CN202872774U - Interactive terminal with power line carrier communication access function - Google Patents

Abstract

This invention provides an interactive terminal with power line carrier communication access, comprising: a power line carrier communication module, a microcontroller processing module, a networking module, and a user interaction module. The power line carrier communication module employs a power line carrier communication chip design to modulate and demodulate the carrier signal; the power line carrier communication chip used is the MI200E chip. Using this interactive terminal with power line carrier communication access for data communication over power lines fully leverages the advantages of existing physical links in power line networks, such as ease of maintenance, ease of promotion, ease of use, and low cost.

Description

Interactive terminal with power line carrier communication access

technical field

The utility model relates to the technical field of smart home, in particular to an interactive terminal with power line carrier communication access.

Background technique

With the development of the economy and the advancement of science and technology, the concept of smart home has gradually entered people's lives. From the point of view of use, smart home is composed of three networks: home network, community management network, and computer Internet. Through the full application of these three networks, networked intelligent monitoring and management, the power supply service unit can realize the Electricity information interaction and meter reading service, home safety, electricity safety, and centralized management and control of electric equipment, users can grasp the electricity consumption information of household appliances in real time, and obtain electricity consumption analysis and suggestions, electricity bill information, power outage information from the system Notification, electricity tariff standard, electricity service survey and other services.

The interactive terminal is the gateway of the smart home and the link to realize the communication between the home network and the community management network. But at present, the existing interactive terminals mainly use the RJ45 network cable access method to realize the communication between the interactive terminal and the management network. The access method is to use wireless communication technologies such as GPRS/CDMA, wireless digital, and Wi-Fi to access, and there are problems such as tariffs, unstable penetration capabilities, and frequency resource occupation.

Power Line Communication (PLC) is a communication technology for data transmission through power lines. This technology loads the high-frequency signal carrying information onto the power line, uses the power line for data transmission, separates the high-frequency signal from the power line through a dedicated power line modulation/demodulation module, and transmits it to the terminal device.

Utility model content

In order to overcome the above-mentioned problems in the prior art, the utility model provides an interactive terminal accessed through power line carrier communication.

The technical scheme adopted in the utility model is:

The interactive terminal with power line carrier communication access includes: power line carrier communication module, single-chip processing module, networking module, and user interaction module, of which:

The power line carrier communication module is connected to the power line, uses the power line to transmit data, realizes the access of the smart home, and makes the interactive terminal a smart home network node;

The power line carrier communication module is designed by using a power line carrier communication chip to modulate and demodulate the carrier signal, and the power line carrier communication chip is an MI200E chip;

The single-chip processing module communicates with the power line carrier communication module, the networking module and the user interaction module respectively through the serial port.

The single-chip processing module is equipped with smart home function software, which analyzes and processes instructions interacting with the interactive terminal to realize smart home functions. The instructions can be home safety, electricity safety, electricity equipment monitoring, electricity information, electricity bill information, power outage notification, electricity tariff standards, electricity service survey, etc., and are information instructions serving smart homes.

The networking module includes a Bluetooth communication module and a G24 wireless communication module. The G24 wireless communication module is used for interactive connection with smart home appliances or smart sockets to realize smart home functions; the Bluetooth communication module is used for connecting with smart phones or tablet computers to realize smart home appliances. The mobile phone or tablet computer is virtual as the interactive device of the interactive terminal. The smart phone or tablet computer runs the smart home function software, and uses the bluetooth communication interface to communicate with the interactive terminal.

The user interaction module includes a display unit, an input control unit and a storage unit. the

The beneficial effect of the utility model is that the power line is the most popular physical communication medium with the widest coverage in every family and unit. Use the interactive terminal power line with power line carrier communication access for data communication, give full play to the existing physical links of the power line network, easy maintenance, easy promotion, easy use, low cost and other beneficial effects, and effectively solve the communication shortcomings of current smart home access , Reduce the construction cost, operation and maintenance cost and promotion difficulty of smart home system.

Description of drawings

Fig. 1 is a structural block diagram of the utility model embodiment;

Fig. 2 is the schematic diagram of the carrier communication module of the present invention;

Figure 3 is a schematic diagram of the data exchange between the single-chip microcomputer and MI200E;

Fig. 4 is a working principle diagram of the bluetooth communication module;

Figure 5 is a working principle diagram of the G24 wireless communication module.

In the figure, 1. Power line carrier communication module; 2. Single-chip processing module; 3. Networking module; 4. User interaction module; 5. Interactive terminal; 6. Home monitoring; 7. Home network; 8. Power line; 9. Community management Network; 10. Computer internet network; 11. Carrier collector; 12. Carrier concentrator; 13. MI200E chip; 14. SPI interface; 15. Reset; 16. MI200E chip selection signal; 17. MI200E serial clock; 18. MI200E serial data output; 19, MI200E serial data input; 20, MI200E frame indicator pin; 21, Bluetooth serial data output; 22, Bluetooth serial data input; 23, Bluetooth interrupt signal; 24, Bluetooth serial communication master-slave 25. Bluetooth communication module; 26. G24 wireless communication module serial port data output; 27. G24 wireless communication module serial port data input; 28. G24 wireless communication module.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the utility model.

As shown in FIG. 1 , the interactive terminal with power line carrier communication access provided by the utility model includes: power line carrier communication module 1 , single-chip processing module 2 , networking module 3 , and user interaction module 4 . The single-chip processing module 2 is composed of a single-chip control circuit, and the single-chip processing module 2 communicates with the power line carrier communication module 1, the networking module 3, and the user interaction module 4 respectively, and the single-chip processing module 2 is provided with smart home function software. The terminal 5 performs analysis and processing on the interactive instructions to realize the function of smart home. The instructions can be home safety, electricity safety, electrical equipment monitoring, electricity information, electricity bill information, power outage notice, electricity tariff standard, Electricity service surveys, etc., are information instructions serving smart homes. The user interaction module 4 includes a display unit, an input control unit and a storage unit to provide users with an economical and practical human-computer interaction interface. The networking module 3 includes a Bluetooth communication module 25 and a G24 wireless communication module 28, and the G24 wireless communication module 28 is used to connect with smart home appliances or smart sockets or sensors, and intelligently monitor household electrical equipment to realize home monitoring 6 functions; the bluetooth communication module 25 is used to connect with a smart phone or a tablet computer, and realizes that the smart phone or a tablet computer is virtualized as an interactive device of the interactive terminal 5, improving the convenience and visual effect of interaction, and the smart phone or tablet computer The mobile phone or the tablet computer runs the smart home function software, and communicates with the interactive terminal 5 through the bluetooth communication interface. The interactive terminal 5 is set on the home network 7, uses the power line carrier communication module 1 to connect with the carrier collector 11 set on the community management network 9 through the power line 8, and performs power line carrier communication to realize the access of the smart home and make the interaction Terminal 5 becomes a smart home network node. The carrier wave collector 11 has the function of collecting electricity consumption data of smart meters. One carrier wave collector 11 can communicate with multiple interactive terminals 5 to provide real-time power consumption information for the corresponding interactive terminals 5. The carrier wave collector 11 passes through the power line It is connected to the carrier concentrator 12 installed in the cell management network 9 to perform power line carrier communication. The carrier concentrator 12 includes a GPRS communication module for communicating with the computer Internet network 10, and one carrier concentrator 12 can communicate with multiple carrier collectors 11. This constitutes a smart home network: the computer communicates with the carrier concentrator 12 through GPRS, the carrier concentrator 12 communicates with the carrier collector 11 through the power line, the carrier collector 11 communicates with the interactive terminal 5 through the power line 8, and the smart phone can communicate with the computer through GPRS. Internet network 10 communication. Users can interact with smart home functions in three ways: the interactive terminal 5, smart phones, and the Internet. As shown in Figure 2, the power line carrier communication module 1 in this specific example is designed using the MI200E chip 13. MI200E is a highly integrated and high-performance power line produced by Mia Micro Shanghai Co., Ltd. which is specially designed for low-voltage power lines. The carrier communication chip is a half-duplex modulation and demodulation chip that can work in code division multiple access (CDMA) mode. All physical indicators of MI200E chip 13 meet the standard requirements of EN50065-1 and IEC61000-3-8. The MI200E chip 13 realizes data exchange with the single-chip microcomputer processing module 2 through an SPI (Serial Peripheral Interface) interface 14.

As shown in Figure 3, the working principle of data exchange between MCU and MI200E: MI200E chip 13 has a plurality of 8-bit instruction registers, which are accessed through MI200E serial data input 19 signals, input data at the rising edge of MI200E serial clock 17, and the entire During operation, MI200E chip selection signal 16 must be set to low level. After MI200E chip selection signal 16 is set to low level, the input data will be sampled at the first rising edge of the clock. MI200E chip selection signal 16 is static, allowing reset 15 operate. During the read command cycle, data is shifted out through MI200E serial data output pin 18 on the falling edge of MI200E serial clock 17. All opcodes, byte addresses, and data are written into registers through the MI200E serial data input pin 19, and the serial data is latched at the rising edge of the clock. MI200E serial clock 17 controls the timing of data input and output on the serial bus. The opcode, address or data appearing on the MI200E serial data input 19 pin is latched on the rising edge of the clock, while the data on the MI200E serial data output 18 pin is changed on the falling edge of the clock. When the frame header is received correctly, the MI200E frame indication pin 20 outputs a low active level, triggering an interrupt of the microcontroller, and the microcontroller can read data. The sending and receiving of MI200E chip 13 adopts a differential method, through the built-in digital power amplifier and signal coupling circuit, the signal is received or sent on the power line 8, and the signal modulation adopts the complex quadrature modulation principle, which is applied to signal attenuation changes Extremely superior performance for intense powerline channels. The built-in zero-crossing detection function of the MI200E chip 13, combined with the peripheral circuit, can increase the signal transmission power, and the rectification circuit provides power for the carrier communication module to work.

As shown in Figure 4, the working principle of the bluetooth communication module, the bluetooth serial port data output 21 is connected with the single-chip serial output, the bluetooth serial port data input 22 is connected with the serial input of the single-chip microcomputer, and the bluetooth interrupt indication pin 23 is connected with the interrupt of the single-chip microcomputer, Bluetooth serial communication master-slave setting 24 pins, set low for slave mode, set high level 3.3V for master mode. The data input and output of the bluetooth communication module 25 are converted into the data input and output of the single-chip microcomputer like this, and the bluetooth communication module 25 is a full-duplex communication mode, and this module is mainly used for interactive terminal 5 and the smart phone or tablet computer that have bluetooth communication interface , for short-distance wireless data transmission.

As shown in Figure 5, the G24 wireless communication module works. The communication chip on this module is G24 produced by Motorola. Connect with the serial input of the single-chip microcomputer, the G24 wireless communication module 28 is a half-duplex communication mode, set as the main mode, the coordination of communication is completely controlled by the single-chip microcomputer, the single-chip microcomputer uses the data frame with the address code to send data or commands, and the slave station works normally When the default is in the data receiving state, all slave stations receive and compare the received address code with the local address code. If they are different, all the data will be discarded without any response; if the address code is the same, it proves that the data is for the local station. The station responds differently according to the transmitted data or commands, and sends the response data back. The slave station refers to household appliances and sensors equipped with the G24 wireless communication module 28 .

Claims (4)

1. An interactive terminal with power line carrier communication access, characterized in that it includes: power line carrier communication module (1), single-chip processing module (2), networking module (3), user interaction module (4), wherein: The power line carrier communication module (1) is designed using a power line carrier communication chip to modulate and demodulate carrier signals, and the power line carrier communication chip uses an MI200E chip (13); the single-chip processing module (2) is configured by The serial port communicates with the power line carrier communication module (1), the networking module (3), and the user interaction module (4); The networking module (3) includes a Bluetooth communication module (25) and a G24 wireless communication module (28); The user interaction module (4) includes a display unit, an input unit and a storage unit. the 2. The interactive terminal with power line carrier communication access according to claim 1, characterized in that: the power line carrier communication module (1) is connected to the power line (8), and uses the power line (8) to transmit data to realize intelligent The access to the home makes the interactive terminal (5) a smart home network node. the 3. The interactive terminal with power line carrier communication access according to claim 1, characterized in that: the Bluetooth communication module (25) of the networking module (3) is used to connect with a smart phone or a tablet computer to realize the The smart phone or tablet computer is virtually an interactive device of the interactive terminal (5); said smart phone or tablet computer uses a Bluetooth communication interface to communicate with the interactive terminal (5). the 4. The interactive terminal with power line carrier communication access according to claim 1, characterized in that: the G24 wireless communication module (28) of the networking module (3) is used for interactive connection with smart home appliances or smart sockets, Realize the home monitoring (6) function. the

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