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Semiconductor device, measurement system and measurement method

A measurement system, semiconductor technology, used in diagnostic recording/measurement, medical science, sensors, etc., to solve problems such as inability to obtain skin health

Pending Publication Date: 2019-12-10
LAPIS SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In other words, it is impossible to obtain information on the inner side of the dermis, such as the collagen layer, which is important for the health of the skin
[0008] (2) Changes in impedance measured due to changes in the contact area between the skin and the electrodes
In other words, in order to obtain a more accurate body fat percentage, personal information is required to be input to the measurement device, and since it is a recent trend related to personal information, it becomes a problem for people who are sensitive to personal information, for example.

Method used

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  • Semiconductor device, measurement system and measurement method
  • Semiconductor device, measurement system and measurement method
  • Semiconductor device, measurement system and measurement method

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Embodiment Construction

[0025] Below, refer to Figure 1 to Figure 6 , the manner for implementing the present invention will be described in detail.

[0026] figure 1 The overall configuration of the measurement system 1 according to the present embodiment in a state of being worn on the arm 14 is shown. Such as figure 1 As shown, the measurement system 1 includes a main body device 10 , electrodes (skin contact terminals) 13 - 1 and 13 - 2 (hereinafter referred to as “electrodes 13 ” when collectively referred to as them), and wiring 16 . The main body device 10 is configured to include a semiconductor device 11 and a computing unit 12 to be described later, and is a main part in the measurement of biological impedance.

[0027] The electrodes 13 - 1 and 13 - 2 are a pair of substantially spherical electrodes. Due to being spherical, the electrodes 13-1, 13-2 can be as figure 1 Place it with the skin sandwiched (clamped) as shown. By arranging the electrodes across the skin, the measurement s...

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Abstract

The present invention provides a semiconductor device, a measurement system, and a measurement method capable of accurately measuring biological information without referring to body data even when the shape of a surface portion in contact with a contact terminal changes. The semiconductor device including: a signal source (30) that generates a sine wave signal; an output section that outputs a measurement signal corresponding to the sine wave signal to a test subject via a first electrode (13-1); an input section that receives, as an input signal, the measurement signal that has passed through the test subject and been input via a second electrode (13-2); a first calculation device (31) that calculates correlation values between the sine wave signal and the input signal; and a second calculation section that, based on the correlation values, calculates a bioelectrical impedance of the test subject.

Description

technical field [0001] The present invention relates to a semiconductor device, a measurement system, and a measurement method, and particularly relates to a semiconductor device, a measurement system, and a measurement method for measuring the impedance of a living body. Background technique [0002] Conventionally, Patent Document 1 is known as a document related to the measurement of biological impedance. The electrical characteristic measurement device disclosed in Patent Document 1 is characterized in that it has: a measurement signal generation unit that generates a digital waveform; and a conversion unit that converts the digital waveform into an analog waveform, and includes a measurement signal supply unit that passes The first and second electrodes that can be pasted on the surface of the subject at two predetermined positions separated from each other in a conductive manner input an analog waveform signal to the subject; The current value of the analog waveform s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/053A61B5/00
CPCA61B5/0531A61B5/0537A61B5/443A61B5/4872A61B2560/0223
Inventor 上原辉昭
Owner LAPIS SEMICON CO LTD