CN111330252A - Jumping type anaerobic exercise capacity tester - Google Patents
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- CN111330252A CN111330252A CN202010293778.1A CN202010293778A CN111330252A CN 111330252 A CN111330252 A CN 111330252A CN 202010293778 A CN202010293778 A CN 202010293778A CN 111330252 A CN111330252 A CN 111330252A
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Abstract
A jump type anaerobic exercise capacity tester comprises a steel frame, a support rod which is welded at the inner side of the steel frame in an erecting mode and a substrate shell which is sleeved on the surface of the support rod; the inside of the substrate shell is fixedly connected with a substrate through a set screw, a main control CPU is embedded in the middle of the substrate, and a gyroscope, a stay wire encoder, a voltage conversion interface, Bluetooth and a communication interface are sequentially arranged in an area, located on the periphery of the main control CPU, of the upper surface of the substrate; the technical key points are that compared with the existing continuous jump testing system, the accuracy is high, the jump height can be accurately measured, and the jump process is divided into two stages of doing work for measurement; the height is directly measured, the jump height can be measured in a segmented mode, the lower limb acting can be calculated separately, and therefore the error problem of the final lower limb anaerobic movement evaluation result (such as average power, maximum power, minimum power, total work, maximum power per kilogram of body weight, minimum power per kilogram of body weight and force failure index) is solved and reduced.
Description
Technical Field
The invention belongs to the technical field, and particularly relates to a jump type anaerobic exercise capacity tester.
Background
The conventional continuous jump test system measures the flight time of a tester, and indirectly calculates the height of a jump by directly measuring the flight time according to a free fall formula h of 1/2gt 2. Therefore, the height measured by the tester in various movements in the air when the tester is vacated is completely different when the lower limbs are kept in the straight state or the bent state all the time, so that higher errors can occur, further the lower limb strength which can not be accurately tested does work, and a certain difference exists between the lower limb strength and the true level of the tester.
Meanwhile, a power bicycle (WinGate Netherlands) is used for carrying out continuous jumping test on a tester at present, belongs to a circulating dynamometer, and can accurately measure and evaluate the anaerobic exercise capacity of the lower limbs, but cannot directly and accurately measure the jumping force of the lower limbs; meanwhile, a power bicycle (WinGate Netherlands) needs to be connected with a computer, the intelligence degree of the acquired data needs to be extracted from the computer, and a large amount of time is consumed for extracting the data.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a jump type anaerobic exercise power tester.
In order to achieve the purpose, the invention adopts the following technical scheme:
a jump type anaerobic exercise capacity tester comprises a steel frame, a support rod which is welded at the inner side of the steel frame in an erecting mode and a substrate shell which is sleeved on the surface of the support rod;
the inside of base plate shell is through setting up screw fixedly connected with base plate, and the middle part of base plate inlays and is equipped with main control CPU, base plate upper surface is arranged in the peripheral region of main control CPU and has set gradually gyroscope, encoder, commentaries on classics pressure interface, bluetooth and communication interface of acting as go-between.
Preferably, the cross-section of steelframe is "Contraband" font, and the steelframe adopts three hard plastic steel plates welding to form.
Preferably, the lower surface of the steel frame is uniformly provided with a plurality of suckers, and a notch with a rectangular cross section is formed in the position, close to the bottom end, inside the steel frame.
Preferably, the bracing wire port matched with the bracing wire encoder extends to the outside of the substrate shell, and the substrate shell is fixedly connected with the supporting rod through a screw.
Preferably, the type that communication interface adopted is RS485, and communication interface and bluetooth all are connected with external PC end.
Preferably, the method for testing the tester by the jumping type anaerobic exercise capacity tester comprises the following steps:
the method comprises the following steps that firstly, the whole steel frame is placed on a flat ground, then a pull rope is fixed at a mark point between waists of a tester, and the other end of the pull rope is connected with a pull rope opening of a pull rope encoder;
setting the distance between the waist mark point of the tester and the ground as h, setting the distance between a stay wire opening of the stay wire encoder and the waist mark point of the tester as a, and setting the angle formed by the stay wire and the ground as theta;
the value of a is measured by a pull rope encoder, and the value of theta is measured by an angle measurement accelerator;
step three, the user calculates a specific numerical value of h by using a trigonometric function formula h as asin theta;
step four, when the normal standing is tested, the height of the mark point is measured by using a measuring meter to be h 1; during jumping, a tester needs to bend legs and squat, and the tester can capture the lowest position of squat and count the position as h 2;
step five, the leg begins to exert force to kick the ground to jump the body, when the pressure of the foot on the ground is zero, namely the foot is completely away from the ground, the height is counted as h 1-h 2, and the weight below the knee does not participate in the work of the height, so that the mass needs to be reduced;
step six, measuring the mass of the testee as m by using a weighing machine, wherein the mass formula m1 of the part above the knee is 0.87m of body weight + 0.3; the height H of the foot from the ground is the highest height of the marking point and is marked as H3, and H is H3-H1;
step seven, setting the position of the mark point when standing as zero, and measuring the height when W ═ mgh H is height (H is height that the foot leaves the ground and begins to rise, namely the height that the mark point made when standing begins to rise from the origin, H is the lowest point of squatting, and taking the mark point as the standard, the height that the mark point begins to squat from the mark point); the power at which the tester jumps is p,
(m is body weight, g is acceleration of gravity).
In the seventh step, the specific formula of the power made when the tester jumps is mentioned as follows:
the continuous jumping time is 30-60 seconds, the number of jumping is n times, and the jumping is the one with the minimum work in the n times. I.e. set to the xth minimum px: i.e., (Hx + Hx) is minimal. I.e. the minimum power is,
the average power over 30 seconds is set as mp,
the maximum height of jump within 30-60 seconds is the first maximum (Hy + Hy) and the maximum power is 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 of the body within 30-60 seconds is divided into the maximum power pp/w,
the body weight is divided into average power mp/m within 30-60 seconds,
the rate of strength failure, namely: fatigue index FI
The jump is performed n times in total during 30-60 seconds. The five maximum work in the period is that if the p1+ p2+ p3+ p4+ p5 is five maximum work, the minimum five work is five minimum pn-4 + pn-3 + pn-2 + pn-1 + pn
FI maximum five forces-minimum five forces/maximum five forces x100
＝[(p1+p2+p3+p4+p5)－(pn－4+pn－3+pn－2+pn－1+pn)]/(p1+p2+p3+p4+p5)x100
The average power, maximum power, minimum power, total work, maximum power per kilogram of body weight, minimum power per kilogram of body weight, and force exhaustion index during 30-60 seconds of the jump period can be measured by the above formula.
Compared with the prior art, the invention provides a jump type anaerobic exercise capacity tester, which has the following beneficial effects:
compared with the existing continuous jump testing system, the jump height measuring system has high accuracy, can accurately measure the jump height, and divides the jump process into two stages of doing work for measurement.
And secondly, compared with the oxygen-free power bicycle, the portable bicycle has the advantages of small volume, portability and portability, is suitable for measurement in a laboratory, and can be used for testing on flat grounds (such as basketball courts, volleyball courts, badminton courts and the like) except the laboratory.
Thirdly, the invention adopts the prior advanced information engineering technology, has high intelligent degree and can quickly and conveniently acquire experimental test data; by directly measuring the height, the jump height can be measured in a segmented manner and the lower limb acting can be calculated separately, so that the error problem of the final lower limb anaerobic movement evaluation result (such as average power, maximum power, minimum power, total work, maximum power per kilogram of body weight, minimum power per kilogram of body weight and force failure index) is solved and reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a substrate structure according to the present invention;
FIG. 3 is a system block diagram of the present invention;
FIG. 4 is a schematic diagram of a tester side measurement state of the present invention;
FIG. 5 is a schematic diagram of a programming procedure of the present invention.
Reference numerals: 1. a steel frame; 2. a strut; 3. a substrate housing; 4. a suction cup; 5. a substrate; 6. a main control CPU; 7. a gyroscope; 8. a stay wire encoder; 9. a pressure conversion interface; 10. a communication interface; 11. bluetooth.
Detailed Description
The following further describes a specific embodiment of the jumping type anaerobic exercise capacity tester in combination with fig. 1. The jumping type anaerobic exercise power tester of the present invention is not limited to the description of the following embodiments.
The embodiment provides a concrete structure of a jump type anaerobic exercise power tester, and as shown in fig. 1-3, the jump type anaerobic exercise power tester comprises a steel frame 1, a support rod 2 welded on the inner side of the steel frame 1 in an erecting mode, and a substrate shell 3 sleeved on the surface of the support rod 2;
the inside of the substrate shell 3 is fixedly connected with a substrate 5 through a set screw, a main control CPU6 is embedded in the middle of the substrate 5, and a gyroscope 7, a stay wire encoder 8, a pressure conversion interface 9, a Bluetooth 11 and a communication interface 10 are sequentially arranged in the area of the upper surface of the substrate 5, which is located on the periphery of the main control CPU 6;
meanwhile, the model of the main control CPU6 matched with the substrate 5 is STM32F103C8T6, the STM32F103C8T6 is a 32-bit microcontroller based on ARM Cortex-M kernel STM32 series, the capacity of a program memory is 64KB, the required voltage is 2V-3.6V, and the working temperature is-40 ℃ to 85 ℃.
The whole system acquires original pitching data through a gyroscope 7, and rapidly acquires angle information through a 3D (three-dimensional) graphical integration algorithm, wherein detailed algorithms in the aspect are not specifically explained; as shown in fig. 5, a programmed graph of the algorithm associated with the gyroscope 7 is provided.
The signal output mode of the stay wire encoder 8 is divided into digital signal output and analog signal output, the digital output type can select an incremental rotary encoder, an absolute value encoder and the like, the output signal is a square wave ABZ signal or a Gray code signal, the maximum stroke can be 15000 mm, the maximum linear precision is 0.01%, and the maximum resolution can reach 0.001 mm/pulse according to different configurations.
The function of the pull encoder 8 is to convert mechanical movements into electrical signals that can be metered, recorded or transmitted. The pull-wire encoder 8 is formed by a stretchable stainless steel cable wound around a threaded hub which is coupled to a precision rotary sensor which may be an incremental encoder, an absolute (independent) encoder, a hybrid or conductive plastic rotary potentiometer, a synchronizer or resolver.
In operation, the stay wire encoder 8 is installed at a fixed position, the stay wire is tied to the moving object, and the linear motion of the stay wire is aligned with the motion axis of the moving object. When the movement occurs, the stay cord is extended and contracted, the tension degree of the stay cord is ensured to be unchanged by an internal spring, the hub with the threads drives the precise rotary inductor to rotate, an electric signal proportional to the moving distance of the stay cord is output, and the displacement, the direction or the speed of the moving object can be obtained by measuring the output signal.
The length of the human body pulled out is collected by using the pull encoder 8, and the human jumping height is obtained through trigonometric integral operation.
As shown in fig. 1, the cross section of the steel frame 1 is shaped like Contraband, and the steel frame 1 is formed by welding three hard plastic steel plates.
As shown in fig. 1, a plurality of suckers 4 are uniformly arranged on the lower surface of a steel frame 1, and a notch with a rectangular cross section is formed in the steel frame 1 at a position close to the bottom end;
specifically, when the steel frame 1 is installed, the sucker 4 can be used for being adsorbed on a smooth ground to ensure the stability of the whole steel frame 1; and a balancing weight can be inserted into the notch to lower the gravity center of the steel frame 1.
As shown in fig. 1-2, the wire opening of the wire encoder 8 extends to the outside of the substrate housing 3, and the substrate housing 3 is fixedly connected with the support rod 2 by screws.
As shown in fig. 2 and 3, the communication interface 10 is RS485 in model, and both the communication interface 10 and the bluetooth 11 are connected to an external PC.
A method for testing a tester by a jump type anaerobic exercise capacity tester comprises the following steps:
step one, the whole steel frame 1 is placed on a flat ground, and then a pull rope is fixed at a mark point between the waists of a tester, and the other end of the pull rope is connected with a pull rope port of a pull rope encoder 8;
step two, as shown in fig. 4, setting the distance from the waist mark point of the tester to the ground as h, setting the distance from the stay wire port of the stay wire encoder 8 to the waist mark point of the tester as a, and setting the angle formed by the stay wire and the ground as theta;
the value of a is measured by a stay wire encoder 8, and the value of theta is measured by an angle measurement accelerator;
step three, the user calculates a specific numerical value of h by using a trigonometric function formula h as asin theta;
step four, when the normal standing is tested, the height of the mark point is measured by using a measuring meter to be h 1; during jumping, a tester needs to bend legs and squat, and the tester can capture the lowest position of squat and count the position as h 2;
step five, the leg begins to exert force to kick the ground to jump the body, when the pressure of the foot on the ground is zero, namely the foot is completely away from the ground, the height is counted as h 1-h 2, and the weight below the knee does not participate in the work of the height, so that the mass needs to be reduced;
step six, measuring the mass of the testee as m by using a weighing machine, wherein the mass formula m1 of the part above the knee is 0.87m of body weight + 0.3; the height H of the foot from the ground is the highest height of the marking point and is marked as H3, and H is H3-H1;
step seven, setting the position of the mark point when standing as zero, and W mgh H as height (H is height that the foot starts to rise away from the ground, namely what is done when standing) to be measuredThe height of the mark point from the origin to rise, h is the lowest point of squatting, and the height of squatting from the mark point is based on the mark point); the power at which the tester jumps is p,
(m is body weight, g is acceleration of gravity).
Specifically, the calculation formula of the work is as follows:
the continuous jumping time is 30-60 seconds, the number of jumping is n times, and the jumping is the one with the minimum work in the n times. I.e. set to the xth minimum px: i.e., (Hx + Hx) is minimal. I.e. the minimum power is,
the average power over 30 seconds is set as mp,
the maximum height of jump within 30-60 seconds is the first maximum (Hy + Hy) and the maximum power is 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 of the body within 30-60 seconds is divided into the maximum power pp/w,
the body weight is divided into average power mp/m within 30-60 seconds,
the rate of strength failure, namely: fatigue index FI
The jump is performed n times in total during 30-60 seconds. The five maximum work in the period is that if the p1+ p2+ p3+ p4+ p5 is five maximum work, the minimum five work is five minimum pn-4 + pn-3 + pn-2 + pn-1 + pn
FI maximum five forces-minimum five forces/maximum five forces x100
＝[(p1+p2+p3+p4+p5)－(pn－4+pn－3+pn－2+pn－1+pn)]/(p1+p2+p3+p4+p5)x100
The average power, maximum power, minimum power, total work, maximum power per kilogram of body weight, minimum power per kilogram of body weight, and force exhaustion index during 30-60 seconds of the jump period can be measured by the above formula.
The disadvantages of the existing continuous jump test system are as follows:
firstly, the method comprises the following steps: the height of the jump is calculated indirectly by directly measuring the flight time. Therefore, the height measured by the tester in various movements in the air when the tester is vacated is completely different when the lower limbs are kept in the straight state or the bent state all the time, so that higher errors can occur, further the lower limb strength which can not be accurately tested does work, and a certain difference exists between the lower limb strength and the true level of the tester.
The invention solves the problem that the measuring error is influenced by the action form of the lower limbs by directly measuring the height and fixing the mark points on the waist.
Secondly, the method comprises the following steps: in terms of mechanics, there is a difference between the work done when the foot is away from the ground and the work done when the foot is away from the ground, the foot is not away from the ground and the resistance is the mass of the part above the knee, i.e. m1 is 0.87m body weight +0.3, and the resistance to the ground when the foot contacts the ground when the highest point of the flight falls back is the whole body mass m.
According to the invention, by directly measuring the height, the jump height can be measured in a segmented manner and the lower limb acting can be calculated separately, so that the error problem of the final lower limb anaerobic motion evaluation result (average power, maximum power, minimum power, total work, maximum power per kilogram of body weight, minimum power per kilogram of body weight and force failure index) is solved and reduced.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. The utility model provides a jump type anaerobic exercise ability tester which characterized in that: comprises a steel frame (1), a support rod (2) welded on the inner side of the steel frame (1) in an erecting way and a substrate shell (3) sleeved on the surface of the support rod (2);
the inside of base plate shell (3) is through setting up screw fixedly connected with base plate (5), and the middle part of base plate (5) inlays and is equipped with main control CPU (6), base plate (5) upper surface is located and has set gradually gyroscope (7), encoder (8), commentaries on classics pressure interface (9), bluetooth (11) and communication interface (10) of acting as go-between in the peripheral region of main control CPU (6).
2. The jumping type anaerobic exercise capacity tester as claimed in claim 1, wherein: the cross-section of steelframe (1) is "Contraband" font, and steelframe (1) adopts three hard plastic steel plate welding to form.
3. The jumping type anaerobic exercise capacity tester as claimed in claim 1, wherein: the lower surface of the steel frame (1) is evenly provided with a plurality of suckers (4), and the position, close to the bottom end, inside the steel frame (1) is provided with a notch with a rectangular cross section.
4. The jumping type anaerobic exercise capacity tester as claimed in claim 1, wherein: the stay wire port matched with the stay wire encoder (8) extends to the outside of the substrate shell (3), and the substrate shell (3) is fixedly connected with the support rod (2) through a screw.
5. The jumping type anaerobic exercise capacity tester as claimed in claim 1, wherein: the model that communication interface (10) adopted is RS485, and communication interface (10) and bluetooth (11) all are connected with external PC end.
6. The method for testing a tester by using a jump type anaerobic exercise capability tester as claimed in claim 1, comprising the steps of:
the method comprises the following steps that firstly, the whole steel frame (1) is placed on a flat ground, then a pull rope is fixed at a mark point between waists of a tester, and the other end of the pull rope is connected with a pull rope opening of a pull rope encoder (8);
setting the distance between the waist mark point of the tester and the ground as h, setting the distance between a stay wire opening of the stay wire encoder (8) and the waist mark point of the tester as a, and setting the angle formed by the stay wire and the ground as theta;
the value of a is measured by a pull rope encoder (8), and the value of theta is measured by an angle measurement accelerator;
step three, the user calculates a specific numerical value of h by using a trigonometric function formula h as asin theta;
step four, when the normal standing is tested, the height of the mark point is measured by using a measuring meter to be h 1; during jumping, a tester needs to bend legs and squat, and the tester can capture the lowest position of squat and count the position as h 2;
step five, the leg begins to exert force to kick the ground to jump the body, when the pressure of the foot on the ground is zero, namely the foot is completely away from the ground, the height is counted as h 1-h 2, and the weight below the knee does not participate in the work of the height, so that the mass needs to be reduced;
step six, measuring the mass of the testee as m by using a weighing machine, wherein the mass formula m1 of the part above the knee is 0.87m of body weight + 0.3; the height H of the foot from the ground is the highest height of the marking point and is marked as H3, and H is H3-H1;
step seven, setting the position of the mark point when standing as zero, and setting W mgh as height (H is the height that the foot leaves the ground and begins to rise, namely, the mark point when standing is from the originThe height of the squatting starting from the mark point by taking the mark point as a standard, wherein h is the lowest point of the squatting; the power at which the tester jumps is p,
(m is body weight, g is acceleration of gravity).
7. The method for testing the tester by using the jumping type anaerobic exercise capability tester as claimed in claim 6, wherein the specific formula of the power used when the tester jumps in the seventh step is as follows:
the continuous jumping time is 30-60 seconds, the number of jumping is n times, and the jumping is the one with the minimum work in the n times. I.e. set to the xth minimum px: i.e., (Hx + Hx) is minimal. I.e. the minimum power is,
the average power over 30 seconds is set as mp,
the maximum height of jump within 30-60 seconds is the first maximum (Hy + Hy) and the maximum power is 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 of the body within 30-60 seconds is divided into the maximum power pp/w,
the body weight is divided into average power mp/m within 30-60 seconds,
the rate of strength failure, namely: fatigue index FI
The jump is performed n times in total during 30-60 seconds. The five maximum work in the period is that if the p1+ p2+ p3+ p4+ p5 is five maximum work, the minimum five work is five minimum pn-4 + pn-3 + pn-2 + pn-1 + pn
FI maximum five forces-minimum five forces/maximum five forces x100
＝[(p1+p2+p3+p4+p5)－(pn－4+pn－3+pn－2+pn－1+pn)]/(p1+p2+p3+p4+p5)x100
The average power, maximum power, minimum power, total work, maximum power per kilogram of body weight, minimum power per kilogram of body weight, and force exhaustion index during 30-60 seconds of the jump period can be measured by the above formula.
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| CN202010293778.1A CN111330252A (en) | 2020-04-15 | 2020-04-15 | Jumping type anaerobic exercise capacity tester |
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| US6155957A (en) * | 1999-11-05 | 2000-12-05 | Worley; Michael L. | Athletic ability measuring device |
| CN104412201A (en) * | 2012-05-09 | 2015-03-11 | 苹果公司 | Varying output for a computing device based on tracking windows |
| CN203619680U (en) * | 2013-10-24 | 2014-06-04 | 杨振海 | Positioning direction finder |
| CN205379595U (en) * | 2016-01-22 | 2016-07-13 | 黎涌明 | Stay -supported fitness equipment |
| CN209405569U (en) * | 2018-12-10 | 2019-09-20 | 曲靖师范学院 | A kind of infrared ray trigger-type altitude touch training device |
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| Title |
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