An industrial field distributed intelligent bus communication station

Abstract

The utility model discloses an industrial field distributed intelligent bus communication station, including electrical cabinet, a plurality of card rails are equipped in the electrical cabinet for installing electrical components, and the electrical components of installation include redundancy power module, embedded data acquisition station, protocol converter, redundancy input module and active terminal module, the acousto optic alarm of electrical cabinet top outside is equipped with, redundancy input module is connected with active terminal module through embedded data acquisition station, protocol converter and forms redundancy communication link, and the bus from station equipment of production field is accessed in redundancy communication link in proper order, and embedded data acquisition station is connected through redundancy communication interface and bus communication network, redundancy power module, protocol converter, redundancy input module, active terminal module are connected through embedded data acquisition station and acousto optic alarm electrically and form linkage cooperation, and the environmental compatibility and the interference immunity are strengthened, and through redundancy power supply and redundancy link, improve reliability.

Description

Technical Field

[0001] This utility model relates to the field of communication station technology, and in particular to an industrial field distributed intelligent bus communication station. Background Technology

[0002] In recent years, the level of automation applications in various industrial scenarios has significantly improved. In the entire distributed control system, industrial field signal acquisition is a crucial link in industrial automation, and with increasing control complexity and scale, the number of signals requiring acquisition also increases. Traditionally, all field signals are connected to the I / O modules of the centralized control system in the electronics room via multi-core control cables for data acquisition and processing. This method is characterized by a large number of cables, crowded I / O modules, complex construction, large footprint, and high investment costs.

[0003] Another approach is to use a simple fieldbus network, where the DPU controller and communication master station are installed in the electronics room, while fieldbus communication devices such as active terminating resistors and protocol converters are installed in the industrial field. Signals are networked by equipment area and then connected to the electronics room via fiber optic cables. This method can solve the drawbacks of traditional signal processing modes and address issues such as limited signal transmission distance and signal attenuation. However, in harsh industrial environments (such as open air, lightning strikes, dust, high temperatures, low temperatures, humidity, direct sunlight, vibration, and electromagnetic interference), the reliability of its physical links and communication components is poor. It cannot simultaneously balance economy and reliability, and it is difficult to meet the production requirements of various complex industrial sites (such as thermal power plants and chemical plants).

[0004] Therefore, it has become increasingly important to solve the reliability problem of industrial fieldbus devices, so as to ensure both economic efficiency and physical protection and real-time health monitoring of communication link devices. Utility Model Content

[0005] This utility model provides an industrial field distributed intelligent bus communication station, which aims to solve the problems mentioned above. The existing communication station components are exposed, which result in poor reliability in harsh environments. The physical links and communication components are also unreliable, making it impossible to simultaneously achieve both economy and reliability. This makes it difficult to meet the production requirements of various complex industrial sites, such as automatic warnings.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An industrial field distributed intelligent bus communication station includes an electrical cabinet, which has several rails for installing electrical components. The installed electrical components include a redundant power supply module, an embedded data acquisition station, a protocol converter, a redundant input module, and an active terminal module. An audible and visual alarm is provided on the top outer side of the electrical cabinet.

[0008] The redundant input module is connected to the active terminal module through the embedded data acquisition station and protocol converter to form a redundant communication link. The bus slave devices in the production site are connected to the redundant communication link in sequence, and the embedded data acquisition station is connected to the bus communication network through the redundant communication interface.

[0009] The redundant power supply module, protocol converter, redundant input module, and active terminal module are electrically connected to the audible and visual alarm through an embedded data acquisition station to form a coordinated operation.

[0010] Preferably, the rails are at least four in number and are all arranged horizontally.

[0011] More preferably, redundant power supply modules are sequentially installed on the first rail;

[0012] The second rail is equipped with a protocol converter and an embedded data acquisition station in sequence.

[0013] The third rail is equipped with a photoelectric signal converter with redundant input modules;

[0014] An active terminal module is installed on the fourth rail.

[0015] Furthermore, the redundant power supply module is electrically connected to the embedded data acquisition station, protocol converter, redundant input module, active terminal module, and audible and visual alarm to provide redundant power.

[0016] Furthermore, the redundant power supply module includes AC terminals, DC terminals, a first air circuit breaker, a second air circuit breaker, a first power supply module, and a second power supply module, which are sequentially installed on the rail.

[0017] The external power supply is introduced through the AC terminal block and connected to the first and second air circuit breakers respectively. The first and second air circuit breakers are connected to form a redundant circuit breaker. The first air circuit breaker is connected in series with the corresponding first power module, and the second air circuit breaker is connected in series with the corresponding second power module. The first and second power modules are connected to the same DC terminal block respectively to output dual power supplies to form a redundant power supply. The redundant power supply is connected to the embedded data acquisition station, protocol converter, redundant input module, active terminal module and audible and visual alarm for redundant input.

[0018] Specifically, the redundant input module includes a first optical cable terminal box and a second optical cable terminal box respectively located on both sides of the electrical cabinet. One external communication optical fiber passes through the first optical cable terminal box and is connected to the corresponding first photoelectric signal converter, and the other external communication optical fiber passes through the second optical cable terminal box and is connected to the corresponding second photoelectric signal converter. Both the first and second photoelectric signal converters are connected to an embedded data acquisition station. The embedded data acquisition station outputs output signals corresponding one-to-one with the two photoelectric signal converters after passing through a protocol converter.

[0019] More specifically, the active terminal module includes a first active terminal resistor and a second active terminal resistor. The output signal of the protocol converter corresponding to the first photoelectric signal converter is connected to the first active terminal resistor through a corresponding physical link. The output signal of the protocol converter corresponding to the second photoelectric signal converter is connected to the second active terminal resistor through a corresponding physical link. The two physical links form a redundant communication link. The bus slave devices in the production site are connected in parallel to the redundant communication link in sequence.

[0020] Preferably, the embedded data acquisition station supports the Profibus DP communication protocol and is equipped with corresponding redundant communication interfaces.

[0021] Preferably, the installed electrical components also include a temperature measuring element, which is mounted on a rail for real-time monitoring of the cabinet temperature. The temperature measuring element is electrically connected to an audible and visual alarm via an embedded data acquisition station to form a linkage mechanism.

[0022] The beneficial effects of this utility model are:

[0023] 1. Increased environmental compatibility: The distributed intelligent bus communication station adopts a fully enclosed installation method. Except for the audible and visual alarm for warning, all other electrical components are installed in the electrical cabinet, which improves the physical protection capability and can effectively cope with complex environments such as lightning strikes, dust, high temperature, low temperature, humidity, vibration, and electromagnetic interference, making its installation location and method more compatible with various complex industrial sites.

[0024] 2. Increased ease of maintenance: The distributed intelligent bus communication station centrally arranges and supplies power to various communication components and modules in the Profibus DP network, improving the efficiency of inspection, maintenance and management; at the same time, the introduction of an embedded data acquisition station enables 24-hour health monitoring and fault early warning of equipment within the station, preventing problems before they occur.

[0025] 3. Increased physical reliability: The internal design of the distributed intelligent bus communication station realizes power redundancy, physical link redundancy, signal processing redundancy, communication component redundancy, and fault monitoring redundancy, which ensures that a single network failure does not affect the stability of the entire bus slave device.

[0026] 4. Increased communication anti-interference capability: Thanks to the environmental compatibility of the distributed intelligent bus communication station, the installation location can be close to the industrial site to minimize the laying distance of twisted pair shielded cables in complex production environments, reducing construction and maintenance workload; at the same time, it reduces the probability of crossing complex electromagnetic environments such as high-voltage cables and frequency converters, improving the quality of communication messages and the reliability of physical links. Attached Figure Description

[0027] Figure 1 These are the front view, front left view, and front right view of the communication station of this utility model;

[0028] Figure 2 This is a schematic diagram of the cabinet connection of the station redundant bus communication network of this utility model;

[0029] Figure 3 This is a schematic diagram of the system connection of the station redundant bus communication network of this utility model;

[0030] Figure 4 This is a connection diagram of the redundant power supply module within the station according to this utility model;

[0031] Figure 5 A connection diagram illustrating the channel configuration of the embedded data acquisition station within the station according to this utility model;

[0032] In the diagram: JD, AC terminal block;

[0033] 24ZD, DC terminal block;

[0034] 1K, First air circuit breaker; 2K, Second air circuit breaker;

[0035] DY1, First power supply module; DY2, Second power supply module;

[0036] DU-1, Embedded Data Acquisition Station;

[0037] FPL1, Protocol Converter;

[0038] OPL1, First photoelectric signal converter; OPL2, Second photoelectric signal converter;

[0039] T2, first active terminating resistor; T1, second active terminating resistor;

[0040] OTB1, First Optical Cable Terminal Box; OTB2, Second Optical Cable Terminal Box;

[0041] JL-1, Audible and visual alarm;

[0042] PT100, temperature sensing element. Detailed Implementation

[0043] The embodiments will be further described below with reference to the accompanying drawings.

[0044] like Figures 1-5 As shown in the preferred embodiment 1, an industrial field distributed intelligent bus communication station includes an electrical cabinet. The electrical cabinet is provided with several rails for installing electrical components. The installed electrical components include a redundant power supply module, an embedded data acquisition station DU-1, a protocol converter FPL1, a redundant input module, and an active terminal module. An audible and visual alarm JL-1 is provided on the top outer side of the electrical cabinet.

[0045] The redundant input module is connected to the active terminal module through the embedded data acquisition station DU-1 and the protocol converter FPL1 to form a redundant communication link. The bus slave devices in the production site are connected to the redundant communication link in sequence, and the embedded data acquisition station DU-1 is connected to the bus communication network through the redundant communication interface.

[0046] The redundant power supply module, protocol converter FPL1, redundant input module, and active terminal module are electrically connected to the audible and visual alarm JL-1 through the embedded data acquisition station DU-1 to form a linkage mechanism.

[0047] The distributed intelligent bus communication station adopts a fully enclosed installation method. Except for the audible and visual alarm for warning, all other electrical components are installed in the electrical cabinet, which improves the physical protection capability and can effectively cope with complex environments such as lightning strikes, dust, high temperature, low temperature, humidity, vibration, and electromagnetic interference, making its installation location and method more compatible with various complex industrial sites.

[0048] The distributed intelligent bus communication station centrally arranges and powers various communication components and modules in the Profibus DP network, improving the efficiency of inspection, maintenance and management; at the same time, it introduces an embedded data acquisition station, which can realize 24-hour health monitoring and fault early warning of equipment in the station, preventing problems before they occur.

[0049] The internal design of the distributed intelligent bus communication station realizes power redundancy, physical link redundancy, signal processing redundancy, communication component redundancy, and fault monitoring redundancy, which ensures that a single network failure does not affect the stability of the entire bus slave device.

[0050] Thanks to the environmental compatibility of the distributed intelligent bus communication station, the installation location can be close to the industrial site, so as to minimize the laying distance of twisted pair shielded cables in the complex production environment, reducing the amount of construction and maintenance; at the same time, it reduces the probability of crossing complex electromagnetic environments such as high-voltage cables and frequency converters, improving the quality of communication messages and the reliability of physical links.

[0051] As a preferred embodiment 2, the rails are at least four in number and are all arranged horizontally.

[0052] More preferably, the electrical cabinet is an existing electrical cabinet, consisting of a front-opening cabinet door, a cabinet top, a cabinet bottom, two side panels, and a back panel, and is treated with anti-corrosion paint; the cabinet door is sealed with rubber rings around its perimeter, the upper surface of the cabinet top has two 60° slopes, and a sound and light alarm device is fixed thereon; the cabinet bottom is equipped with four damping shock absorbers and has an internal grounding copper busbar; the bottom has three independent cable holes reserved for optical fiber, power supply, and twisted pair cable;

[0053] The back panel is fitted with four metal rails from top to bottom;

[0054] Redundant power supply modules are installed sequentially on the first rail; two unit terminal blocks JD and 24ZD are installed on the left side of the rail, with AC and DC arranged separately; two air circuit breakers 1K and 2K and two power modules DY1 and DY2 are installed on the right side of the rail.

[0055] The second rail is equipped with a protocol converter FPL1 and an embedded data acquisition station DU-1 in sequence; the communication protocol converter FPL1, namely the DP / PA protocol coupler, is installed on the left side of the rail. Its function is to extend the DP protocol of the main link to the backward compatible PA protocol, realize the communication matching of devices with different baud rates, and improve the diversity of networking devices.

[0056] The right side of the track is equipped with a control station embedded information acquisition station DU-1, such as... Figure 5 As shown, it adopts a dual-redundant 24V DC power supply, and is externally configured with 10 digital input channels (DI), 2 RTD temperature input channels (PT 100), and 3 relay output channels (DO). Internally, it supports dual-redundant Profibus DP communication protocol.

[0057] The third rail is equipped with a photoelectric signal converter with redundant input modules; the rail is equipped with two photoelectric converters, OPL1 and OPL2, which are used to convert the fiber optic signals transmitted over long distances between electronic devices into RS485 drive level signals for recognition and communication by the communication controller SPC3 inside the fieldbus slave equipment.

[0058] An active terminating module is installed on the fourth rail; two active terminating resistors T1 and T2 are installed to achieve impedance matching of the physical link of the bus devices, reduce signal reflection on the cable, enhance anti-interference capability, and thus improve the communication message quality of the slave stations in the entire area.

[0059] Plastic flame-retardant cable trays are installed around the rails.

[0060] Installing all electrical components inside the cabinet frees up enough space and improves its environmental compatibility.

[0061] As a preferred embodiment 3, the redundant power supply module is electrically connected to the embedded data acquisition station DU-1, the protocol converter FPL1, the redundant input module, the active terminal module, and the audible and visual alarm JL-1 to provide redundant power.

[0062] The redundant power supply module includes an AC terminal block JD, a DC terminal block 24ZD, a first air circuit breaker 1K, a second air circuit breaker 2K, a first power module DY1, and a second power module DY2, which are sequentially installed on the rail.

[0063] An external power supply is introduced through AC terminal JD and connected to the first air circuit breaker 1K and the second air circuit breaker 2K via cables. The first air circuit breaker 1K and the second air circuit breaker 2K are connected to form a redundant circuit breaker. The first air circuit breaker 1K is connected in series with the corresponding first power module DY1 via a cable, and the second air circuit breaker 2K is connected in series with the corresponding second power module DY2 via a cable. The first power module DY1 and the second power module DY2 are each connected to the same DC terminal 24ZD, outputting dual power supplies to form a redundant power supply. The redundant power supply is connected via cables to the embedded data acquisition station DU-1, the protocol converter FPL1, the redundant input module, the active terminal module, and the audible and visual alarm JL-1 for redundant input. This design enables power redundancy within the distributed intelligent bus communication station, improving power supply reliability.

[0064] As a preferred option, such as Figure 1 and Figure 4 As shown, an external dual-channel UPS uninterruptible power supply is introduced, consisting of a first channel of AC220V and a second channel of AC220V. After passing through the AC terminal block JD, the dual UPS outputs to two air circuit breakers 1K and 2K, respectively. The outputs of air circuit breakers 1K and 2K then to two independent power modules DY1 and DY2. Air circuit breaker 1K outputs to its corresponding first power module DY1, and air circuit breaker 2K outputs to its corresponding second power module DY2. The power modules convert AC220V to DC24V, and after processing, the DC power is output through the DC terminal block 24ZD to provide dual-channel power to various electrical components, forming a redundant power supply. The embedded data acquisition station DU-1, protocol converter FPL1, photoelectric signal converters OPL1 and OPL2, active terminating resistors T1 and T2, and the audible and visual alarm JL-1 within the cabinet are all powered by the dual-channel redundant power supply input.

[0065] As a preferred embodiment 4, the redundant input module includes a first optical cable terminal box OTB1 and a second optical cable terminal box OTB2 respectively located on both sides of the electrical cabinet. One external communication optical fiber is connected to the corresponding first photoelectric signal converter OPL1 after passing through the first optical cable terminal box OTB1, and the other external communication optical fiber is connected to the corresponding second photoelectric signal converter OPL2 after passing through the second optical cable terminal box OTB2. Both the first photoelectric signal converter OPL1 and the second photoelectric signal converter OPL2 are connected to the embedded data acquisition station DU-1. The embedded data acquisition station DU-1 outputs output signals corresponding one-to-one with the two photoelectric signal converters after passing through the protocol converter FPL1.

[0066] More specifically, the active terminal module includes a first active terminal resistor T2 and a second active terminal resistor T1. The output signal of the protocol converter FPL1, corresponding to the first photoelectric signal converter OPL1, is connected to the first active terminal resistor T2 through a corresponding physical link. The output signal of the protocol converter FPL1, corresponding to the second photoelectric signal converter OPL2, is connected to the second active terminal resistor T1 through a corresponding physical link. The two physical links form a redundant communication link, and the bus slave devices in the production site are connected in parallel to the redundant communication link in sequence.

[0067] like Figure 2 and Figure 3 As shown, external communication is achieved through two independent optical fibers, representing fiber optic link A and fiber optic link B between electronic devices, respectively, which are used to form redundant communication links.

[0068] The fiber optic cable A path between electronic devices is connected to the corresponding second optical cable terminal box OTB2 and then to the corresponding second optoelectronic signal converter OPL2 for signal conversion. After signal conversion, it is connected to the embedded data acquisition station DU-1, and then connected in series with the protocol converter FPL1 through the data acquisition station DU-1. The protocol converter FPL1 outputs the corresponding physical link, that is, to the main line A at the production site.

[0069] The fiber optic B path between electronic devices is connected to the corresponding first optical cable terminal box OTB1 and then to the corresponding first optoelectronic signal converter OPL1 for signal conversion. After signal conversion, it is connected to the embedded data acquisition station DU-1, and then connected in series with the protocol converter FPL1 through the data acquisition station DU-1. The protocol converter FPL1 outputs the corresponding physical link, that is, to the main line B at the production site.

[0070] The main line A and main line B to the production site form a redundant communication link, which is connected to the bus slave devices 1~N (such as motor protectors, electric actuators, frequency converters, etc.) in the production site to form a network. After the local devices are connected in series, the physical link finally returns to the redundant active terminating resistors T1 and T2 in the cabinet to achieve a stable closed loop of the communication link. The bus A path from the production site to the communication station returns to the corresponding second active terminating resistor T1, and the bus B path from the production site to the communication station returns to the corresponding first active terminating resistor T2.

[0071] As a preferred embodiment 5, the embedded data acquisition station DU-1 supports the Profibus DP communication protocol, and the embedded data acquisition station DU-1 is equipped with corresponding redundant communication interfaces. This ensures that the embedded data acquisition station DU-1 is connected to the bus communication network through redundant communication interfaces, thereby improving stability.

[0072] In a preferred embodiment 6, the installed electrical components also include a temperature sensing element PT100. The PT100 is mounted on a mounting rail for real-time monitoring of the cabinet temperature. The PT100 is electrically connected to the audible and visual alarm JL-1 via an embedded data acquisition station DU-1, forming a coordinated operation. The PT100 temperature sensing element is used to monitor the cabinet temperature in real time; when the temperature is too high, the audible and visual alarm JL-1 is activated.

[0073] The JL-1 audible and visual alarm is connected to the DU-1 embedded data acquisition station via output channel DO-01. The JL-1 is connected in series with a relay and a protective fuse FU. When the acquisition station detects an abnormal data input, it will lock its own relay output DO to trigger the audible and visual alarm, alerting on-site inspection and maintenance personnel. Additionally, the acquisition station has other reserved input / output channels that can be expanded to meet different on-site requirements, such as automatic start / stop control of cooling fans and electric heating elements.

[0074] The working principle of this utility model:

[0075] The embedded data acquisition station is the core of the field distributed intelligent bus communication station. It can collect fault signals from various communication components within the station (such as power modules, photoelectric converters, and active terminals), including power failure alarms and program error alarms. Simultaneously, it monitors the real-time temperature using a PT100 temperature sensor installed within the station. These alarm and temperature signals are connected to the data acquisition station's switch and temperature input channels DI and RTD1 via cables within the station. Figure 5As shown, the embedded data acquisition station DU-1 adopts a dual-redundant 24V DC power supply and is externally configured with 10 digital input channels (DI), 3 PT 100 temperature resistance input channels, and 2 relay output channels (DO). When the acquisition station detects an abnormal data input from a channel, it will lock its own relay output (DO) to trigger an audible and visual alarm, alerting on-site inspection and maintenance personnel. Simultaneously, the acquisition station's other reserved input and output channels can be expanded to meet the usage requirements of different sites.

[0076] Meanwhile, this patent selects the embedded data acquisition station DU-1 that supports the Profibus DP communication protocol, and also connects it to the service object (the bus communication network within the station) through a redundant communication interface. The data acquisition station's GSD communication file is added to the bus network master station, so that the data information inside the communication station is transmitted to the DPU controller between electronic devices in the form of communication messages through the bus network. After the communication messages are decoded, they are displayed in the central control center through the HMI screen, which makes it convenient for engineers to remotely monitor the health status of the devices inside the distributed intelligent bus communication station in real time.

[0077] The distributed intelligent bus communication station implements the principle of power redundancy configuration, such as... Figure 4 As shown, the embedded data acquisition station DU-1, protocol converter FPL1, photoelectric signal converters OPL1 and OPL2, active terminating resistors T1 and T2, and audible and visual alarm JL-1 in the cabinet are all powered by dual redundant power inputs to improve power supply reliability.

[0078] The distributed intelligent bus communication station implements the principle of redundant configuration of the communication network, such as... Figure 2 and Figure 3 As shown, external communication is achieved by two independent optical fibers passing through independent optical cable terminal boxes OTB1 and OTB2 to two independent optoelectronic conversion modules OPL1 and OPL2 for signal conversion. After conversion, the signal is first connected to the embedded data acquisition station DU-1, and then connected in series with the protocol converter FPL1 via the data acquisition station DU-1 to connect to the bus slave device network in the production site. After the local device connection is completed, the physical link finally returns to the redundant active terminating resistors T1 and T2 in the cabinet to achieve a stable closed loop of the communication link.

Claims

1. An industrial field distributed intelligent bus communication station, comprising an electrical cabinet, wherein the electrical cabinet is provided with a plurality of rails for mounting electrical components, characterized in that, The installed electrical components include a redundant power supply module, an embedded data acquisition station, a protocol converter, a redundant input module, and an active terminal module. An audible and visual alarm is provided on the outer top of the electrical cabinet. The redundant input module is connected to the active terminal module through the embedded data acquisition station and protocol converter to form a redundant communication link. The bus slave devices in the production site are connected to the redundant communication link in sequence, and the embedded data acquisition station is connected to the bus communication network through the redundant communication interface. The redundant power supply module, protocol converter, redundant input module, and active terminal module are electrically connected to the audible and visual alarm through an embedded data acquisition station to form a coordinated operation.

2. The industrial field distributed intelligent bus communication station according to claim 1, characterized in that, The rails are at least four in number and are all arranged horizontally.

3. The industrial field distributed intelligent bus communication station according to claim 2, characterized in that, Redundant power supply modules are sequentially installed on the first rail; The second rail is equipped with a protocol converter and an embedded data acquisition station in sequence. The third rail is equipped with a photoelectric signal converter with redundant input modules; An active terminal module is installed on the fourth rail.

4. An industrial field distributed intelligent bus communication station according to claim 3, characterized in that, The redundant power supply module is electrically connected to the embedded data acquisition station, protocol converter, redundant input module, active terminal module and audible and visual alarm to provide redundant power.

5. An industrial field distributed intelligent bus communication station according to claim 4, characterized in that, The redundant power supply module includes an AC terminal block, a DC terminal block, a first air circuit breaker, a second air circuit breaker, a first power supply module, and a second power supply module, which are sequentially installed on the rail. The external power supply is introduced through the AC terminal block and connected to the first and second air circuit breakers respectively. The first and second air circuit breakers are connected to form a redundant circuit breaker. The first air circuit breaker is connected in series with the corresponding first power module, and the second air circuit breaker is connected in series with the corresponding second power module. The first and second power modules are connected to the same DC terminal block respectively to output dual power supplies to form a redundant power supply. The redundant power supply is connected to the embedded data acquisition station, protocol converter, redundant input module, active terminal module and audible and visual alarm for redundant input.

6. An industrial field distributed intelligent bus communication station according to claim 5, characterized in that, The redundant input module includes a first optical cable terminal box and a second optical cable terminal box respectively located on both sides of the electrical cabinet. One external communication optical fiber passes through the first optical cable terminal box and is connected to the corresponding first photoelectric signal converter. The other external communication optical fiber passes through the second optical cable terminal box and is connected to the corresponding second photoelectric signal converter. Both the first and second photoelectric signal converters are connected to an embedded data acquisition station. The embedded data acquisition station outputs output signals corresponding one-to-one with the two photoelectric signal converters after passing through a protocol converter.

7. An industrial field distributed intelligent bus communication station according to claim 6, characterized in that, The active terminal module includes a first active terminal resistor and a second active terminal resistor. The output signal of the protocol converter corresponding to the first photoelectric signal converter is connected to the first active terminal resistor through a corresponding physical link. The output signal of the protocol converter corresponding to the second photoelectric signal converter is connected to the second active terminal resistor through a corresponding physical link. The two physical links form a redundant communication link. The bus slave devices in the production site are connected in parallel to the redundant communication link in sequence.

8. An industrial field distributed intelligent bus communication station according to claim 1, characterized in that, The embedded data acquisition station supports the Profibus DP communication protocol and has corresponding redundant communication interfaces.

9. An industrial field distributed intelligent bus communication station according to claim 1, characterized in that, The installed electrical components also include a temperature measuring element, which is mounted on a rail for real-time monitoring of the cabinet temperature. The temperature measuring element is electrically connected to an audible and visual alarm via an embedded data acquisition station to form a coordinated action.

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