High-voltage power supply system based on infrared communication

Abstract

The invention relates to the technical field of high-voltage power supply systems, in particular to a high-voltage power supply system based on infrared communication. The technical scheme comprises a sending end module and a receiving end module. The transmitting end module specifically comprises a BNC Q9 interface used for receiving four paths of analog voltage input signals from an FPGA host computer; an analog voltage signal of the transmitting end module enters the signal acquisition and ADC conversion unit, and the signal acquisition and ADC conversion unit converts an analog signal into a digital signal; and the electro-optical signal processing and modulating unit is responsible for processing the digital signal converted by the ADC unit. The high-voltage power supply control system has obvious advantages in wiring, signal transmission stability, accurate control, cost effectiveness and flexibility, can effectively solve many problems of the existing optical fiber communication mode in the high-voltage power supply control system, and improves the overall performance and reliability of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power supply systems, and in particular to a high-voltage power supply system based on infrared communication. Background Art

[0002] Existing high-voltage power supply control systems usually use electro-optical converters (E / O converters) to convert electrical signals into optical signals, transmit them through optical fibers, and then use optoelectronic converters (O / E converters) to convert optical signals back into electrical signals for subsequent control and feedback. However, with the increase in system scale and the demand for remote control, traditional fiber-optic communication methods face many challenges, including the complexity of fiber-optic wiring and sensitivity to the environment. In a 2.5MV accelerator platform, the ion source system needs to stably and accurately control multiple power supplies, including extraction power supplies and suppression power supplies, which place strict requirements on the accuracy of control signals and the reliability of transmission. Therefore, how to design an efficient and stable wireless communication method has become a key technical issue in improving the performance of high-voltage power supply control systems.

[0003] Most existing high-voltage power supply control systems rely on traditional fiber-optic communication solutions. For example, in ion sources or accelerator systems, it is usually necessary to convert electrical signals into optical signals through electro-optical converters to ensure the stability of remote transmission of the control signals of the high-voltage power supply. A common practice is to output the control signal of the power supply through an analog signal, use a photoelectric converter to convert the electrical signal into an optical signal, and then transmit it over long distances through optical fiber. Finally, the optical signal is converted back into an electrical signal through the receiving photoelectric converter, and then used to drive the high-voltage power supply system. With the expansion of high-voltage power supply systems to higher voltages and powers, existing fiber-optic communication solutions face greater challenges. They need to simultaneously meet the needs of precise voltage and current regulation to control the output of the high-voltage power supply and real-time coordination and communication between multiple power supplies.

[0004] In summary, the present application proposes a high voltage power supply system based on infrared communication. Summary of the invention

[0005] The purpose of the present invention is to propose a high-voltage power supply system based on infrared communication in view of the problem that the accuracy of control signals and the reliability of transmission of the existing high-voltage power supply control system in the background technology are low.

[0006] The technical solution of the present invention: a high-voltage power supply system based on infrared communication, including a transmitting end module and a receiving end module;

[0007] The sending end module specifically includes:

[0008] BNC Q9 interface, used to receive 4-channel analog voltage input signals from the FPGA host computer;

[0009] The signal acquisition and ADC conversion unit is used to convert the analog voltage signal received by the sending end module into a digital signal;

[0010] The electro-optical signal processing and modulation unit is responsible for processing the digital signal converted by the ADC unit and modulating the digital signal into a format suitable for infrared transmission;

[0011] The main control unit at the transmitting end is composed of a minimum system board controlled by a single-chip microcomputer or a field programmable gate array as the main control chip;

[0012] The infrared light unit is driven by the main control unit at the transmitting end to convert the modulated digital signal into an infrared light signal, and transmit the infrared signal to the receiving end module;

[0013] The receiving end module specifically includes:

[0014] Infrared signal receiving unit: receives infrared light signals from the transmitting module through a photodiode, which converts the light signals into electrical signals and connects them to the receiving main control unit;

[0015] Optical-electrical signal demodulation and processing unit: demodulates the received electrical signal. The demodulation process is to extract the information in the optical signal and convert it into a digital signal that can be processed;

[0016] The receiving end main control unit is composed of a minimum system board controlled by a single-chip microcomputer or a field programmable gate array as the main control chip;

[0017] DAC conversion unit: converts the demodulated digital signal into an analog voltage signal;

[0018] Analog voltage output unit: used to output the analog voltage signal through the analog voltage output interface of the receiving end module.

[0019] Optionally, the 4-channel analog voltage input signals of the FPGA host computer are analog voltages of 0-12V, which are set and adjusted by the FPGA host computer.

[0020] Optionally, the digitization accuracy of the digital signal is adjusted by adjusting the resolution of the ADC unit to achieve the required accuracy requirement.

[0021] Optionally, in the electro-optical signal processing and modulation unit, the modulation process adopts frequency shift keying (FSK) or amplitude modulation (AM).

[0022] Optionally, in the infrared light unit, an infrared transmitting tube is used as a transmitting element to transmit the modulated infrared signal to a receiving end module wirelessly.

[0023] Optionally, in the optical-electrical signal demodulation and processing unit, the receiving end main control unit selects a suitable demodulation method according to different modulation modes, and the demodulation methods include frequency shift demodulation and amplitude demodulation.

[0024] Optionally, the output range of the analog voltage signal of the DAC conversion unit is 0-12V.

[0025] Optionally, the high voltage power supply further includes:

[0026] Switching signal, controlling the switching state of the high voltage power supply;

[0027] Voltage setting signal, controlling the voltage output of the high voltage power supply;

[0028] Current setting signal, controlling the current output of the high voltage power supply;

[0029] Reset signal controls the reset operation of the high voltage power supply.

[0030] The beneficial effects of the present invention include:

[0031] The transmitting module in the present invention can accurately receive the analog voltage signal from the FPGA host computer, and convert it into a digital signal through a high-precision ADC unit, and then use a suitable modulation method through the electro-optical signal processing and modulation unit to ensure the stability and anti-interference ability of signal transmission, and finally send it by the infrared light unit. The receiving module accurately converts the signal into an analog voltage and outputs it to the high-voltage power supply. The whole process ensures the high efficiency and stability of signal transmission, and can accurately control the output of the high-voltage power supply to meet the high requirements of the ion source system for power control. Even in the case where multiple power supplies need to coordinate and communicate in real time, the rapid response capability of infrared communication can better adapt to ensure the normal operation of the system;

[0032] The solution based on infrared communication does not require a large amount of expensive optical fiber materials and complex wiring construction, which significantly reduces the initial construction cost of the system. In addition, the wireless characteristics of infrared communication make the system more flexible in layout and adjustment. When the system needs to be expanded or rearranged, there is no need to rewire, just adjust the position of the transmitter and receiver modules appropriately, which greatly saves time and cost and improves the scalability and adaptability of the system.

[0033] The present invention has obvious advantages in wiring, signal transmission stability, precise control, cost-effectiveness and flexibility, and can effectively solve many problems faced by existing optical fiber communication methods in high-voltage power supply control systems, thereby improving the overall performance and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1A principle block diagram of a high voltage power supply system based on infrared communication provided by an embodiment of the present invention;

[0035] Figure 2 A block diagram of a transmitting end module provided by an embodiment of the present invention;

[0036] Figure 3 A principle block diagram of a receiving end module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The technical solution of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0038] The components of the embodiments of the present disclosure generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure claimed, but merely represents selected embodiments of the present disclosure.

[0039] Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present disclosure.

[0040] Example 1

[0041] The embodiment of the present invention provides a high-voltage power supply control system based on infrared communication, which is mainly composed of two modules: a transmitting end module and a receiving end module. The transmitting end module is responsible for collecting analog voltage signals and wirelessly transmitting the signals through an infrared light unit, while the receiving end module receives the signals and converts them into analog voltage outputs for use by the high-voltage power supply control system.

[0042] For ease of understanding, Figure 1 A schematic structural diagram of a high-voltage power supply control system based on infrared communication provided by an embodiment of the present invention.

[0043] Depend on Figure 1 As can be seen, the FPGA host computer is connected to the sending end module, and the receiving end module is connected to the high-voltage power supply; the FPGA host computer sends an analog signal, the sending end module receives the analog signal from the FPGA host computer, and transmits it to the receiving end module through infrared light of the wireless channel. The receiving end module processes the signal and sends it to the high-voltage power supply to complete its control.

[0044] First, the sending end module of the high-voltage power supply control system based on infrared communication receives 4 analog voltage inputs provided by the FPGA host computer, with a voltage range of 0-12V.

[0045] In this embodiment, the transmitting end module of the high voltage power supply control system based on infrared communication includes a BNC Q9 interface input, a signal acquisition and ADC conversion unit, an electro-optical signal processing and modulation unit and an infrared light unit.

[0046] The transmitter module receives 4 analog voltage input signals from the FPGA host computer through the BNC Q9 connector. Each signal is an analog voltage in the range of 0-12V. This input voltage signal can be set and adjusted by the FPGA host computer to meet system needs.

[0047] Among them, the analog voltage signal of the sending end module enters the ADC unit, which converts the analog signal into a digital signal. Since the accuracy and sampling rate of the ADC unit are crucial to the control accuracy of the final system, a high-precision, high-sampling-rate ADC unit is selected to process these signals. The digitization accuracy of each signal can be achieved by adjusting the resolution of the ADC unit to meet the required accuracy requirements.

[0048] In this embodiment, the digital signals converted by the ADC unit are transmitted to the transmitting end main control unit. The transmitting end main control unit is responsible for processing these digital signals and modulating them into a format suitable for infrared transmission. The modulation process can adopt common modulation methods, such as frequency shift keying (FSK) or amplitude modulation (AM), to ensure the transmission stability and anti-interference ability of the signal.

[0049] In addition, by using an infrared light unit to send a signal, the main control unit at the transmitting end drives the infrared light unit to convert the modulated digital signal into an infrared light signal. The infrared transmitting tube is used as a transmitting element to transmit the modulated infrared signal to the receiving end module wirelessly. The infrared light unit of the transmitting end module needs to meet a large transmission distance and strong anti-interference ability to ensure that the signal is not interfered with and reliably transmitted in a high-voltage environment.

[0050] For ease of understanding, Figure 2 A schematic diagram of a sending end module structure provided in an embodiment of the present invention.

[0051] Depend on Figure 2 As can be seen, after the 4-channel analog control signals sent by the FPGA host computer are connected to the sending end module via the BNC Q9 interface, the internal sending end main control unit (such as STM32, FPGA) controls the ADC unit to extract the analog signal and convert it into a digital signal, driving the infrared communication unit to send the collected analog signal.

[0052] At the same time, the receiving end module of the high-voltage power supply control system based on infrared communication receives the optical signal of the transmitting end module through the infrared photodiode, and demodulates and converts it into an analog voltage output.

[0053] In this embodiment, the receiving end module of the high voltage power supply control system based on infrared communication includes an infrared signal receiving unit, an optical-electrical signal demodulation and processing unit, a DAC conversion unit and an analog voltage output unit, and each unit is described in detail below.

[0054] Infrared signal receiving unit, the receiving module receives the infrared light signal from the transmitting module through a photodiode. The photodiode converts the light signal into an electrical signal and connects it to the receiving main control unit. In order to improve the stability of the received signal, the photodiode of the receiving module needs to have higher sensitivity and lower noise.

[0055] In this embodiment, in the optical-electrical signal demodulation and processing unit, the received electrical signal is demodulated by the receiving end main control unit. The demodulation process is to extract the information in the optical signal and convert it into a digital signal that can be processed. The receiving end main control unit can select a suitable demodulation method according to different modulation methods, including frequency shift demodulation (FSK demodulation) or amplitude demodulation (AM demodulation).

[0056] The demodulated digital signal is transmitted to the DAC unit, which converts it into an analog voltage signal. The output range of the analog voltage signal is 0-12V to ensure that it is compatible with the control interface of the high-voltage power supply. The accuracy of the DAC unit directly affects the output accuracy of the high-voltage power supply, so it is very important to choose a high-precision DAC module.

[0057] In addition, the analog voltage output unit outputs the analog voltage signal after DAC conversion through the analog voltage output interface of the receiving module. The receiving module provides 4 analog voltage output interfaces with a signal range of 0-12V, which is consistent with the input signal of the sending module. These output signals are transmitted to the high-voltage power supply through the DB15 interface to control the output voltage and current of the high-voltage power supply.

[0058] For ease of understanding, Figure 3 A schematic diagram of a receiving end module structure provided by an embodiment of the present invention.

[0059] Depend on Figure 3 As can be seen, the digital optical signal received by the infrared communication unit of the receiving end module is converted into a digital electrical signal, and then processed by the receiving end main control unit, such as STM32 and FPGA, and then the control signal is output through the BNC Q9 interface through the peripheral DAC unit connected to it, and connected to the control interface DB15 of the high-voltage power supply to complete the control.

[0060] At the same time, the analog voltage output signal of the receiving module controls the high voltage power supply.

[0061] Example 2

[0062] This embodiment is based on the embodiment 1, and the controlled power supply of the high-voltage power supply control system based on infrared communication further includes:

[0063] Switch signal (12V), the system controls the switch state of the high-voltage power supply through the switch signal. Connect the receiving end module through the DB15 interface to control the switch of the high-voltage power supply;

[0064] Voltage setting signal (0-10V), the system controls the voltage output of the high-voltage power supply through the voltage setting signal, connects the receiving end module to control the voltage setting pin of the high-voltage power supply through the DB15 interface, and sets the output voltage range of the high-voltage power supply. The 0-10V voltage setting signal corresponds to the zero to full-scale voltage output of the high-voltage power supply;

[0065] Current setting signal (0-10V), the system controls the current output of the high-voltage power supply through the current setting signal, connects the receiving end module through the DB15 interface to control the current setting pin of the high-voltage power supply, and sets the output current range of the high-voltage power supply. The 0-10V current setting signal corresponds to the zero to full-scale current output of the high-voltage power supply;

[0066] Reset signal (0V). The system controls the reset operation of the high-voltage power supply through the reset signal, and controls the restart of the high-voltage power supply by connecting the receiving end module through the DB15 interface.

[0067] The wireless communication technology used does not require complicated optical fiber wiring, especially for controlling power supply equipment running on high voltage potential. Compared with control systems using photoelectric converters and wired optical fibers, it reduces installation and maintenance costs and has stronger adaptability, especially in large-scale experimental platforms because of its small space occupation and compact modules with better flexibility; the transmitter module and the receiver module used in the system have strong scalability. This system adopts a modular design, which can adapt to the increase in the demand for control objects. The system can be flexibly expanded, which is beneficial to future functional expansion and upgrades.

[0068] This system has real-time and continuity. The sending end module can continuously collect and send voltage signals, and the receiving end module can receive and reproduce voltage values ​​in real time to ensure the stable operation of the system. The system realizes high-precision control. Through precise analog voltage signal input and output, the system can realize precise control of high-voltage power supply and meet the high-precision and reliable communication control requirements of complex experimental systems for power supply control.

[0069] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high voltage power supply system based on infrared communication, characterized in that: It includes a sending end module and a receiving end module; The sending end module specifically includes: BNC Q9 interface, used to receive 4-channel analog voltage input signals from the FPGA host computer; The signal acquisition and ADC conversion unit is used to convert the analog voltage signal received by the sending end module into a digital signal; The electro-optical signal processing and modulation unit is responsible for processing the digital signal converted by the ADC unit and modulating the digital signal into a format suitable for infrared transmission; The main control unit at the transmitting end is composed of a minimum system board controlled by a single-chip microcomputer or a field programmable gate array as the main control chip. The infrared light unit is driven by the main control unit at the transmitting end to convert the modulated digital signal into an infrared light signal, and transmit the infrared signal to the receiving end module; The receiving end module specifically includes: The infrared signal receiving unit receives the infrared light signal from the transmitting module through a photodiode, which converts the light signal into an electrical signal and connects it to the receiving main control unit; The optical-electrical signal demodulation and processing unit demodulates the received electrical signal. The demodulation process is to extract the information in the optical signal and convert it into a digital signal that can be processed; The receiving end main control unit is composed of a minimum system board controlled by a single-chip microcomputer or a field programmable gate array as the main control chip. A DAC conversion unit converts the demodulated digital signal into an analog voltage signal; The analog voltage output unit is used to output the analog voltage signal through the analog voltage output interface of the receiving end module.

2. A high-voltage power supply system based on infrared communication according to claim 1, characterized in that: The 4-channel analog voltage input signals of the FPGA host computer are analog voltages of 0-12V, which are set and adjusted by the FPGA host computer.

3. A high-voltage power supply system based on infrared communication according to claim 1, characterized in that: The digitization accuracy of the digital signal is achieved by adjusting the resolution of the ADC unit to achieve the required accuracy requirement.

4. A high-voltage power supply system based on infrared communication according to claim 1, characterized in that: In the electro-optical signal processing and modulation unit, the modulation process adopts frequency shift keying (FSK) or amplitude modulation (AM).

5. The high-voltage power supply system based on infrared communication according to claim 1, characterized in that: In the infrared light unit, the infrared transmitting tube is used as a transmitting element to transmit the modulated infrared signal to the receiving end module in a wireless manner.

6. A high-voltage power supply system based on infrared communication according to claim 1, characterized in that: In the optical-electrical signal demodulation and processing unit, the receiving end main control unit selects a suitable demodulation method according to different modulation modes, and the demodulation methods include frequency shift demodulation and amplitude demodulation.

7. The high-voltage power supply system based on infrared communication according to claim 1, characterized in that: The output range of the analog voltage signal of the DAC conversion unit is 0-12V.

8. The high-voltage power supply system based on infrared communication according to claim 1, characterized in that: The high voltage power supply also includes: A switch signal is used to control the switch state of the high voltage power supply; A voltage setting signal, used to set the voltage output of the high voltage power supply; A current setting signal, used to set the current output of the high voltage power supply; Reset signal, used to control the reset operation of the high voltage power supply.

Images