KR101710496B1 - Device for analyzing state of power plant - Google Patents

Abstract

The present invention relates to a plant diagnosing apparatus, and more particularly to a plant diagnosing apparatus, which is connected between a measuring instrument and a first bus or a second bus, and which is capable of controlling the measuring instrument via the first bus or the second bus A first switch module for connecting to the target device, a first switch module connected between the target device and the first bus or the second bus, for controlling the target device via the first bus or the second bus by on / A first bus and a second bus connecting the first switch module and the second switch module, a switch controller for controlling on / off operations of the first switch module and the second switch module, And a control unit for controlling operations of the first bus and the second bus.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a plant diagnostic apparatus, and more particularly, to a plant diagnostic apparatus that can improve the diagnostic efficiency by efficiently connecting the measurement apparatus for measuring the characteristics of various target apparatuses included in the plant and diagnosing the state of the plant, To a plant diagnostic apparatus.

A number of equipments are included in a plant including a power generation facility, and these are finely interlocked to drive the plant. Each of the equipment is closely connected to each other. If any one of them fails or malfunctions, the operation of the plant must be stopped. If the plant is stopped, the maintenance is restarted, and there is a considerable loss It is necessary to periodically and accurately measure the state of various equipment contained in the plant.

In order to check the characteristics of equipment under test (EUT) in the plant, the measurement equipment and the target equipment are connected directly through the switch module and the on / off connection of the switch module is changed according to the target equipment to be tested . Accordingly, a test signal transmitted from the measuring equipment is transmitted to the target equipment by electrically connecting the measuring equipment and the target equipment, and the output signal corresponding to the test signal transmitted to the target equipment is transmitted to the measuring equipment again, Performance, and status. Such a conventional structure is shown in Fig.

1 is a diagram showing a connection relationship between a conventional plant diagnostic apparatus, a measurement apparatus, and a target apparatus. Referring to FIG. 1, a measuring instrument is connected to each of a plurality of switch modules, and each switch module is individually connected to all the target instruments. However, in the conventional structure as shown in FIG. 1, not only the diagnostic equipment is enlarged due to the plurality of switch modules, but also the diagnostic equipment becomes complicated due to the wiring structure between each switch module and the target device.

In addition, if the number of devices under test increases, it is very difficult to connect them with diagnostic equipment, and the wiring structure becomes more complicated.

Korean Patent Publication No. 1999-0038235

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and to miniaturize a diagnostic apparatus for monitoring the state of equipment in a plant.

It is another object of the present invention to eliminate complicated switch connection of a diagnostic device and to efficiently operate the diagnostic device.

Meanwhile, the present invention is intended to propose a plant diagnosing apparatus which is free to add or change target equipment.

In order to solve the above-mentioned problems, an embodiment of the plant diagnosis apparatus of the present invention includes: a first switch module connected to each signal transmitter and each signal receiver of the measurement equipment; a second switch module connected between the first switch module and the target equipment, Wherein the plurality of transmission units are connected through a first bus, the plurality of reception units are connected through a second bus, a switch control unit for controlling on / off operations of the first and second switch modules, And a control unit for controlling operations of the first bus and the second bus according to a connection schedule between the measurement equipment and the target equipment and a data transmission / reception schedule, wherein the first bus comprises a signal transmitted from the measurement equipment to the target equipment Path and the second bus may be a path of a signal transmitted from the target equipment to the instrumentation.

On the other hand, when a signal is transmitted from the measuring equipment to the target equipment, the switch control unit turns on a switch connected to the measuring equipment among the switches of the first switch module, 1 bus, and the switch control unit may turn on a switch connected to the target device among the switches of the second switch module.

delete

In another embodiment of the present invention, when a signal is transmitted from the target equipment to the measurement equipment, the switch control unit turns on a switch connected to the target equipment among the switches of the second switch module, And the switch control unit may turn on a switch connected to the measurement instrument among the switches of the first switch module.
Further, the plant diagnosis apparatus of the present invention may be configured such that the plant diagnosis apparatus further comprises: a first bus module connected between the first bus and the first switch module, or between the second bus and the first switch module, And a photocoupler connected between the second bus and the second switch module.
Further, the plant diagnosis apparatus of the present invention may be configured such that the plant diagnosis apparatus further comprises: a first bus module connected between the first bus and the first switch module, or between the second bus and the first switch module, And a fuse connected between the second bus and the second switch module.
Further, in the plant diagnosis apparatus of the present invention, the target equipment transmits and receives signals to and from the measurement equipment through a plurality of channels, and the plant diagnosis apparatus determines whether the signal transmitted / received by the target equipment is allocated to the first bus or the second bus And a storage unit for storing received channel information.

In addition, the controller may control operations of the first bus and the second bus according to channel information stored in the storage unit.

According to the present invention described above, it is possible to downsize the diagnostic apparatus for monitoring the condition of the target equipment in the plant.

In addition, it is possible to eliminate the complicated switch connection of the plant diagnosis apparatus, thereby simplifying the structure. In addition, the plant diagnosis apparatus can be efficiently operated using the simplified configuration.

Meanwhile, the present invention is free from addition and modification of target equipment, and is improved in terms of expandability compared with the conventional one, and various problems caused by signal collision can be prevented in advance.

1 is a diagram showing a connection relationship between a conventional plant diagnostic apparatus, a measurement apparatus, and a target apparatus.
2 is a diagram illustrating a plant diagnostic apparatus according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a structure in which a plant diagnosis apparatus, a measurement apparatus, and a target apparatus are connected according to an embodiment of the present invention.
4 and 5 are diagrams illustrating a plant diagnostic apparatus according to another embodiment of the present invention.

Hereinafter, a plant diagnostic apparatus according to the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention. In addition, the matters described in the attached drawings may be different from those actually implemented by the schematic drawings to easily describe the embodiments of the present invention.

The expression " comprising ", on the other hand, merely refers to the presence of the elements as an expression of " open ", and should not be understood as excluding any additional elements.

Also, the expressions such as 'first, second, etc.' are expressions used only for distinguishing a plurality of configurations, and do not limit the order or other features among the configurations.

2 is a diagram illustrating a plant diagnostic apparatus according to an embodiment of the present invention.

In this embodiment, the plant diagnostics device is connected between the metrology equipment and the first bus or second bus and is connected to the target equipment via the first bus or the second bus by an on / 1 switch module coupled between the target device and the first bus or second bus for connecting the target device to the metrology equipment via the first bus or the second bus by an on / A first bus and a second bus for connecting the first switch module and the second switch module, a switch controller for controlling ON / OFF operations of the first switch module and the second switch module, And a control unit for controlling the operation of the second bus.

Unlike the prior art, the present invention connects the measurement equipment and the target equipment through the first bus and the second bus instead of directly. The control unit controls the first bus and the second bus, and controls the first switch module and the second switch module, which are connected by the first bus and the second bus, in the switch control unit.

The first bus and the second bus are paths for transmitting and receiving data between the measurement equipment and the target equipment. The first bus and the second bus are formed by a plurality of channels, and signals can be allocated to the respective channels, and data can be transmitted and received between various subjects (measurement equipment, target equipment) by one bus structure. For example, each of the first bus and the second bus may be composed of 16 channels, and data can be transmitted and received using each channel.

The switch control unit is a configuration for selectively connecting the measurement equipment or the target equipment to the first and second buses via the first switch module or the second switch module. The switch control unit controls the ON / OFF operation of the plurality of switches included in the first switch module and the second switch module according to the connection schedule between the measurement equipment and the target equipment, so that a test signal and an output signal To be transmitted and received.

The control unit is a configuration for controlling operations of the first bus and the second bus. Unlike the conventional configuration in which the measurement equipment and the target equipment are connected by independent wiring for each channel, the present invention connects the measurement equipment and the target equipment using the first bus and the second bus, and a plurality of channels , It is necessary to control at what point which measurement equipment and which target equipment will transmit and receive data. To this end, the control unit controls operations of the first bus and the second bus according to the connection schedule of the measurement equipment and the target equipment and the data transmission / reception schedule. The first bus is a path of a signal transmitted from the measuring equipment to the target equipment and the second bus is a path of a signal transmitted from the target equipment to the measuring equipment.

The switch control unit may be implemented by a processor or the like for generating and transmitting a control signal for controlling on / off of a switch. The control unit may also be implemented by a processor capable of controlling the operation of the bus. But can also be implemented by various electronic devices capable of handling the above-described operations.

FIG. 3 is a diagram illustrating a structure in which a plant diagnosis apparatus, a measurement apparatus, and a target apparatus are connected according to an embodiment of the present invention. 3, various configurations included in the measurement equipment are connected to the first switch module. DI (Digital Input) and DO (Digital Output) are for outputting / receiving digital signals, and AI (Analog Input) and AO (Analog Output) are for outputting / receiving analog signals. PI and PO are parallel signals (Parallel Input / Output), and SI and SO are for outputting / receiving a single signal (Single Input / Output).

The target equipment connected to the plant diagnosis apparatus uses at least one of a digital signal, an analog signal, a parallel signal, and a single signal as a signal used for diagnosis depending on the type and characteristics thereof, which may be different for each target equipment. In order to provide a test signal corresponding to each target device, the present invention is characterized in that each signal transmitter (DI, AI, PI, SI) and signal receivers (DO, AO, PO, SO) It is connected to the switch. The signal input from each signal transmitter is transmitted to the target equipment through the first bus, and the signal received from the target equipment is received by the signal receiver through the second bus. The measuring equipment can diagnose the condition of the target equipment by comparing the transmitted signal with the received signal.

More specifically, when a signal is transmitted from the measuring equipment to the target equipment, the switch control unit turns on a switch connected to the measuring equipment among the switches of the first switch module, The switch control unit may turn on a switch among the switches of the second switch module connected to the target device so as to transmit an appropriate signal required for diagnosis from the measurement equipment to the target equipment.

In contrast, when a signal is transmitted from the target equipment to the measurement equipment, the switch control unit turns on a switch connected to the target equipment among the switches of the second switch module, 2 bus, and the switch control unit is able to receive an output signal corresponding to the test signal by turning on a switch among the switches of the first switch module connected to the measurement equipment.

4 is a diagram illustrating a plant diagnosis apparatus according to another embodiment of the present invention.

The present embodiment may further include a photocoupler connected between the first bus or second bus and the first switch module, or between the first bus or second bus and the first switch module.

Although the present invention utilizes a bus structure and controls the switch module, it is possible to transmit and receive various signals in a complicated structure. However, if there is a problem in the control of the switch module, a signal may collide with the bus . In the event of a signal collision, a different type of signal may be input to the measuring or target equipment, which may be the cause of failure of the measuring equipment or the target equipment. In order to prevent this, the present invention further includes a photocoupler between the switch module and the bus. The photocoupler can prevent unintended electrical signals from flowing into the measuring equipment and the target equipment.

Another embodiment of the present invention may include a fuse connected between the first bus or second bus and the first switch module, or between the first bus or second bus and the first switch module. Even when the fuse is used, even if an unexpected electric signal is generated on the bus, the signal can be prevented from flowing into the measurement equipment and the target equipment.

5 is a diagram illustrating a plant diagnosis apparatus according to another embodiment of the present invention.

In the present embodiment, the target equipment transmits and receives signals to and from the measurement equipment through a plurality of channels, and the plant diagnosis device stores the channel information allocated to the first bus or the second bus by signals transmitted and received by the target equipment And the like.

The storage unit operates in conjunction with the switch control unit and the control unit, and may be implemented by a memory device capable of storing specific information. A switching schedule for diagnosing each target device and a channel allocation schedule of the bus are stored in the storage unit and the switching control unit and the control unit use the same to control the switching module and the bus to utilize the plant diagnosis apparatus to which the bus structure is applied .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. You should see.

Claims (8)

A first switch module connected to each signal transmitter and each signal receiver of the measuring instrument;
A second switch module connected between the first switch module and the target device, each of the signal transmitters connected through a first bus, and each of the signal receivers connected through a second bus;
A switch control unit for controlling on / off operations of the first switch module and the second switch module; And
And a controller for controlling operations of the first bus and the second bus according to a connection schedule and a data transmission / reception schedule of the measurement equipment and the target equipment,
Wherein the first bus is a signal path transmitted from the metrology equipment to the target equipment,
And the second bus is a path of a signal transmitted from the target equipment to the measurement equipment.
delete The method according to claim 1,
When transmitting a signal from the measuring equipment to the target equipment,
Wherein the switch controller turns on a switch of the first switch module connected to the measurement instrument,
Wherein the control unit activates the first bus assigned to the target equipment,
Wherein the switch control unit switches the switch connected to the target device among the switches of the second switch module,
The method according to claim 1,
Upon signal transmission from the target device to the instrumentation,
The switch control unit turns on a switch connected to the target device among the switches of the second switch module,
Wherein the controller activates the second bus assigned to the instrument,
Wherein the switch controller turns on a switch connected to the measuring instrument among the switches of the first switch module,
The method according to claim 1,
And a second switch module connected between the first bus and the first switch module or between the second bus and the first switch module or between the first bus and the second switch module or between the second bus and the second switch module, Lt; / RTI >
RTI ID = 0.0 >
The method according to claim 1,
And a second switch module connected between the first bus and the first switch module or between the second bus and the first switch module or between the first bus and the second switch module or between the second bus and the second switch module, A fuse connected to the battery;
RTI ID = 0.0 >
The method according to claim 1,
Wherein the target equipment transmits and receives signals to and from the metrology equipment via a plurality of channels,
The plant diagnostic apparatus
A storage unit for storing channel information allocated to a signal transmitted or received by the target equipment from a first bus or a second bus;
RTI ID = 0.0 >
The method of claim 7,
Wherein the controller is configured to control the operation of the first bus and the second bus according to channel information stored in the storage unit,

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