Table of Content
The user first enters the login interface of the smart home voice control system. In this interface, the user first needs to log in to the home gateway, and only under the home gateway can the home appliances be controlled. Those who have not registered need to register before they can log in. The user name and password registered by the user are saved in the sqlite database of the main control center. In order to ensure orderly and reliable communication between the main control center and each node, the address of the main control center and each node is unique.
The article looks into the current state of the art of dynamic routing protocols with respect to their possibilities to react to changes in the Quality of Service when selecting the best route towards a destination network. New options that could leverage information about the ever changing QoS parameters for data communication are analysed and a Cisco Performance Routing solution is described more in detail. The practical part of this work focuses on a design and implementation of a test bed that provides a scalable laboratory architecture to manipulate QoS parameters of different data communications flowing through it. The test bed is used in various use cases that were used to evaluate Cisco Performance Routing optimization capabilities in different scenarios. After actual tests in different environments, the system can work as designed.
ZIGBEE Based Voice Control System for Smart Home
If it is a control command, the main control center will send the command to the control node for processing; if it is a monitoring command, the main control center will process the stored video-play, close or forward. On the other hand, the main control center receives the response information fed back by the control node and feeds the response information back to the smart terminal. The main control center software design flow chart is shown in Figure 3. Compared with the vigorous development of foreign speech recognition technology, the domestic start is relatively late. In the 1980s, due to the popularization of computer technology in China, the conditions for research on voice technology were available, and many scientific research units began to study voice recognition technology . With the development of the “863” project, speech recognition has been listed as a special research topic and has developed rapidly.
The STM32 single-chip microcomputer PA8 provides the clock for the LD3320, SDCK receives the SPI clock signal of the single-chip microcomputer, and SCS connects the single-chip microcomputer PB5. The RSTB reset pin is connected to the PB12 pin of the microcontroller, and the INTB is connected to the PC1 pin as an interrupt output. With the development of smart home, speech recognition technology can provide a more convenient way for human–computer interaction, and meanwhile provides a better user experience. A voice control system for smart home based on single-chip computer module STC89C52 and speech recognition module LD3320 is designed in this paper.
Entry Level or Junior Power System Engineers
If the threshold is set too high, the effect of improving system security can be achieved, but it will cause a drop in the correct recognition rate. Therefore, the threshold setting should be determined based on actual measurement. The reason why the log likelihood result is negative is that the probability is a number less than 1. In order to reduce the error, we take the logarithm of the probability to a negative value, and then add it. In this way, it can be judged by the maximum log likelihood that it corresponds to that model, and then, it can be judged whether it is a family member by the threshold of the log likelihood of the model.
Results of the demonstration experiment show that the proposed power outlet module enables easy and flexible control of various home appliances with little infrastructure and helps to add more intelligence into the home environments rapidly. ZigBee based wireless home automation systems have been addressed and the performances of the ZigBee based systems have also been compared with those of other competing technologies based systems. This paper presents the design and development of a smart home system that allows control of home appliances using both Bluetooth and GSM technology, and the use of multiple control mediums gives more robustness to the system. A two-tier architecture of home control system based on ZigBee multi-hop mesh network is presented, and except the gateway, all of the router nodes in the system work on sleep mode at most of the time, which will improve the lifetime of the whole system efficiently. M. Chiu, “A smart home system with security and electrical appliances,” Journal of Information and Optimization Sciences, vol. The different member thresholds shown in Figure 4 are used in the experiment.
ZIGBEE BASED VOICE CONTROL SYSTEM FOR SMART HOME
The light, temperature, and humidity of natural conditions are used to simulate the changes of home environment parameters. The curtains, bedroom lights, and living room lights are replaced by mini curtains and lamp tubes, and two mini fans are used to simulate air conditioning cooling and heating command signals. The TV control signal is replaced by indicator lights, and the remaining indicator lights are used to show that it is convenient to add home facilities at any time. The communication between the host computer and the coordinator is completed through the serial port. The environmental information collection and the test of the control module in this article are carried out through the serial port debugging assistant on the PC.
In the communication protocol data packet, the source address, destination address, and control type all occupy 1 byte, and the control command occupies 2 bytes. Since the default address of the radio frequency module is 0x00, in order to ensure the reliability of the system, the source address and destination are not 0. In this system, the main control center address is 0x01, the infrared node address range is 0x01~0x8F, and the relay node address range is 0x90~0xFF. Therefore, the system can support up to 143 infrared nodes and 112 relay nodes, and each node can support up to control commands, which can meet the needs of most ordinary houses. The control types designed in this article include 6 types of air conditioners, TVs, set-top boxes, fans, projectors, and sockets. When the main control center sends data, the source address is set to 0x01, and the destination address is set to the destination node address.
The overall design of a wireless home automation system is detailed, fuelled by the need to provide supporting systems for the elderly and the disabled, especially those who live alone. In this project, HM2007 software recognizes the voice and it converts into binary format and transmits to the main control device by using zigbee transceiver, and Laplace software is used to process themain control device. This paper enlightens upon the invention as well as technological advancement in the field of voice recognition and also focuses upon different steps involved for speaker identification using MATLAB Programming. Wang, “A WiFi-based smart home fall detection system using recurrent neural network,” IEEE Transactions on Consumer Electronics, vol. Harsito, “Dual mode system of smart home based on internet of things,” Journal of Robotics and Control , vol.
It turns out to be easy and flexible to control the multiple household appliances for people, especially the elders and people with disabilities, such as quadriplegia patients. W. Lee, “Smart-textronics product development process by systematic participatory design method,” Journal of the Korea Convergence Society, vol. S. Shenbagavalli, T. Priyadharshini, S. Sowntharya, P. Manikandan, and D. S. Saravanan, “Design and implementation of smart traffic controlling system,” International Journal of Engineering Technology Research & Management, vol. Rahman, “Control system prototype smart home IoT based with MQTT method using Google Asisstant,” Jurnal RESTI , vol. A. I. Abdulla, A. S. Abdulraheem, A. A. Salih et al., “Internet of things and smart home security,” Technology Reports of Kansai University, vol.
It can be seen from the figure that the four states from S1 to S4 can jump over time or stay in this state. In this design, the charging module can work normally when the CE pin of the TP4056 chip in the charging module is connected to a high level. When the battery is fully charged, the two capacitors C9 and C10 achieve filtering and R7, R8, and R9 complete current limiting. The charging module design can be excellently adapted to this design and improve the portability and simplicity of the smart home system.
The system has been functionally tested, and the results show that the system can realize the functions of audio collection, family member confirmation, wireless control, voice command recognition, and environmental information collection and control system. How to meet people’s life requirements to a greater extent is the ultimate direction of smart home development. In order to continue to develop in this direction, research on embedded voice control systems for smart homes is necessary. In the context of the research on smart homes, this paper combines voice control, ZigBee technology, and the most popular operating system and, after considering the cost, proposes a set of feasible voice control system solutions. The intelligent terminal recognizes the voice signal as a specific voice command through the process of preprocessing, feature extraction, pattern matching, postprocessing, etc., and sends it to the main control center for analysis. The software structure of the system is based on the C/S (Client/Server) structure; that is, the intelligent terminal is the client, the main control center is the server, and the control node is the controller.
The client and the server communicate through the TCP protocol, and the server and the controller communicate wirelessly through the radio frequency protocol. The test results show that family members can correctly control the system and achieve the goal of correct control of home facilities through voice commands combined with family environment information. However, the star-shaped network topology currently adopted by the system is simple and easy to use, but when there are a large number of sensors, the system needs a large number of information collection nodes, which will greatly increase the system cost. At this time, the star structure is not as cost-effective as the tree and mesh structure. Therefore, at this point, the system needs to be improved, depending on the specific situation.
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