Oscilloscope based on long afterglow luminescent material

Abstract

The invention discloses an oscilloscope based on a long afterglow luminescent material. The oscilloscope comprises a first laser, a light beam horizontal deflector, a light beam vertical deflector and a long afterglow screen, the first laser is used for emitting a light beam, the light beam sequentially enters the light beam horizontal deflector and the light beam vertical deflector and then reaches the long afterglow screen, and light spots are formed on the long afterglow screen; the light beam horizontal deflector is used for enabling the light spots to circularly move from one side of the long afterglow screen to the other opposite side in the horizontal direction at a preset speed; the light beam vertical deflector is used for enabling a light spot to move up and down in the long afterglow screen in the vertical direction under the action of an input electric signal, the amplitude of the up-down movement is in positive correlation with the intensity of the input electric signal, and the frequency of the up-down movement is consistent with the frequency of the input electric signal; and the long afterglow screen is used for displaying the waveform of the input electric signal. According to the oscilloscope, the size, energy consumption, complexity and cost of equipment can be effectively reduced, and batch production, popularization and application are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of oscilloscopes, and in particular to an oscilloscope based on a long afterglow luminescent material. Background Art

[0002] As an important scientific instrument, the oscilloscope has made important contributions to the advancement of technology, especially the development of electronic circuit technology. Its main function is to convert the voltage signal into a waveform that changes over time, so that technicians can obtain relevant information such as the frequency, amplitude, and noise of the voltage signal by observing the waveform.

[0003] The development of oscilloscopes can be roughly divided into three stages. The first stage was a mechanical waveform recorder, which mainly recorded some low-frequency signals. In the 1930s, people invented the cathode ray tube, which opened the second stage of the oscilloscope, the era of analog oscilloscopes. The electric field generated by the charging electrode can drive the displacement of the moving electron beam and form a visible waveform track on the surface coated with luminescent phosphide. Later, with the development of integrated circuits, oscilloscopes ushered in the digital era, with increasing functions and smaller and smaller sizes. This is the third stage of the development of oscilloscopes.

[0004] However, even though digital devices are fully developed today, cathode ray tube analog oscilloscopes are still widely used in various scientific research laboratories and production lines. However, cathode ray tube analog oscilloscopes have obvious disadvantages such as large size, high energy consumption, complex structure and high cost. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first object of the present invention is to provide an oscilloscope based on a long afterglow luminescent material, which can effectively reduce the size, energy consumption, complexity and cost of the device, and is conducive to mass production and popularization and application.

[0006] To achieve the above-mentioned purpose, the first aspect of the present invention proposes an oscilloscope based on a long afterglow luminescent material, comprising: a first laser, a horizontal beam deflector, a vertical beam deflector and a long afterglow screen, wherein the long afterglow screen is coated with a long afterglow luminescent material; the first laser is used to emit a light beam, and after the light beam enters the horizontal beam deflector and the vertical beam deflector in sequence, it reaches the long afterglow screen and forms a light spot on the long afterglow screen, and the light spot illuminates the long afterglow luminescent material on the long afterglow screen; the horizontal beam deflector is used to make the light spot move cyclically from one side of the long afterglow screen to the other opposite side in the horizontal direction at a preset speed; the vertical beam deflector is used to make the light spot move up and down in the long afterglow screen in the vertical direction under the action of an input electrical signal, wherein the amplitude of the up and down movement is positively correlated with the intensity of the input electrical signal, and the frequency of the up and down movement is consistent with the frequency of the input electrical signal; the long afterglow screen is used to display the waveform of the input electrical signal.

[0007] According to the oscilloscope based on the long afterglow luminescent material of the embodiment of the present invention, the light beam emitted by the first laser enters the horizontal beam deflector and the vertical beam deflector in sequence, reaches the long afterglow screen, and forms a light spot on the long afterglow screen, and the light spot illuminates the long afterglow luminescent material on the long afterglow screen; wherein, the horizontal beam deflector can deflect the light beam in the horizontal direction, so that the light spot can be cyclically moved from one side of the long afterglow screen to the other side at a preset speed in the horizontal direction, and the vertical beam deflector can deflect the light beam in the vertical direction under the action of the input electrical signal, so that the light spot moves up and down in the long afterglow screen according to the intensity and frequency of the input electrical signal; the light spot will illuminate the long afterglow luminescent material on the long afterglow screen, and since the long afterglow luminescent material on the long afterglow screen will not be extinguished immediately after being illuminated, the waveform of the input electrical signal can be displayed on the long afterglow screen. Therefore, the oscilloscope effectively reduces the volume, energy consumption, complexity and cost of the equipment by using a laser to replace the cathode ray tube of the analog oscilloscope, which is conducive to mass production and popularization and application, and is especially suitable for use in teaching equipment.

[0008] In addition, the oscilloscope based on the long afterglow luminescent material according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the long afterglow luminescent material is SrAl2O4:Eu,Dy.

[0010] According to one embodiment of the present invention, the horizontal beam deflector includes: a reflection unit, which is a polygonal prism structure, and the number of cross-sectional edges of the reflection unit is greater than or equal to 3; a stepper motor, which is used to drive the reflection unit so that the reflection unit rotates at a preset speed with the longitudinal axis of the reflection unit as the center.

[0011] According to an embodiment of the present invention, the reflective unit is made of K9 glass, and the side surfaces of the reflective unit are all plated with aluminum.

[0012] According to one embodiment of the present invention, the vertical light beam deflector includes: a rotating shaft, a plane mirror, a permanent magnet, an electromagnet and a filament spring; the plane mirror is used to be fixedly connected to the rotating shaft, and the plane mirror reciprocates around the rotating shaft; the permanent magnet is attached to one side of the back side of the plane mirror; the electromagnet and the permanent magnet are arranged relative to each other with a preset distance; the other side of the back side of the plane mirror is connected to the housing of the vertical light beam deflector via the filament spring; the filament spring is a dual-purpose spring for compression and tension, and maintains a natural relaxed state when no electrical signal is input to the electromagnet.

[0013] According to an embodiment of the present invention, the light beam output by the first laser is one of ultraviolet light, violet light and blue light.

[0014] According to an embodiment of the present invention, the oscilloscope further includes: a second laser, the light beam output by the second laser is infrared light, and the wavelength of the infrared light is 980 nm or 1064 nm.

[0015] According to an embodiment of the present invention, the light beam output by the first laser and the light beam output by the second laser are combined into one beam by a beam combiner.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a block diagram of an oscilloscope based on a long afterglow luminescent material according to an embodiment of the present invention.

[0018] Figure 2 The figure is a top view of the structure of an oscilloscope based on a long afterglow luminescent material according to an embodiment of the present invention.

[0019] Figure 3 The structure front view of an oscilloscope based on a long afterglow luminescent material according to one embodiment of the present invention.

[0020] Figure 4 FIG. 4 is a schematic diagram of the structure of a vertical light beam deflector according to an embodiment of the present invention.

[0021] Figure 5 FIG. 4 is a block diagram of a beam combiner according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1. First laser; 2. Horizontal beam deflector; 21. Reflection unit; 22. Stepper motor; 3. Vertical beam deflector; 4. Long afterglow screen; 5. Rotating shaft; 6. Plane mirror; 7. Permanent magnet; 8. Electromagnet; 9. Filament spring; 10. Second laser; 11. Beam combiner. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The following describes an oscilloscope based on a long afterglow luminescent material according to an embodiment of the present invention with reference to the accompanying drawings.

[0026] Figure 1 Schematic diagram of a block diagram of an oscilloscope based on a long afterglow luminescent material according to an embodiment of the present invention.

[0027] like Figure 1 As shown, the oscilloscope based on the long afterglow luminescent material according to the embodiment of the present invention comprises: a first laser 1 , a horizontal light beam deflector 2 , a vertical light beam deflector 3 and a long afterglow screen 4 .

[0028] The long afterglow screen 4 is coated with a long afterglow luminescent material; the first laser 1 is used to emit a light beam, which enters the horizontal beam deflector 2 and the vertical beam deflector 3 in sequence, reaches the long afterglow screen 4, and forms a light spot on the long afterglow screen 4, and the light spot illuminates the long afterglow luminescent material on the long afterglow screen 4; the horizontal beam deflector 2 is used to make the light spot move from one side of the long afterglow screen 4 to the other side in a horizontal direction at a preset speed; the vertical beam deflector 3 is used to make the light spot move up and down in the long afterglow screen 4 in the vertical direction under the action of the input electrical signal, wherein the amplitude of the up and down movement is positively correlated with the intensity of the input electrical signal, and the frequency of the up and down movement is consistent with the frequency of the input electrical signal; the long afterglow screen 4 is used to display the waveform of the input electrical signal. The preset speed can be calibrated according to actual conditions.

[0029] Specifically, the light beam emitted by the first laser 1 enters the horizontal beam deflector 2 and the vertical beam deflector 3 in sequence, reaches the long afterglow screen 4, and forms a light spot on the long afterglow screen 4, and the light spot illuminates the long afterglow luminescent material on the long afterglow screen 4. Among them, the horizontal beam deflector 2 can deflect the light beam in the horizontal direction, so that the light spot can be cyclically moved from one side of the long afterglow screen 4 to the other side at a preset speed in the horizontal direction. For example, the horizontal beam deflector 2 can move the light spot from the left side of the long afterglow screen 4 to the right side in the horizontal direction at a preset speed. When it moves to the rightmost side, the light spot is moved from the leftmost side to the right at a preset speed, and then the light spot is moved from the leftmost side to the right at a preset speed, and so on. The vertical beam deflector 3 can deflect the light beam in the vertical direction under the action of the input electrical signal, so that the light spot moves up and down in the long afterglow screen 4 according to the intensity and frequency of the input electrical signal. The light spot will light up the long afterglow luminescent material on the long afterglow screen 4 . Since the long afterglow luminescent material on the long afterglow screen 4 will not be extinguished immediately after being lit, the waveform of the input electrical signal can be displayed on the long afterglow screen 4 .

[0030] According to one embodiment of the present invention, the long afterglow luminescent material is SrAl2O4:Eu,Dy, which is evenly coated on a transparent acrylic plate with a thickness of 0.1 mm.

[0031] Specifically, SrAl2O4:Eu,Dy material, that is, strontium aluminum phosphate (SSrAl2O4) material doped with europium (Eu) and dysprosium (Dy), has high luminous efficiency, produces strong luminescence at low excitation energy; and has long afterglow characteristics, after the excitation source is removed, the material can still continue to emit light for a long time; and has high brightness and brightness retention, after excitation, SrAl2O4:Eu,Dy material can maintain a high brightness level, and the brightness decay is slow. In addition, it also has the advantages of good chemical stability, low toxicity, and low cost.

[0032] According to one embodiment of the present invention, Figure 2 and Figure 3 As shown, the horizontal beam deflector 2 includes: a reflection unit 21, which is a polygonal prism structure, and the number of cross-sectional edges of the reflection unit 21 is greater than or equal to 3; a stepper motor 22, which is used to drive the reflection unit 21, so that the reflection unit 21 rotates at a preset speed with the longitudinal axis of the reflection unit 21 as the center. The preset speed can be calibrated according to actual conditions.

[0033] Further, according to an embodiment of the present invention, the reflective unit 21 is made of K9 glass, and the side surfaces of the reflective unit 21 are all plated with aluminum.

[0034] For example, Figure 2 and Figure 3As shown, the horizontal beam deflector 2 is a reflective type, and the reflective unit 21 can be a 6-prism structure made of K9 glass. The 6 side surfaces are all aluminum-plated, 10 mm high, and 5 mm wide on the side. It is driven by a stepper motor 22 and rotates at a constant speed at a preset speed with its longitudinal axis as the center. The driving voltage of the stepper motor 22 is 6V, the maximum speed is 6000 rpm, and it has a PWM speed regulation function.

[0035] Specifically, the light beam emitted by the first laser 1 irradiates the horizontal light beam deflector 2, is reflected by one side of the reflection unit 21 to the vertical light beam deflector 3, and then is reflected by the vertical light beam deflector 3 to the long afterglow screen 4 to form a light spot, and because the stepper motor 22 drives the reflection unit 21 to rotate at a constant speed, the light spot moves horizontally from one side of the long afterglow screen 4 to the other side at a preset speed. With the constant rotation of the stepper motor 22, when the light beam is switched to the next side of the reflection unit 21, the light spot completes a horizontal movement, and starts to move horizontally from one side of the long afterglow screen 4 to the other side again, and repeats this cycle.

[0036] According to one embodiment of the present invention, Figure 4 As shown, the vertical beam deflector 3 includes: a rotating shaft 5, a plane mirror 6, a permanent magnet 7, an electromagnet 8 and a filament spring 9; the plane mirror 6 is used for fixed connection with the rotating shaft 5, and the plane mirror 6 reciprocates around the rotating shaft 5; the permanent magnet 7 is attached to one side of the back of the plane mirror 6; the electromagnet 8 and the permanent magnet 7 are arranged relative to each other with a preset distance; the other side of the back of the plane mirror 6 is connected to the housing of the vertical beam deflector 3 through the filament spring 9; the filament spring 9 is a dual-purpose spring for compression and tension, and maintains a natural relaxation state when there is no electrical signal input to the electromagnet 8. Among them, the preset distance can be calibrated according to actual conditions.

[0037] Specifically, when there is an electrical signal input, when the electromagnet 8 attracts the permanent magnet 7 under the action of the input electrical signal, the plane mirror 6 compresses the spring under the drive of the permanent magnet 7; when the electromagnet 8 repels the permanent magnet 7 under the action of the input electrical signal, the plane mirror 6 tightens the spring under the drive of the permanent magnet 7. Therefore, during the movement of the plane mirror 6, the light beam is deflected in the vertical direction due to the reflection of the plane mirror 6, so that the light spot moves up and down in the long afterglow screen 4, and the amplitude of the up and down movement is positively correlated with the intensity of the input electrical signal, and the frequency of the up and down movement is consistent with the frequency of the input electrical signal. Exemplarily, the diameter of the rotating shaft 5 is 2mm, the plane mirror 6 is made of aluminum, the permanent magnet 7 is a neodymium iron boron magnet with a size of 3*3*1mm, the working voltage of the electromagnet 8 is 12V, the maximum suction force is 4N, the diameter is 8mm, and the spring wire of the filament spring 9 is made of steel with a diameter of 0.2mm.

[0038] According to an embodiment of the present invention, the light beam output by the first laser 1 is one of ultraviolet light, purple light and blue light. When the light beam output by the first laser 1 is blue light, the central wavelength is 450 nm.

[0039] According to one embodiment of the present invention, Figure 5 As shown, the oscilloscope further includes: a second laser 10, the light beam output by the second laser 10 is infrared light, and the wavelength of the infrared light is 980nm or 1064nm.

[0040] According to one embodiment of the present invention, Figure 5 As shown, the light beam output by the first laser 1 and the light beam output by the second laser 10 are combined into one beam by a beam combiner 11 .

[0041] The afterglow time of the long afterglow screen 4 can be adjusted by adding infrared light.

[0042] According to tests, the oscilloscope based on the long afterglow luminescent material of the present invention can correctly display the signal waveform under the action of the input voltage signal.

[0043] To summarize, according to the oscilloscope based on long afterglow luminescent material in the embodiment of the present invention, the light beam emitted by the first laser enters the horizontal beam deflector and the vertical beam deflector in sequence, reaches the long afterglow screen, and forms a light spot on the long afterglow screen, and the light spot illuminates the long afterglow luminescent material on the long afterglow screen; wherein, the horizontal beam deflector can deflect the light beam in the horizontal direction, so that the light spot can move cyclically from one side of the long afterglow screen to the other opposite side in the horizontal direction at a preset speed, and the vertical beam deflector can deflect the light beam in the vertical direction under the action of the input electrical signal, so that the light spot moves up and down in the long afterglow screen according to the intensity and frequency of the input electrical signal; the light spot will illuminate the long afterglow luminescent material on the long afterglow screen, and since the long afterglow luminescent material on the long afterglow screen will not be extinguished immediately after being illuminated, the waveform of the input electrical signal can be displayed on the long afterglow screen. Therefore, the oscilloscope uses a laser to replace the cathode ray tube of the analog oscilloscope, which effectively reduces the size, energy consumption, complexity and cost of the equipment, is conducive to mass production and popularization and application, and is especially suitable for use in teaching equipment.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An oscilloscope based on a long afterglow luminescent material, characterized in that: include: A first laser, a horizontal beam deflector, a vertical beam deflector and a long afterglow screen, wherein the long afterglow screen is coated with a long afterglow luminescent material; The first laser is used to emit a light beam, and after the light beam enters the horizontal light beam deflector and the vertical light beam deflector in sequence, it reaches the long afterglow screen and forms a light spot on the long afterglow screen, and the light spot illuminates the long afterglow luminescent material on the long afterglow screen; The horizontal beam deflector is used to make the light spot move cyclically from one side of the long afterglow screen to the other opposite side in the horizontal direction at a preset speed; The beam vertical deflector is used to make the light spot move up and down in the long afterglow screen in the vertical direction under the action of the input electrical signal, wherein the amplitude of the up and down movement is positively correlated with the intensity of the input electrical signal, and the frequency of the up and down movement is consistent with the frequency of the input electrical signal; The long persistence screen is used to display the waveform of the input electrical signal.

2. The oscilloscope based on the long afterglow luminescent material according to claim 1, characterized in that: The long afterglow luminescent material is SrAl2O4:Eu,Dy.

3. The oscilloscope based on the long afterglow luminescent material according to claim 1, characterized in that: The horizontal beam deflector comprises: A reflection unit, wherein the reflection unit is a polygonal column structure, and the number of cross-sectional edges of the reflection unit is greater than or equal to 3; A stepper motor is used to drive the reflection unit so that the reflection unit rotates at a preset speed with the longitudinal axis of the reflection unit as the center.

4. The oscilloscope based on the long afterglow luminescent material according to claim 3, characterized in that: The reflective unit is made of K9 glass, and the side surfaces of the reflective unit are all plated with aluminum.

5. The oscilloscope based on the long afterglow luminescent material according to claim 1, characterized in that: The vertical light beam deflector comprises: a rotating shaft, a plane mirror, a permanent magnet, an electromagnet and a filament spring; The plane mirror is used to be fixedly connected to the rotating shaft, and the plane mirror reciprocates around the rotating shaft; The permanent magnet is attached to one side of the back side of the plane mirror; The electromagnet and the permanent magnet are arranged relative to each other with a preset distance; The other side of the back side of the plane mirror is connected to the housing of the vertical light beam deflector via the filament spring; The filament spring is a spring for both compression and tension, and maintains a natural relaxed state when no electrical signal is input to the electromagnet.

6. The oscilloscope based on the long afterglow luminescent material according to claim 1, characterized in that: The light beam output by the first laser is one of ultraviolet light, violet light and blue light.

7. The oscilloscope based on the long afterglow luminescent material according to claim 6, characterized in that: The oscilloscope further includes: a second laser, the light beam output by the second laser is infrared light, and the wavelength of the infrared light is 980nm or 1064nm.

8. The oscilloscope based on the long afterglow luminescent material according to claim 7, characterized in that: The light beam output by the first laser and the light beam output by the second laser are combined into one beam through a beam combiner.

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