CN114785980A - Internet of things system suitable for wireless conference and wireless conference communication method - Google Patents
Internet of things system suitable for wireless conference and wireless conference communication method Download PDFInfo
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- CN114785980A CN114785980A CN202210483095.1A CN202210483095A CN114785980A CN 114785980 A CN114785980 A CN 114785980A CN 202210483095 A CN202210483095 A CN 202210483095A CN 114785980 A CN114785980 A CN 114785980A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
- H04L12/1822—Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission
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Abstract
The invention discloses an Internet of things system suitable for a wireless conference and a wireless conference communication method, wherein a main-end wireless U-section audio module is used for receiving audio signals, and a main-end wireless chip is used for establishing networking communication with a wireless microphone unit based on an 802.15.4 protocol; the background application program is used for controlling the conference process and setting related parameters; the branch wireless chip is used for receiving a control instruction sent by the main wireless chip, and the wireless U-segment audio sending module is used for collecting voice signals according to the control instruction and sending the collected voice signals to the main wireless U-segment audio module. The technical scheme of the invention realizes various current conference management modes in the conference system, effectively improves the usability and convenience of the wireless U-section conference system, greatly expands the application range of the traditional conference, and has the advantages of high network access speed, small delay, simple structure, stability, reliability and the like.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an Internet of things system suitable for a wireless conference and a wireless conference communication method based on the Internet of things system.
Background
At present, the traditional wireless U-section conference system has wide application and simple system structure, the sending and receiving ends are respectively provided with a wireless U-section audio signal receiving and sending chip, and the receiving and sending of the voice signals can be realized after the system is started. For a multi-channel wireless U-segment conference, the frequency point of each wireless microphone unit is determined by an infrared frequency-matching mode, so that the microphone can be directly used when the microphone talks in a conference. Due to the fact that the wireless audio receiving and transmitting module is solidified, the conference system is single in function, only audio can be received and transmitted, and the conference unit cannot be managed and controlled more finely.
Disclosure of Invention
Aiming at the problems, the invention provides an Internet of things system suitable for a wireless conference and a wireless conference communication method, through the organic combination of a main-end wireless U-section audio module and a wireless chip, under the condition of ensuring the normal audio data transmission of the main-end wireless U-section audio module, various conference management modes which pass in the conference system are realized, the usability and the convenience of the wireless U-section conference system are effectively improved, the application range of the traditional conference is greatly expanded, and a non-beacon mode network of an 802.15.4 protocol has the advantages of high network access speed, small delay, simple structure, stability, reliability and the like.
In order to achieve the above object, the present invention provides an internet of things system suitable for a wireless conference, including: a host terminal and a wireless microphone unit;
the host comprises a host and a background application program, the host comprises a main control processor, a main end wireless U-segment audio module and a main end wireless chip, the main end wireless U-segment audio module and the main end wireless chip are respectively connected with the main control processor, the main end wireless U-segment audio module is used for receiving audio signals, and the main end wireless chip is used for establishing networking communication with the wireless microphone unit based on an 802.15.4 protocol;
the background application program is connected with the main control processor and is used for controlling the conference process and setting related parameters;
the wireless microphone unit comprises a wireless U-section audio transmitting module, a branch wireless chip and a branch display module, the branch wireless chip is used for receiving a control instruction transmitted by the main wireless chip, the wireless U-section audio transmitting module is used for acquiring a voice signal according to the control instruction and transmitting the acquired voice signal to the main wireless U-section audio module, and the branch display module is used for displaying corresponding conference information according to the control instruction.
In the above technical solution, preferably, the master wireless chip is used as a coordinator to detect a wireless signal of a current environment, set a working frequency point, and send a broadcast signal at regular time to wait for a network access request of the wireless microphone unit;
and the main-end wireless chip establishes data communication with the wireless microphone unit corresponding to the current network access request if judging that the main-end wireless chip is a legal access device according to the received network access request.
In the above technical solution, preferably, the host side further includes a host display module and a host key module, the host display module is configured to display conference information of the wireless conference, and the host key module is configured to set and adjust the conference information through a touch instruction.
In the above technical solution, preferably, the wireless microphone unit further includes a branch end unit key, the branch end unit key is connected to the branch end wireless chip, and when triggered, sends a trigger signal to the main end wireless chip through the branch end wireless chip, and the main control processor implements a conference interaction function according to the trigger signal.
In the above technical solution, preferably, the master wireless chip and the slave wireless chip are 433MHz wireless chips, and the master wireless chip and the slave wireless chip construct a non-beacon mode network based on an 802.15.4 protocol.
In the above technical solution, preferably, each wireless microphone unit is preset with an identification number and a network address, and during data communication between the host and each wireless microphone unit, the interactive data packet includes the identification number and the network address of the corresponding wireless microphone unit.
The invention also provides a wireless conference communication method based on the internet of things system, which is applied to the internet of things system suitable for the wireless conference and disclosed by any one of the technical schemes and comprises the following steps:
a main-end wireless chip of a main-end detects a wireless signal of the current environment, sets a working frequency point, and sends a broadcast signal at regular time according to a preset network identification number and a network address;
a branch end wireless chip of a wireless microphone unit detects a broadcast signal and sends a network access request to a main end wireless chip according to a network identification number and a network address of the broadcast signal;
after the main-end wireless chip receives the effective network access request, the host analyzes the network access request data packet and sends a network access confirmation data packet to the branch-end wireless chip to complete the data network interaction with the corresponding wireless microphone unit;
the host broadcasts and sends out an interactive instruction to all the wireless microphone units, and a display module of each wireless microphone unit displays corresponding prompt information and sends a trigger signal of a key to the host;
when the speaking key of the wireless microphone unit is triggered, after a corresponding trigger signal is sent to the host, the host forwards the trigger signal to the preset chairman unit, and the speaking of the wireless microphone unit is allowed or forbidden according to the trigger key of the chairman unit.
In the above technical solution, preferably, the host broadcasts and sends out an interactive instruction to all the wireless microphone units, the display module of the wireless microphone unit displays corresponding prompt information, and sends a trigger signal of a key to the host, and the specific process includes:
the host broadcasts and sends out sign-in commands to all the wireless microphone units, a display module of each wireless microphone unit displays corresponding prompt sign-in information, and sends trigger signals of keys to the host;
the host broadcasts and sends out voting commands to all the wireless microphone units, the display module of the wireless microphone units displays corresponding voting information, and a trigger signal of a key is sent to the host.
In the above technical solution, preferably, the host sets different conference speaking modes through a background application program, where the conference speaking modes include a free mode, a first-in first-out mode, a voice control mode, and an application mode;
in the free mode, each wireless microphone unit speaks when triggered, and stops speaking when triggered again after speaking is finished;
in the first-in first-out mode, the host limits the number of the wireless microphone units which are simultaneously opened, and adds a new wireless microphone unit after the wireless microphone unit which is firstly opened is closed;
under the voice control mode, the wireless microphone unit which monitors speaking is immediately started;
and in the application mode, sending an application to a preset chairman unit, and opening a corresponding wireless microphone unit after permission is obtained.
In the above-described aspect, it is preferable that when the chairman unit triggers the priority button, the chairman priority utterance information is transmitted to the master, and the master turns off all the other turned-on wireless microphone units and allows only the chairman unit to utter.
Compared with the prior art, the invention has the following beneficial effects: through the organic combination of the main-end wireless U-segment audio module and the wireless chip, under the condition that the main-end wireless U-segment audio module is ensured to normally transmit audio data, various current conference management modes in the conference system are realized, the usability and the convenience of the wireless U-segment conference system are effectively improved, the application range of the traditional conference is greatly expanded, and the non-beacon mode network of the 802.15.4 protocol has the advantages of high network access speed, small delay, simple structure, stability and reliability.
Drawings
Fig. 1 is a schematic network structure diagram of an internet of things system suitable for a wireless conference according to an embodiment of the present invention;
fig. 2 is a schematic basic structure diagram of an internet of things system suitable for a wireless conference according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a wireless conference communication method based on an internet of things system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1 and fig. 2, an internet of things system suitable for a wireless conference provided in the present invention includes: a host terminal and a wireless microphone unit;
the host end comprises a host and a background application program, the host comprises a main control processor, a main end wireless U-section audio module and a main end wireless chip, the main end wireless U-section audio module and the main end wireless chip are respectively connected with the main control processor, the main end wireless U-section audio module is used for receiving audio signals, and the main end wireless chip is used for establishing networking communication with the wireless microphone unit based on an 802.15.4 protocol;
the background application program is connected with the main control processor and is used for controlling the conference process and setting related parameters;
the wireless microphone unit comprises a wireless U-section audio transmitting module, a branch wireless chip and a branch display module, the branch wireless chip is used for receiving a control instruction transmitted by the main wireless chip, the wireless U-section audio transmitting module is used for acquiring a voice signal according to the control instruction and transmitting the acquired voice signal to the main wireless U-section audio module, and the branch display module is used for displaying corresponding conference information according to the control instruction.
In this embodiment, the conference system usually needs a host or a background to manage the conference units, such as checking the units that have joined the conference currently, the units that are active (turning on the microphone mic), and the units that apply for speaking; in the conference process, actions such as sign-in, voting and the like can be initiated, each conference participating unit is required to receive information and respond, and a host computer is required to collect and count data; the units which do not belong to the current conference room are refused to join to avoid interference, and all conference units are required to form a network to realize the functions, and each unit is managed through the network, so that a system with richer functions can be realized.
Specifically, the invention realizes a wireless U-segment conference system capable of networking by utilizing an 802.15.4 wireless protocol. All units participating in the conference are added into a network so as to be managed uniformly and realize various functions. The host or the background can set the conference network id, and each unit sets the same id number, so that the whole conference system can be ensured to be in the same network. The host sends commands (such as sign-in, voting and the like) in a broadcasting mode, all the units can receive the commands, so that each unit can display a corresponding interface, and conference participants can perform key operation on the wireless units on respective seats to complete actions such as sign-in, voting and the like. In addition, due to the network, the host can control any unit to turn on or off the microphone; the unit can send information to the host to request for speaking or helping or report the state of the unit, and the like, so that the wireless U-segment conference system is more convenient and more complete in function compared with the traditional wireless U-segment conference system.
The system integrates a main-end wireless U-segment audio module and a sub 1G main-end wireless chip supporting 433MHz signals. The main end wireless U-section audio module is used for sending and receiving audio signals, and the frequency is over 600 MHz; the sub 1G master wireless chip works at 433MHz and is used for realizing 802.15.4 protocol networking, conference process management and unit control.
The 802.15.4 protocol is a technical standard for low-speed personal area networks that focuses on low-cost, low-speed communication between devices, with the emphasis on low-cost communication of nearby devices, with little underlying infrastructure. These characteristics make the 802.15.4 protocol widely used, and a personal area network meeting the requirements can be easily formed by using simple equipment. In a personal area network, devices are divided into two roles: a coordinator and an endpoint. The coordinator can be understood as a master controller of the whole network, and generates a unique network identifier for identifying the current network; the endpoints are the devices connected to the coordinator, which are identified by the coordinator and permitted to join the network by sending a request message with the network identifier.
The 802.15.4 protocol supports either a point-to-point network or a star network, although both architectures may be combined to form a combined network. As shown in fig. 1, in this embodiment, it is preferable to use a star network, a 433MHz master wireless chip of a host as a coordinator (center) of the entire network, and a wireless microphone MIC unit as a terminal node.
Because each wireless unit of the conference system only needs to interact with a host (coordinator), the star structure is a proper network structure, and the data flow direction is simple and easy to realize.
Here, the non-beacon mode in the 802.15.4 protocol is implemented, which has the following advantages:
(1) the beacon mode is synchronous transmission and requires any node to perform data interaction only when a synchronous beacon arrives. When the number of node units is large, the total data volume is too large, and the probability of one-time transmission failure is increased; the non-beacon mode is asynchronous transmission, a plurality of node units do not need to send data at the same time, and the data transmission success rate is higher under the condition that more node units exist;
(2) in order to achieve synchronous transmission, the beacon mode needs to transmit beacon data through broadcast timing, which has to be transmitted even without data interaction. The conferencing system does not require frequent data interaction so periodic transmission of beacons is not required, and non-beacon mode communication logic can transmit immediately without waiting when there is data. This makes the data transmission of the whole network more flexible.
(3) After the slave system is powered on to complete networking, the host needs to send beacons regularly, the unit needs to receive beacons regularly, and power consumption is increased by the two parties. The non-beacon mode used by the invention can save a lot of power consumption, and for the wireless microphone MIC unit powered by the battery, the low power consumption is important.
In the foregoing embodiment, preferably, the master wireless chip is used as a coordinator to detect a wireless signal of a current environment, set a working frequency point, and send a broadcast signal at regular time to wait for a network access request of the wireless microphone unit;
and the main-end wireless chip establishes data communication with the wireless microphone unit corresponding to the current network access request if judging that the main-end wireless chip is a legal access device according to the received network access request.
In the foregoing embodiment, preferably, the host further includes a host display module and a host key module, the host display module is configured to display conference information of the wireless conference, and the host key module is configured to set and adjust the conference information through a touch instruction.
The 433MHz main end wireless chip at the main end plays a role of a personal area network coordinator and is responsible for networking and network communication; the main end wireless U-section audio module is responsible for receiving audio signals; the host computer end is also integrated with an LCD module for displaying the information of the current conference, such as conference mode, the number of participants, volume, check-in voting result and the like, and the user can enter a setting page for parameter setting through a key arranged beside the LCD. The background is an application program running on a computer PC, and a conference administrator can control the conference process and set related parameters, and part of functions are the same as the parameter setting of the LCD interface.
The wireless microphone unit MIC is also integrated with a 433MHz branch wireless chip, a wireless U-segment audio transmitting module and a branch display module LCD. The LCD module is used for displaying basic information of the current conference and changing interfaces, such as networking, speaking, signing in, voting and the like, according to commands of the host, so that conference participants can know states of the conference and equipment conveniently; the wireless U-segment audio transmitting module is only responsible for transmitting audio, because the wireless microphone unit is only used for speaking; the 433MHz branch end wireless chip is used as the state of an end point device in the personal area network and is responsible for communicating with a 433MHz main end wireless chip (wireless coordinator) in the host.
The wireless coordinator stores the information of all the endpoint devices which join the network and numbers the endpoint devices; inquiring and storing the state of each wireless unit, such as whether the wireless unit is on line or not, whether the wireless unit is a chairman unit or not, whether a microphone is opened or not, whether the check-in is completed or whether voting is carried out or not, and the like; when the chairman unit initiates a voting vote or other command requiring all units to respond, the coordinator sends out a wireless command in a broadcast mode, and each unit needs to respond.
In the foregoing embodiment, preferably, the wireless microphone unit further includes a branch end unit key, the branch end unit key is connected to the branch end wireless chip, and sends the trigger signal to the main end wireless chip through the branch end wireless chip when being triggered, and the main control processor implements a conference interaction function according to the trigger signal.
In the foregoing embodiment, preferably, the master wireless chip and the slave wireless chip are 433MHz wireless chips, and the master wireless chip and the slave wireless chip construct a non-beacon mode network based on an 802.15.4 protocol.
In the foregoing embodiment, preferably, each wireless microphone unit is preset with an identification number and a network address, and during data communication between the host and each wireless microphone unit, the interactive data packet includes the identification number and the network address of the corresponding wireless microphone unit.
In this embodiment, the conferencing system is functionally divided into two parts:
(1) main unit
The host comprises wireless audio data receiving and 433MHz wireless data receiving and sending, and as the host, the 433MHz wireless receiving and sending module is a full-function device, namely the function described by almost all 802.15.4 protocols is realized, and the device can detect/establish a network, initiate networking, receive a networking request and manage each node unit device of the networking.
(2) Unit
The unit comprises wireless audio data sending and 433MHz wireless data receiving and sending, a 433MHz wireless receiving and sending module in the unit is a simplified functional device, networking is realized, the 433MHz wireless data receiving and sending function is realized, and compared with a full-function device, the unit has no network management function.
As shown in fig. 3, the present invention further provides a wireless conference communication method based on an internet of things system, which is applied to the internet of things system suitable for a wireless conference, and includes:
a main end wireless chip of the main end detects a wireless signal of the current environment, sets a working frequency point, and sends a broadcast signal at regular time according to a preset network identification number and a network address;
the branch-end wireless chip of the wireless microphone unit detects the broadcast signal and sends a network access request to the main-end wireless chip according to the network identification number and the network address of the broadcast signal;
when the main-end wireless chip receives an effective network access request, the host analyzes the network access request data packet and sends a network access confirmation data packet to the branch-end wireless chip to complete the data network interaction with the corresponding wireless microphone unit;
the host machine broadcasts and sends out an interactive instruction to all the wireless microphone units, a display module of each wireless microphone unit displays corresponding prompt information, and a trigger signal of a key is sent to the host machine;
when the speaking key of the wireless microphone unit is triggered, after a corresponding trigger signal is sent to the host, the host forwards the trigger signal to the preset chairman unit, and the speaking of the wireless microphone unit is allowed or forbidden according to the trigger key of the chairman unit.
In this embodiment, the process of networking the conference system is as follows:
(1) a 433MHz wireless module of a host computer is used as a coordinator to detect 433MHz frequency band wireless signals in the current environment, so that a clean or less-interference frequency band is selected as a working frequency point of the current network;
(2) the wireless coordinator sets a network identification number (ID) and a network address and then sends out broadcast signals at regular time, the broadcast data comprises the ID and the address of the network, the working frequency of the current network and a mark for permitting to join the network, and the wireless coordinator waits for the network-joining request of the unit equipment.
(3) The 433MHz wireless module of the wireless unit device is used as a reduced function device, detects the broadcast signal regularly after being electrified, and sends a network access request if a legal network signal (namely a valid network ID, an address and information for permitting to join) is found, wherein the request data comprises the address and other attributes of the module.
(4) The wireless coordinator receives the effective network access request data packet and then analyzes the effective network access request data packet, if the effective network access request data packet is judged to be a legal access device and the number of the current accessed devices does not exceed the maximum value (255 wireless microphone MIC units), a network access confirmation data packet is sent out, and information such as device addresses is stored in a buffer area of the wireless coordinator, so that subsequent communication is facilitated.
(5) And the unit equipment considers that the unit equipment is added into the network after receiving the network access confirmation data packet, and can perform data interaction.
(6) All communication adopts CSMA/CA mechanism, when the sender does not receive the response signal from the other side, the current channel is considered to be congested, and then the sender waits for a period of time to resend, and the retransmission times can be set arbitrarily.
Through the networking process of the non-beacon mode personal area network, after the personal area network is accessed, any unit and the host can freely communicate, and the communication mode adopts the non-beacon mode asynchronous communication.
According to the communication mode, the communication mode can be divided into unicast communication and broadcast communication.
Broadcasting: only the coordinator can send broadcast to each unit for the host to initiate the operations of all units such as conference sign-in, voting/voting, etc., or the system modifies some parameters and needs to send down to each wireless unit. The broadcasting process is simple: the wireless coordinator sets a broadcast address, content to be broadcast is added into a data frame, and then data is sent out through a 433MHz wireless chip, so that the broadcast can be completed.
Unicast: typically for the wireless unit to send a request to the host, or the host to send a command to a certain wireless unit. Taking the microphone open as an example: when the participator wants to speak, pressing a microphone MIC button on the wireless unit, and sending a request data frame to the host by the 433MHz wireless chip; the host judges that the host can permit the host to speak, and sends back a data frame for confirming the speaking and locally records the current state of the wireless microphone unit; and after the wireless unit receives the data frame confirming the speaking, the wireless U-section audio module of the main end is opened, the icon and the indicator light are changed to indicate that the speaking can be realized, and the unicast communication is finished at one time. Unicast communication is generally unidirectional, for example, a wireless unit sends a sign-in result, when a unit sign-in key is pressed, a wireless data frame is sent to a host to tell the host that the host has signed in, and at the moment, after receiving information, a host application layer updates a local sign-in information table and then completes the communication.
The wireless U-segment conference system combines the wireless U-segment audio transmission module and the 433MHz wireless module, has the functions of both speaking and network management, can realize the conference management function which cannot be realized by the traditional wireless U-segment conference system, and greatly improves the function of the wireless U-segment conference system.
In the foregoing embodiment, preferably, the host broadcasts and sends out an interactive instruction to all the wireless microphone units, the display module of the wireless microphone unit displays corresponding prompt information, and sends a trigger signal of a key to the host, and the specific process includes:
the host sends a sign-in command to all the wireless microphone units in a broadcast mode, a display module of each wireless microphone unit displays corresponding prompt sign-in information, and sends back a signed-in data frame through unicast after the wireless microphone unit presses a sign-in key, and a trigger signal of the key is sent to the host; the host stores the sign-in information of the unit after receiving the sign-in information; and after the check-in information of each unit is obtained in sequence, the check-in condition can be counted. The host ends the check-in by setting a check-in countdown, or by manually ending the check-in.
Similar to the check-in process, the host broadcasts and sends out a voting command to all the wireless microphone units, and the display module of the wireless microphone units displays corresponding voting information and sends the trigger signals of the keys to the host.
In the above embodiment, preferably, the host sets different conference speaking modes through the background application program, where the conference speaking modes include a free mode, a first-in first-out mode, a voice-controlled mode, and an application mode;
in the free mode, each wireless microphone unit speaks when triggered, and stops speaking when triggered again after the speaking is finished;
in the first-in first-out mode, the host machine limits the number of the wireless microphone units which are simultaneously opened, and adds a new wireless microphone unit after the wireless microphone unit which is firstly opened is closed;
under the sound control mode, the wireless microphone unit which monitors that the user is speaking is immediately started;
in the application mode, the wireless microphone unit firstly sends a unicast request to the host to speak, the host forwards the request to the chairman unit through unicast, the chairman unit judges whether the speak can be permitted or not and sends the permission or prohibition information back to the host, the host sends a data frame to the application unit, and the unit determines whether to open the microphone or not after receiving the data frame to finish the speaking application process. In the whole process, all 433MHz wireless communication is unicast communication.
Specifically, each wireless microphone unit needs to have a number for convenience of management. The host sends a unit number id distribution command by sending a broadcast data frame; after receiving the ID information, each wireless microphone unit clears the original ID information and sends out a numbering request through unicast; the host allocates an idle id number and sends a unicast data frame to the wireless microphone unit; and the wireless microphone unit updates the id number of the wireless microphone unit after obtaining the data. In general, the master id assignment policy is a sequential number, and the wireless microphone unit that first issues a request assigns an id number first, and increases in order from 1. After the system is started, each wireless microphone unit is added into the network of the host, and the host can determine the number of the wireless microphone units currently, so that the numbering process can be ended when the number reaches the total number of the wireless microphone units.
In the above embodiment, preferably, when the chairman unit activates the priority button, the chairman priority utterance information is transmitted to the master unit, and the master unit transmits a command to turn off all the other turned-on wireless microphone units to allow only the chairman unit to utter. All 433MHz wireless communication is unicast communication in the whole process.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An internet of things system suitable for wireless conferences, comprising: a host terminal and a wireless microphone unit;
the host comprises a host and a background application program, the host comprises a main control processor, a main end wireless U-segment audio module and a main end wireless chip, the main end wireless U-segment audio module and the main end wireless chip are respectively connected with the main control processor, the main end wireless U-segment audio module is used for receiving audio signals, and the main end wireless chip is used for establishing networking communication with the wireless microphone unit based on an 802.15.4 protocol;
the background application program is connected with the main control processor and is used for controlling the conference process and setting related parameters;
the wireless microphone unit comprises a wireless U-section audio transmitting module, a branch wireless chip and a branch display module, the branch wireless chip is used for receiving a control instruction transmitted by the main-end wireless chip, the wireless U-section audio transmitting module is used for acquiring a voice signal according to the control instruction and transmitting the acquired voice signal to the main-end wireless U-section audio module, and the branch display module is used for displaying corresponding conference information according to the control instruction.
2. The system of claim 1, wherein the wireless chip of the host detects a wireless signal of a current environment as a coordinator, sets a working frequency point, and periodically transmits a broadcast signal to wait for a request of the wireless microphone unit to access the network;
and the main-end wireless chip establishes data communication with the wireless microphone unit corresponding to the current network access request if judging that the main-end wireless chip is a legal access device according to the received network access request.
3. The system of claim 1, wherein the host further comprises a host display module and a host button module, the host display module is configured to display conference information of the wireless conference, and the host button module is configured to set and adjust the conference information through a touch instruction.
4. The system of claim 1, wherein the wireless microphone unit further comprises a branch unit key, the branch unit key is connected to the branch wireless chip and transmits a trigger signal to the main wireless chip through the branch wireless chip when being triggered, and the main processor implements a conference interaction function according to the trigger signal.
5. The system of claim 1, wherein the master wireless chip and the slave wireless chips are 433MHz wireless chips, and the master wireless chip and the slave wireless chips construct a non-beacon mode network based on an 802.15.4 protocol.
6. The system of claim 1, wherein each of the wireless microphone units has a predetermined identification number and a predetermined network address, and the interactive data packet includes the identification number and the network address of the corresponding wireless microphone unit during data communication between the host and each of the wireless microphone units.
7. A wireless conference communication method based on an internet of things system, wherein the internet of things system suitable for wireless conference as claimed in any one of claims 1 to 6 is applied, and comprises:
a main end wireless chip of the main end detects a wireless signal of the current environment, sets a working frequency point, and sends a broadcast signal at regular time according to a preset network identification number and a network address;
a branch end wireless chip of a wireless microphone unit detects a broadcast signal and sends a network access request to a main end wireless chip according to a network identification number and a network address of the broadcast signal;
after the main-end wireless chip receives the effective network access request, the host analyzes the network access request data packet and sends a network access confirmation data packet to the branch-end wireless chip to complete the data network interaction with the corresponding wireless microphone unit;
the host broadcasts and sends out an interactive instruction to all the wireless microphone units, the display modules of the wireless microphone units display corresponding prompt information, and trigger signals of keys are sent to the host;
when the speaking key of the wireless microphone unit is triggered, after a corresponding trigger signal is sent to the host, the host forwards the trigger signal to the preset chairman unit, and the speaking of the wireless microphone unit is allowed or forbidden according to the trigger key of the chairman unit.
8. The wireless conference communication method based on the internet of things system as claimed in claim 7, wherein the host broadcasts and sends out an interactive command to all the wireless microphone units, the display module of the wireless microphone units displays corresponding prompt information, and sends a key-press trigger signal to the host, and the specific process comprises:
the host broadcasts and sends out sign-in commands to all the wireless microphone units, a display module of each wireless microphone unit displays corresponding prompt sign-in information, and sends trigger signals of keys to the host;
the host broadcasts and sends out voting commands to all the wireless microphone units, the display module of the wireless microphone units displays corresponding voting information, and the triggering signals of the keys are sent to the host.
9. The wireless conference communication method based on the internet of things system as claimed in claim 7, wherein the host sets different conference speaking modes through a background application program, wherein the conference speaking modes comprise a free mode, a first-in first-out mode, a voice control mode and an application mode;
in the free mode, each wireless microphone unit speaks when being triggered, and stops speaking when being triggered again after ending speaking;
in the first-in first-out mode, the host machine limits the number of the wireless microphone units which are simultaneously opened, and adds a new wireless microphone unit after the wireless microphone unit which is firstly opened is closed;
under the voice control mode, the wireless microphone unit which monitors speaking is immediately started;
and in the application mode, sending an application to a preset chairman unit, and opening a corresponding wireless microphone unit after permission is obtained.
10. The system for wireless conference communication according to claim 9, wherein when the chairman unit activates the priority button, chairman priority utterance information is transmitted to the host, and the host turns off all other wireless microphone units that are turned on, and allows only the chairman unit to speak.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117202016A (en) * | 2023-08-21 | 2023-12-08 | 广州市唯图新电子科技有限公司 | Conference system host based on WIFI wireless and wired network technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117202016A (en) * | 2023-08-21 | 2023-12-08 | 广州市唯图新电子科技有限公司 | Conference system host based on WIFI wireless and wired network technology |
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