CN111884893B - Input and output signal acquisition system and test method - Google Patents
Input and output signal acquisition system and test method Download PDFInfo
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- CN111884893B CN111884893B CN202010537171.3A CN202010537171A CN111884893B CN 111884893 B CN111884893 B CN 111884893B CN 202010537171 A CN202010537171 A CN 202010537171A CN 111884893 B CN111884893 B CN 111884893B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40189—Flexible bus arrangements involving redundancy by using a plurality of bus systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40293—Bus for use in transportation systems the transportation system being a train
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Abstract
The embodiment of the invention provides an input and output signal acquisition system and a test method; the system comprises an input/output module, a relay module, a first central control unit and a second central control unit; the input and output module is respectively connected with the first central control unit and the second central control unit through the relay module; the input and output module comprises a communication control board, a digital input board and a digital output board; the communication control board is connected with the digital input board through a first bus and a second bus; the communication control board is connected with the digital output board through a third bus and a fourth bus; the communication control board also comprises a first port and a second port; the relay module comprises a first board card and a second board card; a port on the first board card is connected with a first port on the communication control board; and a port on the second board card is connected with a second port on the communication control board.
Description
Technical Field
The invention relates to the technical field of train communication, in particular to an input and output signal acquisition system and a test method.
Background
The train-mounted network information system is a system with strong comprehensiveness, modularization and integration, and therefore higher requirements are put forward on a protection mechanism.
The train-mounted network information system comprises an input and output signal acquisition system, and the input and output signal acquisition system is used for acquiring input and output signals of related equipment in a train. In an Input/Output signal acquisition system, a CCU (Central Control Unit) needs to perform ETH communication with an IOM (Input/Output Module), collect a Control instruction and device state information fed back by the IOM in real time, and send the Control instruction to the IOM, so that acquisition of an IOM signal affects train operation safety.
In the prior art, a redundancy protection mechanism is adopted for an acquisition point unit inside an input/output module, that is: and carrying out redundancy protection on the acquisition point unit in the input and output module through a redundant acquisition pin. However, the signal acquisition channel between the input/output module and the CCU does not employ a redundancy protection mechanism. This poses a systematic risk of not being able to acquire all IOM signals in the train once the signal acquisition channel is dead.
Disclosure of Invention
The embodiment of the invention provides an input and output signal acquisition system and a test method, which are used for solving the defect that a signal acquisition channel in the input and output signal acquisition system in the prior art is lack of a redundancy protection mechanism.
An embodiment of a first aspect of the present invention provides an input/output signal acquisition system, including: an input/output module 101, a relay module 102, a first central control unit 103, and a second central control unit 104; wherein, the input/output module 101 is connected to the first central control unit 103 and the second central control unit 104 through the relay module 102;
the input/output module 101 includes a communication control board 1011, a digital input board 1012, and a digital output board 1013; wherein, the communication control board 1011 and the digital input board 1012 are connected by a first bus and a second bus; the communication control board 1011 and the digital quantity output board 1013 are connected by a third bus and a fourth bus;
the communication control board 1011 further comprises a first port and a second port; the relay module 102 comprises a first board card and a second board card; a port on the first board card is connected with a first port on the communication control board 1011, and another port on the first board card is connected with the first central control unit 103; a port on the second board card is connected to a second port on the communication control board 1011, and another port on the second board card is connected to the second central control unit 104.
In the above technical solution, a first port in the communication control board 1011, a first board in the relay module 102, and the first central control unit 103 form a first ethernet data transmission channel, and the first ethernet data transmission channel and the first bus form a first input signal acquisition channel;
a second port in the communication control board 1011, a second board in the relay module 102, and the second central control unit 104 form a second ethernet data transmission channel, and the second ethernet data transmission channel and the second bus form a second input signal acquisition channel.
In the above technical solution, a first port in the communication control board 1011, a first board card in the relay module 102, and the first central control unit 103 form a first ethernet data transmission channel, and the first ethernet data transmission channel and the third bus form a first output signal acquisition channel;
a second port in the communication control board 1011, a second board in the relay module 102, and the second central control unit 104 form a second ethernet data transmission channel, and the second ethernet data transmission channel and the fourth bus form a second output signal acquisition channel.
In the above technical solution, the device further comprises a display module 105 for displaying the working states of the input signal acquisition channel and the output signal acquisition channel; the display module 105 is connected to the relay module 102.
An embodiment of a second aspect of the present invention provides a testing method for testing an input/output signal acquisition system according to the embodiment of the first aspect of the present invention, where the method includes:
step S1-2, connecting the first port in the communication control board 1011 of the input/output module 101, the first board in the relay module 102, and the first ethernet data transmission channel formed by the first central control unit 103, and disconnecting the second port in the communication control board 1011 of the input/output module 101, the second board in the relay module 102, and the second ethernet data transmission channel formed by the second central control unit 104;
step S1-2, the first central control unit 103 transmitting data, which is transmitted via the first board in the relay module 102, the first port in the communication control board 1011, and the first bus between the communication control board 1011 and the digital quantity input board 1012;
step S1-3, determining whether a first Ethernet data transmission channel and a first input signal acquisition channel formed by a first bus work normally according to the data capture result of the external IO device 301;
step S1-4, interrupting the first Ethernet data transmission channel and connecting the second Ethernet data transmission channel;
step S1-5, the second central control unit 104 transmitting data, which is transmitted via the second board in the relay module 102, the second port in the communication control board 1011, and the second bus between the communication control board 1011 and the digital input board 1012;
step S1-6, determining whether the second ethernet data transmission channel and the second input signal acquisition channel formed by the second bus operate normally according to the result of capturing data by the external IO device 301.
In the above technical solution, the method further includes:
step S2-1, connecting the first Ethernet data transmission channel and interrupting the second Ethernet data transmission channel;
step S2-2, the external IO device 301 sends data, and the data is transmitted via the third bus between the communication control board 1011 and the digital output board 1013, the first port in the communication control board 1011, and the first board in the relay module 102;
step S2-3, determining whether a first output signal acquisition channel formed by a third bus and a first ethernet data transmission channel works normally according to the data capturing result of the first central control unit 103;
step S2-4, interrupting the first Ethernet data transmission channel and connecting the second Ethernet data transmission channel;
step S2-5, the external IO device 301 sends data, and the data is transmitted via the fourth bus between the communication control board 1011 and the digital output board 1013, the second port in the communication control board 1011, and the second board in the relay module 102;
step S2-6, determining whether the second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel works normally according to the data capturing result of the second central control unit 104.
In the above technical solution, the determining, according to the result of capturing data by the external IO device 301, whether a first input signal acquisition channel formed by the first ethernet data transmission channel and the first bus normally operates specifically includes:
if the IO device 301 can capture the data sent by the first central control unit 103, the first input signal acquisition channel formed by the first ethernet data transmission channel and the first bus works normally; if the IO device 301 cannot capture the data sent by the first central control unit 103, the first input signal acquisition channel formed by the first ethernet data transmission channel and the first bus cannot work normally.
In the above technical solution, the determining, according to the result of capturing data by the external IO device 301, whether a second input signal acquisition channel formed by the second ethernet data transmission channel and the second bus normally operates specifically includes:
if the IO device 301 can capture the data sent by the second central control unit 104, the input signal acquisition channel formed by the second ethernet data transmission channel and the second bus works normally; if the IO device 301 cannot capture the data sent by the second central control unit 104, the second input signal acquisition channel formed by the second ethernet data transmission channel and the second bus cannot work normally.
In the above technical solution, the determining whether a first output signal acquisition channel formed by a third bus and a first ethernet data transmission channel works normally according to the data capture result of the first central control unit 103 specifically includes:
if the first central control unit 103 can capture the data sent by the IO device 301, a first output signal acquisition channel formed by a third bus and a first ethernet data transmission channel works normally; if the first central control unit 103 cannot capture the data sent by the IO device 301, the first output signal acquisition channel formed by the third bus and the first ethernet data transmission channel cannot work normally.
In the above technical solution, the determining, by the second central control unit 104 according to the data capturing result, whether a second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel normally operates specifically includes:
if the second central control unit 104 can capture the data sent by the IO device 301, a second output signal acquisition channel formed by a fourth bus and a second ethernet data transmission channel works normally; if the second central control unit 104 cannot capture the data sent by the IO device 301, the second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel cannot work normally.
According to the input and output signal acquisition system and the test method provided by the embodiment of the invention, two mutually redundant Ethernet data transmission channels are established between the input and output module and the central control unit, and two mutually redundant buses are connected between the communication control board inside the input and output module and the digital input board/digital output board, so that the redundancy protection of the input and output signal acquisition channels is realized, and the safety of the input and output signal acquisition system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an input/output signal acquisition system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an input/output signal acquisition system according to another embodiment of the present invention;
fig. 3 is a schematic view of a scenario for testing an input/output signal acquisition system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an input/output signal acquisition system according to an embodiment of the present invention, and as shown in fig. 1, the input/output signal acquisition system according to the embodiment of the present invention includes:
an input/output module 101, a relay module 102, a first central control unit 103, and a second central control unit 104; the input/output module 101 is connected to a first central control unit 103 and a second central control unit 104 through a relay module 102.
The input/output module 101 includes a communication control board 1011, a digital input board 1012, and a digital output board 1013; wherein, the communication control board 1011 is connected with the digital input board 1012 through a first bus and a second bus; the communication control board 1011 and the digital quantity output board 1013 are connected by a third bus and a fourth bus. The first bus and the second bus between the communication control board 1011 and the digital input board 1012 are redundant with each other, and the third bus and the fourth bus between the communication control board 1011 and the digital output board 1013 are also redundant with each other.
In an embodiment of the present invention, the first bus, the second bus, the third bus, or the fourth bus is a backplane bus.
The communication control board 1011 further includes a first port and a second port.
The relay module 102 includes a first board card and a second board card. A port on the first board is connected to a first port on the communication control board 1011, and another port on the first board is connected to the first central control unit 103. A port on the second board is connected to a second port on the communication control board 1011, and another port on the second board is connected to the second central control unit 104.
Different network ports, multicast addresses and IP addresses can be configured for the first port and the second port in the communication control board 1011 through TRDP communication, so that the two ports can form two ethernet data transmission channels that are redundant to each other. Specifically, a first port in the communication control board 1011, a first board in the relay module 102, and the first central control unit 103 form a first ethernet data transmission channel, and a second port in the communication control board 1011, a second board in the relay module 102, and the second central control unit 104 form a second ethernet data transmission channel. The two Ethernet data transmission channels are mutually independent to form a redundant structure. The input/output module 101 may communicate with the central control unit (i.e., implement collection of IOM signals) through any one of the ethernet data transmission channels.
It should be noted that there is a corresponding relationship between the first bus between the communication control board 1011 and the digital input board 1012 and the first ethernet data transmission channel, that is, the data transmitted by the first ethernet data transmission channel will be transmitted by the first bus. Similarly, there is a correspondence between the second bus between the communication control board 1011 and the digital quantity input board 1012 and the second ethernet data transmission channel, that is, data transmitted by the second ethernet data transmission channel will be transmitted by the second bus. That is, the first ethernet data transmission channel and the first bus form a first input signal acquisition channel, and the second ethernet data transmission channel and the second bus form a second input signal acquisition channel.
Similarly, there is a corresponding relationship between the third bus between the communication control board 1011 and the digital quantity output board 1013 and the first ethernet data transmission channel, that is, data transmitted by the third bus will be transmitted by the first ethernet data transmission channel. Similarly, there is a correspondence between the fourth bus between the communication control board 1011 and the digital quantity output board 1013 and the second ethernet data transmission channel, that is, data transmitted by the fourth bus will be transmitted by the second ethernet data transmission channel. That is, the third bus and the first ethernet data transmission channel form a first output signal acquisition channel, and the fourth bus and the second ethernet data transmission channel form a second output signal acquisition channel.
In the embodiment of the present invention, the first central control unit 103 and the second central control unit 104 may be any one central control unit in a train.
The input and output signal acquisition system provided by the embodiment of the invention establishes two mutually redundant Ethernet data transmission channels between the input and output module and the central control unit, and two mutually redundant buses are connected between the communication control board inside the input and output module and the digital input board/digital output board, so that the redundancy protection of the input and output signal acquisition channels is realized, and the safety of the input and output signal acquisition system is improved.
Based on any of the above embodiments, fig. 2 is a schematic structural diagram of an input/output signal acquisition system according to another embodiment of the present invention, and as shown in fig. 2, the input/output signal acquisition system according to another embodiment of the present invention further includes: a display module 105; the display module 105 is connected to the relay module 102.
The central control unit can acquire the vital signals of the input and output signal acquisition channels and forward the vital signals to the display module 105 through the relay module 102, so that the display module 105 can display whether the input and output signal acquisition channels work normally according to the vital signals.
The input and output signal acquisition system provided by the embodiment of the invention can intuitively display the working condition of the input and output signal acquisition channel through the display module, and is favorable for mastering the possible faults of the input and output signal acquisition channel in real time.
Based on the input and output signal acquisition system provided by the embodiment of the invention, the embodiment of the invention also provides a test method. Fig. 3 is a schematic view of a scenario for testing an input/output signal acquisition system.
As shown in fig. 3, before the test, the digital input board 1012 and the digital output board 1013 in the input/output module 101 of the input/output signal acquisition system are connected to the IO device 301.
The IO device 301 may be an IO device of a real subsystem in a train, but as a preferred implementation manner, the IO device 301 in the embodiment of the present invention is a simulation platform implemented by a computer and having a function of simulating data transmission and reception of the train subsystem, for example, a simulation platform implemented by LABVIEW software on a computer.
The test of the input and output signal acquisition system is divided into two aspects, namely a data receiving test and a data sending test. The data receiving test refers to a process of sending data to the central processing unit, transmitting the data through the input and output signal acquisition channel, and receiving the data by the IO device 301 for testing. The data transmission test refers to a process of transmitting data to the IO device 301, transmitting the data through the input and output signal acquisition channel, and receiving the data by the central processing unit for testing.
Specifically, the test method provided by the embodiment of the invention comprises the following steps:
step S1-1, the first port in the communication control board 1011 of the input/output module 101, the first board in the relay module 102, and the first ethernet data transmission channel formed by the first central control unit 103 are turned on, and the second port in the communication control board 1011 of the input/output module 101, the second board in the relay module 102, and the second ethernet data transmission channel formed by the second central control unit 104 are interrupted.
At step S1-2, the first central control unit 103 transmits data, which is transferred via the first board in the relay module 102, the first port in the communication control board 1011, and the first bus between the communication control board 1011 and the digital quantity input board 1012.
Step S1-3, the IO device 301 determines whether the first ethernet data transmission channel and the first input signal acquisition channel formed by the first bus operate normally according to the data capture result.
Those skilled in the art can easily understand that if the IO device 301 can capture data sent by the first central control unit 103, the first ethernet data transmission channel and the first input signal acquisition channel formed by the first bus operate normally; if the IO device 301 cannot capture the data sent by the first central control unit 103, the first input signal acquisition channel formed by the first ethernet data transmission channel and the first bus cannot work normally.
In an embodiment of the present invention, the IO device 301 captures data using communication monitoring software including wireshark.
Step S1-4, the first port in the communication control board 1011 of the input/output module 101, the first board in the relay module 102, and the first ethernet data transmission channel formed by the first central control unit 103 are interrupted, and the second port in the communication control board 1011 of the input/output module 101, the second board in the relay module 102, and the second ethernet data transmission channel formed by the second central control unit 104 are connected.
Step S1-5, the second central control unit 104 transmits data, which is transmitted via the second board in the relay module 102, the second port in the communication control board 1011, and the second bus between the communication control board 1011 and the digital quantity input board 1012.
Step S1-6, the IO device 301 determines whether the second ethernet data transmission channel and the second input signal acquisition channel formed by the second bus operate normally according to the data capturing result.
Those skilled in the art can easily understand that if the IO device 301 can capture data sent by the second central control unit 104, the second ethernet data transmission channel and the second input signal acquisition channel formed by the second bus operate normally; if the IO device 301 cannot capture the data sent by the second central control unit 104, the second input signal acquisition channel formed by the second ethernet data transmission channel and the second bus cannot work normally.
The test method provided by the embodiment of the invention further comprises the following steps:
step S2-1, the first port in the communication control board 1011 of the input/output module 101, the first board in the relay module 102, and the first ethernet data transmission channel formed by the first central control unit 103 are turned on, and the second port in the communication control board 1011 of the input/output module 101, the second board in the relay module 102, and the second ethernet data transmission channel formed by the second central control unit 104 are interrupted.
Step S2-2, the IO device 301 sends data, which is transmitted via the third bus between the communication control board 1011 and the digital quantity output board 1013, the first port in the communication control board 1011, and the first board in the relay module 102.
In the embodiment of the present invention, the IO device 301 simulates the real device in the existing vehicle to send data through the LABVIEW simulation test platform.
Step S2-3, the first central control unit 103 determines whether the first output signal acquisition channel formed by the third bus and the first ethernet data transmission channel is working normally according to the data capturing result.
Those skilled in the art can easily understand that if the first central control unit 103 can capture data sent by the IO device 301, the first output signal acquisition channel formed by the third bus and the first ethernet data transmission channel works normally; if the first central control unit 103 cannot capture the data sent by the IO device 301, the first output signal acquisition channel formed by the third bus and the first ethernet data transmission channel cannot work normally.
In an embodiment of the invention, the first central control unit 103 captures the data using communication monitoring software including wireshark.
Step S2-4, the first port in the communication control board 1011 of the input/output module 101, the first board in the relay module 102, and the first ethernet data transmission channel formed by the first central control unit 103 are interrupted, and the second port in the communication control board 1011 of the input/output module 101, the second board in the relay module 102, and the second ethernet data transmission channel formed by the second central control unit 104 are connected.
Step S2-5, the IO device 301 sends data, which is transmitted via the fourth bus between the communication control board 1011 and the digital quantity output board 1013, the second port in the communication control board 1011, and the second board in the relay module 102.
Step S2-6, the second central control unit 104 determines whether the second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel is working normally according to the data capturing result.
Those skilled in the art can easily understand that if the second central control unit 104 can capture the data sent by the IO device 301, the second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel works normally; if the second central control unit 104 cannot capture the data sent by the IO device 301, the second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel cannot work normally.
In an embodiment of the present invention, the second central control unit 104 captures the data using communication monitoring software including wireshark.
The test method provided by the embodiment of the invention can carry out communication test on the input and output signal acquisition system with the redundant structure, and ensures the normal work of the input and output signal acquisition system.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An input-output signal acquisition system, comprising: an input/output module (101), a relay module (102), a first central control unit (103), and a second central control unit (104); wherein the input/output module (101) is connected with the first central control unit (103) and the second central control unit (104) through the relay module (102);
the input/output module (101) comprises a communication control board (1011), a digital input board (1012) and a digital output board (1013); wherein, the communication control board (1011) is connected with the digital input board (1012) through a first bus and a second bus; the communication control board (1011) is connected with the digital quantity output board (1013) through a third bus and a fourth bus;
the communication control board (1011) further comprises a first port and a second port; the relay module (102) comprises a first board card and a second board card; a port on the first board card is connected with a first port on the communication control board (1011), and the other port on the first board card is connected with the first central control unit (103); a port on the second board card is connected with a second port on the communication control board (1011), and the other port on the second board card is connected with the second central control unit (104);
a first port in the communication control board (1011), a first board card in the relay module (102) and the first central control unit (103) form a first ethernet data transmission channel, and the first ethernet data transmission channel and the first bus form a first input signal acquisition channel;
a second port in the communication control board (1011), a second board card in the relay module (102) and the second central control unit (104) form a second ethernet data transmission channel, and the second ethernet data transmission channel and the second bus form a second input signal acquisition channel;
a first port in the communication control board (1011), a first board card in the relay module (102) and the first central control unit (103) form a first ethernet data transmission channel, and the first ethernet data transmission channel and the third bus form a first output signal acquisition channel;
a second port in the communication control board (1011), a second board card in the relay module (102), and the second central control unit (104) form a second ethernet data transmission channel, and the second ethernet data transmission channel and the fourth bus form a second output signal acquisition channel.
2. The input-output signal acquisition system according to claim 1, further comprising a display module (105) for displaying the operating status of the input signal acquisition channel and the output signal acquisition channel; the display module (105) is connected with the relay module (102).
3. A method for testing an input-output signal acquisition system according to claim 1 or 2, the method comprising:
step S1-2, connecting a first port in the communication control board (1011) of the input/output module (101), a first board in the relay module (102), and a first ethernet data transmission channel formed by the first central control unit (103), and disconnecting a second port in the communication control board (1011) of the input/output module (101), a second board in the relay module (102), and a second ethernet data transmission channel formed by the second central control unit (104);
step S1-2, the first central control unit (103) sending data, the data being transmitted via the first board card in the relay module (102), the first port in the communication control board (1011), and the first bus between the communication control board (1011) and the digital quantity input board (1012);
s1-3, determining whether a first input signal acquisition channel formed by a first Ethernet data transmission channel and a first bus works normally according to the capture result of external IO equipment (301) on data;
step S1-4, interrupting the first Ethernet data transmission channel and connecting the second Ethernet data transmission channel;
step S1-5, the second central control unit (104) sending data, the data being transmitted via the second board card in the relay module (102), the second port in the communication control board (1011), and the second bus between the communication control board (1011) and the digital quantity input board (1012);
and S1-6, determining whether a second input signal acquisition channel formed by a second Ethernet data transmission channel and a second bus works normally according to the data capture result of the external IO device (301).
4. The test method of claim 3, further comprising:
step S2-1, connecting the first Ethernet data transmission channel and interrupting the second Ethernet data transmission channel;
step S2-2, the external IO device (301) sends data, and the data is transmitted through a third bus between the communication control board (1011) and the digital output board (1013), a first port in the communication control board (1011) and a first board in the relay module (102);
step S2-3, determining whether a first output signal acquisition channel formed by a third bus and a first Ethernet data transmission channel works normally according to the data capturing result of the first central control unit (103);
step S2-4, interrupting the first Ethernet data transmission channel and connecting the second Ethernet data transmission channel;
step S2-5, the external IO device (301) sends data, and the data is transmitted through a fourth bus between the communication control board (1011) and the digital output board (1013), a second port in the communication control board (1011) and a second board in the relay module (102);
and step S2-6, determining whether a second output signal acquisition channel formed by a fourth bus and a second Ethernet data transmission channel works normally according to the data capturing result of the second central control unit (104).
5. The testing method according to claim 3, wherein the determining whether the first input signal acquisition channel formed by the first ethernet data transmission channel and the first bus operates normally according to the data capture result of the external IO device (301) specifically includes:
if the IO device (301) can capture the data sent by the first central control unit (103), a first input signal acquisition channel formed by the first Ethernet data transmission channel and a first bus works normally; if the IO device (301) cannot capture the data sent by the first central control unit (103), a first input signal acquisition channel formed by the first Ethernet data transmission channel and the first bus cannot work normally.
6. The testing method according to claim 3, wherein determining whether a second input signal acquisition channel formed by the second ethernet data transmission channel and the second bus is working normally according to a data capture result of an external IO device (301) specifically includes:
if the IO device (301) can capture the data sent by the second central control unit (104), the input signal acquisition channel formed by the second Ethernet data transmission channel and the second bus works normally; and if the IO device (301) cannot capture the data sent by the second central control unit (104), a second input signal acquisition channel formed by the second Ethernet data transmission channel and the second bus cannot work normally.
7. The testing method according to claim 4, wherein the determining whether the first output signal acquisition channel formed by the third bus and the first ethernet data transmission channel is working normally according to the data capture result of the first central control unit (103) specifically comprises:
if the first central control unit (103) can capture the data sent by the IO device (301), a first output signal acquisition channel formed by a third bus and a first Ethernet data transmission channel works normally; if the first central control unit (103) cannot capture the data sent by the IO device (301), a first output signal acquisition channel formed by the third bus and the first Ethernet data transmission channel cannot work normally.
8. The testing method according to claim 4, wherein the second central control unit (104) determines whether the second output signal acquisition channel formed by the fourth bus and the second ethernet data transmission channel is working normally according to the data capturing result, and specifically includes:
if the second central control unit (104) can capture the data sent by the IO device (301), a second output signal acquisition channel formed by a fourth bus and a second Ethernet data transmission channel works normally; and if the second central control unit (104) cannot capture the data sent by the IO device (301), a second output signal acquisition channel formed by the fourth bus and the second Ethernet data transmission channel cannot work normally.
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