A flash fusion frequency detection device for objective measurement of human fatigue state

Abstract

The application provides a flash fusion frequency detection device for objective measurement of human fatigue state, which at least comprises: the flash fusion frequency detection device (1) is integrated with a power line, a flash device (2) arranged on the surface of the flash fusion frequency detection device (1), and a detection result selection device (3) internally integrated with a flash frequency control module, a communication module, a storage module, a data processing module and a fatigue judgment module, and the fatigue condition of a detected person is determined through the judgment process of the data processing module and the fatigue judgment module under different conditions. The device can effectively prevent the subjective cheating behavior of the testee when detecting the flash fusion frequency of the human body, can finely manage the detection process, and can effectively reduce the deviation of the detection result caused by the misoperation of the detected person.

Description

Technical fields:

[0001] This invention belongs to the field of data monitoring, and in particular relates to a flash fusion frequency detection device for objective measurement of human fatigue state. Background technology:

[0002] Flicker fusion frequency (FFF) is a physiological term introduced in 1989. It refers to the subjective visual afterimage experienced when a person looks at a light source or a bright object and then closes their eyes. This afterimage is similar in size and shape to the light source. When the flicker frequency increases to a certain level, repeated flashes of light will cause a subjective perception of continuous light (i.e., the light source no longer appears to flicker). This phenomenon is called fusion. The lowest frequency that can induce flicker fusion is called the flicker fusion frequency, also known as the critical fusion frequency.

[0003] Numerous studies have shown that flash fusion frequency can sensitively characterize human fatigue. As fatigue levels increase, the critical fusion frequency tends to decrease. Therefore, in practice, a flash fusion frequency meter is a commonly used device for detecting human fatigue.

[0004] The flicker fusion frequency of a normal, awake person is generally between 28 and 42 Hz. However, current mainstream flicker fusion frequency meters obtain the critical fusion frequency by having the subject gradually adjust the flicker frequency of the light source until it reaches their "perceived" critical frequency. The drawback of this method is that subjects can easily cheat. For example, a normal person can correctly distinguish a 30 Hz flicker when not fatigued, but when fatigued, the subject can no longer distinguish a 30 Hz flicker, yet they can still claim to "distinguish" the flicker to mask their fatigue. As a result, the reliability of the test results is greatly reduced.

[0005] The device involved in this invention patent can effectively prevent subjective cheating behavior of subjects when detecting human flash fusion frequency, making the detection results more realistic and objective, and has better adaptability in practical applications. At the same time, it can perform refined management of the detection process and balance the load of each module in the device, while effectively reducing the possibility of deviation in detection results due to human error. Summary of the Invention

[0006] This invention provides a flash fusion frequency detection device for objectively measuring human fatigue, comprising at least: a power cord, a flashing device placed on the surface of the flash fusion frequency detection device, and a detection result selection device. Internally, it integrates a flash frequency control module, a communication module, a storage module, a data processing module, and a fatigue judgment module. Through the judgment process under different conditions by the data processing module and the fatigue judgment module, the fatigue status of the tested person is determined. This device can effectively prevent subjective cheating behavior by the test subject when detecting human flash fusion frequency, enables refined management of the detection process, and effectively reduces the possibility of deviations in detection results due to operator error.

[0007] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0008] This invention provides a flash fusion frequency detection device for objective measurement of human fatigue state, comprising at least: a power cord integrated into the flash fusion frequency detection device, a flash device placed on the surface of the flash fusion frequency detection device, and a detection result selection device;

[0009] The detection result selection device is equipped with two buttons, namely a "flash" button and a "no flash" button, and is wiredly connected to the flash fusion frequency detection device;

[0010] The flash fusion frequency detection device integrates a flash frequency control module, a communication module, a storage module, a data processing module, and a fatigue judgment module.

[0011] The storage module stores six different flashing frequencies: 20Hz, 23Hz, 25Hz, 42Hz, 45Hz, and 48Hz.

[0012] The flash frequency control module requests a random frequency f from the storage module. a Using the received random frequency f a The flashing device is controlled according to the random frequency f a Flashing;

[0013] The person being tested selects either "flashing" or "no flashing" on the test result selection device.

[0014] The fatigue judgment module is based on the single selection result and the random frequency f corresponding to the selection result. a To determine whether the result selected by the person being tested is an objective judgment result;

[0015] The flash fusion frequency detection device sends the judgment result to the handheld terminal of the on-site staff based on the communication module.

[0016] Furthermore, a power switch is provided on the outer surface of the flash fusion frequency detection device to control whether the flash fusion frequency detection device is powered on.

[0017] Furthermore, the six different flashing frequencies can also be three distinct frequencies that are not less than 20Hz and not greater than 27Hz, denoted as X1, X2, and X3.

[0018] And three distinct frequencies at a frequency not less than 29 and not greater than 41 Hz, denoted as X4, X5, and X6.

[0019] Furthermore, the data processing module continuously judges multiple selection results transmitted by the detection result selection device during the continuous flashing of the flashing device, and after determining the final judgment result, sends the final judgment result to the fatigue judgment module.

[0020] Furthermore, the duration of a single random frequency test for the person being tested is T.

[0021] Furthermore, the data received by the data processing module is from multiple consecutive random frequency tests triggered by the person being tested, with each random frequency test lasting for a duration of T.

[0022] Furthermore, at the start of the test, the random frequency X of the first test... n During the duration T, the selection result made by the person being tested on the test result selection device is transmitted to the fatigue judgment module;

[0023] If the random frequency of the first test is 3≧n≧1, and the person being tested selects "blinking", then the test result is deemed valid.

[0024] Furthermore, if the random frequency of the first test is 6≧n≧4, and the person being tested selects "flickering", then it is determined that the person being tested is fatigued, and the testing process ends.

[0025] Furthermore, if the person being tested selects "no flashing" during the initial test, a data analysis command is sent to both the data processing module and the test result selection device. The test result selection device then sends the person being tested's selection result and the time point corresponding to each selection result to the data processing module.

[0026] Furthermore, the flash frequency control module sends the test random frequency value and the start and end times of the test random frequency to the data processing module.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. By setting the flash frequency control module, the requested flash frequency can be queried, which makes it easier to determine whether the person being tested is concealing the actual situation. Through the data processing module and fatigue judgment module, different processes are processed for different detection flash frequencies and detection quantities, which makes it easier to track the detection process and reduce the workload of a single module.

[0029] 2. By using a data processing module to determine whether the person being tested is fatigued and whether they are concealing information when multiple testing frequencies are executed sequentially, and by using a fatigue judgment module to determine whether the person being tested is fatigued and whether the data processing module needs to be activated for a single random frequency, the testing process can be managed in a refined manner through a two-level judgment approach, and the fatigue status of the person being tested and whether they are concealing fatigue can be determined more accurately.

[0030] 3. By setting steps S5 and S6-S14, the randomness of the detection can be improved, and the detection of the person being tested can be further prevented from concealing their fatigue status.

[0031] 4. After the initial assessment by the fatigue judgment module, the personnel are assessed a second time using 10 different detection frequencies over 10 hours. If the assessment fails to determine the personnel's condition, a third assessment is conducted. The personnel are then assessed using X1, X6, X2 or X1, X2, X3. This approach effectively reduces errors in the assessment results caused by the personnel's misoperation.

[0032] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above description and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are provided and described in detail below. Attached Figure Description

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0034] Figure 1 This is a schematic diagram of a flash fusion frequency detection device for objectively measuring human fatigue state according to the present invention. Detailed Implementation

[0035] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0036] See appendix Figure 1 The present invention provides a flash fusion frequency detection device for objective measurement of human fatigue state, comprising at least: the flash fusion frequency detection device 1 integrating a power cord, a flash device 2 placed on the surface of the flash fusion frequency detection device 1, and a detection result selection device 3.

[0037] The detection result selection device 3 is equipped with two buttons, namely a "flash" button and a "no flash" button, and is wiredly connected to the flash fusion frequency detection device 1.

[0038] The flash fusion frequency detection device 1 integrates a flash frequency control module, a communication module, a storage module, a data processing module, and a fatigue judgment module.

[0039] The storage module stores six different flashing frequencies: 20Hz, 23Hz, 25Hz, 42Hz, 45Hz, and 48Hz.

[0040] The flash frequency control module requests a random frequency f from the storage module. a Using the received random frequency f a The flashing device 2 is controlled according to the random frequency f. a Flashing;

[0041] The person being tested selects "flash" or "no flash" on the test result selection device 3;

[0042] The fatigue judgment module is based on the single selection result and the random frequency f corresponding to the selection result. a To determine whether the result selected by the person being tested is an objective judgment result;

[0043] The flash fusion frequency detection device 1 sends the judgment result to the handheld terminal of the on-site staff based on the communication module.

[0044] Furthermore, a power switch is also provided on the outer surface of the flash fusion frequency detection device 1 to control whether the flash fusion frequency detection device 1 is powered on.

[0045] Furthermore, the six different flashing frequencies can also be three distinct frequencies that are not less than 20Hz and not greater than 27Hz, denoted as X1, X2, and X3.

[0046] And three distinct frequencies at a frequency not less than 29 and not greater than 41 Hz, denoted as X4, X5, and X6.

[0047] Furthermore, the data processing module continuously judges the multiple selection results transmitted by the detection result selection device 3 during the continuous flashing of the flashing device 2, and after determining the final judgment result, sends the final judgment result to the fatigue judgment module.

[0048] Furthermore, the duration of a single random frequency test for the person being tested is T.

[0049] Furthermore, the data received by the data processing module is from multiple consecutive random frequency tests triggered by the person being tested, with each random frequency test lasting for a duration of T.

[0050] Furthermore, at the start of the test, the random frequency X of the first test... n During the duration T, the selection result of the person being tested on the test result selection device 3 is transmitted to the fatigue judgment module;

[0051] If the random frequency of the first test is 3≧n≧1, and the person being tested selects "blinking", then the test is deemed valid, and step S6 or step S10 is executed.

[0052] Furthermore, if the random frequency of the first test is 6≧n≧4, and the person being tested selects "flickering", then it is determined that the person being tested is fatigued, and the testing process ends.

[0053] Furthermore, if the person being tested selects "no flashing" during the initial test, a data analysis command is sent to both the data processing module and the test result selection device 3. The test result selection device 3 then sends the person being tested's selection result and the time point corresponding to each selection result to the data processing module.

[0054] Furthermore, the flash frequency control module sends the test random frequency value and the start and end times of the test random frequency to the data processing module.

[0055] When the data processing module is started, and the data being processed by the data processing module is 10T in duration, there are a total of 10 random frequencies X in the order of their occurrence. Q =[X q1 X q2, ..., X q10 ];

[0056] Query X Q If there are 2 to 8 elements belonging to [X1, X2, X3], then the detection result of the data processing module is valid in this instance.

[0057] S1. Identify the duration segments [A1, A2, ..., A...] of the elements belonging to [X1, X2, X3]. m ]; where 8≧m≧2; the respective duration segments form a time period set A=[A1、A2、···、A m ];

[0058] S2. Determine the multiple results of "flashing" selected by the person being tested;

[0059] S3. Determine the time point corresponding to each of the multiple results;

[0060] S4. Determine whether the time points corresponding to each of the multiple results are all within the time range covered by the time period set A. If so, determine that the person being tested is not fatigued.

[0061] If not, then execute S5;

[0062] S5. Determine that there may be errors in the test results, and proceed with S6 or S10;

[0063] If X p If there are fewer than 2 elements belonging to the range [X1, X2, X3], then execute S6-S9:

[0064] S6. The data processing module sends control signals requesting X1, X2, and X3 in sequence to the flash frequency control module;

[0065] S7. The flash frequency control module requests X1, X2, and X3 sequentially from the storage module, and controls the flashing device 2 to flash sequentially according to X1, X2, and X3, wherein the duration of the flashing based on X1, X2, and X3 is T.

[0066] S8. The data processing module receives the result selected by the person being tested again;

[0067] S9. If the results selected by the person being tested in S8 are all "flickering", and "flickering" is selected at least twice, then the result is valid, and the person being tested is determined to be not fatigued;

[0068] Otherwise, it is assumed that the person being tested has concealed information, and the test results will be sent to the staff's handheld terminal via the communication module.

[0069] If X Q If there are more than 8 elements belonging to [X1, X2, X3], then execute S10-S14:

[0070] S10. The data processing module sends control signals requesting X1, X6, and X2 sequentially to the flash frequency control module;

[0071] S11. The flash frequency control module requests X1, X6, and X2 sequentially from the storage module, and controls the flashing device 2 to flash sequentially according to X1, X6, and X2, wherein the duration of the flashing based on X1, X6, and X2 is T.

[0072] S12. The data processing module receives the result selected by the person being tested again;

[0073] S13. Determine the multiple results of "no flash" selected by the person being tested;

[0074] S14. Determine the time point corresponding to each of the multiple "no flash" results selected by the tested personnel;

[0075] S14. Determine whether the time points corresponding to the "no flash" results selected by the multiple tested personnel are all within the time period corresponding to the frequency X6. If so, determine that the tested personnel are not fatigued; otherwise, consider that the tested personnel have concealed their activities and send the test results to the staff's handheld terminal based on the communication module.

[0076] The beneficial effects of this invention are as follows:

[0077] 1. By setting the flash frequency control module, the requested flash frequency can be queried, which makes it easier to determine whether the person being tested is concealing the actual situation. Through the data processing module and fatigue judgment module, different processes are processed for different detection flash frequencies and detection quantities, which makes it easier to track the detection process and reduce the workload of a single module.

[0078] 2. By using a data processing module to determine whether the person being tested is fatigued and whether they are concealing information when multiple testing frequencies are executed sequentially, and by using a fatigue judgment module to determine whether the person being tested is fatigued and whether the data processing module needs to be activated for a single random frequency, the testing process can be managed in a refined manner through a two-level judgment approach, and the fatigue status of the person being tested and whether they are concealing fatigue can be determined more accurately.

[0079] 3. By setting steps S5 and S6-S14, the randomness of the detection can be improved, and the detection of the person being tested can be further prevented from concealing their fatigue status.

[0080] 4. After the initial assessment by the fatigue judgment module, the personnel are assessed a second time using 10 different detection frequencies over 10 hours. If the assessment fails to determine the personnel's condition, a third assessment is conducted. The personnel are then assessed using X1, X6, X2 or X1, X2, X3. This approach effectively reduces errors in the assessment results caused by the personnel's misoperation.

[0081] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A flash fusion frequency detection device for objectively measuring human fatigue state, characterized in that, The flash fusion frequency detection device (1) integrates a power cord, a flash device (2) placed on the surface of the flash fusion frequency detection device (1), and a detection result selection device (3); The detection result selection device (3) is equipped with two buttons, namely a "flash" button and a "no flash" button, and is wiredly connected to the flash fusion frequency detection device (1); The flash fusion frequency detection device (1) integrates a flash frequency control module, a communication module, a storage module, a data processing module, and a fatigue judgment module. The storage module stores 6 different flashing frequencies, namely 3 distinct frequencies at no less than 20Hz and no more than 27Hz, denoted as X1, X2, and X3; and 3 distinct frequencies at no less than 29Hz and no more than 41Hz, denoted as X4, X5, and X6. The flash frequency control module requests a random frequency f from the storage module. a Using the received random frequency f a The flashing device (2) is controlled according to the random frequency f. a Flashing; The person being tested selects "flash" or "no flash" on the test result selection device (3); The fatigue judgment module is based on the single selection result and the random frequency f corresponding to the selection result. a To determine whether the result selected by the person being tested is an objective judgment result; The flash fusion frequency detection device (1) sends the judgment result to the handheld terminal of the on-site staff based on the communication module; The duration of a single random frequency test for the person being tested is T. The flash frequency control module sends the test random frequency value and the start and end times of the test random frequency to the data processing module. When the data processing module is started, and the data being processed by the data processing module is 10T in duration, there are a total of 10 random frequencies X in the order of their occurrence. Q =[X q1 X q2 , ..., X q10 ]; Query X Q If there are 2 to 8 elements belonging to [X1, X2, X3], then the detection result of the data processing module is valid for this time; and the following steps are performed: S1. Identify the duration segments [A1, A2, ..., A...] of the elements belonging to [X1, X2, X3]. m ]; where 8≧m≧2; the respective duration segments form a time period set A=[A1、A2、···、A m ]; S2. Determine the multiple results of "flickering" selected by the person being tested; S3. Determine the time point corresponding to each of the multiple results; S4. Determine whether the time points corresponding to each of the multiple results are all within the time range covered by the time period set A. If yes, determine that the person being tested is not fatigued; otherwise, proceed to S5. S5. Determine that there may be errors in the test results, and proceed with S6 or S10; If X Q If there are fewer than 2 elements belonging to the range [X1, X2, X3], then execute S6-S9: S6. The data processing module sends control signals requesting X1, X2, and X3 in sequence to the flash frequency control module; S7. The flash frequency control module requests X1, X2, and X3 sequentially from the storage module and controls the flashing device (2) to flash sequentially according to X1, X2, and X3, wherein the duration of flashing based on X1, X2, and X3 is T. S8. The data processing module receives the result selected by the person being tested again; S9. If the results selected by the person being tested in S8 are all "flickering", and "flickering" is selected at least twice, then the result is valid, and the person being tested is determined to be not fatigued; Otherwise, it will be considered that the person being tested has concealed information, and the test results will be sent to the staff's handheld terminal via the communication module; If X Q If there are more than 8 elements belonging to [X1, X2, X3], then execute S10-S15: S10. The data processing module sends control signals requesting X1, X6, and X2 sequentially to the flash frequency control module; S11. The flash frequency control module requests X1, X6, and X2 sequentially from the storage module and controls the flashing device (2) to flash sequentially according to X1, X6, and X2, wherein the duration of flashing based on X1, X6, and X2 is T. S12. The data processing module receives the result selected by the person being tested again; S13. Determine the multiple results of "no flash" selected by the person being tested; S14. Determine the time point corresponding to each of the multiple "no flash" results selected by the tested personnel; S15. Determine whether the time points corresponding to the "no flash" results selected by the multiple tested personnel are all within the time period corresponding to frequency X6. If so, it is determined that the tested personnel are not fatigued; otherwise, it is considered that the tested personnel have concealed their activities, and the test results are sent to the staff's handheld terminal based on the communication module.

2. The flash fusion frequency detection device for objective measurement of human fatigue state according to claim 1, characterized in that: The outer surface of the flash fusion frequency detection device (1) is also provided with a power switch to control whether the flash fusion frequency detection device (1) is powered on.

3. The flash fusion frequency detection device for objective measurement of human fatigue state according to claim 1, characterized in that: The data processing module continuously judges multiple selection results transmitted by the detection result selection device (3) during the continuous flashing of the flashing device (2), and after determining the final judgment result, sends the final judgment result to the fatigue judgment module.

4. The flash fusion frequency detection device for objective measurement of human fatigue state according to claim 3, characterized in that: The data processing module receives the selection results when the person being tested triggers multiple consecutive random frequency tests, and the duration of each random frequency test is T.

5. The flash fusion frequency detection device for objective measurement of human fatigue state according to claim 4, characterized in that: At the start of the test, the random frequency X of the first test n During the duration T, the selection result of the person being tested on the test result selection device (3) is transmitted to the fatigue judgment module; If the random frequency of the first test is 3≧n≧1, and the person being tested selects "flash", then the test is deemed valid.

6. The flash fusion frequency detection device for objective measurement of human fatigue state according to claim 5, characterized in that: If the random frequency of the first test is 6≧n≧4, and the person being tested selects "flickering", then the person being tested is determined to be fatigued, and the testing process ends.

7. The flash fusion frequency detection device for objective measurement of human fatigue state according to claim 6, characterized in that: If the person being tested selects "no flashing" during the first test, a data analysis instruction is sent to both the data processing module and the test result selection device (3). The test result selection device (3) sends the selection result of the person being tested and the time point corresponding to each selection result to the data processing module.

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