Adaptive control method and device for limit deviation in skin electrical signal testing

An adaptive control and galvanic skin response technology, applied in the field of biomedical information processing, can solve problems such as the inability to measure the galvanic skin signal and the inability to accurately judge the emotional changes of the tested person.

Active Publication Date: 2012-06-27
CHONGQING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

The circuit can only output the maximum or minimum value that the circuit can handle, but cannot measure a more realistic electrodermal signal, and thus cannot accurately judge the emotional changes of the tested person

Method used

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  • Adaptive control method and device for limit deviation in skin electrical signal testing
  • Adaptive control method and device for limit deviation in skin electrical signal testing
  • Adaptive control method and device for limit deviation in skin electrical signal testing

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings, examples or implementations. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] A top-bias adaptive control method for electrodermal signal testing, a flow diagram of a preferred embodiment is as follows figure 1 As shown, the steps are:

[0035] Step 1: Set the reference voltage B, and the test electrode acts on the human body;

[0036] The setting of the reference voltage B is to prepare for measuring the electrodermal signal. The reference voltage set in this step is the initial value of the reference voltage, and the reference voltage may change in the subsequent steps; the test electrode is a medical special electrode, and the electrode’s The impe...

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Abstract

The invention relates to the technical field of biomedical information processing, and provides an adaptive control method for the limit deviation in a skin electrical signal testing. The adaptive control method comprises the steps as follows: a reference voltage B is set, and a testing electrode is applied to a human body; skin electrical signals A of the human body is picked up through the testing electrode under the action of the reference voltage B; the skin electrical signals A are amplified through a primary amplifying circuit so as to obtain amplified electrodermal response signals A1;the amplified electrodermal response signals A1 subtract the reference voltage B so as to obtain voltage difference C; the voltage difference C is processed through a secondary amplifying circuit so as to obtain amplified voltage difference C1; the amplified voltage difference C1 is processed through analog-to-digital conversion; in addition, the reference voltage B is regulated step by step if the absolute value of C1 is more than the threshold value V1 of a the circuit so as to lead the absolute value of A1 minus B is less than V1, or the reference voltage B and C1 are output or stored. Theinvention also provides an adaptive control device for the limit deviation in the skin electrical signal testing.

Description

technical field [0001] The invention relates to the technical field of biomedical information processing, in particular to a method and device for self-adaptive control of top bias of electrodermal signal testing. Background technique [0002] Electrodermal skin signals include skin resistance and skin galvanic response signals, which are widely used as indicators to explore the process of human physiological and psychological activities, and also as an indicator to evaluate people's intentional activities, arousal levels and emotional responses, especially for affecting people. Emotional responses that have an important relationship between mental activity and health. At present, there is no better indicator to measure the intensity, duration and frequency of emotional responses. Skin resistance is still an important indicator for the study of human emotions. Sweat gland activity is an important factor that produces and affects skin resistance. It has been proved by experim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/053
Inventor 李章勇王伟刘圣蓉赵德春付敏杰任永
Owner CHONGQING UNIV OF POSTS & TELECOMM
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