CN108540337A - A kind of double network interface POS machine and its Network Expert Systems system, method - Google Patents

Abstract

The invention is applicable to the technical field of the Internet, and provides a dual-network-port POS machine and a network state monitoring system and method thereof. The network status monitoring system includes: a CPU module and a dual network port switching chip, the CPU module is connected to the dual network port switching chip, wherein the CPU module includes a system software module and an application software module; the system software module is used for Identifying the external network port connected to the external network, detecting the network status of the external network port connected to the external network in real time, and sending abnormal information to the application software module when the network status of the external network port is abnormal; The application software module is used to terminate the transaction in real time according to the abnormal information. It can monitor the network status of dual-network port POS machines in real time, avoid transaction failures caused by network abnormalities, improve efficiency and user experience. It effectively solves the problem that the existing dual network port POS machine cannot detect the network status of the external network port in real time.

Description

A dual-network port POS machine and its network status monitoring system and method

technical field

The invention belongs to the technical field of the Internet, and in particular relates to a POS machine with dual network ports and a network state monitoring system and method thereof.

Background technique

POS machine (point of sales terminal, point of sale information management system) is a multi-functional terminal. It is installed in the special merchants and acceptance outlets of credit cards and connected with computers to form a network, which can realize automatic transfer of electronic funds and has the ability to support consumption. , pre-authorization, balance inquiry and transfer functions, safe, fast and reliable to use. In order to facilitate payment and avoid wiring troubles, dual-network port POS machines have been derived in the traditional payment industry. One of the dual-network port POS machines is connected to the network to realize transactions, and the other port is provided to other devices for other devices to use network resources. As shown in Figure 1, the computer and the dual network port switching chip are connected through the internal network port port0, where port0 is the RGMII interface (Reduced GigabitMedia Independent Interface, simplified Gigabit Media Independent Interface), and the connection status of the internal network port port0 is always connection succeeded. The user uses the first external network port port1 and the second external network port port2, which can be plugged and unplugged at will, to monitor the network status of the system, such as link continuity, data flow statistics, and statistics of abnormal data packets. When the network status is abnormal, a notification is sent in real time to avoid abnormal consumption. However, the existing system software detects the connection of the network port only for the single-network port chip, and the dual-network port switch chip is always connected successfully because the connection status between the internal network port port0 and the computer is always successful, so the real-time monitoring of the connection between the computer and the dual-network port switch chip The connection status cannot monitor the network status of the external network port connected to the external network in real time.

To sum up, the existing dual network port POS machine has the problem of being unable to detect the network status of the external network port in real time.

Contents of the invention

In view of this, the embodiment of the present invention provides a dual-network port POS machine and its network status monitoring system and method to solve the problem that the existing dual-network port POS machine cannot detect the network status of the external network port in real time.

The first aspect of the embodiments of the present invention provides a network status monitoring system for a dual-network port POS machine. The network status monitoring system includes: a CPU module and a dual-network port switching chip, and the CPU module and the dual-network port Switching chip connections, wherein the CPU module includes a system software module and an application software module;

The system software module is used to identify the external network port connected to the external network, detect the network status of the external network port connected to the external network in real time, and send an abnormal message when the network status of the external network port is abnormal. information to said application software module;

The application software module is used to terminate the transaction in real time according to the abnormal information.

The second aspect of the embodiment of the present invention provides a method for monitoring network status of a POS machine with dual network ports, the method for monitoring network status includes:

Identifying the external network port that the dual network port switching chip is connected to the external network and detecting the network status of the external network port in real time;

When the network status of the external network port is abnormal, an abnormal information reminder is sent and the transaction is terminated in real time according to the abnormal information.

A third aspect of the embodiments of the present invention provides a dual-network port POS machine, the dual-network port POS machine includes the above-mentioned network status monitoring system of the dual-network port POS machine.

The present invention provides a dual-network port POS machine and its network state monitoring system and method. The system software module identifies the external network port connected to the external network, and detects the network state of the external network port connected to the external network in real time. And when the network status is abnormal, the transaction is terminated in real time through the application software module according to the abnormal information. It can monitor the network status of dual-network port POS machines in real time, avoid transaction failures caused by network abnormalities, improve efficiency and user experience. It effectively solves the problem that the existing dual network port POS machine cannot detect the network status of the external network port in real time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is the structural representation of existing dual network port POS machine;

FIG. 2 is a schematic structural diagram of a network status monitoring system of a dual-network port POS machine provided by Embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a system software module 101 provided in Embodiment 2 of the present invention;

Fig. 4 is a schematic diagram of the implementation process of the network status monitoring method of the dual-network port POS machine provided by Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of the implementation flow of step S101 provided by Embodiment 4 of the present invention;

FIG. 6 is a schematic diagram of a terminal device provided in Embodiment 5 of the present invention.

Detailed ways

In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

In order to solve the problem that the existing dual-network port POS machine cannot detect the network status of the external network port in real time, the embodiment of the present invention provides a dual-network port POS machine and its network status monitoring system and method. The external network port connected to the external network detects the network status of the external network port connected to the external network in real time, and terminates the transaction in real time through the application software module according to the abnormal information when the network status is abnormal. It can monitor the network status of dual-network port POS machines in real time to avoid transaction failures caused by network abnormalities.

In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

Embodiment one:

As shown in Figure 2, the present embodiment provides a network status monitoring system 100 of a dual network port POS machine, which includes: a CPU module 110 and a dual network port switching chip 120, the CPU module 110 is connected to the dual network port switching chip 120, The CPU module 110 includes a system software module 111 and an application software module 112 .

The system software module 111 is used to identify the external network port connected to the external network, detect the network status of the external network port connected to the external network in real time, and send abnormal information to the application software module 112 when the network status of the external network port is abnormal.

The application software module 112 is used to terminate the transaction in real time according to the abnormal information.

In a specific application, the dual network port switch chip 120 includes a first external network port port1 and a second external network port port2, and one of the first external network port port1 and the second external network port port2 is connected to an external network. Therefore, the external network port (which may be the first external network port port1 or the second external network port port2) connected to the external network needs to be identified through the system software module 111 .

In a specific application, the CPU module 110 is connected to the dual network port switch chip 120 through the internal network port port0 of the dual network port switch chip 120 .

In a specific application, the system software module 111 monitors in real time the network state of the internal network port poor0 of the dual-network port switching chip 120, and records the source MAC (MediaAccess Control , media access control) address, the corresponding external network port is queried through the internal learning linked list of the dual network port switching chip 120, and the external network port that is queried is the external network port connected to the external network.

In a specific application, the system software module 111 needs to provide the application software module 112 with the network status of the first external network port port1 and the second external network port port2 in real time, including the connection status of the ports, data flow statistics and abnormal flow data packets, etc. . The system software module 111 needs to query the internal registers of the dual-network port switching chip 120 in real time to query the two external network ports (the first external network port port1 and the second external network port port2) of the dual-network port switching chip 120, and record the two external network ports. The connection status and data traffic statistics of the network ports (the first external network port port1 and the second external network port port2), and then according to the connection status of the two external network ports (the first external network port port1 and the second external network port port2) and data traffic statistics to analyze the network status of the two external network ports.

In a specific application, when the application software module 112 receives the abnormal information that the external port connected to the external network has an abnormal network status, it will terminate the transaction in real time and notify the user, so as to avoid transaction failure and improve user experience. It should be noted that the aforementioned abnormal network status includes, but is not limited to, disconnection of a network link, abnormality of network data packets, and the like.

It should be noted that the network monitoring system provided in this embodiment can also be used to monitor the network status of the multi-network port POS machine, monitor the connection between the multi-network port POS machine and the external network in real time, and avoid transaction failures caused by network abnormalities.

The network state monitoring system of a kind of dual-network port POS machine provided by this embodiment, identifies the external network port connected to the external network through the system software module, detects the network state of the external network port connected to the external network in real time, and When the network status is abnormal, the transaction is terminated in real time through the application software module according to the abnormal information. It can monitor the network status of dual-network port POS machines in real time to avoid transaction failures caused by network abnormalities.

Embodiment two:

As shown in FIG. 3, in this embodiment, the system software module 111 in Embodiment 1 includes a learning unit 111a and a monitoring unit 111b.

The learning unit 111a is used to query the external network ports connected to the external network according to the internal learning link list of the dual network port switch chip 120 .

The monitoring unit 111b is used to monitor and record the network status of the external network port of the dual network port switch chip 120 in real time, and send abnormal information to the application software module 112 when the network status of the external network port connected to the external network is abnormal.

In a specific application, the learning unit 111a monitors the network status of the internal network port port0 of the dual network port switching chip 120 in real time, records the source MAC address of the Ethernet packet whose destination IP address belongs to the IP address of the dual network port POS machine, and passes through the dual network port POS machine. The internal learning link list of the network port switching chip 120 queries the corresponding external network port (maybe the first external network port port1 or port2), and the queried external network port is the external network port connected to the external network.

In a specific application, after the driver software is loaded normally, the network data packet of the internal network port port0 is monitored in real time. Whether it is in the dynamic IP mode or the static IP mode, the destination IP address of the input network data packet belongs to the IP address of the POS machine. Record the source MAC address of the network data packet, and then query the physical port corresponding to the MAC address (that is, the first external network port port1 or the second external network port port2), and the corresponding physical port is the one connected to the external network The connected external network port. In a specific application, the physical port corresponding to the recorded MAC address can be queried through the internal learning linked list of the dual network port switch chip 120 . In a specific application, the corresponding external network port is queried, the network status of the external network port is recorded in the form of a linked list, and the external network port connected to the external network is marked, and the network of the external network port can be checked through the recorded linked list. Link on-off, data flow, and abnormal data packets are maintained.

In a specific application, the monitoring module 111b queries the internal registers of the dual-network port switching chip 120 in real time to query the two external network ports of the dual-network port switching chip 120, and records the two external network ports (the first external network port port1 and the second external network port According to the connection status and data flow statistics of the external network port port2), the network status of the two external network ports (the first external network port port1 and the second external network port port2) is analyzed according to the connection status and data flow statistics.

In a specific application, the internal registers of the dual network port switch chip 120 are queried in real time through the maintenance table of the driver software to query the network statuses of the first external network port port1 and the second external network port port2. Specifically, query the connection status and network data flow statistics of the first external network port port1 and the second external network port port2, and notify the application software module at the first time when the network link of the external network port is disconnected or the data packet is abnormal. The software module can know the network status of the external network port at the first time, terminate the transaction and notify the user when the network is abnormal, avoid transaction failure and improve user experience.

The network state monitoring system of a kind of dual-network port POS machine provided in this embodiment, identifies the external network port connected to the external network through the learning unit, detects the network state of the external network port connected to the external network in real time through the monitoring unit, And when the network status is abnormal, the transaction is terminated in real time through the application software module according to the abnormal information. It can monitor the network status of dual-network port POS machines in real time to avoid transaction failures caused by network abnormalities.

Embodiment three:

As shown in Figure 4, the present embodiment provides a network status monitoring method of a POS machine with dual network ports, which specifically includes:

Step S101: Identify the external network port connecting the dual network port switch chip to the external network and detect the network status of the external network port in real time.

In a specific application, the system software module real-time monitors the network status of the internal network port poor0 of the dual-network port switch chip, and records the source MAC (Media Access Control, Media Access Control, Media access control) address, query the corresponding external network port through the internal learning linked list of the dual-network port switching chip 120, and the external network port that is queried is the external network port connected to the external network.

In a specific application, the system software module needs to provide the application software module 112 with the network status of the first external network port port1 and the second external network port port2 in real time, including the connection status of the ports, data flow statistics, and abnormal flow data packets. The system software module needs to query the internal registers of the dual-network port switching chip in real time to query the two external network ports (the first external network port port1 and the second external network port port2) of the dual-network port switching chip, and record the two external network ports ( The connection status and data flow statistics of the first external network port port1 and the second external network port port2), and then according to the connection status and data flow of the two external network ports (the first external network port port1 and the second external network port port2) Statistically analyze the network status of the two external network ports.

Step S102: When the network status of the external network port is abnormal, send an abnormal information reminder and terminate the transaction in real time according to the abnormal information.

In a specific application, when the application software module receives the abnormal information that the external port connected to the external network has abnormal network status, it will terminate the transaction in real time and notify the user, so as to avoid transaction failure and improve user experience. It should be noted that the aforementioned abnormal network status includes, but is not limited to, disconnection of a network link, abnormality of network data packets, and the like.

It should be noted that the network status monitoring method for a dual-network port POS machine provided in this embodiment is based on the same idea as the network status monitoring system for a dual-network port POS machine provided in Embodiment 1, and the technical effect it brings is the same as that of The embodiment of the system shown in FIG. 1 of the present invention is the same. For specific content, please refer to the description in the embodiment of the method shown in FIG. 1 of the present invention, which will not be repeated here.

Therefore, the network state monitoring system of the dual-network port POS machine provided by this embodiment identifies the external network port connected to the external network through the system software module, detects the network state of the external network port connected to the external network in real time, and When the network status is abnormal, the transaction is terminated in real time through the application software module according to the abnormal information. It can monitor the network status of dual-network port POS machines in real time to avoid transaction failures caused by network abnormalities.

Embodiment two:

As shown in Figure 5, in this embodiment, step S101 in Embodiment 1 specifically includes:

Step S201: Query the external network port connected to the external network according to the internal learning linked list of the dual network port switch chip.

In a specific application, the learning unit monitors the network status of the internal network port port0 of the dual-network port switching chip 120 in real time, records the source MAC address of the Ethernet packet whose destination IP address belongs to the IP address of the dual-network port POS machine, and passes through the dual-network port. The internal learning linked list of the port switch chip queries the corresponding external network port (may be the first external network port port1, and may also be port2), and the queried external network port is the external network port connected to the external network.

In a specific application, after the driver software is loaded normally, the network data packet of the internal network port port0 is monitored in real time. Whether it is in the dynamic IP mode or the static IP mode, the destination IP address of the input network data packet belongs to the IP address of the POS machine. Record the source MAC address of the network data packet, and then query the physical port corresponding to the MAC address (that is, the first external network port port1 or the second external network port port2), and the corresponding physical port is the one connected to the external network The connected external network port. In a specific application, the physical port corresponding to the recorded MAC address can be queried through the internal learning linked list of the dual network port switch chip 120 . In a specific application, the corresponding external network port is queried, the network status of the external network port is recorded in the form of a linked list, and the external network port connected to the external network is marked, and the network of the external network port can be checked through the recorded linked list. Link on-off, data flow, and abnormal data packets are maintained.

In one embodiment, the above step S201 specifically includes the following steps:

Step S2011: Monitor the network status of the internal network port of the dual network port switch chip in real time.

Step S2012: Record the source MAC address of the Ethernet data packet whose destination IP address belongs to the IP address of the POS machine with dual network ports.

Step S2013: Query the corresponding external network port through the internal learning linked list of the dual-network port switching chip, and the external network port found is the external network port connected to the external network.

Step S202: Monitor and record the network status of the external network port of the dual network port switching chip in real time, and send abnormal information to the application software module when the network status of the external network port connected to the external network is abnormal.

In a specific application, the monitoring module queries the internal registers of the dual-network port switching chip in real time to query the two external network ports of the dual-network port switching chip, and records the two external network ports (the first external network port port1 and the second external network port The connection status and data flow statistics of port2), and analyze the network status of two external network ports (the first external network port port1 and the second external network port port2) according to the connection status and data flow statistics.

In a specific application, the network status of the first external network port port1 and the second external network port port2 is queried in real time through the maintenance table of the driver software to query the internal registers of the dual-network port switch chip. Specifically, query the connection status and network data flow statistics of the first external network port port1 and the second external network port port2, and notify the application software module at the first time when the network link of the external network port is disconnected or the data packet is abnormal. The software module can know the network status of the external network port at the first time, terminate the transaction and notify the user when the network is abnormal, avoid transaction failure and improve user experience.

In one embodiment, the above step S202 specifically includes the following steps:

Step S2021: Query the internal registers of the dual-network port switch chip in real time, query and record the connection status and data flow statistics of the two external network ports of the dual-network port switch chip.

Step S2022: Analyze the network status of the two external network ports according to the connection status and the data traffic statistics.

Embodiment five:

Fig. 6 is a schematic diagram of a terminal device provided by an embodiment of the present invention. As shown in FIG. 6 , the terminal device 6 of this embodiment includes: a processor 60 , a memory 61 , and a computer program 62 stored in the memory 61 and operable on the processor 60 , such as a program. When the processor 60 executes the computer program 62, the steps in the above embodiments of the PID parameter adjustment method are implemented, for example, steps S101 to S102 shown in FIG. 4 .

Exemplarily, the computer program 62 can be divided into one or more modules/units, and one or more modules/units are stored in the memory 61 and executed by the processor 60 to implement the present invention. One or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the terminal device 6 . For example, the computer program 62 can be divided into an identification monitoring module and an abnormal reminder processing module;

The identification and monitoring module is used to identify the external network port connected to the dual network port switching chip and the external network and detect the network status of the external network port in real time;

The exception reminder processing module is used to send an exception information reminder and terminate the transaction in real time according to the exception information when the network status of the external network port is abnormal

The terminal device 6 may be computing devices such as desktop computers, notebooks, palmtop computers, and cloud servers. The terminal device may include, but not limited to, a processor 60 and a memory 61 . Those skilled in the art can understand that FIG. 6 is only an example of the terminal device 6, and does not constitute a limitation on the terminal device 6. It may include more or less components than those shown in the figure, or combine certain components, or different components. , for example, a terminal device may also include an input and output device, a network access device, a bus, and the like.

The so-called processor 60 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The storage 61 may be an internal storage unit of the terminal device 6 , such as a hard disk or memory of the terminal device 6 . The memory 61 can also be an external storage device of the terminal device 6, such as a plug-in hard disk equipped on the terminal device 6, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash memory card (Flash Card) and so on. Further, the memory 61 may also include both an internal storage unit of the terminal device 6 and an external storage device. The memory 61 is used to store computer programs and other programs and data required by the terminal device. The memory 61 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the above-mentioned units and modules in the wireless terminal, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal equipment and method may be implemented in other ways. For example, the device/terminal device embodiments described above are only illustrative, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components May be combined or may be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If an integrated module/unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention realizes all or part of the processes in the methods of the above embodiments, and can also be completed by instructing related hardware through computer programs, and the computer programs can be stored in a computer-readable storage medium. When executed by the processor, the steps in the above-mentioned various method embodiments can be realized. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained on computer readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer readable media does not include It is an electrical carrier signal and a telecommunication signal.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications to the technical solutions recorded, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention, and should be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of Network Expert Systems system of double network interface POS machine, which is characterized in that the Network Expert Systems system includes： CPU module and double network interface exchange chips, the CPU module is connect with double network interface exchange chips, wherein the CPU module packet Include system software module and application software module；

The external network interface that the system software module is connect with external network for identification, detection in real time is described to be connected with external network The network state of the external network interface connect sends exception information to described when the network state of the external network interface occurs abnormal Application software module；

The application software module is used to terminate transaction in real time according to the exception information.

2. Network Expert Systems system according to claim 1, which is characterized in that the system software module includes monitoring Unit and unit；

The unit is used to inquire the outside connecting with external network according to the internal learning chained list of double network interface exchange chips Network interface；

The network state of external network interface of the monitoring unit for monitoring and recording double network interface exchange chips in real time, and When the network state of the external network interface being connect with external network occurs abnormal, exception information is sent to the application software mould Block.

3. Network Expert Systems system according to claim 2, which is characterized in that the unit is specifically used for：It is real When monitor double network interface exchange chips inside network interface network state, record purpose IP address belong to double network interface POS The source MAC of the Ethernet data bag of the IP address of machine is inquired by the internal learning chained list of double network interface exchange chips Corresponding external network interface, the external network interface inquired are the external network interface being connect with external network.

4. network state detection system according to claim 2, which is characterized in that the monitoring unit is specifically used for：It is real When inquire the internal registers of double network interface exchange chips and inquire two of double network interface exchange chips external network interfaces, and remember The connection status and data flux statistics for recording described two external network interfaces, according to the connection status and the data flux statistics Analyze the network state of described two external network interfaces.

5. Network Expert Systems system according to claim 1, which is characterized in that the CPU module and double network interfaces The inside network interface connection that exchange chip passes through double network interface exchange chips.

6. a kind of Network Expert Systems method of double network interface POS machine, which is characterized in that the Network Expert Systems method includes：

It identifies the external network interface that double network interface exchange chips are connect with external network and detects the network-like of the external network interface in real time State；

When the network state of the external network interface occurs abnormal, the prompting of transmission exception information is simultaneously real-time according to the exception information Terminate transaction.

7. Network Expert Systems method according to claim 6, which is characterized in that the double network interface exchange chips of identification with The external network interface of external network connection and the network state for detecting the external network interface in real time, including：

The external network interface being connect with external network is inquired according to the internal learning chained list of double network interface exchange chips；

The network state of the external network interface of double network interface exchange chips is monitored and recorded in real time, and is connected with external network described When the network state of the external network interface connect occurs abnormal, exception information is sent to the application software module.

8. Network Expert Systems method according to claim 7, which is characterized in that the double network interface exchange chips of the basis Internal learning chained list inquires the external network interface being connect with external network, specifically includes：

The network state of the inside network interface of double network interface exchange chips is monitored in real time；

Record purpose IP address belongs to the source MAC of the Ethernet data bag of the IP address of double network interface POS machine；

Corresponding external network interface is inquired by the internal learning chained list of double network interface exchange chips, the external network interface inquired is i.e. For the external network interface being connect with external network.

9. Network Expert Systems method according to claim 7, which is characterized in that the real-time monitoring simultaneously records described double The network state of the external network interface of network interface exchange chip, specifically includes：

The internal register of double network interface exchange chips described in real-time query is inquired and records two of double network interface exchange chips The connection status and data flux statistics of external network interface；

The network state of described two external network interfaces is analyzed according to the connection status and the data flux statistics.

10. a kind of double network interface POS machine, which is characterized in that double network interface POS machine include such as claim 1 to 6 any one institute The Network Expert Systems system stated.