CN220872908U

CN220872908U - PLC heating and ventilation monitoring system

Info

Publication number: CN220872908U
Application number: CN202322281203.XU
Authority: CN
Inventors: 廖锐锋; 黄槐荣; 李文飞; 曾金龙; 韩晓路
Original assignee: Guangdong Hao Yunchangsheng Network LLC
Current assignee: Guangdong Hao Yunchangsheng Network LLC
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-04-30
Anticipated expiration: 2033-08-24

Abstract

The utility model belongs to the technical field of data center heating and ventilation group control systems, and discloses a PLC heating and ventilation monitoring system, which comprises monitoring equipment, wherein the monitoring equipment is sequentially and electrically connected with a weak current cabinet I, a weak current cabinet II and a control cabinet; the weak current cabinet I is internally provided with wiring equipment, a converging switch I, a converging switch II, a server I and a server II; an access switch I and an access switch II are arranged in the weak current cabinet II; a main control CPU, a standby CPU and a plurality of refrigeration unit controllers are arranged in the control cabinet; and the first weak current cabinet and the second weak current cabinet are internally provided with a circulating monitoring system and are electrically connected.

Description

PLC heating and ventilation monitoring system

Technical Field

The utility model relates to the technical field of data center heating and ventilation group control systems, in particular to a PLC heating and ventilation monitoring system.

Background

The conventional DDC monitoring system has the following problems:

First, conventional DDC monitoring system logic is distributed over other unit controllers, the unit controllers fail, and the replacement requires reinjection of control logic.

Secondly, the backup of the DDC main and standby controllers is detected through a heartbeat line, and the reaction time is slower.

Therefore, the application provides a PLC heating and ventilation monitoring system to solve the problems.

Disclosure of utility model

In order to solve the problems, the application provides a PLC heating and ventilation monitoring system.

The PLC heating and ventilation monitoring system provided by the application adopts the following technical scheme:

A PLC heating and ventilation monitoring system comprises monitoring equipment, wherein the monitoring equipment is electrically connected with a weak current cabinet I, a weak current cabinet II and a control cabinet in sequence;

the weak current cabinet I is internally provided with wiring equipment, a converging switch I, a converging switch II, a server I and a server II;

An access switch I and an access switch II are arranged in the weak current cabinet II;

A main control CPU, a standby CPU and a plurality of refrigeration unit controllers are arranged in the control cabinet;

And the first weak current cabinet and the second weak current cabinet are internally provided with a circulating monitoring system and are electrically connected.

Further, the monitoring equipment is electrically connected with the distribution equipment through a network cable, and the first aggregation switch and the second aggregation switch are connected with the distribution equipment in parallel through an optical cable; the first aggregation switch connects the first server and the second server in parallel; the second convergence switch is also connected with the first server and the second server in parallel; and the first server and the second server are connected in parallel with the annular movement monitoring system of the weak current cabinet.

Further, the loop monitoring system in the weak current cabinet II is connected with the access switch I and the access switch II in parallel.

Further, the first access switch is electrically connected with the main control CPU, and the second access switch is electrically connected with the standby CPU; and the main control CPU and the standby CPU are integrated with a refrigerating unit group control controller.

Further, the plurality of refrigeration unit controllers are sequentially connected in series, the main control CPU is electrically connected with the first refrigeration unit controller, and the standby CPU is electrically connected with the last refrigeration unit controller.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) Setting a main control CPU and a standby CPU, wherein the CPU is redundant and is completely hot standby, analyzing and comparing data incoming lines through the CPU, and performing logic control;

(2) The main CPU and the standby CPU are connected through a network loop, each unit control cabinet is provided with a distributed I/O interface module and a switching value/analog value module, on-line hot plug can be realized, the maintenance is easy, and the CPU and the I/O module can be directly replaced on line without stopping.

Drawings

Fig. 1 is a system diagram of the present application.

The reference numerals in the figures illustrate: 1. monitoring equipment; 2. a weak current cabinet I; 21. a wiring device; 22. a first aggregation switch; 23. a convergence switch II; 24. a first server; 25. a second server; 3. a weak current cabinet II; 31. accessing to a first switch; 32. accessing a second switch; 4. a control cabinet; 41. a main control CPU; 42. a standby CPU; 43. a refrigeration unit controller; 5. a loop monitoring system; 44. and a group control controller of the refrigerating unit.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application; it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the protection scope of the present application.

In the description of the present application, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly and include, for example, "connected" as either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Examples:

the present application will be described in further detail with reference to fig. 1.

The embodiment of the application discloses a PLC heating and ventilation monitoring system, which comprises monitoring equipment 1, wherein the monitoring equipment 1 is sequentially and electrically connected with a weak current cabinet I2, a weak current cabinet II 3 and a control cabinet 4;

The weak current cabinet I2 is internally provided with a wiring device 21, a convergence switch I22, a convergence switch II 23, a server I24 and a server II 25;

an access switch I31 and an access switch II 32 are arranged in the weak current cabinet II 3;

A main control CPU41, a standby CPU42 and a plurality of refrigeration unit controllers 43 are arranged in the control cabinet 4;

The first weak current cabinet 2 and the second weak current cabinet 3 are internally provided with a ring motion monitoring system 5 and are electrically connected.

The main control CPU and the standby CPU are respectively in the same type of Siemens S7-1500 series or Siemens S7-400 series.

Referring to fig. 1, a monitoring device 1 is electrically connected with a distribution device 21 through a network cable, and a first aggregation switch 22 and a second aggregation switch 23 are connected with the distribution device 21 in parallel through an optical cable; the aggregation switch I22 is connected with the server I24 and the server II 25 in parallel; the second convergence switch 23 is also connected with the first server 24 and the second server 25 in parallel; the first server 24 and the second server 25 are connected in parallel with the annular motion monitoring system 5 of the first weak electric cabinet 2.

Referring to fig. 1, the ring motion monitoring system 5 in the weak current cabinet two 3 connects the access switch one 31 and the access switch two 32 in parallel.

Referring to fig. 1, an access switch one 31 is electrically connected to a main control CPU41, and an access switch two 32 is electrically connected to a standby CPU42; the main control CPU41 and the standby CPU42 are integrated with a refrigerating unit group control controller 44.

Referring to fig. 1, a plurality of refrigerating unit controllers 43 are sequentially connected in series, and a main control CPU41 is electrically connected with a first refrigerating unit controller 43, and a standby CPU42 is electrically connected with a last refrigerating unit controller 43.

The implementation principle of the PLC heating and ventilation monitoring system provided by the embodiment of the application is as follows:

setting a main control CPU and a standby CPU, wherein the CPU is redundant and is completely hot standby, analyzing and comparing data incoming lines through the CPU, and performing logic control; each unit controller is provided with a plurality of units, so that online maintenance can be realized; if the main control CPU is bad, the system is automatically switched to the standby CPU, at the moment, a new main control CPU can be replaced on line, and after the replacement is finished, the standby CPU program automatically completes data interaction with the main control CPU through the synchronous optical fiber and synchronizes data.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a PLC warms up monitored control system, includes supervisory equipment (1) its characterized in that: the system comprises monitoring equipment (1), wherein the monitoring equipment (1) is sequentially and electrically connected with a first weak-current cabinet (2), a second weak-current cabinet (3) and a control cabinet (4);

The weak current cabinet I (2) is internally provided with wiring equipment (21), a convergence switch I (22), a convergence switch II (23), a server I (24) and a server II (25);

An access switch I (31) and an access switch II (32) are arranged in the weak current cabinet II (3); a main control CPU (41), a standby CPU (42) and a plurality of refrigeration unit controllers (43) are arranged in the control cabinet (4);

The first weak current cabinet (2) and the second weak current cabinet (3) are internally provided with a circulating monitoring system (5) which are connected through OM3 optical fibers;

And the first weak-current cabinet (2) and the second weak-current cabinet (3) are internally provided with a circular motion monitoring system (5) which are electrically connected.

2. The PLC heating and ventilation monitoring system of claim 1, wherein: the monitoring equipment (1) is electrically connected with the distribution equipment (21) through a network cable, and the first aggregation switch (22) and the second aggregation switch (23) are connected with the distribution equipment (21) in parallel through an optical cable; the aggregation switch I (22) connects the server I (24) and the server II (25) in parallel; the second aggregation switch (23) is also connected with the first server (24) and the second server (25) in parallel; the first server (24) is connected with the second server (25) in parallel with the annular movement monitoring system (5) in the first weak-current cabinet (2).

3. The PLC heating and ventilation monitoring system of claim 1, wherein: the annular movement monitoring system (5) in the weak current cabinet II (3) is connected with the access switch I (31) and the access switch II (32) in parallel.

4. The PLC heating and ventilation monitoring system of claim 1, wherein: the first access switch (31) is electrically connected with the main control CPU (41), and the second access switch (32) is electrically connected with the standby CPU (42); and a refrigerating unit group control controller (44) is integrated in both the main control CPU (41) and the standby CPU (42).

5. The PLC heating and ventilation monitoring system of claim 1, wherein: the plurality of refrigerating unit controllers (43) are sequentially connected in series, the main control CPU (41) is electrically connected with the first refrigerating unit controller (43), and the standby CPU (42) is electrically connected with the last refrigerating unit controller (43).