LIN communication upgrade device and multi-channel synchronous upgrade system

Abstract

This utility model discloses a LIN communication upgrade device and a multi-channel synchronous upgrade system. The LIN communication upgrade device includes a USB interface, a DC-DC boost converter, a LIN communication module, an LDO buck converter, a switch, and an MCU microprocessor. The USB interface is connected to the LIN communication module via the DC-DC boost converter, providing power to the LIN communication module. The USB interface is also connected to the MCU microprocessor via the LDO buck converter, providing power to the MCU microprocessor. The MCU microprocessor is connected to the USB interface, the LIN communication module, and the switch. The MCU microprocessor communicates with a host computer via the USB interface and with the product to be upgraded via the LIN communication module. Upgrades can be initiated either by the host computer or manually via the switch. This utility model enables batch synchronous upgrades of products with LIN interfaces, offering advantages such as low cost and easy expansion.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronics technology, and in particular to a LIN communication upgrade device and a multi-channel synchronous upgrade system. Background Technology

[0002] LIN (Local Interconnect Network) communication is a low-cost serial communication network used to implement distributed electronic system control in automobiles. LIN aims to provide auxiliary functions to existing automotive networks (such as the CAN bus). Therefore, the LIN bus is an auxiliary bus network. In situations where the bandwidth and versatility of the CAN bus are not required, such as communication between smart sensors and braking systems, using the LIN bus can significantly reduce costs.

[0003] With the rapid development of the industrial and automotive electronics industries, various electronic products with LIN interfaces are constantly being updated and replaced, leading to a surge in market demand for product testing. In batch testing scenarios, product upgrades face numerous challenges and can easily become bottlenecks in the production process. Traditional programmers typically only support a one-to-one programming method, meaning only one product can be programmed at a time. This inefficient programming mode is clearly insufficient to meet the urgent needs of high-efficiency production when a large number of products require upgrades.

[0004] While using multi-channel programmers to improve programming efficiency can alleviate the bottleneck to some extent, the purchase and maintenance costs of multi-channel programmers, as well as the requirements for supporting equipment and the environment, will significantly increase the overall testing cost. For example, some advanced multi-channel programmers require complex control software, high-precision signal transmission interfaces, and stable power supply systems. These high-end configurations make them expensive, forcing companies to face the pressure of rising costs while pursuing efficient programming, thus creating a dilemma. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a LIN communication upgrade device and a multi-channel synchronous upgrade system.

[0006] To achieve the above objectives, this utility model provides, on the one hand, a USB interface, a DC-DC boost module, a LIN communication module, an LDO buck module, a switch, and an MCU microprocessor; wherein,

[0007] The USB interface is connected to the LIN communication module through the DC-DC boost module, providing power to the LIN communication module.

[0008] The USB interface is connected to the MCU microprocessor through the LDO step-down module, providing power to the MCU microprocessor.

[0009] The MCU microprocessor is connected to the USB interface, the LIN communication module, and the switch respectively; wherein, the MCU microprocessor communicates with the host computer through the USB interface, communicates with the product to be upgraded through the LIN communication module, and manually initiates the upgrade through the switch.

[0010] Preferably, the LIN communication upgrade device further includes a LIN interface connector; the LIN interface connector is connected to the LIN communication module.

[0011] Preferably, the LIN communication upgrade device further includes a display module, which is connected to the MCU microprocessor.

[0012] Preferably, the display module is an OLED display screen.

[0013] Preferably, the LIN communication upgrade device further includes an indicator light connected to the MCU microprocessor.

[0014] Preferably, the LIN communication upgrade device further includes a storage module connected to the MCU microprocessor.

[0015] Another aspect of this utility model provides a multi-channel synchronous upgrade system for LIN communication, including a host computer and multiple LIN communication upgrade devices as described above; wherein, the host computer is connected to multiple LIN communication upgrade devices.

[0016] The LIN communication upgrade device and system provided by this utility model can upgrade electronic products with LIN interfaces in batches, reducing the labor costs caused by excessive burning time. In addition, this utility model supports upgrades triggered by either communication or mechanical switches. Moreover, the device has a simple structure, is easy to implement, and has advantages such as low cost and easy expansion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a LIN communication upgrade device according to an optional embodiment of the present invention;

[0018] Figure 2 This is a flowchart illustrating the workflow of the LIN communication upgrade device of this utility model.

[0019] Figure 3 This is a schematic diagram of the LIN communication upgrade system provided by this utility model. Detailed Implementation

[0020] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means adopted by the present invention to achieve its intended purpose.

[0021] like Figure 1 As shown, the LIN communication upgrade device provided in this embodiment of the present invention includes a USB interface 11, a DC-DC boost module 12, a LIN communication module 13, an LDO buck module 14, a switch 15, and an MCU microprocessor 16; wherein,

[0022] USB interface 11 is connected to LIN communication module 13 via DC-DC boost module 12, providing power to LIN communication module 13; USB interface 11 is also connected to MCU microprocessor 16 via LDO buck module 15, providing power to MCU microprocessor 16; simultaneously, USB interface 11 is also directly connected to MCU microprocessor 16 for communication with host computer, enabling bidirectional data signal transmission. Therefore, it can be seen that this utility model uses USB interface 11 to achieve power supply and communication in one, optimizing cost.

[0023] The DC-DC boost module 12 can boost the USB power supply voltage of the USB interface 11 to 12V, providing 12V power to the LIN communication module 13.

[0024] The LDO step-down module 14 converts the USB power supply voltage of the USB interface 11 to DC 3.3V, providing 3.3V power to chips such as the MCU microprocessor 16.

[0025] The MCU microprocessor 16 serves as the control center for the entire device, and is connected to the USB interface 11, the LIN communication module 13, and the switch 15.

[0026] The MCU microprocessor 16 has a built-in Modbus RTU serial communication protocol and communicates with the host computer via USB interface 11. For example, the MCU microcontroller receives communication commands from the host computer, and the host computer controls the entire device to start and upgrade via communication.

[0027] The MCU microprocessor 16 communicates with the product to be upgraded via the LIN communication module 13. The LIN communication module 13 provides the LIN hardware circuitry required for the upgrade. Specifically, the MCU microprocessor 16 connects to the LIN communication module 13 via a UART port to read the status of the device to be upgraded and sends the upgrade file to the device according to the LIN communication protocol.

[0028] Switch 15 is connected to the GPIO port of the MCU microprocessor 16 for manual triggering of the upgrade. The MCU microprocessor 16 integrates a switch detection circuit, which can detect the triggering status of switch 15 and initiate the upgrade based on the trigger signal from switch 15. Switch 15 can be a physical button or a touch screen button; the form of switch 15 is not limited in this embodiment.

[0029] In one embodiment of this invention, the LIN communication upgrade device is equipped with a LIN interface connector 17. The LIN interface connector 17 is connected to the LIN communication module 13 and is used to connect to an external product to be upgraded.

[0030] In one embodiment of this invention, the LIN communication upgrade device is equipped with a storage module 18 connected to the SPI port of the MCU microprocessor 16. This storage module 18 is a large-capacity FLASH memory mounted off-chip, supporting expandable use. This invention provides storage expansion through off-chip FLASH, supporting more and larger program download tasks.

[0031] In an optional embodiment of this utility model, the LIN communication upgrade device is equipped with a display module 19, connected to the SPI port of the MCU microprocessor 16. Preferably, an OLED display screen is used to display upgrade status information, such as progress information and status error information. The MCU microprocessor 16 sends the upgrade file to the LIN bus according to the LIN communication protocol, and simultaneously controls the OLED display screen to refresh the current upgrade status and progress value. Optionally, when the display module 19 uses a touch display screen, it serves as an interactive interface, providing an interactive interface for the switch 15 to realize the touch-controlled upgrade function of the switch 15.

[0032] In an optional embodiment of this utility model, the LIN communication upgrade device is equipped with an indicator light 20, which is connected to the GPIO port of the MCU microprocessor 16 and is used to indicate whether the power supply is properly connected.

[0033] like Figure 2 As shown, the working principle of the LIN communication upgrade device provided by this utility model specifically includes:

[0034] Step 101, Prepare the download environment: Ensure the test environment meets the requirements, including proper power supply, grounding, and shielding, to reduce the impact of interference on the test results. Then connect the LIN communication upgrade device to the test fixture and check the reliability of the connection.

[0035] Step 102, Power-on check: Check if the power indicator light is normal, and check if the USB interface 11 is communicating normally.

[0036] Step 103, Configure the files used for the upgrade: Use a programming tool such as J-LINK to download the upgrade program to the specified FLASH address in advance, or use a serial port tool to configure the programming file.

[0037] Step 104, Start Download: The host computer sends an enable command, the MCU microprocessor 16 receives and parses the command, and executes the download command if it is correct.

[0038] Step 105, Reading the working status: The host computer sends a read status command, and the MCU microcontroller returns the current working status. If a successful status is read, the download is successful. If a failure status is read, exception handling is required, and the OLED display and status indicator light are refreshed.

[0039] Step 106: Upgrade complete. The host computer will upload the upgrade process record and upgrade results to the cloud server.

[0040] like Figure 3 As shown in the figure, this utility model also provides a multi-channel synchronous upgrade system based on the aforementioned LIN communication upgrade device, including: a host computer and multiple LIN communication upgrade devices as described above. As can be seen from the figure, each LIN communication upgrade device is connected to the host computer via a USB port. The host computer distributes communication commands to each LIN communication upgrade device in parallel via the USB port. Each LIN communication upgrade device upgrades the connected products according to the communication commands. Therefore, the LIN communication upgrade devices in this utility model operate independently, without interference, and have the advantages of high parallel operation efficiency.

[0041] In summary, the LIN communication upgrade device of this utility model can upgrade electronic products with LIN interfaces, supports two trigger upgrade methods: communication method or mechanical switch, and has the advantages of low cost and easy expansion. It can also upgrade products with LIN upgrade interfaces in batches and reduce the time cost caused by excessive burning time.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A LIN communication upgrade device, characterized in that, It includes a USB interface, a DC-DC boost module, a LIN communication module, an LDO buck module, switches, and an MCU microprocessor; among which, The USB interface is connected to the LIN communication module through the DC-DC boost module, providing power to the LIN communication module. The USB interface is connected to the MCU microprocessor through the LDO step-down module, providing power to the MCU microprocessor. The MCU microprocessor is connected to the USB interface, the LIN communication module, and the switch respectively; wherein, the MCU microprocessor communicates with the host computer through the USB interface, communicates with the product to be upgraded through the LIN communication module, and manually initiates the upgrade through the switch.

2. The LIN communication upgrade device according to claim 1, characterized in that, The LIN communication upgrade device also includes a LIN interface connector; the LIN interface connector is connected to the LIN communication module.

3. The LIN communication upgrade device according to claim 1, characterized in that, The LIN communication upgrade device also includes a display module, which is connected to the MCU microprocessor.

4. The LIN communication upgrade device according to claim 3, characterized in that, The display module is an OLED display screen.

5. The LIN communication upgrade device according to claim 1, characterized in that, The LIN communication upgrade device also includes indicator lights connected to the MCU microprocessor.

6. The LIN communication upgrade device according to claim 1, characterized in that, The LIN communication upgrade device also includes a storage module connected to the MCU microprocessor.

7. A multi-channel synchronous upgrade system using LIN communication, characterized in that, It includes a host computer and a plurality of LIN communication upgrade devices as described in any one of claims 1 to 6; wherein the host computer is connected to the plurality of the LIN communication upgrade devices.

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