CN201263157Y - Minitype embedded network module for transferring UART interface to CAN-bus - Google Patents
Minitype embedded network module for transferring UART interface to CAN-bus Download PDFInfo
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- CN201263157Y CN201263157Y CNU2008201888797U CN200820188879U CN201263157Y CN 201263157 Y CN201263157 Y CN 201263157Y CN U2008201888797 U CNU2008201888797 U CN U2008201888797U CN 200820188879 U CN200820188879 U CN 200820188879U CN 201263157 Y CN201263157 Y CN 201263157Y
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Abstract
The utility model discloses a miniature embedded UART interface and CAN-bus network switching module, relates to the field of fast connecting a UART interface with a CAN-bus network and aims at providing a miniature embedded UART interface and CAN-bus network switching module which not only can quickly and reliably switch the data of the UART interface and the CAN-bus network, but also is characterized by small volume, low power consumption and the like. The design discloses a miniature embedded UART interface and CAN-bus network switching module which essentially comprises a main control chip, a CAN controller and a CAN transceiver; the main control chip is connected with the CAN controller and the UART interface; the improved structure lies in that the CAN-bus network is connected with the main control chip in an isolated protecting way; the main control chip adopts an MCU with a universal I/O interface and is internally provided with an EEPROM; the module is internally provided with the CAN controller and the CAN transceiver which are encapsulated in the module with the volume of about 4cm<3>; the proposal does not need SDRAM and FLASH memorizers with expanded capacity and has high integration degree and low power consumption compared with the technical proposal in respect of multiple chips.
Description
Technical field
The utility model relates to the UART interface and connects the CAN-bus network field fast, and a kind of low profile edge UART interface that a kind of technical scheme of saying so more specifically is easy changes the CAN-bus mixed-media network modules mixed-media.
Background technology
In China, the use of CAN-bus network is very extensive at present, and the CAN-bus network be after the trend of Industry Control local area network (LAN) development.Current device control network uses serial communication interfaces such as RS-232, RS-485, RS-422 mostly, and original these equipment based on serial communication interface will carry out the transition to the CAN-bus network, needs to connect serial port gateway or CAN-bus serial ports modular converter.At present a lot of at all types of CAN-bus serial ports modular converter of China and serial server, serial port gateway, but they all exist volume big, problems such as technical scheme complexity are not suitable for using in that some mini-plants are inner.The present invention is primarily aimed at above phenomenon, releases the CAN-bus serial ports modular converter that a kind of volume is small and exquisite, be convenient to embed.
The utility model content
The purpose of this utility model is, both providing to change the rapid and reliable conversion of CAN-bus network to the UART interface, and the embedded type C AN with characteristics such as small size, low-power consumption, technical scheme are easy changes the UART interface module.
The utility model is achieved through the following technical solutions above-mentioned purpose.
The design discloses a kind of low profile edge UART interface changes the CAN-bus Network Interface Module; mainly comprise main control chip, CAN controller, CAN transceiver; main control chip is connected with the UART interface with the CAN controller; the structure of its improvement be the CAN-bus network with main control chip between be connected by the insulation blocking measure; main control chip adopts the MCU that has general purpose I/O interface, this built-in chip type EEPROM, built-in CAN controller of module and CAN transceiver; meet the CAN2.0 agreement, be encapsulated in about 4cm
3In the module of volume, pin meets the IC international standard.This programme need not outer expansion capacity SDRAM and FLASH memory, relative multicore chip technology scheme, and integrated level is higher, and energy consumption is lower.
Be connected by the insulation blocking measure between relatively unique is CAN-bus network and the main control chip.Overall structure adopts the sealing filling process, laser marking, and production procedure meets the RoHS instruction.
The technical solution of the utility model is: a kind of low profile edge UART interface changes the CAN-bus mixed-media network modules mixed-media; comprise main control chip (1), CAN controller (2), coupling circuit (3) and CAN transceiver (4) that the order polyphone connects; it is characterized in that: also comprise DC-DC power isolation circuit (5) and esd bus protection (6), wherein:
DC-DC power isolation circuit (5) provides the isolated from power between CAN controller (2) and the CAN transceiver (4), and former limit is connected to CAN controller (2), secondary is connected to CAN transceiver (4);
Esd bus protection (6) provides CAN-bus network overvoltage protection and antistatic protection function, is connected to the CAN-bus network terminal.
The embedded MCU controller of the main control chip of described module (1) (11), USB (universal serial bus) (12) and eeprom memory (13).
Adopt the mode transmission of digital signals of one of photoelectricity coupling isolation, electromagnetic coupled isolation and capacitive coupling isolation between the CAN controller (2) of described module and the CAN transceiver (4).
The DC-DC power isolation circuit (5) of described module is connected to photoelectricity coupling isolation, electromagnetic coupled is isolated and capacitive coupling buffer circuit (3), and isolated from power is provided.
The outside level transferring chip that connects of the USB (universal serial bus) of described module (12) can connect serial communication interfaces such as RS-232, RS-485 and RS-422.
The main control chip of described module (1) adopts the high speed main control chip.
The UART of described module receives and interrupts transmitting the processing of CAN message, and the UART interface is connected to the CAN-bus network and sends the CAN message.
The CAN of described module receives and interrupts transmitting the UART data processing, and the CAN-bus network is connected to the UART interface and receives the CAN message.
The effect of invention
With main control chip, CAN controller, CAN transceiver, and CAN bus protection device is in one, the about 4cm of whole module package size
3In the module of volume, realized also that simultaneously the UART interface changes the high speed of the data of CAN-bus network, big capacity conversion, also has functions such as isolation, bus protection.
The simple declaration of accompanying drawing and accompanying drawing
Accompanying drawing 1 is the construction module figure of the technical program;
Accompanying drawing 2 is the hardware block diagram of the technical program;
Accompanying drawing 3 is the hardware circuit diagram of photoelectric coupling technology scheme;
Accompanying drawing 4 is the hardware circuit diagram of electromagnetic coupled technical scheme;
Accompanying drawing 5 is the hardware circuit diagram of capacitive coupling technical scheme;
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of as shown in Figure 1 low profile edge UART interface changes the CAN-bus mixed-media network modules mixed-media, and this module mainly comprises main control chip (1), CAN controller (2), coupling circuit (3), CAN transceiver (4) composition.The embedded MCU controller of main control chip (1) (11), USB (universal serial bus) (12) and eeprom memory (13), main control chip (1) adopts the high speed main control chip, is connected with CAN controller (2), and USB (universal serial bus) (12) is connected with UART (7); CAN transmitting-receiving (4) device is connected with CAN-bus (8) network; Be connected by coupling circuit (3), DC-DC power isolation circuit (5) between CAN controller (2) and the CAN transceiver (4), the CAN-bus network has overvoltage, electrostatic protection function.Finish the exchange of data between MCU controller (11) and the CAN controller (2) by USB (universal serial bus) (12).The built-in UART of MCU controller (11) itself, can be external the serial level transferring chip UART that connects serial line interface such as RS-232, RS-485, RS-422 and directly connect the master cpu of outside serial equipment.
Accompanying drawing 3 is the hardware circuit diagram of electromagnetic coupled technical scheme.Different with the photoelectric coupling technology scheme shown in the accompanying drawing 2, the advantage of inductance coupling high technology is the common mode difference and the differential transfer characteristic that possible exist, the well-designed permission noise and the signal frequency of transformer are overlapping, can present the low differential impedance of high common code impedance of noise and signal, another advantage is, the signal energy transmission can be nearly 100% efficient, thereby makes the low-power consumption isolator become possibility.
Accompanying drawing 4 is the hardware circuit diagram of capacitive coupling technical scheme.Different with the photoelectric coupling technology scheme shown in the accompanying drawing 2, the benefit of using electric capacity to isolate is, the high efficiency aspect size and power transfer, and there is better effect the immunity to interference aspect in magnetic field, and power consumption is lower.
Claims (7)
1. a low profile edge UART interface changes the CAN-bus mixed-media network modules mixed-media; comprise main control chip (1), CAN controller (2), coupling circuit (3) and CAN transceiver (4) that the order polyphone connects; it is characterized in that: also comprise DC-DC power isolation circuit (5) and esd bus protection (6), wherein:
DC-DC power isolation circuit (5) provides the isolated from power between CAN controller (2) and the CAN transceiver (4), and former limit is connected to CAN controller (2), secondary is connected to CAN transceiver (4);
Esd bus protection (6) provides CAN-bus network overvoltage protection and antistatic protection function, is connected to the CAN-bus network terminal.
2. a kind of low profile edge UART interface according to claim 1 changes the CAN-bus mixed-media network modules mixed-media, it is characterized in that: the embedded MCU controller of the main control chip of described module (1) (11), USB (universal serial bus) (12) and eeprom memory (13).
3. a kind of low profile edge UART interface commentaries on classics CAN-bus mixed-media network modules mixed-media according to claim 1 is characterized in that: the mode transmission of digital signals that adopts one of photoelectricity coupling isolation, electromagnetic coupled isolation and capacitive coupling isolation between the CAN controller (2) of described module and the CAN transceiver (4).
4. a kind of low profile edge UART interface according to claim 3 changes the CAN-bus mixed-media network modules mixed-media, it is characterized in that: DC-DC power isolation circuit (5) is connected to photoelectricity coupling isolation, electromagnetic coupled is isolated and capacitive coupling buffer circuit (3), and isolated from power is provided.
5. a kind of low profile edge UART interface according to claim 2 changes the CAN-bus mixed-media network modules mixed-media, it is characterized in that: the outside level transferring chip that connects of described USB (universal serial bus) (12) can connect serial communication interfaces such as RS-232, RS-485 and RS-422.
6. a kind of low profile edge UART interface according to claim 1 changes the CAN-bus mixed-media network modules mixed-media, it is characterized in that: described main control chip (1) adopts the high speed main control chip.
7. a kind of low profile edge UART interface according to claim 2 changes the CAN-bus mixed-media network modules mixed-media, it is characterized in that: UART receives and interrupts transmitting the processing of CAN message, and the UART interface is connected to the CAN-bus network and sends the CAN message.8. a kind of low profile edge UART interface according to claim 2 changes the CAN-bus mixed-media network modules mixed-media, it is characterized in that: CAN receives and interrupts transmitting the UART data processing, and the CAN-bus network is connected to the UART interface and receives the CAN message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201888797U CN201263157Y (en) | 2008-08-20 | 2008-08-20 | Minitype embedded network module for transferring UART interface to CAN-bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201888797U CN201263157Y (en) | 2008-08-20 | 2008-08-20 | Minitype embedded network module for transferring UART interface to CAN-bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201263157Y true CN201263157Y (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201888797U Expired - Lifetime CN201263157Y (en) | 2008-08-20 | 2008-08-20 | Minitype embedded network module for transferring UART interface to CAN-bus |
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| CN (1) | CN201263157Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551222A (en) * | 2016-01-28 | 2016-05-04 | 辽宁省交通规划设计院公路养护技术研发中心 | Embedded bridge health monitoring system |
| CN106708766A (en) * | 2017-01-17 | 2017-05-24 | 广州致远电子股份有限公司 | Protocol conversion isolated interface module |
| CN106789516A (en) * | 2017-01-06 | 2017-05-31 | 四川埃姆克伺服科技有限公司 | A kind of CAN and 422/485 common interface circuit |
| CN113448898A (en) * | 2021-08-30 | 2021-09-28 | 成都万创科技股份有限公司 | Device and method for realizing multifunctional low-speed IO by using UART |
-
2008
- 2008-08-20 CN CNU2008201888797U patent/CN201263157Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551222A (en) * | 2016-01-28 | 2016-05-04 | 辽宁省交通规划设计院公路养护技术研发中心 | Embedded bridge health monitoring system |
| CN106789516A (en) * | 2017-01-06 | 2017-05-31 | 四川埃姆克伺服科技有限公司 | A kind of CAN and 422/485 common interface circuit |
| CN106708766A (en) * | 2017-01-17 | 2017-05-24 | 广州致远电子股份有限公司 | Protocol conversion isolated interface module |
| CN113448898A (en) * | 2021-08-30 | 2021-09-28 | 成都万创科技股份有限公司 | Device and method for realizing multifunctional low-speed IO by using UART |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGZHOU ZLG MCU TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUANGZHOU ZHIYUAN ELECTRONICS CO., LTD. Effective date: 20120705 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510660 HOUSE 2, BUILDING 3, HUANGZHOU INDUSTRY DISTRICT, CHEBEI ROAD, TIANHE DISTRICT, GUANGZHOU CITY, GUANGDONG PROVINCE TO: 510000 GUANGZHOU, GUANGDONG PROVINCE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 2 building, 3 floor, Huang Zhou Industrial Zone, Che Po Road, Guangdong, Guangzhou, Tianhe District 510660, China Patentee after: GUANGZHOU ZHIYUAN ELECTRONICS Co.,Ltd. Address before: 2 building, 3 floor, Huang Zhou Industrial Zone, Che Po Road, Guangdong, Guangzhou, Tianhe District 510660, China Patentee before: GUANGZHOU ZHIYUAN ELECTRONICS Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120705 Address after: 510000 Guangdong city of Guangzhou province Tianhe District No. 1039 Room 303 third Pu Lu Patentee after: Guangzhou zhouligong monolithic Technology Co.,Ltd. Address before: 2 building, 3 floor, Huang Zhou Industrial Zone, Che Po Road, Guangdong, Guangzhou, Tianhe District 510660, China Patentee before: GUANGZHOU ZHIYUAN ELECTRONICS Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20090624 |
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| CX01 | Expiry of patent term |