Research On Intelligent Digital Control System Of Treadmill

To achieve intelligence, digitalization and friendly man-machine interface, based on the traditional treadmill, this paper introduces an intelligent, digital control system for treadmill based on embedded technology. The system can steadily control the speed, slope, running state and so on of a treadmill, it also has the such functions as button control, speech control, integrated touch control, human-computer interaction such as TV multimedia signal acquisition, processing, displaying, and even has intelligent perception, intelligent security protection, energy saving control, procedure-oriented mode of health, safety design and so on.Proposed control system consists of five modules, namely, human-computer interaction with the host computer control system, Lower computer microprocessor, sensor detection systems, motor drive system and the implementation of the system. Three-phase AC drive motor selection and the choice was analyzed and explained about program established to host motor sport treadmill model and the load characteristics under typical motion requires. Calorie calculation program using treadmill exercise energy consumption model published the American College of Sports Medicine.Lower computer microprocessor control system's design of each module includes the hardware design of the keyboard interrupt matrix, the hardware design used for the host computer communication module between, human perception of security control for ultrasonic distance detection system Detection hardware module design, perform system motors and power module selection and design, finally, interference on the system hardware design and software anti-jamming design with a concrete analysis shows that the interference effects to enhance the system.System software design content control based on VC ++6.0 MSCOMM technology serial PC Industrial Computer and VFD-M drive serial communication software design method to achieve the IPC on the parameters of the drive to pass, run and frequency Control, experimental results show that the software design method is reliable, simple and stable. FSM-based theory of the interface design flow design interactive interface, the interface change requires complex, multi-state changes form the relationship between the complex simple. Position control system under various modular program designed to ensure the openness of the software, readability, scalability and maintainability in order to continue to develop needs. Heart rate control algorithm design, machine control system can run the user's heart rate, age, condition automatically gives a scientific exercise program to achieve fitness intelligent guidance. Principles of design using an ultrasonic distance measurement function of human perception can be, accurate distance measurement and control treadmill speed start, anti-fall wrestling, track one treadmill speed and other security features.Finally some of the controller hardware debugging based on a number of different modules for the control of exercise test, exercise test, such as process control mode, security, human perception ranging experiments, heart rate measurement experiments, the experimental results satisfy the design requirements.