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Method for testing fatigue based on expansion of face skin as well as sensor and device for test

A facial skin and fatigue testing technology, applied in the directions of diagnostic recording/measurement, medical science, sensors, etc., to achieve the effect of easy popularization and use, simple device structure, and simple structure

Active Publication Date: 2010-09-29
WISESOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]When people are in a state of fatigue, not only their work efficiency is low, but also they are prone to safety problems
Especially for motor vehicle drivers and high-altitude workers, the danger of operating in a fatigued state is greater. The mild ones cause property damage, and the severe ones cause personal injury, disability, or even loss of life.
[0003] Regarding the detection of human fatigue state, the prior art mainly focuses on the detection of the fatigue state of motor vehicle drivers, including electroencephalogram monitoring method, heart rate and blood pressure monitoring method, Eye closure time monitoring method, pupil measurement method, head displacement measurement method, steering wheel movement monitoring and other methods (see "Research on Monitoring Method of Motor Vehicle Driver's Driving State", Science and Technology Information Development and Economics, Volume 18, No. 3, 2008, Li Xiaoming, Yue Chunfang), among them, EEG monitoring method and heart rate and blood pressure monitoring method are generally applicable to all kinds of people, and there are many researchers, but the change process of EEG and heart rate is extremely complicated, and it is difficult to build a mathematical model To accurately express its changing law, the accuracy of the detection effect cannot be guaranteed

Method used

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  • Method for testing fatigue based on expansion of face skin as well as sensor and device for test
  • Method for testing fatigue based on expansion of face skin as well as sensor and device for test
  • Method for testing fatigue based on expansion of face skin as well as sensor and device for test

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In this embodiment, the fatigue test device based on facial skin stretching is as follows: figure 2 As shown, it includes five groups of skin stretching front-end detection circuits 1-1, 1-2, 1-3, 1-4, 1-5, programmable logic device 2, microprocessor 3 and alarm 4.

[0044] The structure of each group of skin stretching front-end detection circuits is as follows: image 3 As shown, it consists of a skin stretch measurement sensor 5, an inductance measurement circuit 6 and a comparator 7. The structure of the skin stretching measurement sensor 5 is as Figure 5 As shown, it is composed of enameled wires 10 and adhesive plaster 11. The enameled wires 10 are fixed on the adhesive plaster 11 and arranged evenly in a "U" shape with end-to-end connections and opposite openings. The electrical schematic diagram of the inductance measurement circuit 6 is as Figure 7 As shown, the core device of this circuit is a voltage-controlled oscillator chip of the type MC1648 produce...

Embodiment 2

[0053] In this embodiment, the fatigue test device based on facial skin stretching is as follows: figure 1 As shown, the differences from the examples are:

[0054] 1. The skin telescopic front-end detection circuit is a group;

[0055] 2. The structure of the skin stretching measurement sensor 5 is as follows: Figure 6 As shown, the enameled wire is fixed on the tape in a coil shape;

[0056] 3. The electrical schematic diagram of the inductance measurement circuit 6 is as follows Figure 8 As shown, it is an LC oscillating circuit, and the microprocessor 3 passes the formula: f = 1 2 π LC C = C 1 C 2 C 1 + C 2 L = 1 4 ...

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Abstract

The invention relates to a fatigue test method based on facial skin stretching. The method is characterized by comprising the steps as follows: (1) a skin stretching measurement sensor is installed at the forehead or / and the canthus or / and the cheek of a testee, the facial skin of the testee is collected to ensure that the skin stretching measurement sensor generates an inductance; (2) the changeof the inductance of the skin stretching measurement sensor is analyzed, the stretching change of the facial skin of the testee is confirmed according to the change of the inductance which is generated by the skin stretching measurement sensor by the facial skin of the testee, and whether the testee is under fatigue state is judged according to the stretching change of the facial skin of the testee. A fatigue test device based on the facial skin stretching comprises at least a set of skin stretching front-end detection circuits, a programmable logic apparatus, a microprocessor and a warner.

Description

technical field [0001] The invention belongs to the field of human body fatigue state detection, in particular to a fatigue testing method and device. Background technique [0002] People in a fatigued state not only have low work efficiency, but also are prone to safety problems. Especially for motor vehicle drivers and high-altitude workers, the danger of operating in a fatigued state is greater. The light ones cause property damage, and the severe ones cause personal injury and disability, or even loss of life. [0003] Regarding the detection of human fatigue state, the prior art mainly focuses on the detection of the fatigue state of motor vehicle drivers, including electroencephalogram monitoring method, heart rate and blood pressure monitoring method, eye closure time monitoring method, pupil measurement method, and head displacement measurement method. , steering wheel movement monitoring and other methods (see "Research on the Monitoring Method of Motor Vehicle Dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/18
Inventor 莫思特
Owner WISESOFT CO LTD