A method for automatic gear shifting of a bicycle

Abstract

The application discloses a bicycle automatic gear shifting method, comprising the following steps: step 1: providing a bicycle, the bicycle is provided with an electronic gear shifter, a torque sensor for collecting the central shaft torque, a speed sensor for detecting the speed, a main control module for data processing and control, the data collected by the torque sensor and the speed sensor are all sent to the main control module; step 2: judging whether the bicycle is in an acceleration state or a deceleration state through the obtained riding speed, obtaining the pedaling strength of a rider through the torque sensor, when the pedaling strength of the rider is less than a preset value and the bicycle is in the acceleration state, the main control module controls the electronic gear shifter to perform a gear reduction operation; when the pedaling strength of the rider is greater than the preset value and the bicycle is in the deceleration state, the main control module controls the electronic gear shifter to perform a gear increase operation. The application has the beneficial effects of improving the riding experience and reducing the bicycle damage and the risk of sports injury.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycles, and in particular to an automatic speed changing method for a bicycle. Background Art

[0002] Most existing bicycles use manual shifting by the rider. When shifting gears, the rider controls the front and rear derailleurs by moving the left and right shifters of the electronic derailleur. Correct shifting is achieved based on specific riding conditions, which requires specific training and rich experience for the rider to master. Improper shifting not only makes riding difficult and affects the riding experience, but also causes problems such as wear and deformation of the bicycle chain and pressure plate, and sports injuries to the user's knees and other parts.

[0003] Therefore, the existing technology has defects and needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a bicycle automatic speed changing method to achieve automatic speed changing and gear shifting of a bicycle.

[0005] The technical solution of the present invention is as follows: The present invention provides a bicycle automatic speed change method, comprising the following steps: Step 1: providing a bicycle, wherein the bicycle is provided with an electronic transmission, a torque sensor for collecting the torque of the middle shaft, a speed sensor for detecting the speed, and a main control module for performing data processing and control, wherein the data collected by the torque sensor and the speed sensor are sent to the main control module;

[0006] Step 2: Determine whether the bicycle is in an accelerating state or a decelerating state based on the obtained riding speed, and obtain the rider's pedaling force through the torque sensor. When the rider's pedaling force is less than a preset value and the bicycle is in an accelerating state, the main control module controls the electronic transmission to reduce the gear; when the rider's pedaling force is greater than the preset value and the bicycle is in a decelerating state, the main control module controls the electronic transmission to increase the gear.

[0007] Furthermore, in step 2, the method for determining whether the bicycle is in an accelerating state or a decelerating state is as follows: when the instantaneous speed of the bicycle at this moment is greater than the average speed in the past certain period of time, the bicycle is determined to be in an accelerating state; when the instantaneous speed of the bicycle at this moment is less than the average speed in the past certain period of time, the bicycle is determined to be in a decelerating state.

[0008] Furthermore, the certain time is 3 seconds.

[0009] Furthermore, in step 2, the main control module controls the electronic transmission to shift gears at a time point when the user's pedaling force is the smallest during one rotation of the bicycle pedal.

[0010] Furthermore, in step 1, the bicycle is also provided with a slope sensor for detecting the slope, and the data collected by the slope sensor is sent to the main control module. In step 2, the main control module controls the electronic transmission to shift gears and selects the optimal gear for shifting based on the speed data, slope data and pedaling force data.

[0011] Furthermore, the slope sensor, speed sensor and main control module are all integrated on a cycle computer, and the cycle computer is communicatively connected to the electronic transmission via Bluetooth and / or ANT+ communication.

[0012] Furthermore, the code table is also communicatively connected to an electronic device, and the code table can be set and / or the program of the code table can be updated through the electronic device.

[0013] Furthermore, the code table is connected to a background server for communication and stores working data in the background server, and the working data can be analyzed and viewed through the background server.

[0014] By adopting the above scheme, the beneficial effect of the present invention is that after collecting and processing data through components such as torque sensors and speed sensors, the electronic transmission is controlled to change reasonable gears, which can improve the riding experience and reduce the risk of bicycle damage and sports injuries. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to specific embodiments.

[0016] The present invention provides a bicycle speed change method, comprising the following steps: Step 1: providing a bicycle, wherein the bicycle is provided with an electronic transmission, a torque sensor for collecting the torque of the central axis, a speed sensor for detecting the speed of the bicycle, and a main control module for performing data processing and control. The torque sensor is provided at the central axis of the bicycle, and can collect the force exerted by the rider on the pedals. The electronic transmission is used to change the gear position of the chainring (including 1st and 2nd gears, with smaller gear numbers indicating smaller chainrings) and the flywheel (including 1st to 8th gears, with smaller gear numbers indicating larger chainrings) provided at the central axis, thereby changing the overall gear position of the bicycle and realizing upshifting and downshifting functions. The data collected by the torque sensor and the speed sensor are both sent to the main control module for processing, and after processing, the main control module can drive the electronic transmission to perform gear shifting operations.

[0017] Step 2: Determine whether the bicycle is in an accelerating or decelerating state through the acquired riding speed, and acquire the rider's pedaling force through the torque sensor. When the rider's pedaling force is less than a preset value and the bicycle is in an accelerating state, the main control module controls the electronic transmission to reduce the gear; when the rider's pedaling force is greater than the preset value and the bicycle is in a decelerating state, the main control module controls the electronic transmission to increase the gear. The automatic gear shifting function can avoid risks such as damage to the vehicle and sports injuries caused by gear errors.

[0018] Furthermore, in step 2, the method for determining whether the bicycle is in an accelerating state or a decelerating state is: when the instantaneous speed of the bicycle at this moment is greater than the average speed in the past 3 seconds, the bicycle is determined to be in an accelerating state; when the instantaneous speed of the bicycle at this moment is less than the average speed in the past 3 seconds, the bicycle is determined to be in a decelerating state.

[0019] Furthermore, in step 2, the main control module controls the electronic transmission to shift gears at the moment when the user's pedaling force is the smallest during one rotation of the bicycle pedal. Shifting gears at this moment can further reduce the risk of gear shifting jams and loss of motion caused by excessive force by the rider, making riding smoother.

[0020] Furthermore, in step 1, the bicycle is also provided with a slope sensor for detecting slope, and the data collected by the slope sensor is transmitted to the main control module. In step 2, the main control module controls the electronic transmission to select the optimal gear for shifting based on the speed data, slope data, and pedaling force data, thereby achieving more accurate automatic gear shifting. Specifically, in actual operation, the speed is graded, such as 0-5 (excluding 5) km / h, 5-15 (excluding 15) km / h, etc., and the slope is also graded accordingly. The gear position of the chainring at the center axis position and the flywheel at the rear wheel position of the electronic transmission after shifting is determined based on the corresponding pedaling force. For example, when the bicycle is at a speed of 10 km / h and is in an accelerating state, and the bicycle is in an uphill state with a slope of 6%, if the torque sensor measures the rider's pedaling force as less than 60 N·m, then when controlling the electronic transmission to shift, the chainring gear position can be selected as 1 and the flywheel gear position can be selected as 2.

[0021] Furthermore, the slope sensor, speed sensor and main control module are all integrated on a cycle computer, and the cycle computer is communicatively connected to the electronic transmission via Bluetooth and / or ANT+ communication.

[0022] Furthermore, the code table is also communicatively connected to an electronic device, and the code table can be set and / or the program of the code table can be updated through the electronic device.

[0023] It is worth noting that in this solution, the automatic shifting mode of the electronic transmission does not conflict with the conventional manual shifting mode of the electronic transmission (such as manually shifting the paddles to change gears when riding a bicycle). In some cases, automatic shifting and manual shifting can coexist, or the automatic shifting function can be switched on and off through switches.

[0024] Furthermore, the code table is connected to a background server for communication and stores working data in the background server. For example, the working data can be stored in the background server through an electronic device, and the working data can be analyzed and viewed through the background server.

[0025] In summary, the beneficial effect of this solution is that after collecting and processing data through components such as torque sensors and speed sensors, the electronic transmission is controlled to change reasonable gears, which can improve the riding experience and reduce the risk of bicycle damage and sports injuries.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bicycle automatic speed shifting method, characterized in that: The invention comprises the following steps: Step 1: providing a bicycle, which is provided with an electronic transmission, a torque sensor for collecting the torque of the middle shaft, a speed sensor for detecting the speed, and a main control module for data processing and control, wherein the data collected by the torque sensor and the speed sensor are all sent to the main control module; Step 2: judging whether the bicycle is in an accelerating state or a decelerating state by the obtained riding speed, and obtaining the pedaling force of the rider by the torque sensor; when the pedaling force of the rider is less than a preset value and the bicycle is in an accelerating state, the main control module controls the electronic transmission to reduce the gear position; when the pedaling force of the rider is greater than the preset value and the bicycle is in a decelerating state, the main control module controls the electronic transmission to increase the gear position; in Step 2, judging whether the bicycle is in an accelerating state or a decelerating state The method for determining whether a bicycle is in an accelerating state or a decelerating state is as follows: when the instantaneous speed of the bicycle at this moment is greater than the average speed over a certain period of time in the past, the bicycle is judged to be in an accelerating state; when the instantaneous speed of the bicycle at this moment is less than the average speed over a certain period of time in the past, the bicycle is judged to be in a decelerating state; in step 2, the time point at which the main control module controls the electronic transmission to shift gears is: the moment when the user's pedaling force is the smallest during one rotation of the bicycle pedal; in step 1, the bicycle is further provided with a slope sensor for detecting the slope, and the data collected by the slope sensor is sent to the main control module. In step 2, the main control module controls the electronic transmission to shift gears, and selects the optimal gear for conversion based on the speed data, the slope data, and the pedaling force data.

2. The bicycle automatic speed shifting method according to claim 1, characterized in that: The certain time is 3 seconds.

3. The bicycle automatic speed shifting method according to claim 1, wherein: The slope sensor, speed sensor and main control module are all integrated on the cycle computer, and the cycle computer is connected to the electronic transmission via Bluetooth and / or ANT+ communication.

4. The bicycle automatic speed shifting method according to claim 3, characterized in that: The code table is also in communication with an electronic device, and the code table can be set and / or the program of the code table can be updated through the electronic device.

5. The bicycle automatic speed shifting method according to claim 3, characterized in that: The code table is connected to a background server for communication and stores working data in the background server, and the working data can be analyzed and viewed through the background server.