SU669371A1 - Device for signalling light boundary crossing - Google Patents

Description

one

The device relates to sport and can also be used in orthopedics, prosthetics and rehabilitation medicine.

A device is known for measuring the time of passage of a distance and the moment of crossing the finish line 1.

The device contains a radiation source that is optically coupled to the light receiver through a mirror mounted on the shoulder, which separates the bolt and the small treadmills, photo relay and starting gun, which includes a measuring device when fired. The athlete's crossing of the light beam at the finish line stops the time of the measuring device, thereby measuring the total travel time of the sport by changing the distance.

However, the known device does not allow to measure the time of passage of individual segments of a distance, for example, on a straight line, because it creates only one light boundary.

Closest to the proposed technical solution is a device for monitoring the intersection of the light boundary, containing a radiation source, optically

connected through the movement of the mirror, mounted on the sides of Tpacciii, to the radiation receiver, the output of which is connected to one input of the recorder 2.

This device provides control of several light boundaries, but does not allow controlling the dynamics of the movement of an object.

The goal of p1b is to expand the functionality of ycTpoiiCTBa.

To do this, a generator of reference time pulses is introduced into the device, the output of which is 1 ×) iod, pulc to the second input of the register.

The drawing shows a functional diagram of the proposed device.

The device contains a radiation source 1, the light beam 2 of which through the installation of the movement of the mirror 4 on the sides of the track 3 is connected with the radiation receiver 5, the output of which is connected to one input of the recorder 6, the generator 7 of the reference time pulses, the output of which is connected to the second input of the recorder 6 .

The mirrors create light boundaries 8 at the start and along the track of the movement of the object (athlete).

The device works as follows.

At the moment when the object crosses the first light boundary 8 at the output of the radiation receiver 5, an electric pulse appears, which includes a recorder 6, for example, a printing chrograph. The successive intersection of the object by the light edges 8 causes pulses at the output of the radiation receiver 5, the occurrences of which reflect the instant the object crosses the corresponding boundaries of the distance segments, and the time between pulses characterizes the time the object passes the corresponding distance segments

The use of a single-beam system for recording the time when a living object crosses a boundary of a given zone, created by a system of mirrors installed along the edge of a movement track, allows measuring the time it takes for an object to pass through a given zone.

Thus, the proposed device, in comparison with the existing one, makes it possible to measure with a greater accuracy the time of passage of sections of the distance; uses one light source and one

a light receiver to measure the time of passage of segments of a distance of unlimited length.

Claims (1)

1. USSR author's certificate number 229854, cl. G 07 C 1/24, 1966. 2, Summer, Photocells in industry. M.-L., SEI, 1961, p. 303, fig. 10-12.