Electron bombardment ultraviolet detection camera with gated power supply

Abstract

The invention relates to the technical field of photoelectric detection and imaging, and discloses an electron bombardment ultraviolet detection camera with a gated power supply, which comprises an ultraviolet detection module, a gated power supply unit, a signal processing unit, an optical focusing system and an environment monitoring module. The gating power supply unit dynamically adjusts power supply parameters according to signal intensity and environmental conditions, and optimizes energy consumption and detection efficiency; the phase regulator analyzes the signal frequency spectrum through a fast Fourier transform algorithm, and adjusts the phase of the deflection electrode electric field to reduce interference; the optical focusing system and the electron bombardment accelerator cooperatively enhance the signal conversion efficiency. The energy consumption can be remarkably reduced, the detection precision is improved, the dynamic range is widened, and the method is suitable for ultraviolet detection tasks in complex environments. A fast Fourier transform algorithm is utilized to analyze a signal spectrum, and a phase regulator is combined to optimize a motion trail of photoelectrons, so that signal interference is effectively reduced, and the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optoelectronic detection and imaging, and particularly to an electron bombardment ultraviolet detection camera with a gated power supply. Background Art

[0002] Ultraviolet detection cameras have a wide range of applications in modern technology fields, such as astronomy, environmental monitoring, biomedical imaging, and industrial inspection. They can capture light signals in the ultraviolet band and convert them into analyzable data. However, traditional ultraviolet detection cameras still have certain limitations in terms of sensitivity, response speed, and anti-interference ability. Especially in low-light environments or high-dynamic range scenarios, their performance often fails to meet the actual requirements. In addition, existing ultraviolet detection cameras usually rely on a continuous power supply mode, which not only increases energy consumption but also may lead to the accumulation of signal noise, thus affecting the detection accuracy and stability.

[0003] On the other hand, as an effective means to enhance the sensitivity of detectors, electron bombardment technology has received extensive attention in recent years. By means of electron bombardment, the response ability of detectors to weak ultraviolet signals can be significantly improved. However, in the prior art, the power management of electron bombardment ultraviolet detection cameras is still relatively crude, lacking refined control means, resulting in low energy utilization efficiency and possible damage to the detectors due to excessive instantaneous current. At the same time, traditional power supply designs are difficult to achieve fast switching and precise regulation, restricting the performance of cameras in high-speed imaging or time-resolved applications.

[0004] Therefore, in view of the above problems, there is an urgent need for an electron bombardment ultraviolet detection camera that combines gated power supply technology to achieve precise control of the power supply, optimize the energy utilization efficiency, and at the same time improve the sensitivity and anti-interference ability of the detector, providing a more reliable and efficient solution for the development of ultraviolet detection technology. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an electron bombardment ultraviolet detection camera with a gated power supply, which solves the problems of excessive energy consumption, serious signal interference, and limited dynamic range of traditional ultraviolet detection cameras in the high-sensitivity working state.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An electron bombardment ultraviolet detection camera with a gated power supply, comprising:

[0007] An ultraviolet detection module, which is used to receive and convert ultraviolet light signals into electrical signals;

[0008] A gated power supply unit, which is electrically connected to the ultraviolet detection module and is used to dynamically adjust the supply voltage and current according to the input signal intensity;

[0009] A signal processing unit, which is connected to the ultraviolet detection module and is used for filtering, amplifying, and digitizing the converted electrical signal;

[0010] An optical focusing system, which is arranged at the front end of the ultraviolet detection module and is used for focusing the incident ultraviolet light onto the detection area;

[0011] An environmental monitoring module, which is installed on one side of the camera housing and is used for detecting the external light intensity and temperature changes in real time and feeding back to the gating power supply unit to adjust the working parameters.

[0012] Preferably, the gating power supply unit includes a main control chip. The output end of the main control chip is connected to an adjustable voltage module, which internally has a plurality of parallel voltage stabilizing circuits, and each voltage stabilizing circuit is equipped with an independent switching element. The switching element is automatically controlled by the main control chip according to the signal strength for its on-off state.

[0013] Preferably, the main control chip is fixedly installed on the circuit board inside the camera and is used for receiving data from the environmental monitoring module and the signal processing unit and generating dynamic adjustment instructions accordingly.

[0014] Preferably, the ultraviolet detection module includes a multi-layer photosensitive array, the surface of which is covered with a nanoscale ultraviolet enhancement coating. An electron bombardment accelerator is arranged below the photosensitive array and is used for enhancing the energy of photoelectrons to increase the signal strength.

[0015] Preferably, a deflection electrode is arranged inside the electron bombardment accelerator, and it changes the movement trajectory of photoelectrons by applying an alternating electric field. The control end of the deflection electrode is connected to a phase regulator, and the phase regulator adjusts the electric field phase according to the feedback of the signal processing unit.

[0016] Preferably, a digital signal processor is arranged inside the phase regulator, and it uses the fast Fourier transform algorithm to perform spectral analysis on the input signal. The formula is as follows:

[0017]

[0018] Among them, X(k) represents the amplitude of the k-th frequency component, x(n) represents the n-th sampling point of the input signal, N represents the total number of sampling points, and j is the imaginary unit.

[0019] Preferably, the optical focusing system includes a group of aspherical lenses, the surface of which is coated with an antireflection film to reduce the scattering loss of ultraviolet light. A diaphragm is arranged at the rear end of the lens group to limit the angular range of the incident light.

[0020] Preferably, the environmental monitoring module includes a photosensitive sensor and a temperature sensor, which are respectively used to detect the external light intensity and the temperature change of the camera working environment, and the output signals of the sensors are transmitted to the main control chip of the gating power supply unit through an analog-to-digital converter.

[0021] The present invention provides an electron bombardment ultraviolet detection camera with a gating power supply. It has the following beneficial effects:

[0022] 1. By introducing a gating power supply unit, the present invention can dynamically adjust the power supply parameters according to the signal intensity and environmental conditions, significantly reducing energy consumption while improving the detection efficiency and stability.

[0023] 2. The present invention uses the fast Fourier transform algorithm to analyze the signal spectrum and combines a phase regulator to optimize the movement trajectory of photoelectrons, effectively reducing signal interference and improving the detection accuracy.

[0024] 3. Through the synergistic effect of the optical focusing system and the electron bombardment accelerator, the present invention greatly enhances the conversion efficiency of ultraviolet light signals, expands the dynamic range, and is applicable to ultraviolet detection tasks in a variety of complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the internal structure of the gating power supply unit in the present invention;

[0027] Figure 3 is a schematic block diagram of the structure of the ultraviolet detection module in the present invention;

[0028] Figure 4 is a schematic diagram of the internal structure of the electron bombardment accelerator in the present invention;

[0029] Figure 5 is a schematic diagram of the structure of the optical focusing system in the present invention;

[0030] Figure 6 is a schematic diagram of the structure of the environmental monitoring module in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention provides an electron bombardment ultraviolet detection camera with a gating power supply, and its specific implementation is combined with the attachedFigure 1 to the appendix Figure 6 will be described in detail. As Figure 1 shown, the overall structure of the ultraviolet detection camera includes an ultraviolet detection module, a gating power supply unit, a signal processing unit, an optical focusing system, and an environmental monitoring module. These modules work together through electrical connection and mechanical fixation to jointly achieve the task of high-sensitivity and low-power-consumption ultraviolet light detection.

[0033] As the core component, the internal structure of the ultraviolet detection module is as Figure 3 shown, including a multi-layer photosensitive array, a nano-scale ultraviolet enhancement coating, and an electron bombardment accelerator. The multi-layer photosensitive array is composed of multiple photosensitive units, and each photosensitive unit is covered with a nano-scale ultraviolet enhancement coating. This coating can significantly improve the absorption efficiency of ultraviolet light, thereby enhancing the photoelectric conversion ability. An electron bombardment accelerator is provided at the lower part of the photosensitive array, and its internal structure is as Figure 4 shown, including a deflection electrode and a phase regulator. The deflection electrode changes the motion trajectory of photoelectrons by applying an alternating electric field, while the phase regulator adjusts the electric field phase according to the feedback of the signal processing unit to ensure that the motion trajectory of photoelectrons is always in the best state. A digital signal processor is provided inside the phase regulator, which uses the fast Fourier transform algorithm to perform spectral analysis on the input signal. The formula is as follows:

[0034]

[0035] where X(k) represents the amplitude of the k-th frequency component, x(n) represents the n-th sampling point of the input signal, N represents the total number of sampling points, and j is the imaginary unit. Through the analysis of the spectrum, the phase regulator can accurately adjust the electric field phase of the deflection electrode, thereby optimizing the motion trajectory of photoelectrons. This design effectively reduces signal interference and improves the detection accuracy.

[0036] The gating power supply unit is one of the key points of the present invention, and its internal structure is as Figure 2 shown, including a main control chip, an adjustable voltage module, a voltage stabilizing circuit, and a switching element. The main control chip is fixedly installed on the circuit board inside the camera, and is used to receive data from the environmental monitoring module and the signal processing unit, and generate dynamic adjustment instructions accordingly. The adjustable voltage module is connected to the output end of the main control chip, and multiple parallel voltage stabilizing circuits are provided inside it, and each voltage stabilizing circuit is equipped with an independent switching element. These switching elements are automatically controlled by the main control chip according to the signal intensity to achieve dynamic adjustment of the power supply parameters. For example, under low light conditions, the main control chip will reduce the power supply voltage to reduce power consumption; while under high light conditions, it will increase the power supply voltage to enhance the detection efficiency. This dynamic adjustment mechanism significantly reduces power consumption while improving the detection efficiency and stability.

[0037] The signal processing unit is connected to the ultraviolet detection module and is used to filter, amplify, and digitize the converted electrical signal. Inside the signal processing unit, there is a filter circuit, an amplifier, and an analog-to-digital converter, which can effectively remove noise and enhance the signal strength. The processed signal is transmitted to an external display or storage device to complete the ultraviolet detection task.

[0038] The optical focusing system is arranged at the front end of the ultraviolet detection module, and its structure is as Figure 5 shown, including a group of aspherical lenses, an antireflection film, and a diaphragm. The surface of the aspherical lens is coated with an antireflection film to reduce the scattering loss of ultraviolet light, thereby improving the utilization rate of the optical signal. The diaphragm is arranged at the rear end of the lens group to limit the angular range of the incident light and further improve the imaging quality. The design of the optical focusing system enables the ultraviolet light to be efficiently focused on the photosensitive array of the ultraviolet detection module, thereby greatly enhancing the conversion efficiency of the ultraviolet light signal.

[0039] The environmental monitoring module is installed on one side of the camera housing, and its structure is as Figure 6 shown, including a photosensitive sensor, a temperature sensor, and an analog-to-digital converter. The photosensitive sensor is used to detect the external light intensity, while the temperature sensor is used to detect the temperature change of the camera working environment. The output signals of the sensors are transmitted to the main control chip of the gating power supply unit through the analog-to-digital converter, providing data support for the main control chip to generate dynamic adjustment instructions. For example, in a high-temperature environment, the main control chip will appropriately reduce the supply current to prevent overheating; while in a low-temperature environment, it will increase the supply current to ensure the detection efficiency.

[0040] The working principle of the device of the present invention is as follows: First, before the device starts, the current light intensity and temperature are detected through the environmental monitoring module, and the data is transmitted to the main control chip of the gating power supply unit. The main control chip generates initial working parameters according to a preset algorithm, such as setting the initial supply voltage and current. Subsequently, when the ultraviolet light enters the optical focusing system, after being focused by the aspherical lens and screened by the diaphragm, it finally reaches the photosensitive array of the ultraviolet detection module. The photosensitive array converts the ultraviolet light signal into an electrical signal, and the signal strength is enhanced through an electron bombardment accelerator. During this process, the deflection electrode changes the movement trajectory of the photoelectrons by applying an alternating electric field, and the phase regulator adjusts the electric field phase according to the feedback of the signal processing unit to ensure that the movement trajectory of the photoelectrons is always in the best state. Next, after the signal processing unit preliminarily processes the electrical signal, the gating power supply unit dynamically adjusts the supply parameters according to the signal strength and the feedback of the environmental monitoring module. For example, when the signal strength is low, the main control chip will increase the supply voltage to enhance the detection efficiency; while when the signal strength is high, it will reduce the supply voltage to reduce energy consumption. Finally, the signal after filtering, amplification, and digitization is transmitted to an external display or storage device to complete the ultraviolet detection task.

[0041] Specific application scenarios of the present invention include, but are not limited to, fields such as atmospheric environment monitoring, industrial pollution detection, and biomedical imaging. For example, in atmospheric environment monitoring, the device of the present invention can be used to monitor the changes in the ozone layer in real time. Since the ozone layer has a strong absorption effect on ultraviolet light, the change trend of ozone concentration can be deduced by measuring the change in the intensity of ultraviolet light. In industrial pollution detection, the device of the present invention can be used to detect the content of harmful substances in waste gas emissions. For example, certain harmful gases absorb ultraviolet light at specific wavelengths, so the gas components and their concentrations can be determined by analyzing the absorption spectrum of ultraviolet light. In biomedical imaging, the device of the present invention can be used to observe the microscopic structure of cells or tissues. Since ultraviolet light has high energy, it can excite fluorescent substances in biological samples to emit visible light, thus achieving high-resolution imaging.

[0042] In summary, by introducing a gated power supply unit, the present invention can dynamically adjust the power supply parameters according to the signal intensity and environmental conditions, significantly reducing energy consumption while improving the detection efficiency and stability. In addition, the present invention uses the fast Fourier transform algorithm to analyze the signal spectrum and combines a phase regulator to optimize the movement trajectory of photoelectrons, effectively reducing signal interference and improving the detection accuracy. Through the synergistic effect of the optical focusing system and the electron bombardment accelerator, the present invention greatly enhances the conversion efficiency of ultraviolet light signals, expands the dynamic range, and is applicable to ultraviolet detection tasks in various complex environments.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electron bombardment ultraviolet detection camera with a gated power supply, characterized in that, Comprising: An ultraviolet detection module, which is used to receive and convert ultraviolet light signals into electrical signals; A gating power supply unit, which is electrically connected to the ultraviolet detection module and is used to dynamically adjust the supply voltage and current according to the input signal intensity; A signal processing unit, which is connected to the ultraviolet detection module and is used to filter, amplify, and digitize the converted electrical signals; An optical focusing system, which is arranged at the front end of the ultraviolet detection module and is used to focus the incident ultraviolet light onto the detection area; An environmental monitoring module, which is installed on one side of the camera housing and is used to detect the external light intensity and temperature changes in real time, and feed back to the gating power supply unit to adjust the working parameters.

2. The electron bombardment ultraviolet detection camera with a gated power supply according to claim 1, wherein, The gating power supply unit includes a main control chip, and the output end of the main control chip is connected to an adjustable voltage module. The adjustable voltage module internally has a plurality of parallel voltage stabilizing circuits, and each voltage stabilizing circuit is equipped with an independent switching element. The switching element is automatically controlled by the main control chip according to the signal intensity to turn on and off.

3. The electron bombardment ultraviolet detection camera with a gated power supply according to claim 2, wherein The main control chip is fixedly installed on the circuit board inside the camera and is used to receive data from the environmental monitoring module and the signal processing unit, and generate dynamic adjustment instructions accordingly.

4. The electron bombardment ultraviolet detection camera with a gated power supply according to claim 1, characterized in that, The ultraviolet detection module includes a multi-layer photosensitive array, the surface of which is covered with a nanoscale ultraviolet enhancement coating. An electron bombardment accelerator is arranged below the photosensitive array and is used to increase the energy of photoelectrons to enhance the signal intensity.

5. The electron bombardment ultraviolet detection camera with a gated power supply according to claim 4, characterized in that, A deflection electrode is arranged inside the electron bombardment accelerator, and the movement trajectory of photoelectrons is changed by applying an alternating electric field. The control end of the deflection electrode is connected to a phase regulator, and the phase regulator adjusts the electric field phase according to the feedback of the signal processing unit.

6. The electron bombardment ultraviolet detection camera with a gated power supply according to claim 5, characterized in that, A digital signal processor is arranged inside the phase regulator, and it uses the fast Fourier transform algorithm to perform spectral analysis on the input signal. The formula is as follows: Where X(k) represents the amplitude of the k-th frequency component, x(n) represents the n-th sampling point of the input signal, N represents the total number of sampling points, and j is the imaginary unit.

7. An electron bombardment ultraviolet detection camera with a gated power supply according to claim 1, characterized in that, The optical focusing system includes a group of aspherical lenses, the surfaces of which are coated with antireflection films to reduce the scattering loss of ultraviolet light. A diaphragm is arranged at the rear end of the lens group to limit the angular range of the incident light.

8. An electron bombardment ultraviolet detection camera with a gated power supply according to claim 1, characterized in that, The environmental monitoring module includes a photosensitive sensor and a temperature sensor, which are respectively used to detect the external light intensity and the temperature change of the camera working environment. The output signals of the sensors are transmitted to the main control chip of the gating power supply unit through an analog-to-digital converter.

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