CN2499917Y

CN2499917Y - Flat throw test instrument

Info

Publication number: CN2499917Y
Application number: CN 01249708
Authority: CN
Inventors: 黄新万
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-14
Filing date: 2001-09-14
Publication date: 2002-07-10
Anticipated expiration: 2011-09-14

Abstract

The utility model relates to a physical experimental device, specifically a horizontal projectile motion experimental instrument, which consists of a computer timing controller and a horizontal projectile motion experimental device. The device is mainly characterized in that a plurality of vertical and horizontal motion control photogate groups, and the photogates form an IR measure and control plane. The utility model can be used for quantitatively studying horizontal projectile motion, has convenient operation, and is suitable for experiment and demonstration.

Description

Flat parabolic experimental instrument

One, technical field:

The utility model is a kind of physics facility a---flat parabolic experimental instrument.

Two, background technology:

At present, the experimental technique of research level throw motion rule has: 1, utilize the trace method to study its movement locus; 2, utilize its characteristics of motion of photoflash quantitative examination; 3, utilize level throw motion to decompose its characteristics of motion of instrument qualitative analysis.First method can only its movement locus of qualitative explanation, can not study the laws of motion.Second method can quantitative test the level throw motion rule, analyze deep, effective, but experimental facilities complexity, price height, operation easier are big, can only carry out in the darkroom, therefore are difficult to popularize.The ready-made photo that has taken commonly used in the teaching, the student can not test in person, and the teacher is bad to demonstrate.The third method is utilized control methods indirect analysis level throw motion, and this method still belongs to a kind of quilitative method.

Three, summary of the invention:

The purpose of this utility model is to provide a kind of movement locus signal with level throw motion to send into the flat parabolic experimental instrument that the computer timing controller shows.Just horizontal throwing in the level throw motion is become signal in the different moment and different position and send into the computer timing controller and store and show, so that the characteristics of motion of quantitative test horizontal throwing.This device can also be studied the momentum conservation in the collision movement.

The technical solution of the utility model is: be made up of computer timing controller peace impeller ramming experiment device, it is characterized in that: be provided with many group tangential movement measuring light electric switches and many group vertical motion measuring light electric switches on the framework of flat parabolic experimental device; Tangential movement measuring light electric switch and vertical motion measuring light electric switch form infrared ray observing and controlling plane in framework; Every group of photogate is made up of an illuminator and a receiver, is oppositely arranged; Illuminator is connected with the computer timing controller by the multi-core power line; Receiver is connected with the computer timing controller by the polycore cable signal wire.During experiment, when when horizontal throwing enters the framework of flat parabolic experimental device from gliding groove in, down moving, with successively block vertically and horizontal direction respectively organize photogate, when blocking first photogate, start timer, constantly will produce control signal corresponding in different being in the light, just write down time numerical value this moment when the computer timing controller is received this signal, simultaneously the sequence number of the photogate that also record is relevant.Just can analyze the characteristics of motion of horizontal throwing on both direction quantitatively according to the vertical direction of record and the time of horizontal direction.

Four, description of drawings:

Fig. 1 is the utility model flat parabolic experimental device synoptic diagram;

Fig. 2 is a computer timing controller shell synoptic diagram;

Fig. 3 is Fig. 2 back synoptic diagram.

Among the figure: 1-horizontal throwing, 2-gliding groove, 3-framework, 4-illuminator, 5-multi-core power line, 6-receiver, 7-polycore cable signal wire, 8-numeral display window.

Five, embodiment:

As shown in Figure 1, flat parabolic experimental device of the present utility model is made of gliding groove 2, framework 3, and gliding groove is arranged on the top of framework, and the junction of gliding groove and framework is provided with breach, and horizontal throwing enters in the framework plane from breach during experiment.On the upper and lower frames of framework, 3 groups of tangential movement measuring light electric switches are set, promptly upper ledge is provided with 3 illuminators 4, and the lower frame correspondence is provided with 3 receivers 6.3 vertical motion measuring light electric switches are set on the frame of the left and right sides of framework, promptly at right frame 3 illuminators are set, left frame correspondence is provided with 3 receivers.6 groups of photogate form an infrared ray observing and controlling plane in frame.The illuminator of described 6 groups of photogate inserts the computer timing controller by multi-core power line 5, and receiver inserts the computer timing controller by polycore cable signal wire 7.During experiment, horizontal throwing 1 by gliding groove to downslide, when entering framework, at first will cover near the light of one group of photogate on the left side, along with horizontal throwing down moves, shelter from the light of respectively organizing photogate in succession, show by polycore cable signal wire input computer timing controller at these different signals that the moment produced, then according to the data of these records, but the characteristics of motion of quantitative test horizontal throwing just.

The utility model also can be used for doing collision experiment, and method is as follows:

A plastic beads is put at lower port place at gliding groove, and make bead static, another quality is bigger, the identical Metal Ball of size glides from a certain eminence of gliding groove, two balls will bump in the port, two balls are made level throw motion with priority, and priority shading light electric switch in infrared ray observing and controlling plane, computer timing controller will write down time and the corresponding photogate sequence number of two balls at different photogate place.Can obtain speed after the collision of two balls according to the time value of horizontal direction and the distance between photogate.Before the collision, the speed of the ball that quality is less is 0, allow the bigger ball of quality glide from original equal height is past separately, do not collide, because level throw motion is made in heavy ball this moment, therefore can obtain its horizontal velocity, and the speed approximately equal before this speed and the collision of this ball, therefore, utilize whether conservation of momentum that these data can verify the collision ball.

Claims

1, a kind of flat parabolic experimental instrument is made up of computer timing controller peace impeller ramming experiment device, it is characterized in that: be provided with many group tangential movement measuring light electric switches and many group vertical motion measuring light electric switches on the framework of flat parabolic experimental device; Tangential movement measuring light electric switch and vertical motion measuring light electric switch form infrared ray observing and controlling plane in framework; Every group of photogate is made up of an illuminator and a sensor, is oppositely arranged; Illuminator is connected with the computer timing controller by multicore infrared ray power supply line; Sensor is connected with the computer timing controller by the polycore cable signal wire.

2, flat parabolic experimental instrument according to claim 1 is characterized in that: photogate is 6 groups, is provided with 3 groups of vertical motion measuring light electric switches on upper and lower frames, is provided with 3 groups of tangential movement measuring light electric switches on the frame of the left and right sides.