CN213072692U - Integrated diagnosis and multiplexing serial communication master station management device - Google Patents

Integrated diagnosis and multiplexing serial communication master station management device Download PDF

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Publication number
CN213072692U
CN213072692U CN202022120381.0U CN202022120381U CN213072692U CN 213072692 U CN213072692 U CN 213072692U CN 202022120381 U CN202022120381 U CN 202022120381U CN 213072692 U CN213072692 U CN 213072692U
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circuit
multiplexing
management device
cpu
serial communication
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贺纪元
李云贺
何文琦
梁维洋
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Huaneng Xinhua Power Generation Co ltd
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Huaneng Xinhua Power Generation Co ltd
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Abstract

The utility model discloses an integrated diagnosis and multiplexing serial communication master station management device, including software part and hardware part, the hardware part include relay output circuit, input terminal, port multiplex circuit A, CPU, output terminal, interface circuit, port multiplex circuit B and power supply circuit, interface circuit access upper reaches serial communication link, port multiplex circuit B access lower reaches serial communication link, port multiplex circuit A with the data transmission to CPU's that monitors communication circuit, relay output circuit be used for carrying out the trouble node and restart the release information outward. Compared with the prior art, the utility model the advantage lie in: the fault position can be judged quickly, the node state can be monitored in real time, the parameters of the production equipment are effectively monitored, the accuracy of parameter adjustment of operators is effectively ensured, and the safety production is ensured.

Description

Integrated diagnosis and multiplexing serial communication master station management device
Technical Field
The utility model relates to a serial communication main website management equipment technical field specifically indicates an integrated diagnosis and multiplexing serial communication main website management device.
Background
With the development of computer networking and hierarchical distributed application systems of microcomputers, the function of communication is more and more important, communication refers to information transmission between a computer and the outside, including transmission between computers, and also including transmission between computers and external devices, such as terminals, printers, magnetic disks, and the like, and in the field of communication, data communication is divided into the following communication modes according to the number of data bits transmitted each time: parallel communication and serial communication, serial communication refers to the serial transfer of data between a host computer and peripheral equipment and between a host system and a host system. Data is transmitted sequentially bit by bit using a data line, each bit of data occupying a fixed length of time. It only needs a few lines to exchange information between systems, especially suitable for remote communication between computers and peripherals. In serial communication, each character sent and received is actually transmitted one bit at a time, and each bit is 1 or 0.
Serial communication is divided into synchronous communication and asynchronous communication, the synchronous communication is a communication mode of continuously and serially transmitting data, only one frame of information is transmitted in one communication, and the information frame is different from a character frame in the asynchronous communication and usually contains a plurality of data characters. They are composed of sync characters, data characters and check characters CRC. Where the sync character is located at the beginning of the frame for confirming the start of the data character. The number of the data characters behind the synchronous characters is not limited and is determined by the length of the data block to be transmitted; the number of the check characters is 1 to 2, and the check characters are used for checking the correctness of the received character sequence by the receiving end. A disadvantage of synchronous communication is that it requires that the transmit clock and the receive clock remain strictly synchronized. There are two important metrics in asynchronous communications: character frame format and baud rate. Data is typically transmitted in character or byte units constituting character frames. The character frames are sent frame by the sending end and received frame by the receiving equipment through the transmission line. The sending end and the receiving end can control the sending and receiving of data by respective clocks, and the two clock sources are independent of each other and are not synchronous with each other. When the receiving end detects the low level logic '0', namely the start bit of the character frame, sent from the transmission line, the receiving end determines that the sending end has started sending data, and when the receiving end receives the stop bit in the character frame, the receiving end knows that one frame of characters has been sent.
The serial communication is characterized in that: the way data is transmitted sequentially bit by bit on a single one-bit wide transmission line is called serial communication. In parallel communication, one byte of 8-bit data is transmitted from a source to a destination simultaneously on 8 parallel transmission lines; in the serial communication scheme, data is transmitted sequentially bit by bit on a single 1-bit wide transmission line. Such a byte of data is transferred sequentially one bit from the lower bit to the upper bit 8 times. It can be seen that serial communication is characterized as follows: 1. this is obvious, saving transmission lines. This feature is particularly important especially in telecommunications. This is also a major advantage of serial communication; 2. the data transfer efficiency is low. This is also evident in comparison to parallel communication. This is also a major disadvantage of serial communication. For example: one byte is transmitted, and the parallel communication requires only 1T of time, while the serial communication requires at least 8T of time. It follows that serial communication is suitable for long distance transmission, which can range from a few meters to thousands of kilometers. For long distance, low rate communications, serial communications are often the only option. Parallel communication is suitable for short distance, high rate data transfer, typically over transmission distances of less than 30 meters. It is particularly worth mentioning that the existing public telephone network is a general long-distance communication medium, which is designed for transmitting voice signals, but makes the existing public telephone network system provide a convenient and practical communication line for serial data communication by using the modulation and demodulation technology.
The serial communication workplace is often in complex environments such as strong electricity and outdoor environment, and the distance between each communication party is generally long, so that the serial communication workplace is easily interfered. Serial communication, when the baud rate is fixed, the transmission time of data bits is relatively short, and due to the sampling/obtaining characteristics of the data bits of the serial communication, bit information is interfered, and the whole byte data is error information.
Serial communication is still applied to factory equipment in large quantity, at least 32 nodes can be mounted on one communication bus, the number of mounted nodes is determined according to different communication protocols and communication rates, when one node on the bus fails, the communication quality of a slave station mounted behind the node can be influenced, even rear equipment is off-line, therefore, in order to carry out communication diagnosis on a communication link, quickly judge the fault position, monitor the node state in real time, effectively monitor production equipment parameters in time, simultaneously, the equipment for communication of the current link is not influenced, the accuracy of parameter adjustment of operators is effectively ensured, and safe production is ensured, a serial communication master station management device integrating diagnosis and multiplexing is required to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above technical defect, the utility model provides an integrated diagnosis and multiplexing serial communication main website management device, many sub-station management equipment on can monitoring and management communication bus, for the user provides real-time state monitoring and data management, can carry out communication diagnosis to the communication link, do not influence the equipment of current link communication simultaneously again, can the rapid judgement fault location, real time monitoring node state, in time effective control is carried out to production facility parameter, effectively ensure the accuracy of operation personnel parameter adjustment, ensure the safety in production.
In order to solve the technical problem, the utility model provides a technical scheme does: a serial communication master station management device integrating diagnosis and multiplexing comprises a software part and a hardware part, wherein the hardware part comprises a relay output circuit, an input terminal, a port multiplexing circuit A, CPU, an output terminal, an interface circuit, a port multiplexing circuit B and a power supply circuit, the interface circuit is connected to an upstream serial communication link, the port multiplexing circuit B is connected to a downstream serial communication link, the port multiplexing circuit A transmits monitored data to the communication circuit of a CPU, the relay output circuit is used for restarting a fault node, and the software part is used for externally issuing information.
Furthermore, the CPU is an operation core.
Furthermore, the CPU cooperates with the relay output circuit, the port multiplexing circuit A, the interface circuit, the port multiplexing circuit B and the power supply circuit to form a core of a hardware part.
Further, the CPU adopts an embedded ARMA17 CPU.
Furthermore, the interface circuit and the port multiplexing circuit B do not change any message when being respectively connected into the upstream serial communication link and led out of the downstream serial communication link.
Further, the CPU performs data processing on the monitored data, and performs data analysis.
Furthermore, the CPU detects a node fault or a plurality of node faults and restarts the node through the relay output circuit.
Furthermore, the relay output circuit is regulated to have restarting times.
Further, when the node fault still cannot be recovered after the relay output circuit reaches the specified restart times, the CPU automatically reports the fault information to the software part.
Furthermore, the software part releases information to the outside through MQTT and provides alarming and fault analysis information.
Compared with the prior art, the utility model the advantage lie in: the device is composed of two parts, the hardware part adopts an embedded ARMA17CPU as an operation core, a power supply circuit, an interface circuit, a port multiplexing circuit and a relay output part to form a hardware core, an upstream serial communication link is accessed through the interface circuit, a downstream serial communication link is led out through the port multiplexing circuit B, no change is made to a message, simultaneously, monitoring data is transmitted to the communication circuit of the CPU in the port multiplexing circuit A for data processing and data analysis by the CPU, when a certain node fault or a plurality of node faults are detected, the nodes are restarted through the relay output part, the nodes still cannot be recovered after the specified restart times are reached, the CPU automatically reports the fault information to the software part, the software part issues the information to the outside through an instant messaging protocol to provide information such as alarm and fault analysis, and the like, and can monitor and manage a plurality of substation management devices on a communication bus, the system provides real-time state monitoring and data management for a user, can carry out communication diagnosis on a communication link, does not influence equipment for communication of the current link, can quickly judge the fault position, monitors the node state in real time, timely and effectively monitors production equipment parameters, effectively ensures the accuracy of parameter adjustment of operating personnel, and ensures safe production.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
As shown in the figure: 1. relay output circuit, 2, input terminal, 3, downstream serial communication link, 4, port multiplexing circuit A, 5, CPU, 6, upstream serial communication link, 7, output terminal, 8, interface circuit, 9, port multiplexing circuit B, 10, power supply circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
A serial communication master station management device integrating diagnosis and multiplexing comprises a software part and a hardware part, wherein the hardware part comprises a relay output circuit 1, an input terminal 2, a port multiplexing circuit A4, a CPU5, an output terminal 7, an interface circuit 8, a port multiplexing circuit B9 and a power supply circuit 10, the CPU5 adopts an embedded ARMA17CPU as an operation core, the CPU5 is matched with the relay output circuit 1, the port multiplexing circuit A4, the interface circuit 8, the port multiplexing circuit B9 and the power supply circuit 10 to form a core of the hardware part, the interface circuit 8 is connected into an upstream serial communication link 6, the port multiplexing circuit B9 is connected into a downstream serial communication link 3 without changing messages, the port multiplexing circuit A4 transmits monitored data to a communication circuit of the CPU5, and the CPU5 processes the monitored data, and performing data analysis, when the CPU5 detects a node fault or multiple node faults, restarting the node through the relay output circuit 1, wherein the relay output circuit 1 is used for restarting the fault node, the number of restart times is specified for the relay output circuit 1, when the number of restart times specified for the relay output circuit 1 is 2, if the node fault cannot be recovered after the relay output circuit 1 is restarted for 2 times, the CPU5 automatically reports fault information to the software part, and the software part externally issues information through MQTT and provides alarm and fault analysis information.
Example two
A serial communication master station management device integrating diagnosis and multiplexing comprises a software part and a hardware part, wherein the hardware part comprises a relay output circuit 1, an input terminal 2, a port multiplexing circuit A4, a CPU5, an output terminal 7, an interface circuit 8, a port multiplexing circuit B9 and a power supply circuit 10, the CPU5 adopts an embedded ARMA17CPU as an operation core, the CPU5 is matched with the relay output circuit 1, the port multiplexing circuit A4, the interface circuit 8, the port multiplexing circuit B9 and the power supply circuit 10 to form a core of the hardware part, the interface circuit 8 is connected into an upstream serial communication link 6, the port multiplexing circuit B9 is connected into a downstream serial communication link 3 without changing messages, the port multiplexing circuit A4 transmits monitored data to a communication circuit of the CPU5, and the CPU5 processes the monitored data, and performing data analysis, when the CPU5 detects a node fault or multiple node faults, restarting the node through the relay output circuit 1, wherein the relay output circuit 1 is used for restarting the fault node, the number of restart times is specified for the relay output circuit 1, when the number of restart times specified for the relay output circuit 1 is 3, if the node fault cannot be recovered after the relay output circuit 1 is restarted for 3 times, the CPU5 automatically reports fault information to the software part, and the software part externally issues information through MQTT and provides alarm and fault analysis information.
EXAMPLE III
A serial communication master station management device integrating diagnosis and multiplexing comprises a software part and a hardware part, wherein the hardware part comprises a relay output circuit 1, an input terminal 2, a port multiplexing circuit A4, a CPU5, an output terminal 7, an interface circuit 8, a port multiplexing circuit B9 and a power supply circuit 10, the CPU5 adopts an embedded ARMA17CPU as an operation core, the CPU5 is matched with the relay output circuit 1, the port multiplexing circuit A4, the interface circuit 8, the port multiplexing circuit B9 and the power supply circuit 10 to form a core of the hardware part, the interface circuit 8 is connected into an upstream serial communication link 6, the port multiplexing circuit B9 is connected into a downstream serial communication link 3 without changing messages, the port multiplexing circuit A4 transmits monitored data to a communication circuit of the CPU5, and the CPU5 processes the monitored data, and performing data analysis, when the CPU5 detects a node fault or multiple node faults, restarting the node through the relay output circuit 1, wherein the relay output circuit 1 is used for restarting the fault node, the number of restart times is specified for the relay output circuit 1, when the number of restart times specified for the relay output circuit 1 is 5, if the node fault cannot be recovered after the relay output circuit 1 is restarted for 5 times, the CPU5 automatically reports fault information to the software part, and the software part externally issues information through MQTT and provides alarm and fault analysis information.
Example four
A serial communication master station management device integrating diagnosis and multiplexing comprises a software part and a hardware part, wherein the hardware part comprises a relay output circuit 1, an input terminal 2, a port multiplexing circuit A4, a CPU5, an output terminal 7, an interface circuit 8, a port multiplexing circuit B9 and a power supply circuit 10, the CPU5 adopts an embedded ARMA17CPU as an operation core, the CPU5 is matched with the relay output circuit 1, the port multiplexing circuit A4, the interface circuit 8, the port multiplexing circuit B9 and the power supply circuit 10 to form a core of the hardware part, the interface circuit 8 is connected into an upstream serial communication link 6, the port multiplexing circuit B9 is connected into a downstream serial communication link 3 without changing messages, the port multiplexing circuit A4 transmits monitored data to a communication circuit of the CPU5, and the CPU5 processes the monitored data, and performing data analysis, when the CPU5 detects a node fault or multiple node faults, restarting the node through the relay output circuit 1, wherein the relay output circuit 1 is used for restarting the fault node, the number of restart times is specified for the relay output circuit 1, when the number of restart times specified for the relay output circuit 1 is 7, if the node fault cannot be recovered after the relay output circuit 1 is restarted for 7 times, the CPU5 automatically reports fault information to the software part, and the software part externally issues information through MQTT and provides alarm and fault analysis information.
The working principle is as follows: the device is composed of two parts, the hardware part adopts an embedded ARMA17CPU as an operation core, a power supply circuit, an interface circuit, a port multiplexing circuit and a relay output part to form a hardware core, an upstream serial communication link is accessed through the interface circuit, a downstream serial communication link is led out through the port multiplexing circuit B, no change is made to a message, simultaneously, monitoring data is transmitted to the communication circuit of the CPU in the port multiplexing circuit A for data processing and data analysis by the CPU, when a certain node fault or a plurality of node faults are detected, the nodes are restarted through the relay output part, the nodes still cannot be recovered after the specified restart times are reached, the CPU automatically reports the fault information to the software part, the software part issues the information to the outside through an instant messaging protocol to provide information such as alarm and fault analysis, and the like, and can monitor and manage a plurality of substation management devices on a communication bus, the system provides real-time state monitoring and data management for a user, can carry out communication diagnosis on a communication link, does not influence equipment for communication of the current link, can quickly judge the fault position, monitors the node state in real time, timely and effectively monitors production equipment parameters, effectively ensures the accuracy of parameter adjustment of operating personnel, and ensures safe production.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (10)

1. A serial communication master station management device integrating diagnosis and multiplexing is characterized in that: the intelligent monitoring system comprises a software part and a hardware part, wherein the hardware part comprises a relay output circuit (1), an input terminal (2), a port multiplexing circuit A (4), a CPU (5), an output terminal (7), an interface circuit (8), a port multiplexing circuit B (9) and a power supply circuit (10), the interface circuit (8) is connected with an upstream serial communication link (6), the port multiplexing circuit B (9) is connected with a downstream serial communication link (3), the port multiplexing circuit A (4) transmits monitored data to the communication circuit of the CPU (5), the relay output circuit (1) is used for restarting a fault node, and the software part is used for externally releasing information.
2. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: the CPU (5) is an operation core.
3. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: the CPU (5) is matched with the relay output circuit (1), the port multiplexing circuit A (4), the interface circuit (8), the port multiplexing circuit B (9) and the power circuit (10) to form a core of a hardware part.
4. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: the CPU (5) adopts an embedded ARMA17 CPU.
5. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: the interface circuit (8) and the port multiplexing circuit B (9) do not change the message when being respectively connected into the upstream serial communication link (6) and led out of the downstream serial communication link (3).
6. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: and the CPU (5) performs data processing on the monitored data and performs data analysis.
7. The integrated diagnostic and multiplexing serial communications master management device of claim 6, wherein: the CPU (5) detects a node fault or a plurality of node faults and restarts the node through the relay output circuit (1).
8. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: the relay output circuit (1) is specified with restart times.
9. The integrated diagnostic and multiplexing serial communications master management device of claim 8, wherein: when the node fault still cannot be recovered after the relay output circuit (1) reaches the specified restart times, the CPU (5) automatically reports the fault information to the software part.
10. The integrated diagnostic and multiplexing serial communications master management device of claim 1, wherein: the software part releases information to the outside through MQTT and provides alarming and fault analysis information.
CN202022120381.0U 2020-09-24 2020-09-24 Integrated diagnosis and multiplexing serial communication master station management device Active CN213072692U (en)

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Application Number Priority Date Filing Date Title
CN202022120381.0U CN213072692U (en) 2020-09-24 2020-09-24 Integrated diagnosis and multiplexing serial communication master station management device

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CN213072692U true CN213072692U (en) 2021-04-27

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