CN1265304A - Visual system frequency measuring instrument - Google Patents
Visual system frequency measuring instrument Download PDFInfo
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- CN1265304A CN1265304A CN 99101491 CN99101491A CN1265304A CN 1265304 A CN1265304 A CN 1265304A CN 99101491 CN99101491 CN 99101491 CN 99101491 A CN99101491 A CN 99101491A CN 1265304 A CN1265304 A CN 1265304A
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- speed
- visual system
- decelerator
- disk
- measuring instrument
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Visual system has the characteristics of receiving and processing outer signal periodically, and the visual system frequency measuring instrument measures the frequency of the visual system of the testee. The frequency of visual system is likely to be used in testing disease and health state and finding persons with special function. The measuring instrument consists of five parts of speed regulating motor, rotation speed measurement, observation disc, speed reducer and casing. When the rotation speed of the speed reglating motor is increased from zero, the testee sees first a light ring and then lamps looking like stationary,and then the rotation speed of the disc multiplied by the number of color lamps will be the tested visual system frequency. With increasing rotation speed, the testee may see the stationary lamps for several times, the minimum or the first observed rotation speed is taken into account.
Description
One, experiment and exploration
1, experiment
Flash of light gyro shown in Figure 1A is turned clockwise in smooth horizontal plane.When rotary speed was higher, observed effect was shown in Figure 1B, and the light that bulb sends becomes a fuzzy ring of light.Along with the increase of time, rotary speed reduces gradually, can observe bulb motion (beating) clockwise gradually, shown in Fig. 1 C.The situation shown in Fig. 1 D then occurs, bulb seems to stop not change.Afterwards, the situation shown in Fig. 1 E occurs, observe bulb motion (beating) counterclockwise gradually.The fuzzy ring of light as Figure 1B appears again more backward.Last because rotating speed is too low, gyro is toppled over.
2, explain
In above-mentioned experiment, gyro is turning clockwise always, and rotating speed is in continuous reduction, and bulb is always luminous.Does but why can observe bulb move (beating) clockwise, static, counterclockwise motion (beating)? answer has only one, and our visual system is not the even extraneous things of perception continuously, and visual system has frequency characteristic.Our visual system receives outer signals periodically.Two, apparatus structure
Visual system frequency measuring instrument is made up of variable-speed motor, tachometric survey, observation disk and decelerator and shell five parts, and wherein first three part indispensability is shown in Figure 2.
1. variable-speed motor
The variable-speed motor part is made up of dc source, speed governing turn-knob and dc motor three parts.Be connected with decelerator or directly be connected, be used to reconcile the rotating speed of rotating circular disk with rotating circular disk.
2. observation disk
Observing has a colored electric lamp bulb or evenly places several identical colored electric lamp bulbs along same circumference on the disk.Observe disk by the decelerator driving or directly by direct current generator driving rotation.
3. tachometric survey
The tachometric survey part is measured the tachometer of measuring of observing disc rotation speed by one and is formed.
4. decelerator
Decelerator is a gear reduction unit, is used for the output speed of rotating speed by motor transferred in the needed range of speeds of observation disk.Decelerator according to circumstances determines whether to install.
5. shell
Fix and protect buncher, observe disk, tachometric survey and decelerator.Three, using method
1. open colored electric lamp bulb, speed measuring system and buncher power supply;
2. allow the testee observe the bulb of rotating circular disk;
3. when the rotating speed of buncher being raise gradually by zero, the observer will see a ring of light; When the rotating speed of buncher continues to raise, the observer will see that bulb seems transfixion;
4. noting the rotating speed that speed measuring system is measured this moment, is exactly testee's frequency of visual system with its number that multiply by colored electric lamp bulb;
5. if along with the raising of rotating speed, the observer sees that several times bulb seems transfixion, then is as the criterion with observed minimum speed for the first time.Four, purposes
1. the visual system frequency when the measurement testee is tested.
2. the visual system frequency of different people may be different, and different visual system frequencies may be represented a people's special talent in one aspect.
3. the visual system frequency of same individual different times may be different, and it may be subjected to the influence of each side such as healthy, mental health.Measure the visual system frequency and may provide reference for some disease of diagnosis and treatment.
Claims (2)
- One, the structure of visual system frequency measuring instrumentVisual system frequency measuring instrument is made up of variable-speed motor, tachometric survey, observation disk and decelerator and shell five parts.The variable-speed motor part is made up of dc source, speed governing turn-knob and dc motor three parts.Be connected with decelerator or directly be connected, be used to reconcile the rotating speed of rotating circular disk with rotating circular disk.Observing has a colored electric lamp bulb or evenly places several identical colored electric lamp bulbs along same circumference on the disk.Observe disk by the decelerator driving or directly by direct current generator driving rotation.The tachometric survey part is measured the tachometer of measuring of observing disc rotation speed by one and is formed.Decelerator is a gear reduction unit, is used for the output speed of rotating speed by motor transferred in the needed range of speeds of observation disk.Decelerator is not essential.Shell is used for fixing and protects buncher, observes disk, rotation-speed measuring device and decelerator.
- Two, the measuring principle of visual system frequency measuring instrumentWhen the rotating speed of buncher is raise gradually by zero, the observer will see a ring of light; When the rotating speed of buncher continues to raise, the observer will see that bulb seems transfixion; The number that the rotating speed of this moment multiply by colored electric lamp bulb is exactly testee's frequency of visual system; If along with the raising of rotating speed, the observer sees that several times bulb seems transfixion, then be as the criterion with observed minimum speed for the first time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99101491 CN1265304A (en) | 1999-03-02 | 1999-03-02 | Visual system frequency measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99101491 CN1265304A (en) | 1999-03-02 | 1999-03-02 | Visual system frequency measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1265304A true CN1265304A (en) | 2000-09-06 |
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ID=5270475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99101491 Pending CN1265304A (en) | 1999-03-02 | 1999-03-02 | Visual system frequency measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1265304A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103040439A (en) * | 2011-10-14 | 2013-04-17 | 上海美沃精密仪器有限公司 | Tilt-shift tomography eye scanning system and method thereof |
| CN110974145A (en) * | 2019-12-20 | 2020-04-10 | 南京五能电子科技有限公司 | Human visual frequency measuring method and device |
-
1999
- 1999-03-02 CN CN 99101491 patent/CN1265304A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103040439A (en) * | 2011-10-14 | 2013-04-17 | 上海美沃精密仪器有限公司 | Tilt-shift tomography eye scanning system and method thereof |
| CN110974145A (en) * | 2019-12-20 | 2020-04-10 | 南京五能电子科技有限公司 | Human visual frequency measuring method and device |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |