31 results about "Heart rate fluctuation" patented technology

An X-ray computed tomography apparatus includes an X-ray source, a high voltage generating unit, an X-ray detector detecting X-rays transmitted through a subject to generate projection data, a storage unit storing the projection data in association with electrocardiographic data of the subject, a setting unit setting a specific cardiac phase in accordance with an operator's instruction, a reconstruction unit reconstructing a tomogram based on projection data sets acquired in specific periods centered on the specific cardiac phase throughout cardiac cycles, a period extending unit extending the specific period on the basis of a heart rate fluctuation range of the subject, and a control unit controlling the high voltage generating unit to generate a relatively high dose of X-rays in the extended specific period and generate a relatively low dose of X-rays in a period other than the extended specific period.

The invention discloses a reminding method of fatigue driving and a terminal device. The reminding method of fatigue driving comprises the steps of detecting whether a user is in a driving status, and a physical fatigue detecting function of the terminal device is started when the user is in the driving status; a physical heart rate value of the user is monitored by a heart rate sensor of the terminal device through the physical fatigue detecting function, and an existing heart rate fluctuation rule of the user is determined according to the detected physical heart rate value; and when the determined existing heart rate fluctuation rule matches with the preset heart rate fluctuation rule, the fatigue driving status of the user is determined and alert information for the fatigue driving status is output. With the embodiment of the reminding method of fatigue driving and the terminal device, the fatigue driving status of the user can be automatically determined through the terminal device and reminding is given in time.

The invention discloses a fatigue driving reminding method and device and a computer readable storage medium. The fatigue driving reminding method comprises the steps of monitoring a heart rate of a user by using a heart rate sensor on wearing equipment under a physical fatigue degree detection function of the wearing equipment; determining a heart rate fluctuation law of the user according to themonitored heart rate; determining the fatigue degree of the user according to the heart rate fluctuation law of the user; obtaining a running time and a running speed of a vehicle driven by the user;if the fatigue degree of the user is larger than a first fatigue degree threshold, the running time is larger than a first running time and the running speed is higher a first speed threshold, generating primary reminding information; transmitting the primary reminding information to a vehicle-mounted system; and displaying the primary reminding information to the user through the vehicle-mountedsystem. According to the fatigue driving reminding method and device and the computer readable storage medium, it can be seen that the accuracy of the fatigue driving reminding method is improved byjudging thresholds of the user fatigue degree, the running time and the running speed and generating and displaying the reminding information according to a judging result.

A physical fitness test method, before the physical fitness test, the heart rate fluctuation rule of the tested person is obtained, during the physical fitness test, the measured heart rate value before the test is obtained, and the fatigue degree k of the tested person is determined according to the pre-test heart rate value , the physical fitness test score of the tested personnel S=f(U, k), where U is the result of the physical fitness test equipment. Since the physical fitness test will have a direct impact on the performance of the physical fitness test when people are in a fatigued state, the test scores of the tested personnel are calculated by combining the fatigue of the tested personnel, thereby reducing the impact of human fatigue on the performance of the physical fitness test , improving the accuracy of physical fitness test results.

The present invention collects data on circadian intervals between two cardiac contractions (RR intervals) and, on the basis of the collected data on circadian RR intervals, provides a system for analysis of the human circadian heart rhythm autonomic nervous system balance, and analysis of heart rate (HR). The invention focuses on HR fluctuations that are divided into three groups: slow fluctuations of the circadian period, higher frequencies compared with circadian, and chaotic. The division into parts is executed by applying adequate empiric and mathematical methods to determine a series of envelope curves, closely and individually related to the principal circadian series, followed by their separation from the input HR series, and then applying HR variability (HRV) methods to increase accuracy of the analysis of HRV results and add new HR regulation criteria to the analysis outcomes.

The invention relates to the technical field of medical supplies, and discloses a limb care device after interventional cardiology, comprising a fixed block, a limit mechanism, an elastic connecting belt, a limit strap, a heart rate sensing component, and a control prompt component. A limiting mechanism is fixedly connected inside the fixing block, an elastic connecting belt is fixedly connected to the inner side of the fixing block, a limiting strap is fixed inside the elastic connecting belt, and a heart rate sensing component is fixedly connected inside the limiting strap. , a control prompt component is fixedly connected to the top of the fixing block. In the limb nursing device after interventional cardiology, after the resonance membrane is in contact with the patient's chest cavity, it senses the patient's heart beat and drives the air inside the induction groove to vibrate, thereby causing the vibrating sheet to vibrate, and the vibrating sheet drives the closed conductor between the first magnet and the second magnet. The magnetic field line is cut between the two magnets to generate current, and the induced current is generated through the vibration of the patient's chest cavity, which is used to detect the heart rate fluctuation of the patient with high accuracy.