CN111726408A - Intelligent home system of high-efficient service - Google Patents
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The invention relates to an intelligent home system with high-efficiency service, which is characterized in that on the basis of a cloud architecture, software and hardware equipment are combined, an intelligent home system for quickly interacting personal and home environment information is built, routing nodes needing to acquire the environment information are set in a specified living environment, the routing nodes and sink nodes are networked in a polling control system mode and perform wireless data transmission, the sink nodes are connected to a port of a computer end, data in the nodes are read and uploaded to a cloud end through the built serial port assistant nodes, a required database and web service are built at the cloud end, and finally, mobile phone application software is set to acquire the cloud end data to realize the interaction between a user and front-end equipment. In the system, a user can obtain detailed information of all routing nodes arranged in a family by a serial assistant, the user can enter a built webpage through a computer to observe family environment information in an office area, the family environment information can be timely known through a mobile phone without the limitation of time and address, and the intelligent home system achieves the purpose that the user can quickly and conveniently observe the family environment information in multiple channels.
Description
Technical Field
The invention relates to an intelligent home system with high-efficiency service, which is an intelligent home system built on the basis of a cloud architecture to realize information acquisition and monitoring of a family living environment and belongs to the field of wireless sensor networks.
Background
With the arrival of the 5G era, the social development of China spans from the information era to the intelligent era, and the intelligent home is taken as an important life sign of the intelligent era, so that the wide realization of the intelligent home marks that China formally enters the intelligent era. On the other hand, China still has huge economic benefits in the aspect of intelligent home furnishing, and the development of intelligent life can effectively promote the development of the economic society of China.
As a key technology for realizing intelligent home life, the intelligent home system is simple, convenient and quick to build and is an important way for widely realizing intelligent home. In the existing intelligent home system, the energy carried by a routing node is limited, the endurance capacity of the node is poor, key environmental information cannot be transmitted in time, and a network does not have the capacity of transmitting information with different priorities. In the intelligent home system, if the node in the sensing layer has poor cruising ability or large energy consumption, the cost of the family expenditure of each intelligent home user is undoubtedly increased; on the other hand, existing networks cannot effectively distinguish environmental information about user's home security issues from general information, such as: the temperature and humidity of the family and the gas concentration of the family are in two priorities, and the gas concentration should be transmitted to the family residents timely and accurately. Therefore, the development of the smart home system needs to solve the problems that the energy consumption of network nodes is too high and information with different priorities cannot be transmitted.
Disclosure of Invention
The invention aims to solve the problems of the existing intelligent home system, a sensing layer of a system is built by using a hardware cc2538cb and a software TinyOS operating system, a transmission layer of the system is built by using Python software at a computer end, a support layer of the system is built at a cloud end, an APP is arranged at a mobile phone end to serve as an application layer, and the intelligent home system capable of efficiently monitoring the home living environment with low power consumption is built through a four-layer structure.
Particularly, the family environment information is prioritized according to the importance degree of the family environment information and is transmitted according to the priority; the intelligent home system mainly comprises four modules, wherein the first module is a sensing layer for collecting home environment information data, the second module is a transmission layer for uploading the data, the third module is a supporting layer for managing the data and user information based on a cloud server, and the fourth module is an application layer for presenting the environment information to a user; the user can obtain accurate family environment information in time through the mobile phone at any place.
The method specifically comprises the following operation steps of building an intelligent home system: firstly, arranging a certain number of routing nodes in a family residential room, wherein the routing nodes are mainly responsible for collecting environment information and are divided into different priority nodes according to the importance degree of the collected information, all the routing nodes are composed of cc25 2538cb chips and sensors, and then a sink node composed of cc20538cb chips is arranged in the area and is responsible for receiving the information collected by the routing nodes, and the mode that the sink node is accessed to the routing nodes is a two-stage polling control system based on complete service and threshold service; secondly, connecting the sink node with a computer port, reading serial port data at the computer end, acquiring environment information received by the sink node and uploading the environment information to a cloud database; then, web service is established in a cloud server, the received environment information is uploaded to a web page, and a database for user management and the web page are established; a supporting layer is not built on physical hardware, and a database and a server are built on a cloud end to realize interaction between a sensing layer and an application layer in a wireless sensor network.
In the sensing layer, the dynamic network in the sensing layer is changed into a relatively fixed cluster structure by using a clustering algorithm, and the service sequence of each node is set in the cluster to realize a specified polling system. In the polling system, there are two routing nodes with different priorities, and the high-priority routing node transmits important data, such as: important data such as infrared detection and gas content, and general data are transmitted by the low-priority routing node, such as: home temperature and humidity, etc. The transmission service rule adopted by the low-priority routing node is a threshold control strategy, and the service rule adopted by the high-priority routing node is a complete control strategy. The number of the high-priority routing nodes is set to be 2 according to the living environment of a common household, infrared data and gas content are respectively collected, the number of the low-priority routing nodes is N, the temperature and the humidity of each room in the household are respectively collected, the low-priority nodes poll and serve the high-priority nodes after receiving service, and all the high-priority nodes are sequentially received by the next low-priority node after being transmitted. In the process of waiting for transmission, the whole node state is in a low power consumption mode, and data collection is started after receiving a beacon frame command of the sink node.
The transmission layer of the intelligent home system is built by using python. The main function of the transport layer is to read the environment data in the sink node and transmit it to the "cloud" database. The design of the transmission layer is a serial port assistant developed based on python, and the serial port assistant not only has the function of computer port transmission setting but also has the function of connecting a cloud. The function of the system is realized by connecting the sink node to a computer port, reading the stored information in the node by setting parameters such as port number, baud rate and the like of data received by a port in a serial port assistant, then connecting a 'cloud' database by the serial port assistant to realize read-write operation on the node, and finally extracting environment information by using a regular expression and uploading the environment information to the 'cloud' database.
The support layer of the intelligent home system is constructed at the cloud end. The supporting layer is characterized by not depending on physical hardware and not needing personnel to carry out special equipment maintenance and repair. Firstly, building a database at the cloud end, and building tables required to be used in the database, wherein the first table is used for managing user information, and the rest tables are used for storing environment information acquired by each routing node; secondly, a web service is established at the cloud end, and the web service mainly comprises two purposes, wherein the first purpose is to manage user information, verify and register the user information transmitted from the front end, and the second purpose is to transmit environment information stored in a database to a mobile phone end.
According to the invention, an application layer of the intelligent home system is established at the mobile phone end. In modern life, a mobile phone becomes an indispensable application tool for people, in order to meet the requirement of people for quickly and conveniently observing data, an application layer of the intelligent home system is built at a mobile phone end, and environment-friendly information is presented to a user by developing a mobile phone application. In the application of the mobile phone, the mobile phone mainly has two functions, namely, the first function of managing the user and the second function of displaying the environmental information. As the mobile phone application accesses the 'cloud' public network IP, the data transmission is not limited by time and place, and the practicability and convenience of the network are greatly enhanced.
The intelligent home system has strong functionality and high requirements on hardware equipment and software, wherein basic hardware equipment of a perception layer is the most important and is mainly responsible for acquiring environmental information, and the whole intelligent home system does not play any role any more if information acquisition fails. The guarantee of the effective operation of the sensing layer is the key of the whole intelligent home system, wherein the long-time endurance of the nodes is required, and the sensing layer needs an efficient and energy-saving media access control mode. On the other hand, because the sensing layer and the transmission layer use a large amount of physical hardware, if the support layer reuses the hardware, the operation cost of the network is increased, and the introduction of the cloud server not only saves the cost, but also reduces the personnel for special hardware maintenance. With the dependence of people on the mobile phone, the development of the intelligent home system at the application layer is also set at the mobile phone end along with the trend of the era, so that the environment information can be presented to users friendly, the use mode of the users is simpler, the use range is wider, and the intelligent home system has a vital significance for the development of the intelligent home system.
Drawings
Fig. 1 is a four-layer architecture diagram of a prioritized wireless sensor network architecture.
FIG. 2 is a routing node transmission sequence diagram
Fig. 3 is a flow chart of routing node operation.
Fig. 4 is a serial assistant structure diagram.
Fig. 5 is a mobile phone application data flow diagram.
Fig. 6 is a diagram of a cell phone application interface.
Detailed Description
Embodiments of the present invention will be described in detail with reference to the accompanying drawings, and will be specifically realized in the following ways.
Example 1: the specific implementation method of the intelligent home system for high-efficiency service mainly comprises four layers, and the structure diagram of the system is shown in fig. 1. In the four-layer structure, the bottom layer is a sensing layer, and the sensing layer of the intelligent home system is constructed by using a TinyOS operating system and a cc2538cb single chip microcomputer. The sensing layer is used as a core layer and a base layer of the whole intelligent home system, and the good performance of the sensing layer determines the practicability of the intelligent home system. The Tiny OS operating system is a special system designed by the University of California, Berkeley for WSN features. Compared with other operating systems, the Tiny OS is an open source lightweight operating system with the characteristics of low power consumption, small volume, event-driven mode and the like, provides some common components, can also expand the components, and independently writes component modules to be used as service components in application programs. Due to good performance, the intelligent home system sensing layer is used as an operating system of all nodes in the sensing layer of the intelligent home system.
The cc2538cb is a low-power consumption single chip microcomputer with a cc2538 chip as a core, and other main hardware formed by the single chip microcomputer is a USB interface, a Reset key, 14PinJTAN, an antenna interface, an IO port, an LED lamp and a PL2303 chip. The cc2538 chip is the core of the whole singlechip, is the operating system of the singlechip, is used for carrying out the loaded compiling program, and is characterized in that the power supply current required by the chip is 0.4 microampere, and belongs to a low-power chip. The USB interface is a power supply interface of the whole singlechip and is also an asynchronous transmission interface of the singlechip, and the USB interface only provides power when being independently connected with the power supply, but can provide power and communicate with a computer when being connected to the computer. The Reset key is a Reset key, the whole single chip microcomputer is started after the Reset key is pressed down, and the program in the cc2538 is executed again. 14PinJTAN is mainly used to load compiler into cc2538 chip. The antenna interface is mainly used for connecting the SMA 2.4G antenna to realize the wireless communication function of the singlechip. The IO port is mainly used for connecting the sensor, and the IO port has the functions of providing a power supply for the sensor and receiving the environmental data collected by the sensor. The LED lamp has three lamps, the colors of the three lamps are different, the three lamps are respectively red, yellow and green, and the three lamps can be used for displaying different states of the single chip microcomputer. The PL2303 chip can realize the interconversion of RS232 signals and USB signals, and can enable the single chip microcomputer to be directly connected to a computer. The cc2538cb single-chip microcomputer is powerful in function and low in power consumption, and is used as hardware equipment of all nodes in a sensing layer.
Therefore, the function setting of all nodes in the sensing layer is realized by compiling programs in a TinyOS operating system, and then the compiled programs are implanted into a cc2538cb singlechip to realize the actual acquisition function. In the TinyOS operating system, program compilation on nodes is mainly divided into two types, namely, sink nodes and routing nodes. The main function of the sink node is to control the sequence of data transmission of the routing nodes and receive the environment information collected by the routing nodes. In order to realize the transmission sequence of the poll control of the aggregation nodes, the invention realizes the function by changing the superframe structure of IEEE 802.15.4. The superframe structure of ieee802.15.4 mainly includes a beacon frame, a data frame, an acknowledgement frame, and a command frame. The invention realizes the polling control mode by adding the service address field into the beacon frame and adding the node number into the data frame. The specific implementation method of the polling control is that after a cluster structure is established, a gathering node firstly establishes a polling list, the sequence of the polling list is set to be that the serial numbers 1 and 2 respectively represent high-priority routing nodes for collecting infrared information and gas concentration, the serial numbers 3 to N +2 respectively represent low-priority routing nodes for collecting temperature and humidity, and the low-priority routing nodes are written into a storage area after the polling list is set. In the polling list, each routing node has a corresponding sequence number, and polling control can be realized in the aggregation node according to the sequence number of each node. The polling sequence of the invention is that the low priority routing node serves the high priority routing nodes once and then serves the high priority routing nodes in sequence, after the two high priority routing nodes finish transmitting data, the low priority routing nodes receive service in sequence, and the sequence chart of all the nodes receiving service is shown in figure 2.
When the polling control transmission sequence of the set nodes is good, the service strategies of the high-priority routing node and the low-priority routing node are required to be set. The invention realizes the two node service strategies by adding a polling mode field in a beacon frame and adding two fields of a transceiver state and a residual data packet count in a data frame. After receiving the beacon frame, both the nodes are waken up from sleep and send the cached data in the memory. When wireless communication is established with a sink node, a boot interface is called to start radio frequency communication in a NesC program; after the radio frequency is started, the node reads the data information amount entering the node from the memory, and then calls a sock. The difference between these two nodes is whether or not to send out a packet that arrives at the node during the service period. The high-priority routing node takes full service, and the node must transmit all the data packets in the node when receiving the service; the low-priority routing node takes threshold service and only needs to send a data packet read from the memory when the radio frequency is started. The flow chart for the operation of both routing nodes is shown in fig. 3, where full service is on the left and threshold service is on the right.
In the previous section, a method for implementing a transmission order of a sink node polling control routing node and a transmission service policy of the routing node is introduced, and the collection of home environment information by the routing node is implemented below. Due to the limited memory of the network routing node, the time length for collecting data needs to be limited by limiting the number of data packets. The method is to acquire data at regular time, namely, to acquire data at intervals. In the process, a timerMilliC component of the HIL layer is required to complete the function of collecting data in a timing mode, and the function implementation of the timerMilliC component can be completed by a Timer interface. The specific method is that firstly, a time trigger time is set through event void timer fixed () }, a program for triggering acquisition of environment data is contained in the time trigger time, and then a call timer fixed period (256) instruction is called to complete the function of timing acquisition of data. The meaning of the Call timer _ startperiodic (256) instruction is to execute the event void timer _ fixed () }onceevery 256 ms. After the routing node receives the transmission instruction of the sink node, the radio frequency module is started through error _ tsplit control.start () to establish a point-to-point wireless communication mode with the sink node, and after data transmission is finished, the radio frequency module is closed by calling error splitpontrol.stop () and communication connection is finished.
After the sensing layer is built, the transmission layer is designed as follows. After the sink node receives the collected information of the routing node, the information in the sink node needs to be uploaded to the cloud. The serial port assistant is developed by combining python in a serial port communication mode, and has the functions of automatically identifying the serial port, reading and displaying serial port information, connecting a database and uploading data. Firstly, building an interface by utilizing PyQt5, managing QGridLayout by using network layout in the interface layout, adding controls such as port numbers, database connection and the like through QLable, setting the control positions by grid. Secondly, after the interface is set, the functions of serial port communication, database connection and the like are realized by acquiring control parameters; and finally, after the serial assistant is successfully built, adding an information reading function in a subsequent program, namely extracting environment data by using a regular expression and writing the environment data into a corresponding table of a cloud database. In the process, the sink node needs to use a PL2303 chip to convert RS232 signals into USB signals, and the USB signals are directly connected with a computer end in such a way. The design block diagram of the serial assistant is shown in fig. 4.
After the transmission layer is built, a supporting layer needs to be built at the cloud end. The support layer mainly aims to realize the storage of environment information and the management of user information. Firstly, installing a MySQL database at the cloud end, and building a table to be used in the database, such as: a user information table and an environment information table for storing data collected by each node; finally, a web service is established in the cloud through Eclipse, and the aim of the web service is to call the data in the database into a web page for a user to use.
After the supporting layer is built, a user layer with human-computer interaction needs to be built. The layer is mainly realized by developing a mobile phone application through ADT (android Developer tool) software, and the application can realize user management and environmental information presentation. In user management, login authentication and registration addition are mainly performed on a user. The login verification is to obtain the user name and the password of the user, package the two fields into a json object and transmit the json object to the back end, the back end obtains the user name and the password field in the database for comparison, the back end returns the comparison result to the front end, and the front end judges and jumps to different interfaces according to the result. Fields to be registered during registration addition are also encapsulated into json objects to be transmitted to the back end, the back end analyzes the json objects to obtain the fields and inserts the fields into a background database, the fields are returned to a login interface after the registration is successful, the flow chart is shown in figure 5, and the login interface of the user is shown in figure 6. In the presentation of the family environment information, a mobile phone application end sends a POST request to a web page in a support layer to inquire environment data, and the inquired data is encapsulated into a json object to be returned to the front end; and finally, the front end analyzes the json object returned by the back end and displays the json object to the user, a flow chart is shown in fig. 5, and a family environment information display interface is shown in fig. 6.
According to the invention, different priorities are distinguished according to the importance of the family environment information, and the routing nodes for collecting the environment information are prioritized, so that the important information can be transmitted in time; secondly, computer data observation is achieved through a serial assistant built by python, and the serial assistant can be connected with a cloud database to achieve uploading of environment information; finally, user management and environment information presentation are achieved through mobile phone application developed by the Android Developer Tool, a user can observe family environment information change through the mobile phone application at any time and any place, the intelligent home system can bring great convenience to the user, and efficient service can be provided for the user.
Claims (8)
1. The utility model provides an intelligent home systems of high-efficient service, its characterized in that utilizes hardware cc2538cb and software tinyOS operating system to build the perception layer of system, uses the transmission layer that Python software built the system at the computer end, builds the supporting layer of system at "high in the clouds", sets up an APP as the application layer at the cell-phone end, builds an intelligent home systems of high-efficient low-power consumption control family living environment through four-layer structure, specifically is: the method comprises the steps of firstly, prioritizing the family environment information according to the importance degree of the family environment information and transmitting the information according to the priority; the intelligent home system mainly comprises four modules, wherein the first module is a sensing layer for collecting home environment information data, the second module is a transmission layer for uploading the data, the third module is a supporting layer for managing the data and user information based on a cloud server, and the fourth module is an application layer for presenting the environment information to a user; the user can obtain accurate family environment information in time through the mobile phone at any place.
2. The intelligent home system for the efficient service according to claim 1, which is characterized by comprising the following specific steps of: firstly, arranging a certain number of routing nodes in a family residential room, wherein the routing nodes are mainly responsible for collecting environment information and are divided into different priority nodes according to the importance degree of the collected information, all the routing nodes are composed of cc25 2538cb chips and sensors, and then a sink node composed of cc20538cb chips is arranged in the area and is responsible for receiving the information collected by the routing nodes, and the mode that the sink node is accessed to the routing nodes is a two-stage polling control system based on complete service and threshold service; secondly, connecting the sink node with a computer port, reading serial port data at the computer end, acquiring environment information received by the sink node and uploading the environment information to a cloud database; then, web service is established in a cloud server, the received environment information is uploaded to a web page, and a database for user management and the web page are established; a supporting layer is not built on physical hardware, and a database and a server are built on a cloud end to realize interaction between a sensing layer and an application layer in a wireless sensor network.
3. The smart home system for efficient service according to claim 1, wherein the home environment information data is index data of room temperature, air humidity, gas concentration and the like of a home.
4. The smart home system of claim 1, wherein the network media control access protocol in the sensing layer employs a full service and threshold service two-level polling control system, and the routing nodes are divided into different priorities according to the importance degree of the environmental information, that is, the routing node collecting general information is a low priority node, and the routing node collecting important information is a high priority node; all the routing nodes are awakened for data acquisition only after receiving the transmission command of the sink node, and enter a dormant state after transmission is finished to keep a low power consumption mode.
5. The smart home system with high service efficiency according to claim 1, wherein the sink node is used as a central node of network data, is connected with a computer terminal, and obtains environmental information received by the sink node through the computer terminal and uploads the environmental information to a cloud database; all the routing nodes can collect the surrounding environment information of the routing nodes and transmit data transmitted by other routing nodes, and the functions of collecting, storing and sending the data are realized.
6. The intelligent home system with high service efficiency according to claim 1, wherein the computer end reads data in the sink node through a serial assistant constructed by python, extracts required environment information, and uploads the environment information data to a cloud database for storage through the serial assistant.
7. The intelligent home system with the high-efficiency service function is characterized in that a user can realize the presentation of a user information management module, a data display module and environmental data on a user layer in a mode that a user accesses a cloud server through mobile phone application software.
8. The smart home system with high service efficiency according to claim 1, wherein the web service in the support layer is established in a cloud, and the application layer can obtain the required information only by accessing a public network IP of a cloud server, which means that a user can observe data changes of the home environment without being limited by location and time in an internet mode, and the user can enter a home environment information page by inputting a website through a computer.
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| CN112526966A (en) * | 2020-11-20 | 2021-03-19 | 广西玉柴机器股份有限公司 | Automatic testing method and system for controller HIL |
| CN112526966B (en) * | 2020-11-20 | 2024-04-05 | 广西玉柴机器股份有限公司 | Automatic test method and system for HIL (high-performance liquid chromatography) of controller |
| CN115361251A (en) * | 2022-07-15 | 2022-11-18 | 杨志军 | Multi-robot cooperative communication system based on polling MAC protocol |
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