Design and development of sweeping robot circuit board

At the beginning of the design of intelligent robots, it focused on cleaning the home environment. With the progress and discovery of intelligent robot research and application, intelligent robots have broken through the bottleneck of focusing on household cleaning. They are oriented to high-end places and are used in many large-scale places have a wide range of applications. In fact, an intelligent robot is a product in the field of intelligent high-tech technology. With the help of ultrasonic bionic technology, it can also avoid obstacles well in a dark environment and realize automatic and powerful cleaning. Compared with ordinary cleaning machines, it has stronger cleaning power, more convenient, more effective automation, and more powerful functions.

1. Basic working principle of intelligent sweeping robot

1.1 The working principle of the control keyboard

Most of the control keyboards of intelligent cleaning robots are designed with six commonly used control keys. These control keys form a three-by-two structure and are connected by some parallel columns. When some of these control keys are not turned on, the resistors on the column lines will work to control the normal operation of the keyboard circuit, so that the keyboard will not work when it is in use. Only when the control keys on the keyboard are fully opened as required can the control function of the keyboard on the intelligent cleaning robot be brought into play.

1.2 Working principle of drive motor

The main power supply device for driving the motor is a DC motor. The DC motor has good linear speed regulation characteristics and excellent control dynamic characteristics, and can efficiently supply power to the intelligent cleaning robot. There is also a driving wheel device, which mainly refers to the left wheel and the right wheel arranged on both sides, and the driven wheel steering wheel at the front position. These driving wheels and driven wheels are the main parts of the operation of the drive motor. Through the operation of these driving wheels and driven wheels, intelligent control of the forward, backward and turning directions of the intelligent sweeping robot can be realized.

1.3 Working principle of dust collection device

The power supply of the dust collection device is also realized by a DC motor, which uses MOS tube voltage control software and MOS drive transistors. The drains of these applied software tubes and transistors are connected to the main circuit of the motor to control the power of the dust collection device. Carry out regulation, increase the cleaning power of the intelligent cleaning robot at the position that requires high-power cleaning, and replace the low-power cleaning at the position that does not require strong cleaning to achieve intelligent power cleaning.

2. Main system design of intelligent sweeping robot

2.1 Specific scheme design of the main control system

The scheme design of the main control system includes hardware design and software design. The software design is mainly to apply intelligent software algorithms, so that the intelligent sweeping robot can memorize the position of obstacles according to the algorithm in the system, avoid obstacles in time, and complete the cleaning work. The design of the hardware aspect mainly focuses on the design of interrupt sources, switch ports, control channels, program storage devices, etc. The main control system of the intelligent sweeping robot needs multiple necessary interrupt sources, using PWM control channels and serial The communication port is convenient for the limited upgrade of the internal storage of the intelligent sweeping robot. In the actual scheme design, the performance of the single-chip microcomputer of the main control system is also considered, and the single-chip microcomputer designed by the high-quality Freescale company at home and abroad is used to optimize the performance of the main control system in a wider range.

2.2 Specific scheme design of the drive system

For the scheme design of the drive system of the intelligent sweeping robot, brushless DC motors and permanent magnet brushless motors are mostly used at home and abroad to design the drive system of the intelligent sweeping robot. In the actual drive system design, appropriate circuit improvements are also made for the brushless DC motor, so that the brushless DC motor can use its own digital processor, microprocessor, etc. to better control the regulation circuit.

2.3 Scheme design of sensor system

Sensors are a relatively important part of the design of intelligent sweeping robots. Intelligent robots rely on sensors to perceive changes in the outside world, and judge and carry out the next step of the program based on changes. The scheme design of the sensor system includes the design and rational installation of infrared sensors, sensing and receiving sensors, ultrasonic sensors, etc. In the specific design scheme, most of the following points will be considered: one is the anti-interference ability of these sensors, the other is the stability of the sensor, and the third is the precision of the sensor.

2.4 Specific scheme design of some subsystems

Design of the remote control subsystem: The design of the remote control subsystem is mainly reflected in the design of the receiving chip of the intelligent sweeping robot. There are four infrared chips above the robot to receive the signals that need to be attracted. A unified coding format is also set on the infrared chip design side. These formats can not only make intelligent robots more automatic in the realization of functions, but also allow the format to better provide necessary support for the realization of custom functions, and also make intelligent cleaning robots more convenient in actual work Realize the necessary forward, turn, reverse, and flashback functions.

The scheme design of the keyboard display subsystem: the scheme design of the keyboard display mainly includes two parts: one is the function design of the keyboard, and the other is the design of the appearance precision of the keyboard. The keyboard function design of the intelligent cleaning robot mainly includes the following contents. One is that it can display the current time, date and other information in real time. clean up.

epilogue

Intelligent sweeping robot is one of the representatives of extensive research on robot development at present. Its specific working principle generally involves control keyboard, drive motor, dust collection device, etc., and its related system design includes the design of some subsystems, the main Control system scheme design, sensor and drive system scheme design, etc. In the actual research of intelligent sweeping robots, there are still some parts that need to be optimized and improved, so that intelligent sweeping robots can be more widely used.

The above is the working principle and system design method of the intelligent sweeping robot introduced to you by Shenzhen Zuchuang Microelectronics Co., Ltd. If you have solution development needs for sweeping robots, you can trust us. We represent a variety of single-chip microcomputers, voice chips, dual-mode Bluetooth ICs, and wifi chips. Brands include Songhan MCU, Yingguang MCU, Jerry Bluetooth, Ankai Bluetooth, Allwinner, and Realtek. Our technical services include: PCB design, MCU development, Bluetooth solution, software and hardware custom development, APP development, small program development, WeChat official account development, etc. It can also undertake the design of intelligent electronic products, the development of living appliances, the research and development of beauty equipment, the application of Internet of things platform, the smart home control system, the development of TWS earphones, Bluetooth earphone speakers, the development of children's educational toys, the design of electronic education products, etc.