CN111260501A - Remote online maintenance system and method for distributed acquisition terminal - Google Patents
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Abstract
The invention discloses a remote online maintenance system and a remote online maintenance method for a distributed acquisition terminal, wherein the remote online maintenance system comprises the following steps: the main control module and the communication interface module; the communication interface module establishes communication with the distributed acquisition terminal through optical fibers or network cables in a non-power-off state of an electrical switch cabinet where the distributed acquisition terminal is located, and after the communication is established, the main control module communicates with the distributed acquisition terminal to realize the remote online maintenance function of the distributed acquisition terminal. The invention can improve the convenience of maintenance of the distributed acquisition terminal and has strong practicability and innovation.
Description
Technical Field
The invention belongs to the technical field of relay protection of power systems, and particularly relates to a remote online maintenance system and a remote online maintenance method for a distributed acquisition terminal.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The distributed wave recording system not only realizes distributed wave recording, but also has the function of low-current grounding line selection. The system comprises: supervisor and at least 1 acquisition terminal.
When distributed acquisition terminal need overhaul the maintenance, need open the cubical switchboard, need operate after the cubical switchboard has a power failure even, and then cause the transmission line to have a power failure, influence the user power consumption, this just causes overhaul maintenance work comparatively loaded down with trivial details complicacy.
Specifically, in a transformer substation, a switch cabinet chamber where a switch cabinet is located has strong current access, so that operation is dangerous to a certain extent and needs to be strictly in accordance with safety regulations; in addition, the power failure operation of the switch cabinet can cause the power failure of the power line where the switch cabinet is located, so that the use of users is influenced, and the power failure operation and maintenance personnel are very cautious to the power failure operation of the switch cabinet and need to be audited and approved. Due to the two points, the maintenance work of the distributed acquisition terminal installed on the switch cabinet is complicated and is limited by field conditions.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a remote online maintenance system for a distributed acquisition terminal, which can remotely realize the maintenance functions of parameter issuing, parameter reading, version management, program upgrading, operation condition acquisition, terminal restarting, reliability check of an optical fiber link and the like of the distributed acquisition terminal through a data interface connected with the distributed acquisition terminal under the condition that a switch cabinet is not powered off.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
a remote online overhaul and maintenance system for a distributed acquisition terminal comprises:
the main control module and the communication interface module;
the communication interface module establishes communication with the distributed acquisition terminal through optical fibers or network cables in a non-power-off state of an electrical switch cabinet where the distributed acquisition terminal is located, and after the communication is established, the main control module communicates with the distributed acquisition terminal to realize the remote online maintenance function of the distributed acquisition terminal.
The further technical scheme also comprises the following steps:
the operation display module, the power supply module and the data copying interface;
the operation display module and the data copy interface are respectively communicated with the main control module, and the power supply module respectively supplies power to the operation display module, the data copy interface, the main control module and the communication interface module.
A remote online maintenance method for a distributed acquisition terminal comprises the following steps:
the communication between the main control module and the distributed acquisition terminal realizes the remote online maintenance function of the distributed acquisition terminal;
the remote online maintenance comprises parameter reading, parameter issuing, version management, program upgrading, operation condition obtaining, system restarting and optical fiber link reliability checking.
In a further technical scheme, by executing the parameter issuing operation, the parameters required by operation can be issued to the distributed acquisition terminal:
obtaining a parameter to be issued or directly selecting a parameter file, and selecting and executing parameter issuing operation;
establishing data connection with a distributed acquisition terminal;
the main control module extracts parameters, organizes and sends down parameter messages and controls the communication interface module to send the messages;
the master control module organizes reading parameter messages, controls the communication interface module to send the messages and receives the parameter messages;
the main control module extracts parameter information from the parameter message, compares the parameter information with the issued parameters, successfully compares the parameter information with the issued parameters, and re-executes the issued parameter operation if the parameter information is not in accordance with the issued parameters.
According to the further technical scheme, parameters in use of the distributed acquisition terminal are read by executing parameter reading operation, and the specific reading process is as follows:
selecting to execute parameter reading operation;
the master control module organizes reading parameter messages, controls the communication interface module to send the messages and receives the parameter messages;
checking the message correctness of the parameter message, checking whether the message format and the CRC are correct, and extracting the parameter if the message format and the CRC are correct;
and displaying the extracted parameters on an interface and storing the parameters to form a parameter file.
According to the further technical scheme, version information of the distributed acquisition terminal can be acquired by executing version management operation, and the specific operation process is as follows:
selecting version management operation;
the main control module establishes data communication with the distributed acquisition terminal, organizes and reads version-related messages, controls the communication interface module to send the messages to the distributed acquisition terminal, and waits for receiving version information messages after the sending is finished;
checking the message correctness when the version information message is received, checking whether the message format and the CRC are correct, and extracting the version information if the message format and the CRC are correct;
and displaying the extracted version information on a system operation interface.
According to the further technical scheme, the running program of the distributed acquisition terminal is upgraded on line by executing the program upgrading operation, and the specific operation process is as follows:
selecting program upgrading operation, and selecting a program file to be upgraded;
the main control module establishes data communication with the distributed acquisition terminal and extracts program data from the selected program file to be upgraded;
the main control module organizes a program switching message and controls the communication interface module to send the message to the distributed acquisition terminal, and the operation can enable the distributed acquisition terminal to enter an upgrading mode;
after entering an upgrading mode, the distributed acquisition terminal sends a return message to the system, and after receiving the return message, the system judges whether the acquisition terminal enters the upgrading mode according to the content of the return message;
after the acquisition terminal enters an upgrading mode, a system organizes a program data upgrading message, sends upgrading data frame by frame, waits for receiving a response message when sending a frame of data, and judges whether the frame is successfully received until all program frames are sent;
after all the operations are successful, returning program upgrading success information, and ending the operations; if message errors and no response and other abnormalities occur in the middle, an upgrade failure prompt message is returned, and the operation is finished.
According to the further technical scheme, the operation log of the distributed acquisition terminal can be acquired by executing operation condition acquisition operation, and the specific operation process is as follows:
selecting an operation condition to obtain operation;
establishing data communication with a distributed acquisition terminal;
organizing and acquiring a working condition information message, and controlling a communication interface module to send the working condition information message to a distributed acquisition terminal;
after receiving a working condition information acquisition message sent by a system, the distributed acquisition terminal extracts operation log information in a storage space and organizes the operation log information into a data message sending response;
after receiving the response message, checking the correctness of the message, and checking whether the format correctness and the CRC check code are correct;
and if the response message is correct, extracting the working condition information and displaying the working condition information to an operation interface, forming a corresponding working condition log file for a user to export and use, and finishing the operation.
According to the further technical scheme, the operation of restarting the terminal is executed, the running distributed acquisition terminals are reset on line, the operation is used for recovering the shutdown of the distributed acquisition terminals, and the specific operation process is as follows:
selecting to restart the terminal operation through an operation interface;
establishing data communication with a distributed acquisition terminal;
organizing a restart terminal message, and controlling a communication interface module to send the restart terminal message to a distributed acquisition terminal;
after receiving the restart terminal message, the distributed acquisition terminal enters a restart mode and resets the distributed acquisition terminal;
after the distributed acquisition terminal is restarted, monitoring the communication state of the distributed acquisition terminal, and after the communication state is interrupted for a short time and is recovered again, judging that the distributed acquisition terminal is successfully reset;
the operation is ended.
In a further technical scheme, by executing a link reliability check operation, the reliability condition of the optical fiber or network cable link can be checked online, and the specific operation is as follows:
selecting link reliability checking operation, and inputting the number of link confirmation times required to be carried out, wherein the number of times determines how many times link data transmission correctness tests are executed;
establishing data communication with a distributed acquisition terminal;
the detection link types are divided into two types: the system comprises an optical fiber link and a network cable link, wherein if the optical fiber link is an optical fiber link, a received light intensity test is added, and if the optical fiber link is a network cable link, a link data transmission correctness test is directly carried out;
if the optical fiber link is adopted, the system reads the light intensity received by the communication interface module, and performs compliance comparison on the light intensity, if the received light intensity is within a set range, the system is judged to be normal, otherwise, the system is judged to be abnormal;
controlling a communication interface module to send a link confirmation message to a distributed acquisition terminal;
after receiving the link confirmation message, the distributed acquisition terminal extracts a message data area, performs bitwise negation operation on data, organizes the operated data into a link confirmation response message, and sends the response message;
after receiving the response message, checking the response message: checking whether the format and the length are correct; checking whether the data area is correct to carry out bit-wise negation; checking whether the CRC is correct;
and outputting a test result after the link data transmission correctness test of the set times is carried out.
The above one or more technical solutions have the following beneficial effects:
the system can remotely realize the functions of maintenance such as parameter issuing, parameter reading, version management, program upgrading, operation condition acquisition, terminal restarting, reliability inspection of the optical fiber link and the like of the distributed acquisition terminal through the data interface connected with the distributed acquisition terminal under the condition that the switch cabinet is not powered off.
The invention can improve the convenience of maintenance of the distributed acquisition terminal and has strong practicability and innovation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an overall block diagram of a system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a parameter issuing process according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating parameter reading according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating version management according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a program upgrade process according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an operation condition obtaining process according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a restart terminal according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a process of checking reliability of an optical fiber link according to an embodiment of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Specifically, the distributed wave recording system comprises a management unit and a plurality of acquisition terminals, wherein the acquisition terminals comprise a power supply, an analog quantity acquisition unit, a switching quantity acquisition unit, a B code timing unit, an FPGA (field programmable gate array) and a communication optical port. The device is mainly responsible for local signal acquisition, low current information calculation and remote transmission communication. The management machine comprises a power supply, an optical port acquisition module, an analog quantity and switching value acquisition module, a management module and a background analysis module, and is used for receiving the recording and low-current information sent by the acquisition terminal, performing recording processing, low-current grounding line selection calculation and displaying on site. The distributed wave recording system comprises a distributed acquisition terminal, wherein the distributed acquisition terminal is arranged in a switch cabinet and used for acquiring data on site and sending the data to a wave recording host. The distributed acquisition terminal is communicated with the management machine through optical fibers. There is high-voltage danger in the cubical switchboard that distributed acquisition terminal was located, and the operation cubical switchboard need be strictly operated according to safe operation flow.
Example one
The embodiment discloses a remote online maintenance system for a distributed acquisition terminal, wherein when the system is applied, an optical fiber which is originally connected to a management machine of the distributed acquisition terminal is connected to the remote online maintenance system, as shown in fig. 1, related maintenance and repair work is implemented, and after the maintenance and repair work is completed, the optical fiber is reconnected to the management machine.
Here, the optical fiber connection is also used. The distributed acquisition terminals are installed in a switch cabinet of a transformer substation, the switch cabinet is placed in a switch cabinet chamber, the management machine is installed in a screen cabinet of a main control chamber, and the management machine is communicated with the distributed acquisition terminals through optical fibers. The operation described here only requires operation near the screen cabinet where the management machine of the main control room is located, and does not require going to the switch cabinet room, and naturally does not require opening the switch cabinet door, and does not require powering off the switch cabinet. The remote mode means that the 'overhaul and maintenance system' and the 'distributed acquisition terminal' are not in the same small chamber to realize operation, and the local operation is not required to be carried out in a switch cabinet chamber.
As shown in fig. 1, the remote online service and maintenance system comprises the following modules:
a power supply module: the power supply comprises a rectification module, a voltage transformation module and a control module, is responsible for power supply conversion, converts an input power supply into a stable direct current power supply after rectification and filtering, and supplies the stable direct current power supply to other functional modules for use, wherein the input power supply supports AC85V-264V input or DC85V-375V input, and the output power supply is +/-12V and 5V output.
The main control module: the functions of man-machine interaction interface control, message sending control, record storage and the like are realized.
An operation display module: and the interface display function and the input function of operation are realized.
A communication interface module: and the communication with the distributed acquisition terminal is realized. The system is provided with an ST/LC type optical fiber interface, has 10/100/1000Mbps transmission rate self-adaptive capacity, and is internally integrated with an optical intensity monitoring unit; the system is provided with an RJ45 type network interface and has 10/100/1000Mbps transmission rate self-adaptive capability.
A data copying interface: the access capability of the storage device is provided for data copying.
According to the distributed acquisition terminal, communication with the distributed acquisition terminal can be established through optical fibers or network cables in a non-power-off state of an electrical switch cabinet where the distributed acquisition terminal is located, and a remote online maintenance function of the distributed acquisition terminal can be realized after the communication is established.
And finishing the overhaul and maintenance functions of parameter reading, parameter issuing, version management, program upgrading, operation condition acquisition, system restarting, optical fiber link reliability inspection and the like of the distributed acquisition terminal.
The distributed acquisition terminal maintenance work can be realized by realizing the functions, the existing local maintenance and troubleshooting work aiming at the distributed acquisition terminal is replaced, the system fault of the distributed wave recording system integrating the low-current grounding line selection function can be troubleshot on the site, and the fault reason is positioned.
The interface module is provided with an ST/LC type optical fiber interface, has the self-adaptive capability of 10/100/1000Mbps transmission rate, and is internally integrated with a light intensity monitoring unit; the system is provided with an RJ45 type network interface and has 10/100/1000Mbps transmission rate self-adaptive capability.
The main control module has the capability of controlling the interface module to send and receive data messages; the capability of controlling the operation display unit is provided; the method has the capability of running application software.
An operation display unit: the device is provided with a display screen for displaying operation conditions; the remote online maintenance system is provided with an operation keyboard and is used for controlling the work of the remote online maintenance system.
Example two
The embodiment discloses a remote online maintenance method for a distributed acquisition terminal, which comprises the following steps: and the distributed acquisition terminal has the functions of overhauling and maintaining such as parameter reading, parameter issuing, version management, program upgrading, operation condition acquisition, system restarting, optical fiber link reliability inspection and the like.
As shown in fig. 2, the remote online maintenance system (hereinafter referred to as "system") can issue the parameters required for operation to the distributed acquisition terminals by performing the parameter issuing operation, and the specific issuing process is as follows:
inputting parameters to be issued through a system operation interface or directly selecting a parameter file, and selecting and executing parameter issuing operation;
the system establishes data connection with the distributed acquisition terminal;
the system extracts parameters, organizes and issues parameter messages, and controls the communication interface module to send the messages;
the system organizes and reads the parameter message, controls the communication interface module to send the message and receives the parameter message;
and the system extracts the parameter information from the parameter message, compares the parameter information with the issued parameters, successfully compares the parameter information with the issued parameters, and re-executes the issued parameter operation if the parameter information is not compared with the issued parameters.
As shown in fig. 3, the system may read the parameters being used by the distributed acquisition terminal by performing a parameter reading operation, where the specific reading process is as follows:
selecting and executing parameter reading operation through an operation interface;
the system organizes and reads the parameter message, controls the communication interface module to send the message and receives the parameter message;
checking the message correctness of the parameter message, checking whether the message format and the CRC are correct, and extracting the parameter if the message format and the CRC are correct;
and displaying the extracted parameters on an interface and storing the parameters to form a parameter file.
As shown in fig. 4, the system may obtain the version information of the distributed acquisition terminal by executing the version management operation, and the specific operation process is as follows:
selecting version management operation through an operation interface;
the system establishes data communication with the distributed acquisition terminal, organizes and reads version-related messages, controls the communication interface module to send the messages to the distributed acquisition terminal, and waits for receiving version information messages after the sending is finished;
checking the message correctness when the version information message is received, checking whether the message format and the CRC are correct, and extracting the version information if the message format and the CRC are correct;
and displaying the extracted version information on a system operation interface.
As shown in fig. 5, the system can perform online upgrade on the running program of the distributed acquisition terminal by performing program upgrade operation, and the specific operation process is as follows:
selecting program upgrading operation through an operation interface, and selecting a program file to be upgraded;
the system establishes data communication with the distributed acquisition terminal and extracts program data from the selected program file to be upgraded;
the system organizes a program switching message and controls the communication interface module to send the message to the distributed acquisition terminal, and the distributed acquisition terminal can enter an upgrading mode by the operation;
after entering an upgrading mode, the distributed acquisition terminal sends a return message to the system, and after receiving the return message, the system judges whether the acquisition terminal enters the upgrading mode according to the content of the return message;
after the acquisition terminal enters an upgrading mode, a system organizes a program data upgrading message, sends upgrading data frame by frame, waits for receiving a response message when sending a frame of data, and judges whether the frame is successfully received until all program frames are sent;
after all the operations are successful, returning program upgrading success information, and ending the operations; if message errors and no response and other abnormalities occur in the middle, an upgrade failure prompt message is returned, and the operation is finished.
As shown in fig. 6, the system may obtain the operation log of the distributed acquisition terminal by executing the operation condition obtaining operation, and the specific operation process is as follows:
selecting an operation condition through an operation interface to obtain operation;
the system establishes data communication with the distributed acquisition terminal;
the system organization acquires the working condition information message and controls the communication interface module to send the message to the distributed acquisition terminal;
after receiving a working condition information acquisition message sent by a system, the distributed acquisition terminal extracts operation log information in a storage space and organizes the operation log information into a data message sending response;
after receiving the response message, the system checks the message correctness, and checks whether the format correctness and the CRC check code are correct;
and if the response message is correct, extracting the working condition information and displaying the working condition information to an operation interface, forming a corresponding working condition log file for a user to export and use, and finishing the operation.
As shown in fig. 7, the system can reset the running distributed acquisition terminals on line by executing the operation of restarting the terminals, and the operation can be used for recovering the shutdown of the distributed acquisition terminals, and the specific operation process is as follows:
selecting to restart the terminal operation through an operation interface;
the system establishes data communication with the distributed acquisition terminal;
the system organizes and restarts the terminal message, control the communication interface module to send to the distributed acquisition terminal;
after receiving the restart terminal message, the distributed acquisition terminal enters a restart mode and resets the distributed acquisition terminal;
after the distributed acquisition terminal is restarted, the system monitors the communication state of the distributed acquisition terminal, and after the communication state is interrupted for a short time and is recovered again, the distributed acquisition terminal is judged to be successfully reset;
the operation is ended.
As shown in fig. 8, the system can perform an on-line check operation on the reliability of the optical fiber or network cable link by performing the following operations:
selecting link reliability checking operation through an operation interface, and inputting the number of times of link confirmation, wherein the number of times determines how many times of link data transmission correctness tests are executed;
the system establishes data communication with the distributed acquisition terminal;
the system detects the link types and is divided into two types: the system comprises an optical fiber link and a network cable link, wherein if the optical fiber link is an optical fiber link, a received light intensity test is added, and if the optical fiber link is a network cable link, a link data transmission correctness test is directly carried out;
if the optical fiber link is adopted, the system reads the light intensity received by the communication interface module, and performs compliance comparison on the light intensity, if the received light intensity is within a set range, the system is judged to be normal, otherwise, the system is judged to be abnormal;
the system control communication interface module sends a link confirmation message to the distributed acquisition terminal;
after receiving the link confirmation message, the distributed acquisition terminal extracts a message data area, performs bitwise negation operation on data, organizes the operated data into a link confirmation response message, and sends the response message;
after receiving the response message, the system checks the response message: checking whether the format and the length are correct; checking whether the data area is correct to carry out bit-wise negation; checking whether the CRC is correct;
and after the system performs the link data transmission correctness test for the set times, outputting a test result.
On the basis of the technical scheme, the invention can be further improved as follows.
The power module is additionally provided with a battery, and the system can work without depending on an external power supply, so that the convenience of the system is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a long-range online maintenance system that overhauls to distributed acquisition terminal which characterized by includes:
the main control module and the communication interface module;
the communication interface module establishes communication with the distributed acquisition terminal through optical fibers or network cables in a non-power-off state of an electrical switch cabinet where the distributed acquisition terminal is located, and after the communication is established, the main control module communicates with the distributed acquisition terminal to realize the remote online maintenance function of the distributed acquisition terminal.
2. The remote online service and maintenance system for the distributed acquisition terminal as claimed in claim 1, further comprising:
the operation display module, the power supply module and the data copying interface;
the operation display module and the data copy interface are respectively communicated with the main control module, and the power supply module respectively supplies power to the operation display module, the data copy interface, the main control module and the communication interface module.
3. A remote online maintenance method for a distributed acquisition terminal is characterized by comprising the following steps:
the communication between the main control module and the distributed acquisition terminal realizes the remote online maintenance function of the distributed acquisition terminal;
the remote online maintenance comprises parameter reading, parameter issuing, version management, program upgrading, operation condition obtaining, system restarting and optical fiber link reliability checking.
4. A remote online maintenance method for distributed acquisition terminals according to claim 3, wherein the parameters required for operation can be issued to the distributed acquisition terminals by performing the parameter issuing operation:
obtaining a parameter to be issued or directly selecting a parameter file, and selecting and executing parameter issuing operation;
establishing data connection with a distributed acquisition terminal;
the main control module extracts parameters, organizes and sends down parameter messages and controls the communication interface module to send the messages;
the master control module organizes reading parameter messages, controls the communication interface module to send the messages and receives the parameter messages;
the main control module extracts parameter information from the parameter message, compares the parameter information with the issued parameters, successfully compares the parameter information with the issued parameters, and re-executes the issued parameter operation if the parameter information is not in accordance with the issued parameters.
5. A remote online maintenance method for distributed acquisition terminals as claimed in claim 3, wherein the parameters being used by the distributed acquisition terminals are read by performing a parameter reading operation, the specific reading process is as follows:
selecting to execute parameter reading operation;
the master control module organizes reading parameter messages, controls the communication interface module to send the messages and receives the parameter messages;
checking the message correctness of the parameter message, checking whether the message format and the CRC are correct, and extracting the parameter if the message format and the CRC are correct;
and displaying the extracted parameters on an interface and storing the parameters to form a parameter file.
6. A remote online maintenance method for a distributed acquisition terminal according to claim 3, wherein the version information of the distributed acquisition terminal can be obtained by performing a version management operation, which comprises the following steps:
selecting version management operation;
the main control module establishes data communication with the distributed acquisition terminal, organizes and reads version-related messages, controls the communication interface module to send the messages to the distributed acquisition terminal, and waits for receiving version information messages after the sending is finished;
checking the message correctness when the version information message is received, checking whether the message format and the CRC are correct, and extracting the version information if the message format and the CRC are correct;
and displaying the extracted version information on a system operation interface.
7. The remote online maintenance method for the distributed acquisition terminal according to claim 3, wherein the running program of the distributed acquisition terminal is upgraded online by executing a program upgrading operation, and the specific operation process is as follows:
selecting program upgrading operation, and selecting a program file to be upgraded;
the main control module establishes data communication with the distributed acquisition terminal and extracts program data from the selected program file to be upgraded;
the main control module organizes a program switching message and controls the communication interface module to send the message to the distributed acquisition terminal, and the operation can enable the distributed acquisition terminal to enter an upgrading mode;
after entering an upgrading mode, the distributed acquisition terminal sends a return message to the system, and after receiving the return message, the system judges whether the acquisition terminal enters the upgrading mode according to the content of the return message;
after the acquisition terminal enters an upgrading mode, a system organizes a program data upgrading message, sends upgrading data frame by frame, waits for receiving a response message when sending a frame of data, and judges whether the frame is successfully received until all program frames are sent;
after all the operations are successful, returning program upgrading success information, and ending the operations; if message errors and no response and other abnormalities occur in the middle, an upgrade failure prompt message is returned, and the operation is finished.
8. The method as claimed in claim 3, wherein the operation log of the distributed acquisition terminal is obtained by performing an operation condition obtaining operation, and the specific operation process is as follows:
selecting an operation condition to obtain operation;
establishing data communication with a distributed acquisition terminal;
organizing and acquiring a working condition information message, and controlling a communication interface module to send the working condition information message to a distributed acquisition terminal;
after receiving a working condition information acquisition message sent by a system, the distributed acquisition terminal extracts operation log information in a storage space and organizes the operation log information into a data message sending response;
after receiving the response message, checking the correctness of the message, and checking whether the format correctness and the CRC check code are correct;
and if the response message is correct, extracting the working condition information and displaying the working condition information to an operation interface, forming a corresponding working condition log file for a user to export and use, and finishing the operation.
9. A remote online maintenance method for distributed acquisition terminals according to claim 3, wherein the running distributed acquisition terminals are reset online by executing a restart terminal operation, which is used for recovery after the shutdown of the distributed acquisition terminals, and the specific operation process is as follows:
selecting to restart the terminal operation through an operation interface;
establishing data communication with a distributed acquisition terminal;
organizing a restart terminal message, and controlling a communication interface module to send the restart terminal message to a distributed acquisition terminal;
after receiving the restart terminal message, the distributed acquisition terminal enters a restart mode and resets the distributed acquisition terminal;
after the distributed acquisition terminal is restarted, monitoring the communication state of the distributed acquisition terminal, and after the communication state is interrupted for a short time and is recovered again, judging that the distributed acquisition terminal is successfully reset;
the operation is ended.
10. A remote online maintenance method for a distributed acquisition terminal according to claim 3, wherein the link reliability check operation is performed to check the reliability of the optical fiber or network cable link online, and the method comprises the following specific operations:
selecting link reliability checking operation, and inputting the number of link confirmation times required to be carried out, wherein the number of times determines how many times link data transmission correctness tests are executed;
establishing data communication with a distributed acquisition terminal;
the detection link types are divided into two types: the system comprises an optical fiber link and a network cable link, wherein if the optical fiber link is an optical fiber link, a received light intensity test is added, and if the optical fiber link is a network cable link, a link data transmission correctness test is directly carried out;
if the optical fiber link is adopted, the system reads the light intensity received by the communication interface module, and performs compliance comparison on the light intensity, if the received light intensity is within a set range, the system is judged to be normal, otherwise, the system is judged to be abnormal;
controlling a communication interface module to send a link confirmation message to a distributed acquisition terminal;
after receiving the link confirmation message, the distributed acquisition terminal extracts a message data area, performs bitwise negation operation on data, organizes the operated data into a link confirmation response message, and sends the response message;
after receiving the response message, checking the response message: checking whether the format and the length are correct; checking whether the data area is correct to carry out bit-wise negation; checking whether the CRC is correct;
and outputting a test result after the link data transmission correctness test of the set times is carried out.
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