(1). Smart Dog AI Programming Education Dog The AI programming education dog is based on an open source modular programming system. Through highly integrated and modular software modules, each function code function of the robot dog is independently divided into modules. The input and output have been designed. Learners can select and form according to their own needs, and establish logical connections and data flows through connections. All functional functions and logic processing statements have been encapsulated into visible, learners do not have to learn complex code rules and commands, can reduce the programming threshold for primary and secondary school students, and is extremely friendly to children's entry learning. The robot dog is made of 3D printing as a whole, and the material meets the strength needs of the robot dog, which also makes it easy for learners to replace parts. For the improvement of the leg, the connecting rod is used in series with 3 degrees of freedom leg structure design, and the control movement of the leg is realized by connecting the 25kg high torque steering gear with the ball joint and pull rod. This innovative leg design makes the leg control more convenient and more efficient. (2). Wisdom dog AI companion dog The smart dog AI companion dog is composed of a mechanical arm, a smart voice interaction module, a light detection module, an ultrasonic module, and a touch sensor installed on the body. The touch sensor is used to detect the strength of a person touching the robot dog (making corresponding actions). At the same time, a new type of mechanical arm system is adopted. On the material, high-precision 3D printing materials are used to ensure its precise clamping ability and certain environmental friendly ability. On the chip control, stm32 main control board is adopted to ensure the superiority of its program processing ability. Structurally, this mechanical arm is composed of multiple parts. The following general steering gear is used as the support. The circular steering gear arm is embedded on the steering gear with the wire steering gear disc. The large arm is flexibly fixed to the bottom structure while coordinating with each other. The pitching, shaft steering gear and rolling steering gear are connected with the mechanical claws to transmit and control the movement. The top mechanical claws adopt a two-finger structure, which is a classic four-degree-of-freedom design. The design ensures the freedom of movement in all directions, and in the control and operation is relatively simple, strong stability, easy to accurately clip and delivery of goods. (3). Wisdom dog AI guide dog Smart dog AI the sensor on the guide dog, which consists of 2D laser radar (LIDAR), 3D camera and force sensor installed on the rope. The force sensor is used to detect the tension on the traction rope, and the camera is used to track the guided person and carry out light detection and ranging positioning. With a computer brain (Raspberry Pi) that stores map data, the robot dog can move around while avoiding collisions with objects and walking along predetermined routes. Blind before travel, just by voice to set the destination, the guide dog can plan the route, and navigation. The laser radar on board can realize all-terrain scanning, avoid collision with objects, and cooperate with the camera to realize predetermined route walking, helping the blind to travel. According to the set program, when turning in a limited space, the robot dog will slow down the guiding object, instead of constantly pulling and pulling, making the guiding object nervous. This enables the robot dog to more precisely control the path taken by the guide object. The team's 3D printed robot dog "shoes" not only improved the stability of the robot dog's movement, but also reduced the noise of the robot dog's operation, while reducing the overall cost of robot dog production. Smart dogs AI guide dogs can synchronize with the user's computer or smart phone, and use the navigation function of the global positioning system to automatically find the appointment party. The smart dog AI guide dog has the intelligent navigation function from point A to point B, which really helps the blind to live independently.