CN113885465A

CN113885465A - Pluggable IO module and DCS system

Info

Publication number: CN113885465A
Application number: CN202111264032.9A
Authority: CN
Inventors: 王洪淼; 马呈祥; 潘�清; 靳子洋; 田钢; 陈楠; 金曹彬; 王汉意; 张景; 徐超; 李铭洋
Original assignee: State Nuclear Power Automation System Engineering Co Ltd
Current assignee: State Nuclear Power Automation System Engineering Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-01-04

Abstract

The invention discloses a pluggable IO module and a DCS (distributed control system), wherein the pluggable IO module comprises a base, a daughter card, a fixing part and a pluggable fuse wire, the fixing part is used for detachably mounting the daughter card on the base, at least one fuse wire hole is formed in the base, and the pluggable fuse wire is inserted into the fuse wire hole. The pluggable IO module detachably connects the base and the daughter card, so that the problems that the module is difficult to disassemble during maintenance and troublesome to disassemble are solved; set up the fuse hole on the base and make but plug fuse expose outside module casing, and then can be timely accurate judge whether the fuse fuses, and very easy to operate when changing has advantages such as high reliability, high maintainability, high stability.

Description

Pluggable IO module and DCS system

Technical Field

The invention belongs to the field of input and output equipment of an automatic control system, and particularly relates to a pluggable IO module and a DCS (distributed control system).

Background

With the wide application of a Distributed Control System (DCS) in smart energy, electric power, chemical industry, water treatment, building and other industries, the market scale is larger and more competitive. Users have made higher demands on the aspects of the performance, cost, usability and the like of the DCS system. Indexes such as performance, cost and usability of the DCS system are mainly determined by an input/output module (IO module) in the DCS system. The modular design of a DCS system that is compact, powerful, reliable, easy to use and maintain becomes especially important.

In current automated control field, the signal input output module that the product of market mainstream adopted, the mode that adopts screw fastening mostly is connected with base or rack, need use special assembly and disassembly tools during the dismouting module, and maintenance duration is longer, and it is inconvenient to change the module. The fuses in the power supply circuit inside the module are generally patch fuses or self-recovery fuses, are generally small in size and are generally invisible to the outside. The module or chassis housing needs to be removed when the fuse needs to be replaced. In particular, when the base is removed, the signal cable connected to the base is usually removed, which is time and labor consuming and risks wrong connection when the base is recovered.

Disclosure of Invention

The invention provides a pluggable IO module and a DCS (distributed control system), aiming at overcoming the defects that in the prior art, a daughter card in an input/output module is not detachably connected with a base, so that the assembly and disassembly are troublesome, and the module is inconvenient to replace.

The invention solves the technical problems through the following technical scheme:

the invention provides a pluggable IO module which comprises a base, a daughter card, a fixing component and a pluggable fuse wire, wherein the fixing component is used for detachably mounting the daughter card on the base, at least one fuse wire hole is formed in the base, and the pluggable fuse wire is inserted into the fuse wire hole.

Preferably, a clamping groove is formed in the base and used for detachably inserting at least one daughter card.

Preferably, the fixing part is a fixing screw, and the left and right sides of the daughter card are respectively provided with a thread structure matched with the fixing screw.

Preferably, the base is further provided with a wiring terminal of the signal line.

Preferably, the back of the base comprises at least two sets of interfaces, and each set of interfaces comprises a power supply interface and a communication interface.

Preferably, the back of the base further comprises at least two 6pin connectors, and the power supply interface and the communication interface share one 6pin connector.

Preferably, the bottom, the top and the side of the daughter card are all provided with vent holes.

The invention also provides a DCS system, which comprises the pluggable IO module.

The positive progress effects of the invention are as follows: according to the pluggable IO module, the base is detachably connected with the daughter card, so that the problems that the module is not easy to disassemble during maintenance and troublesome to disassemble are solved; set up the fuse hole on the base and make but plug fuse expose outside module casing, and then can be timely accurate judge the fuse whether melts, and operate very easily when changing.

Drawings

Fig. 1 is a schematic structural diagram of a pluggable IO module according to a preferred embodiment of the present invention.

FIG. 2 is a disassembled view of the pluggable IO module of the present invention.

FIG. 3 is a back view of a base of a pluggable IO module of the present invention.

FIG. 4 is a bottom view of a base of a pluggable IO module of the present invention.

Fig. 5 is a schematic side view of the pluggable IO module according to the present invention.

Fig. 6 is another schematic structural diagram of the pluggable IO module according to the present invention.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

With reference to fig. 1 to 6, an embodiment of the present invention provides a schematic structural diagram of a pluggable IO module, where the IO module includes a base 1, a daughter card 2, a fixing component 3, and a pluggable fuse 4, where the fixing component 3 is used to detachably mount the daughter card 2 on the base 1, at least one fuse hole 10 is formed in the base 1, and the pluggable fuse 4 is inserted in the fuse hole 10. The base is provided with a clamping groove, and at least one sub card 2 is detachably inserted into the clamping groove. Most daughter cards in the IO modules in the current market are connected with a base in a screw fastening mode, and when replacement and maintenance are performed, a special tool for disassembly and assembly is needed; the invention connects the daughter card 2 with the base 1 in a detachable way, so that the daughter card 2 can be any card for data conversion, and 1-8 daughter cards 2 can be inserted into the base 1, when data conversion of multiple daughter cards is needed, multiple daughter cards can be inserted at the same time, and the replacement is also convenient; the pluggable fuse 4 is arranged in the fuse hole 10 on the base 1, the number of the fuse holes 10 can be set to 1-4, and the pluggable fuse can be directly upwards pulled out by hands when needing to be replaced and is specifically arranged according to needs.

Referring to fig. 2, the fixing member 3 is a fixing screw, and the left and right sides of the daughter card 2 are respectively provided with a thread structure matched with the fixing screw, and the thread structure may be a thin cylindrical shape, or a square shape or other shapes, and may be matched with the fixing screw.

As shown in fig. 3, the base 1 is further provided with signal terminals 5, when the daughter card is replaced, the signal terminals 5 do not need to be removed, therefore, the operation of on-site maintenance and daughter card replacement is greatly facilitated, the back of the base comprises at least two groups of interfaces, each group of interfaces comprises a power supply interface and a communication interface, the two groups of interfaces can be replaced arbitrarily, after one group of interfaces is damaged, the normal operation of the module is not influenced, so that the IO module has more reliability, the back of the base also comprises at least two 6pin connectors 6, the normal work of the module cannot be influenced when any line is in fault, the power supply interface and the communication interface share one 6pin connector 6, ventilation hole 7, ventilation hole 8 and ventilation hole 9 have all been seted up to bottom, top, the side of daughter card, set up three ventilation hole and avoided untimely problem that leads to the damage because of the long-time work heat dissipation of IO module.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides a pluggable IO module which characterized in that, includes base, daughter card, fixed part and pluggable fuse, fixed part be used for with daughter card detachable installs on the base, seted up at least one fuse hole on the base, pluggable fuse inserts and establishes in the fuse hole.

2. The pluggable IO module of claim 1 wherein said base is configured with a card slot, said card slot configured to removably receive at least one daughter card.

3. The pluggable IO module according to claim 1, wherein the fixing member is a fixing screw, and the left and right sides of the daughter card are respectively provided with a thread structure matching with the fixing screw.

4. The pluggable IO module according to claim 1, wherein the base is further provided with a terminal for a signal line.

5. The pluggable IO module of claim 4 wherein the back portion of said base comprises at least two sets of interfaces, each set comprising a power supply interface and a communication interface.

6. The pluggable IO module of claim 5 wherein said back portion of said base further comprises at least two 6pin connectors, said power interface and said communication interface sharing one of said 6pin connectors.

7. The pluggable IO module of claim 1 wherein said daughter card is vented at the bottom, top and sides of said daughter card.

8. A DCS system comprising a pluggable IO module according to any one of claims 1 to 7.