PLM board card detection system and method

Abstract

The invention belongs to the technical field of nuclear power, and particularly relates to a PLM board card detection system and method.The system comprises a data comprehensive processing unit and a data measuring unit, and data interaction is conducted between the data comprehensive processing unit and the data measuring unit; the data measurement unit is used for receiving the instruction sent by the data comprehensive processing unit, performing measurement according to the instruction to obtain measurement data, and sending the measurement data to the data comprehensive processing unit; and the data comprehensive processing unit is used for receiving a configuration instruction of a user, processing and analyzing the measurement data sent by the data measurement unit to generate analysis data, and displaying the measurement data and the analysis data. Various performance indexes of the PLM board card can be effectively tested, maintenance and replacement of the board card can be guided according to a test result, and it is ensured that field equipment is in a normal working state.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power, and in particular relates to a detection system and method for a PLM board. Background Art

[0002] The PLM (Priority Logic Module) board has been in service in power plant systems for a long time. It is mainly used in the Tricon platform of the reactor protection system and is the direct export of the action command of the nuclear power dedicated safety facility (ESFAC). If the PLM board fails, it will have direct consequences downstream, causing the equipment to refuse to operate or malfunction, directly affecting nuclear safety. Therefore, it is very important to verify whether the function of the PLM board is normal.

[0003] Currently, nuclear power plants are mainly tested through the protection system T3 test. Commands are sent to the PLM board through an automated program, and signal recognition is performed based on the feedback commands from the PLM to determine whether the board functions normally.

[0004] According to the functional description of the PLM board, the board has 4 types of 8-way signal inputs, and the module introduces the test mode / working mode option, with a total of 10 signal inputs, so there are 2^10 possible triggering methods. Since the module must function normally at all times on site, the experimental program did not perform full functional tests on the on-site PLM board. At the same time, since the downstream of the PLM board is a field device of a dedicated safety facility, if the PLM board fails, it will have direct consequences downstream, so the life estimation of the PLM board is crucial, and performance testing and evaluation need to be introduced. Summary of the invention

[0005] The purpose of the present invention is to provide a PLM board detection system and method, which can effectively test various performance indicators of the PLM board, guide the repair and replacement of the board according to the test results, and ensure that the on-site equipment is in normal working condition.

[0006] The technical solution to achieve the purpose of the present invention is:

[0007] A detection system for a PLM board, the system comprising: a data integration processing unit and a data measurement unit, wherein data interaction is performed between the data integration processing unit and the data measurement unit;

[0008] The data measurement unit is used to receive the instruction sent by the data integration processing unit, perform measurement according to the instruction, obtain measurement data, and send the measurement data to the data integration processing unit;

[0009] The data comprehensive processing unit is used to receive the configuration instructions of the user, process and analyze the measurement data sent by the data measurement unit to generate analysis data, and display the measurement data and analysis data.

[0010] The data measurement unit includes a measurement control module and a test function module. The measurement control module is used to receive instructions sent by the data integration processing unit, generate control signals according to the instructions sent by the data integration processing unit, and control the corresponding test function module through the control signals; the test function module is used to receive control signals sent by the measurement control module, perform corresponding functional tests according to the control signals, generate measurement data, and send the measurement data to the measurement control module. The measurement control module sends the received measurement data to the data integration processing unit.

[0011] The test function module includes: a number recognition module, an impedance measurement module, a DAC output module, an ADC acquisition module, a switch quantity acquisition module, a signal switching module, a response time measurement module, and a leakage current detection module.

[0012] The data comprehensive processing unit includes a test configuration module, a data analysis module, a manual / automatic test module, and a data display module;

[0013] A test configuration module, used to receive configuration instructions from the user and send the instructions to the measurement control module of the data measurement unit;

[0014] A data analysis module, used for receiving measurement data sent by the measurement control module of the data measurement unit, analyzing the received measurement data, generating analysis data, and comprehensively processing and analyzing the real-time or historical measurement data;

[0015] Manual / automatic test module, used to configure the use of manual mode or automatic mode;

[0016] The data display module is used to receive the measurement data sent by the test function module of the data measurement unit and the analysis data sent by the data analysis module, and display the received measurement data and analysis data.

[0017] A method for detecting a PLM board, the method comprising:

[0018] Step (1) input the information of the board under test;

[0019] Step (2) confirming the number of boards to be tested;

[0020] Step (3) test mode configuration;

[0021] Step (4) testing the board under test;

[0022] Step (5) displaying and storing the test results;

[0023] Step (6) test result analysis;

[0024] Step (7) Display and store the analysis results.

[0025] The step (4) comprises:

[0026] Step (4.1) uses the automatic test mode to perform board test detection: loop resistance test, leakage current test, input and output test, response time test;

[0027] Step (4.2) uses manual test mode to perform board logic function test.

[0028] The loop resistance test is specifically as follows: by detecting that a board is inserted into a port, a test program is started, a loop resistance test is performed through an impedance measurement module, and loop resistance data is generated; and the loop resistance data is sent to a data analysis module of a data comprehensive processing unit through a measurement control module.

[0029] The leakage current detection is specifically as follows: a high-voltage power supply signal is output between the signal port and the external housing through the DAC output module, and a resistor with a relatively large resistance is connected in series in the loop. The resistance between the acquisition port and the housing is divided by the ADC acquisition module to generate acquisition voltage data. According to the principle of equal current in the same loop, the acquisition voltage data is measured and sent to the data analysis module of the data comprehensive processing unit through the measurement control module to calculate the leakage current.

[0030] The input and output test is specifically as follows: controlling the DAC output module to output the corresponding test signal to the PLM board under test, and controlling the ADC acquisition module to collect the output voltage of the PLM board under test, generating output voltage data, and sending the output voltage data to the data analysis module of the data comprehensive processing unit via the measurement control module.

[0031] The response time test includes:

[0032] Step (a) The measurement control module receives a command sent by the data integration processing unit, and starts to control the DAC output module to output voltage signals to a group of input ports of the PLM board to be tested. At the same time, the DAC output module outputs another group of voltage signals to the output circuit of the PLM board to provide power. The ADC acquisition port starts to collect the output port signal of the board to be tested in real time, and the measurement control module starts timing at this time;

[0033] Step (b) The PLM board to be tested collects data through its own collection port, processes the collected signal, and outputs it to the output port of the PLM board according to the actual situation after processing. The signal is a voltage signal;

[0034] Step (c) After the measurement control module collects the voltage signal output by the PLM board to be tested, it sends the collected result to the data comprehensive processing unit and stops timing at the same time;

[0035] Step (d) subtracts the time at which the timing in step (c) is stopped from the time at which the timing in step (a) is started, to obtain the response time of the corresponding logic circuit.

[0036] The beneficial technical effects of the present invention are:

[0037] 1. A PLM board detection system and method of the present invention provides all the functions required for PLM card measurement. At the same time, each functional module is independent, which provides a basis for the implementation of subsequent manual / automatic test solutions, and additionally provides a number recognition function, further improves the test logic, and reduces the operation of manual data entry. Compared with the original test method of PLM boards, the present invention provides a unified test platform, which greatly improves the convenience of testing.

[0038] 2. The PLM board detection system and method of the present invention provide manual and automatic test solutions to meet different test requirements. In the automatic test mode, full-function performance tests of multiple boards can be performed at one time, and the test results can be recorded. When the user needs to perform one of the tests, the manual test mode can also be entered. Compared with the original test method, the test efficiency is greatly improved.

[0039] 3. A PLM board detection system and method of the present invention supports simultaneous testing of multiple PLM3900N boards in automatic test mode, and performs rapid testing according to a preset test process; in automatic test mode, it supports test item configuration function. Except for necessary measurement test sequences such as impedance measurement, which cannot be adjusted, the items and test sequences of other test items can be flexibly configured according to user needs.

[0040] 4. Compared with the original raw data analysis method based on paper data, the detection system and method of a PLM board card of the present invention can provide in-depth analysis of data. According to the measurement results, it is convenient to digitally model the card parts, thereby realizing dynamic tracking, analysis and recording of the card parts status, and further deriving preventive maintenance measures, etc., thereby improving maintenance efficiency and maintenance accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A block diagram of a detection system of a PLM board provided by the present invention;

[0042] Figure 2 A flow chart of a detection method for a PLM board provided by the present invention;

[0043] Figure 3 A flow chart of automatic board testing in a PLM board detection method provided by the present invention;

[0044] Figure 4The present invention provides a flow chart of response time test in a detection method of a PLM board. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0046] like Figure 1 As shown, a PLM board detection system provided by the present invention includes a data integration processing unit and a data measurement unit. The data integration processing unit and the data measurement unit exchange data through communication.

[0047] The data measurement unit is mainly used to receive instructions sent by the data comprehensive processing unit, control each test function module to perform measurement according to the instructions, obtain measurement data, and send the measurement data to the data comprehensive processing unit. The data measurement unit mainly includes a measurement control module and a test function module. The test function module includes a number recognition module, an impedance measurement module, a DAC output module, an ADC acquisition module, a switch quantity acquisition module, a signal switching module, a response time measurement module, a leakage current detection module, etc.

[0048] The measurement control module is used to receive instructions sent by the data integration processing unit, generate control signals according to the instructions sent by the data integration processing unit, and control the corresponding test function modules through the control signals.

[0049] The test function module is used to receive the control signal sent by the measurement control module, perform corresponding functional tests according to the control signal, generate measurement data, and send the measurement data to the measurement control module; the measurement control module sends the received measurement data to the data analysis module of the data comprehensive processing unit.

[0050] The measurement data includes the real-time measurement data of the test function module during the measurement process and the result measurement data after the measurement is completed.

[0051] The number recognition module is used to automatically read the number of the connected PLM board.

[0052] The impedance measurement module is used to measure the loop resistance of the PLM board. The timing for measuring the loop circuit is before performing all tests.

[0053] The DAC output module is used to output the required voltage to the PLM board. The input voltage requirement of the PLM board is 0~30V.

[0054] The ADC acquisition module is used to collect the output voltage of the PLM board, with a voltage range of 0 to 30V.

[0055] The switch quantity acquisition module is used to collect the output switch quantity of the PLM board.

[0056] The signal switching module is used to switch the test signal connected to the PLM board.

[0057] The response time measurement module is used to measure the response time of the PLM board.

[0058] The leakage current detection module is used to detect the leakage current connected to the PLM board.

[0059] The data comprehensive processing unit is mainly used for comprehensive processing and analysis of real-time or historical measurement data to generate analysis data, receive user configuration instructions, perform manual / automatic test control, receive measurement data from the data measurement unit during the measurement process and at the end of the measurement, and display the measurement data and analysis data.

[0060] The data comprehensive processing unit mainly includes test configuration module, data analysis module, manual / automatic test module, data display module, etc.

[0061] The test configuration module is used to receive the configuration instructions from the user and send the instructions to the measurement control module of the data measurement unit.

[0062] The data analysis module is used to receive the measurement data sent by the measurement control module of the data measurement unit, analyze the received measurement data, generate analysis data, and comprehensively process and analyze the real-time or historical measurement data. The measurement data sent by the measurement control module of the data measurement unit includes the real-time measurement data of the measurement process of the test function module and the result measurement data after the measurement is completed.

[0063] Manual / automatic test module, used to configure the use of manual mode or automatic mode.

[0064] The data display module is used to receive the measurement data sent by the test function module of the data measurement unit and the analysis data sent by the data analysis module, and display the received measurement data and analysis data. The measurement data sent by the measurement control module of the data measurement unit includes the real-time measurement data of the measurement process and the result measurement data after the measurement.

[0065] like Figure 2 As shown, a PLM board detection method provided by the present invention specifically includes the following steps:

[0066] Step (1) Input the information of the board under test:

[0067] The board number is obtained through the number recognition module and sent to the test configuration module of the data integrated processing unit through the measurement control module. After the user confirms the board number, it is recorded and stored;

[0068] Step (2) confirming the number of boards to be tested;

[0069] Confirm the number of boards under test through the test configuration module

[0070] Step (3) Test mode configuration:

[0071] Determine whether to use manual mode or automatic mode for board detection through the manual / automatic test module, and configure test items through the test configuration module;

[0072] Step (4) Testing of the board under test

[0073] Step (4.1) uses the automatic test mode to perform board test detection, such as Figure 3 As shown, specifically including:

[0074] Step (4.1.1) Loop resistance test: by detecting that the board is inserted into the port, the test program is started, the loop resistance test is performed through the impedance measurement module, and the loop resistance data is generated (subsequent tests must first control the signal switching circuit to switch to the corresponding test port, which will not be repeated); the loop resistance data is sent to the data analysis module of the data comprehensive processing unit through the measurement control module

[0075] Step (4.1.2) leakage current detection: output a high voltage power signal between the signal port and the external housing through the DAC output module, and at the same time connect a resistor with a large resistance in series in the loop, and divide the voltage between the acquisition port and the housing through the ADC acquisition module to generate acquisition voltage data. According to the principle of equal current in the same loop, the acquisition voltage data is measured and sent to the data analysis module of the data comprehensive processing unit through the measurement control module to calculate the leakage current;

[0076] Step (4.1.3) Input and output test: control the DAC output module to output the corresponding test signal to the PLM board under test, and control the ADC acquisition module to collect the output voltage of the PLM board under test, generate output voltage data, and send the output voltage data to the data analysis module of the data comprehensive processing unit through the measurement control module;

[0077] Step (4.1.4) response time test, such as Figure 4 As shown, specifically including:

[0078] Step (a) The measurement control module receives a command sent by the data integration processing unit, and starts to control the DAC output module to output signals to a group of input ports of the PLM board to be tested. At the same time, the DAC output module outputs another group of voltage signals to the output circuit of the PLM board to provide power. The ADC acquisition port starts to collect the output port signal of the board to be tested in real time, and the measurement control module starts timing at this time;

[0079] Step (b) The PLM board to be tested collects data through its own collection port, processes the collected signal, and outputs it to the output port of the PLM board according to the actual situation after processing. The signal is a voltage signal.

[0080] Step (c) After the measurement control module collects the voltage signal output by the PLM board to be tested, it sends the collected result to the data comprehensive processing unit and stops timing at the same time;

[0081] Step (d) subtracts the time when the timing of step (c) stops from the time when the timing of step (a) starts to obtain the response time of the corresponding logic circuit. A PLM board has a total of 8 groups of input signals from the field, and the device can measure the response time of 8 groups of logic circuits.

[0082] Step (4.2) uses manual test mode to test the logic function of the board

[0083] If it is a manual single-step test, it can be set in the data integrated processing unit, and manual input can be used to perform single-step action test on the PLM board output, including 4-way input opening and closing functions, a total of eight pairs of contacts, which can test all control logic.

[0084] Step (5) displaying and storing the test results;

[0085] The data display module receives the measurement data sent by the test function module of the data measurement unit, and displays and stores the received measurement data.

[0086] Step (6) Test result analysis:

[0087] Step (6.1) loop resistance analysis, the data analysis module receives the loop resistance data sent by the measurement control module, and analyzes the loop resistance data, including calculation of the loop impedance normal distribution characteristic diagram of multiple boards;

[0088] Step (6.2) board time characteristic analysis: the data analysis module analyzes the response time characteristics of the board under different voltages, including the calculation of normal distribution graphs of the time characteristics of multiple boards;

[0089] Step (6.2) Analysis of flip voltage characteristics of board signal: the data analysis module analyzes the flip voltage of the corresponding logic channel of the board, including the normal distribution diagram of the flip voltage of multiple boards and channels;

[0090] Step (6.3) Comparative analysis of historical data: the data analysis module performs comparative analysis on historical data and outputs analysis results in the form of bar charts, pie charts, line charts, etc.

[0091] Step (6.4) Fault analysis and warning information output: the data analysis module performs functional prediction on the measured abnormal conditions or potential abnormal conditions. If there is an abnormality, the fault is located and the user is alerted.

[0092] Step (7) Display and store the analysis results.

[0093] The data display module receives the analysis data sent by the data analysis module, and displays and stores the received analysis data.

[0094] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A PLM board detection system, characterized in that: The system comprises: a data comprehensive processing unit and a data measuring unit, wherein data is exchanged between the data comprehensive processing unit and the data measuring unit; The data measurement unit is used to receive the instruction sent by the data integration processing unit, perform measurement according to the instruction, obtain measurement data, and send the measurement data to the data integration processing unit; The data comprehensive processing unit is used to receive the configuration instructions of the user, process and analyze the measurement data sent by the data measurement unit to generate analysis data, and display the measurement data and analysis data.

2. A PLM board detection system according to claim 1, characterized in that: The data measurement unit includes a measurement control module and a test function module. The measurement control module is used to receive instructions sent by the data integration processing unit, generate control signals according to the instructions sent by the data integration processing unit, and control the corresponding test function module through the control signals; the test function module is used to receive control signals sent by the measurement control module, perform corresponding functional tests according to the control signals, generate measurement data, and send the measurement data to the measurement control module. The measurement control module sends the received measurement data to the data integration processing unit.

3. A PLM board detection system according to claim 2, characterized in that: The test function module includes: a number recognition module, an impedance measurement module, a DAC output module, an ADC acquisition module, a switch quantity acquisition module, a signal switching module, a response time measurement module, and a leakage current detection module.

4. A PLM board detection system according to claim 2, characterized in that: The data comprehensive processing unit includes a test configuration module, a data analysis module, a manual / automatic test module, and a data display module; A test configuration module, used to receive configuration instructions from the user and send the instructions to the measurement control module of the data measurement unit; A data analysis module, used for receiving measurement data sent by the measurement control module of the data measurement unit, analyzing the received measurement data, generating analysis data, and comprehensively processing and analyzing the real-time or historical measurement data; Manual / automatic test module, used to configure the use of manual mode or automatic mode; The data display module is used to receive the measurement data sent by the test function module of the data measurement unit and the analysis data sent by the data analysis module, and display the received measurement data and analysis data.

5. A method for detecting a PLM board, characterized in that: The method comprises: Step (1) input the information of the board under test; Step (2) confirming the number of boards to be tested; Step (3) test mode configuration; Step (4) testing the board under test; Step (5) displaying and storing the test results; Step (6) test result analysis; Step (7) Display and store the analysis results.

6. A method for detecting a PLM board according to claim 5, characterized in that: The step (4) comprises: Step (4.1) uses the automatic test mode to perform board test detection: loop resistance test, leakage current test, input and output test, response time test; Step (4.2) uses manual test mode to perform board logic function test.

7. A method for detecting a PLM board according to claim 6, characterized in that: The loop resistance test is specifically as follows: by detecting that a board is inserted into a port, a test program is started, a loop resistance test is performed through an impedance measurement module, and loop resistance data is generated; and the loop resistance data is sent to a data analysis module of a data comprehensive processing unit through a measurement control module.

8. A method for detecting a PLM board according to claim 6, characterized in that: The leakage current detection is specifically as follows: a high-voltage power supply signal is output between the signal port and the external housing through the DAC output module, and a resistor with a relatively large resistance is connected in series in the loop. The resistance between the acquisition port and the housing is divided by the ADC acquisition module to generate acquisition voltage data. According to the principle of equal current in the same loop, the acquisition voltage data is measured and sent to the data analysis module of the data comprehensive processing unit through the measurement control module to calculate the leakage current.

9. A method for detecting a PLM board according to claim 6, characterized in that: The input and output test is specifically as follows: controlling the DAC output module to output the corresponding test signal to the PLM board under test, and controlling the ADC acquisition module to collect the output voltage of the PLM board under test, generating output voltage data, and sending the output voltage data to the data analysis module of the data comprehensive processing unit via the measurement control module.

10. A method for detecting a PLM board according to claim 6, characterized in that: The response time test includes: Step (a) The measurement control module receives a command sent by the data integration processing unit, and starts to control the DAC output module to output voltage signals to a group of input ports of the PLM board to be tested. At the same time, the DAC output module outputs another group of voltage signals to the output circuit of the PLM board to provide power. The ADC acquisition port starts to collect the output port signal of the board to be tested in real time, and the measurement control module starts timing at this time; Step (b) The PLM board to be tested collects data through its own collection port, processes the collected signal, and outputs it to the output port of the PLM board according to the actual situation after processing. The signal is a voltage signal; Step (c) After the measurement control module collects the voltage signal output by the PLM board to be tested, it sends the collected result to the data comprehensive processing unit and stops timing at the same time; Step (d) subtracts the time at which the timing in step (c) is stopped from the time at which the timing in step (a) is started, to obtain the response time of the corresponding logic circuit.

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