CN213934872U

CN213934872U - Serial port-to-FDCAN bus conversion recording device

Info

Publication number: CN213934872U
Application number: CN202120148245.4U
Authority: CN
Inventors: 汤湘伟; 夏继钢; 王红敏; 闫双山; 权计超; 屈宏博; 朱文超; 经林
Original assignee: CETC Yangzhou Baojun Electronic Co Ltd
Current assignee: CETC Yangzhou Baojun Electronic Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-08-10
Anticipated expiration: 2031-01-19

Abstract

The utility model discloses a serial ports changes FDCAN bus conversion recorder in the communication technology field, include: the device comprises a carrier plate, a USB interface, an FDCAN interface and an SD card interface, wherein the SD card interface is internally provided with an SD card, and the carrier plate is also provided with a WIFI expansion interface which is used for inquiring or downloading data in the SD card; the core board is connected with the support plate in an opposite-inserting mode and comprises an ARM chip and a Flash chip, the Flash chip is connected with the ARM chip and used for receiving and distributing serial interface or FDCAN interface data, and meanwhile the core board is used for storing the serial interface or the FDCAN interface data into the SD card. The serial port-to-FDCAN bus conversion recording device not only has the function of data interface conversion, but also has the functions of data recording, inquiring and downloading, and is convenient for data analysis and fault problem search so as to meet the requirements of increasingly complex application scenes.

Description

Serial port-to-FDCAN bus conversion recording device

Technical Field

The utility model relates to the field of communication technology, in particular to serial ports changes FDCAN bus conversion recorder.

Background

With the fact that the amount of data needing interaction in some embedded application scenes is larger and larger, a network or other high-speed serial buses are adopted, the system is too complex, and the serial port mode is the most widely applied and reliable data interaction mode.

The connection between the serial port and the FDCAN bus often requires the use of a corresponding data interface conversion device, and the conventional data interface conversion device can only realize basic interconnection and intercommunication, has a single function, and is difficult to meet the requirements of increasingly complex application scenarios.

SUMMERY OF THE UTILITY MODEL

This application has solved the problem of conventional data interface conversion equipment function singleness among the prior art through providing a serial ports to FDCAN bus conversion recorder, has data record, looks over the function, has made things convenient for data analysis and trouble problem to seek to satisfy more complicated application scene demand.

The embodiment of the application provides a serial ports changes FDCAN bus conversion recorder, includes:

the device comprises a carrier plate, a USB interface, an FDCAN interface and an SD card interface, wherein the SD card interface is internally provided with an SD card, and the carrier plate is also provided with a WIFI expansion interface which is used for inquiring or downloading data in the SD card;

the kernel core board, the kernel core board with the support plate is to inserting the connection, the kernel core board includes ARM chip and Flash chip, the Flash chip with the ARM chip is connected, the kernel core board is used for receiving and distributing serial interface or FDCAN interface data, simultaneously the kernel core board still be used for with serial interface or FDCAN interface data storage extremely in the SD card.

The beneficial effects of the above embodiment are as follows: the device can realize the conversion of high-speed serial port data and an FDCAN bus through the support plate and the core plate, and simultaneously integrates a parallel Flash chip on the core plate so as to realize an electric storage function, and the device can also store the data to an SD card while receiving and distributing the data at the serial port or the FDCAN port so as to realize the monitoring and recording of the whole process of the data, so that the device not only has the function of data interface conversion, but also has the functions of data recording, inquiring and downloading, thereby facilitating the data analysis and the fault problem search and meeting the requirements of more complex application scenes; the WIFI expansion interface enables the device to have the function of expanding the wireless network interface, and more flexible data viewing and downloading can be achieved through WIFI connection.

On the basis of the above embodiments, the present application can be further improved, specifically as follows:

in one embodiment of the present application, the carrier board is further provided with a test interface, and the test interface is used for querying or downloading data in the SD card.

In one embodiment of the present application, the core board further includes an SDRAM chip, and the SDRAM chip is connected to the ARM chip. A piece of SDRAM chip is arranged on the core board to realize the capacity expansion, thereby meeting the application requirements of a large amount of memory, such as the realization of TCP/IP protocol.

In one embodiment of the present application, the core board further includes an EEPROM chip, and the EEPROM chip is connected to the ARM chip. An EEPROM chip with an IIC interface is arranged on the core board and used for realizing the storage function of small capacity or characteristic data of a user.

In one embodiment of the present application, the core board further includes a network transceiver chip, the network transceiver chip is connected to the ARM chip, and the carrier board is correspondingly provided with a network interface and a protection circuit. In order to realize the network port function, an 10/100M network transceiver chip is arranged on a core board, and the network function extension is realized by matching an MAC controller in the ARM and a network interface and a protection circuit on a carrier board.

In one embodiment of the present application, the carrier board is provided with a power protection unit, the power protection unit is used for connecting an external power supply, and the power protection unit includes an EMI filter, a reverse connection protection circuit, and an overvoltage protection circuit, which are connected in sequence. The external power supply input firstly reaches the power supply protection unit, the power supply input firstly passes through the EMI filter and then reaches the reverse connection protection circuit formed by the MOS tube (SUD50P04), then the overvoltage detection is realized on the overvoltage protection circuit formed by the overvoltage detection chip, when the power supply is reversely connected or exceeds the protection voltage, the voltage is cut off, the rear end circuit is protected, and the reverse connection and the internal circuit are prevented from being damaged by high voltage.

In one of the embodiments of this application, the support plate still is provided with RS232 protection circuit, FDCAN protection circuit, RS232 protection circuit, FDCAN protection circuit respectively with serial interface, FDCAN interface correspond the connection, RS232 protection circuit, FDCAN protection circuit are used for realizing interface conversion and magnetic isolation function. The RS232 protection circuit is used for converting the serial port level of the internal LVTTL into the RS232 level to be output, has the function of magnetic isolation of internal and external signals and has good protection effect on the internal circuit; the FDCAN port isolation protection circuit realizes the magnetic isolation of internal and external FDCAN signals and realizes the protection function of the internal and external signals.

In one embodiment of the application, the carrier plate is further provided with a WIFI expansion interface, and the WIFI expansion interface is used for inquiring or downloading the data in the SD card. The WIFI expansion interface enables the device to have the function of expanding the wireless network interface, and more flexible data viewing and downloading can be achieved through WIFI connection.

In one of the embodiments of this application, serial ports changes FDCAN bus conversion recorder and still includes the casing, be provided with power source and switch on the casing, support plate, nuclear core plate all set up in the casing, serial ports, FDCAN interface and test interface extend to respectively outside the casing. Convenient for external connection.

In one embodiment of the present application, an indicator light is disposed on the housing, and the indicator light is connected to and controlled by the ARM chip. The indicator light is a light emitting diode, and the ARM chip directly controls the on and off of the indicator light, so that the internal state of the ARM is represented, and a user can conveniently recognize the internal working state.

In one embodiment of the present application, a heat dissipation pad is disposed between the core board and the chassis. The power consumption of whole device is lower, and the ARM chip on the core plate mainly generates heat easily, and core plate carries out the heat exchange through the cooling pad and upper cover and can satisfy the environment job requirement.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. the serial port-to-FDCAN bus conversion recording device not only has the function of data interface conversion, but also has the functions of data recording, inquiring and downloading, so that data analysis and fault problem searching are facilitated, and the requirements of increasingly complex application scenes are met;

2. the serial port-to-FDCAN bus conversion recording device has rich interfaces and strong environment adaptability, and is convenient for a user to carry out integrated application;

3. the internal circuit is effectively protected through the power protection unit and the interface protection circuits, the internal circuit is prevented from being damaged, and reliability is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic external structural diagram of the present invention;

fig. 3 is a schematic diagram of the external structure of the present invention;

FIG. 4 is a block diagram of a carrier plate;

FIG. 5 is a block diagram of a power protection unit;

fig. 6 is a block diagram of a core board.

The test device comprises a shell 1, a power interface 11, a switch 12, an indicator light 13, a carrier plate 2, a serial interface 21, an FDCAN interface 22, a test interface 23, a core board 3 and a double-row pin base 4.

Detailed Description

The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without conflicting aspects.

The embodiment of the application provides a serial port-to-FDCAN bus conversion recording device, solves the problem of single function of a conventional data interface conversion device in the prior art, has the functions of data recording and checking, and is convenient for data analysis and fault problem finding to meet the requirements of increasingly complex application scenes.

In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:

example (b):

fig. 1-6 show a serial port to FDCAN bus conversion recording device.

As shown in fig. 1, a serial port to FDCAN bus conversion recording device includes a casing 1, a carrier plate 2 and a core plate 3, which are arranged in the casing, wherein the core plate and the carrier plate are interconnected by means of a double-row pin base 4;

as shown in fig. 1 and 2, the casing is provided with a power interface 11, a switch 12 and an indicator light 13; as shown in fig. 1-4, the carrier board is provided with 4

serial interfaces

21, 1

FDCAN interface

22, 1

test interface

23 and 1 SD card interface, and an SD card is arranged in the SD card interface, wherein the serial interface, the FDCAN interface and the test interface respectively extend out of the housing to be conveniently connected with the outside; the RS232 protection circuit and the FDCAN protection circuit are correspondingly connected with the serial interface and the FDCAN interface respectively, and the RS232 protection circuit and the FDCAN protection circuit are used for realizing interface conversion and magnetic isolation functions; the carrier plate is also provided with a WIFI expansion interface for realizing wireless network interface expansion, a network interface for realizing network interface function and a protection circuit; the WIFI expansion interface and the test interface are used for inquiring or downloading data in the SD card;

as shown in fig. 6, the core board includes an ARM chip, a Flash chip, an SDRAM chip, an EEPROM chip, and an 10/100M network transceiver chip, and the Flash chip, the SDRAM chip, the EEPROM chip, and the 10/100M network transceiver chip are respectively connected to the ARM chip; the ARM chip receives and distributes serial port or FDCAN port data and stores the data to the SD card at the same time, so that the whole process monitoring record of the data is realized; the SDRAM chip is used for realizing the expansion of capacity, thereby meeting the application requirements of a large amount of memory, such as the realization of a TCP/IP protocol; the EEPROM chip of the IIC interface is used for realizing the storage function of small-capacity or characteristic data of a user; the 10/100M network transceiver chip is matched with an MAC controller in the ARM, and network function expansion is realized through a network interface and a protection circuit of the carrier plate; the pilot lamp is emitting diode, and ARM chip lug connection controls the bright of pilot lamp and goes out to show ARM internal state, the user of being convenient for discerns the operating condition of inside.

Wherein, ARM chip on nuclear core plate is the main piece that generates heat, is provided with the cooling pad between nuclear core plate and casing, and nuclear core plate carries out the heat exchange through cooling pad and casing and can satisfy environment job requirement.

Optionally, the ARM chip is an STM32H7 series ARM chip supporting a high-speed serial port baud rate.

The technical scheme in the embodiment of the application at least has the following technical effects or advantages:

1. the serial port-to-FDCAN bus conversion recording device has the functions of data interface conversion, data recording, query and downloading through the internal program design of an ARM chip, and is convenient for data analysis and fault problem search so as to meet the requirements of increasingly complex application scenes;

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a serial ports changes FDCAN bus conversion recorder which characterized in that includes:

2. The serial port-to-FDCAN bus conversion recording device according to claim 1, wherein: the carrier plate is further provided with a test interface, and the test interface is used for inquiring or downloading the data in the SD card.

3. The serial port-to-FDCAN bus conversion recording device according to claim 2, wherein: the core board further comprises an SDRAM chip, and the SDRAM chip is connected with the ARM chip.

4. The serial port-to-FDCAN bus conversion recording device according to claim 3, wherein: the core board further comprises an EEPROM chip, and the EEPROM chip is connected with the ARM chip.

5. The serial port-to-FDCAN bus conversion recording device according to claim 4, characterized in that: the core board further comprises a network transceiver chip, the network transceiver chip is connected with the ARM chip, and the carrier board is correspondingly provided with a network interface and a protection circuit.

6. The serial port-to-FDCAN bus conversion recording device according to any one of claims 2 to 5, characterized in that: the carrier plate is provided with a power protection unit, the power protection unit is used for connecting an external power supply, and the power protection unit comprises an EMI filter, a reverse connection protection circuit and an overvoltage protection circuit which are sequentially connected.

7. The serial port-to-FDCAN bus conversion recording device according to claim 6, characterized in that: the carrier plate is further provided with an RS232 protection circuit and an FDCAN protection circuit, the RS232 protection circuit and the FDCAN protection circuit are correspondingly connected with the serial interface and the FDCAN interface respectively, and the RS232 protection circuit and the FDCAN protection circuit are used for realizing interface conversion and magnetic isolation functions.

8. The serial port-to-FDCAN bus conversion recording device according to claim 2, wherein: still include the casing, be provided with power source and switch on the casing, support plate, nuclear core plate all set up in the casing, serial interface, FDCAN interface and test interface extend to respectively outside the casing.

9. The serial port-to-FDCAN bus conversion recording device according to claim 8, wherein: the shell is provided with an indicator light, and the indicator light is connected with the ARM chip and controlled by the ARM chip.