AI projection translation system

Abstract

This invention discloses an AI projection translation system, relating to the field of language translation. The system includes a motherboard, a first voice board, and a second voice board. The first and second voice boards have identical structures and are respectively positioned on opposite sides of a light screen. Compared with existing technologies, the advantages of this invention are: it achieves bidirectional visual translation projection through a single optical engine combined with a light screen and mirroring technology; it replaces the traditional dual-screen structure with a single projection optical engine, significantly reducing the number of display modules and related circuits while ensuring visibility from both sides; it projects the translated text onto a transparent projection screen and performs real-time mirroring, ensuring that the text seen by users on both sides of the screen is readable in the forward direction, eliminating the need to turn around or adapt to reversed content; by projecting the translation onto a large screen, both parties can clearly view it from opposite ends of the conference table, overcoming the limitation of close-range viewing on small screens, making it suitable for various occasions such as meetings, negotiations, and teaching.

Description

Technical Field

[0001] This invention relates to the field of language translation, specifically an AI projection translation system. Background Technology

[0002] In existing technologies, with the increasing frequency of global exchanges, cross-language communication devices such as translation machines have been widely used in scenarios such as tourism, business negotiations, and international conferences. Traditional translation machines typically employ a dual-screen design, where each user is equipped with an independent display screen to show the translation results. This type of solution has the following significant drawbacks:

[0003] High cost: The dual-screen design requires two sets of display modules and related driving circuits, which significantly increases material and production costs, and the product price is usually high (up to several thousand yuan online), which is not conducive to popularization.

[0004] Limited screen size: Due to portability requirements, traditional translators typically have small screens (e.g., 4.1 inches), with limited text display area. Users need to get close to the device to read clearly, making them unsuitable for use in scenarios with multiple users or at a greater distance.

[0005] Usage limitations: Due to the small screen size, users must stand close to the device in situations where the distance is relatively far, such as at a conference table, which affects the naturalness and efficiency of communication.

[0006] In summary, existing translation devices are expensive, have limited screen size, and are limited in their application scenarios, and therefore need improvement. Summary of the Invention

[0007] The purpose of this invention is to provide an AI projection translation system to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An AI projection translation system includes a motherboard, a first voice board, and a second voice board; the first voice board and the second voice board have the same structure and are respectively set on opposite sides of a light screen;

[0010] The first voice board and the second voice board are used to collect the first voice signal (such as Chinese) and the second voice signal (such as English) of the two parties in the conversation, respectively, and convert the first voice signal and the second voice signal into the corresponding first digital signal and second digital signal;

[0011] The motherboard is connected to the first voice board and the second voice board respectively, and is used to receive the first digital signal and the second digital signal, and translate them into the third digital signal and the fourth digital signal of the target language respectively; and project the corresponding text of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal onto the same light screen;

[0012] When the first voice board acquires the first voice signal, the motherboard projects the first text corresponding to the first digital signal onto the side of the light screen facing the first voice board in a forward orientation, and projects the third text corresponding to the third digital signal onto the side of the light screen facing the first voice board in a mirror orientation (i.e., the projection is forward orientation when viewed from the side of the second voice board).

[0013] When the second voice board acquires the second voice signal, the motherboard projects the second text corresponding to the second digital signal onto the side of the light screen facing the second voice board in a forward orientation, and projects the fourth text corresponding to the fourth digital signal onto the side of the light screen facing the second voice board in a mirror orientation (i.e., the projection is forward orientation when viewed from the side of the first voice board).

[0014] Since the light screen is a transparent medium and the two parties in the dialogue are located on opposite sides of the light screen, the same text appears upright when viewed from one side and is mirrored when viewed from the other side. By mirroring the translated text, the translated text appears upright when viewed by the other party, thus achieving real-time translation display that is readable in both directions.

[0015] As a further embodiment of the present invention: the motherboard includes:

[0016] The power supply module is used to introduce 5V voltage, convert it to 3.3V to power the main control module, and convert it to 10V to power the projection module.

[0017] The main control module is used to collect the first and second voice signals from both parties in the dialogue, upload the first and second voice signals to the large model via Wi-Fi, and receive the third and fourth digital signals from the large model based on the first and second voice signals respectively into the target language. The first, second, third and fourth digital signals are then output to the projection module.

[0018] The projection module is used to project the corresponding text of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal onto the same light screen;

[0019] The output of the power supply module is connected to the input of the main control module (internal connection port of the motherboard, input) and the first input of the projection module. The output of the main control module (internal connection port of the motherboard, output) is connected to the second input of the projection module.

[0020] As a further embodiment of the present invention: the power supply module includes interface J1, chip U2, and chip U3. Interface J1 is a TYPE-C interface, model USB-C-USB2.0-16P. Chip U2 is model MT3608, and chip U3 is model ETA3417S2F. After voltage is introduced into interface J1, pin A4 of interface J1 outputs 5V voltage to pin 4 of chip U3 and pin 5 of chip U2 through diode D5.

[0021] Pin 4 of chip U3 is connected to pin 1 of chip U3 via resistor R7. Pin 3 of chip U3 is connected to one end of inductor L2. The other end of inductor L2 is connected to one end of resistor R12, one end of capacitor C14, one end of capacitor C15, one end of capacitor C16, and the first input terminal of the main control module. The other end of capacitor C14, the other end of capacitor C15, and the other end of capacitor C16 are grounded. The other end of resistor R12 is connected to one end of resistor R13 and pin 5 of chip U3. The other end of resistor R13 is grounded.

[0022] Pin 4 of chip U2 is supplied with 5V voltage through resistor R1. Pin 1 of chip U2 is connected to one end of inductor L1 and the positive terminal of diode D1. The other end of inductor L1 is connected to pin 5 of chip U2. The negative terminal of diode D1 is connected to one end of resistor R5, one end of capacitor C4, and the first input terminal of the projection module. The other end of resistor R5 is connected to one end of resistor R4 and pin 3 of chip U2. The other end of capacitor C4 is grounded.

[0023] As a further embodiment of the present invention: the main control module includes a chip U1, the model of which is ESP32-S3-WROOM-1. Pin 2 of chip U1 is used as an internal input terminal (internal connection port of the motherboard, input terminal) and connected to the output terminal of the power supply module. Pins IO4, IO5, IO6, and IO7 of chip U1 are used as the first set of external connection ports of the motherboard and connected to the first voice board. Pins RX0, TX0, IO1, and IO2 of chip U1 are used as the second set of external connection ports of the motherboard and connected to the second voice board. Pins IO21, IO47, IO45, IO48, IO38, IO18, IO10, IO8, IO11, IO9, IO12, IO15, IO3, IO16, IO46, IO17, IO14, IO13, IO39, and IO40 of chip U1 are used as internal output terminals (internal connection ports of the motherboard, output terminals) and connected to the second input terminal of the projection module.

[0024] As a further embodiment of the present invention: the projection module includes connector J6, the model of connector J6 is HC-FPC-03-09-35RLTAG, pin 1 of connector J6 is connected to the output terminal of the power supply module, and the DATA-R1, DATA-R2, DATA-R3, DATA-R4, DATA-R5, DATA-G0, DATA-G1, DATA-G2, DATA-G3, DATA-G4, DATA-G5, DATA-B1, DATA-B2, DATA-B3, DATA-B4, DATA-B5, DE, PCLK, IIC-SCL, and IIC-SDA pins of connector J6 are connected to the onboard output terminal of the main control module. Connector J6 is connected to an external optical engine, which projects the corresponding text of the first digital signal, the second digital signal, the third digital signal, and the fourth digital signal onto the same light screen.

[0025] As a further aspect of the present invention: the voice board includes:

[0026] The voice receiving module is used to recognize voice through a microphone, collect the first or second voice signals from both parties in the conversation, and output them to the voice control module.

[0027] The voice control module is used to convert a first voice signal or a second voice signal into a first digital signal or a second digital signal and output it to the motherboard.

[0028] The output of the voice receiving module is connected to the input of the voice control module.

[0029] As a further embodiment of the present invention: the voice receiving module includes an interface J10, an external microphone connected to the interface J10 to recognize sound, a first end of the interface J10 connected to the input end of the voice control module through a capacitor C30, and a second end of the interface J10 connected to the input end of the voice control module through a capacitor C31.

[0030] As a further aspect of the present invention: the voice control module includes a chip U5, the model of which is CI1302. The MIC1-P and MIC1-N pins of the chip U5 are connected to the output of the voice receiving module, and the CI-UART1-TX, CI-UART1-RX, CI-UART2-TX, and CI-UART2-RX pins of the chip U5 are connected to the motherboard (specifically, the external connection port of the main control module's motherboard).

[0031] As a further embodiment of the present invention: the voice board further includes a voice output module. When the motherboard outputs a third digital signal or a fourth digital signal to the voice control module, and the voice control module converts the third digital signal or the fourth digital signal into a third voice signal or a fourth voice signal, the voice output module is used to convert the third voice signal or the fourth voice signal into voice output to realize real-time voice translation.

[0032] The voice output module includes chip U6, model FM8002A. Pin 1 of chip U6 is connected to the MUTE pin of chip U5. Pin 4 of chip U6 is connected to one end of resistor R26 and one end of resistor R27. The other end of resistor R26 is connected to the HPOUT pin of chip U5 through capacitor C26. Pin 5 of chip U6 is connected to the other end of resistor R27 and one end of resistor R35. The other end of resistor R35 is connected to the second terminal of interface J8 and one end of capacitor C37. Pin 8 of chip U6 is connected to one end of resistor R34. The other end of resistor R34 is connected to one end of capacitor C36 and pin 1 of interface J8. The other end of capacitor C36 is grounded, and the other end of capacitor C37 is grounded. An external speaker is connected to interface J8.

[0033] As a further aspect of the present invention, the light screen is a projection screen based on the projection principle.

[0034] Compared with existing technologies, the advantages of this invention are as follows: This invention achieves bidirectional visual translation projection by combining an optical engine with a light screen and mirroring technology; it uses a single projection optical engine, combined with optical design and a transparent screen, to replace the traditional dual-screen structure, significantly reducing the number of display modules and related circuits while ensuring visibility from both sides, effectively reducing material and production costs; the translated text is projected onto a transparent projection screen and processed in real time, so that the text seen by users on both sides of the screen is readable in the forward direction, without the need to turn around or adapt to reversed content, greatly improving the naturalness and fluency of cross-language dialogue; by projecting the translated text onto a larger screen (such as 22cm×30cm), both parties can clearly view it from both ends of the conference table, overcoming the limitation of small screens requiring close-range viewing, and is suitable for various occasions such as meetings, negotiations, and teaching. Attached Figure Description

[0035] Figure 1 This is a circuit diagram of an AI projection translation system.

[0036] Figure 2 This is a schematic diagram of text projection on the A-side light screen.

[0037] Figure 3 This is a schematic diagram of text projection on the B-side light screen. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1 , Figure 2 and Figure 3 An AI projection translation system includes a motherboard, a first voice board, and a second voice board; the first voice board and the second voice board have the same structure and are respectively set on opposite sides of the light screen;

[0040] The first voice board and the second voice board are used to collect the first voice signal (such as Chinese) and the second voice signal (such as English) of the two parties in the conversation, respectively, and convert the first voice signal and the second voice signal into the corresponding first digital signal and second digital signal;

[0041] The motherboard is connected to the first voice board and the second voice board respectively, and is used to receive the first digital signal and the second digital signal, and translate them into the third digital signal and the fourth digital signal of the target language respectively; and project the corresponding text of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal onto the same light screen;

[0042] When the first voice board acquires the first voice signal, the motherboard projects the first text corresponding to the first digital signal onto the side of the light screen facing the first voice board in a forward orientation, and projects the third text corresponding to the third digital signal onto the side of the light screen facing the first voice board in a mirror orientation (i.e., the projection is forward orientation when viewed from the side of the second voice board).

[0043] When the second voice board acquires the second voice signal, the motherboard projects the second text corresponding to the second digital signal onto the side of the light screen facing the second voice board in a forward orientation, and projects the fourth text corresponding to the fourth digital signal onto the side of the light screen facing the second voice board in a mirror orientation (i.e., the projection is forward orientation when viewed from the side of the first voice board).

[0044] Since the light screen is a transparent medium and the two parties in the dialogue are located on opposite sides of the light screen, the same text appears upright when viewed from one side and is mirrored when viewed from the other side. By mirroring the translated text, the translated text appears upright when viewed by the other party, thus achieving real-time translation display that is readable in both directions.

[0045] In this embodiment: Please refer to Figure 1 The motherboard includes:

[0046] The power supply module is used to introduce 5V voltage, convert it to 3.3V to power the main control module, and convert it to 10V to power the projection module.

[0047] The main control module is used to collect the first and second voice signals from both parties in the dialogue, upload the first and second voice signals to the large model via Wi-Fi, and receive the third and fourth digital signals from the large model based on the first and second voice signals respectively into the target language. The first, second, third and fourth digital signals are then output to the projection module.

[0048] The projection module is used to project the corresponding text of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal onto the same light screen;

[0049] The output of the power supply module is connected to the input of the main control module (internal connection port of the motherboard, input) and the first input of the projection module. The output of the main control module (internal connection port of the motherboard, output) is connected to the second input of the projection module.

[0050] In this embodiment: Please refer to Figure 1 The power supply module includes interface J1, chip U2, and chip U3. Interface J1 is a TYPE-C interface, model USB-C-USB2.0-16P. Chip U2 is model MT3608, and chip U3 is model ETA3417S2F. After voltage is introduced into interface J1, pin A4 of interface J1 outputs 5V voltage to pin 4 of chip U3 and pin 5 of chip U2 through diode D5.

[0051] Pin 4 of chip U3 is connected to pin 1 of chip U3 via resistor R7. Pin 3 of chip U3 is connected to one end of inductor L2. The other end of inductor L2 is connected to one end of resistor R12, one end of capacitor C14, one end of capacitor C15, one end of capacitor C16, and the first input terminal of the main control module. The other end of capacitor C14, the other end of capacitor C15, and the other end of capacitor C16 are grounded. The other end of resistor R12 is connected to one end of resistor R13 and pin 5 of chip U3. The other end of resistor R13 is grounded.

[0052] Pin 4 of chip U2 is supplied with 5V voltage through resistor R1. Pin 1 of chip U2 is connected to one end of inductor L1 and the positive terminal of diode D1. The other end of inductor L1 is connected to pin 5 of chip U2. The negative terminal of diode D1 is connected to one end of resistor R5, one end of capacitor C4, and the first input terminal of the projection module. The other end of resistor R5 is connected to one end of resistor R4 and pin 3 of chip U2. The other end of capacitor C4 is grounded.

[0053] Interface J1 introduces a 5V voltage, which is then split into two paths after passing through the reverse polarity protection diode D5. The first path supplies a step-down circuit centered around chip U3, stabilizing the 5V input to a 3.3V output. The second path supplies a boost circuit centered around chip U2, increasing the 5V input to approximately 10V output. It is worth noting that the 5V voltage output from diode D5 also directly powers the two voice boards via the connection interfaces between the motherboard and the voice board (such as 6-pin interfaces J4 and J5).

[0054] In this embodiment: Please refer to Figure 1 The main control module includes chip U1, model number ESP32-S3-WROOM-1. Pin 2 of chip U1 serves as an internal input (internal connection port on the motherboard) connected to the output of the power supply module. Pins IO4, IO5, IO6, and IO7 of chip U1 serve as the first set of external connection ports on the motherboard, connecting to the first voice board. Pins RX0, TX0, IO1, and IO2 of chip U1 serve as the second set of external connection ports on the motherboard, connecting to the second voice board. Pins IO21, IO47, IO45, IO48, IO38, IO18, IO10, IO8, IO11, IO9, IO12, IO15, IO3, IO16, IO46, IO17, IO14, IO13, IO39, and IO40 of chip U1 serve as internal outputs (internal connection ports on the motherboard), connecting to the second input of the projection module.

[0055] The IO4, IO5, IO6, and IO7 pins of chip U1 are configured as a group of UART communication and connected to the first voice board through interface J5; the RX0, TX0, IO1, and IO2 pins of chip U1 are configured as a second group of UART communication and connected to the second voice board through interface J4.

[0056] To drive the projection, numerous high-speed GPIO pins of chip U1 (IO21, IO47, IO45, IO48, IO38, IO18, IO10, IO8, IO11, IO9, IO12, IO15, IO3, IO16, IO46, IO17, IO14, IO13, IO39, and IO40) are configured as an RGB parallel data bus, pixel clock (PCLK), data enable (DE), and I2C (IIC-SCL, IIC-SDA) control signals. These signal lines are directly connected to connector J6 of the projection module, forming a complete display driving channel.

[0057] In this embodiment: Please refer to Figure 1The projection module includes connector J6, model number HC-FPC-03-09-35RLTAG. Pin 1 of connector J6 is connected to the output of the power supply module. Pins DATA-R1, DATA-R2, DATA-R3, DATA-R4, DATA-R5, DATA-G0, DATA-G1, DATA-G2, DATA-G3, DATA-G4, DATA-G5, DATA-B1, DATA-B2, DATA-B3, DATA-B4, DATA-B5, DE, PCLK, IIC-SCL, and IIC-SDA of connector J6 are connected to the onboard output of the main control module. Connector J6 is connected to an external optical engine, which projects the corresponding text of the first, second, third, and fourth digital signals onto the same light screen.

[0058] The projection module is primarily represented by connector J6, which connects the motherboard to the external optical engine. Numerous data pins on the connector are connected to the corresponding RGB data output pins of the main control module, used to transmit color information for each pixel. Additionally, the control pins DE (data enable) and PCLK (pixel clock) are connected to their corresponding pins on the main control module to synchronize data transmission. The I2C pins (IIC-SCL, IIC-SDA) are used by the motherboard to configure parameters such as optical engine initialization and brightness adjustment. Through connector J6, the motherboard transmits the processed video signal and power to the optical engine assembly, which then completes the final projection imaging.

[0059] In this embodiment: Please refer to Figure 1 The voice board includes:

[0060] The voice receiving module is used to recognize voice through a microphone, collect the first or second voice signals from both parties in the conversation, and output them to the voice control module.

[0061] The voice control module is used to convert a first voice signal or a second voice signal into a first digital signal or a second digital signal and output it to the motherboard.

[0062] The output of the voice receiving module is connected to the input of the voice control module.

[0063] In this embodiment: Please refer to Figure 1 The voice receiving module includes an interface J10, which is connected to an external microphone to recognize sound. The first end of the interface J10 is connected to the input end of the voice control module through a capacitor C30, and the second end of the interface J10 is connected to the input end of the voice control module through a capacitor C31.

[0064] One signal terminal of interface J10 is connected to the positive differential input terminal (e.g., MIC1-P pin) of the voice control chip U5 via a DC blocking capacitor C30, while the other signal terminal is connected to the negative differential input terminal (e.g., MIC1-N pin) via another DC blocking capacitor C31. This differential input method helps suppress common-mode noise and improve the signal-to-noise ratio of voice acquisition. The values ​​of capacitors C30 and C31 ensure low impedance to the voice signal band, guaranteeing lossless signal transmission.

[0065] In this embodiment: Please refer to Figure 1 The voice control module includes chip U5, model number CI1302. The MIC1-P and MIC1-N pins of chip U5 are connected to the output of the voice receiving module, and the CI-UART1-TX, CI-UART1-RX, CI-UART2-TX, and CI-UART2-RX pins of chip U5 are connected to the motherboard (specifically, the external connection port of the main control module's motherboard).

[0066] The CI-UART1-TX and CI-UART1-RX pins (or the corresponding pins of CI-UART2) of chip U5 are connected to the UART receive and transmit pins allocated to it by the main control module of the motherboard, forming a bidirectional communication link. This link is used to upload data from the local side and to receive data translated from the other side by the motherboard (in versions that require voice broadcast).

[0067] In this embodiment: Please refer to Figure 1 The voice board also includes a voice output module. When the motherboard outputs a third digital signal or a fourth digital signal to the voice control module, and the voice control module converts the third digital signal or the fourth digital signal into a third voice signal or a fourth voice signal, the voice output module is used to convert the third voice signal or the fourth voice signal into voice output to realize real-time translation of voice.

[0068] The voice output module includes chip U6, model FM8002A. Pin 1 of chip U6 is connected to the MUTE pin of chip U5. Pin 4 of chip U6 is connected to one end of resistor R26 and one end of resistor R27. The other end of resistor R26 is connected to the HPOUT pin of chip U5 through capacitor C26. Pin 5 of chip U6 is connected to the other end of resistor R27 and one end of resistor R35. The other end of resistor R35 is connected to the second terminal of interface J8 and one end of capacitor C37. Pin 8 of chip U6 is connected to one end of resistor R34. The other end of resistor R34 is connected to one end of capacitor C36 and pin 1 of interface J8. The other end of capacitor C36 is grounded, and the other end of capacitor C37 is grounded. An external speaker is connected to interface J8.

[0069] A voice output module is added to enable real-time voice playback of the translated content. When sound playback is required, the motherboard sends the translated third or fourth digital signal via serial port to the voice control chip U5. The internal data converter (DAC) of chip U5 converts this signal back into an analog audio signal (third or fourth voice signal), which is then fed into the audio power amplifier chip U6. Chip U6, along with its peripheral resistors R26, R27, R34, R35, and capacitors C36 and C37, constitute a typical power amplifier circuit, amplifying the signal to a power level sufficient to drive the speaker (connected to interface J8).

[0070] In this embodiment, the light curtain is a projection screen based on the projection principle.

[0071] The light screen is not a traditional LCD or LED display, but a specialized screen based on projection display principles. Its physical properties include being a transparent or semi-transparent medium, allowing partial light transmission. This characteristic allows an image projected onto the screen from one side to be seen by an observer on the other side. The screen size can be designed according to the application scenario, for example, 22 cm wide and 30 cm high, much larger than a traditional translation machine screen, ensuring that both users can clearly read the projected text within a normal seating distance in environments such as conference rooms.

[0072] The working principle of this invention is as follows: The system includes a motherboard and two identical voice boards (a first voice board and a second voice board). The two voice boards are physically arranged on opposite sides of a transparent light screen, allowing for the separate acquisition of the voices of speakers A and B located on opposite sides of the light screen. The motherboard, acting as the control and processing center, is connected to the two voice boards via cables. Its workflow is as follows: When one voice board (e.g., side A) acquires the original voice (e.g., Chinese) and converts it into a digital signal, the motherboard receives this signal and uploads it to a large model via a built-in Wi-Fi module to obtain the digital signal of the translation result in the target language (e.g., English). Subsequently, the motherboard drives a single optical engine to simultaneously project the original text and the translated text onto the transparent light screen. Please refer to [link to relevant documentation]. Figure 2 and Figure 3 The key innovation lies in the orientation and mirroring of the projected content: the motherboard controls the optical engine to ensure that the original text seen by the user on side A is upright, while the English text translated for A seen by the user on side B is also displayed upright. This is achieved by projecting the translated text onto side A in a mirror manner. Due to the transparency of the light screen, the mirrored text appears upright and readable when viewed from side B, and vice versa. This allows both parties sitting opposite each other across a screen to clearly and naturally read the translated content in the other's language using only one projection system.

[0073] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0074] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An AI projection translation system, characterized in that, The AI ​​projection translation system includes a motherboard, a first voice board, and a second voice board; the first and second voice boards have the same structure and are respectively set on opposite sides of the light screen; The first voice board and the second voice board are respectively used to collect the first voice signal and the second voice signal of the two parties in the dialogue, and convert the first voice signal and the second voice signal into the corresponding first digital signal and the second digital signal. The motherboard is connected to the first voice board and the second voice board respectively, and is used to receive the first digital signal and the second digital signal, and translate them into the third digital signal and the fourth digital signal of the target language respectively; and project the corresponding text of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal onto the same light screen; When the first voice board acquires the first voice signal, the motherboard projects the first text corresponding to the first digital signal onto the side of the light screen facing the first voice board in a forward orientation, and projects the third text corresponding to the third digital signal onto the side of the light screen facing the first voice board in a mirror orientation. When the second voice board acquires the second voice signal, the motherboard projects the second text corresponding to the second digital signal onto the side of the light screen facing the second voice board in a forward orientation, and projects the fourth text corresponding to the fourth digital signal onto the side of the light screen facing the second voice board in a mirror orientation. Since the light screen is a transparent medium and the two parties in the dialogue are located on opposite sides of the light screen, the same text appears upright when viewed from one side and is mirrored when viewed from the other side. By mirroring the translated text, the translated text appears upright when viewed by the other party, thus achieving real-time translation display that is readable in both directions.

2. The AI ​​projection translation system according to claim 1, characterized in that the motherboard include: The power supply module is used to introduce 5V voltage, convert it to 3.3V to power the main control module, and convert it to 10V to power the projection module. The main control module is used to collect the first and second voice signals from both parties in the dialogue, upload the first and second voice signals to the large model via Wi-Fi, and receive the third and fourth digital signals from the large model based on the first and second voice signals respectively into the target language. The first, second, third and fourth digital signals are then output to the projection module. The projection module is used to project the corresponding text of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal onto the same light screen; The output of the power supply module is connected to the onboard input of the main control module and the first input of the projection module, and the onboard output of the main control module is connected to the second input of the projection module.

3. The AI ​​projection translation system according to claim 2, characterized in that, The power supply module includes interface J1, chip U2, and chip U3. Interface J1 is a TYPE-C interface, model USB-C-USB2.0-16P. Chip U2 is model MT3608, and chip U3 is model ETA3417S2F. After voltage is introduced into interface J1, pin A4 of interface J1 outputs 5V voltage to pin 4 of chip U3 and pin 5 of chip U2 through diode D5. Pin 4 of chip U3 is connected to pin 1 of chip U3 via resistor R7. Pin 3 of chip U3 is connected to one end of inductor L2. The other end of inductor L2 is connected to one end of resistor R12, one end of capacitor C14, one end of capacitor C15, one end of capacitor C16, and the first input terminal of the main control module. The other end of capacitor C14, the other end of capacitor C15, and the other end of capacitor C16 are grounded. The other end of resistor R12 is connected to one end of resistor R13 and pin 5 of chip U3. The other end of resistor R13 is grounded. Pin 4 of chip U2 is supplied with 5V voltage through resistor R1. Pin 1 of chip U2 is connected to one end of inductor L1 and the positive terminal of diode D1. The other end of inductor L1 is connected to pin 5 of chip U2. The negative terminal of diode D1 is connected to one end of resistor R5, one end of capacitor C4, and the first input terminal of the projection module. The other end of resistor R5 is connected to one end of resistor R4 and pin 3 of chip U2. The other end of capacitor C4 is grounded.

4. The AI ​​projection translation system according to claim 2, characterized in that, The main control module includes chip U1, model number ESP32-S3-WROOM-1. Pin 2 of chip U1 serves as the on-board input terminal, connecting to the output terminal of the power supply module. Pins IO4, IO5, IO6, and IO7 of chip U1 serve as the first set of external connection ports to the motherboard, connecting to the first voice board. Pins RX0, TX0, IO1, and IO2 of chip U1 serve as the second set of external connection ports to the motherboard, connecting to the second voice board. Pins IO21, IO47, IO45, IO48, IO38, IO18, IO10, IO8, IO11, IO9, IO12, IO15, IO3, IO16, IO46, IO17, IO14, IO13, IO39, and IO40 of chip U1 serve as the on-board output terminal, connecting to the second input terminal of the projection module.

5. The AI ​​projection translation system according to claim 2, characterized in that, The projection module includes connector J6, model number HC-FPC-03-09-35RLTAG. Pin 1 of connector J6 is connected to the output of the power supply module. Pins DATA-R1, DATA-R2, DATA-R3, DATA-R4, DATA-R5, DATA-G0, DATA-G1, DATA-G2, DATA-G3, DATA-G4, DATA-G5, DATA-B1, DATA-B2, DATA-B3, DATA-B4, DATA-B5, DE, PCLK, IIC-SCL, and IIC-SDA of connector J6 are connected to the onboard output of the main control module. Connector J6 is connected to an external optical engine, which projects the corresponding text of the first, second, third, and fourth digital signals onto the same light screen.

6. The AI ​​projection translation system according to any one of claims 1 to 5, characterized in that, The voice board includes: The voice receiving module is used to recognize voice through a microphone, collect the first or second voice signals from both parties in the conversation, and output them to the voice control module. The voice control module is used to convert a first voice signal or a second voice signal into a first digital signal or a second digital signal and output it to the motherboard. The output of the voice receiving module is connected to the input of the voice control module.

7. The AI ​​projection translation system according to claim 6, characterized in that, The voice receiving module includes an interface J10, which is connected to an external microphone to recognize sound. The first end of the interface J10 is connected to the input end of the voice control module through a capacitor C30, and the second end of the interface J10 is connected to the input end of the voice control module through a capacitor C31.

8. The AI ​​projection translation system according to claim 6, characterized in that, The voice control module includes chip U5, model number CI1302. The MIC1-P and MIC1-N pins of chip U5 are connected to the output of the voice receiving module, and the CI-UART1-TX, CI-UART1-RX, CI-UART2-TX, and CI-UART2-RX pins of chip U5 are connected to the motherboard.

9. The AI ​​projection translation system according to claim 8, characterized in that, The voice board also includes a voice output module. When the motherboard outputs a third digital signal or a fourth digital signal to the voice control module, and the voice control module converts the third digital signal or the fourth digital signal into a third voice signal or a fourth voice signal, the voice output module is used to convert the third voice signal or the fourth voice signal into voice output to realize real-time voice translation. The voice output module includes chip U6, model FM8002A. Pin 1 of chip U6 is connected to the MUTE pin of chip U5. Pin 4 of chip U6 is connected to one end of resistor R26 and one end of resistor R27. The other end of resistor R26 is connected to the HPOUT pin of chip U5 through capacitor C26. Pin 5 of chip U6 is connected to the other end of resistor R27 and one end of resistor R35. The other end of resistor R35 is connected to the second terminal of interface J8 and one end of capacitor C37. Pin 8 of chip U6 is connected to one end of resistor R34. The other end of resistor R34 is connected to one end of capacitor C36 and pin 1 of interface J8. The other end of capacitor C36 is grounded, and the other end of capacitor C37 is grounded. An external speaker is connected to interface J8.

10. The AI ​​projection translation system according to claim 1, characterized in that, The light screen is a projection screen based on the principle of projection.

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