TWI626189B - Power sensing system for bicycles - Google Patents

Abstract

A power sensing system for a bicycle includes a power sensing device and an electronic carrier, wherein the power sensing device includes at least one inertial sensing module, a processing module, and a transmission module. The inertial sensing module can transmit the digital signal change data measured by the power sensing device disposed inside the frame of the bicycle or on the surface of the bicycle to the processing module, and the processing module can calculate by itself The data is transmitted to the electronic vehicle through the transmission module for calculation to calculate the pedaling frequency and the pedaling force during riding, and display and provide instant riding information on the electronic vehicle.

Description

Power sensing system for bicycles

The present invention relates to a power sensing system for a bicycle, and more particularly to an instant riding information that can be applied to the interior of a frame or a frame surface of a bicycle of any form and capable of analyzing the riding process. And can display the power sensing system on an electronic vehicle.

Sensors used in the market to measure pedaling force and pedaling efficiency are mostly placed on the main structure of the bicycle frame, such as pedals, five-way, large discs, hubs or cranks, and are sensed by strain gauges or piezoelectric materials. The device directly measures the pedaling force or indirectly derives the pedaling force from the torque sensor. Because the current sensor process is not very convenient, it is also difficult to install the program, and most of the models are not universal, and the sensing The range of voltage output values is not easy to control.

However, from the point of view of mechanical operation, it is most desirable and most efficient if the crank can apply even force 360 degrees. But don't forget, we are human beings, not machines. The muscles of our legs are very familiar with the steps of stepping forward and stepping down, and the efficiency is also very high. However, if you want to pull back and go up, this action may feel uncomfortable and easy to fatigue. After effective training, the use of different forces of pedaling force in different phases can lead to the most efficient pedaling action; for example, in general, the crank is at 90 degrees, which is 3 o'clock, which helps. The direction of the tangential force of the crank rotation will be perpendicular to the ground, and the best benefits will be obtained by stepping on the pedal. In contrast, at 270 degrees and 9 o'clock, not only is it difficult to apply force, but the weight of the leg at this time has the greatest negative impact. Therefore, in the pursuit of pedaling efficiency, it should be noted whether the maximum force applied point is near the 3 o'clock direction; and when the pedaling action comes to the 9 o'clock direction, can the legs pass smoothly and quickly. These two factors will greatly affect the pedaling efficiency. It can be seen that if the pedaling force and the pedaling efficiency are directly measured by the sensor with the pedaling force and the pedaling efficiency, the sensing result is affected by the artificial pedaling factor. In addition, the installation program is difficult, can not be universal, the range of sensor voltage output value is not easy to control, and so on. Therefore, the technology of stepping force and pedaling efficiency directly by the sensor with pedaling force and pedaling efficiency is still very good. Great improvement space.

Therefore, if the power sensing device is mounted on the interior of the frame or on the surface of the frame, the power sensing device has an inertial sensing module, wherein the inertial sensing module can replace the chronograph The function of multiple sensors, such as power meter, can not only reduce the cost of installing too many sensors, but also effectively reduce the weight of the bicycle without destroying the original frame design. Therefore, the present invention should be an optimal solution.

The invention relates to a power sensing system for bicycles, which can be applied to the interior of a bicycle frame of any form or on the surface of a frame, and analyzes the pedaling efficiency during riding in a high-frequency manner. And more capable of displaying the operation result on an electronic vehicle for providing and displaying the instant riding information.

The invention relates to a power sensing system for bicycles, which is capable of measuring double pedaling force, and has the advantages of large measuring force range, easy assembly, universal use of various brand models, and light weight of sensors.

A power sensing system for a bicycle includes: a power sensing device that can be disposed inside a frame of a bicycle or on a surface of a frame, and the power sensing device includes at least one inertial sensing mode The group is configured to detect digital signal change data of the bicycle, and the digital signal change data is included in at least a duration of acceleration or angular acceleration waveform; a processing module is electrically coupled to the inertial sensing module The inertial sensing module is capable of transmitting the digital signal change data to the processing module, and the processing module is capable of changing data by the digital signal, at least Calculating the pedaling frequency and the pedaling force during the operation of the bicycle, wherein the pedaling frequency and the pedaling force are obtained by judging and analyzing the acceleration peak and the angular acceleration peak in the acceleration or angular acceleration waveform; a transmission module is The processing module is electrically connected to transmit the calculated result of the processing module; and an electronic carrier is capable of being connected Transmission of the result of the transfer module operation, and displays information to provide immediate riding.

More specifically, the processing module further includes a first analyzing unit capable of capturing time between at least two accelerations or angular acceleration peaks of acceleration or angular acceleration waveforms within a certain period of time To calculate the pedaling frequency of the bicycle.

More specifically, the processing module further includes a second analyzing unit capable of capturing the peak value in the acceleration or angular acceleration waveform for a certain period of time to calculate the ride on the bicycle. The value of the rider's pedaling power.

More specifically, the electronic vehicle is a handheld smart device, and the handheld smart device can be installed with an application, and the application can receive the result of the operation transmitted by the transmission module, and perform Displayed on the app to provide instant ride information by the app.

More specifically, the inertial sensing module is an accelerometer or a gyroscope.

More specifically, the transmission module can transmit the calculated result of the processing module in a wired transmission manner or a wireless transmission manner, so that the electronic carrier can receive the operation transmitted by the transmission module. the result of.

A power sensing system for a bicycle includes: a power sensing device that can be disposed inside a frame of a bicycle or on a surface of a frame, and the power sensing device includes at least one inertial sensing mode The group is configured to detect digital signal change data of the bicycle, and the digital signal change data is included in at least a duration of acceleration or angular acceleration waveform; a processing module is electrically coupled to the inertial sensing module The inertial sensing module can respectively transmit the digital signal change data to the processing module; the transmission module is electrically connected to the processing module And for transmitting the digital signal change data received by the processing module; and an electronic vehicle for displaying the instantaneous riding information and receiving the digital signal change data transmitted by the transmission module, and By using the digital signal change data, at least the pedaling frequency and the pedaling force during the operation of the bicycle are calculated, wherein the pedaling frequency and the pedaling force are Peak accelerations or angular velocity or angular acceleration waveform analysis judgment made.

More specifically, the electronic vehicle is a handheld smart device, and the handheld smart device can be installed with an application, and the application can receive the digital signal change data transmitted by the transmission module, and borrow The calculation and display of the digital signal change data provides instantaneous riding information including at least the pedaling frequency and the pedaling force.

More specifically, the in-app system further includes a first analyzing unit capable of capturing time between at least two accelerations or angular acceleration peaks of acceleration or angular acceleration waveforms within a certain period of time To calculate the pedaling frequency of the bicycle.

More specifically, the application system further includes a second analysis unit, the first The second analysis unit can calculate the peak value in the acceleration or angular acceleration waveform for a certain period of time to calculate the pedaling force value of the rider riding the bicycle.

More specifically, the inertial sensing module is an accelerometer or a gyroscope.

More specifically, the transmission module can transmit the digital signal change data received by the processing module in a wired transmission manner or a wireless transmission manner, so that the electronic carrier can receive the transmission of the transmission module. Digital signal change data.

1‧‧‧Power sensing device

11‧‧‧Inertial Sensing Module

12‧‧‧Processing module

121‧‧‧First analysis unit

122‧‧‧Second analysis unit

13‧‧‧Transmission module

2‧‧‧Electronic vehicle

21‧‧‧Application

211‧‧‧First analysis unit

212‧‧‧Second analysis unit

3‧‧‧Bicycle

31‧‧‧ frame

311‧‧‧ lower fork

[Fig. 1] is a schematic view showing the overall structure of a power sensing system for a bicycle of the present invention.

[Fig. 2] is a schematic diagram showing the internal structure of a power sensing device for a bicycle power sensing system of the present invention.

[Fig. 3] is a schematic diagram showing the internal structure of a processing module of a power sensing device for a bicycle power sensing system of the present invention.

[Fig. 4] Fig. 4 is a schematic view showing the internal structure of an electronic carrier of another embodiment of the power sensing device for a bicycle power sensing system.

[Fig. 5A] is a schematic view showing the application of the power sensing device for the bicycle power sensing system of the present invention.

[Fig. 5B] is a schematic view showing the application of the power sensing device for the bicycle power sensing system of the present invention.

[Fig. 6A] is a schematic diagram showing the acceleration or angular acceleration waveform of the power sensing device for the bicycle power sensing system of the present invention.

[Fig. 6B] is a schematic diagram of inertial sensing analysis of the power sensing device for the bicycle power sensing system of the present invention.

Other details, features, and advantages of the present invention will be apparent from the following description of the preferred embodiments.

Please refer to FIGS. 1~3 , which are schematic diagrams showing the overall structure of a power sensing system for a bicycle, an internal structure diagram of the power sensing device, and an internal structure of the processing module. The bicycle is used for the bicycle. The power sensing system includes a power sensing device 1 and an electronic carrier 2, wherein the power sensing device 1 includes at least one inertial sensing module 11, a processing module 12, and a transmission module 13. The inertial sensing module 11 is configured to detect digital signal change data of the bicycle, and the digital signal change data is included in at least a duration of acceleration or angular acceleration waveform; and the processing module 12 is coupled to The inertial sensing module 11 is electrically connected to control the inertial sensing module 11 to operate, and the inertial sensing module 11 can transmit digital signal change data to the processing module 12, and the processing module The group 12 further includes a first analyzing unit 121 and a second analyzing unit 122. Therefore, the processing module 12 can calculate the stepping frequency during the bicycle operation by using the digital signal change data. Rate and pedaling force; wherein the first analyzing unit 121 can calculate the time between at least two of the acceleration or angular acceleration waveforms in a certain period of time to calculate the pedaling frequency of the bicycle; and the second analysis The unit 122 is configured to calculate the acceleration or angular acceleration peak value in the acceleration or angular acceleration waveform for a certain period of time to calculate the pedaling force value of the rider riding the bicycle; After the stepping frequency and the pedaling force are calculated, the processing module 12 is further capable of transmitting the calculated result to the electronic carrier 2 through the transmission module 13 so that the electronic carrier 2 can display Providing instant riding information; and the electronic vehicle 2 can be a handheld smart device, and the handheld smart device can be installed with an application 21, and the application 21 can display to provide instant riding information, however, As shown in FIG. 4, the application 21 can also be provided with a first analysis unit 211 and a second analysis unit 212, and the operation modes of the first analysis unit 211 and the second analysis unit 212 are as described above, so Repeat it.

If the processing module 12 and the application 21 both have the ability to calculate the pedaling frequency and the pedaling force, the processing module 12 can select the self-calculating pedaling frequency and the pedaling force, or transmit the digital signal change data to the application. The program 21 is operated by the application 21; wherein only the processing module 12 has the ability to calculate the pedaling frequency and the pedaling force, the processing module 12 calculates the pedaling frequency and the pedaling force, and then The operation result is transmitted to the application 21; wherein, if only the application 21 has the ability to calculate the pedaling frequency and the pedaling force, the processing module 12 transmits the digital signal change data to the application 21, The application 21 performs an operation.

As shown in FIG. 5A or FIG. 5B, the power sensing device 1 is disposed on the inner or outer surface of the frame 31 of a bicycle 3 (in this embodiment, the power sensing device 1 is disposed on the frame). The internal signal sensing device 1 senses the digital signal change data, and the digital signal change data includes at least a duration of acceleration or angular acceleration waveform. And the acceleration or angular acceleration waveform is as shown in Figure 6A, and the acceleration or angular acceleration The waveform is generated because the inertial sensing module 11 can detect acceleration or angular acceleration data during the travel of the bicycle 3, but since the inertial sensing module 11 can be an accelerometer or a gyroscope, when using an accelerometer When using the acceleration peak-to-peak time to calculate the pedaling frequency, calculate the peak-to-valley variation to calculate the magnitude of the force; and if using the gyroscope, calculate the pedaling frequency using the angular acceleration peak-to-peak time, and calculate the peak value to The amount of change in the peaks and valleys calculates the magnitude of the force; as can be seen from Fig. 6A, the inertial sensing module 11 is implemented with an acceleration gauge, and a plurality of vertical acceleration peaks can be seen in the figure (if a gyroscope is used) Can see the angular acceleration waveform), one of the acceleration peaks means stepping on, and the time between the two peaks is at, while the pedaling frequency is CAD, and the calculation equation is: (60*k)/at, where k value It may be adjusted for different environments such as indoor and outdoor or riding state adjustment coefficient (filtering state), and the unit of numerical value calculated by pedaling frequency is RPM (60 represents unit conversion) The coefficient is a conversion factor from several times per second to several turns per minute); since the application uses the inertial sensing module on the frame to cause the frame to sway up and down when pedaling, each stepping The inertial sensing module on the frame will shake up and down once, so the inertial sensing module signal will generate a peak value, and the time difference between the two connected peak signals is used to calculate the pedaling frequency, so as shown in Fig. 6B The acceleration waveform is enlarged to indicate the position of the vertical acceleration peak. Since each (maximum) acceleration or angular acceleration peak corresponds to a different acceleration value, it can be in the acceleration (or angular acceleration) waveform in a certain period of time. The acceleration change value (maximum acceleration value - minimum acceleration value) corresponding to the peak value of all accelerations (or angular accelerations) is used as the basis for the pedaling force value calculation of the rider riding the bicycle, and the actual pedaling force equation is F =k×△a+R, where F is the pedaling force, k is the correction value constant (the unit is the g value), and Δa is the acceleration change value (the maximum acceleration value - the minimum acceleration value) The correction value R is constant, the period of time per After an acceleration peak size change (maximum acceleration value - minimum acceleration value) is calculated, the actual pedaling force can be calculated by the above formula.

The advantages of the power sensing system for bicycles provided by the present invention when compared with other conventional techniques are as follows:

(1) The present invention can be powered by a power sensing device mounted on the inside of the frame or on the frame, the power sensing device having an inertial sensing module, and the inertial sensing module can be integrated through a plurality of parameters The speed of the bicycle is available, and the inertial sensing module can replace the functions of multiple sensors such as a chronograph and a power meter. Therefore, in addition to reducing the cost of installing too many sensors, the weight of the bicycle can be effectively reduced, and Destroy the original frame design.

(2) The present invention can be applied to the inside of a bicycle frame of any form or on the surface of a frame, and the data is extracted at a high frequency, and then analyzed according to the amount of change in the waveform and the amount of change in height. The pedaling efficiency during riding is calculated, and the calculation result can be displayed on an electronic vehicle to provide and display the instant riding information.

(3) The invention can measure the double pedaling force, and has the advantages of large measuring force range, easy assembly, universal use of all brand models, light weight of the sensor, and no need to correct the starting voltage value.

The present invention has been disclosed in the above embodiments, and is not intended to limit the present invention. Any of those skilled in the art can understand the foregoing technical features and embodiments of the present invention without departing from the invention. In the spirit and scope, the scope of patent protection of the present invention is subject to the definition of the claims attached to the present specification.

Claims (7)

A power sensing system for a bicycle includes: a power sensing device that can be disposed inside a frame of a bicycle or on a surface of a frame, and the power sensing device includes: at least one inertial sensing The module is configured to detect the digital signal change data of the bicycle up and down, and the digital signal change data includes at least a vertical acceleration or an angular acceleration waveform for a duration; a processing module is coupled to The inertial sensing module is electrically connected to control the operation of the inertial sensing module, and the inertial sensing module can transmit digital signal change data to the processing module, and the processing module can be The digital signal change data calculates at least the pedaling frequency and the pedaling force during the operation of the bicycle, wherein the pedaling frequency and the pedaling force are obtained by judging and analyzing the acceleration peak and the angular acceleration peak in the acceleration or angular acceleration waveform. The processing module further includes a first analyzing unit and a second analyzing unit, wherein the first analyzing unit can capture a certain Calculating the pedaling frequency of the bicycle by calculating the time between the acceleration or the angular acceleration of at least two of the acceleration or angular acceleration waveforms, and the second analyzing unit can capture the acceleration or angular acceleration for a certain period of time The peak value of the waveform is used to calculate the value of the pedaling force of the rider riding the bicycle; a transmission module is electrically connected to the processing module for transmitting the calculated result of the processing module Going out; and an electronic vehicle capable of receiving the computed result transmitted by the transmission module and displaying it to provide instant riding information. A power sensing system for a bicycle according to claim 1, wherein the electronic vehicle Is a handheld smart device, and the handheld smart device can be installed with an application, and the application can receive the result of the operation transmitted by the transmission module and display it on the application. The app provides instant ride information. The power sensing system for a bicycle according to claim 1, wherein the inertial sensing module is an accelerometer or a gyroscope. The power sensing system for a bicycle according to claim 1, wherein the transmission module can transmit the calculated result of the processing module in a wired transmission manner or a wireless transmission manner, so that the electronic vehicle is driven. The result of the operation transmitted by the transmission module can be received. A power sensing system for a bicycle includes: a power sensing device that can be disposed inside a frame of a bicycle or on a surface of a frame, and the power sensing device includes: at least one inertial sensing The module is configured to detect digital signal change data of the bicycle frame up and down, and the digital signal change data includes at least a vertical acceleration or an angular acceleration waveform for a duration; a processing module is coupled to The inertial sensing module is electrically connected to control the operation of the inertial sensing module, and the inertial sensing module can respectively transmit digital signal change data to the processing module; a transmission module is coupled to The processing module is electrically connected to transmit the digital signal change data received by the processing module; and an electronic vehicle is configured to display and provide instant riding information and can receive the transmission module to transmit The digital signal change data, and by using the digital signal change data, at least calculate the pedaling frequency and the pedaling force during the operation of the bicycle, wherein the pedaling frequency And pedaling force based or angular acceleration by the acceleration or angular acceleration peak waveform to judge analysis made; wherein the electron carrier system A handheld smart device capable of installing an application capable of receiving digital signal change data transmitted by the transmission module and performing calculation and display by using the digital signal change data At least the instantaneous riding information of the pedaling frequency and the pedaling force is included, and the application system further includes a first analyzing unit and a second analyzing unit, wherein the first analyzing unit can capture the acceleration or angle in a certain period of time. Calculating the pedaling frequency of the bicycle by calculating the time between at least two accelerations or peaks of the angular acceleration acceleration, and the second analyzing unit can capture the peak value of the acceleration or angular acceleration waveform in a certain period of time Calculate the value of the pedaling force of the rider riding the bicycle. The power sensing system for a bicycle according to claim 5, wherein the inertial sensing module is an acceleration gauge or a gyroscope. The power sensing system for a bicycle according to claim 5, wherein the transmission module is capable of transmitting the digital signal change data received by the processing module in a wired transmission manner or a wireless transmission manner to enable the electronic The vehicle can receive the digital signal change data transmitted by the transmission module.