CN207251635U - A kind of embedded ethernet interface system - Google Patents
A kind of embedded ethernet interface system Download PDFInfo
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- CN207251635U CN207251635U CN201721376358.XU CN201721376358U CN207251635U CN 207251635 U CN207251635 U CN 207251635U CN 201721376358 U CN201721376358 U CN 201721376358U CN 207251635 U CN207251635 U CN 207251635U
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- ethernet interface
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Abstract
The utility model provides a kind of embedded ethernet interface system, including serial interface module, single chip processing module, memory module and network controller module；The single chip processing module is connected by the serial interface module with external sensor, the single chip processing module carries out data interaction with the memory module, the single chip processing module is connected by latch with the network controller module, and the network controller module connects Ethernet by RJ45 interfaces.The utility model is based on 8 microcontroller STC89C52 and network communication controller RTL8019AS, transmits data using Ethernet protocol, simple in structure, of low cost, low in energy consumption, stability and good reliability, are with good expansibility.
Description
Technical field
Internet of Things control technology field is the utility model is related to, more particularly to a kind of embedded ethernet interface system.
Background technology
Computer and network technologies develop rapidly, have triggered the technological revolution that control field is deep.Control system architecture
Develop to networking, open direction be the development of control system technology main trend.Past is substantial amounts of vast as the open sea by 8/16
The embedded device of position microcontroller, such as instrument and meter, data acquisition and display, process control, industrial automation, smart home
Real-time application, arrived enjoyment network when an opportunity arises.They comply with " network by as the development fertile soil of Ethernet
The spring tide that service " is extended to " network application ".
Current most of embedded systems, using microcontroller as core, are set also in the stage being used alone with some controls
Certain function is realized in standby cooperation.If embedded system is connectable to Ethernet this information flow channel, can be square
Just information, is sent to any one place in the world cheaply, this will form collection management and is controlled in integral distributed network
System.
Utility model content
(1) technical problem solved
To solve the above-mentioned problems, the utility model provides a kind of embedded ethernet interface system, based on 8 monolithics
Machine STC89C52 and network communication controller RTL8019AS, data are transmitted using Ethernet protocol.
(2) technical solution
A kind of embedded ethernet interface system, including serial interface module, single chip processing module, memory module and
Network controller module；The single chip processing module is connected by the serial interface module with external sensor, described
Single chip processing module and the memory module carry out data interaction, the single chip processing module by latch with it is described
Network controller module is connected, and the network controller module connects Ethernet by RJ45 interfaces.
Further, the serial interface module includes electrical level transferring chip, connector, the first~the 5th capacitance, wherein
The electrical level transferring chip is standard RS232 interface chip MAX232, and the connector is 9 needle connectors.
Further, the single chip processing module selects microcontroller STC89C52.
Further, the latch is 8 latch 74LS373 and 16 latch 74LCX16373.
Further, the memory module includes eeprom memory, the first light emitting diode, the second light emitting diode
With the first~the 4th resistance, wherein the eeprom memory select AT24C512.
Further, the network controller module includes ethernet communication control chip, RJ45 interfaces, the 6th~the tenth
One capacitance and the 5th~the 8th resistance, wherein the ethernet communication control chip selects RTL8019AS.
Preferably, the ethernet communication control chip is connected by external separation filter with the RJ45 interfaces
Connect, the external separation filter includes the first separation filter and the second separation filter.
(3) beneficial effect
The utility model provides a kind of embedded ethernet interface system, based on 8 microcontroller STC89C52 and network
Communication controler RTL8019AS, using Ethernet protocol transmit data, it is simple in structure, it is of low cost, it is low in energy consumption, stability and
Good reliability, is with good expansibility.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of embedded ethernet interface system involved by the utility model.
Fig. 2 is a kind of serial interface module circuit theory of embedded ethernet interface system involved by the utility model
Figure.
Fig. 3 is a kind of other module circuit schematics of embedded ethernet interface system involved by the utility model.
Embodiment
The embodiment involved by the utility model is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of embedded ethernet interface system, including serial interface module, single chip processing module, deposit
Memory modules and network controller module；Single chip processing module is connected by serial interface module with external sensor, single
Piece machine processing module carries out data interaction with memory module, and single chip processing module passes through latch and network controller module
It is connected, network controller module connects Ethernet by RJ45 interfaces.
As shown in Fig. 2, serial interface module includes electrical level transferring chip U1, connector J1, wherein capacitance C1~C5, level
Conversion chip U1 is 9 needle connectors for standard RS232 interface chip MAX232, connector J1.Due to RS232 standard for serial communication
Interface is easy to use, and wiring is few and transmission range is up to 15m, it is sufficient to meets the technical requirements of sensor monitoring system, therefore
Select the serial communication mode of RS232.It is Transistor-Transistor Logic level with input and output since sensor serial ports is RS232 standard interfaces
Microcontroller is inconsistent on interface specification, therefore the conversion of Transistor-Transistor Logic level to RS232 level uses MAX232 standard RS232 interfaces
Chip, the chip can realize the electricity of RS232 interface logical one (- 15~3V) and logical zero (3~15V) with univoltage+5V
Flat turn is changed.The RxD mouths of microcontroller are serial input terminal, and TxD mouthfuls are serial output terminal.
As shown in figure 3, single chip processing module selects microcontroller STC89C52, it is of new generation high speed, low-power consumption, superpower resists
The Strong MCU of interference, 3.3~5.5V of operating voltage, for operating frequency range in 0~40MHz, on piece integrates 512 bytes
RAM, has 32 universaling I/O ports.
Latch is 8 latch 74LS373 and 16 latch 74LCX16373.Latch is a kind of to impulse level
Sensitive storage unit circuit, they can change state under the effect of specific input pulse level.Latch, be exactly that signal is temporary
Deposit to maintain certain level state.The main effect of latch is caching, and it is outer with a slow speed secondly to complete the controller of high speed
If asynchronous problem, be thirdly to solve the problems, such as driving, be finally to solve one I/O mouthfuls to export asking of can also inputting
Topic.Latch is the input using Automatic level control data.
Memory module include eeprom memory U6, Light-emitting diode LED 1, Light-emitting diode LED 2 and resistance R1~
R4, wherein eeprom memory U6 select AT24C512.AT24C512 is 64KB EEPROM, is mainly used to preserve matching somebody with somebody for 89C52
Confidence ceases, such as IP address, MAC Address.Parameter so can be flexibly and easily changed, to adapt to varying environment, while is also examined
Consider later extension.
Network controller module includes ethernet communication control chip U5, RJ45 interface U7, capacitance C6~C11 and resistance R5
~R8, wherein ethernet communication control chip U5 select RTL8019AS.RTS8019AS is a kind of full duplex of high integration
10Mbps ethernet control chips, realize the MAC layer repertoire based on Ethernet protocol, and the SRAM of built-in 16KB, double DMA lead to
Road and FIFO complete reception and the sending function of data packet.In this Interface design, using wire jumper pattern (65 foot JP are set to height),
Hard configuration RTL8019AS is 8 bit patterns, using RTL8019AS low 5 bit address line A0~A4 and least-significant byte data cable D0~
D7。
P2.0~P2.4 feet of 89C52P2 mouthfuls of microcontroller are used as address wire by 8 latch 74LS373 and are connected
The low 5 bit address line of RTL8019AS, RD feet and WR feet distribution connection RTL8019AS reading and writing sequential control foot IORB feet and
IOWB feet, P0 mouthfuls of P0.0~P0.7 feet are used as low the 8 of data cable connection RTL8019AS by 16 latch 74LCX16373
Position datawire.
Preferably, ethernet communication control chip U5 is connected by external separation filter with RJ45 interfaces U7, outside
Connecing separation filter includes separation filter F1 and separation filter F2.RTL8019AS with STC89C52 in addition to being connected, also by it
4 pins TPOUT+, TPOUT-, TPIN+, TPIN- of network transceivers are by external separation filter F1 and F2 with ether
Net is connected, and is to improve the antijamming capability of network service using separation filter F1 and F2.
The utility model provides a kind of embedded ethernet interface system, based on 8 microcontroller STC89C52 and network
Communication controler RTL8019AS, using Ethernet protocol transmit data, it is simple in structure, it is of low cost, it is low in energy consumption, stability and
Good reliability, is with good expansibility.
Embodiment described above is only that the preferred embodiment of the utility model is described, not to this practicality
New spirit and scope are defined.Without departing from the design concept of the present utility model, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, should fall within the protection scope of the present utility model, this reality
With new claimed technology contents, all record in detail in the claims.
Claims (7)
- A kind of 1. embedded ethernet interface system, it is characterised in that：Including serial interface module, single chip processing module, deposit Memory modules and network controller module；The single chip processing module passes through the serial interface module and external sensor phase Connection, the single chip processing module carry out data interaction with the memory module, and the single chip processing module passes through lock Storage is connected with the network controller module, and the network controller module connects Ethernet by RJ45 interfaces.
- A kind of 2. embedded ethernet interface system according to claim 1, it is characterised in that：The serial interface module Including electrical level transferring chip, connector, the first~the 5th capacitance, wherein the electrical level transferring chip is standard RS232 interface core Piece MAX232, the connector are 9 needle connectors.
- A kind of 3. embedded ethernet interface system according to claim 1, it is characterised in that：The microcontroller handles mould Block selects microcontroller STC89C52.
- A kind of 4. embedded ethernet interface system according to claim 1, it is characterised in that：The latch is 8 Latch 74LS373 and 16 latch 74LCX16373.
- A kind of 5. embedded ethernet interface system according to claim 1, it is characterised in that：The memory module bag Eeprom memory, the first light emitting diode, the second light emitting diode and the first~the 4th resistance are included, wherein the EEPROM is deposited Reservoir selects AT24C512.
- A kind of 6. embedded ethernet interface system according to claim 1, it is characterised in that：The network controller mould Block includes ethernet communication control chip, RJ45 interfaces, the 6th~the 11st capacitance and the 5th~the 8th resistance, wherein it is described with Too Network Communication control chip selects RTL8019AS.
- A kind of 7. embedded ethernet interface system according to claim 6, it is characterised in that：The ethernet communication control Coremaking piece is connected by external separation filter with the RJ45 interfaces, and the external separation filter includes the first isolation and filters Ripple device and the second separation filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376358.XU CN207251635U (en) | 2017-10-24 | 2017-10-24 | A kind of embedded ethernet interface system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376358.XU CN207251635U (en) | 2017-10-24 | 2017-10-24 | A kind of embedded ethernet interface system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251635U true CN207251635U (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721376358.XU Active CN207251635U (en) | 2017-10-24 | 2017-10-24 | A kind of embedded ethernet interface system |
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| Country | Link |
|---|---|
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2017
- 2017-10-24 CN CN201721376358.XU patent/CN207251635U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181220 Address after: 519090 2/F, 5 Building, Guangdong Vocational College of Science and Technology Training Building, South of Zhuhai Avenue, Jinwan District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Yin Er Science and Technology Ltd. Address before: 313000 208, room 2, 212 Hongqi Road, Wuxing District, Huzhou, Zhejiang. Patentee before: Huzhou inspiration Electronic Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200722 Address after: Room 402, block B, building 5, Depu Wuhe Enterprise Park, No.1 and No.3 luoluotang Road, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: Hunan Zhongguang Huizhi Information Technology Co., Ltd Address before: 519090 2/F, 5 Building, Guangdong Vocational College of Science and Technology Training Building, South of Zhuhai Avenue, Jinwan District, Zhuhai City, Guangdong Province Patentee before: ZHUHAI YINER SCIENCE & TECHNOLOGIES Inc. |