A knob display screen based on a pair-of-eyes light sensor

Abstract

The utility model relates to display screen technical field discloses a knob display screen based on the rotation resistance of reducing, promotion rotation fluency of opposite emission type optical sensor, including base, fixed in base's opposite emission type optical sensor, rotates and install annular rotating support of base, with annular rotating support fixed connection's knob shell, be located in the knob shell on the side of annular rotating support's back and with base fixed connection's display screen, be located between the knob shell and display screen and with opposite emission type optical sensor and display screen electric connection's main control unit, the light emission end and the light receiving end of opposite emission type optical sensor form detection channel, a plurality of through -holes are spaced apart and arranged on the annular rotating support along the circumferential direction, a plurality of through -holes divide the ring side wall of annular rotating support to form the light -transmitting area and the light -blocking area of alternate distribution, the part of annular rotating support lower part is suspended and inserts detection channel to make the light -transmitting area and the light -blocking area alternate rotation to detection channel when annular rotating support rotates.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and in particular to a rotary display screen based on a through-beam optical sensor. Background Technology

[0002] A rotary encoder display is an intelligent interactive hardware device that integrates a rotary encoder and a display screen. Users can interact with the screen by rotating or pressing a knob. The encoder includes a knob and a button. Users input precisely by rotating the knob and select options by pressing the button. The display screen then shows the content and provides feedback for confirmation. It combines the tactile feel of physical controls with the flexibility of a screen, and can be used in various scenarios such as automotive center consoles, professional audio equipment, industrial control equipment, home appliances, and computer hardware. However, when the encoder rotates, the internal metal contacts repeatedly contact and separate from gears or positioning grooves, or the gears rub against each other and mesh, producing impact or clicking sounds. The resistance to knob rotation is relatively high, making the adjustment process less smooth and affecting the user experience. Utility Model Content

[0003] Therefore, it is necessary to address the above-mentioned shortcomings by providing a rotary display screen based on a through-beam optical sensor that can reduce rotational resistance and improve rotational smoothness.

[0004] A rotary display screen based on a through-beam optical sensor includes:

[0005] Base;

[0006] A through-beam optical sensor is fixed on a base, and a detection channel is formed between the light emitting end and the light receiving end of the through-beam optical sensor;

[0007] A ring-shaped rotating bracket is rotatably mounted on the base. The ring-shaped rotating bracket has several through holes spaced apart along its circumference. The several through holes divide the ring-shaped rotating bracket's sidewalls to form alternating light-transmitting areas and light-shielding areas. A portion of the lower part of the ring-shaped rotating bracket is suspended and inserted into the detection channel, so that the light-transmitting area and the light-shielding area alternately rotate to the detection channel when the ring-shaped rotating bracket rotates.

[0008] The knob housing is located on the side of the annular rotating bracket facing away from the base and is fixedly connected to the annular rotating bracket.

[0009] The display screen is located on the side of the knob housing facing away from the annular rotating bracket and is fixedly connected to the base;

[0010] The main controller is located between the knob housing and the display screen and is electrically connected to the through-beam light sensor and the display screen.

[0011] In one embodiment, the knob housing includes a cylindrical body, a mounting plate fixed to one end of the body and fixedly connected to an annular rotating bracket, and the mounting plate has a through hole for threading a wire connecting the through-beam optical sensor and the main controller.

[0012] In one embodiment, the display screen is inserted into the body and fixedly connected to the base.

[0013] In one embodiment, the knob display screen further includes a protective structure, which includes a protective ring and a flared guide ring. The inner surface of the protective ring abuts against the outer ring surface of the display screen. One end of the protective ring extends out of the display surface of the display screen, and the other end of the protective ring forms a clearance gap with the end face of the main body. The large-diameter end of the guide ring is fixedly connected to the end extending from the protective ring, and the small-diameter end of the guide ring abuts against the display surface of the display screen.

[0014] In one embodiment, the through hole penetrates the end face of the annular rotating bracket adjacent to the base, or the distance from the edge of the through hole to both ends of the annular rotating bracket is greater than 0.

[0015] In one embodiment, the display screen is a touch display screen.

[0016] In one embodiment, the rotary display screen further includes a memory and a crystal oscillator. The main controller is electrically connected to the memory via a QSPI interface, and is electrically connected to the display screen via both the QSPI and I2C interfaces. The main controller is electrically connected to a through-beam optical sensor via its GPIO pins, and is electrically connected to the crystal oscillator.

[0017] In one embodiment, the memory is an SPI flash memory.

[0018] In one embodiment, the display screen includes an LCD screen, a screen chip for driving the LCD screen display, and a touch chip for collecting touch signals from the surface of the LCD screen. Both the touch chip and the screen chip are electrically connected to the main controller.

[0019] In one embodiment, the width of the detection channel is 3 mm, and the thickness of the annular sidewall of the rotating bracket is less than the width of the detection channel.

[0020] The rotary display screen based on a through-beam optical sensor of this invention uses a through-beam optical sensor in conjunction with a rotatable annular rotating bracket. When the annular rotating bracket rotates, its light-transmitting area and light-blocking area alternately pass through the detection channel on the through-beam optical sensor. During this process, the annular rotating bracket does not contact the light emitting end or the light receiving end of the through-beam optical sensor. This avoids the problem of high rotational resistance caused by the contact or friction adjustment method of metal contacts with gears or positioning grooves, and avoids the impact noise or clicking noise caused by the collision of metal contacts with gears or positioning grooves and friction between gears. This improves the smoothness of the rotary display screen's rotation adjustment and enhances the user's operating experience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the knob display screen in one embodiment of the present invention;

[0022] Figure 2 This is a front view of the knob display screen in one embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of the knob display screen being removed in one embodiment of the present invention;

[0024] Figure 4 This is a module connection diagram of the knob display screen in one embodiment of the present invention;

[0025] Figure 5 This is a circuit diagram of the main controller in one embodiment of the present invention;

[0026] Figure 6 This is a circuit diagram of a through-beam optical sensor in one embodiment of the present invention;

[0027] Figure 7 The circuit principle of the display screen is shown in one embodiment of this utility model. Figure 1 ;

[0028] Figure 8 The circuit principle of the display screen is shown in one embodiment of this utility model. Figure 2 . Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] Please combine Figure 1-4 This utility model discloses a rotary display screen based on a through-beam optical sensor that can reduce rotational resistance and improve rotational smoothness. The rotary display screen includes a base 100, a through-beam optical sensor 200, a ring-shaped rotating bracket 300, a knob shell 400, a display screen 500, and a main controller 600. The base 100 supports the other components and provides a mounting point for the rotary display screen on an external structure. In practical applications, the base 100 is fixed to an external structure (such as audio equipment or a car center console) to install the rotary display screen. The through-beam optical sensor 200 is fixed to the base 100, and a detection channel 210 is formed between the light emitting end and the light receiving end of the through-beam optical sensor 200. In this embodiment, the through-beam optical sensor 200 is disposed at the edge of the base 100 to accommodate the position of the annular rotating bracket 300. The through-beam optical sensor 200 is fixed to the base 100 by screws or glued to the base 100. An opening is formed on the side of the detection channel 210 facing away from the base 100 for the insertion of the annular rotating bracket 300. The annular rotating bracket 300 is rotatably mounted on the base 100. In this embodiment, a central shaft is fixed on the base 100, and the middle part of the annular rotating bracket 300 is sleeved on the central shaft and can rotate relative to the central shaft. That is, the central shaft provides the rotation center of the annular rotating bracket 300. To improve the smoothness of the rotation of the annular rotating bracket 300, a bearing is provided at the mating part of the annular rotating bracket 300 and the central shaft, which supports the annular rotating bracket 300 while reducing the rotational resistance of the annular rotating bracket 300. A plurality of through holes are spaced apart along the circumference of the annular rotating bracket 300, dividing the annular sidewall of the annular rotating bracket 300 to form alternating light-transmitting areas 310 and light-shielding areas 320; a portion of the lower part of the annular rotating bracket 300 is suspended and inserted into the detection channel 210, so that the light-transmitting area 310 and the light-shielding area 320 alternately rotate to the detection channel 210 when the annular rotating bracket 300 rotates. A knob housing 400 is located on the side of the annular rotating bracket 300 facing away from the base 100 and is fixedly connected to the annular rotating bracket 300; a display screen 500 is located on the side of the knob housing 400 facing away from the annular rotating bracket 300 and is fixedly connected to the base 100; a main controller 600 is located between the knob housing 400 and the display screen 500 and is electrically connected to the through-beam light sensor 200 and the display screen 500. In other words, as the knob housing 400 drives the annular rotating bracket 300 to rotate, the display screen 500 remains fixed on the base 100 and does not rotate synchronously with the knob housing 400 and the annular rotating bracket 300, thus facilitating the user's observation of the display screen 500's image. In this embodiment, the display screen 500 can be fixed on the central axis or fixedly connected to other fixed structures on the central axis to achieve positioning and installation of the display screen 500.

[0031] When the knob display is in use, when the knob housing 400 is rotated, the annular rotating bracket 300 rotates simultaneously with the knob housing 400. When the light-transmitting area 310 rotates into the detection channel 210, the light beam emitted by the light-emitting end of the through-beam light sensor 200 is received by the light-receiving end, and the through-beam light sensor 200 sends a high-level signal to the main controller 600. When the light-shielding area 320 rotates into the detection channel 210, the light beam emitted by the light-emitting end of the through-beam light sensor 200 is blocked by the annular sidewall of the annular rotating bracket 300 (i.e., blocked by the light-shielding area 320), and the light-receiving end cannot receive the light beam, and the through-beam light sensor 200 sends a low-level signal to the main controller 600. In this way, during the rotation of the annular rotating bracket 300 driven by the knob housing 400, the through-beam light is transmitted to the main controller 600, and the main controller 600 can obtain the rotation status of the knob display by decoding the pulse signal. In this embodiment, the light emitting end of the through-beam optical sensor 200 can be located inside the annular rotating bracket 300, and the light receiving end can be located outside the annular rotating bracket 300. Alternatively, the light emitting end of the through-beam optical sensor 200 can be located outside the annular rotating bracket 300, and the light receiving end can be located inside the annular rotating bracket 300.

[0032] In one embodiment, the width of the detection channel 210 is 3mm, and the thickness of the annular sidewall of the annular rotating bracket 300 is less than the width of the detection channel 210. That is, when a portion of the lower part of the annular rotating bracket 300 is inserted into the detection channel 210, there are gaps between the lower end of the annular rotating bracket 300 and its inner and outer sidewalls and the through-beam photosensitive sensor 200. This prevents the annular rotating bracket 300 from colliding with the through-beam photosensitive sensor 200 during rotation, thereby improving the smoothness of the knob display rotation. Of course, in actual production, the width of the detection channel 210 can also be other values ​​depending on the type of through-beam photosensitive sensor 200 selected, which will not be elaborated here.

[0033] The knob housing 400 includes a cylindrical main body and a mounting plate fixed to one end of the main body and fixedly connected to the annular rotating bracket 300. The mounting plate has a through-hole for threading the connection cable between the through-beam optical sensor 200 and the main controller 600. Furthermore, the diameter of the main body is larger than the diameter of the annular rotating bracket 300, so that the knob display screen has a larger grippable area, reducing the difficulty of operating the knob display screen. In this embodiment, the annular rotating bracket 300 and the knob housing 400 are integrally formed, that is, the annular rotating bracket 300 constitutes a part of the knob housing 400. The display screen 500 is inserted into the main body and fixedly connected to the base 100. Thus, on the one hand, the main body of the knob housing 400 can shield the connection between the display screen 500 and the base 100 to reduce the impact on the appearance of the knob display screen; on the other hand, the main body of the knob housing 400 can also limit and protect the display screen 500, thereby extending the service life of the display screen 500.

[0034] The knob display screen also includes a protective structure 700, which protects the end of the display screen 500 from damage caused by impacts. The protective structure 700 includes a protective ring 710 and a flared guide ring 720. The inner surface of the protective ring 710 abuts against the outer ring surface of the display screen 500. One end of the protective ring 710 extends beyond the display surface of the display screen 500, and the other end of the protective ring 710 forms a clearance gap with the end face of the main body to prevent interference between the knob housing 400 and the protective ring 710 during rotation, ensuring smooth rotation of the knob housing 400. The large-diameter end of the guide ring 720 is fixedly connected to the end extending from the protective ring 710, and the small-diameter end of the guide ring 720 abuts against the display surface of the display screen 500. In this embodiment, on the one hand, the small-diameter end of the guide ring 720 is used to position the display screen 500 to prevent the display screen 500 from shaking or shifting during use. On the other hand, the flared structure of the guide ring 720 can avoid obstructing the display content of the display screen 500, so that the user can fully and clearly see the display content of the display screen 500.

[0035] In one embodiment, the through hole penetrates the end face of the annular rotating bracket 300 adjacent to the base 100, or the distance from the edge of the through hole to both ends of the annular rotating bracket 300 is greater than 0. That is to say, the through hole can be a U-shaped hole penetrating one end face of the annular rotating bracket 300 adjacent to the base 100, or a closed hole that does not penetrate one end face of the annular rotating bracket 300 adjacent to the base 100. The through hole can be a square hole, or a regular hole such as a circular hole, an elliptical hole, a regular pentagonal hole, a regular hexagonal hole, etc., or an irregular hole, which will not be described in detail here.

[0036] In this embodiment, the display screen 500 is a touch display screen. By setting the display screen 500 as a touch display screen, which has touch selection and display functions, when the user selects different content on the display surface of the display screen 500, they can directly click the corresponding icon on the display surface without having to switch icons step by step using a knob and then press the screen to confirm. This reduces the number of user operation steps and lowers the difficulty of operation, thereby improving the efficiency of operation and the user experience.

[0037] The following combination Figure 4-8 The circuit structure of this solution is described below. Specifically, the rotary display screen also includes a memory and a crystal oscillator 800. The main controller 600 is electrically connected to the memory via a QSPI interface, and is electrically connected to the display screen 500 via both the QSPI and I2C interfaces. The main controller 600 is electrically connected to the through-beam photosensitive sensor 200 via its GPIO pins, and is also electrically connected to the crystal oscillator 800. Furthermore, the memory is an SPI flash memory 900. In this embodiment, by using an SPI flash memory 900 connected to the main controller 600, which is a flash memory chip read and written via the SPI protocol, it can be used to store data in the main controller 600. The data stored in this SPI flash memory 900 will not be lost even when the device is powered off, ensuring the reliability of data storage and increasing the storage space of the rotary display screen. In this embodiment, the capacity of the SPI flash memory 900 is 16MB. The crystal oscillator 800 provides a stable and accurate clock reference signal to the main controller 600. Through the continuous and stable pulse signals it generates, it serves to provide a synchronization clock, determine the instruction execution speed, provide a timing reference for the communication interface, and provide a time reference for real-time functions. The display screen 500 includes an LCD screen, a screen chip for driving the LCD screen display, and a touch chip for acquiring touch signals from the LCD screen surface. Both the touch chip and the screen chip are electrically connected to the main controller 600. Specifically, in this embodiment, the main controller 600 uses a highly integrated system-on-a-chip (SoC) of model JL7012A6S, which has 640KB of built-in SRAM (Static Random Access Memory). The main controller 600 controls the LCD screen for display via the QSPI protocol; communicates with the touch chip via the I2C (IIC) protocol to determine touch actions and perform interactions; and receives pulse signals from the through-beam photosensitive sensor 200 via GPIO to determine and interact with the rotation of the knob housing and the ring-shaped rotating bracket.

[0038] Please combine further Figure 4-8 , Figure 5U1 in the main chip is the unit that communicates with the main controller 600 and the through-beam photosensitive sensor 200, transmits display data to the LCD screen, and interacts with the touch chip (i.e., the main chip). VCC3V3 is the input voltage, which is filtered by capacitors C4 and C5 before flowing to pin 4 (VBAT) of the main chip to provide power. After internal power conversion, the main chip's internal power supply is filtered by pin 3 (SW) through inductor L1, capacitor C6, and capacitor C7, and the resulting power supply DCVDD powers pin 7 (DCVDD) of the main chip. Pins 2 (PGND) and 39 (AVSS) of the main chip are connected to GND to provide a reference level for the chip. Pins 11 (PB4) and 12 (PB3) of the main chip are connected to the signal output pins of the through-beam photosensitive sensor 200 to receive pulse signals TCUT_E2 and TCUT_E1 from the through-beam photosensitive sensor 200. Pin 31 (LCD_SPICLK) of the main chip is the clock signal pin for the QSPI interface of the LCD screen, providing the clock signal LCD_CLK to the screen. Pins 30 (LCD_SPID0A), 29 (LCD_SPID1A), 28 (LCD_SPID2A), and 27 (LCD_SPID3A) of the main chip are the data pins for the QSPI interface of the LCD screen, providing the data signals LCD_DO0, LCD_DO1, LCD_DO2, and LCD_DO3 to the screen, respectively. Pin 32 (PA6) of the main chip is the chip select signal pin for the QSPI interface of the LCD screen, providing the chip select signal LCD_CS to the screen. Pin 33 (PA5) of the main chip is the TE pin connected to the screen, used to receive the synchronization signal LCD_TE from the screen. Pin 34 (PA4) of the main chip is the reset signal pin, providing the reset signal LCD_RST to the screen. Pins 49 (PG3), 48 (PG4), 47 (PG5), and 46 (PG6) of the main chip are used as the IIC clock signal TP_SCL, IIC data signal TP_SDA, terminal signal TP_INT, and reset signal TP_RST for the touch part, respectively.

[0039] Figure 6U2 in the diagram is a through-beam photoelectric sensor, specifically a miniature dual-channel transmissive photoelectric sensor, model TCUT1300. The external voltage VCC5V, after being current-limited by resistor R3, provides power input to pin 4 (emitter / cathode A of the photodiode). Pin 6 (emitter / cathode K of the photodiode) is connected to GND, which is the signal reference level. Pin 5 (NC) indicates no electrical connection. The external voltage VCC5V, after being filtered by capacitor C3, provides power input to pin 3 (receiver / collector). Power is then supplied through internal phototransistors, from pin 2 (emitter E2) to ground via resistor R4, and from pin 1 (emitter E1) to ground via resistor R5 (the through-beam photoelectric sensor includes one emitter and two receivers). Resistors R4 and R5 adjust the output of U2, matching the voltages of E1 and E2 with the main chip's voltage. When the light emitting end and the light receiving end of the through-beam optical sensor are in the light-transmitting area of ​​the annular rotating bracket, the light beam emitted by the light emitting end will be received by the two light receiving ends through the light-transmitting area, and the levels of E1 and E2 will be high. When the light emitting end and the light receiving end of the through-beam optical sensor are in the light-blocking area of ​​the annular rotating bracket, the two light receiving ends cannot receive the light beam emitted by the light emitting end, and the levels of E1 and E2 will be low. When the knob is rotated, since the emitted light of the through-beam optical sensor is alternately received by the light receiving ends, the through-beam optical sensor will output alternating high and low level signals to the main chip. Among them, resistors R1 and R2 buffer and protect the signals TCUT_E2 and TCUT_E1 output by the through-beam optical sensor, respectively; capacitors C1 and C2 suppress interference for the signals TCUT_E2 and TCUT_E1 output by the through-beam optical sensor, respectively; and anti-static components D3, D1, and D2 provide electrostatic protection for the transmitter A and receiver E2 and E1 of the through-beam optical sensor, respectively.

[0040] Combination Figure 7-8 , Figure 7CON1 is the connector interface for the LCD screen. Resistors R7-R18 are resistors used for protection and signal matching. The external voltage VCC3V3, after being current-limited by resistor R6, is filtered by capacitors C9 and C10 before flowing to VCC_LCD, which is connected to pins 2 (VDDA) and 3 (VDDI) of connector interface CON1 to power the screen chip. This external voltage, after being filtered by capacitors C11 and C12, flows to VCC_BL, which is connected to pin 17 (A) of connector interface CON1 to power the screen backlight. This external voltage, after being filtered by capacitors C13 and C14, flows to VCC_TOUCH, which is connected to pin 19 (VDD) of connector interface CON1 to power the touch chip. Pins 1, 4, 7, 9, 14, 16, 18, and 20 of connector interface CON1 are all connected to GND, which is the reference level. LCD_RST is the screen reset signal, LCD_CS is the screen chip select signal, and LCD_TE provides a data synchronization signal between the main controller and the screen. LCD_CLK provides a clock signal for transmitting display data between the main chip and the display screen. LCD_DO0, LCD_DO1, LCD_DO2, and LCD_DO3 are data for transmitting display content between the main chip and the display screen. TP_SDA and TP_SCL are the data and clock signals for the IIC interface used for communication between the through-beam photodetector and the main chip, respectively, and are pulled up to VCC_3V3 through resistors R19 and R20 to stabilize communication. TP_INT is the touch interrupt signal, pulled up to VCC_3V3 through resistor R21, and TP_RST is the touch reset signal.

[0041] The rotary display screen based on the through-beam optical sensor 200 of this utility model uses the through-beam optical sensor 200 in conjunction with a rotatable annular rotating bracket 300. When the annular rotating bracket 300 rotates, its light-transmitting area 310 and light-blocking area 320 alternately pass through the detection channel 210 on the through-beam optical sensor 200. During this process, the annular rotating bracket 300 does not contact the light emitting end and the light receiving end of the through-beam optical sensor 200. This avoids the problem of high rotational resistance caused by the contact or friction adjustment method of metal contacts with gears or positioning grooves, and avoids the impact sound or clicking sound caused by the collision of metal contacts with gears or positioning grooves and friction between gears. This improves the smoothness of the rotary display screen rotation adjustment and helps to enhance the user's operating experience.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rotary display screen based on a through-beam optical sensor, characterized in that, include: Base; A through-beam optical sensor is fixed on a base, and a detection channel is formed between the light emitting end and the light receiving end of the through-beam optical sensor; A ring-shaped rotating bracket is rotatably mounted on the base. The ring-shaped rotating bracket has several through holes spaced apart along its circumference. The several through holes divide the ring-shaped rotating bracket's sidewalls to form alternating light-transmitting areas and light-shielding areas. A portion of the lower part of the ring-shaped rotating bracket is suspended and inserted into the detection channel, so that the light-transmitting area and the light-shielding area alternately rotate to the detection channel when the ring-shaped rotating bracket rotates. The knob housing is located on the side of the annular rotating bracket facing away from the base and is fixedly connected to the annular rotating bracket. The display screen is located on the side of the knob housing facing away from the annular rotating bracket and is fixedly connected to the base; The main controller is located between the knob housing and the display screen and is electrically connected to the through-beam light sensor and the display screen.

2. The rotary display screen based on a through-beam optical sensor according to claim 1, characterized in that, The knob housing includes a cylindrical body and a mounting plate fixed to one end of the body and fixedly connected to an annular rotating bracket. The mounting plate has a through hole for threading the wire connecting the through-beam optical sensor and the main controller.

3. The rotary display screen based on a through-beam optical sensor according to claim 2, characterized in that, The display screen is inserted into the main body and fixedly connected to the base.

4. The rotary display screen based on a through-beam optical sensor according to claim 3, characterized in that, The knob display also includes a protective structure, which includes a protective ring and a flared guide ring. The inner surface of the protective ring abuts against the outer ring surface of the display. One end of the protective ring extends out of the display surface of the display, and the other end of the protective ring forms a clearance gap with the end face of the main body. The large-diameter end of the guide ring is fixedly connected to the end of the protective ring that extends out, and the small-diameter end of the guide ring abuts against the display surface of the display.

5. The rotary display screen based on a through-beam optical sensor according to claim 1, characterized in that, The through hole penetrates the end face of the annular rotating bracket adjacent to the base, or the distance from the edge of the through hole to both ends of the annular rotating bracket is greater than 0.

6. The rotary display screen based on a through-beam optical sensor according to claim 1, characterized in that, The display screen is a touch screen.

7. The rotary display screen based on a through-beam optical sensor according to claim 6, characterized in that, The rotary display screen also includes a memory and a crystal oscillator. The main controller is electrically connected to the memory via a QSPI interface, and is electrically connected to the display screen via both a QSPI interface and an I2C interface. The main controller is electrically connected to a through-beam optical sensor via its GPIO pins, and is also electrically connected to the crystal oscillator.

8. The rotary display screen based on a through-beam optical sensor according to claim 7, characterized in that, The memory is an SPI flash memory.

9. The rotary display screen based on a through-beam optical sensor according to claim 7, characterized in that, The display screen includes an LCD screen, a screen chip for driving the LCD screen display, and a touch chip for collecting touch signals from the surface of the LCD screen. Both the touch chip and the screen chip are electrically connected to the main controller.

10. The rotary display screen based on a through-beam optical sensor according to claim 1, characterized in that, The detection channel has a width of 3mm, and the thickness of the annular sidewall of the rotating bracket is less than the width of the detection channel.

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