Automobile key car seeking horn volume adjusting method, device, system and vehicle

Abstract

This invention discloses a method, device, system, and vehicle for adjusting the horn volume when using a car key for vehicle locating. The method includes: receiving a vehicle locating command transmitted from the car key and measuring the radio frequency signal of the command to obtain a target signal strength range; querying a pre-set first mapping table to obtain a corresponding target distance range based on the target signal strength range; querying a pre-set second mapping table to obtain a corresponding target volume value based on the target distance range; querying a pre-set third mapping table to obtain a corresponding target PWM signal based on the target volume value; and adjusting the vehicle horn according to the target PWM signal to achieve the target horn volume. This invention avoids poor user experience due to inappropriate horn volume and improves overall vehicle safety. This invention is primarily applicable to the field of vehicle technology.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, specifically to a method, device, system, and vehicle for adjusting the volume of a car key horn when searching for a vehicle. Background Technology

[0002] In related technologies, vehicle locating via remote key allows users to press a button on the key, which then sends a command to the vehicle via radio frequency. Upon receiving the signal, the vehicle activates its horn at a fixed volume, accompanied by flashing lights, to help users quickly locate their vehicle in complex environments such as parking lots. Currently, however, these technologies often suffer from significant noise pollution in horn volume control, impacting user experience and public safety, particularly in quiet environments such as underground parking lots or residential areas. Therefore, how to avoid noise pollution when locating a vehicle via remote key to improve user experience is a pressing technical issue that requires research within the industry. Summary of the Invention

[0003] This invention provides a method, device, system, and vehicle for adjusting the horn volume when using a car key to locate the vehicle, in order to solve the problem of noise pollution to the environment and negative impact on user experience caused by using a remote key to locate the vehicle in the prior art, and at least provides a beneficial alternative or creates conditions.

[0004] The present invention provides a method for adjusting the volume of a car key car horn, comprising: receiving a car locator command transmitted from a car key, and measuring the radio frequency signal of the car locator command to obtain a target signal strength range; The corresponding distance range is obtained by querying a pre-set first mapping table based on the target signal strength range, and the distance range is recorded as the target distance range; the corresponding volume value is obtained by querying a pre-set second mapping table based on the target distance range, and the volume value is recorded as the target volume value; The corresponding PWM signal is obtained by querying a pre-set third mapping table according to the target volume value, and the PWM signal is recorded as the target PWM signal; the vehicle horn is adjusted according to the target PWM signal so that the loudness of the vehicle horn reaches the target volume; wherein, the target volume value is directly proportional to the target distance range.

[0005] Furthermore, the radio frequency signal of the vehicle search command is measured to obtain the target signal strength range. Specifically, after the vehicle's body control module determines the vehicle search command, it samples the radio frequency signal multiple times for RSSI value, takes the average value of the sampling results to obtain the final RSSI value, and records the RSSI value as the target signal strength range.

[0006] Furthermore, the first mapping table is obtained through experimental calibration based on the physical characteristic that the intensity of radio frequency signals in free space is inversely proportional to the propagation distance, and is pre-stored in the vehicle.

[0007] Furthermore, the second mapping table is based on the criterion that distance and volume are directly proportional, obtained through experimental calibration, and pre-stored in the vehicle.

[0008] Furthermore, the third mapping table is based on the vehicle horn control method, obtained through experimental calibration, and pre-stored in the vehicle.

[0009] On the other hand, a car key locator horn volume adjustment device is provided, comprising: a processor and a memory, wherein the memory is used to store a computer-readable program; when the computer-readable program is executed by the processor, the processor causes the processor to implement the car key locator horn volume adjustment method as described in any of the above technical solutions.

[0010] On the other hand, a car key locator horn volume adjustment system is provided, including: a receiving module, a first query module, a second query module, a third query module, and an adjustment module; The module is used to: receive a car-finding command transmitted from the car key, and measure the radio frequency signal of the car-finding command to obtain the target signal strength range; The first query module is used to: query the corresponding distance range from a pre-set first mapping relationship table according to the target signal strength range, and record the distance range as the target distance range; The second query module is used to: query the corresponding volume value from a pre-set second mapping relationship table according to the target distance range, and record the volume value as the target volume value; The third query module is used to: query the corresponding PWM signal from a pre-set third mapping table according to the target volume value, and record the PWM signal as the target PWM signal; The adjustment module is used to: adjust the vehicle horn according to the target PWM signal so that the loudness of the vehicle horn reaches the target volume; The target volume value is directly proportional to the target distance range.

[0011] Furthermore, in the obtained module, the radio frequency signal of the vehicle search command is measured to obtain the target signal strength range. Specifically, after the vehicle body control module determines the vehicle search command, it samples the radio frequency signal multiple times for RSSI value, takes the average value of the sampling results to obtain the final RSSI value, and records the RSSI value as the target signal strength range.

[0012] Furthermore, the first mapping table is obtained through experimental calibration based on the physical characteristic that the intensity of radio frequency signals in free space is inversely proportional to the propagation distance, and is pre-stored in the vehicle.

[0013] On the other hand, a vehicle is provided, characterized in that it integrates the car key car horn volume adjustment system described in any one of the above technical solutions.

[0014] This invention has at least the following beneficial effects: The method of this invention estimates the relative distance between the user and the vehicle by measuring the radio frequency signal strength of the vehicle's remote key, using a first mapping table, and then determines the appropriate horn volume using a second and third mapping table, thereby achieving an intelligent effect of "lower sound at close range, louder sound at greater distance." This avoids a poor user experience due to inappropriate horn volume. Furthermore, this invention also provides corresponding devices, systems, and vehicles, the beneficial effects of which are similar to the method and will not be repeated here. This invention is primarily applicable to the field of vehicle technology. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0016] Figure 1 This is a flowchart showing the steps for adjusting the horn volume when using a car key to locate it. Figure 2 This is a schematic diagram of the car key car horn volume adjustment device; Figure 3 This is the hardware structure of a car key car horn volume adjustment device according to another embodiment; Figure 4 This is a schematic diagram of the system connection structure of a car key car finder horn volume control system. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] It should be noted that although functional modules are divided in the system diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0019] Before providing a detailed description of the embodiments of this application, some of the nouns and terms involved in the embodiments of this application will be explained first. The nouns and terms involved in the embodiments of this application are subject to the following interpretations.

[0020] A remote key, also known as a vehicle remote key, is a portable electronic device that uses radio waves to send commands to a vehicle.

[0021] In the field of vehicle-related technologies, solving the problem of noise pollution and negative impact on user experience caused by using remote key to locate the vehicle is a topic that urgently needs to be studied in the industry.

[0022] Please refer to Figure 1 , Figure 1 This is a flowchart showing the steps for adjusting the horn volume when using a car key to locate it.

[0023] Therefore, this application discloses a method for adjusting the volume of a car key horn when searching for a vehicle. This method can be executed by a software program, and when the software program is executed, the steps it implements include: Step 1: Receive the car-finding command transmitted from the car key and measure the radio frequency signal of the car-finding command to obtain the target signal strength range.

[0024] When a user needs to locate their car, they can press the car-finding button on their car key. The car key is equipped with a microcontroller unit and a radio frequency (RF) transmitter circuit. Once the microcontroller unit detects that the user has pressed the car-finding button, it controls the RF transmitter circuit to emit an RF signal containing a car-finding command.

[0025] The vehicle receives the radio frequency signal through its radio frequency receiving module and measures the radio frequency signal to obtain the strength value of the radio frequency signal, and records the strength value as the target signal strength range.

[0026] Of course, in order to measure the radio frequency signal more accurately, in some further specific embodiments, the radio frequency signal of the vehicle search command is measured to obtain the target signal strength range. Specifically, after the vehicle body control module determines the vehicle search command, it samples the radio frequency signal multiple times, takes the average value of the sampling results to obtain the final RSSI value, and records the RSSI value as the target signal strength range.

[0027] Specifically, to ensure the stability of the RSSI value, the Body Control Module (BCM) collects the RSSI value through multiple consecutive samplings after receiving the vehicle search command. In this specific embodiment, RSSI sampling is performed five times consecutively, with each sampling 1ms apart. The average value is then taken as the valid RSSI value for this calculation. This effectively eliminates the impact of instantaneous signal fluctuations.

[0028] This further specific embodiment creatively utilizes the RSSI parameter, which already exists in existing systems but is not fully utilized, as a proxy variable characterizing the distance between the user and the vehicle, and uses it as a direct or indirect basis for controlling the horn volume. This avoids the need to add a dedicated ranging sensor, thereby reducing resource consumption.

[0029] Step 2: Based on the target signal strength range, query the corresponding distance range from the pre-set first mapping relationship table, and record the distance range as the target distance range.

[0030] After obtaining the target signal strength range, the target distance range corresponding to the target signal strength range can be obtained by looking up the first mapping table. The first mapping table is based on the physical characteristic that the radio frequency signal strength in free space is inversely proportional to the propagation distance. It was obtained through experimental calibration and pre-stored in the vehicle.

[0031] The first mapping table mainly reflects the relationship between signal strength and propagation distance. Its calibration method includes: in an open area free from interference, placing the car key at a distance of 1 meter, 5 meters, 10 meters, 30 meters, and 50 meters from the vehicle, pressing the car find button at each distance, and recording the RSSI value received by the Body Control Module (BCM). Measure multiple times at each distance point and average the results to obtain a set of baseline data.

[0032] In this specific embodiment, the first mapping relationship table is shown in Table 1:

[0033] Table 1.

[0034] Step 3: Query the corresponding volume value from the pre-set second mapping table according to the target distance range, and record the volume value as the target volume value.

[0035] Once the target distance range is obtained, the target volume value corresponding to that range can be retrieved from the second mapping table using a lookup table. This second mapping table is based on the principle that distance and volume are directly proportional, was obtained through experimental calibration, and is pre-stored in the vehicle.

[0036] In this specific embodiment, the second mapping relationship table is shown in Table 2:

[0037] Table 2.

[0038] Based on the relative distance estimated in step S303, the main control unit queries another pre-stored distance-volume mapping relationship (second mapping relationship table). This mapping relationship table is designed such that: the closer the distance, the smaller the target volume value; the farther the distance, the larger the target volume value.

[0039] This step achieves the effect of "eliminating startle": when it is determined that the user is near the vehicle (with strong signal strength), this step outputs a very low target volume value (e.g., 50 decibels), thus directly preventing the generation of high volume at the command level. This step also achieves the effect of "ensuring effectiveness at long distances": when it is determined that the user is far away (with weak signal strength), this step outputs a higher target volume value (e.g., 105 decibels), ensuring that the sound can reach the user's ears.

[0040] Step 4: Based on the target volume value, retrieve the corresponding PWM signal from the pre-set third mapping table, and record the PWM signal as the target PWM signal.

[0041] After obtaining the target volume value, in order for the vehicle horn to sound at that volume, PWM control of the vehicle horn is also required. Specifically, this can be achieved by looking up the PWM signal corresponding to the target volume value using a lookup table. Then, based on this PWM signal, the vehicle's horn drive circuit is controlled. The horn drive circuit converts this PWM signal into an average voltage to drive the horn, thereby controlling the volume. The third mapping table is based on the vehicle horn control method, obtained through experimental calibration, and pre-stored in the vehicle.

[0042] In this specific embodiment, the third mapping relationship table is shown in Table 3:

[0043] Table 3.

[0044] After obtaining the target PWM signal through the third mapping table, the determined target volume value can be converted into a pulse width modulation signal with a specific duty cycle. The duty cycle of the signal is proportional to the target volume (the larger the duty cycle, the higher the average voltage, the greater the power output of the horn driver circuit, and the louder the volume). This signal is sent to the vehicle's horn driver circuit.

[0045] Step 5: Adjust the vehicle horn according to the target PWM signal so that the loudness of the vehicle horn reaches the target volume.

[0046] The vehicle's horn drive circuit, based on the received target PWM signal, drives the horn to sound at the calculated target volume, ensuring the horn's loudness reaches the target volume. Of course, in some further embodiments, the vehicle's lighting system can also flash synchronously to perform a vehicle-finding function.

[0047] In some practical applications, the first, second, and third mapping tables can be combined into a single mapping table and stored in the same storage unit.

[0048] This invention measures the radio frequency signal strength of the vehicle's remote key to estimate the relative distance between the user and the vehicle using a first mapping table. Then, using a second and third mapping table, it determines the appropriate horn volume, achieving a smart effect of "lower sound at close range, louder sound at greater distance." This avoids a poor user experience caused by inappropriate horn volume.

[0049] refer to Figure 2 , Figure 2 This is a schematic diagram of the car key car horn volume adjustment device.

[0050] On the other hand, a car key locator horn volume adjustment device is provided, comprising: a processor and a memory, the memory being used to store a computer-readable program. When the computer-readable program is executed by the processor, the processor causes the processor to implement the car key locator horn volume adjustment method as described in any of the above specific embodiments.

[0051] Those skilled in the art will understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. As is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0052] Please see Figure 3 , Figure 3 This is another embodiment of the hardware structure of a car key locator horn volume adjustment device. The car key locator horn volume adjustment device includes: a processor 901, a memory 902, an input / output interface 903, a communication interface 904, and a bus 905.

[0053] The processor 901 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the car key car finding horn volume adjustment method provided in the embodiments of this application.

[0054] The memory 902 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 902 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 902 and is called and executed by the processor 901 using the methods described in the embodiments of this application.

[0055] The input / output interface 903 is used to implement information input and output.

[0056] The communication interface 904 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0057] Bus 905 transmits information between various components of the device, such as processor 901, memory 902, input / output interface 903, and communication interface 904.

[0058] The processor 901, memory 902, input / output interface 903, and communication interface 904 are connected to each other within the device via bus 905.

[0059] On the other hand, reference Figure 4 , Figure 4 This is a schematic diagram of the system connection structure of a car key car finder horn volume control system.

[0060] A car key locator horn volume adjustment system is provided, comprising: a receiving module, a first query module, a second query module, a third query module, and an adjustment module.

[0061] The module is used to: receive a car-finding command transmitted from the car key, and measure the radio frequency signal of the car-finding command to obtain the target signal strength range.

[0062] When a user needs to locate their car, they can press the car-finding button on their car key. The car key is equipped with a microcontroller unit and a radio frequency (RF) transmitter circuit. Once the microcontroller unit detects that the user has pressed the car-finding button, it controls the RF transmitter circuit to emit an RF signal containing a car-finding command.

[0063] The module receives the radio frequency signal and measures it to obtain the intensity value of the radio frequency signal, which is then recorded as the target signal intensity range.

[0064] Of course, in order to measure the radio frequency signal more accurately, in some further specific embodiments, measuring the radio frequency signal of the vehicle search command to obtain the target signal strength range specifically includes: after the vehicle search command is determined, the module samples the radio frequency signal multiple times, takes the average value of the sampling results to obtain the final RSSI value, and records the RSSI value as the target signal strength range.

[0065] Specifically, to ensure the stability of the RSSI value, the Body Control Module (BCM) collects the RSSI value through multiple consecutive samplings after receiving the vehicle search command. In this specific embodiment, RSSI sampling is performed five times consecutively, with each sampling 1ms apart. The average value is then taken as the valid RSSI value for this calculation. This effectively eliminates the impact of instantaneous signal fluctuations.

[0066] This further specific embodiment creatively utilizes the RSSI parameter, which already exists in existing systems but is not fully utilized, as a proxy variable characterizing the distance between the user and the vehicle, and uses it as a direct or indirect basis for controlling the horn volume. This avoids the need to add a dedicated ranging sensor, thereby reducing resource consumption.

[0067] The first query module is used to: query the corresponding distance range from a pre-set first mapping relationship table according to the target signal strength range, and record the distance range as the target distance range.

[0068] After obtaining the target signal strength range, the first query module can look up the target distance range corresponding to the target signal strength range in the first mapping table. The first mapping table is obtained through experimental calibration based on the physical characteristic that radio frequency signal strength in free space is inversely proportional to propagation distance, and is pre-stored in the vehicle.

[0069] The first mapping table mainly reflects the relationship between signal strength and propagation distance. Its calibration method includes: in an open area free from interference, placing the car key at a distance of 1 meter, 5 meters, 10 meters, 30 meters, and 50 meters from the vehicle, pressing the car find button at each distance, and recording the RSSI value received by the Body Control Module (BCM). Measure multiple times at each distance point and average the results to obtain a set of baseline data.

[0070] In this specific embodiment, the first mapping relationship table is shown in Table 1:

[0071] Table 1.

[0072] The second query module is used to: query the corresponding volume value from a pre-set second mapping table according to the target distance range, and record the volume value as the target volume value.

[0073] After obtaining the target distance range, the second query module can retrieve the target volume value corresponding to the target distance range from the second mapping table. This second mapping table is based on the principle that distance and volume are directly proportional, was obtained through experimental calibration, and is pre-stored in the vehicle.

[0074] In this specific embodiment, the second mapping relationship table is shown in Table 2:

[0075] Table 2.

[0076] The second query module, based on the estimated relative distance, queries another pre-stored distance-volume mapping relationship (the second mapping relationship table). This mapping relationship table is designed so that the closer the distance, the smaller the target volume value; and the farther the distance, the larger the target volume value.

[0077] It can achieve the effect of "eliminating fright": when it determines that the user is right next to the vehicle (with strong signal strength), this step will output a very low target volume value (e.g., 50 decibels), thus directly preventing the generation of high volume at the command level. It can also achieve the effect of "ensuring effectiveness at long distances": when it determines that the user is far away (with weak signal strength), this step will output a higher target volume value (e.g., 105 decibels) to ensure that the sound can reach the user's ears.

[0078] The third query module is used to: query the corresponding PWM signal from a pre-set third mapping table according to the target volume value, and record the PWM signal as the target PWM signal.

[0079] After obtaining the target volume value, PWM control of the vehicle horn is required to enable it to sound. The third lookup module can retrieve the PWM signal corresponding to the target volume value using a lookup table. Based on this PWM signal, the module controls the vehicle's horn drive circuit, converting the PWM signal into an average voltage to drive the horn, thereby controlling the volume. The third mapping table is obtained through experimental calibration based on the vehicle horn control method and is pre-stored in the vehicle.

[0080] In this specific embodiment, the third mapping relationship table is shown in Table 3:

[0081] Table 3.

[0082] After obtaining the target PWM signal through the third mapping table, the determined target volume value can be converted into a pulse width modulation signal with a specific duty cycle. The duty cycle of the signal is proportional to the target volume (the larger the duty cycle, the higher the average voltage, the greater the power output of the horn driver circuit, and the louder the volume). This signal is sent to the vehicle's horn driver circuit.

[0083] The adjustment module is used to adjust the vehicle horn according to the target PWM signal so that the loudness of the vehicle horn reaches the target volume.

[0084] The adjustment module controls the horn drive circuit to drive the horn to sound at the calculated target volume based on the received target PWM signal, thus ensuring the vehicle horn reaches the target volume. In some further embodiments, the vehicle's lighting system can also flash synchronously to perform a vehicle location function.

[0085] On the other hand, a vehicle is provided that integrates the car key car finding horn volume adjustment system described in the above specific embodiments.

[0086] On the other hand, a computer-readable storage medium is provided, wherein a processor-executable program is stored, which, when executed by a processor, is used to implement the car key horn volume adjustment method as described in any of the above specific embodiments.

[0087] This application also discloses a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. The processor of the computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the car key horn volume adjustment method as described in any of the preceding embodiments.

[0088] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatuses.

[0089] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0090] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, apparatuses, or units, and may be electrical, mechanical, or other forms.

[0091] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0092] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0093] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0094] Although the description of this application has been quite detailed and particularly focused on several of the described embodiments, it is not intended to limit itself to any of these details or embodiments or any particular embodiment. Rather, it should be considered as effectively covering the intended scope of this application by referring to the appended claims and taking into account the prior art, which provides for a broad possible interpretation of these claims. Furthermore, the foregoing description of this application with respect to embodiments foreseeable by the inventors is intended to provide a useful description, and non-substantial modifications to this application that have not yet been foreseen may still represent equivalent modifications.

[0095] It should be noted that in all specific embodiments of this application, when processing data related to user identity or characteristics, such as user information, user behavior data, user historical data, and user location information, user permission or consent is obtained first. Furthermore, the collection, use, and processing of this data comply with relevant laws, regulations, and standards. In addition, when embodiments of this application require access to sensitive personal information of users, separate permission or consent from the user is obtained through pop-ups or redirection to confirmation pages. Only after obtaining the user's separate permission or consent is the necessary user-related data required for the proper functioning of these embodiments acquired.

Claims

1. A method for adjusting the horn volume when searching for a car key, characterized in that, include: The system receives a car-finding command transmitted from the car key and measures the radio frequency signal of the car-finding command to obtain the target signal strength range. The corresponding distance range is obtained by querying a pre-set first mapping table based on the target signal strength range, and the distance range is recorded as the target distance range; the corresponding volume value is obtained by querying a pre-set second mapping table based on the target distance range, and the volume value is recorded as the target volume value; The corresponding PWM signal is obtained by querying a pre-set third mapping table according to the target volume value, and the PWM signal is recorded as the target PWM signal; the vehicle horn is adjusted according to the target PWM signal so that the loudness of the vehicle horn reaches the target volume; wherein, the target volume value is directly proportional to the target distance range.

2. The method for adjusting the volume of a car key horn when searching for a vehicle according to claim 1, characterized in that, Measuring the radio frequency signal of the vehicle search command to obtain the target signal strength range specifically includes: after the vehicle body control module determines the vehicle search command, it samples the radio frequency signal multiple times for RSSI value, takes the average value of the sampling results to obtain the final RSSI value, and records the RSSI value as the target signal strength range.

3. The method for adjusting the horn volume when finding a car key according to claim 1, characterized in that, The first mapping table is obtained through experimental calibration based on the physical characteristic that the intensity of radio frequency signals in free space is inversely proportional to the propagation distance, and is pre-stored in the vehicle.

4. The method for adjusting the horn volume when finding a car key according to claim 1, characterized in that, The second mapping table is based on the principle that distance and volume are directly proportional. It was obtained through experimental calibration and pre-stored in the vehicle.

5. The method for adjusting the horn volume when searching for a car key according to claim 1, characterized in that, The third mapping table is based on the vehicle horn control method, obtained through experimental calibration, and pre-stored in the vehicle.

6. A car key horn volume adjustment device, characterized in that, include: processor; Memory, used to store computer-readable programs; When the computer-readable program is executed by the processor, the processor enables the car key horn volume adjustment method as described in any one of claims 1-5.

7. A car key locator horn volume control system, characterized in that, include: The module includes a query module, a first query module, a second query module, a third query module, and an adjustment module. The module is used to: receive a car-finding command transmitted from the car key, and measure the radio frequency signal of the car-finding command to obtain the target signal strength range; The first query module is used to: query the corresponding distance range from a pre-set first mapping relationship table according to the target signal strength range, and record the distance range as the target distance range; The second query module is used to: query the corresponding volume value from a pre-set second mapping relationship table according to the target distance range, and record the volume value as the target volume value; The third query module is used to: query the corresponding PWM signal from a pre-set third mapping table according to the target volume value, and record the PWM signal as the target PWM signal; The adjustment module is used to: adjust the vehicle horn according to the target PWM signal so that the loudness of the vehicle horn reaches the target volume; The target volume value is directly proportional to the target distance range.

8. A car key horn volume adjustment system according to claim 7, characterized in that, In the obtained module, the radio frequency signal of the vehicle search command is measured to obtain the target signal strength range. Specifically, after the vehicle body control module determines the vehicle search command, it samples the radio frequency signal multiple times for RSSI value, takes the average value of the sampling results to obtain the final RSSI value, and records the RSSI value as the target signal strength range.

9. A car key horn volume adjustment system according to claim 7, characterized in that, The first mapping table is obtained through experimental calibration based on the physical characteristic that the intensity of radio frequency signals in free space is inversely proportional to the propagation distance, and is pre-stored in the vehicle.

10. A vehicle, characterized in that, The system integrates the car key car horn volume adjustment system as described in any one of claims 7 to 9.

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