KR20030049272A - a portable body-fat measurer and control method there of - Google Patents

Abstract

PURPOSE: A portable body fat measuring device and a control method thereof are provided to achieve improved use convenience and allow for ease of health management. CONSTITUTION: A portable body fat measuring device comprises an input protection unit(10) for protecting the signals input from the electrodes attached to fingers of a user; a differential amplifier unit(20) for amplifying the signals of the input protection unit; an absolute value calculating unit(30) for calculating absolute values of the signals of the differential amplifier unit; a low pass filter(40) for permitting the signals output from the absolute value calculating unit to pass through a low band; a key input unit(50) for inputting user's commands; an A/D reference value providing unit(60) for providing an A/D conversion reference value; a low voltage check unit(70) for checking a low voltage state; a micro processor(80) for transmitting a preset value and body fat ratio when a communication start key is input, performing processes in accordance with the switch input from the key input unit when the communication start key is not input, and setting the current time and alarm time when a time set key is input; a current source drive unit(90) for measuring bio-impedance; a buzzer(100); an LCD display unit(110) for displaying the operating state; a transmission drive unit(120) for PC communication; a battery(130) for supplying power; a power control unit(140) for controlling power in case of low voltage; and a converter for supplying power.

Description

Portable body-fat measurer and control method there of}

The present invention relates to a portable body fat analyzer and a control method thereof, and more specifically, to measure the body's electrical resistance (bioimpedance) from the finger and then calculate the body fat percentage to calculate the body fat percentage. The present invention relates to a portable body fat analyzer and a control method thereof, which can improve the convenience of use by allowing the body fat percentage to be viewed and help the individual's health care.

Fats are nonvolatile carbohydrates found in animals and plants that combine glycerin and fatty acids.

Body fat in the human body is mainly stored in the fatty tissue between the subcutaneous connective tissue, intraperitoneal, muscle tissue and used as an energy source. However, when the above body fat becomes excessive, it becomes obese, rather it causes various adult diseases, and thus requires proper maintenance of body fat.

In general, to determine whether obesity is not difficult to determine the thickness of the subcutaneous fat by hand, but to determine whether obesity is more accurate to determine the body fat rate using a body fat analyzer in a professional institution. The above body fat percentage is an indicator for knowing what percentage of the body fat is, and more than 30% body fat percentage is definitely classified as obesity.

However, since the conventional body fat analyzer adopts a method of attaching an electrode to a body, it is very inconvenient to use it if there is no professional knowledge in use.

The purpose of the present invention is to solve such a conventional problem, by measuring and analyzing the electrical resistance (bioimpedance) of the body from the finger to calculate the body fat percentage, so that anyone without their own professional knowledge can use their own body fat rate conveniently. The present invention provides a portable body fat analyzer and a control method thereof, which can enhance the convenience of use and help the individual's health care.

1 is a block diagram of a portable body fat analyzer according to an embodiment of the present invention.

2 is a detailed circuit diagram illustrating an input protection unit, a differential amplifier, and a current source driver of a portable body fat analyzer according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a method of controlling a portable body fat analyzer according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: input protection part 20: differential amplifier

30: absolute value part 40: low pass filter part

50: key input unit 60: A / D reference unit

70: low voltage check unit 80: microprocessor

90: current source driver 100: buzzer

110: display unit 120: transmission driver

130: battery 140: power control unit

As a means for achieving the above object, the arrangement of the apparatus of the present invention comprises: input protection means for protecting a signal input from an electrode attached to a finger, differential amplification means for amplifying the signal of the input protection means; An absolute value for calculating the absolute value of the differential amplification means output signal, a low pass filter for passing the low band of the absolute value output signal, key input means for inputting a user command, and A / D A / D reference value unit for providing the conversion reference value, low voltage check means for checking the low voltage state, set values, body fat percentage, body fat amount, etc., stored when the communication start key is input while the measurement mode is set If the communication start key is not input and the communication start key is not input, the processing is performed according to various switch inputs from the key input unit, and the measurement mode is set. Control means for setting the current time, alarm time, etc., when the time setting key is not input, current source driving means for measuring the bioimpedance, buzzer for generating sound, and for displaying the operation state. And display means, transmission drive means for PC communication, a battery for providing power, and power adjustment means for adjusting a power supply.

As a means for achieving the above object, the configuration of the method of the present invention comprises the steps of: transmitting a set value, body fat percentage, body fat amount and the like stored when a communication start key is input from a key input unit while the measurement mode is set; Determining whether there are various switch inputs from the key input unit when the communication start key is not input, and setting the height, weight, age, sex, storage address, etc. of the subject to be measured when the setting switch is input. Increasing and changing the set value when there is an input of the increasing switch, decreasing and changing the set value when there is an input of the reducing switch, and biometric impedance if there is an input of the measuring switch. To measure and store the body fat percentage and body fat mass, and to set the time when the measurement mode is not set. It is accomplished by, if the input includes the step of setting the current time, alarm time, and so on.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings in order to describe in detail enough to enable those skilled in the art to easily carry out the present invention. . Other objects, features, and operational advantages, including the object, operation, and effect of the present invention will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only to these embodiments. In addition, various changes, additions and changes are possible within the scope without departing from the spirit of the present invention, as well as other equivalent embodiments.

As shown in FIG. 1, the portable body fat analyzer according to the embodiment of the present invention includes an input protection unit 10 for protecting a signal input from an electrode attached to a finger, and the input protection unit ( The differential amplifier 20 for amplifying the signal of 10), the absolute value unit 30 for calculating the absolute value of the signal of the differential amplifier 20 described above, and the low value of the signal of the absolute value unit 30 described above. Inspecting the low-pass filter 40 for passing the band, the key input unit 50 for inputting a user's command, the A / D reference unit 60 for providing the A / D conversion reference value, and the low voltage state The low voltage check unit 70 and the set value, the body fat percentage, the body fat amount, and the like, which are stored when the communication start key is input while the measurement mode is set, and when the communication start key is not inputted, from the key input unit. According to various switch inputs Microprocessor 80 for setting the current time, alarm time, etc., when the time setting key is input while the measurement mode is not set, the current source driver 90 for measuring the bioimpedance, Buzzer 100 for generating a light source, a display unit 110 for displaying an operation state, a transmission driver 120 for PC communication, a battery 130 for providing power, and adjusting a power supply It comprises a power adjustment unit 140 for.

The material of the electrode is preferably a conductive material that satisfies biocompatibility.

As shown in Figure 3, the configuration of the control method of the portable body fat analyzer according to an embodiment of the present invention, the step of starting the operation (S10), and determining whether the measurement mode is set (S20) and Determining whether a communication start key is input from the key input unit when the measurement mode is set (S30), and transmitting the set value, the body fat percentage, the body fat amount, etc. stored when the communication start key is input (S40). Determining whether there is a variety of switch input from the key input unit when the communication start key is not input (S50), Detecting the input of the setting switch (S60), and when there is an input of the setting switch Setting the height, weight, age, gender, storage address, etc. of the target person (S70), detecting the input of the increase switch (S80), and if there is an input of the increase switch, increases the corresponding set value. (S90), detecting the input of the reduction switch (S100), reducing and changing the corresponding set value when there is an input of the reducing switch (S110), and detecting the input of the measurement switch ( S120, measuring the bioimpedance when the measurement switch is input (S130), calculating the body fat percentage and the body fat amount (S140), storing the set value, the body fat percentage and the body fat amount (S150), When the measurement mode is not set, it is determined whether the time setting key is input (S160), and when the time setting key is input, setting a current time, an alarm time, and the like (S170).

By the above configuration, the function of the portable body fat analyzer and its control method according to the embodiment of the present invention is as follows.

When power is applied from the battery 130, the operation procedure shown in FIG. 3, which is programmed and stored in the internal memory of the microprocessor 80, is executed by the microprocessor 80 to start an operation (S10). .

When the operation is started, the microprocessor 80 determines whether the measurement mode is set using the signal input from the key input unit 50 (S20).

When the measurement mode is set, the microprocessor 80 determines whether the communication start key is input from the key input unit 50 (S30), and when the communication start key is input, the set value and the body fat percentage stored in the internal memory, Data such as body fat amount is transmitted to a PC (not shown) using a transmission driver 120 such as an RS232C driver (S40).

However, when the communication start key is not input, the microprocessor 80 determines whether there are inputs of various switches, such as a setting switch, an increasing switch, a reducing switch, a measuring switch, etc., from the key input unit 50 to input the corresponding switch. The process according to step (S50).

First, the microprocessor 80 detects the input of the setting switch (S60), and receives the height, weight, age, gender, storage address, etc. of the measurement target from the key input unit 50 when there is an input of the setting switch. Set (S70).

Next, the microprocessor 80 senses the input of the increase switch (S80), and when there is an input of the increase switch, receives the change value from the key input unit 50 and increases and changes the corresponding set value (S90).

Next, the microprocessor 80 senses an input of the reduction switch (S100), and receives a change value from the key input unit 50 when the reduction switch is input (S110).

Next, the microprocessor 80 senses an input of the measurement switch (S120), and when there is an input of the measurement switch, the microprocessor 80 is sensed through an electrode attached to the user's finger to detect the input protection unit 10 and the differential amplifier. The bioimpedance is measured from the signal input and processed through the reference numeral 20, the absolute value unit 30, and the low pass filter 40 (S130). Next, the microprocessor 80 calculates the body fat percentage and the body fat amount (S140), and then stores the set value, the body fat percentage, the body fat amount, and the like in the internal memory (S150). In this way, the data stored in the internal memory of the microprocessor 80 is transmitted to the PC (not shown) through the transmission driver 120 when the communication start key is input while the measurement mode is set.

On the other hand, when the measurement mode is not set, the microprocessor 80 determines whether the time setting key is input from the key input unit 50 (S160), and from the key input unit 50 when the time setting key is input. In response to the set value, the current time and the alarm time are set (S170).

Therefore, the user can carry a portable body fat analyzer for each person and receive health care by measuring body fat anytime and anywhere.

As described above, in the embodiment of the present invention, by measuring and analyzing the electrical resistance (bioimpedance) of the body from the finger and calculates the body fat percentage, anyone can conveniently check his or her body fat rate without any professional knowledge. It is possible to provide a portable body fat analyzer and its control method which can enhance the convenience of use and at the same time help the individual's health care. This effect of the present invention can be used in a variety of applications in the field of body fat without departing from the scope of the technical idea of the present invention.

Claims (2)

Input protection means for protecting a signal input from an electrode attached to a finger; Differential amplifying means for amplifying the signal of the input protection means; An absolute value unit for calculating an absolute value of the signal of the differential amplifying means; A low pass filter for passing the low band of the signal of the absolute value portion; Key input means for inputting a user command; An A / D reference unit for providing an A / D conversion reference value, Low voltage checking means for inspecting a low voltage state; When the communication start key is input while the measurement mode is set, the stored setting value, body fat percentage, body fat amount, etc. are transmitted, and when the communication start key is not input, the processing according to various switch inputs is performed from the key input unit. Control means for setting a current time, an alarm time, and the like when the time setting key is input while the measurement mode is not set; A current source driving means for measuring biological impedance, A buzzer for generating an alarm sound, display means for displaying an operation state, Driving means for PC communication; A battery to provide power, Power adjusting means for adjusting power at low voltage; Portable body fat analyzer, characterized in that it comprises a converter for providing a power source. Transmitting the stored setting value, body fat percentage, body fat amount, etc. when the communication start key is input from the key input unit while the measurement mode is set; Determining whether there are various switch inputs from the key input unit when the communication start key is not input; Setting the height, weight, age, gender, storage address, etc. of the measurement target when there is an input of a setting switch; Incrementing and changing the set value when the increase switch is input; Reducing and changing the set value when there is an input of the reduction switch; Measuring the body impedance and calculating and storing the body fat percentage and the body fat amount when the measurement switch is input, And setting a current time, an alarm time, and the like when the time setting key is input while the measurement mode is not set.