RU215029U1 - A device for non-contact control of the quantity and quality of push-ups from the floor in automatic mode - Google Patents

Abstract

The utility model relates to the field of medicine and medical technology, namely to devices designed to control the number of push-ups from the floor when judging sports competitions of one of the types of all-around TRP - flexion and extension of the arms in emphasis while lying on the floor and on other horizontal surfaces, as well as for checking and evaluating the physical fitness of students, conducting physical training classes in educational institutions and organizations, scientific observations and experiments in this sport.

The technical result is to increase the objectivity of control over the exercise by taking into account push-ups performed only with the maximum amplitude.

The proposed device consists of an inverted U-shaped metal frame, which is made in the form of two vertical racks, rigidly interconnected at the base and equipped with two movable pairs of emitter - photodetector, each pair of emitter - photodetector is located so that the light coming from the emitter to the photodetector, oriented parallel to the floor, at the same time, a matching unit is installed on the rack with photodetectors, which is designed to receive signals from the photodetectors and to transmit the processed signal to the pulse counter with a digital display. The matching block includes circuits with separate power supply, consisting of relays with normally open and normally closed contacts.

Description

The utility model relates to the field of medicine and medical technology, namely to devices designed to control the number of push-ups from the floor when judging sports competitions of one of the types of all-around TRP - flexion and extension of the arms in emphasis while lying on the floor and on other horizontal surfaces, as well as for checking and evaluating the physical fitness of students, conducting physical training classes in educational institutions and organizations, scientific observations and experiments in this sport.

The rules for performing this exercise provide: from the lying position (the distance between the arms is shoulder width apart, the torso is straight), at the “Start” command, the performer must bend his arms until the angle in the elbows of the hands makes a right angle, extending his arms, take the position of the lying position, fix stay still for one second and continue the exercise. Touching the floor with the hips and stomach is prohibited. The receiver of the exercise (judge, fizruk) announces the score of each completed movement. The announcement of the score is at the same time a permission to continue the exercise. In case of violation of the rules of the exercise, the score is not made.

Previously, counting judges (physical education instructors, head of standards) were involved as the receivers of the exercise, who visually determined the correctness of the exercises and kept their score.

The disadvantage of this method of refereeing is that it is subjective, which is why it does not always really reflect the physical fitness of the performer. Due to the increase in the speed of repetitions, it becomes difficult for the judge-counters to correctly fix the execution of the exercise, since he has to mentally remember not only which repetition was done correctly and which was not, but also continuously count the number of repetitions made. Therefore, the subjective method of checking the correctness of push-ups gives the participant an estimate with a large error.

A device for controlling push-ups from the floor is known (patent for a utility model of the Russian Federation No. 170016 U1, IPC A63V 21/00 / a device for controlling push-ups from the floor in the prone position // Bogatyrev A.S. publ. 11.04.2017), made in the form base with two contacts appropriately located on it, when at least one of them is closed, an electric circuit is closed, including a power source connected in series, contacts connected in parallel and a source of a light signal displayed on a light panel, additionally contains a reversible counter, the first input of which is connected through contacts connected in parallel with a power source, the second input - with a power source through serially connected additionally inserted button for the judge.

The disadvantage of the described device is the following: counting the number of flexion and extension of the arms in the lying position is carried out subjectively, because the device does not automatically control the full extension of the arms and touching the floor of the hips or abdomen.

It is also known a device for controlling the number of flexion and extension of the arms in the lying position (utility model patent of the Russian Federation No. 111006 MPK A63V 21/00 / Device for controlling the number of flexion and extension of the arms in the lying position // Chernyshev S.V., Chernyshev V.V. ., Savchenko O.A., Rud M.Yu., Rud A.A., Gotyur I.A., publ. 10.12.2011), containing a fixed platform and a vertical platform fixed on it. A hinge connected to the movable platform is fixed at the upper end of the rack. Between the movable and fixed platforms, on the basis of the fixed platform, there is a spring, a limiter designed to limit the movement of the movable platform, an emitter and an optoelectronic key. On the inner side of the movable platform, an opaque shutter is fixed, placed in such a way that when the movable platform is lowered, it falls into the target between the emitter and the optoelectronic key. When bending the arms, the chest is pressed against the movable platform to the limit. Pressing the movable platform lowers the opaque shutter fixed on it, which, at the moment of touching the movable platform of the limiter, falling into the target between the emitter and the optoelectronic key, blocks the beam, thereby changing the logical state at the output of the optoelectronic key. As a result, the value on the counting indicator changes.

The disadvantage of the model is that the design does not provide objective control over the exercise (the value of the counting indicator increases when the chest is pressed against the movable platform, even with the minimum amplitude of push-ups).

The closest technical solution adopted for the prototype is a device for controlling push-ups from the floor (utility model patent of the Russian Federation No. 156612 U1 IPC A63V 21/00 / device for controlling the number of flexion and extension of the arms in the lying position // Ovchinnikov V.A., Kayrgaliev D., Mogutin R.I., Kormakov A.E., Melnikov I.N., Pichkhidze S.Ya., Zakharchenko M.Yu., Loginov R.G., Vasiliev D.V., Ponomarenko D.V. ., publ. 11/10/2015), containing parallel to each other fixed and movable platforms, fastened together by a bracket made of flexible material, sensors that respond to the load of the movable platform, made in the form of microswitches without fixation, connected in parallel, a digital block , sound and light indication, characterized in that an additional movable platform is introduced into it, fastened with brackets made of flexible material with a fixed platform, sensors made in the form of microswitches without fixation, connected to each other in parallel, real controlling and fixing the load on the additional movable platform, an executive signal generation unit, the inputs of which are connected to the microswitches of both movable platforms, and the outputs are connected to the digital, sound and light indication unit, and the power supply unit connected to the microswitches of both movable platforms, the executive signal generation unit and a block of digital, sound and light indication.

The disadvantage of the prototype: the device does not provide objective control over the exercise, when using it does not take into account the full extension of the arms during the exercise, the assessment of the physical fitness of the performer may be challenged.

The objective of the utility model is to create a device for controlling the quantity and quality of flexion and extension of the arms in the lying position, which provides an increase in the objectivity of control over the exercise of flexion and extension of the arms in the lying position.

The technical result is to increase the objectivity of control over the exercise by taking into account push-ups performed only with the maximum amplitude.

The problem is solved by tracking the position of the push-up body in the position when the arms are straightened and in the position when the arms are bent at the elbows at an angle of 90 degrees, by registering the intersection of the control lines formed by a source of coherent optical radiation (laser) and an optical radiation sensor (photoresistor) located in such a way. so that from one optical emitter, light enters only one and the same optical sensor. Each pair of emitter and sensor is positioned so that the light coming from the emitter to the sensor is parallel to the floor. The light rays from the emitters themselves are always parallel to each other and are in the same plane perpendicular to the plane of the floor. The height of the position of the emitters is chosen in such a way that during the push-ups, a person in a position where his arms are straightened crossed two laser beams at once. And in the position when the arms were bent at the elbows at an angle of 90 degrees, the subject went out from under both control lines. Optical sensors register the barrier interruption of laser radiation in the form of pulses of different durations. Interruption of the incoming light flux from lasers to optical sensors is created by a person performing push-ups from the floor.

Both optical sensors are connected to an electronic matching unit, from the output of which the signal is fed to the pulse counter. At the same time, the matching unit is configured so that the next count unit will be supplied only if two pulses come in turn from two sensors to the matching unit.

The drawings show a device for non-contact control of the quantity and quality of push-ups from the floor in automatic mode: Fig. 1 is a block diagram of the stand indicating the location of the optical lines. Fig. 2 - diagram of the matching unit. Fig. 3 is a photograph of a push-up counting stand.

The proposed device for automatic control of the quantity and quality of push-ups from the floor consists of an inverted U-shaped metal frame 4, which is made in the form of two vertical racks rigidly interconnected at the base and equipped with two movable pairs of emitter 3 - photodetector 2, each pair the emitter - photodetector is located so that the light coming from the emitter to the photodetector is oriented parallel to the floor, while the matching unit 1 is installed on the rack with photodetectors, which is designed to receive signals from the photodetectors and to transmit the processed signal to the pulse counter with a digital display. Matching block 1 includes circuits with separate power supply, consisting of relay 5 with normally open and normally closed contacts.

The device works as follows. In the initial position, when the arms are straightened, a person creates a barrier with his own hands for the passage of the light flux to the optical sensors. At this moment, no signals are sent from the sensors to the matching unit. The matching block itself is made of 4 separate circuits interacting with each other through various relays, including self-locking relays. When a person starts to perform a push-up exercise and directs his body to the lower position, then first a light signal will go to the upper optical sensor, which will make relay 1 turn on, the contacts of which will turn on the second circuit and the switching impulse itself will come to the pulse counter as a result of the exercise. And also the contacts of relay 1 will prepare the third circuit for turning on and processing the signal from the lower sensor. Then, due to the self-blocking relay 2, the circuit will block the perception of further impulses coming from sensor 1. When the person reaches the lower position, a signal begins to arrive at sensor 2, which will turn on relay 4, the contacts of which will turn on circuit 3. Circuit 3 is also self-blocking due to executive relay 3. At the same time, the circuit provides relay 5 with normally closed contacts located in circuit 2. And turning on relay 5 will turn off the power to circuit 2, which will restore the perception of additional incoming pulses from sensor 1. Returning the person to their original position (arms are straightened ) will lead to an interruption of the signal to sensor 1, which will turn off relay 1 and circuit 3, and also turn on circuit 2. Returning the person to its original position leads to the initial position of all circuits and their readiness for reading the next repetition of the exercise. In such a matching block, due to the self-blocking of the circuits, the reading of signals from only one incoming sensor is excluded. Only the exercise that was performed as deep as possible in amplitude with the release of the lumen for the two sensors and their subsequent darkening in the reverse order is counted.

Example. The device shown in Fig. 3 - stand for automatic control of the quantity and quality of push-ups from the floor, consisting of a metal frame assembled from pipes with a diameter of 25 mm. The installation height is 1.06 m, width 1.6 m, thickness 0.45 m. Vertical racks consist of two parallel pipes located at a distance of 0.1 m, along which optical radiation receivers 2 and optical radiation sources 3 are moved, rulers are located between the pipes to control and coordinate the height of sources and receivers of optical radiation. For stability, the racks are connected by two horizontal pipes 1.3 m long. The stand can be adjusted in height from 12 to 84 cm. FD256 photodiodes are used as optical radiation receivers, and laser diodes with a wavelength of 650 nm and an output power of 2 mW are used as sources. Matching unit 1 includes a processing circuit built on the basis of the ruichi 833h relay and mp16a diodes, the signal from which is fed to the pulse counter with a digital display SI-10.

Claims (2)

1. A device for non-contact control of the quantity and quality of push-ups from the floor in automatic mode, containing an inverted U-shaped metal frame, made in the form of two vertical racks, rigidly interconnected at the base and equipped with two movable pairs of emitter - photodetector, each pair the emitter - photodetector is located so that the light emanating from the emitter to the photodetector is oriented parallel to the floor, while a matching unit is installed on the rack with photodetectors, designed to receive signals from the photodetectors and to transmit the processed signal to the pulse counter with a digital display. 2. The device according to claim 1, characterized in that the matching unit includes circuits with separate power supply, consisting of relays with normally open and normally closed contacts.

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