Control system with optical port interlocking protection function, controller and accelerator

Abstract

The invention provides a control system with an optical port interlocking protection function, a controller and an accelerator. The control system with the optical port interlocking protection function comprises the controller, an actuator, at least one external interlocking system and an electromagnetic shielding shell, wherein the controller and the actuator are arranged in the electromagnetic shielding shell, the controller is provided with at least one optical interface, and interlocking optical signals from an external interlocking system are received through optical fibers connected with the optical interfaces; the controller is used for outputting a working enable signal to the control end of the actuator according to the interlocking optical signal; and the actuator is used for controlling the working state of the equipment according to the working enable signal. A plurality of external interlocking systems are connected through the optical interfaces of the controller, multi-system safety interlocking of the accelerator can be controlled in a unified mode, meanwhile, safety interlocking information of the external safety interlocking systems is transmitted through optical signals, the influence of the electromagnetic environment on the safety interlocking process is reduced, and the working stability and reliability of equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of accelerator control technology, and in particular to a control system, controller and accelerator with optical port interlock protection function. Background Technology

[0002] In the past two or three decades, with the improvement of industrial technology, superconducting acceleration technology has developed rapidly. A superconducting accelerator is a superconducting accelerator that uses a superconducting accelerating cavity to accelerate charged particles such as electrons or protons. Superconducting accelerators achieve superconductivity by using a coolant such as liquid helium to cool the superconducting accelerating cavity, which is made of superconducting materials. This makes the resistance of the superconducting accelerating cavity essentially zero, eliminating power loss and effectively accelerating charged particles.

[0003] To achieve stable particle acceleration, accelerators require ensuring the stable and reliable operation of all internal and external equipment, and the ability to respond quickly and promptly to unexpected safety events to prevent accidents. Current technologies typically design safety interlock schemes separately for each internal accelerator component. This is because accelerators operate in a complex electromagnetic environment, and existing interlocking optical signals are generally electrical signals. Therefore, when applied to comprehensive safety interlock detection of accelerator equipment, these electrical signals are easily interfered with, leading to false triggering of safety interlocks and affecting the overall operation of the accelerator.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a control system, controller and accelerator with optical port interlock protection function, so as to solve the problem that existing accelerators are difficult to achieve multi-module safety interlock, and the electrical signals are easily interfered with during operation, resulting in false triggering of safety interlock.

[0006] The technical solution of the present invention is as follows: In a first aspect, the present invention provides a control system with optical port interlocking protection function, comprising: a controller, an actuator, at least one external interlocking system, and an electromagnetic shielding housing; wherein... The controller and the actuator are disposed inside the electromagnetic shielding housing. The controller is provided with at least one optical interface and receives interlocking optical signals from the external interlocking system through optical fibers connected to each optical interface. The controller is connected to the actuator through an electrical signal transmission line and is used to output a working enable signal to the control terminal of the actuator according to the interlocking optical signal. The actuator is connected to the device and is used to control the working state of the device according to the working enable signal.

[0007] In a further embodiment of the present invention, the controller further includes an interlocking circuit; wherein, The optical interface is located on the electromagnetic shielding shell of the controller. An optical fiber is inserted into the outer end of the optical interface, and the inner end of the optical interface is connected to the interlocking circuit. It is used to receive the interlocking optical signal through the optical fiber when the optical fiber is inserted, and to convert the optical signal into a logic level signal and then output the logic level signal to the interlocking circuit. The interlocking circuit is used to connect to the actuator and to output the working enable signal to the actuator when the logic level signal is received.

[0008] A further provision of the present invention includes an external control system, and the controller further includes an interlocking status monitoring module. The detection end of the interlocking status monitoring module is connected to the interlocking circuit. The interlocking status monitoring module is connected to the external control system and is used to collect and store the status signals in the interlocking circuit. When the external control system sends a heartbeat signal, the module outputs a heartbeat feedback signal to the external control system based on the status signal.

[0009] In a further embodiment of the present invention, the controller includes a first optical interface, and the interlocking circuit includes: a multi-terminal interlocking logic gate, an amplification unit, a level signal conversion unit, and a signal enable unit; wherein, the first input terminal of the multi-terminal interlocking logic gate is connected to a standard level voltage, the second input terminal of the multi-terminal interlocking logic gate is connected to the inner end of the first optical interface, and the output terminal of the multi-terminal interlocking logic gate is connected to the control terminal of the amplification unit; The signal output terminal of the amplification unit is connected to the level signal conversion unit and the signal enable unit respectively. The amplification unit outputs intermediate signals to the level signal conversion unit and the signal enable unit respectively according to the logic level signal output by the multi-terminal interlocking logic gate. The level signal conversion unit is connected to the interlocking status monitoring module and is used to output the status signal to the interlocking status monitoring module according to the intermediate signal; The signal enable unit is connected to the actuator and is used to output the working enable signal to the actuator according to the intermediate signal.

[0010] In a further embodiment of the present invention, the controller includes at least one optical interface, and the interlocking circuit includes: a multi-terminal interlocking logic gate, an amplification unit, a level signal conversion unit, and a signal enable unit; wherein, the detection terminal of the multi-terminal interlocking logic gate is connected to the inner terminal of each optical interface, and the output terminal of the multi-terminal interlocking logic gate is connected to the control terminal of the amplification unit; The signal output terminal of the amplification unit is connected to the level signal conversion unit and the signal enable unit respectively. The amplification unit outputs intermediate signals to the level signal conversion unit and the signal enable unit respectively according to the logic level signal output by the multi-terminal interlocking logic gate. The level signal conversion unit is connected to the interlocking status monitoring module and is used to output the status signal to the interlocking status monitoring module according to the intermediate signal; The signal enable unit is connected to the actuator and is used to output the working enable signal to the actuator according to the intermediate signal.

[0011] In a further embodiment of the present invention, the amplification unit includes a first switching transistor, the control terminal of the first switching transistor is connected to the output terminal of the multi-terminal interlocking logic gate, a first terminal of the first switching transistor is connected to a working voltage and is connected to the level signal conversion unit and the signal enable unit; the other terminal of the first switching transistor is grounded.

[0012] In a further embodiment of the present invention, the multi-terminal interlocking logic gate is a multi-terminal AND gate or a multi-terminal OR gate.

[0013] In a further embodiment of the present invention, the first switching transistor is a bipolar transistor, and the level signal conversion unit is an analog-to-digital converter.

[0014] Secondly, the present invention provides a controller for use in the control system with optical port interlock protection function described above.

[0015] Thirdly, the present invention also provides an accelerator, which includes at least one control system with optical port interlock protection function as described above.

[0016] This invention provides a control system, controller, and accelerator with optical port interlocking protection. The control system includes: a controller, an actuator, at least one external interlocking system, and an electromagnetic shielding enclosure. The controller and actuator are housed inside the electromagnetic shielding enclosure. The controller has at least one optical interface and receives interlocking optical signals from the external interlocking systems via optical fibers connected to each interface. The controller is connected to the actuator via an electrical signal transmission line and outputs a work enable signal to the control terminal of the actuator based on the interlocking optical signal. The actuator is connected to the equipment and controls the equipment's operating state based on the work enable signal. This invention connects multiple external interlocking systems via the controller's optical interface, enabling unified control of multiple accelerator system safety interlocks. Simultaneously, the transmission of safety interlocking information from external safety interlocking systems via optical signals reduces the impact of the electromagnetic environment on the safety interlocking process, improving equipment stability and reliability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the control system with optical port interlock protection function in this invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the optical interface in this invention.

[0020] Figure 3 This is a schematic diagram of the internal circuit of the interlocking circuit in a preferred embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal circuit of the interlocking circuit in another preferred embodiment of the present invention.

[0022] Figure 5 This is a structural block diagram of the power source in this invention.

[0023] The labels in the attached diagram are as follows: 1. Controller; 11. Optical interface; 111. Photoelectric converter; 12. Interlocking circuit; 121. Multi-terminal interlocking logic gate; 122. Amplification unit; 123. Level signal conversion unit; 124. Signal enable unit; 13. Interlocking status monitoring module; 2. Actuator; 21. Enable signal interface; 22. Solid-state amplifier; 3. External interlocking system; 4. Electromagnetic shielding shell; 5. External control system. Detailed Implementation

[0024] This invention provides a control system, controller, and accelerator with optical port interlocking protection. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of the present invention involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0026] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0027] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0029] A superconducting accelerator is an accelerator constructed using a superconducting accelerating cavity or a superconducting main magnet. A superconducting accelerating cavity can generate a very strong accelerating electric field with very low microwave power; while a superconducting magnet can generate a strong confinement magnetic field with very low excitation power. Both can greatly reduce the size of the accelerator and reduce its power consumption, giving superconducting accelerators enormous advantages in terms of economy and technology.

[0030] The inventors discovered that existing superconducting accelerator construction involves an organic architecture of multiple systems and equipment structures. Therefore, ensuring interlocking between systems is crucial during implementation. For example, in a power source control system, a signal generator is used to generate a reference signal, a signal conditioning circuit amplifies and adjusts the gain of the reference signal to obtain a power amplified signal, a power transmitter converts the power amplified signal into a radio frequency (RF) signal and transmits it, and a power detection circuit detects the power transmission value of the RF signal during transmission and sends this value to the controller. Simultaneously, if the power transmission value does not match the target power value, the controller adjusts the reference signal generated by the signal generator and / or the signal conditioning circuit according to the power transmission value until the power transmission value detected by the power detection circuit matches the target power value. This system needs to use the controller to compensate for deviations caused by device aging, load changes, or environmental interference to ensure accurate power source output. However, existing controllers lack safety interlocking designs. In the accelerator field, stable and reliable operation is essential, along with timely responses to unexpected events to prevent safety incidents.

[0031] Similarly, in klystron equipment within superconducting accelerators, a signal acquisition card acquires the amplified arcing signal, converts it into a digital signal, and transmits it to the signal processing system. The signal processing system demodulates the arcing signal, records the arcing status, and generates corresponding interlocking optical signals based on the arcing status, transmitting them to the timing and interlocking systems. The interlocking system controls the start and stop of lower-level systems based on the interlocking optical signals transmitted by the signal processing system, using a switch signal as the interlocking trigger signal. There are only two states: circuit on and off. On means allowed output power, and off means cut off output power. In existing accelerator systems, interlocking schemes for individual devices require independent and complete detection and execution equipment. Furthermore, the corresponding safety interlocking equipment only detects arcing within a single device on a one-to-one basis, limiting its application scope. Because accelerators involve multiple complex devices, the actual circuit connections are complex and unstable, leading to additional design and operating costs. Accelerators operate in complex electromagnetic environments, where electrical signals are easily interfered with. This can cause false interlocking when using electrical signals for interlocking optical signal transmission, affecting the overall operation of the accelerator.

[0032] To resolve the above technical issues, please refer to [link / reference]. Figure 1 and Figure 2This invention provides a control system with optical port interlocking protection function, comprising: a controller 1, an actuator 2, at least one external interlocking system 3, and an electromagnetic shielding housing 4; wherein, the controller 1 and the actuator 2 are disposed inside the electromagnetic shielding housing 4, the controller 1 is provided with at least one optical interface 11, and receives interlocking optical signals from the external interlocking system 3 through optical fibers connected to each of the optical interfaces 11; the controller 1 is connected to the actuator 2 through an electrical signal transmission line, and the controller 1 is used to output a working enable signal to the control terminal of the actuator 2 according to the interlocking optical signal; the actuator 2 is connected to the equipment and is used to control the working state of the equipment according to the working enable signal.

[0033] The controller 1 is equipped with an optical interface 11, which receives interlocking optical signals from the external interlocking system 3. The controller then uses the converted interlocking optical signals to generate an enable signal, controlling the actuator 2 to achieve a safety interlock for the actuator 2. The optical interface 11 is a physical interface on optical communication equipment used to connect fiber optic cables. Its core function includes an arbitrary form of photoelectric converter 111 to convert the optical signal from the fiber optic cable into an electrical signal, facilitating processing by the electronic equipment in subsequent circuits. By adding the optical interface 11 to the controller 1, interlocking optical signals can be transmitted between the controller 1 and the external interlocking system 3 via optical fiber. The core advantage of fiber optic communication over traditional cable communication is that optical signals are largely unaffected by external electromagnetic signals, making it more suitable for accelerators with complex electromagnetic environments. This avoids interference from external electromagnetic signals on the interlocking optical signals, ensuring normal equipment operation. Furthermore, optical signals have no specific properties, making them compatible with any interlocking safety alarm system, thus offering a wide range of applications. The external interlocking system 3 is used to detect environmental stability and transmits interlocking optical signals when safety hazards exist. These optical signals are unaffected by external electromagnetic interference, ensuring accurate transmission to the controller 1. Since optical signals are less susceptible to electromagnetic interference within the accelerator, interlocking optical signals are used to transmit the interlocking information from the external interlocking system 3. After the interlocking optical signal enters the controller 1, the optical interface 11 performs photoelectric conversion, transforming the interlocking optical signal into a corresponding working enable signal. Simultaneously, the controller 1 connects to the enable signal interface 21 of the actuator 2, allowing the controller 1 to control the actuator 2 based on the converted working enable signal. When safety issues arise and the actuator 2's state needs to be controlled, the control system can quickly and stably implement safety interlocking. The external interlocking system 3 can be any type of interlocking safety alarm system, such as arcing, queuing, or radiation protection, and can be flexibly configured according to system needs. Each external interlocking system 3 uses optical signals to transmit safety interlocking information, i.e., interlocking optical signals.

[0034] The controller 1 employs an electromagnetic shielding housing 4 to shield against external electromagnetic interference. The electromagnetic shielding housing 4 is preferably made of metal; for example, it can be made of at least one material such as aluminum or steel. Alternatively, a plastic housing can be used for electromagnetic shielding. When a plastic housing is chosen, shielding can be achieved by internally spraying conductive paint, applying conductive foil, or using a metal plating layer, ensuring that the internal equipment is not affected by external electromagnetic interference. Furthermore, since the operation and communication functions of the controller 1 and actuator 2 are still implemented using ordinary semiconductor circuits, which require shielding against external electromagnetic interference, by placing the controller 1 and actuator 2 within the same electromagnetic shielding housing 4, there are no components of the controller 1, actuator 2, or the electrical signal structure used to transmit the enable signal that are exposed to electromagnetic interference, thus eliminating the need for additional electromagnetic shielding considerations. The at least one external interlocking system 3 refers to the fact that only one external interlocking system 3 can be selected, or multiple external interlocking systems 3 can be used simultaneously to achieve safety interlocking for different technical types, different functions, and different safety fields. The controller 1 is used to receive interlocking optical signals output by one or more safety interlocking systems, and manage multiple interlocking optical signals. According to each interlocking optical signal, the controller 1 controls the working state of the actuator 2 so that the controller 1 can meet the safety interlocking requirements of the accelerator.

[0035] Furthermore, the controller 1 also includes an interlocking circuit 12; wherein, the optical interface 11 is located on the electromagnetic shielding shell 4 of the controller 1, the outer end of the optical interface 11 is inserted into an optical fiber, and the inner end of the optical interface 11 is connected to the interlocking circuit 12, for receiving an interlocking optical signal through the optical fiber when the optical fiber is inserted, and converting the optical signal into a logic level signal and then outputting the logic level signal to the interlocking circuit 12; the interlocking circuit 12 is used to connect to the actuator 2, and is used to output the working enable signal to the actuator 2 when the logic level signal is received.

[0036] Specifically, the external control system 5 transmits the interlocking optical signal to the optical interface 11 via optical fiber. The optical interface 11 performs photoelectric conversion, converting the interlocking optical signal into a corresponding logic level signal, which is then transmitted to the interlocking circuit 12. When the optical interface 11 of the controller 1 receives the interlocking optical signal, the interlocking optical signal is transmitted to the subsequent interlocking circuit 12. The interlocking circuit 12 of the controller 1 is an independent circuit, designed using logic gate circuits, and only accepts logic level signals transmitted from the optical interface 11 for control. The logic level signal output by the optical interface 11 is used for logical operations to obtain the working enable signal for the actuator 2. The working enable signal is a control signal used to allow or disable the operation of a certain functional module, chip, or circuit, thereby realizing the interlocking control of the equipment. When the interlocking optical signal is transmitted into the controller 1, the optical interface 11 performs photoelectric conversion, converting the interlocking optical signal into a corresponding logic level signal, which is then transmitted to the interlocking circuit 12. The interlocking circuit 12 is an independent interlocking circuit 12 to ensure that the interlocking optical signal input and the system interlocking function are not affected by the operation of other components, such as control program jamming, and are only controlled by the logic level signal converted from the interlocking optical signal. This circuit adopts a logic gate circuit design, and the operation process only involves basic logic operations without complex program execution, thus ensuring the reliability of the interlocking function.

[0037] It should be noted that the controller 1 of the control system with optical port interlock protection function can be controlled by a single interlock optical signal or by multiple interlock optical signals. Therefore, as Figure 3 As shown in a preferred embodiment of the present invention, the controller 1 includes a first optical interface 11, and the interlocking circuit 12 includes: a multi-terminal interlocking logic gate 121, an amplification unit 122, a level signal conversion unit 123, and a signal enable unit 124; wherein, the first input terminal of the multi-terminal interlocking logic gate 121 is connected to a standard level voltage, the second input terminal of the multi-terminal interlocking logic gate 121 is connected to the inner end of the first optical interface 11, and the output terminal of the multi-terminal interlocking logic gate 121 is connected to the control terminal of the amplification unit 122; the signal output terminal of the amplification unit 122 is respectively connected to the control terminal of the amplification unit 122. The level signal conversion unit 123 and the signal enable unit 124 are connected. The amplification unit 122 outputs intermediate signals to the level signal conversion unit 123 and the signal enable unit 124 respectively according to the logic level signal output by the multi-terminal interlocking logic gate 121. The level signal conversion unit 123 is connected to the interlocking status monitoring module 13 and is used to output the status signal to the interlocking status monitoring module 13 according to the intermediate signal. The signal enable unit 124 is connected to the actuator 2 and is used to output the working enable signal to the actuator 2 according to the intermediate signal.

[0038] In this preferred embodiment, the controller 1 can be configured to receive only one interlocking optical signal. Correspondingly, the number of optical interfaces 11 on the electromagnetic shielding shell 4 is one, that is, only the first optical interface 11 is provided. Simultaneously, a control system with optical port interlocking protection function as in this preferred embodiment can also be established on the controller 1 with multiple optical interfaces 11, which will not be elaborated here. When only one interlocking optical signal is received, one of the channels of the multi-terminal interlocking logic gate 121 has a built-in standard level voltage as a standard voltage. For example, the standard level voltage is used to characterize the logic "1" signal input and can be 3.3V. The amplification unit 122 includes a first switching transistor Q1. The control terminal of the first switching transistor Q1 is connected to the output terminal of the multi-terminal interlocking logic gate 121. The first terminal of the first switching transistor Q1 is connected to the operating voltage and is connected to the level signal conversion unit 123 and the signal enable unit 124; the other terminal of the first switching transistor Q1 is grounded. Preferably, the first switching transistor Q1 is a transistor. The level signal conversion unit 123 is an analog-to-digital converter. The signal enable unit 124 is an RF switch, which is used to connect to the actuator 2 and to control the working state of the actuator 2 according to the high and low levels of the working enable signal.

[0039] When the multi-terminal interlocking logic gate 121 outputs a trigger signal to the control terminal of the first switch Q1, the first and second terminals of the first switch Q1 are turned on, and the input terminals of the level signal conversion unit 123 and the signal enable unit 124 are grounded and pulled low. Otherwise, the first and second terminals of the first switch Q1 are turned off, and the input terminals of the level signal conversion unit 123 and the signal enable unit 124 are connected to the operating voltage and pulled high. The trigger signal can be a high-level signal or a low-level signal, the operating signal is a 5V voltage, and the first switch Q1 can be one of a MOS transistor (Metal-Oxide-Semiconductor Field-Effect Transistor), a bipolar transistor, or an IGBT (Insulated-Gate Bipolar Transistor). Preferably, the first switch Q1 is a bipolar transistor. The level signal conversion unit 123 adopts an analog-to-digital converter (ADC), and the interlock status monitoring module 13 preferably adopts a CPU (Central Processing Unit) to collect and store the status signals in the interlock circuit 12, and output a heartbeat feedback signal to the external control system 5 according to the status signal when the external control system 5 sends a heartbeat signal.

[0040] like Figure 4 As shown, in another preferred embodiment of the present invention, the controller 1 includes at least one optical interface 11, and the interlocking circuit 12 includes: a multi-terminal interlocking logic gate 121, an amplification unit 122, a level signal conversion unit 123, and a signal enable unit 124; wherein, the detection terminal of the multi-terminal interlocking logic gate 121 is connected to the inner terminal of each optical interface 11, and the output terminal of the multi-terminal interlocking logic gate 121 is connected to the control terminal of the amplification unit 122; the signal output terminal of the amplification unit 122 is connected to the level signal conversion unit 123. The amplifier unit 122 is connected to the signal enable unit 124. The amplifier unit 122 outputs intermediate signals to the level signal conversion unit 123 and the signal enable unit 124 respectively according to the logic level signal output by the multi-terminal interlocking logic gate 121. The level signal conversion unit 123 is connected to the interlocking status monitoring module 13 and is used to output the status signal to the interlocking status monitoring module 13 according to the intermediate signal. The signal enable unit 124 is connected to the actuator 2 and is used to output the working enable signal to the actuator 2 according to the intermediate signal.

[0041] In this preferred embodiment, the input terminal of the multi-terminal interlocking logic gate 121 receives multiple interlocking optical signals through an optical interface 11, and converts them into multiple logic level signals through each optical interface 11. The multi-terminal interlocking logic gate 121 manages and performs logical operations on the logic level signals. For example, taking the input of three interlocking optical signals as an example, the input terminal of the multi-terminal interlocking logic gate 121 receives logic level signal A, logic level signal B, and logic level signal C respectively, obtaining corresponding intermediate signals. These intermediate signals are used to characterize and determine the operating state of the actuator 2. The amplification unit 122 includes a first switch Q1. The control terminal of the first switch Q1 is connected to the output terminal of the multi-terminal interlocking logic gate 121. The first terminal of the first switch Q1 is connected to a working voltage and is connected to the level signal conversion unit 123 and the signal enable unit 124; the other terminal of the first switch Q1 is grounded. The operating state of the amplification unit 122 is consistent with that in the preferred embodiment described above. The high and low levels output from the interlocking optical signal after logic operation are amplified by amplification unit 122 to output an intermediate signal. This intermediate signal is then used to acquire two signals: a status signal and a working enable signal. The status signal and the working enable signal are derived from the same signal path to ensure accurate reflection of the interlocking status of the device at actuator 2. The intermediate signal is converted from an analog quantity to a digital quantity (status signal) by a level conversion unit 123, and then input into the interlocking status monitoring module 13 for storage and subsequent status monitoring. For example, the interlocking status monitoring module 13 can be a CPU. If the actuator 2 is a power source, it is a radio frequency switch. The working enable signal is input to the radio frequency switch, and depending on the working enable signal, the radio frequency switch either turns on or off, thereby controlling the radio frequency output of the power source.

[0042] The multi-terminal interlocking logic gate 121 is either a multi-terminal AND gate or a multi-terminal OR gate, and can be configured according to the specific requirements of the safety interlocking circuit 12. For example, when a high-security, high-sensitivity safety interlock is required, the multi-terminal interlocking logic gate 121 can be configured as an OR gate. That is, interlocking is implemented when at least one of the multiple external interlocking systems 3 sends an interlocking optical signal for safety interlocking. The truth table of the multi-terminal interlocking logic gate 121 for the input logic level signals A, B, and C, and the output intermediate signal Q, is shown in Table 1. Table 1

[0043] Correspondingly, the multi-terminal interlocking logic gate 121 can also be set as an AND gate, that is, the safety interlock is realized when all multiple external interlocking systems 3 send out safety interlocking signals. Its logic truth table is shown in Table 2: Table 2

[0044] It should be noted that, in order to achieve other functions, the multi-terminal interlocking logic gate 121 can also be selected from any other type of logic gate as needed, which will not be elaborated here.

[0045] Furthermore, the control system with optical port interlocking protection function described in this invention also includes an external control system 5, and the controller 1 also includes an interlocking status monitoring module 13. The detection end of the interlocking status monitoring module 13 is connected to the interlocking circuit 12, and the interlocking status monitoring module 13 is connected to the external control system 5. It is used to collect and store the status signals in the interlocking circuit 12, and when the external control system 5 sends a heartbeat signal, it outputs a heartbeat feedback signal to the external control system 5 according to the status signal.

[0046] Specifically, this invention uses the level signal output by the interlocking circuit 12 as a working enable signal to control the device acting as the actuator 2 via the controller 1. While controlling the internal operation of the device through the interlocking optical signal, a monitoring circuit is also provided for the interlocking circuit 12. This circuit only monitors the status and has no control capability. In this monitoring circuit, the interlocking status monitoring module 13 is connected to the external control system 5 through the network interface on the controller 1. The external control system 5 and the interlocking status monitoring module 13 of the controller 1 periodically feedback the interlocking status via a heartbeat signal. The heartbeat signal is a small signal periodically sent between the interlocking status monitoring module 13 of the controller 1 and the external control system 5 to indicate the system's operating status. The external control system 5 periodically sends a question-and-answer signal to the interlocking status monitoring circuit; this question-and-answer signal is the heartbeat signal. If the monitoring signal normally feeds back the interlocking status through the heartbeat feedback signal, the external control system 5 can update the interlocking status normally. The interlocking status refers to the overall working status of the device acting as the actuator 2; that is, through the heartbeat signal generated by the interlocking status monitoring module 13, the external control system 5 can know whether the device is operating normally or is being safely interlocked. Therefore, the overall system can be represented by two states: "normal operation" and "interlocked". If the monitoring signal fails to properly report the interlocked status through the heartbeat feedback signal, the external control system 5 can promptly identify the monitoring program fault and perform timely maintenance. Therefore, compared to conventional methods, the heartbeat signal can avoid situations where changes in equipment operating status occur due to program freezes, communication interruptions, or other reasons, resulting in the status signal not being updated and thus not being detected in time. In the accelerator field, multiple devices need to operate collaboratively, often requiring the integration of all device signals into a single control room for convenient operation. However, with numerous signals after integration, occasional abnormal status updates are easily overlooked, making it difficult to find the specific cause during fault diagnosis, thereby interfering with accelerator debugging and operation. Periodically feeding back the equipment interlocked status to the external system via the heartbeat signal facilitates timely confirmation of the equipment's operating status, contributing to the stable operation of the entire system and the diagnosis of occasional faults, and is more suitable for large-scale integrated systems like accelerators. For example, the heartbeat signal and heartbeat feedback signal can use the Modbus TCP communication protocol for communication, but any other communication method can also be used, which will not be elaborated here.

[0047] Based on the same inventive concept, this invention provides a controller for use in the aforementioned control system with optical port interlocking protection function. Specific details are as described in the detailed embodiments of the control system with optical port interlocking protection function, and will not be repeated here.

[0048] Based on the same inventive concept, the present invention also provides an accelerator, which includes at least one control system with optical port interlock protection function as described above.

[0049] For example, such as Figure 5 As shown, the actuator device used in the control system with optical port interlock protection function described here is a power source system. It employs the aforementioned control system with optical port interlock protection function for power source control. The power source includes a solid-state amplifier (SSA) 22 and a radio frequency (RF) signal source (not shown in the figure). The actuator is located within the power source. Its first connection terminal is connected to the RF signal source to receive the RF excitation signal. Its second connection terminal is connected to the solid-state amplifier 22. The actuator's control terminal receives the enable signal and enables the actuator based on the enable signal. The solid-state amplifier 22 amplifies the RF excitation signal and outputs the RF signal RF OUT. The entire system can be configured with only one interlock optical signal, which is distributed to multiple controllers of the control system with optical port interlock protection function. Each corresponding device is used as an actuator, thus enabling control of multiple devices. Each controller can receive one or more interlock optical signals, improving system flexibility.

[0050] This invention provides a control system, controller, and accelerator with optical port interlock protection function, which have the following beneficial effects: It can be connected to multiple external interlocking systems at the same time, operate in the complex electromagnetic environment of the accelerator field, avoid the phenomenon of false triggering caused by electromagnetic interference of traditional electrical signals, meet the safety interlocking requirements of accelerators, and can be widely used in various equipment in accelerator-related fields.

[0051] By connecting multiple external interlocking systems through the controller's optical interface, the safety interlocking of multiple accelerator systems can be controlled in a unified manner. At the same time, the safety interlocking information of external safety interlocking systems can be transmitted through optical signals, reducing the impact of the electromagnetic environment on the safety interlocking process and improving the stability and reliability of the equipment.

[0052] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A control system with optical port interlock protection function, characterized in that, include: The controller, actuator, at least one external interlocking system, and electromagnetic shielding enclosure; wherein, The controller and the actuator are disposed inside the electromagnetic shielding housing. The controller is provided with at least one optical interface and receives interlocking optical signals from the external interlocking system through optical fibers connected to each optical interface. The controller is connected to the actuator through an electrical signal transmission line and is used to output a working enable signal to the control terminal of the actuator according to the interlocking optical signal. The actuator is connected to the device and is used to control the working state of the device according to the working enable signal.

2. The control system with optical port interlock protection function according to claim 1, characterized in that, The controller also includes an interlocking circuit; wherein... The optical interface is located on the electromagnetic shielding shell of the controller. An optical fiber is inserted into the outer end of the optical interface, and the inner end of the optical interface is connected to the interlocking circuit. It is used to receive the interlocking optical signal through the optical fiber when the optical fiber is inserted, and to convert the optical signal into a logic level signal and then output the logic level signal to the interlocking circuit. The interlocking circuit is used to connect to the actuator and to output the working enable signal to the actuator when the logic level signal is received.

3. The control system with optical port interlock protection function according to claim 2, characterized in that, It also includes an external control system, and the controller further includes an interlocking status monitoring module. The detection end of the interlocking status monitoring module is connected to the interlocking circuit. The interlocking status monitoring module is connected to the external control system and is used to collect and store the status signals in the interlocking circuit. When the external control system sends a heartbeat signal, it outputs a heartbeat feedback signal to the external control system based on the status signal.

4. The control system with optical port interlock protection function according to claim 3, characterized in that, The controller includes a first optical interface, and the interlocking circuit includes a multi-terminal interlocking logic gate, an amplification unit, a level signal conversion unit, and a signal enable unit; wherein, the first input terminal of the multi-terminal interlocking logic gate is connected to a standard level voltage, the second input terminal of the multi-terminal interlocking logic gate is connected to the inner end of the first optical interface, and the output terminal of the multi-terminal interlocking logic gate is connected to the control terminal of the amplification unit; The signal output terminal of the amplification unit is connected to the level signal conversion unit and the signal enable unit respectively. The amplification unit outputs intermediate signals to the level signal conversion unit and the signal enable unit respectively according to the logic level signal output by the multi-terminal interlocking logic gate. The level signal conversion unit is connected to the interlocking status monitoring module and is used to output the status signal to the interlocking status monitoring module according to the intermediate signal; The signal enable unit is connected to the actuator and is used to output the working enable signal to the actuator according to the intermediate signal.

5. The control system with optical port interlock protection function according to claim 3, characterized in that, The controller includes at least one optical interface, and the interlocking circuit includes: a multi-terminal interlocking logic gate, an amplification unit, a level signal conversion unit, and a signal enable unit; wherein, the detection terminal of the multi-terminal interlocking logic gate is connected to the inner terminal of each optical interface, and the output terminal of the multi-terminal interlocking logic gate is connected to the control terminal of the amplification unit. The signal output terminal of the amplification unit is connected to the level signal conversion unit and the signal enable unit respectively. The amplification unit outputs intermediate signals to the level signal conversion unit and the signal enable unit respectively according to the logic level signal output by the multi-terminal interlocking logic gate. The level signal conversion unit is connected to the interlocking status monitoring module and is used to output the status signal to the interlocking status monitoring module according to the intermediate signal; The signal enable unit is connected to the actuator and is used to output the working enable signal to the actuator according to the intermediate signal.

6. The control system with optical port interlock protection function according to claim 4 or 5, characterized in that, The amplification unit includes a first switching transistor. The control terminal of the first switching transistor is connected to the output terminal of the multi-terminal interlocking logic gate. The first terminal of the first switching transistor is connected to the operating voltage and is connected to the level signal conversion unit and the signal enable unit. The other terminal of the first switching transistor is grounded.

7. The control system with optical port interlock protection function according to claim 5, characterized in that, The multi-terminal interlocking logic gate is a multi-terminal AND gate or a multi-terminal OR gate.

8. The control system with optical port interlock protection function according to claim 6, characterized in that, The first switching transistor is a bipolar transistor, and the level signal conversion unit is an analog-to-digital converter.

9. A controller, characterized in that, The controller is used in the control system with optical port interlock protection function as described in any one of claims 1-8.

10. An accelerator, characterized in that, It includes at least one control system with optical port interlock protection function as described in any one of claims 1-8.

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