Distributed control system testing device

Abstract

The utility model relates to the technical field of testing devices, in particular to a distributed control system testing device, which is used for testing a DCS (Distributed Control System) and comprises a mobile testing vehicle, universal wheels are arranged at the bottom of the mobile testing vehicle, a cabinet is arranged at the top of the mobile testing vehicle, a testing host is arranged in the cabinet, and a display control unit is arranged on one side of the top of the cabinet; the test host is provided with a processor, and a superior interface and a loop interface which are connected with the processor, and the superior interface and the loop interface are respectively and fixedly arranged on the outer side wall of the cabinet; the superior interface is communicated with an upper computer of the DCS system, and the loop interface is communicated with a loop control unit of the DCS system. According to the utility model, the processor replaces an upper computer and carries out one-to-one or one-to-many management and control on the loop control units, so that the test requirements of the DCS system are met.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a distributed control system testing device. Background Art

[0002] Distributed control system is a new generation of instrument control system based on microprocessor, adopting the design principle of decentralized control function, centralized display operation, and taking into account the design principles of division and autonomy and comprehensive coordination. Before the distributed control system is put into use, it is usually tested to prevent the internal components from not working properly when it is officially put into use.

[0003] At present, the functional test of the DCS system of power plants generally adopts a PLC test system. The PLC system replaces the field actuator to receive the control signal input by the DCS system, and simulates the switch action of the field actuator valve according to the control signal, and feeds back the state of the simulated actuator itself to the DCS system. At the same time, the state of the simulated actuator itself is displayed on the host computer of the PLC system. The test personnel judge the performance of the DCS system based on whether the result displayed by the host computer is consistent with the basic design file of the DCS. This PLC system for testing the function of the DCS system is mainly composed of a PC and a card cabinet. It has a high cost, a large size, and is not convenient to move. In addition, due to the complex configuration process of the PC, it is very inconvenient to operate. Utility Model Content

[0004] The utility model provides a distributed control system test device, which replaces a host computer with a processor and performs one-to-one or one-to-many management and control of loop control units, thereby meeting the testing requirements for a DCS system.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a distributed control system test device, used for testing a DCS system, comprising: a mobile test vehicle, wherein the mobile test vehicle is provided with universal wheels at the bottom and a cabinet at the top, a test host is installed in the cabinet, and a display control unit is provided on one side of the top of the cabinet; the test host is provided with a processor, and an upper interface and a loop interface connected to the processor, and the upper interface and the loop interface are respectively fixedly arranged on the outer side wall of the cabinet; the upper interface communicates with the host computer of the DCS system, and the loop interface communicates with the loop control unit of the DCS system.

[0006] Preferably, a bus interface connected to the processor is also provided outside the cabinet, and the bus interface communicates with a data bus of the DCS system.

[0007] Preferably, it further comprises a mobile printing terminal, which is fixedly arranged below the display control unit and connected to the processor.

[0008] Preferably, the loop interface is provided in multiple numbers, and communicates with each loop control unit of the DCS system one by one.

[0009] Preferably, a storage box is provided on the side of the cabinet facing away from the mobile printing terminal, and the storage box is provided with an extended communication cable, one end of the extended communication cable is connected to the processor, and the other end is provided with a communication connector.

[0010] Preferably, there is also an adapter cable, one end of which is provided with a connector adapted to the communication connector, and the other end of which is provided with a plug adapted to different actuators or sensors.

[0011] The beneficial effects of the utility model are as follows: it replaces the host computer with a processor. Since a test environment is deployed in the processor, the loop control unit can be managed one-to-one or one-to-many during the DCS system test, thereby meeting the test requirements. The mobile test vehicle is used as a carrier, which is convenient for mobile operation, and can carry out test tasks on any node of the DCS system under the action of the display control unit. At the same time, the loop control unit can also be simulated to meet the verification test of the host computer. The mobile test vehicle can monitor and manage the DCS system at any node of the data bus. The mobile printing terminal replaces the printer of the DCS system and follows the mobile test vehicle to complete the data printing and recording function. The extended communication cable can be used to connect the executive components, sensors, etc. of the DCS system in some narrow environments, thereby solving the problem that the mobile test vehicle cannot enter, and with the action of the adapter cable, the compatibility of the communication connector is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the structure of a DCS system distributed control system;

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of a connection method of the utility model.

[0016] In the figure: 1. Mobile test vehicle; 2. Universal wheels; 3. Cabinet; 4. Test host; 5. Processor; 6. Upper interface; 7. Loop interface; 8. Host computer; 9. Loop control unit; 11. Bus interface; 12. Mobile printing terminal; 13. Storage box; 14. Extended communication cable; 15. Communication connector; 16. Display control unit. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings of the utility model to clearly and completely describe the technical solution 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 of 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.

[0018] according to Figure 1 , Figure 2 , Figure 3 As shown, a distributed control system test device is used for testing a DCS system, which includes: a mobile test vehicle 1, wherein the mobile test vehicle 1 is provided with universal wheels 2 at the bottom, and a cabinet 3 is provided at the top, wherein a test host 4 is installed in the cabinet 3, and a display control unit 16 is provided on one side of the top of the cabinet 3; the test host 4 is provided with a processor 5, and an upper interface 6 and a loop interface 7 connected to the processor 5, wherein the upper interface 6 and the loop interface 7 are respectively fixedly arranged on the outer side wall of the cabinet 3; the upper interface 6 communicates with the host computer 8 of the DCS system, and the loop interface 7 communicates with the loop control unit 9 of the DCS system. The loop interface 7 is provided in multiple configurations, and communicates with each of the loop control units 9 of the DCS system one by one.

[0019] In this setting, the processor 5 replaces the host computer 8. Since a test environment is deployed in the processor 5, the loop control unit 9 can be managed one-to-one or one-to-many during the DCS system test to meet the test requirements. The mobile test vehicle 1 serves as a carrier, which is convenient for mobile operation and can carry out test tasks on any node of the DCS system under the action of the display control unit 16. At the same time, the loop control unit 9 can also be simulated to meet the verification test of the host computer 8.

[0020] A bus interface 11 connected to the processor 5 is also provided outside the cabinet 3 , and the bus interface 11 communicates with the data bus of the DCS system.

[0021] The mobile test vehicle 1 can monitor and manage the DCS system at any node of the data bus.

[0022] It also includes a mobile printing terminal 12 , which is fixedly arranged below the display control unit 16 and connected to the processor 5 .

[0023] In this setting, the mobile printing terminal 12 replaces the printer of the DCS system and follows the mobile test vehicle 1 to complete the data printing and recording function.

[0024] The cabinet 3 is provided with a storage box 13 on the side facing away from the mobile printing terminal 12, and the storage box 13 is provided with an extended communication cable 14, one end of which is connected to the processor 5, and the other end is provided with a communication connector 15. A transfer cable is also included, one end of which is provided with a connector adapted to the communication connector 15, and the other end is provided with a plug adapted to different actuators or sensors.

[0025] The extended communication cable 14 in this setting can be used to connect the actuators, sensors, etc. of the DCS system in some narrow environments, thereby solving the problem that the mobile test vehicle 1 cannot enter, and with the help of the adapter cable, the compatibility of the communication connector 15 is improved.

[0026] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A distributed control system test device, used for testing a DCS system, characterized in that ,include: A mobile test vehicle (1), wherein the mobile test vehicle (1) is provided with universal wheels (2) at the bottom and a cabinet (3) at the top, a test host (4) is installed in the cabinet (3), and a display control unit (16) is provided on one side of the top of the cabinet (3); The test host (4) is provided with a processor (5), and an upper interface (6) and a loop interface (7) connected to the processor (5), wherein the upper interface (6) and the loop interface (7) are respectively fixedly arranged on the outer side wall of the cabinet (3); The upper interface (6) communicates with the upper computer (8) of the DCS system, and the loop interface (7) communicates with the loop control unit (9) of the DCS system.

2. A distributed control system test device according to claim 1, characterized in that: A bus interface (11) connected to the processor (5) is also provided outside the cabinet (3), and the bus interface (11) communicates with the data bus of the DCS system.

3. A distributed control system test device according to claim 2, characterized in that: It also includes a mobile printing terminal (12), which is fixedly arranged below the display control unit (16), and the mobile printing terminal (12) is connected to the processor (5).

4. A distributed control system test device according to claim 3, characterized in that: The loop interface (7) is provided in multiple configurations and communicates one by one with each loop control unit (9) of the DCS system.

5. A distributed control system testing device according to claim 4, characterized in that: A storage box (13) is provided on the side of the cabinet (3) facing away from the mobile printing terminal (12), and the storage box (13) is provided with an extended communication cable (14). One end of the extended communication cable (14) is connected to the processor (5), and the other end is provided with a communication connector (15).

6. A distributed control system testing device according to claim 5, characterized in that: A transfer line is also provided, wherein one end of the transfer line is provided with a connector adapted to the communication connector (15), and the other end is provided with a plug adapted to different actuators or sensors.

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