CN114203007A - Rod position coding card fault simulation system and troubleshooting system - Google Patents
Rod position coding card fault simulation system and troubleshooting system Download PDFInfo
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- CN114203007A CN114203007A CN202111519750.6A CN202111519750A CN114203007A CN 114203007 A CN114203007 A CN 114203007A CN 202111519750 A CN202111519750 A CN 202111519750A CN 114203007 A CN114203007 A CN 114203007A
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- 238000004088 simulation Methods 0.000 title claims abstract description 96
- 238000013024 troubleshooting Methods 0.000 title claims abstract description 17
- 230000005855 radiation Effects 0.000 claims description 46
- 239000003990 capacitor Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to the technical field of instrument control maintenance, in particular to a rod position coding card fault simulation system and a fault troubleshooting system. A rod position coding card fault simulation system comprises coding card fault simulation units which are arranged in one-to-one correspondence with actual rod position coding cards, first data collectors which are connected with the coding card fault simulation units in one-to-one correspondence, and first data display units which are connected with all the first data collectors; the code card fault simulation unit comprises a code card simulation piece, a first state control piece and a second state control piece, wherein the first state control piece is connected with the code card simulation piece in series and used for controlling the code card simulation piece to enter an open circuit state, and the second state control piece is connected with the code card simulation piece in parallel and used for controlling the code card simulation piece to enter a short circuit state. The rod position coding card fault simulation system can simulate the fault situation of the rod position coding card, and is convenient for workers to determine the relation between the working state of the rod position coding card and the state data of the rod position coding card.
Description
Technical Field
The invention relates to the technical field of instrument control maintenance, in particular to a rod position coding card fault simulation system and a fault troubleshooting system.
Background
The AP1000 is one of the most advanced third-generation nuclear power technologies in the world, and a digital technology is adopted in an instrument control system. The digital rod position indicating system is one of the important third-generation nuclear power digital instrument control systems, and has the main function of monitoring and indicating the position of a control rod in a reactor core. The digital rod position indicating system detects the position of a control rod in a reactor core through a non-contact electromagnetic induction technology, and discrete rod position information is converted into a Gray code data format through a rod position coding card to carry out data transmission. In order to reduce the number of used penetration pieces, the rod position coding cards of the AP1000 nuclear power technology are installed inside a containment building, 69 rod position coding cards are installed in 5 layers in one cabinet, and 138 coding cards are installed in two cabinets of one unit. Especially under the operating condition of a power plant, if the rod position coding card is subjected to fault troubleshooting, the working time is long, the working efficiency is low, the installation position of the rod position coding card is in an irradiation area, and long-time operation can bring great hidden dangers to personnel.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a rod position coding card fault simulation system and a fault troubleshooting system, which can simulate various faults of a rod position coding card, so that a worker can conveniently and quickly find the rod position coding card with the fault, the overhauling efficiency of the rod position coding card is improved, and the radiation risk of the worker is reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: a rod position coding card fault simulation system comprises coding card fault simulation units which are arranged in one-to-one correspondence with actual rod position coding cards, first data collectors which are connected with the coding card fault simulation units in one-to-one correspondence, and first data display units which are connected with all the first data collectors;
the code card fault simulation unit comprises a code card simulation piece, a first state control piece and a second state control piece, wherein the first state control piece is connected with the code card simulation piece in series and used for controlling the code card simulation piece to enter an open circuit state, and the second state control piece is connected with the code card simulation piece in parallel and used for controlling the code card simulation piece to enter a short circuit state;
the data acquisition unit I is used for acquiring state data of the code card simulation piece;
and the data display unit is used for displaying the state data of all the coded card simulation pieces.
Preferably, the coded card simulation piece is one of a resistor, a capacitor or a diode.
Preferably, the first state control member and the second state control member are both control switches.
Preferably, each of the code card fault simulation units is provided with a switch controller connected with the first state control element and the second state control element, and all the switch controllers are installed on the same switch control board.
A fault troubleshooting system for a rod position coding card comprises a rod position coding card fault simulation system, a second data acquisition unit and a second data display unit, wherein the second data acquisition unit is connected with the rod position coding card in a one-to-one corresponding mode;
the second data collector is used for collecting the state data of the rod position coding card;
the second data display unit is used for displaying the state data of the rod position coding card;
and controlling the encoding card fault simulation unit to enable the state data of the encoding card simulation piece displayed by the first data display unit to be the same as the state data of the rod position encoding card displayed by the second data display unit so as to determine the fault position and the fault reason of the rod position encoding card.
Preferably, the second data acquisition unit comprises a first board body, a first circuit element arranged on the first board body, a second circuit element arranged on the second board body and a radiation-proof cover; after the second board body is connected with the first board body, the first circuit element is communicated with the second circuit element to form a working circuit of a second data acquisition unit; the radiation shield is covered on the second board body and the second circuit element and is connected with the first board body.
Preferably, the radiation shield includes a shield cavity for accommodating the second board and the second circuit element, and a distance between the shield cavity and the outer surface of the radiation shield is 2.5 to 3.5 cm.
Preferably, the second plate body is provided with an insertion rod, and the first plate body is provided with an insertion hole which is matched and connected with the insertion rod.
Preferably, the length of the insertion rod is at least 2 cm.
Preferably, the radiation shield comprises a base and a top cover; the base is fixedly connected with the first plate body and provided with a connecting groove, and the top cover is provided with a clamping block which is connected with the connecting groove in a matched manner; the fixture block is provided with a connecting hole, and the base is provided with a butt joint hole which is connected with the connecting hole in a matched mode through a fastener.
Advantageous effects
Firstly, the rod position coding card fault simulation system can simulate the fault situation of a rod position coding card, and is convenient for workers to determine the relation between the working state of the rod position coding card and the state data of the rod position coding card;
secondly, the rod position coding card fault troubleshooting system can simulate the fault situation of the rod position coding card through the rod position coding card fault simulation system, so that a worker can conveniently and quickly find the rod position coding card with the fault, the overhauling efficiency of the rod position coding card is improved, and the radiation risk of the worker is reduced;
thirdly, the second data collector has good radiation resistance, so that the state data of the rod position coding card can be collected safely and stably for a long time.
Drawings
FIG. 1 is a circuit diagram of a first embodiment of a fault simulation unit for a code card according to the present invention;
FIG. 2 is a circuit diagram of a second embodiment of the encoder card fault simulation unit of the present invention;
FIG. 3 is a circuit diagram of a third embodiment of the code card fault simulation unit according to the present invention;
FIG. 4 is a cross-sectional view of a second data collector of the present invention;
FIG. 5 is a schematic structural view of a radiation shield of the present invention;
FIG. 6 is a schematic structural view of a base of the radiation shield of the present invention;
fig. 7 is a schematic structural view of a top cover of the radiation shield of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows: as shown in fig. 1 to 3, a rod position coded card fault simulation system includes coded card fault simulation units arranged in one-to-one correspondence with actual rod position coded cards, first data collectors connected in one-to-one correspondence with the coded card fault simulation units, and first data display units connected to all the first data collectors.
The code card fault simulation unit comprises a code card simulation piece 1, a first state control piece 2 which is connected with the code card simulation piece 1 in series and used for controlling the code card simulation piece 1 to enter an open circuit state, and a second state control piece 3 which is connected with the code card simulation piece 1 in parallel and used for controlling the code card simulation piece 1 to enter a short circuit state. Firstly, the code card simulation part 1 which is suitable for the actual rod position code card is selected according to the performance parameters of the code card, and the code card simulation part 1 can be a resistor or a capacitor or a diode. And then connecting the first state control element 2 and the second state control element 3 with the coded card simulation element 1, wherein the first state control element 2 can be a normally closed control switch, and the second state control element 3 can be a normally open control switch. The open state of the first state control element 2 can simulate the open circuit of the coded card simulator 1 (corresponding to the rod position coded card), and the close state of the second state control element 3 can simulate the short circuit of the coded card simulator 1 (corresponding to the rod position coded card). Each coding card fault simulation unit is provided with a switch controller connected with the first state control element 2 and the second state control element 3, all the switch controllers are installed on the same switch control panel, and the first state control element 2 and the second state control element 3 can be conveniently opened and closed through the arrangement.
The first data collector is used for collecting state data of the code card simulation piece 1, and the state data can be a current signal value, a voltage signal value and a temperature signal value corresponding to the code card simulation piece 1.
And the data display unit I is used for displaying the state data of all the coded card simulation pieces 1. The first data display unit can comprise a display screen, and model parameters, current signal values, voltage signal values and temperature signal values of the coded card simulation piece 1 can be displayed on the display screen. By means of the model parameters, the operator can determine which coded card simulation 1 is the status data. On the premise that the state (normal state, short circuit state or open circuit state) and the state data (current signal value, voltage signal value and temperature signal value) of the code card simulation piece 1 are known, a worker can analyze the corresponding relation between the current signal value, the voltage signal value and the temperature signal value and the state of the code card simulation piece 1, and therefore the worker can smoothly deduce the state of the code card simulation piece 1 on the premise that only the state data are known.
Example two: a rod position coding card fault troubleshooting system comprises a rod position coding card fault simulation system, second data collectors connected with rod position coding cards in a one-to-one correspondence mode, and second data display units connected with all the second data collectors. And the second data collector is used for collecting the state data of the rod position coding card, and the state data can be a current signal value, a voltage signal value and a temperature signal value corresponding to the rod position coding card. The second data display unit is used for displaying the state data of the rod position coding card, and can comprise a display screen, and the model parameters, the current signal value, the voltage signal value and the temperature signal value of the rod position coding card can be displayed on the display screen.
As shown in fig. 1 to 3, the rod position coded card fault simulation system includes coded card fault simulation units arranged in one-to-one correspondence with actual rod position coded cards, first data collectors connected in one-to-one correspondence with the coded card fault simulation units, and first data display units connected to all the first data collectors. The code card fault simulation unit comprises a code card simulation piece 1, a first state control piece 2 which is connected with the code card simulation piece 1 in series and used for controlling the code card simulation piece 1 to enter an open circuit state, and a second state control piece 3 which is connected with the code card simulation piece 1 in parallel and used for controlling the code card simulation piece 1 to enter a short circuit state. The first data collector is used for collecting state data of the code card simulation piece 1, and the state data can be a current signal value, a voltage signal value and a temperature signal value corresponding to the code card simulation piece 1. And the data display unit I is used for displaying the state data of all the coded card simulation pieces 1. The first data display unit can comprise a display screen, and model parameters, current signal values, voltage signal values and temperature signal values of the coded card simulation piece 1 can be displayed on the display screen.
And controlling the encoding card fault simulation unit to enable the state data of the encoding card simulation piece 1 displayed by the first data display unit to be the same as the state data of the rod position encoding card displayed by the second data display unit so as to determine the fault position and the fault reason of the rod position encoding card.
The rod position coding card troubleshooting method of the embodiment specifically comprises the following steps: l1, collecting the status data of the coded card by the second data collector, and displaying the status data of the coded card by the second data display unit. And L2, the staff refers to the status data on the second data display unit, and controls the first status control element 2 and the second status control element 3 in the coded card fault simulation unit to open and close so that the status data of the coded card simulation element 1 displayed by the first data display unit is approximately the same as the status data of the rod coded card displayed by the second data display unit. L3, the fault position and fault reason of the corresponding rod position code card are determined by the open-close state of the first state control element 2 and the second state control element 3 in the code card fault simulation unit.
The rod position coding card fault troubleshooting system can simulate the fault situation of the rod position coding card through the rod position coding card fault simulation system, so that a worker can conveniently and quickly find the rod position coding card with the fault, the overhauling efficiency of the rod position coding card is improved, and the risk of radiation to the worker is reduced.
Furthermore, as the second data acquisition device works in the radiation area, after a period of time, the second data acquisition device is damaged (radiation reason), so that the second data acquisition device cannot normally and accurately acquire the state data of the rod position coding card. Therefore, the invention improves the second data collector. Specifically, as shown in fig. 4, the second data acquisition unit includes a first board 4-1, a first circuit element 4-2 disposed on the first board 4-1, a second board 4-3, a second circuit element 4-4 disposed on the second board 4-3, and a radiation shield 4-5. And after the second board body 4-3 is connected with the first board body 4-1, the first circuit element 4-2 is communicated with the second circuit element 4-4 to form a working circuit of a second data acquisition unit. The radiation shield 4-5 is covered on the second board 4-3 and the second circuit element 4-4 and connected with the first board 4-1.
In this embodiment, the circuit elements forming the second data collector are divided into a first radiation-resistant circuit element 4-2 and a second radiation-resistant circuit element 4-4, the first circuit element 4-2 does not affect the normal use of the second data collector even if being in a high radiation environment for a long time, and the second circuit element 4-4 is in a radiation environment for a period of time and then is abnormal, so that the second data collector cannot be used normally. Therefore, the radiation-proof shield 4-5 is arranged on the second circuit element 4-4, and the radiation-proof shield 4-5 is used for improving the radiation-proof performance of the second circuit element 4-4, so that the second data collector can be stably used for a long time.
However, if the second circuit component 4-4 is directly disposed on the first board 4-1, the radiation protection effect of the radiation shield 4-5 on the second circuit component 4-4 is not obvious (because the connection surface of the radiation shield 4-5 and the first board 4-1 is substantially at the same level as the disposition surface of the second circuit component 4-4), unless the radiation shield 4-5 is made very thick, the cost of the radiation shield 4-5 is high on one hand, and the disposition of the first circuit component 4-2 is inconvenient on the other hand (in the case that the size of the first board 4-1 is not changed). Therefore, the second circuit element 4-4 is arranged on the second board body 4-3, and the second board body 4-3 and the first board body 4-1 are staggered in the horizontal direction, so that the connecting surface of the radiation-proof cover 4-5 and the first board body 4-1 is staggered with the arrangement surface of the second circuit element 4-4, and the radiation-proof cover 4-5 can play an effective radiation-proof effect on the second circuit element 4-4.
Further, the radiation shield 4-5 of the present invention is made of tungsten. Tungsten, lead and other materials have a radiation shielding effect, but on the premise of the same thickness (namely the same volume of the data collector), the radiation protection performance of tungsten is obviously higher than that of other materials, so that the radiation protection cover disclosed by the invention is made of tungsten 4-5. In addition, the radiation shield 4-5 includes a shield cavity for accommodating the second board 4-3 and the second circuit element 4-4, and a distance between the shield cavity and the outer surface of the radiation shield 4-5 is 2.5 to 3.5 cm, and specifically may be 3 cm. On the premise of comprehensively considering the factors of the second volume of the data acquisition unit, the radiation protection effect, the manufacturing cost and the like, the 4-5 cost performance of the radiation protection shield with the thickness of 3 cm is optimal.
Furthermore, the second plate body 4-3 is provided with an insertion rod, and the first plate body 4-1 is provided with an insertion hole which is connected with the insertion rod in a matching manner. When the second plate body 4-3 is connected with the first plate body 4-1, only the insertion rod of the second plate body 4-3 is inserted into the insertion hole of the first plate body 4-1, and the assembly is very simple and convenient. When the second circuit element 4-4 is damaged (i.e. when the second data collector is damaged), the user only needs to remove the original second board body 4-3 from the first board body 4-1, and then replace the new second board body 4-3 and the second circuit element 4-4, without replacing the whole second data collector, thereby improving the resource utilization rate of the second data collector. In addition, the length of the plug rod is at least 2 cm, so that the second board body 4-3 is inserted into the shield cavity of the radiation shield 4-5 (i.e. the connection surface of the radiation shield 4-5 and the first board body 4-1 is far enough from the setting surface of the second circuit element 4-4), and thus the radiation shield 4-5 can generate a very good radiation protection effect on the second circuit element 4-4.
Further, as shown in fig. 5 to 7, the radiation shield 4-5 includes a base 4-51 and a top cover 4-52. The base 4-51 is fixedly connected with the first board 4-1 and is provided with a connecting groove 4-51 a. The top cover 4-52 is provided with a fixture block 4-52a which is matched and connected with the connecting groove 4-51 a. The fixture block 4-52a is provided with a connecting hole 4-52b, and the base 4-51 is provided with a butt joint hole 4-51b which is matched and connected with the connecting hole 4-52b through a fastener. The fastener may be a fastening screw.
Firstly, the bottom of the base 4-51 is welded and fixed with the first plate 4-1, the top of the base 4-51 is provided with a circle of connecting groove 4-51a, the bottom of the top cover 4-52 is provided with a circle of fixture block 4-52a, and the fixture block 4-52a can block radiation from entering the cover cavity from the connecting gap between the base 4-51 and the top cover 4-52 after being inserted into the connecting groove 4-51a, so that the radiation protection performance of the radiation protection cover 4-5 cannot be weakened. Secondly, through the arrangement of the base 4-51 and the top cover 4-52, the radiation shield 4-5 can be detached from the first board body 4-1, and further, the maintenance and replacement of the second board body 4-3 and the second circuit element 4-4 can be realized. Finally, when the top cover 4-52 is connected with the base 4-51, only the fixture block 4-52a of the top cover 4-52 is required to be inserted into the connecting groove 4-51a of the base 4-51, and then the two are connected and fixed by a fastening screw (reverse operation during disassembly), so that the disassembly and the assembly are very convenient.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (10)
1. The rod position coding card fault simulation system is characterized in that: the device comprises coding card fault simulation units which are arranged in one-to-one correspondence with actual rod position coding cards, first data collectors which are connected with the coding card fault simulation units in one-to-one correspondence, and first data display units which are connected with all the first data collectors;
the code card fault simulation unit comprises a code card simulation piece (1), a first state control piece (2) which is connected with the code card simulation piece (1) in series and used for controlling the code card simulation piece (1) to enter an open circuit state, and a second state control piece (3) which is connected with the code card simulation piece (1) in parallel and used for controlling the code card simulation piece (1) to enter a short circuit state;
the data acquisition unit I is used for acquiring state data of the code card simulation piece (1);
and the data display unit is used for displaying the state data of all the coded card simulation pieces (1).
2. The rod position coded card fault simulation system of claim 1, wherein: the coded card simulation piece (1) is one of a resistor, a capacitor or a diode.
3. The rod position coded card fault simulation system of claim 1, wherein: the first state control element (2) and the second state control element (3) are both control switches.
4. The rod position coded card fault simulation system of claim 3, wherein: and each coding card fault simulation unit is provided with a switch controller connected with the first state control element (2) and the second state control element (3), and all the switch controllers are arranged on the same switch control board.
5. A fault troubleshooting system for a rod position code card, comprising the rod position code card fault simulation system of any one of claims 1 to 3, characterized in that: the bar code card reader also comprises a second data acquisition unit and a second data display unit, wherein the second data acquisition unit is connected with the bar code cards in a one-to-one corresponding manner, and the second data display unit is connected with all the second data acquisition units;
the second data collector is used for collecting the state data of the rod position coding card;
the second data display unit is used for displaying the state data of the rod position coding card;
and controlling the encoding card fault simulation unit to enable the state data of the encoding card simulation piece (1) displayed by the first data display unit to be the same as the state data of the rod position encoding card displayed by the second data display unit so as to determine the fault position and the fault reason of the rod position encoding card.
6. The rod position coded card troubleshooting system of claim 5 wherein: the second data acquisition unit comprises a first board body (4-1), a first circuit element (4-2) arranged on the first board body (4-1), a second board body (4-3), a second circuit element (4-4) arranged on the second board body (4-3), and a radiation shield (4-5); after the second board body (4-3) is connected with the first board body (4-1), the first circuit element (4-2) is communicated with the second circuit element (4-4) to form a working circuit of a second data acquisition unit; the radiation protection cover (4-5) covers the second board body (4-3) and the second circuit element (4-4) and is connected with the first board body (4-1).
7. The rod position coded card troubleshooting system of claim 6 wherein: the radiation shield (4-5) comprises a shield cavity for accommodating the second board body (4-3) and the second circuit element (4-4), and the distance between the shield cavity and the outer surface of the radiation shield (4-5) is 2.5-3.5 cm.
8. The rod position coded card troubleshooting system of claim 6 wherein: the second plate body (4-3) is provided with an inserting rod, and the first plate body (4-1) is provided with an inserting hole which is matched and connected with the inserting rod.
9. The rod position coded card troubleshooting system of claim 8 wherein: the length of the inserting rod is at least 2 cm.
10. The rod position coded card troubleshooting system of claim 6 wherein: the radiation shield (4-5) comprises a base (4-51) and a top cover (4-52); the base (4-51) is fixedly connected with the first plate body (4-1) and is provided with a connecting groove (4-51 a), and the top cover (4-52) is provided with a clamping block (4-52 a) which is matched and connected with the connecting groove (4-51 a); the fixture block (4-52 a) is provided with a connecting hole (4-52 b), and the base (4-51) is provided with a butt joint hole (4-51 b) which is matched and connected with the connecting hole (4-52 b) through a fastener.
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| CN1468503A (en) * | 2000-10-06 | 2004-01-14 | ˹�п�ӡˢ��˾ | Methods of manufacturing a printed circuit board shielded against interfering radiation |
| CN102262906A (en) * | 2011-08-18 | 2011-11-30 | 国核自仪系统工程有限公司 | Rod position detector for pressurized water reactor nuclear power station |
| CN102280150A (en) * | 2011-08-18 | 2011-12-14 | 国核自仪系统工程有限公司 | Rod position detecting system of nuclear power plant and method for testing free rod-drop time thereof |
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| KR101668861B1 (en) * | 2015-11-30 | 2016-10-25 | 주식회사 한빛파워 | Virtual training system of nuclear power plant |
| CN107731328A (en) * | 2017-08-31 | 2018-02-23 | 中国核电工程有限公司 | A kind of Gray code double precision control rod location detection methods |
| KR101972269B1 (en) * | 2018-08-21 | 2019-04-24 | 한전케이피에스 주식회사 | Simulator for nurturing maintenace personnel at nuclear power plants |
| KR102136956B1 (en) * | 2019-12-26 | 2020-07-22 | 한전케이피에스 주식회사 | Input output hot-swappable wiring interface providing method and apparatus and system therefor |
| CN212116087U (en) * | 2020-05-27 | 2020-12-08 | 深圳市科比特航空科技有限公司 | Electromagnetic shielding cover and electronic product |
| CN112466487A (en) * | 2020-11-12 | 2021-03-09 | 上海昱章电气成套设备有限公司 | Rod position signal simulation device of nuclear power control rod and control method thereof |
| CN112599264A (en) * | 2020-12-05 | 2021-04-02 | 核电运行研究(上海)有限公司 | Method for accurately positioning position of control rod |
| CN214375006U (en) * | 2021-01-07 | 2021-10-08 | 山东核电有限公司 | Testing device for rod position detector of nuclear power station |
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