Construction machinery operator fatigue operation detection system and method based on machine vision
A technology of construction machinery and machine vision, applied in the direction of instruments, alarms, computer parts, etc., can solve the problems of workers' fatigue state, inability to achieve real-time detection and evaluation, difficult detection methods, etc., and achieve accurate assessment of fatigue level. Effect
Inactive Publication Date: 2021-03-19
TIANJIN UNIV
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[0005] However, the scale evaluation method also has many deficiencies: (1) It cannot achieve real-time detection and evaluation
The studies in the literature all adopt the method of requiring workers to stop working at regular intervals and accepting questionnaire surveys, so that only the fatigue status of workers at a certain point in time can be obtained.
(2) The test results are highly subjective
This kind of fatigue detection based on behavior status can also achieve non-invasive real-time detection; however, the detection object is construction machinery, and the detection indicators need to be studied according to the type of machinery, so it is difficult to form a general detection method
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[0059] In order to further understand the invention content, characteristics and effects of the present invention, the following embodiments are enumerated hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0060] See Figure 1 to Figure 7 , a machine vision-based fatigue detection system for construction machinery operators, the system includes: a vision acquisition system for collecting video data, an image processing system for extracting organ features from facial images, and an image processing system for The fatigue index evaluation system for evaluating the fatigue degree of the facial organ movement data; the visual acquisition system collects the facial video data of the operator; the image processing system is equipped with a face image recognition system, which receives the facial video data from the visual acquisition system and The video data is converted into a video file stream; the face image recognition system rea...
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The invention discloses a construction machinery operator fatigue operation detection system based on machine vision. The construction machinery operator fatigue operation detection system comprises avision acquisition system, an image processing system and a fatigue index evaluation system; the visual acquisition system acquires face video data of an operator; the image processing system receives the face video data and converts the face video data into a video file stream, circularly reading each frame of image in the video file stream, extracting facial organ characteristics and sending the facial organ characteristics to a fatigue index evaluation system; the fatigue index evaluation system obtains action parameters of facial organs from the continuous facial organ feature map, sets athreshold value for each action parameter to perform fatigue degree evaluation, sets a corresponding weight according to the association degree of the action parameters and the fatigue state, and combines the fatigue degree evaluation index corresponding to each action parameter with the weight to obtain comprehensive indexes of fatigue state. The invention further discloses a construction machinery operator fatigue operation detection method based on the machine vision. The change trend of the fatigue state of the detection object under different situations can be accurately reflected.
Description
technical field [0001] The invention relates to a method for detecting fatigue work of construction machine operators, in particular to a system and method for detecting fatigue work of construction machine operators based on machine vision. Background technique [0002] The construction industry has always been one of the high-risk industries. The application of various mechanical equipment in construction projects is becoming more and more common, such as cranes, tower cranes, pump trucks, loaders, etc. The widespread application of construction machinery has brought many safety problems while improving the production efficiency of the construction industry. Therefore, building construction safety depends to a large extent on the safety management of construction machinery. [0003] The safety management of construction machinery can be divided into two parts: the safety maintenance of the machinery itself and the safety operation of related personnel. The safety manage...
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IPC IPC(8): G06K9/00G08B21/06
CPCG08B21/06G06V40/161G06V40/171G06V40/20
Inventor 崔兵张金月刘相池
Owner TIANJIN UNIV