Scenarized intelligent broadcasting system

Abstract

The invention relates to the technical field of intelligent broadcasting, in particular to a scenarized intelligent broadcasting system which comprises a point location end, a slave end, a host end and a server. The point location ends receive the data and then send the data through optical signals; the slave end receives the optical signal, decodes the optical signal to obtain data, and converts the optical signal into electric energy for power supply by using a slave end photoelectric device; data acquired by the host end is encoded and then transmitted through an optical signal; each end is connected with the server through an Ethernet bus, and all contents are maintained through a network bus. The photoelectric device has the functions of receiving optical data and photoelectric conversion energy supply; and the light source modulates transmission data and controls the coverage range during illumination, and the explanation of the tourist and the exhibit or the scenic spot is associated only through the position relationship, so that the user experience is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent broadcasting, and in particular relates to a scenario-based intelligent broadcasting system. Background Art

[0002] As the times change, more people are spending their free time traveling. Tour guides' explanations can help tourists better understand history and culture. Common wireless data transmission methods for tour explanations include radio, Bluetooth, or WiFi. In actual applications, the choice depends on the scenario. For example, Bluetooth is used for point-to-point audio transmission, while WiFi, walkie-talkies, or radio broadcasts are used for high-bandwidth data transmission.

[0003] In situations where visitors are dispersed and require fixed-point explanations (e.g., individual visitors visiting exhibition halls and attractions), the project organizer broadcasts the location of the location via radio beacons. Visitors wearing earphone receivers, when approaching a beacon, trigger the playback of a pre-stored audio file in the receiver. Problems with this approach include crosstalk between beacons, misaligned triggering, complex content management within the receiver, and the heavy workload of managing batteries across multiple beacons and a large number of receivers.

[0004] At the same time, when staff or tour guides lead the group of tourists while they walk, see and talk, they usually use a one-to-many Bluetooth or radio broadcast method to transmit the guide's voice to each tourist's headphones. The problems with this method include: 1. When multiple teams are giving presentations at the same time, they may interfere with or crosstalk each other due to the close working frequencies. 2. Radio frequency signals leak to the external environment, which lacks security and privacy; 3. It is difficult for tourists to obtain the required explanations when they leave the group for free sightseeing; 4. There is a problem of insufficient battery power during long lectures.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a scenario-based intelligent broadcasting system, which solves the problem of mutual interference or crosstalk due to the proximity of working frequency points when multiple teams give explanations at the same time. At the same time, by setting the transmission range of the optical signal, it avoids the leakage of radio frequency signals to the external environment and the lack of security and privacy; the setting of the point end can ensure that tourists can also obtain the required explanations during free tours, and by converting optical signals into electrical energy to power the equipment, users are free from the anxiety of device power.

[0007] To achieve the above object, the technical solution of the present invention is as follows: A scenario-based intelligent broadcasting system, comprising: Point end: used to receive data information and send it via optical signals; Slave end: used to receive the optical signal from the point end, extract the optical signal carrying the data information therefrom, and obtain the data information after decoding it; and convert the various received optical signals into electrical energy to provide electrical energy for the slave end.

[0008] Furthermore, the point terminal includes: Point receiving unit: used to receive data information from the host side or data information sent by the server, or data information from the host side and data information sent by the server; Point processing unit: used to decode the received data information and generate an optical signal carrying the data based on the decoded information; Point transmitting unit: used to send the optical signal generated by the point processing unit.

[0009] Furthermore, the data information is selected from at least one of multimedia data and control information.

[0010] Furthermore, it also includes: Host end: used to obtain the data information sent by the point end and send the data information via an optical signal.

[0011] Furthermore, a server is also included, and the point end, host end and slave end are connected to the server via an Ethernet bus.

[0012] Furthermore, the host side includes: Host acquisition unit: used to collect data information; Host processing unit: used to encode the data information picked up by the host acquisition unit, and perform pre-processing, feature extraction, and encryption on the data information; Host transmitting unit: used to transmit data information to the effective area of the point end through optical signals.

[0013] Furthermore, the slave end includes: Slave receiving unit: used for receiving the optical signal of the point end; Slave optoelectronic device: used to convert the optical signal received by the slave receiving unit into electrical energy and supply power to the slave end; Slave processing unit: used for decoding the optical signal received by the slave receiving unit and outputting the decoded data information.

[0014] Furthermore, it also includes: Slave energy storage unit: used to store the electrical energy converted from the optical signal and to supply power to the slave end.

[0015] Furthermore, the slave optoelectronic device is selected from: perovskite cells, silicon solar cells, polycrystalline thin film solar cells, organic polymer solar cells, nanocrystalline solar cells, organic thin film solar cells, dye-sensitized solar cells, plastic solar cells, new perovskite derivative cells, compound semiconductor solar cells or stacked cells.

[0016] Furthermore, the optical signal is emitted through a light emitting device, and the light emitting device is selected from: an LED, a spotlight or a laser transmitter.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The above-mentioned scenario-based intelligent broadcasting system provided by the present invention includes a collaborative system architecture of a point terminal, a slave terminal, a host terminal, and a server. The optoelectronic device of the slave terminal is used to convert optical signals into electrical energy for power supply, integrating optical signal data transmission with optoelectronic device energy supply technology to solve the problem of insufficient battery power supply of existing broadcasting equipment. The point terminal receives data and sends it via optical signals. The slave terminal receives the optical signal and decodes it to obtain information data, solving the lack of security and privacy caused by the leakage of radio frequency signals to the external environment. The host terminal collects data and transmits it via optical signals after encoding. Each terminal is connected to the server via an Ethernet bus, thereby improving transmission efficiency, convenient equipment management, and information security. It provides an efficient, safe, and user-friendly intelligent broadcasting solution for scenarios such as exhibition hall tours and group explanations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the architecture of a scenario-based intelligent broadcasting system provided by an embodiment of the present invention; Figure 2 A schematic diagram of the architecture of a point terminal provided in an embodiment of the present invention; Figure 3 A schematic diagram of the architecture of a slave terminal provided by an embodiment of the present invention; Figure 4 A schematic diagram of the host-side architecture provided by an embodiment of the present invention; Figure 5 An equivalent circuit diagram for controlling a light source to emit an optical signal provided by an embodiment of the present invention; Figure 6 An equivalent circuit diagram for restoring an analog signal provided by an embodiment of the present invention; Figure 7 A schematic diagram of the light conversion process of a photoelectric device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise specifically stated, the relative arrangements of components and steps, and numerical expressions set forth in these embodiments should not be construed as limiting the scope of the present invention.

[0021] The following description of exemplary embodiments is merely illustrative and is not intended to limit the present invention, its application, or use in any sense. Technologies, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but to the extent applicable, such technologies, methods, and apparatuses should be considered part of this specification.

[0022] See Figure 1 , Figure 1 This is a schematic diagram of the structure of a scenario-based intelligent broadcasting system proposed in an embodiment of the present invention. This system, by building a collaborative system architecture comprising point terminals, slave terminals, host terminals, and servers, integrates optical signal data transmission with optoelectronic device power supply, ensuring efficient data transmission while also ensuring a continuous energy supply and information security. This system is adaptable to the needs of complex scenarios such as scenic spots, museums, industrial tours, and theme parks.

[0023] like Figure 1 As shown, the scenario-based intelligent broadcasting system can specifically include: point terminals, slave terminals, host terminals, and servers, which are connected to the server via an Ethernet bus. The point terminals include point 1, point 2, point 3, and point 4, but are not limited to the above four points. Multiple points can be set according to actual needs. The host terminals include but are not limited to host 1 and host 2.

[0024] Among them, the point end can be arranged as needed in a specified scene, and the data transmission isolation of different points can be achieved by controlling the coverage of the light source; the point end is used to receive data information and send it through optical signals carrying the data information; the data information includes: multimedia data, control information, or multimedia data and control data. Figure 2 , each point of the point end specifically includes: Point receiving unit: used to receive data information from the host, including control signals, and set different point sending content according to the control signals; at the same time, it can upload the received data information to other devices in the network; and receive data information sent by the server; Among them, each point has an independent ID number. When the host sends data, it will encapsulate the complete data packet into multiple data frames according to the private protocol, and then broadcast and send them in sequence. Each data frame contains the receiving point ID, data packet information, control code and data content. After the data frame is broadcast, all points will receive it and start to interpret it. If a point finds that the receiving point ID in the data frame does not match its own ID, it will stop receiving the data frame and wait for the next data frame to arrive; if it finds that the ID matches itself, it will continue to receive the data frame. Point processing unit: used to decode the received data information and generate an optical signal carrying data after encoding; the data information includes: control information and multimedia data.

[0025] Point transmitting unit: used to transmit the data information via optical signals; the data information includes data sent by the host end to other devices in the network, and also includes content sent by the server through the network; See Figure 5 and Figure 6 When transmitting an analog signal, a DC offset is first applied to the analog signal, and the processed signal is then connected to the base of an equivalent transistor. The transistor operates in an amplifying state, and the analog signal controls the base current, which in turn regulates the collector current flowing to the light source. Because the light source's transmitted power is positively correlated with the injected current, its power curve precisely matches that of the analog signal. At the receiving end, the photodetector receives the optical signal and removes the DC offset component through a capacitive coupling circuit, directly restoring the original analog signal.

[0026] To improve interference resistance, the signal can be modulated using an AM (amplitude modulation) or FM (frequency modulation) carrier wave before being connected to an equivalent transistor for transmission. Upon receiving the signal, the receiver performs a high-pass filter to eliminate low-frequency interference before demodulating the signal to restore the original analog signal.

[0027] AM modulation is to make the amplitude of the carrier wave change according to the changing rules of the modulating signal. When the audio signal is amplitude modulated, its mathematical expression is:

[0028] in, is the carrier amplitude, is the modulation index, To modulate the audio signal, is the time variable, is the angular frequency of the carrier signal. In quadrature modulation, ,right Fourier transform gives:

[0029] in, is the spectrum representing the signal, is the carrier amplitude, is pi, and Respectively represent the carrier angular frequency and , is the modulation index, To modulate the audio signal.

[0030] The amplitude modulated signal of sinusoidal wave modulation consists of three frequency components: carrier, difference frequency between carrier and modulation frequency, and sum frequency between carrier and modulation frequency. The spectrum width occupied by the amplitude modulated wave is equal to twice the highest frequency of the modulation signal.

[0031] FM modulation can carry the signal to a higher frequency to achieve stronger anti-interference ability and larger data bandwidth than AM modulation. In FM modulation, the instantaneous frequency of the carrier determines the linear change of the modulated signal. The mathematical expression is as follows:

[0032] in, is the amplitude of the signal, is the carrier angular frequency, is the time variable, is the phase constant; the spectrum of the FM signal contains an infinite number of spectral components. Theoretically, there is no upper limit to the bandwidth of the FM signal, but in practical applications, the effective bandwidth is as follows:

[0033] in, is the bandwidth of the FM signal, is the frequency modulation index, The frequency of the modulating signal, is the maximum frequency deviation.

[0034] when <<1 hour, ≈2 ;when >>1 hour, ≈ .

[0035] In digital signal transmission systems, the signal processing process at the transmitter is as follows: First, the data bits "0" and "1" in the digital signal are precisely mapped to "low" and "high" states using a specific encoding method (such as return-to-zero or non-return-to-zero coding). These high and low levels are then DC-offset, serving as the driving signals for the light source. When the data bit changes, the DC-offset signal drives the light source: when the data bit is "1," the drive signal causes the light source to transmit at high power; when the data bit is "0," the drive signal reduces the light source's transmit power, achieving dynamic matching of transmit power and data bit state.

[0036] The photodetector at the receiving end continuously senses the optical signal emitted by the light source. As the optical power at the transmitting end changes due to variations in data bits, the optical power received by the detector changes synchronously, converting the fluctuations in optical power into variations in the power of the electrical signal. Subsequent circuitry rectifies this electrical signal, removing the DC component introduced by the DC offset and ultimately restoring the high and low levels that exactly correspond to those at the transmitting end. This restored level signal, representing the digital data bits carrying the original information, completes the complete transmission loop of the digital signal from transmission to reception.

[0037] The carrier-carrying light can be controlled by adjusting the emission angle, emission direction, illumination intensity, and partial shielding to control the location and range of the illuminated area. The illuminated area serves as the effective data transmission point, and within this effective point area, it can simultaneously transmit data to any number of receiving terminals. In situations where confidentiality of broadcast content is required, radio frequency signals can easily leak into the external environment through transmission or diffraction and be intercepted and monitored. The optical signal used in this invention propagates in a straight line, and directly blocking the light propagation path can prevent the leakage of the transmitted signal.

[0038] At the same time, systems that work in a radio broadcasting mode have the following problems: (1) crosstalk occurs between different but similar frequency broadcast channels; (2) when faced with a complex radio frequency environment, it will be affected by electromagnetic interference; The system of the tour guide that uses radio frequency identification (RFID) combined with built-in audio files has the following problems: (1) due to overlapping RFID coverage, the wrong audio file may be triggered; (2) the radio coverage of RFID can only be controlled by limiting the transmission power, but the transmission power has a lower limit, which makes its minimum coverage range greater than one meter.

[0039] In this solution, illumination range is also known as coverage. For a single light source, simple methods like adjusting the emission angle and shading can set coverage at the centimeter level. Light propagates in straight lines, and crosstalk is eliminated when coverage areas of individual light sources do not overlap.

[0040] In scenic spots, tourists usually hold a slave terminal; the slave terminal is used to receive the optical signal from the point terminal, extract the optical signal carrying the data information from it, and decode it to obtain the data information; tourists can hear the guide's explanation when they are within the range of the point terminal set by the tour guide. When they leave the range, the guide's explanation stops and they can start a free tour. During the free tour, if they are within the range of the point terminal not specified by the tour guide, they can hear the automatic explanation content of the point. The information received by the slave terminal is closely related to the tourist's location. Figure 3 , the slave end specifically includes: Slave receiving unit: used to receive the optical signal at the point end; The slave optoelectronic device is used to convert the various optical signals received by the slave receiving unit into electrical energy and power the slave end. The slave optoelectronic device is placed within the illumination range of a light source, and the power output of the optoelectronic device is coupled to a signal processing device. After pre-processing such as rectification, filtering, and amplification, the transmission content of the point end is obtained. Simultaneously, the optoelectronic device generates photovoltaic energy when illuminated by the transmitting end or ambient light. Therefore, the output of the optoelectronic device is also connected to a power collection device for power supply and storage at the slave end.

[0041] The specific content of the transmission of the acquisition point end includes: when the received signal is a directly sent analog signal, it is directly sent to the speaker unit after power amplification to play back the sound; when receiving an AM or FM modulated analog signal, the received signal is first demodulated in AM or FM mode, and then sent to the speaker after power amplification; when receiving an AM or FM modulated control or data signal, the data is also demodulated first, that is, the high and low level signals corresponding to the data bits are obtained.

[0042] The optoelectronic devices include: perovskite cells, single crystal silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells, polycrystalline thin film solar cells (cadmium sulfide, cadmium telluride, gallium arsenide, copper indium gallium selenide, etc.), organic polymer solar cells, nanocrystalline solar cells, organic thin film solar cells, dye-sensitized solar cells, plastic solar cells, new perovskite derivative cells, compound semiconductor solar cells or stacked cells.

[0043] See Figure 7When the photovoltaic device receives light input, it generates an open-circuit voltage. This triggers the charge controller in the receiving end to begin full-power energy storage. The photovoltaic device voltage then drops to the MPPT voltage, and a cycle timer is started to trigger signal detection. After a period of time, signal detection is triggered, energy storage is paused, and the photovoltaic device returns to its open-circuit voltage to improve the signal-to-noise ratio. The controller then determines whether a signal is present. If not, full-power energy storage is resumed until the next signal detection is triggered. If a signal is present, the controller reduces the energy storage power, restoring the photovoltaic device voltage to a value above the MPPT voltage "setpoint," and then begins receiving data.

[0044] If the light signal fluctuation amplitude falls below a preset threshold, the controller determines that there is no valid signal, and the system exits data reception mode, returning to the energy storage and signal detection cycle. If the photoelectric device completely loses light, the system detects a lack of energy input and automatically switches to standby mode. At this point, the system maintains only basic monitoring circuitry, minimizing power consumption while awaiting the next light input to activate the workflow.

[0045] Taking perovskite cells as an example, when exposed to light, a potential difference is generated at the output terminal. Due to the series resistance (Rs) in the cell, this potential difference decreases when the equivalent resistance (Ro) of the energy storage circuit connected to the output terminal is less than Rs. When Ro becomes significantly less than Rs, reaching zero, the output potential difference disappears, and the perovskite cell virtually loses its power output capability. To address this issue, an MPPT controller must be connected between the perovskite cell and the energy storage circuit to match the output resistance and prevent the potential difference from disappearing.

[0046] The MPPT controller's equivalent resistance is adjustable. When Ro = Rs, the perovskite cell's output power, Pmax, reaches its maximum, with all generated power being output to the energy storage circuit. Because the light signal irradiating the perovskite cell is modulated and fluctuating, the strongest light signal produces the maximum power, P1, while the weakest light signal produces the minimum power, P2. Pmax fluctuates between P1 and P2 as the light signal changes. Continue increasing Ro until the perovskite cell's output power, Po, falls below P2. At this point, Pmax - Po = Ps. Since Pmax fluctuates but its lower limit is always greater than P2, the fluctuation of Po equals the fluctuation of Pmax, or PΔ. PΔ enters the signal receiving module for signal playback.

[0047] In this application, the output of the perovskite battery is connected in parallel to the MPPT controller and the signal receiving module. When full energy storage is required, the MPPT controller is adjusted to Ro = Rs. When energy storage and signal reception are required, the controller is adjusted to Ro > Rs.

[0048] The closer the "set value" is to the MPPT voltage, the lower the sensitivity, the greater the output impedance, and the more energy stored. The closer it is to the breakout voltage, the higher the sensitivity, the smaller the output impedance, and the less energy stored. Set the "set value" based on the characteristics of the optoelectronic device and the input impedance matching of the back-end circuit.

[0049] The slave processing unit decodes the optical signal received by the slave receiving unit and outputs the decoded data. This decoded data is typically audio. When a visitor is within range of a specific location, the slave plays back the data sent from that location. Any number of slaves can exist within the same location, playing the same audio data simultaneously. At certain locations, text and images are also included, displayed simultaneously on the slave screen while the audio is playing.

[0050] The slaves also include a slave storage unit, which stores the electrical energy converted from the optical signal and replenishes the energy used by the optoelectronic devices within the slaves. The slave storage unit is located on the back of the slaves, allowing them to receive energy from the light source while in use. When the slaves are stored at the end of their working hours, the light in the storage area continues to replenish their energy.

[0051] In scenic spots, tour guides or staff usually hold the host terminal. The tour guide is within the effective range of the point terminal. The tour guide's explanation content covers tourists within the point range. The tour guide can also manually set more points through the host terminal to deliver the explanation content data stream. The host terminal is used to obtain data information and transmit the data information via optical signals. Figure 4 , the host side includes the following components: Host acquisition unit: A microphone can be used to collect audio data information and control signals such as explanation voice; the microphone also includes an external pickup device or playback device, which transmits audio data to the host through an analog or digital interface.

[0052] Host processing unit: encodes the audio data and control signals picked up by the microphone; The host transmitter unit transmits encoded audio, voice, and control signals to the active area of the destination via optical signals. When the host is within a specific location and the tour guide requests specific content to be played via the host, the host transmitter unit sends the control signal to the destination. When the tour guide is providing independent commentary, the host transmitter unit transmits the audio data encoded by the host processing unit to the destination.

[0053] Control information is usually sent proactively to play the explanation content delivered at that location, enabling seamless switching between explanation data and system data, achieving a collaborative control effect. This enables efficient data transmission in team explanation scenarios and improves the accuracy of information delivery.

[0054] The point-to-point transmitter unit and the host transmitter unit include light-emitting devices, such as LEDs, spotlights, or laser emitters. By modulating the light emitted by the light-emitting device, data can be transmitted and transmitted in response to changes in light, allowing the emitted light source to blend in with the ambient lighting. Modulation methods include intensity modulation, wavelength modulation, frequency modulation, and duty cycle modulation. Data includes, but is not limited to, analog voltage or current variations, or digital signals encoded in any manner.

[0055] When ambient lighting cannot be adjusted, invisible light sources can be used as an alternative. The technical principle behind invisible light data transmission is the same as that of visible light: data information is encoded through changes in the intensity, frequency, or phase of the optical signal. The key to choosing invisible light transmission is to avoid power frequency interference in ambient lighting. This interference often originates from power frequency electric light sources, such as everyday lighting. The optical signals in these sources exhibit specific frequency fluctuations, which can severely impact the accuracy of visible light communication.

[0056] When the visible light interference in the environment is strong, the advantages of invisible light transmission are significant. Take 950nm infrared laser as an example: the transmitter modulates the data onto the infrared light in this band and transmits it; the receiver is equipped with a precision optical filtering device, and the optical signal receiving port covers a 950nm bandpass filter optical filter. This filter is based on the principle of optical interference or absorption, allowing only 950nm infrared light to pass through, effectively isolating other wavelengths of light and interfering visible light. In addition, taking perovskite cells as an example, considering the conventional light response wavelength range of perovskites, the wavelength range of invisible light sources is 850nm-1100nm, so the corresponding wavelength range of the transmitter needs to be adjusted according to the type of cell selected.

[0057] At this point, the optoelectronic device, acting as a light-receiving element, only receives data carried by light within this wavelength band, significantly reducing interference, improving the signal-to-noise ratio, and ensuring stable data transmission. However, due to the bandpass filter's selective filtering of light wavelengths, light otherwise available for photoelectric conversion cannot reach the optoelectronic device. This prevents the device from performing normal photoelectric conversion during the data reception phase, temporarily deactivating its charging function.

[0058] In summary, the present invention has the following advantages: 1. By modulating the illumination range of the light-emitting device, the data transmission area is physically isolated, eliminating the crosstalk problem of traditional wireless solutions, and achieving "what you see is what you get" of the explanation content and the visitor's location; 2. The optoelectronic device on the slave side has both signal reception and power generation functions, supporting continuous power supply and offline energy replenishment, completely solving the pain point of frequent device charging; 3. Use invisible light to transmit data to avoid radio wave interference and leakage, suitable for confidentiality scenarios; the light source can be integrated with ambient lighting to improve scene adaptability.

[0059] The above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A scenario-based intelligent broadcasting system, characterized in that: include: Point end: used to receive data information and send it via optical signals; Slave end: used to receive the optical signal from the point end, extract the optical signal carrying the data information therefrom, and obtain the data information after decoding it; and convert the various received optical signals into electrical energy to provide electrical energy for the slave end.

2. The scenario-based intelligent broadcasting system according to claim 1, characterized in that: The point end includes: Point receiving unit: used to receive data information from the host side or data information sent by the server, or data information from the host side and data information sent by the server; Point processing unit: used to decode the received data information and generate an optical signal carrying the data based on the decoded information; Point transmitting unit: used to send the optical signal generated by the point processing unit.

3. The scenario-based intelligent broadcasting system according to claim 1, characterized in that: The data information is selected from at least one of multimedia data and control information.

4. The scenario-based intelligent broadcasting system according to claim 1, characterized in that: Also includes: Host end: used to obtain the data information sent by the point end and send the data information via an optical signal.

5. The scenario-based intelligent broadcasting system according to claim 4, characterized in that: It also includes a server, and the point end, the host end and the slave end are connected to the server via an Ethernet bus.

6. The scenario-based intelligent broadcasting system according to claim 4, characterized in that: The host side includes: Host acquisition unit: used to collect data information; Host processing unit: used to encode the data information picked up by the host acquisition unit, and perform pre-processing, feature extraction, and encryption on the data information; Host transmitting unit: used to transmit data information to the effective area of the point end through optical signals.

7. The scenario-based intelligent broadcasting system according to claim 1, characterized in that: The slave end includes: Slave receiving unit: used for receiving the optical signal of the point end; Slave optoelectronic device: used to convert the optical signal received by the slave receiving unit into electrical energy and supply power to the slave end; Slave processing unit: used for decoding the optical signal received by the slave receiving unit and outputting the decoded data information.

8. The scenario-based intelligent broadcasting system according to claim 7, characterized in that: Also includes: Slave energy storage unit: used to store the electrical energy converted from the optical signal and to supply power to the slave end.

9. The scenario-based intelligent broadcasting system according to claim 7, characterized in that: The slave optoelectronic device is selected from: perovskite cells, silicon solar cells, polycrystalline thin film solar cells, organic polymer solar cells, nanocrystalline solar cells, organic thin film solar cells, dye-sensitized solar cells, plastic solar cells, new perovskite derivative cells, compound semiconductor solar cells or stacked cells.

10. The scenario-based intelligent broadcasting system according to claim 1, characterized in that: The optical signal is emitted by a light emitting device, and the light emitting device is selected from: an LED, a spotlight or a laser transmitter.

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