the existing technology.

[0004] To address the above technical problems, the present invention provides: 1. A composite detection system for infrasound audio vibration, characterized in that it comprises: Infrasound sensor (5), multiple audio microphones (6) and vibration sensor (7); The acquisition module (1) is used to synchronously acquire signals from the infrasound sensor (5), multiple audio microphones (6) and vibration sensor (7); The controller (3) is communicatively connected to the acquisition module (1) and is used to control the sampling rate, data storage and transmission; The calculation module (2) is used to process the collected data and output the recognition results; Storage module (11) is used to store the collected raw data and processing results; The communication module includes a 4G module (9) and an LR-WIFI module (8), which support data transmission and inter-node communication. The Beidou module (10) is used for system time calibration and location information acquisition; The power management module (4) is used to supply power to each module in the system and supports intelligent control of the power supply of the computing module (2).

[0005] Furthermore, there are six audio microphones (6) forming a microphone array for locating airborne sound sources; The infrasound sensor (5) is used for long-distance infrasound signal detection; The vibration sensor (7) is used to detect vibration waves propagating in the underground medium.

[0006] Furthermore, the controller (3) is configured to transmit the data collected by the acquisition module (1) to the computing module (2) for processing, and upload the processing results to the server via the 4G module (9) or the LR-WIFI module (8).

[0007] Furthermore, the LR-WIFI module (8) is configured to establish a relay communication link between a detection node without 4G signal and a detection node with 4G signal, thereby enabling multi-hop data transmission.

[0008] Furthermore, the Beidou module (10) is used to transmit time and location latitude and longitude information data to the controller (3). The controller (3) uses Beidou time to correct the system time on the one hand, and writes Beidou time and coordinate latitude and longitude information into the collected data file on the other hand.

[0009] Furthermore, the controller (3) controls the power supply of the computing module (2) according to its working state to reduce system power consumption.

[0010] A method for detecting infrasound audio vibration composite, characterized by comprising the following steps: The acquisition module (1) synchronously acquires signals from the infrasound sensor (5), the audio microphone array (6), and the vibration sensor (7); The collected data is transmitted to the controller (3) and stored in the storage module (11). The data is processed by the calculation module (2) to obtain the target recognition result; The processing results are uploaded to the server via the 4G module (9) or the LR-WIFI module (8); In nodes without 4G signal, data is relayed to nodes with 4G signal via LR-WIFI module (8); The system time is calibrated and the location information is obtained through the Beidou module (10), and then written into the data file; The power management module (4) performs intelligent power supply control on the computing module (2).

[0011] Furthermore, the audio microphone array (6) is used to locate the sound source, the infrasound sensor (5) is used for long-distance infrasound detection, and the vibration sensor (7) is used for underground vibration wave detection. The three work together to achieve composite detection of the same source target.

[0012] Furthermore, the relay transmission step includes: establishing an ad hoc network among multiple detection nodes through the LR-WIFI module (8) to realize data relay transmission.

[0013] Furthermore, the power management steps include: cutting off the power supply to the computing module (2) when it is not in use, in order to extend the system's battery life.

[0014] Beneficial effects: 1. The six microphones in this invention form an array, enabling them to locate airborne sound sources; the infrasound sensor has the capability to acquire infrasound data and detect signals over long distances; and the vibration sensor has the capability to acquire and detect vibration waves. These three types of waveform data and signals can be acquired and analyzed simultaneously.

[0015] 2. The data transmission of the present invention has the capability of multi-node relay transmission. Detection system nodes without 4G signal transmit to nodes with 4G signal via LR-WIFI.

[0016] 3. The present invention is reasonably designed, with all modules fixed and tightly integrated together. The whole system has the advantages of high detection accuracy, easy shielding, and high reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the principle of an embodiment of the present invention; Figure 2 This is a circuit principle block diagram of the present invention; Figure 3 This is a schematic diagram of the circuit board and infrasound sensor installation of the present invention.

[0018] In the diagram, 1-acquisition module, 2-computation module, 3-controller, 4-power supply and power management, 5-infrasound sensor, 6-microphone, 7-vibration sensor, 8-LR-WIFI module, 9-4G module, 10-BeiDou module, 11-storage module, 12-antenna group. Detailed Implementation

[0019] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below.

[0020] The present invention proposes an infrasound audio vibration composite detection system, comprising a data acquisition module [1], a computing module [2], a controller [3], a power supply and power management [4], an infrasound sensor [5], a microphone [6], a vibration sensor [7], an LR-WIFI module [8], a 4G module [9], a Beidou module

[10] , a storage module

[11] , and an antenna group

[12] . A composite detection system is composed of a data acquisition module [1], a subsonic sensor [5], six microphones [6], and a vibration sensor [7].

[0021] The acquisition module [1] transmits the acquired data to the controller [3]. The controller [3] controls the sampling rate of the acquisition module [1] and stores the data in the storage module

[11] . It also transmits the data to the calculation module [2]. The calculation module [2] returns the calculation result to the controller [3]. Simultaneously, data can be further transmitted between the detection systems via the LR-WIFI module [8] and the 4G module [9]; The LR-WIFI module [8] communicates with each other through the antenna group

[12] , which includes one Beidou antenna, one 4G antenna and two LR-WIFI antennas; The LR-WIFI module [8] enables the transmission of force between composite detection systems without 4G signals and composite detection systems with 4G signals. The 4G module [9] transmits the received calculation results data to the upper-level server. The BeiDou module

[10] is used to transmit the calibrated system time and location latitude and longitude information data to the controller [3]. The controller [3] uses BeiDou time to correct the system time on the one hand, and writes the BeiDou time and coordinate latitude and longitude information into the acquired data file on the other hand.

[0022] Power supply and power management [4] provide working power to the acquisition module [1], controller [3], infrasound sensor [5], microphone [6], vibration sensor [7], LR-WIFI module [8], 4G module [9], Beidou module

[10] , and storage module

[11] . It also provides working power to the computing module [2] and can cut off its power according to the usage of the module.

[0023] Six microphones [6] form an array, providing the ability to locate airborne sound sources; an infrasound sensor [5] has the ability to collect infrasound and detect signals over long distances; and a vibration sensor [7] has the ability to collect and detect vibration waves. The three waveform data and signals can be collected and analyzed simultaneously. This enhances anti-interference capabilities and expands the detection range.

[0024] A method for detecting infrasound audio vibration composite, characterized by comprising the following steps: Step 1: Composition of the composite detection system: Six audio microphones [6] form an array that can locate airborne sound sources; an infrasound sensor [5] can detect sound signals from airborne sources over long distances; and a vibration sensor [7] can detect waves propagating through underground media. This allows signals from the same source to be collected and analyzed.

[0025] Step Two: Data Acquisition, Storage, and Computation The acquisition module [1] transmits the signal data acquired by the composite detection system to the controller [3]. The controller [3] can control the sampling rate of the acquisition module [1], store the data in the storage module

[11] , and transmit the data to the calculation module [2]. The controller [3] receives the signal from the Beidou module

[10] , uses the module to correct the system time and obtain the position coordinate information, and writes the above information into the acquired data file and transmits it to the controller [3].

[0026] Specifically, the acquisition module [1] simultaneously acquires signals from one infrasound sensor [5], six microphones [6], and one vibration sensor [7], and transmits the acquired signal data to the storage module

[11] , and also transmits the data to the calculation module [2] to complete the required calculations.

[0027] Step 3: Data Transmission The calculation module [2] returns the calculation results to the controller [3], and the controller [3] can remotely transmit the calculation results to the next-level server via the 4G module [9]. If a certain detection system has no 4G signal, the LR-WIFI module [8] can relay the data from the detection system without 4G signal to the detection system node with 4G signal.

[0028] Step 4: Power Management The power management [4] provides operating power to the acquisition module [1], controller [3], infrasound sensor [5], microphone [6], vibration sensor [7], LR-WIFI module [8], 4G module [9], Beidou module

[10] , and storage module

[11] . The controller [3] can provide or cut off operating power according to the working status of the computing module [2].

[0029] The controller [3] can control the power supply of the computing module [2] and turn off the power when no computing is needed, so as to save power and extend the working time of the system.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A composite detection system for infrasound and audio vibration, characterized in that, include: Infrasound sensor (5), multiple audio microphones (6) and vibration sensor (7); The acquisition module (1) is used to synchronously acquire signals from the infrasound sensor (5), multiple audio microphones (6) and vibration sensor (7); The controller (3) is communicatively connected to the acquisition module (1) and is used to control the sampling rate, data storage and transmission; The calculation module (2) is used to process the collected data and output the recognition results; Storage module (11) is used to store the collected raw data and processing results; The communication module includes a 4G module (9) and an LR-WIFI module (8), which support data transmission and inter-node communication. The Beidou module (10) is used for system time calibration and location information acquisition; The power management module (4) is used to supply power to each module in the system and supports intelligent control of the power supply of the computing module (2).

2. The system according to claim 1, characterized in that, There are 6 audio microphones (6) forming a microphone array, which is used to locate airborne sound sources. The infrasound sensor (5) is used for long-distance infrasound signal detection; The vibration sensor (7) is used to detect vibration waves propagating in the underground medium.

3. The system according to claim 1, characterized in that, The controller (3) is configured to transmit the data collected by the acquisition module (1) to the computing module (2) for processing, and upload the processing results to the server via the 4G module (9) or the LR-WIFI module (8).

4. The system according to claim 1, characterized in that, The LR-WIFI module (8) is configured to establish a relay communication link between a detection node without 4G signal and a detection node with 4G signal, thereby enabling multi-hop data transmission.

5. The system according to claim 1, characterized in that, The Beidou module (10) is used to transmit time and location latitude and longitude information data to the controller (3). The controller (3) uses Beidou time to correct the system time on the one hand, and writes Beidou time and coordinate latitude and longitude information into the collected data file on the other hand.

6. The system according to claim 1, characterized in that, The controller (3) controls the power supply of the computing module (2) according to its working status to reduce system power consumption.

7. A method for combined detection of infrasound and audio vibration, characterized in that, Includes the following steps: Signals from the infrasound sensor (5), audio microphone array (6), and vibration sensor (7) are simultaneously acquired by the acquisition module (1); The collected data is transmitted to the controller (3) and stored in the storage module (11). The data is processed by the calculation module (2) to obtain the target recognition result; The processing results are uploaded to the server via the 4G module (9) or the LR-WIFI module (8); In nodes without 4G signal, data is relayed to nodes with 4G signal via LR-WIFI module (8); The system time is calibrated and the location information is obtained through the Beidou module (10), and then written into the data file; The power management module (4) performs intelligent power supply control on the computing module (2).

8. The method according to claim 7, characterized in that, The audio microphone array (6) is used to locate the sound source, the infrasound sensor (5) is used for long-distance infrasound detection, and the vibration sensor (7) is used for underground vibration wave detection. The three work together to achieve composite detection of the same source target.

9. The method according to claim 7, characterized in that, The relay transmission steps include: establishing an ad hoc network among multiple detection nodes through the LR-WIFI module (8) to achieve data relay transmission.

10. The method according to claim 7, characterized in that, The power management steps include: cutting off the power to the computing module (2) when it is not in use, in order to extend the system's battery life.

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