Bike lock device

Abstract

To provide a bike locking device that determines the lock position by a motor stall mechanism. [Solution] A bike lock device 1 receives a locking signal or an unlocking signal transmitted by a remote control 2. The bike lock device comprises a lock body 11 and a first control circuit board 13. The lock body is electrically connected to a motor 12. The motor controls the lock body to lock or unlock. The first control circuit board is electrically connected to the motor and has a controller, a current sensor and a signal receiver. The current sensor is electrically connected to the controller and detects the current of the motor. The signal receiver is electrically connected to the controller and receives the locking signal or the unlocking signal. When the signal receiver receives the locking signal or the unlocking signal, the controller transmits a motor drive signal to the motor, causing the motor to lock or unlock the lock body.

Description

[Technical field]

[0001] The present invention relates to a bike locking device, and more particularly to a bike locking device that uses a motor stall mechanism to determine the lock position. [Background technology]

[0002] Keyless is a vehicle entry and start system, and is also called a keyless entry system or a keyless start system. These systems use wireless technology to allow drivers to unlock, lock, start, shut down and perform other operations on their vehicles via an electronic key or smart device (e.g., a smartphone or remote control) rather than using a traditional metal key.

[0003] Conventional lock mechanisms for locking and unlocking include the following mechanisms (1) and (2).

[0004] (1) The first mechanism: After the user is successfully authenticated, he or she manually turns the lock to the unlocked position (KEY ON), which then powers up the entire car, lights up the instrument panel, and allows the engine to start. (2) The second mechanism: After the user is successfully authenticated, the lock is automatically unlocked, the whole car is powered up, the instrument panel lights up, and the engine can be started. In this type of system, the lock lever is moved in the LOCK or UNLOCK direction by a motor, and the unlocked or locked position is automatically determined. After the position is detected, the motor stops and the instrument panel lights up.

[0005] There were two methods for detecting the lock position: (1) and (2) below. (1) Two microswitches are used to detect the lock position, and the lock is driven by a motor, with one microswitch each at the UNLOCK and LOCK positions. When the lock hits the first microswitch, it is determined to be in the UNLOCK position, and when the lock hits the second microswitch, it is determined to be in the LOCK position. (2) The lock position is detected by two Hall sensors. When the magnet on the lock approaches the first Hall sensor, it is determined to be in the UNLOCK position. Conversely, when the magnet approaches the second Hall sensor, it is determined to be in the LOCK position.

[0006] However, the above two methods of detecting the positions of locks require high hardware costs. Since the present invention can determine the lock position through the motor stall mechanism, there is no need to use additional hardware components, making the present invention an optimal solution. Summary of the Invention [Problem to be solved by the invention]

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a bike locking device that determines the lock position by a motor stall mechanism. [Means for solving the problem]

[0008] In order to solve the above problems, according to a first aspect of the present invention, there is provided a bike lock device that receives a locking or unlocking signal transmitted by a remote controller, the bike lock device comprising: a lock body and a first control circuit board, the lock body electrically connected to a motor, the motor controls the lock body to lock or unlock, the first control circuit board electrically connected to the motor and has a controller, a current sensor and a signal receiver, the current sensor electrically connected to the controller and detects the current of the motor, the signal receiver electrically connected to the controller and receives the locking or unlocking signal, when the signal receiver receives the locking or unlocking signal, the controller transmits a motor drive signal to the motor to lock or unlock the lock body by the motor, the controller controls the current sensor, continues to detect the current of the motor, and detects a stall current value by the current sensor, and when the controller transmits a motor shutdown signal to the motor, the motor operation is stopped.

[0009] When the controller sends a motor start signal to the motor, the motor operates at its maximum rotation speed, and after a certain time has passed, the rotation speed of the motor decreases to a stable rotation speed, and the controller controls the current sensor to continue detecting the current of the motor to obtain a stable current value, and when the lock body is fixed in the locked or unlocked position, a stall current value is obtained, and it is preferable that the stall current value is higher than the stable current value.

[0010] Preferably, when the lock body is fixed in the locked or unlocked position, the lock body is in a stalled state, and a stall current value obtained in the stalled state is higher than a steady current value.

[0011] It is preferable that at least one light-emitting element is provided on the first control circuit board, the light-emitting element is electrically connected to the controller, and when the current sensor detects a stall current value, the controller causes the light-emitting element to emit light.

[0012] It is preferable that a power supply device is connected to the bike lock device to supply power necessary for the operation of the bike lock device.

[0013] The controller preferably stores the current position as a locked or unlocked position when the current sensor detects a stall current value. Effect of the Invention

[0014] The bike lock device of the present invention can determine the lock position by the motor stall mechanism. [Brief description of the drawings]

[0015] [Figure 1] 1 is a block diagram showing a bike lock device according to an embodiment of the present invention; FIG. [Diagram 2] FIG. 2 is a block diagram showing a first control circuit board of the bike lock device according to the embodiment of the present invention. [Figure 3A] 1 is a block diagram showing a state in which a bike lock device according to an embodiment of the present invention is connected to a power supply device; FIG. [Figure 3B] 1 is a block diagram showing a power supply device of a bike lock device according to an embodiment of the present invention; FIG. [Figure 4] 4 is a graph showing a current waveform detected by a bike lock device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Other technical contents, features and effects of the present invention will become apparent from the following detailed description of preferred embodiments with reference to the drawings.

[0017] Please refer to Figure 1. FIG. 1 is a block diagram showing a bike lock device according to an embodiment of the present invention. As shown in FIG. 1, a bike lock device 1 receives a lock signal or an unlock signal transmitted by a remote control 2. The bike lock device includes a lock body 11, a motor 12, and a first control circuit board 13. The first control circuit board 13 receives a lock signal or an unlock signal.

[0018] The lock body 11 is electrically connected to the motor 12. The motor 12 controls the lock body 11 to lock or unlock the door.

[0019] The lock body 11 of this embodiment is a lock lever unit for a vehicle. In actual operation, the motor 12 controls the vehicle lock lever unit to move it toward the locked or unlocked position. The lock body 11 is a locking member used in a general wireless vehicle locking / unlocking system, and will not be described in detail here.

[0020] The remote control 2 is a car remote control that transmits a lock signal or an unlock signal when pressed.

[0021] Please refer to Figure 2. As shown in FIG. 2, the first control circuit board 13 includes a controller 131, a memory 132, a current sensor 133, a signal receiver 134, and a light emitter 135. The controller 131 is electrically connected to the memory 132 , the current sensor 133 , the signal receiver 134 and the light emitter 135 .

[0022] The controller 131 is an electronic component such as a processor or a micro control unit (MCU).

[0023] The memory 132 is a memory component such as an EEPROM.

[0024] The current sensor 133 is an electronic component that detects the current value of the motor 12 .

[0025] The signal receiver 134 is an electronic component or circuit member that receives a lock or unlock signal.

[0026] The light emitter 135 is illuminated by the controller 131 when the current sensor 133 detects a stall current. The light emitter 135 is an electronic component such as a light emitting diode (LED).

[0027] Please refer to Figure 3A. FIG. 3A is a block diagram illustrating a state in which a bike lock device according to an embodiment of the present invention is connected to a power supply device. As shown in FIG. 3A, a power supply device 3 that supplies power necessary for the operation of the bike lock device 1 is connected to the bike lock device 1.

[0028] Please refer to Figure 3B. FIG. 3B is a block diagram showing a power supply device of a bike lock device according to an embodiment of the present invention. As shown in FIG. 3B, the power supply device 3 includes at least a battery 31, a second control circuit board 32, and a signal communication device 33. The second control circuit board 32 is electrically connected to the battery 31 and the signal communication device 33 .

[0029] The battery 31 (eg, 72 V) is electrically connected to the first control circuit board 13.

[0030] The second control circuit board 32 is electrically connected to the battery 31, converts AC power to DC power (for example, from 72 V to 12 V), and supplies the DC power to the second control circuit board 32.

[0031] The signal communication device 33 is connected to a plurality of ECUs (Electronic Control Units) to receive signals, and transmits signals to the second control circuit board 32 via the CAN BUS interface. Here, ECU is an abbreviation of Electronic Control Unit, which is an embedded system that controls the electrical system, electronic system, and automobile subsystems in the electronic system of an automobile.

[0032] When actually operating, when the signal receiver 134 receives the lock signal or unlock signal transmitted by the remote control 2, the controller 131 transmits a motor drive signal to the motor 12, causing the motor 12 to lock or unlock the lock body 11. The controller 131 controls the current sensor 133 to continuously detect the current of the motor 12 and the current sensor 133 detects the stall current value. When the controller 131 sends a motor shutdown signal to the motor 12, the operation of the motor 12 is stopped.

[0033] When the controller 131 sends a motor start signal to the motor 12, the motor 12 operates at the maximum rotation speed (100%), and after a certain time has passed, the rotation speed of the motor 12 drops to a stable rotation speed (e.g., 85%). The controller 131 controls the current sensor 133 to continue detecting the current of the motor 12 to obtain a stable current value, and when the lock body 11 is fixed in the locked or unlocked position, a stall current value is obtained. This stall current value is higher than the stable current value.

[0034] When the lock body 11 is fixed in the locked or unlocked position, the lock body 11 is in a stalled state, and the stall current value obtained in this stalled state is higher than the stable current value.

[0035] After the controller 131 sends a motor start signal to the motor 12, the motor 12 is operated at the maximum rotation speed (100%) to overcome the static friction force, and the rotation speed of the motor 12 is reduced to a stable rotation speed after a start-up time to prevent the lock body 11 from rebounding under a stall condition.

[0036] The motor stall described in this embodiment refers to a situation in which the motor still outputs torque even when the rotation speed of the motor is 0 rotations, and the current during motor stall (referred to as stall current) is higher than during normal operation.

[0037] Please refer to Figure 4. As shown in Figure 4, in section A, the static friction force is overcome, and within a first predetermined time (e.g., 20 milliseconds), the motor 12 is pushed with the thrust of the maximum rotation speed, and after 20 milliseconds (section B), the PWM (Pulse Width Modulation) duty is changed to a stable operation rotation speed (e.g., 85%). The thrust of the stable operation prevents the mechanism from rebounding when stalled.

[0038] The above-mentioned PWM duty drives a motor with a PWM signal, and the magnitude of the duty percentage is related to the rotation speed of the motor.

[0039] After 20 milliseconds (section B), the current continues to be sensed (sensing once every millisecond). Section B is the steady current section, this time pushing the lock body 11 towards the locked or unlocked position.

[0040] Upon entering section C, the current suddenly rises and remains at a value higher than the stable current value for a certain period of time (e.g., 10 milliseconds), which is determined to be the stall current value, and the controller 131 sends a motor shutdown signal to the motor 12 to stop operation of the motor 12.

[0041] After determining the stall current value, the controller 131 stores in the memory 132 whether the state at that point is already locked (locked position, for example, stored as 0x55) or unlocked (unlocked position, for example, stored as 0xAA).

[0042] The present invention determines the locked or unlocked state by storing the locked or unlocked position.

[0043] The value of "Pos_Valid" is stored in the memory 132, but since the initial value is an invalid value, when unlocking with the first operation, the controller 131 controls the lock body 11 to first operate in the opposite direction (locking direction) for 200 milliseconds. Here, 200 milliseconds means that the unlocking operation time is normally less than about 100 milliseconds, and the 200 milliseconds is to ensure that the lock is in the locked position, and then to determine whether the position is correct by using a motor stall method.

[0044] On the other hand, when the first operation is to lock, the controller 131 controls the lock body 11 to first move in the opposite direction (unlocking direction).

[0045] The value of "Pos_Valid" set by this invention is expressed in hexadecimal (H) as follows: (1) 0x55 is the locked position. (2) 0xAA is the unlocked position. (3) 0xFF means the position is unknown (invalid position).

[0046] When the controller 131 receives an unlock signal, it first judges whether the previously stored position is a locked position or an unlocked position by the following processing methods (1) to (3). (1) If the previous position is unknown (0xFF), move the lock body 11 in the opposite direction (locking direction) to move the lock body 11 in the unlocking direction, detect the stall current value, determine that the unlocked position has already been reached, save the current position as the unlocked position, and complete the unlocked state. (2) If the previous position is the unlocked position (0xAA), the controller 131 does not need to control the motor operation and saves the current position as the unlocked position. (3) If the previous position was the locked position (0x55), the controller 131 moves the lock body 11 in the unlocking direction, detects the stall current value, determines that the unlocked position has already been reached, saves the current position as the unlocked position, and completes the unlocked state. If the unlocking fails, the LED flashes to warn, and saves the current position as an incorrect position (0xFF).

[0047] When the controller 131 receives a lock signal, it first judges whether the previously stored position is a locked position or an unlocked position by the following processing methods (1) to (3). (1) If the previous position is unknown (0xFF), the lock body 11 is controlled in the opposite direction (unlocking direction) and then moved in the locking direction. The stall current value is detected and it is determined that the locked position has already been reached. The current position is saved as the locked position, and the locked state is completed. (2) If the previous position is the locked position (0x55), the controller 131 does not need to control the motor operation and saves the current position as the locked position. (3) If the previous position is the unlocked position (0xAA), the controller 131 controls the lock body 11 in the locking direction, detects the stall current value, determines that the locking position has already been reached, saves the current position as the locked position, and completes the locking state. If the locking fails, the LED flashes to warn, and saves the current position as an incorrect position (0xFF).

[0048] The conditions for lock failure / lock failure mentioned in paragraph numbers 0044 and 0045 are as follows (1) and (2). (1) When the motor overruns, for example when a specified motor operation time is exceeded (for example, 500 milliseconds). (2) When the motor operating current is abnormal, for example, when the current exceeds the standard current value (for example, when the current is excessive and exceeds the threshold value of 5A).

[0049] The bike lock device of the present invention has the following advantages (1) and (2) compared with the prior art. (1) The motor stall mechanism determines the lock position, eliminating the need for separate hardware. (2) By storing the locked or unlocked position, the controller can assist in how to control the direction of movement of the unlocking body when it receives a locking or unlocking signal, and can reliably confirm whether the locked or unlocked position has already been reached via the motor stall mechanism.

[0050] For the understanding of those skilled in the art, the preferred embodiments of the present invention have been disclosed above, but they are not intended to limit the present invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention, and the scope of the claims of the present invention should be broadly interpreted to include such changes and modifications. [Explanation of symbols]

[0051] 1 Bike lock device 2 Remote Control 3 Power supply device 11 Lock body 12 Motor 13 First control circuit board 31 Battery 32 Second control circuit board 33 Signal communication device 131 Controller 132 Memory 133 Current Sensor 134 Signal Receiver 135 Luminous object

Claims

1. A bike lock device that receives a lock signal or an unlock signal transmitted by a remote control, The bike lock device includes a lock body and a first control circuit board. The lock body is electrically connected to a motor, and the motor controls the lock body to lock or unlock the door. the first control circuit board is electrically connected to the motor and includes a controller, a current sensor, and a signal receiver; the current sensor is electrically connected to the controller and detects a current of the motor; the signal receiver is electrically connected to the controller and receives a lock signal or an unlock signal; When the signal receiver receives a lock signal or an unlock signal, the controller sends a motor drive signal to the motor, causing the motor to lock or unlock the lock body, the controller controls the current sensor to continuously detect the current of the motor and detect a stall current value by the current sensor, and when the controller sends a motor shutdown signal to the motor, the controller stops the operation of the motor.

2. When the controller sends a motor start signal to the motor, the motor operates at a maximum rotation speed, and after a certain time has passed, the rotation speed of the motor drops to a stable rotation speed, and the controller controls the current sensor to continuously detect the current of the motor to obtain a stable current value, and when the lock body is fixed in the locked or unlocked position, a stall current value is obtained; 2. The bike lock device according to claim 1, wherein the stall current value is higher than the steady current value.

3. 3. The bike lock device according to claim 2, characterized in that when the lock body is fixed in the locked position or the unlocked position, the lock body is in a stalled state, and a stall current value obtained in the stalled state is higher than a stable current value.

4. At least one light emitter is provided on the first control circuit board; the light emitter is electrically connected to the controller; 2. The bike lock device according to claim 1, wherein the controller causes the light emitter to emit light when the current sensor detects a stall current value.

5. 2. The bike lock device according to claim 1, further comprising a power supply device connected to the bike lock device for supplying power necessary for the operation of the bike lock device.

6. 2. The bike lock device according to claim 1, wherein the controller stores the current position as a locked or unlocked position when the current sensor detects a stall current value.

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