Multi-communication-interface programmable controller for improving communication

Abstract

The utility model relates to a multi-communication-interface programmable controller for improving communication, which comprises a bottom plate, a controller chip is fixedly mounted on the front surface of the bottom plate, a shell is placed on the front surface of the bottom plate, and heat dissipation pieces are arranged on the bottom plate and the shell; the heat dissipation piece comprises a supporting block, one end of the supporting block is fixedly connected with the inner side wall of the shell, and a heat dissipation fan is inserted into the inner side of the supporting block. According to the multi-communication-interface programmable controller capable of improving communication, the cooling fan fixed on the supporting block is matched with the cooling holes to form a cooling channel, heat generated by the controller chip can be continuously blown away, air outside the shell can be guided into the shell through the ventilation holes in the shell under the condition of negative pressure, and therefore the communication efficiency is improved. And the radiating fins which abut against the controller chip can continuously take away the heat of the controller chip, and the heat is blown by the radiating fan to dissipate heat, so that the radiating effect on the controller chip is improved, and the service life of the whole programmable controller is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of programmable controllers, in particular to a multi-communication interface programmable controller for improving communication. Background Art

[0002] Programmable Controller (PC or PLC) is an electronic system for digital computing operations, specially designed for use in industrial environments.

[0003] Since the programmable controller is small in size and powerful in function, it will generate a lot of heat when working. Although it has heat dissipation holes, the heat dissipation holes can only dissipate heat passively, so the excessive heat cannot be quickly discharged through the heat dissipation holes in a short time. If it is in an overheated environment for a long time, it is easy to damage the programmable controller, thus affecting its normal service life. Therefore, a multi-communication interface programmable controller with improved communication is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a multi-communication interface programmable controller that improves communication, has the advantages of improving the heat dissipation effect to increase the service life, and solves the problem of poor heat dissipation effect.

[0005] To achieve the above object, the utility model provides the following technical solution: a multi-communication interface programmable controller for improving communication, comprising a base plate, a controller chip is fixedly mounted on the front of the base plate, a housing is placed on the front of the base plate, and heat sinks are arranged on the base plate and the housing;

[0006] The heat dissipation component includes a support block fixedly connected to the inner wall of the shell at one end, a cooling fan is inserted into the inner side of the support block, and the outer side of the cooling fan is fixedly connected to an insertion block with one end extending into the support block. The outer side of the shell is provided with heat dissipation holes, and the front side of the shell is provided with ventilation holes, the inner sides of the ventilation holes and the heat dissipation holes are both fixedly connected with dustproof nets, the inner side wall of the shell is fixedly connected with a heat sink with one end penetrating the shell, the outer side of the shell and the base plate are both fixedly connected with connecting blocks, and the outer side of the base plate is fixedly connected with a mounting block.

[0007] Furthermore, the number of the support blocks is four, and the four support blocks are symmetrically distributed on the inner wall of the shell in groups of two.

[0008] Furthermore, a slot is provided on the outside of the insert block on one side of the support block close to the heat dissipation fan, and the slot is in the shape of an elongated strip.

[0009] Furthermore, the number of the connection blocks is eight, and the eight connection blocks are symmetrically distributed on the left and right sides of the shell and the bottom plate in groups of two, and fixing holes are opened inside the connection blocks.

[0010] Furthermore, the number of the ventilation holes and the number of the heat sinks are both several, several of the ventilation holes are equidistantly distributed on the front side of the shell, and several of the heat sinks and the ventilation holes are staggeredly distributed.

[0011] Furthermore, the number of the mounting blocks is four, and the four mounting blocks are equidistantly distributed at the four corners of the base plate.

[0012] Furthermore, the controller chip is an integrated isolation chip that integrates an isolation chip and a level conversion chip.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The multi-communication interface programmable controller with improved communication has a shell that is fixed to the bottom plate through a connecting block. Since the inner wall of the shell is provided with a support block for limiting and fixing the cooling fan, the cooling fan fixed on the support block cooperates with the cooling holes to form a cooling channel to continuously blow away the heat generated by the controller chip, and the ventilation holes on the shell can introduce the air outside the shell into the shell under negative pressure, and the heat sink that contacts the controller chip can also continuously take away the heat of the controller chip and be blown away by the cooling fan to dissipate the heat, thereby improving the heat dissipation effect of the controller chip and improving the service life of the entire programmable controller.

[0015] 2. The multi-communication interface programmable controller for improving communication has an integrated 485 isolation chip that integrates an isolation chip and a 485 level conversion chip. The isolation 485 circuit can effectively isolate the high-voltage area from the safe area in the system to ensure the safety of equipment and personnel. It can also disconnect the ground loop of long-distance transmission signals to avoid the influence of ground loops and common-mode signals, to ensure the stability of the communication network and protect the communication interface, and to ensure power isolation and electrical isolation to avoid interface damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a front view of the overall structure of the utility model;

[0018] Figure 3 This is a side view of the connection between the support block and the cooling fan structure of the utility model;

[0019] Figure 4 It is a side perspective view of the shell structure of the utility model.

[0020] In the figure: 1 bottom plate, 2 controller chip, 3 heat sink, 31 cooling fan, 32 heat dissipation hole, 33 dust net, 34 support block, 35 plug block, 36 ventilation hole, 37 connection block, 38 mounting block, 39 heat sink, 4 outer shell. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 The multi-communication interface programmable controller for improving communication in this embodiment includes a base plate 1, a controller chip 2 is fixedly installed on the front of the base plate 1, a shell 4 is placed on the front of the base plate 1, and a heat sink 3 is provided on the base plate 1 and the shell 4.

[0023] In this embodiment, the heat dissipation effect of the entire programming controller is improved by the housing 4 located outside the controller chip 2 and the heat sink 3 located on the housing 4 .

[0024] Among them, the controller chip 2 is an integrated 485 isolation chip that integrates an isolation chip and a 485 level conversion chip. When the external nodes of the 485 communication interface are connected to the power supply, the reference ground of the communication nodes are connected to the ground. When there is a large voltage difference between the grounds at both ends, the ground potential will be superimposed on the signal line in the form of a common-mode voltage, which may exceed the common-mode voltage range that the port can withstand, affecting normal communication and even damaging the back-end circuit. When the ground plane between the 485 communication nodes is connected by a cable such as a 485 shielded cable, the ground wire and the ground form a ground loop, which will couple external common-mode noise and generate a ground loop current, which may cause the entire circuit to The system fails, so in order to avoid damage, 485 isolation is necessary. An integrated 485 isolation chip that integrates an isolation chip and a 485 level conversion chip is used, and a three-channel capacitor isolation and a 485 transceiver are integrated inside the chip, so that the chip bus interface has a ±16kV system-level contact discharge ESD protection capability, and has a failure protection circuit. When the receiver input is open, short-circuited or the bus is idle, the receiver will output a logic high level. The input impedance of the receiver is 1 / 8 unit load, allowing up to 256 transceivers to be hung on the bus, and the output driver provides an ultra-large output voltage swing to ensure a higher noise tolerance.

[0025] It should be noted that the controller communication interface:

[0026] 1.485 serial bus Bus electrical characteristics EIA-485 also known as RS485 Electrical isolation No electrical isolation Connection terminals +, -, ⊥, Bus protocol ModbusRTU Communication rate 1200 / 2400 / 4800 / 9600 / 19200 / 38400bps

[0027] 2. Controller connection terminal RJ45, bus protocol Modbus TCP communication rate 10Mbps.

[0028] See also Figure 1-4 In this embodiment, the heat sink 3 includes a support block 34 with one end fixedly connected to the inner wall of the shell 4, a heat dissipation fan 31 is plugged into the inner side of the support block 34, and an insert block 35 with one end extending to the inside of the support block 34 is fixedly connected to the outer side of the heat dissipation fan 31. A heat dissipation hole 32 is opened on the outer side of the shell 4, and a ventilation hole 36 is opened on the front of the shell 4. The inner sides of the ventilation hole 36 and the heat dissipation hole 32 are fixedly connected with a dustproof net 33, and the inner side wall of the shell 4 is fixedly connected with a heat sink 39 with one end penetrating the shell 4. The shell 4 and the outer side of the bottom plate 1 are fixedly connected with a connecting block 37, and the outer side of the bottom plate 1 is fixedly connected with a mounting block 38.

[0029] In this embodiment, the cooling fan 31 fixed on the support block 34 cooperates with the cooling holes 32 to form a cooling channel to continuously blow away the heat generated by the controller chip 2, and the ventilation holes 36 on the outer shell 4 can introduce the air outside the outer shell 4 into the outer shell 4 under negative pressure, and the heat sink 39 in contact with the controller chip 2 can also continuously take away the heat of the controller chip 2 and be blown away by the cooling fan 31 to dissipate the heat, thereby improving the heat dissipation effect of the controller chip 2, thereby increasing the service life of the entire programming controller.

[0030] Among them, the number of support blocks 34 is four, and the four support blocks 34 are symmetrically distributed on the inner wall of the shell 4 in groups of two. The cooling fan 31 is supported by two groups of support blocks 34, and after the shell 4 and the base plate 1 are fixed, the cooling fan 31 can be fixed by the support blocks 34.

[0031] In addition, a slot is provided on the side of the support block 34 close to the cooling fan 31 and is located outside the insert block 35. The slot is in the shape of a long strip, which is convenient for operators to disassemble the cooling fan 31 on the insert block 35 or remove it from the insert block 34 for maintenance.

[0032] Secondly, there are eight connecting blocks 37, which are symmetrically distributed in pairs on the left and right sides of the outer shell 4 and the base plate 1. A fixing hole is opened inside the connecting block 37. After the connecting block 37 on the outer shell 4 and the base plate 1 are fitted together, conventional bolts can be used to pass through the fixing holes for fixed installation.

[0033] Then, the number of ventilation holes 36 and heat sink 39 are both several, and several ventilation holes 36 are equidistantly distributed on the front of the shell 4, and several heat sink 39 are staggered with the ventilation holes 36. The heat sink 39 is a copper sheet, and the ventilation holes 36 are used to maintain the ventilation of the inner side of the shell 4, and the heat sink 39 is used to assist the cooling fan 31 to dissipate heat together.

[0034] Finally, there are four mounting blocks 38 , which are evenly distributed at the four corners of the base plate 1 , and the base plate 1 is fixedly mounted by the mounting blocks 38 .

[0035] The working principle of the above embodiment is:

[0036] After the shell 4 is fixed to the base plate 1 through the connecting block 37, since the inner wall of the shell 4 is provided with a support block 34 for limiting and fixing the cooling fan 31, the cooling fan 31 fixed on the support block 34 cooperates with the cooling hole 32 to form a cooling channel to continuously blow away the heat generated by the controller chip 2, and the ventilation hole 36 on the shell 4 can introduce the air outside the shell 4 into the shell 4 under negative pressure, and the heat sink 39 that contacts the controller chip 2 can also continuously take away the heat of the controller chip 2, and is blown away by the cooling fan 31 to dissipate heat, thereby improving the heat dissipation effect of the controller chip 2, thereby improving the service life of the entire programming controller, and since the controller chip 2 is an integrated 485 isolation chip that integrates an isolation chip and a 485 level conversion chip, the isolation 485 circuit can effectively isolate the high-voltage area from the safe area in the system to ensure the safety of equipment and personnel; and disconnect the ground loop of the long-distance transmission signal to avoid the influence of the ground loop and the common mode signal to ensure the stability of the communication network and protect the communication interface, and ensure power isolation and electrical isolation to avoid interface damage.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-communication interface programmable controller for improving communication, comprising a base plate (1), characterized in that: A controller chip (2) is fixedly mounted on the front of the base plate (1), a housing (4) is placed on the front of the base plate (1), and a heat sink (3) is provided on the base plate (1) and the housing (4); The heat sink (3) comprises a support block (34) having one end fixedly connected to the inner wall of the outer shell (4); a heat dissipation fan (31) is plugged into the inner side of the support block (34); an insert block (35) having one end extending into the interior of the support block (34) is fixedly connected to the outer side of the heat dissipation fan (31); a heat dissipation hole (32) is provided on the outer side of the outer shell (4); a ventilation hole (36) is provided on the front side of the outer shell (4); a dustproof net (33) is fixedly connected to the inner side of the ventilation hole (36) and the heat dissipation hole (32); a heat sink (39) having one end penetrating the outer shell (4) is fixedly connected to the inner wall of the outer shell (4); a connection block (37) is fixedly connected to the outer side of the outer shell (4) and the bottom plate (1); and a mounting block (38) is fixedly connected to the outer side of the bottom plate (1).

2. The multi-communication interface programmable controller for improving communication according to claim 1, characterized in that: The number of the support blocks (34) is four, and the four support blocks (34) are symmetrically distributed on the inner wall of the outer shell (4) in groups of two.

3. The multi-communication interface programmable controller for improving communication according to claim 1, characterized in that: A slot located outside the insert block (35) is provided on one side of the support block (34) close to the cooling fan (31), and the slot is in the shape of a long strip.

4. The multi-communication interface programmable controller for improving communication according to claim 1, characterized in that: The number of the connecting blocks (37) is eight, and the eight connecting blocks (37) are arranged in groups of two and are symmetrically distributed on the left and right sides of the outer shell (4) and the bottom plate (1), and fixing holes are provided inside the connecting blocks (37).

5. The multi-communication interface programmable controller for improving communication according to claim 1, characterized in that: The number of the ventilation holes (36) and the number of the heat sinks (39) are both multiple, the multiple ventilation holes (36) are equidistantly distributed on the front side of the housing (4), and the multiple heat sinks (39) and the ventilation holes (36) are staggeredly distributed.

6. The multi-communication interface programmable controller for improving communication according to claim 1, characterized in that: The number of the mounting blocks (38) is four, and the four mounting blocks (38) are equidistantly distributed at the four corners of the base plate (1).

7. The multi-communication interface programmable controller for improving communication according to claim 1, characterized in that: The controller chip (2) is an integrated 485 isolation chip that integrates an isolation chip and a 485 level conversion chip.

Images