Tire pressure monitoring method, device and equipment, vehicle and readable storage medium

Abstract

The invention relates to the field of vehicles, in particular to a tire pressure monitoring method, device and equipment, a vehicle and a readable storage medium. The method comprises the steps of obtaining first monitoring data recorded before a vehicle is started, wherein the first monitoring data comprises monitoring data of each tire of the vehicle; judging whether each tire is in a low-pressure state or not based on the first monitoring data; if any tire is in the low-pressure state, a low-pressure alarm instruction is generated, and the low-pressure alarm instruction is used for indicating the vehicle to output a low-pressure alarm signal. According to the invention, the timeliness of vehicle low-voltage alarm is improved.

Description

Technical Field

[0001] This application relates to the field of vehicles, specifically to a tire pressure monitoring method, device, equipment, vehicle, and readable storage medium. Background Technology

[0002] With the increasing prevalence of vehicles, improving driving safety has become a core topic in the automotive industry. As a crucial component of a car, tire pressure that is too low or too high directly impacts driving safety.

[0003] Currently, the tire pressure monitoring system typically collects tire pressure information after the driver starts the car, and then determines whether to issue a low pressure warning based on the collected information. However, since the tire pressure monitoring system takes a certain amount of time to collect tire pressure information, by the time it determines that a low pressure warning is needed and issues it, the driver may have already driven the vehicle for a distance, which inevitably reduces the safety of driving the vehicle. Summary of the Invention

[0004] In view of the above, it is necessary to propose a tire pressure monitoring method, device, equipment, vehicle, and readable storage medium to solve the technical problem that the lack of timely low pressure alarm in the vehicle leads to reduced driving safety in the prior art.

[0005] In a first aspect, this embodiment provides a tire pressure monitoring method, comprising: acquiring first monitoring data recorded before the vehicle is started, the first monitoring data including monitoring data of each tire of the vehicle; determining, based on the first monitoring data, whether each tire is in a low-pressure state; if any tire is in the low-pressure state, generating a low-pressure alarm command, the low-pressure alarm command being used to instruct the vehicle to output a low-pressure alarm signal.

[0006] Optionally, the tire pressure monitoring method described above may further include: if none of the tires are in the low-pressure state, continuously acquiring second monitoring data after the vehicle is started; determining whether each tire is in a low-pressure state based on the second monitoring data; and generating a low-pressure alarm command if any tire is in the low-pressure state.

[0007] Optionally, the above-described tire pressure monitoring method, before acquiring the first monitoring data recorded before vehicle startup, further includes: continuously acquiring the first monitoring data before vehicle startup; if the number of recorded first monitoring data reaches a preset first quantity, each time the latest first monitoring data is acquired, deleting the earliest recorded first monitoring data according to the first-in-first-out principle, and recording the latest first monitoring data.

[0008] Optionally, the tire pressure monitoring method described above may determine whether each tire is in a low-pressure state based on the first monitoring data, including: determining whether each tire is in a low-pressure state based on each set of first monitoring data; if it is determined that a tire is in a low-pressure state based on each set of first monitoring data, generating the low-pressure alarm command.

[0009] Optionally, after acquiring the first monitoring data recorded before vehicle startup, the above tire pressure monitoring method further includes: determining whether the number of sets of the first monitoring data is greater than or equal to a preset second number; if the number of sets of the first monitoring data is greater than or equal to the second number, determining whether each tire is in a low-pressure state based on the first monitoring data; if the number of sets of the first monitoring data is less than the second number, continuously acquiring the second monitoring data after vehicle startup. When the total number of sets of the first monitoring data and the second monitoring data is equal to the second quantity, based on the first monitoring data and the second monitoring data, it is determined whether each tire is in the low pressure state, so that when any tire is in the low pressure state, the low pressure alarm command is generated.

[0010] Optionally, in the above-described tire pressure monitoring method, the first monitoring data includes tire temperature data and tire pressure data for each tire; the step of determining whether each tire is in a low-pressure state based on the first monitoring data includes: determining a tire pressure threshold for each tire based on the tire temperature data of each tire; and determining whether each tire is in the low-pressure state based on the tire pressure data of each tire and the tire pressure threshold for each tire.

[0011] Secondly, this embodiment provides a tire pressure monitoring device, including: a data acquisition module, used to acquire first monitoring data recorded by the vehicle before starting, the first monitoring data including monitoring data of each tire of the vehicle; a tire pressure judgment module, used to determine whether each tire is in a low-pressure state based on the first monitoring data; and a low-pressure alarm module, used to generate a low-pressure alarm command if any tire is in the low-pressure state, the low-pressure alarm command being used to instruct the vehicle to output a low-pressure alarm signal.

[0012] Thirdly, this embodiment provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the tire pressure monitoring method as described in any of the above.

[0013] Fourthly, this embodiment provides a vehicle that includes the electronic equipment described above.

[0014] Fifthly, this embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the tire pressure monitoring method as described in any of the above claims.

[0015] This embodiment provides a tire pressure monitoring method that acquires first monitoring data recorded before vehicle startup, including monitoring data for each tire of the vehicle. Based on the first monitoring data, it determines whether each tire is in a low-pressure state. If any tire is in a low-pressure state, a low-pressure alarm command is generated, which instructs the vehicle to output a low-pressure alarm signal. As can be seen from the above, this application determines whether each tire is in a low-pressure state based on the first monitoring data recorded before vehicle startup, and generates a low-pressure alarm command when any tire is in a low-pressure state. This eliminates the need to acquire tire pressure data after vehicle startup, improving the timeliness of low-pressure alarms and the safety of vehicle driving.

[0016] Understandably, the tire pressure monitoring device of the second aspect, the electronic device of the third aspect, the vehicle of the fourth aspect, and the computer-readable storage medium of the fifth aspect all correspond to the tire pressure monitoring method of the first aspect. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding tire pressure monitoring methods provided above, and will not be repeated here. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating an application scenario of the tire pressure monitoring method provided in one embodiment of this application.

[0018] Figure 2 This is a flowchart illustrating the implementation of a tire pressure monitoring method according to an embodiment of this application.

[0019] Figure 3 This is a flowchart illustrating the implementation of a tire pressure monitoring method provided in an embodiment of this application when the tire is not in a low-pressure state.

[0020] Figure 4 The flowchart illustrates the implementation of the tire pressure monitoring method prior to step S201 in an embodiment of this application.

[0021] Figure 5 This is a flowchart illustrating the implementation of the tire pressure monitoring method after step S201 in an embodiment of this application.

[0022] Figure 6 This is a flowchart illustrating the implementation of step S202 in a tire pressure monitoring method provided in an embodiment of this application.

[0023] Figure 7 This is a schematic diagram of the functional modules of a tire pressure monitoring device 100 provided in an embodiment of this application.

[0024] Component Symbol Explanation Vehicle 1 Electronic devices 10 Memory 11 Processor 12 Tire pressure monitoring device 100 Data acquisition module 110 Tire pressure monitoring module 120 Low voltage alarm module 130 The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the embodiments of this application, it should be noted that, unless otherwise expressly specified and limited, the word "for example" is used to indicate an example, illustration, or description. Any embodiment or design scheme described as "for example" in the embodiments of this application should not be construed as being better or more advantageous than other embodiments or design schemes. Specifically, the use of the word "for example" is intended to present the relevant concepts in a specific manner.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. Furthermore, in the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Please see Figure 1 This is a schematic diagram illustrating an application scenario of the tire pressure monitoring method provided in an embodiment of this application.

[0031] In some embodiments of this application, the tire pressure monitoring method can be applied to one or more electronic devices 10. The electronic devices 10 can be used in a vehicle 1. Each electronic device 10 is a device capable of automatically performing numerical calculations and / or information processing according to pre-set or stored instructions. Its hardware includes, but is not limited to, microprocessors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and embedded devices. For example, the electronic device 10 can be an in-vehicle device, or other devices such as mobile phones, tablets, laptops, personal computers (PCs), and servers capable of communicating and exchanging data with the vehicle 1. The in-vehicle device can be a body control module (BCM) and a vehicle control unit (VCU), etc.

[0032] In some embodiments of this application, vehicle 1 also includes a tire pressure monitoring system (not shown), which is used to collect tire pressure data for each tire of the vehicle.

[0033] In some embodiments of this application, the electronic device 10 can be communicatively connected to devices such as desktop computers, laptops, handheld computers, and cloud servers.

[0034] In some embodiments of this application, the electronic device 10 may further include network devices and / or client devices. These network devices include, but are not limited to, a single network server, a server group consisting of multiple network servers, and a cloud server based on cloud computing, consisting of a large number of hosts or network servers.

[0035] In some embodiments of this application, the network where the electronic device 10 is located includes, but is not limited to, the Internet, wide area network, metropolitan area network, local area network, virtual private network (VPN), etc.

[0036] In the embodiments of this application, the electronic device 10 can be used to acquire first monitoring data recorded before the vehicle starts, and based on the first monitoring data, determine whether each tire is in a low-pressure state, so as to generate a low-pressure alarm command when any tire is in a low-pressure state, thereby achieving the technical effect of improving the timeliness of the low-pressure alarm and the driving safety of the vehicle.

[0037] Please see Figure 2 This is a schematic diagram illustrating the steps of a tire pressure monitoring method provided in an embodiment of this application. The tire pressure monitoring method of this application embodiment is applied to, for example... Figure 1 The electronic device 10 shown. Specifically, the tire pressure monitoring method includes the following steps. Depending on different needs, the order of some steps in this flowchart can be changed, and some steps can be omitted.

[0038] S201: Obtain the first monitoring data recorded before the vehicle starts. The first monitoring data includes monitoring data for each tire of the vehicle.

[0039] In some embodiments of this application, the first monitoring data includes monitoring data for each tire of the vehicle. For example, if the vehicle is a sedan, the first monitoring data may include monitoring data for the left front tire, right front tire, left rear tire, and right rear tire. If the vehicle is a van, the first monitoring data may include monitoring data for more tires. This embodiment does not limit the specific number of tires. The monitoring data is obtained from the Tire Pressure Monitoring System (TPMS) before the vehicle starts. Before starting the vehicle, it may be in a low-energy state (e.g., hibernation). At this time, the vehicle's BCM controller is also in a low-energy state, but the BCM controller needs to retain the function of receiving and recording the first monitoring data to ensure that the BCM controller temporarily stores the first monitoring data after receiving it from the TPMS. For example, the BCM controller can temporarily store the first monitoring data in Random Access Memory (RAM), and then read the recorded first monitoring data from the RAM when the vehicle starts, and perform subsequent tire pressure monitoring steps based on the read first monitoring data.

[0040] Specifically, in this embodiment, when the vehicle's BCM controller is in a sleep state, the receiving module (such as the radio frequency receiving module) of the BCM controller can be set to a low-power mode and power is supplied to the storage unit RAM memory. After the receiving module of the BCM controller receives the first monitoring data, it writes the first monitoring data into the RAM memory.

[0041] In some embodiments of this application, the first monitoring data may include one or more sets of monitoring data, each set containing monitoring data for each tire, such as monitoring data for the left front tire, right front tire, left rear tire, and right rear tire. In this embodiment, tire pressure monitoring can be performed based on one set of monitoring data, or simultaneously based on multiple sets of monitoring data. The number of sets of monitoring data included in the first monitoring data is not limited in this embodiment.

[0042] In a specific implementation, if the first monitoring data includes a set of monitoring data, the vehicle in this embodiment needs to simulate one transition after starting to indicate that a set of monitoring data has been received. If the first monitoring data includes three sets of monitoring data, the vehicle in this embodiment needs to simulate three transitions after starting to indicate the number of sets of monitoring data received.

[0043] For example, taking a maximum of 3 sets of monitoring data in the first monitoring data set as an example, if only 1 set of monitoring data is recorded before the vehicle starts, a transition is simulated within a preset time interval after the vehicle starts (e.g., 60ms), indicating that 1 set of monitoring data has been received. The preset time interval can be adjusted according to the number of monitoring data sets. For example, if 2 sets of monitoring data are recorded before the vehicle starts, a transition is simulated at 40ms and 60ms after the vehicle starts, respectively, indicating that 2 sets of monitoring data have been received. If 3 sets of monitoring data are recorded before the vehicle starts, a transition is simulated at 20ms, 40ms, and 60ms after the vehicle starts, respectively, indicating that 3 sets of monitoring data have been received. Only then can the vehicle's BCM control determine whether to output a low-pressure alarm command based on the received monitoring data.

[0044] In some embodiments of this application, when the vehicle is in a low-power state, the vehicle's tire pressure monitoring system can send monitoring data to the BCM controller at relatively long first intervals, thereby reducing the energy consumption of the BCM controller and the tire pressure monitoring system. The first interval includes, but is not limited to, 1 hour, 2 hours, etc., and this embodiment does not limit the first interval. Furthermore, if the vehicle's sleep time is long, multiple first monitoring data sets may be received. For example, if the first interval is 1 hour and the vehicle sleeps for more than 2 hours, the BCM controller can receive at least two sets of first monitoring data sets sent by the tire pressure monitoring system. Therefore, after the vehicle starts, the BCM controller can determine whether each tire is in a low-pressure state based on the latest received set or more sets of first monitoring data sets. Based on the above, this embodiment does not limit the number of sets of first monitoring data sets.

[0045] S202: Based on the first monitoring data, determine whether each tire is in a low-pressure state.

[0046] In some embodiments of this application, the first monitoring data in this embodiment includes monitoring data for each tire, and the monitoring data for each tire includes the tire pressure value of the tire. Based on this, in this embodiment, a corresponding tire pressure threshold can be preset for each tire of the vehicle. Then, the tire pressure value in the monitoring data is compared with the corresponding tire pressure threshold. If the tire pressure value in the monitoring data is less than the corresponding tire pressure threshold, it is determined that the tire corresponding to the monitoring data is in a low-pressure state. By analogy, it can be determined whether each tire is in a low-pressure state. As long as any tire is in a low-pressure state, a low-pressure alarm command will be generated to instruct the vehicle to output a low-pressure alarm signal.

[0047] For example, taking a passenger car as an example, the tire pressure threshold can be 210 kPa or 200 kPa. If the tire pressure value in the monitoring data (such as 205 kPa) is less than the tire pressure threshold (such as 210 kPa), it is determined that the tire corresponding to the monitoring data is in a low pressure state, and a low pressure alarm command is generated.

[0048] In some embodiments of this application, the monitoring data for each tire may include the tire pressure value and tire temperature value (such as the tire temperature value). Based on this, in this embodiment, the corresponding tire pressure threshold may be determined first based on the tire temperature value. That is, the corresponding tire pressure threshold may also be different when the tire temperature value is different. After determining the tire pressure threshold, the tire pressure threshold is compared with the tire pressure value in the monitoring data. If the tire pressure value in the monitoring data is less than the corresponding tire pressure threshold, it is determined that the tire corresponding to the monitoring data is in a low pressure state.

[0049] In some embodiments of this application, the tire pressure threshold may include a high pressure threshold and a low pressure threshold. For example, if the tire pressure value in this embodiment is less than the low pressure threshold, it is determined that the tire corresponding to the monitoring data is in a low pressure state, and a low pressure alarm command is generated. If the tire pressure value in this embodiment is greater than the low pressure threshold, it is determined that the tire corresponding to the monitoring data is in a high pressure state, and a high pressure alarm command is generated. The high pressure alarm command is used to instruct the vehicle to output a high pressure alarm signal. The high pressure alarm signal is used to prompt the driver, maintenance personnel, and other relevant personnel to deflate the tire so that the tire pressure is between the low pressure alarm threshold and the high pressure alarm threshold.

[0050] S203: If any tire is under-pressure, a low-pressure alarm command is generated. The low-pressure alarm command is used to instruct the vehicle to output a low-pressure alarm signal.

[0051] In some embodiments of this application, the low-pressure alarm signal includes, but is not limited to, a combination of one or more visual and auditory signals. The low-pressure alarm signal is used to alert the driver that one or more tires of the vehicle are in a low-pressure state and need to be inflated in time.

[0052] For example, taking a sedan as an example, the visual signal can be to display specific tire pressure data on the central control screen of the car, or to display a prompt such as "The right front tire pressure is low, please inflate it in time." When the driver sees the tire pressure data or the prompt, he can choose to pull over to the side of the road in time and use the onboard air pump to inflate the tires in time. Alternatively, the driver can drive the vehicle to the nearest auto repair shop for timely tire inflation to improve the safety of driving.

[0053] For example, the auditory signal can be a preset prompt tone or voice message such as "The right front tire pressure is low, please inflate it in time." The prompt tone or voice message is played through the vehicle's voice playback device. When the driver hears the prompt tone or voice message, he should inflate the tire in time.

[0054] Based on the above, in addition to the visual and auditory signals, the low-pressure alarm signal in this embodiment may also include tactile signals. For example, slight vibration of the steering wheel indicates that the tires are in a low-pressure state. This embodiment does not limit the specific form of the low-pressure alarm signal.

[0055] Based on the above embodiments, the tire pressure monitoring method in this embodiment acquires first monitoring data recorded before vehicle startup, including monitoring data for each tire of the vehicle; based on the first monitoring data, it determines whether each tire is in a low-pressure state; if any tire is in a low-pressure state, a low-pressure alarm command is generated, which instructs the vehicle to output a low-pressure alarm signal. As can be seen from the above, this embodiment determines whether each tire of the vehicle is in a low-pressure state based on the first monitoring data recorded before vehicle startup, and generates a low-pressure alarm command when any tire is in a low-pressure state, eliminating the need to acquire tire pressure data after vehicle startup, thus improving the timeliness of low-pressure alarms and the safety of vehicle driving.

[0056] like Figure 3 The diagram shown is a flowchart of a tire pressure monitoring method provided in another embodiment of this application. Figure 3 The process shown is as follows Figure 2 Another branch of the process in step S202 shown: S301: If each tire is not under pressure, continue to acquire the second monitoring data after the vehicle starts.

[0057] In some embodiments of this application, the second monitoring data includes monitoring data acquired from the tire pressure monitoring system after the vehicle is started. While it is not necessary to generate a low-pressure alarm command when it is determined that each tire of the vehicle is not in a low-pressure state, the tires may gradually enter a low-pressure state during vehicle operation due to reasons such as tire punctures. Therefore, it is still necessary to continuously acquire monitoring data for each tire as the second monitoring data. Based on the continuously acquired second monitoring data, it is continuously determined whether each tire is in a low-pressure state until any tire is detected to be in a low-pressure state or until the vehicle stops moving (e.g., the vehicle is turned off, or the vehicle has been stopped for a preset time). When any tire is in a low-pressure state, a low-pressure alarm command is generated.

[0058] In some embodiments of this application, when the vehicle is in the starting state, in order to ensure the safety of driving the vehicle, the vehicle's tire pressure monitoring system can send monitoring data to the BCM controller at short intervals of a second duration. The second duration can be 0.5 minutes, 1 minute, etc., and this embodiment does not limit the second duration.

[0059] S302: Based on the second monitoring data, determine whether each tire is in a low-pressure state.

[0060] In some embodiments of this application, the second monitoring data in this embodiment includes monitoring data for each tire, and the monitoring data for each tire includes the tire pressure value of the tire. Based on this, in this embodiment, a corresponding tire pressure threshold can be preset for each tire of the vehicle, and then the tire pressure value in the monitoring data is compared with the corresponding tire pressure threshold. If the tire pressure value in the monitoring data is less than the corresponding tire pressure threshold, it is determined that the tire corresponding to the monitoring data is in a low-pressure state. By analogy, it can be determined whether each tire is in a low-pressure state. As long as any tire is in a low-pressure state, a low-pressure alarm command will be generated to instruct the vehicle to output a low-pressure alarm signal.

[0061] In some embodiments of this application, each tire may be determined to be in a low-pressure state based on one or more second monitoring data. When determining whether each tire is in a low-pressure state based on multiple second monitoring data, each tire is determined to be in a low-pressure state based on each second monitoring data. If it is determined that a tire is in a low-pressure state based on each second monitoring data, a low-pressure alarm signal is generated. If it is determined that no tire is in a low-pressure state based on each second monitoring data, no low-pressure alarm signal is generated, and the acquisition of the vehicle's second monitoring data continues. If it is determined that a tire is in a low-pressure state based on some second monitoring data, the acquisition of the vehicle's second monitoring data continues, and each tire is determined to be in a low-pressure state based on the second monitoring data, until the number of times that any tire is determined to be in a low-pressure state reaches a preset first number, at which point a low-pressure alarm command is generated.

[0062] For example, taking three consecutive sets of second monitoring data as an example, based on the three sets of second monitoring data acquired consecutively, where the first and second sets of second monitoring data determine that no tire is in a low-pressure state, and the third set of second monitoring data determines that a tire is in a low-pressure state, then the fourth and fifth sets of second monitoring data are acquired. If both the fourth and fifth sets of second monitoring data determine that a tire is in a low-pressure state, a low-pressure alarm command is generated. If both the fourth and fifth sets of second monitoring data determine that no tire is in a low-pressure state, then it indicates that the third set of second monitoring data has an error, and there is no need to generate a low-pressure alarm command.

[0063] In some embodiments of this application, when it is determined that a tire is in a low-pressure state, if the low-pressure tire is not inflated in time, the tire pressure value in the monitoring data sent by the tire pressure monitoring system to the BCM controller will always be lower than the tire pressure threshold. Therefore, the vehicle will continuously output a low-pressure alarm signal until the tire is inflated. After that, the tire pressure value in the monitoring data sent by the tire pressure monitoring system to the BCM controller will be greater than or equal to the tire pressure threshold, and the vehicle will stop outputting the low-pressure alarm signal.

[0064] S303: If any tire is under-pressure, generate a low-pressure alarm command.

[0065] In some embodiments of this application, the low-pressure alarm signal includes, but is not limited to, a combination of one or more visual and auditory signals. The low-pressure alarm signal is used to alert the driver that one or more tires of the vehicle are in a low-pressure state and need to be inflated in time.

[0066] If no tire is not in a low-pressure state, it means that the tire pressure values ​​of all tires in the vehicle are higher than the tire pressure threshold. In other words, the tire pressure values ​​of all tires in the vehicle are normal. However, in order to ensure the safety of driving the vehicle, it is necessary to continuously acquire the vehicle's second monitoring data and continuously monitor the tire pressure value of each tire based on the second monitoring data. When the tire pressure value of any tire is lower than the tire pressure threshold, a low-pressure alarm command will be generated in time, so that the vehicle can output a low-pressure alarm command based on the low-pressure alarm command, prompting the driver to inflate the tires in time.

[0067] Based on the above embodiments, this embodiment continuously acquires the second monitoring data of the vehicle upon vehicle startup, and continuously monitors whether each tire is in a low-pressure state based on the second monitoring data, thereby achieving real-time monitoring of tire pressure during vehicle operation and improving vehicle driving safety.

[0068] like Figure 4 The diagram shown is a flowchart of a tire pressure monitoring method provided in another embodiment of this application.

[0069] S401: Continuously acquire the first monitoring data before the vehicle starts.

[0070] In some embodiments of this application, before the vehicle is started, the vehicle's BCM controller is in a low-power state. At this time, the BCM controller acquires the first monitoring data collected by the tire pressure monitoring system and stores the first monitoring data in the RAM memory. When the BCM controller is in a low-power state for a long time, the BCM controller records multiple first monitoring data into the RAM memory.

[0071] In some embodiments of this application, before the vehicle is started, the vehicle is in a low-power state. The vehicle's tire pressure monitoring system can send monitoring data to the BCM controller once at a relatively long first time interval, thereby reducing the energy consumption of the BCM controller and the tire pressure monitoring system. The first time interval includes, but is not limited to, 1 hour, 2 hours, etc. In this embodiment, the first time interval is not limited.

[0072] S402: If the number of recorded first monitoring data reaches a preset first quantity, each time the latest first monitoring data is obtained, the earliest recorded first monitoring data is deleted according to the first-in-first-out principle, and the latest first monitoring data is recorded.

[0073] In some embodiments of this application, the earlier the recording time of the first monitoring data, the worse its timeliness. Therefore, each time the latest first monitoring data is obtained, the earliest recorded first monitoring data is deleted according to the first-in-first-out principle, and the latest first monitoring data is recorded. For example, the latest acquired first monitoring data is written to the RAM memory, and the earliest recorded first monitoring data in the RAM memory is deleted. Thus, deleting one first monitoring data from the RAM memory while simultaneously writing one first monitoring data can ensure that the number of first monitoring data written to the RAM memory is always maintained at the first quantity. The first quantity includes, but is not limited to, 3 groups, 5 groups, etc., and is not limited to the first quantity in this embodiment.

[0074] In one embodiment, step S202 in the above embodiment can be refined into the following steps: based on each group of first monitoring data, determine whether each tire is in a low-pressure state; if based on each group of first monitoring data, it is determined that there is a tire in a low-pressure state, generate a low-pressure alarm command.

[0075] Specifically, in this embodiment, it is necessary to determine whether each tire is in a low-pressure state based on each set of first monitoring data. If it is determined that there is a tire in a low-pressure state based on each set of first monitoring data, a low-pressure alarm command is generated.

[0076] For example, taking three sets of first monitoring data as an example, if each set of first monitoring data determines that the right front tire is in a low-pressure state, it means that the right front tire pressure is low and needs to be inflated in time. A low-pressure alarm command needs to be generated so that the vehicle can output a low-pressure alarm signal to remind the driver that the right front tire needs to be inflated. If the first set of first monitoring data determines that the right front tire is in a low-pressure state, but the second and third sets of first monitoring data both determine that no tire is in a low-pressure state, it means that the first set of first monitoring data may have an error, and there is no need to generate a low-pressure alarm command.

[0077] like Figure 5 The diagram shown is a flowchart of a tire pressure monitoring method according to another embodiment of this application. In some embodiments of this application, Figure 5 The process shown can be implemented in, for example... Figure 2 The process is executed after step S201 in the flowchart shown.

[0078] S501: Determine whether the number of groups of the first monitoring data is greater than or equal to the preset second number.

[0079] In some embodiments of this application, the determination of whether each tire is in a low-pressure state can be based on a second quantity of first monitoring data. That is, the number of sets of first monitoring data recorded before vehicle startup needs to reach the second quantity. However, if the vehicle is in a low-power state for a short period, the number of sets of first monitoring data may not reach the second quantity. In this case, it is unnecessary to determine whether each tire is in a low-pressure state based on the second quantity of first monitoring data. Therefore, after vehicle startup, it is necessary to first determine whether the number of sets of first monitoring data is equal to the second quantity. If the number of sets of first monitoring data is greater than or equal to the second quantity, the determination of whether each tire is in a low-pressure state is based on the first monitoring data. If the number of sets of first monitoring data is less than the second quantity, the determination can be made by combining the second monitoring data. It is necessary to obtain the second monitoring data after vehicle startup and use the second monitoring data to fill in the missing sets of the first monitoring data. In this case, the total number of the first and second monitoring data equals the second quantity.

[0080] S502: If the number of groups of the first monitoring data is greater than or equal to the second number, based on the first monitoring data, determine whether each tire is in a low-pressure state.

[0081] In some embodiments of this application, if the number of sets of the first monitoring data is greater than or equal to the second number, it indicates that the number of sets of the first monitoring data has reached the preset requirement. After the vehicle is started, it is directly determined whether each tire is in a low-pressure state based on the first monitoring data. When any tire is in a low-pressure state, a low-pressure alarm command is generated.

[0082] In some embodiments of this application, each tire can be determined to be in a low-pressure state based on each first monitoring data. If it is determined that a tire is in a low-pressure state based on each set of first monitoring data, a low-pressure alarm command is generated. If only one set of first monitoring data determines that a tire is in a low-pressure state, this set of first monitoring data may have errors, and there is no need to generate a low-pressure alarm command.

[0083] In some embodiments of this application, the second quantity of first monitoring data can be recorded in the form of a one-dimensional array. When performing low-pressure monitoring, the one-dimensional array is reduced to a 1×4-dimensional array, and then the 1×4-dimensional array is used to determine whether each tire is in a low-pressure state.

[0084] For example, taking a second quantity of 3 as an example, a second quantity of 3 means that 3 monitoring sessions were conducted. The 3 sets of first monitoring data can be recorded in a 1×12 dimensional array, such as [2.3, 2.4, 2.3, 2.5, 2.4, 2.5, 2.2, 2.2, 2.3, 2.4, 2.3, 2.4]. Among them, the first three data (tire pressure values ​​corresponding to indices 1, 2, and 3 in the 1×12 array) are the monitoring data collected from the left front tire in 3 sessions, and the last three data (tire pressure values ​​corresponding to indices 4, 5, and 6 in the 1×12 array) are... The monitoring data collected from the right front tire in three separate data points, the next three data points (tire pressure values ​​corresponding to indices 7, 8, and 9 in the 1×12 array) are the monitoring data collected from the left rear tire in three separate data points, and the last three data points (tire pressure values ​​corresponding to indices 10, 11, and 12 in the 1×12 array) are the monitoring data collected from the left rear tire in three separate data points. The 1×12 array is then grouped and aggregated to obtain a 1×4 dimensionality-reduced array [2.33, 2.47, 2.23, 2.37]. Finally, based on the 1×4 dimensionality-reduced array, it is determined whether each tire is in a low-pressure state.

[0085] S503: If the number of groups of the first monitoring data is less than the number of the second data, continue to acquire the second monitoring data after the vehicle starts.

[0086] In some embodiments of this application, if the number of sets of the first monitoring data is less than the second quantity, in order to ensure the accuracy of the low pressure alarm, the second monitoring data after the vehicle is started is continuously acquired so that the total number of sets of the first monitoring data and the second monitoring data is equal to the second quantity. Then, based on the first monitoring data and the second monitoring data, it is determined whether each tire is in a low pressure state.

[0087] S504: When the total number of sets of the first monitoring data and the second monitoring data is equal to the second quantity, based on the first monitoring data and the second monitoring data, determine whether each tire is in a low-pressure state, so as to generate a low-pressure alarm command when any tire is in a low-pressure state.

[0088] In some embodiments of this application, if it is determined, based on both the first and second monitoring data, that no tire is in a low-pressure state, no low-pressure alarm command needs to be generated. If it is determined, based on one set of first monitoring data or one set of second monitoring data, that a tire is in a low-pressure state, but based on the remaining first or second monitoring data, it is determined that no tire is in a low-pressure state, it is considered that one set of first or second monitoring data has an error, and no low-pressure alarm command needs to be generated. If it is determined, based on both the first and second monitoring data, that a tire is in a low-pressure state, a low-pressure alarm command is generated.

[0089] Based on the content disclosed in the above embodiments, this embodiment uses a second quantity of first monitoring data or second monitoring data to determine whether each tire is in a low-pressure state, which solves the problem of false alarms that may occur when the first monitoring data is insufficient, and improves the accuracy of vehicle low-pressure alarm.

[0090] like Figure 6 The diagram shown is a flowchart illustrating the determination of low tire pressure based on first monitoring data in one embodiment of this application. Figure 2 The flowchart below shows a detailed breakdown of step S202 in the process described. The first monitoring data includes the tire temperature and tire pressure values ​​for each tire.

[0091] S601: Determine the tire pressure threshold for each tire based on the tire temperature value of each tire.

[0092] In some embodiments of this application, a temperature threshold lookup table can be pre-constructed, storing tire pressure values ​​corresponding to different tire temperatures. Tire temperatures are obtained from the first monitoring data, and then the corresponding tire pressure threshold is matched against the temperature threshold lookup table. Thus, the tire pressure threshold for each tire can be determined based on its temperature value. The tire pressure values ​​corresponding to the tire temperatures in the temperature threshold lookup table can be obtained through laboratory testing or research experience. This embodiment does not limit the method of obtaining the tire pressure values ​​corresponding to the tire temperatures. If a tire temperature value is not found in the temperature threshold lookup table, the corresponding tire pressure threshold is calculated using linear interpolation based on the tire pressure thresholds corresponding to adjacent tire temperatures greater than or less than the current tire temperature value.

[0093] In some embodiments of this application, the corresponding tire pressure threshold can be calculated based on the tire temperature value. The formula for calculating the tire pressure threshold based on the tire temperature value is as follows: in, Indicates the low-pressure alarm threshold. This indicates the cold reference tire pressure. This indicates the tire temperature value. This represents the alarm threshold coefficient, such as 0.8. This represents the absolute temperature corresponding to the cold reference temperature. It indicates thermodynamic temperature. Cold reference tire pressure can be the recommended tire pressure when the tire is cold. The recommended tire pressure can be the tire pressure when the vehicle has been stationary for more than 3 hours and the tire temperature is the same as the ambient temperature.

[0094] S602: Determine whether each tire is under-inflated based on its tire pressure value and tire pressure threshold.

[0095] In some embodiments of this application, it can be determined in sequence whether the tire pressure value of the right front tire is less than the tire pressure threshold, whether the tire pressure value of the left front tire is less than the tire pressure threshold, whether the tire pressure value of the right rear tire is less than the tire pressure threshold, and whether the tire pressure value of the left rear tire is less than the tire pressure threshold. As long as the tire pressure value of any tire is less than the tire pressure threshold, a low pressure alarm command is generated, instructing the vehicle to output a low pressure alarm signal.

[0096] Based on the content disclosed in the above embodiments, this embodiment dynamically determines the corresponding tire pressure threshold according to the current tire temperature value, which can keep the tire within a safe range to the maximum extent and avoid the problem of reduced accuracy of low pressure alarm caused by a single tire pressure threshold.

[0097] Please see Figure 7 This is a schematic diagram of the functional modules of a tire pressure monitoring device 100 provided in an embodiment of this application.

[0098] In this embodiment, based on the above... Figure 2 Using the same concept as the tire pressure monitoring method in the illustrated embodiments, this application also provides a tire pressure monitoring device 100, which can be used to perform the above-described tire pressure monitoring method. For ease of explanation, the schematic diagram of the tire pressure monitoring device 100 embodiment only shows the parts related to the embodiments of this application. Those skilled in the art will understand that the illustrated structure does not constitute a limitation on the tire pressure monitoring device 100, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0099] Specifically, the tire pressure monitoring device 100 provided in this application embodiment includes a data acquisition module 110, a tire pressure judgment module 120, and a low-pressure alarm module 130. The data acquisition module 110 is used to acquire first monitoring data recorded before the vehicle starts, the first monitoring data including monitoring data for each tire of the vehicle; the tire pressure judgment module 120 is used to determine whether each tire is in a low-pressure state based on the first monitoring data; the low-pressure alarm module 130 is used to generate a low-pressure alarm command if any tire is in a low-pressure state, the low-pressure alarm command being used to instruct the vehicle to output a low-pressure alarm signal, thereby improving the timeliness of the vehicle's low-pressure alarm and vehicle driving safety.

[0100] Combination Figure 1 As shown, in some embodiments of this application, the electronic device 10 includes, but is not limited to, a memory 11, a processor 12, and a computer program stored in the memory 11 and executable on the processor 12, such as a tire pressure monitoring program, which, when executed by the processor, implements the tire pressure monitoring method as described in the above embodiments.

[0101] Figure 1 Only the electronic device 10 with memory 11 and processor 12 is shown. It will be understood by those skilled in the art that... Figure 1 The structure shown does not constitute a limitation on the electronic device 10, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0102] The memory 11 in the electronic device 10 stores multiple computer-readable instructions to implement a tire pressure monitoring method. The processor 12 can execute multiple instructions to achieve: acquiring first monitoring data recorded before the vehicle 1 is started, and determining whether each tire is in a low-pressure state based on the first monitoring data, so as to generate a low-pressure alarm instruction when any tire is in a low-pressure state, thereby achieving the technical effect of improving the timeliness of low-pressure alarm and vehicle driving safety.

[0103] Specifically, the processor 12's implementation method for the above instructions can be found in [reference needed]. Figure 2 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0104] Those skilled in the art will understand that the schematic diagram is merely an example of the electronic device 10 and does not constitute a limitation on the electronic device 10. The electronic device 10 can be a bus topology or a star topology. The electronic device 10 may also include more or fewer other hardware or software than shown in the diagram, or different component arrangements. For example, the electronic device 10 may also include input / output devices, network access devices, etc.

[0105] It should be noted that electronic device 10 is only an example. Other existing or future electronic products that are suitable for this application should also be included within the scope of protection of this application and are incorporated herein by reference.

[0106] The memory 11 includes at least one type of computer-readable storage medium, which can be non-volatile or volatile. Computer-readable storage media include flash memory, portable hard drives, multimedia cards, card-type memories (e.g., SD memory, DX memory, etc.), magnetic memory, magnetic disks, optical disks, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 10, such as the portable hard drive of the electronic device 10. In other embodiments, the memory 11 can also be an external storage device of the electronic device 10, such as a plug-in portable hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the electronic device 10. The memory 11 can be used not only to store application software and various types of data installed on the electronic device 10, such as the code of a tire pressure monitoring program, but also to temporarily store data that has been output or will be output.

[0107] In some embodiments, the processor 12 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits packaged with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 12 is the control unit of the electronic device 10, connecting various components of the electronic device 10 via various interfaces and lines. It executes programs or modules stored in the memory 11 (e.g., executing a tire pressure monitoring program) and calls data stored in the memory 11 to perform various functions and process data for the electronic device 10.

[0108] The processor 12 executes the operating system of the electronic device 10 and various installed applications. The processor 12 executes these applications to implement the steps described in each of the above embodiments of the tire pressure monitoring method, for example... Figure 2 The steps are shown.

[0109] For example, a computer program may be divided into one or more modules / units, one or more of which are stored in memory 11 and executed by processor 12 to complete this application. One or more modules / units may be a series of computer-readable instruction segments capable of performing a specific function, which describe the execution process of the computer program in electronic device 10. For example, the computer program may be divided into an acquisition module 110, a determination module 120, and a compensation module 130.

[0110] The integrated unit implemented as a software functional module described above can be stored in a computer-readable storage medium. This software functional module, stored in a storage medium, includes several instructions to cause a computer device (which may be a personal computer, computer equipment, or network device, etc.) or processor to execute a portion of a tire pressure monitoring method according to various embodiments of this application.

[0111] If the modules / units integrated in the electronic device 10 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware devices. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above.

[0112] Computer programs include computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. Computer-readable media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory, and other types of memory.

[0113] Furthermore, the computer-readable storage medium may primarily include a stored program area and a stored data area, wherein the stored program area may store the operating system, an application program required for at least one function, etc.; and the stored data area may store data created based on the use of blockchain nodes, etc.

[0114] The bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of representation, in... Figure 1 The symbol is represented by only one arrow, but this does not mean that there is only one bus or one type of bus. The bus is configured to implement communication between memory 11 and at least one processor 12, etc.

[0115] This application also provides a computer-readable storage medium (not shown) storing computer-readable instructions, which are executed by a processor in an electronic device to implement a tire pressure monitoring method of any of the above embodiments.

[0116] 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 modules is only a logical functional division, and other division methods may be used in actual implementation.

[0117] The modules described as separate components may or may not be physically separate. The components shown as modules 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 modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0118] Furthermore, the functional modules 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 in the form of hardware plus software functional modules.

[0119] Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices described in the specification may also be implemented by a single unit or device through software or hardware. Terms such as "first," "second," etc., are used to indicate names and do not indicate any specific order.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A tire pressure monitoring method characterized by, The method comprises: acquiring first monitoring data recorded before the vehicle starts, the first monitoring data comprising monitoring data of each tire of the vehicle; judging whether each tire is in a low-pressure state based on the first monitoring data; if any tire is in the low-pressure state, generating a low-pressure alarm instruction, the low-pressure alarm instruction being used to instruct the vehicle to output a low-pressure alarm signal.

2. The tire pressure monitoring method according to claim 1, wherein The method further comprises: if none of the tires is in the low-pressure state, continuously acquiring second monitoring data after the vehicle starts; judging whether each tire is in a low-pressure state based on the second monitoring data; if any tire is in the low-pressure state, generating the low-pressure alarm instruction.

3. The tire pressure monitoring method of claim 1, wherein, Before the acquiring of the first monitoring data recorded before the vehicle starts, the method further comprises: continuously acquiring first monitoring data before the vehicle starts; if the recorded first monitoring data reaches a preset first quantity, deleting the first monitoring data recorded earliest in time according to a first-in-first-out principle and recording the latest first monitoring data each time the latest first monitoring data is acquired.

4. The tire pressure monitoring method of claim 3, wherein, The judging of whether each tire is in a low-pressure state based on the first monitoring data comprises: judging whether each tire is in the low-pressure state based on each group of first monitoring data respectively; if it is determined based on each group of first monitoring data that there is a tire in the low-pressure state, generating the low-pressure alarm instruction.

5. The tire pressure monitoring method of claim 1, wherein, After the acquiring of the first monitoring data recorded before the vehicle starts, the method further comprises: judging whether the number of groups of the first monitoring data is greater than or equal to a preset second quantity; if the number of groups of the first monitoring data is greater than or equal to the second quantity, judging whether each tire is in a low-pressure state based on the first monitoring data; if the number of groups of the first monitoring data is less than the second quantity, continuously acquiring second monitoring data after the vehicle starts; when the total number of groups of the first monitoring data and the second monitoring data is equal to the second quantity, judging whether each tire is in the low-pressure state based on the first monitoring data and the second monitoring data, so as to generate the low-pressure alarm instruction when any tire is in the low-pressure state.

6. The tire pressure monitoring method of claim 1 wherein, The first monitoring data comprises tire temperature data of each tire and tire pressure data of each tire; The judging of whether each tire is in a low-pressure state based on the first monitoring data comprises: determining a tire pressure threshold of each tire based on the tire temperature data of each tire; judging whether each tire is in the low-pressure state according to the tire pressure data of each tire and the tire pressure threshold of each tire.

7. A tire pressure monitoring device characterized by comprising: The method comprises: a data acquisition module, configured to acquire first monitoring data recorded before a vehicle starts, the first monitoring data comprising monitoring data of each tire of the vehicle; a tire pressure judgment module, configured to judge whether each tire is in a low-pressure state based on the first monitoring data; a low-pressure alarm module, configured to generate a low-pressure alarm instruction if any tire is in the low-pressure state, the low-pressure alarm instruction being used to instruct the vehicle to output a low-pressure alarm signal.

8. An electronic device, comprising: The electronic device comprises a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the computer program, when executed by the processor, implements the tire pressure monitoring method according to any one of claims 1 to 6.

9. A vehicle characterized by comprising: The vehicle comprises the electronic device according to claim 8.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program, when executed by the processor, implements the tire pressure monitoring method according to any one of claims 1 to 6.

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