Audio device with water level detection function and outdoor sound post

Abstract

The utility model discloses an audio device with a water level detection function and an outdoor sound post, and the device comprises a main control module, a water level detection module, a front and back stage amplification module, an audio module, and a power module. The water level detection module is connected to the main control module; the input end of the front-back stage amplification module is connected to the main control module, and the output end of the front-back stage amplification module is connected to the audio module; and the power supply module is used for supplying power to the main control module, the water level detection module, the front and back stage amplification module and the audio module. The water level detection module of the audio device can provide a trigger signal to the main control module when being submerged in water, so that the main control module executes power-off operation after receiving the trigger signal, and the safety of an outdoor sound post is improved. The utility model relates to the technical field of column loudspeaker box control.

Description

Technical Field

[0001] This utility model relates to the field of sound column speaker control technology, and in particular to an audio device with water level detection and an outdoor sound column. Background Technology

[0002] In modern society, outdoor public address speakers are a common device, widely used in public places such as squares, parks, and stadiums to play music, broadcast announcements, and other audio information.

[0003] Currently, in practical applications, a considerable number of outdoor speaker columns are installed near rivers or in low-lying outdoor environments. When encountering sudden heavy rain or river backflow causing water levels to rise, outdoor speaker columns are easily partially or completely submerged in water. However, existing outdoor speaker columns are not designed with water level detection functions in mind, and outdoor speaker columns often cannot be powered off in time, which poses certain safety hazards.

[0004] Therefore, the problems existing in the current technology still need to be solved and optimized. Utility Model Content

[0005] The purpose of this utility model is to solve, to a certain extent, the technical problems existing in related technologies.

[0006] Therefore, one objective of this utility model is to provide an audio device with water level detection and an outdoor speaker column, wherein the audio device is beneficial to improving the safety of the outdoor speaker column.

[0007] To achieve the above-mentioned technical objectives, this utility model provides an audio device with water level detection, including a main control module, a water level detection module, a pre-amplifier and power amplifier module, an audio module, and a power supply module.

[0008] The water level detection module is connected to the main control module;

[0009] The input terminals of the pre-amplifier and pre-amplifier modules are connected to the main control module, and the output terminals of the pre-amplifier and pre-amplifier modules are connected to the audio module.

[0010] The power module is used to supply power to the main control module, the water level detection module, the pre-amplifier and power amplifier modules, and the audio module.

[0011] In addition, an audio device with water level detection according to an embodiment of the present invention may also have the following additional technical features:

[0012] Optionally, in one embodiment of the present invention, the water level detection module includes several water level detection sub-units, each of which is connected to the main control module.

[0013] Optionally, in one embodiment of the present invention, the water level detection subunit includes a water detection circuit board and a water detection processing circuit. The first end of the water detection circuit board is connected to the power module, the second end of the water detection circuit board is connected to the input end of the water detection processing circuit, and the output end of the water detection processing circuit is connected to the main control module.

[0014] Optionally, in one embodiment of the present invention, the water detection and processing circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, and a Zener diode;

[0015] The first end of the first resistor is connected to the second end of the water detection circuit board, and the second end of the first resistor is connected to the base of the first transistor through the second resistor;

[0016] The collector of the first transistor is connected to the collector of the second transistor through the third resistor and the fourth resistor, and the emitter of the first transistor is connected to the base of the second transistor through the fifth resistor.

[0017] The emitter of the second transistor is connected to the positive terminal of the Zener diode, the negative terminal of the Zener diode is connected to the second terminal of the first resistor, and the collector of the second transistor is connected to the emitter of the third transistor.

[0018] The base of the third transistor is connected to the emitter of the fourth transistor through the sixth resistor, the collector of the third transistor is connected to the base of the fourth transistor, and the collector of the fourth transistor is connected to the main control module.

[0019] Optionally, in one embodiment of the present invention, the pre-amplifier and post-amplifier module includes a pre-amplifier unit and a post-amplifier unit;

[0020] The input terminal of the preamplifier unit is connected to the main control module, the output terminal of the preamplifier unit is connected to the input terminal of the power amplifier unit, and the output terminal of the power amplifier unit is connected to the audio module.

[0021] Optionally, in one embodiment of the present invention, the preamplifier unit includes an SGM8904 chip, the first pin of the SGM8904 chip is connected to the main control module, and the second pin of the SGM8904 chip is connected to the power amplifier unit.

[0022] Optionally, in one embodiment of the present invention, the power amplifier unit includes a TPA3116 chip, and the fourth pin of the TPA3116 chip is connected to the preamplifier unit.

[0023] Optionally, in one embodiment of the present invention, the main control module includes an ARM Cortex-A7 core main control chip.

[0024] On the other hand, this utility model embodiment also provides an outdoor speaker column, including a speaker column housing, a speaker column bottom cover, a speaker column top cover, and an audio device with water level detection as described above;

[0025] The bottom cover of the sound column is installed at the bottom of the sound column housing, the top cover of the sound column is installed at the top of the sound column housing, and the audio device with water level detection is disposed inside the sound column housing.

[0026] Optionally, in one embodiment of the present invention, a drain outlet is provided at the bottom of the sound column housing, and a plurality of water level detection ports are provided on the sound column housing, each of the water level detection ports being provided with a water level detection module in the audio device with water level detection.

[0027] The advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention:

[0028] This application discloses an audio device with water level detection and an outdoor speaker column. The audio device includes a main control module, a water level detection module, a pre-amplifier / power amplifier module, an audio module, and a power supply module. The water level detection module is connected to the main control module. The input terminals of the pre-amplifier / power amplifier module are connected to the main control module, and the output terminals of the pre-amplifier / power amplifier module are connected to the audio module. The power supply module supplies power to the main control module, the water level detection module, the pre-amplifier / power amplifier module, and the audio module. When the audio device is submerged in water, the water level detection module can provide a trigger signal to the main control module, causing the main control module to perform a power-off operation upon receiving the trigger signal, which helps improve the safety of the outdoor speaker column. Attached Figure Description

[0029] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0030] Figure 1 A schematic diagram of the frame of an audio device with water level detection provided for one embodiment of the present invention;

[0031] Figure 2 A circuit diagram of a water level detection module provided in one embodiment of this utility model;

[0032] Figure 3 A simplified structural diagram of a water detection circuit board provided in one embodiment of this utility model;

[0033] Figure 4 A circuit schematic diagram of a preamplifier unit provided for one embodiment of the present invention;

[0034] Figure 5 A circuit schematic diagram of a power amplifier unit provided in one embodiment of this utility model;

[0035] Figure 6 A simplified structural diagram of an outdoor sound column is provided as an embodiment of this utility model;

[0036] Figure 7 This is a rear view structural diagram of a sound column housing provided for one embodiment of the present utility model. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the terms "length," "upper," "lower," "front," "rear," "left," "right," "top," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] Currently, existing outdoor speaker columns are not designed with water level detection in mind. In practical applications, a significant number of outdoor speaker columns are installed near rivers or in low-lying outdoor environments. In the event of sudden heavy rain or river backflow causing water levels to rise, these outdoor speaker columns are easily partially or completely submerged in water.

[0040] Specifically, existing outdoor speaker columns typically use PoE (Power over Ethernet) or direct 220V AC mains power. PoE power transmission, which transmits power and data via network cables, reduces wiring complexity. However, when the water level rises in the area where the speaker column is located, the inability to cut off power promptly may lead to short circuits in the power supply lines, potentially damaging the speaker column's equipment and causing safety issues. While direct 220V AC mains power is more stable, its inability to cut off power promptly when the water level rises may cause leakage, posing a risk of electric shock to passersby and creating a safety hazard.

[0041] In view of this, the present utility model application provides an audio device with water level detection and an outdoor speaker column. The water level detection module of the audio device can provide a trigger signal to the main control module when it is submerged in water, so that the main control module can perform a power-off protection operation after receiving the trigger signal. This can improve the safety hazards of the outdoor speaker column and help improve the safety of the outdoor speaker column.

[0042] Reference Figure 1 Specifically, an audio device with water level detection in an embodiment of this application includes a main control module, a water level detection module, a pre-amplifier and pre-amplifier module, an audio module, and a power supply module.

[0043] The water level detection module is connected to the main control module;

[0044] The input terminals of the pre-amplifier and pre-amplifier modules are connected to the main control module, and the output terminals of the pre-amplifier and pre-amplifier modules are connected to the audio module.

[0045] The power module is used to supply power to the main control module, the water level detection module, the pre-amplifier and power amplifier modules, and the audio module.

[0046] In this embodiment, the water level detection module provides a trigger signal to the main control module when the water level detection module itself is submerged; the pre- and post-amplification modules perform signal amplification and power amplification operations on the audio signal forwarded by the main control module; the power supply module supplies power to the main control module, the water level detection module, the pre- and post-amplification modules, and the audio module, and also receives a power-off control signal transmitted by the main control module, and stops supplying power to the corresponding module according to the power-off control signal. The power supply module can be a power manager, etc. There are many power managers on the market, which will not be described in detail here.

[0047] It is understood that the main control module is used to receive the trigger signal sent by the water level detection module, and when the trigger signal is received, it sends the corresponding power-off control signal to the power supply module to realize the power-off protection operation of all or some modules of the audio device; in addition, the main control module in this embodiment is also used to receive audio signals from the communication network and decode them, and then forward the decoded audio signals to the audio module through the pre- and post-amplification modules so that the audio module can broadcast to the external environment.

[0048] For example, the working principle of an audio device with water level detection provided in this application embodiment is as follows:

[0049] When the audio device with water level detection is operating normally, the water level detection module does not provide a trigger signal to the main control module. The main control module receives and decodes the audio signal from the communication network, then forwards the decoded audio signal to the audio module through pre- and post-amplification modules for broadcasting to the external environment. Alternatively, when the water level detection module is submerged in water, it generates and provides a trigger signal to the main control module. Upon receiving the trigger signal, the main control module generates a corresponding power-off control signal and sends it to the power supply module, causing the power supply module to perform a power-off protection operation on all or some modules of the audio device.

[0050] It is worth mentioning that this audio device with water level detection does not involve any software improvements, and the software aspects can be easily derived from existing technology.

[0051] In some embodiments, the water level detection module includes a plurality of water level detection sub-units, each of which is connected to the main control module.

[0052] In some embodiments, the water level detection subunit includes a water detection circuit board and a water detection processing circuit. The first end of the water detection circuit board is connected to the power module, the second end of the water detection circuit board is connected to the input end of the water detection processing circuit, and the output end of the water detection processing circuit is connected to the main control module.

[0053] Reference Figure 2 and Figure 3 In some embodiments, the water detection and processing circuit includes a first resistor R10, a second resistor R9, a third resistor R7, a fourth resistor R8, a fifth resistor R11, a sixth resistor R12, a first transistor Q5, a second transistor Q7, a third transistor Q8, a fourth transistor Q6, and a Zener diode Z2.

[0054] The first end of the first resistor is connected to the second end of the water detection circuit board, and the second end of the first resistor is connected to the base of the first transistor through the second resistor;

[0055] The collector of the first transistor is connected to the collector of the second transistor through the third resistor and the fourth resistor, and the emitter of the first transistor is connected to the base of the second transistor through the fifth resistor.

[0056] The emitter of the second transistor is connected to the positive terminal of the Zener diode, the negative terminal of the Zener diode is connected to the second terminal of the first resistor, and the collector of the second transistor is connected to the emitter of the third transistor.

[0057] The base of the third transistor is connected to the emitter of the fourth transistor through the sixth resistor, the collector of the third transistor is connected to the base of the fourth transistor, and the collector of the fourth transistor is connected to the main control module.

[0058] In this embodiment, the water level detection module includes several water level detection sub-units. The specific number of water level detection sub-units can be set according to the actual situation, such as any one of 1, 3, 5, etc. Each water level detection sub-unit is connected to the main control module.

[0059] Understandably, a water level detection subunit includes a water detection circuit board 100 and a water detection processing circuit 200. The water detection circuit board includes detection board A 101 and detection board B 102. Detection board A and detection board B are not conductive under normal operating conditions, but become conductive when water enters the surface of the water detection circuit board. Furthermore, the water detection processing circuit can provide a power signal to detection board A in the water detection circuit board via a power module. When the surface of the water detection circuit board is not flooded and it is under normal operating conditions, the water detection circuit board is not conductive; or, when water enters the surface of the water detection circuit board, detection board A and detection board B become conductive, and the power signal provided by the power module will successively turn on the first transistor, second transistor, third transistor, and fourth transistor, and the main control module will receive a trigger signal from the water detection processing circuit.

[0060] In some embodiments, the pre-amplifier and post-amplifier module includes a pre-amplifier unit and a post-amplifier unit;

[0061] The input terminal of the preamplifier unit is connected to the main control module, the output terminal of the preamplifier unit is connected to the input terminal of the power amplifier unit, and the output terminal of the power amplifier unit is connected to the audio module.

[0062] Reference Figure 4In some embodiments, the preamplifier unit includes an SGM8904 chip, with a first pin of the SGM8904 chip connected to the main control module and a second pin of the SGM8904 chip connected to the power amplifier unit.

[0063] Reference Figure 5 In some embodiments, the power amplifier unit includes a TPA3116 chip, and the fourth pin of the TPA3116 chip is connected to the preamplifier unit.

[0064] In this embodiment, the audio module can be a speaker or other device. Specifically, when the main control module receives and decodes the audio signal provided by the external device from the communication network, it can forward the decoded audio signal to the SGM8904 chip. Specifically, the decoded audio signal can pass through capacitor C2, capacitor C3, resistor R2, and resistor R3 before entering the operational amplifier chip SGM8904. The SGM8904 chip performs pre-amplification processing on the decoded audio signal to obtain the operationally amplified audio signal AMP IN.

[0065] Understandably, the operationally amplified audio signal AMP IN is input to the power amplifier unit, and after being amplified by the TPA3116 chip and its associated circuit components, the amplified audio signal is obtained. This amplified audio signal is then transmitted to the audio module through interface P9, so that the audio module (such as a speaker) can emit audio sound to the external environment.

[0066] In some embodiments, the main control module includes an ARM Cortex-A7 core main control chip.

[0067] In this application embodiment, an ARM Cortex-A7 core main control chip can be used as the main control module. The ARM Cortex-A7 core main control chip integrates communication and audio decoding functions. It can realize audio data transmission between the audio device with water level monitoring and external devices, as well as decode the received audio signals. There are already various ways for the ARM Cortex-A7 core main control chip to receive and decode audio signals, which will not be described in detail here.

[0068] Additionally, refer to Figure 6 This application embodiment also provides an outdoor speaker column, including a speaker column housing 400, a speaker column bottom cover 500, a speaker column top cover 300, and an audio device with water level detection as described above;

[0069] The bottom cover of the sound column is installed at the bottom of the sound column housing, the top cover of the sound column is installed at the top of the sound column housing, and the audio device with water level detection is disposed inside the sound column housing.

[0070] In this embodiment, the outdoor speaker column includes a speaker column housing, a speaker column bottom cover, a speaker column top cover, and an audio device with water level detection as described above. The audio device with water level detection can be installed inside the speaker column housing. When the outdoor speaker column is partially or completely submerged, the water level detection module of the audio device generates a trigger signal, which is sent to the main control module. After receiving the trigger signal, the main control module generates a corresponding power-off control signal and sends the power-off control signal to the power supply module. This allows the power supply module to power off all or some modules of the audio device based on the received power-off control signal, thereby preventing the outdoor speaker column's related equipment from being burned out or leaking electricity, and improving the safety of the outdoor speaker column.

[0071] Understandably, in Figure 6 In the audio device with water level detection, the main control module, pre-amplifier and power amplifier modules, audio module and power supply module are integrated on an integrated circuit board 600. The integrated circuit board is located on the top of the sound column housing. This application example is only for illustration. The integrated circuit board can also be located in the upper middle part, middle part, etc. inside the sound column housing. This application will not elaborate further here.

[0072] Reference Figure 7 In some embodiments, a drain outlet is provided at the bottom of the sound column housing, and a plurality of water level detection ports are provided on the sound column housing, each of the water level detection ports being provided with a water level detection module in the audio device with water level detection.

[0073] In this embodiment, a drain outlet 700 can be provided at the bottom of the speaker column housing to drain accumulated water inside the outdoor speaker column. Additionally, the speaker column housing can be provided with several water level detection ports 800. This embodiment uses two water level detection ports on the speaker column housing and an integrated circuit board located at the top of the speaker column housing as an example. The specific number of water level detection ports can be set according to actual conditions, such as three or five, with each water level detection port located at a different position on the speaker column housing.

[0074] Specifically, the first water level detection port can be located in the lower half of the speaker column housing, and the second water level detection port can be located in the upper half of the speaker column housing. Each water level detection port is equipped with a water detection circuit board from a water level detection module. When the water detection circuit board of the first water level detection port is submerged, the main control module can receive a trigger signal sent by the water level detection module installed in the first water level detection port. The main control module can generate a corresponding power-off control signal to the power supply module based on the trigger signal to partially de-energize the outdoor speaker column. Alternatively, when the water detection circuit board of the second water level detection port is submerged, the main control module can receive a trigger signal sent by the water level detection module installed in the second water level detection port. The main control module can generate a corresponding power-off control signal to the power supply module based on the trigger signal to completely de-energize the outdoor speaker column. This application example is for illustrative purposes only and is not intended to limit the scope of this application.

[0075] In the description of this specification, references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An audio device with water level detection, characterized in that, It includes a main control module, a water level detection module, a pre-amplifier and power amplifier module, an audio module, and a power supply module; The water level detection module is connected to the main control module; The input terminals of the pre-amplifier and pre-amplifier modules are connected to the main control module, and the output terminals of the pre-amplifier and pre-amplifier modules are connected to the audio module. The power module is used to supply power to the main control module, the water level detection module, the pre-amplifier and power amplifier modules, and the audio module.

2. The audio device according to claim 1, characterized in that, The water level detection module includes several water level detection sub-units, and each water level detection sub-unit is connected to the main control module.

3. The audio device according to claim 2, characterized in that, The water level detection subunit includes a water detection circuit board and a water detection processing circuit. The first end of the water detection circuit board is connected to the power module, the second end of the water detection circuit board is connected to the input end of the water detection processing circuit, and the output end of the water detection processing circuit is connected to the main control module.

4. The audio device according to claim 3, characterized in that, The water detection and processing circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, and a Zener diode; The first end of the first resistor is connected to the second end of the water detection circuit board, and the second end of the first resistor is connected to the base of the first transistor through the second resistor; The collector of the first transistor is connected to the collector of the second transistor through the third resistor and the fourth resistor, and the emitter of the first transistor is connected to the base of the second transistor through the fifth resistor. The emitter of the second transistor is connected to the positive terminal of the Zener diode, the negative terminal of the Zener diode is connected to the second terminal of the first resistor, and the collector of the second transistor is connected to the emitter of the third transistor. The base of the third transistor is connected to the emitter of the fourth transistor through the sixth resistor, the collector of the third transistor is connected to the base of the fourth transistor, and the collector of the fourth transistor is connected to the main control module.

5. The audio device according to claim 1, characterized in that, The pre-amplifier and post-amplifier modules include a pre-amplifier unit and a post-amplifier unit. The input terminal of the preamplifier unit is connected to the main control module, the output terminal of the preamplifier unit is connected to the input terminal of the power amplifier unit, and the output terminal of the power amplifier unit is connected to the audio module.

6. The audio device according to claim 5, characterized in that, The preamplifier unit includes an SGM8904 chip. The first pin of the SGM8904 chip is connected to the main control module, and the second pin of the SGM8904 chip is connected to the power amplifier unit.

7. The audio device according to claim 5, characterized in that, The power amplifier unit includes a TPA3116 chip, and the fourth pin of the TPA3116 chip is connected to the preamplifier unit.

8. The audio device according to claim 5, characterized in that, The main control module includes an ARM Cortex-A7 core main control chip.

9. An outdoor speaker column, characterized in that, It includes a sound column housing, a sound column bottom cover, a sound column top cover, and an audio device with water level detection as described in any one of claims 1-8; The bottom cover of the sound column is installed at the bottom of the sound column housing, the top cover of the sound column is installed at the top of the sound column housing, and the audio device with water level detection is disposed inside the sound column housing.

10. The outdoor speaker column according to claim 9, characterized in that, The bottom of the sound column housing is provided with a drain outlet, and the sound column housing is provided with a number of water level detection ports, each of which is provided with a water level detection module in the audio device with water level detection.

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