RU1771422C - Device for training throwers - Google Patents

Abstract

SUMMARY OF THE INVENTION: capacitive sensors mounted on a shell in its center (disk or spear) are movable capacitor plates mounted on pressure membranes which are covered by vacuum pylons connected to guide ribs of air flow passage. 6 ill.

Description

The device relates to sports equipment, in particular to simulators equipped with sound signals.

A device for training throwers is known, comprising a throwing projectile interacting with a throwing force sensor, an indicator, characterized in that, in order to improve usability, the sensor is made in the form of a movable core placed in the inductor, and measurement generators are additionally introduced into the device frequency and reference frequency, and the output force sensor is connected to the measured frequency generator, the output of which and the output of the reference frequency generator are connected to the mixer, the output connected to the indicator.

The device described above allows you to control the speed of the projectile by increasing the centrifugal acceleration, which is reflected in the measurement of the pitch (frequency) of the sound signal during the unwinding of the projectile.

However, after the projectile is released, the thrower can no longer control its flight speed, because there is no flight speed control device on the shell.

The aim of the invention is to increase the efficiency of training by measuring the speed of discus and spear throwing.

This goal is achieved by the fact that the speed sensor is made in the form of a fixed and movable plate of a capacitor located on a flexible membrane mounted on a projectile surface covered with pylons connected to the guiding ribs.

In FIG. 1 - shows the location of the sensor in the center of the projectile (disk).

In FIG. 2 shows the arrangement of pressure discharge pylons with guiding ribs for the passage of air flow.

In FIG. 3 - functional oem of the device.

In FIG. 4 - another embodiment of the sensor on the projectile (spear)

Fig. 5 is a clamp for securing.

In FIG. 6 is an embodiment of membranes in the form of profile curved spring metal plates.

The device for training throwers contains a shell 1, in particular a disk or a spear, in the center of which, in the recesses on both sides, are mounted capacitive sensors 2 containing fixed capacitor plates 3 and movable capacitor plates 5 glued to the pressure membrane 4, over which are mounted pylons, 6 pressure relief,

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connected to the guide ribs 7 for the passage of air flow. The capacitive sensor 2 is connected to the inductive circuit 8, the frequency generator 9, an additional generator 10, a mixer 11, an amplifier 12, a sound indicator 13.

The inventive device for training throwers works as follows.

The thrower takes the projectile 1, in particular the disc, into the hand and, according to the rules of the competition, starts accelerating the projectile 1. The air flow moving along the guiding ribs 7 is discharged according to Zhukovsky’s law, according to which the lifting force arises due to the asymmetry around the wing having a plano-convex profile and the associated pressure difference due to the difference in the circulation velocity of the air flow along the flat surface of the pylon 6 and the convex sides of the guide ribs 7 and sucks the pressure membrane 4 from the the movable capacitor plate 5 on it. The distance between the stationary capacitor plate 3 and the movable capacitor plate 5 will increase, the more the vacuum will be, therefore, it will change, i.e. decrease capacitance

2 of the inductive circuit 8, which leads to a change in the frequency of the generator 9, the frequency of the additional generator 10 remains unchanged. The signals from both generators 9 and 10 are fed to the mixer 11, the difference frequency from the mixer 11 is supplied to the amplifier 12 connected to the sound indicator 13, in particular with headphones.

Another variant. The device for training throwers contains a shell 1, in particular a spear, in the center of which a speed and acceleration sensor 2 is installed, consisting of two opposing membranes

3 pressure with capacitor plates 4 placed thereon, casing 5 and clamp 6.

The device for training the throwers works as follows: the air flow, the passage between the opposing pressure membranes 3, draws the membranes 3 to each other due to the discharge and thereby brings the capacitor plates 4 closer, thereby changing the frequency of the generator 9 (see Fig. 3) and the frequency of the auxiliary generator 10 remains unchanged. The signals from both generators 9 and 10 are fed to the mixer 11, then to

amplifier 12 and sound indicator. 13.

The membranes can be made in the form of profile curved spring metal plates.

During the acceleration of the projectile 1, the sound signal at the output of the sound indicator 13 changes accordingly in pitch (in frequency). By the time the shell reaches maximum acceleration, the sound tone reaches its maximum height and

after methane missile, i.e. after the projectile takes off from the hand and its flight along the trajectory, the sound indicator 13 will make it possible to judge the velocity of the projectile by keeping the pitch. Longer in duration

the sound signal collected during the acceleration of the projectile-1 (pitch) is stored, the longer the projectile travel, and therefore, the better the throwing, the higher the result.

Using a sound controller, the controller can learn the necessary techniques.

Claims (1)

The claims A device for training throwers comprising a projectile for throwing with a speed sensor connected to a generator of a measured frequency connected to a generator of a reference frequency to the input of the mixer, the output of which through an amplifier is connected to a sound indicator, characterized in that, in order to increase the efficiency of the training by measuring the speed of the disc and spear, the speed sensor made in the form of a fixed and movable plate of a capacitor located on a flexible membrane mounted on a projectile surface covered with pylons connected to the guiding ribs. Fig L 6 # Fm. 3. F. U Fs / t s Fig (