TWI782578B - Bicycle electronic control system and user identity authentication method - Google Patents

Abstract

The invention relates to a bicycle electric control system and a user identity authentication method, including a sensing module installed on the bicycle and a control module; the sensing module utilizes a crank sensing component and a vehicle speed sensing unit respectively Signals such as the torque and/or angle of the crank, and the speed of the vehicle are sensed, and sent to the control module to form a set of signal sequences, which are used as authentication keys for the identity of the bicycle user.

Description

Bicycle electronic control system and user identity authentication method

The present invention relates to a bicycle electronic control system and a user identity authentication method, especially to a related technology for compiling a set of signal sequences for identity verification by sensing signals such as the user's pedaling force, frequency, and/or crank position.

For a long time, bicycles have been widely favored by people, regardless of age group, because of their inherent characteristics, which can be used as transportation or fitness equipment; in recent years, due to the prevalence of shared bicycles and electric vehicles, Further expand the popularity of bicycles. Regardless of whether it is self-owned or shared, identity verification is a very important part. In the past, the key generation methods used to verify identity may come from digital keyboards, biometric modules, etc. The former compares the password with the pre-stored set password by entering a password. Yes, if it matches, it will be verified and unlocked. However, the disadvantage of password unlocking is that it is easy to be cracked, and the password must be changed frequently, but frequent password changes involve management problems. The biometric identification module is based on the identification of the user's biological characteristics (such as fingerprints, face shape or pupils, etc.) as the basis for verification. , and also has the problem of integration with the electronic control system of the bicycle, so the construction cost is relatively high and it is difficult to popularize.

From the above, it can be seen that the authentication and anti-theft of bicycles or electric-assisted bicycles is a very important part, but the existing authentication mechanism has problems of low security, or high construction cost and difficult to popularize, so it needs further review and seeks a feasible solution.

Therefore, the main purpose of the present invention is to provide a bicycle electronic control system and a user identity authentication method, which can use many sensors built on bicycles to obtain signals such as the user's pedaling force, position and/or vehicle speed, and then compile a signal sequence , for authentication purposes.

The main technical means adopted to achieve the aforementioned purpose is to make the aforementioned bicycle electronic control system include a sensing module and a control module; wherein the sensing module includes: a first computing unit; a crank sensing component, and the The first computing unit is connected to sense the torque and/or angle of a crank; a vehicle speed sensing unit is used to detect and obtain a vehicle speed signal and send it to the first computing unit; thus, the sensing module provides A plurality of sensing signals are sent to the control module; the control module is used to receive the plurality of sensing signals sent by the sensing module and arrange them into a set of signal sequences, which are mainly composed of more than one signal segment Composition, each signal segment combination is composed of more than one signal segment with characteristics.

The main technical means adopted to achieve the aforementioned purpose is that the aforementioned user identity authentication method includes: receiving multiple sensing signals within a time interval; dividing each sensing signal into multiple signal segments; Signal segment combinations of signal segments; comparing signal segment features in each signal segment combination to authenticate a user identity.

As can be seen from the above, the present invention uses the sensing module of the electronic control system to detect and obtain sensing signals such as the speed of the bicycle, the angle and/or torque of the crank, and sends them to the control module to be divided into multiple signal segments, and then compiled into The combination of signal segments is used as the key for authenticating the identity of the user. Since multiple sense signals can Based on the permanent sensors on the bicycle, the construction cost is low, and the threshold for system integration is low; moreover, due to the combination of signal segments as the authentication key, its composition (quantity) and the characteristics of each sensing signal are different. It is determined by the user and set by himself, so the possibility of being cracked is low and has high security. Therefore, the identity authentication technology of the present invention takes both security and construction cost into consideration, and is easy to popularize.

10: Sensing module

11: The first computing unit

12: Crank sensing component

121: Torque sensing unit

122: Angle sensing unit

13: Vehicle speed sensing unit

14: The first communication port

15: Tilt sensing unit

16:Brake sensing unit

20: Control module

21: The second computing unit

22: Second communication port

23: storage unit

24: Man-machine interface

30: mobile phone

Signal 1: crank torque sensing signal

Signal 2: crank angle sensing signal

Signal 3: Vehicle speed sensing signal

P1, P2, P3, P4: combination of signal segments

S11~S14, S21~S24, S31~S34: signal section

A, B, C, D: lights

Fig. 1 is a system block diagram of the present invention.

Fig. 2 is a flow chart of the method of the present invention.

FIG. 3 is a waveform diagram of sensing signals of multiple signal sources in the present invention.

FIG. 4 is a schematic diagram of dividing the sensing signal into signal segments according to the present invention.

FIG. 5 is a schematic diagram of the signal segment combination architecture of the present invention.

FIG. 6 is a schematic diagram of parameters of signal segment combination in the present invention.

FIG. 7 is a flow chart of setting authentication data in recording mode according to the present invention.

FIG. 8 is a flow chart of identity authentication in the present invention.

FIG. 9 is a schematic diagram of a light signal for guiding input of an authentication signal through a man-machine interface according to the present invention.

The present invention includes a bicycle electronic control system and a user identity authentication method, wherein, a preferred embodiment of the bicycle electronic control system, please refer to Figure 1, which includes a sensing module 10 and a control module 20 .

The sensing module 10 includes a first calculation unit 11, a crank sensor assembly 12, and a vehicle speed sensor unit 13. The crank sensor assembly 12 is installed at a position related to the crank of the bicycle for sensing the crank. torque magnitude and/or angle, in this embodiment, the crank sensing assembly 12 includes a torque sensing unit 121, an angle sensing unit 122, the torque sensing unit 121, the angle sensing unit 122 is respectively connected with the first computing unit 11 to provide crank torque and angle sensing signals, and the vehicle speed sensing unit 13 is connected to the first computing unit 11 to provide bicycle speed sensing signals to the first computing unit 11.

The sensing module 10 and the control module 20 can be combined into one or each constitutes an independent device, which can be installed in appropriate positions on the bicycle respectively. In this embodiment, the sensing module 10 and the control module 20 They are independent devices, so the sensing module 10 further includes a first communication port 14, which can be a wired or wireless communication protocol, which is connected to the first computing unit 11 as the sensing module 14. The communication interface between the test module 10 and the control module 20.

The above is the basic composition of the sensing module 10. In addition, the sensing module 10 may further include a tilt sensing unit 15 and a brake sensing unit 16 respectively connected to the first computing unit 11, The tilt sensing unit 15 can be composed of a gyroscope and other devices to detect the attitude of the bicycle, and the brake sensing unit 16 is used to sense whether the bicycle is braked or not.

The sensing module 10 receives sensing signals from each sensing unit via the first computing unit 11 and transmits them to the control module 20 through the first communication port 14 . The control module 20 includes a second computing unit 21, a storage unit 23 and a man-machine interface 24 respectively connected to the second computing unit 21; when the control module 20 and the sensing module 10 are combined into one, the The second computing unit 21 and the first computing unit 11 of the sensing module 10 can be integrated to form an independent computing unit; in this embodiment, the control module 20 and the sensing module 10 are independent, so the control The module 20 further includes a second communication port 22, which is compatible with the first communication port 14 of the sensing module 10, and serves as a communication interface between the control module 20 and the sensing module 10 , so that the second computing unit 21 receives various sensing signals sent by the first computing unit 11 through the second communication port 22, generates an authentication key after computing and processing, and compares it with the authentication data prestored in the storage unit 23 , to confirm the identity of the user; on the other hand, the second communication port 22 can also be used to connect with a mobile phone 30 .

In this embodiment, the storage unit 23 is composed of non-volatile memory. The man-machine interface 24 is for the user to set authentication data, which can be a built-in device of the control module 20, or an external device. When the control module 20 is connected with a mobile phone 30, the man-machine interface 24 can be controlled by Touch screen, voice input and/or more than one button on the mobile phone.

The following further illustrates how the control module 20 composes the key required for authenticating the identity of the user, as shown in Figure 2, which includes: receiving a plurality of sensing signals (201) within a time interval; Divide into multiple signal segments (202); compose one or more signal segment combinations (203) containing more than one signal segment; compare signal segment features in each signal segment combination to authenticate a user identity (204).

The control module 20 performs user identity authentication by executing the above-mentioned process, and the authentication data for comparison is set before the actual authentication (the setting mode will be described in detail later) to determine the sensing signal (signal source) ) and the number of signal segment combinations, in this embodiment, 3 sensing signals and 4 signal segment combinations are selected.

Regarding the aforementioned step (201), please refer to FIG. 3, the three sensing signals received by the sensing module 10 by the control module 20 during a time interval t0-t4 include: crank torque sensing signal Signal 1, Crank angle sensing signal Signal 2 and vehicle speed sensing signal Signal 3; wherein, the unit of the crank torque sensing signal Signal 1 is Nm, and the torque change system within the time interval t0~t4 is maintained at a certain value after increasing and then decreasing to 0; the crank torque sensing signal Signal 2 is every time a high-low level transition occurs within the time interval t0~t4, which means that the crank rotates 10 degrees in the same direction; the unit of the vehicle speed sensing signal Signal 3 is km/h.

Regarding the aforementioned step (202), after the control module 20 receives the three sensing signals, as shown in FIG. Divided into 4 signal segments S11~S14, S21~S24, S31~S34, that is, there are 12 signal segments in total, and then as before Step (203), the control module 20 will use specific signal segments to compile more than one signal segment combination, each signal segment combination includes more than one signal segment; in this embodiment, please refer to Figure 5, The control module 20 is programmed into 4 signal segment combinations P1, P2, P3, P4, and the 4 signal segment combinations P1, P2, P3, P4 are in sequence, wherein the signal segment combination P1 includes two signal segment S11, S31 1. The signal segment combination P2 has one signal segment S12, the signal segment combination P3 has one signal segment S23, and the signal segment combination P4 also has only one signal segment S34.

Furthermore, each signal segment S11~S14, S21~S24, S31~S34 has corresponding parameters (as shown in Figure 6): the signal segment combination (Patten ID): which signal segment combination the signal segment belongs to, for example Signal segment S11 belongs to signal segment combination P1.

Segment ID: It is a unique number for each signal segment S11~S14, S21~S24, S31~S34 to identify different signal segments.

Algorithm: It extracts the characteristics of each signal segment through a specific algorithm. For example, the algorithm of signal segment S11 adopts any value (Any value), and the algorithm of signal segments S31, S12, and S34 adopts the average value (Average), the algorithm of the signal segment S23 adopts the cumulative value (Accumulate).

Direction: positive or negative.

Threshold (Threshold): It is a parameter used to determine the characteristics of the signal segment, such as the threshold value of the signal segment S11 is 10Nm, the threshold value of the signal segment S31 is 5km/h, the threshold value of the signal segment S12 is 20Nm, and the threshold value of the signal segment S23 The threshold value is 720 degrees, and the threshold value of the signal section S34 is 8km/h.

According to the above parameters, taking the signal segment S11 as an example, which is a crank torque sensing signal, its characteristics are defined as follows according to the definition of relevant parameters: Any value of T(t) between t0 and t1 are positive than 10 Nm.

After the control module 20 completes the aforementioned step (203), it can further execute step (204) to compare each signal segment combination P1, P2, P3, P4 with the preset authentication data, and the comparison method is as follows: Whether the characteristics of the signal segments in each signal segment combination P1, P2, P3, P4 conforms to the preset authentication data is used as the basis for whether to pass the user identity authentication, for example, in the signal segment S11 (crank torque sensing signal) in the time interval If it exceeds 10Nm in the period t0~t1, it meets the characteristics, and if it is less than 10Nm, it does not meet the characteristics. And all the signal segment combinations P1, P2, P3, P4 are sequentially compared to match the characteristics of each signal segment one by one, so that they can pass the user identity verification.

As mentioned above, the authentication data pre-stored in the storage unit 23 of the control module 20 is preset by the user, mainly because the man-machine interface 24 of the control module 20 provides a manual mode and a recording mode ; Wherein, the manual mode is to utilize the man-machine interface 24 to set the quantity and the signal segment time (for example, t0～t1, t1～t2, t2～t3, t3～t4 division cycle shown in Figure 4 as shown in Figure 6) ), and then directly input values to set the characteristics of each signal segment, such as signal type (crank torque, crank angle and/vehicle speed, etc.), algorithm, direction and threshold value and other parameters.

Regarding the recording mode, the user uses the bicycle components to complete corresponding actions in sequence according to the guidance of the man-machine interface 24 (such as stepping on the pedal to rotate the crank, making the vehicle body move to generate vehicle speed, etc.), and the sensor module 10 Each sensing unit of each sensing unit obtains the sensing signal to set. A feasible specific process is shown in FIG. 7, which includes: displaying the signal segment combination number (701) to be recorded; Signal source value change (703)?

If yes, further judge whether there is more than one signal source with value change? (704), if no, it means that only one signal source has a value change, that is, store a corresponding signal segment (705); if more than one signal source has a value change, it is further judged whether to support multi-signal source recording (706), if so , then store a plurality of corresponding signal segments (705); if multi-source recording is not supported, store the signal segment with the highest priority setting signal source (707), then determine whether it is the last signal segment combination (708), if not The last one, which goes back to the previous steps (701), repeat the preceding steps for the recording of the next signal segment combination; if it is the last signal segment combination, then complete the setting.

After completing the foregoing setting procedures, identity authentication can be carried out, and its process can be as shown in Figure 8, which includes: displaying the signal segment combination number (801) to be input at present; judging whether it has been input (802), if not input Repeat this step; if it has been input, compare it with the pre-stored authentication data (803), and judge whether the characteristics match (804); if not, return to step (802); if the comparison matches, then judge whether It is the last signal segment combination (805), if so, the authentication is completed, if not the last signal segment combination, then switch to the next signal segment combination (806), and return to step (801).

As shown in FIG. 9 , it further reveals how the man-machine interface 24 of the control module 20 guides the user to complete the authentication with lights. Four lights A, B, C, and D are displayed on the man-machine interface 24 to perform When inputting, the first light A flashes to prompt the user to input the authentication signal, and the other lights B, C, and D are off. After the input of the authentication signal of the first signal segment combination is completed, the first light A All on, the second light B is flashing, and the lights C and D are off to prompt the user to input the authentication signal of the second signal segment combination; after the input of the authentication signal of the second signal segment combination is completed, the first, The two lights A and B are all on, the third light C is flashing, and the light D is off to remind the user to enter the authentication signal of the third signal segment combination. After the input is completed, the first to three lights A , B, and C are all on, and the fourth light D is flashing, prompting the user to input the authentication signal of the fourth signal segment combination. After the completion, all lights A, B, C, and D are all on, indicating that the authentication has been passed.

In the aforementioned authentication process, if the characteristics of the authentication signal input by the user do not match the default authentication information or the input is timed out, etc., you can wait for the light signal to indicate to re-enter, but if the input fails for a certain number of times, it will enter the locked state and terminate the authentication. program.

To sum up, in the present invention, the sensing module first obtains the sensing signals such as the speed of the bicycle, the angle of the crank and/or the torque, etc., and sends them to the control module to be divided into multiple signal segments, and then compiled into a combination of signal segments to As a key to authenticate the user's identity. Among them, the multiple sensing units of the sensing module can be permanent sensors on bicycles today, and its construction cost is low, and the threshold of system integration is low; The (quantity) and the characteristics of each sensing signal are determined and set by the user, so the possibility of being cracked is low and the security is high. Therefore, the present invention is not easily accomplished by persons with ordinary knowledge in the technical field with reference to the prior art, so it meets the requirements of the patent and possesses progressiveness.

10: Sensing module

11: The first computing unit

12: Crank sensing component

121: Torque sensing unit

122: Angle sensing unit

13: Vehicle speed sensing unit

14: The first communication port

15: Tilt sensing unit

16:Brake sensing unit

20: Control module

21: The second computing unit

22: Second communication port

23: storage unit

24: Man-machine interface

30: mobile phone

Claims (12)

An electronic control system for a bicycle, which includes a sensing module and a control module; the sensing module includes: a first computing unit; a crank sensing component connected with the first computing unit for sensing A crank torque and/or angle-vehicle speed sensing unit, used to detect and obtain a vehicle speed signal, and send it to the first computing unit; thereby, the sensing module provides a plurality of sensing signals to the control module; The control module is used to receive a plurality of sensing signals sent by the sensing module and arrange them into a set of signal sequences. The signal sequence is mainly composed of more than one signal segment combination, each signal segment combination consists of more than one Composition of characteristic signal segments; using the above-mentioned signal sequence composed of more than one combination of signal segments to authenticate a user identity. According to the bicycle electronic control system described in Claim 1, the sensing module further includes a tilt sensing unit and a brake sensing unit, and the tilt sensing unit and the brake sensing unit are respectively connected to the first computing unit. According to the bicycle electronic control system described in claim 1, the control module includes a second computing unit, a storage unit and a man-machine interface, and the storage unit and the man-machine interface are respectively connected to the second computing unit. According to the bicycle electronic control system described in claim 3, the storage unit of the control module is mainly composed of non-volatile memory, and the man-machine interface includes a touch screen, voice control input and/or more than one button. According to the bicycle electronic control system described in any one of claims 1 to 4, the sensing module includes a first communication port, the control module includes a second communication port, and the second communication port communicates with the first port compatible. A user identity authentication method, mainly executed by the control module described in any one of claims 1 to 5, comprising: receiving multiple sensing signals within a time interval; dividing each sensing signal into A plurality of signal segments; compiling one or more signal segment combinations containing more than one signal segment; comparing the signal segment characteristics in the signal segment combination to authenticate a user identity. According to the user identity authentication method described in Claim 6, there are multiple signal segment combinations, and each signal segment combination is in sequence. In the user identity authentication method described in claim 6, the multiple sensing signals are divided into multiple signal segments within the time interval, and each signal segment contains the following parameters: a combination of signal segments: define the signal The combination of signal segments to which the segment belongs; a signal segment number: the unique number of the signal segment; an algorithm: used to extract the characteristics of the signal segment; a direction: forward or reverse; a threshold value. The user identity authentication method as described in request item 6 includes a recording mode for the user to set authentication data, the recording mode includes: displaying the combination number of the signal segment currently to be recorded; starting recording; judging whether there is a signal source showing a value Change; if yes, store a corresponding signal segment; then judge whether it is the last signal segment combination, if not, return to the step of displaying the signal segment combination number to be recorded at present; if it is the last signal segment combination, then complete the setting. In the user identity authentication method described in Claim 9, after judging whether there is a value change in any signal source, it is further judged whether there is more than one signal source that has a value change, and if so, storing multiple corresponding signal segments. In the user identity authentication method described in claim 10, after judging whether there is more than one signal source with value change, it is further judged whether multi-signal source recording is supported, and if not, the signal segment of a signal source with the highest priority setting is stored. The user identity authentication method as described in Claim 9 includes a manual mode for the user to manually set the authentication information.

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