TWI577334B - Scale with stress measurement function - Google Patents

Description

Weight scale with pressure measurement function

The present invention relates to a weight scale which can simultaneously measure the weight of a user and an electrocardiogram signal. In particular, the weight scale of the present invention can further analyze the user's electrocardiogram signal and measure the pressure index of the user.

In recent years, the concept of health care and home health monitoring has been increasing. From the early basic pointer weight scale, mercury sphygmomanometer, mercury thermometer, gradually evolved to electronic scales, electronic sphygmomanometers, electronic thermometers and so on. However, single-function product design has gradually become inconsistent with today's consumer demand, so for example, the development of multi-functionality that can simultaneously measure body weight, body fat percentage, basal metabolic rate, BMI, and even skeletal muscle rate, and body age. Weight scales, these all-in-one products, because of the trouble of purchasing a variety of health monitoring instruments, are very popular among consumers and become the mainstream of today's market.

Electrocardiogram is one of the most commonly used tests in the clinic. It can record the electrical activity of the normal heart of the human body, thus helping to diagnose arrhythmia, myocardial ischemia, myocardial infarction, determine the location of myocardial infarction, and even diagnose heart enlargement, hypertrophy, or judge drugs or The effect of electrolytes on the heart, etc. In the past, ECG lead setting and judgment was very professional knowledge, and most doctors judge ECG results and provide relevant recommendations. But cited by poor living habits The premature aging of blood vessels, coupled with the increasing number of elderly people, cardiovascular disease has become a major threat to the health of Chinese people, awakening the public's attention to cardiovascular health, if regular monitoring can prevent the prevention of cardiovascular disease will be very helpful . For the above reasons, manufacturers have developed home-based electrocardiographs and actively improved them, which not only makes the electrocardiograph light and thin, but also makes it simple and convenient for daily use. It is expected to become a must-have for the home. ECG monitoring and recording products.

An object of the present invention is to provide a weight measuring device with a pressure measuring function, which can simultaneously measure the user's weight and electrocardiogram signal, and can further analyze the user's electrocardiogram signal to measure the user's pressure index.

Specifically, the weight gauge of the present invention includes a housing having an accommodating space therein, and a window having a window communicating with the accommodating space and two conductive electrodes; a processing unit, which is disposed in the accommodating space of the housing, the processing unit includes a weight processing unit and an electrocardiographic processing unit, the electrocardiographic processing unit is electrically connected to the conductive electrode; and a display unit The window is disposed in the accommodating space of the casing and corresponding to the top of the casing, and the display unit is electrically connected to the processing unit to receive the signal of the processing unit and display the signal.

The weight processing unit described above is for measuring the weight of the user, and includes a load cell, an amplifier, and an analog-to-digital converter. In the present invention, the weight processing unit transmits the weight of the user through the load. The heavy component is converted into a voltage signal, and after passing through the amplifier, the voltage signal is converted into a digital signal by the analog digital converter and displayed by the display unit.

The weight processing unit further includes a central processing unit that receives the digital signal and performs processing to obtain relevant information and displays the information on the display unit. In addition to the weight of the user, the above-mentioned "related information" can also be calculated based on the weight of the user and other information such as height, age, etc., such as basal metabolic rate, BMI value, etc. However, the invention is not limited thereto.

The weight processing unit can also be electrically connected to the conductive electrode of the top of the housing, and the body fat can be measured by a conventional principle. Examples of the above-mentioned conventional principles include, but are not limited to, using the principle of different conductivity of fat and moisture, measuring the body resistance, and calculating the factors such as sex, height, weight, age, etc. of the user, and estimating the fat in the body. Percentage.

In addition to the weight processing unit, the processing unit of the weight measuring device with pressure measuring function of the present invention also includes an electrocardiographic processing unit. The ECG processing unit is configured to receive and analyze information related to the user's heartbeat. The ECG processing unit includes, for example, an electrocardiograph amplifier, an analog-to-digital converter, and a central processing unit. Specifically, for example, when the user stands on the weight scale of the present invention with the pressure measurement function, the two feet are stepped on the conductive electrode on the top of the housing, so that the user's heartbeat can be known via the conductive electrode. Message related ECG signal. Since the ECG signal received from the conductive electrode and the user's feet contains a very small amplitude ECG signal and a large amount of noise, the user's ECG signal can be further The electrocardiographic signal is transmitted to the electrocardiographic amplifier via the conductive electrode to amplify the electrocardiographic signal, and the electrocardiographic signal is converted into a digital signal by the analog digital converter, and then analyzed by the central processing unit and displayed through the display unit. Therefore, the user can further understand information such as the electrical activity or the average heart rate of the heart through the display unit, but the present invention is not limited thereto.

In addition, a large amount of noise is generated during the measurement process, mainly due to factors such as poor contact between the user's feet and the conductive electrodes, body sway, and environmental interference. Therefore, in order to filter out the noise to make the waveform clear, in the ECG processing unit, a filter may be further included to perform high-pass and low-pass signal filtering to improve the signal.

Stress not only affects mental state and mood, but also affects the human nerves and endocrine system. Therefore, when the pressure exceeds the individual's ability to respond to the range, it is easy to suffer from physical and mental diseases, such as diseases associated with the autonomic nervous system. In addition to the beating caused by its own rhythmic discharge, the heart is also regulated by the autonomic nervous system (ANS). It is clear from the above description that when the pressure affects the autonomic nervous system, the regulation of the heart by the autonomic nervous system is bound to be affected.

Many studies have confirmed that the degree of stress can be quantified by changes in heart rate variability (HRV). The so-called "heart rate variability" is a method of measuring the degree of change of continuous heart rate. The calculation method is mainly to analyze the time series of heartbeat and heartbeat interval obtained by electrocardiogram or pulse measurement. Therefore, in the present invention, the weight scale of the present invention can further utilize the user's electrocardiogram, and the ECG signal is analyzed and processed by the central processor to obtain the pressure index of the user.

Heart rate variability analysis is most commonly used to capture R waves in an electrocardiogram and to become a sequence of sequences by calculating the time interval between RRs. Therefore, in a preferred embodiment of the present invention, the central processor can be used to capture the changes of the R wave and the R wave of the electrocardiogram, and then perform computational analysis to accurately calculate the condition and pressure index of the human autonomic nerve, and display On the display unit.

Specifically, the pressure index is calculated by the following Equation 1.

In Equation 1, Mean RR represents the average time interval between the R wave and the R wave in the extracted ECG; N represents the total number of RR intervals; and RRi represents the i-th RR interval, and i is one greater than or equal to 2 The integer.

1‧‧‧shell

2‧‧‧Window

3, 4‧‧‧ conductive electrodes

100‧‧‧weight scale

11‧‧‧Body processing unit

111‧‧‧Load components

112‧‧‧Amplifier

113‧‧‧ analog digital converter

12‧‧‧EC treatment unit

121‧‧‧ECG amplifier

122‧‧‧ analog digital converter

123‧‧‧Central Processing Unit

13‧‧‧Display unit

1 is a weight scale with a pressure measurement function in accordance with a preferred embodiment of the present invention.

2 is a flow chart of the pressure index of the user of the present invention.

Hereinafter, the weight scale with the pressure measurement function of the present invention will be described in detail.

1 is a weight scale with a pressure measurement function in accordance with a preferred embodiment of the present invention.

1 is a weight measuring function of a weight scale 100 comprising a housing 1 having a window 2 and two conductive electrodes 3, 4 on top of the housing 1.

The weight measuring device 100 includes a processing unit that is disposed in the accommodating space enclosed by the housing 1 and includes a weight processing unit 11 and an electrocardiographic processing unit 12, wherein the weight The processing unit 11 and/or the electrocardiographic processing unit 12 are electrically connected to the conductive electrodes 3 and 4, respectively, and a display unit 13 is disposed in the accommodating space, and the display unit 13 and the weight processing unit 11 and the electrocardiographic processing unit are provided. 12 is electrically connected and arranged corresponding to the window 2 to receive signals from the weight processing unit 11 and the electrocardiographic processing unit 12 and display them.

When the user stands on the weight, the load element 111 in the weight processing unit 11 converts the weight of the user into a voltage signal, and amplifies the voltage signal through the amplifier 112, and the analog signal is used by the analog converter 113. After being converted into a digital signal, it is displayed on the display unit 13.

At the same time, the conductive electrodes 3, 4 receive the electrocardiogram signal from the user's feet, and transmit the ECG signal to the electrocardiograph amplifier 121, and then convert it into a digital signal by the analog digital converter 122, and then The central processing unit 123 analyzes and processes, extracts the changes of the R wave and the R wave of the electrocardiogram, and performs calculation and analysis to accurately calculate the condition and pressure index of the human autonomic nerve and display it on the display unit 13.

It will be apparent from the above description that the present invention provides a weight scale that simultaneously measures the user's weight and electrocardiogram signal. Therefore, users can obtain weight and ECG information in a convenient and simple way. The invention can further analyze the user's electrocardiogram signal and measure the user's pressure index.

2 is a flow chart of measuring the pressure index of the user of the present invention, which uses the ECG signal of the user to analyze and process the ECG signal by the central processing unit 123 to obtain the user by heart rate variability (HRV) analysis. Pressure index. The measured ECG signal detects the position of the R wave and calculates the pressure index according to Equation 1:

In Equation 1, Mean RR represents the average time interval between the R wave and the R wave in the extracted electrocardiogram; N represents the total number of RR intervals, which is an integer greater than or equal to 2; and RRi represents the ith RR area And i is an integer greater than or equal to 2.

That is, the RR section calculation and the SDNN calculation are performed by Equation 1, and the obtained numerical values are further converted into a pressure index with reference to Table 1 below.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments. Those of ordinary skill in the art will appreciate that, for example, other components or equations suitable for use as a central processing unit may be further utilized in the central processing unit. For example, the user can further input information such as age, gender, height, etc., and further obtain information such as basal metabolic rate, BMI value, etc. by central processing unit operation.

1‧‧‧shell

2‧‧‧Window

3, 4‧‧‧ conductive electrodes

100‧‧‧weight scale

11‧‧‧Body processing unit

111‧‧‧Load components

112‧‧‧Amplifier

113‧‧‧ analog digital converter

12‧‧‧EC treatment unit

121‧‧‧ECG amplifier

122‧‧‧ analog digital converter

123‧‧‧Central Processing Unit

13‧‧‧Display unit

Claims (11)

A weight scale with a pressure measuring function, comprising: a casing having an accommodating space therein, and a window has a window connected to the accommodating space and two conductive electrodes; and a processing unit The processing unit includes a weight processing unit and an electrocardiographic processing unit electrically connected to the conductive electrodes; and a display unit is disposed on the accommodating space of the housing The window of the housing and the window of the top of the housing, and the display unit is electrically connected to the processing unit to receive and display the signal of the processing unit, wherein the display unit is The displayed information includes a pressure index calculated from the ECG processing unit. A weight scale having a pressure measurement function as described in claim 1, wherein the pressure index of 81 or more represents relaxation, 61 to 80 represents calm, 41 to 60 represents anxiety, and 40 or less represents pressure. A weight scale having a pressure measurement function according to claim 1, wherein the weight processing unit comprises a load cell, an amplifier, and an analog-to-digital converter. A weight scale having a pressure measurement function according to claim 3, wherein the weight processing unit converts the weight of the user into a voltage signal through the load component, and transmits the analog digital number through the amplifier. The converter converts the voltage signal into a digital signal and displays it in the display unit. A weight scale having a pressure measurement function according to claim 1, wherein the weight processing unit is electrically connected to the conductive electrodes. A weight scale having a pressure measurement function according to claim 1, wherein the ECG processing unit comprises an electrocardiograph amplifier, an analog-to-digital converter, and a central processing unit. A weight scale having a pressure measurement function according to claim 6, wherein one of the user's electrocardiogram signals is transmitted from the conductive electrodes to the electrocardiograph amplifier, and the electrocardiogram signal is converted into the electrocardiogram signal by the analog digital converter. After the digital signal is processed by the central processing unit and displayed by the display unit. A weight scale with a pressure measurement function as described in claim 6 wherein the electrocardiographic processing unit further comprises a filter. A weight scale having a pressure measurement function as described in claim 7 wherein the electrocardiogram signal is an R wave. A weight scale with a pressure measurement function as described in claim 6 wherein the electrocardiogram signal is analyzed by the central processing unit to obtain the pressure index. A weight scale having a pressure measurement function as described in claim 10, wherein the pressure index is calculated by the following Equation 1: Mean RR represents the average time interval between the R wave and the R wave in the extracted ECG; N represents the total number of RR intervals, which is an integer greater than or equal to 2; and RRi represents the i-th RR interval. And i is an integer greater than or equal to 2.