Multi-frequency and multi-segment measuring device and measuring method of human body impedance

A technology of human body impedance and measuring device, applied in the directions of diagnostic recording/measurement, medical science, sensor, etc., to achieve the effect of low hardware and software cost, simple hardware design and good market prospect

Inactive Publication Date: 2009-11-18
DALIAN UNIV
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Problems solved by technology

[0003] Aiming at the deficiencies of existing human body impedance measurement technology and measuring instruments, the purpose of the present invention is to provide a measurement device and ...

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  • Multi-frequency and multi-segment measuring device and measuring method of human body impedance
  • Multi-frequency and multi-segment measuring device and measuring method of human body impedance
  • Multi-frequency and multi-segment measuring device and measuring method of human body impedance

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Embodiment Construction

[0019] like figure 1 , a multi-frequency multi-segment measuring device for human body impedance, comprising a power supply 1, a multi-frequency signal generating circuit 2, a constant current conversion circuit 3, an electrode 4, a multi-way switch 5, a standard resistor 6, a differential amplifier circuit 7, and a signal acquisition circuit 8 , ARM controller 9 and touch screen 10, the electrodes 4 include 2 current input electrodes and 4 sampling voltage electrodes. The power supply 1 is connected to each circuit, the input end of the constant current conversion circuit 3 is connected to the multi-frequency signal generating circuit 2, the output end is connected to the current input electrode, the sampling voltage electrode is connected to the standard resistor 6 through the multi-way switch 5, and one end of the standard resistor 6 is grounded. The input end of the differential amplifier circuit 7 is connected to the sampling voltage electrode, the output end is connected...

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Abstract

The invention relates to a measuring device and a measuring method of human body impedance. The measuring device consists of a multi-frequency signal generation circuit, a constant-current switching circuit, a multi-way switch, electrodes, a standard resistor, a differential amplifier circuit, a signal acquisition circuit, an ARM controller and a display screen. The measuring device adopts six electrodes combined with the multi-way switch to form five measuring circuits and uses a touch screen to replace a computer for selecting a measuring mode and displaying the measuring result; the multi-frequency signal generation circuit generates multi-frequency excitation signals and can measure five segments of impedance of a human body at different frequencies; and the ARM controller runs an operating system and an application program to control each functional unit to run correctly so as to achieve multi-frequency and multi-segment measurements of the human body impedance. The measuring device has simple design of hardware, is easy to operate, is portable, and has low cost and good market prospect.

Description

Technical field [0001] The invention relates to a measuring device and a measuring method of biological impedance, in particular to a measuring device and a measuring method of human body impedance. Background technique [0002] Bioimpedance has a certain relationship with biological function, and bioimpedance measurement has been widely used in the analysis of body composition. The measurement technology related to bio-impedance is constantly improving, and various bio-impedance analyzers have come out. At present, most body impedance measuring instruments measure the impedance of the whole body of the human body, but studies have shown that the impedance measurement of individual segments will provide body composition information that is covered up in the overall measurement method. Moreover, the hardware design of the existing human body impedance measuring devices is complicated, and the general volume is relatively large, and it needs to cooperate with a computer for m...

Claims

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Application Information

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IPC IPC(8): A61B5/053
Inventor 陈波张雪平刘娜
Owner DALIAN UNIV
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