An acoustic imaging detector

Abstract

The present invention discloses an acoustic imaging detector, which relates to the application field of acoustic imaging, including a detector body, a first microphone matrix for receiving vibration sound waves is arranged inside the detector body, and is characterized in that: at least one extension rod is detachably arranged on both sides of the detector body, the extension rod is provided with at least one microphone connected to the detector body for communication, and the first microphone matrix and all microphones arranged on the extension rod together constitute a second microphone matrix for receiving vibration sound waves. The present invention innovatively adopts a detachable extension rod, and a plurality of microphones are added on the left and right sides of the detector body. These additional microphones are combined with the first microphone matrix of the detector body to form a second microphone matrix that is more widely distributed and can receive lower-frequency vibration sound waves than the first microphone, while ensuring the portability of the whole machine. The receiving frequency band range of the whole machine is broadened. And the extension rod has the advantages of simple loading and unloading and convenient carrying.

Description

Technical Field

[0001] The invention relates to the application field of acoustic imaging, and in particular to an acoustic imaging detector. Background Art

[0002] It is very difficult to accurately locate the noise source by naked eyes and ears alone, so it is necessary to use an acoustic imaging detector for detection. The acoustic imaging system is a new type of noise source identification, positioning and test analysis system. It uses a high-sensitivity digital microphone to visualize the collected sound on the screen in the form of a color contour map, effectively measuring the sound field distribution. The sound image is perfectly superimposed with the visible light video image to form a detection effect similar to the temperature of an object by a thermal imager. It can quickly identify and locate steady-state, transient and moving sound sources, help people intuitively identify sound waves, sound fields and sound sources, understand the location and cause of noise generated by machinery and equipment, and then find ways to control noise. Existing acoustic imaging detectors can generally only detect medium and high frequency noise sources. There is no acoustic imaging detector that can detect medium and high frequency and low frequency noise at the same time, and the detection range of existing acoustic imaging detectors is also small. Summary of the invention

[0003] The present invention provides an acoustic imaging detector to solve the above problems existing in the prior art.

[0004] The present invention adopts the following technical solution:

[0005] An acoustic imaging detector comprises a detector body, a first microphone matrix for receiving vibration sound waves is arranged inside the detector body, at least one extension rod is detachably arranged on both sides of the detector body, the extension rod is provided with at least one microphone communicatively connected to the detector body, and a second microphone matrix for receiving vibration sound waves is composed of the first microphone matrix and all microphones arranged on the extension rod.

[0006] Furthermore, the extension rod is provided with a plurality of microphones arranged along the length direction.

[0007] Furthermore, the extension rod comprises a connector, a cover body and a circuit board provided with the microphone. The circuit board is installed inside the cover body, and the connector is assembled on the cover opening of the cover body and is communicatively connected to the circuit board.

[0008] Furthermore, the cover body comprises an upper shell and a lower shell, the cross sections of the upper shell and the lower shell are substantially arc-shaped, and the upper shell and the lower shell are both provided with a plurality of first protrusions, and the first protrusions abut against the circuit board.

[0009] Furthermore, the circuit board is provided with a widened limiting portion, and the inner wall of the cover body is provided with a limiting groove matched with the limiting portion.

[0010] Furthermore, the above-mentioned connecting head includes a connecting head body, a first connecting tube and a second connecting tube, one end of the above-mentioned second connecting tube is connected to the above-mentioned cover body, and the other end is inserted into the above-mentioned connecting head body, one end of the above-mentioned first connecting tube is threadedly connected to the above-mentioned connecting head body, and the other end is mutually clamped with the second connecting tube and is sleeved with the second connecting tube.

[0011] Furthermore, a first annular flange is disposed on the outer surface of the first connecting tube, and an annular groove embedded in the first annular flange is disposed on the inner wall of the cover body.

[0012] Furthermore, the inner wall of the cover body is provided with a second annular flange abutting against the end surface of the second connecting tube.

[0013] Furthermore, the second connecting tube is provided with a positioning hole, and the inner wall of the cover body is provided with a positioning block embedded in the positioning hole.

[0014] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0015] First, the present invention provides an acoustic imaging detector, including a detector body, a first microphone matrix for receiving vibration sound waves is provided inside the detector body, at least one extension rod is detachably provided on both sides of the detector body, the extension rod is provided with at least one microphone connected to the detector body by communication, and the first microphone matrix and all microphones arranged on the extension rod together constitute a second microphone matrix for receiving vibration sound waves; wherein, the present invention innovatively adopts a detachable extension rod, and a plurality of microphones are added on the left and right sides of the detector body, and these additional microphones are combined with the first microphone matrix of the detector body to form a wider distribution, and a second microphone matrix that can receive lower frequency vibration sound waves than the first microphone, and on the premise of ensuring the portability of the whole machine, the receiving frequency band range of the whole machine is widened. And the extension rod has the advantages of simple loading and unloading and convenient carrying.

[0016] Secondly, the cover body includes an upper shell and a lower shell, the cross-sections of the upper shell and the lower shell are roughly arc-shaped, and the upper shell and the lower shell are both provided with a plurality of first protrusions, which abut against the circuit board, and the circuit board can be stably pressed between the upper shell and the lower shell.

[0017] Thirdly, the circuit board is provided with a widened limiting portion, and the inner wall of the cover body is provided with a limiting groove matched with the limiting portion; the positioning structure between the circuit board and the cover body prevents the circuit board from moving randomly along the length direction.

[0018] Fourthly, a first annular flange is provided on the outer surface of the first connecting tube, and an annular groove embedded with the first annular flange is provided on the inner wall of the cover body; a positioning structure between the first connecting tube and the cover body prevents the cover body from moving relative to the first connecting tube.

[0019] Fifth, the inner wall of the cover body is provided with a second annular flange abutting against the end face of the second connecting tube, the second connecting tube is provided with a positioning hole, and the inner wall of the cover body is provided with a positioning block embedded in the positioning hole; the positioning structure between the second connecting tube and the cover body prevents the cover body from moving or rotating relative to the second connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the assembly of the detector body and the extension rod in the present invention.

[0021] Figure 2 This is a disassembly diagram of the extension rod in the present invention.

[0022] Figure 3 It is a schematic diagram of the front structure of the upper shell in the present invention.

[0023] Figure 4 This is a cross-sectional view of the installation of the extension rod in the present invention.

[0024] Figure 5 It is a structural schematic diagram of the second connecting tube in the present invention. DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0026] refer to Figures 1 to 5 , an acoustic imaging detector, comprising a detector body 1, wherein a first microphone matrix for receiving vibration sound waves is arranged inside the detector body 1; at least one extension rod 2 is detachably arranged on both sides of the detector body 1. The extension rod 2 comprises a connector, a cover body and a circuit board 26, and the circuit board 26 is provided with a plurality of microphones 27 which are communicatively connected to the detector body 1 arranged along the length direction. The second microphone matrix for receiving vibration sound waves is composed of the first microphone matrix and all the microphones 27 arranged on the extension rod 2. Among them, the receiving frequency band range of the first microphone matrix is ​​approximately between 600Hz and 20kHz, and the receiving frequency band range of the second microphone matrix is ​​approximately between 300Hz and 20kHz. Of course, the first microphone matrix and the second microphone matrix are not limited to the above-mentioned frequency band range. Here, it is just to further explain the changes in the frequency band range of the acoustic imaging detector brought by the extension rod 2 with microphone 27 as an example.

[0027] refer to Figures 1 to 5The housing includes an upper housing 24 and a lower housing 25, and the cross-sections of the upper housing 24 and the lower housing 25 are roughly arc-shaped. The circuit board 26 is installed inside the housing, and the upper housing 24 and the lower housing 25 are both provided with a plurality of first protrusions 28, and the first protrusions 28 abut against the circuit board 26. The circuit board 26 is provided with a widened limiting portion 261, and the inner wall of the housing is provided with a limiting groove 254 matched with the limiting portion 261. The lower housing 25, the circuit board 26 and the upper housing 24 are connected in sequence by bolts 3.

[0028] refer to Figures 1 to 5 , the connector includes a connector body 21, a first connecting cylinder 22 and a second connecting cylinder 23. The connector is assembled on the cover opening of the cover body and is communicatively connected to the circuit board 26. One end of the second connecting cylinder 23 is connected to the cover body, and the other end is inserted into the connector body 21. One end of the first connecting cylinder 22 is threadedly connected to the connector body 21, and the other end is mutually clamped and sleeved with the second connecting cylinder 23. A first annular flange 221 is provided on the outer surface of the first connecting cylinder 22, and an annular groove embedded with the first annular flange 221 is provided on the inner wall of the cover body. The annular groove is composed of a first annular recess 255 of the upper shell 24 and a second annular recess 251 of the lower shell 25. The inner wall of the cover body is provided with a second annular flange abutting against the end face of the second connecting cylinder 23. The second annular flange is composed of a first annular protrusion 258 of the upper shell 24 and a second annular protrusion 253 of the lower shell 25.

[0029] refer to Figures 1 to 5 The second connecting tube 23 is provided with a first positioning hole 231 and a second positioning hole 232, and the inner wall of the cover is provided with a first positioning block 256 embedded in the first positioning hole 231 and a second positioning block 252 embedded in the second positioning hole 232. The other end of the second connecting tube 23 is also provided with a second groove 233 to cooperate with the second protrusion 257 of the upper shell 24.

[0030] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An acoustic imaging detector, comprising a detector body, wherein a first microphone matrix for receiving vibration sound waves is arranged inside the detector body, characterized in that: At least one extension rod is detachably provided on both sides of the detector body, and the extension rod is provided with at least one microphone communicatively connected to the detector body, and the first microphone matrix and all the microphones arranged on the extension rod together constitute a second microphone matrix for receiving vibration sound waves; the extension rod is provided with a plurality of the microphones arranged along the length direction; the extension rod comprises a connecting head, a cover body and a circuit board provided with the microphones, the circuit board is installed inside the cover body, the connecting head is assembled on the cover opening of the cover body, and is communicatively connected to the circuit board; the cover body comprises an upper shell and a lower shell, the cross-sections of the upper shell and the lower shell are arc-shaped, and the upper shell and the lower shell are both provided with a plurality of first protrusions, and the first protrusions abut against the circuit board; the circuit board is provided with a limiting portion formed by widening, and the inner wall of the cover body is provided with a limiting groove matching the limiting portion.

2. The acoustic imaging detector according to claim 1, characterized in that: The connector includes a connector body, a first connecting tube and a second connecting tube, one end of the second connecting tube is connected to the cover body, and the other end is inserted into the connector body, one end of the first connecting tube is threadedly connected to the connector body, and the other end is clamped and sleeved with the second connecting tube.

3. An acoustic imaging detector according to claim 2, characterized in that: A first annular flange is disposed on the outer surface of the first connecting tube, and an annular groove embedded in the first annular flange is disposed on the inner wall of the cover body.

4. The acoustic imaging detector according to claim 2, characterized in that: The inner wall of the cover body is provided with a second annular flange abutting against the end surface of the second connecting tube.

5. The acoustic imaging detector according to claim 2, characterized in that: The second connecting tube is provided with a positioning hole, and the inner wall of the cover body is provided with a positioning block embedded in the positioning hole.

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