CN107582079B - Visual alertness detection system - Google Patents
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- CN107582079B CN107582079B CN201710823041.4A CN201710823041A CN107582079B CN 107582079 B CN107582079 B CN 107582079B CN 201710823041 A CN201710823041 A CN 201710823041A CN 107582079 B CN107582079 B CN 107582079B
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Abstract
The invention discloses a visual alertness detection system, which comprises: a plurality of PDA handheld terminals having a data storage module, the PDA handheld terminals being configured to provide subjective scale tests and objective tests to a user to form visual alertness data; an analysis device configured to receive and analyze the visual alertness data; a wireless communication module configured to enable visual alert data transfer between the PDA handheld terminal and the analysis device; and a secure communication unit configured to enable secure transmission and management of the visual alertness data. The invention supports the test of the PDA and the computer terminal, can realize the online and offline visual alertness evaluation of a plurality of persons, and the calibration of the response speed of the PDA handheld terminal and the computer terminal, and effectively eliminates the system error.
Description
Technical Field
The invention relates to the field of visual alertness detection. More particularly, the present invention relates to an alertness detection system.
Background
The visual alertness detection, i.e. PVT detection, is a standard test method for detecting the continuous attention and the reaction time of a subject to an optotype, and has the advantages of simple and convenient operation, small learning effect and high detection sensitivity to long-term awakening and sleep rhythm disorder. The PVT can better evaluate central fatigue, and can be used for evaluating the fatigue of related personnel with higher alertness requirements and evaluating the application effect of fatigue health protection measures in related industries and related operations. The conventional PVT detector has the problems of large volume, single test mode, low test speed, incapability of meeting the requirements of rapid detection and individual soldier/group detection and the like.
At present, an individual hand-held touch screen type visual alertness detector (PDA-PVT) suitable for field application is widely applied abroad, and the technical level of real-time monitoring and evaluation of the man-machine integrated sleep arousal and cognitive function of an individual is further improved. The existing PDA-PVT test equipment has the problems of single test mode, no support for offline test and the like, and in addition, due to the limitation of hardware characteristics and an operation system operation mechanism, a touch screen has touch delay of about 50-200ms, so that the PVT test result of a PDA terminal is inconsistent with the test result of a PVT experiment analysis system (workstation), and certain deviation exists compared with the classical method.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
The invention also aims to provide a visual alertness detection system which supports the test of a PDA and a computer terminal, can realize the online and offline visual alertness evaluation of a plurality of persons and the response speed calibration of the PDA handheld terminal and the computer terminal, and effectively eliminates system errors.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a visual alertness detection system comprising:
a plurality of PDA handheld terminals having a data storage module, the PDA handheld terminals being configured to provide subjective scale tests and objective tests to a user to form visual alertness data;
an analysis device configured to receive and analyze the visual alertness data;
a wireless communication module configured to enable visual alert data transfer between the PDA handheld terminal and the analysis device; and
a secure communication unit configured to enable secure transmission and management of the visual alertness data.
Preferably, the touch screen delay test device further comprises:
the delay test APP is installed on the PDA handheld terminal, responds to a touch signal of the PDA handheld terminal and converts the touch signal into light intensity change displayed on a screen;
a pressure sensor configured to convert the touch signal into a pressure signal;
a photosensitive sensor configured to collect the light intensity variation signal;
an Arduino test platform receiving the pressure signal and converting it into a camera start signal, and the Arduino test platform receiving the light intensity variation signal and converting it into a camera stop signal;
a camera trigger detector that triggers the camera upon receiving the camera start signal and the camera stop signal, and the camera trigger detector further transmits a camera start acquisition time, a camera end acquisition time, and an image obtained within an acquisition time period to the Arduino test platform.
The Arduino test platform can accurately calculate the time difference between the pressure trigger signal and the photosensitive trigger signal by starting to collect and stopping the time of collecting the image frames obtained in the period and matching with the sampling rate of the high-speed camera. This time difference represents the delay time between the Android system processing screen touch and the screen response.
Preferably, wherein the subjective scale test comprises a mood state POMS scale test and a fatigue rating scale test.
Preferably, the plurality of reaction tests are reaction click tests of a user on a dot, a letter or a symbol appearing at any position on the screen of the PDA handheld terminal within a limited time, and at least one of reaction speed and task accuracy is formed.
In the visual alertness test of the testee, the reliability of the evaluation result can be improved by matching the reaction test with the subjective scale test.
Preferably, the defined time is 3-10 min.
Preferably, the secure communication unit adopts one or more security measures of physical isolation of a wide area network, hidden SSID, wireless advanced encryption authentication, data packet encryption, independent binding of a client server and secondary code matching, so as to fully ensure the security and accuracy of data in the whole transmission process.
Preferably, the PDA handheld terminal and the analysis device are each provided with a permission management module, and the permission management module is configured to assign at least one operation permission to each inquiry user, so as to achieve the purpose of guaranteeing the privacy of the testee and the security of the internal data.
Preferably, the analysis device further has a data output module configured to generate a detection report and output the detection report to a printing device.
Preferably, the analysis device is further configured to provide the user with a subjective scale test and an objective test, forming the visual alertness data.
Preferably, the PDA handheld terminal is further provided with a data analysis module to form a data curve graph and give a visual alertness test analysis result, and the test analysis results of the plurality of PDA handheld terminals are transmitted to the analysis device for comprehensive analysis.
The invention at least comprises the following beneficial effects:
(1) the plurality of PDA handheld terminals have a data storage function in an off-line mode, and the plurality of PDA handheld terminals and the analysis device can be in communication connection through a wireless network, so that on-line and off-line visual alertness evaluation of a plurality of persons can be realized;
(2) the invention supports the test of the PDA and the computer terminal, and the setting of the delay test device can realize the correction of the response delay of the PDA handheld terminal screen, improve the consistency and the accuracy of the response speed calibration of the PDA handheld terminal and the computer terminal, and effectively eliminate the system error;
(3) the invention is mainly used for detecting visual alertness, evaluating the central fatigue degree of special work types and the like through PVT experiments, evaluating the application effect of fatigue health protection measures for related work, and further improving the real-time monitoring and evaluation technical level of man-machine integrated sleep arousal and cognitive functions.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a visual alertness detection system according to the invention;
FIG. 2 is a schematic diagram of a touch screen delay test apparatus according to another embodiment of the present invention;
FIG. 3 is a flowchart of the operation of a PDA terminal in another embodiment of the present invention;
FIG. 4 is a system block diagram of a PDA terminal in another example of the present invention;
FIG. 5 is a flow chart of the operation of an analysis device according to another embodiment of the present invention;
FIG. 6 is a system block diagram of an analysis device in another example of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
FIG. 1 shows an implementation form according to the invention, which comprises
A plurality of PDA handheld terminals having a data storage module, the PDA handheld terminals being configured to provide subjective scale tests and objective tests to a user to form visual alertness data;
an analysis device configured to receive and analyze the visual alertness data;
a wireless communication module configured to enable visual alert data transfer between the PDA handheld terminal and the analysis device; and
a secure communication unit configured to enable secure transmission and management of the visual alertness data.
In the technical scheme, the visual alertness detector mainly comprises a plurality of PDA terminals and a PVT experiment analysis system (workstation for short), wherein the PDA terminals provide PVT test functions and data storage functions, and the PVT experiment analysis system has the functions of data storage, data analysis and test result printing output. In this example, the server side serves as a PVT experimental workstation on one hand and a data convergence end point of the PDA client side on the other hand, and summarizes all experimental data acquired by the PDA side and performs analysis processing as required.
In another example, a touch screen latency test device is also included having:
the delay test APP is installed on the PDA handheld terminal, responds to a touch signal of the PDA handheld terminal and converts the touch signal into light intensity change displayed on a screen;
a pressure sensor configured to convert the touch signal into a pressure signal;
a photosensitive sensor configured to collect the light intensity variation signal;
an Arduino test platform receiving the pressure signal and converting it into a camera start signal, and the Arduino test platform receiving the light intensity variation signal and converting it into a camera stop signal;
a camera trigger detector that triggers the camera upon receiving the camera start signal and the camera stop signal, and the camera trigger detector further transmits a camera start acquisition time, a camera end acquisition time, and an image obtained within an acquisition time period to the Arduino test platform.
In this example, the frame rate of the camera is 240fbs, but is not limited thereto. Subsequently, the frame rate of the camera is increased, the delay of millisecond level is accurately measured, and then the minimum response time (MART) of the application, namely the fastest response of the mobile phone touch screen which can be predicted, can be measured
In another example, the subjective scale test includes a mood state POMS scale test and a fatigue rating scale test. Also, this manner is merely an illustration of a preferred example, but not limited thereto. In the implementation of the invention, different aspects of subjective scale testing can be implemented according to the requirements of users.
In another example, the plurality of reaction tests are reaction click tests of a user to a dot, letter or symbol appearing at any position on the screen of the PDA handheld terminal within a limited time, and at least one of reaction speed and task accuracy is formed.
In this example, the visual alertness detector PVT test provides a reaction click test with three patterns of dots, letters and symbols as the stimulus target, each providing three test times, including 3min, 5min, 10min testing. The common test mode is a real object reaction click experiment, and the experiment time is 3 min. Multiple experimental modes meet multiple test protocol requirements.
The dot reaction click experiment scheme is characterized in that stimulation targets select dots (black dots, red dots and 4mm in diameter) to be displayed at the center of a screen at random time intervals in a certain range, a tested person gives click reaction, and a system records test data, draws a data curve graph and gives an alertness test analysis result.
According to the letter reaction click experiment scheme, stimulation target letters (26 letters appear randomly, and the width and the height are 4mm) are displayed in the center of a screen at random time intervals in a certain range, a tested person gives a click reaction, and a system records test data, draws a data curve graph and gives an alertness test analysis result.
The symbol reaction clicks the experimental scheme, stimulate the target symbol (five kinds of traffic signs symbols appear at random, width and height 4mm) to display in the screen centre with certain range random time interval, the testee gives and clicks and reacts, the system records the test data, draws the data curve chart, and give and alertness tests the analysis result.
Also, this manner is merely an illustration of a preferred example, but not limited thereto. In the implementation of the invention, different modes of the reaction click test can be implemented according to the requirements of users.
In another example, the secure communication unit adopts one or more security measures of wide area network physical isolation, hidden SSID, wireless advanced encryption authentication, data packet encryption, client-server independent binding and secondary code matching, so as to fully ensure the security and accuracy of data in the whole transmission process.
In another example, the PDA handheld terminal and the analysis device are respectively provided with a right management module, and the right management module is configured to assign at least one operation right to each inquiry user.
In this example, the testee mainly performs the PVT experiment, then the system stores the experiment data, the experiment manager authorizes (through system setting), and the testee can view the instant experiment result analysis. After the experimental data are stored in the database, an experimental manager can analyze the multiple experimental results of the tested person by using the software and can output an experimental report. The experiment manager can also manage the data formed by the software and output and print the experiment report. User distribution management can be carried out on the hand-held/portable equipment terminal, and the testing authority of the PDA terminal is set. The maintenance engineer mainly performs system inspection and system maintenance work.
Referring to fig. 3, in the authority management of the PDA handheld terminal, a user (a tested person, an experiment manager) enters an APP system through registration or direct login, the tested person can perform PVT experiment, submit scores, upload scores online, and check experiment data analysis if the tested person has authority; the experiment administrator can perform user management, system setup (authorization), simple data management and communication module data management.
Referring to fig. 5, in the authority management of the system analysis device, a user (a testee, an experiment manager, or a maintenance engineer) enters the software system by registering or directly logging in, the testee can perform a PVT experiment and submit scores, and if the user has authority, the user can view the analysis of experiment data; the experiment manager can perform data management, user management and system setting (printer setting and authorization), and the data management comprises client and server communication module management; a maintenance engineer may perform system maintenance.
Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, different modes of the system management authority can be realized according to the requirements of users.
In another example, referring to fig. 5 and 6, the analysis device further has a data output module configured to generate a detection report and output the detection report to a printing device.
In another example, referring to fig. 5 and 6, the analysis device may be further configured to provide subjective scale tests and objective tests to the user to form visual alertness data.
In another example, referring to fig. 3 and 4, the PDA handheld terminal is further provided with a data analysis module, which forms a data graph and provides a visual alertness test analysis result, and the test analysis results of a plurality of PDA handheld terminals are transmitted to the analysis device for comprehensive analysis.
In another example, referring to fig. 3 and 4, the PDA terminal has the following functions and features:
1) user information management, including login/registration, inquiry and deletion of a tested member; logging in by an experiment manager and logging in by a maintenance engineer;
2) PVT experiment detection comprises an experiment mode and experiment time setting, and the consistency of the experiment result calibrated by the touch screen delay jitter compensation module and the workstation experiment is realized;
3) subjective scale tests including a mood state POMS test and a fatigue rating scale test;
4) data storage in an offline mode;
5) uploading data in an online mode, uploading the encrypted data to a workstation through network communication, deleting the data after uploading is successful, and keeping basic information of a tested member;
6) data encryption is carried out to ensure data security;
7) data communication is carried out, so that data are safely and stably uploaded;
8) drawing data and curves of experimental results;
9) data management, namely traversing and deleting the data which are not uploaded;
10) the client communicates with the server for management;
11) the system is set, and the authorized tested person can check experimental analysis data;
12) system log, record operation state, fault and other information
In another example, referring to fig. 5 and 6, the PVT experimental analysis system has the following functions and features:
1) user information management, including adding, inquiring, deleting and modifying by the tested personnel; logging in/registering, inquiring, deleting and modifying by an experiment administrator;
2) PVT experiment detection comprises experiment mode selection and image reaction click test, and the experiment modes are divided into 3-minute, 5-minute and 10-minute tests;
3) subjective scale tests including a mood state POMS test and a fatigue rating scale test;
4) receiving data in an online mode, receiving the data through network communication, decrypting the data, storing the decrypted data in the local, and associating the decrypted data to a database for later analysis and processing;
6) data decryption;
7) data communication is carried out, so that safe and stable data receiving is guaranteed;
8) displaying data and images of experimental results;
9) data management, analysis and deletion of detection data, generation of a detection report and printout;
10) and the system is arranged, and an authorized tested person can view experimental analysis data.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the visual alertness detection system of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (9)
1. A visual alertness detection system, comprising:
a plurality of PDA handheld terminals having a data storage module, the PDA handheld terminals being configured to provide subjective scale tests and objective tests to a user to form visual alertness data;
an analysis device configured to receive and analyze the visual alertness data;
a wireless communication module configured to enable visual alert data transfer between the PDA handheld terminal and the analysis device; and
a secure communication unit configured to enable secure transmission and management of the visual alertness data;
a touch screen delay test device having:
the delay test APP is installed on the PDA handheld terminal, responds to a touch signal of the PDA handheld terminal and converts the touch signal into light intensity change displayed on a screen;
a pressure sensor configured to convert the touch signal into a pressure signal;
a photosensitive sensor configured to collect the light intensity variation signal;
an Arduino test platform receiving the pressure signal and converting it into a camera start signal, and the Arduino test platform receiving the light intensity variation signal and converting it into a camera stop signal;
a camera trigger detector that triggers the camera upon receiving the camera start signal and the camera stop signal, and the camera trigger detector further transmits a camera start acquisition time, a camera end acquisition time, and an image obtained within an acquisition time period to the Arduino test platform.
2. A visual alertness detection system as claimed in claim 1 wherein the subjective scale tests include a mood state POMS scale test and a fatigue rating scale test.
3. A visual alertness system as claimed in claim 1 wherein the objective test is a user's reaction click test of dots, letters or symbols appearing anywhere on the PDA handset screen within a defined time and developing at least one of reaction speed and task accuracy.
4. A visual alertness detection system as claimed in claim 3 in which the limited time is 3-10 min.
5. The visual alertness detection system as claimed in claim 1 wherein said secure communications unit employs one or more of wide area network physical isolation, hidden SSID, wireless advanced encryption authentication, packet encryption and client server independent binding, secondary code pairing.
6. The visual alertness detection system as claimed in claim 1 wherein the PDA handset and the analysis device are each provided with a rights management module configured to assign at least one operating right per querying user.
7. A visual alertness detection system as claimed in claim 1 wherein the analysis means further has a data output module configured to generate a detection report and to output the detection report to a printing means.
8. A visual alertness system as claimed in claim 1 wherein the analysis means is further configurable to provide subjective scale tests and objective tests to the user to form visual alertness data.
9. A visual alertness detection system as claimed in claim 1 wherein the PDA hand held terminal is further provided with a data analysis module.
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| CN109833048B (en) * | 2019-01-23 | 2021-11-05 | 中国民航大学 | Alertness measuring method based on psychomotor ability |
| CN109858814A (en) * | 2019-02-01 | 2019-06-07 | 中国民用航空总局第二研究所 | Degree of fatigue cognitive approach and air traffic control risk analysis method |
| CN111913618B (en) * | 2020-07-08 | 2022-04-19 | 核动力运行研究所 | Detection method and device |
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| NZ630770A (en) * | 2013-10-09 | 2016-03-31 | Resmed Sensor Technologies Ltd | Fatigue monitoring and management system |
| WO2016061351A1 (en) * | 2014-10-15 | 2016-04-21 | Dan Atlas | Wearable device for operator degraded performance notification with location-based remedial response |
| CN106137181A (en) * | 2015-04-13 | 2016-11-23 | 上海帝仪科技有限公司 | For obtaining the system of the fatigue characteristic of user, method and apparatus |
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