A voice control method and system for tire inflation equipment

Abstract

The present invention relates to the field of voice recognition technology, and in particular to a voice control method and system for tire inflation equipment. The method first obtains the user's voice information and tire model, then inputs the voice information into a pre-trained dialect understanding model to understand the user's inflation command, then matches the tire model with a preset tire information parameter library to obtain inflation parameters, then monitors the current tire pressure of the target tire, and inflates the target tire based on the current tire pressure and the rated power of the tire inflation equipment. Finally, it determines whether the current tire pressure meets the following conditions: the current tire pressure reaches or exceeds the standard tire pressure; the current tire pressure is in a constant or decreasing state; the inflation command is an inflation stop command; if any of the conditions are met, the inflation is interrupted and a corresponding voice alarm is issued. Compared with the existing technology, the tire inflation operation using the method of the present invention is more convenient, safer, and provides a better user experience.

Description

Technical Field

[0001] The present invention relates to the field of voice recognition technology, and more particularly to a voice control method and system for tire inflation equipment. Background Art

[0002] With the development of the economy and the improvement of living standards, cars have become a necessity in life. During the use of cars, tires will leak naturally. In addition, due to factors such as wear and tear during daily driving, it is necessary to inflate the tires every once in a while.

[0003] However, in the prior art, most tire inflation devices use more traditional mechanical buttons or knobs for air pressure setting, start / stop control, and mode switching. For example, a Chinese patent document with authorization announcement number CN106567825B discloses a CNC air pump voice guidance operating system and method, which uses buttons to implement the above functions. When a user inflates a tire, he needs to first connect the inflation gun head of the tire inflation device to the tire inflation port, and then return to the tire inflation device to manually set the target air pressure value or perform other operations before inflating the tire. The user needs to continuously observe the air pressure gauge during the inflation process to determine whether the inflation is complete. This series of operating steps is not only cumbersome, but also prone to errors. Especially in low light or emergency situations, it may be difficult for the user to accurately set the target air pressure value or determine whether the tire has reached the target air pressure value, thereby affecting the inflation efficiency, accuracy and safety.

[0004] In summary, the above problems not only affect the user experience, but may also have an adverse impact on inflation efficiency and safety. Therefore, how to improve the usability and safety of the equipment is an important direction for the current development of tire inflation equipment. Summary of the Invention

[0005] In order to solve the technical problems of cumbersome operation, poor safety and user experience of existing tire inflation equipment, the present invention provides solutions in the following aspects.

[0006] In a first aspect, the present invention provides a voice control method for a tire inflation device, comprising:

[0007] Obtain the user's voice information and tire model;

[0008] Input the voice information into the pre-trained dialect understanding model to understand the user's inflation command; the inflation command includes the inflation stop command;

[0009] Matching the tire model with a preset tire information parameter library to obtain inflation parameters; the inflation parameters at least include standard tire pressure;

[0010] monitoring the current tire pressure of the target tire and inflating the target tire according to the current tire pressure and the rated power of the tire inflation device;

[0011] Determine whether the current tire pressure meets the following conditions:

[0012] The current tire pressure reaches or exceeds the standard tire pressure;

[0013] The current tire pressure is unchanged or decreasing;

[0014] The inflation command is an inflation stop command;

[0015] If any of the conditions are met, inflation will be interrupted and a corresponding voice alarm will be issued.

[0016] Beneficial effects: When acquiring voice information, the method of the present invention utilizes a dialect understanding model to understand the user's inflation intention, so that all types of users who use regional dialects on a daily basis can request tire inflation in their customary language, thereby improving the user experience. On this basis, the method of the present invention also designs a set of automatic tire-cutoff judgment mechanisms, specifically: if the current tire pressure reaches or exceeds the standard tire pressure, it means that the tire has reached the tire pressure threshold and there is a risk of explosion. Inflation is interrupted in time and a corresponding voice alarm is issued to improve the safety of tire inflation; if the current tire pressure is unchanged or reduced, it means that the tire's inflation interface is not connected or the tire is leaking, and inflation is meaningless. Inflation is interrupted in time and a corresponding voice alarm is issued to the user to prompt the user to check whether the inflation interface or tire is cracked; when the inflation instruction is an inflation stop instruction, inflation is interrupted in time to respond to user needs. Compared with the existing technology, the tire inflation operation using the method of the present invention is more convenient, safer and provides a better user experience.

[0017] Preferably, inflating the target tire according to the current tire pressure and the rated power of the tire inflation device includes:

[0018] adjusting an actual output power of the tire inflation device according to a current tire pressure of the target tire and a rated power of the tire inflation device;

[0019] Among them, if , ;

[0020] like , the expression of the actual output power is:

[0021]

[0022] Where, Indicates the actual output power, Indicates the preset slow charging coefficient, Indicates standard tire pressure. Indicates the current tire pressure of the target tire, Indicates the rated power of the tire inflation equipment. , Indicates the actual inflation time A decay function that varies and maps values ​​from 0-1.

[0023] Beneficial effect: For the modulation of the inflation power, the method of the present invention adopts a nonlinear inflation strategy of first large and then small. This method can reduce the inflation power when the tire is close to the standard tire pressure, and can effectively reduce the possibility of tire overfilling.

[0024] Preferably, the specific expression of the decay function is:

[0025]

[0026]

[0027] Where, Indicates standard tire pressure. Indicates the current tire pressure of the target tire, Indicates appearance time point, Indicates the time when the inflation stop command is initiated or the default stop time. represents the base of the logarithm of natural numbers, is the normalization function, Indicates the actual inflation time.

[0028] Beneficial effect: Regarding the adjustment of the decay function mapping value, the method of the present invention adjusts the decay function mapping value according to the time when the current tire pressure reaches the threshold value to meet the nonlinear pressure resistance performance of the tire itself, which can effectively reduce the possibility of tire overfilling.

[0029] Preferably, after the current tire pressure is in a constant or decreasing state, the method of the present invention further includes:

[0030] Calculate the tire pressure difference between the initial tire pressure and the current tire pressure;

[0031] If the tire pressure difference is 0, inflation is interrupted and a voice alarm indicating that the interface is not connected is issued.

[0032] Preferably, after matching the tire model with a preset tire information parameter library to obtain inflation parameters, the method further includes:

[0033] Correcting the standard tire pressure according to the current ambient temperature and load increment to obtain a corrected standard tire pressure;

[0034] The calculation expression of the corrected standard tire pressure is:

[0035]

[0036] Where, For the corrected standard tire pressure, is the standard tire pressure obtained from the tire information parameter library. is the current ambient temperature, is the reference temperature, is the load correction factor, is the load increment relative to the vehicle being unloaded.

[0037] Beneficial effect: The standard tire pressure of the method of the present invention can be corrected according to the current ambient temperature and load increment, so as to improve the reliability of the automatic tire cut-off judgment mechanism of the method of the present invention.

[0038] Preferably, the training method of the dialect understanding model is:

[0039] Collecting voice information of various dialects, preprocessing the voice information to obtain preprocessed data;

[0040] Input the preprocessed data into a preset dialect understanding model for training to obtain a training model;

[0041] Calculate the loss rate of the training model;

[0042] The training model with a loss rate lower than a preset threshold is used as the dialect understanding model ultimately used to understand the user's voice information.

[0043] Beneficial effect: By training the dialect understanding model multiple times until the loss rate is lower than the preset threshold, the reliability and accuracy of dialect understanding are improved.

[0044] Preferably, if the target tire is used for a long-distance truck or a heavy-duty mining truck, the inflation parameter also includes nitrogen content.

[0045] Preferably, if it is understood that the user's inflation instruction is a null value, an invalid input voice prompt is issued to the user.

[0046] Preferably, the user's tire model is obtained as follows:

[0047] Retrieve the user's historical inflation records or tire maintenance records;

[0048] Extract the user's tire model from historical inflation records or tire maintenance records.

[0049] In a second aspect, the method of the present invention discloses a voice control system for tire inflation equipment, including a processor and a memory, wherein the memory stores computer program instructions for the voice control method for tire inflation equipment, and when the computer program instructions are executed by the processor, the voice control method for tire inflation equipment recorded in the first aspect is implemented.

[0050] The beneficial effects of the present invention are:

[0051] (1) Compared with the existing technology, the tire inflation operation using the method of the present invention is more convenient, safer and provides a better user experience.

[0052] (2) Compared with the prior art, the method of the present invention adopts a nonlinear inflation strategy of increasing the pressure first and then decreasing the pressure. This method can reduce the inflation power when the tire is close to the standard tire pressure, and can effectively reduce the possibility of over-inflation of the tire.

[0053] (3) Compared with the prior art, the method of the present invention can be corrected according to the current ambient temperature and load increment to improve the reliability of the automatic gas cut-off judgment mechanism of the method of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a flow chart of a voice control method for a tire inflation device in a first embodiment of the present invention;

[0055] Figure 2 is a graph showing actual output power during inflation of a target tire in the first embodiment of the present invention;

[0056] Figure 3 is a current tire pressure curve diagram during the inflation process of the target tire in the first embodiment of the present invention;

[0057] Figure 4 This is a schematic diagram of the structure of the voice control system for tire inflation equipment in the second embodiment of the present invention;

[0058] Figure 5 This is a circuit diagram of a control module in Embodiment 3 of the present invention;

[0059] Figure 6 This is a circuit diagram of the voice acquisition module in the third embodiment of the present invention;

[0060] Figure 7 This is a circuit diagram of the voice output module in the third embodiment of the present invention;

[0061] Figure 8 This is a circuit diagram of the communication module in the third embodiment of the present invention. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0063] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0064] Example 1

[0065] like Figure 1 As shown, this embodiment discloses a voice control method for tire inflation equipment, including:

[0066] S10: Obtain the user's voice information and tire model.

[0067] In this embodiment, the user's voice information does not need to be standard Mandarin information, and can be Cantonese, Sichuan and Chongqing dialects, or other regional dialects. The tire model can be extracted from the user's historical inflation record or tire maintenance record, or can be manually input by the user.

[0068] S20: Input the voice information into the pre-trained dialect understanding model to understand the user's inflation instruction.

[0069] In this embodiment, the inflation instruction includes at least an inflation start instruction and an inflation stop instruction. The dialect understanding model can adopt Conformer or Wav2Vec 2.0.

[0070] S30: Match the tire model with a preset tire information parameter library to obtain inflation parameters. In this embodiment, the inflation parameters at least include standard tire pressure.

[0071] S40: monitoring the current tire pressure of the target tire and inflating the target tire according to the current tire pressure and the rated power of the tire inflation device.

[0072] In this embodiment, a three-way connector may be used to connect the tire pressure sensor, the inflation device, and the tire inflation port to achieve synchronous execution of the tire pressure monitoring and inflation processes.

[0073] S50: Determine whether the current tire pressure meets the following conditions:

[0074] Condition 1: The current tire pressure reaches or exceeds the standard tire pressure;

[0075] Condition 2: The current tire pressure is unchanged or decreasing;

[0076] Condition 3: The inflation command is an inflation stop command;

[0077] S60: If any of the conditions are met, the inflation is interrupted and a corresponding voice alarm is issued.

[0078] Through steps S10-S60 described above, the present method utilizes a dialect understanding model in step S20 to understand the user's inflation intention. This allows users, whether speaking Cantonese, Sichuan and Chongqing dialects, or other regional dialects, to request tire inflation in their preferred language, significantly improving the user experience. Furthermore, the present method also incorporates an automatic tire inflation interruption determination mechanism (step S50) that interrupts tire inflation based on various conditions, including overfilling, interface disconnection, tire leakage, and user-initiated stop. Compared to existing technologies, the present method improves user experience and offers greater safety and convenience.

[0079] Furthermore, before the above step S20, in order to improve the reliability and accuracy of dialect understanding, it is necessary to train the dialect understanding model to meet the application of the automobile tire inflation scenario. The training process of the dialect understanding model is specifically as follows:

[0080] S200: collecting voice information of various dialects, pre-processing the voice information, and obtaining pre-processed data.

[0081] Specifically, a large amount of voice information related to tire inflation is collected in multiple scenarios (such as indoor repair shops and outdoor parking lots), such as "Inflate the tire," "Stop inflating," and "Set the inflation pressure to 2.3 bar." The voice information is transcribed into text, and the text content corresponding to each voice segment is accurately labeled. The transcribed text is semantically annotated, marking key information related to tire inflation, such as operating instructions / control instructions, vehicle model, and tire information. To improve recognition accuracy, background noise in the voice information can be removed using wavelet transforms to reduce interference from background noise on speech recognition. By preprocessing the voice information, interference from irrelevant information and background noise can be avoided, thereby improving the quality of the voice information and, in turn, the accuracy of speech recognition.

[0082] S201: Input the preprocessed data into a preset dialect understanding model for training to obtain a training model.

[0083] S202: Calculate the loss rate of the training model.

[0084] S203: The training model with a loss rate lower than a preset threshold is used as the dialect understanding model ultimately used to understand the user's voice information.

[0085] In this embodiment, the calculation of the loss rate in step S202 is performed using the Huber loss algorithm, which has a certain robustness in processing abnormal speech information. The threshold value can be set according to actual conditions.

[0086] In this embodiment, Cantonese, Mandarin, and Sichuan and Chongqing dialects are mainly used as training samples for training. In other embodiments, the training samples can be expanded according to actual conditions to meet the dialect understanding scenarios of other different regions.

[0087] Furthermore, if the inflation instruction of the user is understood to be a null value in step S20, it means that the user's voice is not clear or the user's dialect has not been trained in the training sample. The user needs to re-enter the language type already in the training sample, and an invalid input voice prompt is issued to the user.

[0088] Furthermore, in the above step S30, if the historical inflation record or tire maintenance record is unknown and the user himself is not clear about the tire model, the tire information parameter library can be called according to the car model and the tire model can be obtained by using a table lookup method.

[0089] For example, some contents in the tire information parameter library are shown in Table 1.

[0090] Table 1

[0091]

[0092] It should be further explained that the aforementioned tire information parameter library may also include information such as maximum inflation pressure, which can be selected by those skilled in the art based on actual needs. As can be seen from the table above, tire pressure has different units, such as kPa, bar, or psi. Therefore, the method of the present invention may also include a process for converting tire pressures in different units to meet the usage habits of different users and the tire pressure marking requirements of different vehicles. For ease of description and accuracy, the embodiments of the present invention use bar as the unit of tire pressure.

[0093] Preferably, after the above step S30, the method of the present invention further comprises:

[0094] Correcting the standard tire pressure according to the current ambient temperature and load increment to obtain a corrected standard tire pressure;

[0095] The calculation expression of the corrected standard tire pressure is:

[0096]

[0097] Where, For the corrected standard tire pressure, is the standard tire pressure obtained from the tire information parameter library. is the current ambient temperature, is the reference temperature, is the load correction factor, is the load increment relative to the vehicle being unloaded.

[0098] It needs to be explained that The value can be retrieved from the corresponding standard database using a table lookup method. The correction function can be enabled or disabled based on user needs, with the user entering a load increment based on the vehicle's cargo load. Once the user confirms the start of the correction function, the standard tire pressure matched from the tire information parameter library is replaced with the corrected standard tire pressure, which then participates in the subsequent power calculation process.

[0099] It should be noted that the tire pressure of long-distance trucks or heavy-duty mining trucks is significantly affected by their load. To improve tire inflation safety, the above correction function is enabled by default when the tire model is known. When inflating the tires of long-distance trucks or heavy-duty mining trucks, the inflation parameters should include the nitrogen content. The nitrogen content for long-distance trucks and heavy-duty mining trucks is generally 95.5%-99.5%, and the specific nitrogen content value is selected based on actual conditions.

[0100] Furthermore, in the above step S40, inflating the target tire according to the current tire pressure and the rated power of the tire inflation device includes:

[0101] adjusting an actual output power of the tire inflation device according to a current tire pressure of the target tire and a rated power of the tire inflation device;

[0102] Among them, if , ;

[0103] like , the expression of the actual output power is:

[0104]

[0105] Where, Indicates the actual output power, Indicates the preset slow charging coefficient, Indicates standard tire pressure. Indicates the current tire pressure of the target tire, Indicates the rated power of the tire inflation equipment. , Indicates the actual inflation time A decay function that varies and maps values ​​from 0-1.

[0106] It should be noted that the target tire is inflated based on the user's inflation command (e.g., "Inflate this tire") to match the target tire's standard tire pressure. Before inflation begins, the user can be asked to confirm the target tire's standard tire pressure, for example, "The inflation parameters matched to your car model are: the standard tire pressure is 2.3 bar. Do you want to inflate to this standard tire pressure?" By confirming the current standard tire pressure with the user, it can avoid mismatching and situations such as the user having changed tires. This prevents over- or under-inflation caused by inflating to the wrong standard tire pressure, improving the safety and accuracy of inflation while also ensuring the accuracy of user instructions.

[0107] In this embodiment, It can be 0.75-0.9.

[0108] Through the above scheme design, combined with Figure 2 As shown, the method of the present invention adopts a nonlinear inflation strategy of first large and then small to inflate the tire. When the tire pressure is close to the standard tire pressure, the inflation power will approach 0. Figure 3 It can be seen that the method of the present invention can achieve slow inflation when approaching the upper limit of tire pressure. This method can effectively reduce the possibility of tire overinflation, thereby avoiding the possibility of tire blowout or overpressure.

[0109] More specifically, the specific expression of the decay function is:

[0110]

[0111]

[0112] Where, Indicates standard tire pressure. Indicates the current tire pressure of the target tire, Indicates appearance time point, Indicates the time when the inflation stop command is initiated or the default stop time. represents the base of the logarithm of natural numbers, is the normalization function, Indicates the actual inflation time.

[0113] It's important to note that tires possess a certain degree of elasticity, resulting in a nonlinear pressure curve. The higher the internal pressure, the lower the threshold for continued inflation. Traditionally, tires are inflated using a fixed inflation power. Compared to existing technologies, the decay function mapping values ​​of the present invention are designed to conform to the nonlinear pressure resistance of the tire, further reducing the likelihood of overinflation.

[0114] In this embodiment, if the user only issues an inflation start command without initiating an inflation stop command, and the current tire pressure is 0, the default time period from inflation start to inflation stop is 3 minutes. If the user requests an inflation time, the time at which the inflation stop command is issued is the sum of the inflation start command time and the requested inflation time. The normalization function uses a min-max normalization function, with the minimum value being the time at which the inflation start command is issued and the maximum value being the time at which the inflation stop command is issued. The normalization scale range can be 0-100.

[0115] Furthermore, in step S50, if condition 2 is met, the method of the present invention further includes:

[0116] Calculate the tire pressure difference between the initial tire pressure and the current tire pressure;

[0117] If the tire pressure difference is 0, inflation is interrupted and a voice alarm indicating that the interface is not connected is issued.

[0118] Through the above technical solution, the method of the present invention can automatically issue a non-connection voice alarm when the air pump inflation interface is not connected to the tire inflation port or the tire inflation interface is not firmly connected, so as to assist the user in checking the inflation interface status.

[0119] Example 2

[0120] like Figure 4 As shown, this embodiment discloses a tire inflation equipment voice control system, including a processor and a memory, wherein the memory stores computer program instructions for a tire inflation equipment voice control method, and when the computer program instructions are executed by the processor, the tire inflation equipment voice control method described in Example 1 is implemented.

[0121] Example 3

[0122] like Figure 5-Figure 8 As shown, this embodiment discloses a voice control device for tire inflation equipment, which is used to implement the voice control method for tire inflation equipment described in Example 1. The device includes a voice acquisition module, a voice output module, and a control module.

[0123] Among them, Figure 6 As shown, the voice collection module is used to collect the user's voice. Figure 7 As shown in , the voice output module is used for voice broadcasting. Figure 5 As shown, the control module is used to receive data from the voice acquisition module, control the inflation of the target tire, and send instructions to the voice output module.

[0124] Furthermore, the voice collection module and the voice output module are both connected to the control module to implement the tire inflation equipment voice control method described in the first embodiment.

[0125] In addition, if Figure 8 As shown, the device of this embodiment also includes a communication module, which is used to achieve communication connections between the tire pressure sensor, the voice acquisition module, the voice output module and the control module, and is also used for information retrieval or calling.

[0126] While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only.

Claims

1. A voice control method for tire inflation equipment, characterized in that: include: Obtain the user's voice information and tire model; Inputting the voice information into a pre-trained dialect understanding model to understand and obtain the user's inflation instruction; the inflation instruction includes an inflation stop instruction; Matching the tire model with a preset tire information parameter library to obtain inflation parameters; the inflation parameters at least include a standard tire pressure; Correcting the standard tire pressure according to the current ambient temperature and the load increment to obtain a corrected standard tire pressure; The calculation expression of the corrected standard tire pressure is: Where, For the corrected standard tire pressure, is the standard tire pressure obtained from the tire information parameter library. is the current ambient temperature, is the reference temperature, is the load correction factor, is the load increment relative to the vehicle's empty load; monitoring the current tire pressure of a target tire and, based on the current tire pressure of the target tire and the rated power of the tire inflation device, adjusting the actual output power of the tire inflation device to inflate the target tire; inflating the tire using a nonlinear inflation strategy that increases first and then decreases, such that the actual output power of the tire inflation device gradually decreases as the current tire pressure increases and approaches zero when the current tire pressure approaches a standard tire pressure; Among them, if , ; like , the expression of the actual output power is: Where, Indicates the actual output power, Indicates the preset slow charging coefficient, Indicates standard tire pressure. Indicates the current tire pressure of the target tire, Indicates the rated power of the tire inflation equipment. , Indicates the actual inflation time A decay function that changes and maps values ​​between 0 and 1; The specific expression of the decay function is: Where, Indicates standard tire pressure. Indicates the current tire pressure of the target tire, Indicates appearance time point, Indicates the time when the inflation stop command is initiated or the default stop time. represents the base of the logarithm of natural numbers, is the normalization function, Indicates the actual inflation time; Determine whether the current tire pressure meets the following conditions: The current tire pressure reaches or exceeds the standard tire pressure; The current tire pressure is in a constant or decreasing state; The inflation instruction is the inflation stop instruction; If any of the conditions are met, inflation will be interrupted and a corresponding voice alarm will be issued.

2. The tire inflation equipment voice control method according to claim 1, characterized in that: After the current tire pressure is in a constant or decreasing state, the method further includes: Calculating a tire pressure difference between an initial tire pressure and the current tire pressure; If the tire pressure difference is 0, inflation is interrupted and a voice alarm indicating that the interface is not connected is issued.

3. The tire inflation equipment voice control method according to claim 1, characterized in that: The training method of the dialect understanding model is: Collecting voice information of various local dialects, and preprocessing the voice information to obtain preprocessed data; Input the preprocessed data into a preset dialect understanding model for training to obtain a training model; Calculating the loss rate of the training model; The training model with the loss rate lower than the preset threshold is used as the dialect understanding model ultimately used to understand the user's voice information.

4. The tire inflation equipment voice control method according to claim 1, characterized in that: If the target tire is used for a long-distance truck or a heavy-duty mining truck, the inflation parameter further includes nitrogen content.

5. The tire inflation equipment voice control method according to claim 1, characterized in that: If it is understood that the user's inflation instruction is a null value, an invalid input voice prompt is issued to the user.

6. The tire inflation equipment voice control method according to claim 1, characterized in that: Get the user's tire model, specifically: Retrieve the user's historical inflation records or tire maintenance records; The user's tire model is extracted from the historical inflation record or the tire maintenance record.

7. A voice control system for tire inflation equipment, characterized in that: The invention comprises a processor and a memory, wherein the memory stores computer program instructions for the voice control method of the tire inflation device, and when the computer program instructions are executed by the processor, the voice control method of the tire inflation device according to any one of claims 1 to 6 is implemented.

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