An improved communication protocol converter based on ModbusTCP protocol

Abstract

The present invention provides an improved communication protocol converter based on the Modbus TCP protocol, which solves problems such as inconvenient interface expansion. The converter includes a converter body having several interface modules connected to a data processing module equipped with a Modbus protocol unit and a TCP / IP protocol unit. A DTS module connected to the data processing module is installed within the converter body, and the converter body is equipped with an expansion mechanism. The present invention has the advantages of convenient interface expansion and stable structure.

Description

Technical Field

[0001] The invention belongs to the technical field of protocol converters, and in particular relates to an improved communication protocol converter based on the ModbusTCP protocol. Background Art

[0002] Protocol converters, also known as interface converters, enable hosts on a communication network using different higher-level protocols to collaborate and implement various distributed applications. They operate at the transport layer or higher. Interface protocol converters can typically be implemented using a single ASIC chip, offering low cost and compact size. Industrial communications require information sharing and data exchange between multiple devices. Common industrial control equipment communication ports include RS-232, RS-485, CAN, and network. The varying interface protocols make operation and information exchange across heterogeneous networks difficult. Multi-protocol converters can network devices with different interfaces, enabling interoperability. Based on multiple communication ports and various protocols, a wide variety of protocol converters exist. Key categories include E1 / Ethernet protocol converters, RS-232 / 485 / 422 / CAN converters, and RS-232 / 485 / CAN converters. However, conventional protocol converters suffer from poor heat dissipation. Furthermore, single-protocol converters have limited interfaces and cannot meet the complex needs of industrial communications.

[0003] To address the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a 5G industrial Ethernet bus protocol converter [202111408446.4], which includes a protocol converter body and a heat dissipation assembly. The heat dissipation assembly includes a U-shaped frame, two guide rods, a screw, a clamping plate, multiple elastic members, a heat exchange mechanism, a first hose, a water pump, a water tank, and a second hose. Rotating the screw causes the clamping plate to move along the direction of the two guide rods. The clamping plate is clamped to the outside of the protocol converter body with the U-shaped frame. The heat exchange mechanism is made of copper material with good thermal conductivity. Multiple elastic members press the heat exchange mechanism tightly against the side of the protocol converter body. The heat exchange mechanism replaces the heat of the protocol converter body. The first and second hoses connect the water tank and the heat exchange mechanism. The water pump circulates the cooling water in the water tank within the heat exchange mechanism to absorb the heat replaced by the heat exchange mechanism.

[0004] The above solution solves the problem of poor heat dissipation of existing protocol converters to a certain extent, but the solution still has many shortcomings, such as the limited interface of the protocol converter and the inconvenience of expansion. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide an improved communication protocol converter based on the ModbusTCP protocol with reasonable design and convenient interface expansion.

[0006] To achieve the above objectives, the present invention employs the following technical solutions: an improved communication protocol converter based on the Modbus TCP protocol, comprising a converter body having several interface modules connected to a data processing module equipped with a Modbus protocol unit and a TCP / IP protocol unit; a DTS module connected to the data processing module installed within the converter body; and an expansion mechanism. The expansion mechanism enables the converter body to add interface modules, thereby cooperating with the Modbus protocol unit and the TCP / IP protocol unit to achieve multi-protocol conversion.

[0007] In the aforementioned improved ModbusTCP-based communication protocol converter, the converter body has a plug-in mechanism for mounting an interface module, and an internal isolation mechanism is provided within the converter body. The interface module is secured to the converter body via the plug-in mechanism, while the internal isolation mechanism ensures that each module is relatively independent and does not interfere with each other.

[0008] In the aforementioned improved communication protocol converter based on the Modbus TCP protocol, the converter body includes a converter base having a downwardly opening mounting cavity. The lower opening of the converter base is sealed by a converter cover. A self-locking assembly is provided between the converter cover and the converter base. The self-locking assembly allows for quick assembly and disassembly of the converter base and the converter cover.

[0009] In the aforementioned improved communication protocol converter based on the Modbus TCP protocol, a self-locking assembly includes a locking block rotatably connected to the converter cover. The locking block is coated with a flexible layer on the outside. A limit plate is fixed to the inside of the locking block, which is in contact with the converter cover. The limit plate has transmission teeth. The converter cover is provided with a first locking gear and a second locking gear on the inside, which mesh with the transmission teeth. The first locking gear and the second locking gear each have a locking protrusion. The converter base is provided with a locking groove on the inside for the locking protrusion to rotate and engage. The converter cover is provided with a stacked locking plate. The limit plate, the first locking gear, and the second locking gear are mounted between the adapter cover and the locking plate. The mounting cavity is divided into a main cavity and a plurality of independent sub-cavities by the mounting plate. The sub-cavities are arranged symmetrically with respect to the center of the main cavity. Isolation mechanisms are provided between the main cavity and the sub-cavities, and between the sub-cavities. The self-locking assembly connects the converter base and the converter cover from multiple directions, and maintains relative isolation between the converter bodies after locking and fixing.

[0010] In the above-mentioned improved communication protocol converter based on the ModbusTCP protocol, the isolation mechanism includes an isolation substrate distributed on the inner side of the upper end of the converter base, the isolation substrate having an isolation hole, an isolation column fixedly inserted in the isolation hole, an isolation groove extending axially formed on the side of the isolation column, a mounting plate inserted between the isolation grooves of adjacently arranged isolation columns, and a heat dissipation assembly disposed between the mounting plates and the converter base; the heat dissipation assembly includes heat dissipation ribs disposed on the side of the mounting plate, an air inlet and an air outlet disposed on the converter base, and a heat dissipation fan disposed between the air inlet and the air outlet; the air inlet is disposed at the upper end of the converter base, the air outlet is disposed on the side of the converter base, and a heat dissipation channel is disposed between the mounting plates, the heat dissipation channel being arranged centrally and symmetrically relative to the converter base. The heat dissipation assembly equipped with the isolation mechanism effectively improves the heat dissipation efficiency of internal components and enables active heat dissipation.

[0011] In the aforementioned improved communication protocol converter based on the Modbus TCP protocol, the plug-in mechanism includes a socket disposed on the side of the converter body. A plug connected to the interface module is mounted within the socket. A circumferential sealing strip is disposed on the side of the plug. The plug has a sealing edge that abuts against the outside of the converter body and is secured to the converter body via a threaded member. A sealing cap is attached to the plug, and an elastic return member is disposed between the sealing cap and the plug. An automatic disconnect assembly is disposed between the plug and the socket. The automatic disconnect assembly includes a connector disposed at the bottom of the socket and at the end of the plug, which are pluggable with each other. A relay is disposed between the connectors, and the relay is connected to the data processing module. The plug-in mechanism ensures the installation stability of the interface module.

[0012] In the above-mentioned improved communication protocol converter based on the ModbusTCP protocol, the expansion mechanism includes expansion disks installed at the upper and lower ends of the converter body, the converter bodies are arranged in a stacked manner, and the expansion disks of adjacent converter bodies are arranged oppositely and connected by an expansion assembly; the expansion disk includes a male disk installed at the upper end of the converter body and a female disk installed at the lower end of the converter body, the expansion assembly includes a push bar slidably installed in the male disk and extending radially, an expansion turntable is rotatably installed at the center of the male disk, the expansion turntable and the push bar are meshed and driven by a gear rack, an elastic reset member is provided between the expansion turntable and the male disk, push blocks are arranged symmetrically on the side of the expansion turntable, and inclined push surfaces are provided on the side of the push blocks, expansion rods corresponding to the stack blocks are slidably installed in the male disk, an elastic reset member is provided between the expansion rod and the male disk, the female disk has an expansion slot for inserting the male disk, and an expansion hole corresponding to the expansion rod and for inserting the end of the expansion rod is opened on the inner side of the expansion slot, a first clamping assembly is provided between the push bar and the male disk, and a second clamping assembly is provided between the expansion rod and the female disk. The expansion mechanism enables the superposition installation of multiple converter bodies to meet the conversion needs of complex industrial protocols.

[0013] In the above-mentioned improved communication protocol converter based on the ModbusTCP protocol, the first snap-in assembly includes a first snap-in groove and a second snap-in groove arranged on the side of the push bar and arranged in the axial direction. A first snap-in block is installed in the male disk and is plugged and locked with the first snap-in groove or the second snap-in groove. An elastic reset member and a reset dial block are provided between the snap-in block and the male disk. The second snap-in assembly includes a snap-in ring body rotatably installed in the female disk. An elastic reset member is provided between the snap-in ring body and the female disk. A third snap-in groove is respectively opened on one side of the end of the expansion rod. The inner side of the snap-in ring body is opposite to the end of the expansion rod. The snap-in ring body has a second snap-in block corresponding to the expansion hole and the third snap-in groove. The first snap-in assembly and the second snap-in assembly respectively realize the buckling and fixation of the expansion mechanism, thereby improving its installation stability.

[0014] In the aforementioned improved communication protocol converter based on the Modbus TCP protocol, a cross plug is rotatably mounted at the center of the female disk, and a cross socket connected to the expansion disk is rotatably mounted at the center of the male disk. The cross plug and the cross socket are plugged into each other and rotate synchronously. A centrally symmetrical linkage bar is connected between the cross plug and the clamping ring. The linkage bar drives the clamping ring to rotate, achieving internal fastening of the second clamping assembly.

[0015] In the aforementioned improved communication protocol converter based on the Modbus TCP protocol, a power module connected to a data processing module is provided within the converter body, which is in turn connected to a wireless transmission module. The wireless transmission modules are interconnected within each converter body to implement data protocol exchange.

[0016] Compared with the existing technology, the advantages of the present invention are: the converter body realizes interface module expansion through an expansion mechanism, thereby meeting the complex industrial protocol conversion needs; an isolation mechanism is provided inside the converter body to ensure that each protocol unit is relatively independent and does not interfere with each other; the interface module is quickly connected to the converter body through a plug-in mechanism, which facilitates the replacement of the corresponding line interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the combination of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the present invention;

[0019] Figure 3 It is a structural schematic diagram of another perspective of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 5 is a structural cross-sectional view of the male disk of the present invention;

[0022] Figure 6is a structural cross-sectional view of a master disc of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the self-locking assembly of the present invention;

[0024] Figure 8 is another structural schematic diagram of the self-locking assembly of the present invention;

[0025] Figure 9 It is a structural block diagram of the converter body of the present invention;

[0026] In the figure, the converter body 1, the interface module 11, the data processing module 12, the Modbus protocol unit 13, the TCP / IP protocol unit 14, the converter base 15, the converter cover 16, the power module 17, the wireless transmission module 18, the DTS module 19, the expansion mechanism 2, the expansion disk 21, the male disk 22, the female disk 23, the push bar 24, the expansion turntable 25, the push block 26, the expansion rod 27, the expansion slot 28, the expansion hole 29, the plug-in mechanism 3, the socket 31, the plug 32, the sealing strip 33, the sealing edge 34, the sealing cover 35, the isolation mechanism 4, the isolation substrate 41, the isolation hole 42, the isolation column 43, the isolation Slot 44, self-locking assembly 5, locking block 51, limit plate 52, transmission tooth 53, first locking gear 54, second locking gear 55, locking protrusion 56, locking groove 57, locking plate 58, mounting plate 6, main cavity 61, auxiliary cavity 62, heat dissipation assembly 7, heat dissipation rib 71, air inlet 72, air outlet 73, cooling fan 74, heat dissipation channel 75, first clamping assembly 8, first clamping slot 81, second clamping slot 82, first clamping block 83, reset dial block 84, second clamping assembly 9, clamping ring body 91, third clamping slot 92, second clamping block 93, cross plug 94, cross socket 95, linkage bar 96. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-9As shown, an improved communication protocol converter based on the ModbusTCP protocol includes a converter body 1 having several interface modules 11 connected to a data processing module 12. The data processing module 12 is equipped with a Modbus protocol unit 13 and a TCP / IP protocol unit 14. A DTS module 19 connected to the data processing module 12 is installed within the converter body 1. The converter body 1 is also equipped with an expansion mechanism 2. The Modbus protocol unit 13 connects the controller to the network and is programmed by the data processing module 12. The TCP / IP protocol unit 14 is used for network communication protocol conversion, receiving and forwarding data transmitted from each interface module 11. The DTS module 19 monitors the operating status of the converter body 1 and each controller in real time. The expansion mechanism 2 installed in the converter body 1 expands the interface modules 11 by connecting the converter bodies 1 in series.

[0029] Specifically, the converter body 1 has a plug-in mechanism 3 for installing the interface module 11, and an isolation mechanism 4 is provided inside the converter body 1. The plug-in mechanism 3 allows the interface module 11 to be quickly plugged into the converter body 1 and connected to the data processing module 12. The isolation mechanism 4 partitions the assembly of modules such as the Modbus protocol unit 13.

[0030] Specifically, the converter body 1 includes a converter base 15 having a downwardly opening mounting cavity. The lower opening of the converter base 15 is closed by a converter cover 16, and a self-locking assembly 5 is disposed between the converter cover 16 and the converter base 15. The converter base 15 and the converter cover 16 are combined and closed by the self-locking assembly 5, wherein the mounting cavity within the converter base 15 is separated by an isolation mechanism 4.

[0031] Furthermore, the self-locking assembly 5 includes a locking block 51 rotatably connected to the converter cover 16. The outer side of the locking block 51 is coated with a flexible layer. A limit plate 52 that fits the converter cover 16 is fixed to the inner side of the locking block 51. The limit plate 52 has a transmission tooth 53. The inner side of the converter cover 16 is provided with a first locking gear 54 and a second locking gear 55 that meshes with the transmission tooth 53. The first locking gear 54 and the second locking gear 55 respectively have a locking protrusion 56. The inner side of the converter base 15 is provided with a The adapter cover is provided with a locking groove 57 into which the locking projection 56 is rotated and engaged. A stacked locking plate 58 is mounted on the adapter cover. The limit plate 52, the first locking gear 54, and the second locking gear 55 are mounted between the converter cover 16 and the locking plate 58. The mounting cavity is divided by the mounting plate 6 into a main cavity 61 and a plurality of independent sub-cavities 62. The sub-cavities 62 are arranged symmetrically relative to the center of the main cavity 61. The isolation mechanism 4 is provided between the main cavity 61 and the sub-cavities 62, and between the sub-cavities 62 and the sub-cavities 62. Rotating the locking block 51 drives the limit plate 52 to rotate. At the same time, the first locking gear 54 and the second locking gear 55 engage with each other to rotate the locking projection 56. The locking projection 56 engages the locking groove 57 of the converter base 15, preventing the converter base 15 and the converter cover 16 from separating. The self-locking assembly 5 is arranged at the corners of the converter base 15 and the converter cover 16 , wherein the converter base 15 and the converter cover 16 are hexagonal.

[0032] Furthermore, the isolation mechanism 4 includes an isolation substrate 41 distributed on the inner side of the upper end of the converter base 15, and an isolation hole 42 is opened on the isolation substrate 41, and an isolation column 43 is inserted and fixed in the isolation hole 42, and an isolation groove 44 extending axially is opened on the side of the isolation column 43, and the mounting plate 6 is inserted between the isolation grooves 44 of the adjacently arranged isolation columns 43, and a heat dissipation component 7 is arranged between the mounting plates 6 and the converter base 15; the heat dissipation component 7 includes a heat dissipation rib 71 arranged on the side of the mounting plate 6, an air inlet 72 and an air outlet 73 are opened on the converter base 15, and a cooling fan 74 is installed between the air inlet 72 and the air outlet 73; the air inlet 72 is arranged at the upper end of the converter base 15, and the air outlet 73 is arranged on the side of the converter base 15, and a heat dissipation channel 75 is arranged between the mounting plates 6, and the heat dissipation channel 75 is arranged in a centrally symmetrical manner relative to the converter base 15. A corresponding air inlet channel is provided between the isolation base plate 41 of the isolation mechanism 4 and the upper end of the converter base 15, communicating with the air inlet 72. The mounting plate 6 is vertically provided with heat dissipation channels 75 separating the multiple sub-cavities 62, allowing air to flow rapidly within the main cavity 61 and accelerating heat exchange through the heat dissipation ribs 71. The heat dissipation fan 74 is in the shape of a vertical cylinder, with spiral fan strips installed inside to guide the air into a vortex-like flow.

[0033] In addition, the plug-in mechanism 3 includes a socket 31 disposed on the side of the converter body 1. A plug 32 connected to the interface module 11 is mounted within the socket 31. A circumferential sealing strip 33 is disposed on the side of the plug 32. The plug 32 has a sealing edge 34 that abuts against the outside of the converter body 1 and is secured to the converter body 1 via a screw. A sealing cap 35 is connected to the plug 32, and an elastic return member is disposed between the sealing cap 35 and the plug 32. An automatic disconnect assembly is disposed between the plug 32 and the socket 31. The automatic disconnect assembly includes connectors disposed at the bottom of the socket 31 and at the end of the plug 32, which are plugged into each other. A relay is disposed between the connectors, and the relay is connected to the data processing module 12. When the plug 32 is inserted into the socket 31, the flexible sealing strip 33 seals the gap, and the relay within the plug 32 controls the on / off switching of the interface module 11.

[0034] At the same time, the expansion mechanism 2 includes an expansion disk body 21 installed at the upper and lower ends of the converter body 1. The converter bodies 1 are arranged in a superimposed manner, and the expansion disk bodies 21 of adjacent converter bodies 1 are arranged relative to each other and connected by an expansion component; the expansion disk body 21 includes a male disk 22 installed at the upper end of the converter body 1 and a female disk 23 installed at the lower end of the converter body 1. The expansion component includes a push bar 24 slidably installed in the male disk 22 and extending radially. An expansion turntable 25 is installed at the center of the male disk 22. The expansion turntable 25 and the push bar 24 are driven by a gear rack. The expansion mechanism 2 is provided with an elastic reset member, and push blocks 26 are arranged symmetrically on the side of the expansion turntable 25. The push blocks 26 are provided with inclined push surfaces on the side. An expansion rod 27 corresponding to the stacking blocks is slidably installed in the male disk 22. An elastic reset member is provided between the expansion rod 27 and the male disk 22. The female disk 23 has an expansion slot 28 for inserting the male disk 22. The expansion slot 28 has an expansion hole 29 corresponding to the expansion rod 27 and for inserting the end of the expansion rod 27. A first clamping assembly 8 is provided between the push bar 24 and the male disk 22, and a second clamping assembly 9 is provided between the expansion rod 27 and the female disk 23. In the expansion mechanism 2, the female disk 23 is plugged into the male disk 22, and the push bar 24 drives the expansion turntable 25 to rotate. The push surface on the side of the push block 26 guides the expansion rod 27 to be ejected and inserted into the expansion hole 29.

[0035] As can be seen, the first clamping assembly 8 includes a first clamping groove 81 and a second clamping groove 82 arranged on the side of the push strip 24 and arranged in the axial direction. A first clamping block 83 is installed in the male disk 22, which is plugged and locked with the first clamping groove 81 or the second clamping groove 82. An elastic reset member and a reset dial block 84 are provided between the clamping block and the male disk 22. The second clamping assembly 9 includes a clamping ring body 91 rotatably installed in the female disk 23. An elastic reset member is provided between the clamping ring body 91 and the female disk 23. A third clamping groove 92 is respectively opened on one side of the end of the expansion rod 27. The inner side of the clamping ring body 91 is opposite to the end of the expansion rod 27. The clamping ring body 91 has a second clamping block 93 that corresponds one-to-one with the expansion hole 29 and the third clamping groove 92. The first clamping block 83 in the first clamping assembly 8 is plugged with the first clamping groove 81 or the second clamping groove 82 to keep the push strip 24 in a fixed position. The clamping block can be unlocked by toggling the reset dial block 84. When the clamping ring body 91 rotates, the second clamping block 93 of the inner layer is buckled and fixed with the end of the expansion rod 27.

[0036] Clearly, a cross plug 94 is rotatably mounted at the center of the female disc 23, while a cross socket 95, connected to the expansion disc 25, is rotatably mounted at the center of the male disc 22. The cross plug 94 and the cross socket 95 are plugged into each other and rotate synchronously. A centrally symmetrical linkage bar 96 connects the cross plug 94 and the snap ring 91. The cross plug 94 and the cross socket 95 enable torque transmission between the expansion disc 25 and the snap ring 91, while the linkage bar 96 ensures structural strength during the rotation of the snap ring 91.

[0037] Preferably, the converter body 1 is provided with a power module 17 connected to the data processing module 12, and the data processing module 12 is connected to the wireless transmission module 18. The converter body 1 is equipped with an independent power module 17, and the data processing module 12 realizes data transmission through the wireless transmission module 18, and multiple converters are connected in series.

[0038] To sum up, the principle of this embodiment is that: multiple interface modules 11 are installed inside the converter body 1, and data transmission and protocol exchange are performed by the Modbus protocol unit 13 and the TCP / IP protocol unit 14. The equipped expansion mechanism 2 realizes the merging of multiple converter bodies 1 and the expansion of the interface module 11 to meet the complex industrial protocol conversion needs.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0040] Although this article uses more converter body 1, interface module 11, data processing module 12, Modbus protocol unit 13, TCP / IP protocol unit 14, converter base 15, converter cover 16, power module 17, wireless transmission module 18, DTS module 19, expansion mechanism 2, expansion disk 21, male disk 22, female disk 23, push bar 24, expansion turntable 25, push block 26, expansion rod 27, expansion slot 28, expansion hole 29, plug-in mechanism 3, socket 31, plug 32, sealing strip 33, sealing edge 34, sealing cover 35, isolation mechanism 4, isolation substrate 41, isolation hole 42, isolation column 43, isolation slot 44, self-locking The terms assembly 5, locking block 51, limiting plate 52, transmission gear 53, first locking gear 54, second locking gear 55, locking protrusion 56, locking groove 57, locking plate 58, mounting plate 6, main cavity 61, auxiliary cavity 62, heat dissipation assembly 7, heat dissipation rib 71, air inlet 72, air outlet 73, heat dissipation fan 74, heat dissipation channel 75, first clamping assembly 8, first clamping groove 81, second clamping groove 82, first clamping block 83, reset block 84, second clamping assembly 9, clamping ring 91, third clamping groove 92, second clamping block 93, cross plug 94, cross socket 95, linkage bar 96, etc. are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. An improved communication protocol converter based on the ModbusTCP protocol, comprising a converter body (1), characterized in that: The converter body (1) has a plurality of interface modules (11), the interface modules (11) are connected to the data processing module (12), the data processing module (12) is equipped with a Modbus protocol unit (13) and a TCP / IP protocol unit (14), a DTS module (19) connected to the data processing module (12) is installed in the converter body (1), and the converter body (1) is equipped with an expansion mechanism (2); the converter body (1) has a plug-in mechanism (3) for installing the interface module (11), and an isolation mechanism (4) is provided inside the converter body (1); the converter body (1) includes a converter base (15 ), the converter base (15) has a mounting cavity with an opening facing downward, the lower end opening of the converter base (15) is closed by the converter cover (16), and a self-locking component (5) is provided between the converter cover (16) and the converter base (15); the self-locking component (5) includes a locking block (51) rotatably connected to the converter cover (16), the outer side of the locking block (51) is covered with a flexible layer, the inner side of the locking block (51) is fixed with a limiting plate (52) that fits with the converter cover (16), the limiting plate (52) has a transmission tooth (53), and the inner side of the converter cover (16) is provided with a first locking tooth that meshes with the transmission tooth (53) for transmission. The first locking gear (54) and the second locking gear (55) are provided with a locking protrusion (56) respectively. The inner side of the converter base (15) is provided with a locking groove (57) for the locking protrusion (56) to be rotated and engaged. The converter cover (16) is provided with a locking plate (58) arranged in a stacked manner. The limit plate (52), the first locking gear (54) and the second locking gear (55) are installed between the converter cover (16) and the locking plate (58). The installation cavity is divided into a main cavity (61) and a plurality of independent sub-cavities (62) by the installation plate (6). The sub-cavities (62) are arranged relative to the main cavity (61). ) are arranged symmetrically about the center, the isolation mechanism (4) is arranged between the main cavity (61) and the auxiliary cavity (62) and between the auxiliary cavity (62) and the auxiliary cavity (62); the isolation mechanism (4) includes an isolation substrate (41) distributed on the inner side of the upper end of the converter base (15), the isolation substrate (41) is provided with an isolation hole (42), the isolation hole (42) is plugged and fixed with an isolation column (43), the side of the isolation column (43) is provided with an isolation groove (44) extending in the axial direction, the mounting plate (6) is plugged between the isolation grooves (44) of the adjacently arranged isolation columns (43), and a heat dissipation component (7) is provided between the mounting plate (6) and the converter base (15);The heat dissipation assembly (7) includes a heat dissipation rib (71) arranged on the side of the mounting plate (6); an air inlet (72) and an air outlet (73) are provided on the converter base (15); a heat dissipation fan (74) is installed between the air inlet (72) and the air outlet (73); the air inlet (72) is provided at the upper end of the converter base (15); the air outlet (73) is provided on the side of the converter base (15); a heat dissipation channel (75) is provided between the mounting plates (6); the heat dissipation channel (75) is centrally symmetrically arranged relative to the converter base (15); a power supply module (17) connected to the data processing module (12) is provided in the converter body (1); the data processing module (12) is connected to the wireless transmission module (18).

2. The improved communication protocol converter based on ModbusTCP protocol according to claim 1, characterized in that: The plug-in mechanism (3) includes a socket (31) arranged on the side of the converter body (1), a plug (32) connected to the interface module (11) is installed inside the socket (31), a sealing strip (33) surrounding the side of the plug (32) is arranged along the circumferential direction, the plug (32) has a sealing edge (34) that fits the outer side of the converter body (1), and the sealing edge (34) is fixed to the converter body (1) by a screw member, the plug (32) is connected to a sealing cover (35), and an elastic reset member is arranged between the sealing cover (35) and the plug (32), and an automatic cut-off component is arranged between the plug (32) and the socket (31); the automatic cut-off component includes a wiring head arranged at the bottom of the socket (31) and the end of the plug (32) and plugged into each other, a relay is arranged between the wiring heads, and the relay is connected to the data processing module (12).

3. The improved communication protocol converter based on ModbusTCP protocol according to claim 1, characterized in that: The expansion mechanism (2) includes an expansion disk (21) installed at the upper and lower ends of the converter body (1), the converter bodies (1) are arranged in a stacked manner, and the expansion disks (21) of adjacent converter bodies (1) are arranged relative to each other and connected through an expansion component; the expansion disk (21) includes a male disk (22) installed at the upper end of the converter body (1) and a female disk (23) installed at the lower end of the converter body (1), the expansion component includes a push bar (24) slidably installed in the male disk (22) and extending radially, the center of the male disk (22) is rotatably installed with an expansion turntable (25), the expansion turntable (25) and the push bar (24) are driven by gear rack engagement, and a spring is provided between the expansion turntable (25) and the male disk (22). The expansion turntable (25) is provided with a push block (26) arranged symmetrically in the center on the side, and the push block (26) is provided with an inclined push surface on the side. An expansion rod (27) corresponding to the stacking block is slidably installed in the male disk (22), and an elastic reset member is provided between the expansion rod (27) and the male disk (22). The female disk (23) has an expansion groove (28) for inserting the male disk (22), and an expansion hole (29) corresponding to the expansion rod (27) and for inserting the end of the expansion rod (27) is opened on the inner side of the expansion groove (28). A first clamping component (8) is provided between the push bar (24) and the male disk (22), and a second clamping component (9) is provided between the expansion rod (27) and the female disk (23).

4. The improved communication protocol converter based on ModbusTCP protocol according to claim 3, characterized in that: The first clamping assembly (8) includes a first clamping groove (81) and a second clamping groove (82) arranged on the side of the push strip (24) and arranged in the axial direction. A first clamping block (83) is installed in the male disk (22) and is plugged and locked with the first clamping groove (81) or the second clamping groove (82). An elastic reset member and a reset dial block (84) are provided between the clamping block and the male disk (22); the second clamping assembly (9) includes a clamping ring body (91) rotatably installed in the female disk (23). An elastic reset member is provided between the clamping ring body (91) and the female disk (23). A third clamping groove (92) is respectively opened on one side of the end of the expansion rod (27). The inner side of the clamping ring body (91) is opposite to the end of the expansion rod (27). The clamping ring body (91) has a second clamping block (93) corresponding to the expansion hole (29) and the third clamping groove (92).

5. The improved communication protocol converter based on ModbusTCP protocol according to claim 4, characterized in that: The center of the female disc (23) is rotatably mounted with a cross plug (94), and the center of the male disc (22) is rotatably mounted with a cross socket (95) connected to the expansion turntable (25). The cross plug (94) and the cross socket (95) are plugged into each other and rotate synchronously. A linkage bar (96) arranged in a centrally symmetrical manner is connected between the cross plug (94) and the clamping ring body (91).

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