First, I introduce the background of the robot generated development of robot technology, it should be said that a a comprehensive result of joint scientific and technological developments, also at the same time, resulting in a science and technology a significant impact on the socio-economic development, its The development was attributed to the fact that in the Second World War, countries strengthened their economic input and strengthened their economic development.
On the other hand, it is also the inevitable result of the demand for the development of productive forces, and the inevitable result of the development of human beings. Then, with the development of human society, people are increasingly exploring the natural process and in the process of transforming nature. In understanding the natural process, realizing people's understanding and transformation of the unreachable world is also an objective need of people in the process of science and technology development.
So what is a robot? It is generally understood that a robot is a mechanical electronic device with some human-like functions, or an automation device. It is still a machine. It has three characteristics, one is a humanoid function, such as a job function, a sensing function. The walking function can also complete various actions. It also has a feature that can automatically work according to human programming. A remarkable feature here is that it can be programmed to change its work, movement, working objects, and work. Some of the requirements are artificial machines or mechanical electronics.
With the development of society and the country, while the economy is growing rapidly, the inevitable fires in various dangerous places occur frequently, which has caused many hidden dangers to social security. Therefore, timely remediation of modern fires has become an urgent problem that needs to be solved. As for the loss of one point, the firefighters and rescuers are already very fast, but it takes a long time, and there is still the possibility of life-threatening when entering the fire-fighting scene. Therefore, the concept of the fire-fighting robot was born. The stupid design is mainly for the fire-fighting robot. The production and research, the car with AT89S52 microcontroller as the control core, power circuit, motor drive, photoelectric sensor circuit, flame detection circuit, fire fan and other circuits. The power circuit provides the working power required by the system, the dedicated motor drives the chip to drive the motor to control the forward and backward movement of the car, and the steering, the photoelectric pair tube completes the tracking and obstacle avoidance, the photoresistor sensor detects the flame, and the fire extinguishing fan performs the fire extinguishing. The fire-fighting trolley designed and manufactured by this design has the function of simple fire extinguishing, and achieves the purpose of realizing fire extinguishing on site.
Through the design of the fire-fighting robot, we can understand the robot fire-fighting task, know the simple program algorithm, master the method of fire extinguishing by the robot to identify the white line, the robot detects the flame and the like. Through the production of fire-fighting robots, we can understand the construction of simple fire-fighting robots, the use of flame sensors, and know that robots are looking for fire sources to complete simple fire-fighting tasks. In addition, we can cultivate observation ability, hands-on ability, creativity, and develop good thinking habits. Improve the comprehensive use of knowledge through the comprehensive application of optics, computer science, mechanical principles and aesthetics. Through the competition mechanism, exercise our sense of competition and cooperation, and exercise the flexibility of students in competitions. The ultimate goal is to design a fast-fired robot that can effectively eliminate fires, reduce fire damage for people, and bring convenience to people's lives.
2. Research methods, research plans and feasibility
First, the hardware
Through the study of the rules of the game, the system structure of the design robot is shown in Figure 2.
1.1 Sensor section
The sensor detects environmental information and describes the relationship between the robot and the environment. For the rules of the game, the robot mainly uses infrared sensors, gray sensors and corresponding signal processing circuits. The robot fire extinguishing device is a fan that automatically turns on the fan when the robot approaches the fire source, blowing out the flame. Use the LCD as an output display. There are two types of infrared sensors, one for detecting obstacles and avoiding hitting the wall while looking for a door to the room. The infrared sensor can detect obstacles larger than 0.03 square meters in the range of 10 cm to 80 cm in the front and 90 degrees.
The infrared sensor consists of two infrared transmitting tubes and one infrared receiving tube. The infrared emission tube emits infrared rays, and the infrared rays are reflected back after encountering an obstacle, and the infrared receiving tube receives the reflected infrared rays, and then sends them to the single chip through A/D conversion for processing. In addition, an infrared sensor is used to detect the source of the fire. The flame infrared sensor can detect infrared light with a wavelength in the range of 700 nm to 1000 nm, and is suitable for detecting a fire source or a heat source with a detection angle of 60°.
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