CN111163483B - WiFi communication system and use method - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
The application discloses a WiFi communication system and a using method thereof, wherein the WiFi communication system comprises the following steps: an initialization module and a wireless module; the wireless module machine is integrated with a communication sub-module and a control sub-module; the initialization module performs initialization setting on the related data to generate an initialization value; the communication sub-module sends the AT instruction received from the terminal equipment and the related data of the server to the control sub-module, and sends the calling instruction to the server, and the processed related data is sent to the terminal equipment; and the control sub-module initializes the communication parameters of the WiFi function and the communication sub-module according to the initialization value, generates the AT instruction into a calling instruction, processes the related data of the server, and sends the calling instruction and the processed related data to the communication sub-module. The system improves the WiFi transmission rate through the interaction between the control sub-module and the communication sub-module, and increases the transmission range.
Description
Technical Field
The application relates to the technical field of wireless technology, in particular to a WiFi communication system and a using method thereof.
Background
Wi-Fi is a wireless local area network technology based on the IEEE 802.11 standard. Meanwhile, wi-Fi is also used as a brand certificate of products of Wi-Fi alliance manufacturers, which is a trademark.
The mainstream Wi-Fi standards are 802.11b (1999), 802.11g (2003) and 802.11n (2009), 802.11ac (2013), 802.11ax (2017). They are downward compatible, and old protocol devices may be connected to new protocol APs, and new protocol devices may be connected to old protocol APs, but at a reduced rate. 11g,11b are both earlier standards, 11b being up to only 11Mbps,11g up to 54Mbps. The maximum speed of 802.11n can reach 600Mbps, the maximum speed of 802.11ac can reach 6.9Gbps, the maximum speed of 802.11ax is about 10Gbps, the single user speed is not improved much, and the method has the advantage of improving the transmission efficiency in multi-user and high concurrency occasions. The above rate is a theoretical physical layer transmission rate, and must meet that the maximum number of spatial streams (multiple antenna input and output) is reached for both transmission and reception at the maximum transmission channel bandwidth, which is generally not the case. The mobile phones are mostly single antennas, and the mobile phones are rarely double antennas. Taking 802.11n as an example, the bandwidth of 20M and the single antenna can reach 72Mbps at maximum, the single antenna of 40M can reach 150M, the common USB single antenna wireless network card can reach 150M at maximum, which must require the wireless router to be configured with 40M bandwidth, the default configuration of the wireless router is 20M, because the frequency band of 2.4G is too crowded, only 20M bandwidth is generally configured, and thus the single antenna network card can reach 72Mbps at maximum. The above rates are all physical layer rates, and many messages are added to ensure the correct transmission of information by the physical layer, and the transmission has collision waiting time, so that the speed of transmitting data by using a wireless network is much lower than the speed of displaying by a network card.
The wireless local area network (Wireless Local Area Networks, WLAN) is a local area network formed by using Radio Frequency (RF) instead of twisted copper (coaxal).
Currently, wireless technologies in use include IEEE 802.11 standard series, homeRF, hyperLAN2 and bluetooth technologies, among which the IEEE 802.11 family is most widely used, and in particular, IEEE 802.11b standard is still being developed and perfected. HyperLAN2 was set up by the Broadband Radio Access Network (BRAN) group of the European Telecommunications Standardization Institute (ETSI), and it is widely supported in the industry as a standard in europe, with rates up to 54 Mbp. HomeRF has been slow to develop due to the dispute, and is only used in homes and small offices. Bluetooth technology is well known, but its transmission distance, access users are limited, and is only suitable for short-range transmission.
Therefore, how to improve the transmission rate of WiFi, shorten the transmission distance, and expand the application range is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above problems, the present application aims to solve the problems of low transmission rate and small application range of the existing wireless network, and achieve the purposes of improving the transmission rate of WiFi, shortening the transmission distance, and expanding the application range.
The embodiment of the application provides a WiFi communication system, which comprises: an initialization module and a wireless module; wherein, the wireless module is integrated with a communication sub-module and a control sub-module;
the initialization module is connected with the wireless module and is used for performing initialization setting on module parameters, generating initialization values and sending data of the initialization setting to the control submodule;
the communication sub-module is connected with the control sub-module, the server and the terminal equipment and is used for sending the related data of the AT command and the server received from the terminal equipment to the control sub-module, sending the calling command to the server and sending the processed related data to the terminal equipment;
the control submodule is connected with the initialization module and the communication submodule and is used for initializing communication parameters of the WiFi function and the communication submodule according to the initialization value, generating a calling instruction by the AT instruction, processing related data of the server and sending the calling instruction and the processed related data to the communication submodule.
In one embodiment, the initialization module includes: a communication parameter initializing unit and a function initializing unit;
the communication parameter initializing unit is connected with the control submodule and is used for initializing and setting the emptying receiving buffer area and closing the transparent transmission mode;
the function initialization unit is connected with the control sub-module and is used for initializing and setting the working mode, the AP mode parameters and the closing instruction back display function.
In one embodiment, the control submodule includes:
the wireless module adopts an ESP8266 chip.
In one embodiment, the AT instruction includes:
test commands, query commands, set commands, and execute commands.
In one embodiment, the prediction module includes: the control submodule includes: an initializing unit and a processing unit;
the initialization unit is connected with the initialization module and the communication sub-module and is used for initializing the working mode, the AP mode parameter and the closing instruction back display function of the control sub-module as well as the emptying receiving buffer zone and the opening/closing transparent transmission mode of the communication sub-module according to the initialization value;
the processing unit is connected with the communication sub-module and is used for generating a calling instruction by the AT instruction, processing the related data of the server and sending the calling instruction and the processed related data to the communication sub-module;
in one embodiment, the control submodule further includes: a connection unit;
the connecting unit is connected with the communication sub-module and is used for splicing the connecting instructions sent by the terminal equipment, generating spliced connecting instructions and sending the spliced connecting instructions to the communication sub-module.
In one embodiment, further comprising: a power module;
the power module is connected with the initialization module and the wireless module and is used for providing power supply voltage for the initialization module and the wireless module.
Based on the above object, in a second aspect of the present application, there is also provided a method for using a WiFi communication system, including:
the initialization module performs initialization setting on module parameters, generates initialization values and sends data of the initialization setting to the control sub-module;
according to the initialization value, the control submodule initializes the communication parameters of the WiFi function and the communication submodule;
the user selects an AT instruction through the terminal equipment and sends the AT instruction to the communication sub-module;
the communication submodule sends the AT instruction received from the terminal equipment to the control submodule;
the control submodule converts the AT instruction into a calling instruction and sends the calling instruction to the server through the communication submodule;
the server calls related data according to the call instruction and sends the related data to the control submodule through the communication submodule;
the control submodule processes the related data and sends the processed related data to the terminal equipment for display through the communication submodule.
In one embodiment, the initializing module performs initializing setting on the related data to generate an initialization value, including:
the communication parameter initialization unit performs initialization setting on the emptying of the receiving buffer area and the opening/closing of the transmission mode;
the function initialization unit performs initialization setting on the working mode, the AP mode parameters and the closing instruction display function.
In one embodiment, further comprising:
the user sends a connection instruction to a connection unit through the terminal equipment;
the connection unit splices the connection instruction sent by the terminal equipment, generates a spliced connection instruction, and sends the spliced connection instruction to the communication sub-module;
and the communication sub-module establishes connection with the server according to the connection instruction.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
according to the WiFi communication system provided by the embodiment of the application, the ESP8266 chip is adopted to realize the control sub-Module (MCU) and the communication sub-module (RF unit), so that the energy consumption is low, the transmission distance is short, the data transmission speed is accelerated, the initialization module is adopted to realize the rapid initialization setting of the related parameters and functions of the wireless module, different settings can be carried out according to different use places, and the application range of the system is increased.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the application is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
fig. 1 is a block diagram of a WiFi communication system according to an embodiment of the present application;
fig. 2 is a clock structure diagram of an ESP8266 chip provided by an embodiment of the present application;
FIG. 3 is a pin diagram of an ESP8266 chip provided by an embodiment of the application;
fig. 4 is a flowchart of a method for using a WiFi communication system according to an embodiment of the present application;
fig. 5 is a flowchart of step S401 provided in an embodiment of the present application;
fig. 6 is a flowchart of a step connection unit connection server according to an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, a WiFi communication system provided in an embodiment of the present application includes: initializing a module 1 and a wireless module 2; wherein, the wireless module 2 is integrated with a communication sub-module 3 and a control sub-module 4;
the initialization module 1 is connected with the wireless module 2 and is used for performing initialization setting on module parameters, generating initialization values and sending data of the initialization setting to the control submodule 4.
The communication sub-module 3 is connected with the control sub-module 4, the server and the terminal equipment, and is used for sending the related data of the AT command and the server received from the terminal equipment to the control sub-module 4, sending the calling command to the server and sending the processed related data to the terminal equipment;
specifically, the AT instruction includes: test commands, query commands, set commands, and execute commands.
Further, the AT instruction is transmitted from a terminal device or a data terminal device to a terminal adapter (wireless module 2) or a data circuit terminal device; the test command is used for inquiring the parameters set by the setting command or the internal program and the value range thereof; the query command is used for returning the current value of the parameter; the setting command is used for setting a user-defined parameter value; the execution command is used to execute a variable parameter immutable function controlled by a program within the module.
The control submodule 4 is connected with the initialization module 1 and the communication submodule 3, and is used for initializing communication parameters of the WiFi function and the communication submodule 3 according to the initialization value, generating a calling instruction by the AT instruction, processing related data of the server, and sending the calling instruction and the processed related data to the communication submodule 3.
Specifically, the wireless module 2 adopts an ESP8266 chip.
Further, as shown in fig. 2-3, the ESP8266 chip is a low-power-consumption 32-bit processor, and has multiple general purpose input/output (GPIO) pins and AD sampling channels, and mainly includes an MCU and an RF unit (the antenna needs to be led out by itself), where the MCU has SDIO, SPI, GPIO and I2C interfaces, and can write programs to be used as a common processor, and when the chip is used as a Wi-Fi functional module, the MCU also serves as a MAC layer of Wi-Fi.
In this embodiment, the ESP8266 chip is adopted to implement a control sub-Module (MCU) and a communication sub-module (RF unit), so that the energy consumption is low, the transmission distance is short, the data transmission speed is accelerated, and the initialization module is used to implement quick initialization setting of related parameters and functions of the wireless module, so that different settings can be performed according to different usage sites, and the application range of the system is increased.
In one embodiment, the initialization module 1 comprises: a communication parameter initializing unit 5 and a function initializing unit 6;
the communication parameter initializing unit 5 is connected with the control submodule 4 and is used for initializing and setting the emptying receiving buffer area and the open/close transparent transmission mode;
the function initializing unit 6 is connected to the control submodule 4, and is used for initializing and setting a working mode (STA, AP and mixed mode), an AP mode parameter (SSID, password and Wi-Fi working channel) and a closing instruction echo function.
In one embodiment, the control submodule 4 comprises: an initialization unit 7 and a processing unit 8;
the initialization unit 7 is connected to the initialization module 1 and the communication sub-module 3, and is configured to initialize the working mode, the AP mode parameter, the shutdown instruction echo function of the control sub-module 4, and the emptying receiving buffer and the open/close transparent transmission mode of the communication sub-module 3 according to the initialization value.
Specifically, the procedure for initializing the wireless module 2 is as follows:
A. opening a communication serial port;
B. starting a power supply module to electrify the wireless module 2;
C. setting working parameters of the wireless module 2, and restarting the wireless module 2 to enable the wireless module 2 to be effective;
D. emptying the receiving buffer;
E. closing the instruction display back and starting the transparent transmission mode.
The processing unit 8 is connected with the communication sub-module 3, and is configured to generate a call instruction from the AT instruction, process related data of the server, and send the call instruction and the processed related data to the communication sub-module 3.
Specifically, the processing unit 8 sends an AT command to a server according to a frame structure of the golden gourd; the processing unit 8 stores the relevant data of the server in the data buffer, which facilitates reading the relevant data, and refuses to accept the relevant data when the data in the data buffer exceeds the size of the storage space.
In one embodiment, the control submodule 4 further comprises: a connection unit 9;
the connection unit 9 is connected to the communication sub-module 3, and is configured to splice (splice by adopting a dynamic allocation array manner) the connection instruction sent by the terminal device, generate a spliced connection instruction, and send the spliced connection instruction to the communication sub-module 3.
Specifically, the specific steps of the connection unit 9 to connect the server are as follows:
(1) Checking whether an input parameter ip of the terminal equipment accords with an ipv4 standard of xxx, xxx;
(2) Checking whether the input parameter port is within the range 0-65535;
(3) Setting a successful frame tail and a failed frame tail;
(4) Dynamically allocating memory to the instruction office variable according to the lengths of the input parameter ip and the input parameter port;
(5) And sending an instruction to the server according to the format splicing instruction.
In one embodiment, further comprising: a power supply module 10;
the power module 10 is connected to the initialization module 1 and the wireless module 2, and is configured to provide a power supply voltage for the initialization module 1 and the wireless module 2.
Specifically, the wireless module 2 starts a power supply module before initialization is completed, and the wireless module 2 is powered on; when the wireless module 2 has a problem and needs to be restarted for resetting, the wireless module 2 turns off the power module and turns on the power module again to enable the wireless module to be reset hard.
Further, after the wireless module 2 is reset, the receiving buffer area is emptied, the instruction echo is closed, and the wireless module 2 is set to be in a transmission mode.
The steps of the present system for communication transmission are described below in terms of a complete embodiment.
Example 1:
the initialization module 1 performs initialization setting on communication parameters and WiFi functions, and sends initialization values to the wireless module 2;
the control submodule 4 in the wireless module 2 starts the power supply module 10 to electrify the wireless module 2;
the control submodule 4 initializes the related parameters according to the initialization values;
the control submodule 4 splices the connection instruction input by the terminal equipment in a dynamic distribution array mode;
connecting the router according to the spliced connection instruction, and accessing the wireless module 2 into a wireless local area network;
the connection unit 9 performs rule check on the IP and the port of the remote server input by the terminal equipment; if the connection instruction is legal, splicing the connection instruction, generating a spliced connection instruction, and connecting the corresponding remote server according to the connection instruction;
the terminal equipment sends an AT instruction to the control submodule 4 through the communication submodule 3, and the control submodule 4 sends the AT instruction to a remote server through the communication submodule 3 according to the frame structure of the golden gourd;
the remote server calls corresponding data according to the AT instruction and sends the corresponding data to the control sub-module 4 through the communication sub-module 3;
the control sub-module 4 stores the relevant data in the data buffer and sends the relevant data to the terminal device, which displays the corresponding data.
Referring to fig. 4, a method for using a WiFi communication system includes:
s401, initializing module to initialize module parameter to generate initialization value, and sending the initialization data to control sub module.
And S402, initializing communication parameters of the WiFi function and the communication sub-module by the control sub-module according to the initialization value.
Specifically, the working mode, the AP mode parameter and the closing instruction back display function of the control sub-module, and the emptying receiving buffer zone and the opening/closing transparent transmission mode of the communication sub-module are initialized according to the initialization value initialization unit.
S403, the user selects an AT instruction through the terminal equipment and sends the AT instruction to the communication sub-module.
Specifically, the AT instruction includes: test commands, query commands, set commands, and execute commands.
Further, the AT command is sent from a terminal device or a data terminal device to a terminal adapter (wireless module) or a data circuit terminal device; the test command is used for inquiring the parameters set by the setting command or the internal program and the value range thereof; the query command is used for returning the current value of the parameter; the setting command is used for setting a user-defined parameter value; the execution command is used to execute a variable parameter immutable function controlled by a program within the module.
S404, the communication sub-module sends the AT command received from the terminal equipment to the control sub-module.
S405, the control submodule converts the AT instruction into a calling instruction and sends the calling instruction to the server through the communication submodule.
Specifically, the processing unit sends the AT command to the server according to the frame structure of the golden gourd.
S406, the server calls related data according to the call instruction, and the related data are sent to the control submodule through the communication submodule.
Specifically, the processing unit stores the relevant data of the server into the data buffer area, so that the relevant data can be conveniently read, and when the data in the data buffer area exceeds the size of the storage space, the relevant data is refused to be accepted.
S407, the control submodule processes the related data and sends the processed related data to the terminal equipment for display through the communication submodule.
In one embodiment, as shown in fig. 5, step S401, that is, the initialization module performs initialization setting on the related data, generates an initialization value, including:
s4011, a communication parameter initializing unit performs initializing setting on a receiving buffer area emptying and a transmission mode opening/closing;
s4012, the function initializing unit initializes the operation mode (STA, AP, and hybrid mode), the AP mode parameters (SSID, password, and Wi-Fi operation channel), and the close instruction echo function.
In one embodiment, as shown in fig. 6, further comprising:
s601, the user sends a connection instruction to a connection unit through the terminal equipment;
s602, a connection unit splices connection instructions sent by the terminal equipment (splices in a dynamic array allocation mode), generates spliced connection instructions, and sends the spliced connection instructions to the communication sub-module;
and S603, the communication sub-module establishes connection with the server according to the connection instruction.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A WiFi communication system, comprising: an initialization module and a wireless module; wherein, the wireless module is integrated with a communication sub-module and a control sub-module;
the initialization module is connected with the wireless module and is used for performing initialization setting on module parameters, generating initialization values and sending data of the initialization setting to the control submodule;
the communication sub-module is connected with the control sub-module, the server and the terminal equipment and is used for sending the related data of the AT command and the server received from the terminal equipment to the control sub-module, sending the calling command to the server and sending the processed related data to the terminal equipment;
the control submodule is connected with the initialization module and the communication submodule and is used for initializing communication parameters of the WiFi function and the communication submodule according to the initialization value, generating a calling instruction by the AT instruction, processing related data of the server and sending the calling instruction and the processed related data to the communication submodule;
the initialization module comprises: a communication parameter initializing unit and a function initializing unit;
the communication parameter initializing unit is connected with the control submodule and is used for initializing and setting the emptying receiving buffer area and the opening/closing transparent transmission mode;
the function initialization unit is connected with the control submodule and used for initializing and setting a working mode, AP mode parameters and a closing instruction display function;
the control submodule includes: an initializing unit and a processing unit;
the initialization unit is connected with the initialization module and the communication sub-module and is used for initializing the working mode, the AP mode parameter and the closing instruction back display function of the control sub-module as well as the emptying receiving buffer zone and the opening/closing transparent transmission mode of the communication sub-module according to the initialization value;
the processing unit is connected with the communication sub-module and is used for generating a calling instruction by the AT instruction, processing the related data of the server and sending the calling instruction and the processed related data to the communication sub-module;
the control submodule further includes: a connection unit;
the connecting unit is connected with the communication sub-module and is used for splicing the connecting instructions sent by the terminal equipment, generating spliced connecting instructions and sending the spliced connecting instructions to the communication sub-module.
2. The WiFi communication system of claim 1 wherein the control submodule includes:
the wireless module adopts an ESP8266 chip.
3. The WiFi communication system of claim 1 wherein the AT instructions comprise:
test commands, query commands, set commands, and execute commands.
4. The WiFi communication system of claim 1, further comprising: a power module;
the power module is connected with the initialization module and the wireless module and is used for providing power supply voltage for the initialization module and the wireless module.
5. A method of using a WiFi communication system according to any of claims 1-4, comprising:
the initialization module performs initialization setting on module parameters, generates initialization values and sends data of the initialization setting to the control sub-module;
according to the initialization value, the control submodule initializes the communication parameters of the WiFi function and the communication submodule;
the user selects an AT instruction through the terminal equipment and sends the AT instruction to the communication sub-module;
the communication submodule sends the AT instruction received from the terminal equipment to the control submodule;
the control submodule converts the AT instruction into a calling instruction and sends the calling instruction to the server through the communication submodule;
the server calls related data according to the call instruction and sends the related data to the control submodule through the communication submodule;
the control submodule processes the related data and sends the processed related data to the terminal equipment for display through the communication submodule.
6. The method of claim 5, wherein the initializing module performs initialization setting on the related data to generate an initialization value, comprising:
the communication parameter initialization unit performs initialization setting on the emptying of the receiving buffer area and the opening/closing of the transmission mode;
the function initialization unit performs initialization setting on the working mode, the AP mode parameters and the closing instruction display function.
7. The method of use of claim 5, further comprising:
the user sends a connection instruction to a connection unit through the terminal equipment;
the connection unit splices the connection instruction sent by the terminal equipment, generates a spliced connection instruction, and sends the spliced connection instruction to the communication sub-module;
and the communication sub-module establishes connection with the server according to the connection instruction.
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