KR20040042048A - A service system to analyze ingredient for a human body on online and a control method thereof - Google Patents

Abstract

PURPOSE: A system for a body component analysis service on the online and a controlling method thereof are provided to precisely calculating the body component analysis result data without a measuring error according to a mechanism and offer various diet information through the calculated data. CONSTITUTION: An upper body, an abdomen/trunk, and a lower body measuring terminal(10,40,70) measure the fat of each part through a four-terminal method. Measuring tools(20,50,80) measures impedance by flowing a high frequency constant current to each measuring terminal. Amplifying/insulating tools(30,60,90) amplify/insulate a signal inputted through each measuring tool. A controller(100) sequentially receives the impedance of each part and the weight data inputted from a weight input tool(110), and converts/outputs the signal into a digital signal. A PC(120) analyzes/calculates the fat of a user(160) by using the impedances, the weigh data, an age, a gender, and a height. A service provider server(150) provides the service on the web by storing/managing/analyzing the result data output from the PC through the Internet(140).

Description

On-line human component analysis service system and control method {A SERVICE SYSTEM TO ANALYZE INGREDIENT FOR A HUMAN BODY ON ONLINE AND A CONTROL METHOD THEREOF}

The present invention relates to an on-line system for providing a variety of diet information through the body composition analysis results using the bioelectrical resistance analysis method and a control method thereof, and more particularly, to accurately calculate the body composition analysis result data without measurement errors according to the mechanism It is possible to provide a variety of diet information through the calculated data, but it relates to an online human body component analysis service system and control method so that it can be easily serviced from a remote place through a network such as the Internet.

Bio electrical impedance analysis (BIA), which is well known, has been used since 1969 (Korean Journal of Obesity Vol. 6, No. 2, 1997, p144) for the analysis of human components. Using so that it is possible to analyze the sieve components economically and simply and relatively precisely, a number of sieve component analysis apparatus has recently been applied using the same.

As described above, among the conventional technologies using BIA, Korean Patent No. 161602 (filed date: June 24, 1995) shows an analysis of a human component using the bioelectrical impedance method and an analysis method thereof in FIGS. 1 and 2.

The technique provides electrodes E1 to E8 connected to the right palm, right thumb, left palm, left thumb, right forefoot, right forefoot, left forefoot, and left forefoot, respectively, and the terminals E1 to E8. Select any two electrodes and flow the current by the impedance analyzer 11 between the two electrodes, and select the other two electrodes except the two electrodes to select a voltage by the impedance analyzer 11 between the two electrodes. The technical characteristics of the measurement, the impedance of each part of the human body from the current and voltage of the impedance analyzer 11, and measuring the human body component from the measured impedance.

Looking at this technique, first using a conventional BIA, but as a technique for employing it, as shown in Figure 1, the right palm, right thumb, left palm, left thumb, right forefoot, right hind paw, left forefoot and left Impedance measuring device for measuring impedance by voltage-to-current ratio by sending an alternating current between the electrodes E1-E8 for contacting the back of the foot and each of the two electrodes of the electrode and reading the voltage difference between the other two electrodes ( 11), an electronic switch 10 controlled by a microprocessor 14 for selecting the electrical connection between the electrodes E1-E8 and the impedance measuring instrument 11, and a load for measuring the weight of the subject A measurement sensor 18, a keyboard 15 for inputting the height, age, gender, etc. of the person to be measured, and the impedance measuring instrument 11 and the load measuring sensor 18 are interfaced to the microprocessor 14. Amplifiers 12, 19 and A / D converters 13, microprocessors 14 for processing the data obtained from the measuring instrument 11 and the keyboard 15 and controlling the electronic switch 10; The display screen 16 and the printer 17 for displaying the processed data, the load measuring sensor 18 is installed to measure the weight of the subject, such as a conventional scale, the measured weight is micro Input to the processor 14, height, age, gender, etc. are input via the keyboard 15, the amount of body fluid (TBW), components other than fat (FFM) and body fat percentage (%) by the microprocessor 14 Human body component data such as BF).

Figure 2 is a diagram showing the model of the impedance applied to the analysis device, the resistance from the wrist of the right arm to the right shoulder joint R1, the resistance from the wrist of the left arm to the left shoulder joint R2, ankle of the right leg Resistance from R3 to right hip joint, R4 from left ankle to left hip joint, R4 to upper body resistance R5, resistance from palm to wrist Ra, resistance from thumb to wrist Rb, Rc is the resistance from the ankle to the ankle and Rd is the resistance from the ankle to the ankle.

However, as described above, the eight electrodes (E1 to E8) connected to the right palm, right thumb, left palm, left thumb, right forefoot, right forefoot, left forefoot and left forefoot, respectively. Selects two electrodes among the electrodes E1 to E8 and flows current through the impedance analyzer 11 between the two electrodes, selects two electrodes other than the two electrodes, and selects an impedance between the two electrodes. Since the electronic switch 10 is necessary as a switching element for measuring the voltage by the analyzer 11, the electronic switch 10 having a plurality of switch contacts should be designed by providing a delay time for every measurement. Due to this, there is a problem that measurement errors may occur due to a delay of the measurement time and leakage caused by an OFF switch.

In addition, the conventional technologies have only a function limited to a body composition analyzer, and as a result, various information related to diet cannot be provided from a remote place, and thus there is a problem of not reviving in the information age global era. .

The present invention has been made in order to solve the above problems, an object of the present invention is to accurately calculate the human body component analysis result data without measurement error according to the mechanism, to provide a variety of diet information through the calculated data online The present invention provides a human body component analysis service system.

Another object of the present invention is to provide an online human body composition analysis service system and a control method thereof, so that various diet information through the body composition analysis results can be easily serviced from a remote place through the Internet.

1 is a circuit block diagram of a conventional human component analysis device,

2 is a view showing a model of the impedance for applying to the analysis device of FIG.

3 is a block diagram of impedance measurement of a human body according to the present invention analysis component system of human body,

4 is a control block diagram of the human component analysis service system of the present invention online;

5 is a control block diagram of a human body component analysis service system online according to an embodiment of the present invention;

6 is a flowchart illustrating a method for controlling a human component analysis service on-line of the present invention.

<Description of the symbols for the main parts of the drawings>

10: upper body portion measuring stage 20, 50, 80: first to third measuring means

40: measuring abdomen and torso area 70: measuring lower body parts

30, 60, 90: first to third amplification and insulation means 100: control means

101: switch unit 102: A / D conversion unit

103: microprocessor 110: weight input means

120: PC130: peripheral device

140: Internet 150: service provider server

160: user

The present invention for achieving the above object is an upper body region measuring step for measuring the body fat of the upper body region through the four-terminal method; First measuring means for flowing a high frequency constant current to the upper body portion measuring stage and measuring a potential difference input at this time; First amplifying and insulating means for amplifying and isolating a signal input through the first measuring means; An abdominal and torso measuring unit for measuring body fat of the torso including the abdomen through a four-terminal method; Second measuring means for flowing a high frequency constant current to the abdomen and torso region measuring stages and measuring a potential difference input at this time; Second amplifying and insulating means for amplifying and isolating a signal input through the second measuring means; Lower body region measurement unit for measuring the body fat of the lower body region through the four-terminal method; Third measuring means for flowing a high frequency constant current to the lower body portion measuring stage and measuring a potential difference input at this time; Third amplifying and insulating means for amplifying and isolating a signal input through the third measuring means; Control means for sequentially receiving the potential difference (impedance) and weight data for each body part inputted through the first to third amplification and insulation means, and converting the signal and outputting the digital signal; Weight input means for detecting the weight of the subject and inputting the weight data according to the control means; A PC for analyzing the body components of the subject using impedance and weight data for each body part inputted through the control means and data of sex, age, height, etc. of the subject; A peripheral device connected to the PC, the peripheral device including an input or output of data or a display function; A service provider server configured to receive and store various body composition result data of the subject to be output from the PC through the Internet, and to start a service on the web through a predetermined diet program or adult disease prevention program. Has features.

Another feature of the present invention is to use the weight input means for detecting the weight of the subject to generate the weight data accordingly, the calculated impedance and body weight data for each body part, the data of the sex, age, height, etc. of the subject A PC for analyzing the body composition of the subject to calculate result data, and connected to the PC to input information data (gender, age, etc.) of the subject, and print out the calculated body composition analysis result. Or a body composition analysis system including a peripheral device to display the upper body region measurement stage including two measurement stages for measuring body fat of the upper body region including both arms and chest through a four-terminal method; First measuring means for flowing a high frequency constant current to the upper body portion measuring stage and measuring a potential difference input at this time; First amplifying and insulating means for amplifying and isolating a signal input through the first measuring means; An abdominal and torso measuring unit including two measuring units to measure body fat of the torso including the abdomen through a four-terminal method; Second measuring means for flowing a high frequency constant current to the abdomen and torso region measuring stages and measuring a potential difference input at this time; Second amplifying and insulating means for amplifying and isolating a signal input through the second measuring means; A lower body region measurement stage including two measurement stages for measuring body fat of the lower body region including both legs and pelvis through a four-terminal method; Third measuring means for flowing a high frequency constant current to the lower body portion measuring stage and measuring a potential difference input at this time; Third amplifying and insulating means for amplifying and isolating a signal input through the third measuring means; A control unit for receiving the potential difference (impedance) and weight data for each body part output from the first to third amplification and insulation means through the three-part measuring stages in a sequence, and converting the digital signal and outputting the digital signal to a PC. It has a feature further comprises a means.

Another feature of the invention is the process of measuring the impedance of the upper body region, including the arm and chest of the subject; Measuring an impedance of a body part such as an abdomen of the subject; Measuring an impedance of the lower body including both legs and the chest of the subject; Measuring the weight of the subject; Transmitting the measured upper body part, the abdomen and the trunk part, the lower part of the body, and the weight data to the PC; Calculating a body composition result using the upper body, torso, lower body and weight data of the subject, and the sex, age, height, etc. of the subject as variables, which are input through the control means; Transmitting the body component result data calculated by the PC to a service provider server through the Internet; Storing the body composition result data of the subject to be transmitted through the Internet; Providing a predetermined internet service for preventing diet and adult disease on the web using the stored body composition result data; It is in including.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail.

3 is a schematic diagram of impedance measurement of a human body according to the present invention.

As shown, the method for measuring the human body component of the system of the present invention divides the human body into three parts for body composition measurement.

That is, the body fat is measured by dividing the upper body part, the abdomen and the trunk part, and the lower body part into three parts. First, the upper part is measured at both ends of the impedance (ra) (ra) of the hands (n11, n12), respectively. (n13, n14), and a constant current flows with both hands through a constant constant current source (I1) by the four-terminal method (4 wire measurement technique), wherein the potential difference between the measuring terminal (n12) and the measuring terminal (n13) Measure (V1) to find the impedance (RA) of the upper body including both arms and chest.

Here, the constant current source I1 according to the present invention uses a high frequency alternating current (AC) current instead of a direct current (DC) current.

Secondly, the abdomen and torso are composed of measuring terminals n21 and n22 and n23 and n24 respectively at both ends of the abdomen rb and rb, and a constant current flows to both sides of the abdomen through a constant constant current source I2. In this case, the potential difference V2 between the measurement terminal n22 and the measurement terminal n23 is measured to obtain the impedance RB of the trunk portion such as the abdomen.

According to the present invention, the method for measuring the abdomen and torso area is capable of measuring body fat not only for the abdomen and torso but also for the local parts of the desired body (for example, forearm, thigh, buttocks, etc.), which is the present invention. It becomes the characteristic of.

Third, the lower body part constitutes measuring terminals (n31, n32) (n33, n34) at both ends of the impedance (rb) (rb) of both feet, and flows a constant current to both feet through a constant constant current source (I3). The potential difference V3 between the stage n32 and the measurement stage n33 is measured to determine the impedance RC of the lower body including both legs, the pelvis, and the like.

As described above, the body fat analysis method according to the present invention uses three constant current sources and one voltage measuring device, and uses an electronic switch to switch electrodes according to the measurement site. A constant current source (I1) (I2) (I3), and supplies a constant current to each of the measurement stages (n11, n14) (n21, n24) (n31, n34) of each of the three parts of the human body, wherein Voltage measuring means (V1) (V2) (V3) are provided to measure the potential difference between the measuring stages (n12, n13) (n22, n23) (n22, n23), and at this time, each independent amplification which will be described later. Amplification by means of means.

Means for separating the ground (GND1) (GND2) (GND3) between the commercial power supply and the measurement stage to prevent the inflow of commercial AC voltage (AC 110 ~ 220V) that may occur at this time (means such as optical insulation or trans insulation) Use to prevent electric shock.

A circuit block diagram of the system according to the impedance measurement for measuring body fat for each body part is shown in FIG. 4.

As shown, the system of the present invention flows a high-frequency constant current to the upper body portion measuring stage 10 and the upper body portion measuring stage 10 for measuring the body fat of the upper body region through a four-terminal method and the potential difference input at this time It includes a first measuring means 20 for measuring the first amplification and insulating means 30 to amplify and insulate the signal input through the first measuring means 20, and a four-terminal abdomen Second measurement means (50) for flowing a high frequency constant current to the abdomen and torso region measuring stage 40 for measuring the body fat of the torso, and the abdomen and torso region measuring stage 40 and measuring the potential difference input at this time (50) ), A second amplification and insulation means 60 that amplifies and insulates the signal input through the second measurement means 50, and a lower body region measurement for measuring body fat of the lower body region through a four-terminal method. High frequency constant current in the stage 70 and the lower body portion measuring stage 70 Third measuring means (80) for flowing and measuring a potential difference input at this time, a third amplifying and insulating means (90) for amplifying and isolating a signal input through the third measuring means (80), and the first Control means 100 for sequentially receiving the potential difference (impedance) for each body part input through the first to third amplification and insulation means 30, 60, and 90, and weight data, and converting this signal and outputting the digital signal. ), A weight input means 110 for detecting the weight of the subject and inputting the weight data according to the control means 100, impedance and weight data for each body part input through the control means 120; And a personal computer (PC) 120 for calculating various data (information) for preventing a diet or various adult diseases, such as the body fat percentage of the subject, using data such as the sex, age, height of the subject, and the PC 120. Connected to, the mouth of the data Prescription diet exercise prescription including the peripheral device 130, including the output or output or display function, and various body composition data of the subject to be output from the PC 120 is received, stored, managed and analyzed through the Internet 140 Including personalized diet program, status maintenance program, weight gain program, adult disease prevention program, etc., by starting the service on the web through this, the subject can receive a variety of programs according to their body fat results even in remote places And a plurality of users 160 including a service provider server 150 and a subject using a diet service provided by the consumer provider server 150.

5 is a control block diagram of a human body component analysis service system online according to an embodiment of the present invention.

As shown, the upper body portion measuring stage 10 and the first measuring means 20 includes the measuring stage (n11 ~ n14) of both hands of the upper body portion. In addition, a constant current source I1 is connected to the measurement terminal n11 and the measurement terminal n14, and a voltmeter V1 is connected to the measurement terminal n12 and the measurement terminal n13, and the impedance of the upper body portion ( RA) is measured.

In addition, the abdominal and torso site measuring stage 40 and the second measuring means 50 includes measuring stages n21 to n24 at both ends of the abdomen. In addition, a constant current source I2 is connected to the measurement terminal n21 and the measurement terminal n24, and a voltmeter V2 is connected to the measurement terminal n22 and the measurement terminal n23, and includes a body including an abdomen. The impedance (RB) of the site is measured.

The abdominal and torso measuring unit 40 may measure local parts of the human body, that is, the thigh, the forearm or the hip, using the two measuring units n21 and n22 and the measuring units n23 and n24. Has the advantage of being.

In addition, the lower body portion measuring stage 70 and the third measuring means 80 includes the measuring stage (n31 ~ n34) of both feet. In addition, a constant current source I3 is connected to the measurement terminal n31 and the measurement terminal n34, and a voltmeter V3 is connected to the measurement terminal n32 and the measurement terminal n33, and includes a lower body including a pelvis. The impedance (RC) of the site is measured.

In addition, the control means 100 is a switch for switching the potential difference (impedance) for each body part input through the first to third amplification and insulation means (30, 60, 90) and the weight data sequentially received ( 101, an A / D converter 102 for converting an analog signal input through the switch 101 into a digital signal, and a signal output through the A / D converter 102; And a microprocessor 103 for sequentially controlling the switch 101 on and off.

The weight input means 110 is connected to the switch 101 of the control means 100 and amplifies the weight sensor 111 for detecting the weight of the subject and the weak weight signal output from the weight sensor 111 And an amplifier 112.

The peripheral device 130 connected to the PC 120 includes a keyboard 132 for inputting the sex, height, and weight of the subject, a monitor 131 for displaying body fat analysis results, and a printer 133 for printing the measurement results. ), And the like.

In addition, a serial or parallel communication means (CM) (not shown) is interposed between the control means 100 and the PC 120 to transmit data.

6 is a flowchart illustrating a method for controlling a human component analysis service on-line of the present invention.

As shown in the figure, the method for controlling the analysis of the human body component online on the present invention includes measuring the impedance of the upper body part including the arms and the chest part of the subject (S10), and a body part such as the abdomen of the subject. Measuring impedance (S20), measuring impedance of the lower body including both legs and chest of the subject (S30), measuring the weight of the subject (S40), and The process of transmitting the measured upper body, abdomen and torso, lower body and weight data to the PC (S50), the upper body, torso, lower body and the subject of the subject input through the control means 100 and Using the weight data as a variable, calculating the body composition results such as body fat (S60) and the process of transmitting the body composition result data calculated by the PC 120 to the service provider server 150 through the Internet ( S70), Storing the body composition result data of the test subject transmitted through the Internet (S80), and providing a variety of Internet services for preventing diet and adult disease on the web using the stored body composition result data (S90). Include.

The operation on the present invention configured as described above will be described below.

First, in order to analyze body fat through the system according to the present invention, the subject grasps each electrode having the measurement stages n11 and n12 and the measurement stages n13 and n14 of the upper body site measurement stage 10 with both hands. . The electrode structure at this time is formed into a structure in which two electrodes can be in contact with the hand when the subject is naturally held by the hand.

In addition, each of the electrodes formed with the measurement stages n21 and n22 and the measurement stages n23 and n24 of the abdominal and torso region measuring stage 40 is composed of four separate bodies attached to a band-shaped or rod-shaped instrument. It is attached to the site.

In addition, each of the electrodes formed with the measurement stages n31 and n32 and the measurement stages n33 and n34 of the lower body measurement stage 70 is attached to the vicinity of the ankle. Has a modified form.

As such, after connecting each measuring stage to the subject, the first to third measuring means 20, 50 and 80 measure the impedance of each measuring stage 10, 40 and 70. The switch 101 is sequentially turned on under the control of 100, and the signal of the upper part potential difference V1 through the upper part measuring stage 10 is first amplified and the insulating means 30 → the switch 101. A / D conversion unit 102 is input to the microprocessor 103 (step S10).

As such, when the potential difference V1 signal is input through the upper body portion measuring stage 10, the microprocessor 103 switches the switch 101, and the abdomen and the torso portion measuring portion 40 are connected to each other. The body potential difference (V2) signal is input to the second amplification and insulation means 50 → switch 101 → A / D converter 102 → microprocessor 103 (step S20).

Then, when the potential difference (V2) signal through the abdomen and torso region measuring stage 40 is input, the microprocessor 103 switches the switch 101, the lower body potential difference through the lower body region measurement stage 70 The signal (V3) is input to the third amplification and insulation means 80 → switch 101 → A / D converter 102 → microprocessor 103 (step S30).

When all of the potential difference signals V1, V2, and V3 through the measurement stages 10, 40, and 70 are input, the microprocessor 103 switches the switch 101, and the weight input means 110. Through the weight signal through the switch 101 → A / D conversion unit 102 → allows the microprocessor 103 to be input (step S40).

As such, when all four measurement values are input to the microprocessor 103 of the control means 100, the microprocessor 103 is measured using the direct and parallel communication lines CM. The value is transmitted to the PC 120 (S50 process).

The PC 120 includes upper and lower body parts, a torso part, a lower part and weight data of the subject to be input through the control means 100, and a gender, age, height, etc. of the subject to be input through the keyboard 132. Using the variable, the sieve component results are calculated (step S60).

In this case, the PC 120 may display or print out the body composition result data through the monitor 131 or the printer 133.

In addition, the PC 120 transmits the calculated body component result data of the measured subject to the service provider server 150 through the Internet 140 (S70).

Therefore, the service provider server 150 stores the body composition result data of the measured subject transmitted through the Internet 140, and various internet services for diet and adult disease prevention on the web using the stored body composition result data. By providing the plurality of users 150 including the subject (who accesses the web) will be provided with a variety of diet-related services via the Internet even in remote places (S80, S90 process).

As described above, the present invention divides the human body into three parts for body composition analysis, and then detects the corresponding impedances sequentially, so that the human body component analysis result data can be accurately calculated without a measurement error according to a mechanism. have.

In addition, the present invention has the advantage that it is easy to receive a variety of diet information from a remote location through the Internet through the calculated first component result data.

Claims (6)

An upper body region measuring unit 10 for measuring body fat of the upper body region through a four-terminal method; First measuring means (20) for flowing a high-frequency constant current to the upper body portion measuring stage (10) and measuring a potential difference input at this time; First amplifying and insulating means (30) for amplifying and isolating a signal input through the first measuring means (20); An abdomen and a body part measuring unit 40 for measuring body fat of a body part including the abdomen through a four-terminal method; Second measuring means (50) for flowing a high frequency constant current to the abdomen and torso part measuring stage (40) and measuring a potential difference input at this time; Second amplifying and insulating means (60) for amplifying and isolating the signal input through the second measuring means (50); A lower body region measuring unit 70 for measuring body fat of the lower body region through a four-terminal method; Third measuring means (80) for flowing a high frequency constant current to the lower body portion measuring stage (70) and measuring a potential difference input at this time; Third amplifying and insulating means (90) for amplifying and isolating a signal input through the third measuring means (80); Control means for sequentially receiving the potential difference (impedance) and weight data for each body part input through the first to third amplification and insulating means (30, 60, 90), and converts this signal to output a digital signal ( 100); Weight input means (110) for detecting the weight of the subject and inputting the weight data according to the control means (100); PC 120 for analyzing the body composition of the subject using impedance and weight data for each body part inputted through the control unit 120 and data such as sex, age, height of the subject, and calculating the result data. ; A peripheral device connected to the PC 120 and including a function of inputting, outputting, or displaying data; And Various body composition result data of the subjects output from the PC 120 is received, stored, managed and analyzed through the Internet 140, personalized diet program including diet exercise prescription, status maintenance program, weight gain program And a service provider server (150) for starting a service on the web through the adult disease prevention program and the like. The method of claim 1, The control means 100 is a switch 101 which is switched to sequentially receive the potential difference (impedance) for each body part input through the first to third amplification and insulation means (30, 60, 90), and the weight data And an A / D converter 102 for converting an analog signal input through the switch 101 into a digital signal, and a signal output through the A / D converter 102. Human body component analysis service system on-line, characterized in that it comprises a microprocessor (103) for sequentially controlling the switch 101 on, off. The method of claim 1, The abdomen and torso measuring unit 40 is a human body such as the forearm, thigh, calf, hip, as well as the measurement of the abdomen and torso area of the human body using two output terminals (n21, n22) and measuring terminals (n23, n24) An on-line human body component analysis service system, characterized in that it is possible to measure body fat for a topical area of the body. The weight-measuring means 110 detects the weight of the subject and generates weight data according to the weight of the subject, using the calculated impedance for each body part and the weight data, and data such as sex, age and height of the subject. PC 120 which analyzes the body composition of the body and calculates the result data, and is connected to the PC 120 to input information data (gender, age, height, etc.) of the subject, and the calculated body composition analysis result. In the body composition analysis system of the human body, including a peripheral device for printing or displaying the output, An upper body region measuring stage 10 including two measuring stages n11 and n12 and a measuring stage n13 and n14 for measuring body fat of the upper body region including both arms and chests through a four-terminal method; First measuring means (20) for flowing a high-frequency constant current to the upper body portion measuring stage (10) and measuring a potential difference input at this time; First amplifying and insulating means (30) for amplifying and isolating a signal input through the first measuring means (20); An abdominal and torso measuring unit 40 including two measuring units n21 and n22 and measuring units n23 and n24 to measure body fat of the torso including the abdomen through a four-terminal method; Second measuring means (50) for flowing a high frequency constant current to the abdomen and torso part measuring stage (40) and measuring a potential difference input at this time; Second amplifying and insulating means (60) for amplifying and isolating the signal input through the second measuring means (50); A lower body region measuring unit 70 including two measuring stages n21 and n22 and a measuring stage n23 and n24 to measure body fat of the lower body including both legs and pelvis through a four-terminal method; Third measuring means (80) for flowing a high frequency constant current to the lower body portion measuring stage (70) and measuring a potential difference input at this time; Third amplifying and insulating means (90) for amplifying and isolating a signal input through the third measuring means (80); The potential difference (impedance) and weight data for each body part output from the first to third amplification and insulation means (30, 60, 90) are input through the three-part measuring stage (10, 40, 70) in a series of orders. On-line human body component analysis service system, characterized in that it further comprises a control means (100) for converting this signal to a digital signal and output to the PC (120). The method of claim 4, wherein Each of the electrodes formed with the measuring stages n21 and n22 and the measuring stages n23 and n24 of the abdominal and torso measuring unit 40 is composed of four separate body parts to be attached to a band or rod-shaped instrument. On-line human component analysis service system, characterized in that attached to. Measuring an impedance of the upper body region including the arms and the chest of the subject (S10); Measuring an impedance of a body part such as the abdomen of the subject (S20); Measuring an impedance of the lower body part including both legs and the chest part of the subject (S30); Measuring a weight of the subject (S40); Transmitting the measured upper body part, the abdomen and the trunk part, the lower part of the body, and the weight data to the PC (S50); A process of calculating a body composition result using the upper body part, the body part, the lower part body part and the weight data of the subject measured through the control means 100 and the sex, age, height, etc. of the subject as variables (S60) ; Transmitting the body component result data calculated by the PC 120 to the service provider server 150 through the Internet (S70); Storing the body component result data of the subject to be transmitted through the Internet (S80); Providing a predetermined internet service for preventing diet and adult disease on the web by using the stored body composition result data (S90); On-line human component analysis service control method characterized in that it comprises a.