CN113447186A - Force measuring system of skis - Google Patents

Abstract

The invention discloses a force measuring system of a snowboard, which comprises the snowboard, a fixer assembly, a sensor assembly and a data acquisition assembly, wherein the fixer assembly is arranged on the snowboard; the snowboard is positioned at the bottom, a sensor assembly is fixed above the snowboard, a fixer assembly is fixed above the sensor assembly, the sensor assembly senses the force applied to the snowboard below and the fixer assembly above, the data acquisition assembly is connected with the sensor assembly, and the data acquisition assembly acquires a force signal sensed by the sensor assembly. The invention has higher accuracy, meets the use requirement of light weight, enables researchers to obtain good results based on more accurate data, and reduces the interference of measuring equipment to the athlete in the test process as much as possible.

Description

Force measuring system of skis

Technical Field

The invention belongs to the technical field of measuring equipment, and particularly relates to a force measuring system of a snowboard.

Background

In order to promote the scientificity and high efficiency of the training of skiers, the scientific training mode is an important component of the current sports success-making law, the scientific training is reasonable and effective integration of relevant factors of the sports training by the scientific means, and the success-making law of the scientific training is continuously known and thought in the process, so that the relevant ability of the skiers is developed according to a direction which can be monitored and predicted. Therefore, a corresponding force measuring system of the snowboard needs to be designed for the skier to detect the stress state and the motion state of the skier during the skiing process, so as to monitor the training condition of the skier during the skiing process in real time, and the quality of the force measuring monitoring system directly influences the training effect. But currently the market lacks such equipment systems.

The utility model discloses a chinese utility model patent of application number 201921840608X discloses a moment detection device, include: a binding for securing a snowboard; a suspension device for attachment to a ski boot on a ski that is secured by a ski binding; the limiting device is used for limiting the hoisting device at a preset position; the overturning driving device is used for driving the hoisting device to move away from the preset position so that the ski boot has the tendency of rotating around an axis parallel to the surface of the ski board on the ski; the pressure sensor is connected to the output end of the overturning driving device, the pressure sensor is clamped between the overturning driving device and the hoisting device to measure the force, and the overturning driving device can drive the pressure sensor to continue to move to be separated from the hoisting device under the state that the hoisting device is reset to the preset position. Through the cooperation of the overturning driving device, the hoisting device and the pressure sensor, the stress condition of the ski boot in the overturning process can be measured, and the overturning moment can be conveniently acquired. The device can only measure the stress condition of the ski boot in the overturning process, but cannot measure the human body balance condition and the load change in the skiing and training processes.

Disclosure of Invention

In order to solve the problems, the invention provides a force measuring system of a snowboard, which comprises the snowboard, a fixer assembly, a sensor assembly and a data acquisition assembly; the snowboard is positioned at the bottom, a sensor assembly is fixed above the snowboard, a fixer assembly is fixed above the sensor assembly, the sensor assembly senses the force applied to the snowboard below and the fixer assembly above, the data acquisition assembly is connected with the sensor assembly, and the data acquisition assembly acquires a force signal sensed by the sensor assembly.

Preferably, the sensor assembly comprises three component force sensors, and two three component force sensors are arranged on the snowboard and are respectively positioned at two sides of the bottom of the fixing assembly.

Preferably, the data acquisition assembly comprises a data acquisition box, a built-in power supply, a data transmission device and a data acquisition circuit board are arranged in the data acquisition box, and a switch and a power supply charging port are arranged outside the data acquisition box.

Preferably, the two three-component force sensors are matched with the snowboard to form a placing space together with the fixer assembly, and the data acquisition box is arranged in the placing space.

The preferred, three component force sensor include sensor housing and be located the inside upper base and the lower base of sensor housing, the upper base is installed in the top of base down, the upper base is the bar, the base is the rectangle down, the upper base includes the support arm, the both sides of support arm are equipped with first straining beam, the upper end middle part of support arm is equipped with the installation step, be equipped with the equipment bolt hole on the installation step, the lower base includes the second straining beam of symmetry and the third straining beam of bilateral symmetry.

Preferably, the data transmission device is a wifi transmitter or an SD card storage, the data result is wirelessly transmitted in real time through the wifi transmitter, and the data result is stored in real time through the SD card storage.

Preferably, the fixer subassembly includes the backing plate, the front end of backing plate top is equipped with preceding fixer, the rear end of backing plate top is equipped with the back fixer, preceding fixer includes preceding base, be equipped with the elasticity recess on the preceding base, the back fixer includes back base, brake pedal and back clamshell, brake pedal rotates with the back base to be connected, the back clamshell rotates with brake pedal to be connected.

Preferably, the rear fixer further comprises a stop sliding rod, one end of the stop sliding rod is connected with the brake pedal, and the other end of the stop sliding rod is a free end.

Preferably, the surface of the backing plate is provided with a slide rail, and the front base and the rear base are respectively arranged on the slide rail.

Preferably, the three-component force sensor main body is made of aviation aluminum alloy 7075T 651.

The invention has the advantages that:

1. the invention adopts a three-layer structure, the sensor and the data acquisition box are perfectly embedded between the snowboard components, the size, the weight and the height are proper, the exercise performance of a skier is not influenced, the force borne by the upper-layer fixer component and the lower-layer snowboard during the movement of the snowboard outputs bridge-circuit signals to the high-precision data acquisition box arranged in the middle gap of the snowboard through the strain type three-component force sensor connected in the middle, the high-precision data acquisition box transmits data to a user terminal through a built-in battery and wireless WIFI, or an SD card can be adopted to store data results in real time and wait for subsequent reading, thereby being convenient for observing the human body balance condition and the load change in the movement process of the skier.

2. The three-component force sensor main body material adopts aviation aluminum alloy 7075T 651, so that the three-component force sensor has the advantages of high strength, strong corrosion resistance and good mechanical property, the sensor can work under severe conditions, the data acquisition box is made of lightweight nylon, light weight equipment meeting requirements is manufactured, meanwhile, the strength and rigidity of the structure are guaranteed, and the actual use requirements are met. The three-component force sensor is designed based on the strain electric measurement principle, has high output signal temperature and sensitivity, and can effectively meet the training and testing requirements of a snowboard force measurement system. The invention has higher accuracy, meets the use requirement of light weight, enables researchers to obtain good results based on more accurate data, and reduces the interference of measuring equipment to the athlete in the test process as much as possible.

Drawings

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a diagram of the sensor housing structure of the present invention;

FIG. 3 is an internal cross-sectional view of a sensor of the present invention;

FIG. 4 is a side view of the data acquisition cartridge of the present invention;

FIG. 5 is an inside cross-sectional view of the data collection cassette of the present invention;

fig. 6 is a view showing the construction of the anchor assembly of the present invention.

In the figure: the device comprises asnowboard 1, a three-component force sensor 2, adata acquisition box 3, a built-inpower supply 4, adata transmission device 5, a dataacquisition circuit board 6, a switch 7, a power supply charging port 8, a mounting space 9, asensor shell 10, asupport arm 11, afirst strain beam 12, amounting step 13, adevice bolt hole 14, asecond strain beam 15, athird strain beam 16, abacking plate 17, afront fixer 18, arear fixer 19, afront base 20, anelastic groove 21, arear base 22, abrake pedal 23, arear shell cover 24, astop slide bar 25 and aslide rail 26.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

As shown in FIGS. 1-5, a snowboard force measuring system includes asnowboard 1, a binding assembly, a sensor assembly and a data acquisition assembly; thesnowboard 1 is positioned at the bottom, a sensor assembly is fixed above thesnowboard 1, a fixer assembly is fixed above the sensor assembly, the sensor assembly senses the force applied to thesnowboard 1 below and the fixer assembly above, a data acquisition assembly is connected with the sensor assembly, the data acquisition assembly acquires the force signal sensed by the sensor assembly and transmits the signal through a signal transmission device, thesnowboard 1, the fixer assembly, the sensor assembly and the data acquisition assembly are arranged in an upper-lower three-layer structure, specifically, the bottommost layer is thesnowboard 1, the front side and the rear side above the middle section of thesnowboard 1 are respectively provided with one sensor assembly, the fixer assemblies are arranged above the two sensor assemblies, the two sensor assemblies are respectively fixed with the fixer assembly above and thesnowboard 1 below through screws, and the fixer assembly is used for fixing snowshoes, the sportsman's motion process load transmits sensor assembly for through ski shoes and fixer subassembly, and simultaneously, the load change of theskis 1 of bottom also can directly transmit sensor assembly for, the fixer subassembly of cooperation top and theskis 1 of below are formed with a accommodation space 9 between two sensor assembly, the data acquisition subassembly is just installed in accommodation space 9, through adopting three layer construction, but expanded the design area, sensor anddata acquisition box 3 perfect inlay and between theskis 1 subassembly, big or small weight highly suitable, do not influence the performance of skiers training. The sensor component is a three-component force sensor 2, the three-component force sensor 2 comprises asensor shell 10, an upper base and a lower base which are positioned inside thesensor shell 10, the upper base is arranged above the lower base, the upper base is strip-shaped, the lower base is rectangular, the upper base and the lower base are fastened by matching inner hexagon screws and positioning pins, the upper base comprises asupport arm 11, two sides of thesupport arm 11 are provided withfirst strain beams 12, the middle part of the upper end of thesupport arm 11 is provided with amounting step 13, themounting step 13 is provided withequipment bolt holes 14, the lower base comprises asecond strain beam 15 which is symmetrical up and down and athird strain beam 16 which is symmetrical left and right, all the strain beams are adhered with resistance strain gauges, thethird strain beam 16 is used for detecting the force in the X direction, thesecond strain beam 15 is used for detecting the force in the Y direction, thefirst strain beam 12 is used for detecting the force in the Z direction, when a detected object is stressed, the main body upper base and the lower base strain beams can be elastically deformed under stress, so that the strain beams produce strain, the resistance strain gauge adhered to the strain beams converts the stress of a measured object from the elastic strain into resistance change, the resistance change is converted into voltage output through a Wheatstone bridge circuit, the voltage output is obtained through a display instrument, and finally the stress size and the stress direction of the measured object are generated through data analysis and processing. The output of the Wheatstone bridge circuit is used, so that the output signal of the sensor can be effectively increased, and the measurement accuracy of the sensor can be improved. The main body material of the three-component force sensor 2 is aviation aluminum alloy 7075T 651, the material has high strength, strong corrosion resistance and good mechanical property, the sensor can work under severe conditions, the data acquisition assembly comprises adata acquisition box 3, a built-inpower supply 4, adata transmission device 5 and a dataacquisition circuit board 6 are arranged inside thedata acquisition box 3, a switch 7 and a power supply charging port 8 are arranged outside thedata acquisition box 3, and the dataacquisition circuit board 6 comprises a signal conditioning circuit, an A/D conversion circuit, data resolving, data transmission, data storage and other modules. The analog signals of the two three-component force sensors 2 can be converted into digital signals which are convenient to resolve and transmit, and the accuracy and the speed of output data can reach a high level by matching with technologies such as high-speed acquisition and machine learning algorithm. The wifi transmitter is preferably adopted by thedata transmission device 5, so that the collected signals can be timely transmitted out through network signals, or the SD card storage is adopted to store data results in real time, and then the data are transmitted in a reading mode through equipment. In this embodiment, the sensor and thedata acquisition box 3 are both sealed and shielded, so that the force measurement system of the snowboard can meet the requirement of real training on snowfields, and the entry of snow caused by violent movement is avoided. The light nylon material ofdata acquisition box 3 then use, and the lightweight equipment that the preparation meets the requirements guarantees the intensity and the rigidity of structure simultaneously, satisfies the in-service use demand. The three-component force sensor 2 is designed based on the strain electric measurement principle, has high output signal temperature and sensitivity, and can effectively meet the training and testing requirements of a snowboard force measurement system. The invention has higher accuracy, meets the use requirement of light weight, enables researchers to obtain good results based on more accurate data, and reduces the interference of measuring equipment to the athlete in the test process as much as possible.

Example 2

As shown in fig. 6, the present embodiment has the same parts as those ofembodiment 1, and further describes the fastener assembly, the fastener assembly includes abacking plate 17, two sides of the lower side of thebacking plate 17 are fixedly connected with two three-component force sensors, respectively, afront fastener 18 is disposed at the front end of the upper side of thebacking plate 17, arear fastener 19 is disposed at the rear end of the upper side of thebacking plate 17, aslide rail 26 is disposed on the surface of thebacking plate 17, thefront fastener 18 and therear fastener 19 are disposed on theslide rail 26, respectively, thefront fastener 18 and therear fastener 19 can adjust the front-rear distance on theslide rail 26, and can be fixed by a built-in fixing device, respectively, thefront fastener 18 includes afront base 20, thefront base 20 is provided with anelastic groove 21, therear fastener 19 includes arear base 22, abrake pedal 23 and arear housing 24, thebrake pedal 23 is rotatably connected with therear base 22, therear housing 24 is rotatably connected with thebrake pedal 23, when the ski boot is fixed, the front end of the ski boot goes deep into theelastic groove 21 of thefront base 20, when the bottom of the rear end of the ski boot steps on thebrake pedal 23, therear shell cover 24 locks the rear end of the ski boot to lock the ski boot, therear fixer 19 further comprises aslide stop rod 25, one end of theslide stop rod 25 is connected with thebrake pedal 23, the other end of theslide stop rod 25 is a free end, theslide stop rod 25 acts along with the lifting and stepping-down action of the pedal, when thebrake pedal 23 is stepped on, the free end extends to the upper end of theski 1, a skier can slide uniformly, and when the pedal is lifted, the free end of theslide stop rod 25 extends to the lower end of theski 1 to prevent theski 1 from continuing to move forwards.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

Translated fromChinese

1.一种滑雪板测力系统，其特征在于：包括滑雪板（1）、固定器组件、传感器组件和数据采集组件；所述滑雪板（1）位于底部，所述滑雪板（1）的上方固定有传感器组件，所述传感器组件的上方固定有固定器组件，所述传感器组件感知下方滑雪板（1）以及上方固定器组件所受到的力，所述数据采集组件与传感器组件相连接，所述数据采集组件采集传感器组件所感受到的力的信号。1. A snowboard force measuring system, characterized in that: it comprises a snowboard (1), a binding component, a sensor component and a data acquisition component; the snowboard (1) is located at the bottom, and a sensor is fixed above the snowboard (1) An assembly, a binding assembly is fixed above the sensor assembly, the sensor assembly senses the force received by the lower ski (1) and the binding assembly above, the data acquisition assembly is connected with the sensor assembly, and the data acquisition assembly Acquire a signal of the force felt by the sensor assembly.2.根据权利要求1所述的滑雪板测力系统，其特征在于：所述传感器组件包括三分量力传感器（2），所述滑雪板（1）上设有两个三分量力传感器（2），两个所述三分量力传感器（2）分别位于固定器组件底部的两侧。2. The snowboard force measuring system according to claim 1, characterized in that: the sensor assembly comprises a three-component force sensor (2), and two three-component force sensors (2) are provided on the snowboard (1), The two three-component force sensors (2) are respectively located on both sides of the bottom of the holder assembly.3.根据权利要求1所述的滑雪板测力系统，其特征在于：所述数据采集组件包括数据采集盒（3），所述述数据采集盒（3）的内部设有内置电源（4）、数据传输装置（5）和数据采集电路板（6），所述数据采集盒（3）的外部设有开关（7）与电源充电口（8）。3. The snowboard force measuring system according to claim 1, characterized in that: the data acquisition component comprises a data acquisition box (3), and the data acquisition box (3) is provided with a built-in power supply (4), A data transmission device (5) and a data acquisition circuit board (6) are provided, and a switch (7) and a power charging port (8) are provided on the outside of the data acquisition box (3).4.根据权利要求1所述的滑雪板测力系统，其特征在于：两个所述三分量力传感器（2）配合滑雪板（1）与固定器组件形成有安置空间（9），所述数据采集盒（3）设置于安置空间（9）中。4. The snowboard force measuring system according to claim 1, characterized in that: the two three-component force sensors (2) cooperate with the snowboard (1) and the binding assembly to form a placement space (9), and the data collection The box (3) is arranged in the placement space (9).5.根据权利要求2所述的滑雪板测力系统，其特征在于：所述三分量力传感器（2）包括传感器壳体（10）以及位于传感器壳体（10）内部的上基座与下基座，所述上基座安装于下基座的上方，所述上基座为条形，所述下基座为矩形，所述上基座包括支臂（11），所述支臂（11）的两侧设有第一应变梁（12），所述支臂（11）的上端中部设有安装台阶（13），所述安装台阶（13）上设有设备螺栓孔（14），所述下基座包括上下对称的第二应变梁（15）以及左右对称的第三应变梁（16）。5 . The snowboard force measuring system according to claim 2 , wherein the three-component force sensor ( 2 ) comprises a sensor housing ( 10 ) and an upper base and a lower base located inside the sensor housing ( 10 ). 6 . The upper base is installed above the lower base, the upper base is strip-shaped, the lower base is rectangular, and the upper base includes a support arm (11), the support arm (11) ) are provided with first strain beams (12) on both sides, the middle of the upper end of the support arm (11) is provided with a mounting step (13), and the mounting step (13) is provided with equipment bolt holes (14), so The lower base includes a second strain beam (15) symmetrical up and down and a third strain beam (16) symmetrical left and right.6.根据权利要求3所述的滑雪板测力系统，其特征在于：所述数据传输装置为wifi发射器或者SD卡储存器，通过wifi发射器将数据结果实时无线传输，SD卡储存器将数据结果实时存储。6. The snowboard force measuring system according to claim 3 is characterized in that: the data transmission device is a wifi transmitter or an SD card storage device, and the data results are wirelessly transmitted in real time by the wifi transmitter, and the SD card storage device transmits the data in real time. Results are stored in real time.7.根据权利要求4所述的滑雪板测力系统，其特征在于：所述固定器组件包括垫板（17），所述垫板（17）上方的前端设有前固定器（18），所述垫板（17）上方的后端设有后固定器（19），所述前固定器（18）包括前底座（20），所述前底座（20）上设有弹性凹槽（21），所述后固定器（19）包括后底座（22）、制动踏板（23）与后壳罩（24），所述制动踏板（23）与后底座（22）转动连接，所述后壳罩（24）与制动踏板（23）转动连接。7. The snowboard force measuring system according to claim 4, characterized in that: the binding device comprises a backing plate (17), and the front end above the backing plate (17) is provided with a front binding device (18), so The rear end above the backing plate (17) is provided with a rear holder (19), the front holder (18) includes a front base (20), and an elastic groove (21) is provided on the front base (20). , the rear holder (19) includes a rear base (22), a brake pedal (23) and a rear casing (24), the brake pedal (23) is rotatably connected with the rear base (22), and the rear The housing cover (24) is rotatably connected with the brake pedal (23).8.根据权利要求7所述的滑雪板测力系统，其特征在于：所述后固定器（19）还包括止滑杆（25），所述止滑杆（25）的一端与制动踏板（23）连接，所述止滑杆（25）的另一端为自由端。8. The snowboard force measuring system according to claim 7, characterized in that: the rear binding device (19) further comprises an anti-slip bar (25), and one end of the anti-slip bar (25) is connected to the brake pedal ( 23) connection, the other end of the anti-slip rod (25) is the free end.9.根据权利要求8所述的滑雪板测力系统，其特征在于：所述垫板（17）的表面设有滑轨（26），所述前底座（20）和后底座（22）分别设于滑轨（26）上。9. The snowboard force measuring system according to claim 8, characterized in that: the surface of the backing plate (17) is provided with a slide rail (26), and the front base (20) and the rear base (22) are respectively provided with slide rails (26) on the slide rail (26).10. 根据权利要求2所述的滑雪板测力系统，其特征在于：所述三分量力传感器（2）主体材料采用航空铝合金7075 T651。10. The snowboard force measuring system according to claim 2, characterized in that: the main material of the three-component force sensor (2) adopts aviation aluminum alloy 7075 T651.

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