KR102141544B1 - System for communication between optical modems in nuclear power plant core portect calculator system, plan data acquisition system, plant computer system and engineered safety features actuation system - Google Patents

Abstract

According to an embodiment of the present invention, a communication system between optical modems can transmit and receive data between a plurality of systems or computing devices provided in each of the plurality of systems by using a plurality of optical modems provided in the plurality of systems of a nuclear power plant. To this end, the plurality of optical modems may comprise: a signal generation unit for receiving data from any one of the plurality of computing devices or the plurality of computing devices, and generating an optical transmission signal having a preset transmission wavelength value in response to the received data; a wavelength division multiplexing (WDM) unit which transmits the optical transmission signal through a single transmission and reception line and receives an optical reception signal having a preset reception wavelength value through the transmission and reception line; and a data transfer unit which transfers data corresponding to the optical reception signal to any one device.

Description

Communication system between optical modems provided in the core protection computing system of the nuclear power plant, power plant data collection system, power plant computer system, and engineering safety equipment operation system. , PLANT COMPUTER SYSTEM AND ENGINEERED SAFETY FEATURES ACTUATION SYSTEM}

It relates to a communication system between optical modems provided in a core protection computing system of a nuclear power plant, a power plant data collection system, a power plant computer system, and an engineering safety facility operating system, and more specifically, data between optical modems provided in multiple systems of a nuclear power plant. It relates to a technical idea of transmitting and receiving.

The core protection calculator system (CPCS) used in a nuclear power plant is part of a reactor protection system (RPS), and includes a plurality of core protection calculators (CPCs) and a control rod collective calculator (CEAC). ; Control Element Assembly Calculator), which monitors the nuclear reactor's core state and nuclear reactivity, and protects the reactor core from unstable conditions.

The power plant data collection system is an input system of a plant monitoring system (PMS), which is responsible for signal processing and isolation of various analog and digital input signals in the power plant, and a power plant computer system (PCS). It provides a means of linkage.

The operating system of the engineering safety facility is a system that operates safety devices to mitigate the result of the accident within the allowance in the event of a design basis accident (DBA), and receives each operation signal from the engineering safety facility from the reactor protection system. It provides an operation signal.

Generally, optical modems provided in each of the above-listed systems include RS232 optical modems, CPOIA (CEA Position Optical Isolation Assembly) optical modems, and Engineered Safety Features Actuation System (ESFAS) optical modems.

Specifically, the RS232 optical modem may perform a function of transmitting and receiving an electrically isolated digital signal between a core protection calculator system-a power plant monitoring system or a power plant monitoring system-a power plant computer system.

The CPOIA optical modem performs the function of converting the control rod position signal from the analog to digital optical signal in the core protection operator of the core protection operator system and transmitting it to each channel of the control rod collective operator, and converting the received digital optical signal into an analog signal. Can.

The ESFAS optical modem converts and transmits the contact signal (short circuit/disconnection) of the engineering safety facility operating system to a periodic digital optical signal, and performs the function of converting the received digital optical signal into the contact signal (short circuit/disconnection). Can.

1A to 1B are diagrams for explaining a communication system using a general optical modem applied to each of a plurality of systems of a nuclear power plant.

1A to 1B, reference numeral 110 denotes a communication system using a general RS232 optical modem, and reference numeral 120 denotes a communication system using a general CPOIA / ESFAS optical modem.

According to reference numeral 110, an existing communication system transmits and receives data through a transmission line and a reception line provided between a plurality of optical modems 113 and 114 provided in a plurality of systems 111 and 112.

According to reference numeral 120, in the existing communication system, a single transmission line is provided between the optical transmission modem 123 and the optical reception modem 124 provided in the plurality of systems 111 and 112, respectively. Data such as control rod position signals are transmitted and received.

That is, the communication system according to reference numeral 110 requires two optical lines (transmission line and reception line), and there is a problem that cost increases due to waste of optical lines.

In addition, the communication systems of reference numerals 110 to 120 do not have a spare line when the optical line is disconnected, which may affect the normal operation of the power plant during the repair or repair period, and when the optical modem malfunctions, check the method and take immediate action in response to the malfunction There is a problem that it is difficult to take.

Korean Patent Publication No. 2003-0039196, "Core Protection System for Nuclear Power Plants"

The present invention seeks to provide a communication system between optical modems that can secure and repair the optical line immediately even when the optical line is disconnected.

In addition, the present invention is to provide a communication system between optical modems capable of operating a nuclear power plant without any additional maintenance or repair even in the event of a malfunction of an optical modem or disconnection of an optical line.

A communication system between optical modems according to an embodiment is a plurality of optical modems provided in a plurality of systems of a nuclear power plant, and may transmit and receive data during a calculation period provided in each of a plurality of systems or a plurality of systems.

To this end, a plurality of optical modems according to an embodiment is a signal for receiving data from a plurality of systems or any one of the computing devices, and generating an optical transmission signal having a predetermined transmission wavelength value corresponding to the received data A generator, a WDM unit that transmits an optical transmission signal through a single transmission/reception line, and receives an optical reception signal having a preset reception wavelength value through a transmission/reception line, and data corresponding to the optical reception signal to any one device It may include a data transmission unit to transmit.

The WDM unit according to an embodiment may convert a line through which an optical transmission signal and an optical reception signal are transmitted to a spare line in response to whether a modem diagnostic signal is received.

According to one side, a plurality of systems include a Core Protection Calculator System (CPCS), a Plant Data Acquisition System (PDAS), a Plant Computer System (PCS), and an engineering safety facility operating system. (ESFAS; Engineered Safety Features Actuation System).

According to one side, the plurality of optical modems may be RS232 optical modems.

According to one side, any one of the plurality of optical modems, a first signal generating unit for generating a first optical transmission signal in response to data input from a system or an operator corresponding to any one optical modem, and a first The first WDM unit which transmits the optical transmission signal and receives the second optical transmission signal as the optical reception signal, and the first data that transmits data corresponding to the second optical transmission signal to a system or operator corresponding to any one optical modem. It may include a delivery unit.

According to one side, the other optical modem of the plurality of optical modems, a second signal generating unit for generating a second optical transmission signal in response to data input from a system or operator corresponding to the other optical modem, and a second A second WDM unit that transmits an optical transmission signal and receives the first optical transmission signal as an optical reception signal, and transmits data corresponding to the received first optical transmission signal to a system or operator corresponding to another optical modem; 2 may include a data transmission unit.

According to one side, the first optical transmission signal and the second optical transmission signal may have different wavelength values.

According to one side, a communication system between optical modems determines whether a plurality of optical modems are operating normally, generates a modem diagnostic signal in response to the determination result, and transmits a modem diagnostic signal to a corresponding WDM unit. It may further include.

According to one side, the optical modem operation monitoring unit may determine whether a plurality of optical modems operate normally, including at least one of a Timer & Watch Dog Timer (WDT) and a Cycical Redundancy Check (CRC) circuit.

A communication system between optical modems according to another embodiment may transmit and receive data during an operation period provided in each of a plurality of systems or a plurality of systems using an optical transmission modem and an optical reception modem provided in a plurality of systems of a nuclear power plant.

To this end, the optical transmission modem receives a plurality of data from a system or operator corresponding to the optical transmission modem, and a plurality of signals generating a plurality of optical transmission signals having different wavelength values corresponding to each of the received plurality of data It may include a first WDM unit for performing wavelength division multiplexing (WDM) in response to a generator and a plurality of optical transmission signals, and transmitting the wavelength division multiplexed optical transmission signal through a single transmission/reception line.

In addition, the optical reception modem receives a wavelength division multiplexed optical transmission signal, and a second WDM unit and a plurality of optical reception signals for generating a plurality of optical reception signals by dividing the wavelength division multiplexed optical transmission signals for different wavelength values. It may include a plurality of data transmission unit for transmitting a plurality of data corresponding to the operation unit corresponding to the optical receiving modem.

According to one side, the plurality of systems operates a core protection calculator system (CPCS) having a core protection calculator (CPC) and a control element assembly calculator (CEAC) and an engineering safety facility. System (ESFAS; Engineered Safety Features Actuation System) may include at least one.

According to one side, at least one of the modem of the optical transmission modem and the optical reception modem may be at least one modem of a CPOIA (CEA Position Optical Isolation Assembly) modem and an Engineered Safety Features Actuation System (ESFAS) modem.

According to one side, the communication system between the optical modems may further include an optical modem operation monitoring unit to determine whether or not normal operation of at least one of the optical transmission modem and the optical reception modem is performed.

According to one side, the optical modem operation monitoring unit may determine whether at least one modem operates normally, including at least one of a Timer & Watch Dog Timer (WDT) and a Cycical Redundancy Check (CRC) circuit.

According to one side, the optical modem operation monitoring unit generates a modem diagnostic signal in response to the determination result, transmits the modem diagnostic signal to at least one modem, and at least one of the first WDM unit and the second WDM unit diagnoses the modem. In response to the reception of a signal, a line for transmitting and receiving a wavelength division multiplexed optical transmission signal can be switched to a preliminary line.

According to one embodiment, it is possible to secure the spare line and immediately perform repair and repair even when the optical line is disconnected.

According to one embodiment, even in the event of a malfunction of the optical modem or disconnection of the optical line, the nuclear power plant can be operated without any additional maintenance or repair.

1A to 1B are diagrams for explaining a communication system using a general optical modem applied to a plurality of systems of a nuclear power plant.
2 is a view for explaining a communication system between optical modems according to an embodiment.
3 is a view for explaining an implementation example of a communication system between optical modems according to an embodiment.
4 is a view for explaining an example of an optical modem operation monitoring unit of a communication system between optical modems according to an embodiment.
5 is a view for explaining a communication system between optical modems according to another embodiment.
6 is a view for explaining an example of an optical modem operation monitoring unit of a communication system between optical modems according to another embodiment.

Hereinafter, various embodiments of this document are described with reference to the accompanying drawings.

It should be understood that the embodiments and terms used therein are not intended to limit the technology described in this document to specific embodiments, and include various modifications, equivalents, and/or substitutes of the embodiments.

In the following description of various embodiments, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

In addition, terms to be described later are terms defined in consideration of functions in various embodiments, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification.

In connection with the description of the drawings, similar reference numerals may be used for similar elements.

Singular expressions may include plural expressions unless the context clearly indicates otherwise.

In this document, expressions such as “A or B” or “at least one of A and/or B” may include all possible combinations of items listed together.

Expressions such as "first," "second," "first," or "second," can modify the components, regardless of order or importance, to distinguish one component from another component It is used but does not limit the components.

When it is stated that one (eg, first) component is “connected (functionally or communicatively)” to another (eg, second) component or is “connected,” a component is described above as another component. It may be directly connected to the element, or may be connected through another component (eg, third component).

In this specification, "configured to (or configured) (configured to)", depending on the situation, for example, in hardware or software, "suitable for," "having the ability to "," has been modified to It can be used interchangeably with "made to do," "can do," or "designed to do."

In some situations, the expression "device configured to" may mean that the device "can" with other devices or parts.

For example, the phrase “processors configured (or set) to perform A, B, and C” means by executing a dedicated processor (eg, an embedded processor) to perform the operation, or one or more software programs stored in the memory device. , It may mean a general-purpose processor (eg, CPU or application processor) capable of performing the corresponding operations.

Also, the term'or' means an inclusive OR'inclusive or' rather than an exclusive OR.

That is, unless stated otherwise or unclear from the context, the expression'x uses a or b'means any of the natural inclusive permutations.

In the above-described specific embodiments, components included in the present invention are expressed in singular or plural according to the specific embodiments presented.

However, the singular or plural expressions are appropriately selected for the situation presented for convenience of explanation, and the above-described embodiments are not limited to the singular or plural components, and even the components expressed in plural are composed of the singular or , Even a component represented by a singular number may be composed of a plurality.

On the other hand, the description of the invention has been described with respect to specific embodiments, various modifications are possible within the limits that do not depart from the scope of the technical spirit of the various embodiments.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims described below but also by the claims and equivalents.

2 is a view for explaining a communication system between optical modems according to an embodiment.

Referring to FIG. 2, the communication system between optical modems according to an embodiment secures a spare line to enable immediate repair when the optical line is disconnected, and operates without additional maintenance or repair when the optical modem malfunctions or when the optical line is disconnected. This is possible.

The communication system 200 according to an embodiment is a plurality of optical modems 230 and 240 provided in each of a plurality of systems 210 and 220 of a nuclear power plant, and a plurality of systems 210 and 220 or a plurality of systems ( 210, 220) Data can be transmitted and received during the operation period provided in each.

Hereinafter, a communication system applied to a plurality of systems of a nuclear power plant will be described with only two systems, but the communication system 200 according to an embodiment is not limited thereto, and may be applied to communication between three or more systems.

According to one side, the plurality of systems 210 and 220 includes a core protection calculator system (CPCS), a plant data acquisition system (PDAS), a plant computer system (PCS), and It may include at least one of an engineered safety features actuation system (ESFAS). Also, the plurality of optical modems 230 and 240 may be RS232 optical modems.

The optical modem 230 may include a signal generation unit 231, a WDM unit 232, and a data transmission unit 233.

Hereinafter, one optical modem 230 of the plurality of optical modems 230 and 240 will be described, but the other optical modem 240 also includes the same units as the optical modem 230 described below, and the same You can perform the operation.

Specifically, the signal generation unit 231 according to an embodiment receives data from any one of the system 210 or any of the calculators provided in the system 210 and corresponds to the received data Thus, an optical transmission signal having a predetermined transmission wavelength value can be generated.

According to one side, the optical modem 230 may include a plurality of signal generators 231, and each of the plurality of signal generators 231 may receive data from any one device and have different wavelength values. It is also possible to generate a plurality of optical transmission signals.

For example, the data received from the signal generator 231 is data for transferring from one system 210 provided with the optical modem 230 to another system 220, and data in the form of digital signals. Can be

The WDM unit 232 according to an embodiment may transmit an optical transmission signal through a single transmission/reception line and receive an optical reception signal having a preset reception wavelength value through the transmission/reception line.

According to one side, when the WDM unit 232 receives a plurality of optical transmission signals having different wavelength values from each of the plurality of signal generation units 231, wavelength division multiplexing a plurality of optical transmission signals having different wavelength values (Wavelength Division Multiplexing; WDM) can be transmitted by a single transmission and reception line.

For a more specific example, the WDM unit 232 may further include a light coupling element and a polarization element.

이고, 제2 광 송신신호의 파장이

인 경우, 파장이

+

인 광 송신신호를 출력 단자를 통해 편광 소자로 전파시킬 수 있다.The optical coupling element has a wavelength of a first optical transmission signal among a plurality of optical transmission signals.

And the wavelength of the second optical transmission signal

If is, the wavelength

+

The phosphorescence transmission signal can be propagated to the polarizing element through the output terminal.

+

인 복수의 광 송신신호를 서로 수직을 유지하며 전파하도록 출력할 수 있다. 예를 들면, 편광 소자는

+

인 복수의 광 송신신호를 각각 X 편광 및 Y 편광으로 전파시킬 수 있다.The polarizing element may be implemented as an arrayed waveguide grating (AWG) or a power coupler, and the wavelength is

+

It is possible to output a plurality of optical transmission signals to propagate while maintaining a vertical relationship with each other. For example, a polarizing element

+

A plurality of phosphorous optical transmission signals can be propagated by X polarization and Y polarization, respectively.

That is, the WDM unit 232 according to an embodiment uses a polarization element, so that even if the transmission/reception lines are not accurately aligned with the WDM unit 232, optical power between the first optical transmission signal and the second optical transmission signal It is possible to prevent the difference.

According to one side, the WDM unit 232 is implemented when a plurality of data transmission units 233 are implemented, and the optical reception signals received through the transmission/reception lines are different optical reception signals having different reception wavelength values. A plurality of optical reception signals having a reception wavelength value may be divided for each wavelength value, and each of the divided optical reception signals may be transmitted to respective corresponding data transmission units 233.

To this end, the WDM unit 232 may further include a WDM coupler that distinguishes optical received signals of different wavelengths.

+

인 복수의 광 수신신호를 WDM 커플러의 입력으로 수신하여, 복수의 광 수신신호를 파장이

인 제1 광 수신신호와, 파장이

인 제2 광 수신신호로 분할할 수 있다.For example, the WDM unit 232 has a wavelength through a transmission/reception line.

+

A plurality of optical reception signals are received through the input of the WDM coupler, and the wavelengths of the multiple optical reception signals are received.

The first optical received signal and the wavelength

It can be divided into the second optical received signal.

인 광을 수신하는 제1 데이터 전달부로 전달하고, 분할된 제2 광 수신신호는 파장이

인 광을 수신하는 제2 데이터 전달부로 전달할 수 있다.In addition, the WDM unit 232 has a divided first optical received signal has a wavelength.

It transmits the phosphorus light to the first data transmission unit, and the divided second light reception signal has a wavelength.

It can be transferred to a second data transmission unit that receives phosphorescence.

That is, the existing RS232-based optical modem must use both two optical lines (transmission line, reception line), but the RS232-based optical modem 230 according to an embodiment performs wavelength division multiplexing to perform one optical transmission signal. It is possible to transmit and receive with only the line of, so that the other one can be secured as a spare line.

In other words, the optical modem 230 according to an embodiment may secure a spare line in an existing structure without additionally installing an optical line.

According to one side, the optical transmission signal and the optical reception signal may be optical signals having different wavelength values.

The data transmission unit 233 according to an embodiment may transmit data corresponding to the optical reception signal to any one of the systems 210 or the calculators provided in the one system 210.

Meanwhile, the WDM unit 232 according to an embodiment may convert a line through which an optical transmission signal and an optical reception signal are transmitted to a spare line in response to whether a modem diagnostic signal is received.

According to one side, the communication system 210 determines whether the optical modem 230 operates normally, generates a modem diagnostic signal in response to the determination result, and the WDM unit of the optical modem 230 corresponding to the modem diagnostic signal. It may further include an optical modem operation monitoring unit to transmit to (232).

That is, the communication system 200 according to an embodiment may operate the nuclear power plant normally without additional maintenance or repair by switching to a spare line when an optical modem malfunctions or a transmission/reception line is disconnected through the optical modem operation monitoring unit.

According to one side, the optical modem operation monitoring unit may determine whether the optical modem 230 operates normally, including at least one of a Timer & Watch Dog Timer (WDT) and a Cycical Redundancy Check (CRC) circuit.

In addition, the optical modem operation monitoring unit may determine whether the optical modem 230 is normally operated using COUNT.

Specifically, WDT is a type of counter, and if the optical modem 230 does not operate normally and malfunctions, it monitors it, increases the counter value, and generates an interrupt when it exceeds a certain value to initialize the state of the optical modem. The subsequent processing can be performed.

For a more specific example, the WDT according to an embodiment detects a normal operation state of the optical modem 230 and counts an abnormal state to generate a reset signal for the system when it continues for a certain period, in addition to a WDT counter, a reset alarm As a reference for generating a signal, a reset alarm register having a reference value set and a comparator generating a reset alarm signal when the current counter count value reaches a reference value by comparing the count value of the WDT counter and the reference value set in the reset alarm register may be included. have.

The reset alarm register may set a reference value as a reference for generating a reset alarm signal, and output the set value to a comparator.

The comparator may compare the reference value set in the reset alarm register with the current count value counted in the WDT counter, and generate a reset alarm signal when the current counter count value exceeds the reference value set in the reset alarm register.

That is, the WDT according to an embodiment generates an alarm signal before the optical modem 230 is reset because the count value of the WDT counter overflows, so that the system level precalculates the time to initialize the WDT counter. The process can be excluded.

The detailed configuration of the communication system 200 between the optical modems according to an embodiment will be described in more detail with reference to FIGS. 3 to 4.

3 is a view for explaining an implementation example of a communication system between optical modems according to an embodiment.

3, the communication system 300 according to an embodiment may include a first optical modem 310 and a second optical modem 320, each of a plurality of optical modems (310, 320) It can be provided in each of the system.

According to one side, the first optical modem 310 transmits the first optical signal in response to data input from an operator provided in a system provided with the first optical modem 310 or a system provided with the first optical modem 310. Corresponding to the first signal generating unit 311 for generating a signal, the first WDM 312 unit for transmitting the first optical transmission signal and receiving the second optical transmission signal as an optical reception signal and the second optical transmission signal It may include a first data transmission unit 313 for transmitting the data to the system or operator corresponding to the first optical modem 310.

Further, the second optical modem 320 transmits a second optical transmission signal in response to data input from an operator provided in a system equipped with the second optical modem 320 or a system equipped with the second optical modem 320. The second signal generating unit 321 to generate, the second WDM 322 unit for transmitting the second optical transmission signal and receiving the first optical transmission signal as an optical reception signal, and data corresponding to the first optical transmission signal It may include a second data transmission unit 323 for transmitting to the system or operator corresponding to the second optical modem (320).

For example, the first signal generation unit 311 and the second signal generation unit 321, the first WDM unit 312 and the second WDM unit 322, the first data transmission unit 313 and the second data Each of the transmission units may perform the same function.

In other words, the first WDM unit 312 of the first optical modem 310 transmits the first optical transmission signal generated by the first signal generation unit 311 to the second optical modem 320 through a single transmission/reception line. The second WDM unit 322 of the second optical modem 320 may receive the first optical transmission signal as an optical reception signal and transmit it to the second data transmission unit 323.

Similarly, the second WDM unit 322 of the second optical modem 320 transmits the second optical transmission signal generated by the second signal generation unit 321 to the first optical modem 310 through a single transmission/reception line. The first WDM unit 312 of the first optical modem 310 may receive the second optical transmission signal as an optical reception signal and transmit the second optical transmission signal to the first data transmission unit 313.

According to one side, the first optical transmission signal and the second optical transmission signal may be signals having different wavelength values.

For example, the wavelength value of the first optical transmission signal may be 850 nm, and the wavelength value of the second optical transmission signal may be 1,310 nm. In other words, the wavelength value of the optical transmission signal of the first optical modem 310 may be 850 nm, and the wavelength value of the optical reception signal may be 1,310 nm. In addition, the wavelength value of the optical transmission signal of the second optical modem 320 may be 1,310 nm, and the wavelength value of the optical reception signal may be 850 nm.

4 is a view for explaining an example of an optical modem operation monitoring unit of a communication system between optical modems according to an embodiment.

Referring to FIG. 4, the optical modem operation monitoring unit 420 determines whether a plurality of optical modems 410 are operating normally, generates a modem diagnostic signal in response to the determination result, and corresponds to the optical modem diagnostic signal. Can be transmitted to the modem.

For example, the plurality of optical modems 410 may be optical modems provided in one system, but may also be optical modems provided in different systems.

In addition, a plurality of optical modems 410 may be connected to one optical modem operation monitoring unit 420, and only one optical modem may be connected to one optical modem operation monitoring unit 420.

Specifically, the optical modem operation monitoring unit 420 may monitor data transmitted and received between each of the plurality of optical modems 410 and a system or operator corresponding to the plurality of optical modems 410, based on the monitoring results It may be determined whether the plurality of optical modems 410 operate normally.

According to one side, the optical modem operation monitoring unit 420 may determine whether the plurality of optical modems 410 are normally operated, including at least one of a Timer & Watch Dog Timer (WDT) and a Cycical Redundancy Check (CRC) circuit. have.

5 is a view for explaining a communication system between optical modems according to another embodiment.

In other words, FIG. 5 is a view for explaining another embodiment of a communication system between optical modems according to an embodiment described with reference to FIGS. 2 to 4, and communication between optical modems according to an embodiment of the contents described below Descriptions that overlap with those described through the system will be omitted.

Referring to FIG. 5, the communication system 500 according to another embodiment is an optical transmission modem and an optical reception modem provided in a plurality of systems of a nuclear power plant, and transmits data in a calculation period provided in each of a plurality of systems or a plurality of systems. It can transmit and receive.

To this end, the communication system 500 according to another embodiment may include an optical transmission modem 510 and an optical reception modem 520.

For example, the optical reception modem 520 may be a modem provided in each system of the nuclear power plant, and the optical transmission modem 510 may be a modem provided in each system of the nuclear power plant or a separate linkage with each system of the nuclear power plant. It may be a modem provided in the device.

In addition, the data transmitted and received by the optical transmission modem 510 and the optical reception modem 520 may include a position signal of the control rod. For example, the first data may include a first control rod position signal, and the second data may include a second control rod position signal.

According to one side, the plurality of systems operates a core protection calculator system (CPCS) having a core protection calculator (CPC) and a control element assembly calculator (CEAC) and an engineering safety facility. System (ESFAS; Engineered Safety Features Actuation System) may include at least one.

In addition, at least one modem of the optical transmission modem 510 and the optical reception modem 520 may be at least one modem of a CEA Position Optical Isolation Assembly (CPOIA) modem and an Engineered Safety Features Actuation System (ESFAS) modem.

Specifically, the optical transmission modem 510 according to another embodiment may include a plurality of data (first data, first data) from an operator provided in a system corresponding to the optical transmission modem 510 or a system corresponding to the optical transmission modem 510. 2 data), and a plurality of signal generators 511 and 512 for generating a plurality of optical transmission signals having different wavelength values corresponding to each of the received plurality of data (first data and second data). It can contain.

인 광 송신신호를 생성하고, 제2 신호 생성부(512)는 파장이

인 광 송신신호를 생성할 수 있다.For example, the first signal generator 511 has a wavelength

Phosphorescent optical transmission signal is generated, and the second signal generator 512 has a wavelength.

A phosphorescence optical transmission signal can be generated.

In addition, the optical transmission modem 510 according to another embodiment performs wavelength division multiplexing (WDM) in response to a plurality of optical transmission signals, and transmits the wavelength division multiplexed optical transmission signal through a single transmission/reception line. It may include a first WDM unit 513 to transmit.

인 광 송신신호와, 파장이

인 광 송신신호를 수신하여, 파장이

+

인 광 송신신호를 송수신 선로를 통해 광 수신모뎀(520)으로 송신할 수 있다.For example, the first WDM unit 513 has a wavelength

The optical transmission signal and the wavelength

Receiving the optical transmission signal, the wavelength

+

The optical transmission signal may be transmitted to the optical reception modem 520 through a transmission/reception line.

Meanwhile, the optical reception modem 520 according to another embodiment receives a wavelength division multiplexed optical transmission signal through a transmission/reception line, and divides the wavelength division multiplexed optical transmission signal into different wavelength values to receive a plurality of optical reception signals. The second WDM unit 521 may be generated.

+

인 광 송신신호를 수신하고, 수신한 광 송신신호를 서로 다른 파장값별로 분할하여 파장이 파장이

인 제1 광 수신신호와, 파장이

인 제2 광 수신신호로 분할할 수 있다.For example, the second WDM unit 521 has a wavelength division multiplexed wavelength.

+

Phosphorescent optical transmission signal is received, and the received optical transmission signal is divided into different wavelength values, so that the wavelength is

The first optical received signal and the wavelength

It can be divided into the second optical received signal.

In addition, the optical receiving modem 520 according to another embodiment is provided in a system corresponding to the optical receiving modem 520 or a system corresponding to the optical receiving modem 520, a plurality of data corresponding to a plurality of optical receiving signals It may include a plurality of data transmission unit (522, 523) to transmit to the calculator.

인 광을 수신하는 제1 데이터 전달부(522)로 전달하고, 분할된 제2 광 수신신호는 파장이

인 광을 수신하는 제2 데이터 전달부(523)로 전달할 수 있다.For example, the second WDM unit 521 has the wavelength of the divided first optical reception signal.

It transmits the phosphorus light to the first data transmission unit 522, and the divided second light reception signal has a wavelength.

It can be transferred to the second data transmission unit 523 that receives the phosphorescence.

According to one side, the communication system 500 according to another embodiment may further include an optical modem operation monitoring unit to determine whether or not normal operation of at least one of the optical transmission modem 510 and the optical reception modem 520 is performed. have.

The optical modem operation monitoring unit generates a modem diagnostic signal to be transmitted to a modem that does not perform normal operation among the optical transmission modem 510 and the optical reception modem 520 in response to the result of the normal operation determination, and the modem diagnostic signal corresponding to the modem Transmission, and at least one of the first WDM unit 513 and the second WDM unit 521 converts a line for transmitting and receiving a wavelength division multiplexed optical transmission signal into a spare line in response to whether a modem diagnostic signal is received. Can.

According to one side, the optical modem operation monitoring unit may determine whether the modem operates normally, including at least one of a Timer & Watch Dog Timer (WDT) and a Cycical Redundancy Check (CRC) circuit.

6 is a view for explaining an example of an optical modem operation monitoring unit of a communication system between optical modems according to another embodiment.

Referring to FIG. 6, the optical modem operation monitoring unit 420 determines whether the plurality of optical modems 610 are operating normally, generates a modem diagnostic signal in response to the determination result, and corresponds to the optical modem diagnostic signal. Can be transmitted to the modem.

For example, the first optical modem and the third optical modem may be optical transmission modems, and the second optical modem and the fourth optical modem may be optical reception modems. That is, the plurality of optical transmission modems and the plurality of optical reception modems may be connected to different optical modem operation monitoring units.

Further, the first to fourth optical modems may be connected to different optical modem operation monitoring units, respectively.

Specifically, the optical modem operation monitoring unit may monitor data transmitted/received between each of the first to fourth optical modems and an operator or a separate device corresponding to the first to fourth optical modems. It may be determined whether the first to fourth optical modems 410 operate normally.

After all, by using the present invention, it is possible to secure the spare line and immediately perform repair and repair even when the optical line is disconnected.

In addition, using the present invention, even in the event of a malfunction of the optical modem or disconnection of the optical line, the nuclear power plant can be operated without any additional maintenance or repair.

The device described above may be implemented with hardware components, software components, and/or combinations of hardware components and software components. For example, the devices and components described in the embodiments include, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors (micro signal processors), microcomputers, field programmable gate arrays (FPGAs). , A programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions, may be implemented using one or more general purpose computers or special purpose computers. The processing device may run an operating system (OS) and one or more software applications running on the operating system. In addition, the processing device may access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of understanding, a processing device may be described as one being used, but a person having ordinary skill in the art, the processing device may include a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that may include. For example, the processing device may include a plurality of processors or a processor and a controller. In addition, other processing configurations, such as parallel processors, are possible.

The software may include a computer program, code, instruction, or a combination of one or more of these, and configure the processing device to operate as desired, or process independently or collectively You can command the device. Software and/or data may be interpreted by a processing device or to provide instructions or data to a processing device, of any type of machine, component, physical device, virtual equipment, computer storage medium or device. , Or may be permanently or temporarily embodied in the transmitted signal wave.

The software may be distributed on networked computer systems, and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, or the like alone or in combination. The program instructions recorded on the medium may be specially designed and constructed for the embodiments or may be known and usable by those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs, DVDs, and magnetic media such as floptical disks. -Hardware devices specifically configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language code that can be executed by a computer using an interpreter, etc., as well as machine language codes produced by a compiler. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

200: communication system 210, 220: grid or calculator
230, 240: optical modem 231: signal generator
232: WDM unit 233: data transmission unit

Claims (13)

In a communication system for transmitting and receiving data during a calculation period provided in each of the plurality of systems or the plurality of systems with a plurality of optical modems provided in a plurality of systems of a nuclear power plant,
The plurality of optical modems,
A signal generator configured to receive data from any one of the plurality of systems or the calculator, and generate an optical transmission signal having a predetermined transmission wavelength value corresponding to the received data;
A WDM unit that transmits the optical transmission signal through a single transmission/reception line and receives an optical reception signal having a preset reception wavelength value through the transmission/reception line;
A data transmission unit for transmitting data corresponding to the optical reception signal to the one device; and
It is determined whether the plurality of optical modems are normally operated by using a watch dog timer (WDT) that counts the duration of abnormal conditions due to malfunction of the plurality of optical modems or disconnection of the transmission/reception line and generates a reset alarm signal. An optical modem operation monitoring unit that generates a modem diagnostic signal in response to the determination result and transmits the modem diagnostic signal to a corresponding WDM unit
Including,
The WDM unit,
In response to whether or not the modem diagnostic signal has been received, the optical transmission signal and the line through which the optical reception signal is transmitted are switched to a spare line,
The WDT,
A WDT counter for counting the duration of the abnormal state to derive a counter count value;
A reset alarm register in which a count reference value that is a reference for generating the reset alarm signal is preset, and
A comparator that compares the derived counter count value with the preset count reference value to generate the reset alarm signal when the derived counter count value exceeds the preset count reference value
Communication system between the optical modem comprising a. According to claim 1,
The plurality of lines,
Core Protection Calculator System (CPCS), Plant Data Acquisition System (PDAS), Plant Computer System (PCS) and Engineered Safety Features Actuation System (ESFAS) ) Containing at least one of
Communication system between optical modems. According to claim 1,
The plurality of optical modems, characterized in that the RS232 optical modem
Communication system between optical modems. According to claim 1,
Any one of the plurality of optical modems,
A first signal generating unit for generating a first optical transmission signal in response to data received from a system or an operator corresponding to any one of the optical modems, and transmitting the first optical transmission signal and optically transmitting the second optical transmission signal The first WDM unit receiving the received signal and the first data transmission unit transmitting data corresponding to the second optical transmission signal to a system or operator corresponding to the one optical modem.
Including,
Another optical modem among the plurality of optical modems,
A second signal generating unit which generates the second optical transmission signal in response to data input from a system or an operator corresponding to the other optical modem, and the first optical transmission signal and transmits the second optical transmission signal A second WDM unit for receiving a signal as an optical reception signal and a second data transmission unit for transmitting data corresponding to the received first optical transmission signal to a system or operator corresponding to the other optical modem
Communication system between the optical modem comprising a. According to claim 4,
The first optical transmission signal and the second optical transmission signal is characterized in that it has a different wavelength value
Communication system between optical modems. delete According to claim 1,
The optical modem operation monitoring unit,
Including a CRC (Cyclical Redundancy Check) circuit to determine whether the plurality of optical modems are operating normally
Communication system between optical modems. An optical transmission modem and an optical reception modem provided in a plurality of systems of a nuclear power plant transmit and receive data during a calculation period provided in each of the plurality of systems or each of the plurality of systems, and at least one of the optical transmission modem and the optical reception modem In the communication system including an optical modem operation monitoring unit for determining whether the normal operation of the modem,
The optical transmission modem,
A plurality of signal generation unit for receiving a plurality of data from a system or an operator corresponding to the optical transmission modem, and generating a plurality of optical transmission signals having different wavelength values corresponding to each of the received plurality of data and
A first WDM unit that performs wavelength division multiplexing (WDM) in response to the plurality of optical transmission signals and transmits the wavelength division multiplexed optical transmission signal through a single transmission/reception line.
Including,
The optical receiving modem,
A second WDM unit which receives the wavelength division multiplexed optical transmission signal and divides the wavelength division multiplexed optical transmission signal into different wavelength values to generate a plurality of optical reception signals;
A plurality of data transmission unit for transmitting the plurality of data corresponding to the plurality of optical reception signals to a system or operator corresponding to the optical reception modem
It includes,
The optical modem operation monitoring unit,
The watch dog timer (WDT) generating a reset alarm signal by counting the duration of an abnormal state due to malfunction of the at least one modem or disconnection of a transmission/reception line is determined to determine whether the at least one modem is operating normally and the Generating a modem diagnostic signal in response to the judgment result,
The WDT,
A WDT counter for counting the duration of the abnormal state to derive a counter count value;
A reset alarm register in which a count reference value, which is a reference for generating the reset alarm signal, is preset;
A comparator that compares the derived counter count value with the preset count reference value to generate the reset alarm signal when the derived counter count value exceeds the preset count reference value
Communication system between the optical modem comprising a. The method of claim 8,
The plurality of lines,
Core Protection Calculator System (CPCS) and Engineered Safety Features Actuation (ESFAS) with Core Protection Calculator (CPC) and Control Element Assembly Calculator (CEAC) System)
Communication system between optical modems. The method of claim 8,
At least one modem of the optical transmission modem and the optical reception modem,
Characterized in that it is at least one of a CPOIA (CEA Position Optical Isolation Assembly) modem and an ESFAS (Engineered Safety Features Actuation System) modem.
Communication system between optical modems. delete The method of claim 8,
The optical modem operation monitoring unit,
Including a CRC (Cyclical Redundancy Check) circuit to determine whether the at least one modem is operating normally
Communication system between optical modems. The method of claim 8,
The optical modem operation monitoring unit,
Transmitting the modem diagnostic signal to the corresponding at least one modem,
At least one of the first WDM unit and the second WDM unit,
In response to whether or not the modem diagnostic signal is received, a line for transmitting and receiving the wavelength division multiplexed optical transmission signal is switched to a spare line.
Communication system between optical modems.

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