CN104665847A - Tester for measuring weight difference threshold by constant stimulus method - Google Patents
Tester for measuring weight difference threshold by constant stimulus method Download PDFInfo
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- CN104665847A CN104665847A CN201510084859.XA CN201510084859A CN104665847A CN 104665847 A CN104665847 A CN 104665847A CN 201510084859 A CN201510084859 A CN 201510084859A CN 104665847 A CN104665847 A CN 104665847A
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- tester
- wheel disc
- groove
- difference limen
- stimulus
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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
- A61B5/165—Evaluating the state of mind, e.g. depression, anxiety
Abstract
The invention discloses a tester for measuring a weight difference threshold by a constant stimulus method. The tester comprises a bracket, wherein a wheel disk is arranged on the bracket; the wheel disk is connected with an output shaft of a motor below the bracket, and the motor is connected with a controller; a guiding groove is formed at one side of the wheel disk, and one end, far away from the wheel disk, of the guiding groove is connected with a blocking plate; a blocking plate hole is formed in the blocking plate; a plurality of grooves are formed in the wheel disk along the circumferential direction, a test block is arranged in each groove, and the test blocks are different in weight; a plurality of buttons are further arranged on the bracket and are connected with the controller; the controller is connected with an upper computer. The tester has the beneficial effects that the tester can be used for recording data automatically, so that error rate is lowered; manual replacement of the test blocks is not required during testing, so that accuracy is improved, and the intensity of labor is reduced.
Description
Technical field
The present invention relates to Experiment of Psychology instrument field, especially a kind of method of constant stimulus gravimetry difference limen tester.
Background technology
Testing weight difference limen with method of constant stimulus is one of pop psychology common experimental, be derived from 1860, Fechner (G.T.Fechner) has founded the psychophysical method of relation between research psychology amount with physical quantity, and lays a good foundation for the development of Experiment of Psychology method.Fechner proposes to measure sensory threshold by 3 kinds of methods, and one of them is method of constant stimulus.Method of constant stimulus is again true false method or frequency method.Its assay method allows testedly to be compared with standard stimulus by comparison stimulus, standard stimulus is the tested a certain stimulus intensity felt, comparison stimulus can be determined in next segment distance on standard stimulus, generally select 5-10 as comparison stimulus, present at random, such needs that compare between two do many times.When measuring difference limen by the method, as weight difference limen, General Requirements is tested to put on an eyeshade, and relatively does 3 kinds of answers: second stimulation is heavy, lighter or equal than first stimulation for what often organize weight counterweight.Like this, in total response series, just can obtain two sensorial turning points, one is lighter than standard stimulus to equal from sensation, and second is wait until mutually heavily from sensation than standard stimulus.Previous turning point is difference limen lower limit (Ll); A rear turning point is the difference limen upper limit (Lu), and standard stimulus between.Distance between the difference limen upper limit and difference limen lower limit is feel equal scope, and the meansigma methods of the difference limen upper limit and difference limen lower limit is point of subjective equality (PSE), namely sensuously equal with standard stimulus value.The difference of standard stimulus and difference limen lower limit is lower difference threshold, and the difference of the difference limen upper limit and standard stimulus is upper difference threshold, and the meansigma methods of upper difference threshold and lower difference threshold is absolute difference threshold.
The experimental apparatus of existing gravimetry difference limen is very simple, and experimental apparatus only has a series of weight counterweight, comprises 88g, 92g, 96g, 100g, 104g, 108g, 112g.Wherein, take 100g as standard stimulus, 88g, 92g, 96g, 100g, 104g, 108g, 112g are 7 comparison stimuluses.Test process is as follows:
1, testedly to put on an eyeshade, main examination presents two weight counterweights to tested, one as standard stimulus, one, as comparison stimulus, sequentially at random, is pinched counterweight by dominant hand thumb on probation and forefinger and slowly upwards lifts, weigh twice up and down in the hand, within about 2 seconds, just put down, when weighing second in the hand perceptually, verbal report second ratio first " weight ", " equal " or " gently ".Record keeping personnel records presenting order and reporting the result of weight counterweight.Notice that presenting two intervals stimulated does not exceed 1 second, in order to avoid the first sensory extinction.
2, more complete, interval starts to carry out next group for 5 seconds later and compares, until respectively compare 20 groups between standard stimulus (100g) with 7 comparison stimuluses, in these 20 groups, have before 10 groups of standard stimuluses are presented on comparison stimulus, have after 10 groups of standard stimuluses are presented on comparison stimulus, complete whole experimentation, need to compare 140 groups.
3, record complete, content is organized into the result table of method of constant stimulus gravimetry difference limen, then drawing relative to standard stimulus is respectively 3 heavy, equal and light curves, obtain 50% place's difference limen upper limit (Lu) and difference limen lower limit (Ll), then obtain absolute difference threshold.
Existing technical scheme has the following disadvantages and shortcoming:
1, manual data recorded amounts is too large, and manual record is easily made mistakes.
2, the Artificial Control time is not accurate.Control time needs to be accurate to second, comprise main examination to tested present the time often organizing weight counterweight do not exceed 1 second, tested weigh in the hand the time of lifting counterweight be 2 seconds and often organize trial interval time not lower than 5 seconds.
3, data processing complex.After data record is complete, need manual sorting data, 70 groups of data results before standard stimulus is presented on comparison stimulus reverse, then carry out formula operation, obtain absolute difference threshold.
Summary of the invention
Object of the present invention is exactly to solve the problem, propose a kind of method of constant stimulus gravimetry difference limen tester, utilize the strict control time interval of controller, greatly improve the preciseness of experiment, science, standardization, and after test, mass data process is completed by controller, not only accurate but also time saving and energy saving.
To achieve these goals, the present invention adopts following technical scheme:
Method of constant stimulus gravimetry difference limen tester, comprising: support;
Described support is provided with wheel disc; Described wheel disc is connected with motor below support, and described motor is connected with controller;
The side of described wheel disc is provided with guiding groove, and described guiding groove connects shutter away from one end of wheel disc, and shutter is used for blocking subjects's sight line; Described shutter is provided with shutter hole, is positioned at shutter bottom centre, is convenient to subjects and arm is stretched to wheel disc from this shutter hole;
Described wheel disc is along the circumferential direction provided with multiple groove, is provided with a test block in each described groove, varying in weight of test block;
Described support is also provided with multiple button, and described button is connected with controller;
Described controller is connected with host computer, and described host computer is computer.Controller accepts the order that host computer passes down, controls the rotating speed of wheel disc, controller by the data upload after process to computer, for showing test results.
Circular arc line bottom described shutter hole and the end face camber line of guiding groove coincide.
Described guiding groove is provided with spacing ring near one end of wheel disc, the height that restriction subjects wrist is lifted, and makes tester lift identical height at every turn, improves the accuracy of test.
Described wheel disc is provided with navigation button in the middle of two grooves along the circumferential direction, and navigation button is connected with controller.Navigation button is the scale of wheel disc rotational angle, is also weigh location confirmation button in the hand.Effect 1: play wheel disc spins after parked position positioning function, for each weight ratio comparatively before, with this navigation button determination test benchmark position, prompting subjects, to compare the test block of two about this navigation button; 2: press this navigation button, by this test position information input control device, be convenient to subsequent statistical.
Described wheel disc is connected with the output shaft of motor by gear drive.
The number of described button is 3, indicates left heavy, equal, right heavy respectively.
Described groove is in the circumferentially equidistant setting along wheel disc.
The weight size being placed on the described test block in groove is arithmetic progression, and standard weights is a, and tolerance is d, compares weight and is respectively a-d, a-2d, a-3d, a, a+d, a+2d, a+3d, wherein a, d constant all for being greater than zero, and a-3d>0.
A test block being standard weights is had at least in two adjacent test blocks.
The number of described groove is 16, test block along the clockwise of wheel disc or anticlockwise weight arrangement is: weight is respectively a-3d, a-2d, a-d, a, a+d, a+2d, the test block of a+3d, a successively one, interval groove is arranged in groove, and to place a standard weights in groove between every two test blocks be the test block of a.
Controller is for controlling the velocity of rotation of motor, and the rotational speed of setting pressed by wheel disc under the drive of motor.
The invention has the beneficial effects as follows: this tester records data automatically, fall and lacked error rate, and manually need not carry out the replacing of test block during test, both improve accuracy and additionally reduced labor intensity.Overcome traditional " traditional method " manual record numerous and diverse and easily make mistakes, comparison time is difficult to rigorous drawbacks such as loaded down with trivial details artificial computings after control and test.Improve the preciseness of experiment, science, standardization greatly, and after test, mass data process is completed by controller, not only accurate but also time saving and energy saving.
Accompanying drawing explanation
Fig. 1 is the structure chart of embodiment of the present invention;
Structural representation when Fig. 2 is not tape test block;
Fig. 3 is spacing ring partial enlarged drawing;
Fig. 4 is button partial enlarged drawing;
Structural representation when Fig. 5 is tape test block;
Fig. 6 is wheel disc top view;
Fig. 7 top view of the present invention;
Fig. 8 is side view of the present invention;
Wherein, 1. controller, 2. button, 3. shutter hole, 4. shutter, 5. spacing ring, 6. test block, 7. navigation button, 8. wheel disc, 9. host computer, 10. motor, 11 guiding grooves, 12. grooves, 13 supports.
Detailed description of the invention:
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
As shown in figures 1-8, method of constant stimulus gravimetry difference limen tester, comprising: support 13;
Support 13 is provided with wheel disc 8; Wheel disc 8 and support 13 below motor 10 are connected, and motor 10 is connected with controller 1;
The side of wheel disc 8 is provided with guiding groove 11, and guiding groove 11 connects shutter 4 away from one end of wheel disc, and shutter 4 is for blocking subjects's sight line; Shutter 4 is provided with shutter hole 3, is positioned at shutter 4 bottom centre, is convenient to subjects and arm is stretched to wheel disc 8 from this shutter hole 3;
Wheel disc 8 is along the circumferential direction provided with 16 grooves 12, is provided with a test block 6 in each groove 12, varying in weight of test block 6; Groove 12 is in the circumferentially equidistant setting along wheel disc 8.
Wheel disc 8 is connected by the output shaft of gear drive with motor 10.
Support 13 is also provided with 3 buttons 2, indicate left heavy, equal, right heavy respectively, button 2 is connected with controller 1;
Controller 1 is connected with host computer 9, and host computer is computer, and controller 1 accepts the order that host computer passes for 9 times, controls the rotating speed of wheel disc 8, controller 1 by the data upload after process to computer, for showing test results.
The end face camber line of the circular arc line bottom shutter hole 3 and guiding groove 11 coincides.
Test block 6 is counterweight, and the weight size of test block 6 has 88g, 92g, 96g, 100g, 104g, 108g, 112g; Wherein, take 100g as the standard stimulus of standard weights, 88g, 92g, 96g, 100g, 104g, 108g, 112g are the comparison stimulus of 7 weight/power ratios.
Putting in order as 100g, 88g, 100g, 92g, 100g, 96g, 100g, 100g, 100g, 104g, 100g, 108g, 100g, 112g, 100g, 100g of test block 6,16 counterweights having at least to be standard weights 100g in two adjacent test blocks 6.
Guiding groove 11 is provided with spacing ring 5 near one end of wheel disc 8, the height that restriction subjects wrist is lifted, and makes tester lift identical height at every turn, improves the accuracy of test.
Wheel disc 8 is provided with navigation button 7 in the middle of two grooves 12 along the circumferential direction, and navigation button 7 is connected with controller 1.Navigation button 7 is scales of wheel disc 8 rotational angle, is also weigh location confirmation button in the hand.Effect 1: play wheel disc 8 and rotate rear parked position positioning function, for each weight ratio comparatively before, with this navigation button determination test benchmark position, prompting subjects, to compare the counterweight of two about this navigation button; 2: press this navigation button, by this test position information input control device, be convenient to subsequent statistical.
Experimentally require [between standard stimulus (100g) with 7 comparison stimuluses, respectively to compare 20 groups, in these 20 groups, have before 10 groups of standard stimuluses are presented on comparison stimulus, have after 10 groups of standard stimuluses are presented on comparison stimulus], the rotation of wheel disc 8 is controlled by controller, parked position (7 navigation button stop place) meet: wherein 10 groups totally 70 parked positions be standard stimulus 100g counterweight position in left side, now right side be respectively 7 comparison stimulus counterweights varied in weight; Other 10 groups totally 70 parked positions be standard stimulus 100g counterweight position on right side, now left side is respectively 7 comparison stimulus counterweights varied in weight, thus realizes experiment initial designs requirement;
Wheel disc 8 parked position, meets navigation button 7 just to guiding groove 11 middle position (being convenient to be tried out dominant hand operation);
The rotational time of wheel disc 8 is 5 seconds, and residence time is 5 seconds;
Wheel disc 8 rotates at every turn and starts for first 1 second, has the first auditory tone cues ring, " drip, turn ", the prompting duration of a sound 0.5 second, and prompting subjects regains finger, and wheel disc 8 will rotate at once;
Wheel disc 8 residence time is 5 seconds.This 5 second, design was assigned as: the 1st second: testedly press navigation button 7; 2-3 lifts the left side counterweight time for weighing in the hand second; 4-5 lifts the right side counterweight time for weighing in the hand second;
Wheel disc 8 is resident to come to a complete stop simultaneously, and have second auditory tone cues, " rattle away, stop ", points out tested, and wheel disc 8 stops, and can carry out next group comparison operation; Tested hear the second prompt tone after, first press...with one's finger lower navigation button 7, then compares this navigation button about 7 two counterweight weight;
Within 3rd second, sends the 3rd prompt tone after wheel disc 8 is resident, as " sing, change ", the 3rd prompt tone appears at 3 seconds rings after the second prompt tone.In this 3 second, design time is assigned as: the 1st second tested presses navigation button 7; 2-3 lifts the left side counterweight time for weighing in the hand second.Prompting subjects, first the counterweight time of weighing in the hand arrives, and goes rapidly to weigh second adjacent counterweight of right side (meet test requirements document: the act time weighed in the hand by each counterweight was 2 seconds, two counterweights are weighed in the hand and lifted the comparison interval time within 1 second) in the hand;
In 2 seconds after 3rd prompt tone ring, the first prompt tone ring, points out and testedly puts down counterweight, recalls finger, and this is weighed in the hand and lifts comparison and terminate, and wheel disc 8 will rotate at once;
Carry out 140 groups of comparisons and so forth.
After 140 groups of comparisons terminate, controller can process according to the typing push-botton operation in tested experimentation, and test result is shown.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. method of constant stimulus gravimetry difference limen tester, is characterized in that, comprising: support;
Described support is provided with wheel disc; Described wheel disc is connected with motor below support, and described motor is connected with controller;
The side of described wheel disc is provided with guiding groove, and described guiding groove connects shutter away from one end of wheel disc; Described shutter is provided with shutter hole;
Described wheel disc is along the circumferential direction provided with multiple groove, is provided with a test block in each described groove, varying in weight of test block;
Described support is also provided with multiple button, and described button is connected with controller;
Described controller is connected with host computer.
2. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, it is characterized in that, described guiding groove is provided with spacing ring near one end of wheel disc.
3. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, it is characterized in that, described host computer is computer.
4. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, is characterized in that, described wheel disc is provided with navigation button in the middle of two grooves along the circumferential direction, and navigation button is connected with controller.
5. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, it is characterized in that, the number of described button is 3, indicates left heavy, equal, right heavy respectively.
6. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, it is characterized in that, described groove is in the circumferentially equidistant setting along wheel disc.
7. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, it is characterized in that, the weight size being placed on the described test block in groove is arithmetic progression, standard weights is a, and tolerance is d, compares weight and is respectively a-d, a-2d, a-3d, a, a+d, a+2d, a+3d, wherein a, d constant all for being greater than zero, and a-3d>0.
8. method of constant stimulus gravimetry difference limen tester as claimed in claim 7, is characterized in that, has one at least for the test block of standard weights in two adjacent test blocks.
9. method of constant stimulus gravimetry difference limen tester as claimed in claim 7, it is characterized in that, the number of described groove is 16, and test block along the clockwise of wheel disc or anticlockwise weight arrangement is: weight is respectively a-3d, a-2d, a-d, a, a+d, a+2d, the test block of a+3d, a successively one, interval groove is arranged in groove, and to place a standard weights in groove between every two test blocks be the test block of a.
10. method of constant stimulus gravimetry difference limen tester as claimed in claim 1, it is characterized in that, described wheel disc is connected with the output shaft of motor by gear drive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510084859.XA CN104665847B (en) | 2015-02-16 | 2015-02-16 | Method of constant stimulus gravimetry difference limen tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510084859.XA CN104665847B (en) | 2015-02-16 | 2015-02-16 | Method of constant stimulus gravimetry difference limen tester |
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| CN104665847A true CN104665847A (en) | 2015-06-03 |
| CN104665847B CN104665847B (en) | 2017-03-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364845B1 (en) * | 1998-09-17 | 2002-04-02 | University Of Rochester | Methods for diagnosing visuospatial disorientation or assessing visuospatial orientation capacity |
| US20100308982A1 (en) * | 2009-06-04 | 2010-12-09 | The Royal Institution For The Advancement Of Learning/Mcgill University | Floor-based haptic communication system |
| CN103494610A (en) * | 2013-09-03 | 2014-01-08 | 华东师范大学科教仪器厂 | Object weight discriminating device for psychological test instrument and object weight testing method |
| CN204542156U (en) * | 2015-02-16 | 2015-08-12 | 山东师范大学 | Weight difference limen test set |
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2015
- 2015-02-16 CN CN201510084859.XA patent/CN104665847B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364845B1 (en) * | 1998-09-17 | 2002-04-02 | University Of Rochester | Methods for diagnosing visuospatial disorientation or assessing visuospatial orientation capacity |
| US20100308982A1 (en) * | 2009-06-04 | 2010-12-09 | The Royal Institution For The Advancement Of Learning/Mcgill University | Floor-based haptic communication system |
| CN103494610A (en) * | 2013-09-03 | 2014-01-08 | 华东师范大学科教仪器厂 | Object weight discriminating device for psychological test instrument and object weight testing method |
| CN204542156U (en) * | 2015-02-16 | 2015-08-12 | 山东师范大学 | Weight difference limen test set |
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