CN105919606A - Equipment and method for rapidly and conveniently detecting operation fatigue - Google Patents
Equipment and method for rapidly and conveniently detecting operation fatigue Download PDFInfo
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- CN105919606A CN105919606A CN201610504623.1A CN201610504623A CN105919606A CN 105919606 A CN105919606 A CN 105919606A CN 201610504623 A CN201610504623 A CN 201610504623A CN 105919606 A CN105919606 A CN 105919606A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
- A61B5/161—Flicker fusion testing
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
- A61B5/162—Testing reaction times
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
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Abstract
The invention relates to equipment and method for rapidly and conveniently detecting operation fatigue and belongs to the field of detection of operation fatigue. The equipment comprises an eye shield, a camera bellows, an operation device, an optical system and a sighting target display control system; the optical system and the sighting target display control system are mounted inside the camera bellows; the operation device is connected with the sighting target display control system; a detected person observes the inside of the camera bellows by the eye shield, sees sighting targets with different frequencies, which are output by the sighting target display control system, by the optical system and responds to the identified sighting targets by the operation device, and analysis detection software in the sighting target display control system receives a signal sent out by the operation device, calculates out and displaying frequencies of sighting targets displayed by the sighting target display control system in a next detection period, analyzes fatigue of the detected person after detection is finished, and sends a final detection result to external storage equipment. According to the equipment and method disclosed by the invention, objectivity and accuracy of acquiring optic nerve behavior function data are improved. In an actual application scene, detection parameters are set according to requirements of accuracy and detection duration.
Description
Technical field
The invention belongs to work fatigue detection field, be the equipment of a kind of rapid and convenient detection work fatigue degree
And method.
Background technology
Response time is that body accepted to stimulate to aitiogenic interval time, it and corticocerebral function
Situation has close relationship.Time tired, corticocerebral function reduction, conditioning performance is also by shadow
Ringing, show as extending during reaction, reaction mistake increases.There are some researches show the mental tired of continuous firing load
Finding in labor, increasing along with workload time during reaction, difference has statistical significance.
The relatively low Photic Stimulation of one chopper frequency, when eye, can produce a bright dark flickering
Feel, when the number of times of flash of light per second increases to a certain degree, human eye the most no longer feel flash of light and feel be
The most stable continuous light, this phenomenon is referred to as the fusion of flash of light.Flicker has just reached photostimulation when merging
Chopper frequency is referred to as critical radar cross section.Critical radar cross section value can effectively react one
The psychological function state of people and the level of activation of brain, along with the intensification of people's degree of fatigue, human eye is to light
Sensitivity declines, and critical radar cross section value reduces, and therefore critical radar cross section can conduct
The index of one reliable fatigue detecting.
The equipment being used for detecting critical radar cross section at present needs examinee oneself operation and judges, quilt
Inspection person regulates sighting target frequency, finds sighting target flicker and the critical point not flashed, first frequency is adjusted to bright spot steady
Fixed flicker, then needs to test examinee's regulation and stops when bright spot no longer flashes to just seeing, then will
Frequency is adjusted to bright spot and does not flashes, and then needs to test examinee and is adjusted to just to see when bright spot flashes
Stopping, measured records testing result after determining data with tester.This critical radar cross section
Detection has certain subjectivity, and the testing result therefore obtained can be affected by certain, it is impossible to objective
Pass judgment on operating personnel the most tired.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of rapid and convenient detection operation
The Apparatus and method for of fatigue strength, Testing index list when solving conventional flash fusion frequency instrument detection fatigue strength
One, the tired time length of detection and the shortcoming of objectivity difference, introduce the response time as fatigue strength detect another
One index, it is to avoid the index single detection error brought.
It is as follows that the present invention solves the technical scheme that technical problem used:
The equipment of a kind of rapid and convenient detection work fatigue degree, this equipment includes: eyeshield, camera bellows, operation
Device, optical system, sighting target display control program, described optical system and sighting target display control program peace
Being contained in inside camera bellows, operation device is connected with sighting target display control program；Examinee passes through eyeshield to camera bellows
Interior observation, sees the sighting target of sighting target display control program output different frequency, examinee by optical system
Being made a response, by operation device, the sighting target picked out, the analysis detection in sighting target display control program is soft
Part receive operation device send signal, calculate what next detection-phase sighting target display control program showed
Sighting target frequency also shows, detects and terminate the fatigue strength of post analysis examinee and final detection result data sent out
Deliver to External memory equipment.
The method of the equipment of a kind of rapid and convenient detection work fatigue degree, the method comprises the steps:
Step one: arrange n sighting target, the detection frequency range of sighting target is fLstepk~
fUstepk,fUstepk>fLstepk, the detection frequency interval of sighting target is △ fstepk, wherein n=(fUstepk-fLstepk)
÷△fstepk+ 1, k are detection-phase number, k >=1；
Step 2: during first stage detection, randomly selecting first sighting target, flicker frequency is set to fLstepk,
Randomly selecting second sighting target, flicker frequency is set to fLstepk+△fstepk... according to above rule, at random
Choosing (n-1)th sighting target, flicker frequency is set to fLstepk+△fstepk× (n-2), the n-th sighting target
Flicker frequency is set to fUstepk；Showing n sighting target, examinee makes after seeing flicker sighting target sequence number clearly simultaneously
Reaction, the frequency that the sighting target sequence number of reading is corresponding is the most then designated as just data, carries out next step detection；
Discontinuous then be designated as wrong data, termination detection；The highest flicker frequency that detection equipment record examinee sees
Rate and sighting target start the response time flashed to picking out flicker sighting target；
Step 3: reset the detection frequency range of sighting target and the detection frequency interval of sighting target, repeat to hold
Row step 2；
Step 4: when correct judgment m time or wrong m time, detection terminates；According to backstage record
The highest flicker frequency and sighting target that m time correct examinee sees start flicker to picking out flicker sighting target
Time, calculate average critical radar cross section and average reaction time；Above-mentioned two index and individual
In the case of non-fatigue, critical radar cross section and response time empirical data value are compared, and analyze tested
The degree of fatigue of person.
The invention has the beneficial effects as follows: the present invention passes through examinee on the basis of judging whether sighting target flashes
Introduce the order of sighting target and the detection in response time, overcome and test subjectivity in the past, randomness is big, refer to
Mark single shortcoming, be effectively improved objectivity and the accuracy of visual neurobehavioral function data acquisition.
During detection, sighting target flicker frequency randomly generates, and detection mode is carried out by random demand, effectively subtracts
Lack the study efficacy of examinee.Precision according to practical application and detection duration require to arrange detection
Frequency range, sighting target number and detection number of times.Detect analytical data by storage to data base, it is simple to enter one
Visual neurobehavioral function is analyzed by step, simultaneously fatigue to examinee from horizontal and vertical evaluation
Degree is analyzed.The optical system of the present invention uses Zigzag type structure, substantially reduces detection equipment
Volume, is distributed in uniformly discrete for the frequency values in detection frequency range on each sighting target in detection method,
It is gradually reduced detection frequency range by repeated detection, improves accuracy of detection.When this method shortens detection
Between, and during one-time detection, record critical radar cross section and response time two indices, from
And improve detection efficiency and accuracy.
Accompanying drawing explanation
The left diagram of structure of the equipment of a kind of rapid and convenient of Fig. 1 present invention detection work fatigue degree.
The right diagram of structure of the equipment of a kind of rapid and convenient of Fig. 2 present invention detection work fatigue degree.
The method flow diagram of a kind of rapid and convenient of Fig. 3 present invention detection work fatigue degree.
In figure: 1, eyeshield, 2, camera bellows, 3, sighting target display control program, 4, optical system and 5,
Operation device.
Detailed description of the invention
With embodiment, the present invention is described in further details below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, the equipment of a kind of rapid and convenient detection work fatigue degree, this equipment includes:
Eyeshield 1, camera bellows 2, operation device 5, optical system 4, sighting target display control program 3, optical system 4
It is arranged on camera bellows 2 inside, operation device 5 and sighting target display control program with sighting target display control program 3
3 connect；Owing to bias light has a strong impact on the detection of critical radar cross section, camera bellows 2 structure is selected to protect
Barrier dark situation.Examinee is observed to camera bellows 2 by eyeshield 1, sees that sighting target shows by optical system 4
Control system 3 exports the sighting target of different frequency, and optical system 4 image distance is 250mm.In the present embodiment,
Optical system 4 for being arranged on camera bellows 2 top and bottom, the two panels Zigzag type reflecting mirror being symmetrically installed, logical
Cross two secondary reflections and see the sighting target on sighting target display control program 3；Examinee is by operating device 5 to distinguishing
Know the sighting target to make a response, determine response time, and the sighting target seen, operate 5 above-mentioned letters of device
Breath sends sighting target display control program 3 to, and the analysis inspection software in sighting target display control program 3 receives
Operation device 5 send signal, calculate next detection-phase sighting target display control program 5 display regard
Mark frequency also shows, analyzes the fatigue strength of examinee and final detection result data are sent to outside storage
Equipment.
In the present embodiment, sighting target display control program 3 exports the digital sighting target of 4 different frequencies, tested
Person determines the response time by pressing the button being arranged on camera bellows 2, and being determined by operation hand-held device can
With the sighting target seen.Sighting target display control program 3 will detect the data message analyzed by Bluetooth transmission to hands
Machine also stores data base, it is simple to be analyzed visual neurobehavioral function further, simultaneously from laterally
It is analyzed with longitudinally evaluating the degree of fatigue to examinee.
The procedure following steps of detection work fatigue degree:
Step one: 4 sighting targets are set, as shown in Figure 3.Sighting target elects green as, and background is completely black, detection
Frequency range 35～47HZ, detection frequency interval is 4HZ, and the frequency of 4 sighting targets is 35HZ, 39HZ,
43HZ, 47HZ, the digital random of display.
Step 2: during detection, the flicker frequency being randomly provided the corresponding bright spot of numeral 4 is 35HZ, numeral 1
The flicker frequency of corresponding bright spot is 39HZ, and the flicker frequency of the corresponding bright spot of numeral 2 is 43HZ, numeral 3
The flicker frequency of corresponding bright spot is 47HZ.All numeral bright spots flash, when examinee picks out sudden strain of a muscle simultaneously
Pressing rapidly the button on camera bellows 2, recording reacting time after bright numeral, the detection numeral of reading is corresponding
Frequency be the most then designated as just data, carry out next step detection；Discontinuous then be designated as wrong data, eventually
Only detection.Sighting target display control program 3 records examinee by controlling the highest sudden strain of a muscle that hand-held device picks out
Bright frequency and the detection time in this stage.
Step 3: assume first detection-phase examinee read numeral be 4 (flicker frequencies 35HZ) and
1 (flicker frequency 39HZ), then the highest identification frequency that the first detection-phase obtains is 39HZ.Arrange
Two detection-phase detection frequency ranges are 40HZ～43HZ, and detection frequency interval is 1HZ, during detection,
The flicker frequency being randomly provided the corresponding bright spot of numeral 2 is 40HZ, the flicker frequency of the corresponding bright spot of numeral 4
For 41HZ, the flicker frequency of the corresponding bright spot of numeral 3 is 42HZ, the flicker frequency of the corresponding bright spot of numeral 1
For 43HZ.All bright spots flash simultaneously, press rapidly camera bellows 2 after examinee picks out the numeral of flicker
On button, recording reacting time, the frequency that the detection numeral of reading is corresponding is the most then designated as just data,
Carry out next step detection；Discontinuous then be designated as wrong data, termination detection.Sighting target display control program 3
Record the highest flicker frequency and the detection time in this stage that examinee picks out by controlling hand-held device.
Step 4: assume second detection-phase examinee read numeral be 2 (flicker frequencies 40HZ) and
4 (flicker frequencies 41HZ), then the highest flicker frequency that the second detection-phase records is 41HZ.Detection essence
Degree meets 1Hz requirement, and detection terminates, then examinee's critical radar cross section is 41Hz.Calculate two
The meansigma methods in individual detection-phase response time is as the response time of examinee.
Step 5: correct 2 times or wrong 2 times of duplicate detection, examinee's fatigue detecting terminates.According to
The critical radar cross section of the correct 2 time examinee of backstage record and response time, calculate average
Boundary's flicker fusion frequency and average reaction time.In the case of fatigue non-with individual critical radar cross section and
Response time empirical data value is compared, and analyzes the degree of fatigue of examinee.
Wherein detecting frequency range, detect number of times, sighting target number, practical application is according to precision and inspection
The requirement surveying duration is configured.
Claims (7)
1. the equipment of a rapid and convenient detection work fatigue degree, it is characterised in that this equipment includes: eye
Cover, camera bellows, operation device, optical system, sighting target display control program, described optical system and sighting target
Display control program is arranged on inside camera bellows, and operation device is connected with sighting target display control program；Examinee
Observed in camera bellows by eyeshield, see that sighting target display control program exports different frequency by optical system
Sighting target, examinee by operation device the sighting target picked out is made a response, sighting target display control program
In inspection software of analyzing receive signal that operation device sends, calculate next detection-phase sighting target and show
Sighting target frequency that control system shows and show, detect terminate post analysis examinee fatigue strength and will be finally
Testing result data are sent to External memory equipment.
The equipment of a kind of rapid and convenient the most according to claim 1 detection work fatigue degree, its feature
Being, described optical system is Zigzag type structure.
The equipment of a kind of rapid and convenient the most according to claim 1 detection work fatigue degree, its feature
Being, described optical system image distance is 250mm.
The equipment of a kind of rapid and convenient the most according to claim 1 detection work fatigue degree, its feature
Being, described operation device is arranged on camera bellows or is hand-held device.
The equipment of a kind of rapid and convenient the most according to claim 1 detection work fatigue degree, its feature
Being, described sighting target number is 2 to 6.
6. detect setting of work fatigue degree according to a kind of rapid and convenient described in any one claim of 1-5
Standby detection method, it is characterised in that described method comprises the steps:
Step one: arrange n sighting target, the detection frequency range of sighting target is fLstepk~
fUstepk,fUstepk>fLstepk, the detection frequency interval of sighting target is Δ fstepk, wherein n=(fUstepk-fLstepk)
÷Δfstepk+ 1, k are detection-phase number, k >=1；
Step 2: during first stage detection, randomly selecting first sighting target, flicker frequency is set to fLstepk,
Randomly selecting second sighting target, flicker frequency is set to fLstepk+Δfstepk... according to above rule, at random
Choosing (n-1)th sighting target, flicker frequency is set to fLstepk+Δfstepk× (n-2), the n-th sighting target
Flicker frequency is set to fUstepk；Showing n sighting target, examinee makes after seeing flicker sighting target sequence number clearly simultaneously
Reaction, the frequency that the sighting target sequence number of reading is corresponding is the most then designated as just data, carries out next step detection；
Discontinuous then be designated as wrong data, termination detection；The highest flicker frequency that detection equipment record examinee sees
Rate and sighting target start the response time flashed to picking out flicker sighting target；
Step 3: the highest flicker frequency seen according to examinee resets the detection frequency range of sighting target
With the detection frequency interval of sighting target, repeated execution of steps two；
Step 4: when correct judgment m time or wrong m time, detection terminates；According to backstage record
The highest flicker frequency and sighting target that m time correct examinee sees start flicker to picking out flicker sighting target
Time, calculate average critical radar cross section and average reaction time；Above-mentioned two index and individual
In the case of non-fatigue, critical radar cross section and response time empirical data value are compared, and analyze tested
The degree of fatigue of person.
Method the most according to claim 6, it is characterised in that step 2 also comprises the steps:
Step A: described step 2, as k=1, fLstep1、fUstep1、Δfstep1For detection equipment first
Stage initial parameter, the highest flicker frequency value that examinee sees is designated as fstep1；When k >=2,
Δfstepk=Δ fstepk-1÷ n, fLstepk=fstepk-1, fUstepk=fstepk-1+Δfstepk-1, the highest frequency that detects
Value is designated as fstepk；
Step B: repeated execution of steps A, until the detection frequency interval Δ f of sighting targetstepkMeet detection essence
When degree requires, detection terminates；
Step C: calculate the response time that the meansigma methods in detection response time in above-mentioned stage detects as this,
The highest flicker frequency of examinee's energy identification is designated as the critical radar cross section of examinee.
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Cited By (8)
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| CN107049227A (en) * | 2017-03-09 | 2017-08-18 | 中国民航大学 | The quick test device of flicker fusion frequency critical value and method |
| CN108498064A (en) * | 2018-03-19 | 2018-09-07 | 中国人民解放军空军航空医学研究所 | Digitize bright spot scintillation detection system |
| CN109106329A (en) * | 2018-09-20 | 2019-01-01 | 南方科技大学 | Visual fatigue stimulation method, device, storage medium and terminal |
| CN109171686A (en) * | 2018-09-27 | 2019-01-11 | 长春奥普光电技术股份有限公司 | A kind of wearable Medical Devices of intelligence and Portable household real-time monitoring system |
| CN109350003A (en) * | 2018-12-12 | 2019-02-19 | 长春奥普光电技术股份有限公司 | A kind of dark adaptation detection device |
| CN110811644A (en) * | 2019-10-15 | 2020-02-21 | 南方科技大学 | Visual fatigue measuring method and system, storage medium and electronic equipment |
| CN111528788A (en) * | 2020-05-27 | 2020-08-14 | 温州医科大学 | Portable detecting instrument for evaluating visual fatigue degree |
| CN113271839A (en) * | 2019-01-21 | 2021-08-17 | 奥林巴斯株式会社 | Endoscope device and endoscope system |
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| CN109171686A (en) * | 2018-09-27 | 2019-01-11 | 长春奥普光电技术股份有限公司 | A kind of wearable Medical Devices of intelligence and Portable household real-time monitoring system |
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| CN113271839A (en) * | 2019-01-21 | 2021-08-17 | 奥林巴斯株式会社 | Endoscope device and endoscope system |
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| CN111528788A (en) * | 2020-05-27 | 2020-08-14 | 温州医科大学 | Portable detecting instrument for evaluating visual fatigue degree |
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