CN106708212A - Constant-voltage two-serial-port server - Google Patents
Constant-voltage two-serial-port server Download PDFInfo
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- CN106708212A CN106708212A CN201611204066.8A CN201611204066A CN106708212A CN 106708212 A CN106708212 A CN 106708212A CN 201611204066 A CN201611204066 A CN 201611204066A CN 106708212 A CN106708212 A CN 106708212A
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- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 5
- 230000015654 memory Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- LHMQDVIHBXWNII-UHFFFAOYSA-N 3-amino-4-methoxy-n-phenylbenzamide Chemical compound C1=C(N)C(OC)=CC=C1C(=O)NC1=CC=CC=C1 LHMQDVIHBXWNII-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a constant-voltage two-serial-port server. The constant-voltage two-serial-port server comprises a constant-voltage power source, a microprocessor, a network processing circuit, a serial port expander circuit and a serial port interface circuit; the constant-voltage power source is configured to be connected to the microprocessor so as to convert input voltage into constant voltage, and the constant voltage is output to the microprocessor; the serial port expander circuit expands a serial port interface of the microprocessor into two ports and is configured to be connected to the serial port interface circuit, and a terminal is connected to the serial port interface circuit; the microprocessor is configured to be connected to the serial port expander circuit and the network processing circuit so as to execute conversion between a serial port signal and an Ethernet access signal and perform bidirectional transmission. Through the constant-voltage two-serial-port server, two serial port devices are networked, and information of the serial port devices is collected, analyzed and processed.
Description
Technical Field
The invention relates to a communication serial port, in particular to a constant-voltage two-serial-port server.
Background
With the development of science and technology and cloud computing technology, in addition, the development of equipment intellectualization, more and more equipment need to access a network through a serial server. For a serial server, the two keywords are serial and network. The network is divided into an internal network and an external network, wherein the internal network generally refers to Ethernet, and the external network refers to Internet, which is an effective means for carrying out communication in the global range. Before the prevalence of networks, data exchange between devices and computers was generally achieved through simple RS 232; RS485 (up to 1000 more meters) can also be used if long-distance transmission is required. With the development of networks and modern information technology, several demands for devices are gradually coming up: 1 some applications require remote monitoring of equipment distributed around the world. 2. In the applications such as machine room monitoring, self-service bank system communication, office building automatic control system and the like, complete network wiring is provided, and whether the existing network facilities can be utilized to realize the communication of equipment or not can be realized. 3. For the RS232 interface, one serial port of the PC can only be connected with one serial port device, if a plurality of devices need to be connected, the original serial port scheme is not easy to expand, and the network does not have the problem.
For the above reasons, it is necessary to connect the device to the network. However, there are already thousands of original serial devices, and it is not obvious that mass modification of these devices is all at once.
Disclosure of Invention
The invention aims to provide a constant-voltage two-serial-port server which realizes the networking of 4 serial-port devices and realizes the acquisition, analysis and processing of information of the serial-port devices.
In order to achieve the above object, the present invention provides a constant voltage two-serial server, comprising: the system comprises a constant voltage power supply, a microprocessor, a network processing circuit, a serial port expansion circuit and a serial port interface circuit; wherein the constant voltage power supply is configured to be connected to the microprocessor to convert an input voltage into a constant voltage and output the constant voltage to the microprocessor; the serial port expansion circuit expands a serial port interface of the microprocessor into two ports, the serial port expansion circuit is configured to be connected to the serial port interface circuit, and a terminal is connected to the serial port interface circuit; the microprocessor is configured to be respectively connected to the serial port expansion circuit and the network processing circuit so as to execute conversion of a serial port signal and a network port signal and perform bidirectional transmission.
Preferably, the chip model of the constant voltage power supply is LM2574 hvn.
Preferably, the Vin port of the LM2574hvn is connected with a voltage of 7-36V, and the OUT port of the LM2574hvn outputs a voltage of 3.3V.
Preferably, the microprocessor is of type S3C 2440.
Preferably, the serial port expansion circuit includes:
a chip with model number ST16C5544 and a peripheral expansion element, wherein the peripheral expansion circuit is connected with the chip with model number ST16C 5544.
Preferably, the serial interface circuit includes:
the chip with the model number SN65HVD3082 and the interface element are connected to the chip with the model number SN65HVD3082 and connected to the terminal.
Preferably, the eight-serial server further comprises:
and the CPLD serial port control module is arranged between the processor unit and the serial interface module and is used for controlling the receiving and sending of serial port data.
Preferably, a plurality of RS232 interfaces and a plurality of RS485 interfaces are arranged in the serial interface module.
Preferably, a network port isolation protection circuit is arranged between the microprocessor and the network processing circuit.
Through the implementation mode, the invention has rich operation modes, meets the application requirements of different industries, has the protection effect on the serial port in a complex environment, can realize power supply for multi-voltage input, and prevents a circuit from being burnt out. The two serial port servers of this constant voltage realize 2 serial port equipment networking, realize the acquisition analysis processing to serial port equipment's information.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a block diagram illustrating a constant-voltage two-serial server according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a constant-voltage two-serial-port server, which comprises: the system comprises a constant voltage power supply, a microprocessor, a network processing circuit, a serial port expansion circuit and a serial port interface circuit; wherein the constant voltage power supply is configured to be connected to the microprocessor to convert an input voltage into a constant voltage and output the constant voltage to the microprocessor; the serial port expansion circuit expands a serial port interface of the microprocessor into two ports, the serial port expansion circuit is configured to be connected to the serial port interface circuit, and a terminal is connected to the serial port interface circuit; the microprocessor is configured to be respectively connected to the serial port expansion circuit and the network processing circuit so as to execute conversion of a serial port signal and a network port signal and perform bidirectional transmission.
Through the embodiment, the invention can realize the networking of 2 serial devices in use, and realize the acquisition, analysis and processing of the information of the serial devices. The invention has rich operation modes, meets the application of different industries, and has the function of protecting the serial port in a complex environment.
In order to realize the effect of constant voltage, the chip model of the constant voltage power supply is LM2574 hvn.
In the invention, in order to realize constant voltage control and prevent the chip from being damaged, the Vin port of the LM2574hvn is connected with 7-36V voltage, and the OUT port of the LM2574hvn outputs 3.3V voltage.
In one embodiment of the present invention, the microprocessor is model number S3C 2440. The S3C2440 is characterized in that the processor core is a RISC processor designed by Advanced RISC Machines (ARM) with 16/32 bits of ARM 920T. ARM920T implements the MMU, AMBA bus, and Harvard architecture cache architectures. This architecture has a separate 16KB instruction cache and 16KB data cache. Each consisting of lines having a length of 8 words. By providing a complete set of general purpose system peripherals, the S3C2440 reduces overall system cost and eliminates the need to configure additional components. S3C2440 adopts 32-bit RISC (reduced instruction set) architecture, and a large number of functional units are integrated on the chip: the internal MMU (memory management unit), the 16KB data Cache and the 16KB instruction Cache, the advanced controller bus (AMBA), the external memory control bus, 4-path DMA, 3-path UART, 117I/O ports, 2 USB host interfaces, 1 USB device interface, 2-path SPI, and the S3C2440 processor has a plurality of power supply control modes: the system can run in standard, slow, dormant and power-down modes, can run at the highest frequency of 400MHz, and supports systems such as WinCE, Linux, VxWorks and the like. S3C2440 can address 1G byte address space, total 8 BANKs, the data bus of each BANK is 8/16/32 bits, the first 6 memory BANKs are connected for ROM and SRAM. The latter two memories BANK are used for ROM, SRAM and SDRAM. Different types of ROM (NOR/NANDFLASH, EEPROM, etc.) are supported during starting, and SDRAM automatically refreshes in a power-down mode. The processor is particularly suitable for the fields of information household appliances, industrial control, handheld equipment, intelligent phones, mobile terminals and the like.
In a specific embodiment of the present invention, the serial port expansion circuit includes:
a chip with model number ST16C5544 and a peripheral expansion element, wherein the peripheral expansion circuit is connected with the chip with model number ST16C 5544. ST16C554 contains 2 asynchronous communication units (AEPs), corresponding to 2 16C 550. Each path of ACE can receive serial data of peripheral equipment, convert the serial data into parallel data for CPU, and convert the parallel data of CPU into serial data for peripheral use.
In a specific embodiment of the present invention, the serial interface circuit may include:
the chip with the model number SN65HVD3082 and the interface element are connected to the chip with the model number SN65HVD3082 and connected to the terminal.
In a specific embodiment of the present invention, the eight-serial server may further include:
and the CPLD serial port control module is arranged between the processor unit and the serial interface module and is used for controlling the receiving and sending of serial port data. EPM570, a non-volatile CPLD, is based on 0.18 micron, 6layermetal flash, with densities ranging from 240 to 2210 logical units (LE) (128 to 2210 correspond to macro cells) and 8 million non-volatile storage. The system can provide high I/O quantity, express performance, reliable accessories and other CPLD frameworks. Having a MultiVolt core, user flash blocks, and adding system programmability (ISP) while providing applications of programmable solutions such as bus bridging, I/O expansion, Power On Reset (POR) and sequence control and device configuration control. EPM570 has the following characteristics: the embedded Joint Test Action Group (JTAG) boundary scan test circuit EPM570 chip can automatically control and enable a corresponding RS232 level conversion chip and an RS485 level conversion chip in 2 paths of serial ports, thereby realizing the setting of the working mode of each serial port.
Preferably, a plurality of RS232 interfaces and a plurality of RS485 interfaces are arranged in the serial interface module.
Preferably, a network port isolation protection circuit is arranged between the microprocessor and the network processing circuit.
Of course the circuit also includes memory circuitry for storing the required data.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (9)
1. The utility model provides a two serial servers of constant voltage which characterized in that, these two serial servers of constant voltage include: the system comprises a constant voltage power supply, a microprocessor, a network processing circuit, a serial port expansion circuit and a serial port interface circuit; wherein,
the constant voltage power supply is configured to be connected to the microprocessor to convert an input voltage into a constant voltage and output the constant voltage to the microprocessor;
the serial port expansion circuit expands a serial port interface of the microprocessor into 2 ports, is configured to be connected to the serial port interface circuit, and is connected with a terminal;
the microprocessor is configured to be respectively connected to the serial port expansion circuit and the network processing circuit so as to execute conversion of a serial port signal and a network port signal and perform bidirectional transmission.
2. The constant-voltage two-serial-port server as claimed in claim 1, wherein the chip model of the constant-voltage power supply is LM2574 hvn.
3. The constant-voltage two-serial port server as claimed in claim 2, wherein the Vin port of the LM2574hvn is connected with 7-36V voltage, and the OUT port of the LM2574hvn outputs 3.3V voltage.
4. The constant-voltage two-serial-port server as claimed in claim 1, wherein the microprocessor is of a model number S3C 2440.
5. The constant-voltage two-serial-port server according to claim 1, wherein the serial port extension circuit comprises:
a chip with model number ST16C5544 and a peripheral expansion element, wherein the peripheral expansion circuit is connected with the chip with model number ST16C 5544.
6. The constant-voltage two-serial-port server according to claim 1, wherein the serial port interface circuit comprises:
the chip with the model number SN65HVD3082 and the interface element are connected to the chip with the model number SN65HVD3082 and connected to the terminal.
7. The constant-voltage two-serial-port server according to claim 1, wherein the eight-serial-port server further comprises:
and the CPLD serial port control module is arranged between the processor unit and the serial interface module and is used for controlling the receiving and sending of serial port data.
8. The constant-voltage two-serial-port server as claimed in claim 1, wherein the serial interface module is provided with a plurality of RS232 interfaces and a plurality of RS485 interfaces.
9. The constant-voltage two-serial-port server as claimed in claim 1, wherein a network port isolation protection circuit is arranged between the microprocessor and the network processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611204066.8A CN106708212A (en) | 2016-12-23 | 2016-12-23 | Constant-voltage two-serial-port server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611204066.8A CN106708212A (en) | 2016-12-23 | 2016-12-23 | Constant-voltage two-serial-port server |
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| Publication Number | Publication Date |
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| CN106708212A true CN106708212A (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611204066.8A Pending CN106708212A (en) | 2016-12-23 | 2016-12-23 | Constant-voltage two-serial-port server |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882256A (en) * | 2012-10-12 | 2013-01-16 | 广东易事特电源股份有限公司 | Uninterrupted power supply (UPS) with double-busbar charging circuit |
| WO2013050703A1 (en) * | 2011-10-07 | 2013-04-11 | Bull Sas | Computer equipment to be removably inserted into a computer cabinet and to be connected to electronic devices |
| CN203673475U (en) * | 2013-11-08 | 2014-06-25 | 安徽康海时代科技有限公司 | Serial port server |
| CN104821834A (en) * | 2015-04-07 | 2015-08-05 | 安徽康海时代科技有限公司 | Serial server |
-
2016
- 2016-12-23 CN CN201611204066.8A patent/CN106708212A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013050703A1 (en) * | 2011-10-07 | 2013-04-11 | Bull Sas | Computer equipment to be removably inserted into a computer cabinet and to be connected to electronic devices |
| CN102882256A (en) * | 2012-10-12 | 2013-01-16 | 广东易事特电源股份有限公司 | Uninterrupted power supply (UPS) with double-busbar charging circuit |
| CN203673475U (en) * | 2013-11-08 | 2014-06-25 | 安徽康海时代科技有限公司 | Serial port server |
| CN104821834A (en) * | 2015-04-07 | 2015-08-05 | 安徽康海时代科技有限公司 | Serial server |
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Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |