Noise reduction system, equipment and vehicle

Abstract

The invention relates to a noise reduction system, equipment applying the noise reduction system and a vehicle, the system comprises at least one signal acquisition and transmission module to improve the noise reduction effect, and the signal acquisition and transmission module comprises at least one signal receiving and transmitting sub-module and at least one signal acquisition sub-module which are separately arranged. Any one of the signal transmit-receive sub-modules is connected with one or more of the at least one signal acquisition sub-module. Therefore, at least one signal acquisition sub-module can be arranged in a relatively flexible position according to actual noise reduction requirements, at least one signal transceiving sub-module can be arranged in a flexible position according to the actual structure of the equipment to be subjected to noise reduction, and one signal transceiving sub-module can be connected with one or more signal acquisition sub-modules. And the arrangement flexibility of the noise reduction system is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of device noise reduction technology, and in particular to a noise reduction system, a device using the noise reduction system, and a vehicle. BACKGROUND

[0002] With the innovation of the informationization of the automobile industry, the functions on the automobile are becoming more and more rich, the dependence of automobile users on the automobile is becoming stronger, the demand is improving faster and faster, and the experience requirement in the vehicle is also becoming higher and higher, and the noise in the vehicle is a major problem. With the increasing demand for noise elimination in the vehicle, the vehicle active noise reduction system emerges as the times require, which can greatly improve the sound environment in the vehicle and reduce the noise level. In the active noise reduction system, a signal acquisition module is arranged at each signal acquisition position, and in the prior art, each signal acquisition module includes a pair of signal transceiver modules and a signal collector corresponding to each other, which limits the system layout and results in high cost. SUMMARY

[0003] Embodiments of the present application provide a noise reduction system to overcome the above problems or at least partially solve the above problems.

[0004] According to a first aspect of the present application, a noise reduction system is provided, comprising: at least one signal acquisition and transmission module;

[0005] The signal acquisition and transmission module comprises at least one signal transceiver sub-module and at least one signal acquisition sub-module arranged separately, and any one of the signal transceiver sub-modules is connected to one or more of the signal acquisition sub-modules.

[0006] Optionally, the at least one signal acquisition sub-module of the signal acquisition and transmission module is arranged in the same partition of the device to be noise reduced; or the at least one signal acquisition sub-module of the signal acquisition and transmission module is at least partially arranged in different partitions of the device to be noise reduced.

[0007] Optionally, the at least one signal transceiver sub-module of the signal acquisition and transmission module is arranged in the same partition as at least part of the signal acquisition sub-modules connected thereto, or is arranged in different partitions from all the signal acquisition sub-modules connected thereto.

[0008] Optionally, the at least one signal acquisition sub-module of the signal acquisition and transmission module is arranged in the same partition of the device to be noise reduced, and at least part of the at least one signal acquisition sub-module is arranged at different positions in the same partition.

[0009] Optionally, any one of the signal transceiver sub-modules is connected to one or more of the signal acquisition sub-modules by a wire harness or wirelessly.

[0010] Optionally, the at least one signal acquisition and transmission module is connected with the controller in series.

[0011] Optionally, the noise reduction system further comprises a controller, which is connected with the signal acquisition and transmission module.

[0012] According to a second aspect of the present application, a device is provided, which is configured with the noise reduction system described above.

[0013] Optionally, the device is a vehicle-mounted air conditioning device, and the at least one signal acquisition sub-module is arranged at at least one of an upstream position, a middle position and a downstream position of air direction of the vehicle-mounted air conditioning device.

[0014] According to a third aspect of the present application, a vehicle is provided, which is configured with the noise reduction system described above.

[0015] Some embodiments of the present application at least have the following beneficial effects: the noise reduction system comprising the at least one signal acquisition and transmission module can improve the noise reduction effect, wherein the signal acquisition and transmission module comprises at least one signal transceiving sub-module and at least one signal acquisition sub-module arranged separately, and any one of the signal transceiving sub-modules is connected with one or more of the signal acquisition sub-modules. Thus, the at least one signal acquisition sub-module can be arranged relatively flexibly according to actual noise reduction requirements, the at least one signal transceiving sub-module can be arranged flexibly according to actual structure of the device to be reduced in noise, and one signal transceiving sub-module can be connected with one or more signal acquisition sub-modules, which greatly improves the arrangement flexibility of the noise reduction system.

[0016] Other features and advantages of the present application will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0019] Figure 1 is a structural schematic diagram of an embodiment of the noise reduction system provided by the present application;

[0020] Figure 2 is a structural schematic diagram of another embodiment of the noise reduction system provided by the present application;

[0021] Figure 3 is a structural schematic diagram of another embodiment of the noise reduction system provided in the present application;

[0022] Figure 4 is a structural schematic diagram of an embodiment of the signal acquisition sub-module provided in the present application;

[0023] Figure 5 is a structural schematic diagram of an embodiment of the signal transceiving sub-module provided in the present application;

[0024] Figure 6 is a structural schematic diagram of an embodiment of the signal acquisition and transmission module provided in the present application;

[0025] Figure 7 is a structural schematic diagram of an embodiment of the device to be reduced in noise provided in the present application;

[0026] Figure 8 is a structural schematic diagram of another embodiment of the device to be reduced in noise provided in the present application;

[0027] Figure 9 is a structural schematic diagram of an embodiment of the vehicle-mounted air conditioning device provided in the present application;

[0028] Figure 10 is a structural schematic diagram of another embodiment of the vehicle-mounted air conditioning device provided in the present application;

[0029] Figure 11 is a structural schematic diagram of another embodiment of the vehicle-mounted air conditioning device provided in the present application. DETAILED DESCRIPTION

[0030] The present application will be further described below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0031] In the description of the present application, it is understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise specified, the above orientation description can be flexibly arranged in the process of actual application, as long as the relative positional relationship shown in the drawings is met.

[0032] The terms "first", "second", etc. are used only to describe purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0033] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "communicating" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the embodiments of the present application, the terms "including", "containing" or any other variants thereof are intended to cover non-exclusive containing, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, article or device including the element.

[0035] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0036] The following are described in detail respectively. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0037] In the embodiments of the present application, a noise reduction system is proposed, please refer to Figure 1 The structure schematic diagram of an embodiment of the noise reduction system provided in the present application is shown in Figure 1As shown, the noise reduction system of the embodiment includes at least one signal acquisition and transmission module 100, which can be connected to the controller 200 in series. The signal acquisition and transmission module 100 acquires noise signals such as device noise and / or environmental noise of the device to be noise reduced, and sends the acquired noise signals to the controller 200. The controller 200 processes the noise signals to generate reverse signals of the noise signals, and further sends the generated reverse signals to the loudspeaker for playing, so as to realize the cancellation of the noise signals and the noise reduction processing of the device to be noise reduced. Figure 2 As shown, the at least one signal acquisition and transmission module 100 can also be connected to the controller 200 in parallel. The controller 200 can be a controller of the noise reduction system, or can be a controller of the device to be noise reduced, which is not specifically limited in the present application.

[0038] Further, in the embodiment, the signal acquisition and transmission module includes at least one signal transceiving submodule and at least one signal acquisition submodule which are separately arranged, and any one signal transceiving submodule is connected to one or more of the at least one signal acquisition submodule. As shown, Figure 3 As shown, each signal transceiving submodule 101 is connected to at least one signal acquisition submodule 102. Further, in the embodiment, the signal transceiving submodule 101 can be an A2B transceiving module, and the signal acquisition submodule 102 can be a signal acquisition element such as a microphone element, a sensor element, etc. The embodiment is exemplarily described by taking the sensor element as an example. The signal transceiving submodule 101 is also connected to the controller 200 to send the processed noise signals to the controller 200. The signal transceiving submodule 101 is an A2B transceiving module, which is connected to the controller 200 through an A2B bus. The A2B bus adopts a twisted pair line, which can have good anti-interference ability.

[0039] Further, in the embodiment, the signal transceiving submodule 101 and the signal acquisition submodule 102 are separately arranged, i.e., they are independently arranged submodules, which can be independently packaged devices. Please refer to Figure 4 The structure schematic diagram of an embodiment of the signal acquisition submodule provided in the present application is shown in Figure 4As shown, the signal collection element can be installed on a PCB by welding, clamping, plugging and the like, for collecting the noise signal generated by the equipment to be de-noised. The application does not limit the installation mode of the signal collection element. In addition, the PCB can also integrate a signal conditioning circuit, such as setting capacitors, resistors and the like, for optimizing the noise signal collected by the signal collection element, such as signal amplification, signal de-noising and the like, which can optimize the noise signal collected by the signal collection element and improve the quality of the noise signal to improve the de-noising effect. The signal collection sub-module is set as a separate sub-module in this embodiment, and too many devices can not be set in the signal collection sub-module, thereby realizing the miniaturization and flattening of the signal collection sub-module. The small signal collection sub-module can greatly reduce the layout environment restriction and can be arranged in the narrow area, curved area and other space of the equipment to be de-noised.

[0040] Further, please refer to Figure 5 The structure schematic diagram of an embodiment of the signal transceiving sub-module provided by the application is as shown in Figure 5 As shown, the signal transceiving sub-module 101 can include a signal processing device (the signal transceiving sub-module 101 is an A2B transceiving module in this embodiment, and the signal processing device can be an A2B chip), which can be installed on a PCB by welding, clamping, plugging and the like. The signal transceiving sub-module 101 can integrate a microcontroller, a power management circuit and a common mode inductor and the like, wherein the A2B chip is responsible for data encoding, decoding and transmission control; the microcontroller is used for managing the working state of the module, such as setting the sampling rate, gain and other parameters of the sensor module; the common mode inductor is used for suppressing the interference of external electromagnetic radiation on the signal to ensure stable data transmission; and the power management circuit provides stable power supply for each component inside the module. In addition, the signal transceiving sub-module 101 of this embodiment also integrates a connector. The signal transceiving sub-module 101 is connected with a plurality of signal collection sub-modules 102 through the connector. As Figure 6As shown, the signal transceiving sub-module 101 is connected with the at least one signal collecting sub-module 102 through a connector by a wire harness to receive the noise signal sent by the signal collecting sub-module 102. In the embodiment of the present application, the wire harness between the signal collecting sub-module 102 and the signal transceiving sub-module 101 can be designed as a short-distance and small-diameter wire harness, which can avoid affecting the overall wiring. In the embodiment, the length of the wire harness can be set based on its signal transmission efficiency and anti-interference ability, for example, it can be less than or equal to 20 cm, 30 cm, etc. If the transmission efficiency and anti-interference ability of the wire harness can be improved, the length of the wire harness can also be greater than 20 cm, 30 cm, etc. In the embodiment, the wire harness can use a shielded wire to reduce the influence of external electromagnetic interference on signal transmission. One end of the wire harness is connected with the PCB of the signal collecting sub-module 102 through a connector, and the other end is connected with the input interface of the signal transceiving sub-module 101 through a connector. The signal transceiving sub-module 101 performs digital-to-analog conversion on the received noise signal, encodes it according to the transmission communication protocol (such as A2B protocol), and sends the processed noise signal to the controller, so that the controller generates a reverse sound signal based on the received noise signal, and plays the reverse sound signal of the noise signal through the loudspeaker to cancel the noise generated by the device, thereby achieving active noise reduction. In another embodiment, the signal transceiving sub-module 101 and the signal collecting sub-module 102 can be respectively provided with wireless transmission devices, and the two can perform wireless transmission of noise signals through the wireless transmission devices.

[0041] In the present application, the signal transceiving sub-module and the signal collecting sub-module are separately arranged, and the two are connected and communicated through a wire harness or a wireless manner. Therefore, the arrangement position of the signal transceiving sub-module is not limited by the signal collecting sub-module, and the signal collecting sub-module can be arranged in a narrow area, a curved area, or other space areas, while the signal transceiving sub-module can be arranged at a position with relatively sufficient space and convenient maintenance; the layout flexibility of the noise reduction system is improved, and the noise reduction effect is enhanced. In addition, the separate arrangement of the signal transceiving sub-module and the signal collecting sub-module can realize the connection of any one signal transceiving sub-module with one or more signal collecting sub-modules, increase the number of signal collecting sub-modules without increasing the total link, realize the one-to-many layout mode of the signal transceiving sub-module and the signal collecting sub-module, increase the number of noise collecting channels, improve the overall perception ability of noise, and improve the noise reduction effect.

[0042] Further, in the noise reduction device in the embodiment of the present application, the at least one signal collecting sub-module of the signal collecting and transmitting module can be arranged in the same partition of the device to be reduced in noise. The partition can be defined as a position partition, a function partition, etc. by position, function, etc. Referring to Figure 7 , Figure 7Fig. 1 is a structural schematic diagram of an embodiment of a to-be-noise-reduced device according to the present application, and the to-be-noise-reduced device is provided with the noise reduction system. In this embodiment, the to-be-noise-reduced device is an air conditioning device, and the partitions are taken as location partitions for example. An air outlet area facing the left upper side can be defined as a left upper air outlet partition, and an air outlet area facing the right upper side can be defined as a right upper air outlet partition. In this embodiment, a signal acquisition and transmission module is arranged in each partition, and the signal acquisition and transmission modules are arranged in the same partition. As shown in Fig. 1, the left upper air outlet partition has two air outlets, and a signal acquisition submodule is arranged at each air outlet. The two signal acquisition submodules are connected to a signal transceiving submodule arranged in the same partition. Similarly, the right upper air outlet partition has two air outlets, and a signal acquisition submodule is arranged at each air outlet. The two signal acquisition submodules are connected to a signal transceiving submodule arranged in the same partition. In another embodiment, the signal transceiving submodule can not be arranged in the same partition as the signal acquisition submodule connected thereto, but can be arranged at another position with sufficient space and convenient maintenance. This embodiment does not limit this. Figure 7

[0043] Further, in the noise reduction device in this embodiment, at least one signal acquisition submodule of the signal acquisition and transmission module can be arranged in different partitions of the to-be-noise-reduced device. The partitions can be defined as location partitions, function partitions, etc. by location, function, etc. Referring to Fig. 1, the left upper air outlet partition and the right upper air outlet partition are taken as location partitions for example. The left upper air outlet partition has two air outlets, and a signal acquisition submodule is arranged at each air outlet. The two signal acquisition submodules are connected to a signal transceiving submodule arranged in the same partition. Similarly, the right upper air outlet partition has two air outlets, and a signal acquisition submodule is arranged at each air outlet. The two signal acquisition submodules are connected to a signal transceiving submodule arranged in the same partition. In another embodiment, the signal transceiving submodule can not be arranged in the same partition as the signal acquisition submodule connected thereto, but can be arranged at another position with sufficient space and convenient maintenance. This embodiment does not limit this. Figure 8 Figure 8 Fig. 2 is a structural schematic diagram of another embodiment of a to-be-noise-reduced device according to the present application. In this embodiment, the to-be-noise-reduced device is an air conditioning device, and the partitions are taken as location partitions for example. An air outlet area facing the left upper side can be defined as a left upper air outlet partition, and an air outlet area facing the right upper side can be defined as a right upper air outlet partition. In this embodiment, a signal acquisition and transmission module is arranged in each partition, and the signal acquisition and transmission modules are arranged in different partitions. As shown in Fig. 2, the left upper air outlet partition has two air outlets, and a signal acquisition submodule is arranged at each air outlet. Similarly, the right upper air outlet partition has two air outlets, and a signal acquisition submodule is arranged at each air outlet. The signal acquisition submodules arranged at the air outlets of the left upper air outlet partition and the right upper air outlet partition are connected to a same signal transceiving submodule. The signal transceiving submodule can be arranged in the left upper air outlet partition or the right upper air outlet partition. In another embodiment, the signal transceiving submodule can not be arranged in the same partition as the signal acquisition submodule connected thereto, but can be arranged at another position with sufficient space and convenient maintenance. This embodiment does not limit this. Figure 8

[0044] ​​​In summary, at least one signal acquisition sub-module in the embodiment can be arranged in different partitions, and the signal acquisition and transmission module is arranged separately, so that the signal acquisition and transmission module can be flexibly arranged, and each signal acquisition and transmission module can be connected with multiple signal acquisition sub-modules, the number of signal acquisition sub-modules can be increased without increasing the main link, and the cost is well controlled while the noise reduction efficiency is improved.

[0045] Further, the application provides a device provided with the above noise reduction system, which can be an air conditioning device, an air purification device, a fragrance device, a communication device, etc. For example, the vehicle-mounted air conditioning device has an air duct, which can be divided into an upstream, a middle and a downstream according to the wind direction. The signal acquisition sub-module of the noise reduction system can be arranged at at least one of the upstream, the middle and the downstream of the vehicle-mounted air conditioning device.

[0046] With the vehicle-mounted air conditioning equipment as an example, the embodiment is described, the vehicle-mounted air conditioning equipment is configured with a noise reduction system, the noise reduction system comprises a plurality of signal acquisition and transmission modules, each signal acquisition and transmission module of the plurality of signal acquisition and transmission modules comprises at least one signal transceiving submodule and at least one signal acquisition submodule which are separately arranged, any one signal transceiving submodule is connected with one or more of the at least one signal acquisition submodule, and further, each signal acquisition and transmission module comprises the signal transceiving submodule and a plurality of signal acquisition submodules connected with the signal transceiving submodule and separately arranged. The vehicle-mounted air conditioning equipment can be functionally partitioned, for example, a face blowing partition, a foot blowing partition and a defrosting partition; each functional partition can have a corresponding air duct, the air duct can be an independent air duct formed by independent pipes, or can be a plurality of air ducts formed by separating the whole cavity by a partition plate, the air duct has a corresponding air direction, and based on the air direction flow, the air direction can be divided into an air direction upstream, an air direction midstream and an air direction downstream. Each signal acquisition and transmission module can be arranged in each partition of the vehicle-mounted air conditioning equipment, and correspondingly, the at least one signal acquisition submodule of the signal acquisition and transmission module is arranged in the same functional partition of the vehicle-mounted air conditioning equipment, and the signal transceiving submodule connected with the at least one signal acquisition submodule can be arranged in the same functional partition as the signal acquisition submodule or in different functional partitions. In addition, the at least one signal acquisition submodule of the signal acquisition and transmission module can also be arranged in different functional partitions of the vehicle-mounted air conditioning equipment, and the signal transceiving submodule connected with the at least one signal acquisition submodule can be arranged in the same functional partition as any one of the plurality of signal acquisition submodules or in different functional partitions from the plurality of signal acquisition submodules. In addition, each signal acquisition and transmission module can also have a plurality of signal transceiving submodules, and the plurality of signal transceiving submodules can be arranged in the same functional partition of the vehicle-mounted air conditioning equipment, or at least part of the plurality of signal transceiving submodules can be arranged in different functional partitions.

[0047] The embodiment arranges the noise reduction system in the form of regional deployment, the number of signal transceiving submodules required by the plurality of signal acquisition submodules in the same region or adjacent regions can be reduced compared with the number of signal acquisition submodules, the number of signal transceiving submodules is saved, and the cost can be saved. In addition, the arrangement of the signal acquisition submodule can be more in line with the noise characteristics of different regions, noise acquisition and processing can be targeted, the noise reduction efficiency and the targeting of the noise reduction system are improved, and the noise reduction effect is further optimized.

[0048] Please refer to Figure 9 , the structural schematic diagram of an embodiment of the vehicle-mounted air conditioning equipment proposed in the application, such as Figure 9As shown, the vehicle-mounted air conditioning device is a vehicle-mounted front compartment air conditioning device 500, which is functionally partitioned, each functional partition having a corresponding air duct. The air duct can be an independent air duct formed by independent pipes, or multiple air ducts separated by a partition in the overall cavity. The present application does not make any limitation. In this embodiment, an independent air duct formed by independent pipes is taken as an example. Each air duct is divided into an upstream, a middle stream and a downstream based on the air direction. In this embodiment, the vehicle-mounted front compartment air conditioning device 500 can be functionally partitioned based on functions, and can be divided into a left blowing surface partition 503, a right blowing surface partition 505, a left defrosting partition 502, a right defrosting partition 504, a front defrosting partition 501, a left foot blowing partition and a right foot blowing partition (not shown in the foot blowing partition diagram). A plurality of sensors 3 (i.e. signal acquisition sub-modules) are arranged in the left blowing surface partition 503, and the plurality of sensors 3 are arranged at the middle stream and the downstream of the air duct of the left blowing surface partition 503 (at the bending part of the air duct and at the left blowing surface air outlet). An A2B module 3 (i.e. a signal transceiver sub-module) arranged in the left blowing surface partition 503 is connected with the plurality of sensors 3. A plurality of sensors 2 are arranged in the left defrosting partition 502, and the plurality of sensors 2 are arranged at the upstream and the downstream of the air duct of the left defrosting partition 502 (at the air inlet of the left defrosting partition and at the air outlet of the left defrosting partition). An A2B module 2 arranged in the left defrosting partition is connected with the plurality of sensors 2. A plurality of sensors 5 (i.e. signal acquisition sub-modules) are arranged in the right blowing surface partition 505, and the plurality of sensors 5 are arranged at the middle stream and the downstream of the air duct of the right blowing surface partition 505 (at the bending part of the air duct and at the right blowing surface air outlet). An A2B module 5 (i.e. a signal transceiver sub-module) arranged in the right blowing surface partition 505 is connected with the plurality of sensors 5. A plurality of sensors 4 are arranged in the right defrosting partition 504, and the plurality of sensors 4 are arranged at the upstream and the downstream of the air duct of the right defrosting partition 504 (at the air inlet of the right defrosting partition and at the air outlet of the right defrosting partition). An A2B module 4 arranged in the right defrosting partition is connected with the plurality of sensors 4. A plurality of sensors 1 are arranged in the front defrosting partition 501, and the plurality of sensors 1 are arranged at the downstream of the air duct of the front defrosting partition 501 (at the air outlet of the front defrosting partition). An A2B module 1 arranged in the front defrosting partition 501 is connected with the plurality of sensors 1.

[0049] Figure 9 The noise reduction system shown in the embodiment shown arranges 10 sensors, and according to the embodiment, 10 sensors only need 5 A2B modules. The number of A2B modules required is greatly less than the number of sensors arranged, and the cost can be saved. In addition, the A2B module and the sensor are arranged separately, the sensor can be arranged in a narrow area, a curved area and other space areas, the arrangement of the noise detection position can be increased, and the noise reduction effect can be improved.

[0050] Further, please refer to Figure 10This is a schematic diagram of another embodiment of the vehicle air conditioning equipment of this application, as shown below. Figure 10 As shown, the vehicle air conditioning equipment is the vehicle front cabin air conditioning equipment 500. The zoning and sensor arrangement of the vehicle front cabin air conditioning equipment 500 in this embodiment can be referred to Figure 9 The illustrated embodiment will not be described in detail here. In this embodiment, sensors arranged in adjacent zones can be connected to the same A2B module, thereby further reducing the number of A2B modules required. Figure 10 As shown, the left defrost zone 502 and the left blowing zone 503 are adjacent zones. Multiple sensors 2 and multiple sensors 3 are respectively installed in the left defrost zone 502 and the left blowing zone 503. The multiple sensors 2 are respectively located upstream (at the air inlet of the left defrost zone) and downstream (at the air outlet of the left defrost zone) of the air duct in the left defrost zone 502. The multiple sensors 3 are respectively located midway (at the bend in the air duct) and downstream (at the air outlet of the left blowing zone) of the air duct in the left blowing zone 503. Both the multiple sensors 2 and multiple sensors 3 are connected to the A2B module 3 installed in the left blowing zone 503. In other embodiments, the A2B module 3 may also be installed in the left defrost zone 502, or in other zones besides the left defrost zone 502 and the left blowing zone 503; this application does not impose specific limitations. The right defrost zone 504 and the right blowing zone 505 are adjacent zones. Multiple sensors 4 and multiple sensors 5 are respectively installed in the right defrost zone 504 and the right blowing zone 505. The multiple sensors 5 are respectively installed in the middle (where the air duct bends) and the downstream (where the right blowing zone air outlet) of the air duct of the right blowing zone 505. The multiple sensors 4 are respectively installed in the upstream (where the right defrost zone air inlet) and the downstream (where the right defrost zone air outlet) of the air duct of the right defrost zone 504. The multiple sensors 4 and multiple sensors 5 are all connected to the A2B module 5 installed in the right blowing zone 505. In other embodiments, the A2B module 5 may also be installed in the right defrost zone 504, or in other zones other than the right defrost zone 504 and the right blowing zone 504. This application does not impose specific limitations. Multiple sensors 1 are installed in the front defrost partition 501. All sensors 1 are located downstream of the airflow direction of the air duct of the front defrost partition 501 (at the air outlet of the front defrost partition). The A2B module 1 installed in the front defrost partition 501 is connected to the multiple sensors 1.

[0051] Figure 10 The noise reduction system shown in the illustrated embodiment employs 10 sensors. However, according to this embodiment, only 3 A2B modules are needed for these 10 sensors, further reducing the required number of A2B modules and significantly lowering the implementation cost. Furthermore, the A2B modules and sensors are separated, allowing the sensors to be placed in narrow, curved, or other spatial areas, increasing the number of noise detection locations and improving the noise reduction effect.

[0052] Please refer to Figure 11 , the structure schematic diagram of another embodiment of the vehicle-mounted air conditioning equipment in the application is shown in the figure Figure 11 , the vehicle-mounted air conditioning equipment is a vehicle-mounted rear cabin air conditioning equipment 600, which is generally used for blowing the faces of the middle row or the middle row and the rear row passengers, and some vehicles can see the blowing faces and the blowing feet. The vehicle-mounted rear cabin air conditioning equipment 600 is divided into functional zones according to functions, and each functional zone has a corresponding air duct. The air duct can be an independent air duct formed by independent pipes, or a plurality of air ducts separated by a partition in the whole cavity. The application does not make any limitation. In this embodiment, the independent air duct formed by the independent pipes is taken as an example. Each air duct is divided into an upstream of the air direction, a middle stream of the air direction and a downstream of the air direction based on the air direction. In this embodiment, the vehicle-mounted rear cabin air conditioning equipment 600 can be functionally divided into functional zones, which can be divided into a left middle and rear row face blowing partition 601, a right middle and rear row face blowing partition 602, a left middle and rear row foot blowing partition 603, a right middle and rear row foot blowing partition 604 and a connecting pipe partition 605. A plurality of sensors 1 (i.e. signal acquisition sub-modules) are arranged in the left middle and rear row face blowing partition 601. The plurality of sensors 1 are respectively arranged at the upstream of the air direction of the air duct of the left middle and rear row face blowing partition 601 (at the air inlet of the left middle and rear row face blowing partition 601) and at the downstream of the air direction of the air duct of the left middle and rear row face blowing partition 601 (at the air outlet of the left middle and rear row face blowing partition 601). The plurality of sensors 1 are connected with an A2B module 1 arranged in the left middle and rear row face blowing partition 601 (the A2B module 1 can also be arranged at other positions outside the left middle and rear row face blowing partition 601). In this embodiment, the right middle and rear row face blowing partition 602, the left middle and rear row foot blowing partition 603 and the right middle and rear row foot blowing partition 604 can be respectively arranged according to the layout of the sensors and the A2B module of the left middle and rear row face blowing partition 601. Here, no further description is given. Further, a plurality of sensors 5 are arranged in the connecting pipe partition 605, and the plurality of sensors 5 are connected with an A2B module 5 arranged in the connecting pipe partition 605.

[0053] In this embodiment, the left middle and rear row face blowing partition 601, the right middle and rear row face blowing partition 602, the left middle and rear row foot blowing partition 603 and the right middle and rear row foot blowing partition 604 are respectively arranged in the vehicle cabin. The left middle and rear row face blowing partition 601 and the right middle and rear row face blowing partition 602 are usually arranged at the two sides of the vehicle roof. Based on the current wiring harness limitation, the left middle and rear row face blowing partition 601 and the right middle and rear row face blowing partition 602 are respectively provided with an A2B module, and the sensors of each partition are respectively connected with the A2B module of the partition. If the signal transmission efficiency is improved, the sensors in the two partitions can be connected with the same A2B module. The left middle and rear row foot blowing partition 603 and the right middle and rear row foot blowing partition 604 are arranged in the same way. Here, no further description is given.

[0054] In the vehicle rear cabin air conditioning unit 600 of this embodiment, the space that the air duct can accommodate is small and there are many surrounding electrical components. For example, the anti-phase sound waves played by the ceiling speakers may be directly picked up by nearby sensors, causing the noise signal collected by the sensors to be mixed with processed anti-phase sound waves instead of the original noise, resulting in acoustic and electromagnetic interference, and ultimately reducing the signal-to-noise ratio collected by the sensors. However, by setting separate sensors and A2B modules, small sensors can be placed in narrow collection points and avoid electrical components that may cause interference.

[0055] The above provides a detailed description of a noise reduction system, device, and vehicle provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A noise reduction system, characterized by, The application relates to a noise reduction system. The signal acquisition and transmission module comprises at least one signal acquisition sub-module and at least one signal transceiving sub-module. The signal acquisition sub-modules of the signal acquisition and transmission module are arranged in the same partition of the equipment to be reduced in noise; or at least part of the signal acquisition sub-modules of the signal acquisition and transmission module are arranged in different partitions of the equipment to be reduced in noise.

2. The noise reduction system of claim 1, wherein, At least one signal transceiving sub-module of the signal acquisition and transmission module is arranged in the same partition as at least part of the signal acquisition sub-modules connected to the signal transceiving sub-module, or is arranged in different partitions from the signal acquisition sub-modules connected to the signal transceiving sub-module.

3. The noise reduction system of claim 1, wherein, At least one signal acquisition sub-module of the signal acquisition and transmission module is arranged in the same partition of the equipment to be reduced in noise, and at least part of the signal acquisition sub-modules are arranged at different positions in the same partition.

4. The noise reduction system of claim 1, wherein, Any signal transceiving sub-module is connected to one or more signal acquisition sub-modules in a wire harness mode or a wireless mode.

5. The noise reduction system of claim 1, wherein, The signal acquisition and transmission module is connected to a controller in a series mode.

6. The noise reduction system of claim 1, wherein, The application further relates to a controller connected to the signal acquisition and transmission module.

7. The noise reduction system of claim 1, wherein, The application relates to a noise reduction system.

8. An apparatus, comprising: The equipment is a vehicle-mounted air conditioner, and the at least one signal acquisition sub-module is arranged at at least one position upstream, in the middle or downstream of the air direction of the vehicle-mounted air conditioner.

9. The apparatus of claim 8, wherein, The application relates to a noise reduction system.

10. A vehicle characterized by comprising: ​

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