TW201741196A - System and method of controlling derailleur of bicycle - Google Patents

Abstract

A system and a method of controlling a derailleur device are provided. The system includes at least one sensor and a control apparatus. The at least one sensor is applied to obtain cadence and output power of a rider while riding a bicycle to output a cadence signal and a power signal. The control apparatus determines whether to output a shifting signal to the derailleur device for adjusting a gear ratio according to the cadence signal, the power signal and an athletic strength interval parameter including a cadence interval and a power interval. The athletic strength interval parameter is an initial athletic strength interval parameter calculated from personal information of the rider or selected from the initial athletic strength interval parameter and a plurality of setup athletic strength interval parameters.

Description

Bicycle shift control system and bicycle shift control method

The present invention relates to a control system and control method, and more particularly to a bicycle shift control system and a bicycle shift control method adapted to automatically adjust a gear ratio of a bicycle.

Based on the emphasis on health and leisure life, the number of people involved in cycling is increasing year by year, which has promoted the development of the bicycle market. In general, bicycles are often equipped with a shifting system. The rider can shift the chain to different front and rear sprocket wheels by the shifting system to achieve the purpose of shifting. Specifically, the shifting result is related to the gear ratio of the front and rear sprocket wheels on which the chain is located.

Transmission systems typically include a mechanical or electronic transmission. The rider of the bicycle can adjust the mechanical or electronic transmission to determine the appropriate gear ratio based on the individual's athletic intensity and the purpose of riding. However, in a manually operated shifting system, the rider must judge the current exercise intensity and operate the shifting system with his own feelings. Under the condition of uncertainty of his physical condition, there will be more than a safe area, resulting in a heart failure. The situation of the load happened. On the other hand, frequent hand movements and complex operating interfaces also increase the difficulty of using the shifting system correctly.

Compared with the conscious of the rider, it is more accurate to judge the exercise intensity when riding the bicycle by using the physiological parameters of the rider or the recorded data in the ride. In other words, if the shifting system can be operated with reference to the aforementioned physiological parameters and the aforementioned recorded data, it should be possible to more accurately reflect the needs of the rider and select an appropriate gear ratio. Therefore, how to adjust the shifting system of the bicycle based on physiological parameters and related recorded data, and to provide a system and method for automatically performing shifting control, is still one of the goals of those skilled in the art.

The present invention provides a bicycle shifting control system and a bicycle shifting control method that can interpret different types of physiological parameters and record data, and switch to an appropriate gear ratio according to the automatic control of the shifting device.

Embodiments of the present invention provide a bicycle shifting control system adapted to control a shifting device of a bicycle. The bicycle shifting control system includes at least one sensor and control device. The sensor is used to obtain the pedaling speed and output power of the rider when riding the bicycle, and output the pedal signal and the power signal. The control device is coupled to the sensor, and determines whether to output a shift signal to the shifting device to adjust the gear ratio based on the power signal, the cadence signal, and the motion intensity interval parameter. The aforementioned exercise intensity interval parameter includes a return speed interval and a power interval.

Embodiments of the present invention provide a bicycle shift control method suitable for use in a bicycle shift control system to control a shifting device of a bicycle. The foregoing method includes the following steps. The pedaling speed of the rider when riding the bicycle is obtained to output the pedaling signal. Obtain the output power of the rider when riding the bicycle to output the power signal. Based on the power signal, the cadence signal, and the exercise intensity interval parameter, it is determined whether to output a shift signal to the shifting device to adjust the gear ratio. The aforementioned exercise intensity interval parameter includes a return speed interval and a power interval.

In an embodiment provided by the present invention, the control device first calculates an initial exercise intensity interval parameter according to the rider's personal information, such as body weight, age, and the like, and sets the initial exercise intensity interval parameter as the exercise intensity interval. parameter. However, in another embodiment, the control device further estimates a plurality of set exercise intensity interval parameters based on the initial exercise intensity interval parameter and the input personal information. At this time, the control device or the rider may select the exercise intensity interval parameter from among the initial exercise intensity interval parameters and the plurality of set exercise intensity interval parameters based on the riding purpose.

In an embodiment provided by the present invention, the gear ratio is adjusted, for example, following one or more preset gear ratio paths. In detail, when the control device outputs the shift signal to the shifting device, only the gear ratio is required to be adjusted up or down, and the shifting device moves and adjusts the gear ratio according to the preset gear ratio path in the bicycle shifting control system. In other words, the control device does not need to detect the current value of the gear ratio in advance. However, in another embodiment provided by the present invention, if the bicycle shift control system does not have a preset gear ratio path, the control device needs to detect the current gear ratio value and correspondingly output the shift signal to adjust the bicycle. The ratio of the teeth.

Based on the above, the bicycle shift control system and the bicycle shift control method according to the embodiments of the present invention obtain the pedaling speed and the output power of the rider when riding the bicycle, and compare the pedaling speed with the output power. The exercise intensity interval parameter determines whether the gear ratio of the bicycle is adjusted correspondingly. Thereby, the rider can avoid the trouble of manual shifting when riding the bicycle. On the other hand, the rider can also maintain a stable pedaling speed and output power, thereby achieving good exercise results or training results.

The above described features and advantages of the invention will be apparent from the following description.

1 is a schematic view of a bicycle according to an embodiment of the invention. Referring to Fig. 1, a bicycle 10 includes a frame 100, a front fork 101, a rear upper fork 114, a rear lower fork 115, a plurality of front sprocket wheels 102, a plurality of rear spurs 103, a crank shaft 104, a crank 105, a pedal 106, and a seat. The pad 107, the seat post 108, the hub (i.e., the shaft at the center of the wheel) 109, the handlebar 110, the brake grip 111, and the chain 112. On the other hand, the shifting device 120 of the bicycle 10 is composed of, for example, a shift knob 113, a front derailleur 116, and a rear derailleur 117, but the present invention is not limited thereto.

The main function of the shifting device 120 is to change the gear ratio of the bicycle 10. More specifically, the bicycle 10 having the shifting device 120 is usually also provided with a plurality of front spurs 102 and a plurality of rear spurs 103 having different numbers of teeth. When riding the bicycle 10, the front sprocket 102 and the rear sprocket 103 that are actuated by the chain 122 are changed by the shifting device 120, and the gear ratio of the bicycle 10 can be adjusted, so that the rider can adapt to different terrains and maintain a certain ride. Take the speed, step back speed and output power. In general, the greater the gear ratio of the bicycle 10, the greater the rider's output power needs to be increased, but the speed and distance of the bicycle are also relatively increased. Relatively speaking, the smaller the gear ratio of the bicycle 10, the lower the output power of the rider, but the speed and the moving distance of the bicycle are also relatively reduced. Conventionally, whether it is an electronic shifting device or a mechanical shifting device, the rider switches the gear position by pressing or rotating the shifting handle 113 to adjust the gear ratio of the bicycle 10.

2 is a schematic diagram of a bicycle shifting control system according to an embodiment of the invention. The bicycle shift control system 200a provided by the embodiment of the present invention is applicable to the bicycle 10 structure as shown in FIG. 1, but is not limited thereto. Referring to FIG. 2, the bicycle shift control system 200a automatically controls the shifting device 120 based on the physiological parameters of the rider of the bicycle 10 and the recorded data to adjust the gear ratio of the bicycle 10. In the present embodiment, the bicycle shifting control system 200a includes at least one sensor, a control device 230, and a shifting device 120. In more detail, in the embodiment, the aforementioned sensor includes a cadence sensor 210 and a power sensor 220.

The cadence sensor 210 is adapted to sense the pedaling speed of the rider when riding the bicycle and output the cadence signal. Specifically, the pedaling rotational speed is the number of revolutions in which the rider steps the pedal 106 in a unit time, and the unit thereof may be a revolution per minute (Revolution Per Minute, R.P.M.), but is not limited thereto. In the present embodiment, the cadence sensor 210 is, for example, attached to the crank 105 of the bicycle 10, the pedal 106, the crank shaft 104, and the like, but is not limited thereto.

The power sensor 220 is adapted to sense the output power of the rider when riding the bicycle 10 and output a power signal. The output power is the degree of work of the rider when riding the bicycle 10, and the unit can be watts (W). In other words, the output power is the force applied by the rider to step on the pedal 106. In the present embodiment, the power sensor 210 is, for example, a portion that is attached to the crank 105 of the bicycle 10, the pedal 106, the crank shaft 104, and the like, but is not limited thereto.

It should be noted that in another embodiment of the present invention, the bicycle shift control system 200a may only install the power sensor 220, and the power sensor 220 obtains the output power, and then estimates the rider's pedaling speed. Finally, the cadence signal and the power signal are output. In still another embodiment of the present invention, the cadence sensor 210 and the power sensor 220 may be integrated into a composite sensing device.

The cadence sensor 210, the power sensor 220, and the shifting device 120 are respectively coupled to the control device 230 in a wired or wireless manner. In this embodiment, the control device 230 includes, for example, a micro-controller, an embedded controller, a central processing unit (CPU), and a field-effect programmable logic gate array (Field). A programmable gate array (FPGA), an application-specific integrated circuit (ASIC), or the like, but is not limited thereto.

In the embodiment of the present invention, the control device 230 receives the cadence signal and the power signal, and determines whether to output the shift signal to the shifting device 120 based on the rider's pedaling rotational speed and the output power to adjust the gear ratio. In the present embodiment, the shifting device 120 is, for example, an electronic shifting device, thereby switching the gear position corresponding to the shift signal of the control device 230.

3 is a schematic diagram of a bicycle shifting control system according to another embodiment of the present invention. The bicycle shifting control system 200b shown in Fig. 3 is equally applicable to the bicycle 10 architecture shown in Fig. 1. Referring to FIG. 2 and FIG. 3, the bicycle shift control system 200b according to another embodiment of the present invention further includes a display device 240, a storage device 250, and an input interface 260, as compared to the bicycle shift control system 200a. In the embodiment, the display device 240 is, for example, a liquid crystal display (LCD), a Light-Emitting Diode (LED) display device, or the like having other display functions. The storage device 250 is, for example, a hard disk (Rear Disk), a random access memory (RAM), or the like having a storage function. The input interface 260 is, for example, a button, a keyboard, a mouse, a touch panel, or the like having an input function.

In an embodiment of the invention, the control device 230, the display device 240, the storage device 250, and the input interface 260 are separate devices, but the invention is not limited thereto. In another embodiment, the control device 230, the display device 240, the storage device 250, and the input interface 260 may also be integrated into a single electronic device, such as a personal digital assistant, a smart mobile device, or the like. achieve.

In an embodiment of the present invention, the bicycle shifting control system 200a, 200b can be manually opened by the rider and automatically switches the gear ratio of the bicycle 10 during riding of the bicycle 10. 4 is a flow chart of a bicycle shift control method according to an embodiment of the invention. Specifically, the bicycle shift control method illustrated in FIG. 4 is applied to the bicycle shift control systems 200a and 200b illustrated in FIGS. 2 and 3, but is not limited thereto. The bicycle shift control method illustrated in FIG. 4 will be described in detail below by taking the bicycle shift control system 200b shown in FIG. 3 as an example. Referring to FIG. 3 and FIG. 4, when the rider is riding a bicycle, the rider's pedaling rotational speed is obtained to output a cadence signal (step S410), and the rider's output power is obtained to output a power signal (step S415). ). It should be noted that, in an embodiment of the invention, the pedaling speed and the output power can be obtained by sensing by the cadence sensor 210 and the power sensor 220, respectively. Next, the control device 220 determines whether to output a shift signal to the shifting device 120 based on the power signal, the cadence signal, and the exercise intensity interval parameter to adjust the gear ratio (step S430). The aforementioned exercise intensity interval parameter includes a return speed interval and a power interval.

In detail, in an embodiment of the invention, an initial exercise intensity interval parameter is preset within the bicycle shift control system 200a, 200b. In this embodiment, the initial exercise intensity interval parameter is calculated by the control device 230 based on the rider's personal information, such as the rider's physiological parameters, including the weight, age, physical reference power, etc., but is not limited thereto. . The initial exercise intensity interval parameter includes a return speed interval and a power interval. The rider's personal information can be entered by the rider via the input interface 260, but is not limited thereto. In other embodiments, the rider's personal information may also be obtained via other sensors (not shown) of the bicycle shift control system 200a, 200b, or may be obtained by the control device 230 connecting to other databases. In the present embodiment, the control device 230 sets the initial exercise intensity interval parameter to the aforementioned exercise intensity interval parameter.

In another embodiment of the present invention, the control device 230 further calculates a plurality of set exercise intensity interval parameters based on the initial exercise intensity interval parameter, supplemented by the rider's personal information or even the riding purpose, and the aforementioned set exercise intensity The interval parameters include the return speed interval and the power interval. In this embodiment, the rider can input the selection signal through the input interface 260 before riding the bicycle, and the control device 230 selects the initial exercise intensity interval parameter and the plurality of set exercise strengths according to the selection signal received by the input interface 260. One of the interval parameters is an exercise intensity interval parameter, but the present invention is not limited thereto. In another embodiment of the present invention, the rider may also input a selection signal through other electronic devices connected to the control device 230.

In another embodiment of the present invention, the control device 230 directly obtains a plurality of set exercise intensity interval parameters through the input interface 260, and selects one of the set exercise intensity interval parameters according to the selection signal received by the input interface 260. It is the exercise intensity interval parameter. In detail, in the present embodiment, the rider directly sets a plurality of set exercise intensity interval parameters from the input interface 260 or through other electronic devices connected to the control device 230, so the control device 230 does not need to calculate the initial exercise intensity interval. parameter.

In general, the aforementioned initial exercise intensity interval parameter and set exercise intensity interval parameter are sets of parameters established based on the rider's fitness value and different ride goals and exercise intensity. In this embodiment, each of the initial exercise intensity interval parameter and the set exercise intensity interval parameter includes a return speed interval and a power interval, and the power interval is a different power value range corresponding to different riding purposes and exercise intensity.

FIG. 5A is a list of initial exercise intensity interval parameters and set exercise intensity interval parameters according to an embodiment of the invention. Referring to FIG. 5A, the initial exercise intensity interval parameter and the set exercise intensity interval parameter are, for example, divided into three groups, and each has a different power value range. The power value range is grouped, for example, based on the rider's personal information, physiological information, and the like. For example, the range of power values is, for example, grouped based on the rider's fitness reference power, and the fitness reference power is the rider's corresponding intensity of the lactic acid threshold, such as 180 watts (W) of output power. The control device 230 first calculates the power interval of the initial exercise intensity interval parameter 2 based on the percentage of the aforementioned fitness reference power, and further estimates the power interval for setting the exercise intensity interval parameter 1 and the set exercise intensity interval parameter 3.

In this embodiment, the initial exercise intensity interval parameter and the set exercise intensity interval parameter have different power intervals and represent different exercise intensity and ride purpose. In summary, the setting of the exercise intensity interval parameter 1 represents the riding purpose with the leisure as the target. The initial exercise intensity interval parameter 2 represents a ride target with motion as a target. Setting the exercise intensity interval parameter 3 represents the riding purpose with training as the target. On the other hand, the return speed range is the ideal or expected pedaling speed range of the rider and can be obtained based on the rider's target return speed. For example, when the rider's target return speed is 70 minutes/rev (R.P.M.), the return speed range is plus or minus 10% (percentage) of the target return speed, for example, 63-77 minutes/rev (R.P.M.).

FIG. 5B is a list of initial exercise intensity interval parameters and set exercise intensity interval parameters according to another embodiment of the present invention. Referring to FIG. 5B, the initial exercise intensity interval parameter and the set exercise intensity interval parameter are, for example, divided into 7 groups, and each has a different power value range. The range of power values is, for example, grouped based on the rider's fitness reference power. In detail, the fitness reference power is the exercise intensity of the rider corresponding to the lactic acid threshold, for example, an output power of 180 watts (W). The control device 230 first calculates the power interval of the initial exercise intensity interval parameter 4 based on the percentage of the aforementioned fitness reference power, and further estimates the power interval for setting the exercise intensity interval parameters 1~3 and 5-7.

Specifically, each initial exercise intensity interval parameter has a different power interval than the set exercise intensity interval parameter and represents different exercise intensity and ride purpose. In summary, setting the power interval of the exercise intensity interval parameter 1 represents the exercise intensity at which the rider can resume physical fitness. The power interval of the exercise intensity interval parameter 2 is set to correspond to the exercise intensity of the aerobic endurance training. The power interval of the exercise intensity interval parameter 3 is set to correspond to the exercise intensity of the steady motion. The power interval of the initial exercise intensity interval parameter 4 is the exercise intensity corresponding to the lactic acid threshold. The power interval of the exercise intensity interval parameter 5 is set to test the exercise intensity of the oxygen-absorbing ability. The power interval of the exercise intensity interval parameter 6 is set to correspond to the exercise intensity of the anaerobic training. The power interval for setting the exercise intensity interval parameter 7 is the exercise intensity of the training explosive force.

On the other hand, the return speed range is the ideal or expected pedaling speed range of the rider and can be obtained based on the rider's target return speed. For example, when the rider's target return speed is 70 minutes/rev (R.P.M.), the return speed range is plus or minus 10% (percentage) of the target return speed, for example, 63-77 minutes/rev (R.P.M.).

In an embodiment of the present invention, the rider inputs the personal information or physiological information of the rider in advance, for example, in the bicycle shift control system 200b or 200a, and the control device 230 calculates the physical energy based on the input personal information or physiological information. The reference power, the target pedaling speed, and the return speed interval and power interval of the initial motion intensity interval parameter. In an embodiment of the present invention, the rider directly inputs the physical energy reference power and the target pedaling rotational speed, and the control device 230 calculates the initial exercise intensity interval parameter based on the input physical energy reference power and the target pedaling rotational speed. The return speed range and power interval. After obtaining the initial exercise intensity interval parameter, the control device 230 further calculates a plurality of sets of set exercise intensity interval parameters.

However, in another embodiment of the present invention, the rider directly inputs a plurality of sets of the rotational speed interval and the power interval of the set exercise intensity interval parameter in advance in the bicycle shift control system 200b or 200a without the control device 230. Calculation. For the multiple sets of the set motion intensity interval parameters in this embodiment, reference may be made to the list of FIG. 5A and FIG. 5B, and details are not described herein again.

It should be noted that the rider inputs the personal information, the physiological information, the physical reference power, the target pedaling speed, or the set motion intensity interval parameter through the input interface 260 or other electronic device connected to the control device 230, for example. The speed interval and the power interval, and the return speed interval and the power interval of the physical reference power, the target pedaling speed or the set motion intensity interval parameter are recorded in the control device 230 or the storage device 250, for example, in the form of a lookup table.

Referring back to FIG. 4, the rider selects one of the initial exercise intensity interval parameter and the set exercise intensity interval parameter as the exercise intensity interval parameter, for example, based on the desired exercise intensity and riding purpose, and in step S430, The control device 230 determines, by the cadence signal and the power signal, whether the pedaling speed and the output power of the rider when riding the bicycle 10 are respectively maintained in the return speed interval and the power interval of the selected exercise intensity interval parameter to determine whether to output the shift. Signal to the gear unit.

FIG. 6 is a schematic diagram of determining the adjustment of the gear ratio according to an embodiment of the invention. Referring to FIG. 6, when the rider's pedaling speed and output power are respectively maintained in the return speed section and the power section of the exercise intensity section parameter, the control device 230 does not output the shift signal. In other words, the control device 230 does not adjust the gear ratio of the bicycle.

In the present embodiment, when the rider's pedaling rotational speed is higher than the return rotational speed interval, the control device 230 outputs a shift signal to the shifting device 120 to increase the gear ratio. On the other hand, when the rider's pedaling rotational speed is lower than the return rotational speed interval, the control device 230 outputs a shift signal to the shifting device 120 to lower the gear ratio. On the other hand, when the rider's pedaling rotational speed is maintained in the return rotational speed range and the rider's output power is higher than the power interval, the control device 230 outputs a shift signal to the shifting device 120 to lower the gear ratio. When the rider's pedaling rotational speed is maintained in the return speed range and the rider's output power is lower than the power interval, the control device 230 outputs a shift signal to the shifting device 120 to increase the gear ratio.

Specifically, when the rider's pedaling speed is higher than the return speed range or the output power is lower than the power range, the rider does not reach the preset exercise intensity or the ride purpose. At this time, the control device 230 outputs a shift signal to increase the gear ratio of the bicycle 10. Relatively speaking, when the rider's pedaling speed is lower than the return speed range or the output power is higher than the power range, it means that the rider exceeds the preset exercise intensity or the riding purpose. At this time, the control device 230 outputs a shift signal to reduce the gear ratio of the bicycle 10.

Referring to FIG. 6, it is worth noting that in the present embodiment, when the rider's pedaling rotational speed is higher than the return rotational speed interval and the output power is also higher than the power interval, the control device 230 preferentially based on the pedaling rotational speed and the rotational speed. The result of the comparison between the sections outputs a shift signal to the shifting device 120 to increase the gear ratio of the bicycle 10. Similarly, when the rider's pedaling rotational speed is lower than the return rotational speed interval and the output power is also lower than the power interval, the control device 230 preferentially outputs the shift signal to the comparison result between the pedaling rotational speed and the return rotational speed interval to The shifting device 120 reduces the gear ratio of the bicycle 10.

Referring back to FIG. 4, when the control device 230 determines to adjust the gear ratio of the bicycle 10, the control device 230 outputs a shift signal (step S440). In an embodiment provided by the present invention, the gear ratio is adjusted, for example, following one or more preset gear ratio paths. In detail, when the control device 230 outputs the shift signal to the shifting device 120, only the gear ratio is required to be adjusted up or down, and the shifting device 120 moves according to the preset gear ratio path in the bicycle shifting control system 200a, 200b. Adjust the gear ratio. In other words, the control device 230 does not need to detect the current value of the gear ratio in advance. However, in another embodiment provided by the present invention, if the bicycle shift control system 200a, 200b does not have a preset gear ratio path, the control device 230 needs to detect the current gear ratio value and correspondingly output the shift. Signal to adjust the gear ratio of the bicycle 10.

In the present embodiment, regardless of whether or not the shift signal is output, the bicycle shift control method returns to step S410 and step S415 to continuously receive the cadence signal and the power signal and decide whether to adjust the gear ratio of the bicycle 10. When the rider stops riding the bicycle 10, the bicycle shift control method is ended. The bicycle shift control system 200b or 200a stops the execution of the bicycle shift control method based on, for example, the rider's operation, but the present invention is not limited thereto.

FIG. 7 is a flow chart of a bicycle shift control method according to another embodiment of the present invention. In the embodiment, the sensor of the bicycle shift control system 200b or 200a further includes a slope sensor (not shown). The slope sensor is, for example, disposed at a portion of the bicycle frame 100, the front fork 101, the rear upper fork 114, the rear lower fork 115, or the handlebar 110, and is coupled to the control device 230 in a wired or wireless manner. The slope sensor is used to sense the slope of the location of the bicycle 10 to output a slope signal.

Referring to FIG. 7, in comparison with the bicycle shift control method shown in FIG. 4, in the present embodiment, when the rider rides the bicycle 10, the slope sensor senses the slope of the bicycle 10 to output a slope signal (step S412). Control device 230 receives the power signal, the cadence signal, and the slope signal. Next, the control device 230 adjusts the corresponding return rotational speed section based on the gradient signal with respect to the exercise intensity section parameter (step S423).

In general, when riding a bicycle 10 on an uphill road, the rider's pedaling speed will decrease as the slope increases, and the rider's output will follow As the slope increases, it rises. On the other hand, when riding a bicycle 10 on a downhill road, the rider's pedaling speed will increase as the slope increases, and the rider's output will follow The slope increases and decreases.

Therefore, the control device 230 judges from the slope of the location of the bicycle 10 that the bicycle 10 is in a flat road section, an uphill road section or a downhill road section, and judges the slope of the location. Next, the control device 230 adjusts the return rotational speed interval corresponding to the exercise intensity interval parameter according to the determination result. For example, when the control device 230 determines that the bicycle 10 is located on an uphill road section, the control device 230, for example, lowers the return speed range corresponding to the exercise intensity interval parameter, so that the adjusted return speed interval is numerically lower than the unadjusted Return to the speed range. In contrast, when the control device 230 determines that the bicycle 10 is located on a downhill section, the control device 230 adjusts, for example, the range of the rotational speed corresponding to the exercise intensity interval parameter. It should be noted that the greater the slope, the corresponding increase and decrease of the return speed range is correspondingly increased. When the control device 230 determines that the bicycle 10 is in the flat road section, the original return speed interval is used as the return speed interval corresponding to the adjusted exercise intensity interval parameter. In other words, it is maintained in the original return speed range.

Referring back to FIG. 7, the control device 230 determines whether to output the shift signal to the shifting device 120 based on the power signal, the cadence signal, and the adjusted exercise intensity interval parameter (step S430a). For other steps in FIG. 7, please refer to FIG. 4 and related descriptions, and details are not described herein again.

FIG. 8 is a flow chart of a bicycle shift control method according to still another embodiment of the present invention. In the embodiment, the sensor of the bicycle shift control system 200b or 200a further includes a heartbeat sensor (not shown). The heartbeat sensor is, for example, disposed at a portion of the rider's chest or wrist, and is coupled to the control device 230 in a wired or wireless manner. The heartbeat sensor is used to sense the heart rate of the rider when riding the bicycle 10 to output a heartbeat signal.

Specifically, in the embodiment, the initial exercise intensity interval parameter and the set exercise intensity interval parameter respectively include different heartbeat intervals. The control device 230 further receives the heartbeat signal output by the heartbeat sensor, and determines whether the rider's heart rate corresponds to the heartbeat interval of the exercise intensity interval parameter. If the control device 230 determines that the heart rate of the rider does not meet the heartbeat interval of the exercise intensity interval parameter, then one of the plurality of sets of the initial exercise intensity interval parameter and the set exercise intensity interval parameter is selected as the exercise intensity interval parameter.

In an embodiment of the present invention, the rider inputs personal information or a reference heart rate, for example, in advance in the bicycle shift control system 200b or 200a, and the control device 230 calculates the initial exercise intensity based on the input personal information or the reference heart rate. The heartbeat interval of the interval parameter. In general, by the rider's personal information, the control device 230 can infer the reference heart rate and calculate the heartbeat interval of the initial exercise intensity interval parameter accordingly. In another embodiment, after obtaining the heartbeat interval of the initial exercise intensity interval parameter, the control device 230 further calculates a heartbeat interval of the plurality of set exercise intensity interval parameters based on the initial exercise intensity interval parameter, supplemented by the personal information or the reference heart rate. . FIG. 9 is a list of initial exercise intensity interval parameters and set exercise intensity interval parameters according to still another embodiment of the present invention. Referring to FIG. 9, the reference heart rate is, for example, the highest heart rate that the rider can achieve when performing explosive training, and each heartbeat interval is a percentage interval of the reference heart rate, but the present invention is not limited thereto. However, in another embodiment of the present invention, the rider directly inputs a plurality of heartbeat intervals of the set exercise intensity interval parameters, for example, in advance in the bicycle shift control system 200b or 200a, without calculation by the control device 230.

It is worth noting that the rider inputs the personal information, the reference heart rate or the heartbeat interval, for example, through the input interface 260 or other electronic device connected to the control device 230, and the heartbeat interval and the power interval, the return speed interval, etc. It is recorded in the control device 230 or the storage device 250 in the form of a lookup table.

Referring to FIG. 8, in comparison with the bicycle shift control method shown in FIG. 4, in the present embodiment, when the rider rides the bicycle 10, the heartbeat sensor senses the heartbeat of the rider when riding the bicycle 10. Rate to output a heartbeat signal (step S413). The control device 230 receives the power signal, the cadence signal and the heartbeat signal. Then, when the rider's heart rate does not meet the heartbeat interval of the exercise intensity interval parameter, the control device 230 reselects the exercise intensity interval parameter from the initial exercise intensity interval parameter and the set exercise intensity interval parameter (step S426), and is based on the power signal. The cadence signal and the selected exercise intensity interval parameter determine whether to output a shift signal to the shifting device 120 to adjust the gear ratio (step S430).

FIG. 10 is a schematic diagram of reselecting an exercise intensity interval parameter according to a heart rate according to an embodiment of the invention. Referring to FIG. 10, each of the initial exercise intensity interval parameters and the set exercise intensity interval parameters have different power intervals and heartbeat intervals. After the motion intensity interval parameter is selected, if the control device 230 determines that the rider's heart rate is not within the range of the heartbeat interval of the exercise intensity interval parameter based on the heartbeat signal, the control device 230 re-sets the plurality of initial exercise intensity interval parameters and settings. One of the exercise intensity interval parameters is selected as the exercise intensity interval parameter. As shown in FIG. 10, when the rider's heart rate is much higher than the originally selected heartbeat interval, in order to enable the rider to properly relax to lower the higher heart rate, the control device 230 selects a lower heartbeat interval. The initial exercise intensity interval parameter or the set exercise intensity interval parameter is used as the exercise intensity interval parameter. Thereafter, based on the higher output power of the rider, the control device 230 further outputs a shift signal to the shifting device 120 to reduce the gear ratio.

For other steps in FIG. 8, please refer to FIG. 4 and related descriptions, and details are not described herein again.

11 is a flow chart of a bicycle shift control method according to still another embodiment of the present invention. Referring to Fig. 11, in comparison with the bicycle shift control method shown in Fig. 4, in the present embodiment, control device 230 determines whether the output power of the rider is lower than the power threshold based on the power signal (step S429). The power threshold is used to determine if the rider is still in the state of pedaling the pedal 106. In more detail, when the rider does not step on the pedal 106 but uses the bicycle 10 to taxi, the bicycle shift control system 200b or 200a should preferably be maintained at the current gear ratio. Therefore, the control device 230 determines whether the rider's output power has a lower than a minimum power threshold to confirm whether the rider is using the bicycle 10 for taxiing. When the rider's output power is lower than the power threshold, the control device 230 does not adjust the gear ratio of the bicycle, and the bicycle shift control method returns to step S410 and step S415. In other words, the control device 230 does not output a shift signal. In contrast, when the rider's output power is greater than or equal to the power threshold, the control device 230 further determines whether to output the shift signal to the shifting device 120 based on the power signal, the cadence signal, and the exercise intensity interval parameter to adjust the gear ratio ( Step S430). For other steps in FIG. 11, please refer to FIG. 4 and related descriptions, and details are not described herein again.

In an embodiment of the present invention, the display device 240 of the bicycle shift control system 200b further displays at least the current gear position of the shifting device 120, so that the rider can visually determine the current gear ratio of the bicycle 10.

In an embodiment of the present invention, the rider can also manually turn off the bicycle shifting control system 200a or 200b to prevent the bicycle shifting control system 200a or 200b from automatically switching the gear ratio of the bicycle 10, instead of being passed by the rider. The shift knob 113 manually changes the gear position of the shifting device 120 to adjust the gear ratio of the bicycle 10.

In summary, the bicycle shift control system and the bicycle shift control method provided by the embodiments of the present invention sense the pedaling speed and output power of the rider when riding the bicycle, and the aforementioned stepping speed and output power. It is determined whether the gear ratio of the bicycle is adjusted correspondingly compared to the exercise intensity interval parameter. Thereby, the rider can avoid the trouble of manual shifting when riding the bicycle. On the other hand, the rider can also maintain a stable pedaling speed and output power, thereby achieving good exercise results or training results.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧Bicycle
100‧‧‧ frame
101‧‧‧ front fork
114‧‧‧Back fork
115‧‧‧ rear fork
102‧‧‧ front sprocket
103‧‧‧ rear chainring
104‧‧‧ crank shaft
105‧‧‧ crank
106‧‧‧ pedal
107‧‧‧Cushion
108‧‧‧ seatpost
109‧‧‧Flower hub
110‧‧‧Car handles
111‧‧‧Brake grip
112‧‧‧Chain
113‧‧ ‧shift handle
116‧‧‧Front transmission
117‧‧‧ Rear derailleur
200a, 200b‧‧‧ bicycle shift control system
120‧‧‧Transmission
210‧‧‧ cadence sensor
220‧‧‧Power Sensor
230‧‧‧Control device
240‧‧‧ display device
250‧‧‧Storage device
260‧‧‧ input interface
Steps of S410, S412, S413, S415, S423, S426, S429, S430, S430a, S440‧‧‧ bicycle shift control method

1 is a schematic view of a bicycle according to an embodiment of the invention. 2 is a schematic diagram of a bicycle shifting control system according to an embodiment of the invention. 3 is a schematic diagram of a bicycle shifting control system according to another embodiment of the present invention. 4 is a flow chart of a bicycle shift control method according to an embodiment of the invention. FIG. 5A is a list of initial exercise intensity interval parameters and set exercise intensity interval parameters according to an embodiment of the invention. FIG. 5B is a list of initial exercise intensity interval parameters and set exercise intensity interval parameters according to another embodiment of the present invention. FIG. 6 is a schematic diagram of determining the adjustment of the gear ratio according to an embodiment of the invention. FIG. 7 is a flow chart of a bicycle shift control method according to another embodiment of the present invention. FIG. 8 is a flow chart of a bicycle shift control method according to still another embodiment of the present invention. FIG. 9 is a list of initial exercise intensity interval parameters and set exercise intensity interval parameters according to still another embodiment of the present invention. FIG. 10 is a schematic diagram of reselecting an exercise intensity interval parameter according to a heart rate according to an embodiment of the invention. 11 is a flow chart of a bicycle shift control method according to still another embodiment of the present invention.

200a‧‧‧Bicycle shift control system

120‧‧‧Transmission

210‧‧‧ cadence sensor

220‧‧‧Power Sensor

230‧‧‧Control device

Claims (24)

A bicycle shifting control system adapted to control a shifting device of a bicycle, the bicycle shifting control system comprising: at least one sensor for obtaining a pedaling speed and an output power of a rider when riding the bicycle And outputting a stepping signal and a power signal; and a control device coupled to the at least one sensor, the control device determining whether to output a change based on the power signal, the cadence signal, and an exercise intensity interval parameter The signal signal is sent to the shifting device to adjust a gear ratio, and the motion intensity interval parameter includes a return speed interval and a power interval. The bicycle shifting control system according to claim 1, wherein the control device determines, by the cadence signal and the power signal, whether the rider's pedaling speed and the output power are respectively maintained in the exercise intensity interval. The return speed interval of the parameter and the power interval determine whether to output the shift signal to the shifting device. The bicycle shifting control system of claim 2, wherein the control device outputs the shift signal to the rider when the pedaling speed of the rider is higher than the speed range of the exercise intensity interval parameter The shifting device increases the gear ratio; when the rider's pedaling rotational speed is lower than the return speed range of the exercise intensity interval parameter, the control device outputs the shift signal to the shifting device to reduce the gear ratio. The bicycle shifting control system of claim 2, wherein the rideback speed of the rider is maintained in the return speed range of the exercise intensity interval parameter, and the rider's output power is higher than In the power interval of the exercise intensity interval parameter, the control device outputs the shift signal to the shifting device to reduce the gear ratio; and when the rider's pedaling rotational speed is maintained at the rotational speed parameter And when the output power of the rider is lower than the power interval of the exercise intensity interval parameter, the control device outputs the shift signal to the shifting device to increase the gear ratio. The bicycle shifting control system of claim 1, further comprising: an input interface coupled to the control device, wherein the control device obtains the rider's personal information through the input interface, and is based on The input personal information calculates an initial exercise intensity interval parameter and the return rotational speed interval of the initial exercise intensity interval parameter and the power interval. The bicycle shifting control system according to claim 5, wherein the control device sets the initial exercise intensity interval parameter to the exercise intensity interval parameter. The bicycle shifting control system according to claim 5, wherein the control device calculates a plurality of set exercise intensity interval parameters and the set exercise intensity interval parameters based on the initial exercise intensity interval parameter and the input personal information. The return speed interval and the power intervals, the control device selects one of the initial exercise intensity interval parameters and the set exercise intensity interval parameters as the exercise intensity interval according to a selection signal received by the input interface. parameter. The bicycle shifting control system of claim 7, further comprising: a heartbeat sensor coupled to the control device, the heartbeat sensor sensing one of the rider when riding the bicycle a heartbeat rate, and outputting a heartbeat signal, wherein the control device receives a reference heart rate by the input interface, and calculates the initial exercise intensity interval parameter and the plurality of heartbeat intervals of the set exercise intensity interval parameters based on the reference heart rate When the heart rate of the rider does not meet the heartbeat interval of the exercise intensity interval parameter, the control device selects one of the initial exercise intensity interval parameters and the set exercise intensity interval parameters as the exercise intensity. Interval parameters. The bicycle shifting control system of claim 1, further comprising: an input interface coupled to the control device, wherein the control device further receives a plurality of set exercise intensity interval parameters by the input interface, and The selection signal received by the input interface selects one of the set motion intensity interval parameters as the exercise intensity interval parameter. The bicycle shifting control system of claim 1, further comprising: a slope sensor coupled to the control device, the slope sensor sensing a slope of the bicycle location, and outputting a slope signal For the exercise intensity interval parameter, the control device further adjusts the corresponding rotational speed interval based on the gradient signal, and the control device determines whether to output based on the power signal, the cadence signal, and the adjusted motion intensity interval parameter. The shift signal is to the shifting device. The bicycle shifting control system of claim 1, further comprising: a display device coupled to the control device, the display device displaying at least a current gear position of the shifting device. The bicycle shifting control system according to claim 1, wherein the control device does not output the shift signal when the control device determines that the output power is lower than a power threshold based on the power signal. A bicycle shift control method is applicable to a bicycle shift control system for controlling a shifting device of a bicycle. The method includes: obtaining a pedaling speed of a rider when riding the bicycle to output a pedal signal; An output power of the rider when riding the bicycle to output a power signal; and determining whether to output a shift signal to the shifting device to adjust a number of teeth based on the power signal, the cadence signal, and an exercise intensity interval parameter The exercise intensity interval parameter includes a speed range and a power interval. The method of claim 13, wherein the step of determining whether to output the shift signal based on the power signal, the cadence signal, and the motion intensity interval parameter further comprises: the cadence signal and the power The signal determines whether the pedaling speed of the rider and the output power are respectively maintained in the return speed section of the exercise intensity section parameter and the power section to determine whether to output the shift signal to the shifting device. The method of claim 14, wherein the step of determining whether to output the shift signal based on the power signal, the cadence signal, and the motion intensity interval parameter further comprises: when the rider is stepping on the step When the return speed is higher than the return speed range of the exercise intensity interval parameter, the shift signal is outputted to the shifting device to increase the gear ratio; and when the rider's pedaling speed is lower than the exercise intensity interval parameter In the return speed range, the shift signal is output to the shifting device to reduce the gear ratio. The method of claim 14, wherein the step of determining whether to output the shift signal based on the power signal, the cadence signal, and the motion intensity interval parameter further comprises: when the rider is stepping on the step The return speed is maintained in the return speed range of the exercise intensity interval parameter, and when the output power of the rider is higher than the power interval of the exercise intensity interval parameter, the shift signal is output to the shifting device to reduce the number of teeth And when the rider's pedaling rotational speed is maintained in the return speed range of the exercise intensity interval parameter, and the rider's output power is lower than the power interval of the exercise intensity interval parameter, outputting the Shift signal to the shifting device to increase the gear ratio. The method of claim 13, comprising: obtaining a person information of the rider; and calculating an initial exercise intensity interval parameter and the return speed interval of the initial exercise intensity interval parameter based on the input personal information; This power interval. The method of claim 17, further comprising: setting the initial exercise intensity interval parameter to the exercise intensity interval parameter. The method of claim 17, further comprising: calculating a plurality of set motion intensity interval parameters and the plurality of set motion intensity interval parameters based on the initial exercise intensity interval parameter and the input personal information The speed interval and the power intervals; and selecting one of the initial motion intensity interval parameters and the set motion intensity interval parameters as the exercise intensity interval parameter according to the received selection signal. The method of claim 19, comprising: obtaining a reference heart rate; calculating the initial exercise intensity interval parameter and the plurality of heartbeat intervals of the set exercise intensity interval parameters based on the reference heart rate; and sensing the The rider takes a heartbeat rate when riding the bicycle to output a heartbeat signal, and determines whether to output the shift signal based on the power signal, the cadence signal, and the exercise intensity interval parameter, and further includes: When the heart rate of the rider does not meet the heartbeat interval of the exercise intensity interval parameter, one of the initial exercise intensity interval parameters and the set exercise intensity interval parameters is selected as the exercise intensity interval parameter. The method of claim 13, comprising: receiving a plurality of set exercise intensity interval parameters; and selecting one of the set exercise intensity interval parameters as the exercise intensity interval parameter according to the received selection signal . The method of claim 13, comprising: sensing a slope of the bicycle location to output a slope signal, and determining whether to output the replacement based on the power signal, the cadence signal, and the motion intensity interval parameter. The step of the signal signal further includes: adjusting the corresponding speed range according to the slope signal for the motion intensity interval parameter; and determining whether to output the power signal, the cadence signal, and the adjusted motion intensity interval parameter Shift signal to the shifting device. The method of claim 13, comprising: displaying a current gear position of the shifting device. The method of claim 13, wherein the step of determining whether to output the shift signal based on the power signal, the cadence signal, and the motion intensity interval parameter further comprises: determining, based on the power signal When the output power is lower than a power threshold, the shift signal is not output.