Rs-232 Serial Wireless Communication Control System Design, And Rotation Stimulate

The work of this paper is the part research of equipments which are used in medicament filtration to fight back the kinetosis. The paper gives the total research scheme of the equipments. It is emphasized on the study of radio-communication system of RS-232 COM port in PC machine and the study of radio-control system of rotate speed of rotary stimulator, which are the works of author.nRF24E1 radio dispatcher CMOS chip is selected as the core apparatus in the radio-communication system of RS-232 COM port, the work theory of which is explained in the paper. And the detailed design of software and hardware of the communication system are given. The communication system has carried out the radio data-traffic in short distance between PC machine and peripheral equipments, and makes the PC machine receive the rotary biologic signal and process the data.The single-phase asynchronism electromotor acting as executive component and nRF24El receiving the order of rotate speed, the radio-control of rotate speed of rotary stimulator carries out the frequency-conversion timing of the asynchronism electromotor. nRF24El serves as the radio transceiver and control the power switch apparatus of athwart apparatus which elect the IPM. The paper also shows the basic timing theory of SPWM of asynchronism electromotor at the constant volts/hertz ratio. On the basic, the sampling arithmetic of the average monopole symmetry rule is explained. According to the calculational results the systemic software program is designed. The systemic software creates the SPWM controlling wave.The hardware and the software are practically manufactured in the paper.The experimental results are testified.The results of debugging show that the software and hardware deeply agree with the request of the questions.In this paper, the research is sponsored by the Natural Science Foundation of China (50275125) and the Horizontal Subject (N3EK1017).