Active suppression of noise in a vehicle

Abstract

The invention relates to a method for actively suppressing noise in a vehicle (10), comprising: detecting (S10) vehicle state data describing a state of the vehicle, in particular a current state, comprising at least a speed of the vehicle, a gear of the vehicle, a rotational speed of at least one rotating component of the vehicle, and at least one temperature; determining (S20) activation data, the activation data describing whether the determined vehicle state data matches a predetermined range and / or a plurality of predetermined ranges; the active suppression noise is activated (S30) based on the determined activation data.

Description

Technical Field

[0001] The present invention relates to a method and system for actively suppressing noise in a vehicle, and in particular a computer program or product. Background Technology

[0002] Noise may occur in a vehicle, especially while it is in motion, and this noise may be perceived as a disturbance by the driver or passengers of the vehicle. Summary of the Invention

[0003] The purpose of this invention is to improve the noise background in vehicles, particularly to reduce noise in the interior space of vehicles.

[0004] The solution to this objective is achieved according to the teachings of the independent claims. Different embodiments and further improvements of the invention are the subject of the dependent claims.

[0005] According to one embodiment of the present invention, a method for actively suppressing noise in a vehicle is provided. In one embodiment, the method includes detecting vehicle state data, particularly using at least one sensor and / or particularly evaluating data from an ECU. In one embodiment, the vehicle state data describes the state of the vehicle, particularly its current state. In one embodiment, the vehicle state data at least describes the speed of the vehicle, particularly its current speed. In one embodiment, the vehicle state data additionally or alternatively describes the gear position of the vehicle, particularly when the vehicle has a shiftable transmission with one or more gears. In one embodiment, the vehicle state data additionally or alternatively describes the rotational speed of at least one rotating component of the vehicle. In one embodiment, the vehicle state data additionally or alternatively describes at least one temperature, particularly at least one temperature of a component of the vehicle or the temperature of the environment. In one embodiment, the method includes determining activation data. In one embodiment, the activation data describes whether the determined vehicle state data matches or falls within a predetermined range or multiple predetermined ranges, particularly falling within or matching a predetermined range or multiple predetermined ranges of the vehicle state's state space, particularly falling within a predetermined range of speed and / or a predetermined range of gear and / or a predetermined range of rotational speed of at least one rotating component of the vehicle and / or a temperature range. In one embodiment, the method further includes: activating active noise suppression based on the determined activation data, particularly within the vehicle's interior space, especially when the determined activation data describes the vehicle state data matching or falling within one or more predetermined ranges. In one embodiment, the method further includes deactivating the active noise suppression based on the determined activation data, particularly within the vehicle's interior space. In one embodiment, the method further includes placing the active noise suppression in an energy-saving mode based on the determined activation data. In one embodiment, the energy-saving mode specifically reduces the CPU clock frequency and / or the analysis frequency of the active noise suppression.

[0006] Thus, in one implementation, it is advantageous to deactivate active noise suppression, particularly when or only when the activation data describing vehicle state data matches or falls within one or more predetermined ranges. Advantageously, in one implementation, this reduces the energy required or used for monitoring noise in the vehicle interior space, particularly compared to methods for active noise suppression that are at least substantially always active and particularly independent of vehicle state data and / or activation data.

[0007] In one implementation, vehicle components may include universal joints, generators, wheels, refrigerant compressors, compressors, especially refrigerant compressor compressors, components typically installed in the vehicle as structural components, and so on.

[0008] In one embodiment, the predetermined range and / or the plurality of predetermined ranges correspond to a first-order humming sound of at least one vehicle component. In one embodiment, the predetermined range and / or the plurality of predetermined ranges additionally or alternatively correspond to a second-order humming sound of at least one vehicle component. In one embodiment, the predetermined range and / or the plurality of predetermined ranges additionally or alternatively correspond to a superimposed humming sound from at least two vehicle components, particularly to a superimposed humming sound from at least two vehicle components having the same and / or different orders of humming sound.

[0009] Thus, in one embodiment, the activation of active noise suppression can advantageously be limited to acoustically perceptible natural frequencies of one or more vehicle components, particularly to the superposition of acoustically perceptible natural frequencies. Advantageously, this enables in one embodiment the setting of the computing power of the controller (“electronic control unit”; ECU) for active noise suppression to be released and / or freed, requiring particularly less computing power, when active noise suppression, particularly based on activation data, is (temporarily) deactivated.

[0010] In one embodiment, the humming includes a regenerated humming from the vehicle's generator, particularly within a predetermined range as described herein, or a corresponding regenerated humming. In one embodiment, the humming (additionally or alternatively) includes a suspended humming, particularly a superposition of suspended humming from at least two vehicle components, particularly acoustic emission and / or acoustically perceptible inherent vibrations, or a corresponding suspended humming. In one embodiment, the humming (additionally or alternatively) includes a humming from the refrigerant compressor, particularly acoustic emission and / or acoustically perceptible inherent vibrations, or a corresponding humming.

[0011] In one embodiment, the regenerative hum is a first-order excitation of the universal joint during inertial coasting operation, particularly at at least 50 km / h and / or at most 60 km / h, which specifically corresponds to or may correspond to at most 1900 and / or at least 800 revolutions per minute of the universal joint. In one embodiment, the regenerative hum is generated by a regenerative deceleration torque from a generator.

[0012] In one implementation, the levitating hum is a superposition of the second order of the omnidirectional shaft and the wheel order at speeds of at least 90 km / h and / or at most 100 km / h.

[0013] In one implementation, the humming sound of the refrigerant compressor corresponds to a slight mechanical decoupling, through which the first harmonic order of the refrigerant compressor is transmitted to the internal space.

[0014] In one implementation, there are multiple (acoustic) problems to be computed, which do not occur in parallel with each other, at least not substantially, yet typically result in full CPU load in currently available software solutions, particularly in the controller. Advantageously, in one implementation, the CPU load, particularly in the controller, can be reduced, especially such that the processor is "loaded" (only) based on active data in one implementation. In one implementation, this can thereby reduce the CPU load by more than 40%, particularly more than 60%, especially compared to solutions in which active noise suppression is at least substantially permanently activated.

[0015] Advantageously, in one embodiment, it can be achieved by the method described herein: targeted active suppression or suppression of noise from acoustic (perceptible) emissions or inherent vibrations of vehicle components and / or structural assemblies, and in particular, activation of active noise suppression when, in particular only when the vehicle has the following vehicle state, in which the acoustic emissions occur or may occur.

[0016] In one embodiment, the method includes: deactivating or activating at least one sensor, particularly all sensors, specifically based on activation data. In one embodiment, the method includes: deactivating or activating at least one sensor, particularly all sensors, that are not involved in detecting vehicle state data, particularly based on activation data. In one embodiment, the method includes: deactivating or activating at least one sensor, particularly all sensors, that are not involved in detecting vehicle state data, particularly based on activation data, wherein the one and / or more sensors are associated with or used for active noise suppression in the vehicle. In one embodiment, when noise suppression is deactivated, the at least one sensor is deactivated, particularly based on activation data.

[0017] Advantageously, this can be achieved in one embodiment by further reducing energy consumption, particularly by requiring less energy or no energy at all for the sensors, especially if the activation data does not match the vehicle state data with the one and / or the plurality of predetermined ranges, or by determining that the activation data has been obtained or has been obtained. In other words, in one embodiment, this can be achieved by deactivating at least one sensor, and in particular all sensors, associated with active noise suppression in the vehicle, based on the activation data, especially if the activation data does not match the vehicle state data with the one and / or the plurality of predetermined ranges, or by determining that the activation data has been obtained or has been obtained.

[0018] In one embodiment, the method includes: particularly when it is determined from activation data that vehicle state data has left or will leave said one predetermined range and / or said multiple predetermined ranges, particularly within a predetermined prediction time period of the activation data, particularly based on the activation data, activating at least one sensor, particularly all sensors. In another embodiment, the method includes: particularly when it is determined from activation data that vehicle state data has reached, is reaching, or will reach said one predetermined range and / or said multiple predetermined ranges, particularly within a predetermined prediction time period of the activation data, particularly within a prediction time period of less than one second, further particularly less than 10 milliseconds, particularly based on the activation data, activating at least one sensor, particularly all sensors.

[0019] Thus, in one embodiment, it is advantageous to activate and / or activate active noise suppression or an active noise-suppressing sensor, particularly based on activation data, and if active noise suppression is not activated or during the period when active noise suppression is not activated, it is particularly advantageous to save energy used to operate the sensor, and in particular only when active noise suppression is activated, particularly based on activation data, energy is consumed by the sensor.

[0020] In one embodiment, the method includes: specifically based on activation data, deactivating at least one device or apparatus of the vehicle that is related to or involved in noise suppression.

[0021] In one embodiment, the method includes, in particular, activating at least one device or apparatus of the vehicle that is related to or involved in noise suppression, specifically based on activation data.

[0022] Thus, in one implementation, energy consumption, particularly the total energy consumption of the vehicle, can be advantageously (further) reduced, especially when noise suppression, particularly based on activation data, is ineffective or not activated.

[0023] In one implementation, such a device or apparatus may be an audio system, an audio amplifier, a loudspeaker, etc., in particular software together with corresponding hardware designed for the software, which is particularly associated with or compatible with active noise suppression.

[0024] In one implementation, the predetermined range and / or the plurality of predetermined ranges are derived or determined by means of simulation, by means of driving tests and / or by means of artificial intelligence, particularly dynamically, and especially particularly during vehicle operation. In one implementation, the artificial intelligence is trained by means of data from simulation and / or from driving tests, in particular such that the artificial intelligence learns ranges of vehicle states associated with higher acoustic emissions in the vehicle interior space, and these vehicle states are particularly traceable to the state (range) of at least one component of the vehicle and / or the state (range) of at least one combination of components or correspond to said state (range).

[0025] Thus, in one implementation, a smaller predetermined range can be advantageously determined, particularly the range when active noise suppression is not activated can be larger than that when active noise suppression is always activated, and thus greater energy savings can be achieved.

[0026] In one implementation, the method further includes outputting a destructive interference achieved through activated active noise suppression, particularly based on (determined) activation data.

[0027] In one embodiment, the method includes detecting interior space sound using at least one sensor, particularly at least one microphone, especially when active noise suppression is activated or in effect, and particularly based on activation data. In another embodiment, the method further includes modulating, particularly matching, active noise suppression or outputting active noise suppression based on the detected interior space sound.

[0028] Thus, in one embodiment, particularly during the activation of active noise suppression (especially based on activation data), a feedback loop for noise suppression during activation can be implemented, and in particular, the at least one sensor can be used for this, so that in one embodiment, active noise suppression during activation can be improved, and in particular, the noise inside the vehicle can be further or better reduced or reduced.

[0029] Here, within the scope of the invention, it is possible to perform the method steps described above in a different order and / or combine the method steps and / or integrate one method step into another method step.

[0030] According to one embodiment of the present invention, a system for actively suppressing noise in a vehicle is provided. In one embodiment, the system is configured to implement the methods described herein and / or include: means for detecting vehicle state data; means for determining activation data; and / or means for activating active noise suppression, particularly means for actively suppressing noise.

[0031] In one implementation, the device used to detect, in particular, vehicle status data, is a sensor.

[0032] The terms “comprising,” “including,” “containing,” “having,” “having,” “with,” or any other variations thereof, used herein where necessary, shall cover non-exclusive inclusion. For example, a method or apparatus that includes or has a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such a method or apparatus.

[0033] Furthermore, unless explicitly stated otherwise, "or" refers to an inclusive "or," not an exclusive "or." For example, condition A or B is satisfied by one of the following conditions: A is true (or exists) and B is false (or does not exist), A is false (or does not exist) and B is true (or exists), and both A and B are true (or exist).

[0034] The term “a” or “one” as used herein is defined in the sense of “one or more”. The terms “another” and “an additional” and any other variations thereof shall be understood in the sense of “at least one additional”.

[0035] The system and / or apparatus in the sense of this invention can be constructed using hardware and / or software technology, particularly having at least one, preferably data- or signal-connected, processing unit, particularly a digital one, such as a microprocessor unit (CPU), graphics card (GPU), and / or one or more programs or program modules, connected to a memory and / or bus system. The processing unit can be configured to process instructions implemented as a program stored in a storage system, detect input signals via a data bus, and / or output output signals to a data bus. The storage system can have one or more, particularly different, storage media, particularly optical, magnetic, solid-state, and / or other non-volatile media. The program can be created such that it embodies or is capable of implementing the methods described herein, enabling the processing unit to implement the steps of such methods and thus, in particular, to operate or monitor the vehicle interior space, especially active noise suppression within the vehicle interior space.

[0036] In one embodiment, the computer program product may include, in particular, a storage medium, especially a computer-readable and / or non-volatile storage medium, for storing a program or instructions, or having a program or instructions stored thereon. In one embodiment, the program or instructions are implemented by a system or control device, in particular an arrangement of one or more computers, causing the system or control device, in particular the one or more computers, to perform one or more steps of the methods or steps described herein, or in other words, the program or instructions are set up for this purpose.

[0037] Computer programs can be stored, in particular, on non-volatile data carriers. This is preferably in the form of optical data carriers or flash memory modules. It may be advantageous if such a computer program is to be processed independently of a processor platform on which one or more programs can be implemented. In another implementation, the computer program can exist as a file on a data processing unit, particularly a server, and can be downloaded via a data connection, such as the Internet, or a dedicated data connection, such as a private or local area network. Furthermore, the computer program can have multiple cooperating individual program modules. In particular, these modules can be configured, or at least used, such that they are implemented on different devices (computers or processor units) in the sense of distributed computing, these devices being geographically separated from each other and interconnected via data networks.

[0038] The system may accordingly have a program memory in which computer programs are stored. Alternatively, the system may also be configured to access, via a communication connection, a computer program that is externally available, for example, on one or more servers or other data processing units, particularly for exchanging data with the computer program that is applied or implemented during the course of the method or during the course of the computer program, outputting the computer program.

[0039] In one implementation, one or more, particularly all, steps of the method are performed fully or partially automatically, particularly by a control device or its apparatus.

[0040] The features and advantages explained with reference to the methods described herein also apply to the system, and in particular to other aspects of the invention. Attached Figure Description

[0041] Further advantages, features, and applications of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0042] In the picture:

[0043] Figure 1A method for actively suppressing noise in a vehicle is schematically illustrated; and

[0044] Figure 2 A system for actively suppressing noise in a vehicle is illustrated schematically. Detailed Implementation

[0045] The components shown in the figures are not necessarily shown to scale. Rather, they are reproduced in such a way that their function and general purpose can be understood by those skilled in the art. The connections and couplings between functional units and components shown in the figures may also be implemented as indirect connections or couplings, unless otherwise explicitly stated. In particular, functional units may be implemented as hardware, software, or a combination of hardware and software.

[0046] Figure 1 This schematically illustrates a method for actively suppressing noise in a vehicle. Figure 1 Specifically, S10 schematically illustrates the detection of vehicle state data. In one embodiment, determining activation data S20 specifically includes matching the detected vehicle state data with one and / or more predetermined ranges, particularly for one or more components of the vehicle. Based on the determined activation data, activation S30 actively suppresses noise, particularly when the determined activation data matches the vehicle state data with said one and / or more predetermined ranges. Figure 1 The diagram also schematically illustrates, with dashed lines, the activation of at least one sensor based on the determined activation data in step S40. Furthermore, dashed lines also illustrate the output S50's destructive interference caused by actively suppressed noise (activated based on the determined activation data).

[0047] Figure 2 A system for actively suppressing noise in a vehicle is schematically illustrated. The system is shown in a vehicle 10 having an interior space 11, and it should be noted that the portion of the system shown here may also be arranged differently within the vehicle 10 in one embodiment. Furthermore, in Figure 2 The diagram schematically illustrates a device 12 for detecting vehicle status data, a device 13 for determining activation data, and a device 14 or 15 for activating active noise suppression. The device 12 for detecting vehicle status data is shown distributed throughout the vehicle, particularly because in one embodiment it relates to or may relate to sensors, particularly acceleration sensors, speed sensors, position sensors, acoustic sensors, etc., configured to detect or determine the at least one vehicle status. Device 12 is shown schematically... Figure 2 It is shown in a data connection with device 13 used to determine activation data. Figure 2In the illustration, the device 13 for determining activation data has a device 14 for activating active noise suppression and a device 15 for active noise suppression. In particular, the device 15 for active noise suppression may have at least one speaker, as exemplarily shown, and at least one sensor, in particular a microphone, for a feedback loop, particularly for active noise suppression.

[0048] At least one exemplary implementation has been described above, and it should be noted that numerous variations exist. It should also be observed that the described exemplary implementations are merely non-limiting examples and are not intended to limit the scope, applicability, or configuration of the devices and methods described herein. Rather, the foregoing description is intended to provide guidance to those skilled in the art for implementing at least one exemplary implementation, and it should be understood that different changes can be made to the function and arrangement of the elements described in the exemplary implementations without departing from the technical solutions and their legal equivalents as defined in the appended claims.

[0049] List of reference numerals

[0050] 10 vehicles

[0051] 12 Devices for detecting vehicle data

[0052] 13. Device for determining activation data

[0053] 14. Device for activation

[0054] S10 detects vehicle status data

[0055] S20 Determine Activation Data

[0056] S30 Activate, Deactivate, or Put into Power Saving Mode

[0057] S40 deactivates or activates at least one sensor

[0058] S50 Output Interference

Claims

1. A method for actively suppressing noise in a vehicle (10), comprising: Detect (S10) vehicle status data, wherein the vehicle status data describes the status of the vehicle (10), particularly the current status; Determine (S20) activation data, wherein the activation data describes whether the determined vehicle state data matches a predetermined range and / or multiple predetermined ranges; Based on the determined activation data, activate, deactivate, or place in an active noise suppression energy-saving mode (S30).

2. The method according to the preceding claims, characterized in that, The predetermined range and / or the plurality of predetermined ranges correspond to a first-order hum from at least one vehicle component, a second-order hum from at least one vehicle component, or a superimposed hum from at least two vehicle components.

3. The method according to any one of the preceding claims, characterized in that, The humming sound includes either the regenerative humming sound of the generator, the superimposed floating humming sound from at least two vehicle components, and / or the humming sound of the refrigerant compressor.

4. The method according to any one of the preceding claims, characterized in that, The method includes deactivating or activating (S40) at least one sensor, particularly all sensors, that do not participate in detecting vehicle status data based on activation data.

5. The method according to any one of the preceding claims, characterized in that, The predetermined range and / or the multiple predetermined ranges are determined by means of simulation, by means of driving tests and / or by means of artificial intelligence.

6. The method according to any one of the preceding claims, characterized in that, The method also includes output (S50) destructive interference achieved by activated active noise suppression.

7. The method according to any one of the preceding claims, characterized in that, The method also includes detecting interior space sound of the vehicle using at least one sensor, particularly at least one microphone, based on the activation data.

8. The method according to claim 7, characterized in that, The method includes matching the output based on the detected sounds inside the vehicle.

9. A system for actively suppressing noise in a vehicle, characterized in that, The system is configured to implement the method according to any one of the preceding claims and / or include: Device for detecting vehicle data (12); Device (13) for determining activation data; and Devices for activating active noise suppression (14), particularly devices for active noise suppression (15).

10. A computer program or computer program product, wherein, The computer program or computer program product includes instructions, particularly instructions stored on a computer-readable and / or non-volatile storage medium, which, when implemented by one or more computers or the system according to claim 9, cause the computer or the system to perform the method according to any one of claims 1 to 8.

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