CN103176445B - Based on intelligent home control system and the control method thereof of BLC2200 - Google Patents

Abstract

The invention discloses a BLC2200-based smart home control system and its control method, which includes: a user end, used to send an operation command to a smart home controller; a smart home controller, used to receive the operation command sent by the user end, And send a control command to the smart home device; the smart home device is used to receive the operation command sent by the smart home controller and respond to the operation command, and the smart home device can also send a feedback command to the smart home controller. The use of radio frequency control technology to replace infrared remote control technology solves the problem of visual distance limitation and one-way communication, and provides great convenience for controlling various home appliances. In addition, the smart home control system adopts low power consumption technology, extending the Lifespan of the remote control.

Description

BLC2200-based smart home control system and its control method

technical field

The invention relates to the technical field of smart home control, in particular to a BLC2200-based smart home control system and a control method thereof.

Background technique

The development of computer technology, information technology, and automation control technology improves people's material living standards and changes people's lifestyles and work habits. At the same time, it also poses challenges to traditional houses. The progress of society, technology, and economy makes people pay more attention to family rooms. The concept of the environment has changed dramatically. People's requirements for furniture are not only physical space, but also a highly safe, convenient and comfortable home environment. With the increasingly obvious trend of integration of consumer electronics, computers, and communications, modern smart homes will become an inevitable choice for modern society and families in the 21st century due to their safety, efficiency, comfort, convenience, and intelligence.

Since the 1870s, infrared remote control technology (IR) has been popular, which can easily control many devices, but with the wide application, the limitations and shortcomings of infrared remote control technology gradually emerged, because the high-intensity light emitted by the screen, It is more difficult to use infrared remote control technology on large-screen high-definition TVs, followed by viewing distance limitations and one-way communication. With the increasing complexity of consumer electronics and the new trend of device storage capabilities, IR technology is gradually being replaced by new technologies, such as radio frequency control technology.

Radio frequency control technology enables users to control entertainment equipment more accurately and simply. The device only needs to press the button once, and does not need multiple buttons to execute the command. The two-way communication method provides a new platform for the consumer electronics industry, and the radio frequency control technology can better adapt to the development of device control methods. Therefore, new functions drive the development and integration of automation equipment.

The so-called smart home system is an efficient, safe, comfortable and convenient living environment based on the residence as a platform, with construction equipment, network communication, information appliances and equipment automation, integrating system, structure, service and control. At present, the smart home products in the domestic market are basically a system combination of several independent subsystems, not a real smart home system. A smart home system should be a system that uses a unified technical standard to realize the connection and communication between various monitoring devices in the home. It can realize the unified control of multiple subsystems, such as lighting system, security system, etc.

Therefore, seeking a wireless communication technology to realize the unified control of the smart home system composed of multiple subsystems is an important subject direction and research goal for technicians engaged in communication technology application research.

Contents of the invention

The purpose of the present invention is to provide a BLC2200-based smart home control system and its control method, which solves the problem of unified radio frequency remote control of multiple devices in the family, and can well improve the living standards of users.

In order to solve these problems in the prior art, the technical solution provided by the invention is:

A smart home control system based on BLC2200, characterized in that the smart home management system includes a user terminal, a smart home controller and smart home equipment, wherein

The client end is used to send operation commands to the smart home controller;

The smart home controller is used to receive the operation command sent by the client and send the control command to the smart home device;

The smart home device is configured to receive an operation command sent by the smart home controller and respond to the operation command, and at the same time, the smart home device can also send a feedback command to the smart home controller.

For the above technical solution, the inventor has a further optimized implementation.

As an optimization, the smart home device is assembled on a household appliance, including a first external processing unit and a first wireless unit connected through an RS-232 serial port, and the first external processing unit is used to respond to the smart home controller The issued command collects home appliance information and external environment information, and the first wireless unit is used to receive, process, store and send home appliance information and external environment information from the RS-232 terminal.

As an optimization, the smart home controller is a handheld device, including a second external processing unit and a second wireless unit connected through an RS-232 serial port, and the second external processing unit has a timeout setting/response client The function of issuing commands and sending commands to the smart home device module, the second wireless unit is used to receive, process, save and send home appliance information and external environment information from the RS-232 terminal.

Furthermore, the smart home controller and smart home equipment are configured with three frequencies for wireless communication, and the first external processing unit of the smart home equipment is provided with a frequency control device for frequency switching and closing radio frequency reception .

As an optimization, the hardware platform of the smart home controller module and the smart home equipment module is a chip device BLC2200 integrated with a microprocessor and a 2.4GHz wireless transceiver unit.

The present invention also provides a control method suitable for the above-mentioned smart home control system based on BLC2200. The control method specifically includes the following control steps:

Ⅰ. The smart home equipment modules are respectively assembled on each home appliance, the first external processing unit responds to control and collects home appliance information and external environment information, and the first wireless unit receives the processed and saved home appliance information and external environment information from RS-232 information, and configure three frequencies to broadcast home appliance information and external environment information;

Ⅱ. After the smart home device module receives the broadcast signal, it processes the home appliance information and the external environment information in combination with its own unique address information;

Ⅲ. The smart home controller module and the smart home equipment module perform communication self-inspection through their respective wireless units, and the smart home equipment module sends a communication waiting signal or no feedback to the smart home controller module;

Ⅳ. When the smart home device module receives the request control signal from the smart home controller module, the smart home device module sends the collected home appliance information and external environment information to the smart home controller module, and the smart home controller module according to the home appliance information and external environment information processing results, and send control signals to the smart home device module;

Ⅴ. When the smart home device module receives the control signal, the smart home device module at the specified address responds to the corresponding control and sends the feedback signal to the smart home controller module; when the smart home device module at the specified address does not respond to the corresponding control or responds to the control If the feedback signal is not sent to the smart home controller module afterwards, the smart home controller module will send the control signal to the smart home device module again.

As an optimization, when the first wireless unit in step I broadcasts and transmits radio frequency signals, the radio frequency reception is turned off. The home appliance information and external environment information in step I include home appliance ID information, ambient temperature and light intensity information.

As an optimization, in steps III, IV and V, point-to-multiple wireless data communication is used between the smart home controller module and the smart home device module.

Compared with the scheme in the prior art, the advantages of the present invention are:

The invention describes a BLC2200-based smart home control system and its control method. The invention uses radio frequency control technology to replace infrared remote control technology, solves the problem of visual distance limitation and one-way communication, and provides a convenient way for controlling various home appliances. Great convenience, in addition, the smart home control system adopts low power consumption technology, which prolongs the service life of the remote control.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a schematic block diagram of the structure of a smart home controller and a smart home device in an embodiment of the present invention;

Fig. 2 is a system structural block diagram of the smart home control system in the embodiment of the present invention;

Fig. 3 is the working flowchart of the smart home device in the embodiment of the present invention;

Fig. 4 is a working flow chart of the smart home controller in the embodiment of the present invention.

detailed description

The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

Example:

This embodiment describes a smart home control system based on BLC2200. This embodiment controls various devices in the family through radio frequency communication technology for household appliance information and external environment information, and realizes the effect of remote control of various household appliances. The entities that communicate through the wireless channel include two modules, the smart home controller and the smart home device. The two types of modules contain their own wireless units and external processing units, and the wireless units and external processing units in each type of module pass RS- 232 serial port connection, as shown in Figure 1.

In order to express clearly and concisely, each functional module and wireless communication data are defined as follows, and will be referred to by this definition in the subsequent description: the smart home controller module is a class A module, and the smart home device module is a class B module module. Each of these two types of modules can be regarded as a communication terminal, which is responsible for realizing the data forwarding and transmission between the RS-232 serial port and the wireless network. In addition, the wireless unit network communication port of each module is defined as the 'R' end, and the RS-232 communication port is defined as the 'M' end. If a certain type of data frame is received from the 'R' or 'M' end and needs to be processed, it is said that this type of data frame is adapted to the 'R' or 'M' end; if a certain type of module can recognize and process a certain type of frame A data frame means that the data frame is suitable for a certain type of module, which can be described as: A-means that this type of data frame is suitable for the R terminal and M terminal of a type A module; BR-means that this type of data frame is only suitable for the R terminal of a type B module end...and so on.

For Class A and B modules, the Class A module is a handheld device. Receive feedback signals from class B modules on channels 15, 20, and 25, and send radio frequency control signals to class B modules; class B modules are respectively set on home appliances, receive radio frequency control signals from class A modules, and send radio frequency control signals to class A modules Feedback signal.

The system block diagram of the smart home control system based on BLC2200 as shown in Figure 2. When the B-type module installed on the home appliance collects the data of home appliance information and external environment information, and sends the data and ready information to the A-type module after preliminary processing, the A-type module receives the information of the B-type module, and the A-type module Respond and send a control signal to the Class B module.

The broadcast information received by the class B module from the class A module contains the address of the target device. The class A module and the class B module need to go through a pairing mechanism, and the class B module with the specified address can respond to the control of the class A module, and the class B module starts a Timeout mechanism, when the B-type module does not respond to the control of the A-type module within the specified time, the operation will be abandoned, and the A-type module will send the control command to the B-type module again. The processing of these time-out mechanisms is completed by the external processing unit, because this is a data processing related to a specific application.

In the embodiment of the present invention, the structures of modules A and B are consistent, wherein the external processing unit (MCU unit) and the wireless transceiver unit are connected through a bus, and the two constitute a wireless data transmission module capable of realizing various functions. This embodiment adopts a SoC chip BLC2200, which integrates an MCU microprocessor unit and a 2.4GHz wireless transceiver unit. The MCU microprocessor unit is a processor with MCS-51 core, which integrates a series of functions such as general-purpose serial port and timer/timer. The frequency band of the wireless transceiver unit is the 2.4GHz ISM frequency band, and its physical layer is designed according to the IEEE802.15.4 standard. Its data transmission rate is 250kbps. The frequency band is divided into 16 channels, and each channel occupies 5MHz. bandwidth. The debugging method of Direct Sequence Spread Spectrum (DSSS) and 0-QPSK improves the anti-interference ability of wireless signals. The client transmits data to the MCU unit of the wireless data transmission module of the system through the RS-232 universal serial communication bus circuit. The MCU unit packs the data and then sends it to the wireless transceiver unit through the wireless antenna and matching circuit.

Regarding the description of the frame format involved in the BLC2200-based smart home control system, the following three frame types are defined:

(1) The user presses the control command frame

(2) The user repeats the control command frame

(3) The user releases the control command frame

The functions and workflow of each module in the bus priority wireless transmission system can be summarized as follows:

Class A module

The class A module is only responsible for sending the data frames received from the M terminal from the R terminal with a fixed cycle and communication frequency. Since the data received from the M terminal is very simple, it is only the ID information of the home appliance. These can be used in the actual implementation. The ID information is directly configured in the A-type module, and the module only needs to send these ID data when it is running. In order to prevent interference at nearby intersections, the Class A module can be configured with three frequencies for broadcasting and sending of ID information.

The specific communication process includes:

(1) When receiving configuration messages such as home appliance numbers from the M terminal, respond and process them.

(2) When a configuration message such as the number of the home appliance is received from the M terminal, the message is transmitted from the R terminal at three frequencies.

Class B module

The specific communication process includes:

(1) When the user presses the control command frame sent by the A-type module from the R terminal, it is sent out from the M port, and the feedback information is sent to the A-type module, and the response processing is performed at the same time.

(2) When the user presses the control command frame sent by the A-type module from the R terminal, it sends feedback information to the A-type module and requests the A-type module to send the user to repeat the control command frame.

(3) When the user release control command frame sent by the A-type module is received from the R terminal, it is sent out from the M port. and handle the response.

The above is an introduction to wireless signal transmission between various modules, and then combined with the two types of module work flow charts shown in Figure 3 and Figure 4, how each functional module realizes its smart home control.

As shown in Figure 3 is the work flow diagram of the smart home equipment module. After the module is initialized, it enters the cyclic detection state. First, it detects whether there is data at the serial port. If there is no data, it checks the device interruption. , then return to continue to detect whether there is data at the serial port. And when it is detected that there is indeed data at the serial port, it will be checked for integrity. If it is not complete, the data packet will be discarded and returned to continue to detect whether there is data at the serial port. For the complete situation of the data packet, according to According to the difference of the packet type, write in the flash memory and set the module accordingly, or read the specified frame and send it out from the serial port.

As shown in Figure 4 is the work flow diagram of the smart home controller module. In the figure, the workflow of the smart home controller module is roughly the same as that of the aforementioned smart home equipment module, the only difference is that after the complete command frame packet type received by the serial port, it is simply processed and then transmitted from the radio frequency The same part is sent out and the detection of the presence or absence of data at the radio frequency end, so the same part will not be repeated. In particular, when the radio end detects that there is indeed a complete data frame, corresponding to various situations, the radio end will have the following feedback actions:

If it is a data frame sent by a type A module, unpack it and send it out from the serial port, and send it directly to the type B module at the RF end; if it is a data frame sent by a type B module, unpack it and send it out from the serial port to perform operations. In all cases after completion, the used data will be discarded, and the view of the serial port data will be returned.

After laboratory simulation: the BLC2200 smart home control system designed by this invention uses radio frequency control technology instead of infrared remote control technology, which solves the problem of visual distance limitation and one-way communication, and provides great convenience for controlling various home appliances The smart home control system adopts low power consumption technology, which prolongs the service life of the remote control.

The above examples are only to illustrate the technical conception and characteristics of the present invention, and its purpose is to allow people familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. based on an intelligent home control system of BLC2200, it is characterized in that, described intelligent household management system comprises user side, the intelligent domestic appliance controller and intelligent home device, wherein

User side, for the intelligent domestic appliance controller transmit operation order;

The intelligent domestic appliance controller, for receiving the operational order that user side sends, and sends control command to intelligent home device; Described the intelligent domestic appliance controller is handheld device, comprise the second external processing unit and the second radio-cell being undertaken being connected by RS-232 serial ports, described second external processing unit has timeouts and the response order that sends of user side and sends the function of order to intelligent home device module, and described second radio-cell is used for receiving from RS-232, process, preserve and send household electrical appliances information and external environment information from radio-frequency head;

Intelligent home device, for receiving the operational order that the intelligent domestic appliance controller sends, and responds this operational order, and intelligent home device also can send feedback command to the intelligent domestic appliance controller simultaneously; Described intelligent home device is assemblied on home appliance, comprise the first external processing unit and the first radio-cell being undertaken being connected by RS-232 serial ports, described first external processing unit is for the order that responds the intelligent domestic appliance controller and send and gather household electrical appliances information and external environment information, and described first radio-cell is used for receiving from RS-232, process, preserve and send household electrical appliances information and external environment information from radio-frequency head;

Described the intelligent domestic appliance controller and intelligent home device are all configured with three kinds of frequencies for radio communication, are provided with for frequency error factor and the frequency control apparatus of closing radio frequency reception in the first external processing unit of described intelligent home device.

2. the intelligent home control system based on BLC2200 according to claim 1, it is characterized in that, the hardware platform of the intelligent domestic appliance controller module and intelligent home device module is the chip device BLC2200 being integrated with microprocessor and 2.4GHz wireless transmit/receive units.

3. based on a control method for the intelligent home control system of BLC2200, it is characterized in that, control method specifically comprises following rate-determining steps:

I, intelligent home device module is assemblied on each home appliance respectively, first external processing unit response limiting and collection household electrical appliances information and external environment information, first radio-cell receives household electrical appliances information that is treated, that preserve and external environment information from RS-232, and configures the broadcast transmission that three kinds of frequencies carry out household electrical appliances information and external environment information;

II, after intelligent home device module receives broadcast singal, and in conjunction with self exclusive address information, household electrical appliances information and external environment information are processed;

III, the intelligent domestic appliance controller module carries out communicating self-inspection with intelligent home device module by respective radio-cell, and intelligent home device module sends a communication standby signal or without feedback to the intelligent domestic appliance controller module;

IV, after the control request signal received from the intelligent domestic appliance controller module when intelligent home device module, the household electrical appliances information of collection and external environment information are sent to the intelligent domestic appliance controller module by intelligent home device module, the intelligent domestic appliance controller module, according to household electrical appliances information and external environment information processing result, transmits control signal to intelligent home device module;

V, intelligent home device module receives control signal, and the intelligent home device module responds of assigned address controls accordingly and feedback signal is sent to the intelligent domestic appliance controller module; After the intelligent home device module of assigned address does not respond corresponding control or response limiting, feedback signal is not sent to the intelligent domestic appliance controller module, the intelligent domestic appliance controller module will transmit control signal to intelligent home device module again.

4. the control method of the intelligent home control system based on BLC2200 according to claim 3, is characterized in that, when the first radio-cell carries out radiofrequency signal broadcast transmission described in step I, closes radio frequency reception.

5. the control method of the intelligent home control system based on BLC2200 according to claim 3, is characterized in that, the information of household electrical appliances described in step I and external environment information comprise the id information of household electrical appliances, environment temperature and illumination intensity information.

6. the control method of the intelligent home control system based on BLC2200 according to claim 3, is characterized in that, in step III, IV and V, is point-to-points wireless data communications between described the intelligent domestic appliance controller module and intelligent home device module.