Self-diagnosis artificial line and self-diagnosis method thereof
By introducing the self -diagnostic system of LC networks, power modules, isolation modulation circuits, and microcontroller MCU in the artificial line, the existing human workline lacks real -time self -detection and pulse width regulation capacity, and realizes high accuracy components. Diagnosis and system performance optimization.
Patent Information
- Application Number
- CN202411280947.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-01-24
AI Technical Summary
The existing artificial lines lack real-time self-detection function, resulting in late detection of faults, and the series of inductors and capacitors are fixed, making it difficult to adjust the pulse width.
A self -diagnostic artificial line is designed, including the LC network, power module, isolation modulation circuit and microcontroller MCU. Through the setting of high -resistant switch, accurately control the charging and discharge process of the inductance and capacitors, and realize the separate diagnosis of the component. Microcomputers monitor and control the system status in real time to ensure system performance optimization.
It achieves accurate diagnosis of artificial line components, improves the accuracy and reliability of diagnosis, enhances the security and fault tolerance of the system, detects and handles faults in a timely manner, and shortens fault diagnosis and maintenance time.
Smart Images
Figure CN119362868A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a self-diagnostic artificial line and a self-diagnostic method thereof. Background Art
[0002] Artificial line is also called pulse forming network (PFN). Artificial line is an important component in linear pulse modulator. This component is widely used in high-energy electron accelerators, medical accelerators, industrial irradiation accelerators, synchrotron radiation accelerators, radar transmitters and other fields.
[0003] As time goes by, the performance parameters of the capacitor and inductor components that make up the artificial lines will change. Currently, artificial lines do not have real-time self-detection capabilities, and by the time a fault is discovered it is already too late.
[0004] In addition, the current artificial lines have fixed inductance and capacitance levels, which leads to fixed pulse width and difficulty in adjustment. Summary of the invention
[0005] The purpose of the present disclosure is to provide a self-diagnostic artificial line and a self-diagnostic method thereof, so as to solve at least part of the above-mentioned technical problems.
[0006] A first aspect of an embodiment of the present disclosure provides a self-diagnosis artificial line, the self-diagnosis artificial line comprising:
[0007] An LC network consisting of at least one stage of inductance (L) and capacitance (C) connected in series, wherein each stage of capacitance (C) is connected in series with a high withstand voltage switch (Kn), and each stage of inductance (L) is connected in parallel with a high withstand voltage switch (Sn);
[0008] A power module, used for charging the LC network through a charging resistor (R0) and a switch (Ki), and discharging the LC network through a discharging resistor (R1) and a switch (K0);
[0009] An isolation modulation circuit, connected in parallel with the LC network, for obtaining voltage signals at both ends of the LC network and converting them into digital signals;
[0010] A microcontroller (MCU) is used to receive the digital signal of the isolation modulation circuit and control the closing and opening of each switch in the LC network and the output voltage of the power module.
[0011] The main technical effects achieved by the embodiments of the present disclosure are: through the setting of the high withstand voltage switch (Kn) and the high withstand voltage switch (Sn), the charging and discharging process of the inductor and capacitor in the LC network can be accurately controlled, so as to realize the individual diagnosis of each component and improve the accuracy and reliability of the diagnosis; the use of the isolation modulation circuit ensures the electrical isolation between the high voltage signal and the microcontroller (MCU), prevents the possible voltage shock from damaging the MCU, and enhances the safety of the system; the real-time control and monitoring capabilities of the MCU enable the system to dynamically respond to the state changes of the LC network, timely adjust the output voltage of the power module, and optimize the system performance. In summary, when the artificial line in the embodiments of the present disclosure needs to be detected, the MCU can be controlled to perform self-detection, ensuring the stable operation of the equipment; and when a certain capacitor breaks down at high voltage, it can be bypassed by a switch and only used normally under the condition of changing the pulse.
[0012] Optionally, the withstand voltage of the high withstand voltage switch (Kn) and / or the high withstand voltage switch (Sn) is greater than or equal to the charging voltage of the corresponding stage capacitor (C).
[0013] The main technical effects achieved by the embodiments of the present disclosure are: ensuring the safety of the high-voltage switch when charging the LC network, preventing damage to the switch due to excessive voltage, and thus improving the durability and safety of the artificial line.
[0014] A second aspect of the embodiments of the present disclosure provides a self-diagnosis method for a self-diagnosis artificial line, wherein the self-diagnosis method adopts the self-diagnosis artificial line as described above.
[0015] Optionally, the self-diagnosis method comprises the following steps:
[0016] The microcontroller (MCU) controls the power module to charge the LC network;
[0017] The isolation modulation circuit monitors the voltage signal of the LC network and converts the voltage signal into a digital signal and transmits it to the microcontroller (MCU);
[0018] The microcontroller (MCU) determines whether the performance of the inductor (L) and the capacitor (C) in the LC network is normal based on the digital signal; if an abnormality is detected, the microcontroller (MCU) controls the corresponding high-voltage switch (Kn) or (Sn) to bypass to maintain the basic function of the LC network.
[0019] The main technical effects achieved by the embodiments of the present disclosure are: through the self-diagnosis process controlled by the MCU, abnormal components in the LC network can be discovered in time, and by controlling the high-voltage switch (Kn) or (Sn) for bypass, the basic functions of the system are maintained, thereby improving the fault tolerance and stability of the system; the self-diagnosis method can automatically record the time, location and type of the abnormality, provide maintenance personnel with detailed fault information, greatly shorten the time for fault diagnosis and maintenance, and improve maintenance efficiency.
[0020] Optionally, when the microcontroller (MCU) detects an abnormality in a certain inductor or capacitor in the LC network, it automatically records the time, location and type of the abnormality and stores corresponding diagnostic data.
[0021] The main technical effect achieved by the embodiments of the present disclosure is that the abnormality recording function enables maintenance personnel to quickly locate the time, location and type of problem occurrence, facilitates rapid response and maintenance, and reduces the time and cost of fault diagnosis.
[0022] Optionally, a microcontroller (MCU) monitors the voltage change of the LC network in real time during the charging and discharging process of the LC network, and calculates the actual values of the inductance and capacitance through an algorithm to determine whether they are within a preset performance range.
[0023] The main technical effects achieved by the embodiments of the present disclosure are: real-time monitoring and calculation of the actual values of inductance and capacitance, ensuring that the performance of the artificial line is always in the best state, and improving the working efficiency and accuracy of the artificial line.
[0024] Optionally, a microcontroller (MCU) controls the detection of the inductance (L) in the LC network, comprising the following steps:
[0025] Disconnect all high-voltage switches (Sn) connected in parallel with the inductor to be detected, and close the high-voltage switch (Kn) connected in series with the inductor to be detected;
[0026] The microcontroller (MCU) controls the power module to charge the detected inductor and monitors the voltage change during the charging process through the isolation modulation circuit;
[0027] The microcontroller (MCU) calculates the inductance value of the inductor being tested based on the voltage change and the known current, resistance and time to determine whether it meets the preset performance standards.
[0028] The main technical effects achieved by the embodiments of the present disclosure are: by disconnecting all high-voltage switches (Sn) connected in parallel with the inductor to be detected and closing the high-voltage switch (Kn) connected in series with the inductor to be detected, it is possible to ensure that the inductor to be detected is independent of other circuit elements, thereby enabling accurate measurement; the MCU controls the power supply module to charge the inductor to be detected, and monitors the voltage changes during the charging process in real time, and calculates the inductance value through an algorithm to quickly locate whether the inductor has a fault; by accurately measuring the inductance value, the deviation or damage of the inductor can be discovered in time, thereby taking corresponding maintenance measures to avoid the performance degradation of the entire LC network due to inductor failure.
[0029] Optionally, a microcontroller (MCU) controls the detection of the capacitance (C) in the LC network, including the following steps:
[0030] Close all high-voltage switches (Kn) connected in series with the capacitor to be detected, and open the high-voltage switches (Sn) connected in parallel with the capacitor to be detected;
[0031] The microcontroller (MCU) controls the power module to charge the detected capacitor and monitors the voltage change during the charging process through the isolation modulation circuit;
[0032] The microcontroller (MCU) calculates the capacitance of the capacitor being tested based on the voltage change and the known current, resistance and time to determine whether it meets the preset performance standards.
[0033] The main technical effects achieved by the embodiments of the present disclosure are: by closing all high-voltage switches (Kn) connected in series with the capacitor to be detected and disconnecting the high-voltage switches (Sn) connected in parallel with the capacitor to be detected, it is possible to ensure that the capacitor to be detected is independent of other circuit elements and accurately measured; the MCU controls the power supply module to charge the capacitor to be detected, and monitors the voltage changes during the charging process in real time. By calculating the capacitance value through an algorithm, it is possible to quickly locate whether the capacitor has a fault; by accurately measuring the capacitance value, the deviation or damage of the capacitor can be discovered in time, so that corresponding maintenance measures can be taken to optimize the performance of the entire LC network.
[0034] Optionally, during the self-diagnosis process, the microcontroller (MCU) can receive test instructions input from the outside, perform detailed tests on specific inductors or capacitors in the LC network according to the instructions, and output the test results.
[0035] The main technical effects achieved by the embodiments of the present disclosure are: the reception and execution of external test instructions improves the flexibility and adaptability of artificial lines, allowing users to perform specific tests as needed, thereby enhancing the user experience of artificial lines.
[0036] Optionally, the microcontroller (MCU) can provide real-time diagnostic information to the operator through a user interface during self-diagnosis, including the status of the LC network, abnormal alarms and recommended maintenance measures.
[0037] The main technical effects achieved by the embodiments of the present disclosure are: the real-time diagnostic information provided by the user interface enables the operator to intuitively understand the working status of the artificial line, discover and handle problems in a timely manner, and improve the usability and safety of the artificial line. At the same time, the provision of maintenance suggestions helps to extend the service life of the artificial line. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Figure 1 A structural diagram of a self-diagnostic artificial line provided in an embodiment of the present disclosure. DETAILED DESCRIPTION
[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The modes described in the following exemplary embodiments do not represent all modes consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.
[0040] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantitative limitation, but indicate that there is at least one, and if only "one" is referred to, it will be separately described. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms of "a", "an", "the" and "the" used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0041] like Figure 1 As shown, the first aspect of the embodiment of the present disclosure provides a self-diagnostic artificial line, which includes an LC network, a power module, an isolation modulation circuit and a microcontroller MCU. The LC network is composed of at least one level of inductor L and capacitor C connected in series, wherein each level of capacitor C is connected in series with a high withstand voltage switch Kn, and each level of inductor L is connected in parallel with a high withstand voltage switch Sn; the power module is used to charge the LC network through a charging resistor R0 and a switch Ki, and discharge the LC network through a discharge resistor R1 and a switch K0; the isolation modulation circuit is connected in parallel with the LC network to obtain the voltage signal at both ends of the LC network and convert it into a digital signal; the microcontroller MCU is used to receive the digital signal of the isolation modulation circuit, and control the closing and opening of each switch in the LC network, as well as the output voltage of the power module.
[0042] By setting the high withstand voltage switch Kn and the high withstand voltage switch Sn, the charging and discharging process of the inductor and capacitor in the LC network can be accurately controlled, so as to realize the individual diagnosis of each component, and improve the accuracy and reliability of the diagnosis; the use of the isolation modulation circuit ensures the electrical isolation between the high voltage signal and the microcontroller MCU, prevents the possible voltage shock from damaging the MCU, and enhances the safety of the system; the real-time control and monitoring capabilities of the MCU enable the system to dynamically respond to the state changes of the LC network, timely adjust the output voltage of the power module, and optimize the system performance. In summary, when the artificial line in the embodiment of the present disclosure needs to be detected, the MCU can be controlled to perform self-detection, ensuring the stable operation of the equipment; and when a certain capacitor breaks down at high voltage, it can be bypassed by a switch and used normally only under the condition of changing the pulse.
[0043] As an optional implementation, the withstand voltage of the high withstand voltage switch Kn and / or the high withstand voltage switch Sn is greater than or equal to the charging voltage of the corresponding stage capacitor C. The safety of the high withstand voltage switch when the LC network is charged is ensured, and damage to the switch caused by excessive voltage is prevented, thereby improving the durability and safety of the artificial line.
[0044] Continue to refer Figure 1 When the artificial line is working normally, the pulse width it generates is Where n is the number of LC network stages, L is the inductor of each stage, and C is the capacitance value of each stage. The invention can adjust the pulse width by adjusting the number of LC network stages. For example, when the maximum pulse width is required, switches S1...Sn are all open, and K1...Kn are all closed. In this case, the number of LC network stages is n; when S1 is closed, S2...Sn is open, K1 is open, and K2...Kn is closed, in this case the number of LC network stages is n-1; and so on, the number of LC network stages can be arbitrarily set to 1 to n stages.
[0045] When any component of the artificial line is damaged, for example, C2 is broken down by high voltage, the switch K2 connected in series with C2 can be opened for emergency use; for example, when L2 is short-circuited, the switch S2 connected in parallel with L2 can be closed for emergency use.
[0046] Detection of any L: When detecting any inductor L in the LC network, it is necessary to disconnect K1…Kn. Except for the switch S connected in parallel with the detected inductor, all other switches connected in parallel with the inductor need to be closed. For example, to detect inductor L2, it is necessary to disconnect K1…Kn and close S1, S3…Sn. During detection, turn on the power supply, set the power supply value to U, and control the MCU at time t0 to close Ki and Ko. The power supply forms a loop through the resistor Ri and the inductor L2, thereby charging the inductor L2. According to the inductor charging formula, the charging current is obtained. U1B is an op amp modulation circuit, which collects the R i voltage in real time and sends it to the MCU for processing, and can calculate the real-time charging current. Since i, U, Ri, and t are all known to the MCU, the inductance value of L2 can be calculated by formula ① to determine whether the inductance value is normal. The rest of the inductance detection is similar.
[0047] Detection of any C: When detecting any capacitor C in the LC network, except for the switch K in series with the detected capacitor, all other switches in series with the capacitor need to be opened. For the switch in parallel with the inductor, the detected capacitor level and the previous switch S need to be closed, and the following switches S should all be opened. For example, to detect capacitor C2, it is necessary to close S1 and S2, open S3...Sn, and switch K2, and open K1, K3...Kn. During detection, turn on the power supply, set the power supply value to U, and control it through the MCU at time t0, close Ki, and open Ko. The power supply forms a loop through the resistor Ri and capacitor C2, thereby charging the capacitor C2. According to the capacitor charging formula, the charging current is obtained. U1B is an op amp modulation circuit, which collects the R i voltage in real time and sends it to the MCU for processing, and can calculate the real-time charging current. Since i, U, R i, and t are all known to the MCU, the capacitance value of C2 can be calculated by formula ② to determine whether the capacitance value is normal. The rest of the capacitance detection is similar.
[0048] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.
Claims
1. A self-diagnostic artificial line, characterized in that: The self-diagnosis artificial line includes: An LC network consisting of at least one stage of inductance (L) and capacitance (C) connected in series, wherein each stage of capacitance (C) is connected in series with a high withstand voltage switch (Kn), and each stage of inductance (L) is connected in parallel with a high withstand voltage switch (Sn); A power module, used for charging the LC network through a charging resistor (R0) and a switch (K i), and discharging the LC network through a discharging resistor (R1) and a switch (K0); An isolation modulation circuit, connected in parallel with the LC network, for obtaining voltage signals at both ends of the LC network and converting them into digital signals; A microcontroller (MCU) is used to receive the digital signal of the isolation modulation circuit and control the closing and opening of each switch in the LC network and the output voltage of the power module.
2. A self-diagnostic artificial line according to claim 1, characterized in that: The withstand voltage of the high withstand voltage switch (Kn) and / or the high withstand voltage switch (Sn) is greater than or equal to the charging voltage of the corresponding stage capacitor (C).
3. A self-diagnosis method for self-diagnosis of artificial lines, characterized in that: The self-diagnosis method uses the self-diagnosis artificial line as described in any one of claims 1-2.
4. A self-diagnosis method for self-diagnosis artificial line according to claim 3, characterized in that: The self-diagnosis method comprises the following steps: The microcontroller (MCU) controls the power module to charge the LC network; The isolation modulation circuit monitors the voltage signal of the LC network and converts the voltage signal into a digital signal and transmits it to the microcontroller (MCU); The microcontroller (MCU) determines whether the performance of the inductor (L) and the capacitor (C) in the LC network is normal based on the digital signal; if an abnormality is detected, the microcontroller (MCU) controls the corresponding high-voltage switch (Kn) or (Sn) to bypass to maintain the basic function of the LC network.
5. A self-diagnosis method for self-diagnosis artificial line according to claim 4, characterized in that: When the microcontroller (MCU) detects an abnormality in an inductor or capacitor in the LC network, it automatically records the time, location and type of the abnormality and stores the corresponding diagnostic data.
6. A self-diagnosis method for self-diagnosis artificial line according to claim 4, characterized in that: The microcontroller (MCU) monitors the voltage changes of the LC network in real time during the charging and discharging process of the LC network, and calculates the actual values of the inductance and capacitance through an algorithm to determine whether they are within the preset performance range.
7. A self-diagnosis method for self-diagnosis artificial line according to claim 4, characterized in that: The microcontroller (MCU) controls the detection of the inductance (L) in the LC network, which includes the following steps: Disconnect all high-voltage switches (Sn) connected in parallel with the inductor to be detected, and close the high-voltage switch (Kn) connected in series with the inductor to be detected; The microcontroller (MCU) controls the power module to charge the detected inductor and monitors the voltage change during the charging process through the isolation modulation circuit; The microcontroller (MCU) calculates the inductance value of the inductor being tested based on the voltage change and the known current, resistance and time to determine whether it meets the preset performance standards.
8. A self-diagnosis method for self-diagnosis artificial line according to claim 4, characterized in that: The microcontroller (MCU) controls the detection of the capacitance (C) in the LC network, which includes the following steps: Close all high-voltage switches (Kn) connected in series with the capacitor to be detected, and open the high-voltage switches (Sn) connected in parallel with the capacitor to be detected; The microcontroller (MCU) controls the power module to charge the detected capacitor and monitors the voltage change during the charging process through the isolation modulation circuit; The microcontroller (MCU) calculates the capacitance of the capacitor being tested based on the voltage change and the known current, resistance and time to determine whether it meets the preset performance standards.
9. A self-diagnosis method for self-diagnosis artificial line according to claim 4, characterized in that: During the self-diagnosis process, the microcontroller (MCU) can receive test instructions input from the outside, perform detailed tests on specific inductors or capacitors in the LC network according to the instructions, and output the test results.
10. A self-diagnosis method for self-diagnosis artificial line according to claim 4, characterized in that: During the self-diagnosis process, the microcontroller (MCU) can provide real-time diagnostic information to the operator through the user interface, including the status of the LC network, abnormal alarms and recommended maintenance measures.