Tire pressure data transmission method and system and vehicle

Abstract

The invention discloses a tire pressure data transmission method and system and a vehicle, and relates to the technical field of data transmission. The method comprises the following steps: sending broadcast data to a tire pressure data receiving end of a vehicle, triggering the enabling of the tire pressure data receiving end and configuring periodic broadcast PAwR with response according to preset parameters, establishing connection with the tire pressure data receiving end in response to a connection request sent by the tire pressure data receiving end, and receiving response slot configuration information; according to the preset parameters sent by the tire pressure data receiving end, synchronizing with the tire pressure data receiving end, and finally responding to the periodic broadcast packet sent by the tire pressure data receiving end, and replying the periodic broadcast response packet with the tire pressure related data in the response slot specified by the response slot configuration information. Therefore, the problems of high power consumption, low receiving rate and high delay caused by the fact that the tire pressure sensor transmits the tire pressure data in a Bluetooth low-power-consumption broadcast mode are solved.

Description

Technical Field

[0001] This application relates to the field of data transmission technology, and more specifically, to a tire pressure data transmission method, system, and vehicle. Background Technology

[0002] Traditional Bluetooth tire pressure sensors (TPMS) typically use Bluetooth Low Energy (BLE), a traditional broadcast mode, to transmit tire pressure data, which has the following problems:

[0003] 1. High power consumption: Frequent broadcasting or maintaining a connection increases sensor power consumption and shortens battery life;

[0004] 2. Low reception rate: In complex electromagnetic environments such as high-speed movement or densely populated areas, broadcast data is easily lost, resulting in a low reception rate;

[0005] 3. High latency: Traditional broadcast mode has no acknowledgment mechanism, which cannot ensure reliable data transmission.

[0006] Therefore, improving the reception rate and reducing power consumption and latency are urgent problems to be solved when transmitting tire pressure data. Summary of the Invention

[0007] In view of this, the embodiments of this application aim to provide a tire pressure data transmission method, system and vehicle to solve the problems of high power consumption, low reception rate and high latency caused by the tire pressure sensor using Bluetooth Low Energy Broadcast mode to transmit tire pressure data.

[0008] In a first aspect, the present invention provides a tire pressure data transmission method, applied to a tire pressure sensing module supporting periodic broadcasts with response, the method comprising:

[0009] Broadcast data is sent to the tire pressure data receiver of the vehicle, triggering the tire pressure data receiver to enable periodic broadcast with response, and the periodic broadcast with response is configured with preset parameters.

[0010] In response to a connection request sent by the tire pressure data receiver, a connection is established with the tire pressure data receiver, and response slot configuration information is received;

[0011] Synchronize with the tire pressure data receiver according to the preset parameters sent by the tire pressure data receiver;

[0012] In response to the periodic broadcast packets sent by the tire pressure data receiver, a periodic broadcast response packet containing tire pressure-related data is replied in the response slot specified in the response slot configuration information.

[0013] In one possible implementation, the synchronization with the tire pressure data receiver based on preset parameters sent by the tire pressure data receiver includes:

[0014] Based on periodic broadcast synchronous transmission, the synchronization processing parameters are set according to the preset parameters;

[0015] Disconnect from the tire pressure data receiver;

[0016] The setting of synchronization processing parameters includes:

[0017] Based on the collection cycle of the tire pressure related data and the periodic broadcast interval parameter set in the preset parameters, a receiving cycle parameter is set. The receiving cycle parameter represents the number of periodic broadcast events that need to be skipped before receiving the next periodic broadcast packet after successfully receiving one periodic broadcast packet.

[0018] Set a receiving upper limit duration parameter, which represents the time limit between two consecutive successful receptions of the periodic broadcast packets.

[0019] In one possible implementation, the tire pressure data transmission method further includes:

[0020] The timer continues after a periodic broadcast packet is successfully received;

[0021] If the timing duration reaches the duration limit set based on the upper limit reception duration parameter, then stop counting based on the periodic broadcast interval parameter and directly receive the next periodic broadcast packet;

[0022] Determine whether the next periodic broadcast packet was successfully received when the timing duration reaches the upper limit of the reception duration parameter;

[0023] If it is determined that the next periodic broadcast packet has not been received, the broadcast data is retransmitted to connect and synchronize with the tire pressure data receiver.

[0024] In one possible implementation, the tire pressure data transmission method further includes:

[0025] Monitor whether the rate of change of the tire pressure-related data reaches a preset threshold;

[0026] When the rate of change reaches the preset threshold, the receiving period parameter is reduced to respond to the periodic broadcast response packet, so that the tire pressure data receiver can report a warning.

[0027] Secondly, the present invention provides another method for transmitting tire pressure data, applied at a tire pressure data receiving end, including:

[0028] In response to broadcast data sent by the tire pressure sensing module, enable periodic broadcasts with response, and configure the periodic broadcasts with response with preset parameters;

[0029] Establish a connection with the tire pressure sensing module to allocate a response slot to the tire pressure sensing module;

[0030] Synchronized with the tire pressure sensing module based on periodic broadcast synchronous transmission;

[0031] According to the preset parameters, a periodic broadcast packet is sent to the tire pressure sensing module to trigger the tire pressure sensing module to reply with a periodic broadcast response packet containing tire pressure-related data in the response slot assigned to it.

[0032] In one possible implementation, establishing the connection with the tire pressure sensing module includes:

[0033] Based on the broadcast data, determine whether the tire pressure sensing module supports periodic broadcasts with a response;

[0034] After determining that the tire pressure sensing module supports the periodic broadcast with response, a connection request is sent to the tire pressure sensing module to establish a connection with the tire pressure sensing module.

[0035] In one possible implementation, the synchronization with the tire pressure sensing module includes:

[0036] Send the preset parameters to the tire pressure sensing module;

[0037] The tire pressure sensing module is triggered to set synchronization processing parameters based on the preset parameters.

[0038] Thirdly, the present invention provides a tire pressure data transmission system applied to a tire pressure sensing module that supports periodic broadcasts with response, the system comprising:

[0039] The receiver enable configuration trigger unit is used to send broadcast data to the tire pressure data receiver of the vehicle, trigger the tire pressure data receiver to enable periodic broadcast with response, and configure the periodic broadcast with response with preset parameters.

[0040] The response slot configuration information receiving unit is used to establish a connection with the tire pressure data receiving end in response to a connection request sent by the tire pressure data receiving end, and to receive response slot configuration information.

[0041] The receiving end synchronization unit is used to synchronize with the tire pressure data receiving end according to the preset parameters sent by the tire pressure data receiving end;

[0042] The broadcast packet response unit is used to respond to the periodic broadcast packets sent by the tire pressure data receiving end by replying with a periodic broadcast response packet containing tire pressure related data in the response slot specified in the response slot configuration information.

[0043] Fourthly, the present invention provides another tire pressure data transmission system, applied at a tire pressure data receiving end, comprising:

[0044] The broadcast enable configuration unit enables periodic broadcasting with response in response to broadcast data sent by the tire pressure sensing module, and configures the periodic broadcasting with response with preset parameters.

[0045] A response slot allocation unit is used to establish a connection with the tire pressure sensing module and allocate response slots to the tire pressure sensing module.

[0046] The tire pressure sensing module synchronization unit is used to synchronize with the tire pressure sensing module through periodic broadcast synchronization transmission;

[0047] The tire pressure sensing module response triggering unit is used to send periodic broadcast packets to the tire pressure sensing module according to the preset parameters, so as to trigger the tire pressure sensing module to reply with periodic broadcast response packets containing tire pressure related data in the response slot allocated to it.

[0048] Fifthly, the present invention provides a vehicle, comprising: a vehicle body and a tire pressure data transmission system provided in the third and fourth aspects of the present invention.

[0049] According to the tire pressure data transmission method provided by this invention, a tire pressure sensing module supporting Periodic Advertising with Responses (PAwR) is applied to enable PAwR after broadcast data is sent to the vehicle's tire pressure data receiver. The PAwR is then configured with preset parameters. Subsequently, in response to a connection request from the PAwR, a connection is established with the PAwR, and response slot configuration information is received. Synchronization with the PAwR is performed based on the preset parameters sent by the PAwR, achieving the goal of responding to the PAwR packets sent by the PAwR by replying with a periodic broadcast response packet containing tire pressure-related data in the response slot specified in the response slot configuration information. This optimizes the communication of the tire pressure sensing module. Specifically, the periodic broadcast plus response mechanism ensures reliable reception of tire pressure data by the receiver (e.g., the vehicle's host module), improving data reception rate. The on-demand response mechanism reduces invalid broadcasts, thus extending the battery life of the tire pressure sensing module and reducing power consumption. In addition, thanks to PAWR's frequency hopping and timing optimization capabilities, data conflicts are effectively reduced, thereby improving the anti-interference capability of data transmission. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0051] Figure 1 The diagram shows a flowchart of a tire pressure data transmission method provided in an embodiment of the present invention.

[0052] Figure 2 The diagram shows the data interaction process between the sensor and the vehicle host when using the tire pressure data transmission method provided in this embodiment of the invention to transmit tire pressure-related data.

[0053] Figure 3 The diagram shows another tire pressure data transmission method provided in an embodiment of the present invention.

[0054] Figure 4 The diagram shown is a structural diagram of a tire pressure data transmission system provided in an embodiment of the present invention.

[0055] Figure 5 The diagram shown is a structural diagram of another tire pressure data transmission system provided in an embodiment of the present invention.

[0056] Figure 6 The diagram shown is a structural schematic of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0057] Unless otherwise defined, the technical or scientific terms used in the embodiments of this specification shall have the ordinary meaning understood by one of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to avoid confusion of constituent elements.

[0058] Unless the context otherwise requires, throughout this specification, "a plurality of" means "at least two," and "including" is interpreted as open-ended or encompassing, that is, "including, but not limited to." In the description of this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0059] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0060] As mentioned earlier, transmitting tire pressure data using traditional broadcast methods suffers from low receive rate, high power consumption, and high latency. To address this, technical solutions have emerged, such as increasing the broadcast frequency and optimizing antenna design. However, while increasing the broadcast frequency improves the receive rate to some extent, it significantly increases power consumption; and while optimizing antenna design improves interference resistance, it cannot solve the high power consumption problem. Therefore, these solutions cannot fundamentally resolve the contradiction between receive rate and power consumption.

[0061] This invention aims to solve the above-mentioned problems by using a tire pressure sensing module that supports PAwR to optimize the communication between the tire pressure sensing module and the tire pressure data receiver. Specifically, it uses a periodic broadcast + response mechanism to transmit tire pressure-related data, thereby ensuring that the tire pressure data receiver (such as an in-vehicle host with a Bluetooth receiver module that supports PAwR) can reliably receive tire pressure-related data and reducing invalid broadcasts, thus reducing power consumption.

[0062] Furthermore, the tire pressure data transmission method provided by the present invention is executed on a tire pressure sensing module that supports PAwR.

[0063] Based on the above, see Figure 1 , Figure 1 This is a flowchart of a tire pressure data transmission method provided in an embodiment of the present invention, such as... Figure 1 As shown, the process of this method may include:

[0064] S100: Send broadcast data to the tire pressure data receiver of the vehicle, trigger the tire pressure data receiver to enable periodic broadcast with response, and configure the periodic broadcast with response with preset parameters.

[0065] Specifically, the broadcast data sent by the tire pressure sensor module to the tire pressure data receiver is a connectable broadcast, that is, after the vehicle is powered on, the tire pressure sensor module triggers the tire pressure data receiver to configure and enable PAWR by sending broadcast data to the tire pressure data receiver.

[0066] Specifically, the tire pressure data receiver is usually the vehicle's onboard unit, but other modules that need to obtain tire pressure-related data are also possible, but no specific limitation is made here.

[0067] In some possible embodiments, the broadcast data sent by the sensor module uses a public type address, which includes an identifier and a flag pawrEn indicating whether PAwR is supported. This allows the tire pressure data receiver to verify whether the tire pressure sensor module is a known tire pressure sensor module through the identifier, avoiding connection to an incorrect tire pressure sensor module. The pawrEn flag indicates whether the tire pressure sensor module supports PAwR; for example, pawrEn = 1 indicates that the tire pressure sensor module supports PAwR, while pawrEn = 0 indicates that the tire pressure sensor module does not support PAwR.

[0068] Furthermore, when the tire pressure data receiver determines that the tire pressure sensor module supports PAwR based on pawrEn, it continues to perform subsequent operations, that is, PAwR is supported and PAwR is configured with preset parameters; when the tire pressure data receiver determines that the tire pressure sensor module does not support PAwR based on pawrEn, it uses traditional broadcast modes such as BLE to transmit data with the tire pressure sensor module.

[0069] Understandably, based on the application requirements of PAwR, the preset parameters mainly include: number of subevents (each event has one periodic broadcast packet), number of response slots (used to return the response after receiving the periodic broadcast packet), periodic advertising interval, periodic advertising subevent interval, periodic advertising response slot delay, and periodic advertising response slot spacing.

[0070] It should be noted that, in order to improve the reception rate of tire pressure related data transmission via PAwR and reduce power consumption, the preset parameters were determined in advance through extensive experimental research. In some possible embodiments, the preset parameters are configured as follows:

[0071] (1) Number of subevents = 3;

[0072] (2)number of response slot=4;

[0073] (3)Periodic Advertising Interval=1s;

[0074] (4)Periodic Advertising Subevent Interval=62.5ms;

[0075] (5)Periodic Advertising Response Slot Delay=25ms;

[0076] (6)Periodic Advertising Response Slot Spacing=6.25ms.

[0077] Experiments have shown that by configuring PAwR with the above preset parameters, the reception rate of tire pressure data exceeds 90%, and the power consumption is reduced by at least 30% compared with traditional broadcast modes such as BLE.

[0078] Furthermore, based on the above configuration, the tire pressure data receiver sends three periodic broadcast packets (AUX_SYNC_SUBEVENT_IND) every 1 second. By further optimizing the number of frames of data from the tire pressure sensor module received within the same periodic broadcast interval (e.g., three frames), the packet loss rate can be further reduced.

[0079] S110. In response to the connection request sent by the tire pressure data receiver, establish a connection with the tire pressure data receiver and receive the response slot configuration information.

[0080] Specifically, when the tire pressure data receiver receives broadcast data and determines that the tire pressure sensing module is a known module that supports PAwR, it initiates a connection request. The tire pressure sensing module responds to this connection request by establishing a connection with the tire pressure data receiver. This allows the tire pressure data receiver to set the response slot of the tire pressure sensing module through the connection, enabling each tire pressure sensing module in the vehicle to feed back tire pressure-related data to the tire pressure data receiver via a specific response slot, facilitating the vehicle's differentiation of the condition of each tire.

[0081] In some possible embodiments, the connection between the tire pressure data receiver and the tire pressure sensing module is identified by a connection handle. This allows the service UUID1 to be discovered and the characteristic UUID2 to be found through the connection handle. Then, the characteristic value of UUID2 is written, for example: value = response slot number (slot 0-slot 3). This ensures that, while ensuring that the written value is different for each tire pressure sensing module, the tire pressure-related data collected by each tire pressure sensing module can be fed back to the tire pressure data receiver through different response slots. In other words, it enables the configuration of each tire pressure sensing module by writing the value of characteristic UUID2 in service UUID1.

[0082] S120. Synchronize with the tire pressure data receiver according to the preset parameters sent by the tire pressure data receiver.

[0083] In this embodiment, the tire pressure data receiving end, through the connection established with the tire pressure sensing module, uses the LL_PERIODIC_SYNC_WR_IND command to send the preset parameters of PAWR to each tire pressure sensing module for synchronization.

[0084] Further, in a preferred embodiment, synchronization with the tire pressure data receiver is performed according to preset parameters sent by the tire pressure data receiver, including:

[0085] Based on periodic broadcast synchronous transmission, the synchronization processing parameters are set according to preset parameters;

[0086] Disconnect from the tire pressure data receiver;

[0087] The synchronization processing parameters include:

[0088] Based on the tire pressure related data acquisition cycle and the periodic broadcast interval parameter set in the preset parameters, the receiving cycle parameter is set. The receiving cycle parameter represents the number of periodic broadcast events that need to be skipped before receiving the next periodic broadcast packet after successfully receiving one periodic broadcast packet.

[0089] Set the upper limit duration parameter for receiving packets. The upper limit duration parameter represents the time limit between two consecutive successful receptions of periodic broadcast packets.

[0090] Specifically, synchronization is achieved through Periodic Advertising Sync Transfer (PAST). After setting the synchronization processing parameters, a receiving window can be opened according to the set parameters to receive AUX_SYNC_SUBEVENT_IND. After successfully receiving AUX_SYNC_SUBEVENT_IND, the connection is actively disconnected, thus realizing periodic synchronization between the tire pressure data receiving module and the tire pressure sensing module. Compared with the commonly used scan-based synchronization method, this effectively reduces power consumption.

[0091] More specifically, by setting the receive period parameter Skip, after successfully receiving a periodic broadcast packet, a corresponding number of periodic broadcast events can be skipped based on the set Skip before receiving the next periodic broadcast packet, thereby effectively reducing power consumption.

[0092] Furthermore, by configuring the upper limit of the reception duration parameter Sync_Timeout, which is the time limit between two consecutive successful receptions of periodic broadcast packets, the reliability of data reception can be guaranteed, and the reception rate can be further improved.

[0093] In a preferred embodiment, the tire pressure data transmission method further includes:

[0094] The timer continues after a periodic broadcast packet is successfully received;

[0095] If the timing duration reaches the duration limit set based on the upper limit of the reception duration parameter, the counting based on the periodic broadcast interval parameter will stop, and the next periodic broadcast packet will be received directly.

[0096] Determine whether the next periodic broadcast packet was successfully received when the timer reaches the maximum reception duration parameter;

[0097] If it is determined that the next periodic broadcast packet has not been received, the broadcast data is retransmitted to establish a connection and synchronization with the tire pressure data receiver.

[0098] Specifically, the method provided in this embodiment ensures that regardless of the Skip setting, when the timing duration after successfully receiving a periodic broadcast packet reaches the time limit set based on Sync_Timeout (i.e., when the timing duration is about to exceed Sync_Timeout), Skip will stop to receive periodic broadcast packets. Furthermore, if the next periodic broadcast packet is not received when Sync_Timeout is reached, synchronization is considered lost, and a broadcast is resent to reconnect and synchronize with the tire pressure data receiving module, thereby improving the reliability of tire pressure data transmission.

[0099] S130. In response to the periodic broadcast packet sent by the tire pressure data receiver, reply with a periodic broadcast response packet containing tire pressure related data in the response slot specified in the response slot configuration information.

[0100] Based on the above embodiments, taking a tire pressure sensing module as the sensor and an in-vehicle host with a Bluetooth receiver module supporting PAwR (such as NXP KW47) as an example, the data interaction process between the sensor and the in-vehicle host when performing tire pressure-related data transmission using the tire pressure data transmission method provided in the above embodiments is as follows: Figure 2 As shown. See also Figure 2The process mainly includes four steps: Step 1, the sensor initiates broadcasting, enabling the onboard host to perform passive scanning and RAWR. Step 2, the onboard host sets the sensor's response slot through its connection with the sensor. Step 3, synchronization is achieved via PAST. Step 4, tire pressure-related data is received. This four-step process optimizes the communication of the tire pressure sensor module. By utilizing PAWR, it ensures the onboard host reliably receives tire pressure-related data such as tire pressure, tire temperature, and battery level, improving the data reception rate and reducing invalid broadcasts, thus extending the battery life of the tire pressure sensor module and reducing power consumption. Furthermore, the Skip and Sync_Timeout settings during synchronization further improve data reception reliability, thus further increasing the data reception rate. It also supports millisecond-level response, making it suitable for high-speed driving scenarios.

[0101] Understandably, current Bluetooth receiver modules such as NXP cannot update the Skip in a timely manner after the tire pressure sensor module synchronizes. Instead, they need to wait until the original Skip ends and AUX_SYNC_SUBEVENT_IND is received before they can update. This results in the tire pressure-related data transmission frequency not being adjusted in a timely manner.

[0102] Based on this, in a preferred embodiment, the tire pressure data transmission method further includes:

[0103] Monitor whether the rate of change in tire pressure-related data reaches a preset threshold;

[0104] When the rate of change reaches a preset threshold, the receiving period parameter is reduced to respond to the periodic broadcast response packet, which is then used by the tire pressure data receiver to report a warning.

[0105] In this embodiment, by monitoring whether the rate of change of tire pressure-related data reaches a preset threshold, and when the rate of change reaches the preset threshold, i.e., when the tire pressure sensor module detects abnormalities such as excessively rapid changes in tire pressure, the receiving cycle parameter is reduced to respond to the periodic broadcast response packet, which is then used by the tire pressure data receiver to report a warning. This achieves the effect of responding to AUX_SYNC_SUBEVENT_RSP by rapidly reducing Skip, which allows tire pressure data receivers such as vehicle-mounted hosts to report warnings, thereby improving the accuracy and reliability of tire pressure monitoring.

[0106] In some possible embodiments, when the tire pressure sensing module detects an abnormality such as a rapid change in tire pressure, it immediately wakes up the receiver via a private hci instruction and adjusts and reduces Skip in response to AUX_SYNC_SUBEVENT_RSP.

[0107] This invention also provides a tire pressure data transmission method, which is executed on a tire pressure data receiving end having a Bluetooth receiving module that supports PAwR.

[0108] Based on the above, see Figure 3 , Figure 3 This is a flowchart of another tire pressure data transmission method provided in an embodiment of the present invention, such as... Figure 3 As shown, the process of this method may include:

[0109] S200, in response to the broadcast data sent by the tire pressure sensing module, enables periodic broadcast with response, and configures the periodic broadcast with response with preset parameters;

[0110] S210. Establish a connection with the tire pressure sensing module and allocate a response slot to the tire pressure sensing module.

[0111] S220, based on periodic broadcast synchronous transmission, synchronized with the tire pressure sensing module;

[0112] S230. According to preset parameters, send a periodic broadcast packet to the tire pressure sensing module to trigger the tire pressure sensing module to reply with a periodic broadcast response packet containing tire pressure-related data in the response slot assigned to it.

[0113] In this embodiment, the tire pressure data receiver enables the PAwR band by responding to the broadcast data sent by the tire pressure sensing module. After configuring the PAwR with preset parameters, it establishes a connection with the tire pressure sensing module and allocates a response slot to the tire pressure sensing module. For example, the response slot configuration information is written into the scheduling table of each tire pressure sensing module in the vehicle main module. Then, based on periodic broadcast synchronous transmission, it synchronizes with the tire pressure sensing module. This allows the tire pressure sensing module to respond with a periodic broadcast response packet containing tire pressure-related data in the response slot specified in the response slot configuration information when a periodic broadcast packet is sent to the tire pressure sensing module according to the preset parameters. This effectively improves the data reception rate and reduces power consumption by reducing invalid broadcasts, thereby extending the battery life of the tire pressure sensing module.

[0114] In a preferred embodiment, establishing a connection with the tire pressure sensing module includes:

[0115] Based on broadcast data, determine whether the tire pressure sensing module supports periodic broadcasts with a response;

[0116] After determining that the tire pressure sensor module supports periodic broadcasts with responses, a connection request is sent to the tire pressure sensor module to establish a connection with it.

[0117] In this embodiment, as described above, the tire pressure sensing module carries a flag indicating whether it supports PAwR in its broadcast data, allowing the tire pressure data receiver to determine whether the tire pressure sensing module supports PAwR through the flag carried in the broadcast data. Specifically, if PAwR is confirmed to be supported, a connection request is sent to the tire pressure sensing module to establish a connection; otherwise, the traditional broadcast mode is used to receive tire pressure-related data.

[0118] In a preferred embodiment, synchronization with the tire pressure sensing module includes:

[0119] Send preset parameters to the tire pressure sensor module;

[0120] The tire pressure sensor module is triggered to synchronize processing parameters based on preset parameters.

[0121] In this embodiment, as mentioned above, the synchronization processing parameters may include Skip, Sync_Timeout, etc.

[0122] The following section verifies the effectiveness of the tire pressure data transmission method provided in this application by applying the tire pressure data transmission method provided in the above embodiments and the traditional broadcast mode under the same conditions:

[0123] 1. The test item for Comparative Example 1, which uses the traditional broadcast mode, and Example 1, which applies the method provided in the above embodiments, is the bench static frame reception rate. As shown in Tables 1 and 2 below, under the conditions of identical test location, test environment, and tire pressure sensor model, the test results for Comparative Example 1, which uses a CAN bus to receive tire pressure-related data sent by the tire pressure sensors, are as follows: the average frame reception rate on the CAN bus for the four tire pressure sensors is 78.46%. The test result for Example 1 is 99.53%. It is evident that the tire pressure data transmission method provided in this application significantly improves the bench static frame reception rate compared to the broadcast mode.

[0124] Table 1. Test results of static frame reception rate of the test bench in broadcast mode.

[0125]

[0126]

[0127] Table 2. Test results of static frame reception rate on the benchtop in PAwR mode.

[0128]

[0129] 2. The test item for Comparative Example 2, which uses the traditional broadcast mode, and Example 2, which applies the method provided in the above embodiments, is the real vehicle dynamic frame reception rate. As shown in Tables 3 and 4 below, under the same conditions of test location, test environment, and tire pressure sensor model, and by using the same CAN bus to receive tire pressure-related data sent by the tire pressure sensors, the test results for Comparative Example 2 are as follows: the average frame reception rate on the CAN bus for the four tire pressure sensors is 67.33%. The test result for Example 2 is 88.33%. It can be seen that the tire pressure data transmission method provided in this application significantly improves the real vehicle dynamic frame reception rate compared to the broadcast mode.

[0130] Table 3. Test results of real vehicle dynamic frame reception rate in broadcast mode.

[0131]

[0132] Table 4. Test results of real vehicle dynamic frame reception rate under PAwR mode.

[0133]

[0134]

[0135] The following describes a tire pressure data transmission system provided by an embodiment of the present invention. The tire pressure data transmission system described below can be considered as a modular architecture for implementing a tire pressure data transmission method provided by an embodiment of the present invention; the following description can be referred to in conjunction with the above.

[0136] See Figure 4 , Figure 4 This is a structural block diagram of a tire pressure data transmission system provided in an embodiment of the present invention. The system is applied to a tire pressure sensing module that supports periodic broadcasts with responses and may include:

[0137] The receiver enable configuration trigger unit 10 is used to send broadcast data to the tire pressure data receiver of the vehicle, trigger the tire pressure data receiver to enable periodic broadcast with response, and configure the periodic broadcast with response with preset parameters.

[0138] The response slot configuration information receiving unit 20 is used to establish a connection with the tire pressure data receiving end in response to a connection request sent by the tire pressure data receiving end, and to receive response slot configuration information.

[0139] The receiving end synchronization unit 30 is used to synchronize with the tire pressure data receiving end according to the preset parameters sent by the tire pressure data receiving end;

[0140] The broadcast packet response unit 40 is used to respond to the periodic broadcast packets sent by the tire pressure data receiver by replying with a periodic broadcast response packet containing tire pressure related data in the response slot specified in the response slot configuration information.

[0141] Optionally, the receiver synchronization unit 30 is specifically used for:

[0142] Based on periodic broadcast synchronous transmission, the synchronization processing parameters are set according to preset parameters;

[0143] Disconnect from the tire pressure data receiver;

[0144] The synchronization processing parameters include:

[0145] Based on the tire pressure related data acquisition cycle and the periodic broadcast interval parameter set in the preset parameters, the receiving cycle parameter is set. The receiving cycle parameter represents the number of periodic broadcast events that need to be skipped before receiving the next periodic broadcast packet after successfully receiving one periodic broadcast packet.

[0146] Set the upper limit duration parameter for receiving packets. The upper limit duration parameter represents the time limit between two consecutive successful receptions of periodic broadcast packets.

[0147] Optionally, the broadcast packet response unit 40 is also used for:

[0148] The timer continues after a periodic broadcast packet is successfully received;

[0149] If the timing duration reaches the duration limit set based on the upper limit of the reception duration parameter, the counting based on the periodic broadcast interval parameter will stop, and the next periodic broadcast packet will be received directly.

[0150] Determine whether the next periodic broadcast packet was successfully received when the timer reaches the maximum reception duration parameter;

[0151] If it is determined that the next periodic broadcast packet has not been received, the broadcast data is retransmitted to establish a connection and synchronization with the tire pressure data receiver.

[0152] Optionally, the broadcast packet response unit 40 is also specifically used for:

[0153] Monitor whether the rate of change in tire pressure-related data reaches a preset threshold;

[0154] When the rate of change reaches a preset threshold, the receiving period parameter is reduced to respond to the periodic broadcast response packet, which is then used by the tire pressure data receiver to report a warning.

[0155] This invention also provides another tire pressure data transmission system. The tire pressure data transmission system described below can be considered as a modular architecture for implementing another tire pressure data transmission method provided in this invention. The following description can be referenced in conjunction with the above.

[0156] See Figure 5 , Figure 5 This is a structural block diagram of another tire pressure data transmission system provided in an embodiment of the present invention. This system is applied to a tire pressure data receiving end and may include:

[0157] The broadcast enable configuration unit 50, in response to the broadcast data sent by the tire pressure sensing module, enables periodic broadcasts with response and configures periodic broadcasts with response with preset parameters.

[0158] The response slot allocation unit 60 is used to establish a connection with the tire pressure sensing module and allocate response slots to the tire pressure sensing module.

[0159] The tire pressure sensor module synchronization unit 70 is used to synchronize with the tire pressure sensor module through periodic broadcast synchronization transmission;

[0160] The tire pressure sensing module response triggering unit 80 is used to send periodic broadcast packets to the tire pressure sensing module according to preset parameters, so as to trigger the tire pressure sensing module to reply with periodic broadcast response packets containing tire pressure related data in the response slot allocated to it.

[0161] Optionally, the response slot allocation unit 60 is specifically used for:

[0162] Based on broadcast data, determine whether the tire pressure sensing module supports periodic broadcasts with a response;

[0163] After determining that the tire pressure sensor module supports periodic broadcasts with responses, a connection request is sent to the tire pressure sensor module to establish a connection with it.

[0164] Optional, the tire pressure sensor module synchronization unit 70 is specifically used for:

[0165] Send preset parameters to the tire pressure sensor module;

[0166] The tire pressure sensor module is triggered to synchronize processing parameters based on preset parameters.

[0167] Optionally, embodiments of the present invention also provide a vehicle, including: a vehicle body and a tire pressure data transmission system as provided in any of the above embodiments.

[0168] Below, for reference Figure 6The electronic device provided in the embodiments of this application can be described as follows: at least one processor 100, at least one communication interface 200, at least one memory 300 and at least one communication bus 400;

[0169] In this embodiment of the invention, the number of processor 100, communication interface 200, memory 300, and communication bus 400 is at least one, and the processor 100, communication interface 200, and memory 300 communicate with each other through communication bus 400; obviously, Figure 6 The communication connections shown for the processor 100, communication interface 200, memory 300, and communication bus 400 are optional.

[0170] Optionally, the communication interface 200 can be an interface of a communication module, such as the interface of a GSM module; the processor 100 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

[0171] The memory 300 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0172] Specifically, the processor 100 is used to execute the application program in the memory to implement the steps of the above-described tire pressure data transmission method.

[0173] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0174] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0175] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0176] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0177] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0178] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A method for transmitting tire pressure data, characterized in that, The method, applied to a tire pressure sensing module that supports responsive periodic broadcasts, includes: Broadcast data is sent to the tire pressure data receiver of the vehicle, triggering the tire pressure data receiver to enable periodic broadcast with response, and the periodic broadcast with response is configured with preset parameters. In response to a connection request sent by the tire pressure data receiver, a connection is established with the tire pressure data receiver, and response slot configuration information is received; Synchronize with the tire pressure data receiver according to the preset parameters sent by the tire pressure data receiver; In response to the periodic broadcast packets sent by the tire pressure data receiver, a periodic broadcast response packet containing tire pressure-related data is replied in the response slot specified in the response slot configuration information.

2. The method according to claim 1, characterized in that, The step of synchronizing with the tire pressure data receiver based on preset parameters sent by the tire pressure data receiver includes: Based on periodic broadcast synchronous transmission, the synchronization processing parameters are set according to the preset parameters; Disconnect from the tire pressure data receiver; The setting of synchronization processing parameters includes: Based on the collection cycle of the tire pressure related data and the periodic broadcast interval parameter set in the preset parameters, a receiving cycle parameter is set. The receiving cycle parameter represents the number of periodic broadcast events that need to be skipped before receiving the next periodic broadcast packet after successfully receiving one periodic broadcast packet. Set a receiving upper limit duration parameter, which represents the time limit between two consecutive successful receptions of the periodic broadcast packets.

3. The method according to claim 2, characterized in that, Also includes: The timer continues after a periodic broadcast packet is successfully received; If the timing duration reaches the duration limit set based on the upper limit reception duration parameter, then stop counting based on the periodic broadcast interval parameter and directly receive the next periodic broadcast packet; Determine whether the next periodic broadcast packet was successfully received when the timing duration reaches the upper limit of the reception duration parameter; If it is determined that the next periodic broadcast packet has not been received, the broadcast data is retransmitted to connect and synchronize with the tire pressure data receiver.

4. The method according to claim 2, characterized in that, Also includes: Monitor whether the rate of change of the tire pressure-related data reaches a preset threshold; When the rate of change reaches the preset threshold, the receiving period parameter is reduced to respond to the periodic broadcast response packet, so that the tire pressure data receiver can report a warning.

5. A method for transmitting tire pressure data, applied at a tire pressure data receiving end, characterized in that, include: In response to broadcast data sent by the tire pressure sensing module, enable periodic broadcasts with response, and configure the periodic broadcasts with response with preset parameters; Establish a connection with the tire pressure sensing module to allocate a response slot to the tire pressure sensing module; Synchronized with the tire pressure sensing module based on periodic broadcast synchronous transmission; According to the preset parameters, a periodic broadcast packet is sent to the tire pressure sensing module to trigger the tire pressure sensing module to reply with a periodic broadcast response packet containing tire pressure-related data in the response slot assigned to it.

6. The method according to claim 5, characterized in that, Establishing a connection with the tire pressure sensing module includes: Based on the broadcast data, determine whether the tire pressure sensing module supports periodic broadcasts with a response; After determining that the tire pressure sensing module supports the periodic broadcast with response, a connection request is sent to the tire pressure sensing module to establish a connection with the tire pressure sensing module.

7. The method according to claim 5, characterized in that, The synchronization with the tire pressure sensing module includes: Send the preset parameters to the tire pressure sensing module; The tire pressure sensing module is triggered to set synchronization processing parameters based on the preset parameters.

8. A tire pressure data transmission system, characterized in that, A tire pressure sensing module that supports responsive periodic broadcasts, the system comprising: The receiver enable configuration trigger unit is used to send broadcast data to the tire pressure data receiver of the vehicle to trigger the tire pressure data receiver to enable periodic broadcast with response, and configure the periodic broadcast with response with preset parameters. The response slot configuration information receiving unit is used to establish a connection with the tire pressure data receiving end in response to a connection request sent by the tire pressure data receiving end, and to receive response slot configuration information. The receiving end synchronization unit is used to synchronize with the tire pressure data receiving end according to the preset parameters sent by the tire pressure data receiving end; The broadcast packet response unit is used to respond to the periodic broadcast packets sent by the tire pressure data receiving end by replying with a periodic broadcast response packet containing tire pressure related data in the response slot specified in the response slot configuration information.

9. A tire pressure data transmission system, applied to a tire pressure data receiving end, characterized in that, include: The broadcast enable configuration unit, in response to the broadcast data sent by the tire pressure sensing module, enables periodic broadcasts with response and configures the periodic broadcasts with response with preset parameters. A response slot allocation unit is used to establish a connection with the tire pressure sensing module and allocate response slots to the tire pressure sensing module. The tire pressure sensing module synchronization unit is used to synchronize with the tire pressure sensing module through periodic broadcast synchronization transmission; The tire pressure sensing module response triggering unit is used to send periodic broadcast packets to the tire pressure sensing module according to the preset parameters, so as to trigger the tire pressure sensing module to reply with periodic broadcast response packets containing tire pressure related data in the response slot allocated to it.

10. A vehicle, characterized in that, include: The vehicle body and the tire pressure data transmission system as described in claims 8 and 9.

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