CN202759472U

CN202759472U - Industrial Ethernet switch

Info

Publication number: CN202759472U
Application number: CN201220444658.8U
Authority: CN
Inventors: 王石磊; 薛百华
Original assignee: Kyland Technology Co Ltd
Current assignee: Kyland Technology Co Ltd
Priority date: 2012-09-03
Filing date: 2012-09-03
Publication date: 2013-02-27
Anticipated expiration: 2022-09-03

Abstract

The utility model discloses an industrial Ethernet switch. The industrial Ethernet switch comprises a control unit, a switching unit, a clock unit and a CPLD control unit. The control unit is used for managing a MAC chip of an integrated PHY in the switching unit through a local bus, performing data communication with the MAC chip of the integrated PHY in the switching unit through a media independent interface (MII), and performing process regulation and control on the clock unit, a power supply unit and an interface unit. The switching unit receives control signals from the processor control unit, and performs data exchange through the MAC chip of the integrated PHY in the switching unit. The clock unit is used for providing needed clock signals for the MAC chip of the integrated PHY in the switching unit or a CPU chip in the processor control unit. The CPLD control unit is used for performing preprocessing on signals of a CPU pinch plate in the processor control unit. The industrial Ethernet switch overcomes shortcomings of complicated design and relatively high cost of conventional switches.

Description

A kind of industrial ethernet switch

Technical field

The utility model relates to Ethernet communication technology field, relates in particular to a kind of industrial ethernet switch.

Background technology

Nineteen forty-six, the mechanical engineer D.S. of U.S. Ford breathes out moral and proposes at first " automation " word, and is used for describing the automatic transmission of cylinder and the process of processing.The fifties, the development of automatic regulator and classical control theory, making automation enter the single argument automatic regulating system is main local automation's stage.The sixties, with the appearance of modern control theory and applying of electronic computer, control combines with information processing automatically, makes automation enter into the comprehensive automation stage of optimal control and the management of production process.The seventies, the object of automation becomes extensive, complicated process and non-engineering system, relates to the insoluble problem of many modern control theories.The research of these problems, the theory of automation, the innovation of ways and means have been promoted, so the Based Intelligent Control of the multiple complication system of large system of systems control occurred, the advanced automation system of the achievements such as comprehensive utilization computer, the communication technology, system engineering and artificial intelligence occurred.After the seventies, automation begins to system's control of complexity and senior Based Intelligent Control development, and is widely applied to national defence, scientific research and economic dispatch every field, realizes more massive automation.The development of modern production and science and technology proposes more and more higher requirement to automation, and the while also provides necessary condition for the innovation of automatic technology.

Automatic technology is widely used in the aspects such as industry, agricultural, military affairs, scientific research, communications and transportation, commerce, medical treatment, service and family.Adopt the automatic technology not only can be the people from heavy manual labor, regardless of freeing mental labour and abominable, the dangerous operational environment, and can expand people's organ dysfunction, greatly raise labour productivity, automation is that new era of automatic technology has been opened in the development of the essential condition of industry, agricultural, national defence and the modernization of science technology and distinctive marks, modern control theory, single-chip microcomputer and computer, network technology.

Ethernet is with its maturation, reliable, major technique mode and development trend that cheap, compatible good characteristics have become the industrial automation system networking, and industrial ethernet switch is the technical grade communication product that is different from common Ethernet switch, is mainly used in the environment for use of Industry Control place and harshness; Industrial ethernet switch is the nucleus equipment of being responsible for communication and networking transfer function in the industrial automation system.The characteristics of industry spot are that the kind of field apparatus is numerous, communication interface and communication mode are different, in order to form unified automation system network, often need to increase variety of protocol or interface conversion equipment in industry spot, even need a plurality of automated communication networks of repeated construction in many industrial occasions, cause waste and poor efficiency on manpower or the material resources.The industrial ethernet switch cost compare of using now is high, and design comparison is complicated.

The utility model content

The purpose of this utility model is to propose a kind of industrial ethernet switch, to overcome the complicated and high shortcoming of cost compare of existing switch design.

For reaching this purpose, the utility model by the following technical solutions:

A kind of industrial ethernet switch, described switch comprises: comprise the processor control unit of CPU buckle, the crosspoint that comprises the MAC chip of integrated PHY, clock unit, power subsystem and CPLD control unit;

The described processor control unit that comprises the CPU buckle is managed the MAC chip of the integrated PHY in the described crosspoint, MAC chip by the integrated PHY in Media Independent Interface and the described crosspoint by local bus and is carried out the preliminary treatment instruction on data communication, the described CPLD control unit of read-write and be used for described clock unit and described power subsystem are carried out process control;

The described crosspoint that comprises the MAC chip of integrated PHY receives the control signal come from described processor control control unit, and the MAC chip by the integrated PHY in the described crosspoint carries out exchanges data;

Described clock unit is used for providing required clock signal to the MAC chip of the integrated PHY of described crosspoint or the cpu chip in the described processor control unit;

Described power subsystem is used for providing required power supply to described processor control unit, described crosspoint, described clock unit and described CPLD unit;

Described CPLD control unit is used for the signal of the CPU buckle of described processor control unit is carried out preliminary treatment.

Preferably, described CPU buckle is AT91RM9200 buckle or Godson CPU buckle.

Preferably, the MAC chip of the integrated PHY in the described crosspoint is two layers of Fast Ethernet exchange chip, supports L2+ management type, slight management type network and advanced Access Control List (ACL).

Preferably, the clock signal level of described clock unit generation and the MAC chip of the integrated PHY in the described crosspoint are complementary.

Preferably, described power subsystem adopts Switching Power Supply, and adopts the dual power supply redundancy mode.

Preferably, the preliminary treatment of described CPLD control unit comprises that RJ45 on the mainboard lights a lamp, mainboard type identification, port type identification, version number's identification, reset signal are processed, WDT is processed, alarm signal is processed and power supply signal in place is processed.

Preferably, described Ethernet switch also comprises 100,000,000 expansion board and mainboard interface or gigabit expansion board and mainboard interface.

The utility model advantage is integrated by the PHY of the MAC chip in the crosspoint, so that do not need outside PHY, to such an extent as to reach simplicity of designization and reduce cost.

Description of drawings

Fig. 1 is system configuration schematic diagram of the present utility model.

Embodiment

Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.

Fig. 1 is system configuration schematic diagram of the present utility model, as shown in Figure 1.A kind of industrial ethernet switch, processor control unit 101, crosspoint 103, clock unit 104, power subsystem 102 and CPLD control unit 105.

Described processor control unit 101 preferably comprises the processor control unit of CPU buckle, and described CPU buckle is preferably AT91RM9200 buckle or Godson CPU buckle; Managing the MAC chip of the integrated PHY in the described crosspoint 103, MAC chip by the integrated PHY in Media Independent Interface (MII) interface and the described crosspoint 103 by local bus carries out the preliminary treatment control instruction on data communication, the described CPLD control unit 105 of read-write and is used for described clock unit 104 and power subsystem 102 are carried out process control.

MAC chip in the described crosspoint 103 preferably comprises the crosspoint of the MAC chip of integrated PHY, and the MAC chip of the integrated PHY in the described crosspoint 103 is preferably two layers of Fast Ethernet exchange chip, supports L2+ management type, slight management type network and advanced Access Control List (ACL); Reception comes from the control signal of described processor control control unit 101, and the MAC chip by the integrated PHY in the described crosspoint 103 carries out exchanges data.More further preferably, the MAC chip model of integrated PHY is BCM53262.

Described clock unit 104 is used for providing required clock signal to the MAC chip of the integrated PHY of described crosspoint 103 or the cpu chip in the described processor control unit 101; The clock signal level that described clock unit 104 produces and the MAC chip of the integrated PHY in the described crosspoint 103 are complementary.More further preferably the output of clock crystal oscillator is that 25MHz drives through oversampling clock buffer.

Described power subsystem 102 is used for providing required power supply to described processor control unit 101, described crosspoint 103, described clock unit 104 and described CPLD control unit 105; The described power subsystem 102 preferred Switching Power Supplies that adopt, and adopt the dual power supply redundancy mode.Further preferably described power subsystem 102 is supported the 220VAC Alternating Current Power Supply, also supports 24V, 48V direct current supply simultaneously, provides voltage that 2.5V is arranged, 1.2V, and also needing provides 3.3V voltage by connector to the CPU buckle.

Described CPLD control unit 105, be used for the signal of the CPU buckle of described processor control unit 101 is carried out preliminary treatment, the preliminary treatment of described CPLD control unit 105 comprises that the RJ45 on the mainboard lights a lamp, mainboard type identification, port type identification, version number's identification, reset signal are processed, WDT is processed, alarm signal is processed and power supply signal in place is processed.

In addition, described Ethernet switch also comprises 100,000,000 expansion board and mainboard interface or gigabit expansion board and mainboard interface.

Above-mentioned only is preferred embodiment of the present utility model and institute's application technology principle; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the conversion that can expect easily or replacement all should be encompassed within the protection range of the present utility model.

Claims

1. an industrial ethernet switch is characterized in that, described switch comprises: comprise the processor control unit of CPU buckle, the crosspoint that comprises the MAC chip of integrated PHY, clock unit, power subsystem and CPLD control unit;

2. industrial ethernet switch according to claim 1 is characterized in that, described CPU buckle is AT91RM9200 buckle or Godson CPU buckle.

3. industrial ethernet switch according to claim 1 is characterized in that, the MAC chip of the integrated PHY in the described crosspoint is two layers of Fast Ethernet exchange chip, supports L2+ management type, slight management type network and advanced Access Control List (ACL).

4. industrial ethernet switch according to claim 1 is characterized in that, the clock signal level that described clock unit produces and the MAC chip of the integrated PHY in the described crosspoint are complementary.

5. industrial ethernet switch according to claim 1 is characterized in that, described power subsystem adopts Switching Power Supply, and adopts the dual power supply redundancy mode.

6. industrial ethernet switch according to claim 1, it is characterized in that the preliminary treatment of described CPLD control unit comprises that the RJ45 on the mainboard lights a lamp, mainboard type identification, port type identification, version number's identification, reset signal are processed, WDT is processed, alarm signal is processed and power supply signal in place is processed.

7. industrial ethernet switch according to claim 1 is characterized in that, described Ethernet switch also comprises 100,000,000 expansion board and mainboard interface or gigabit expansion board and mainboard interface.