Power supply detection device for proton heavy ion accelerator

Abstract

The utility model provides a power supply detection device for a proton heavy ion accelerator. The power supply detection device comprises a measuring probe and a controller module. The input end of the measuring probe is electrically connected to the output end of the power supply equipment so as to measure the output voltage of the power supply equipment; the output end of the measuring probe is electrically connected to the controller module and inputs the output voltage of the power supply equipment to the controller module, and the controller module controls the measuring probe to measure the output voltage of the power supply equipment according to a preset frequency. According to the scheme, the troubleshooting time of the beam fault caused by the unstable power supply is greatly shortened, the problem is found in advance when the power supply function is unstable, the replacement time is set to the non-treatment time, and downtime caused by thorough damage of the power supply is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of proton and heavy ion accelerators, in particular to a power supply detection device for proton and heavy ion accelerators. Background Art

[0002] The beam transport line of a proton and heavy ion accelerator's treatment system consists of numerous magnets, each powered by a power supply. The power supply outputs direct current to the magnets, generating the magnetic field required for the beam. The power supply's output is characterized by high voltage and high current. For example, the power supply for the bending magnets entering the treatment room can reach 310V and 1250A, while the power supply for magnets responsible for treatment room safety can reach 2000V and 875A. The power supply incorporates a feedback loop that measures the power supply's output parameters and feeds them back to the power supply control system, ensuring a stable current output. However, if the power supply control system malfunctions, the power supply output can become unstable, resulting in extremely short-term current fluctuations. These fluctuations can directly affect the beam parameters of the proton and heavy ion accelerator's treatment system. For example, fluctuations in the power supply output within 100 microseconds can be detected by the patient terminal beam monitoring system, triggering a safety interlock and terminating the beam.

[0003] The current problem is that, due to the large number of magnets on the beam transport line, when beam parameter changes are detected by the beam monitoring system at the beam extraction terminal, it is difficult to determine which power supply device is causing the disturbance. Even if physical theory suggests that a particular power supply device is experiencing output instability, there is no way to directly verify the fluctuations by measuring the power supply device. When the disturbance is large enough to trigger the terminal interlock, the problematic magnet power supply needs to be troubleshooted. However, because the disturbance is only sporadic, the control system of the magnet power supply in question cannot identify that it is faulty. In this case, even if a spare part is desired, it is necessary to first locate the magnet power supply that is causing the disturbance in the beam, otherwise a needle-in-a-haystack replacement would be necessary.

[0004] Current technology primarily relies on oscilloscopes to measure power supply output. However, because different beam parameters require different power supply outputs, and power supply disturbances are not periodic, it's difficult to pre-set the measurement range on an oscilloscope to capture abnormal fluctuations. Furthermore, these fluctuations are sporadic, occurring only a few times within a 24-hour period. This makes it difficult for on-site engineers to detect these fluctuations within the limited time available for troubleshooting. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and to provide a power supply detection device for a proton and heavy ion accelerator.

[0006] The utility model achieves the above technical effects through the following technical solutions:

[0007] A power supply detection device for a proton and heavy ion accelerator, the power supply detection device comprising:

[0008] a measuring probe, wherein an input end of the measuring probe is electrically connected to an output end of the power supply device to measure an output voltage of the power supply device;

[0009] A controller module is provided, wherein the output end of the measuring probe is electrically connected to the controller module and the output voltage of the power supply device is input to the controller module. The controller module controls the measuring probe to measure the output voltage of the power supply device at a preset frequency.

[0010] This solution enables non-interfering monitoring of power supply equipment, without impacting patient treatment. By performing measurements at a preset frequency, high-resolution voltage measurements can be achieved, enabling rapid localization of faulty magnet power supplies, improving both accuracy and speed. This solution significantly reduces troubleshooting time for beam failures caused by unstable power supplies. By identifying power supply instability early, problems can be scheduled during non-treatment hours, avoiding downtime caused by complete power supply failure.

[0011] Preferably, the controller module comprises a processing unit configured to separate a noise signal from the output voltage using Fourier transform.

[0012] In this solution, the processing unit can process the data as needed, calculate the Fourier transform of the output voltage, map the time domain signal to the frequency domain, and separate the periodic noise signal, so that the cause of the fault can be discovered more directly.

[0013] Preferably, the controller module further includes an alarm unit, and the processing unit is configured to control the alarm unit to trigger an alarm signal when detecting that the output voltage is unstable.

[0014] In this solution, an alarm signal is issued when the power supply function is detected to be unstable, which promptly reminds engineers to replace the power supply to eliminate potential faults.

[0015] Preferably, the power supply detection device further comprises a display screen, which is electrically connected to the controller module and displays the output voltage measured by the measuring probe.

[0016] In this solution, the output voltage is displayed on the screen, which is more intuitive and convenient for engineers to troubleshoot.

[0017] Preferably, the controller module includes an analog input unit, and the output end of the measuring probe is electrically connected to the analog input unit to input the voltage signal measured by the measuring probe into the analog input unit.

[0018] Preferably, the controller module includes a device connection interface, which is used to connect to a WiFi module so that the controller module can access the network where the proton and heavy ion accelerator is located through a wireless network.

[0019] In this solution, the proton and heavy ion accelerator equipment site network can be accessed through wireless signals without the need to connect to a fixed on-site industrial Ethernet cable, making the power detection device portable and allowing it to be conveniently deployed near any power supply device in the accelerator and its power room.

[0020] Preferably, the power supply detection device further includes a device terminal, the controller module is connected to the device terminal via wireless network communication, and transmits the output voltage to the device terminal.

[0021] In this solution, through the above-mentioned structural setting, the equipment terminal can be set up in a location such as an office, thereby realizing remote detection by engineers.

[0022] Preferably, the power supply detection device includes a plurality of measuring probes, and the plurality of measuring probes are electrically connected to different power supply devices to simultaneously detect the output voltages of different power supply devices;

[0023] The controller module includes a plurality of input terminals, and the plurality of measuring probes are respectively connected to the corresponding input terminals.

[0024] In this solution, measuring probes are provided on multiple power supply devices, which can simultaneously measure the output voltages of different power supply devices and improve troubleshooting efficiency.

[0025] Preferably, the preset frequency is 20,000 measurements per second.

[0026] Preferably, the measuring probe is a high-voltage differential probe.

[0027] In this solution, a high-voltage differential probe converts the high voltage output of the power supply to a low voltage without affecting the output from the power supply to the magnet, enabling interference-free measurement. The high-voltage differential probe protects the controller module's input terminals from damage caused by high-voltage signals and enables accurate signal measurements in high-voltage environments.

[0028] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0029] The positive benefits of this utility model include enabling interference-free monitoring of power supply equipment, thus preventing disruption to patient treatment. By performing measurements at a preset frequency, high-resolution voltage measurements can be achieved, enabling rapid localization of the faulty magnet power supply, improving both accuracy and speed. This solution significantly reduces the time required to troubleshoot beam failures caused by unstable power supply functions. By identifying power supply instability early, the problem can be scheduled for replacement during non-treatment hours, avoiding downtime caused by complete power supply failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art will be more aware of the above and other features and advantages of the present invention.

[0031] Figure 1 Schematic diagram of a power supply detection device according to a preferred embodiment of the present utility model.

[0032] The accompanying drawings are numerals as follows:

[0033] Measuring probe 101

[0034] Controller module 102

[0035] Processing unit 1021

[0036] Alarm unit 1022

[0037] Display 1023

[0038] Analog input unit 1024

[0039] Device terminal 103 DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0041] In this document, “illustrative” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “illustrative” should not be interpreted as a more preferred or more advantageous technical solution.

[0042] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled.

[0043] In this article, "one" not only means "only one" but also "more than one". In this article, "first", "second", etc. are only used to distinguish one from another, and do not indicate their importance or order, or the premise of each other.

[0044] The utility model discloses a power supply detection device for a proton and heavy ion accelerator. Figure 1 As shown, the power supply detection device includes a measuring probe 101 and a controller module 102. The input end of the measuring probe 101 is electrically connected to the output end of the power supply device to measure the output voltage of the power supply device; the output end of the measuring probe 101 is electrically connected to the controller module 102, and the output voltage of the power supply device is input to the controller module 102. The controller module 102 controls the measuring probe 101 to measure the output voltage of the power supply device according to a preset frequency.

[0045] This implementation enables non-interfering monitoring of power supply equipment, without impacting patient treatment. By performing measurements at a preset frequency, high-resolution voltage measurements can be achieved, enabling rapid localization of faulty magnet power supplies, improving both accuracy and speed. This solution significantly reduces troubleshooting time for beam failures caused by unstable power supplies. By identifying power supply instability early, problems can be scheduled during non-treatment hours, avoiding downtime caused by complete power supply failure.

[0046] Controller module 102 includes a processing unit 1021, which is configured to use a Fourier transform to separate noise signals from the output voltage. Processing unit 1021 can process data as needed, calculate the Fourier transform of the output voltage, map the time-domain signal to the frequency domain, and separate periodic noise signals, thereby more directly identifying the cause of the fault.

[0047] The controller module 102 also includes an alarm unit 1022. The processing unit 1021 is configured to control the alarm unit 1022 to trigger an alarm signal when it detects that the output voltage is unstable. The alarm signal is issued when the measured power supply function is detected to be unstable, which promptly reminds engineers to replace the power supply to eliminate potential faults.

[0048] The power supply detection device further includes a display screen 1023, which is electrically connected to the controller module 102 and displays the output voltage measured by the measuring probe 101. Displaying the output voltage on the display screen 1023 is more intuitive and facilitates troubleshooting for engineers.

[0049] The controller module 102 includes an analog input unit 1024. The output end of the measuring probe 101 is electrically connected to the analog input unit 1024 so as to input the voltage signal measured by the measuring probe 101 into the analog input unit 1024. The analog input unit 1024 is electrically connected to the processing unit 1021 to input the voltage signal into the processing unit 1021.

[0050] The controller module 102 includes a device connection interface for connecting to a WiFi module, enabling the controller module 102 to access the network at the proton and heavy ion accelerator via a wireless network. Wireless access to the network at the proton and heavy ion accelerator is possible, eliminating the need for a fixed on-site industrial Ethernet cable. This makes the power detection device portable, allowing it to be conveniently deployed near any power supply device in the accelerator and its power supply room.

[0051] Controller module 102 can specifically be a programmable logic controller (PLC). By programming the PLC, it continuously measures the power supply device's output voltage 20,000 times per second and can process the data in real time as needed. For example, it can calculate the Fourier transform of the power supply's output voltage, map the time-domain signal to the frequency domain, and thus isolate periodic noise signals, directly identifying the cause of the fault. The PLC hardware in this embodiment may include a processing unit 1021, a power supply unit, an overcurrent protection module, and an authorization module.

[0052] After the controller module 102 is connected to a third-party Wi-Fi module via a USB port, it can access the proton and heavy ion accelerator's on-site network via wireless signals. PLC programming automatically reads the IP address upon system startup and displays it on the display 1023. This eliminates the need for a fixed on-site industrial Ethernet cable, making the power monitoring device portable and easily deployable near any power supply in the accelerator or its power supply room. After obtaining the IP address, engineers can perform remote monitoring from their office.

[0053] The power supply detection device further includes a device terminal 103. The controller module 102 is connected to the device terminal 103 via wireless network communication and transmits the output voltage to the device terminal 103. With the above structure, the device terminal 103 can be set up in an office or other location, thereby enabling remote detection by engineers.

[0054] The power supply detection device includes multiple measurement probes 101, which are electrically connected to different power supply devices to simultaneously detect the output voltages of these devices. A controller module 102 includes multiple input terminals, to which the measurement probes 101 are connected. Installing measurement probes 101 on multiple power supply devices allows for simultaneous measurement of the output voltages of these devices, improving troubleshooting efficiency.

[0055] The preset frequency is 20,000 measurements per second. This frequency ensures high-time-resolution voltage measurement and improves the accuracy of fault location.

[0056] The measurement probe 101 is a high-voltage differential probe. This probe converts the high voltage output of the power supply to a low voltage without affecting the output from the power supply to the magnet, enabling interference-free measurement. This probe protects the input terminals of the controller module 102 from damage caused by high-voltage signals and enables accurate signal measurements in high-voltage environments.

[0057] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A power supply detection device for a proton and heavy ion accelerator, characterized in that: The power supply detection device comprises: a measuring probe, wherein an input end of the measuring probe is electrically connected to an output end of the power supply device to measure an output voltage of the power supply device; a controller module, wherein the output end of the measuring probe is electrically connected to the controller module and the output voltage of the power supply device is input to the controller module, and the controller module controls the measuring probe to measure the output voltage of the power supply device at a preset frequency; The power supply detection device includes a plurality of measuring probes, which are electrically connected to different power supply devices to simultaneously detect the output voltages of different power supply devices; the controller module includes a plurality of input terminals, and the plurality of measuring probes are respectively connected to corresponding input terminals; Wherein, the measuring probe is a high-voltage differential probe.

2. The power supply detection device for a proton and heavy ion accelerator according to claim 1, wherein: The controller module further includes an alarm unit, and the processing unit is configured to control the alarm unit to trigger an alarm signal when detecting that the output voltage is unstable.

3. The power supply detection device for a proton and heavy ion accelerator according to claim 1, wherein: The power supply detection device further includes a display screen, which is electrically connected to the controller module and displays the output voltage measured by the measuring probe.

4. The power supply detection device for a proton and heavy ion accelerator according to claim 1, wherein: The controller module includes an analog input unit, and the output end of the measuring probe is electrically connected to the analog input unit so as to input the voltage signal measured by the measuring probe into the analog input unit.

5. The power supply detection device for a proton and heavy ion accelerator according to claim 1, wherein: The controller module includes a device connection interface, which is used to connect to a WiFi module so that the controller module can access the network at the location of the proton and heavy ion accelerator through a wireless network.

6. The power supply detection device for a proton and heavy ion accelerator according to claim 5, characterized in that: The power supply detection device further includes a device terminal. The controller module is connected to the device terminal via wireless network communication and transmits the output voltage to the device terminal.

7. The power supply detection device for a proton and heavy ion accelerator according to claim 1, wherein: The preset frequency is 20,000 measurements per second.

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