CN104575177A - Laser timing guide rail - Google Patents
Laser timing guide rail Download PDFInfo
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- CN104575177A CN104575177A CN201410821943.0A CN201410821943A CN104575177A CN 104575177 A CN104575177 A CN 104575177A CN 201410821943 A CN201410821943 A CN 201410821943A CN 104575177 A CN104575177 A CN 104575177A
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- guide rail
- catoptron
- laser
- height
- timing guide
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
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- Educational Administration (AREA)
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- Theoretical Computer Science (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention provides a laser timing guide rail. The laser timing guide rail comprises a laser unit power supply, a semi-conductor laser unit, a guide rail body, a reflecting mirror group, a light sensitive tube and an amplifier, wherein the laser unit power supply is connected with the semi-conductor laser unit; the reflecting mirror group comprises a plurality of reflecting mirrors, all the reflecting mirrors are arranged on two sides of the guide rail body respectively, and the reflecting mirrors and the semi-conductor laser unit form a light path; all the reflecting mirrors sequentially reflect lasers of the semi-conductor laser unit respectively and output the lasers to the light sensitive tube; an output end of the light sensitive tube is connected with the amplifier. Thus, the timing guide rail, simplification of the light path, reduction of the number of receivers as well as effective realization of timing and speed measurement of fast moving objects are realized with the laser technology, and the laser timing guide rail can be matched with multiple signal receiving devices for use and used as a teaching demonstration to enable students to learn natural physical science.
Description
Technical field
The present invention relates to the experimental design of physics teaching, in particular, a kind of laser timing guide rail.
Background technology
Some general physics kinematics experiment teaching aids do not improve for many years, such as, name is called the Chinese patent of guide rail test carriage with digital timing, and its application number is 90216765.0, for the guide rail test carriage with digital timing of minute in a kind of general physics kinematics experiment.Feature of the present invention is shallow slot at edge, guide-rail plate face slidably controls electronic watch function second switch built with two, these two gauge tap are in parallel with functional switch second of electronic watch respectively with wire, the support of physics dolly side is equipped with the realization that is used in combination with the gauge tap of electronic watch functional switch second to the control element that second, functional switch controlled, in second of electronic watch, functional switch connects a single core jack.The present invention is used for the experiment of all minutes in the experiment of general physics kinematics.
But after two more than ten years, the development of laser technology, makes timing guide rail test there is the space of improving, and reaches more accurate effect.
Summary of the invention
The invention provides a kind of new laser timing guide rail, technical matters to be solved be how to adopt laser technology to realize timing guide rail, simplify light path, reduce receiver quantity, effectively realize the timing of rapid moving object and test the speed, adopt some catoptrons and semiconductor laser to form a light path, adopt at least two pairs of catoptrons carry out light reflection, adopt catoptron and guide rail coordinate formed can be used for testing the speed at least two sections of light paths, multi-signal receiving trap use etc. can be coordinated.
Technical scheme of the present invention is as follows: a kind of laser timing guide rail, and it comprises laser power supply, semiconductor laser, guide rail, high anti-catoptron group, photosensitive tube and amplifier; Described laser power supply connects described semiconductor laser, for providing power supply for described semiconductor laser; Described height anti-catoptron group comprises some high anti-catoptrons, and the anti-catoptron of each described height is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described height anti-catoptron difference order-reflected, the laser of semiconductor laser, outputs to described photosensitive tube; The output terminal of described photosensitive tube connects described amplifier; Wherein, in the some high anti-catoptron of described height anti-catoptron group, comprise at least two to the anti-catoptron of height; Every high a pair anti-catoptron comprises the first catoptron being positioned at described guide rail side and the second catoptron being positioned at described guide rail opposite side; One section of light path of crossing described guide rail is formed between described first catoptron and described second catoptron.
Preferably, described laser timing guide rail also comprises a LED, and described LED connects the output terminal of described amplifier.
Preferably, also comprise an A/D converter, described A/D converter connects the output terminal of described amplifier.
Preferably, described laser timing guide rail also comprises a computing machine, and described computing machine connects the output terminal of described A/D converter.
Preferably, described laser timing guide rail also comprises a dolly, and described dolly is arranged on described guide rail.
Preferably, described photosensitive tube is infrared photodiode.
Preferably, in the anti-catoptron group of described height, at least three pairs of catoptrons are comprised.
Preferably, in the anti-catoptron group of described height, at least four pairs of catoptrons are comprised.
Preferably, in the anti-catoptron group of described height, also comprise the anti-catoptron of height that is positioned at a described optical line terminal.
Preferably, the same side that the anti-catoptron of height of described optical line terminal and described semiconductor laser are arranged at described guide rail is positioned at.
Implement the present invention, there is following beneficial effect: adopt laser technology to realize timing guide rail, simplify light path, reduce receiver quantity, effectively realize the timing of rapid moving object and test the speed, adopt some catoptrons and semiconductor laser to form a light path, adopt at least two pairs of catoptrons carry out light reflection, adopt catoptron and guide rail coordinate formed can be used for testing the speed at least two sections of light paths, multi-signal receiving trap use etc. can be coordinated, be convenient to as teaching demonstration, make Students ' Learning nature physics.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of one embodiment of the present of invention.
Embodiment
For better the object, technical solutions and advantages of the present invention being described, below in conjunction with the drawings and specific embodiments, the invention will be further described.
One embodiment of the present of invention are, a kind of laser timing guide rail, and it comprises laser power supply, semiconductor laser, guide rail, high anti-catoptron group, photosensitive tube and pen recorder; Such as, described pen recorder comprises an amplifier; And for example, pen recorder also comprises the computing machine etc. be connected with amplifier.Or pen recorder can also be that other can record device or the circuit of photosensitive tube output signal; Such as, photosensitive tube also arranges analog-to-digital conversion module, for simulating signal is converted to digital signal, is undertaken recording or exporting as tracer signal after the amplification of described amplifier by described pen recorder.
Described laser power supply connects described semiconductor laser, for providing power supply for described semiconductor laser; Described height anti-catoptron group comprises some high anti-catoptrons, and the anti-catoptron of each described height is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser, and described catoptron is high anti-catoptron; Wherein, described in each described height anti-catoptron difference order-reflected, the laser of semiconductor laser, outputs to described photosensitive tube; The output terminal of described photosensitive tube connects described amplifier; Wherein, in the some high anti-catoptron of described height anti-catoptron group, comprise at least two to the anti-catoptron of height; Every a pair catoptron comprises the first catoptron being positioned at described guide rail side and the second catoptron being positioned at described guide rail opposite side; One section of light path of crossing described guide rail is formed between described first catoptron and described second catoptron, in teaching demonstration, when the moving object on guide rail is through crossing each section of light path of described guide rail, can of short durationly shut out the light, light path is interrupted, now photosensitive tube sends the signal notice that light path is interrupted, and exports after described amplifier amplifies; It should be noted that; these signals notice, amplifying signal are not the present invention's scopes required for protection, and the present invention is required for protection is the structure of this laser timing guide rail; it coordinates or comprises these pick-up units, pen recorder uses, and can realize teaching demonstration function.
Like this, the technique effect reached comprises: adopt laser technology to realize timing guide rail, simplify light path, reduce receiver quantity, effectively realize the timing of rapid moving object and test the speed, adopt some high anti-catoptrons to form a light path with semiconductor laser, adopt at least two to the anti-catoptron of height carry out light reflection, adopt catoptron and guide rail coordinate formed can be used for testing the speed at least two sections of light paths, multi-signal receiving trap use etc. can be coordinated, be convenient to as teaching demonstration, make Students ' Learning nature physics.
In order to reduce measuring error, preferably, described one section of light path is perpendicular to described guide rail, and such as, the light between first catoptron and second catoptron, perpendicular to described guide rail; Preferably, the light between each first catoptron that there is light path, and the light between each second catoptron that there is light path, be all parallel to described guide rail.Like this, the technique effect reached is, the moving object on guide rail is through each section of light path perpendicular to described guide rail, and distance is easy to calculate, and simplifies experimental data, is convenient to demonstration and illustrates, be also conducive to Students ' Learning.
In order to solve the technical matters how effectively detecting light path, such as, described photosensitive tube is infrared photodiode.Preferably, described photosensitive tube is arranged according to described semiconductor laser, and such as, the model of described photosensitive tube is arranged according to the output wavelength of described semiconductor laser.Like this, effectively light path can be detected more accurately.
Use for the ease of user, without the need to purchasing moving object separately, preferably, described laser timing guide rail also comprises a dolly, and described dolly is arranged on described guide rail.In order to exempt from standby battery or change battery, preferably, described dolly arranges solar panel and charging circuit, accumulator, for driving described moving of car.For the ease of reminding user, preferably, described laser timing guide rail also comprises a LED, described LED connects the output terminal of described amplifier, and like this, light path is often interrupted once, described LED extinguishes prompting once, or also comprise an A/D converter, described A/D converter also connects the output terminal of described amplifier.Adopt A/D converter to carry out simulating signal sampling and conversion, photosensitive tube connects amplifier, and signal carries out analog to digital conversion by A/D converter after amplifying, and simulating signal is converted to digital signal, is undertaken recording or exporting as tracer signal by pen recorder.
Described laser timing guide rail also comprises a computing machine, and described computing machine connects the output terminal of described A/D converter.Such as, light path is often interrupted once, extinguishes prompting or the digital signal after described A/D converter process is sent to described computing machine by LED.Preferably, described photosensitive tube is infrared photodiode.Wherein, the anti-catoptron of each described height becomes miter angle with described guide rail to high anti-catoptron respectively, and in every high a pair anti-catoptron, first catoptron and second mirror parallel are arranged, and forms one section of light path of crossing described guide rail between the two.Like this, for ease of maintenaince laser timing guide rail, when the anti-catoptron of a certain height damages, can direct general mirror act for sb.In order to solve the problem of installing high anti-catoptron, and for example, guide rail is arranged some to mounting hole, each catoptron correspondence arranges an installation plug-in unit, and described installation plug-in unit inserts in corresponding mounting hole, with the position of the anti-catoptron of fixing height and reflection direction.Like this, easy for installation, light path assembly is simple.
As shown in Figure 1, one embodiment of the present of invention are, a kind of laser timing guide rail, and it comprises laser power supply 100, semiconductor laser 200, guide rail 400, high anti-catoptron group 500, photosensitive tube 600 and amplifier 700; Described laser power supply connects described semiconductor laser, for providing power supply for described semiconductor laser; Described semiconductor laser Output of laser, to the anti-catoptron group of described height, such as, outputs to the first high anti-catoptron 510.
Described height anti-catoptron group comprises some high anti-catoptrons, and the anti-catoptron of each described height is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described height anti-catoptron difference order-reflected, the laser of semiconductor laser, outputs to described photosensitive tube; As shown in Figure 1, described height anti-catoptron group comprises the high anti-catoptron 520 of the first high anti-catoptron 510, second, the high anti-catoptron 540 of the anti-catoptron of third high the 530, the 4th, the 5th high anti-catoptron 550, the 6th high anti-catoptron 560, the 7th high anti-catoptron 570, the 8th high anti-catoptron 580 and the 9th high anti-catoptron 590, the anti-catoptron of each described height is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, after the laser of described semiconductor laser sequentially passes through the high anti-catoptron 520 of the first high anti-catoptron 510, second, the high anti-catoptron 540 of the anti-catoptron of third high the 530, the 4th, the 5th high anti-catoptron 550, the 6th high anti-catoptron 560, the 7th high anti-catoptron 570, the 8th high anti-catoptron 580 and the 9th high anti-catoptron 590, output to described photosensitive tube, the output terminal of described photosensitive tube 600 connects described amplifier 700.Or can be understood as, be a complete light path through the anti-catoptron of each height to described photosensitive tube from described semiconductor laser.
Wherein, in the some high anti-catoptron of described height anti-catoptron group, comprise at least two to the anti-catoptron of height; Every high a pair anti-catoptron comprises the high anti-catoptron of the first being positioned at described guide rail side and is positioned at the high anti-catoptron of second of described guide rail opposite side; One section of light path of crossing described guide rail is formed between the high anti-catoptron of described first and the high anti-catoptron of described second.Preferably, in described catoptron group, at least three pairs of catoptrons are comprised.Preferably, in described catoptron group, at least four pairs of catoptrons are comprised.Such as, in described catoptron group, comprise four pairs of catoptrons; Such as, as shown in Figure 1, four pairs of catoptrons are respectively: the first high anti-catoptron 510 and the second high anti-catoptron 520, the anti-catoptron of third high 530 and the 4th high anti-catoptron 540, the 5th high anti-catoptron 550 and the 6th high anti-catoptron 560, the 7th high anti-catoptron 570 and the 8th high anti-catoptron 580; Wherein, the first high anti-catoptron 510, the 4th high anti-catoptron 540, the 5th high anti-catoptron 550 and the 8th high anti-catoptron 580 are positioned at described guide rail side, as the high anti-catoptron of described first; Second high anti-catoptron 520, the high anti-catoptron 560 of the anti-catoptron of third high the 530, the 6th and the 7th high anti-catoptron 570 are positioned at described guide rail opposite side, as the high anti-catoptron of described second.Between first high anti-catoptron 510 and the second high anti-catoptron 520, between the anti-catoptron of third high 530 and the 4th high anti-catoptron 540, between the 5th high anti-catoptron 550 and the 6th high anti-catoptron 560, between the 7th high anti-catoptron 570 and the 8th high anti-catoptron 580, form one section of light path of crossing described guide rail respectively.
Preferably, as shown in Figure 1, described laser timing guide rail also comprises a dolly 300, and described dolly 300 is arranged on described guide rail 400.Preferably, as shown in Figure 1, described laser timing guide rail also comprises a LED 800, and described LED 800 connects the output terminal of described amplifier 700.Also comprise an A/D converter 1100, described A/D converter 1100 also connects the output terminal of described amplifier 700.A/D converter 1100 is adopted to carry out simulating signal sampling and conversion, photosensitive tube 600 connects amplifier 700, signal carries out analog to digital conversion by A/D converter 1100 after amplifying, and simulating signal is converted to digital signal, is undertaken recording or exporting as tracer signal by pen recorder.
Described laser timing guide rail also comprises a computing machine 900, and described computing machine 900 connects the output terminal of described A/D converter 1100.Such as, light path is often interrupted once, extinguishes prompting or the digital signal after processing through described A/D converter 1100 is sent to described computing machine 900 by LED 800.
Preferably, in the anti-catoptron group of described height, also comprise the anti-catoptron of height that is positioned at a described optical line terminal.As shown in Figure 1, in the anti-catoptron group 500 of described height, also comprise the anti-catoptron of height that is positioned at a described optical line terminal, i.e. the 9th high anti-catoptron 590; In order to saving components quantity, simplify light path, preferably, be positioned at the both sides that the anti-catoptron of height of described optical line terminal and described photosensitive tube are arranged at described guide rail respectively, such as, the anti-catoptron of height being positioned at described optical line terminal is arranged at the side of described guide rail, and photosensitive tube is arranged at the opposite side of described guide rail; Like this, the anti-catoptron of height and the described photosensitive tube that are positioned at described optical line terminal also form one section of light path, work as moving object, such as dolly, and through this section of light path, blocked this section of light path, photosensitive tube outputs signal amplifier.Preferably, as shown in Figure 1, the same side that the anti-catoptron of height of described optical line terminal and described semiconductor laser are arranged at described guide rail is positioned at.
In order to saving components quantity, simplify light path, preferably, in the anti-catoptron group of described height, also comprise the anti-catoptron of height that is positioned at a described light path top.Such as, the same side that the anti-catoptron of height at described light path top and described semiconductor laser are arranged at described guide rail is positioned at.Preferably, the both sides that the anti-catoptron of height at described light path top and described semiconductor laser are arranged at described guide rail are respectively positioned at; Like this, the anti-catoptron of height and the described semiconductor laser that are positioned at described light path top also form one section of light path, work as moving object, such as dolly, through this section of light path, have blocked this section of light path, and whole piece light path is interrupted, and photosensitive tube outputs signal amplifier.
Like this, by beam of laser, point several sections of refractions, by guide rail, only need receiver, i.e. a photoresistance, can realize the light-receiving of whole piece light path; Dolly has sheltered from any Ray Of Light, i.e. any one section of light path, and photoresistance can be found out, and can calculate the time of blocking or the time interval thus, thus calculates the kinematic parameter of dolly, comprises speed or acceleration etc.Such as, as shown in Figure 1, guide rail is divided into some sections by each section of light path, comprises first paragraph guide rail 410, second segment guide rail 420, the 3rd section of guide rail 430, the 4th section of guide rail 440; Like this, after being provided with each catoptron of catoptron group, the length d3 of the length d2 of the length d1 of first paragraph guide rail 410, second segment guide rail 420, the 3rd section of guide rail 430, the length d4 of the 4th section of guide rail 440 can be determined.After guide rail put by the dolly of experiment, dolly length L, moving of car direction S is also known data, according to these data, and the time of blocking of light path or the time interval of blocking, speed or the acceleration of dolly can be calculated easily, to use as described laser timing guide rail, but, it should be noted that, these computing method or computing formula, it not the present invention's scope required for protection, the present invention is required for protection is the laser timing guide rail comprising related hardware structure, adopt this laser timing guide rail, speed or the acceleration of teaching demonstration counting of carriers can be assisted, like this, when teaching demonstration, have clear, intuitively, be easy to the effect calculated.
Finally to should be noted that; above disclosedly be only present pre-ferred embodiments; the interest field of the present invention can not be limited with this; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement; and do not depart from essence and the scope of technical solution of the present invention, still belong to the scope that the present invention is contained.
Claims (10)
1. a laser timing guide rail, is characterized in that, comprises laser power supply, semiconductor laser, guide rail, high anti-catoptron group, photosensitive tube and amplifier;
Described laser power supply connects described semiconductor laser, for providing power supply for described semiconductor laser;
Described height anti-catoptron group comprises some high anti-catoptrons, and the anti-catoptron of each described height is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described height anti-catoptron difference order-reflected, the laser of semiconductor laser, outputs to described photosensitive tube;
The output terminal of described photosensitive tube connects described amplifier;
Wherein, in the some high anti-catoptron of described height anti-catoptron group, comprise at least two to the anti-catoptron of height;
Every high a pair anti-catoptron comprises the first catoptron being positioned at described guide rail side and the second catoptron being positioned at described guide rail opposite side; One section of light path of crossing described guide rail is formed between described first catoptron and described second catoptron.
2. laser timing guide rail according to claim 1, it is characterized in that, also comprise a LED, described LED connects the output terminal of described amplifier.
3. laser timing guide rail according to claim 1, it is characterized in that, also comprise an A/D converter, described A/D converter connects the output terminal of described amplifier.
4. laser timing guide rail according to claim 3, it is characterized in that, also comprise a computing machine, described computing machine connects the output terminal of described A/D converter.
5. laser timing guide rail according to claim 1, it is characterized in that, also comprise a dolly, described dolly is arranged on described guide rail.
6. laser timing guide rail according to claim 1, it is characterized in that, described photosensitive tube is infrared photodiode.
7., according to the arbitrary described laser timing guide rail of claim 1 to 6, it is characterized in that, in the anti-catoptron group of described height, comprise at least three pairs of catoptrons.
8. laser timing guide rail according to claim 7, is characterized in that, in the anti-catoptron group of described height, comprise at least four pairs of catoptrons.
9. laser timing guide rail according to claim 8, is characterized in that, in the anti-catoptron group of described height, also comprise the anti-catoptron of height that is positioned at a described optical line terminal.
10. laser timing guide rail according to claim 9, is characterized in that, is positioned at the same side that the anti-catoptron of height of described optical line terminal and described semiconductor laser are arranged at described guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821943.0A CN104575177A (en) | 2014-12-24 | 2014-12-24 | Laser timing guide rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821943.0A CN104575177A (en) | 2014-12-24 | 2014-12-24 | Laser timing guide rail |
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| CN104575177A true CN104575177A (en) | 2015-04-29 |
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| CN201410821943.0A Pending CN104575177A (en) | 2014-12-24 | 2014-12-24 | Laser timing guide rail |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652704A (en) * | 2016-12-15 | 2017-05-10 | 中国科学院光电技术研究所 | Combined photoelectric education toy and control method |
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| CN102157100A (en) * | 2011-04-18 | 2011-08-17 | 北京建筑工程学院 | Grating diffraction demonstration teaching apparatus |
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| CN2072258U (en) * | 1990-07-18 | 1991-02-27 | 尹崇荣 | Guide rail test carriage with digital timing |
| EP0601872A1 (en) * | 1992-12-11 | 1994-06-15 | Hughes Aircraft Company | Laser rangefinder testing system incorporating range simulation |
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| CN106652704A (en) * | 2016-12-15 | 2017-05-10 | 中国科学院光电技术研究所 | Combined photoelectric education toy and control method |
| CN106652704B (en) * | 2016-12-15 | 2023-06-30 | 中国科学院光电技术研究所 | Combined photoelectric toy teaching aid and control method |
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Application publication date: 20150429 |