KR101458386B1 - Cadence measurement system using bicycle shoes - Google Patents

Abstract

The present invention relates to a device for measuring momentum, and more particularly, it relates to a device for measuring the momentum of a bicycle using a shoe having a rotation detecting means including an acceleration sensor, The present invention relates to a bicycle cadence measuring system using a shoe for guiding a bike riding operation method according to the present invention. It is possible to physically measure the foot, that is, the number of revolutions of the crank, which is generated by turning the pedal of the crank by attaching the mounted shoes, and by using the rotation detecting means attached to the shoe, Can count the number of revolutions of a physical crank, calculate and display the bicycle cadence Number, and it is possible to measure the quantity of exercise more precise, it is possible to provide a riding help information in accordance with the calculated cadence is having an effect capable of learning the best way pedaling for novice riders.

Description

{Cadence measurement system using bicycle shoes}

The present invention relates to a device for measuring momentum, and more particularly, it relates to a device for measuring the momentum of a bicycle using a shoe having a rotation detecting means including an acceleration sensor, (Or "riding assistance information") of the bicycle cadence measuring system using the shoe.

Recently, efforts have been made to reduce environmental pollution under the slogan of low carbon green growth. One of the measures to reduce environmental pollution is to encourage the use of bicycles. In addition to expanding bicycle roads on stream roads and city arterial roads to encourage the use of bicycles, various bicycling campaigns are being conducted.

Bicycles used for commuting and sports are provided with convenience for bicycle riders (hereinafter referred to as "riders"), and speedometers for identifying and storing their exercise status and exercise information have been developed and sold. As such a speedometer, a GPS speedometer for measuring the speed by using the moving distance and time based on the position measured by the GPS, and a magnetic speedometer for measuring the speed by measuring the circumference and the rotation speed of the bicycle wheel are mainly used. Examples of the GPS speed meter include a smart phone and a dedicated GPS speed meter to which various bicycle exercise applications using a GPS function are applied. A typical application uses a GPS to calculate the travel path and speed of a bicycle, mileage driving time, calorie consumption, etc., and displays it through a liquid crystal display of a smartphone. The speedometer displays the time and the number of revolutions of the bicycle wheel Calculate the speed, mileage, and travel time of the bicycle.

Also, in recent years, Cadence has become important as an index for providing a riding method for maximizing the momentum. Cadence refers to the number of revolutions per minute (crank) per minute.

As Cadence becomes more important, a wide variety of Cadence measurement devices have been developed and marketed.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a configuration of a bicycle equipped with a general magnetic type speedometer and a magnetic type cadence device. FIG. Hereinafter, the configuration and operation of the magnetic field velocity meter and magnetic field cadence measuring device will be described with reference to FIG.

The magnetic field velocity meter includes a magnet 11 installed on the spoke 7 of the bicycle wheel 6 and a magnetic field detection sensor 12 connected to the fork and detecting the magnetic field of the magnet 11 periodically according to the rotation of the wheel And the sensor unit 13 is connected to the sensor unit 13 by wire or wirelessly and is connected to the sensor unit 13 by the rotation speed of the wheel and the circumference information inputted from the sensor unit 13, , An average speed, and the like, and calculates and displays a running time or the like by the timer.

1, a conventional cadence measuring apparatus includes a magnet 20 attached to a crank 4, a down tube 9 of a bicycle frame, and a sensor 21 coupled to the seat tube 10 to sense the magnet. And a terminal unit 22 for receiving the pedal rotation signal from the sensor 21 and calculating and displaying the pedal revolutions per minute (cadence).

The terminal unit 14 of the magnetic field velocity meter and the terminal unit 22 of the magnetic field type cadence measuring apparatus may be constituted by one terminal device.

As described above, there is a problem that the GPS speedometer only measures the movement amount indirectly by the movement distance by the GPS and the number of revolutions of the wheel, and can not provide the exercise information based on the actual physical momentum of the rider.

In addition, the bike exercise program through the application of the conventional smart phone provides only the simple measurement data such as the real time speed, the average speed, and the travel distance based on the GPS alone, so that the problem that the cadence, which is one of the important exercise information for the bicycle riding, have.

In addition, the magnetic field type speedometer has a disadvantage in that a magnet is attached to a bicycle wheel and a magnetic field sensor is fixed to a bicycle frame (fork) corresponding to a position where the magnet is attached.

Also, the conventional magnetic field type speedometer measures the momentum only based on the number of revolutions of the tire, and thus has a problem that the cadence can not be measured.

The magnetic field type cadence measuring device also has a disadvantage that the magnet is attached to the pedal or the crank and the magnetic field sensor is fixed to the down tube and the seat tube of the bicycle corresponding to the position where the magnet is attached.

Published Patent No. 10-2010-0103341 Published Patent No. 10-2011-0034969

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a shoe having a rotation detecting means including an acceleration sensor, And a bicycle cadence measuring system using the shoe to measure and display bicycle cadence based on the number of revolutions of the crank and guide the riding assistance information according to the measured cadence.

According to another aspect of the present invention, there is provided a bicycle cadence measuring system using a shoe, comprising: an acceleration detecting device for detecting and outputting a rotation of a pedal by rotation of a shoe when the bicycle pedal of the rider, ; A cadence table defining a number of front and rear gears according to a difference between an optimum number of rotations, an optimum number of rotations and an actual number of rotations per cadence (index), and a cadence DB storing guide data for riding helper guidance, Determines the optimum number of gears corresponding to the calculated cadence by referring to the cadence table, combines the determined number of gears with the riding aid information data to provide riding help information And a cadence terminal.

Wherein the acceleration detecting device comprises: an acceleration sensor for outputting an acceleration signal including a rotational direction component according to a rotation direction of the shoe; A communication unit for wirelessly transmitting rotation information according to the rotation detection to the cadence terminal; The acceleration signal is analyzed to detect rotation direction vectors according to a rotation direction component of the acceleration signal. The rotation direction vectors are used to determine whether or not the rotation direction is one rotation. To the cadence terminal through the control unit.

The control unit monitors whether an acceleration signal is input from the acceleration sensor unit, converts the acceleration signal into acceleration information when an initial acceleration signal is input, and outputs the acceleration information. A direction analyzer for analyzing a direction component from the acceleration information and calculating a direction vector; A rotation determination unit for comparing the direction vector output from the direction analysis unit and the direction vectors of the previous acceleration signal to determine whether the rotation is one rotation; And a rotation information generation unit for generating rotation information when the rotation determination unit determines one rotation and transmitting the rotation information to the cadence terminal through the communication unit.

The rotation determining unit compares the direction of the calculated direction vector with the direction of the previous direction vectors, and determines that the previous direction vectors are one rotation if there is a matching direction vector among the previous direction vectors.

The rotation determining unit determines that the rotation direction is one rotation when the direction conversion of 180 degrees occurs twice in the initial direction vector among the previous direction vectors including the calculated direction vector.

The cadence terminal includes: the cadence DB; A communication unit for performing data communication with the rotation detection device by radio and receiving rotation information; A cadence controller for calculating a cadence by the number of revolutions detected by the acceleration detecting device, determining an optimum number of gears corresponding to the calculated cadence, combining the determined number of gears and the riding aid information data to provide riding assistance information; And a display unit for receiving and displaying the riding assistance information.

The cadence control unit includes: a timer for counting time; A rotation information input determining unit that monitors whether rotation information is received from the rotation detecting device through the communication unit and outputs a rotation information reception signal and rotation information upon reception of rotation information; A rotation number counting unit for receiving the rotation information reception signal and counting and outputting the rotation number; A motion information measuring unit for calculating a cadence by the rotation number and a cadence reference time counted by the timer; And a help information generation unit for determining an optimal number of gears corresponding to the calculated cadence with reference to the cadence table, combining the determined number of gears with the riding assistance guidance data, and outputting riding help information to the display unit do.

The acceleration detecting device transmits rotation information including rotation time information about one rotation at the time of rotation detection to the cadence terminal, and the cadence control unit monitors whether rotation information is received from the rotation detection device through the communication unit A rotation information input judging unit for outputting a rotation information reception signal and rotation information upon reception of rotation information; A rotation number counting unit for receiving the rotation information reception signal and counting and outputting the rotation number; A motion information measurement unit for calculating a cadence by obtaining a rotation number per a reference time of a cadence based on the rotation number and rotation time information included in the rotation information; And a help information generation unit for determining an optimal number of gears corresponding to the calculated cadence with reference to the cadence table, combining the determined number of gears with the riding assistance guidance data, and outputting riding help information to the display unit do.

The cadence terminal is a smart phone equipped with an application for receiving rotation information from the acceleration detection device wirelessly, calculating and displaying the cadence, and providing riding assistance information.

The present invention is not limited to measuring indirectly the momentum using the number of revolutions of the wheel and the distance of the GPS, but it is also possible that the rider uses the foot generated by rotating the pedal of the crank, It is possible to physically measure the number of revolutions of the motor.

Further, according to the present invention, the rotation detecting means attached to the shoe can be used to measure the rotational speed of a physical crank, whose force is changed by the rotation of the foot by the foot, so that the bicycle cadence can be calculated and displayed, It has an effect of measuring the momentum.

In addition, since the present invention can provide riding assistance information according to the calculated cadence, it is possible to learn an optimal pedaling method for novice riders.

In addition, since only the cadence terminal needs to be attached to the shoe provided with the acceleration detecting device of the present invention, it is advantageous in that it is easy to install.

1 is a diagram showing a configuration of a bicycle equipped with a general magnetic type speedometer and a magnetic type cadence measuring device.
2 is a diagram illustrating a configuration of a bicycle cadence measuring system using a shoe according to the present invention.
FIG. 3 is a detailed block diagram of a bicycle cadence measuring system using a shoe according to the present invention.
4 is a flowchart illustrating a method of detecting and providing rotation speed in a rotation detecting device according to an embodiment of the present invention.
5 is a flowchart illustrating a method of calculating a cadence in a cadence terminal according to an exemplary embodiment of the present invention.
FIG. 6 is a diagram illustrating the direction vectors of the foot on the pedal of the crank arm according to the present invention.

Hereinafter, the configuration and operation of the bicycle cadence measuring system using the shoe according to the present invention will be described with reference to the accompanying drawings.

2 is a diagram illustrating a configuration of a bicycle cadence measuring system using a shoe according to the present invention.

Referring to FIG. 2, the bicycle cadence measuring system using the shoe according to the present invention includes a rotation detecting device 200 inserted in the insole of the middle of the shoe 100 to detect the rotation of the foot mounted on the shoe and wirelessly transmit the rotation, And a cadence terminal 300 receiving the number of revolutions of the foot from the device 200 and calculating and displaying the cadence. The rotation detecting device 200 may be mounted on a pedal of a bicycle and a pedal of a crank arm. However, the following description focuses on the case of being installed in a shoe.

Specifically, when the rider raises the foot on the pedal 5 of the bicycle by turning the shoe 100 on which the rotation detecting device 200 according to the present invention is installed, and then rotates, the rotation detecting device 200 rotates once per rotation, (E.g., 10 times) to the cadence terminal 300.

Since the rotation detecting device 200 is constructed inside the insole of the shoe 100, it is preferable that the rotation detecting device 200 is packaged so as to be waterproof against washing and raining, and it is desirably configured to be detachable. Since the rotation detecting device 200 must use a battery as a power source, it is preferable that the rotation detecting device 200 is configured to be able to replace the battery.

The cadence terminal 300 stores riding assistance information according to the cadence, receives the rotation number signal from the rotation detection device 200, calculates and displays the cadence according to the rotation number, Displays help information. The rotation speed information received from the rotation detecting device 200 may be a dedicated terminal for displaying the cadence calculation according to the present invention and the calculated riding assistance information based on the calculated cadence. And a smart phone equipped with an application for displaying the calculation result of the calculation of the cadence and the help information of the calculation by the calculated cadence.

FIG. 3 is a detailed block diagram of a bicycle cadence measuring system using a shoe according to the present invention, and FIG. 6 is a diagram illustrating direction vectors of a foot placed on a pedal of a crank arm according to the present invention. The detailed configuration and operation of the rotation detecting device 200 and the cadence terminal 300 of the cadence measuring system will be described with reference to FIGS. 3 and 6. FIG.

The rotation detecting device 200 includes an acceleration sensor unit 210, a control unit 220, a communication unit 230, a battery 240, and a power source unit 250. [ And may further include a power switch 260 according to an embodiment.

The acceleration sensor unit 210 includes an acceleration sensor or acceleration sensor and a gyro sensor having three or more axes. The acceleration sensor unit 210 periodically generates an acceleration signal including a rotational direction and a velocity (intensity) component according to the rotation of the shoe, Output.

The communication unit 230 is a wired / wireless communication device. When the rotation detecting device 200 of the present invention is installed on a shoe, a wireless communication device is preferably used. When the rotation detecting device 200 is installed on a pedal and a crank arm of a bicycle, Can be applied. Wireless communication devices may be Bluetooth, WiFi, Zigbee, and the like. Generally, since the smartphone is configured as a Bluetooth wireless communication device, it is preferable that the communication unit 230 applies the Bluetooth wireless communication device.

The battery 240 may be a button-type mercury battery, a rechargeable nickel-hydrogen rechargeable battery, or the like, and may be desirably detachable from the rotation detecting device 200.

The power supply unit 250 receives the source power from the battery 250 and generates and supplies driving power to the acceleration sensor unit 210, the control unit 220, and the communication unit 230.

The control unit 220 analyzes the direction of the acceleration signal input from the acceleration sensor unit 210, determines the rotation based on the analyzed direction, generates rotation information upon determination of rotation, and transmits the rotation information to the cadence terminal 300). Also, the controller 220 receives the power on / off signal from the cadence terminal 300 through the communication unit 230 and performs a rotation detection operation according to the present invention. The control unit 220 may be configured to provide only the minimum power to the communication unit 230 to monitor whether the power on / off signal is received when the power off signal is input. Or a power switch 260 for shutting off and supplying the source power provided from the battery 240 to the power source 250 in order to prevent the minimum power consumption.

Specifically, the control unit 220 includes an acceleration signal input determination unit 221, a timer 222, a direction analysis unit 223, a rotation determination unit 224, and a rotation information generation unit 225.

The acceleration signal input determination unit 221 is connected to the acceleration sensor unit 210 to determine whether an acceleration signal is input from the acceleration sensor unit 210. The initialization signal input unit 221 drives the timer 222 when an initial acceleration signal is input, Converts the acceleration signal into acceleration information, and provides the acceleration information to the direction analyzer 223.

The direction analyzing unit 223 analyzes the inputted acceleration information, calculates an acceleration vector value for the acceleration as shown in FIG. 6, and provides the calculated acceleration vector to the rotation determining unit 224. The acceleration vector value may include direction and velocity (intensity) information. However, since velocity is not important in the present invention, only the direction will be described in the following description. For example, the direction analyzer 223 calculates a first acceleration vector 601-1 for the first acceleration signal and a second acceleration vector 601-2 for the second acceleration signal, And sequentially provides acceleration vectors (601-n) to the rotation determination unit (224).

Then, when the acceleration vector for the same (substantially similar) direction as the first acceleration vector 601-1 for the first acceleration signal inputted from the direction analyzing unit 223 is detected, the rotation determining unit 224 determines And provides a rotation determination signal to the timer 222 and rotation information generator 225 at the time of rotation determination. As shown in FIG. 6, the rotation determining unit 224 regards that the direction conversion is performed once when detecting the acceleration vector 602 that has been initially measured and the acceleration vector 603 that has been rotated 180 degrees, It may be configured to judge that one rotation has occurred when the direction change occurs twice.

The timer 222 outputs the time when the initial acceleration signal is input and the one rotation time from the acceleration signal input to the rotation determination signal input to the rotation information generator 225.

The rotation information generating unit 225 transmits rotation information including the rotation time information to the cadence terminal 300 through the communication unit 230. [ The rotation information generating unit 225 transmits the rotation information for one rotation to the cadence terminal 210. However, rotation information including rotation information for a specific rotation number (e.g., 10 times) and rotation time information for each rotation is transmitted to the cadence terminal (300). ≪ / RTI > That is, in order to reduce frequent power consumption, the rotation information generation unit 225 may be configured to transmit rotation information in units of a predetermined number of rotations.

The cadence terminal 300 for receiving rotation information from the rotation detecting device 200 includes a communication unit 310, a cadence control unit 320, a storage unit 330, a display unit 340, and an input unit 350.

The communication unit 30 performs data communication with the communication unit 230 of the rotation detecting device 200.

The storage unit 330 includes a cadence database (DB) 332 for storing bicycle riding assistance information according to the cadence, and an exercise information DB 330 for storing the measured exercise information. The cadence DB 332 includes a cadence table that defines the number of front and rear gears according to the difference between the optimum number of revolutions per cadence, the optimum number of revolutions and the actual number of revolutions, , "Store the guidance data for riding help guidance such as" lower the front derailleur to [] "," raise the rear derailleur to [] "," rear derailleur to [] "

The display unit 340 displays the exercise information and the bicycle riding help information under at least one of text and graphics under the control of the cadence controller 320.

The input unit 350 may include at least one of a key input device including at least one button for controlling functions and operations of the bicycle cadence measuring system using the shoe according to the present invention and a touch pad for outputting coordinate data of the touched position .

The cadence control unit 320 receives the rotation information from the rotation detecting device 200 through the communication unit 310, calculates the cadence by analyzing the rotation information, and stores the calculated bicycle riding help information in the storage unit 330, In the cadence DB 332 of the display unit 340 and displays it. When the cadence terminal 300 includes a GPS receiver (not shown), the cadence controller 320 calculates a speed, an average speed, a moving distance, a traveling time, And displays it on the display unit 340. [

The cadence controller 320 includes a rotation information input determination unit 321, a timer 322, a rotation number count unit 323, a motion information measurement unit 325, A generating unit 326, and a help information generating unit 327.

The rotation information input determination unit 321 determines whether rotation information is received from the rotation detection device 200 through the communication unit 310 and outputs a rotation information reception signal upon receipt of the rotation information to the timer 322 and the rotation number count unit 324. [ And outputs the rotation information to the motion information measurement unit 325. [

The timer 322 continuously counts and outputs the time.

The rotation number counting unit 323 counts the number of times the rotation information reception signal is input from the rotation information input determining unit 321, counts the number of rotations of the rider's foot, and provides the counted number to the motion information measuring unit 325.

The motion information measurement unit 325 includes a cadence calculation unit 3251 that measures the cadence based on the number of revolutions counted and inputted from the revolution counting unit 323 and the time information input from the timer 322, Speed, average speed, travel distance, and travel time. As described above, the cadence terminal 300 preferably includes a GPS receiver in order to calculate the traveling speed, the average speed, the traveling distance, and the traveling time. However, the motion information measurement unit 325 may be configured to calculate the cadence using the time information of one rotation included in the rotation information input from the rotation information input determination unit 321, And determine the final cadence as the average of the second cadence calculated by the time information included in the rotation information and the time information included in the rotation information, and weighting the first cadence and the second cadence to determine the cadence As shown in FIG. The weight may be experimentally determined to provide more accurate cadence.

The motion information generation unit 326 constructs the motion information measured by the motion information measurement unit 325 in a predetermined format, stores the motion information in the motion information DB 331, and displays the motion information on the display unit 340.

The help information generating unit 327 receives the cadence directly from the motion information generating unit 326 or the motion information measuring unit 325 and loads the front and rear transmission number information about the current cadence by referring to the cadence DB 332 And combines the loaded rank information and the guidance data to generate riding help information. The generated riding assistance information may be displayed on the display unit 340 and stored in the exercise information DB 331 of the storage unit 330.

FIG. 4 is a flowchart illustrating a method of detecting and providing a rotational speed in a rotation detecting device of a bicycle cadence measuring method using a shoe according to an embodiment of the present invention. FIG. And a method of calculating a cadence in a cadence terminal of a method of measuring a cadence. Will be described with reference to Figs. 4 and 5. Fig.

The control unit 220 of the rotation detecting device 200 monitors whether an acceleration signal is inputted from the acceleration sensor unit 210 (S411).

When an acceleration signal is input from the acceleration sensor unit 210, the controller 220 operates the timer 222 to count the rotation time (S413).

When the counting of the rotation time starts, the controller 220 analyzes the acceleration signal to measure the direction of the acceleration signal (S415). Then, the controller 220 determines whether the direction data corresponding to the direction of the measured acceleration signal among the directions of the previously measured acceleration signals (Step S417).

As a result of the determination, if there is no previous acceleration signal having a direction coinciding with the direction of the measured acceleration signal, the direction data for the acceleration signal is stored (S419) .

The control unit 220 determines that the rotation detecting device 200 makes one rotation (S421). If the direction data matches the direction data of the measured acceleration signal, the controller 220 determines that the rotation detecting device 200 has made one rotation Generates time information (S423) and transmits it to the cadence terminal 300 through the communication unit 230 (S425).

At this time, the cadence controller 320 of the cadence terminal 300 checks whether rotation information is received from the rotation detecting device 200 through the communication unit 310 (S511).

When the first rotation information is received, the cadence controller 320 counts the cadence reference time of the timer 222 (S513).

After counting the timer 322, the cadence controller 320 counts the number of rotation information (rotation number) received through the communication unit 310 (S515).

When the number of revolutions starts counting, the cadence controller 320 calculates a cadence (revolutions per minute) by the counted number of revolutions and the cadence reference time (1 minute) (S517).

When the cadence is calculated, the cadence controller 320 further measures motion information such as speed, distance, etc. through a GPS receiver (S519), and stores motion information including the cadence in the motion information DB 331 ( S521).

The cadence controller 320 refers to the cadence table stored in the cadence DB 332 to generate riding assistance information (S525), and displays the riding assistance information on the display unit 340 (S525).

The cadence controller 320 determines whether rotation information is not received for a predetermined time or longer during the generation of the riding assistance information (S527). If no rotation information is received for a predetermined time, the cadence controller 320 enters a standby mode (S529) And checks whether the rotation information is received through the communication unit 310 (S511). When the rotation information is received within the second predetermined time (S531) of the standby mode, the cadence controller 320 switches to the normal mode and ends when the rotation information is not received until the second predetermined time is exceeded .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be easily understood. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, it is intended to cover various modifications within the scope of the appended claims.

100: shoe 200: rotation detecting device
210: acceleration sensor unit 220:
221: Acceleration signal input determination unit 222: Timer
223: direction analyzing unit 224: rotation determining unit
225: rotation information generating unit 230:
240: battery 250:
260: Power switch unit 300: Cadence terminal
310 communication unit 320 cadence control unit
321: rotation information input determination unit 322: timer
323: rotation number counting unit 325: motion information measuring unit
3251: Cadence calculation unit 3252: Speed calculation unit
326: motion information generating unit 327: help information generating unit
330: Storage unit 331: Cadence DB
332: exercise information DB 340: display
350: input units 601, 502, 603: acceleration vector

Claims (9)

An acceleration detecting device for detecting rotation of the pedal due to rotation of the shoe when the bicycle pedal of the rider is installed on the shoe and wearing the shoe; And
A cadence table for defining the number of front and rear gears according to the difference between the optimum number of revolutions per cadence (index), the difference between the optimum number of revolutions and the actual number of revolutions, and a cadence DB for storing guiding data for riding assistance guidance, Calculates the cadence by the number of revolutions detected from the device, judges the optimum number of gears corresponding to the calculated cadence by referring to the cadence table, combines the determined number of gears with the riding aid information data and provides riding help information And a cadence terminal.
The method according to claim 1,
Wherein the acceleration detecting device comprises:
An acceleration sensor for outputting an acceleration signal including a rotational direction component according to a rotation direction of the shoe;
A communication unit for wirelessly transmitting rotation information according to the rotation detection to the cadence terminal;
The acceleration signal is analyzed to detect rotation direction vectors according to a rotation direction component of the acceleration signal. The rotation direction vectors are used to determine whether or not the rotation direction is one rotation. To the cadence terminal through the control unit.
3. The method of claim 2,
Wherein,
An acceleration signal input determination unit for monitoring whether an acceleration signal is input from the acceleration sensor unit, converting the acceleration signal to acceleration information upon input of an initial acceleration signal, and outputting the acceleration information;
A direction analyzer for analyzing a direction component from the acceleration information and calculating a direction vector;
A rotation determiner for comparing the direction vector output from the direction analyzer with the direction vectors of the previous acceleration signal to determine whether the rotation is one rotation;
And a rotation information generating unit for generating rotation information when the rotation determining unit determines one rotation and transmitting the rotation information to the cadence terminal through the communication unit.
The method of claim 3,
The rotation determining unit may determine,
And comparing the direction of the calculated direction vector with the direction of the previous direction vectors, and if there is a vector whose direction matches the direction of the previous direction vectors, the bicycle cadence measuring system using the shoe.
The method of claim 3,
The rotation determining unit may determine,
And when it is determined that a direction change of 180 degrees occurs twice in the initial direction vector among the previous direction vectors including the calculated direction vector, it is determined to be one rotation.
The method according to claim 1,
The cadence terminal,
The cadence DB;
A communication unit for performing data communication with the rotation detection device by radio and receiving rotation information;
A cadence controller for calculating a cadence by the number of revolutions detected by the acceleration detecting device, determining an optimum number of gears corresponding to the calculated cadence, combining the determined number of gears and the riding aid information data to provide riding assistance information; And
And a display unit for receiving and displaying the riding assistance information.
The method according to claim 6,
The cadence control unit includes:
A timer for counting time;
A rotation information input determining unit that monitors whether rotation information is received from the rotation detecting device through the communication unit and outputs a rotation information reception signal and rotation information upon reception of rotation information;
A rotation number counting unit for receiving the rotation information reception signal and counting and outputting the rotation number;
A motion information measuring unit for calculating a cadence by the rotation number and a cadence reference time counted by the timer; And
And a help information generation unit for determining the optimum number of gears corresponding to the calculated cadence by referring to the cadence table, combining the determined number of gears with the riding aid guidance data, and outputting the riding help information to the display unit A bicycle cadence measuring system using shoes.
The method according to claim 6,
Wherein the acceleration detecting device comprises:
Rotation information including rotation time information about one rotation at the time of rotation detection is transmitted to the cadence terminal,
The cadence control unit includes:
A rotation information input determining unit that monitors whether rotation information is received from the rotation detecting device through the communication unit and outputs a rotation information reception signal and rotation information upon reception of rotation information;
A rotation number counting unit for receiving the rotation information reception signal and counting and outputting the rotation number;
A motion information measurement unit for calculating a cadence by obtaining a rotation number per a reference time of a cadence based on the rotation number and rotation time information included in the rotation information; And
And a help information generation unit for determining the optimum number of gears corresponding to the calculated cadence by referring to the cadence table, combining the determined number of gears with the riding aid guidance data, and outputting the riding help information to the display unit A bicycle cadence measuring system using shoes.
3. The method of claim 2,
Wherein the cadence terminal is a smart phone equipped with an application for receiving rotation information from the acceleration detection device wirelessly, calculating and displaying the cadence, and providing riding assistance information.

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