CN103657036B - The training of laser type hammer force at the core and information feedback device - Google Patents

Abstract

Laser hammer core strength training and information feedback device. The invention relates to a laser hammer strength training device. The present invention solves the problem that there is no device in the prior art that combines hammer final force core stability training and information feedback, and hammer training The problem of not being able to measure the final training speed of ball training, the device includes a training hand-held weight assembly, a shaking bracket, a motor assembly, fittings, a fixing plate, a laser speed sensor and a balance training mechanism with an information feedback function, and the shaking bracket It includes an annular plate, outriggers and springs, and the motor assembly includes a motor and a cam. The balance training mechanism with information feedback function includes a pedal, a balance base, three distance measuring sensors and a control circuit. The pedal is flat, and the balance base is The hemispherical base, the plane of the hemispherical base is fixedly connected with the bottom surface of the pedal, and three distance measuring sensors are fixed on the bottom surface of the pedal. The invention is used in the laser hammer core strength training.

Description

Laser hammer core strength training and information feedback device

technical field

The invention relates to a laser type hammer strength training device, in particular to a laser type hammer core strength training and information feedback device.

Background technique

The core part of the human body is a whole formed by the waist, pelvis, and hip joints. It is the middle link of the human body. The core stability is the stability of the core part of the human body during exercise, which establishes the fulcrum for the force of the limb muscles and provides the support for the strength of the upper and lower limbs. The body posture that creates conditions and provides strength for the stability and movement of the center of gravity. The strength that constitutes or improves core stability is core strength. The biggest difference between core strength training and traditional waist and abdomen strength training is that core strength training is in many cases. Under unstable conditions, more small muscle groups, especially auxiliary muscles around the joints, can be involved in activities, and athletes can stabilize joints and control the center of gravity during exercise. The posture of core muscle training is determined by the action of the official game. Modern high-level special strength training is to use strength training methods close to special movements, and use athlete movement information to provide information feedback to the athlete's movement technical process. However, the prior art has not yet combined hammer throw final force core stability strength training and information feedback into one The device, and can not measure the speed of training hard at the end of practice.

Contents of the invention

In order to solve the problem that there is no device in the prior art that combines the hammer final hard core stable strength training and information feedback, and the final hard training speed cannot be measured during hammer training, the present invention further provides laser hammer hammer core strength training and information feedback device.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the device includes a training hand-held weight assembly, a shaking bracket, a motor assembly, fittings, a fixing plate, a laser speed sensor, and a balance training mechanism with an information feedback function. The bracket includes an annular plate, multiple legs of different lengths and multiple springs, the motor assembly includes a motor and a cam, and the training handheld weight assembly includes a connecting rod, a handle, a fixed block and multiple weights, and the handle is wound with a display The pressure sensor, the connecting rod is an 'L' shaped rod body, one end of the connecting rod is fixed with multiple weights through a fixed block, the handle is fixedly installed on the other end of the connecting rod, and a spring is fixedly installed at the bottom of each leg. A plurality of outriggers with different lengths are uniformly arranged on the bottom of the annular plate, and the top of each outrigger is fixedly installed on the lower end surface of the annular plate. R is an acute angle, looking down at the annular plate, and looking counterclockwise from the lowest end to the highest end of the annular plate, there is a laser speed sensor between the two, and the terminal emitter of the laser speed sensor is located at the inclination direction of the annular plate On the vertical central axis, the starting end emitting device of the laser speed sensor is arranged between the lowest end of the annular plate and the terminal end emitting device, and the distance between the starting end emitting device and the terminal end emitting device is L, L The value is 50cm, the start-end transmitting device of the laser speed sensor is set correspondingly to the start-end receiving device, the terminal-end transmitting device of the laser speed sensor is correspondingly set to the terminal-end receiving device, and the start-end transmitting device and the terminal-end transmitting device are set on the ring plate At the outer edge of the end face, the starting end receiving device and the terminal end receiving device are arranged at the inner edge of the end face of the annular plate, and the bottom ends of multiple springs are fixedly installed on the upper surface of the fixed plate, a balance training mechanism with information feedback function Installed on the upper surface of the fixed plate below the annular plate, a motor assembly is fixedly installed close to the shaking bracket, the motor assembly is installed on the upper surface of the fixed plate, a cam is fixedly installed on the output shaft of the motor, and the output shaft of the motor is vertically arranged , and there is a matching piece horizontally between the motor and an adjacent leg, one end of the fitting is fixedly installed on the outer surface of a leg, the fitting is set close to the cam, and the protruding end of the cam reaches the end of the leg The minimum distance is h, the length of the fitting is H, h is less than H, and the training hand-held weight assembly is set on the ring plate,

The balance training mechanism with information feedback function includes a pedal, a balance base, three distance measuring sensors and a control circuit, the pedal is flat, the balance base is a hemispherical base, and the plane of the hemispherical base is fixed to the bottom surface of the pedal connected, and the center line of the plane of the hemispherical base coincides with the center of the pedal; three distance measuring sensors are fixed on the bottom surface of the pedal, which are respectively the reference distance measuring sensor, the front distance measuring sensor and the left distance measuring sensor, and the three The distance measuring sensors are respectively fixed at the edge of the bottom surface of the pedal, wherein the connection line between the front distance measuring sensor and the left distance measuring sensor passes through the center of the pedal, and the connection line between the reference distance measuring sensor and the center of the pedal is perpendicular to the front distance measuring sensor and the left distance measuring sensor Sensor connection; the signal output terminal of the reference distance measuring sensor is connected to the reference distance signal input terminal of the control circuit, the signal output terminal of the front distance measuring sensor is connected to the front distance signal input terminal of the control circuit, and the signal output terminal of the left distance measuring sensor is connected to The left end of the control circuit is away from the signal input end; the display signal output end of the control circuit is connected to the display signal input end of the monitor;

A software-implemented control module is embedded in the control circuit, and the control module includes the following units:

The data acquisition unit is used to simultaneously collect the reference distance signal, the front-end distance signal and the left-end distance signal input by the three distance signal input terminals at each interval sampling time;

The comparison unit subtracts the reference distance signal from the received front end distance signal to obtain the front and rear distance difference signals; subtracts the reference distance signal from the received left end distance signal to obtain the left and right distance difference signals;

The display unit is used to convert the forward distance difference signal and the left and right distance difference signal into digital information or graphic information and send it to the display for display and output.

The beneficial effect of the present invention is: through the present invention, the athlete can overcome the unstable state and maintain the correct posture of exerting force. It is necessary to mobilize and activate more muscle fibers in the core parts through the cooperation of the waist, pelvis, hip joints and lower limbs, so as to stabilize the body For balance and exercise force, the balance training mechanism with information feedback function generates an electric signal to start the motor of the motor component to interact with the shaking bracket to increase the difficulty of new exercises. The pressure sensor with display wrapped around the handle controls the force. The speed curve is displayed, and then the overall sports technical process is effectively monitored in real time. The balance state of the athlete's body during exercise can be monitored in real time and effectively through the balance training mechanism with information feedback function. Through the laser speed sensor 50 to measure the practice speed of the final force, and then improve the athlete's efficiency of stable strength training for the final force of the hammer.

Description of drawings

Fig. 1 is a schematic view of the front view of the present invention, Fig. 2 is a view from the direction A of Fig. 1, Fig. 3 is a front view of the training hand-held weight assembly 1, Fig. 4 is a top view of B-B in Fig. 1, Fig. 5 is a view with information The schematic diagram of the principle of the electrical part of the balance training mechanism 17 with the feedback function, Fig. 6 is a schematic diagram of the principle of another electrical part of the balance training mechanism 17 with the information feedback function, Fig. 7 is a mechanical structure of the balance training device with the information feedback function 8 is a bottom view of FIG. 7 , and FIG. 9 is a front view of a plurality of height-adjustable limit mechanisms 23 , pedals 18 and balance bases 19 installed on a slide 20 .

detailed description

Specific embodiment one: this embodiment is described in conjunction with Fig. 1-Fig. Fitting 12, fixed plate 15, laser speed sensor 50 and balance training mechanism 17 with information feedback function, rocking bracket 2 includes ring plate 6, multiple legs 28 and multiple springs 9, motor assembly 16 includes motor 10 and Cam 11, training hand-held weight assembly 1 comprises connecting rod 24, handle 22, fixed block 14 and a plurality of weights 13, is wound with the pressure sensor that has display on the handle 22, and connecting rod 24 is ' L' shape bar body, connects One end of the rod 24 is fixed with a plurality of weights 13 through the fixed block 14, the handle 22 is fixedly installed on the other end of the connecting rod 24, a spring 9 is fixedly installed at the bottom of each supporting leg 28, and a plurality of supporting legs with different lengths 28 are uniformly arranged on the bottom of the annular plate 6, and the top of each leg 28 is fixedly installed on the lower end surface of the annular plate 6. The annular plate 6 is arranged obliquely, and the angle formed between the lower end surface of the annular plate 6 and the horizontal plane is R, R It is an acute angle, looking down at the annular plate 6, and looking counterclockwise from the lowest end to the highest end of the annular plate 6, a laser speed sensor 50 is arranged between the two, and the terminal end emission device 50-2 of the laser speed sensor 50 Located on the vertical central axis of the inclination direction of the annular plate 6, the starting end emitting device 50-1 of the laser speed sensor 50 is arranged between the lowest end of the annular plate 6 and the terminal end emitting device 50-2, and the starting end emitting device The distance between 50-1 and the terminal transmitting device 50-2 is L, and the value of L is 50cm. The starting terminal transmitting device 50-1 of the laser speed sensor 50 is set correspondingly to the starting terminal receiving device 50-4. The laser speed The terminal transmitting device 50-2 of the sensor 50 is set corresponding to the terminal receiving device 50-3, the starting terminal transmitting device 50-1 and the terminal terminal transmitting device 50-2 are arranged at the outer edge of the upper end surface of the annular plate 6, and the starting terminal The receiving device 50-4 and the terminal receiving device 50-3 are arranged at the inner edge of the upper end surface of the annular plate 6, and the bottom ends of a plurality of springs 9 are fixedly installed on the upper surface of the fixed plate 15, and the balance training with information feedback function The mechanism 17 is installed on the upper surface of the fixed plate 15 below the annular plate 6, and the motor assembly 16 is fixedly installed near the shaking bracket 2. The motor assembly 16 is installed on the upper surface of the fixed plate 15, and a motor assembly 10 is fixedly installed on the output shaft The output shaft of the cam 11 and the motor 10 is vertically arranged, and a fitting 12 is horizontally arranged between the motor 10 and an adjacent leg 28, and one end of the fitting 12 is fixedly mounted on the outer surface of a leg 28, The matching part 12 is arranged close to the cam 11, and the minimum distance from the protruding end of the cam 11 to the leg 28 is h, the length of the matching part 12 is H, and h is less than H, and the training handheld weight assembly 1 is arranged on the ring plate 6 ,

The described balance training mechanism 17 with information feedback function comprises pedal 18, balance base 19, three distance measuring sensors and control circuit 3, pedal 18 is flat plate, balance base 19 is a hemispherical base, and the hemispherical base The plane is fixedly connected to the bottom surface of the pedal 18, and the center line of the plane of the hemispherical base coincides with the center of the pedal 18; the bottom surface of the pedal 18 is fixed with three distance measuring sensors, which are respectively a reference distance measuring sensor 40 and a front distance measuring sensor. 41 and the left distance measuring sensor 42, the three distance measuring sensors are respectively fixed at the edge of the bottom surface of the pedal 18, wherein the connecting line of the front distance measuring sensor 41 and the left distance measuring sensor 42 passes through the center of the pedal 18, with reference to the distance measuring sensor 40 and the connecting line of pedal 18 centers are perpendicular to the connecting line of front distance measuring sensor 41 and left distance measuring sensor 42; The signal output end of the control circuit 3 is connected to the front end distance signal input end of the control circuit 3, and the signal output end of the left distance measuring sensor 42 is connected to the left end distance signal input end of the control circuit 3; the display signal output end of the control circuit 3 is connected to the display signal input of the display 8 end;

A control module implemented by software is embedded in the control circuit 3, and the control module includes the following units:

The data acquisition unit is used to simultaneously collect the reference distance signal, the front-end distance signal and the left-end distance signal input by the three distance signal input terminals at each interval sampling time;

The comparison unit subtracts the reference distance signal from the received front end distance signal to obtain the front and rear distance difference signals; subtracts the reference distance signal from the received left end distance signal to obtain the left and right distance difference signals;

The display unit is used to convert the forward distance difference signal and the left and right distance difference signal into digital information or graphic information and send it to the display for display and output.

In this embodiment, the models of the three ranging sensors are the same, and the output signals are all digital signals.

When the balance training mechanism 17 with information feedback function described in this embodiment is used in practice, the balance base 19 is placed in a flat area, and the trainer stands on the pedal 18 with one or both feet. 18 When tilt occurs, the three distance measuring sensors measure the distance from the ground respectively, and output the corresponding signal representing the distance to the control circuit, and the control module embedded in the load control circuit processes the three distance signals to obtain the balance state of the pedal , and display the output of the balance state through the monitor.

When displayed in digital form, the data with positive and negative signs can be used to indicate the distance difference between front and rear and left and right. The positive and negative signs indicate the direction of inclination, and the absolute value of the number indicates the inclination. Big.

When displayed in the form of graphics, an overall stereoscopic image of the balance training device may be displayed, and then the inclination state of the balance training device may be displayed according to the inclination. It is also possible to use a simple image, for example, to only display the balance state of the pedals.

Specific embodiment two: illustrate this embodiment in conjunction with Fig. 6, laser hammer core strength training and information feedback device of this embodiment, described control circuit 3 comprises three signal conditioning circuits, A/D conversion circuit, controller, keyboard 5 and three zeroing circuits; the control module is embedded in the controller, the three zeroing circuits correspond to the three signal conditioning circuits respectively, and the signal output end of each zeroing circuit is connected to a zeroing signal of a signal conditioning circuit Input end, the signal input end of described three signal conditioning circuits is respectively the reference distance signal input end of controller 4, the front end distance signal input end and the left end distance signal input end; The signal output end of described three signal conditioning circuits 41 Connect three analog signal input ends A1, A2 and A3 of A/D conversion circuit respectively, the digital signal output end of described A/D conversion circuit connects the signal acquisition signal input end of controller, the A/D of described controller The conversion control signal output end is connected to the conversion control signal input end of the A/D conversion circuit, and the display drive signal output end of the controller is connected to the signal input end of the display 8 .

The signal output end of described keyboard 5 is connected the keyboard signal input end of controller 4; Described control module also comprises following unit:

A key information acquisition unit, configured to receive key information input by the keyboard 5;

The button information decoding unit is used to judge the content of the obtained button information. When the button information is sampling time information, the sampling time information is used as the sampling time information; when the button information is output digital display information, a digital display command is sent to the display unit. ; When the button information bit image display information, send the graphics display command to the display unit;

The display unit sends corresponding display information to the display 8 according to the received command.

The output signals of the three ranging sensors in this embodiment are analog signals, and the analog signals are sent to the A/D conversion circuit after being processed by the signal conditioning circuit, and the A/D conversion circuit converts the analog signals into digital signals and sends them to the controller.

The controller 43 in this embodiment can be realized by a single-chip microcomputer.

In this embodiment, a keyboard 5 is added to realize the setting of parameters, for example, the sampling time of the sampling interval can be set, or the type of the displayed signal can be set to be digital or graphic and so on.

Specific Embodiment Three: This embodiment is described in conjunction with FIG. 6. In this embodiment, the laser hammer core strength training and information feedback device, the balance training mechanism 17 with information feedback function also includes a communication drive circuit 7, and the communication drive The signal input end of the circuit 7 is connected to the communication signal output end of the controller 4;

The control module further includes a communication unit, which is used to send the signal difference obtained by the comparison unit to the communication driving circuit.

In this embodiment, a communication drive circuit 7 is added, and the measurement result data obtained by the controller can be sent through the communication drive circuit 7, thereby realizing remote data transmission.

The communication driving circuit 44 described in this embodiment may be various existing serial communication driving circuits or wireless communication driving circuits. The serial communication driving circuit is a USB serial communication driving circuit, an RS485 serial communication driving circuit, an RS232 serial communication driving circuit or a network communication driving circuit.

The balance training device with information feedback function described in this embodiment can send measurement results to remote equipment in real time during training, thereby realizing the function of remote monitoring of training status.

Specific Embodiment Four: This embodiment is described in conjunction with Fig. 1, Fig. 7-Fig. 9, laser type hammer core strength training and information feedback device in this embodiment, the balance training mechanism 17 with information feedback function also includes base 20, base 20 The upper surface is provided with a circular groove 21 corresponding to the balance base 19, the bottom surface of the circular groove 21 is a spherical surface, the balance base 19 is placed in the circular groove 21, and the spherical surface of the bottom surface of the groove 21 The radius is greater than the radius of the spherical surface of the balance base 19, and the others are the same as those in Embodiment 1.

Specific embodiment five: this embodiment is described in conjunction with Fig. 1 and Fig. 9, the present embodiment laser formula hammer core strength training and information feedback device, described balance training structure 17 with information feedback function also includes a plurality of height-adjustable The limit mechanism 23, a plurality of height-adjustable limit mechanisms 23 are evenly distributed and fixedly installed on the upper surface of the slide plate 20, and the others are the same as the first embodiment.

Specific Embodiment Six: This embodiment is described in conjunction with Fig. 1 and Fig. 9. In this embodiment, the laser hammer hammer core strength training and information feedback device, the number of the plurality of height-adjustable limit mechanisms 23 is four to eight one, and the others are the same as in Embodiment 1.

Embodiment 7: In conjunction with FIG. 1 , the laser hammer core strength training and information feedback device in this embodiment, the value range of R is 33°-41°, and the others are the same as Embodiment 1.

Embodiment 8: This embodiment is described in conjunction with Fig. 1 and Fig. 2. In this embodiment, the laser type hammer ball core strength training and information feedback device, the inner diameter of the annular plate 6 is D1, and the value range of D1 is 2135mm. The outer diameter of 6 is D2, and the value range of D2 is 2145 mm, and the other is the same as the first embodiment.

Specific embodiment nine: this embodiment is described in conjunction with Fig. 1-Fig. 3, laser type hammer ball core strength training and information feedback device of this embodiment, described support leg 28 also comprises upper strut, strut sleeve and pin shaft 25, supports The outer wall of the rod sleeve is vertically processed with a plurality of pin shaft passing holes 26, and the bottom end of the upper pole is installed in the pole sleeve through the pin shaft passing holes 26, and the others are the same as in the first embodiment.

Specific Embodiment Ten: This embodiment is described in conjunction with Fig. 1, Fig. 2 and Fig. 4. In this embodiment, the laser type hammer ball core strength training and information feedback device, the rocking bracket 2 also includes a plurality of leg connecting seats 29 and a plurality of Connect the beam 27, the top of each upper pole is hinged with one end of a leg connecting seat 29, the other end of the leg connecting seat 29 is fixedly installed on the lower end surface of the annular plate 6, and two adjacent pole sleeves pass through a The connecting crossbeam 27 is fixedly connected, and the others are the same as the ninth embodiment.

Embodiment 11: This embodiment is described in conjunction with Fig. 1, Fig. 2 and Fig. 4. In this embodiment, the laser type hammer ball core strength training and information feedback device, the legs 28, a plurality of springs 9, and leg connecting seats 29 The number is equal to the number of connecting beams 27, and the number ranges from four to eight, and the others are the same as those in Embodiment 10.

working principle

In order to overcome the unstable state and maintain the correct force posture, athletes need to mobilize and recruit more core muscle fibers through the lower limbs of the waist, pelvis, and hip joint machine to participate in stabilizing body balance and exerting force in the movement, and perform laser hammer core strength When performing information feedback exercises, the trainer stands on the balance training mechanism 17 with information feedback function in an unstable state, and combines the characteristics of special strength close to the hammer throw through optimized design, and finally shakes the bracket 2 vigorously, holding it with his hands The handle 22 of the hammer training device carries out the exercise of the last force. At this time, the balance training mechanism 17 with the information feedback function starts to work, measures the amplitude of the swing of the balance mechanism, and performs quantitative processing of the information, and accordingly converts it into an electrical signal and a motor. The motor 10 of the assembly 16 is connected to generate interaction. With the improvement of the trainer's balance ability, the balance mechanism tends to be stable when the trainer exercises. Swing, to increase the difficulty of new exercises, through the handle 22 wrapped around the display with a pressure sensor to display the speed curve of the force, real-time information feedback to the entire action process, balance training mechanism with information feedback function 17 pairs of athletes The balance state of the body is monitored effectively in real time, and the final exertion speed is measured by the laser speed sensor 50 .

Claims (10)

1. The laser type hammer throw core strength training and information feedback device is characterized in that: the device includes a training hand-held weight component (1), a shaking bracket (2), a motor component (16), a fitting (12), a fixing plate (15), a laser speed sensor (50) and a balance training mechanism (17) with an information feedback function, the rocking support (2) includes an annular plate (6), a plurality of different length legs (28) and a plurality of springs (9), motor assembly (16) comprises motor (10) and cam (11), and training hand weight assembly (1) comprises connecting rod (24), handle (22), fixed block (14) and a plurality of weights (13), the handle (22) is wound with a pressure sensor with display, the connecting rod (24) is an 'L' shaped rod body, and one end of the connecting rod (24) is fixed with multiple weights ( 13), the handle (22) is fixedly mounted on the other end of the connecting rod (24), a spring (9) is fixedly mounted on the bottom of each leg (28), and multiple legs (28) of different lengths are evenly distributed It is arranged at the bottom of the annular plate (6), and the top of each supporting leg (28) is fixedly installed on the lower end surface of the annular plate (6). The angle formed is R, and R is an acute angle. Looking down at the annular plate (6), and looking counterclockwise from the lowest end to the highest end of the annular plate (6), a laser speed sensor (50) is arranged between the two, And the terminal launcher (50-2) of the laser speed sensor (50) is located on the vertical central axis of the annular plate (6) inclination direction, and the start launcher (50-1) of the laser speed sensor (50) is arranged on the ring The distance between the lowest end of the board (6) and the terminal launch device (50-2), and between the start launch device (50-1) and the terminal launch device (50-2) is L, The numerical value of L is 50cm, and the start-end launcher (50-1) of laser speed sensor (50) is correspondingly set with start-end receiver (50-4), and the end-end launcher (50-2) of laser speed sensor (50) ) is set correspondingly to the terminal receiving device (50-3), the starting terminal transmitting device (50-1) and the terminal terminal transmitting device (50-2) are arranged at the outer edge of the upper end surface of the annular plate (6), and the starting terminal receives The device (50-4) and the terminal receiving device (50-3) are arranged at the inner edge of the upper end surface of the annular plate (6), and the bottom ends of a plurality of springs (9) are fixedly installed on the upper surface of the fixed plate (15) , the balance training mechanism (17) with information feedback function is installed on the upper surface of the fixed plate (15) below the annular plate (6), and the motor assembly (16) is fixedly installed near the shaking bracket (2), and the motor assembly (16 ) is installed on the upper surface of the fixed plate (15), a cam (11) is fixedly installed on the output shaft of the motor (10), the output shaft of the motor (10) is vertically arranged, and the motor (10) and an adjacent A fitting (12) is horizontally provided between the supporting legs (28), and the fitting (1 2) One end is fixedly installed on the outer surface of a leg (28), the fitting (12) is set close to the cam (11), and the minimum distance from the protruding end of the cam (11) to the leg (28) is h , the length of the fitting (12) is H, h is less than H, and the training handheld weight component (1) is arranged on the annular plate (6); The balance training mechanism (17) with information feedback function includes a pedal (18), a balance base (19), three distance measuring sensors and a control circuit (3), the pedal (18) is flat, and the balance base (19 ) is a hemispherical base, the plane of the hemispherical base is fixedly connected with the bottom surface of the pedal (18), and the center line of the plane of the hemispherical base coincides with the center of the pedal (18); the bottom surface of the pedal (18) is fixed There are three distance measuring sensors, which are respectively a reference distance measuring sensor (40), a front distance measuring sensor (41) and a left distance measuring sensor (42), and the three distance measuring sensors are respectively fixed at the edge of the bottom surface of the pedal (18), Wherein the connecting line of the front ranging sensor (41) and the left ranging sensor (42) passes through the center of the pedal (18), and the connecting line of the reference ranging sensor (40) and the center of the pedal (18) is perpendicular to the preceding ranging sensor (41) and the connecting line of left distance measuring sensor (42); The signal output end of reference distance measuring sensor (40) connects the reference distance signal input end of control circuit (3), the signal output end of front distance measuring sensor (41) Connect the front end distance signal input end of the control circuit (3), the signal output end of the left distance measuring sensor (42) connects the left end distance signal input end of the control circuit (3); the display signal output end of the control circuit (3) connects the display ( 8) Display signal input terminal; A control module implemented by software is embedded in the control circuit (3), and the control module includes the following units: The data acquisition unit is used to simultaneously collect the reference distance signal, the front-end distance signal and the left-end distance signal input by the three distance signal input terminals at each interval sampling time; The comparison unit subtracts the reference distance signal from the received front end distance signal to obtain the front and rear distance difference signals; subtracts the reference distance signal from the received left end distance signal to obtain the left and right distance difference signals; The display unit is used to convert the front-rear distance difference signal and the left-right distance difference signal into digital information or graphic information and send it to the display for display and output. 2. according to the described laser type hammer throw core strength training and information feedback device of claim 1, it is characterized in that: described control circuit (3) comprises three signal conditioning circuits, A/D conversion circuit, controller and three zero adjustment circuits circuit; the control module is embedded in the controller, the three zeroing circuits correspond to the three signal conditioning circuits respectively, the signal output end of each zeroing circuit is connected to the zeroing signal input end of a signal conditioning circuit, and the The signal input terminals of the three signal conditioning circuits are respectively the reference distance signal input terminal, the front end distance signal input terminal and the left end distance signal input terminal of the controller (4); the signal output terminals of the three signal conditioning circuits are respectively connected to A/ The three analog signal input ends A1, A2 and A3 of the D conversion circuit, the digital signal output end of the A/D conversion circuit is connected to the signal acquisition signal input end of the controller, and the A/D conversion control signal output of the controller is The end is connected to the conversion control signal input end of the A/D conversion circuit, and the display driving signal output end of the controller is connected to the signal input end of the display (8). 3. according to the described laser type hammer throw core strength training and information feedback device of claim 1, it is characterized in that: the balance training mechanism (17) with information feedback function also comprises base (20), and base (20) upper surface is provided with A circular groove (21) corresponding to the balance base (19), the bottom surface of the circular groove (21) is a spherical surface, the balance base (19) is placed in the circular groove (21), and The spherical radius of the bottom surface of the groove (21) is greater than the radius of the spherical surface of the balance base (19). 4. according to the described laser type hammer throw core strength training and information feedback device of claim 1, it is characterized in that: the balance training mechanism (17) with information feedback function also includes a plurality of height-adjustable limit mechanisms (23 ), a plurality of height-adjustable limit mechanisms (23) are evenly distributed and fixedly installed on the upper surface of the slide plate (20). 5. The laser type hammer throw core strength training and information feedback device according to claim 4, characterized in that: the number of the plurality of height-adjustable limit mechanisms (23) is four to eight. 6. The laser type hammer throw core strength training and information feedback device according to claim 1, characterized in that: the value range of R is 33°-41°. 7. according to the described laser type hammer throw core strength training of claim 1 and information feedback device, it is characterized in that: the inner diameter of described annular plate (6) is D1, and the value of D1 is 2135mm, and the outer diameter of annular plate (6) is D2, and the value of D2 is 2145mm. 8. according to the described laser type hammer throw core strength training and information feedback device of claim 1, it is characterized in that: described support leg (28) also comprises last strut, strut cover and bearing pin (25), the support rod cover The outer wall is vertically processed with a plurality of pin shaft passing holes (26), and the bottom end of the upper pole is installed in the pole sleeve through the pin shaft passing holes (26). 9. according to the described laser type hammer throw core strength training and information feedback device of claim 8, it is characterized in that: described rocking support (2) also comprises a plurality of supporting leg connecting bases (29) and a plurality of connecting beams (27), The top of each upper strut is hinged with one end of a leg connecting seat (29), and the other end of the leg connecting seat (29) is fixedly installed on the lower end surface of the annular plate (6), and two adjacent strut sleeves The connection is fixed by a connecting beam (27). 10. The laser type hammer throw core strength training and information feedback device according to claim 9, characterized in that: the legs (28), a plurality of springs (9), leg connecting seats (29) and a plurality of connecting beams The number of (27) is equal, and the value range of the number is four to eight.