CN112596767B - CAN burns record portable device - Google Patents
CAN burns record portable device Download PDFInfo
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- CN112596767B CN112596767B CN202011484489.6A CN202011484489A CN112596767B CN 112596767 B CN112596767 B CN 112596767B CN 202011484489 A CN202011484489 A CN 202011484489A CN 112596767 B CN112596767 B CN 112596767B
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- 238000013016 damping Methods 0.000 claims abstract description 6
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 230000035939 shock Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a CAN (controller area network) burning portable device, which comprises an MCU (micro control unit), wherein the MCU is in information interaction with an upper computer through a data interface and is also connected with a storage module; the MCU is connected with program data transmitted by the upper computer and is written into the storage module; the MCU is electrically connected with the instrument terminal through the CAN bus, and the MCU writes the program data stored by the storage module into the instrument terminal; the MCU is connected with a control panel, and the control panel transmits control instructions to the MCU; the MCU is powered by a power module, and the power module is electrically connected with a power interface for charging. According to the invention, the CAN burning portable device is arranged to burn data to the instrument terminal through the CAN bus, so that the power consumption is low, the volume is small, the weight is light, and the portable device is convenient to carry; the device is convenient to use at the batch burning instrument terminals, and can improve the working efficiency; and protect the burning device through setting up the casing, through interior shell structure and damping spring cooperation shock attenuation, avoid causing the damage in the carrying.
Description
Technical Field
The invention belongs to the technical field of vehicle instruments, and particularly relates to a CAN (controller area network) burning portable device.
Background
The functions of the automobile instrument can change along with the change of the requirements of automobile manufacturers and automobile end users, and the updating of instrument software is a necessary action. The upgrade of the instrument terminal software is realized by the fact that the MCU chip FLASH used in the instrument terminal is rewritten with data. The most effective mode is to burn through a special tool and software and a computer USB port. This method is affected by the place and external factors, although the recording speed is high. Such as: the burning line cannot be too long, the computer notebook is limited by the computer electric quantity, and the large-batch burning is a relatively large burden to staff, and the burning efficiency is low. The second burning mode uses remote burning, namely, the remote burning is connected to a cloud platform through GPRS, the cloud platform loads intelligent instrument programs, and FLASH data are burnt through communication between a network and an instrument, so that the instrument programs are updated finally. The burning mode has to be connected with GPRS equipment on the vehicle, and the cost is high. The burning result is easily limited by the factors of the communication network. At the current instrument terminal, the remote burning function is rarely provided or is imperfect, and abnormal interruption conditions possibly existing during burning are not fully processed, so that burning failure is caused, and the normal operation of equipment is affected. Safety and reliability are increasingly important factors for instrument terminal devices.
Disclosure of Invention
The invention aims to provide a CAN (controller area network) burning portable device, which is arranged to burn data to an instrument terminal through a CAN bus, and has the advantages of low power consumption, small volume, light weight and convenience in carrying; the device is convenient to use at the batch burning instrument terminals, and can improve the working efficiency; and protect the burning device through setting up the casing, through interior shell structure and damping spring cooperation shock attenuation, avoid causing the damage in the carrying.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a CAN (controller area network) burning portable device, which comprises an MCU (micro control unit), wherein the MCU performs information interaction with an upper computer through a data interface, and is also connected with a storage module; the MCU is connected with program data transmitted by the upper computer and is written into the storage module; the MCU is electrically connected with the instrument terminal through the CAN bus, and the MCU writes the program data stored by the storage module into the instrument terminal; the MCU is connected with a control panel, and the control panel transmits control instructions to the MCU; the MCU is powered by a power module, and the power module is electrically connected with a power interface for charging.
Further, the portable device includes a housing; a cover plate is arranged on the upper surface of the shell; the cover plate is provided with a control panel and an interface module; an inner shell is movably arranged in the outer shell; two opposite inner side surfaces of the shell are respectively provided with a chute; the inner bottom surface of the shell is provided with a plurality of damping springs side by side;
Two sides of the upper surface of the inner shell are respectively provided with a sliding block; the sliding block is in sliding fit with the sliding groove; the power supply module is arranged on the inner bottom surface of the inner shell; mounting protrusions are arranged on two opposite inner side surfaces of the inner shell; the mounting protrusion is provided with a fixing plate; the upper surface of the fixed plate is provided with a wire through hole; a circuit board is fixed on the upper surface of the fixed plate; the MCU is arranged on the circuit board;
The power line of the power module passes through the line through hole and is electrically connected with the circuit board; the circuit board is electrically connected with the control panel and the interface module respectively.
Further, a fixing screw hole is formed in the upper surface of the mounting protrusion; fixing holes matched with the fixing bolts are formed in two sides of the upper surface of the fixing plate; the fixing bolt penetrates through the fixing hole to be meshed with the fixing screw hole.
Further, two sides of the upper surface of the inner shell are respectively provided with a plurality of mounting screw holes; the upper surface of the sliding block is provided with a mounting hole matched with the mounting bolt; the mounting bolts penetrate through the mounting holes and are meshed with the mounting screw holes.
Further, the interface module comprises a charging interface for charging the power supply module, a CAN bus interface communicated with the instrument terminal and a data interface communicated with the upper computer.
The invention has the following beneficial effects:
The CAN burning portable device is arranged to burn data to the instrument terminal through the CAN bus, so that the power consumption is low, the volume is small, the weight is light, and the portable device is convenient to carry; the device is convenient to use at the batch burning instrument terminals, and can improve the working efficiency; and protect the burning device through setting up the casing, through interior shell structure and damping spring cooperation shock attenuation, avoid causing the damage in the carrying.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system block diagram of a CAN-burnt portable device;
fig. 2 is a schematic structural diagram of a CAN-burning portable device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1, the invention relates to a portable device for CAN burning, which comprises an MCU, wherein the MCU performs information interaction with an upper computer through a data interface, and is also connected with a storage module; the MCU is connected with program data transmitted by the upper computer and is written into the storage module; the MCU is electrically connected with the instrument terminal through the CAN bus, and the MCU writes the program data stored by the storage module into the instrument terminal; the MCU is connected with a control panel, and the control panel transmits control instructions to the MCU; the MCU is powered by a power module, and the power module is electrically connected with a power interface for charging.
Wherein the portable device comprises a housing 1, as shown in fig. 2; the upper surface of the shell 1 is provided with a cover plate 2; the cover plate 2 is provided with a control panel 7 and an interface module 8; an inner shell 3 is movably arranged in the outer shell 1; two opposite inner side surfaces of the shell 1 are respectively provided with a chute 101; the inner bottom surface of the shell 1 is provided with a plurality of damping springs 102 side by side;
two sides of the upper surface of the inner shell 3 are respectively provided with a sliding block 4; a plurality of mounting screw holes 303 are respectively arranged on two sides of the upper surface of the inner shell 3; the upper surface of the sliding block 4 is provided with a mounting hole 401 matched with a mounting bolt 402; the mounting bolts 402 pass through the mounting holes 401 and are engaged with the mounting screw holes 303; the sliding block 4 is in sliding fit with the sliding groove 101; the power module 9 is arranged on the inner bottom surface of the inner shell 3;
Mounting protrusions 301 are arranged on two opposite inner sides of the inner shell 3; the fixing plate 5 is mounted on the mounting boss 301; the upper surface of the mounting protrusion 301 is provided with a fixing screw hole 302; fixing holes 501 matched with the fixing bolts 502 are formed in two sides of the upper surface of the fixing plate 5; the fixing bolt 502 passes through the fixing hole 501 to be meshed with the fixing screw hole 302; the upper surface of the fixed plate 5 is provided with a through line hole 503; a circuit board 6 is fixed on the upper surface of the fixed plate 5; the MCU is arranged on the circuit board 6;
The power line of the power module 9 passes through the line through hole 503 and is electrically connected with the circuit board 6; the circuit board 6 is respectively and electrically connected with the control panel 7 and the interface module 8; the interface module 8 comprises a charging interface for charging the power module 9, a CAN bus interface for communicating with the instrument terminal and a data interface for communicating with the upper computer.
Embodiment one: the invention relates to a working principle of a CAN (controller area network) burning portable device, which comprises the following steps: the MCU communicates with the vehicle-mounted MCU through a CAN interface and a corresponding protocol, and the FLASH of the vehicle-mounted instrument MCU is rewritten through establishing a bootloader; the aim of updating the automobile instrument software is fulfilled.
Bootloader, as its name implies, is a piece of program loaded code residing in the ECU nonvolatile memory, and runs bootloader each time the ECU resets. The program storage space of Flash is divided into bootloader area and user application area. bootloader programs are generally unmodified, and can be used all the time after one burning (although the bootloader program itself can be updated, the principle is the same), but the user application area can be repeatedly modified by bootloader. The user application area is the common application code, which is the main code for realizing the function of the singlechip. bootloader region code exists to implement control of the user application region, and its program logic is explicit: and establishing special communication with the upper computer, modifying program content in Flash or EEPROM by a simple communication mode such as a serial port, a CAN and the like, and jumping out of the program content of the bootloader to execute user application after the modification is completed.
The existing instrument uses the MCU of MPC5602B of NXP, the specific FLASH size is 256K, and the corresponding FLASH is divided as follows:
| Name of the name | Address range | Size and dimensions of |
| bootloader | 0x0000-0x7FFF | 20K |
| user application(APP) | 0x8000-0x3FFFF | 236K |
The MCU of the application uses a minimum system of a MPC5602B singlechip of NXP to directly supply power through 5 v; the CAN interface is reserved for communication with the instrument terminal;
And analyzing the instrument software S19 file through the upper computer. The S19 information to be updated can be obtained as follows:
| Head address of burning section | The address needs the data (individual) to be burnt |
| 0x8000 | 8 |
| 0x8020 | 748 |
| 0x9000 | 576 |
| 0xa010 | 97284 |
| 0x22000 | 500 |
| 0x221f8 | 16 |
C, the information to be burnt is exported and generated, and the file C is added into a storage module; the MCU is connected with the instrument terminal through the CAN line, and a start key on the control panel is pressed for a long time, so that the MCU is communicated with the instrument terminal, and data of a corresponding address are burnt to the instrument terminal through the CAN bus.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (1)
1. The CAN burning portable device is characterized in that: the system comprises an MCU, wherein the MCU performs information interaction with an upper computer through a data interface, and the MCU is also connected with a storage module; the MCU is connected with program data transmitted by the upper computer and is written into the storage module;
The MCU is electrically connected with the instrument terminal through the CAN bus, and the MCU writes the program data stored by the storage module into the instrument terminal;
the MCU is connected with a control panel, and the control panel transmits control instructions to the MCU;
the MCU is powered by a power supply module, and the power supply module is electrically connected with a power supply interface for charging;
also comprises a shell (1); the upper surface of the shell (1) is provided with a cover plate (2); a control panel (7) and an interface module (8) are arranged on the cover plate (2);
an inner shell (3) is movably arranged in the outer shell (1);
Two opposite inner side surfaces of the shell (1) are respectively provided with a chute (101); the inner bottom surface of the shell (1) is provided with a plurality of damping springs (102) side by side;
Two sides of the upper surface of the inner shell (3) are respectively provided with a sliding block (4); the sliding block (4) is in sliding fit with the sliding groove (101);
A power supply module (9) is arranged on the inner bottom surface of the inner shell (3); mounting protrusions (301) are arranged on two opposite inner side surfaces of the inner shell (3); the mounting protrusion (301) is provided with a fixing plate (5); the upper surface of the fixed plate (5) is provided with a wire through hole (503); a circuit board (6) is fixed on the upper surface of the fixed plate (5); the MCU is arranged on the circuit board (6);
The power line of the power module (9) passes through the line through hole (503) and is electrically connected with the circuit board (6); the circuit board (6) is respectively and electrically connected with the control panel (7) and the interface module (8);
The upper surface of the mounting protrusion (301) is provided with a fixing screw hole (302); fixing holes (501) matched with the fixing bolts (502) are formed in two sides of the upper surface of the fixing plate (5); the fixing bolt (502) passes through the fixing hole (501) to be meshed with the fixing screw hole (302);
A plurality of mounting screw holes (303) are respectively arranged on two sides of the upper surface of the inner shell (3); the upper surface of the sliding block (4) is provided with a mounting hole (401) matched with the mounting bolt (402); the mounting bolt (402) penetrates through the mounting hole (401) to be meshed with the mounting screw hole (303);
the interface module (8) comprises a charging interface for charging the power supply module (9), a CAN bus interface communicated with the instrument terminal and a data interface communicated with the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484489.6A CN112596767B (en) | 2020-12-16 | 2020-12-16 | CAN burns record portable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484489.6A CN112596767B (en) | 2020-12-16 | 2020-12-16 | CAN burns record portable device |
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| Publication Number | Publication Date |
|---|---|
| CN112596767A CN112596767A (en) | 2021-04-02 |
| CN112596767B true CN112596767B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011484489.6A Active CN112596767B (en) | 2020-12-16 | 2020-12-16 | CAN burns record portable device |
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2020
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