CN204406808U - A kind of laser timing guide rail - Google Patents
A kind of laser timing guide rail Download PDFInfo
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- CN204406808U CN204406808U CN201420837668.7U CN201420837668U CN204406808U CN 204406808 U CN204406808 U CN 204406808U CN 201420837668 U CN201420837668 U CN 201420837668U CN 204406808 U CN204406808 U CN 204406808U
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- guide rail
- catoptron
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- semiconductor laser
- light path
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Abstract
The utility model provides a kind of laser timing guide rail, and it comprises laser power supply, semiconductor laser, guide rail, catoptron group, photosensitive tube and amplifier; Laser power supply connects semiconductor laser; Catoptron group comprises some catoptrons, and each catoptron is arranged at guide rail both sides respectively, and forms a light path with semiconductor laser; The laser of each catoptron difference order-reflected semiconductor laser, outputs to photosensitive tube; The output terminal of photosensitive tube connects amplifier.Like this, 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, multi-signal receiving trap can be coordinated to use, be convenient to as teaching demonstration, make Students ' Learning nature physics.
Description
Technical field
The utility model relates to the experimental design of physics teaching, in particular, and 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 utility model 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 utility model 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.
Utility model content
The utility model 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.
The technical solution of the utility model is as follows: a kind of laser timing guide rail, and it comprises laser power supply, semiconductor laser, guide rail, catoptron group, photosensitive tube and amplifier; Described laser power supply connects described semiconductor laser, for providing power supply for described semiconductor laser; Described catoptron group comprises some total reflection prisms and the anti-catoptron of height, and each described catoptron is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described 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 some catoptrons of described catoptron group, at least two pairs of catoptrons are comprised; 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.
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 described catoptron group, at least three pairs of catoptrons are comprised.
Preferably, in described catoptron group, at least four pairs of catoptrons are comprised.
Preferably, in described catoptron group, 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 utility model, 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 an embodiment of the present utility model.
Embodiment
For the purpose of this utility model, technical scheme and advantage are better described, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
An embodiment of the present utility model is, a kind of laser timing guide rail, and it comprises laser power supply, semiconductor laser, guide rail, 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 catoptron group comprises some total reflection prisms and the anti-catoptron of height, and each described catoptron is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described 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 some catoptrons of described catoptron group, at least two pairs of catoptrons are comprised; 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 utility model scopes required for protection, and the utility model 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 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.
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, each described plane mirror becomes miter angle with described guide rail to high anti-catoptron respectively, and in every a pair plane mirror, 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 a certain plane mirror damages, can direct general mirror act for sb.In order to solve the problem of installing 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 stationary mirror and reflection direction.Like this, easy for installation, light path assembly is simple.
As shown in Figure 1, an embodiment of the present utility model is, a kind of laser timing guide rail, and it comprises laser power supply 100, semiconductor laser 200, guide rail 400, 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 described catoptron group, such as, outputs to the first prism 510.Described catoptron group comprises some total reflection prisms and the anti-catoptron of height, and each described catoptron is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described catoptron difference order-reflected, the laser of semiconductor laser, outputs to described photosensitive tube; As shown in Figure 1, described catoptron group comprises the first prism 510, second prism 520, the high anti-catoptron 540 of the anti-catoptron of third high the 530, the 4th, the 5th prism 550, the 6th prism 560, the 7th high anti-catoptron 570, the 8th high anti-catoptron 580 and the 9th high anti-catoptron 590, each described catoptron 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 first prism 510, second prism 520, the high anti-catoptron 540 of the anti-catoptron of third high the 530, the 4th, the 5th prism 550, the 6th prism 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 each catoptron to described photosensitive tube from described semiconductor laser.
Wherein, in some catoptrons of described catoptron group, at least two pairs of catoptrons are comprised; 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.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 prism 510 and the second prism 520, the anti-catoptron of third high 530 and the 4th high anti-catoptron 540, the 5th prism 550 and the 6th prism 560, the 7th high anti-catoptron 570 and the 8th high anti-catoptron 580; Wherein, the first prism 510, the 4th high anti-catoptron 540, the 5th prism 550 and the 8th high anti-catoptron 580 are positioned at described guide rail side, as described first catoptron; Second prism 520, the anti-catoptron of third high the 530, the 6th prism 560 and the 7th high anti-catoptron 570 are positioned at described guide rail opposite side, as described second catoptron.Between first prism 510 and the second prism 520, between the anti-catoptron of third high 530 and the 4th high anti-catoptron 540, between the 5th prism 550 and the 6th prism 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 described catoptron group, also comprise the anti-catoptron of height that is positioned at a described optical line terminal.As shown in Figure 1, in described catoptron group 500, 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 described catoptron group, also comprise one and be positioned at the total reflection prism at a described light path top or high anti-catoptron.Such as, the same side that the total reflection prism at described light path top or high anti-catoptron and described semiconductor laser are arranged at described guide rail is positioned at.Preferably, the both sides that the total reflection prism at described light path top or high anti-catoptron and described semiconductor laser are arranged at described guide rail are respectively positioned at; Like this, be positioned at the total reflection prism at described light path top or high anti-catoptron and described semiconductor laser and also form one section of light path, work as moving object, such as dolly, through this section of light path, has blocked this section of light path, 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 utility model scope required for protection, the utility model 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 the utility model preferred embodiment, the interest field of the utility model can not be limited with this, above embodiment is only in order to illustrate the technical solution of the utility model but not restriction to the utility model protection domain, although be explained in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and do not depart from essence and the scope of technical solutions of the utility model, still belong to the scope that the utility model is contained.
Claims (10)
1. a laser timing guide rail, is characterized in that, comprises laser power supply, semiconductor laser, guide rail, catoptron group, photosensitive tube and amplifier;
Described laser power supply connects described semiconductor laser, for providing power supply for described semiconductor laser;
Described catoptron group comprises some total reflection prisms and the anti-catoptron of height, and each described catoptron is arranged at described guide rail both sides respectively, and forms a light path with described semiconductor laser; Wherein, described in each described 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 some catoptrons of described catoptron group, at least two pairs of catoptrons are comprised;
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.
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, described laser timing guide rail also comprises a computing machine, and 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 described catoptron group, comprise at least three pairs of catoptrons.
8. laser timing guide rail according to claim 7, is characterized in that, in described catoptron group, comprise at least four pairs of catoptrons.
9. laser timing guide rail according to claim 8, is characterized in that, in described catoptron group, 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 |
|---|---|---|---|
| CN201420837668.7U CN204406808U (en) | 2014-12-24 | 2014-12-24 | A kind of laser timing guide rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420837668.7U CN204406808U (en) | 2014-12-24 | 2014-12-24 | A kind of laser timing guide rail |
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| CN204406808U true CN204406808U (en) | 2015-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575175A (en) * | 2014-12-24 | 2015-04-29 | 惠州学院 | Laser timing guide rail |
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- 2014-12-24 CN CN201420837668.7U patent/CN204406808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575175A (en) * | 2014-12-24 | 2015-04-29 | 惠州学院 | Laser timing guide rail |
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