JP7089740B2 - Stock usage detection device and stock usage analysis method and device using it - Google Patents

Description

The present invention relates to a detection device for detecting stock usage status using stock, a stock usage status analysis method, and a stock usage status analysis device.
More specifically, how pedestrians use stock aids on pedestrian paths that utilize stock aids, such as mountain trails, that is, whether they are up or down, and how stock aids are used by advanced climbers. The present invention relates to a stock usage analysis method and an apparatus capable of analyzing whether or not the above conforms to the stock detection signal output, and a detection apparatus capable of detecting the stock usage status for that purpose.
In this specification, the term "stock" is treated as equivalent to the term "cane".

Walking with poles is especially common in mountaineering. It is said that the usage of stock in mountaineering differs greatly between beginners and experienced mountaineers.
However, conventionally, there is no index showing how pedestrians use stock, and therefore, a method of detecting and analyzing the skill of using stock by performing some kind of digitization or data conversion. Did not exist.

Conventionally, regarding the objective evaluation of the walking condition of a human being, for example, a person having a deteriorated walking function indicates a position where the cane is pierced when walking with a cane to assist walking (Patent Document 1). : JP-A-2017-158996), an attempt to detect the dependence of a cane user on a cane (Patent Document 2: JP-A-2013-48801), a cane user can detect the inclination of a cane. Those that detect the encounter of danger or accident (Patent Document 3: Japanese Patent Application Laid-Open No. 2011-78445), those that detect whether or not they are walking (Non-Patent Document 1), those that detect the walking state of a pine needle user. (Non-Patent Document 2), etc. existed.

However, in Patent Document 1, in order to stabilize the walking balance of a person who pokes a cane and walks, the acceleration or angular velocity of the cane is measured in order to inform the ground position where the cane is pierced by light irradiation (paragraph number). 0029, 0030), and although the cane has a sensor to detect the installation, it was not possible to detect and record the cane usage status of pedestrians using the cane.

In Patent Document 2, by objectively knowing the dependence of a cane on walking movements, even a person with little knowledge about canes or an inexperienced doctor can give appropriate advice on walking movements. (Paragraph number 0010), the load on the cane of the cane user is detected by the sensor, but since only the measurement data of the pressure applied to the cane by the user is used, the dependence can be evaluated. It was just.

Patent Document 3 describes a cane used by elderly people and persons with disabilities when walking, and adds various functions to improve the convenience of the cane (paragraph number 0001), and uses an inclination sensor. It provides a cane that performs multiple functions such as a pedometer function, an emergency alarm function, and a power consumption suppression function (paragraph number 0006), but the tilt sensor only detects whether the cane has fallen. The state of use of the cane to be detected was only simple, such as whether or not the cane fell (paragraph number 0008) and whether or not there was movement (paragraph number 0023).

Non-Patent Document 1 attaches an ultrasonic sensor to a four-point cane and estimates the state of walking, climbing stairs, and descending stairs (general section), but it can be estimated by walking. We have not made a detailed analysis of the cane usage status, such as whether or not it is present.

In Non-Patent Document 2, the gyro sensor and pressure sensor on the crutches are used to detect whether the crutch user is using the crutches properly and to efficiently learn how to use the crutches properly. However, the pressure sensor was merely for determining whether or not it was in contact with the ground.

JP-A-2017-158996 Japanese Unexamined Patent Publication No. 2013-48801 Japanese Unexamined Patent Publication No. 2011-78445

Proposal of a context estimation method for a 4-point cane user using an ultrasonic sensor (IPSJ Research Report, Vol.2014-UBI-42 No.4) Development of crutch three-turn walking training (Biomedical Engineering, Vol47 (2): 209-214, 2009)

These conventional techniques do not accurately detect the cane usage state of a person walking with a cane, much less objectively detect the stock usage status when using the stock in mountain climbing, for example. The matter was not known at all.

For example, the stock used for mountaineering has the effect of reducing fatigue because it obtains thrust on the uphill, keeps the balance on the downhill, and can disperse the load applied to the body. There was no means to objectively detect how to use stock, and there was no way to objectively convey the good or bad of how to use stock in mountaineering, for example, to beginners.
Regarding this usage, for example, the optimal stock usage will change depending on the slope of the mountain trail and the ground conditions, and if such stock usage can be objectively detected, stock usage will be used. The situation can be analyzed objectively, and it is possible to identify walking methods using appropriate stock. An object of the present invention is to provide an objective method for measuring stock usage in walking using stock, and a means for that purpose.

Further, in order to detect the stock usage status, the present invention is used by analyzing the output from the sensor provided in the stock, analyzing the usage status of the stock user, and further notifying the analysis result. It is also an issue to provide a system having an output processing unit for notifying a person or a walking method instructor of the usage status.

By attaching a sensor to the stock for walking and analyzing the output of the sensor, the present inventor can accurately analyze whether or not the stock is properly used, for example, in mountain climbing. The invention of the present application was reached by studying the relationship between the stock usage status in heading and mountain climbing and the output of the stock sensor.

Specifically, as a sensor fixed to the stock, a pressure measuring unit that measures the axial pressure of the stock and a stock motion measuring unit having an acceleration sensor that can detect the motion / impact of the stock are provided. Detect stock usage.
Then, it is possible to analyze the stock usage status of the measured sensor output by the analysis means and obtain an analysis result such as whether or not the stock usage status in walking using the stock is appropriate.

The pressure sensor and the acceleration sensor provided in the stock in order to obtain such a sensor output may be built in the stock, or may be detachable from the stock.

That is, the invention of the present application has the following configuration.
[1] A stock usage detection device that can be fixed to a stock, including a pressure sensor that detects the axial pressure of the stock and an acceleration sensor that detects the acceleration of the stock.
[2] A stock usage detection device in which a pressure sensor for detecting the axial pressure of the stock and an acceleration sensor for detecting the acceleration of the stock are built in the stock.
[3] The stock usage detection device according to [1] or [2], wherein the acceleration sensor is located at a position different from the pressure sensor in the stock.
[4] A stock usage state analyzer including the stock usage state detection device according to any one of [1] to [3], wherein the pressure detection value and the acceleration detection value are time-varying states for analysis. A stock usage analyzer that detects.
[5] The stock usage analysis device according to [4], which evaluates the walking condition of a stock user based on the time change of the acceleration detection value and the time change of the pressure detection value.
[6] The stock use according to [5], wherein the time change of the acceleration detection value and the time change of the pressure detection value are measured and recorded for the test stock usage status and compared with the time change in the reference stock usage status. Situation analyzer.
[7] The analysis target of the stock usage status is either the difference in climbing, descending, and flat road in the same user's mountain climbing, or the difference in mountain climbing skill between different users, [4] to [ 6] The stock usage analyzer according to any one of the items.
[8] The stock usage status analyzer according to any one of [5] to [7], further comprising an analysis result display means for allowing the stock user to recognize the analysis result of the walking status.
[9] The stock usage analyzer according to [8], further including a position detecting means, which displays an analysis result and / or a recommended stock usage method according to the position detection result.
[10] In the stock usage analysis method, the change in the axial pressure time of the stock and the change in the acceleration time of the stock are measured and recorded between the standard user of the stock and the test user, and the standard of the time change. A stock usage analysis method using the apparatus according to any one of [5] to [9], which analyzes the stock usage status based on the difference from the time change depending on the user.

In the stock usage detection device of the present invention, since the pressure sensor and the acceleration sensor are only provided on the stock, it is sufficient for the user to simply use the stock normally in order to detect the walking state.
That is, the stock usage status can be recorded and analyzed only by using the detected stock of the present invention normally.
If the analysis result is shown to the user, the user can know the deviation from the appropriate usage method, for example, and learn how to use the stock by devising the optimum stock usage situation. Can be done.
In addition, when walking on a pre-registered mountain trail, the sensor output is registered when the stock usage is optimal for the stock, so by knowing the difference between the actual sensor output and the registered output in real time, , The training effect can be increased. It is also possible to measure and record the stock usage status using the stock usage status detection stock, and analyze the stock usage status after the fact to judge the appropriateness.

The stock usage detection device of the present invention uses a pressure sensor and an acceleration sensor, but since these sensors can also be detachable, they can be attached to the stock that the user normally uses to acquire data. It can also be used for stock usage analysis.

The detection output from the sensor can be stored in a storage device fixed to the stock, or transmitted to a device distant from the stock for analysis by wireless communication, so the device fixed to the stock is compact. Can be. You can also have the stock fitted with all the equipment elements so that you don't need anything other than the stock.

For example, by using the stock usage detection device and the stock usage analysis device of the present invention in mountain climbing, it is possible to objectively determine the suitability of the stock usage method of the stock user in mountain climbing, and the conventional objective evaluation method has been used. It is possible to analyze and evaluate the technique of using stock in mountain climbing, which was not possible.
Since it is difficult to carry extra equipment in mountain climbing, the effect of the present invention is that complicated stock usage analysis can be performed by using only stock with a stock usage detection device. Is large.

In addition, not limited to mountain climbing, if this stock usage status detection stock and stock usage status analysis device are used, the stock usage status using stock can be objectively recognized, so stock usage status detection registered in advance can be performed. By comparing and analyzing the data and the stock usage detection data measured by the actual user, the difference in stock usage can be easily found. By analyzing the pattern of the detection data that can be detected, it is possible to analyze the cause of the difference in stock usage status, for example, by using a method of artificial intelligence learning.

Also in this analysis, as was found in the actual measurement example in mountain climbing, it is also possible to significantly discriminate the stock usage status only from the time change of the axial pressure of the stock and the peak distribution of the acceleration of the stock. Is the effect of.

FIG. 1 is a sketch showing an example of the stock usage status detecting device of the present invention. FIG. 2 is a cross-sectional view showing the details of the sensor unit 10 of the stock usage status detection device of FIG. FIG. 3 is a block diagram of an example of a part that processes data including a sensor part and a part that processes an output. FIG. 4 is an operation flowchart of the detection operation of the stock usage state analyzer of the present invention. FIG. 5 is a graph of an example of the pressure sensor output and the acceleration sensor output during climbing. FIG. 6 is a graph of an example of the pressure sensor output and the acceleration sensor output during the descent during mountain climbing. FIG. 7 is a graph of an example of the pressure sensor output and the acceleration sensor output at a dangerous place during mountain climbing. FIG. 8 is a block diagram of an example of a stock usage measuring device. FIG. 9 is a graph of an example of a three-way composite value of a pressure sensor output and an acceleration sensor output. FIG. 10 is a graph showing an example of the distribution of the three-way composite value of the acceleration sensor output and the integrated value of the pressure sensor output at the ascending, descending, and dangerous points. FIG. 11 is a block diagram of an example of a stock usage analysis device including a communication unit. FIG. 12 is a block diagram of an example of a stock usage analysis device including a position detection unit. FIG. 13 is an operation flowchart of an example of the stock usage state analyzer of the present invention, which includes notifying the recommended stock usage method. FIG. 14 is a diagram showing an example of a mountain trail map and a segment. FIG. 15 is an example of a table showing pairs of trail segments and stock usage. FIG. 16 is an operation flowchart of an example of a stock usage status analyzer that displays a recommended stock usage method.

(First Embodiment)
FIG. 1 shows an example of a stock usage measuring device in which a pressure sensor and an acceleration sensor can be attached to and detached from an existing stock. The stock usage status measuring device 10 shown in FIG. 1 is a stock tip cap type device used for measuring the stock usage status, and is used by being inserted into the bottom end of the stock.
In this embodiment, the pressure sensor and the acceleration sensor are present at substantially the same position in the stock, but the acceleration sensor may be provided at a position different from the pressure sensor, or a plurality of acceleration sensors may be provided. Generally, the acceleration value increases as the distance from the position where the stock is held by the hand to the position at the tip of the stock increases, but the tendency of the time change becomes the same.

FIG. 2 is a cross-sectional view of an example of the structure of the stock usage measuring device 10. The stock usage measuring device 10 has a pressure sensor 11, and a cylinder 12 is joined to the pressure sensor 11. Further, the piston rod 13 and the tip rubber cap 14 are joined to each other, and when the tip rubber cap 14 touches the ground, the contact pressure is transmitted to the pressure sensor 11 by the piston rod 13. Further, a stock insertion portion 15 is joined to the pressure sensor 11, and the stock can be inserted into the groove portion of the stock insertion portion. The electronic circuit unit 16 is an electronic circuit including an acceleration sensor, a memory, a microcomputer, and a battery, and the pressure sensor 11 is also electrically joined to the electronic circuit unit 16.

FIG. 3 is a block diagram showing a functional configuration of the stock usage status measuring device 10 according to the first embodiment. As shown in FIG. 3, the stock usage status measuring device 10 includes a pressure measuring unit 101, a stock operation measuring unit 102, a storage unit 103, a data processing / control unit 104, a power supply unit 105, and the like.
The pressure measuring unit 101 includes the pressure sensor 11 of FIG. 2, and is a measuring unit used to measure the pressure applied to the stock when the stock is grounded.

The pressure measuring unit 101 includes a pressure sensor 11, an amplifier circuit 101a, and an AD converter 101b shown in FIG.
The pressure sensor 11 is a sensor that converts the pressure applied to the pressure sensor 11 in the stock usage measurement device 10 into an electric signal, and the amplification circuit 101a amplifies the analog pressure signal obtained from the pressure sensor 11. Further, the AD converter 101b converts the pressure signal amplified by the amplifier circuit 101a into a digital signal.
The stock motion measuring unit 102 includes an acceleration sensor and is a measuring unit used for measuring the motion of the stock such as an impact when the stock touches the ground.

The stock operation measuring unit 102 includes an acceleration sensor 102a, an amplifier circuit 102b, and an AD converter 102c. The acceleration sensor 102a is a sensor that detects an acceleration signal representing an acceleration acting on the stock usage measuring device 10 and converts it into an electric signal. For example, each of the three orthogonal axes (orthogonal x-axis, y-axis, and z-axis). It is a 3-axis acceleration sensor that can detect an axial acceleration signal. The amplifier circuit 102b amplifies the analog acceleration signal obtained from the acceleration sensor 102a. Further, the AD converter 102c converts the acceleration signal amplified by the amplifier circuit 102b into a digital signal.
The storage unit 103 is a non-volatile memory, and stores, for example, a signal obtained from the pressure measuring unit 101 and the stock operating unit 102.

The data processing / control unit 104 is a processing device such as a microcomputer that controls the operation of each component in the stock usage status measuring device 10 and processes the obtained data.
The power supply unit 105 is a small battery and supplies power to each component in the stock usage measurement device 10.

The operation of an example of the stock usage measuring device of the present invention is as shown in the flowchart of FIG.
When the measurement of the stock usage status measuring device 10 is started, the pressure measuring unit 101 and the stock operation measuring unit 102 convert the pressure signal and the acceleration signal into digital signals, respectively (steps S1 and S2). The data processing / control unit 104 sends the digital signal values of the pressure signal and the acceleration signal obtained from the pressure measurement unit 101 and the stock operation measurement unit 102 to the storage unit 103, and records the digital signal value in the storage unit (step S3). .. Steps S1 to S3 are repeated if the end condition is not satisfied (step S4). Here, the end condition may be a voltage value supplied from the power supply unit 105, or the data processing / control unit 104 may send an end signal.
A series of processes from step S1 to step S4 are executed at predetermined time intervals (for example, 5 msec intervals).
The time resolution of the pressure signal recording is, for example, 5 times or more per second, and the recording time resolution of the acceleration signal is more accurate than the recording time resolution of the pressure signal (for example, 200 times per second). That is, S1 and S2 may be executed at the same time, or S1 may not be executed while S2 is executed.
With the above configuration, the stock usage measuring device 10 measures and records the stock acceleration signal and pressure signal related to the stock operation of the stock user.

Here, the stock operation measured and recorded by the stock usage measuring device 10 will be described with reference to FIGS. 5, 6, and 7.
5, FIG. 6 and FIG. 7 are examples of the pressure signal and the acceleration signal measured by the stock usage measuring device according to the first embodiment, FIG. 5 is an ascending climbing, and FIG. 6 is a climbing. Downhill, FIG. 7 records a series of operations from grounding the stock to applying a load to the stock and moving the stock to the next stock grounding position at a dangerous point during mountain climbing.
When the stock user grips the grip of the stock, the acceleration sensor 102a capable of measuring in the orthogonal three-axis directions of the stock motion measuring unit 102 has an X-axis in the front-rear direction, a Y-axis in the vertical direction, and a Z in the left-right direction. It is installed so as to be a shaft.

First, when the stock user touches the stock to the ground, the value of the acceleration signal shows an impulse-like waveform, and then when the stock user applies a load to the stock, the value of the pressure signal rises. Furthermore, when the load on the stock weakens and the stock is moved upward, the value of the acceleration Y axis (vertical direction) rises, and then, as the stock moves forward, the acceleration X axis (front-back direction) The value of is increased.
Comparing the stock movements of the ascending (Fig. 5), descending (Fig. 6), and dangerous points (Fig. 7), in the ascending, the load is applied to the stock after the stock touches down, and the load applied to the body is distributed to the stock, and the thrust is increased. It is possible to measure how the stock is obtained when the stock is grounded on the descent, no load is applied to the stock, and the stock is grounded at a faster pace than the ascending, and is used for balance assistance. At dangerous points, the load applied to the stock is large and multi-peaked after the stock touches down, and it can be measured that the load on the stock is carefully controlled to maintain balance.

As described above, the stock usage measurement device 10 can measure the usage status of stock whose stock usage method changes depending on the slope of mountain climbing or the condition of the road.
In the above, the structure of the stock usage measuring device 10 to be inserted into the bottom end has been described, but instead of the pressure sensor 11, for example, a strain sensor whose conductivity changes due to expansion and contraction is attached to the expansion and contraction side surface of the stock. , The shape may be such that the amount of expansion and contraction of the stock is measured as pressure.
Further, the stock usage status measuring device 10 does not have the tip rubber cap 14 or the stock insertion portion 15, and may be embedded in the stock in advance.

(Second embodiment)
Next, the function of analyzing the stock usage status based on the detection signal and notifying the analysis result of the above-mentioned stock usage status analyzer will be described.
FIG. 8 is a block diagram showing a functional configuration of the stock usage status measuring device 20 according to the present embodiment. In FIG. 8, the same parts as those in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.
As shown in FIG. 8, the stock usage measuring device 20 includes a notification unit 106 in addition to the functional configuration of the stock usage measuring device 10 of FIG.
The notification unit 106 is installed above the stock so that the stock user can visually or audibly check the stock usage status, for example, with a display or a speaker, and the stock usage status can easily reach the stock user's sight or hearing. It does not necessarily have to be in the same place as the pressure measuring unit 101 and the stock operation measuring unit 102.

The notification unit 106 may directly display the pressure value obtained from the pressure measurement unit 101 and the acceleration value obtained from the stock operation measurement unit 102, or may be, for example, the pressure value obtained from the pressure measurement unit 101. The stock usage status estimated from the acceleration value obtained from the stock motion measuring unit 102 may be displayed.

（accxは、加速度X軸、accyは加速度y軸、acczは加速度z軸の値である）に、カットオフ周波数４０Hzのハイパスフィルタをかけ、全波整流を施した値であり、ストックが地面に接触した際に生じる加速度のインパルス状の波を検出しやすいような処理を施している。
図９で、合成加速度のインパルス状の波形の頂点の値は、ストックの「接地の衝撃」を客観的に示し、合成加速度のインパルス状の波形の後に現れる圧力の上昇の積分値は、「荷重負荷の分担および推力」を客観的に示すと考えられる。 An example of the stock usage status and its estimation method will be described with reference to FIGS. 9 and 10.
As mentioned above, the usage status of the stock includes at least four states of "load sharing and thrust", "balance assistance (downward)", "balance assistance (danger avoidance)", and "no stock". The state can be expressed by the impact of the stock touchdown and the pressure applied to the stock after the stock touchdown.
FIG. 9 is a graph of the combined acceleration obtained by synthesizing the three axes of the pressure value measured by the pressure measuring unit 101 and the acceleration value measured by the stock motion measuring unit 102.
The combined acceleration shown in FIG. 9 is

(Acx is the value of the acceleration X axis, accy is the value of the acceleration y axis, accz is the value of the acceleration z axis), a high-pass filter with a cutoff frequency of 40 Hz is applied, and full-wave rectification is applied. It is processed so that it is easy to detect the impulse-like wave of acceleration generated when it comes into contact.
In FIG. 9, the value at the apex of the impulse-like waveform of the combined acceleration objectively indicates the “ground impact” of the stock, and the integral value of the pressure rise that appears after the impulse-like waveform of the combined acceleration is the “load”. It is considered to objectively show "load sharing and thrust".

For the apex of the impulse-like waveform of the combined acceleration (impact of grounding), for example, the apex of the wave whose pressure is below a predetermined threshold (for example, 50 gf or less) and the combined acceleration is above a predetermined threshold (for example, 10 or more) is detected. do. At this time, if a plurality of vertices are detected within a predetermined time (for example, within 1 sec), the largest value is treated as a vertex. After the apex of the impulse-like waveform of the combined acceleration is detected, the added value of the portion where the pressure is equal to or higher than a predetermined threshold value (for example, 50 gf) is calculated as the integrated value of the pressure.
FIG. 10 shows the relationship between the value of the apex of the impulse-like waveform of the combined acceleration and the integrated value of the pressure. As shown in Fig. 10, the three states of "load sharing and thrust", "balance assistance (downward)" and "balance assistance (danger avoidance)" are classified according to the apex of the impulse-like waveform of the combined acceleration and the integrated value of the pressure. can. Further, when there is no impulse-like waveform of synthetic acceleration and no pressure rise for a predetermined time or longer, it can be identified as "not using stock", and the above four states can be classified. For example, the identification threshold is calculated in advance by SVM (Support Vector Machine) or the like using experimental data, and each of the four states is identified at the time of mountain climbing.

The notification unit 106 expresses each identified state with characters, an image, blinking light, voice, pitch, melody, and the like, and conveys it to the stock user.
The above estimation algorithm is an example, and the waveform itself may be classified by a classifier such as machine learning. Further, in the estimation algorithm, the data processing / control unit 104 accesses and executes the algorithm stored in the storage unit 103 in advance.
Further, as shown in the functional block diagram of the stock usage status measuring device provided with the communication unit shown in FIG. 11, the stock usage status measuring device 21 has a communication unit 107 instead of the notification unit 106, and performs data processing and results. The notification may be given by an external device. Here, the communication unit 107 is, for example, Bluetooth (registered trademark), Wi-Fi, or the like, and the external device is a personal computer, a tablet terminal, a smart phone, or the like.
In this way, the stock user can confirm his / her own stock usage status by the notification unit prepared for the stock or the notification via an external device.

(Third embodiment)
(Training / notification of appropriate usage status)
A training / notification function is added to the stock usage analyzer described above.
This stock usage analysis device is provided with a position detection unit, and by executing a program stored in the storage unit 103 by the data processing / control unit 104, the stock user can be informed of the stock usage status and the recommended stock usage method. The point that the comparison results can be presented is a function added to the above-mentioned stock usage analysis device.

FIG. 12 is a block diagram showing a functional configuration of the stock usage status measuring device 30 to which a training / notification function is added. In FIG. 12, the same parts as those in FIGS. 3, 8, and 11 are designated by the same reference numerals, and detailed description thereof will be omitted.
As shown in FIG. 12, the stock usage measuring device 30 includes a position detecting unit 108 in addition to the functional configuration of FIG.
The position detection unit 108 detects the current position of the stock user, and is, for example, a GPS (Global Positioning System) module or the like.

The storage unit 103 is notified in advance by comparing a mountain trail map consisting of position data, a table storing recommended stock usage methods associated with position data, and stock usage status and recommended stock usage methods of stock users. The program to be executed is remembered.
The data used as the recommended stock usage method can be collected and stored in advance by the stock of the present invention, and theoretically, appropriate stock pressure data and acceleration data are set and stored. It can also be used as data on how to use the recommended stock.

FIG. 13 is a flowchart of a program relating to usage status notification for the recommended stock usage method of the stock usage status measuring device 30 described above. Hereinafter, the flow of usage status notification for the recommended stock usage method will be described with reference to FIGS. 13, 14, and 15.
When the measurement of the stock usage status measuring device 30 is started,
The position of the stock user is detected from the signal obtained by the position detection unit 108 (step S5).
Next, based on the signal obtained by the position detection unit 108, the traveling direction of the stock user is determined, and it is determined whether the stock user is walking in the up direction or the down direction (step). S6). In the present embodiment, "up" means the direction from the mountain climbing entrance to the summit, and "downhill" means the direction from the mountain climbing entrance to the mountain climbing entrance.
The traveling direction of the stock user can be expressed by a direction vector obtained from the past log and the current log by keeping a short-time log of the position detection unit 108. Further, the storage unit 103 stores a mountain trail map composed of position data as shown in FIG. 14, and by comparing the walking direction vector of the stock user and the current location with the mountain trail map, ascending / descending can be performed. It can be judged.

Further, the current stock usage status of the stock user is analyzed (step S7).
The stock usage status is, for example, four states in which the stock usage status is classified by the method described in the second embodiment.
Next, the recommended stock usage method at that point is obtained from the current position of the stock user detected in step S5 and the ascending / descending information determined in step S6, and compared with the current stock usage status of the stock user in step S7. do. As shown in FIG. 15, for example, the recommended stock usage method is a table in which the recommended stock usage method is set in advance from the relationship between the walking position of the stock user and the ascent / descent. This table may be one in which a skilled person climbs a mountain in advance and records the method of using the stock of the skilled person, or may be created by a person familiar with mountain climbing. As shown in FIG. 15, the segment of FIG. 14 is a mountain trail that continues to use the same recommended stock as one segment and is divided into a plurality of segments, and the same situation (slope, rocky area, gravel, etc.) The road is continuing.

Based on the comparison result, the notification unit 106 notifies the correct stock usage method when the stock usage status of the stock user and the recommended stock usage method are different (step S9). The correct stock usage notification may be a specific image, sound or voice, or may be displayed if the stock usage matches the recommended stock usage.
From the above, the stock user can know whether or not his / her stock usage status is the recommended stock usage method according to the condition of the mountain trail.

Further, as shown in FIG. 16, the program related to the usage status notification for the recommended stock usage method of the stock usage status measuring device 30 may present the stock user with the recommended stock usage method according to the mountain trail to be followed (). Step S10). The mountain trail to be advanced is a segment in which the stock user is in the direction of the future based on the current position and the ascending / descending information.
In addition, although the above example shows an example of use on an actual mountain trail, the user uses stock before actual mountain climbing in a closed space simulating mountain climbing, a mountain climbing simulator, mountain climbing VR (Virtual Reality), etc. It is also effective for learning how to do it.

In the above explanation, in the stock usage analysis, the pressure time change and the acceleration time change in the usage situation of the standard user, the pressure time change and the acceleration time change in the measured usage situation, the integrated value of the former and the latter Although the example described using the synthetic value has been described, it is possible to analyze various usage situations by analyzing the degree of similarity and the degree of agreement by, for example, comparing by pattern recognition, artificial intelligence, or the like.

10: Sensor unit 11: Pressure sensor 12: Cylinder 13: Piston rod 14: Tip rubber cap 15: Stock insertion unit 16: Electronic circuit unit 101: Pressure system side unit 102: Stock operation measurement unit 101a, 102b: Amplifier circuit 101b , 102c: AD converter 103: Storage unit 104: Data processing / control unit 105: Power supply unit 106: Notification unit 107: Communication unit 108: Position detection unit

Claims (10)

From a detector fixed to the stock, including a pressure sensor that detects the axial pressure of the stock and an acceleration sensor that detects the acceleration of the stock, and a time change state pattern of the pressure detection value from the pressure sensor and the acceleration sensor. It is a stock usage detection device that analyzes the stock usage status from the time change pattern of the acceleration detection value of, and the usage status that is the analysis target includes the road surface condition including the difference between uphill and downhill. The stock usage detector, including the differences between the two . The device according to claim 1, wherein the pressure sensor that detects the axial pressure of the stock and the acceleration sensor that detects the acceleration of the stock are detachable from the stock. The device according to claim 1 or 2 , which detects ascending walking, descending walking, danger avoidance walking, and stock non-use based on the absolute value of acceleration and the integrated value of pressure rise . The device according to any one of claims 1 to 3, wherein the difference in the road surface condition is the road surface condition on a mountain trail . The device according to any one of claims 1 to 4, further including the usage skill of the stock user as an analysis target . The apparatus according to claim 5, wherein the time change pattern of the acceleration detection value and the time change pattern of the pressure detection value are measured and recorded for the test stock usage status and compared with the time change pattern in the reference stock usage status. The apparatus according to any one of claims 1 to 6 , further comprising an analysis result display means for enabling a stock user to recognize an analysis result of a walking situation. The device according to claim 7 , further comprising a walking position detecting means, which displays an analysis result and / or a recommended stock usage method according to the walking position detection result. The apparatus according to claim 8, wherein a pre-registered route is set, and the detection output registered in advance for the route is used. It is a stock usage analysis method, in which the axial pressure time change of the stock and the acceleration time change of the stock are measured and recorded between the standard user of the stock and the test user, and the time change is measured and recorded by the standard user. The stock usage analysis method using the apparatus according to any one of claims 1 to 9, which analyzes the stock usage status based on the difference from the time change.

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