JP5834288B2 - Bicycle electronic system and program - Google Patents

Description

  The present invention relates to a bicycle electronic system and a program for measuring various information related to bicycle travel.

  Examples of various information related to bicycle travel include travel speed, current position display, average speed, lap measurement to the destination, crank rotation speed (cadence), and heart rate (heart rate) during travel. Further, information specific to a bicycle having a multi-stage transmission mechanism includes gear position information indicating what gear ratio is currently used. 2. Description of the Related Art Conventionally, a cycle computer is provided as a bicycle electronic system that allows a bicycle user to view these various information while traveling. An example of such a cycle computer is shown in Patent Document 1. Further, as a device capable of displaying gear position information, for example, a bicycle speedometer as shown in Patent Document 2 is cited. The speedometer for a bicycle shown in Patent Literature 2 displays the gear position on the display unit when the user inputs gear position information in advance, and thus recognizes what gear position the bicycle user is currently driving. It can be done.

JP-A-2005-324786 JP-A-6-317601

However, in the bicycle speedometer shown in Patent Document 2, data on the number of teeth of the front gear and the rear gear must be input. In other words, in order to install such a bicycle speedometer, the user must know the number of teeth of the front gear and rear gear of each stage of the vehicle, and input the tooth number data for each corresponding front gear and rear gear. There was a hassle to do. Therefore, there has been a need for a bicycle electronic system that can easily output information on gear positions without inputting the number of teeth data.The present invention has been made to solve the above problems, and its purpose is Another object of the present invention is to provide a bicycle electronic system and program capable of easily outputting information on gear positions without inputting tooth number data.

In order to achieve the above object, means 1 is a bicycle electronic system used for a bicycle having a multi-stage transmission mechanism, and relates to a traveling speed calculating means for calculating information related to the traveling speed of the bicycle, and a rotational speed of the crank. Crank rotation speed calculation means for calculating information and data indicating the correlation of the crank rotation speed corresponding to the travel speed (hereinafter referred to as correlation data) over time by actually traveling at the first timing. A function (hereinafter referred to as a travel function) indicating the relationship between the travel speed and the crank rotational speed for each combination of the front gear and the rear gear (hereinafter referred to as gear position) in the multi-stage transmission mechanism based on the acquired correlation data. ) And a travel function calculation means for calculating the current travel time by traveling at a timing later than the first timing. Gear position determination means for determining which gear position the running function and the current crank rotation speed correspond to, and in which gear position the current travel speed and the current crank rotation speed in the gear position determination means and to an output means for outputting information regarding corresponding to a function (hereinafter referred to output information).
With such a configuration, the correlation data indicating the relationship between the traveling speed and the crank rotation speed can be acquired by actually running the bicycle having the multi-stage transmission mechanism at the first timing, and the gear is based on the correlation data. The running function for each position can be acquired. Then, at the subsequent timing, information regarding which gear position the running function corresponds to the current running speed and the current crank rotation speed is output.
Since the correlation data of travel speed and crank rotation speed is specific to each gear position (that is, the combination of front and rear gear chainrings and sprockets), the travel function for each gear position is obtained based on the correlation data, and the actual travel state is The idea is to determine which running function corresponds to the current gear position. As a result, the user simply travels in a certain gear position, for example, the current travel speed and the current crank rotation speed correspond to the travel function of which gear position in relation to the automatically set travel function. The information regarding this will be output. Therefore, it is possible to save the trouble of inputting and setting the number of gear teeth as in the prior art, which is very advantageous in operation.
Here, the traveling speed may be acquired directly or indirectly. Therefore, the travel speed calculation means may calculate the travel speed based on information that allows the travel speed to be calculated instead of the travel speed itself. Therefore, the “information regarding the traveling speed of the bicycle” may be the traveling speed of the bicycle itself, or may be, for example, the rotational speed of a tire (front wheel or rear wheel) that can calculate the traveling speed of the bicycle.
Further, the rotation speed of the crank may be acquired directly or indirectly. That is, the crank rotational speed calculation means may calculate the travel speed based on information (information on the rotational speed of the crank) that can be calculated instead of the crank rotational speed itself.

Here, a “bicycle having a multi-stage transmission mechanism” has, for example, at least one gear of a front gear (chain ring) and a rear gear (sprocket), and a drive transmission member (generally, by operating a bicycle operating means. A bicycle that can change the gears of the chain.
Here, the “travel function” is obtained by actually traveling and acquiring correlation data of the travel speed and the crank rotation speed corresponding to the travel speed over time. This can be obtained, for example, because the traveling speed at a certain gear ratio depends on the crank rotational speed, and the correlation between the traveling speed and the crank rotational speed indicates that there is a correlation between the two for each gear ratio. For example, what is necessary is just to obtain | require as a running function the function that the running speed and crank rotation speed at the time of drive | working with the gear ratio respond | correspond one-to-one. For example, when the travel function is obtained based on the distribution distribution of the correlation data, if the travel function corresponding to a plurality of gear ratios can be discriminated from the correlation data as in the configuration, the front gear and the rear gear corresponding to the gear ratio The combination of the number of steps is not particularly defined (in general, from the direction with a light gear ratio), and may be driven in any combination order.
In the case of “function”, it is generally expressed as a mathematical expression, but since the correspondence between a certain traveling speed and a certain crank rotational speed is a function, it does not necessarily mean only the correlation represented by the mathematical expression. .
Here, for example, a bicycle speedometer is generally used as the “bicycle electronic system”, and can include a navigation device, a heart rate during running (heart rate), a lap function, a calorie calculation mechanism, and the like. Examples of output means include output to the display means, output by voice or the like, and output data by wireless or wired to other devices. It is also possible to separate only the output means from the main body.
In the above, the “display means” includes a display unit on which a moving image and a still image are displayed. For example, a screen of an organic EL display, a liquid crystal display, or a CRT display can be assumed.
Information (output information) relating to which gear position the running function corresponds to the current running speed and the current crank rotation speed may include information output in the following invention.

In section 2, and to include the correlation data of the crank rotational speed corresponding previous SL current travel speed associated with the running function of the gear position as the output information and its running speed.
As a result, the current traveling speed and the crank rotational speed corresponding to the traveling speed are output as information so that it can be understood that there is some relationship between the traveling function of the gear positions.
In the above, “output in association” means, for example, that the running function of the selected gear ratio and the correlation data are graphed and displayed on the display means at the same time, or overlapped for more relevance when simultaneously displayed. A display method of crossing or arranging adjacently in the vicinity is assumed. In addition, it is assumed that a numerical value is displayed instead of being converted into a numerical value. It is also assumed that the voice is displayed.
In section 3, before SL running speed calculating means calculates the traveling distance from the circumference of the detection value and the wheel from the wheel speed detecting means for detecting the rotational speed of the wheel, per unit time running distance obtained wheel and to determine the running speed by dividing the number of revolutions.
This describes more specific means of the traveling speed calculation means. For this purpose, for example, the wheel rotation speed detecting means may be disposed between the wheel of the bicycle and the bicycle member facing the wheel. Travel speed calculation means The travel speed is obtained in a relatively real time by dividing the travel distance by the number of wheel rotations per unit time.
In section 4, before Symbol speed calculation means and to determine the running speed on the basis of the information obtained by the GPS receiver.
As a result, the traveling speed of the host vehicle can be obtained without the wheel rotational speed detection means. The speed measurement by the GPS receiver is generally a method using the Doppler effect of the radio wave received by the receiver from the satellite, or position information indicating how much the receiver is moving per second by measuring the position of the receiver. One of the methods for calculating the speed based on this will be used. Although the wheel rotational speed detection means as described above is not necessary, an error may occur when the constant speed is not maintained. Therefore, it can be used together with the means of claim 2.

In section 5, the time of travel for calculating the travel function before Symbol traveling function calculating means, the user has to the gear position and the clear state by setting the gear position after the running before or traveling.
This is because the user sets the gear position before or after traveling, which front gear and rear gear stage combination state (or did) when the user actually travels at the first timing. This clarifies the correspondence between the running function and the gear position.

In section 6, and outputs a gear position of the currently traveling in connection as a pre-SL output information with current travel speed and the crank rotational speed of the correlation data corresponding to the traveling speed.
As a result, the currently traveling gear position output by the output means can be known from the relationship between the current traveling speed and the crank rotational speed corresponding to the traveling speed. As the output mode of the gear position, a numerical value may be used, and a chart such as a graph showing the relationship with other gear positions at a glance may be displayed.
In unit 7, and outputs a gear position of the currently traveling in conjunction with the current gear ratio as before SL output information.
As a result, a gear ratio corresponding to the currently running gear position is output and understood. The output ratio of the gear ratio may be a numerical value, or a chart such as a graph showing the relationship with other gear ratios at a glance may be displayed.
Here, the “gear ratio” is expressed by, for example, a value obtained by dividing the number of teeth of the front gear by the number of teeth of the rear gear. Since the pedal is fixed to the front gear, the gear ratio can always be considered as the number of rotations of the tire per one rotation of the pedal when the torque of the front gear is acting on the rear gear. For example, a gear ratio of 4.72 means that the wheel rotates 4.72 times with one pedal rotation.
The greater the “gear ratio”, the greater the resistance in travel, and the heavier the pedals when the gear ratio is large. With such a large gear ratio, the speed tends to increase as the crank rotation speed increases. On the other hand, the smaller the “gear ratio” is, the smaller the resistance in running is. With such a small gear ratio, the speed does not tend to increase even if the crank rotation speed is high.
In the present invention, since the relationship between the cadence and the traveling speed is calculated from the traveling function, the traveling distance per one pedal rotation can be calculated. Therefore, the gear ratio can be calculated without knowing the number of gear teeth.

In section 8, the pre-Symbol output unit a display unit, with the same display means to display a predetermined running function biaxial directions intersecting the running speed and the crank rotational speed, current speed and its speed Correlation data of the corresponding crank rotation speed is displayed in association with the running function .
Thus, displaying a predetermined travel function is equivalent to displaying the gear position and gear ratio indirectly. Therefore, by displaying the correlation data of the current traveling speed and the crank rotational speed corresponding to the traveling speed by such means, it becomes an index for determining the traveling plan.
In unit 9, and so as to display a plurality of driving functions simultaneously before Symbol display means.
By displaying multiple driving functions at the same time, you can see which gear position changed from which gear position when operating the gear and moving to another gear position, and the current gear position. This makes it easy to determine the travel plan, such as how the travel state is different at the same crank rotation speed as the other gear positions.

In section 10, the pre-SL output means comprising display means, when the multi-stage transmission mechanism comprises a plurality of front gears, wherein when the display unit is a gear position of the current running state is one of the front gear When a plurality of travel functions shared by the one front gear are displayed as the first display screen and the current travel state is the front gear of the other front gear, the other front A plurality of running functions with common gears are displayed as the second display screen .
Since many traveling functions are displayed on one screen at the same time, it is difficult to see information. Therefore, when a plurality of front gears are provided, a plurality of traveling functions common to the front gears are displayed. In addition, since it is the rear gear that normally converts gears frequently, a plurality of travel functions are displayed on one display screen with reference to a case in which front gears that are not frequently converted are commonly used.

In section 11, the pre-SL output means comprising display means, the gear ratio of the gear position which has acquired the travel function in the display means displays a plurality of, in association with them so as to display the gear position of the currently traveling I did .
As a result, it can be understood which of the plurality of gear ratios corresponds to the currently traveling gear position.
In section 12, the pre-Symbol output unit a display unit, the same display unit and to display the position of the front gear and rear gear constituting the gear position of the currently traveling.
For example, if the front gear is the inner gear and the rear gear is the seventh sprocket, “1 × 7” is displayed. As for the order of the front gear and rear gear, the user needs to associate the actual gear with the setting.

In section 13, the pre-SL output means comprising display means, when the running function candidate corresponding to the gear position currently traveling there are a plurality of said display means running function of the plurality of candidates, the gear position or and to display the current correlation data in association with the gear ratio.
This is because when the gear ratio is very close to multiple gear positions and it is not clear which gear position the current driving state is, the current driving function, gear position or gear ratio The correlation data is displayed in association with each other. As a result, the user can recognize the actual gear ratio or the combination of the actual front gear and rear gear stages as one of the candidates. At this time, the user may select any correct one by the selection means.

In section 14, the current correlation data gearing ratio determining means that over time acquired, so make a notification to that effect when it is determined that deviated with respect to the running function of the corresponding gear ratios I did .
This assumes that the pedal has been defeated and deviated from the already calculated running function. In such a case, the fact is notified. The notification means may be displayed on the display screen with colors, graphics or characters, or by voice.

In section 15, the pre-SL output means comprising display means, wherein the gear ratio determining means detects by the inclination detecting means inclined upward amount with time to acquire the correlation data in the running function at a given gear ratio, and to display the current correlation data on the display means in association with the current climb gradient amount for past inclined upward amount.
Thus, since it is displayed in association with the climbing amount that the climbing in the past with the current gear ratio could or cannot be performed, it is possible to make the user build a travel plan for the tilting. For example, "If this is the case, it should be the same as the current gear ratio" or "I was able to climb at the current gear ratio last time, but this time is difficult" I thought I would go to the place where I could do my best this time, but this would increase my interest in cycling.

In section 16, the pre-SL output means comprising display means comprises a calorie consumption calculating means for calculating calorie consumption based on the travel distance and so as to display the calorie consumption on the display means.
This makes it possible to grasp how many calories are consumed by cycling.
In unit 17, and so that the parameters for calculating the calories as running resistance climbing slope amount detected by the previous SL inclination detecting unit.
Since the calorie consumption increases in the ascending slope, more accurate calorie consumption can be obtained by calculating the calorie consumption as the running resistance for the ascending slope.
In means 18, and to provide a program for implementing the control functions of the electronic system for bicycles to the computer. .

  According to the present invention, the user can easily set information on the gear position without actually inputting the number-of-teeth data by actually traveling on a bicycle in advance.

The front view of the speedometer of embodiment concerning this invention. Explanatory drawing explaining the outline of the state which set the speedometer of the same embodiment to the bicycle. FIG. 3 is a block diagram illustrating an electrical configuration of an embodiment. (A)-(d) is a schematic diagram explaining the acquisition procedure of the sample data for calculating a running function for every gear position. The flowchart at the time of calculating the traveling function for every gear position. (A)-(c) is a schematic diagram of the display screen which displayed the relationship between cadence and traveling speed on the same screen as a traveling function. (A) And (b) is the schematic diagram of the display screen which displayed the gear ratio of all the gear positions by the relationship with the present gear position. The schematic diagram of the display screen which displayed the present gear position simultaneously on the map display screen which displays the present position. The schematic diagram which displays the present gear position of the near gear ratio simultaneously on the display screen which displayed the gear ratio of all the gear positions by the relationship with the present gear position.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the drawings.
FIG. 1 is an external front view of a speedometer 10 that also serves as a cycle computer with a GPS function as an electronic system for bicycles. As shown in FIG. 2, the speedometer 10 has a mechanism housed in a substantially rectangular parallelepiped housing 11 serving as a main body, and is attached to a position on the handle 13 of the bicycle S that is easy for a user to see by a binding band 12. It is like that. A display unit 16 as a display means is exposed in a frame-shaped front frame 15 disposed on the front surface of the housing 11. In the present embodiment, the display unit 16 is composed of a small 3-inch liquid crystal display. The display unit 16 also serves as a touch panel as input means. A power button 17 is formed on the right side as viewed from the front of the housing 11, and a menu button 18 is formed on the left side. A charging notification lamp 20 that notifies the charging status is formed at a position below the display unit 16 in the front frame 15. In the present embodiment, the speedometer 10 uses a battery (secondary battery) made of a lithium ion battery as a power source, and a back cover (not shown) is removed and accommodated in the housing 11. In addition, a memory card reader, which will be described later, is also disposed inside the housing 11, and the back cover is removed so that an SD card as an external storage medium is attached to and detached from the memory card reader.

As shown in FIG. 2, the speedometer 10 is attached to a position on the handle 13 of the bicycle S through a holder (not shown) on the handle 13 of the bicycle S by a binding band 12 as attachment means. The speedometer 10 is provided with a wheel rotation sensor 21 as a wheel rotation number detecting means. The wheel rotation sensor 21 is set as a set with a first magnet 22 as a movement detection body prepared separately. As shown in FIG. 2, the wheel rotation sensor 21 can be attached by, for example, the binding band 12 at a position facing the spoke 26 of the front wheel 25 of the front fork 24 of the bicycle S. The first magnet 22 is attached to a position on a locus intersecting with the wheel rotation sensor 21 by the rotation of the front wheel 25 with respect to any spoke 26 of the front wheel 25. The wheel rotation sensor 21 detects the magnetic lines of force of the first magnet 22 that circulates with the rotation of the front wheel 25 once for each rotation of the front wheel 25.
The speedometer 10 includes a crank rotation sensor 27 as a crank rotation speed calculation unit. The crank rotation sensor 27 is set as a set with a second magnet 23 as a movement detection body prepared separately. As shown in FIG. 2, the crank rotation sensor 27 can be attached to the chain stay 28 of the bicycle S by the binding band 12 at a position facing the pedal 30 on the crank 29 side. The second magnet 23 is attached to the pedal 30. The mounting position of the second magnet 23 is a position that intersects the crank rotation sensor 27 by the rotation of the pedal 30. The crank rotation sensor 27 detects the magnetic field lines of the second magnet 23 that circulates with the rotation of the pedal 30 once for each rotation of the pedal 30.

Next, the electrical configuration inside the housing 11 of the speedometer 10 will be described based on the block diagram of FIG. In addition, about the structure which is not directly related to this invention, it abbreviate | omits.
The position detector 31, the memory card reader 32, the alarm 33, the acceleration sensor 34, and the database are included in the controller MC as the running speed calculating means, the crank rotation speed calculating means, the running function calculating means, the gear ratio determining means, and the calorie consumption calculating means. 35, a sensor signal receiver 36, the display unit 16, the power button 17, the menu button 18 and the like are connected to each other.
The controller MC includes a known CPU, a memory such as a ROM and a RAM, a timer, and the like. In the ROM in the controller MC, the first traveling speed calculation program for obtaining the traveling speed based on the output from the wheel rotation sensor 21 received by the sensor signal receiver 36 is received by the sensor signal receiver 36. A crank rotational speed calculation program for obtaining the rotational speed of the crank converted per minute based on the output from the crank rotational sensor 27, and a plurality of travelings based on the correlation between the rotational speeds of the cranks and the traveling speeds that differ for each gear ratio. Travel function calculation program for obtaining function f (x), cadence and travel speed in the current travel state are calculated, and similar to any travel function f (x) of a plurality of travel functions f (x) already calculated Correlation function program to determine whether the gear position in the past driving history and the gear position in the current driving state Gear display program for a predetermined display on the display unit 16 compares the down, running functions such as storage programs for storing the calculated traveling function f (x) and a gear ratio SD card is stored.
Further, as a program related to the position detector 31, a GPS information processing program for processing GPS information received by the GPS receiver 37 of the position detector 31, and map data is received by the GPS receiver 37 of the calling position detector 31. Map display program to be displayed on the display unit 16 in association with the received position data, the second travel for obtaining the travel speed from the position data received by the GPS receiver 37 of the position detector 31 and the travel distance per unit time Obtained from the speed calculation program, the history storage program for storing the travel history (log data) received by the GPS receiver 37 in the SD card, the position data received by the GPS receiver 37 of the position detector 31 and the GPS receiver 37 Calculate elapsed time and mileage from Calorie consumption calculation program for calculating calculated to, OS (Operation System) and various programs are stored.
Further, the calculated values calculated by the above calculation programs and the position information detected by the position detector 31 are temporarily stored in the RAM.

The position detector 31 as a current position acquisition unit, a speed acquisition unit, and a current time acquisition unit includes a GPS receiver 37 as a known time acquisition unit that acquires GPS information as the core of the configuration. Speed calculation is performed based on the positional information and the movement distance acquired based on the information. The detected position information is the latitude, longitude and altitude of the vehicle. The memory card reader 32 reads data on the SD card or updates data on the SD card.
A notification alarm 33 as a notification means performs a sound notification when the speedometer 10 is set or when a set event starts or ends.
The acceleration sensor 34 as an inclination acquisition means and an inclination / acceleration acquisition means is a three-axis type sensor that detects acceleration and inclination in the respective directions of the three axes (X, Y, Z), and the detected value is always sent to the controller MC. Output. Since the inclination can be considered as an acceleration in the direction of gravity, the acceleration sensor 34 can simultaneously detect the inclination. A tilt sensor may be provided separately from the acceleration sensor 34 for tilt detection.
The database 35 is a nonvolatile memory (for example, EEPROM) in the controller MC or externally attached to the controller MC. In the present embodiment, the database 35 stores object data to be displayed on the display unit 16 in a standby state, master image data, various font data to be displayed on the display unit 16, and the like. These data may be stored in the ROM.
The sensor signal receiver 36 is a receiving chip composed of an integrated element group, and receives detection data transmitted from the sensor signal transmitters 38 and 39 on the wheel rotation sensor 21 and crank rotation sensor 27 side. The sensor signal receiver 36 and the transmitters 38 and 39 use ANT plus (+) for short-range wireless communication as a wireless communication protocol, but other communication protocols such as Bluetooth may be used as a communication protocol.
Further, the controller MC detects a contact state with the display unit 16 at a timing of several milliseconds, and performs processing according to a command by a GUI input.

In the electrical configuration as described above, the controller MC executes the following calculation or determination according to a program.
1) Calculation of travel speed In this embodiment, two travel speed calculation methods are provided. First, the wheel rotation sensor 21 is used. In this case, it is necessary for the user to input the circumference of the bicycle wheel (front wheel 25). Since the detection of the magnetic lines of force of the magnet 23 by the wheel rotation sensor 21 is performed every rotation of the front wheel 25, the travel distance can be calculated by multiplying the count number of the detection signal (= the rotation number of the wheel) and the circumference. The traveling speed can be obtained by dividing the traveling distance by the number of counts per unit time. The acquired traveling speed in this case is set as the first traveling speed.
The other is due to the GPS receiver 37. Since the speedometer 10 includes the GPS receiver 37, it is possible to detect the position of the vehicle at the current time and obtain the speed based on the acquired position information and the travel distance. The acquired traveling speed in this case is set as the second traveling speed.
In the present embodiment, the first traveling speed is used for the calculation of the following traveling function f (x) in consideration of the responsiveness. On the other hand, the second traveling speed is used for calculating the log data and the calorie consumption value.
2) Calculation of crank speed Since the magnetic force lines of the magnet 23 are detected by the crank rotation sensor 27 every rotation of the pedal 30 (= crank 29), the count number of detection signals converted per minute (= rotation of the crank 29) Number) as cadence (unit: rpm).

3) Calculation of travel function f (x) The relationship between cadence and speed is calculated as the travel function f (x) for the gear position set by the user.
More specifically, the controller MC can obtain a certain cadence obtained by actually running at any gear position selected by the user from the gear data (that is, chainring and sprocket) prepared in the ROM. Sample data (correlation data) of the traveling speed is acquired with time, and the cadence of the gear position and the traveling speed are calculated as a linear function of the traveling function f (x) based on the sample data. As an acquisition method, for example, sample data having different traveling conditions is acquired so that the cadence is gradually increased from a state of traveling at a low speed with a small cadence so that the vehicle can travel at a high speed. When the correlation of the sample data acquired in this way is scattered on the two-dimensional plane on the xy axis, the sample data is plotted on “a certain straight line L” that is the travel function f (x) to be obtained and around the straight line L. It will be. The coefficient of the straight line L, that is, the slope is unknown. In this case, as a method for obtaining the coefficient of the straight line L, here, the straight line L is calculated using a least square method in which the distance from the true value on the straight line L is considered as the weight of each sample data. Specifically, the sum of the variance (mean square error) between the true value on the straight line L and each corresponding data is calculated, a certain coefficient is calculated so that the sum is minimum, and the ratio between the cadence and the speed is calculated. An inclination of a certain straight line L (running function f (x)) is obtained. This inclination can be considered as a gear ratio at the gear position.

4) Calculation of gear ratio based on travel function f (x) Since the relationship between cadence and travel speed is calculated from the travel function f (x), the travel distance per one rotation of the pedal can be calculated. The gear ratio can be calculated by dividing the travel distance per pedal rotation by the circumference of the tire. The controller MC calculates a gear ratio for each gear position based on the calculated running function f (x).
5) Collation between the current running state and the running function f (x) The controller MC determines which of the gear positions already calculated as the running function f (x) is the gear position in the current running state. .
As described above, when the relationship between the cadence and the traveling speed is already calculated as the traveling function f (x) at the gear position of the bicycle, a new relationship between the cadence and the traveling speed in the current traveling state is acquired. The correlation with the acquired traveling function f (x) is determined. Then, the gear position of the traveling function f (x) having the largest correlation is determined as the gear position in the current traveling state.

6) Comparison of past log data with gear position and current gear position The controller MC acquires and records log data for the travel route traveled by the user. At that time, the amount of inclination and the gear position at each log data acquisition position are acquired together as data. Then, when the current travel route is a past travel route, the controller MC calls the log data of the latest travel from the past log data of the travel route, and the gear position is the gear position of the current travel state. At the same time, it is displayed on the display unit 16 in real time. In addition, in climbing inclination, whether the gear position in the current traveling state requires a larger torque than the previous gear position (that is, is heavy) or not (that is, is light) is displayed. The magnitude of the required torque is determined by the slope value of the travel function f (x) acquired in 3) above.

7) Calculation of calorie consumption The calorie consumption is calculated based on the travel distance information from the GPS receiver 37 until the user inputs the end of calculation after the start of calculation. This sets the calorie consumption value Bc which first a reference with respect to the running distance, sets the weight S _w of slope at that time the weights 1.0 and. A weight of 1.0 is assumed to be traveling on a flat road. Then, set the weight S _w which is increased or decreased in accordance with the inclination angle by the acceleration sensor 34 for travel route sample data acquired at a predetermined timing. Here, for example, 1ms timing to get the weight S _w in, 1ms giving specific weight S _w with respect to the traveling distance in time to calculate the calorie consumption value Bp, the total consumption of the set section as their integration The calorie value Bt is obtained. At this time, if it is an ascending slope, it becomes running resistance, so the weight _Sw is given to be larger than 1.0 so that the calorie consumption is increased. Conversely, if it is a descending slope, the weight _Sw is given less than 1.0. .

Next, a description will be given of the setting of calculation conditions as a precondition for causing the display unit 16 to display various travel information acquired during travel in the speedometer 10. In particular, a description will be given centering on a method of calculating a running function for displaying on the display unit 16 what cadence, running speed, and state of the gear in real time are.
1) First, a basic calculation condition setting operation for the user and the user's bicycle will be briefly described.
The user accesses from the menu button 18 and displays a setting screen capable of GUI input in a lower hierarchy such as “main menu” → “setting” on the display unit 16 to prompt the user to input a user profile. For example, since the user's age, weight, and height are parameters for calculating the calorie consumption value, these inputs are essential.
Similarly, for the user's bicycle, a setting screen is displayed on the display unit 16, and known initial settings necessary for calculation of the log data acquisition interval, tire circumference, and the like are performed.

2) The controller MC calculates a travel function f (x) for all gear positions of the bicycle in a travel function calculation routine as shown in FIG.
First, in step S1, it is determined whether or not any of the front gears is selected. If it is determined that the front gear has been selected, it is determined in step S2 whether or not the rear gear has been selected. If the front gear is not selected in step S1, it is counted whether or not the time is up in step S3, and until a predetermined time elapses, the process proceeds to step S1 to enter a standby state. finish. If it is determined in step S2 that a rear gear has been selected, a gear position is determined in step S4, and acquisition of sample data associated with the gear position is started in step S5. On the other hand, if the rear gear is not selected in step S2, it is counted in step S6 whether or not the time is up, and the routine proceeds to step S2 until a predetermined time elapses to enter a standby state, and the routine is executed when the predetermined time elapses. Exit once. When the acquisition of the sample data is completed in step S7, the travel function f (x) is calculated in step S8, stored in the SD card, and the routine is temporarily terminated.

A user input operation corresponding to such a routine will be described.
a) In this embodiment, the user is allowed to perform a test run for 5 seconds for all combinations of gears on a flat place to obtain sample data.
Therefore, the controller MC first prompts the user to input a screen 40a capable of GUI input as shown in FIG. 4A on the display unit 16 in a predetermined setting input mode.
b) When the user selects and touches the icon 41 indicating “OK” on the input screen 40a in FIG. 4A, the controller MC displays a front gear GUI input screen 40b as shown in FIG. 4B. The user is prompted to select one of the three front gear (inner gear, center gear, and outer gear) icons 42 on the input screen 40b. The inner gear is set to “1”, the center gear is set to “2”, and the outer gear is set to “3”. The user selects and sets the front gear to be actually traveled from “1” to “3”.
c) When the user selects and touches one front gear icon 42 on the input screen 40b in FIG. 4B, the controller MC displays a rear gear GUI input screen 40c as shown in FIG. 4C. The user counts the number of sprockets from the large-diameter side, selects a sprocket at a position where he / she will actually travel from now on, calls the numerical value by the numerical value setting dialog 43 and sets the sprocket arrangement order as numerical values. When the arrangement order of the sprockets is determined, the determination icon 44 is touched to determine the gear position for the test run.
d) If the setting of the front gear and the rear gear sprocket is completed, and the user sets the inner gear “1” and the rear gear sprocket “3”, for example, the controller MC then displays the screen of FIG. 40d is displayed. Here, the user understands that he / she actually travels at the displayed gear position. Next, when the user selects and touches the “start” icon 45, the controller MC starts acquiring sample data. At the same time, the user always travels while giving torque so that the pedal 30 does not idle. The controller MC starts acquiring sample data after shifting to stable running. When starting and ending, a notification to that effect is given from the notification alarm 33. In addition, the notification lamp icon 46 at the top of the screen 40d serving as notification means performs a blinking operation while acquiring sample data when acquiring sample data. The sample data acquisition time is assumed to be about 5 seconds, for example, but this time can be appropriately changed and set for more accurate sample data acquisition.
e) When the acquisition of the sample data at the gear position is completed, the controller MC displays the input screen 40c of FIG. 4C again. Then, in the same manner as described above, sample data of combinations of rear gears with respect to the front gears are sequentially acquired by user settings and test driving. When the acquisition of sample data for all combinations of rear gears (sprockets) for a certain front gear is completed, the controller MC again displays the input screen 40b of FIG. 4B and newly selects the front gear. The rear gear combination sample data is acquired in the same way for the next front gear according to the user's settings and test driving. The following is repeated. When the sample data acquisition for all the gear position patterns of the bicycle is completed in this way, the user selects and touches the gear position confirmation icon 47 from the input screen 40b in FIG. 4B, and the input content is confirmed. . As a result, a traveling function f (x) associated with all the gear positions of the bicycle is obtained.

Next, an example of a display screen whose display is controlled on the display unit 16 in the speedometer 10 having such a configuration will be described.
For example, the controller MC displays the display screen 49 shown in FIGS. 6A to 6C on the display unit 16 in the cadence-travel speed display mode selected by the user. In this embodiment, the display screen 49 is displayed by selecting a display mode from a number of hierarchized modes by pressing the menu button 18 and further selecting a cadence-traveling speed display mode from them. To do. As a result, the display screen 49 can be displayed on the display unit 16 in place of the map display mode displayed by default.
When the controller MC obtains the cadence and the traveling speed in real time according to the acquisition of the log data at the current gear position, the controller MC obtains the correlation with the already obtained traveling function f (x) and has the highest similarity (that is, The travel function f (x) existing on or near the graph is determined to be that of the current gear position. Then, the travel function f (x) of all gear positions including the same front gear as the front gear (chain ring) to which the travel function f (x) belongs is displayed on the display unit 16, and the current cadence and travel speed are displayed. Display.

  For example, in the display screen 49 of FIG. 6A, the front gear is common to the inner gear (indicated by “1”), and seven types of travel functions f (x) corresponding to the seven sprockets of the rear gear are displayed. A graph is displayed. The reason why only one front gear is used for one screen is that only the rear gear is frequently operated during driving, and if all gear positions are displayed on one screen, the screen becomes complicated and difficult to see. is there. In the graph, the horizontal axis represents cadence and the vertical axis represents speed. In the vicinity of each graph, the character display of the set gear position (for example, “1 × 3” if the front gear is the inner gear “1” and the rear gear sprocket is the third position) is also written. ing. On the display screen 49, current speed information is also displayed as character information. If the front gear is an inner gear unless the pedal 30 is idling, the current gear position is basically displayed corresponding to one of these travel functions f (x).

The cadence and travel speed are displayed in the form of a vertical line (that is, f (x) = cadence value) and the horizontal axis (speed = 0) with the cadence position corresponding to the current speed as a reference. The triangular area 50 is colored and displayed so that it can be easily seen. The current cadence and traveling speed are the upper end corner position of the triangular area 50. For example, in FIG. 6A, since the vertex of the triangular area 50 is on a 1 × 5 running function, it can be understood that the current gear position is 1 × 5 without actually looking at the gear.
In the display of the cadence-travel speed display mode, the controller MC determines whether or not the cadence position is a predetermined shift amount from the determined travel function f (x), and if it is determined that it is within the predetermined shift amount, the pedal 30 The triangular area 50 is displayed in blue as a normal running state in which the vehicle is not idle (state shown in FIG. 6A). On the other hand, if it is determined that it is larger than the predetermined deviation amount, the triangular area 50 is displayed in red, assuming that the pedal 30 is idling (state shown in FIG. 6B). FIG. 6c) shows an example in which the front gear is an outer gear (or a center gear, indicated by “2”).

Further, the controller MC displays a display screen 51 as shown in FIGS. 7A and 7B on the display unit 16 in the gear ratio display mode selected by the user. In this embodiment, the display screen 51 is displayed by selecting a display mode from a number of hierarchized modes by pressing the menu button 18 and further selecting a gear ratio display mode therefrom. As a result, the display screen 51 can be displayed on the display unit 16 in place of the map display mode displayed by default (or in place of the cadence-running speed display mode).
The display screen 51 displays stepped line graphs A to C connecting the gear ratios calculated for the gear positions of the seven sprockets combined with each front gear chainring. In FIG. 7, the graphs A to C express the difference in color by the difference in thickness for the convenience of illustration. Graph A in the figure is when the front gear is an inner gear, graph B is when the front gear is the center gear, and graph C is when the front gear is the outer gear. In the graphs A to C, the horizontal axis represents the order of the sprockets of the rear gear, and the vertical axis represents the gear ratio. In each graph, a sprocket that can be rotated with a smaller torque toward the left side of the horizontal axis is a sprocket that requires a larger torque in order toward the right side. Since the screen is not crowded with such a gear ratio display, all gear positions can be displayed on one screen.
On the display screen 51, the gear position in the current running state is displayed as a bar graph D overlapping with the corresponding gear ratio positions of the gear ratio line graphs A to C. Here, the length of the bar graph D means the magnitude of the gear ratio. For example, if the current gear position is the front gear is the center gear and the rear gear is the fourth sprocket, the bar graph D is displayed so as to reach the gear ratio position of the corresponding fourth height of the corresponding graph B. The As a result, the current gear position can be determined, and it can be used as a judgment material such as what gear ratio position is present, and what gear position is preferably changed when the gradient changes.
The display color of the bar graph D is different for each gear position, and the characters of the current gear position (“2 × 4”, “1 × 1”) are displayed in the bar graph. On the display screen 51, current speed information is also displayed as character information.

In the present embodiment, the controller MC first selects a map display mode from a plurality of display modes in the default state, that is, in a state where the power button 17 is input and the display unit 16 can display a screen. The display screen 53 is displayed on the display unit 16. As described above, it is also possible to display the display screens 49 and 51 by selecting another mode by a user input.
The display screen 53 plots and displays the current position P on the basis of the moving distance information from the GPS receiver 37 together with the map 54. A distance display area 55 for displaying distance and a speed display area 56 for displaying speed information are arranged at the upper position of the map 54. A lap setting icon 57 that is a button icon for setting a lap, an erasing icon 58 that is a button icon for erasing a record of elapsed time and travel distance, an elapsed time and travel distance, etc. A recording setting icon 59, which is a button icon for starting and stopping recording, is provided. A map scale display area 60 for displaying a map scale and a current location address display area 61 for displaying a current location address are arranged below these icons 57 to 59.
A gear position display area 62 for displaying the current gear position is arranged at an upper position of the distance display area 55. In the gear position display area 62, the current gear position is displayed in text. Further, when log data that has traveled the same route in the past is recorded, the gear position of the latest data is also displayed (in the case of a route that passes for the first time, a blank display is displayed).
Also, the current gear position and the log data gear position are compared, and the character display color of the current gear position changes according to the difference in gear position. That is,
a) When the gear ratio of the current gear position is larger than any of the past (that is, a larger torque is required), the challenge mode is indicated in red. The character display color of the most recent gear position is shown in white (different color).
b) If the gear ratio of the current gear position is the same or less than that of the past, it is shown in white. The character display color of the most recent gear position is shown in white (same color).
c) In the case of a route passing for the first time, it is shown in light blue.

By configuring as described above, the following effects are exhibited in the present embodiment.
(1) The user simply travels in correspondence with the gear position of his / her bicycle, calculates a traveling function associated with the gear position of the bicycle, and based on the traveling function, which gear position is currently traveling Since it becomes possible to know whether it is a gear position, the trouble of setting the number of teeth for each gear as in the prior art is eliminated.
(2) Since the gear ratio for each gear position can be calculated by calculating the traveling function, various display modes including not only the gear position but also the gear ratio are possible.
(3) In the cadence-running speed display mode, even when there are a large number of gear positions, a different display screen 47 can be displayed for each front gear when displaying the gear position as a display mode, so there are too many graphs nearby Can be prevented and can be easily viewed by the user.
(4) When the gear position is displayed on the display screen 47 in the cadence-running speed display mode, if the current cadence and running speed are on the running function, it should be skipped if it deviates. Is visible, and the coloring display in the triangular area 50 changes, so that the proper driving becomes a kind of effort target for the user, and the driving pleasure is further increased.
(5) In the gear ratio display mode, the display screen 51 displays the stepped line graphs A to C showing the gear ratio and the bar graph D showing the gear position in the running state in relation to the gear ratio. Even if the gear ratio is not input or the number of teeth for calculating the gear ratio is not input, the current gear position and the gear ratio can be immediately known.
(6) In the map display mode, the current gear position is displayed as information in relation to the past gear position on the display screen 53 together with the map information, so that it is not possible to climb at the past gear position. This time it will be a kind of effort target information for users who want to climb in this gear position, so the pleasure of driving will be further increased.

The present invention may be embodied in the following manner.
-In the above embodiment, the user set the gear position first and then travels to acquire sample data to calculate the travel function. A plurality of travel functions that are acquired and calculated according to the sample data may be calculated first, and then associated (set) with the actual gear position. This is because the traveling function becomes unique when traveling at different gear positions, so the setting of the gear position is substantially the same both before and after.
In the gear ratio display mode, if the gear ratio is very close (for example, 2 × 3 and 3 × 2 gear positions in FIG. 7) and cannot be determined as either, as shown in FIG. You may make it make the bar graph D appear in a position. In this case, the user may select either one by touching on the display unit 16 so that the selected side is the current gear position.
-Since the gear ratio is very close, when there are a plurality of gear position candidates, the above embodiment is displayed in association with a plurality of gear ratios. However, such display is an example, and a plurality of gears are displayed. It is good also as a display linked | related with the position and several drive functions.
In the above embodiment, a screen is prepared for each front gear in the cadence-traveling speed display mode. However, a different gear position of the front gear may be displayed on one screen.
If the wheel rotation sensor 21 is not provided when obtaining the gear ratio, the travel distance acquired by the GPS receiver 37 is used, and the travel distance per one rotation of the pedal is divided by the circumference of the tire. May be calculated.
The gear position may be displayed not only on the display unit 16 but also by voice.
In the above embodiment, the user has changed the display mode by himself in order to set the cadence-traveling speed display mode and the gear ratio display mode. However, the display screen in several display modes is displayed at regular intervals. It is good also as a setting which switches. Further, the display screens 49 and 51 of such a cadence-traveling speed display mode and a gear ratio display mode may be displayed on the display unit 16 as a default display screen.
In the map display mode, the gear ratio may be displayed on the display screen 51 instead of the gear position or together with the gear position.
-The present invention can be freely implemented in a modified form without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 10 ... Speedometer as a bicycle electronic system, 16 ... Display unit constituting display means, MC ... Travel speed calculation means, Crank rotation speed calculation means, Travel function calculation means, Controller as gear position determination means.

Claims (19)

The display means displays a function (hereinafter referred to as a travel function) indicating the relationship between the travel speed and the crank rotation speed in the multi-speed transmission mechanism of the bicycle, with the intersecting two-axis directions as the travel speed and the crank rotation speed, respectively. , Data indicating the correlation between the current travel speed and the crank rotation speed corresponding to the travel speed (hereinafter referred to as “data indicating the correlation between the travel speed and the crank rotation speed corresponding to the travel speed”) The electronic system for bicycles is displayed in association with the travel function . For the display means, a function indicating the relationship between the traveling speed and the crank rotation speed in the bicycle multi-stage transmission mechanism (hereinafter referred to as a traveling function), and a combination of the acquired front gear and rear gear in the bicycle multi-stage transmission mechanism (hereinafter referred to as the traveling function). the gear ratio of the "front gear combination rear gear in a bicycle multi-speed mechanism" gear position) is more displays, it characterized Rukoto is in association with those displaying the gear position of the currently traveling electronic system for bicycles. A function (hereinafter referred to as a travel function) showing a relationship between a traveling speed and a crank rotational speed in a multi-speed transmission mechanism of a bicycle corresponding to a combination of a front gear and a rear gear (hereinafter referred to as a gear position) in the multi-speed transmission mechanism of the currently traveling bicycle. When there are a plurality of candidates, the display means is associated with the travel function, the gear position or the gear ratio of the plurality of candidates, and the crank rotation corresponding to the current travel speed. data showing the correlation between the velocity (hereinafter referred to as correlation data to "speed data indicating a correlation between the crank rotational speed corresponding to the running speed") self you wherein Rukoto display the rolling Electronic system for cars. In a function indicating the relationship between the traveling speed and the crank rotational speed in the multi-speed transmission mechanism of the bicycle at a predetermined gear ratio (hereinafter referred to as a traveling function), the correlation between the traveling speed and the crank rotational speed corresponding to the traveling speed is The data shown below (hereinafter referred to as “data indicating the correlation between the traveling speed and the crank rotational speed corresponding to the traveling speed” as the correlation data) is acquired over time and the amount of climbing inclination is acquired from the tilt detecting means, bicycle electronic system that is characterized in that on the display means the current of the correlation data in association with the current of the climbing tilt with respect to the inclined upward of the past. The bicycle electronic system according to any one of claims 1 to 4 , wherein a plurality of the traveling functions are displayed simultaneously on the display means . A combination of a front gear and a rear gear in a bicycle multi-speed transmission mechanism in a current running state (hereinafter referred to as a combination of a front gear and a rear gear in a bicycle multi-speed transmission mechanism) when the multi-speed transmission mechanism of the bicycle includes a plurality of front gears. When the front gear at a gear position is a certain front gear, a plurality of travel functions common to the one front gear are used as the first display screen for the display means. When the current traveling state is the front gear of another one front gear, the plurality of traveling functions shared by the other one front gear are displayed as a second display screen. bicycle electronic system according to claim 1, characterized in that it has. The electronic system for bicycles according to any one of claims 1 to 6 , wherein calorie consumption based on a travel distance is obtained and calorie consumption is displayed on the display means . The electronic system for bicycles according to claim 7 , wherein the amount of climbing inclination is used as a running resistance and is a parameter for calculating calorie consumption . Data indicating the correlation between the current traveling speed and the crank rotational speed corresponding to the traveling speed acquired over time (hereinafter referred to as "correlation between traveling speed and crank rotational speed corresponding to the traveling speed" Data ”) is a deviation from a function (hereinafter referred to as a travel function) indicating the relationship between the traveling speed and the crank rotational speed of the multi-speed transmission mechanism of the bicycle at the corresponding gear ratio. bicycle electronic system that is characterized in that is a notification to that effect when it is determined that there Data indicating the correlation between the traveling speed and the crank rotational speed corresponding to the traveling speed (hereinafter referred to as correlation data) is the crank rotational speed corresponding to the traveling speed by actually traveling at the first timing. Correlation data over time,
Based on the obtained correlation data, the traveling speed for each combination of the front gear and the rear gear in the multi-speed transmission mechanism of the bicycle (hereinafter, “the combination of the front gear and the rear gear in the multi-speed transmission mechanism of the bicycle” is a gear position); Calculating the travel function with the crank rotation speed ;
The electronic system for bicycles according to any one of claims 1 to 9 . Bicycle electronic of claim 1 0, characterized in Rukoto a crank rotational speed calculation means for calculating a travel velocity calculating means for calculating information related to the traveling speed of the bicycle, the information about the rotational speed of the crank system. When traveling to calculate the travel functions, the user after running before or traveling characterized by being adapted to the gear position and the clear state by setting the gear position according to claim 1 0 or 11. The bicycle electronic system according to any one of 11 above. By traveling at a timing later than the first timing, it is determined which current traveling speed and current crank rotation speed correspond to the traveling function of which gear position, and the current traveling speed and information about whether the current crank rotational speed corresponds to which traveling function of the gear position (hereinafter, the output information to) bicycle electronic according to any one of claims 10 to 12, characterized in also be output from the system. Bicycle electronic system of claim 13, wherein Rukoto with the correlation data of the crank rotational speed corresponding to the running function of the current running speed and the running speed associated the gear position as the output information . According to claim 13 or 14, characterized in also be output from the gear position of the currently traveling in conjunction with the correlation data of the crank rotational speed corresponding to the traveling speed and current speed as the output information Bicycle electronic system. The bicycle electronic system according to any one of claims 13 to 15, wherein the output gear position is output in association with a current gear ratio as the output information . Said output means is a display means, claim 13 to 16, characterized in Rukoto to display the position of the front gear and rear gear constituting the gear position currently traveling in the display means Bicycle electronic system as described in. The travel speed is calculated by calculating the travel distance from the detected value of the rotation speed of the wheel and the circumference of the wheel, and dividing the obtained travel distance by the rotation speed of the wheel per unit time. The electronic system for bicycles according to any one of claims 1 to 17 . The program for making a computer implement | achieve the function of the electronic system for bicycles in any one of Claims 1-17.

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