CN207704518U - A kind of lock of smart bluetooth control - Google Patents

Abstract

The application discloses a car lock controlled by intelligent bluetooth, including a single-chip microcomputer, a bluetooth module, a magnet, a coil, a charging circuit, a DC-DC circuit, an electronic switch, a lithium battery, a motor, a lock lever, a sensor, a sounding device, and a metal shell; The Bluetooth module is electrically connected with the single-chip electromechanical; the coil is electrically connected with the charging circuit; the sensor is electrically connected with the single-chip electromechanical, and the sensor is a touch sensor and is installed on the handlebar; the locking lever and the motor are packaged in a metal shell, and the metal shell is fixed on the car; The axle near the lock has a slotted hole that receives the lower end of the lock bar. Compared with the prior art, the car lock of the present application is highly intelligent, and has the advantages of convenient unlocking, time-saving and labor-saving, automatic locking, etc., prolongs the working time of the lithium battery, and reduces maintenance costs.

Description

A car lock controlled by intelligent bluetooth

technical field

The present application relates to the technical field of car locks, in particular to a car lock controlled by Bluetooth.

Background technique

Under normal circumstances, every motorcycle, battery car or bicycle has a lock, which needs to be unlocked with a key before using the vehicle, and needs to be closed in time after use. Turning the car lock artificially with a key when unlocking belongs to manual operation, which is very inconvenient to operate and wastes time. The shared bicycles are unlocked by mobile phones, but now many people may forget to lock the bicycles after using the shared bicycles, resulting in the problem of continuous billing after stopping riding. The vast majority of people lost their vehicles because they forgot to lock them. In a survey of 300 people, more than 40% of them occasionally forgot to lock their bicycles. Nearly one adult often did not lock their bicycles, and 30 people had lost their bicycles. Bring property loss to people like this, or left behind the hidden danger of property loss.

The existing shared bicycle locks are powered by lithium batteries, which need to be charged frequently, which brings a burden to maintenance. If the working time of lithium batteries can be extended to reduce the frequency of charging, maintenance costs can be saved.

The following problems exist in the prior art: the intelligent degree of the car lock is not high, and it is inconvenient to operate when unlocking, which is time-consuming and laborious; the car cannot be automatically locked, and when the lock is forgotten, the vehicle may be lost and property loss may be caused; the working time of the lithium battery not long enough.

Contents of the invention

The technical problem to be solved in this application is to provide a smart bluetooth-controlled car lock, which is easy to operate when unlocking, saves time and is convenient to use; it will automatically close the lock after the vehicle is stopped, so as to avoid continuous charging of shared bicycles due to unfinished journeys, Avoid the loss of the vehicle due to forgetting to lock it, and ensure the safety of property.

The technical solution of the present application is: a smart bluetooth-controlled car lock, including a single-chip microcomputer, a bluetooth module, a magnet, a coil, a charging circuit, a DC-DC circuit, an electronic switch, a lithium battery, a motor, a lock lever, a sensor, a sounding device, metal casing; the bluetooth module is electrically connected to the single-chip electromechanical; the coil is electrically connected to the charging circuit; the charging circuit is electrically connected to the lithium battery; the lithium battery is electrically connected to the DC-DC circuit; the electronic switch is electrically connected to the motor connected, the electronic switch is electrically connected with the single-chip electromechanical; the sensor is electrically connected with the single-chip electromechanical; the sounding device is electrically connected with the single-chip electromechanical; the locking rod and the motor are packaged in a metal casing, and the metal casing is fixed on the car; The axle near the lock has a slotted hole that accommodates the lower end of the lock bar.

Preferably, the electronic switch adopts MOSFET and/or Darlington tube.

Preferably, the lower end of the locking rod is tapered.

Preferably, the vehicle lock includes a transmission rod, and the lock rod is mechanically connected to the motor shaft through the transmission rod.

Preferably, the sensor is a touch sensor and is installed on the handlebar.

The beneficial effect of the application is that the car lock is intelligent, easy to unlock, saves time and effort, automatically closes the lock, prolongs the working time of the lithium battery, and reduces the maintenance cost.

Description of drawings

The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. The accompanying drawings are used to provide a further understanding of the present application, and are used together with the embodiments of the present application to explain the present application, and do not constitute a limitation to the present application.

Fig. 1 is a schematic diagram of the working principle of the embodiment.

Fig. 2 is a schematic diagram of the single-chip microcomputer of the embodiment.

Fig. 3 is a schematic diagram of the charging circuit of the embodiment.

Fig. 4 is a schematic diagram of the connection of the motor, the electronic switch and the sound generating device of the embodiment.

Fig. 5 is a schematic diagram of the connection between the lock lever and the motor in the embodiment.

In the figure, 1. Single-chip microcomputer, 2. Bluetooth module, 3. Mobile phone, 4. Coil, 5. Charging circuit, 6. Lithium battery, 7. DC-DC circuit, 8. Sensor, 9. Sounding device, 10. Motor, 11. Electronic switch, 12. Lock lever, 13. Transmission lever, 14. Axle, 101. Motor shaft.

Detailed ways

The specific implementation manner of the present application will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these implementations are used to help the understanding of the present application, but are not intended to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below may be combined with each other as long as there is no conflict with each other.

Please refer to the accompanying drawings, the technical solution of the present application is: a car lock controlled by intelligent bluetooth, including a single-chip microcomputer, a bluetooth module, a magnet, a coil, a charging circuit, a DC-DC circuit, an electronic switch, a lithium battery, a motor, a lock bar, Sensor, sound generator, metal case.

In the embodiment, the bluetooth module is electrically connected with the single-chip electromechanical device, and the bluetooth module adopts HC05, and the HC05 module is cheap, small in size, low in power consumption, good in stability and strong in compatibility. Bluetooth modules from other manufacturers can also be used, such as the PW-01 module. If the vehicle is a private car, enter the pairing code on the mobile phone when using it for the first time, and the communication connection between the mobile phone and the car lock will be established, and the communication will be carried out automatically in subsequent uses without entering the pairing code again; if it is a shared bicycle, the mobile phone Obtain the pairing code through the network and communicate with the car lock. The single-chip microcomputer adopts STM32F103C8T6, and the single-chip microcomputer is connected with the Bluetooth module through the pins of TXD and RXD, and sends and receives data from the Bluetooth module. The single-chip microcomputer is small in size, powerful in function and low in power consumption, and is suitable for battery-powered systems. It is also possible to adopt the PIC series single-chip microcomputer produced by Microchip Company.

In the embodiment, the coil is electrically connected with the charging circuit, and the coil adopts the generator coil on the motorcycle. When the wheel rotates, it drives the magnet on the wheel to rotate, and the coil cuts the magnetic force line to generate alternating current, which is converted into direct current by the charging circuit; charging The circuit is electrically connected to the lithium battery. Four diodes are used for rectification in the charging circuit, and capacitor filtering is used. In order to prevent the lithium battery from being overcharged, the voltage regulator tube is connected in parallel with the lithium battery. When the voltage at both ends of the lithium battery exceeds 4.2V, the charging will stop.

In an embodiment, the lithium battery is electrically connected to the DC-DC circuit. The output voltage of the lithium battery cannot meet the needs of the motor and the single-chip microcomputer. The DC-DC circuit is used to change the voltage. In one embodiment, a 18650 lithium battery is used, and the capacity of a single lithium battery can be Up to 3000mAh, with the advantages of small size and good stability. The output voltage of the DC-DC circuit is 12V, which meets the requirements of the motor in the embodiment, and the DC-DC circuit adopts a switch-type voltage stabilizing circuit. In the embodiment, the operating voltage of the single-chip microcomputer is 3.6V, and the output voltage of the lithium battery fluctuates between 3.2V to 4.2V. After passing through the DC-DC circuit, the output voltage of one line is stable at 3.6V, which meets the needs of the single-chip microcomputer. The other output voltage is 12V, to meet the needs of the motor.

In the embodiment, the electronic switch adopts ULN2803, and the driving current of each channel can reach 500mA, which meets the needs of the motor. The ULN2803 has 8 channels, and each channel has a control terminal. Pulse (Pluse) signal to electronic switch.

In the embodiment, the electronic switch is electrically connected to the motor, and the motor adopts a 28BYJ-48-12V stepping motor. After the stepping motor receives specific four-way pulse signals, the rotating shaft of the motor rotates to change the sequence of the four-way pulse signals, and the motor The direction of rotation of the axis of rotation changes.

In the embodiment, the sensor is electrically connected with the single-chip electromechanical, and the sensor adopts a capacitive touch switch module based on a touch detection IC (TTP223B). The surface of the sensor is covered with a film, which can prevent rain and dust from interfering with the sensor. When the sensor receives a touch signal Output high level, output low level when there is no touch. The sensor is installed on the handlebar. When using the vehicle, the hand touches the handlebar, the sensor sends out a corresponding signal, and the single-chip microcomputer judges whether the user is using the vehicle according to the signal of the sensor. The sensor can also use a micro switch to achieve the same function.

In the embodiment, the sounding device is electrically connected with the single-chip electromechanical device, and the sounding device adopts a 3.3V active buzzer, and a triode needs to be installed to drive the buzzer. In this embodiment, the Darlington tube in the electronic switch is used to drive the buzzer , The BEEP signal sent by the microcontroller is used to control the Darlington tube. It is also possible to use voice modules such as ISD4003 combined with speakers as the sounding device, and the voice module can issue more sentences. When the hand leaves the handlebar, the sounding device will emit a sound to remind the user that the lock is about to be closed. In other cases, a corresponding prompt tone can also be issued, which provides convenience, flexibility and intelligence for the user.

In an embodiment, the lock lever is mechanically connected to the motor shaft through a transmission rod, and the lock lever moves up and down during the rotation of the motor shaft. When the motor rotates forward, the rotating shaft releases the locking rod through the transmission rod, and the locking rod moves downward under the action of gravity and inserts it into the slot on the axle. Pull up and out. The diameter of the axle is 24mm, the diameter of the lock rod is 7mm, the lower end of the lock rod is tapered, the taper is 1:2, and the lock rod is made of medium carbon cast steel ZG310-570.

In the embodiment, the locking rod, the transmission rod and the motor are packaged in a metal casing, and the metal casing is made of medium carbon cast steel ZG310-570, which has certain toughness and plasticity, high strength and hardness, wear resistance and corrosion resistance, and effectively protects This ensures that the lock bar, the transmission bar and the motor are not damaged, and also avoids the problem of artificially turning the lock bar. The metal shell is fixed on the frame near the car lock, and it is connected by threads. Glue is applied on the threaded fastening between the screw and the screw hole. After installation, it cannot be disassembled. The parts can only be replaced by destroying the mechanical structure. The glue is SONLOK, which cannot be disassembled. Permanent thread locking sealant, the model is 3270, which has the functions of waterproof, oilproof, corrosion resistance and shock resistance. When there is a failure inside the lock, it is necessary to manually destroy the metal shell for maintenance.

In the embodiment, there is a slot on the axle close to the car lock, and the slot adopts a through-hole structure to prevent long-term outdoor deposition of dirt from blocking the slot. The diameter of the slot is 6.5 mm, and the slot can accommodate the lower end of the lock rod.

The electronic switch adopts MOSFET and/or Darlington tube, in the embodiment, adopts ULN2803 Darlington tube array.

If the vehicle is a shared bicycle, the mobile phone obtains the pairing code through the network, and communicates with the car lock to open the car lock. If the vehicle is a private car, the pairing code is recorded on the mobile phone after the first pairing. When the user uses it again and the mobile phone approaches the vehicle, the Bluetooth module on the car lock receives the correct Bluetooth signal sent by the mobile phone, and the microcontroller will drive the motor to lift the lock. lever so that the lock lever clears the slot in the axle to unlock the lock.

When the user stops using the vehicle, the hand leaves the handlebar, and the touch sensor feeds back a signal to the MCU. If the MCU continues to receive the signal that the hand leaves the handlebar, and the MCU does not receive the correct Bluetooth unlock signal from the mobile phone, it drives the motor to release the lock lever. , the lock rod falls on the axle, if the slot hole is just below the lock rod, the lower end of the lock rod will fall into the slot hole, if the slot hole is not under the lock rod, as long as the wheel turns, it will drive the axle to rotate, the slot hole on the axle always It will turn under the lock bar, and the lower end of the lock bar will also drop into the slot, thereby locking the wheel.

In another embodiment, in the process of using the vehicle, the Bluetooth of the mobile phone is always on. After the user stops using the vehicle, when the user's mobile phone is far enough away from the vehicle, the car lock cannot communicate with the Bluetooth of the mobile phone, and the single-chip microcomputer will automatically control The car lock is closed.

The user unlocks and closes the fully automatic operation, which is simple and convenient, saves time and effort, and will not lose the car due to forgetting to lock it, avoiding continuous billing of shared bicycles due to unfinished trips, reducing vehicle loss and ensuring property safety.

During the riding process, the magnet is fixed on the wheel, the wheel rotates to drive the magnet to rotate, and the coil is fixed on the frame. As the wheel rotates, the magnetic force line cut by the coil generates an alternating current to charge the lithium battery through the charging circuit, solving the problem of vehicle Lock lithium battery battery life problem, reduce maintenance costs.

Preferred embodiments of the application are given in the description of the application and the accompanying drawings. However, the above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still understand the foregoing The technical solutions described in the embodiments are modified, or equivalent replacements are made to some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (5)

1. a kind of lock of smart bluetooth control, it is characterized in that：Including microcontroller, bluetooth module, magnet, coil, charging circuit, DC-DC circuit, electronic switch, lithium battery, motor, locking bar, sensor, sound-producing device, metal shell；The bluetooth module and list Piece mechatronics；The coil is electrically connected with charging circuit；The charging circuit is connect with lithium battery；The lithium battery with DC-DC circuit is electrically connected；The electronic switch is electrically connected with motor；The electronic switch and monolithic mechatronics；The sensing Device and monolithic mechatronics；The sound-producing device and monolithic mechatronics；The locking bar is encapsulated in motor in metal shell, institute Metal shell is stated to fix onboard；Grooved hole on close axle, slot can accommodate the lower end of locking bar with lock.

2. a kind of lock of smart bluetooth control according to claim 1, it is characterized in that：The electronic switch uses MOSFET and or Darlington transistor.

3. a kind of lock of smart bluetooth control according to claim 1, it is characterized in that：The locking bar lower end is cone Shape.

4. a kind of lock of smart bluetooth control according to claim 1, it is characterized in that：Lock includes drive link, lock Bar is mechanically connected by drive link and machine shaft.

5. a kind of lock of smart bluetooth control according to claim 1, it is characterized in that：The sensor is to touch to pass Sensor is simultaneously mounted on handlebar.