CN111330252A - Jumping type anaerobic exercise capacity tester - Google Patents

Abstract

A jumping type anaerobic exercise ability tester, comprising a steel frame, a support rod mounted on the inner side of the steel frame, and a base plate shell sleeved on the surface of the support rod; The main control CPU is embedded in the middle, and the upper surface of the substrate is located in the area around the main control CPU. There are gyroscopes, wire encoders, voltage transfer interfaces, Bluetooth and communication interfaces in sequence; the technical point is that the existing continuous jump test Compared with the system, it has high accuracy, can accurately measure the jump height, and divide the jump process into two stages of work for measurement; directly measure the height, you can measure the jump height in sections and calculate the work of the lower limbs separately, thus Resolved and reduced errors in final lower extremity anaerobic exercise assessment results (eg: average power, maximum power, minimum power, total work, maximum power per kilogram body weight, minimum power per kilogram body weight, and strength exhaustion index).

Description

A jumping type anaerobic exercise ability tester

technical field

The invention belongs to the technical field, in particular to a jumping type anaerobic exercise ability tester.

Background technique

In the previous continuous jump test system, the tester's flight time was measured, and the jump height was indirectly calculated by directly measuring the flight time according to the free fall formula h=1/2gt2. Then the tester will perform various actions in the air when the tester is in the air. The heights measured by the lower limbs are always straight or bent. The measured heights are completely different, so there will be a higher error, and the lower limb strength cannot be accurately tested. There will be a certain gap between the work and the real level of the testers.

At the same time, a power bicycle (WinGate Netherlands) is currently used in the continuous jump test of the testers. This bicycle belongs to a cycle force measuring instrument. Although it can accurately measure and evaluate the anaerobic exercise capacity of the lower limbs, it cannot directly and accurately measure the lower limb jumping. At the same time, the power bicycle (WinGate Netherlands) needs to be connected to the computer, and the acquisition of data needs to be extracted from the computer. The degree of intelligence is average, and it takes a lot of time to extract the data.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the defects of the prior art and provide a jumping type anaerobic exercise ability tester.

To achieve the above object, the present invention has adopted the following technical solutions:

A jumping type anaerobic exercise ability tester, comprising a steel frame, a support rod erected and welded on the inner side of the steel frame, and a base plate shell sleeved on the surface of the support rod;

The inside of the base plate shell is fixedly connected to the base plate by setting screws, and the main control CPU is embedded in the middle of the base plate, and the upper surface of the base plate is located in the area around the main control CPU. interface, Bluetooth and communication interface.

Preferably, the cross-section of the steel frame is in the shape of a "匚" shape, and the steel frame is welded by three hard plastic steel plates.

Preferably, a plurality of suction cups are evenly arranged on the lower surface of the steel frame, and a slot with a rectangular cross-section is opened inside the steel frame at a position close to the bottom end.

Preferably, the wire-pulling port matched with the wire-pulling encoder extends to the outside of the base plate casing, and the base plate casing and the support rod are fixedly connected by screws.

Preferably, the model used for the communication interface is RS485, and both the communication interface and the Bluetooth are connected to the external PC.

Preferably, a method for testing a tester by a jumping anaerobic exercise capacity tester comprises the following steps:

Step 1, place the entire steel frame on a flat ground, and then use a pull rope to fix the mark on the tester's waist, and the other end of the pull rope is connected to the pull wire port of the pull wire encoder;

Step 2: Set the distance between the tester's waist marking point and the ground as h, set the distance between the cable opening of the cable encoder and the tester's waist marking point as a, and set the distance between the cable and the ground. The angle is θ;

The value of a above is measured by using the rope encoder, and the value of θ is measured by using the angle measuring accelerometer;

Step 3, the user uses the trigonometric function formula h=asinθ to calculate the specific value of h;

Step 4: When testing the normal standing, use the measuring meter to measure the height of the marked point as h1; when jumping, the tester needs to bend his legs to squat, and the tester will capture the lowest position of the squat as h2;

Step 5. Now the legs start to push the ground to make the body jump up. When the pressure of the feet on the ground is zero, that is, when the feet completely leave the ground, the height of this section is h=h1-h2, because the weight from the knees is not involved. This height does work, so this part of the mass needs to be subtracted;

Step 6: Use a weight scale to measure the tester's mass as m, the weight formula for the part above the knee is m1=0.87m weight+0.3; and the height H of the foot off the ground is the highest height of the marked point, recorded as h3, H=h3－h1 ;

(m为体重，g为重力加速度)。Step 7, the position of the marking point made when standing is set to zero, W=mgh H is the height that can be measured (H is the height that the foot leaves the ground and starts to rise. That is, the height of the marking point made when standing starts to rise from the origin , h is the lowest point of squatting, taking the marked point as the standard, the height of squatting from the marked point); at this time, the tester’s power when jumping is p,

(m is the weight, g is the acceleration of gravity).

The specific formula for the power that the tester makes when jumping mentioned in the seventh step is:

The continuous jumping time is 30-60 seconds, and the number of jumping is n times, and among the n times, the minimum jumping work is performed. That is, it is set to the xth smallest px: that is, (Hx+hx) is the smallest. That is, the minimum power is,

The average power over 30 seconds is set to mp,

The maximum height of the jump within 30-60 seconds is the first maximum (Hy+hy), and the maximum power is set to pp,

The total work in 30-60 seconds is set to W,

W=2(mg×(H1+H2+..+Hn)+(0.87m+0.3)g×(h1+h2+..hn))

The weight in 30-60 seconds is divided into the maximum power pp/w,

Body weight in 30-60 seconds when the average power mp/m,

The rate of strength failure, i.e.: Fatigue Index FI

During 30-60 seconds, jump n times in total. The maximum work of five times in the period is, if p1+p2+p3+p4+p5 is the maximum of five times, and the minimum work of five times is the minimum of five times pn-4+pn-3+pn-2+pn-1+pn

FI=Strength of max 5 reps - Strength of min 5 reps/Strength of max 5 reps x 100

=[(p1+p2+p3+p4+p5)-(pn-4+pn-3+pn-2+pn-1+pn)]/(p1+p2+p3+p4+p5)x100

The above formula can be used to measure the average power, maximum power, minimum power, total power, maximum power per kilogram of body weight, minimum power per kilogram of body weight, and strength exhaustion index within 30-60 seconds during the jump.

Compared with the prior art, the present invention provides a jumping type anaerobic exercise ability tester, which has the following beneficial effects:

First, compared with the existing continuous jump test system, the present invention has high accuracy, can accurately measure the jump height, and divides the jump process into two stages of work for measurement.

Second, compared with the anaerobic power bicycle, the present invention has the advantages of small size, light weight and easy portability. It is not only suitable for measurement in the laboratory, but also can be used on flat ground (basketball court, volleyball court, badminton court, etc.) site) for testing.

Third, the present invention adopts the current advanced information engineering technology, has a high degree of intelligence, and is quick and convenient to obtain experimental test data; by directly measuring the height, the jump height can be measured in sections, and the work of the lower limbs can be calculated separately, so as to solve and reduce the problem. Errors in the final lower extremity anaerobic exercise assessment results (eg: average power, maximum power, minimum power, total work, maximum power per kilogram body weight, minimum power per kilogram body weight, and strength exhaustion index).

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic diagram of the structure of the substrate of the present invention;

Fig. 3 is the system block diagram of the present invention;

Fig. 4 is the tester's side measuring state schematic diagram of the present invention;

FIG. 5 is a schematic diagram of a programming procedure of the present invention.

Reference signs: 1. Steel frame; 2. Support rod; 3. Base plate shell; 4. Suction cup; 5. Base plate; 6. Main control CPU; 7. Gyroscope; 10. Communication interface; 11. Bluetooth.

Detailed ways

The specific embodiment of a jumping type anaerobic exercise ability tester of the present invention is further described below with reference to FIG. 1 . A jumping type anaerobic exercise ability tester of the present invention is not limited to the description of the following embodiments.

This embodiment provides a specific structure of a jumping type anaerobic exercise ability tester. As shown in Figures 1-3, a jumping type anaerobic exercise ability tester includes a steel frame 1, an erection type welded on the steel frame 1 The inner support rod 2 and the base plate shell 3 sleeved on the surface of the support rod 2;

The interior of the base plate housing 3 is fixedly connected to the base plate 5 by setting screws, and the main control CPU 6 is embedded in the middle of the base plate 5, and the upper surface of the base plate 5 is located in the area around the main control CPU 6. A gyroscope 7, a wire-pull encoder 8, Transformer interface 9, Bluetooth 11 and communication interface 10;

At the same time, the model of the main control CPU6 of the substrate 5 is STM32F103C8T6. The STM32F103C8T6 is a 32-bit microcontroller based on the ARM Cortex-M core STM32 series. The program memory capacity is 64KB, and the required voltage is 2V~3.6V. 40℃～85℃.

The whole system obtains the original pitch data through the gyroscope 7, and quickly obtains the angle information through the 3D graphics integration algorithm. The detailed algorithm of this aspect will not be elaborated here; Algorithm program programming diagram.

The signal output mode of the wire-pull encoder 8 is divided into digital signal output and analog signal output. The digital output type can choose incremental rotary encoder, absolute value encoder, etc. The output signal is square wave ABZ signal or Gray code signal, and the maximum stroke can be To achieve 15000 mm, the maximum linear accuracy is 0.01%, and the maximum resolution can reach 0.001 mm/pulse according to different configurations.

The function of the pull wire encoder 8 is to convert mechanical motion into electrical signals that can be measured, recorded or transmitted. Wire-pull encoder 8 consists of a stretchable stainless steel cord wrapped around a threaded hub which is connected to a precision rotary sensor, which can be incremental, absolute (independent), hybrid or Conductive plastic rotary potentiometers, synchronizers or resolvers.

In operation, the cable encoder 8 is installed in a fixed position, the cable is attached to the moving object, and the linear movement of the cable is aligned with the axis of movement of the moving object. When the movement occurs, the pull rope stretches and contracts, an internal spring ensures that the tension of the pull rope remains unchanged, the threaded hub drives the precision rotation sensor to rotate, and outputs an electrical signal proportional to the distance traveled by the pull rope, and the output signal is measured. The displacement, direction or velocity of a moving object can be derived.

Use the wire-pulling encoder 8 to collect the length of the human body pulled out, and obtain the jumping height of the human body through trigonometric integral operation.

As shown in FIG. 1 , the cross-section of the steel frame 1 is in the shape of a “匚” shape, and the steel frame 1 is formed by welding three hard plastic steel plates.

As shown in FIG. 1 , a plurality of suction cups 4 are evenly arranged on the lower surface of the steel frame 1 , and a slot with a rectangular cross-section is opened inside the steel frame 1 at a position close to the bottom end;

Specifically, when installing the steel frame 1 , the suction cups 4 can be used to adsorb on the smooth ground to ensure the stability of the entire steel frame 1 ; a counterweight can also be inserted into the slot to lower the center of gravity of the steel frame 1 .

As shown in FIG. 1-2 , the cable opening matched with the cable encoder 8 extends to the outside of the substrate housing 3 , and the substrate housing 3 and the support rod 2 are fixedly connected by screws.

As shown in FIGS. 2 and 3 , the model used for the communication interface 10 is RS485, and both the communication interface 10 and the Bluetooth 11 are connected to an external PC.

A method for testing a tester by a jumping anaerobic exercise ability tester, comprising the following steps:

Step 1, place the entire steel frame 1 on the flat ground, and then use a pull rope to fix the mark point on the tester's waist, and the other end of the pull rope is connected to the pull wire port of the pull wire encoder 8;

Step 2, as shown in Figure 4, set the distance from the tester's waist marking point to the ground as h, set the distance between the cable opening of the cable-pulling encoder 8 and the tester's waist marking point as a, set The angle formed by the fixed pull rope and the ground is θ;

The numerical value of the above-mentioned a is measured by using the wire-pull encoder 8, and the numerical value of θ is measured by using the angle measuring accelerometer;

Step 3, the user uses the trigonometric function formula h=asinθ to calculate the specific value of h;

Step 4: When testing the normal standing, use the measuring meter to measure the height of the marked point as h1; when jumping, the tester needs to bend his legs to squat, and the tester will capture the lowest position of the squat as h2;

Step 5. Now the legs start to push the ground to make the body jump up. When the pressure of the feet on the ground is zero, that is, when the feet completely leave the ground, the height of this section is h=h1-h2, because the weight from the knees is not involved. This height does work, so this part of the mass needs to be subtracted;

Step 6: Use a weight scale to measure the tester's mass as m, the weight formula for the part above the knee is m1=0.87m weight+0.3; and the height H of the foot off the ground is the highest height of the marked point, recorded as h3, H=h3－h1 ;

(m为体重，g为重力加速度)。Step 7, the position of the marking point made when standing is set to zero, W=mgh H is the height that can be measured (H is the height that the foot leaves the ground and starts to rise. That is, the height of the marking point made when standing starts to rise from the origin , h is the lowest point of squatting, taking the marked point as the standard, the height of squatting from the marked point); at this time, the tester’s power when jumping is p,

(m is the weight, g is the acceleration of gravity).

Specifically, the calculation formula for work is:

The continuous jumping time is 30-60 seconds, and the number of jumping is n times, and among the n times, the minimum jumping work is performed. That is, it is set to the xth smallest px: that is, (Hx+hx) is the smallest. That is, the minimum power is,

The average power over 30 seconds is set to mp,

The maximum height of the jump within 30-60 seconds is the first maximum (Hy+hy), and the maximum power is set to pp,

The total work in 30-60 seconds is set to W,

W=2(mg×(H1+H2+..+Hn)+(0.87m+0.3)g×(h1+h2+..hn))

The weight in 30-60 seconds is divided into the maximum power pp/w,

Body weight in 30-60 seconds when the average power mp/m,

The rate of strength failure, i.e.: Fatigue Index FI

During 30-60 seconds, jump n times in total. The maximum work of five times in the period is, if p1+p2+p3+p4+p5 is the maximum of five times, and the minimum work of five times is the minimum of five times pn-4+pn-3+pn-2+pn-1+pn

FI=Strength of max 5 reps - Strength of min 5 reps/Strength of max 5 reps x 100

=[(p1+p2+p3+p4+p5)-(pn-4+pn-3+pn-2+pn-1+pn)]/(p1+p2+p3+p4+p5)x100

The above formula can be used to measure the average power, maximum power, minimum power, total power, maximum power per kilogram of body weight, minimum power per kilogram of body weight, and strength exhaustion index within 30-60 seconds during the jump.

The disadvantages of the existing continuous jump test systems are as follows:

First: After directly measuring the flight time, the height of the jump is indirectly calculated. Then the tester will perform various actions in the air when the tester is in the air. The heights measured by the lower limbs are always straight or bent. The measured heights are completely different, so there will be a higher error, and the lower limb strength cannot be accurately tested. There will be a certain gap between the work and the real level of the testers.

The invention solves the problem that the measurement error is affected by the action form of the lower limbs by directly measuring the height and fixing the marking point on the waist.

Second: From a mechanical point of view, there is a gap between the work done when the foot is not off the ground and the work when the foot is off the ground. The resistance is the mass of the part above the knee that the foot does not leave the ground, i.e. m1=0.87 mentioned above m weight + 0.3, when the highest point in the air falls, the resistance to the foot touching the ground is the entire body mass m. However, the existing instruments cannot achieve such accurate measurement.

By directly measuring the height, the present invention can measure the jump height in sections and calculate the lower limb work separately, thereby solving and reducing the final lower limb anaerobic exercise evaluation result (average power, maximum power, minimum power, total work, per kilogram of body weight) maximum power, minimum power per kilogram of body weight, and power exhaustion index).

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (7)

1. a jumping type anaerobic exercise ability tester, it is characterized in that: comprise steel frame (1), erection type welding on the inner side of steel frame (1) support rod (2) and sleeve on support rod (2) surface substrate housing (3); The inside of the base plate housing (3) is fixedly connected to the base plate (5) by means of screws, and a main control CPU (6) is embedded in the middle of the base plate (5), and the upper surface of the base plate (5) is located on the main control CPU (5). 6) A gyroscope (7), a pull-wire encoder (8), a voltage transfer interface (9), a Bluetooth (11) and a communication interface (10) are arranged in sequence in the surrounding area. 2. a kind of jumping type anaerobic exercise ability tester as claimed in claim 1, is characterized in that: the cross section of described steel frame (1) is " 匚 " shape, and steel frame (1) adopts three hard plastics Welded steel plate. 3. A kind of jumping type anaerobic exercise ability tester as claimed in claim 1, it is characterized in that: the lower surface of described steel frame (1) is evenly provided with several suction cups (4), and inside the steel frame (1) A slot with a rectangular cross-section is opened at a position close to the bottom end. 4. A kind of jumping type anaerobic exercise ability tester as claimed in claim 1, it is characterized in that: the wire-pulling port matched with the wire-pulling encoder (8) extends to the outside of the substrate housing (3), and the substrate housing ( 3) It is fixedly connected with the support rod (2) by setting screws. 5. a kind of jumping type anaerobic exercise ability tester as claimed in claim 1, is characterized in that: the model that described communication interface (10) adopts is RS485, and communication interface (10) and bluetooth (11) are both with External PC connection. 6. a kind of jumping type anaerobic exercise ability tester as claimed in claim 1 tests the method for tester, is characterized in that, comprises the steps: Step 1, place the entire steel frame (1) on a flat ground, and then use a pull rope to fix the tester's waist to mark the point, and the other end of the pull rope is connected to the pull wire port of the pull wire encoder (8). ; Step 2: Set the distance between the tester's waist marking point and the ground as h, set the distance between the cable opening of the cable encoder (8) and the tester's waist marking point as a, and set the distance between the cable and the tester's waist. The angle formed by the ground is θ; The numerical value of the above-mentioned a is measured by using the rope encoder (8), and the numerical value of θ is measured by using the angle measurement accelerometer; Step 3, the user uses the trigonometric function formula h=asinθ to calculate the specific value of h; Step 4. When testing the normal standing, use the measuring meter to measure the height of the marked point as h1; when jumping, the tester needs to bend his legs to squat, and the tester will capture the lowest position of the squat as h2; Step 5. Now the legs start to push the ground to make the body jump up. When the pressure of the feet on the ground is zero, that is, when the feet completely leave the ground, the height of this section is h=h1-h2, because the weight from the knees is not involved. This height does work, so this part of the mass needs to be subtracted; Step 6: Use a weight scale to measure the tester's mass as m, the weight formula for the part above the knee is m1=0.87m weight+0.3; and the height H of the foot off the ground is the highest height of the marked point, recorded as h3, H=h3－h1 ; Step 7, the position of the marking point made when standing is set to zero, W=mgh H is the height that can be measured (H is the height that the foot leaves the ground and starts to rise. That is, the height of the marking point made when standing starts to rise from the origin , h is the lowest point of squatting, taking the marked point as the standard, the height of squatting from the marked point); at this time, the tester’s power when jumping is p,

(m is the weight, g is the acceleration of gravity). 7. a kind of jumping type anaerobic exercise ability tester as claimed in claim 6 tests the method for tester, it is characterized in that, the concrete formula of power done when referring to tester jumping in described step 7 is: : The continuous jumping time is 30-60 seconds, and the number of jumping is n times, and among the n times, the minimum jumping work is performed. That is, it is set to the xth smallest px: that is, (Hx+hx) is the smallest. That is, the minimum power is,

The average power over 30 seconds is set to mp,

The maximum height of the jump within 30-60 seconds is the first maximum (Hy+hy), and the maximum power is set to pp,

The total work in 30-60 seconds is set to W, W=2(mg×(H1+H2+..+Hn)+(0.87m+0.3)g×(h1+h2+..hn)) The weight in 30-60 seconds is divided into the maximum power pp/w,

Body weight in 30-60 seconds when the average power mp/m,

The rate of strength failure, i.e.: Fatigue Index FI During 30-60 seconds, jump n times in total. The maximum work of five times in the period is, if p1+p2+p3+p4+p5 is the maximum of five times, and the minimum work of five times is the minimum of five times pn-4+pn-3+pn-2+pn-1+pn FI=Strength of max 5 reps - Strength of min 5 reps/Strength of max 5 reps x 100 =[(p1+p2+p3+p4+p5)-(pn-4+pn-3+pn-2+pn-1+pn)]/(p1+p2+p3+p4+p5)x100 The above formula can be used to measure the average power, maximum power, minimum power, total power, maximum power per kilogram of body weight, minimum power per kilogram of body weight, and strength exhaustion index within 30-60 seconds during the jump.

Images