Radio device

Abstract

The invention discloses sound receiving equipment which comprises a sound wave sensing device and a sound receiving structure. The sound wave sensing device comprises a sound wave sensing element, a circuit module and a shell, the sound wave sensing element is arranged in the shell, the sound wave sensing element is coupled with the circuit module, and a shell opening is formed in the shell. The sound receiving structure is communicated with the sound wave sensing device, the sound receiving structure is provided with a first cavity and a second cavity which are communicated with the shell opening, and the second cavity comprises an inner opening and an outer opening which are connected with the first cavity.

Description

Technical Field

[0001] The present invention relates to a sound receiving device, in particular to a sound receiving device capable of enhancing the sound receiving effect of a specific frequency band. Background Art

[0002] Pressure vessels, such as cylinders, tanks, and pipelines, are widely used to store and transport compressed gases in both industrial and domestic environments. However, for various reasons, these pressure vessels are prone to developing leaks, leading to gas leaks. These leaks not only waste energy but, for certain gases, can also cause air pollution. Therefore, accurately detecting and locating leaks is crucial.

[0003] In the prior art, there are radio equipment for detecting gas leaks. However, the existing radio equipment has a short detection range and a high error rate, and its practicality and reliability are unsatisfactory. Summary of the Invention

[0004] An embodiment of the present invention provides a sound receiving device to address the problems of the prior art, comprising a sound wave sensing device and a sound receiving structure. The sound wave sensing device comprises a sound wave sensing element, a circuit module, and a housing. The sound wave sensing element is disposed within the housing and coupled to the circuit module. The housing defines a housing opening. The sound receiving structure is connected to the sound wave sensing device, wherein the sound receiving structure has a first cavity and a second cavity connected to the housing opening. The second cavity includes an inner opening connected to the first cavity and an outer opening.

[0005] The first cavity is located between the second cavity and the shell.

[0006] In one embodiment, the second cavity includes an inner opening and an outer opening, the inner opening is connected to the first cavity, and the size of the inner opening is the same as that of the outer opening.

[0007] In one embodiment, the first cavity has a first cavity volume, the second cavity has a second cavity volume, and the ratio of the second cavity volume to the first cavity volume is between 1 and 0.1.

[0008] In one embodiment, the first cavity has a first maximum cross-sectional width, and the second cavity has a second maximum cross-sectional width. The first maximum cross-sectional width is between 3 mm and 10 mm, and the second maximum cross-sectional width is between 2 mm and 5 mm.

[0009] In one embodiment, the first cavity has a first cavity depth, and the second cavity has a second cavity depth. The first cavity depth is between 1 mm and 3 mm, and the second cavity depth is between 1 mm and 3 mm.

[0010] In one embodiment, the acoustic wave sensing device is located outside the first cavity.

[0011] In another embodiment, the sound receiving structure further has an outer cavity connected to an external environment, and the outer opening of the second cavity is connected to the outer cavity.

[0012] In one embodiment, the first cavity is located between the second cavity and the shell, and the second cavity is located between the first cavity and the outer cavity.

[0013] In one embodiment, the first cavity has a first cavity volume, the second cavity has a second cavity volume, and the outer cavity has an outer cavity volume. The ratio of the second cavity volume to the first cavity volume is between 1 and 0.1, and the outer cavity volume is larger than the first cavity volume.

[0014] In one embodiment, the first cavity has a first cavity diameter, the second cavity has a second cavity diameter, the outer cavity has an outer cavity diameter, the second cavity diameter is less than or equal to the first cavity diameter, and the second cavity diameter is smaller than the outer cavity diameter.

[0015] In one embodiment, the outer cavity is flared toward the external environment.

[0016] In another embodiment, the present invention provides a sound receiving device comprising a first acoustic wave sensing device, a second acoustic wave sensing device, and a sound receiving structure. The first acoustic wave sensing device comprises a first acoustic wave sensing element, a first circuit module, and a first housing. The first acoustic wave sensing element is disposed within the first housing and coupled to the first circuit module. The first housing defines a first housing opening. The second acoustic wave sensing device comprises a second acoustic wave sensing element, a second circuit module, and a second housing. The second acoustic wave sensing element is disposed within the second housing and coupled to the second circuit module. The second housing defines a second housing opening. The sound receiving structure connects the first and second acoustic wave sensing devices, wherein the sound receiving structure has a first cavity, a second cavity, a third cavity, and a fourth cavity. The first cavity connects to the second cavity, the third cavity connects to the fourth cavity, the first housing opening connects to the first cavity and the second cavity, and the second housing opening connects to the third cavity and the fourth cavity.

[0017] In one embodiment, the first cavity is located between the second cavity and the first shell opening, and the third cavity is located between the fourth cavity and the second shell opening.

[0018] In one embodiment, the first cavity has a first cavity volume, the second cavity has a second cavity volume, the third cavity has a third cavity volume, and the fourth cavity has a fourth cavity volume. A first ratio of the second cavity volume to the first cavity volume is between 1 and 0.1, and a second ratio of the fourth cavity volume to the third cavity volume is between 1 and 0.1. The first ratio is different from the second ratio.

[0019] In one embodiment, the sound receiving structure further includes an outer cavity, the second cavity is located between the first cavity and the outer cavity, the fourth cavity is located between the third cavity and the outer cavity, and the outer cavity is connected to an external environment.

[0020] In one embodiment, the outer cavity has an outer cavity volume, which is greater than the first cavity volume, and the outer cavity volume is greater than the third cavity volume.

[0021] In one embodiment, the first cavity and the second cavity are adapted to enhance a first sound signal, and the third cavity and the fourth cavity are adapted to enhance a second sound signal. The first sound signal has a first frequency, and the second sound signal has a second frequency, and the first frequency is smaller than the second frequency.

[0022] In one embodiment, the first sound signal has a first wavelength, and a sensing distance is formed between the first sound wave sensing element and the second sound wave sensing element. The sensing distance is greater than half of the first wavelength.

[0023] In one embodiment, the audio receiving device further includes a processor coupled to the first circuit module and the second circuit module.

[0024] The sound receiving device of the present invention can detect sound frequencies within a specific frequency band. When used to detect gas leaks, it can effectively improve detection sensitivity and accuracy. Furthermore, with an appropriate external cavity, the detection bandwidth and range can be further expanded. Therefore, it has excellent practicality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a sound receiving device according to a first embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of a sound receiving device according to a second embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of a sound receiving device according to a third embodiment of the present invention;

[0028] Figure 4A is a schematic diagram of a sound receiving device according to a fourth embodiment of the present invention;

[0029] Figure 4B is a block diagram of a sound receiving device according to a fourth embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the sound reception effect of the sound reception device according to an embodiment of the present invention.

[0031] Explanation of symbols

[0032] R1, R2, R3, R4: Sound receiving device 101: Sound wave sensing device

[0033] 11: Acoustic wave sensing element

[0034] 12: Circuit module

[0035] 13: Shell

[0036] 131:Packaging structure opening

[0037] 132, 162: Sensing Space

[0038] 102: Acoustic wave sensing device

[0039] 14: Acoustic wave sensing element

[0040] 15: Circuit module

[0041] 16: Shell

[0042] 161: Shell opening 201, 202, 203: Sound receiving structure

[0043] 21: First cavity

[0044] 211: First inner opening

[0045] 212: first outer opening

[0046] 22: Second cavity

[0047] 221: Second inner opening

[0048] 222: Second outer opening

[0049] 25, 25': outer cavity

[0050] 3: Processor

[0051] w1: first maximum section width

[0052] w2: second maximum section width

[0053] L1: first cavity depth

[0054] L2: Second cavity depth First cavity diameter Second cavity diameter Outer cavity diameter d1: sensing distance DETAILED DESCRIPTION

[0055] Figure 1 This is a sound receiving device showing the first embodiment of the present invention. Figure 1 The sound receiving device R1 of the first embodiment of the present invention includes a sound wave sensing device 101 and a sound receiving structure 201. The sound wave sensing device 101 includes a sound wave sensing element 11, a circuit module 12, and a shell 13. The sound wave sensing element 11 is disposed within the shell 13 and coupled to the circuit module 12. The shell 13 forms a shell opening 131. The sound receiving structure 201 is disposed outside the sound wave sensing device 101 and is connected to the sound wave sensing device 101. The sound receiving structure 201 forms a first cavity 21 and a second cavity 22. The first cavity 21 is connected to the second cavity 22. The shell opening 131 is connected to the first cavity 21. The first cavity 21 is located between the second cavity 22 and the shell opening 131.

[0056] In the embodiments and claims of the present invention, the “connectivity” refers to spatial connectivity, that is, fluid (such as gas) can flow freely across for the transmission of sound waves.

[0057] Reference Figure 1 In one embodiment, the second cavity 22 includes a second inner opening 221 and a second outer opening 222 . The second inner opening 221 is connected to the first cavity 21 , and the size of the second inner opening 221 is the same as that of the second outer opening 222 .

[0058] Reference Figure 1 In one embodiment, the first cavity 21 includes a first inner opening 211 and a first outer opening 212. The first cavity 21 and the second cavity 22 are connected via the first outer opening 212 and the second inner opening 221. The second outer opening 222 of this embodiment is connected to the external environment.

[0059] Reference Figure 1 In one embodiment, the first cavity 21 has a first cavity volume, the second cavity 22 has a second cavity volume, and the ratio of the second cavity volume to the first cavity volume is between 1 and 0.1.

[0060] Reference Figure 1In one embodiment, the first cavity 21 has a first maximum cross-sectional width w1, and the second cavity 22 has a second maximum cross-sectional width w2. The first maximum cross-sectional width w1 is between 3 mm and 10 mm, and the second maximum cross-sectional width w2 is between 2 mm and 5 mm. The first cavity 21 and the second cavity 22 may be tubular or other shapes, and the above disclosure does not limit the present invention.

[0061] Reference Figure 1 In one embodiment, the first cavity 21 has a first cavity depth L1, the second cavity 22 has a second cavity depth L2, the first cavity depth L1 is between 1 mm and 3 mm, and the second cavity depth L2 is between 1 mm and 3 mm.

[0062] Reference Figure 1 In one embodiment, the acoustic wave sensing device 101 is located outside the first cavity 2 .

[0063] Figure 2 This is a sound receiving device showing a second embodiment of the present invention. Figure 2 In another embodiment, the present invention provides a sound receiving device R2, comprising an acoustic wave sensing device 101 and a sound receiving structure 202. The acoustic wave sensing device 101 comprises an acoustic wave sensing element 11, a circuit module 12, and a housing 13. The acoustic wave sensing element 11 and the circuit module 12 are disposed within a sensing space 132 of the housing 13. The acoustic wave sensing element 11 is coupled to the circuit module 12. The housing 13 defines a housing opening 131, which communicates with the sensing space 132. The sound receiving structure 202 is disposed outside the acoustic wave sensing device 101 and is connected to the acoustic wave sensing device 101, wherein the sound receiving structure 202 forms a first cavity 21, a second cavity 22, and an outer cavity 25. The first cavity 21 is connected to the second cavity 22, the shell opening 131 is connected to the first cavity 21, the first cavity 21 is located between the second cavity 22 and the shell opening 131, the second cavity 22 is located between the first cavity 21 and the outer cavity 25, and the outer cavity 25 is connected to an external environment.

[0064] Reference Figure 2 In one embodiment, the first cavity 21 has a first cavity volume, the second cavity 22 has a second cavity volume, and the outer cavity 25 has an outer cavity volume. The ratio of the second cavity volume to the first cavity volume is between 1 and 0.1, and the outer cavity volume is larger than the first cavity volume.

[0065] Reference Figure 2 In one embodiment, the first cavity 21 has a first cavity diameter The second cavity 22 has a second cavity diameter The outer cavity 25 has an outer cavity diameter The second cavity diameter Less than or equal to the diameter of the first cavity The second cavity diameter Smaller than the outer cavity diameter

[0066] Reference Figure 2 In one embodiment, the second cavity 22 includes a second inner opening 221 and a second outer opening 222 . The second inner opening 221 is connected to the first cavity 21 . The size of the inner opening 221 is the same as that of the outer opening 222 .

[0067] Reference Figure 2 In one embodiment, the first cavity 21 includes a first inner opening 211 and a first outer opening 212. The first cavity 21 and the second cavity 22 are connected via the first outer opening 212 and the second inner opening 221. The second outer opening 222 of this embodiment is connected to the external environment.

[0068] Figure 3 The third embodiment of the present invention is shown in FIG. Figure 3 In another embodiment, the present invention provides a sound receiving device R3. In this embodiment, the outer cavity 25' is flared toward the external environment. In this embodiment, the outer cavity 25' has a sound collecting effect.

[0069] Reference Figure 3 In one embodiment, the second cavity 22 includes a second inner opening 221 and a second outer opening 222 . The second inner opening 221 is connected to the first cavity 21 . The size of the inner opening 221 is the same as that of the outer opening 222 .

[0070] Reference Figure 3 In one embodiment, the first cavity 21 includes a first inner opening 211 and a first outer opening 212. The first cavity 21 and the second cavity 22 are connected via the first outer opening 212 and the second inner opening 221. The second outer opening 222 of this embodiment is connected to the external environment.

[0071] Figure 4A FIG. 4 is a diagram showing a sound receiving device according to a fourth embodiment of the present invention. Figure 4B FIG. 4 is a block diagram showing a sound receiving device according to a fourth embodiment of the present invention. Figure 4A 、 Figure 4BIn another embodiment, the present invention provides a sound receiving device R4, comprising a first acoustic wave sensing device 101, a second acoustic wave sensing device 102, and a sound receiving structure 203. The first acoustic wave sensing device 101 comprises a first acoustic wave sensing element 11, a first circuit module 12, and a first housing 13. The first acoustic wave sensing element 11 and the first circuit module 12 are disposed within a first sensing space 132 of the first housing 13. The first acoustic wave sensing element 11 is coupled to the first circuit module 12. The first housing 13 defines a first housing opening 131, which communicates with the first sensing space 132. The second acoustic wave sensing device 102 includes a second acoustic wave sensing element 14, a second circuit module 15, and a second housing 16. The second acoustic wave sensing element 14 and the second circuit module 15 are disposed within a second sensing space 162 of the second housing 16. The second acoustic wave sensing element 14 is coupled to the second circuit module 15. The second housing 16 defines a second housing opening 161 that communicates with the second sensing space 162. The sound receiving structure 203 is disposed outside the first acoustic wave sensing device 101 and the second acoustic wave sensing device 102 and is connected to the first acoustic wave sensing device 101 and the second acoustic wave sensing device 102. The sound receiving structure 203 defines a first cavity 21, a second cavity 22, a third cavity 23, and a fourth cavity 24. The first cavity 21 is connected to the second cavity 22, and the third cavity 23 is connected to the fourth cavity 24. The first shell opening 131 is connected to the first cavity 21, and the second shell opening 161 is connected to the third cavity 23. The first cavity 21 is located between the second cavity 22 and the first shell opening 131, and the third cavity 23 is located between the fourth cavity 24 and the second shell opening 161.

[0072] Reference Figure 4A 、 Figure 4B In one embodiment, the first cavity 21 has a first cavity volume, the second cavity 22 has a second cavity volume, the third cavity 23 has a third cavity volume, and the fourth cavity 24 has a fourth cavity volume. A first ratio of the second cavity volume to the first cavity volume is between 1 and 0.1, and a second ratio of the fourth cavity volume to the third cavity volume is between 1 and 0.1. The first ratio is different from the second ratio.

[0073] Reference Figure 4A 、 Figure 4B In one embodiment, the sound receiving structure 203 further includes an outer cavity 25, the second cavity 22 is located between the first cavity 21 and the outer cavity 25, the fourth cavity 24 is located between the third cavity 23 and the outer cavity 25, and the outer cavity 25 is connected to an external environment.

[0074] Reference Figure 4A 、 Figure 4B In one embodiment, the outer cavity 25 has an outer cavity volume, which is greater than the first cavity volume, and the outer cavity volume is greater than the third cavity volume.

[0075] Reference Figure 4A 、 Figure 4B In one embodiment, the first cavity 21 and the second cavity 22 are suitable for enhancing a first sound signal, and the third cavity 23 and the fourth cavity 24 are suitable for enhancing a second sound signal. The first sound signal has a first frequency, and the second sound signal has a second frequency, and the first frequency is smaller than the second frequency.

[0076] Reference Figure 4A 、 Figure 4B In one embodiment, the first acoustic signal has a first wavelength, and a sensing distance d1 is formed between the first acoustic wave sensing element 11 and the second acoustic wave sensing element 14. The sensing distance d1 is greater than half of the first wavelength. In one embodiment, the sensing distance d1 can be between 2 mm and 20 mm.

[0077] Matching reference Figure 4A 、 Figure 4B In one embodiment, the audio receiving device further includes a processor 3, which is coupled to the first circuit module 12 and the second circuit module 15. The processor 3 receives signals provided by the first circuit module 12 and the second circuit module 15 and performs analysis and processing.

[0078] Figure 5 This figure shows the sound receiving effect of the sound receiving device according to the embodiment of the present invention. Figure 5 When the sound receiving device of the embodiment of the present invention is not used, the sound receiving effect of the general existing sound receiving device is as shown by line segment S4. When the sound receiving device of the first embodiment of the present invention is used, the sound receiving effect of a specific frequency band can be enhanced. For example, when the ratio of the second cavity volume to the first cavity volume is 0.5, a sound receiving effect as shown by line segment S1 can be obtained. When the ratio of the second cavity volume to the first cavity volume is 0.7, a sound receiving effect as shown by line segment S2 can be obtained. However, when the sound receiving device of the fourth embodiment of the present invention is used, the bandwidth of the signal enhancement can be further expanded. For example, when the ratio of the second cavity volume to the first cavity volume is 0.5, and the ratio of the fourth cavity volume to the third cavity volume is 0.7, a sound receiving effect as shown by line segment S3 can be obtained. In addition, the above-mentioned external cavity design can further improve the detection distance.

[0079] The sound receiving device of the present invention can detect sound frequencies within a specific frequency band. When used to detect gas leaks, it can effectively improve detection sensitivity and accuracy. Furthermore, with an appropriate external cavity, the detection bandwidth and range can be further expanded. Therefore, it has excellent practicality and reliability.

[0080] Although the present invention has been disclosed above with reference to specific preferred embodiments, they are not intended to limit the present invention. Anyone familiar with the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the appended claims.

Claims

1. A radio receiving device, comprising: An acoustic wave sensing device includes an acoustic wave sensing element, a circuit module, and a housing. The acoustic wave sensing element is disposed within the housing and coupled to the circuit module. The housing has a housing opening. as well as The sound receiving structure is connected to the sound wave sensing device, wherein the sound receiving structure has a first cavity and a second cavity, the first cavity is connected to the shell opening, and the second cavity includes an inner opening connected to the first cavity and an outer opening.

2. The sound receiving device according to claim 1, wherein: The first cavity is located between the second cavity and the shell.

3. The sound receiving device according to claim 2, wherein: The size of the inner opening of the second cavity is the same as the size of the outer opening.

4. The sound receiving device according to claim 2, wherein: The first cavity has a first cavity volume, the second cavity has a second cavity volume, and a ratio of the second cavity volume to the first cavity volume is between 1 and 0.

1.

5. The sound receiving device according to claim 2, wherein: The first cavity has a first maximum cross-sectional width, and the second cavity has a second maximum cross-sectional width. The first maximum cross-sectional width is between 3 mm and 10 mm, and the second maximum cross-sectional width is between 2 mm and 5 mm.

6. The sound receiving device according to claim 2, wherein: The first cavity has a first cavity depth, and the second cavity has a second cavity depth. The first cavity depth is between 1 mm and 3 mm, and the second cavity depth is between 1 mm and 3 mm.

7. The sound receiving device according to claim 2, wherein: The acoustic wave sensing device is located outside the first cavity.

8. The sound receiving device according to claim 1, wherein: The sound receiving structure also has an outer cavity connected to the external environment, and the outer opening of the second cavity is connected to the outer cavity.

9. The sound receiving device according to claim 8, wherein: The first cavity is located between the second cavity and the shell, and the second cavity is located between the first cavity and the outer cavity.

10. The sound receiving device according to claim 9, wherein: The first cavity has a first cavity volume, the second cavity has a second cavity volume, and the outer cavity has an outer cavity volume. The ratio of the second cavity volume to the first cavity volume is between 1 and 0.1, and the outer cavity volume is larger than the first cavity volume.

11. The sound receiving device according to claim 10, wherein: The first cavity has a first cavity diameter, the second cavity has a second cavity diameter, the outer cavity has an outer cavity diameter, the second cavity diameter is smaller than or equal to the first cavity diameter, and the second cavity diameter is smaller than the outer cavity diameter.

12. The sound receiving device according to claim 11, wherein: The outer cavity is in an outwardly expanding shape toward the external environment.

13. A radio receiving device comprising: A first acoustic wave sensing device includes a first acoustic wave sensing element, a first circuit module, and a first housing, wherein the first acoustic wave sensing element is disposed within the first housing and coupled to the first circuit module, and the first housing has a first housing opening; A second acoustic wave sensing device includes a second acoustic wave sensing element, a second circuit module, and a second housing, wherein the second acoustic wave sensing element is disposed within the second housing and coupled to the second circuit module, and the second housing has a second housing opening; as well as A sound receiving structure is connected to the first and second sound wave sensing devices, wherein the sound receiving structure has a first cavity, a second cavity, a third cavity and a fourth cavity, the first cavity is connected to the second cavity, the third cavity is connected to the fourth cavity, the first shell opening is connected to the first cavity and the second cavity, and the second shell opening is connected to the third cavity and the fourth cavity.

14. The sound receiving device according to claim 13, wherein: The first cavity is located between the second cavity and the first shell opening, and the third cavity is located between the fourth cavity and the second shell opening.

15. The sound receiving device according to claim 14, wherein: The first cavity has a first cavity volume, the second cavity has a second cavity volume, the third cavity has a third cavity volume, and the fourth cavity has a fourth cavity volume. A first ratio of the second cavity volume to the first cavity volume is between 1 and 0.1, and a second ratio of the fourth cavity volume to the third cavity volume is between 1 and 0.

1. The first ratio is different from the second ratio.

16. The sound receiving device according to claim 15, wherein: The sound receiving structure further includes an outer cavity, the second cavity is located between the first cavity and the outer cavity, the fourth cavity is located between the third cavity and the outer cavity, and the outer cavity is connected to the external environment.

17. The sound receiving device according to claim 16, wherein: The outer cavity has an outer cavity volume, which is greater than the first cavity volume, and the outer cavity volume is greater than the third cavity volume.

18. The sound receiving device according to claim 15, wherein: The first cavity and the second cavity are suitable for enhancing a first sound signal, and the third cavity and the fourth cavity are suitable for enhancing a second sound signal. The first sound signal has a first frequency, and the second sound signal has a second frequency, and the first frequency is lower than the second frequency.

19. The sound receiving device according to claim 18, wherein: The first sound signal has a first wavelength. A sensing distance is formed between the first sound wave sensing element and the second sound wave sensing element. The sensing distance is greater than half of the first wavelength. 20 . The audio receiving device as claimed in claim 15 , further comprising a processor coupled to the first circuit module and the second circuit module.

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