JP2717673B2 - Ski posture recognition device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a ski posture recognition device, and more particularly, to a technique for accurately and easily determining whether a skier's posture in the front-back direction is good or bad.

[Conventional technology]

Skis, which are known as one of winter sports, hold a ski boot in a detachable manner on a sliding member such as a ski via a binding, and in this state, a skier (competitor or player) can perform the above-described operation. It is to wear ski boots and slide down the slope. Then, on a normal slope excluding a specific snow condition or a downhill location, for a skier to smoothly and smoothly slide down the slope,
It is desirable that the skier himself take a moderate forward leaning posture.
That is, if the skier maintains a forward leaning posture in which the skier leans forward with respect to the downhill direction, rotation (turn), braking and stopping, etc. are performed satisfactorily. If the skier is downhill in a posture, it becomes difficult to perform the above-mentioned rotation, braking and the like satisfactorily. For this reason, skiers are usually downhill with trial and error so that they can take a forward leaning posture at their discretion.

[Problems to be solved by the invention]

By the way, if the determination as to whether or not the user is in the forward leaning position is left to the skier's own feeling, the following problem occurs.

In other words, if the skier tries to descend while maintaining the forward leaning posture, the skier must lean forward at a considerable angle and then slide down the inclined surface downward due to the fact that the downhill itself such as a slope is inclined. It will have to be done. Therefore, even if the skier feels that he is leaning forward,
In many cases, it is not in a substantially forward leaning posture, and even if it is left to another person to determine the forward leaning posture, it is difficult for others to make a subtle judgment. As a result, the skier does not notice this despite the fact that the skier is leaning backwards against his own intention, and as a result, the skier's runaway and fall, as well as the beginner's skiing skill improvement, is a great obstacle. Had become.

In addition, such a problem is not limited to skiing performed on snow, but also occurs similarly in the case of grass skiing or turf skiing performed on grasslands or artificial grass.

By the way, Japanese Patent Laying-Open No. 57-6673 discloses a configuration of a ski analyzer including a plurality of load sensors for detecting a load state applied to each of left and right skis. However, a plurality of load sensors, which are components of this ski analyzer, are mounted only for the purpose of knowing the weight distribution ratio to the left and right skis, and are used to measure the weight before and after the past ski. No control method for obtaining the distribution ratio is employed. For this reason, according to the above-mentioned ski analyzer, it is necessary to determine whether the load is acting on one of the right and left skis, that is, whether the edging is performed on the left or right ski as described in the publication. It is only possible to determine items, but not items such as whether or not the skier is in a forward leaning posture. The purpose of this ski analyzer is to improve alpine competition skiing (rotational competition, etc.) to compete for speed.
In addition, it is intended for an expert, and in such a case, it is not so important to determine whether the vehicle is in the forward leaning posture or the backward leaning posture. On the other hand, in the case of skiing that does not compete for speed, or if it is intended for beginners, in order to improve skiing technology,
It is extremely important to determine whether the vehicle is in the forward leaning posture. Therefore, even if the ski analyzer is used, it does not prevent the above-mentioned runaway or fall of the skier, nor can it improve the skiing skill of a beginner.

According to JP-A-60-160681 and JP-A-63-161981, a posture sensor including an angle sensor provided at a knee joint of a trainee and a pressure sensor provided at the sole of a foot is provided. There is disclosed a ski training machine that displays a signal from the attitude sensor in comparison with a reference signal. However, in these publications, when comparing the signal from the pressure sensor and the signal from the angle sensor constituting the attitude sensor with the reference signal, what kind of signal is the reference signal, and Regarding what kind of numbers are displayed as a result of comparison,
No description is made. However, it is obvious from the contents described in the publication that the posture of the trainee is recognized based on signals from both the pressure sensor and the angle sensor. Therefore, in this case, it can be understood that the comparison between the pressure applied to the left and right skis and the reference pressure, and the comparison between the flexion angle of the trainee's knee and the reference angle are performed. Then, the pressure sensor in this case can only detect how much load is applied to each of the left and right skis as in the above-described case, and taking this into account, the pressure sensor before and after the load on the individual skis can be considered. It is clear that a control method for obtaining the distribution ratio of the data has not been adopted. In addition, the columns of the effect of the invention in these publications suggest that it is possible to confirm the posture at the time of leaning forward and backward. In this case, the posture is confirmed by the trainee by his own sense. Further, there is no clarification as to whether the processing is performed by the video camera described in the publication or based on a signal from the attitude sensor. Also, even if the trainee's posture is confirmed based on the signal from the posture sensor, the magnitude of the pressure acting on each of the left and right skis, in other words, the edging state, and the trainee's posture You can only confirm the degree of knee flexion. In this case, even if the magnitude of the flexion angle of the trainee's knee is known, the degree of weight applied in the front-rear direction such as whether the trainee is in a substantially forward leaning posture is not known. Therefore, as a result, it is impossible to prevent runaway and fall of the skier as in the case described above.

Further, according to Japanese Utility Model Application Laid-Open No. 61-176429, load sensors are embedded at a total of three places on the front and rear sides of the sole plate of the ski boot, and the skier takes a forward leaning posture based on signals from these load sensors. A method is described in which it is determined whether or not the operation is performed. More specifically, in this method, the output signals of the three load sensors are compared by a comparison circuit to detect a position where the highest output signal is obtained, and the skier recognizes the result of this detection, thereby causing the skier to lean forward. To let you know if you are taking Therefore, according to this method, for example, when the output signal of the load sensor tilted forward is higher than the output signal of the load sensor on the rear side,
Regardless of the height, the skier is determined to be in a forward leaning posture, and conversely, the skier is determined to be in a backward leaning posture. For this reason, even if the load is applied substantially equally to the front side and the rear side, it is determined that the vehicle is in the forward leaning posture if the load on the front side slightly exceeds the load on the rear side. Conversely, if the load on the rear side slightly exceeds the load on the front side, it is determined that the vehicle is in the rearwardly inclined posture. In this case, considering the degree of forward leaning that the skier must take, when the front load is only slightly higher as described above and the load on the front side and the rear side is substantially equal, In many cases, there is a problem that the skier runs out of control due to insufficient leaning forward, and therefore, in such a case, it cannot be said that an effective forward leaning posture is taken. Nevertheless, according to this publication, even such a state is determined to be a forward leaning posture. In other words, since the comparison circuit in this publication determines only which of the forward load and the rear load is greater, it is determined whether the degree of forward lean has reached a level that does not cause runaway or the like. Such a thing cannot be determined. Specifically, for example, assuming that the weight of the skier is 60 kg, when the front load reaches a value such as 40 kg or 50 kg, that is, the difference between the load of the front side and the rear side is 20 kg.
Alternatively, when the value exceeds a value such as 40 kg, it may be necessary to determine that the vehicle is in a forward leaning posture that does not cause runaway or the like. In addition, even when the rear load is smaller than the front load, if the difference between the two is less than 20 kg or 40 kg in the above example, it is determined that the vehicle is in the substantially backward leaning posture. Sometimes you have to do it. However, in this publication, a method of determining the forward leaning posture or the backward leaning posture based on the difference between the front load and the rear load is not adopted. Cannot be requested. Therefore, even if the method described in this publication is used, it is not possible to appropriately cope with a runaway or fall of the skier due to the irrationality of the posture recognition.

The present invention addresses the above situation in the related art, and enables the skier to accurately and easily determine the skier's posture related to the degree of weight applied in the front-rear direction, such as whether or not he or she is in a forward leaning posture. In addition, an object of the present invention is to be able to determine a forward leaning posture or a backward leaning posture, which is extremely effective in avoiding a runaway or a fall of a skier due to the irrationality of posture recognition.

[Means for solving the problem]

The first means for achieving the above object is to compare the signals from the load detecting means for detecting the loads acting on the front side and the rear side of the sole of the skier's feet with the signals from these load detecting means. Control means for determining a comparison value as the comparison result and determining whether or not the comparison value is equal to or more than a predetermined value.

The second means is that a load detecting means for detecting the load on the front side and the load on the rear side of the skier is attached to a member located on the back side of the member on which the load directly acts, and the load detecting means is provided. And a control means for comparing the signals from the comparators to determine a comparison value as a comparison result and determining whether or not the comparison value is equal to or greater than a predetermined value.

Further, as a third means, the inclination angle of the movable member receiving the load from the sole of the skier changes due to the difference in load between the front side and the rear side of the sole of the skier. In addition to the above, there is provided an electrical judgment means for judging whether or not the inclination angle of the movable member is equal to or more than a predetermined value while supporting the movable member through an elastic body.

[Action]

According to the first means, the load acting on the front and rear sides of the sole of the skier is detected by the load detecting means such as a pressure sensor. Then, the control means compares the detected loads to determine a comparison value (for example, a difference) as a result of the comparison, and further determines whether or not the comparison value is equal to or more than a predetermined value. By recognizing the determination result in this case, the skier can know whether he or she is taking an effective forward leaning posture or a reasonable backward leaning posture.

That is, the control means determines the forward leaning posture by adopting a method of calculating a comparison value between the front load and the rear load, and determines the forward leaning posture as in the related art (Japanese Utility Model Laid-Open No. 61-176429). Various problems in the case where the forward leaning posture is determined by determining only which load is larger without employing the method of determining the value can be avoided.

Specifically, by adopting the control method as the first means of the present invention, it is possible to prevent the determination of the effective forward leaning posture and the backward leaning posture, which is impossible with the conventional method, that is, to avoid runaway or the like. This makes it possible to make a rational determination of a forward leaning posture for making the image, and a determination of an effective backward leaning posture for dealing with a special situation.

When the determination result is the forward leaning posture or the backward leaning posture, for example, a signal may be sent from the control means to the warning generating means to generate a predetermined warning. The alarm generating means may be constituted by a buzzer or the like. In this case, the control means may be configured to sound a buzzer sound by operating the control means, or may be controlled to emit a buzzer sound or an electronic sound at all times. The sound color may be changed by the operation of the means.

According to the second means, a load detection means such as a pressure sensor is provided on a member located on the back side of a buzzer (footwear such as ski boots) on which the load of the skier directly acts, and the load on the front side or the rear side of the skier is provided. Is detected by the load detecting means via footwear such as ski boots. In other words,
The weight of the skier does not act on the load detecting means directly from the sole of the foot, but acts on the load detecting means via footwear such as ski boots. And the control means,
These detected loads are compared to determine a comparison value (for example, a difference) as a result of the comparison, and it is further determined whether or not the comparison value is equal to or greater than a predetermined value. By recognizing the determination result in this case, the skier can know whether he or she is taking an effective forward leaning posture or a reasonable backward leaning posture.

According to such a configuration, not only the same operation and effect as those of the first means are obtained, but also a comparison value of the load on the front side and the load on the rear side acting on the member on the back side through footwear such as ski boots. Is determined by the control means, the skier can more accurately recognize the state of his / her posture, in other words, the state of action of his / her weight on a snow surface or the like. This is because all of the deviation of the skier's weight in the front-rear direction is transmitted to members on the back side through footwear such as ski boots, and eventually transmitted to the snow surface or the like.

Note that the above-mentioned footwear such as ski boots is not limited to ski boots used in a normal ski slope, and is worn when a normal ski is not used (for example, when a sliding member of a type such as roller skates is used). It also includes footwear and the like.

According to the third means, the inclination angle of the movable member that receives the load from the sole of the skier (the inclination angle falls with respect to the front-rear direction) changes due to the difference between the front load and the rear load. Then, when the movable member deforms the elastic body and its inclination angle becomes a predetermined value or more, this fact is recognized by the electric determination means. In other words, the electrical determination means determines whether or not a comparison value (for example, a difference) between the front and rear loads acting on the movable member is equal to or greater than a predetermined value. Also in this case, in addition to being able to obtain the same operation and effect as the above-described first means, since the movable member is appropriately inclined, the state of the forwardly inclined posture and the backwardly inclined posture is changed. The skier himself will be able to perceive it physically, and will be able to more clearly understand the posture that he is taking.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, a first embodiment of a ski posture recognition apparatus according to the present invention will be described with reference to FIG.

As shown in FIG. 1, a front binding 2 and a rear binding 3 are fixed to the upper surface of a ski 1, and a ski boot 4 is detachably attached to the bindings 2 and 3. . Load detecting means 5 and 6, which are pressure sensors, are embedded in the front end and the rear end of the sole wall 4a of the ski boot 4, respectively. The signals a and b from the two load detecting means 5 and 6 are input to a control means 7 comprising a comparing circuit, and the control means 7 compares the two signals a and b and outputs the comparison result. The alarm signal c is output to the alarm generating means 8 which is a buzzer based on the above.

According to such a configuration, the front load acting on the front side of the skier's foot is detected by the front load detecting means 5, and the rear load acting on the back side of the sole of the skier is detected by the rear load detection means. Detected by means 6. Then, the control means 7 outputs signals a and b from the load detection means 5 and 6 respectively.
And outputs a warning signal c to the alarm defeat means 8 when the rear load is greater than the front load by a predetermined value or more. Thereby, when the degree of bias of the load with respect to the rear side of the sole of the skier is equal to or greater than a predetermined value, that is, when the skier is in the backward tilted posture, an alarm (for example, a buzzer sound) is issued from the alarm generating means 8. Will be. The control means 7 may output an alarm signal c to the alarm generation means 8 when the front load is larger than the rear load by a predetermined value or more. When the condition is satisfied, a warning is issued from the warning generating means 8.

FIGS. 2 to 5 show the second to fifth embodiments of the present invention. In these embodiments, the same components as those in the above-described first embodiment are denoted by the same reference numerals. The description is omitted.

The second embodiment shown in FIG. 2 is different from the first embodiment in that a holding member (plate) 10 is detachably mounted on the upper surface of the sole wall 4a of the ski boot 4, and the front end of the holding member 10 The load detecting means 5 and 6 are embedded in the portion and the rear end, respectively. Therefore, in the second embodiment, the same operation and effect as those of the first embodiment can be obtained, and if necessary, the holding member 10, the load detecting means 5, 6,
The control means 7 and the alarm generation means 8 can be removed.

The third embodiment shown in FIG. 3 is different from the second embodiment in that a holding member 10 in which load detecting means 5 and 6 are embedded is provided.
Are detachably attached to the lower surface of the sole wall 4a of the ski boot 4. Therefore, in the third embodiment, the same operation and effect as in the second embodiment can be obtained.

The fourth embodiment shown in FIG. 4 differs from the first to third embodiments in that the binding 2 on the front side and the sole wall of the ski boot 4 are provided.
4a Between the lower surface and the rear binding 3 and the ski boots 4
Load detecting means 5, 6 between the shoe sole wall 4a and the lower surface of the
It is located where. More specifically, the one shown in FIG. 1 has load detection means 5, 6 attached to the front and rear bindings 2, 3, and these load detection means 5,
6 is configured so that a load acts on the sole 4 of the ski boot 4. According to such a configuration, the weight of the skier can be measured directly from the sole of the foot by the load detecting means 5,
6, it acts on the load detecting means 5, 6 via the ski boot 4. Therefore, for example, when the skier's knee is bent in a state of protruding forward, the vicinity of the shin of the skier presses the front wall portion of the ski boot 4 forward, but the pressing force is also taken into consideration. The applied load acts on the load detecting means 5 and 6 from the sole wall 4a of the ski boot 4. Thus, it is possible to accurately determine whether or not the skier is in the forward leaning posture only by the load detecting means 5 and 6 on the back side of the ski boot 4 without separately attaching a load detecting means to the front side wall portion of the ski boot 4. It is possible to do. This is skier 4
There is a basic concept that all of the shift of the weight of the skier in the forward or backward direction while wearing the ski is transmitted to the bindings 2 and 3 and the ski 1 and eventually the snow surface through the ski boots 4. It is because of that. In the case of the third embodiment, it is expected that the same effect can be obtained. And this 4th
In this embodiment, basically, the same operation and effect as those of the first embodiment can be obtained.

The fifth embodiment shown in FIG. 5 is different from the first to fourth embodiments in that the distance between the front binding 2 and the upper surface of the ski 1 and the distance between the rear binding 3 and the upper surface of the ski 1 are different. Are provided with load detecting means 5 and 6, respectively. According to the fifth embodiment, the same operation and effect as those of the fourth embodiment can be obtained.

The sixth embodiment shown in FIG. 6 is different from the first to fifth embodiments in that elastic bodies 11 and 12 made of springs (elastic bodies made of rubber or the like may be provided on the upper surface of the sole wall 4a of the ski boot 4). ) Is attached to the movable member 13, and an electrical determination means for determining whether the inclination angle of the movable member 13 is equal to or more than a predetermined value is provided. The electrical determination means includes a first contact portion 14 provided at a rear end of the movable member 13 and a second contact portion 15 provided correspondingly on the upper surface of the shoe bottom wall 4a,
The first and second contact portions 14 and 15 serve as switches of the alarm generating means 8. Therefore, according to the sixth embodiment, when the rear load acting on the rear side of the sole of the skier is larger than the front load acting on the front side by a predetermined value or more, that is, when the rear side of the movable member 13 When the inclination angle becomes equal to or more than a predetermined value, the first contact portion 14 and the second contact portion 15 come into contact with each other, and the switch of the alarm generating means 8 is closed. Will be emitted. Needless to say, the first and second contact portions 14 and 15 may be provided at the front end of the movable member 13 and the front end of the shoe sole wall 4a.

In the above first to sixth embodiments, the present invention is applied to a sliding member made of a ski. However, a roller skate in which a sliding member rotatably holds, for example, a roller or the like. The present invention can be similarly applied to a member of such a type.

[Effects of the Invention] Since the ski posture recognition device according to the present invention is configured as described above, it has the following effects.

That is, according to the first aspect of the present invention, based on the operation of the control means, the front load and the rear load detected by the load detection means are compared to determine the comparison value, and the comparison value is equal to or more than a predetermined value. It is compared with the conventional case in which only the larger of the front load and the rear load is detected to determine the forward leaning posture and the backward leaning posture, as in the conventional case. Thus, it is possible to determine a forward leaning posture that is extremely effective in avoiding the occurrence of runaway due to lack of forward leaning, and an effective backward leaning posture for dealing with a special situation.

Further, according to the invention described in claim 2, since the member existing on the back side of the member (footwear such as ski boots) on which the load of the skier directly acts is provided with the load detecting means,
The weight of the skier does not act on the load detecting means directly from the sole of the foot, but acts on the load detecting means via footwear such as ski boots. The control means compares the detected loads to determine a comparison value that is a result of the comparison, and further determines whether the comparison value is equal to or greater than a predetermined value. Not only the same effects as in the case of the invention described in 1 are obtained, but also the action state of the skier's weight on the snow surface or the like can be more accurately recognized.

Further, according to the third aspect of the present invention, when the movable member deforms the elastic body and the inclination angle thereof becomes a predetermined value or more, the fact is recognized by the electric determination means. In this case, in addition to the effect similar to that of the invention described in claim 1, it is possible to obtain the same effect, and in addition, the movable member is provided in accordance with the applied state of the load from the sole of the skier's foot. Since it is inclined as appropriate, it becomes possible to sense the state of the forward leaning posture and the backward leaning posture,
The advantage is obtained that the skier's own posture can be grasped more clearly.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a schematic configuration diagram showing the entire configuration of the first embodiment of the present invention, FIG. 2 is a schematic configuration diagram showing a second embodiment of the present invention, FIG. 3 is a schematic diagram showing a third embodiment of the present invention, FIG. 4 is a schematic diagram showing a fourth embodiment of the present invention, and FIG. 5 is a schematic diagram showing a fifth embodiment of the present invention. FIG. 6 is a schematic configuration diagram showing a sixth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Sliding member (ski board) 2 ... Front binding 3 ... Rear binding 4 ... Ski boots 5, 6 ... Load detecting means 7 ... Control means 14, 15 ... Electrical determination means ( Contact part)

Claims (3)

(57) [Claims] A load detecting means for detecting a load acting on a front side and a rear side of a sole of a skier; comparing signals from the load detecting means to determine a comparison value as a comparison result; Control means for determining whether or not the comparison value is equal to or greater than a predetermined value. 2. A load detecting means for detecting a load on the front side and a load on the rear side of the skier is attached to a member located on the back side of the member on which the load directly acts, and signals from these load detecting means are compared. And a control means for determining a comparison value as a result of the comparison and determining whether or not the comparison value is equal to or greater than a predetermined value. 3. A movable member which receives a load from the sole of a skier is provided with an elastic body so that its inclination angle changes due to a difference in load between the front side and the rear side of the sole of the skier. A ski attitude recognition device, further comprising an electrical determination means for determining whether or not the inclination angle of the movable member is equal to or greater than a predetermined value.