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2. Scientific research significance: With the development of the times, people’s understanding of the quality of living tools and life Sierra Leone Sugar The environmental requirements around the home are gradually increasing, and people are beginning to pay more attention to the intelligence of furniture and the safety of the environment around the home. Based on the application of intelligent furniture real-time monitoring system. At the same time, a series of problems such as environmental pollution, fire alarms, and gas leaks are emerging one after another, which makes the development of smart homes have extremely broad application prospects. Research on the internal affairs: 1. Computer video surveillance design; 2. Wireless monitoring and positioning design; 3. PM2.5 detection; 4. Android phone control design; 5. Fire alarm, gas leakage detection and GSM alarm system; Practical basis: 1. Application of sensors in the Internet of Things; 2. Short-range wireless electronic signal positioning; 3. Vector space theory and robot kinematics; 4. Artificial intelligence and machine vision; Technical objectives: Robot size: 198mm*220mm*180mm (Length*Width*Height); Wireless communication frequency band: 2.4GHz; Parts power consumption: 8W (max, including motor power); Temperature measurement range: -40℃-80℃; Air pressure measurement range: 300-1100hPa (elevation -500 meters—Sierra Leone Sugar Daddy9000 meters); PM2.5 minimum particle detection value: 0.8 microns; 3. Innovation Innovation points : 1. Use wireless WIFI to complete computer recording Sierra Leoneans Sugardaddy monitoring system; 2. Able to communicate with people, and can Sierra Leone Sugar Daddy can assist in controlling household appliances according to voice commands; 3. Can be controlled by voice, mobile phone, or computer; 4 .Able to transmit images back in real time; 5. Equipped with temperature sensor, humidity sensor, air pressure sensor, geomagnetic field sensor and other sensors, it can obtain various data of the situation around the robot in real time; 6. Participate in automatic search and charging Station function, when the battery is almost exhausted, it can automatically find a charging station to replenish power. Key skills: 1. MicrocontrollerSoftware writing and hardware connection; Sierra Leone Sugar 2. Speech recognition and speech decomposition skills; 3. Wireless WIFI and remote control skills Application; 4. Android mobile APP driver program; 5. Machine vision and artificial intelligence system algorithm design; Comparison with similar research at home and abroad: 1. The robot can conduct simple language communication with people and can recognize some dialects; 2. Can be controlled by many platforms: voice control, mobile phone control, computer control; 3. Equipped with a variety of sensors to understand local temperature, humidity, and altitude at any timeSierra Leone Sugaretc. 4. Applicability Scope of application:
In the application of smart home, the control of household appliances can be completed based on the voice signalSierra Leoneans Escort control; after expanding the voice library, it can be used as a smart home teacher for children; it can penetrate into various dangerous areas, conduct independent investigations, and send back various information such as images in real time; it can realize some functions of the location-changing weather station; 5. It can realize Smart home visual control;
Promotion prospects: The robot industry has become a rapidly growing industry with huge market space and broad prospects. The emergence of robots has greatly improved the quality of childbirth and successfully liberated labor Sierra Leone Sugar resources. With the development of information technology, modern robots are also moving in the direction of becoming more intelligent, which has also prompted the development of robots with more functions and more human characteristicsSierra Leoneans Sugardaddy. Waiting forSierra Leoneans EscortOne day, robots in science fiction movies canSierra Leoneans Escortenters people’s lives and serves humanity better.
1.1 Mission Background
The robot industry has become a rapidly growing industry with a huge market space and broad prospects.The emergence of robots has greatly improved the quality of childbirth and successfully liberated labor resources. With the development of information technology, modern robots are also moving in the direction of becoming more intelligent, which has also prompted the development of robots with more functions and more human characteristics. We look forward to the day when robots from science fiction movies can enter our lives and serve the people better.
1.2 Responsibility requirements
The project aims to build a robot that can cope with complex surrounding conditions. It can be used both at home and for outdoor environment monitoring; it can communicate with people in simple conversations, and it can It can realize assisted control of household appliances according to voice commands; it can transmit images back in real time to facilitate observation and operation; it is equipped with a variety of sensors that can obtain the temperature, humidity, air pressure and even the location of the environment around the robot in real time. Magnetic field data, etc. It has the function of automatically searching for charging stations. When the battery is almost exhausted, it can automatically search for charging stations and replenish electric energy.
2.1 Main control chip selection
Plan 1: Use the 51 series microcontroller. Although the programming of the 51 series microcontroller is relatively simple, compared with similar products, its main frequency is low and its RAM and ROM are small. , there are too few internal and external devices on the chip, and more hardware peripherals need to be added.
Plan 2: Use STM32F103 microcontroller, which is based on the M3 core and has 512 KB Flash, 128 KB SRAM, and a maximum of 8 clocksSierra Leoneans Sugardaddy; powerful performance and rich peripherals make it Sierra Leone Sugar able to undertake large-scale projects Target opening.
Based on the above two plans, choose plan two.
2.2 Selection of remote control platform
Plan 1: Choose 24l01 wireless 2.4GHz module for wireless communication. This plan has the advantages of less resources, fast transmission rate, and long transmission distance, but this plan cannot Complete mobile phone control and computer control.
Plan 2: Select the Bluetooth module for wireless communication.
In order to improve the maneuverability of the robot SL Escorts and realize multi-platform remote control, the manufacturer equipped the robot with Bluetooth Communication module, and produced a Bluetooth remote control, Android APP, and PC host computer for it. So choose Plan 2 Bluetooth communication module.
2.3 Selection of display module
Plan 1: Digital tube display. The digital display is clearer and more suitable than LCD for working under strong light during the day. However, the digital display has a single display and consumes a lot of power.
Plan 2: LCD1602. LCD1602 is an industrial character-type liquid crystal specially used to display characters, numbers, and symbols. The cost is low and the operation is simple. Because it is a reflective displaySL Escorts, in the outside worldSierra Leoneans EscortUnder strong light conditions, it is difficult for the human eye to discern the inner affairs of the display.
Plan 3: OLED12864 display. OLED has the characteristics of SL Escorts such as self-conscious light, high contrast, wide viewing angle, wide application temperature range and low power consumption. It still displays clearly under strong light conditions.
The above figure distinguish the digital tube, 1602 and OLED12864
Based on the above three plans, choose the plan three.
2.4 RecordSierra Leone Sugar Daddy Selection of image transmission plan
Plan 1: Apply digital camera and use microcontroller to collect The image is then sent to the designated device through the Sierra Leone Sugar wireless module. Images are data with a large amount of data. If collected by a microcontroller, Sierra Leoneans Escort will occupy a large amount of microcontroller resources and reduce operating efficiency. .
Plan 2: Apply AV camera and video transmission module. This is a mature video image transmission technology with the advantages of low cost, low power consumption, long transmission distance, and clear images.
Based on the above two plans, adopt plan two.
2.5 Choice of Voice Recognition Plan
Plan 1: Use a recording chip to record each audio segment in advance, and after receiving the voice electronic signal, compare and call them one by one according to their frequency characteristics.
Plan 2: Use LD3320 voice chip, LD3320 long and short specific voice recognition chip, does not require users to record. Just practice and apply. Support SPI interface, with the characteristics of easy use, stable operation and high recognition rate.
Based on the above two plans, choose plan two.
2.6 Selection of the main structure of the robot
Plan 1: Use 4WD chassis, single motor drive, and steering with steering gear. The cost of this design is low, but it cannot cope with rough terrain and cannot perform actions such as turning in place.
Plan 2: Using a crawler chassis and a two-wheel differential turning method, it can handle some complex terrain and turn on the spot.
Based on the above two plans, choose Plan 2 Sierra Leoneans Sugardaddy.
3.1 Microcontroller core board minimum system
This work uses STM32F103 microcontroller as the main control chip. STM32F103 microcontroller is a 32-bit microcontroller with ARM Cortex-M3 core. When designing the minimum system, an additional crystal oscillator circuit and complex Sierra Leone Sugar Daddy circuit, you also need to consider the connection of its pins and the reasonable allocation of peripherals. The minimum system schematic diagram of its core board is shown in Figure 1.
Figure 1 Minimum system board schematic
3.2 Camera and image transmission module
This part of the circuit application moduleSL Escorts Processing plan, the camera adopts a security micro AV camera, and the image transmission module Sierra Leone Sugar Daddy adopts a security wireless image transmission module , which greatly simplifies the circuit design. The principle diagram is shown in Figure 2.
Figure 2 Schematic diagram of the video module
3.3 Motor drive circuit
This work uses the BTS7960 chip to drive the motor. This chip is a high-current half-bridge high-integration chip used for motor drive. It needs to drive two If the motor rotates forward and reverse, 4 chips need to be used to form a two-way full bridge. The principle diagram is shown in Figure 3.
Figure 3 Schematic diagram of motor drive module
3.4 Display circuit
The OLED12864 display used in this work uses the SPI communication protocol and only requires 4 I/Os to drive. The principle diagram is shown in Figure 4.
Figure 4 showsShow module schematic diagram
3.5 Speech recognition module circuit
This work uses LD3320 speech recognition chip, in the circuit desSL Escortsign Full consideration needs to be given to the stability of the power supply and the filtering of noise during recording, so a lot of capacitors were added to the design. The principle diagram is shown in Figure 5.
Figure 5 Speech recognition module schematic diagram
3.6 Sensor part circuit
The temperature and humidity sensors, air pressure sensors, geomagnetic field sensors, red sensors, etc. used in this work all adopt modular design. The medium temperature and humidity sensor applies the 1-wirSL Escortse protocol, the air pressure sensor and the geomagnetic field sensor apply the IIC protocol, and the red sensor uses the NEC protocol. . The principle diagram is shown in Figure 6. Sierra Leone Sugar Daddy
Figure 6 SensingSierra Leoneans Sugardaddy Server Module Principle
4.1 Software Ideas
The robot program is equipped with a micro-operating system, which can conduct unified management of various complex tasks and achieve reasonable allocation of resources. . After booting and initializing the hardware Sierra Leoneans Escort, the program enters the comprehensive management platform, which includes facility management, voice management, communication Management, control interface management, sensor coordination and sleep strategies.
4.2 French block diagram
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