CN109474366B - Synchronous timing trigger system and method applied to particle accelerator - Google Patents

Abstract

The invention provides a synchronous timing trigger system applied to a particle accelerator, which comprises: an instance generation system for indexing an instance file from the database according to the instance file number and outputting an instance light signal according to the instance file; a case transmission system for transmitting case optical signals; the case receiving/interpreting device is used for receiving the case optical signal and converting the case optical signal into the case code, comparing the case code with the trigger case code stored by the case receiving/interpreting device, and if the case codes are consistent, generating a trigger signal or level to trigger the equipment. The system adopts a PXIe/PXI industrial personal computer + case output board card hardware scheme, solves the problem of insufficient computing function and storage resources of the system on chip, and improves the control precision and speed of the system; data interaction is carried out between the controller and the case output board card through a high-speed backboard bus, so that the transmission speed of data is ensured, and the real-time performance, the reliability and the synchronism of the system are improved; the method can provide multi-client access and solve the problem of communication port and resource conflict.

Description

Synchronous timing trigger system and method applied to particle accelerator

technical field

The present invention relates to the technical field of tumor radiation therapy, in particular to a synchronous timing triggering system and method applied to a particle accelerator.

Background technique

The medical heavy ion accelerator is an important component of the medical heavy ion treatment device. The object controlled by the accelerator is the charged particles running at a high speed close to the speed of light in the vacuum tube. In the process of medical heavy ion therapy, all the devices that need to be synchronized in the accelerator and the treatment terminal are required to run synchronously with a precise time reference. Command and dispatch, run synchronously with strict cycles and timings, to generate the particle beams required for treatment.

At present, the synchronous timing trigger system of many accelerators adopts an event timing system based on Field Programmable Gate Array (FPGA) technology. The document "Digital Pulse Power Synchronous Timing Trigger System" (Patent No.: 201220694215.4) discloses an event timing system. The digital pulse power synchronous timing trigger system based on FPGA technology is characterized by a system-on-a-programmable-chip (SOPC) with field programmable gate array as the hardware as the trigger source server of the synchronous timing trigger system. The control computer uses the software interface to organize the trigger code and delay data, and download it to the trigger source server through the network. The trigger source server generates a series of time-based 32Bit trigger code pulses according to the received parameters, and transmits these trigger codes synchronously to all digital pulse power supplies that need to work synchronously through the fan-out equipment and optical fiber transmission system. . The system can realize ion accelerator digital pulse power supply or multiple digital pulse power supplies in related industrial fields to start synchronously according to the set time sequence or group timing synchronous start control, which meets the requirements of digital pulse power supply in related fields for timing synchronous start under remote control mode , but the system has some shortcomings: First, the system uses the FPGA-based programmable system-on-chip as the trigger source server, and the function and performance of the system are limited by the performance and resources of the system-on-chip, which is not conducive to system expansion, upgrade and optimization; Second, the system and the host computer (control computer) exchange data with the TCP/IP communication protocol through the network chip and network port of the system-on-chip. The data transmission and real-time performance are not high, and the transmission speed is slow; The system is connected with other systems based on the TCP/IP communication protocol. When multiple users interact with it, there are problems such as communication ports and resource conflicts.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

In view of the existing technical problems, the present invention provides a synchronous timing triggering system and method applied to a particle accelerator, which is used to at least partially solve the above technical problems.

(2) Technical solutions

The present invention provides a synchronous timing triggering system applied to particle accelerators. The system can be connected to at least one client. The client and the synchronous timing triggering system use a client/server mode for data interaction. The synchronous timing triggering system includes: :

The case generation system is composed of a PXIe/PXI industrial computer and an instance output board. The PXIe/PXI industrial computer is used to index the case file from the database according to the case file number. The case output board outputs the case optical signal according to the case file. The PXI industrial computer and the case output board carry out data transmission through the PXIe/PXI high-speed backplane bus;

an event transmission system for transmitting the event optical signal;

The case receiver/interpreter is used to receive the case light signal and convert it into case code, and compare the converted case code with the trigger case code stored in the case receiver/decoder. If the two case codes are exactly the same, a trigger signal will be generated. or level to trigger devices in the particle accelerator that need to be synchronized.

The case transmission system is connected to at least one case receiver/interpreter, each device that needs to be synchronized has a corresponding case receiver/interpreter, and the case transmission system fan-out and distributes case optical signals into multiple case optical signals , and passed to the instance receiver/interpreter corresponding to each device that needs to be synchronized.

Optionally, the PXIe/PXI industrial computer is provided with the functions of case editing interface, case control interface, control logic processing and board driver. The case editing interface is used to write case files and save them in the database; the case control interface is used to select Case file number and set parameters; control logic processing is used to index case files from database according to case file number; board driver is used to drive case output board to output case light signal according to case file.

Optionally, the case transmission system is a tree structure formed by a plurality of fan-outs connected by plastic optical fibers, and each fan-out includes at least one output interface, so that the case optical signal can be simultaneously transmitted to a plurality of case receivers/decoders. translator.

Optionally, the case file includes case name, delay time and repetition times. The case name is used to specify the triggering device; the delay time is used to limit the interval time from the end of the last case output to the start of this output; the repetition times is used to limit the The number of times the current case is repeatedly output.

Optionally, the case receiver/interpreter includes a network interface and an optical signal interface, the network interface is used to load the trigger case code that the device that needs to be synchronized must respond to from the database to the case receiver/interpreter; the optical signal interface is used to receive all the data. Describe the case light signal.

Optionally, a standard industrial OPC-UA communication protocol is used to exchange information between the client and the synchronous timing trigger system, so as to provide multi-client access.

Optionally, the lengths of the plastic optical fibers connected between the multiple fan-outs are equal, so that the transmission distances of the case optical signals are equal.

Optionally, the PXI industrial computer is provided with a plurality of peripheral slots, and the case output board is inserted into one of the slots, so as to expand the function of the synchronous timing trigger system later.

Optionally, the case output board includes: an optical signal output port for outputting case optical signals; and a debugging interface for debugging the performance of the case output board.

Another aspect of the present invention provides a synchronous timing trigger method, comprising: a PXI industrial computer indexes an instance file from a database according to an instance file number; an instance output board receives the instance file through the PXI high-speed backplane bus, and outputs the instance light according to the instance file Signal; the case transmission system fan-out and distributes the case optical signal into multiple case light signals; the case receiver/interpreter corresponding to each device that needs to be synchronized receives the case light signal and converts it into an case code, and converts the converted case code Compared with the trigger event code stored in the event receiver/interpreter, if the two event codes are completely consistent, a trigger signal or level will be generated to trigger the device in the particle accelerator that needs to be synchronized.

(3) Beneficial effects

The present invention provides a synchronous timing trigger system and method applied to a particle accelerator, including the beneficial effects:

1. The system adopts the hardware solution of PXI industrial computer + PXI plug-in case output board. It has abundant storage resources and computing resources, which can easily analyze, process and store data, and solve the above-mentioned system-on-chip computing functions With the problem of insufficient storage resources, the control precision and speed of the system are effectively improved.

2. The data exchange between the controller and the case output board in the system is carried out through the PXI bus, which ensures the data transmission speed, and the real-time, reliability and synchronization of the system are effectively improved. At the same time, the PXI chassis expansion slot provides Redundant slots for later expansion of system functions.

3. The system can provide multi-client access, and adopts the standard industrial communication protocol OPC-UA, which solves the problem of communication ports and resource conflicts, and at the same time ensures the standardization and standardization of communication protocols.

4. The application of virtual instrumentation technology effectively reduces the cycle of hardware research and development, improves the reliability and maintainability of the system, avoids the difficulty of system upgrade, and reduces the difficulty of system operation.

Description of drawings

FIG. 1 is a schematic structural diagram of a synchronization timing trigger system according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an event generation system of a synchronous timing trigger system according to an embodiment of the present invention.

3 is a schematic structural diagram of an instance transmission system of a synchronous timing trigger system according to an embodiment of the present invention

FIG. 4 is a schematic diagram of the composition structure of the control software corresponding to the synchronization timing trigger system according to the embodiment of the present invention.

FIG. 5 is a flowchart of a method for triggering synchronization timing according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

An embodiment of the present invention provides a particle accelerator synchronous timing trigger system, the system can be connected to at least one client, and can provide multi-client access, the structure of which is shown in FIG. 1 . The system can be used in a medical heavy ion therapy device. During the treatment process of the medical heavy ion therapy device, the accelerator and all the equipment that needs to be synchronized at the treatment terminal are triggered synchronously and run synchronously with a precise time reference to generate the particle beam required for the treatment. Its structure includes an event generation system, an event transmission system, and an event receiver/interpreter, wherein the event transmission system is connected to at least one event receiver/interpreter, and each device that needs to run has a corresponding event receiver/interpreter. , the event transmission system fans out and distributes the event optical signal generated by the event occurrence system into multiple event optical signals, and simultaneously transmits it to the event receiver/interpreter corresponding to each device that needs to be synchronized. The details are described below.

The case generation system is used for indexing case files from the database according to the case file numbers, and then outputting case light signals according to the case files.

The case generation system is composed of PXIe/PXI industrial computer and case output board, and the PXIe/PXI industrial computer has corresponding control software. The PXIe/PXI industrial computer is the server of the synchronous timing trigger system, which includes the PXIe/PXI control chassis, the PXIe/PXI backplane bus, the system controller and the case output board, as shown in Figure 2. When the synchronous timing trigger needs to trigger the corresponding equipment uniformly, the physical personnel sends the case file number, sets the operating parameters and loading request through the upper computer (central monitoring client), and the system controller runs the control software, according to the case file number in the database. The case file corresponding to the case file number is automatically indexed in the PXIe/PXI backplane bus, and the indexed case file and operating parameters are loaded into the on-board RAM of the case output board through the PXIe/PXI backplane bus. The case output board will output 32Bit case light signal in strict accordance with the case file and operating parameters after receiving the start command from the host computer. At the same time, the real-time working status of the case output board will be transmitted to the PXIe/PXI industrial computer in real time through the backplane bus, and displayed through the interface, that is, the case output board and the controller are connected through the high-speed backplane bus provided by the PXIe/PXI chassis. Data interaction.

Specifically, the PXIe/PXI industrial computer is equipped with functions such as case editing interface, case control interface, control logic processing, and board driver. The case file is written and saved in the database through the case editing interface, and the currently needed case is selected through the case control interface. The file number, through the control logic processing, the case file corresponding to the case file number is automatically indexed in the database according to the case file number, and then the indexed case file and operating parameters are loaded to the case output board through the PXIe/PXI backplane bus. loaded into RAM.

Among them, the case file is prepared according to the beam energy and treatment line required for treatment. Different treatment lines and energy have corresponding case files. Therefore, the physicist will edit all beams in advance through physical calculation according to actual needs. Case files corresponding to flow energy and treatment lines are stored in the database. When the case files are actually needed, they are indexed from the database according to the case file numbers and loaded into the onboard RAM of the case output board.

A case file consists of case name, delay time and repetition times, as shown in Table 1.

Table 1

The case name is represented by an 8-bit strictly defined hexadecimal number in the format: "C0XXYYZZ". The case name is divided into three segments, "C0" is the start byte, "XX", "YYZZ" represent different front-end devices, Accelerating energy and corresponding treatment lines.

The delay time represents the relative time interval from the end of the last case output to the start of the current case output, and the delay precision of the case board in the embodiment of the present invention is 10 nanoseconds.

The number of repetitions indicates the number of times the currently selected case is repeatedly output. If the times is 1, the current case ends and the next case output starts automatically; if it is greater than 1, the current case output and delay time are cycled until the set times are reached.

Core^TM2 Duo T7500 2.2GHz，前端总线：800MHz，最大支持4GB SO-DIMM内存，前面板上提供两个具有LED显示的千兆以太网RJ-45网络端口，4个USB2.0端口，320GB SATA硬盘。该PXI机箱符合CPCI机械规范，具有空气冷却装置，符合工业环境测试(温度、湿度、震动和冲击试验)等要求，保证了本系统的EMC及电气安全特性，以及系统的易集成性。The PXIe/PXI industrial control chassis is provided with a system slot and multiple peripheral slots, wherein the multiple peripheral slots include a star-triggered controller slot. The system controller is inserted into the system slot of the PXIe/PXI industrial computer, and the case output board is inserted into a device slot except the star trigger controller slot. The purpose of setting up multiple slots is to provide redundant insertion. slot for later expansion of PXIe/PXI industrial computer functions. In the embodiment of the present invention, the PXI industrial control chassis adopts a 3U eight-slot PXI chassis of ADLINK company PXIS-2630 model, supports 3U PXI and Compact PCI modules, is compatible with the PXIRev.2.2 specification, and provides one system slot and seven Peripheral slot, system controller adopts ADLINK PXI-3950 type controller, controller CPU:

Core ^TM 2 Duo T7500 2.2GHz, FSB: 800MHz, maximum support 4GB SO-DIMM memory, two Gigabit Ethernet RJ-45 network ports with LED display on the front panel, 4 USB2.0 ports, 320GB SATA hard disk. The PXI chassis complies with the CPCI mechanical specification, has an air cooling device, and meets the requirements of industrial environmental tests (temperature, humidity, vibration and shock tests), etc., which ensures the EMC and electrical safety characteristics of the system, as well as the easy integration of the system.

The case output board is a board inserted in the PXIe/PXI bus slot, occupying one peripheral slot, designed based on FPGA technology, including one optical signal input port (R1), two signal transmission ports (T1, T2), a standard TTL signal input port and a JTAG debug port, as shown in Figure 2.

The two optical signal output interfaces (T1, T2) of the case output board are used to output the case optical signal. The interface type is T-1522Z, which is connected to the fan-out device of the case transmission system through the optical fiber. At the same time, in order to facilitate the function expansion of the case generation system, the case output board also has an optical signal input interface (R1), the interface type is R-2522Z, the TTL signal input interface can accept external TTL level signals, and the JTAG debug interface is mainly used for Example output board performance debugging. The wavelength of the case optical signal output by the case output board is 660nm, each case is composed of 32Bit binary numbers, the width of each bit is 2.56us, the baud rate is 390625bit/s, the byte order is big endian mode, and the FPGA memory is 256MB. , the bus is a standard PXI bus. The color of the output optical signal is visible red light, and it can be judged that the bit is "1" or "0" by the flashing red light of the optical signal output interface. When the bit is "1", the optical signal output interface flashes red light; When the bit is "0", the light-emitting interface does not flash and is in the "light-off" state. When the case output board is stuck in the "idle" state, the light-emitting interface is always in the "light-off" state.

An instance transmission system for transmitting the instance optical signal.

The case transmission system of the embodiment of the present invention adopts optical fiber technology, and a tree-structure transmission network formed by connecting multiple fan-outs and plastic optical fibers is responsible for fan-out and distributing the case optical signal of the case occurrence system to the equipment that needs to be triggered. Its structure As shown in Figure 3.

The first-level fan-out is located at the top of the tree structure, and is responsible for connecting the event optical signal output by the event-generating system to the second-level fan-out equipment located in different areas of the treatment device through an equal-length plastic optical fiber. The optical fiber is connected to the third-level fan-out device, and the third-level fan-out device is connected to the fourth-level fan-out device through the plastic optical fiber. Signal transmission and distribution functions.

The fanout includes at least one output interface, so that the case optical signal can be simultaneously transmitted to multiple case receivers/interpreters. The fanout in the embodiment of the present invention adopts the ACFO model fanout developed by the Institute of Modern Physics, Chinese Academy of Sciences. Responsible for receiving the case optical signal and amplifying the power to expand the network transmission distance. At the same time, all nodes are concentrated on the node centered on it to realize the fan-out function. The transmission rate of the fanout to the signal is up to 1MBps, using red visible light, the wavelength is 660nm, the frequency is up to 1MHZ, and the rated working voltage is 20-24V (DC). The fanout provides RS485, RS232 and POF optical fiber standard interfaces, and at the same time has 9 optical fiber interfaces of the same type. By means of the internal circuit, it can realize the function of simultaneously distributing and downloading an input trigger pulse sequence to 9 devices at the same time. , that is, the fan-out function of signal 1 in and 9 out. At the same time, the shell is made of aluminum alloy, which is convenient for the installation and fixing of the equipment, and the shell is grounded, which improves the EMC and electrical safety performance of the equipment to a certain extent.

As the transmission medium of the case signal, plastic optical fiber has the characteristics of low signal loss, fast transmission speed, long transmission distance, strong anti-interference ability and light weight, which can effectively improve the real-time performance, synchronization and anti-interference of the system. At the same time, the transmission frequency of optical signals is much higher than the transmission frequency of radio waves, and the strong electric interference is less, which improves the EMC and electrical safety performance of the system.

The case receiver/interpreter is used to receive the case light signal and convert it into case code, and compare the converted case code with the trigger case code stored in the case receiver/decoder. If the two case codes are exactly the same, a trigger signal will be generated. or level, a synchronization device is required in the trigger accelerator.

The case receiver/interpreter mainly includes case receiver/interpreter or intelligent controller. The smart controller refers to the device controller that has the function of case receiver and interpretation. The case receiver/interpreter is not equipped with case interpretation. External trigger device for functional device preparation. Because some of the devices that need to be synchronized have their own intelligent controllers with case receiving/interpreting functions, which are equivalent to their own case receiving/interpreting devices, but some devices do not have case receiving/interpreting functions. Therefore, for A case receiver/interpreter (external trigger device) is set for a device without case interpretation function. The case transmission system directly transmits the case light signal to those devices with case reception/interpretation function, and the equipment without case reception/interpretation receives the case light signal through an external case reception/interpreter.

The case receiver/interpreter has both a network interface and an optical signal interface. The network interface is used to receive the preloaded trigger case code and store it in the case receiver/interpreter RAM, and preload the trigger case code to the case receiver/interpreter. The purpose of the RAM is to set the trigger condition for the corresponding device to start running in advance. The optical signal interface is used to receive the case optical signal transmitted by the case transmission system. The purpose of receiving the optical signal is to determine when to trigger the case condition according to the preloaded case. Trigger the corresponding device. After receiving the case light signal, convert it into the corresponding case code, and compare the converted case code with the trigger case code stored in the case receiving/interpreting system. If the two case codes are exactly the same, the case receiving/interpreter outputs Transistor-Transistor Logic (TTL) triggers the level to the device that needs to operate and triggers the device. Since the event output system simultaneously transmits the event optical signal to the event receiver/interpreter corresponding to each device, each device is triggered in strict accordance with the timing of the event occurrence system triggering the event.

Examples of the embodiment of the present invention The receiver/interpreter provides an RJ45 network connector. Working frequency range: DC～2.5MHz, frequency stability: better than 10-7, frequency accuracy: better than 10ppm, amplitude range, gear 1: 0V～ 10V; gear 2: -10V～+10V can be set; harmonic distortion: better than 35dBc, clutter distortion: better than -55dBc, phase noise: -107dBc/Hz@10kHz, with arbitrary waveform channel self-check function, with Dual sampling channel self-test function.

The synchronous timing triggering system provided by the embodiment of the present invention has its own dependent control software, and the software adopts virtual instrumentation technology for system integration and development, so that the later improvement and function expansion of the system only need to update the relevant software design, and There is no need to change or redesign the hardware board, which effectively reduces the cycle of hardware research and development, improves the reliability and maintainability of the system, and avoids the difficulty of system upgrades. The control software includes server control software and case output board program, and the composition structure of the control software is shown in Figure 4.

The server control software, as the lower computer software (PXIe/PXI industrial computer is the synchronous timing trigger system server), is the bridge of information exchange between the upper computer (control computer such as the central monitoring client) and the case output board, mainly providing human-machine operation. The interface realizes the functions of protocol conversion, control logic processing, chain logic processing, OPC-UA variable release, case file editing and storage, and data transmission (related functions implemented by virtual instrument table technology). The operator edits and saves the case file through the human-computer interaction interface, sends the case control request command and monitors the real-time status of the case output board. At the same time, the server control software has set the debugging mode and the treatment mode. In the treatment mode, all editing and control functions of the server control software human-machine interface are locked, and can only be unlocked when the operation mode is switched to the debugging mode. As mentioned above, the server control software provides operators and engineers with a human interface for debugging, operation and maintenance, and acts as an OPC-UA Server to transmit key parameters and control commands through high-speed Ethernet in the form of OPC-UA variables. Released to realize the information exchange and data transmission between the synchronous timing trigger system, the accelerator central monitoring system and the treatment terminal control system.

The server control software is the core of the synchronous timing trigger system, using NI LABVIEW and Microsoft Visual Studio software as development tools, based on the C/S (Client/Server) architecture design, through the standard industrial OPC-UA protocol to communicate with the client interact. Through this design, the synchronous timing trigger can meet the needs of multi-client access, solve the problem of communication ports and resource conflicts when multi-users interact with them, ensure the standardization and standardization of communication protocols, and facilitate the communication between the system and the system. The seamless connection of other standard industrial control systems greatly shortens the system development cycle and improves the optionality of upgrading and replacing products. At the same time, the life cycle of the software is extended, making the entire system standard and open, which is conducive to system expansion and upgrade in the future.

The case output board program generates and outputs case light signals according to the control instructions and case files issued by the control software. At the same time, the real-time output state of the case output board is fed back to the server control software to realize the monitoring function of the operation state of the case output board.

Another aspect of the embodiments of the present invention provides a synchronization timing trigger method, including:

S1, the event occurrence system outputs the event optical signal according to the event file.

Specifically, the upper computer (central monitoring client, treatment terminal client) sends the case file number and loading request to the PXIe/PXI industrial computer, and the PXIe/PXI industrial computer automatically indexes the corresponding case file number in the database according to the case file number. the case file, and then load the indexed case file and operating parameters into the onboard RAM of the case output board through the high-speed backplane bus, and the case output board outputs the case light signal according to the case file;

S2, the instance transmission system fan-out and distributes the instance optical signal into a plurality of instance optical signals and outputs them simultaneously.

The case transmission system consists of a fan-out and a plastic optical fiber. The fan-out has multiple output interfaces. When the fan-out receives a case optical signal, its internal circuit outputs multiple optical signals identical to the case optical signal according to the case optical signal. case of light signals.

S3, the case receiver/interpreter generates a trigger signal or a level trigger device according to the case light signal.

The case receiver/interpreter corresponding to each device that needs to be triggered receives the case light signal, converts it into case code, and compares the case code with the trigger case code stored in the case receiver/interpreter. If the two case codes are exactly the same , then a trigger signal or level is generated to trigger the device.

To sum up, the embodiment of the present invention provides a synchronous timing triggering system, which can be used for synchronizing timing triggering of all the devices of the accelerator and the treatment terminal that need to be synchronized. The system adopts the hardware solution of PXIe/PXI industrial computer + PXIe/PXI plug-in case output board. It has abundant storage resources and computing resources, and can easily analyze, process and store data, and solve the aforementioned system-on-chip solutions. The problem of insufficient computing function and storage resources effectively improves the control accuracy and speed of the system; the application of virtual instrumentation technology effectively reduces the cycle of hardware research and development, improves the reliability and maintainability of the system, and avoids the difficulty of system upgrades ;In the system, the controller and the case output board exchange data through the PXIe/PXI bus, which ensures the data transmission speed, and the real-time, reliability and synchronization of the system are effectively improved. At the same time, the PXIe/PXI chassis expansion plug The slot provides redundant slots for later system function expansion; the system can provide multi-client access, and adopts the standard industrial communication protocol OPC-UA, which solves the problem of communication ports and resource conflicts, and ensures the standardization of communication protocols. with normalization.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in further detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A synchronous timing trigger system applied to a particle accelerator is characterized in that the synchronous timing trigger system can be connected with at least one client, the client and the synchronous timing trigger system perform data interaction in a client/server mode, and the synchronous timing trigger system comprises:

the case generation system comprises a PXIe/PXI industrial personal computer and a case output board card, wherein the PXIe/PXI industrial personal computer is used for indexing a case file from a database according to a case file number, the case output board card outputs a case optical signal according to the case file, and the PXIe/PXI industrial personal computer and the case output board card perform data transmission through a PXIe/PXI high-speed backboard bus;

a case transmission system for transmitting the case optical signal;

the case receiving/interpreting device is used for receiving the case optical signal, converting the case optical signal into a case code, comparing the converted case code with the trigger case code stored by the case receiving/interpreting device, and if the case codes are completely consistent with the trigger case code, generating a trigger signal or a level according to the time sequence of the case file to trigger equipment needing synchronization in the particle accelerator;

the instance transmission system is connected with at least one instance receiving/interpreter, the device needing synchronization in each particle accelerator is provided with the instance receiving/interpreter corresponding to the device needing synchronization, and the instance transmission system fans out and distributes the instance optical signal into a plurality of instance optical signals and simultaneously transmits the instance optical signals to the instance receiving/interpreter corresponding to each device needing synchronization.

2. The synchronous timing trigger system of claim 1, wherein the PXIe/PXI industrial personal computer is provided with a case editing interface, a case control interface, a control logic processing and board card driving functions,

the case editing interface is used for compiling the case file and storing the case file in a database;

the case control interface is used for selecting the case file number and setting parameters;

the control logic process is for indexing case files from a database according to the case file numbers;

the board driver is used for driving the case output board to output case optical signals according to the case file.

3. The synchronized timing trigger system of claim 1, wherein said case transmission system is a tree structure of a plurality of fanouts connected by plastic optical fibers, each of said fanouts including at least one output interface such that said case optical signals can be transmitted to a plurality of said case receivers/interpreters simultaneously.

4. The synchronized timing trigger system of claim 1 or 2, wherein said instance file includes an instance name, a delay time and a repetition number,

the instance name is used to specify a triggered device;

the delay time is used for limiting the interval time from the end of last instance output to the start of current output;

the repetition times are used for limiting the repeated output times of the current case.

5. The synchronized timing trigger system of claim 1, wherein said instance receiver/interpreter includes a network interface and an optical signal interface,

the network interface is used for loading a trigger case code to which the equipment needing synchronization has to respond from the database to the case receiver/interpreter;

the optical signal interface is used for receiving the instance optical signal.

6. The synchronized timing trigger system of claim 1, wherein said client and said synchronized timing trigger system use standard industry communication protocols for information interaction to provide multi-client access.

7. The synchronized timing and firing system of claim 3, wherein said plastic optical fibers connecting between said plurality of fanouts are of equal length to equalize the transmission distances of said instance optical signals.

8. The synchronous timing trigger system of claim 1, wherein the PXIe/PXI industrial personal computer is provided with a plurality of peripheral slots, and the instance output board card is inserted into one of the slots.

9. A synchronous timing triggering method applied to a particle accelerator is characterized by comprising the following steps:

the PXIe/PXI industrial personal computer indexes the case file from the database according to the case file number;

the case output board card receives the case file through a PXIe/PXI high-speed backboard bus and outputs a case optical signal according to the case file;

the case transmission system fans out and distributes the case optical signals into a plurality of case optical signals;

and the case receiving/interpreting device corresponding to each device needing to be triggered receives the case optical signal and converts the case optical signal into a case code, the converted case code is compared with the triggering case code stored by the case receiving/interpreting device, and if the case codes are completely consistent with the triggering case code stored by the case receiving/interpreting device, a triggering signal or a level is generated according to the time sequence of the case file to trigger the device.

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