SU1725929A1 - Device for monitoring the training of pole vaulter - Google Patents

Abstract

The invention relates to sport and can be used to control the technique of performing a pole vault by an athlete. The aim of the invention is to expand the functionality by analyzing the duration of the phases of the jump. The device contains a load cell unit 1, an amplifier 2, a weight compensation unit 3, a pulse shaper 4, a jump time measurement unit 5, a maximum determination unit 6, a jump phase extraction unit 8, a jump phase setting unit 14, jump phase reference durations 15, a relative calculation unit 16 durations of the phases of the jump, block 22 comparison, indicator 28 time parameters of the jump. The device selects, for example, five phases of the jump on the four peaks of the pole force, compares with the reference values and allows the coach to promptly provide information about the athlete's pole vault technique in the form of the total jump duration, deviations in relative units of the jump parameters of the athlete reference jump, such as a top-class athlete. 3 hp f-ly, 4 ill. (Ls

Description

The invention relates to sport and can be used to control the technique of performing a pole vault by an athlete.

It is known a device for training taty-athletics, which includes a strain gauge with strain gauges, the output of which is connected through an amplifier through a series-connected amplifier, an athlete's weight compensation unit, to a zero indicator, to a comparison unit, and to a power pulse measuring unit, the output of which is connected and the third inputs, respectively, with the output of the start-up unit and with the input of the start indicator and with the output of the comparison unit, the second input of which is connected to the output of the rod weight sensor.

A disadvantage of the known device is the low efficiency in using it to control the training process of pole jumpers, due to the specifics of this sports sport, as well as the narrow scope of its application.

The aim of the invention is to expand the functionality of the device by analyzing the duration of the phases of the jump.

Figure 1 shows the functional diagram of the device for monitoring the training process of pole-vaulters; Fig. 2 is a functional diagram of the implementation of a jump time measurement unit; FIG. 3 is a functional block diagram of the phase allocation of the jump; Fig. 4 is a time chart of the change in the force of the pressure of the pole on the strainer during the jump of the athlete from the pole with the reflection of the phases of the jump.

The device contains a strain gauge with a strain gauge unit 1 installed in a pole stand holder connected by an electrical output through an amplifier 2 to the input of a weight compensation unit 3, the output of which is connected to the trigger input of the jump time measuring unit 5 via the pulse shaper 4 and directly to the input of the unit 6 determine the maximum jump. The block b is connected by an output to the counting input of the phase allocation unit 7 of the jump connected by the bit outputs (n) with the corresponding n-inputs of the time counting resolution of the phase measurement unit 8 of the jump phases, for example, consisting of counters-timers 9-13. The counting input of block 8 is connected to the output of the sync pulses of block 5, the device also contains a block for setting reference relative durations of the jump phases — setpoint 14 (for example, in relative units, in percent), a fault indicator 15, block 16 for calculating the relative durations of the jump phases, for example, from standard division blocks (ADC) 17-21. The outputs of block 8 are connected to the inputs of the divisible computing block 16, the outputs of which

connected to the first inputs of the comparator unit 22, consisting of comparing elements 23-27, the second inputs of which are connected to the corresponding outputs of the setter 14. The outputs of the comparator unit 22 and

0 of the jump time measurement unit 5 are connected by the corresponding inputs of the indicator 28 pole vault parameters.

The jump time measurement unit 5 (figure 2) contains, for example, a generator 29

5 clock pulses, the output connected to the counting input of the counter 30 and the output of the clock pulses of the block.

The jump extract phase unit 7 (FIG. 3) contains a shift register 31, a one-shot

0 32, triggered on the leading edge of the pulse, and the element OR 33, the output of which is connected to the counting input of the register 31. Figure 1 also shows the pole 34, which creates a force on the strain gauge 1.

5 The device operates as follows.

The athlete runs, sets the pole 34 to the box for the pole in which the work platform with a block of 1 ten0 zodiacchikov is installed, and takes the jump. At the moment of the start of the jump, as a result of the interaction of the pole with the block 1 of the strain gauges, its signal is proportional to the vertical component of the sixth pressure force, i.e. the lifting force is fed to the input of the amplifier 2, from the output of which goes to the input of the block 3, where subtraction of the total force of the pressure on the strain pad of the weight occurs. From the output of block 3, the signal is applied to

0 pulse generator 4 (for example, made in the form of a threshold element or Schmitt trigger), the output of which produces a single signal indicating that the jump process has begun,

5 This signal triggers blocks 5 and 7, in block 7 with single vibrator 32, a start pulse is generated, which, passing through the OR element 33 to the counting input of shift register 31, generates at the output of the first bit its counting resolution count counter 9. From the sync pulse output of block 5 the clock pulses arrive at the counting inputs of counters 9-13 of block 8. Counter 9 begins to count pulses and form at its output,

5 i.e. on the first output of block 8, the signal duration of the first phase of the jump. When the signal from the output of block 3 reaches the first maximum measured by block 6, which indicates the end of the first and the beginning of the second phases, the counting of counter 9 stops at

since the first pulse maximum shift register 31 transfers the unit from the first output to the second one, it starts counting the counter 10 according to the counting resolution signal from the output of block 7. The durations of the third, fourth and fifth phases of the jump are calculated in the same way.

A pulse from the fifth output (nth output in the general case) of block 7, indicating the fourth maximum of the pressure signal of the pole, is fed to the input of the calculation resolution of block 16, which calculates the relative durations

Ti T2 Tz T4 T5 jump phases:, -

T

T

These data are compared in block 22 with reference values, for example, given on the basis of the high-jump performance of the athlete.

The process of measuring the duration of the jump and its phases is stopped after the athlete is repulsed from the pole, after which a zero signal is generated at the output of blocks 3 and 4, according to which block 5 stops counting.

The obtained assessments of the results of the jump are recorded and displayed in block 28. According to the obtained data, the trainer evaluates the technique of the jump and introduces the appropriate adjustments to the process of training the athlete.

If the athlete’s jump was not performed technically, for example, at the end of the phase the push-up jumper again acts on the pole, then at the output of block 6 there is a fifth signal of the maximum force of the pole to the strain gauge 1, which will shift the logical unit from the fifth exit block 7 to the sixth exit (to n + 1 output). From this output, the signal will go to block 15, which will record the failure of the jump process.

The connection of the fifth (nth) output of block 7 is not necessary, since the jumping process can be indicated and recorded continuously, which is determined by technical means for this purpose.

The device also allows you to control the process of training in other sports, for example, in the triple jump, where the process of training contains several

phases that reflect the athlete's technique.

Claims (4)

1. Process control device training of the pole jumper, which contains a strain gauge unit connected in series, an amplifier and a weight compensation unit, an exciter sensor, an output connected to the first inputs of the comparator unit, an indicator characterized in that, in order to extend the functionality by analyzing the duration of the jump phases, into the device entered shaper, jump time measurement block, block determining jump maxima, jump phase extraction block, jump phase duration measuring block, calculating the relative jump jump phase durations, the output of the weight compensation block plug to the driver and the jump maximum definition block, output connected to the first input of the jump phase extractor block, the second input of which is connected with the output of the imager and the input of the jump time measurement unit, and the outputs are connected to the resolution inputs of the jump duration measurement unit, the counting inputs of which are connected to the output synchronization of the jump time measurement unit, and the outputs, respectively, with the inputs of the divisible computing unit, the relative durations of the jump phases, the divider inputs of which are connected to the jump time measurement output outputs, and the outputs with the second inputs of the comparison unit, whose outputs are connected to the indicator, the synchronizing input connected to the output of the jump time measurement unit. 2. A device according to claim 1, in accordance with the fact that the (n + 1) -th output of the jump phase extraction unit is connected to a fault indicator. 3. The device according to paragraphs. 1.2, characterized by the fact that the output of the measuring unit jump time is connected to the indicator input. 4. Device on PP. 1-3, characterized in that the n-th output of the phase extraction block of the jump is connected to the resolution input calculating the block calculating the relative durations of the phases of the jump and to the input of the resolution of the indicator. CSppb} / Fig.Z FI.2