Laser timing guide rail

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 [0001] The invention relates to the experimental design of physics teaching, in particular to a laser timing guide rail. Background technique [0002] Some common physical kinematics experimental teaching aids have not been improved for many years. For example, the Chinese patent titled digital timing rail experiment trolley, whose application number is 90216765.0, is a digital timing rail experimental trolley for measuring time in ordinary physical kinematics experiments. The feature of the present invention is that two slidable switches for controlling the second function of the electronic watch are installed in the shallow groove on the edge of the guide rail plate. A control element for realizing the control of the second function switch used in conjunction with the control switch of the second function switch of the electronic watch is housed on the bracket, and a single-core jack is connected to the second function switch of the electronic watch in para...

AI Technical Summary

Problems solved by technology

[0002] Some ordinary physical kinematics experimental teaching aids have not been improved for many years. For example, the Chinese patent named digital timing guide rail experiment trolley, its application number is 90216765.0, a digital timing guide rail experimental trolley for measuring time in ordinary physical kinematics experiments

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