A communication device, method, system and storage medium based on different buses

Abstract

The present invention provides a communication device, method, system and storage medium based on different buses, wherein the device comprises: a first bus controller connected to the first bus and used to communicate with the first bus in a first communication mode; a first processing component connected to the first bus controller and used to communicate with the first bus controller in a second communication mode; a second processing component connected to the first processing component and used to communicate with the first processing component in a third communication mode; a second data conversion device connected to the second processing component and the second bus and used to convert the first data from the second processing component into the second data and send the second data to the second bus; or, convert the third data from the second bus into the fourth data and send the fourth data to the second processing component. According to the present invention, the efficiency and accuracy of data transmission and reception are improved, the stability and anti-interference ability of data transmission are enhanced, and the reliability of automobile bus communication is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of Internet of Things, and more specifically to data transmission based on the Internet of Things. Background Art

[0002] With the increasing development of the automotive industry, there are more and more electronic components in cars. In order to achieve efficient control of electronic components by automotive computers, electronic components are connected to various levels of buses. The two most common automotive buses are LIN (Local Interconnect Network) bus and CAN (Controller Area Network) bus. CAN bus and LIN bus have different characteristics and advantages, so they are often used in automotive control systems at the same time. It is particularly important to achieve effective communication between the two. At present, communication adapters can be added to automotive systems that use these two buses. However, when using communication adapters to achieve communication between the two buses, the speed and accuracy of data transmission and reception are not high, the stability is poor, and the anti-interference ability is not strong, which seriously affects the reliability of automotive bus communication. Summary of the invention

[0003] Embodiments of the present invention provide a communication method, device, system and storage medium based on different buses to at least solve one of the above problems.

[0004] According to a first aspect of the present invention, there is provided a communication device based on different buses, comprising:

[0005] A first bus controller, connected to the first bus, and configured to communicate with the first bus in a first communication mode;

[0006] a first processing component, connected to the first bus controller, and configured to communicate with the first bus controller in a second communication manner;

[0007] a second processing component, connected to the first processing component, and configured to communicate with the first processing component in a third communication manner;

[0008] A second data conversion device is connected to the second processing component and the second bus, and is used to convert the first data from the second processing component into second data and send the second data to the second bus; or, convert the third data from the second bus into fourth data and send the fourth data to the second processing component.

[0009] Optionally, the first processing component and the second processing component both include: a 32-bit microprocessor.

[0010] Optionally, the first bus includes a CAN bus, the first bus controller includes a CAN bus controller, and the first communication mode includes CAN bus communication.

[0011] Optionally, the second communication mode includes serial peripheral interface communication, and the first bus controller is connected to the first processing component through a serial peripheral interface.

[0012] Optionally, the second bus includes a LIN bus, and the second data conversion device includes a TTL and RS485 conversion module for converting between TTL signals and RS485 signals.

[0013] Optionally, the third communication mode includes input-output communication, and the first processing component and the second processing component are connected via a plurality of parallel input-output ports.

[0014] Optionally, the second processing component communicates with the second data conversion device via a universal asynchronous receiver-transmitter.

[0015] According to a second aspect of the present invention, there is provided a communication method based on different buses, wherein the different buses include a CAN bus and a LIN bus, and the method comprises:

[0016] Receiving a first CAN bus signal from the CAN bus;

[0017] Sending a second CAN bus signal based on the first CAN bus signal, wherein the second CAN bus signal is used to request data from the LIN bus;

[0018] converting the second CAN bus signal into a first LIN bus signal, and sending the first LIN bus signal to the LIN bus;

[0019] receiving a second LIN bus signal from the LIN bus, the second LIN bus signal being responsive to the first LIN bus signal;

[0020] converting the second LIN bus signal into a third CAN bus signal;

[0021] The third CAN bus signal is sent to the CAN bus.

[0022] According to a third aspect of the present invention, there is provided a communication system based on different buses, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements the steps of the method described in the second aspect when executing the computer program.

[0023] According to a fourth aspect of the present invention, there is provided a computer storage medium on which a computer program is stored, and when the computer program is executed by a computer, the steps of the method described in the fourth aspect are implemented.

[0024] According to the communication method, device, system and storage medium based on different buses of the embodiments of the present invention, communication is carried out between processing components on different bus sides, which improves the efficiency and accuracy of data reception and transmission, enhances the stability and anti-interference ability of data transmission, and greatly improves the reliability of automobile bus communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other purposes, features and advantages of the present invention will become more apparent by describing the embodiments of the present invention in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 is a schematic diagram of a communication device based on different buses according to an embodiment of the present invention;

[0027] Figure 2 is an example of a communication device based on different buses according to an embodiment of the present invention;

[0028] Figure 3 is a schematic flow chart of a communication method based on different buses according to an embodiment of the present invention;

[0029] Figure 4 is an example of a communication method based on different buses according to an embodiment of the present invention;

[0030] Figure 5 is a schematic structural diagram of a communication system based on different buses according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present invention more obvious, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the present invention.

[0032] At present, CAN bus and LIN bus are often used in automobile control systems at the same time because of their different characteristics and advantages. The bus in the existing automobile control system uses an 8-bit microcontroller for communication, which has low communication rate, poor communication accuracy, poor stability, and weak anti-interference ability. It cannot meet the large communication volume in the automobile system and the requirements for the speed and accuracy of data transmission and reception.

[0033] Based on the above considerations, a communication device, method, system and storage medium based on different buses according to an embodiment of the present invention are proposed. Figure 1 , Figure 1 FIG. 2 shows a schematic structural block diagram of a communication device based on different buses according to an embodiment of the present invention. Figure 1 As shown, the communication device 100 based on different buses may include:

[0034] A first bus controller 120, connected to the first bus 110, and configured to communicate with the first bus 110 in a first communication manner;

[0035] A first processing component 130, connected to the first bus controller 120, and configured to communicate with the first bus controller 120 in a second communication manner;

[0036] A second processing component 140, connected to the first processing component 130, and configured to communicate with the first processing component 130 in a third communication manner;

[0037] The data conversion device 150 is connected to the second processing component 140 and the second bus 160, and is used to convert the first data from the second processing component 140 into the second data and send the second data to the second bus 160; or, convert the third data from the second bus 160 into the fourth data and send the fourth data to the second processing component 140.

[0038] Among them, the first bus can communicate and transmit data with the second bus through the first bus controller, the first processing component, the second processing component and the data conversion device. Compared with the traditional communication method using a communication adapter, the communication device based on different buses according to the present invention communicates between processing components on different bus sides, has strong adaptability to the environment and good stability, which not only improves the efficiency and accuracy of data reception and transmission, but also enhances the stability and anti-interference ability of data transmission, greatly improving the reliability of automobile bus communication.

[0039] Optionally, the first processing component 130 and the second processing component 140 may include: a 32-bit microprocessor. Compared with the existing 8-bit single-chip microcomputer for communication, the 32-bit microprocessor has a high accuracy rate in data transmission and reception, and can also perform simple data processing and data verification; in addition, the 32-bit microprocessor supports 8 multiplexed input channels or 4 differential input pairs, and multiple serial interfaces, such as two UART / LIN, a SPI interface with a maximum of 3Mbit / s, etc., and has rich peripherals, lower power consumption and cost.

[0040] In some embodiments, the first processing component 130 and the second processing component 140 may each include a first universal asynchronous receiver-transmitter (UART0). In some embodiments, the first universal asynchronous receiver-transmitter (UART0) of the first processing component 130 and the second processing component 140 both include a boot communication channel, which is connected to a host computer (e.g., a personal computer PC).

[0041] In some embodiments, the first processing component 130 and the second processing component 140 may each include a second universal asynchronous receiver-transmitter (UART1). The second universal asynchronous receiver-transmitter (UART1) of the first processing component 130 may be used to communicate with other devices as needed. The second universal asynchronous receiver-transmitter (UART1) of the second processing component 140 may be used to communicate with the data conversion device 150.

[0042] Among them, in the 32-bit microprocessor of the embodiment of the present invention, the second universal asynchronous receiver-transmitter (UART1) can reuse the same pin with the SPI channel. When the second universal asynchronous receiver-transmitter (UART1) of the second processing component 140 is used to communicate with the data conversion device 150, the SPI channel reused by the pin can be closed, and the second universal asynchronous receiver-transmitter (UART1) of the second processing component 140 is used to communicate with the data conversion device 150.

[0043] It should be understood that the number of the universal asynchronous receiver / transmitter (UART) interfaces in the first processing component 130 and the second processing component 140 can be multiple and can be set as needed, and is not limited here.

[0044] Optionally, the first bus 110 may include a CAN bus. The CAN bus may include two signal lines. Furthermore, the CAN bus may be connected to one or more communication modules, which are used to realize data transmission and communication with the CAN bus. In the automobile system, these communication modules may be independently set or may be set in other devices inside the automobile, which is not limited here. These communication modules send their own data or receive data from other modules through the CAN bus, thereby realizing communication between the communication modules.

[0045] In some embodiments, the first communication method includes CAN bus communication.

[0046] Optionally, the first bus controller 120 includes a CAN bus controller. Further, the model of the CAN bus controller may include MCP2515. In the CAN bus, each communication unit has the same level and can send and receive data at any time. In order to ensure that there is no conflict on the two signal lines of the CAN bus when sending and receiving data, a CAN bus controller with a serial peripheral interface (SPI) can be used to connect the first processing component to the two signal lines of the CAN bus.

[0047] In some embodiments, the second communication method includes serial peripheral interface (SPI) communication.

[0048] In some embodiments, the first bus controller 120 is connected to the first processing component 130 via a serial peripheral interface (SPI).

[0049] Optionally, the second bus 160 includes a LIN bus.

[0050] In some embodiments, the data conversion device 150 includes a TTL and RS485 conversion module for converting between TTL signals and RS485 signals. The LIN bus may include a signal line to achieve data communication, and in the second processing component connected to the host computer, two signals (e.g., TX (transmit, i.e., output) and RX (receive, i.e., input)) are required to achieve data communication, so the TTL and RS485 conversion module can be used to convert the TTL signal from the second bus into an RS485 signal to match the first bus; or convert the RS485 signal from the first bus into a TTL signal to match the second bus.

[0051] Optionally, the third communication mode includes input-output (IO) communication, and the first processing component 130 and the second processing component 140 are connected through a plurality of parallel input-output ports.

[0052] In some embodiments, the first processing component 130 and the second processing component 140 can be connected through 10 input and output ports, of which 8 input and output ports (for example, IO8-IO15 in the 32-bit microprocessor in the embodiment of the present invention) are used to transmit 1 byte of data in parallel and simultaneously, and the remaining two input and output ports (for example, IO6 and IO7 in the 32-bit microprocessor in the embodiment of the present invention) are used to determine the data transmission and reception. Among them, IO6 can be the output of the first processing component 130, which is continuously read by the second processing component 140; IO7 can be the output of the second processing component 140, which is continuously read by the first processing component 130. Thereby, the communication between the first processing component 130 and the second processing component 140 is realized. Further, in the initial state, both IO6 and IO7 can be high level.

[0053] Below, see Figure 2 , Figure 2 An example of a communication device based on different buses according to an embodiment of the present invention is shown. Figure 2 As shown, the first bus is a CAN bus, the second bus is a LIN bus, and the data conversion device is a TTL and RS485 conversion module. According to an embodiment of the present invention, the communication device 200 based on different buses includes:

[0054] A first bus controller MCP is connected to the CAN bus and communicates with the CAN bus;

[0055] The first processing component M2e1 is connected to the first bus controller MCP via a serial peripheral interface (SPI) to implement serial peripheral interface communication; the first processing component M2e1 is also connected to the host computer PC via its universal asynchronous receiver-transmitter UART0 (not shown);

[0056] The second processing component M2e2 is connected to the first processing component M2e1 through a plurality of parallel input and output ports to realize parallel input and output communication; the second processing component M2e2 is also connected to the TTL and RS485 conversion module through the universal asynchronous receiver and transmitter UART1;

[0057] The TTL and RS485 conversion module is connected to the LIN bus and communicates with the LIN bus.

[0058] In addition, one or more CAN communication modules are connected to the CAN bus, and the CAN communication modules realize communication based on the CAN bus; one or more LIN communication modules (such as Slave1, Slave2, etc.) are connected to the LIN bus, and the LIN communication modules realize communication through the LIN bus.

[0059] Below, see Figure 3 , Figure 3FIG. 2 shows a schematic flow chart of a communication method based on different buses according to an embodiment of the present invention. Figure 3 As shown, the different buses include a CAN bus and a LIN bus, and the method 300 includes:

[0060] Step S310, receiving a first CAN bus signal from the CAN bus;

[0061] Step S320, sending a second CAN bus signal based on the first CAN bus signal, where the second CAN bus signal is used to request data from the LIN bus;

[0062] Step S330, converting the second CAN bus signal into a first LIN bus signal, and sending the first LIN bus signal to the LIN bus;

[0063] Step S340, receiving a second LIN bus signal from the LIN bus, wherein the second LIN bus signal responds to the first LIN bus signal;

[0064] Step S350, converting the second LIN bus signal into a third CAN bus signal;

[0065] Step S360: sending the third CAN bus signal to the CAN bus.

[0066] Among them, combined Figure 2 and Figure 3The CAN communication module on the CAN bus can send a first CAN bus signal through the CAN bus. After receiving the first CAN bus signal, the first bus controller MCP can output a second CAN bus signal based on the first CAN bus signal, and send the second CAN bus signal to the first processing component M2e1 through the SPI interface; the first processing component M2e1 can generate a first LIN bus signal for requesting data from the LIN bus based on the second CAN bus signal and send the first LIN bus signal to the second processing component M2e2 through multiple parallel input and output ports for requesting data from the LIN bus; the second processing component M2e2 sends the first LIN bus signal to the data conversion device through its universal asynchronous receiver-transmitter UART1; the data conversion device converts the received first LIN bus signal into TTL data format, and sends the TTL data format signal to the corresponding LIN communication module connected to the LIN bus; after receiving the corresponding TTL data format signal, the corresponding LIN communication module obtains in response to the corresponding TTL data format signal The second LIN bus signal is received and sent to the LIN bus; then, the data conversion device receives the second LIN bus signal from the LIN bus and converts the second LIN bus signal into RS485 data format, and sends the RS485 data format signal to the second processing component M2e2 through the universal asynchronous receiver / transmitter UART1; the second processing component M2e2 outputs the corresponding third CAN bus signal after receiving the RS485 data format signal, and sends the third CAN bus signal to the first processing component M2e1 through multiple parallel input and output ports; after the first processing component M2e1 receives the third CAN bus signal, it sends the third CAN bus signal to the first bus controller MCP through the SPI port, and the first bus controller MCP then sends the third CAN bus signal to the corresponding CAN communication module connected to the CAN bus to realize communication between the CAN bus and the LIN bus, thereby improving the efficiency and accuracy of data reception and transmission, enhancing the stability and anti-interference ability of data transmission, and greatly improving the reliability of automobile bus communication.

[0067] Below, see Figure 4 , Figure 4 An example of a communication method based on different buses according to an embodiment of the present invention is shown. Figure 3 and Figure 4 , the communication method based on different buses according to an embodiment of the present invention may include:

[0068] After initialization, the first bus controller MCP and the first processing component on the CAN bus side and the second processing component and the data conversion device on the LIN bus side may all enter a waiting state;

[0069] After the first bus controller MCP receives the message from the CAN bus, it can enter an interrupt;

[0070] The first processing component reads the message from the first bus controller MCP, uploads it to the host computer PC, and sends data to the second processing component; then, the first processing component initializes receiving data and waits for receiving data;

[0071] After receiving the data sent by the first processing component, the second processing component converts the data into a TTL signal instruction through a data conversion device and sends it to the corresponding LIN bus module Slave on the LIN bus;

[0072] After receiving the TTL signal instruction, the corresponding LIN bus module Slave obtains feedback data in response to the TTL signal instruction;

[0073] The data conversion device receives the data fed back from the corresponding LIN bus module Slave through the LIN bus, and converts the fed back data into RS485 feedback data; then, the RS485 feedback data is sent to the second processing component, and the second processing component processes the RS485 feedback data to obtain CAN feedback data that complies with the CAN bus protocol;

[0074] The second processing component then sends the CAN feedback data to the first processing component through a plurality of parallel input and output ports;

[0075] After receiving the CAN feedback data, the first processing component sends the CAN feedback data to the CAN bus through the first bus controller MCP;

[0076] CAN feedback data can be sent to the CAN communication module via the CAN bus (can be simulated using a CAN analyzer);

[0077] After the CAN communication module successfully receives the CAN feedback data, the first bus controller MCP jumps out of the interruption and waits for the next reception of a message from the CAN bus.

[0078] According to another aspect of the present invention, a communication system based on different buses is provided. Figure 5 , Figure 5 FIG. 2 shows a schematic structural diagram of a communication system based on different buses according to an embodiment of the present invention. Figure 5 As shown, the system 500 includes a memory 510 and a processor 520;

[0079] The memory 510 stores program codes for implementing corresponding steps in the communication method based on different buses according to an embodiment of the present invention;

[0080] The processor 520 is used to run the program code stored in the memory 510 to execute the corresponding steps of the communication method based on different buses according to the embodiment of the present invention.

[0081] In one embodiment, when the program code is executed by the processor 520 , corresponding steps of the aforementioned communication method based on different buses according to the embodiment of the present invention are executed.

[0082] In addition, according to another aspect of the present invention, a computer-readable storage medium is provided, on which program instructions are stored. When the program instructions are run by a computer or a processor, the program instructions are used to execute the corresponding steps of the communication method based on different buses according to an embodiment of the present invention, and are used to implement a communication system based on different buses according to an embodiment of the present invention.

[0083] In summary, according to the communication method, device, system and storage medium based on different buses according to the embodiments of the present invention, communication is carried out between processing components on different bus sides, which improves the efficiency and accuracy of data reception and transmission, enhances the stability and anti-interference ability of data transmission, and greatly improves the reliability of automobile bus communication.

[0084] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0086] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0087] Similarly, it should be understood that in order to streamline the present invention and help understand one or more of the various inventive aspects, in the description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present invention should not be interpreted as reflecting the following intention: the claimed invention requires more features than the features explicitly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present invention.

[0088] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0089] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0090] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0091] The above is only a specific embodiment of the present invention or an explanation of a specific embodiment, and the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A communication device based on different buses, characterized in that: The device comprises: A first bus controller, connected to the first bus, and configured to communicate with the first bus in a first communication mode; a first processing component, connected to the first bus controller, and configured to communicate with the first bus controller in a second communication manner; a second processing component, connected to the first processing component, and configured to communicate with the first processing component in a third communication manner; a second data conversion device, connected to the second processing component and the second bus, for converting the first data from the second processing component into the second data and sending the second data to the second bus; or, for converting the third data from the second bus into the fourth data and sending the fourth data to the second processing component; Wherein, the first bus includes a CAN bus, the first bus controller includes a CAN bus controller, and the first communication mode includes CAN bus communication; The second bus includes a LIN bus, and the second data conversion device includes a TTL and RS485 conversion module for converting between TTL signals and RS485 signals; The second communication mode includes serial peripheral interface communication, the third communication mode includes input and output communication, and the second processing component and the second data conversion device communicate with each other via UART.

2. The device according to claim 1, characterized in that The first processing component and the second processing component both include: a 32-bit microprocessor.

3. The device according to claim 1, characterized in that The second communication mode includes serial peripheral interface communication, and the first bus controller is connected to the first processing component through a serial peripheral interface.

4. The device according to claim 1, characterized in that The third communication mode includes input-output communication, and the first processing component and the second processing component are connected via a plurality of parallel input-output ports.

5. The device according to claim 1, characterized in that The second processing component communicates with the second data conversion device via a universal asynchronous receiver-transmitter.

6. A communication method based on different buses, characterized in that: The different buses include a CAN bus and a LIN bus, and the method is applied to a communication device as described in any one of claims 1 to 5, and the method includes: Receiving a first CAN bus signal from the CAN bus; Sending a second CAN bus signal based on the first CAN bus signal, wherein the second CAN bus signal is used to request data from the LIN bus; converting the second CAN bus signal into a first LIN bus signal, and sending the first LIN bus signal to the LIN bus; receiving a second LIN bus signal from the LIN bus, the second LIN bus signal being responsive to the first LIN bus signal; converting the second LIN bus signal into a third CAN bus signal; The third CAN bus signal is sent to the CAN bus.

7. A communication system based on different buses, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to claim 6 are implemented.

8. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a computer, the steps of the method according to claim 6 are implemented.

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