Electronic lock device for bicycle based on UWB technology

Abstract

This utility model discloses a bicycle electronic lock device based on UWB technology, which is installed behind the bicycle seat and includes a main body and a lock / unlock module. The main body houses a latch and a motor that drives the latch to extend and retract. The lock / unlock module includes: a UWB communication unit that transmits / receives UWB pulse signals and measures the transmission time of the UWB pulse signals; a control unit that calculates the relative distance between the electronic lock device and a smart terminal based on the transmission time and compares the calculated relative distance with a preset unlocking distance to generate a control signal; the control unit is configured to transmit the control signal to the motor, thereby actuating the latch to perform unlocking or locking operations. This utility model utilizes UWB technology to achieve centimeter-level or even millimeter-level positioning accuracy, enabling precise identification of the relative position of the user and the bicycle. This high-precision positioning greatly improves system security and effectively prevents illegal unlocking and theft.

Description

Technical Field

[0001] This utility model relates to the field of UWB communication technology, and in particular to an electronic lock device for bicycles based on UWB technology. Background Technology

[0002] With advancements in technology and increased public awareness of safety, bicycles, as an important mode of daily transportation, have seen growing attention regarding their security. Traditional bicycle locks mostly use mechanical lock cylinders, which pose security risks such as easy key loss and duplication. To address these issues, electronic bicycle locks have gradually emerged on the market. These locks use methods such as passwords, Bluetooth, and RFID for unlocking, improving both security and convenience.

[0003] However, existing electronic locks still have some shortcomings in distance measurement and unlocking control. For example, some locks using Bluetooth technology, while enabling wireless unlocking, often require a relatively short distance to unlock due to the limited transmission distance and stability of Bluetooth signals, and are susceptible to interference from other Bluetooth devices. Furthermore, while some locks using RFID technology can unlock via radio frequency signals, the relatively easy copying and forgery of RFID tags poses certain security risks.

[0004] To address these issues, the industry has begun exploring bicycle electronic lock devices based on UWB (Ultra Wideband) technology. UWB technology is a novel wireless communication technology with advantages such as high transmission speed, low power consumption, strong anti-interference capabilities, and high spatial resolution. In distance measurement, UWB technology achieves precise distance measurement of target objects by transmitting and receiving ultra-wideband pulse signals and measuring the signal transmission time. This characteristic has led to the widespread application of UWB technology in fields such as security access control and indoor positioning.

[0005] However, despite the significant advantages of UWB technology in distance measurement, several technical challenges remain when applying it to bicycle electronic lock devices. These include designing a suitable UWB communication unit to ensure stable signal transmission and accurate measurement; designing an efficient control unit to generate accurate control signals based on the measured distance and achieve precise control of the lock; and integrating UWB technology with the structure of the bicycle lock to achieve convenient and secure unlocking operations. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a bicycle electronic lock device based on UWB technology.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A bicycle electronic lock device based on UWB technology is installed behind the bicycle seat, including a main body and a lock switch module. The main body is equipped with a latch and a motor for driving the latch to extend and retract. The lock switch module includes:

[0009] The UWB communication unit is used to transmit / receive UWB pulse signals and measure the transmission time of the UWB pulse signals.

[0010] The control unit is used to calculate the relative distance between the electronic lock device and the smart terminal through the transmission time and compare the calculated relative distance with the preset unlocking distance, so as to generate a control signal for controlling the lock opening and closing based on the comparison result;

[0011] The control unit is configured to transmit the control signal to the motor, thereby actuating the latch to perform unlocking or locking operations.

[0012] Furthermore, the pulse signals transmitted and received by the UWB communication unit have arbitrary pulse widths between 0.1ns and 1.5ns.

[0013] Furthermore, the control unit includes an actuator having a sleep state when the control signal is not received and a wake-up state when the control signal is received.

[0014] Furthermore, the UWB communication unit includes a UWB transmitter and a target UWB receiver, one of which is configured on the bicycle and the smart terminal.

[0015] Furthermore, the control signals are sent to the motor via wireless transmission or serial communication.

[0016] Furthermore, the control unit calculates the relative distance between the UWB transmitter and the UWB receiver using a TOF algorithm or a TDOA algorithm.

[0017] Furthermore, the TOF algorithm or TDOA algorithm calculates the relative distance between the UWB transmitter and the UWB receiver based on the transmission time of the UWB pulse signal and the speed of light.

[0018] Furthermore, after the motor performs the unlocking or locking operation, it sends a feedback signal of the operation result to the smart terminal.

[0019] Furthermore, the bicycle electronic lock device also includes a power module.

[0020] Furthermore, the power module includes a solar cell and a lithium battery.

[0021] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects:

[0022] 1. This invention utilizes UWB technology to achieve centimeter-level or even millimeter-level positioning accuracy, enabling precise identification of the relative position of the user and the bicycle. This high-precision positioning significantly improves system security and effectively prevents unauthorized unlocking and theft. Due to the short pulse and low-power characteristics of UWB signals, they are difficult to detect and intercept, providing an additional security layer for the electronic lock control system and enhancing overall system security.

[0023] 2. The control unit of this utility model calculates the relative distance between the UWB transmitter and the UWB receiver using the TOF (Time of Flight) algorithm or the TDOA (Time Difference of Arrival) algorithm. These algorithms provide high-precision ranging results, thereby ensuring the accuracy of lock control.

[0024] 3. The UWB communication unit of this invention transmits and receives pulse signals with arbitrary pulse widths between 0.1ns and 1.5ns. This extremely short pulse width enables the UWB signal to have extremely high time resolution, thereby enabling precise measurement of signal transmission time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0026] Figure 1 This is a circuit module structure diagram of this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the UWB communication unit of this utility model.

[0029] Figure label:

[0030] In the diagram, 1. Locking tongue; 2. Motor; 10. UWB communication unit; 110. UWB transmitter; 120. UWB receiver; 130. UWB pulse signal; 20. Control unit; 210. Actuator; 30. Power module. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0036] Please see Figure 1 , Figure 2 This utility model discloses an electronic lock device for bicycles based on UWB technology. The device is installed behind the bicycle seat. Specifically, the device includes a main body and a lock switch module. The main body is equipped with a latch 1 and a motor 2 that drives the latch to extend and retract. The lock switch module includes a UWB communication unit 10 and a control unit 20. The UWB communication unit 10 is used to transmit / receive UWB pulse signals 130 and measure the transmission time of the UWB pulse signals 130. The control unit 20 is used to calculate the relative distance between the electronic lock device and the smart terminal based on the transmission time and compare the calculated relative distance with a preset unlocking distance to generate a control signal for controlling the lock switch based on the comparison result. The control unit 20 is configured to transmit the control signal to the motor 2, thereby actuating the latch 1 to perform unlocking or locking operations.

[0037] It is worth noting that the bicycle electronic lock device based on Ultra-Wideband (UWB) technology proposed in this invention applies UWB communication technology to the bicycle electronic lock. Utilizing the high-precision ranging characteristics of UWB signals, it achieves accurate measurement of the distance between a smart terminal (such as a mobile phone or smartwatch) and the electronic lock device. The UWB communication unit 10 within the device is responsible for transmitting and receiving UWB pulse signals 130 and measuring the signal transmission time. The control unit 20 uses this time data to calculate the relative distance between the smart terminal and the electronic lock device through a specific algorithm, achieving intelligent lock control. This device calculates the relative distance between the electronic lock device and the smart terminal by accurately measuring the transmission time of the UWB pulse signal 130, and automatically performs unlocking or locking operations according to the preset unlocking distance. Due to the extremely high time resolution and anti-interference capability of UWB signals, this electronic lock device exhibits high accuracy and stability in distance measurement.

[0038] Please see Figure 3 The UWB communication unit 10 includes a UWB transmitter 110 and a target UWB receiver 120, one of which is selectively configured on the bicycle and the smart terminal. It should be noted that the smart terminal in this embodiment is a user-carried terminal device used to communicate with the electronic lock on the bicycle; this smart terminal can be a smartphone, smartwatch, etc. It is important to note that the bicycle and the smart terminal can function as both the UWB transmitter 110 and the UWB receiver 120 to enable communication between the user and the electronic lock, and to calculate the distance between the user and the electronic lock based on the communication information. The UWB communication unit 10 communicates with the user's smart terminal by transmitting or receiving UWB communication signals. Furthermore, the UWB communication signal is an intermittent pulse signal, wherein the intermittent pulse includes pulses with arbitrary operating pulse widths from 0.1 ns to 1.5 ns.

[0039] Furthermore, the control signals are sent to the motor 2 via methods such as wireless transmission and serial communication. The control unit 20 calculates the relative distance between the UWB transmitter 110 and the UWB receiver 120 using a TOF algorithm or a TDOA algorithm. Specifically, the TOF algorithm or TDOA algorithm calculates the relative distance between the UWB transmitter 110 and the UWB receiver 120 based on the transmission time of the UWB pulse signal 130 and the speed of light.

[0040] The control unit 20 includes an actuator 210, which has a sleep state when no control signal is received and a wake-up state when the control signal is received. Specifically, the actuator 210 is activated after receiving the control signal, and in the locking / unlocking operation, the actuator 210 performs the locking / unlocking operation on the electronic lock installed on the bicycle. Furthermore, the control unit 20 can also monitor the action of the actuator and the state of the lock; after the actuator 210 controls the motor to perform the unlocking or locking operation, it sends a feedback signal of the operation result to the smart terminal.

[0041] Furthermore, the bicycle electronic lock device of this utility model also includes a power module 30, which is used to supply power to the entire control system. The power source of the power module 30 includes, but is not limited to, solar energy and lithium batteries.

[0042] The specific method of using this utility model is as follows:

[0043] (1) UWB communication is achieved through UWB communication unit 10: UWB communication unit transmits / receives UWB pulse signal 130 and measures the transmission time of the UWB pulse signal 130;

[0044] (2) The control unit 20 calculates the relative distance between the bicycle and the UWB terminal device based on the transmission time, compares the distance with the preset unlocking distance, and generates a control signal based on the comparison result;

[0045] (3) The control unit 20 transmits the control signal to the actuator 210, which controls the motor and thereby actuates the latch 1 to perform unlocking or locking operations.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bicycle electronic lock device based on UWB technology, installed behind the bicycle seat, comprising a main body and a lock / switch module, wherein the main body contains a latch and a motor for driving the latch to extend and retract, characterized in that, The switch / lock module includes: The UWB communication unit is used to transmit / receive UWB pulse signals and measure the transmission time of the UWB pulse signals. The control unit is used to calculate the relative distance between the electronic lock device and the smart terminal through the transmission time and compare the calculated relative distance with the preset unlocking distance, so as to generate a control signal for controlling the lock opening and closing based on the comparison result; The control unit is configured to transmit the control signal to the motor, thereby actuating the latch to perform unlocking or locking operations.

2. The bicycle electronic lock device based on UWB technology according to claim 1, characterized in that, The pulse signals transmitted and received by the UWB communication unit have arbitrary pulse widths between 0.1ns and 1.5ns.

3. The bicycle electronic lock device based on UWB technology according to claim 1, characterized in that, The control unit includes an actuator, which has a sleep state when the control signal is not received and a wake-up state when the control signal is received.

4. The bicycle electronic lock device based on UWB technology according to claim 1, characterized in that, The UWB communication unit includes a UWB transmitter and a target UWB receiver, one of which is configured on the bicycle and the smart terminal.

5. The bicycle electronic lock device based on UWB technology according to claim 1, characterized in that, The control signals are sent to the motor via wireless transmission or serial communication.

6. The bicycle electronic lock device based on UWB technology according to claim 4, characterized in that, The control unit calculates the relative distance between the UWB transmitter and the UWB receiver using either the TOF algorithm or the TDOA algorithm.

7. The bicycle electronic lock device based on UWB technology according to claim 6, characterized in that, The TOF algorithm or TDOA algorithm calculates the relative distance between the UWB transmitter and the UWB receiver based on the transmission time of the UWB pulse signal and the speed of light.

8. The bicycle electronic lock device based on UWB technology according to claim 1, characterized in that... After the motor performs an unlocking or locking operation, it sends a feedback signal of the operation result to the smart terminal.

9. The bicycle electronic lock device based on UWB technology according to claim 1, characterized in that... The bicycle electronic lock device also includes a power module.

10. The bicycle electronic lock device based on UWB technology according to claim 9, characterized in that... The power module includes a solar cell and a lithium battery.

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