Device and method for monitoring frequency and intensity of hand tremor

Abstract

The invention discloses a device and a method for monitoring frequency and intensity of hand tremor. The device comprises an accelerometer, a gyroscope, a Fourier transform component, a frequency judgment component, a power spectral density analysis component and an intensity calculation component; wherein the accelerometer and the gyroscope are used for collecting acceleration information and angular velocity information as hand tremor signals, and inputting the hand tremor signals into the Fourier transform component and the power spectral density analysis component; the Fourier component performs Fourier transform on the hand tremor signal and inputs the transformed signal into the frequency judgment component, and the frequency judgment component judges and outputs the frequency of the hand tremor signal; the power spectral density analysis assembly carries out power spectral density estimation on the hand tremor signal and inputs an estimated result to the intensity calculation assembly, and the intensity calculation assembly judges and outputs the intensity of the hand tremor signal. The acceleration and the angular velocity are comprehensively utilized to evaluate and judge the hand tremor signal, and the accuracy of monitoring the hand tremor signal is improved.

Description

technical field [0001] The invention belongs to the field of medical information monitoring, and in particular relates to a device and method for monitoring the frequency and intensity of hand tremor signals. Background technique [0002] Tremor is common in the limbs and head of the human body, and is one of the most common neurological diseases, such as essential tremor (ET), Parkinson's disease (PD) and so on. Limb tremor can be divided into the following two types from the mechanism of production, physiological tremor and pathological tremor. Physiological tremor is an inherent tremor of the human body. All people have this phenomenon in their limbs, but the strength is different. It occurs under the conditions of tension, excitement, and fatigue. When these reasons are eliminated, the tremor will also disappear, and the frequency of physiological tremor is mostly concentrated at 8-15Hz. Pathological tremor is the tremor caused by the pathological changes of the human b...

AI Technical Summary

Problems solved by technology

Although tremors are not life-threatening, they have brought inconvenience to many patients' lives, and severe cases may even cause patients to be unable to take care of themselves.

[0003] In early clinical practice, the evaluation of motor dysfunction symptoms in tremor patients mainly relied on rating scales, but the scale method was affected by the operating experience and subjective effects of scoring physicians, and relying on rating scales to evaluate motor function in tremor patients was not objective and accurate enough, and would It has an impact on the early diagnosis and staging of tremor patients; in recent years, patients have been equipped with wearable devices that use accelerometers to measure hand movements and then identify tremors. Physiological tremor or pathological tremor, and the measurement is easily affected by personal physiological characteristics, equipment and other noises, resulting in inaccurate measurement results, and even repeated measurements; in addition, some solutions require patients to draw and draw lines with handheld devices and other operations, and further use image technology to identify the tremor amplitude, this method is difficult to apply to clinical and daily monitoring, and the algorithm is complex and difficult to implement

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