Timing synchronization control system for SPERF devices
By introducing a trigger source and a delay generator into the SPERF device and combining them with the TCP/IP protocol, the timing synchronization control of each sub-device was realized, solving the problem of high synchronization requirements and meeting the synchronization requirements in the high-level trigger mode.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2023-05-05
- Publication Date
- 2026-07-03
Smart Images
Figure CN116566532B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of space plasma environment simulation and research technology. Background Technology
[0002] The SPERF (Space Plasma Environment Simulation and Research Facility) operates in a pre-triggered burst mode, requiring an effective experimental time of less than or equal to 100 ms. Compared to typical plasma devices, the SPERF's near-Earth space plasma environment simulation chamber employs a high-level triggering mode in addition to pulse triggering for each sub-device. High synchronization is crucial during operation. Therefore, to meet experimental requirements and accommodate the different triggering modes of each sub-device, the triggering sequence and operating time of each sub-device need to be adjusted. Summary of the Invention
[0003] This invention is to meet the time requirements of inter-plasma environment simulation experiments and the synchronization requirements of triggering modes of various sub-devices, and now provides a timing synchronization control system for the SPERF device.
[0004] The timing and synchronization control system for the SPERF device includes trigger sources and delay generators A to F.
[0005] The trigger sources are used to set the delay time and pulse width of the trigger output signals of delay generators A through F, respectively.
[0006] Delay generator A is used to set the delay times of the magnet power supply, cold cathode source, and plasma gun respectively.
[0007] Delay generators B and C are both used to set the delay time of the data acquisition system.
[0008] Delay generators D and E are both used to set the delay time and pulse width time of the inflation system.
[0009] The delay generator F is used to set the delay time and pulse width of the 2.45G ECR source.
[0010] Furthermore, the trigger sources and delay generators D to F mentioned above are all DG645 long pulse width delay generators, and delay generators A to C are all DG4301 short pulse width delay generators.
[0011] Furthermore, the pulse width time range of the aforementioned DG4301 short pulse width delay generator is 10μs to 100μs.
[0012] Furthermore, the aforementioned triggering source includes 6 trigger output channels, delay generator A includes 3 trigger output channels, delay generators B and C each include 32 trigger output channels, delay generators D and E each include 4 trigger output channels, delay generator F includes 1 trigger output channel, the acquisition system includes 57 trigger input channels, and the inflation system includes 8 trigger input channels.
[0013] Furthermore, the time zero point is defined as the time point when the trigger source receives the trigger signal.
[0014] When the following times exist:
[0015] The delay times of the six trigger output channels of the trigger source are A, B, C, D, E, and F, respectively.
[0016] The delay times of the three trigger output channels of delay generator A are A1, A2, and A3, respectively.
[0017] The delay times of the 32 trigger output channels of delay generator B are B1, B2, ..., B... 32 ,
[0018] The delay times of the 32 trigger output channels of delay generator C are C1, C2, ..., C... 32 ,
[0019] The delay times of the four trigger output channels of delay generator D are D1, D2, D3, and D4, and the pulse widths are DH1, DH2, DH3, and DH4, respectively.
[0020] The delay times of the four trigger output channels of delay generator E are E1, E2, E3, and E4, and the pulse widths are EH1, EH2, EH3, and EH4, respectively.
[0021] The delay time of the 1st trigger output channel of the delay generator F is F1, and the pulse width is FH1;
[0022] Then we have:
[0023] The trigger time of the magnet power supply is A+A1.
[0024] The triggering time of the cold cathode source is A+A2.
[0025] The plasma gun's trigger time is A+A3.
[0026] The trigger times of the 1st to 32nd trigger input channels of the acquisition system are (B+B1), ..., (B+B1), respectively. 32 The trigger times for the 33rd to 57th trigger input channels are (C+C1), ..., (C+C1), respectively. 25 ),
[0027] The trigger times of the first to fourth trigger input channels of the inflation system are (D+D1), ..., (D+D4), and their working times are DH1, DH2, DH3, and DH4, respectively. The trigger times of the fifth to eighth trigger input channels are (E+E1), ..., (E+E4), and their working times are EH1, EH2, EH3, and EH4, respectively.
[0028] The trigger time of the 2.45G ECR source is F+F1, and the working time is FH1.
[0029] Furthermore, the aforementioned trigger sources and delay generators A through F are all connected to the input / output controller via the TCP / IP protocol.
[0030] The input / output controller is used to set the delay time and pulse width of the trigger source and delay generators A to F respectively, and is also used to trigger the output of the trigger source.
[0031] The timing synchronization control system for the SPERF device described in this invention adjusts the start time and duration of operation of the sub-devices by setting the delay time and pulse width time of the sub-devices through a delay generator, thereby meeting the timing synchronization triggering and timing control requirements of each sub-device in the space plasma environment simulation chamber. Attached Figure Description
[0032] Figure 1 A schematic diagram of the timing synchronization control of an existing near-Earth space plasma environment simulation chamber;
[0033] Figure 2 This is a schematic diagram of the timing synchronization control system for the SPERF device described in this invention;
[0034] Figure 3 This is a schematic diagram of the adjustment of a timing synchronization control system. Detailed Implementation
[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.
[0036] The timing synchronization control system of the near-Earth space plasma environment simulation chamber in the SPERF device, such as... Figure 1 As shown, the triggering modes of each sub-device are divided into two types: pulse triggering mode and high-level triggering mode.
[0037] Pulse-triggered sub-devices include: magnet power supply, cold cathode source, plasma gun and acquisition system. In application, the sub-device is triggered by detecting the rising signal. Therefore, in operation, only a pulse width greater than 10us is required to trigger the sub-device. Thus, the only synchronization requirement for such sub-devices is timing control, that is, controlling the pulse emission time.
[0038] Sub-devices triggered by high-level signals include a 2.45G ECR (Electron Cyclotron Resonance) source and a gas filling system. The devices do not work when the level is low and work when the level is high. Therefore, the synchronization requirements of such sub-devices are not only timing control, but also working time control. It is necessary to control both the pulse emission time and the pulse width.
[0039] This implementation method provides the following solution to the requirements of the above sub-devices, for reference. Figure 2 This embodiment describes a timing synchronization control system for a SPERF device, comprising trigger sources and delay generators A through F. Trigger sources and delay generators D through F are all DG645 long-pulse-width delay generators, while delay generators A through C are all DG4301 short-pulse-width delay generators. The pulse width of the DG4301 short-pulse-width delay generator ranges from 10 μs to 100 μs. Trigger sources and delay generators A through F are all connected to the input / output controller via TCP / IP protocol.
[0040] The trigger source (DG645 long pulse width delay generator ZERO) includes 6 trigger output channels, used to set the delay time and pulse width of the trigger output signals of delay generators A to F respectively. Specifically, the trigger source unifies the pulse width of the 6 trigger channels to 10μs, which serves as the time reference for delay generators A to F.
[0041] Delay generator A includes three trigger output channels, used to set the delay times of the magnet power supply, cold cathode source, and plasma gun respectively. When delay generator A receives a trigger pulse from the trigger source, it triggers the magnet power supply, cold cathode source, and plasma gun respectively, unifying the pulse width of the three trigger channels to 10μs to control the operating sequence of the magnet power supply, cold cathode source, and plasma gun.
[0042] Both delay generator B and delay generator C include 32 trigger output channels, and the acquisition system includes 57 trigger input channels. Delay generators B and C jointly set the delay time of the acquisition system. When delay generators B and C receive trigger pulses from the trigger source, they unify the width of their respective 32 trigger pulses to 10μs to control the acquisition timing of the acquisition card.
[0043] Both delay generators D and E include 4 trigger output channels, while the inflation system includes 8 trigger input channels. Delay generators D and E jointly set the delay time and pulse width of the inflation system. Upon receiving a trigger pulse from the trigger source, delay generators D and E respectively set the delay time and pulse width of their 4 trigger output channels to control the start time and duration of operation of the 8 piezoelectric ceramic valves in the inflation system.
[0044] The delay generator F includes one trigger output channel for setting the delay time and pulse width of the 2.45G ECR source. When the delay generator F receives a trigger pulse from the trigger source, it sets the delay time and pulse width of its trigger output to control the start time and duration of the 2.45G ECR source's operation.
[0045] like Figure 3 As shown, the trigger source and delay generators A to F are connected to the input / output controller via the TCP / IP protocol. The input / output controller (EPICS IOC) is used to set the delay time and pulse width of the trigger source and delay generators A to F respectively, and is also used to trigger the output of the trigger source. The delay time and pulse width of the delay generators can be set in the interactive interface (EPICS OPI).
[0046] Specifically, in practical applications, this implementation takes the receipt of the trigger signal by the trigger source as the zero point. This occurs when the following times exist:
[0047] The delay times of the six trigger output channels of the trigger source are A, B, C, D, E, and F, respectively.
[0048] The delay times of the three trigger output channels of the delay generator A are A1, A2, and A3, respectively.
[0049] The delay times of the 32 trigger output channels of the delay generator B are B1, B2, ..., B... 32 ,
[0050] The delay times of the 32 trigger output channels of the delay generator C are C1, C2, ..., C... 32 ,
[0051] The delay times of the four trigger output channels of the delay generator D are D1, D2, D3, and D4, and the pulse widths are DH1, DH2, DH3, and DH4, respectively.
[0052] The delay times of the four trigger output channels of the delay generator E are E1, E2, E3, and E4, respectively, and the pulse widths are EH1, EH2, EH3, and EH4, respectively.
[0053] The delay time of the one-channel trigger output of the delay generator F is F1, and the pulse width is FH1;
[0054] Then we have:
[0055] The trigger time of the magnet power supply is A+A1.
[0056] The triggering time of the cold cathode source is A+A2.
[0057] The triggering time of the plasma gun is A+A3.
[0058] The trigger times of the first to 32nd trigger input channels of the acquisition system are (B+B1), ..., (B+B1), respectively. 32 The trigger times for the 33rd to 57th trigger input channels are (C+C1), ..., (C+C1), respectively. 25 ),
[0059] The trigger times of the first to fourth trigger input channels of the inflation system are (D+D1), ..., (D+D4), and their working times are DH1, DH2, DH3, and DH4, respectively. The trigger times of the fifth to eighth trigger input channels are (E+E1), ..., (E+E4), and their working times are EH1, EH2, EH3, and EH4, respectively.
[0060] The trigger time of the 2.45G ECR source is F+F1, and the working time is FH1.
[0061] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.
Claims
1. A timing synchronization control system for a SPERF device, characterized in that, Includes trigger source and delay generators A~F, The trigger source is used to set the delay time and pulse width of the trigger output signals of delay generators A to F respectively. Delay generator A is used to set the delay times of the magnet power supply, cold cathode source, and plasma gun respectively. Delay generators B and C are both used to set the delay time of the data acquisition system. Delay generators D and E are both used to set the delay time and pulse width time of the inflation system. Delay generator F is used to set the delay time and pulse width of the 2.45G ECR source; The trigger source and delay generators D~F are all DG645 long pulse width delay generators. Delay generators A through C are all DG4301 short pulse width delay generators; The trigger source includes 6 trigger output channels. The delay generator A includes 3 trigger output channels. Both delay generator B and delay generator C include 32 trigger output channels. Both delay generator D and delay generator E include 4 trigger output channels. The delay generator F includes one trigger output channel. The acquisition system includes 57 trigger input channels, and the inflation system includes 8 trigger input channels.
2. The timing synchronization control system for the SPERF device according to claim 1, characterized in that, The pulse width and time range of the DG4301 short pulse width delay generator is: .
3. The timing synchronization control system for the SPERF device according to claim 1, characterized in that, The time zero point is defined as the time point when the trigger source receives the trigger signal. When the following times exist: The delay times of the six trigger output channels of the trigger source are respectively , , , , , , The delay times of the three trigger output channels of the delay generator A are respectively , , , The delay times of the 32 trigger output channels of the delay generator B are respectively , The delay times of the 32 trigger output channels of the delay generator C are respectively , The delay times of the four trigger output channels of the delay generator D are respectively The pulse widths are respectively , , , , The delay times of the four trigger output channels of the delay generator E are as follows: The pulse widths are respectively , , , , The delay time of the one-channel trigger output of the delay generator F is Pulse width is ; Then we have: The trigger time of the magnet power supply is , The triggering time of the cold cathode source is , The trigger time of the plasma gun is , The trigger times of the 1st to 32nd trigger input channels of the acquisition system are respectively The trigger times for trigger input channels 33 to 57 are respectively , The trigger times of the first to fourth trigger input channels of the inflation system are respectively And the working hours are respectively , , , The trigger times for the 5th to 8th trigger input channels are respectively And the working hours are respectively , , , , The trigger time of the 2.45G ECR source is And working hours are .
4. The timing synchronization control system for the SPERF device according to claim 1, 2 or 3, characterized in that, The trigger source and delay generators A through F are all connected to the input / output controller via the TCP / IP protocol. The input / output controller is used to set the delay time and pulse width of the trigger source and delay generators A~F respectively, and is also used to trigger the output of the trigger source.