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With the development of modern electronic technology, the intelligent robots are researched and developed in many areas. In this paper, the hardware circuit and system software are designed reasonably to achieve the robot carry water from origin to destination. The intelligent robot can carry water along the black guide lines (any shape) forward and backward. A MC9S12XS128 MCU is adopted as the main controller, which is developed by Freescale Semiconductor Company. The tracking, LCD display, water level detection, water storage, water transport and pumping are designed detailedly in the smart water transport system. Keywords-MC9S12XS128; automatically carrying water; motor drive; tracking; water level detection I. DESIGN CONTENT AND REQUIREMENTS This product is a fully automatic water transport trolley, to carry water from the point of origin to destination, load and unload water automatically. As is shown in Figure 1, the entire process of carrying water is done automatically without any human intervention. Figure 1. Carrying water smart car At first, a smart car stops in the initial segment. The car switch is opened to start the car. The car goes forward along the black line and stops at the end of the black line. The car gets water automatically until the water reaches the water lever in the container. Then the car gets back to the starting point along the same route and unloads water automatically. It goes full circle. II. DESIGN AND PROOF Figure 2. Component Diagram of the System Total block diagram is shown in Figure 2. When a start command is given, the smart car starts from Area C to Area A along the black guide lines. When it gets to Area A, the smart car emits the 38 KHz frequency infrared rays to the water tower. When the infrared receiver tube on water tower receives the infrared rays, the controller on water tower generates a low level to open the mini-pumps, which injects water into the container. After the car gets water from Zone A, it returns to the Area C along the same path to achieve the water transport. A. Display module Option 1: The original display device of LED digital tube is usually selected to obtain the information, which is simple and advantageous to operate. However, the amount of information displayed is too large and there are so many digital tubes in requirement and this way is out of date. So the option is given up. Option 2: The LCD display module mainly includes the start-up screen, temperature display, date and time display, as well as the quantity of water and water transport time display. This display technology is more advanced, easier to use and better to display. So good this program that it is normally used. B. The system control unit Option 1: The 51 MCU has a long history with high integration, processing capabilities, good reliability. It’s inexpensive and easy to use. However, in view of the weak, Proceedings of the 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013) Published by Atlantis Press, Paris, France.

THE CARRYING WATER DESIGN OF MOBILE ROBOT BASED ON MC9S12XS128