A custom partition RBI counter

Abstract

The invention discloses a self-defined partition counter, which includes a slider, a reed, a spring, a spacer ball and a striker. The slider is installed in a vertical guide groove and the back is driven to move back and forth in a straight line. The lower surface of the slider One end of the spring is connected, and the other end of the spring is connected with the spacer ball. The reed leaves are left and right symmetrical and form elastic narrows on both sides of the spacer ball, and the striker is installed downwards with the spacer ball. The reciprocating lifting movement of the slider can be completed by the basic structure of the electromagnetic dotting counter in the prior art. The rod head at one end of the electromagnet is connected to the upper surface of the slider of the present invention, and the electromagnet is subjected to alternating current to generate alternating current at its end. The magnetic pole is attracted by the fixed permanent magnet and oscillates up and down to complete the up and down reciprocating motion. The bottom ends of the reeds extend downward and are connected to form a ring-shaped guide hole, and the striker passes through the guide hole downwards.

Description

technical field [0001] The invention relates to the field of motion analysis equipment, in particular to a self-defined partition dotting counter. Background technique [0002] A dot counter, also known as a dot timer, is a device that produces small dots on a paper tape at a certain time interval, and is often used in physical experiments to analyze the state of motion of objects. The object drags a paper tape to move, and the dots printed on the paper tape show the position of the object at different times. [0003] In the existing technology, electromagnetic counters and electric sparks are commonly used. These two generally do not have the function of frequency conversion. If the dot frequency needs to be changed, it needs to be changed by changing the frequency of the input current. However, not only the frequency converter components are large, It is not conducive to integration in a compact dot counter. Moreover, the frequency of the frequency converter is not only f...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, electromagnetic counters and electric sparks are commonly used. These two generally do not have the function of frequency conversion. If the dot frequency needs to be changed, it needs to be changed by changing the frequency of the input current. However, not only the frequency converter components are large, It is not conducive to integration in a compact dot counter. Moreover, the frequency of the frequency converter is not only fluctuated by its own reasons, but also by the interference of the surrounding electromagnetic field, resulting in frequency drift and speed regulation accuracy.

[0004] In addition, the contact between the striker of the electromagnetic dot counter and the paper tape is carried out by electromagnetic attraction, such as figure 1 As shown, it is the structure of the basic electromagnetic dotting counter. The vibration of the striker is roughly sinusoidal. The bottom of the striker cannot rebound during the contact period with the paper tape. That is to say, the friction between the striker and the paper tape is relatively large, which will affect the paper. belt movement

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