An interactive acousto-optic system and AB card device

Abstract

The utility model relates to a kind of interactive acousto-optic system and AB card device, comprising: A card, including 2.4GHz receiving module and acousto-optic output module;B card, including NFC tag, the UID of A card and the URL of B card NFC tag one-to-one correspondence, and all are unique value;Mobile terminal is configured to read the URL of NFC tag and send the POST request containing the ID of URL;Informationization server receives POST request, according to the ID query corresponding UID, sends activation instruction encapsulated with UID;Transmitting base station receives the activation instruction and broadcasts 2.4GHz activation signal, UID corresponding A card activates acousto-optic output module after receiving activation signal by 2.4GHz receiving module.The application is to provide a kind of acousto-optic system and AB card device that can be remotely interacted by NFC tag, improve user interactive experience and system management efficiency.

Description

Technical Field

[0001] This utility model relates to the field of audio-visual interactive systems, and in particular to an interactive audio-visual system and an AB card device. Background Technology

[0002] With the development of IoT technology, RFID (Radio Frequency Identification) and NFC (Near Field Communication) technologies are increasingly widely used in the field of interactive device control. In existing technologies, common audio-visual interactive systems are mainly implemented through the following methods:

[0003] Single-point triggered devices: such as NFC tag-based proximity triggering devices, require users to bring the device close to scan in order to activate the sound and light effects, limiting the interaction range and making remote control impossible.

[0004] Traditional group control systems, such as lighting control systems based on WiFi or Bluetooth Mesh, can support multi-device linkage, but they have two major drawbacks: high response latency: broadcast commands need to be forwarded level by level, and packet loss is easy when a large number of devices (>100 nodes) are connected concurrently; rigid binding mechanism: device IDs need to be manually entered into the system, and it is impossible to realize the automatic association between physical actions and logical binding.

[0005] Therefore, there is an urgent need for an interactive system that supports large-scale concurrent device control, has an automatic binding mechanism, and can achieve highly customized audio-visual effects to improve user interaction experience and system management efficiency. Utility Model Content

[0006] The purpose of this utility model is to solve the above-mentioned technical problems. This application aims to provide an audio-visual system and AB card device that can be remotely interacted with via NFC tags.

[0007] An interactive audio-visual system, comprising:

[0008] A card, including a 2.4GHz receiver module and an audio-visual output module;

[0009] Card B includes an NFC tag, and is configured such that the UID of Card A and the URL of the NFC tag of Card B are one-to-one correspondences, and both are unique values;

[0010] The mobile terminal is configured to read the URL of the NFC tag and send a POST request containing the ID of the URL;

[0011] The information server is configured to receive POST requests, query the corresponding UID based on the ID, and send an activation command encapsulated with the UID.

[0012] The transmitting base station is configured to receive the activation command and broadcast a 2.4GHz activation signal. The A card corresponding to the UID activates the audio-visual output module after receiving the activation signal through the 2.4GHz receiving module.

[0013] According to the interactive audio-visual system of this application, when using the interactive audio-visual system, placing card A within the range of the 2.4GHz activation signal broadcast by the transmitting base station, and interacting with the user's smart terminal by holding card B, the audio-visual output module of card A can be remotely activated. This breaks through the range limitation of NFC near-field communication, allowing users to remotely activate the audio-visual output module of card A without having to hold it close to card A. During the production process, card A and card B are bound using an existing dual-frequency binding device, ensuring that the UID of card A and the URL of the NFC tag of card B correspond one-to-one and are both unique values. Thus, after card B interacts, the information server can activate card A according to the one-to-one binding relationship.

[0014] Furthermore, the information server includes a cloud server and an IoT PaaS platform. The cloud server is configured to receive POST requests, query the corresponding UID based on the ID, generate MQTT instructions, and publish them to the IoT PaaS platform. The IoT PaaS platform is configured to subscribe to MQTT messages and encapsulate and send 2.4GHz activation instructions.

[0015] Furthermore, the mobile terminal enables the NFC monitoring function. When an NFC tag is detected, the NFC adapter is initialized and an attempt is made to read the URL information within the NFC tag. If the URL reading fails, a retry mechanism is triggered. If all three retries fail, a tag damage warning is output. If the URL reading is successful, the URL is parsed and the associated webpage is opened. The ID of the NFC tag is then sent to the cloud server interface via a POST request.

[0016] An AB card device includes an A card and a B card. The A card includes a 2.4GHz receiving module and an audio-visual output module. The B card includes an NFC tag, which is used to interact with a smart terminal and generate a 2.4GHz activation signal. The 2.4GHz receiving module is used to receive the 2.4GHz activation signal, and the audio-visual output module is used to emit an audio-visual signal.

[0017] Furthermore, the A card also includes a housing and a circuit board installed in the housing, the audio-visual output module includes an LED and a speaker, the 2.4GHz receiving module is disposed on the circuit board, and the LED and speaker are electrically connected to the circuit board.

[0018] Furthermore, the B card also includes a card, which includes a main body and a connecting part. The NFC tag is integrated into the main body, and the connecting part is inserted into the housing for fixation. The main body and the connecting part can be disconnected. Attached Figure Description

[0019] Figure 1This is a flowchart illustrating the interaction between the intelligent terminal of the interactive audio-visual system of this utility model and the B card.

[0020] Figure 2 This is a flowchart of the cloud server for the interactive audio-visual system of this utility model.

[0021] Figure 3 This is a flowchart of the IoT PaaS platform for the interactive audio-visual system of this utility model.

[0022] Figure 4 This is a perspective view of the base station for the interactive audio-visual system of this utility model.

[0023] Figure 5 This is a front view of the AB card device of this utility model.

[0024] Figure 6 This is an exploded view of the AB card device of this utility model.

[0025] Figure 7 This is the circuit diagram of the A card of this utility model.

[0026] Figure 8 This is a circuit diagram of the transmitting base station of this utility model. Detailed Implementation

[0027] The present invention relates to an interactive audio-visual system and an AB card device, described in conjunction with the accompanying drawings.

[0028] like Figures 1 to 8 An interactive audio-visual system is shown, comprising:

[0029] A card, including a 2.4GHz receiver module and an audio-visual output module;

[0030] Card B includes an NFC tag. The UID of Card A and the URL of Card B's NFC tag are uniquely matched. The URL format is a POST URL, such as http: / / xxxx.com / ?ID=1234. Card A and Card B are bound together during the production process using an existing dual-band device binder. During binding, the 2.4GHz module reads Card A's UID (e.g., 0x3DA5B7), generates a unique URL (e.g., http: / / xxxx.com / ?ID=1234), and writes it to Card B. Then, the mapping relationship (UID: 0x3DA5B7, URL: http: / / xxxx.com / ?ID=1234) is uploaded to the database of the information server via the network. Both UID and URL are primary keys, i.e., unique values, thus completing the binding of Card A and Card B.

[0031] The mobile terminal is configured to read the URL of the NFC tag and send a POST request containing the ID of the URL;

[0032] The information server receives POST requests, queries the corresponding UID based on the ID, and sends an activation command encapsulated with the UID.

[0033] The transmitting base station receives the activation command and broadcasts a 2.4GHz activation signal. The A card corresponding to the UID receives the activation signal through the 2.4GHz receiving module and then activates the audio-visual output module. The transmitting base station is based on the Bluetooth proprietary protocol and uses a broadcast + ID filtering method, which can activate multiple A cards within the coverage area (generally within a 30-meter range) at the same time. That is, when a user scans the NFC of a B card using a smart terminal (generally a mobile phone), the transmitting base station can send an activation signal to the corresponding A card, thereby causing the corresponding A card to emit an audio-visual signal. When multiple different B cards are scanned, the transmitting base station can also activate multiple different A cards and emit audio-visual signals.

[0034] like Figure 7 and Figure 8 As shown, in this implementation, the transmitting base station and A-cards use a WY8S8003 MCU chip, an 8-channel 12-bit ADC, and an XN297L RF chip, which can handle up to 2^10 chips. When the RF chip broadcasts the 2.4GHz activation signal, it uses a single queue to send out the activation signal, which can complete the activation of about 1,000 A-cards within 120 seconds, which is sufficient to meet the application scenario of activating multiple A-cards within the coverage area of ​​the transmitting base station.

[0035] The information server includes a cloud server and an IoT PaaS platform. The cloud server receives POST requests, queries the corresponding UID based on the ID, generates MQTT commands, and publishes them to the IoT PaaS platform. The IoT PaaS platform subscribes to MQTT messages and encapsulates and sends 2.4GHz activation commands. The cloud server also contains the database, which stores the UID of card A and the ID data of the URL of card B's NFC tag.

[0036] When the mobile terminal enables the NFC listening function and detects an NFC tag, it initializes the NFC adapter and attempts to read the URL information within the NFC tag. If the URL reading fails, a retry mechanism is triggered. If all three retries fail, a tag damage warning is output. If the URL reading is successful, the URL is parsed and the associated webpage is opened. The ID of the NFC tag is then sent to the cloud server interface via a POST request.

[0037] The cloud service receives the ID and verifies its legality by querying the database to see if the ID has a corresponding UID. If the ID is invalid, an HTTP 400 error is returned. If the ID is valid, an MQTT message containing the UID corresponding to the ID is generated and published to the IoT PaaS platform.

[0038] The IoT PaaS platform receives the message via MQTT subscription service, parses the transmitting base station ID in the message, and registers the transmitting base station ID in the database of the information server when deploying the interactive audio-visual system. For example, MID-001. The registration content is the ID binding location information. The target base station can be found more quickly based on the transmitting base station ID. Therefore, the transmitting base station ID is also sent from the cloud server to the IoT PaaS platform along with the MQTT message to determine the online status of the target transmitting base station. If the target transmitting base station is offline, an alarm notification is triggered; if the target transmitting base station is online, a 2.4GHz activation command is encapsulated and sent to the target transmitting base station via UDP protocol.

[0039] The target transmitting base station receives a UDP command, extracts the UID from the command, and verifies it with the UID stored locally. If the UID does not match, the command is discarded. If the UID matches, an activation signal is sent to the corresponding 2.4GHz receiving module via the 2.4GHz frequency band to activate the audio-visual output module.

[0040] In practical applications, users scan card B with their mobile phones. The corresponding webpage opens on the phone and automatically sends a POS signal to the information server. The information server retrieves the corresponding card A's UID and sends it back to the transmitting base station. The transmitting base station activates card A with the corresponding UID, causing it to emit an audio-visual signal. This application overcomes the range limitations of NFC near-field communication through the above solution, allowing users to remotely activate card A's audio-visual signal without holding it close to their phone. For example, in a space equipped with a transmitting base station, such as a religious site, auction house, or performance venue, card A can be displayed or hung within the coverage area of ​​the base station's broadcast activation signal. Users can hold card B and scan it with their mobile phones. The user's position is not restricted, and card A is remotely activated via the phone's NFC function, overcoming the range limitations of NFC near-field communication. Users can remotely activate card A's audio-visual signal without holding it close to their phone. Furthermore, within this space, multiple different users activating different cards and emitting audio-visual signals simultaneously can create different audio-visual atmospheres.

[0041] like Figure 5 and Figure 6As shown, an AB card device includes an A card 1 and a B card 2. The A card 1 includes a 2.4GHz receiving module and an audio-visual output module. The B card 2 includes an NFC tag 22, which is used to interact with a smart terminal and generate a 2.4GHz activation signal. The 2.4GHz receiving module is used to receive the 2.4GHz activation signal, and the audio-visual output module is used to emit an audio-visual signal.

[0042] The A card 1 also includes a housing 11 and a circuit board 12 installed in the housing 11. The audio-visual output module includes an LED 14 and a speaker 13. The 2.4GHz receiving module is disposed on the circuit board 12. The LED 14 and the speaker 13 are electrically connected to the circuit board 12. The LED 14 and the speaker 13 face the two sides of the housing 11 respectively. A light-transmitting window 111 is provided on the housing 11 where the LED 14 is disposed. The window 111 is a glass panel or a transparent plastic panel.

[0043] The B card 2 also includes a card 21, which includes a main body 211 and a connecting part 212. The NFC tag 22 is integrated into the main body 211, and the connecting part 212 is inserted into the housing 11 for fixation. The main body 211 and the connecting part 212 can be disconnected. Connecting the A card 1 and the B card 2 together can be conveniently bound using existing dual-frequency device binders before leaving the factory. After leaving the factory, the main body 211 and the connecting part 212 can be disconnected manually or with tools such as scissors, so that the A card 1 and the B card 2 can be used separately.

[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An interactive audio-visual system, characterized in that, include: A card, including a 2.4GHz receiver module and an audio-visual output module; Card B includes an NFC tag, and is configured such that the UID of Card A and the URL of the NFC tag of Card B are one-to-one correspondences, and both are unique values; The mobile terminal is configured to read the URL of the NFC tag and send a POST request containing the ID of the URL; The information server is configured to receive POST requests, query the corresponding UID based on the ID, and send an activation command encapsulated with the UID. The transmitting base station is configured to receive the activation command and broadcast a 2.4GHz activation signal. The A card corresponding to the UID activates the audio-visual output module after receiving the activation signal through the 2.4GHz receiving module.

2. The interactive audio-visual system according to claim 1, characterized in that, The information server includes a cloud server and an IoT PaaS platform. The cloud server is configured to receive POST requests, query the corresponding UID based on the ID, generate MQTT instructions, and publish them to the IoT PaaS platform. The IoT PaaS platform is configured to subscribe to MQTT messages and encapsulate and send 2.4GHz activation instructions.

3. An AB card device, characterized in that, The device includes an A card and a B card. The A card includes a 2.4GHz receiving module and an audio-visual output module. The B card includes an NFC tag, which is used to interact with a smart terminal and generate a 2.4GHz activation signal. The 2.4GHz receiving module is used to receive the 2.4GHz activation signal, and the audio-visual output module is activated to emit an audio-visual signal.

4. The AB card device according to claim 3, characterized in that, The A card also includes a housing and a circuit board installed in the housing. The audio-visual output module includes an LED and a speaker. The 2.4GHz receiver module is mounted on the circuit board. The LED and speaker are electrically connected to the circuit board.

5. The AB card device according to claim 4, characterized in that, The B card also includes a card, which includes a main body and a connecting part. The NFC tag is integrated into the main body, and the connecting part is inserted into the housing for fixation. The main body and the connecting part can be disconnected.

Images