33 results about "Balance assessment" patented technology

The OculoKinetic Device is used to test an individual to evaluate brain function including, but not limited to, identifying the presence of a traumatic brain injury or central nervous system disease which manifests itself through abnormal ocular responses to stimuli by using the high-speed tracking of an individual's eye movements (monocular or binocular, and either conjugate or disconjugate in horizontal, vertical, or torsional directions or combinations thereof), pupil size and reactivity, eyelid position, and blink parameters, and optionally along with other ocular elements, i.e., eyeball pressure, temperature, blood flow, etc. The eye movement stimulus protocol uses a target that moves in any direction of a two- or three-dimensional plane and may use a color display or geometric shapes. In addition, the stimuli can be used in conjunction with cognitive testing, balance assessment, and other non-eye tests.

A human balance testing and training system may comprise: a mobile communication device comprising: (1) sensors; (2) a display unit; (3) an input unit; (4) an evaluation subsystem for evaluating balance capabilities of a human subject utilizing data collected when the human subject is performing one or more balance evaluation exercises, the data including data received from the sensors; (5) an expert subsystem for prescribing an exercise plan; and (6) a training subsystem for maintaining an exercise plan including one or more balance training exercises for the human subject; wherein the exercise plan is determined by at least one of a balance evaluation by the evaluation subsystem, performance data provided by the training subsystem, and input from a health professional; and wherein the sensors are configured to measure movement of the human subject during performance of one or more of an evaluation exercise and a training exercise.

A wind tunnel test balance assessment method based on acceleration signal approximate entropies mainly includes the steps that a model three-dimensional acceleration sensor, a framework three-dimensional acceleration sensor and a balance three-dimensional acceleration sensor are installed on the inner wall of the top end of an aircraft model, a framework model and a balance respectively; Fourier transformation is carried out on acceleration signals measured out by the three acceleration sensors in different directions, then a frequency spectrum signal is obtained, approximate entropy characteristic values of six frequency bands within 0-300 Hz are calculated out, the difference value between the approximate entropy characteristic values of the acceleration signals in the same direction of the model and the framework is calculated out, and the difference value between the approximate entropy characteristic values of the acceleration signals in the same direction of the model and the balance is calculated out; when the two difference values between the approximate entropy characteristic values in the different directions are within the specialized range, an assessment result determines that test data of the balance are credible, and when the two difference values are not within the specialized range, the assessment result determines that the test data of the balance are not credible. Consequently, model mechanical data measured out through the balance are accurate and reliable in a wind tunnel test, and more accurate and reliable test data are provided for aerospace aircrafts.

Apparatus for transcutaneous electrical nerve stimulation in a user is provided, the apparatus comprising: a housing; an application unit for providing mechanical coupling between the housing and theuser's body; a stimulation unit mounted to the housing for electrically stimulating at least one nerve with at least one stimulation pulse during a therapy session; and a determination unit mounted tothe housing and configured to perform at least one of: (i) determining an activity level of the user; (ii) determining a gait characteristic of the user; (iii) determining a balance function of the user; and (iv) determining apparatus placement position on the user.

A wind tunnel test balance assessment method based on strain signal energy mainly includes the steps that a model three-dimensional strain gauge, a framework three-dimensional strain gauge and a balance three-dimensional strain gauge are installed on the inner wall of the top end of an aircraft model, a model framework and a balance respectively; Fourier transformation is carried out on strain signals measured out by the three strain gauges in different directions, then a frequency spectrum signal is obtained, energy normalization characteristic values of six frequency bands within 0-300 Hz are calculated out, the difference value between the energy normalization characteristic values of the strain signals in the same direction of the model and the framework is calculated out, and the difference value between the energy normalization characteristic values of the strain signals in the same direction of the model and the balance is calculated out; when the two difference values between the energy normalization characteristic values in the different directions are within the specialized range, an assessment result determines that test data of the balance are credible, and when the two difference values are not within the specialized range, the assessment result determines that the test data of the balance are not credible. Consequently, model mechanical data measured out through the balance are accurate and reliable in a wind tunnel test, and more accurate and reliable test data are provided for aerospace aircrafts.

The invention discloses a lower limb rehabilitation device for weight loss walking training and balance assessment, which comprises a training platform, a walking training device set on the training platform for assisting patients in lower limb joint movement, and a walking training device set on the training platform for A weight-reducing support device for weight loss control and pelvic tilt control for patients who are performing lower limb joint movements, a posture conversion device installed on the top of the weight-reducing support device to assist patients in achieving sitting and standing posture conversion, and a weight-reducing support device The power output part of the device is used to cooperate with the patient to perform pelvic cooperative movement when the patient performs lower limb movement, and is used to feedback the movement data of the pelvis to facilitate the pelvic cooperative movement feedback device for balance evaluation. The invention assists the patient to obtain pelvic motion data while performing lower limb joint motion under the control of weight loss, which facilitates subsequent balance evaluation and autonomous adjustment of pelvic balance motion, and is beneficial to the synchronous improvement of the patient's walking ability and balance ability.

The invention provides a blade dynamic balance assessment method, device and system and relates to the technical field of fan assessment. The method comprises the steps that the distance parameter ofeach blade of a fan and a fan tower cylinder in the operation process of the fan is obtained; a section curve of one side, close to the tower cylinder, of each blade in the operation process of the fan is drawn according to the rotating speed of the fan and the distance parameter; based on the section curve, the angle parameter of each blade and the deformation amount of each blade in the operation process of the fan are calculated; and according to the angle parameter and the deformation amount, the dynamic balance assessment index in the operation process of the fan is calculated, and therefore the dynamic balance state of the blades of the fan can be assessed. According to the blade dynamic balance assessment method, device and system, in the assessment process, by means of the manner of measuring the distance parameter in a non-contact manner, manual intervention can be reduced effectively, thus the dynamic balance situation of the fan can be effectively assessed and monitored, thedynamic balance of the fan is controlled within the safety range, and safety and reliability of fan operation are ensured.

The invention discloses a multi-body position pressure balance evaluation system, which includes: a sensor array; a control unit, which collects multiple electrical signals from multiple pressure sensing points through a signal acquisition unit; and a processing unit, which collects multiple electrical signals according to multiple electrical signals After obtaining the pressure data, the processing unit preprocesses the pressure data and performs feature extraction, and performs feature selection on the balance evaluation data to obtain the evaluation data, and establishes a prediction model on this basis, and then obtains the limit value of the pressure evaluation according to the prediction model, The limit value is used for comparison with the collected pressure sensor array data of the patient, so as to obtain a quantitative evaluation result. The present invention can perform static balance assessment on multiple body positions such as sitting, standing, and lying down, and perform dynamic balance assessment on rehabilitation training exercises, etc., and provides quantified balance assessment results to realize automatic and efficient balance assessment. At the same time, based on daily life scenarios, interactive games for balance assessment scenarios are developed to enhance the enthusiasm of patients for rehabilitation training.

The present invention provides a human body balance evaluation method, comprising: collecting the pressure center of gravity data of the body to be measured; using a multi-scale entropy algorithm to process the pressure center of gravity data to obtain the area value under the multi-scale entropy curve, and the area value is used as the The complexity of the pressure center of gravity data is used to measure the balance of the object to be measured; the center of gravity track of the pressure center of gravity data is determined, and the area of ​​the graph formed by calculating the center of gravity track is calculated to obtain the area of ​​the pressure center of gravity track, which is used to measure The balance of the object to be measured; the balance of the object to be measured is measured by the ratio of the track area to the complexity. The balance of the human body or the measured object is determined by the ratio of the trajectory area to the complexity, and the balance is calculated according to the information contained in the change of the center of gravity of the human body, so that this method overcomes the shortcomings of the linear system algorithm and the nonlinear system algorithm. , can accurately assess the balance of the human body.