ABSTRACT
ObjectiveTo present a method for evaluating the gait symmetry of microprocessor-controlled prosthetic knee (MPK). MethodsA kind of proto-MPK, AiKneeOne, and a wearable gait collect system, were made. The phases of the first double-limb support, the single-limb support, the second double-limb support, and the swing were used to calculate symmetry index (SI), ratio Ⅰ (RI) and ratio II (RII). Five heathy persons walked on the treadmill wearing AiKneeOne at speeds of 0.5, 0.7, 1.1 m/s, and the indice were collected with the wearable gait collect system. ResultsUnder different velocities, The absolute value of SI and RII were very little and the RI were close to one at the phases of the first double-limb support and the second double-limb support, but they were not very satisfactory in the phases of the single-limb support and the swing. ConclusionThe developed MPK AiKneeOne is potential to reconstruct the gait of amputees, and the gait symmetry indice can be used to evaluate the wearing performance of MPK.
ABSTRACT
Objective To design a controller for the air environment of cabins of special vehicles .Methods The microprocessor was used to collect and store parameters ,and calculate automatically the operative mode of actuators ,such as the fan,air-conditioner,oxygenerator,air cleaner, filtering and boosting devices according to the preset target values .Output commands by RS485 were used to control actuators .Results and Conclusion The controller is capable of control integration for air-adjusting equipment while improving the control effect of the air quality in cabins of special vehicles .
ABSTRACT
Objective:Some medical liquid needs to be heated to the human body temperature, so the constant temperature case is a necessary equipment. But the common constant temperature case is often bulky, inconvenient application and the price is very high, so this paper is mainly to develop a convenient and cheap thermostat device for medical liquid heating.Methods:The system used single-chip microcomputer for temperature control. The temperature sensor collected and displayed the temperature of the box when the temperature was set up. Then the heating module started when the temperature was lower than the set point, and stopped heating when reaching to the set point.Results: The temperature control effect of constant temperature case tested by calibrated mercury thermometer, the temperature of constant temperature case was not significantly different from that of mercury thermometer.Conclusion: The portable constant temperature case for medical liquid have the characteristics of precise temperature control, high temperature resolution, and small temperature fluctuations. It can meet the clinical needs and be worth to popularizing in clinical applications.
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This paper introduces an infusion remote-control system based on wireless data-transfer.It can realize such functions as the accurate control of the infusion speed,humanized prompt,central monitoring,wardship and management.Ultrasonic adopted to detect the flux,the lower MCU can fulfill such functions as control,display and storage,which can also perform real-time wireless communication with the upper PC to facilitate remote control.
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In this paper, a novel portable low-frequency electronic pulse analgesia apparatus is introduced, which is based on a novel single-chip microprocessor, switching power supply without transformer and OTL power output amplifier. Through this apparatus, multi-group low-frequency electronic pulses can be produced to simulate the same effects as acupuncture. This apparatus has an observably curative effect for dysmenorrhea.
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Objective To introduce an equipment of low-pressure control which is based on PIC16F877 microprocessor. The design flow and implementation methods are described. Methods The speed of motor was controlled to reach the set pressure value by PWM and the control requirements were achieved through human-computer interface. Results The setting value was quickly reached. Conclusion This device has interactive control and meets the requirements.
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This paper introduces the application of P80C552, a microprocessor with ADC, to microwave curer. The principle and functions of the curer presented, the hardware and software designs of its intelligentized control system are described in detail. The designs, making the curer reliable and stable, prove practical.
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This paper introduces the structure, components, function and technical design of the multi -physiological information system, which can not only collect but also register and check parameters. The parameters acquired by the system include electrocardiogram, blood pressure, oxygen saturation and pulse.