CN113103830B - Tire pressure monitoring data transmission method and device, repeater unit and vehicle - Google Patents
Tire pressure monitoring data transmission method and device, repeater unit and vehicle Download PDFInfo
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- CN113103830B CN113103830B CN202010024476.4A CN202010024476A CN113103830B CN 113103830 B CN113103830 B CN 113103830B CN 202010024476 A CN202010024476 A CN 202010024476A CN 113103830 B CN113103830 B CN 113103830B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
- B60C23/0438—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender comprising signal transmission means, e.g. for a bidirectional communication with a corresponding wheel mounted receiver
- B60C23/0442—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender comprising signal transmission means, e.g. for a bidirectional communication with a corresponding wheel mounted receiver the transmitted signal comprises further information, e.g. instruction codes, sensor characteristics or identification data
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Abstract
The invention discloses a tire pressure monitoring data transmission method, a device, a repeater unit and a vehicle, wherein after receiving tire pressure monitoring data transmitted by a tire pressure monitoring unit through a first wireless frequency band, when a second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band, and does not receive a first confirmation instruction transmitted by a central processing unit or a repeater unit in a first repeater set within a first preset time, when the second wireless frequency band is in the idle state, the first repeater unit continues to transmit the tire pressure monitoring data through the second wireless frequency band, so that the tire pressure monitoring data can be ensured to be smoothly transmitted to the central processing unit, the data loss can be avoided, in addition, the repeated data transmission can be avoided, and the co-frequency interference of the data can be avoided, the data transmission of the tire pressure data monitoring system is more effectively ensured to be smooth.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a tire pressure monitoring data transmission method, a tire pressure monitoring data transmission device, a repeater unit and a vehicle.
Background
With the continuous development of vehicle technology, vehicles occupy an increasingly important position in daily life. The driving safety of vehicles has also become an important research field. The driving safety of a vehicle is seriously affected by the abnormality of the tires of the vehicle during the driving of the vehicle. Therefore, a tire pressure data monitoring system is introduced in a vehicle. In particular, heavy vehicles (trucks or passenger cars) have not been able to meet the requirements of individual tire monitoring modules and a single receiving control unit due to their large number of tires and their long body. The tire pressure monitoring data monitoring system of heavy vehicles must add a plurality of repeater units for data transmission. However, due to the increase of the number of tires and the number of repeater units, the transmission and transmission of data are easily interfered, and the problem of repeated data transmission is easily caused, which has a great influence on the smooth transmission of the tire pressure monitoring data.
Disclosure of Invention
The embodiment of the invention provides a method and a device for transmitting tire pressure monitoring data, a repeater unit and a vehicle, which aim to solve the problem that the tire pressure monitoring data is easy to repeatedly send in the transmission process and the smooth transmission of the tire pressure monitoring data is influenced.
In a first aspect of an embodiment of the present invention, a tire pressure monitoring data transmission method is provided, including:
the first repeater unit receives tire pressure monitoring data sent by the tire pressure monitoring unit through a first wireless frequency band;
when a second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band;
if the first repeater unit does not receive the central processing unit or the first confirmation instruction sent by the repeater units in the first repeater set within the first preset time, when the second wireless frequency band is in an idle state, the first repeater unit continues to send the tire pressure monitoring data through the second wireless frequency band, the first preset time is positively correlated with the distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set formed by repeater units closer to the central processing unit of the vehicle than the first repeater unit.
In a second aspect of the embodiments of the present invention, a method for transmitting tire pressure monitoring data is provided, including:
the first repeater unit receives tire pressure monitoring data sent by the second repeater unit through a second wireless frequency band;
if the first repeater unit is closer to the central processing unit of the vehicle than the second repeater unit, the first repeater unit judges whether a first confirmation instruction sent by the central processing unit or a repeater unit in a first repeater set is received within a first preset time, the first preset time is positively correlated with the distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set formed by repeater units closer to the central processing unit of the vehicle than the first repeater unit;
if a first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set is not received within a first preset time, the first repeater unit sends a second confirmation instruction, and the second confirmation instruction instructs the repeater units which are farther away from the central processing unit of the vehicle than the first repeater unit to stop processing the tire pressure monitoring data;
and when the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band.
In a third aspect of the embodiments of the present invention, a tire pressure monitoring data transmission device is provided, including:
the first repeater unit is used for receiving the tire pressure monitoring data sent by the tire pressure monitoring unit through a first wireless frequency band through the tire pressure monitoring data receiving module;
the first relay unit adopts the tire pressure monitoring data transmitting module to transmit the tire pressure monitoring data through the second wireless frequency band when the second wireless frequency band is in an idle state;
a first repeat transmission module, if the first repeater unit does not receive the central processing unit or the first confirmation instruction sent by the repeater unit in the first repeater set within a first preset time, when the second wireless frequency band is in an idle state, the first repeater unit adopts the repeat transmission module to continue to transmit the tire pressure monitoring data through the second wireless frequency band, the first preset time and the distance between the first repeater unit and the central processing unit are positively correlated, and the first repeater set is a repeater set composed of repeater units closer to the central processing unit of the vehicle than the first repeater unit.
In a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided, in which a computer program is stored, and the computer program, when executed by a processor, implements the above tire pressure monitoring data transmission method.
In a fifth aspect of the embodiments of the present invention, a repeater unit is provided, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the tire pressure monitoring data transmission method when executing the computer program.
In a sixth aspect of the present invention, a tire pressure data monitoring system is provided, which includes a tire pressure monitoring unit, a repeater unit and a central processing unit, wherein the repeater unit is configured to execute the tire pressure monitoring data transmission method.
In a seventh aspect of the embodiments of the present invention, a vehicle is provided, which includes the above-mentioned repeater unit, or includes the above-mentioned tire pressure data monitoring system.
In the tire pressure monitoring data transmission method, the tire pressure monitoring data transmission device, the repeater unit and the vehicle, after receiving the tire pressure monitoring data transmitted by the tire pressure monitoring unit through the first wireless frequency band, when the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band, and does not receive the first confirmation instruction transmitted by the central processing unit or the repeater unit in the first repeater set within the first preset time, then when the second wireless frequency band is in the idle state, the first repeater unit continues to transmit the tire pressure monitoring data through the second wireless frequency band, so that the tire pressure monitoring data can be smoothly transmitted to the central processing unit, the data loss is avoided, and the tire pressure monitoring data is continuously transmitted after waiting for the first confirmation instruction transmitted by the central processing unit or the repeater unit in the first repeater set within the first preset time The tire pressure monitoring data avoids repeated data transmission, avoids the same frequency interference of the data, and more effectively ensures the smoothness of the data transmission of the tire pressure data monitoring system.
In the above method, apparatus, repeater unit and vehicle for transmitting tire pressure monitoring data, after the first repeater unit receives the tire pressure monitoring data transmitted by the second repeater unit through the second wireless frequency band, if the first repeater unit is closer to the central processing unit of the vehicle than the second repeater unit, the first repeater unit judges whether a first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set is received within a first preset time, if the first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set is not received within the first preset time, the first repeater unit sends a second confirmation instruction, and when the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band. After the first repeater unit determines that the first repeater unit is closer to the central processing unit than the second repeater unit, if the tire pressure monitoring data is not received by the repeater unit closer to the central processing unit than the first repeater unit within a first preset time, the first repeater unit transmits the tire pressure monitoring data. The repeated sending of the data is avoided through judgment and waiting, so that the invalid sending of the data can be reduced, the interference of the repeated sending on other data transmission is also avoided, and the smooth transmission of the tire pressure monitoring data is also ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of a tire pressure data monitoring system in an embodiment of the present invention;
fig. 2 is a flow chart of a tire pressure monitoring data transmission method according to an embodiment of the present invention;
fig. 3 is another flowchart of a tire pressure monitoring data transmission method according to an embodiment of the present invention;
fig. 4 is another flowchart of a tire pressure monitoring data transmission method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a tire pressure monitoring data transmission device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The tire pressure monitoring data transmission method provided by the embodiment of the invention can be applied to a repeater unit in a tire pressure data monitoring system. The tire pressure data monitoring system may include a tire pressure monitoring module, a repeater module, and a central processor. The tire pressure monitoring module comprises at least one tire pressure monitoring unit, the repeater module comprises at least one repeater unit, and the tire pressure monitoring module is used for monitoring tires in a vehicle, obtaining tire pressure monitoring data and sending the tire pressure monitoring data to the repeater unit. The repeater unit transmits the received tire pressure monitoring data to the central processing unit. Further, the tire pressure data monitoring system further comprises an instrument display module, and the instrument display module is used for displaying the tire pressure monitoring data received by the central processing unit.
In one embodiment, as shown in fig. 1, the tire air pressure data monitoring system includes a tire air pressure monitoring module, a repeater module, and a central processor. The tire pressure monitoring module comprises 2n tire pressure monitoring units, and the repeater module comprises n repeater units. Specifically, one repeater unit is mapped every two tire pressure monitoring units. As shown in fig. 1, the tire pressure monitoring unit 01 and the tire pressure monitoring unit 02 map the repeater unit 01, the tire pressure monitoring unit 03 and the tire pressure monitoring unit 04 map the repeater unit 02, the tire pressure monitoring unit 05 and the tire pressure monitoring unit 06 map the repeater unit 03, and the tire pressure monitoring unit 2n-1 and the tire pressure monitoring unit 2n map the repeater unit n. In this embodiment, the tire pressure monitoring unit transmits the tire pressure monitoring data through the first wireless band, the repeater unit transmits the tire pressure monitoring data through the second wireless band after receiving the tire pressure monitoring data, and finally, the central processor receives the tire pressure monitoring data. The tire pressure monitoring data may be further displayed in a meter display module.
In one embodiment, as shown in fig. 2, a tire pressure monitoring data transmission method is provided, which is described by taking the first repeater unit as an example, and includes the following steps:
s201: the first repeater unit receives tire pressure monitoring data transmitted by the tire pressure monitoring unit through a first wireless frequency band.
The tire pressure detection unit monitors tires of a vehicle and acquires tire pressure monitoring data of the tires. Namely, the tire pressure monitoring data is the monitoring data of the tire pressure monitoring unit to the tire in the vehicle. For example, the tire pressure monitoring data may include air pressure, temperature, etc. monitoring data of the tire. The tire pressure monitoring unit sends the tire pressure monitoring data through the first wireless frequency band after acquiring the tire pressure monitoring data. Optionally, the first radio frequency band may be 433.92 MHZ.
After the tire pressure monitoring unit transmits the tire pressure monitoring data through the first wireless frequency band, one or two or more repeater units in the repeater module receive the tire pressure monitoring data. Alternatively, the first repeater unit may be any one of the repeater units that receives the tire pressure monitoring data in the repeater module. Further, the first repeater unit may be a specific repeater unit of the repeater module that received the tire pressure monitoring data. For example, a mapping relationship is previously set for the tire pressure monitoring units in the tire pressure monitoring module and the repeater units in the repeater module, and one repeater unit may be mapped for a plurality of tire pressure monitoring units in the tire pressure monitoring module or one repeater unit may be mapped for one tire pressure monitoring unit in the tire pressure monitoring module. Thus, the first repeater unit is the repeater unit mapped by the tire pressure monitoring unit transmitting the tire pressure monitoring data through the first wireless frequency band.
It is understood that one tire pressure monitoring unit may map a plurality of relay units and set priorities to the plurality of relay units mapped by the tire pressure monitoring unit, in which case, the first relay unit is the relay unit that receives the tire pressure monitoring data, and the relay unit mapped by the tire pressure monitoring unit has the highest priority. Alternatively, the priority may be set according to the distance between the central processor and each repeater unit, and the shorter the distance, the higher the corresponding priority.
S202: and when the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band.
The second radio frequency band is a radio frequency band of a specific frequency. Optionally, the second radio frequency band is 315 MHZ. In one embodiment, the first radio band is at a higher frequency than the second radio band. The second wireless frequency band comprises a non-idle state and an idle state, when the second wireless frequency band is in the idle state, the first repeater unit sends the tire pressure monitoring data through the second wireless frequency band so as to transmit the tire pressure monitoring data, and finally the central processing unit receives the tire pressure monitoring data.
S203: if the first repeater unit does not receive the central processing unit or the first confirmation instruction sent by the repeater units in the first repeater set within the first preset time, when the second wireless frequency band is in an idle state, the first repeater unit continues to send the tire pressure monitoring data through the second wireless frequency band, the first preset time is positively correlated with the distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set formed by repeater units closer to the central processing unit of the vehicle than the first repeater unit.
The first preset time is a preset time value, and the first preset time is in positive correlation with the distance between the first repeater unit and the central processing unit, namely the closer the first repeater unit is to the central processing unit, the smaller the first preset time is, the farther the first repeater unit is from the central processing unit, and the larger the first preset time is. Taking a tire pressure data monitoring system installed on a truck as an example, the values of the first preset time of the corresponding repeater units can be set to be 1-3ms, 3-4ms, 4-7ms, 7-10ms and the like in sequence from near to far from the central processing unit. For example, in fig. 1, the first preset time of the repeater unit 01 is 1 to 3ms, the first preset time of the repeater unit 02 is 3 to 4ms, and the first preset time of the repeater unit 03 is 4 to 7 ms.
The first set of repeaters is a set of repeater units that are closer to the central processor of the vehicle than the first repeater unit. Illustratively, if the first repeater unit is repeater unit 03 in fig. 1, the first set of repeaters includes repeater unit 01 and repeater unit 02.
The first confirmation command instructs a repeater unit that is farther from the central processor of the vehicle than the repeater unit that issued the first confirmation command to discontinue processing the tire pressure monitoring data. Alternatively, the first confirmation instruction indicates that the central processor has received the tire pressure monitoring data (the central processor issues the confirmation instruction), and all of the repeater units discontinue processing the tire pressure monitoring data.
If the first repeater unit does not receive the central processing unit or the first acknowledgement command sent by the repeater units in the first repeater set within the first preset time, it indicates that no repeater unit closer than the first repeater unit receives the tire pressure monitoring data within the first preset time, and the central processing unit does not receive the tire pressure monitoring data. For example, in fig. 1, the first relay unit 03 does not receive the first acknowledgement command transmitted by any one of the central processor, the relay unit 01 and the relay unit 02 within the first preset time, i.e., the central processor, the relay unit 01 and the relay unit 02 do not receive the tire pressure monitoring data within the first preset time. Therefore, when the second wireless band is in the idle state, the first repeater unit continues to transmit the tire pressure monitoring data through the second wireless band, so that the central processor can finally receive the tire pressure monitoring data.
In this embodiment, the first repeater unit transmits the tire pressure monitoring data via the second wireless band when the second wireless band is in an idle state after receiving the tire pressure monitoring data transmitted by the tire pressure monitoring unit via the first wireless band, and the first repeater unit continues to transmit the tire pressure monitoring data via the second wireless band when the first wireless band is in the idle state, which can ensure that the tire pressure monitoring data can be transmitted to the central processing unit smoothly, avoid data loss, and continue to transmit the tire pressure monitoring data after waiting for the first acknowledgement command transmitted by the central processing unit or the repeater unit in the first repeater set when the second wireless band is in the idle state, repeated data transmission is avoided, the same frequency interference of data is avoided, and the smoothness of data transmission of the tire pressure data monitoring system is effectively ensured.
In one embodiment, after the first repeater unit transmits the tire pressure monitoring data through the second wireless band while the second wireless band is in the idle state, the tire pressure monitoring data transmission method further includes:
if the first repeater unit receives a first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set within a first preset time, the first repeater unit does not process the tire pressure monitoring data any more.
In this embodiment, if the first relay unit receives the first acknowledgement command sent by the central processing unit or the relay units in the first relay set within the first preset time, it indicates that the central processing unit or the relay units in the first relay set have received the tire pressure monitoring data within the first preset time. If the central processor receives the tire pressure monitoring data, the transmission of the tire pressure monitoring data is completed, and the transmission of the tire pressure monitoring data can be stopped to avoid repeated transmission. If the repeater unit in the first repeater set receives the tire pressure monitoring data, the repeater unit in the first repeater set is a repeater unit closer to the central processing unit than the first repeater unit, so that the repeater unit in the first repeater set sends a first confirmation instruction at this time to instruct the first repeater unit to stop processing the tire pressure monitoring data, and the repeater unit sending the first confirmation instruction continues sending the tire pressure monitoring data, thereby ensuring that the central processing unit can smoothly receive the tire pressure monitoring data and improving the efficiency of data transmission.
In one embodiment, if the first acknowledgement command is sent for a relay unit in the first set of relays, the method for transmitting tire pressure monitoring data further includes:
and when the second wireless frequency band is in an idle state, the repeater unit which sends the first confirmation instruction sends the tire pressure monitoring data through the second wireless frequency band. That is, the repeater unit (the repeater unit that transmitted the first confirmation instruction) takes over the first repeater unit to continue transmitting the tire pressure monitoring data until the central processor receives the tire pressure monitoring data.
In one embodiment, as shown in fig. 3, a tire pressure monitoring data transmission method is provided, which is exemplified by the application of the method to a first repeater unit, and includes the following steps:
s301: the first repeater unit receives the tire pressure monitoring data transmitted by the second repeater unit through the second wireless frequency band.
Wherein the first repeater unit is any one of a plurality of repeater units in the tire pressure data monitoring system. And the second repeater unit is any one of the plurality of repeater units in the tire pressure data monitoring system that is different from the first repeater unit. That is, in this embodiment, the first repeater unit and the second repeater unit are used only to distinguish different repeater units.
In this step, the first repeater unit receives the tire pressure monitoring data transmitted by the second repeater unit through the second wireless band. And the tire pressure monitoring data is the monitoring data of the tire pressure monitoring module to the tire in the vehicle. For example, the tire pressure monitoring data may include air pressure, temperature, etc. monitoring data of the tire. The tire pressure monitoring data in the second relay unit may be obtained from the tire pressure monitoring module, or may be sent to the second relay unit by another relay unit.
S302: if the first repeater unit is closer to the central processing unit of the vehicle than the second repeater unit, the first repeater unit judges whether a first confirmation instruction sent by the central processing unit or a repeater unit in a first repeater set is received within a first preset time, the first preset time and the distance between the first repeater unit and the central processing unit are positively correlated, and the first repeater set is a repeater set formed by repeater units closer to the central processing unit of the vehicle than the first repeater unit.
The first preset time is a preset time value, and the first preset time is in positive correlation with the distance between the first repeater unit and the central processing unit, namely the closer the first repeater unit is to the central processing unit, the smaller the first preset time is, the farther the first repeater unit is from the central processing unit, and the larger the first preset time is. Taking a tire pressure data monitoring system installed on a truck as an example, the values of the first preset time of the corresponding repeater units can be set to be 1-3ms, 3-4ms, 4-7ms, 7-10ms and the like in sequence from near to far from the central processing unit. For example, in fig. 1, the first preset time of the repeater unit 01 is 1-3ms, the first preset time of the repeater unit 02 is 3-4ms, and the first preset time of the repeater unit 03 is 4-7 ms.
The first set of repeaters is a set of repeater units that are closer to the central processor of the vehicle than the first repeater unit. Illustratively, if the first repeater unit is repeater unit 03 in fig. 1, the first set of repeaters includes repeater unit 01 and repeater unit 02.
The first confirmation command instructs a repeater unit that is farther from the central processor of the vehicle than the repeater unit that issued the first confirmation command to discontinue processing the tire pressure monitoring data. Alternatively, the first confirmation instruction indicates that the central processor has received the tire pressure monitoring data (the central processor issues the confirmation instruction), and all of the repeater units discontinue processing the tire pressure monitoring data.
In this step, the first repeater unit first determines whether itself is closer to the central processing unit of the vehicle than the second repeater unit, and if the first repeater unit is closer to the central processing unit of the vehicle than the second repeater unit, it further determines whether the first acknowledgement command sent by the central processing unit or the repeater units in the first repeater set is received within a first preset time. Illustratively, if the first repeater unit is the repeater unit 03 of fig. 1 and the second repeater unit is the repeater unit 04, the first repeater unit (repeater unit 03) is closer to the central processor than the second repeater unit (repeater unit 04). At this time, the first repeater unit determines whether to accept the first acknowledgement command sent by the central processing unit or the repeater units (repeater unit 01 or repeater unit 02) in the first repeater set within a first preset time.
S303: if a first confirmation instruction sent by a central processing unit or a repeater unit in a first repeater set is not received within a first preset time, the first repeater unit sends a second confirmation instruction, and the second confirmation instruction instructs repeater units farther away from the central processing unit of the vehicle than the first repeater unit to stop processing the tire pressure monitoring data.
If the first repeater unit does not receive the central processing unit or the first acknowledgement command sent by the repeater units in the first repeater set within the first preset time, it indicates that no repeater unit closer than the first repeater unit receives the tire pressure monitoring data within the first preset time, and the central processing unit does not receive the tire pressure monitoring data. For example, in fig. 1, the first repeater unit 03 does not receive the first acknowledgement command transmitted by any one of the central processor, the repeater unit 01 and the repeater unit 02 within the first preset time, that is, the central processor, the repeater unit 01 and the repeater unit 02 do not receive the tire pressure monitoring data within the first preset time. At this time, the first relay unit will transmit the tire pressure monitoring data via the second wireless band, and therefore, before that, the first relay unit issues a second confirmation instruction instructing the relay units farther from the central processor of the vehicle than the first relay unit to discontinue processing of the tire pressure monitoring data, avoiding a situation in which repeated transmission of data occurs.
S304: and when the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band.
When the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band, so that the central processing unit can finally receive the tire pressure monitoring data.
In this embodiment, after receiving the tire pressure monitoring data transmitted by the second relay unit through the second wireless frequency band, if the first relay unit is closer to the central processing unit of the vehicle than the second relay unit, the first relay unit determines whether the first acknowledgement command transmitted by the central processing unit or the relay units in the first relay set is received within a first preset time, if the first acknowledgement command transmitted by the central processing unit or the relay units in the first relay set is not received within the first preset time, the first relay unit transmits the second acknowledgement command, and when the second wireless frequency band is in an idle state, the first relay unit transmits the tire pressure monitoring data through the second wireless frequency band. After the first repeater unit determines that the first repeater unit is closer to the central processing unit than the second repeater unit, if the tire pressure monitoring data is not received by the repeater unit closer to the central processing unit than the first repeater unit within a first preset time, the first repeater unit transmits the tire pressure monitoring data. By avoiding repeated sending of data through judgment and waiting, invalid sending of data can be reduced, interference of repeated sending on other data transmission is avoided, and smooth transmission of tire pressure monitoring data is ensured.
In one embodiment, as shown in fig. 4, after the first relay unit transmits the tire air pressure monitoring data through the second radio band, the tire air pressure monitoring data transmission method further includes:
s401: if the first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set is not received within the first preset time, the first repeater unit sends a second confirmation instruction.
S402: when the second wireless frequency band is in an idle state, the first repeater unit continues to transmit the tire pressure monitoring data through the second wireless frequency band.
In this embodiment, the first repeater unit may perform the second waiting (waiting for the first preset time) and determination after transmitting the tire air pressure monitoring data through the second wireless band. If the first confirmation instruction sent by the central processing unit or the repeater unit in the first repeater set is not received after the second waiting, it indicates that the repeater unit closer to the central processing unit than the first repeater unit does not receive the tire pressure monitoring data (sent by the first repeater unit), the first repeater unit sends the tire pressure monitoring data for the second time, that is, when the second wireless frequency band is in an idle state, the first repeater unit continues to send the tire pressure monitoring data through the second wireless frequency band, so as to ensure that the central processing unit can successfully receive the tire pressure monitoring data finally.
In one embodiment, after transmitting the tire pressure monitoring data for the second time, the first relay unit continues to perform step S401 until receiving the first confirmation instruction transmitted by the central processing unit or the relay units in the first relay set within the first preset time.
In one embodiment, if a first acknowledgement command sent by the central processing unit or the relay unit in the first set of relays is received within a first preset time, the first relay unit does not process the tire pressure monitoring data any more so as to avoid repeated sending of data.
In one embodiment, after the first relay unit receives the tire air pressure monitoring data transmitted by the second relay unit through the second wireless band, the tire air pressure monitoring data transmission method further includes:
the first relay unit does not process the tire pressure monitoring data if the second relay unit is closer to a central processor of a vehicle than the first relay unit.
In this embodiment, the first relay unit does not process the tire air pressure monitoring data if the second relay unit is closer to the central processor of the vehicle than the first relay unit. For example, if the first repeater unit is the repeater unit 03 of fig. 1 and the second repeater unit is the repeater unit 02 of fig. 1, the first repeater unit does not process the tire air pressure monitoring data to avoid the repeated transmission of the tire air pressure monitoring data.
In one embodiment, the communication between the repeater unit and the central processor CAN also take place via a CAN bus or a LIN bus. Preferably, the repeater unit closest to the central processor communicates with the central processor via a CAN bus or a LIN bus. The two-center machine unit 01 in fig. 1 communicates with a central processor, for example, via a CAN bus or a LIN bus.
In one embodiment, taking the tire air pressure data monitoring system of fig. 1 as an example, a transmission process of the tire air pressure monitoring data including a first phase and a second phase is fully described in conjunction with the method for transmitting the tire air pressure monitoring data in the above-described embodiments.
The first stage is as follows:
the tire pressure monitoring unit transmits the tire pressure monitoring data, and the corresponding repeater unit receives and transmits the tire pressure monitoring data. Taking the tire pressure monitoring unit 05 and the repeater unit 03 in fig. 1 as an example, in this case, the repeater unit 03 is the first repeater unit, and the repeater unit 03 performs the steps S201 to S203 in the above embodiment.
Specifically, after receiving the tire pressure monitoring data transmitted by the tire pressure monitoring unit 05 through the first wireless frequency band, the repeater unit 03 transmits the tire pressure monitoring data through the second wireless frequency band when the second wireless frequency band is in an idle state.
Then, the repeater unit 03 waits, and if the first acknowledgement command sent by the central processing unit, the repeater unit 01, or the repeater unit 02 is not received within the first preset time, when the second wireless frequency band is in the idle state, the repeater unit 03 continues to send the tire pressure monitoring data through the second wireless frequency band. Then, the repeater unit 03 will continue to wait to determine whether the first acknowledgement command sent by the cpu, the repeater unit 01, or the repeater unit 02 is received within the first preset time, until the first acknowledgement command sent by the cpu, the repeater unit 01, or the repeater unit 02 is received within the first preset time.
If the first acknowledgement command sent by any one of the central processor, the repeater unit 01 or the repeater unit 02 is received within the first preset time, the repeater unit 03 is not processing the tire pressure monitoring data.
And then, if the central processor sends the first confirmation instruction, the transmission process of the tire pressure monitoring data is finished. Further, the tire pressure monitoring data may then be displayed via a gauge display module.
If the first acknowledgement command is sent, the repeater unit 01 or the repeater unit 02 is sent. It is assumed that the repeater unit 02 transmits the first confirmation instruction. In this case, the repeater unit 02 is the first repeater unit in steps S301 to S304 in the above embodiment.
And a second stage:
the repeater unit 02 receives the tire pressure monitoring data transmitted by the repeater unit 03 through the second wireless band.
At this time, the repeater unit 02 is closer to the central processing unit of the vehicle than the repeater unit 03, and the repeater unit 02 determines whether the first confirmation instruction transmitted from the central processing unit or the repeater unit 01 is received within the first preset time.
If no confirmation instruction sent by the central processor or the repeater unit 01 is received within a first preset time, the first repeater unit sends a second confirmation instruction instructing repeater units farther from the central processor of the vehicle than the first repeater unit to discontinue processing the tire pressure monitoring data, that is, instructing the repeater unit 03 to discontinue processing the tire pressure monitoring data.
When the second radio band is in the idle state, the relay unit 02 transmits the tire air pressure monitoring data through the second radio band, and then performs the steps S401 to S402 in the above embodiment until the relay unit 01 or the central processor receives the tire air pressure monitoring data.
Further, if the relay unit 01 receives the air pressure monitoring data, the relay unit 01 performs, as a new first relay unit, steps S301 to S304 and steps S401 to S402 in the above embodiment until the central processor receives the air pressure monitoring data.
If the central processing unit receives the tire pressure monitoring data, the transmission process of the tire pressure monitoring data is finished.
According to the embodiment of the invention, through the transmission process of the tire pressure monitoring data, the repeated and invalid transmission of the data is avoided in the transmission process of the tire pressure monitoring data, the same frequency interference among the data is reduced, and the smooth transmission of the tire pressure monitoring data is ensured.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In one embodiment, a tire pressure monitoring data transmission device is provided, wherein the tire pressure monitoring data transmission device corresponds to the tire pressure monitoring data transmission method in the above embodiments one to one. As shown in fig. 5, the tire pressure monitoring data transmitting device includes a first tire pressure monitoring data receiving module 501, a first tire pressure monitoring data transmitting module 502, and a first retransmission module 503. The detailed description of each functional module is as follows:
a first tire pressure monitoring data receiving module 501, through which the first repeater unit is configured to receive tire pressure monitoring data sent by the tire pressure monitoring unit through a first wireless frequency band;
a first tire pressure monitoring data transmitting module 502, wherein when a second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band by using the tire pressure monitoring data transmitting module;
a first repeated sending module 503, if the first repeater unit does not receive the central processing unit or the first confirmation instruction sent by the repeater units in the first repeater set within the first preset time, when the second wireless frequency band is in an idle state, the first repeater unit adopts the repeated sending module to continue sending the tire pressure monitoring data through the second wireless frequency band, the first preset time and the distance between the first repeater unit and the central processing unit are in positive correlation, and the first repeater set is a repeater set composed of repeater units closer to the central processing unit of the vehicle than the first repeater unit.
Preferably, the tire pressure monitoring data transmission device is further configured to, when the first relay unit receives a first confirmation instruction sent by a central processing unit or a relay unit in a first relay set within a first preset time, the first relay unit does not process the tire pressure monitoring data any more.
In one embodiment, a tire pressure monitoring data transmission device is provided, wherein the tire pressure monitoring data transmission device corresponds to the tire pressure monitoring data transmission method in the above embodiments one to one. The tire pressure monitoring data transmission device comprises a second tire pressure monitoring data receiving module, a judging module and a second tire pressure monitoring data sending module. The detailed description of each functional module is as follows:
the first repeater unit is used for receiving the tire pressure monitoring data transmitted by the second repeater unit through a second wireless frequency band through the second tire pressure monitoring data receiving module;
a determining module, wherein if the first repeater unit is closer to the central processing unit of the vehicle than the second repeater unit, the first repeater unit determines whether a first confirmation instruction sent by the central processing unit or a repeater unit in a first repeater set is received within a first preset time by the determining module, the first preset time is positively correlated with a distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set composed of repeater units closer to the central processing unit of the vehicle than the first repeater unit; if a first confirmation instruction sent by a central processing unit or a repeater unit in a first repeater set is not received within a first preset time, the first repeater unit sends a second confirmation instruction, and the second confirmation instruction instructs repeater units farther away from the central processing unit of the vehicle than the first repeater unit to stop processing the tire pressure monitoring data;
and the first repeater unit adopts the second tire pressure monitoring data transmitting module to transmit the tire pressure monitoring data through the second wireless frequency band when the second wireless frequency band is in an idle state.
Preferably, the tire pressure monitoring data transmission device further comprises a confirmation instruction transmitting module and a second repeat transmitting module.
A confirmation instruction sending module, wherein if a first confirmation instruction sent by the central processing unit or the relay units in the first relay set is not received within a first preset time, the first relay unit sends a second confirmation instruction through the confirmation instruction sending module, and the second confirmation instruction indicates that the relay units farther away from the central processing unit of the vehicle than the first relay unit discontinue processing the tire pressure monitoring data;
and the second repeated transmitting module is used for continuously adopting the second repeated transmitting module to transmit the tire pressure monitoring data through the second wireless frequency band by the first repeater unit when the second wireless frequency band is in an idle state.
For specific limitations of the tire pressure monitoring data transmission device, reference may be made to the above limitations of the tire pressure monitoring data transmission method, which are not described herein again. The modules in the tire pressure monitoring data transmission device may be implemented wholly or partially by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, there is provided a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the tire pressure monitoring data transmission method according to any of the above-described embodiments.
In one embodiment, the present invention provides a repeater unit including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the tire pressure monitoring data transmission method according to any of the above embodiments when executing the computer program.
In one embodiment, the present invention provides a tire pressure data monitoring system comprising a tire pressure monitoring unit, a repeater unit and a central processor, the repeater unit being configured to perform the tire pressure monitoring data transmission method according to any of the above embodiments.
In one embodiment, the present invention provides a vehicle comprising the repeater unit according to any one of the above embodiments, or the vehicle comprising the tire pressure data monitoring system according to any one of the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (9)
1. A tire pressure monitoring data transmission method, comprising:
the first repeater unit receives tire pressure monitoring data sent by the tire pressure monitoring unit through a first wireless frequency band;
when a second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band;
if the first repeater unit does not receive a first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set within a first preset time, when a second wireless frequency band is in an idle state, the first repeater unit continues to send the tire pressure monitoring data through the second wireless frequency band, the first preset time is positively correlated with the distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set formed by repeater units closer to the central processing unit of the vehicle than the first repeater unit;
if the first repeater unit receives a first confirmation instruction sent by a central processing unit or a repeater unit in a first repeater set within a first preset time, the first repeater unit does not process the tire pressure monitoring data any more.
2. A tire pressure monitoring data transmission method, comprising:
the first repeater unit receives tire pressure monitoring data sent by the second repeater unit through a second wireless frequency band;
if the first repeater unit is closer to the central processing unit of the vehicle than the second repeater unit, the first repeater unit judges whether a first confirmation instruction sent by the central processing unit or a repeater unit in a first repeater set is received within a first preset time, the first preset time is positively correlated with the distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set formed by repeater units closer to the central processing unit of the vehicle than the first repeater unit;
if a first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set is not received within a first preset time, the first repeater unit sends a second confirmation instruction, and the second confirmation instruction instructs the repeater units which are farther away from the central processing unit of the vehicle than the first repeater unit to stop processing the tire pressure monitoring data;
and when the second wireless frequency band is in an idle state, the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band.
3. The tire pressure monitoring data transmission method according to claim 2, wherein after the first repeater unit transmits the tire pressure monitoring data through the second wireless frequency band, the tire pressure monitoring data transmission method further includes:
if a first confirmation instruction sent by a central processing unit or a repeater unit in a first repeater set is not received within a first preset time, the first repeater unit sends a second confirmation instruction;
and when the second wireless frequency band is in an idle state, the first repeater unit continues to transmit the tire pressure monitoring data through the second wireless frequency band.
4. The tire pressure monitoring data transmission method according to claim 2, wherein after the first repeater unit receives the tire pressure monitoring data transmitted by the second repeater unit through the second wireless band, the tire pressure monitoring data transmission method further includes:
the first relay unit does not process the tire pressure monitoring data if the second relay unit is closer to a central processor of a vehicle than the first relay unit.
5. A tire pressure monitoring data transmission device, comprising:
the first repeater unit is used for receiving the tire pressure monitoring data transmitted by the tire pressure monitoring unit through a first wireless frequency band through the tire pressure monitoring data receiving module;
the first relay unit adopts the tire pressure monitoring data transmitting module to transmit the tire pressure monitoring data through the second wireless frequency band when the second wireless frequency band is in an idle state;
a first repeat transmission module, if the first repeater unit does not receive a first acknowledgement command sent by the central processing unit or a repeater unit in a first repeater set within a first preset time, when a second wireless frequency band is in an idle state, the first repeater unit continues to send the tire pressure monitoring data through the second wireless frequency band by using the repeat transmission module, the first preset time is in positive correlation with a distance between the first repeater unit and the central processing unit, and the first repeater set is a repeater set composed of repeater units closer to the central processing unit of the vehicle than the first repeater unit;
if the first repeater unit receives a first confirmation instruction sent by the central processing unit or the repeater units in the first repeater set within a first preset time, the first repeater unit does not process the tire pressure monitoring data any more.
6. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the tire pressure monitoring data transmission method according to any one of claims 1 to 4.
7. A repeater unit comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the tire pressure monitoring data transmission method according to any one of claims 1 to 4 when executing the computer program.
8. A tire pressure data monitoring system comprising a tire pressure monitoring unit, a repeater unit and a central processor, the repeater unit being configured to perform the tire pressure monitoring data transmission method according to any one of claims 1 to 4.
9. A vehicle comprising a repeater unit according to claim 7 or comprising a tire pressure data monitoring system according to claim 8.
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| CN202010024476.4A CN113103830B (en) | 2020-01-10 | 2020-01-10 | Tire pressure monitoring data transmission method and device, repeater unit and vehicle |
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