BG64134B1 - Device for the control of kinematic, dynamic and energy characteristics of the rowing cycle - Google Patents

Abstract

The device is used for electronic data processing basically in the process of carrying out and control of training in rowing and in other sports. By it the efficiency of the process of teaching and training can be assessed for efficiency of the rowing cycle by means of recording some of its basic characteristics. The device comprises a tenso-converter (1), mounted to oar (3), connected, by means of a tenso-amplifier (2) to one of the inputs of a data processing digital unit (6). To another input of the digital unit (6) keyboard (4) is connected, and to its outputs and indicator attachment (7), interface (8) and sound reproducing unit (9) are coupled. Unit (6) includes a microcontroller with a memory device, current time recorder, analogue and digital inputs and outputs. In unit (6) the three outputs of a 3-component accelerometer (5) enter. For telemetric connection, radio frequency transceiver (10) is used, which exchanges information data between unit (6) and an analogical radio frequency transceiver (11), found at desk (16) of the trainer. 3 claims, 1 figure

Description

Technical field

The invention is in the field of electronic information processing and relates to a device for measuring the kinematic characteristics of the rowing boat, namely acceleration, speed and travel, as well as to measure and model the applied force in the handle of the rowing handle and to measure the mechanical work done by the rower.

BACKGROUND OF THE INVENTION

A device for determining the applied rowing force (2) is known, which consists of a strain gauge, the output of which is connected via a divider to a force determination unit, the first output of which is connected through a logic element to an indicator for the presence of a rowing force. and the other three inputs through a logic block, respectively, to the effort indicator below the norm, to the effort indicator above the norm, and to the effort indicator in the norm. The device also contains a functional conversion unit composed of a linear and non-linear potentiometer. The output of the first operational amplifier is fed through a buffer to the telemetry output for the angle of rotation of the paddle, as well as to the input for determining the angle, to the other input of which is included with its output a block for setting the angle. The output of the angle determination block is connected to the input of a logic block. The output of the second operational amplifier is connected to the telemetry output for effective force and to the input of the power determination unit. In this case, the force setting unit is designed as an effective force setting unit.

The disadvantage of the device is that in its operation it registers only the force applied by the rower, without being able to take into account the time of its action and the effect on the kinematic characteristics (acceleration, speed and distance traveled) of the rowing boat.

SUMMARY OF THE INVENTION

The object of the device of the invention is to determine the rowing effort applied, while simultaneously measuring the time of application of the force and monitoring the effect on acceleration, speed and distance traveled by the rowing boat, such as a way to carry out a control on some basic features of the rowing cycle.

The task is solved by a device for controlling the kinematic, dynamic and energy characteristics of the rowing cycle. 15 The apparatus consists of a strain gauge mounted on the boat mast, the output of which is connected to a digital data processing unit. The strain gauge is connected to one of the inputs of the digital data processing unit. Keyboards and the three outputs of a three-component accelerometer are connected to other inputs of the information processing unit. An indicator plug, an interface for connecting to other elements of the device, and a sound reproducing unit are connected to the output of the digital data processing unit 25. The digital data processing unit includes a microcontroller with a 30 memory device and a current timer (timer), analog and digital inputs and outputs. An RF transmitter is connected to the interface, which is in connection with an analog radio frequency 35 transceiver located with the trainer (researcher).

The advantages of the device are that it allows to determine the efficient work moving the boat forward as well as 40 and to determine the limits of the most complete conversion of the useful work done by the rower. The efficiency of the training process is also improved by providing feedback to the rower and assessing the efficiency of the rowing cycle through its energy characteristics: work (power) and momentum of force along the three axes.

EXAMPLES 50

An exemplary embodiment of the device for controlling the kinematic, dynamic and energy characteristics of the rowing cycle illustrating the invention is shown in Figure 1 as a block diagram. In this case, a strain gauge 1. is attached to the oar 3. The latter is connected via a strain gauge 2 to one of the inputs of the digital information processing unit 6. The keyboard 4 is also connected to the other inputs of the digital information processing unit 6. the digital information processing unit 6 is connected an indicator plug 7, an interface 8 and a sound production unit 9. The device is powered by a battery power unit that is integrated into the information processing unit 6. The latter includes a microphone memory troller, current timer, analog and digital inputs and outputs. It operates under the management of a specialized program. The digital data processing unit 6 includes the three outputs of the three-component accelerometer 5 oriented along the respective rows of the rowing boat and to which the current acceleration value of the respective axis is applied. In this way, accelerations in a coordinate system of three mutually perpendicular axes are taken into account, one of which is oriented along the longitudinal axis of the boat. The digital data processing unit 6, through digital operations in real time, produces instantaneous values of the speed and distance traveled along the respective axis. At any given time, the digital data processing unit 6 produces a data packet that includes:

- the current value of the force applied by the rower;

- the current value of time recorded from some starting point;

- the current value, respectively, of the accelerations on the three axes, of the speeds on the three axes and of the displacement on the three axes.

The action of the device is the following: when scooping with the paddle 3, the full force P applied to its handle by the paddler deforms it. The strain gauge 1 produces a full electric power proportional to P. The electric signal amplified by the strain gauge 2 is fed to the input of the digital data processing unit 6. The keypad 4 to the digital data processing unit 6 sets the values of the set rowing force and the set time to maintain this power. The three inputs of the accelerometer 5 are connected to other inputs of block 6. Through the set program, the digital data processing unit 6 provides such a work algorithm that calculates all the necessary parameters for each rowing cycle, namely, the time for maintaining the set force ( reaching or underperforming) and work done. The algorithm can be changed by its basic parameters or completely through the interface 8. Changes in the basic parameters can be done manually via the keyboard 4. The indication 7 in this case is used to visualize and control the process of changing the 4 parameters set by the keyboard. It also indicates emergency situations and internal states of the system. The sound-producing unit 9 is used for direct communication with the rower, to whom it indicates whether it is within the set parameter, whether it exceeds or is below them. For telemetry, a radio transmitter 10 is used which exchanges information data between the digital data processing unit 6 and a similar radio transmitter 11 located at the trainer's remote 16 (researcher). At the same time, the transceivers maintain a duplex conversational link between the coach and rowers. This allows for feedback as the coaching console displays in real time some of the information that characterizes the efficiency of the rowing cycle.

As a result of the above processing of information, opportunities are opened for action to improve the effectiveness of the training process. First of all, it is possible to provide feedback to the rower. This connection is audible, with the power setting range and the time to maintain this force determined by the keypad 4. If the rower does not exit from the optimum rowing mode (force and time) so set, no sound signal is output. Conversely - if the rower exits rowing mode, an acoustic signal sounds. The audio frequency has two values - low and high. This depends on the fact that there is an exceeding or shortfall of the optimum mode limits.

Another possibility is to evaluate the efficiency of the rowing cycle by its energy characteristics: operation (power) and momentum of force on the three axes.

Application of the invention

The device is mainly used in the process of realization and management of rowing training. Under certain conditions, the device is applicable in other sports. It serves as a means of obtaining objective information about the quality of athletes' motor activity, of exercise load during functional diagnostics, and as a means of controlling the level of physical and technical training of competitors.

Claims (3)

A device for controlling the kinematic, dynamic and energy characteristics of a rowing cycle, consisting of a boat mounted on the rotor (3) of a strain gauge (1), the output of which is connected to an information processing unit whose other input is a block for setting the effective force, characterized in that the strain gauge (1) is connected to one of the inputs of a digital information processing unit (6) to other inputs to which a keypad (4) is connected, the three outputs of the three-component accelerometer (5), and to ex audits on the digital unit processing information (6) are connected to indicator plug (7), an interface (8) and reproducing unit (9). A device according to claim 1, characterized in that the digital information processing unit (6) includes a microcontroller with a memory device and a current time meter (timer), analog and digital inputs and outputs. Device according to claim 1, characterized in that a radio transceiver (10) is connected to the interface (8), which is in connection with a similar radio transceiver (11) located on the trainer (12). ).