CN108830976B

CN108830976B - Electronic door lock control circuit

Info

Publication number: CN108830976B
Application number: CN201810412750.8A
Authority: CN
Inventors: 汪建文
Original assignee: Wuhu Lanren Intelligent Technology Co ltd
Current assignee: Wuhu Lanren Intelligent Technology Co ltd
Priority date: 2018-05-03
Filing date: 2018-05-03
Publication date: 2021-07-20
Anticipated expiration: 2038-05-03
Also published as: CN108830976A

Abstract

The invention relates to an electronic door lock control circuit which comprises a key end circuit and a lock core end circuit, wherein the key end circuit comprises a key main control module, a storage module, a prompt module, a wireless module and a single-wire transmission module, the storage module, the prompt module and the wireless module are connected with the key main control module and used for storing data passwords and prompting a user to send and receive control data wirelessly, the single-wire transmission module is connected with the key main control module and used for transmitting power and signals, the lock core end circuit comprises a single-wire receiving module and a lock core main control module, and the single-wire receiving module is connected with the lock core main control module and used for receiving the power and the signals and controlling a lock core motor. The invention simplifies the connection between the lock hole and the key on the mechanical structure through the simplification of the circuit, can conveniently manage a large number of lock cylinders by using one key, and has high unlocking speed and simple unlocking process.

Description

Electronic door lock control circuit

Technical Field

The invention relates to the field of electronic door locks, in particular to an electronic door lock control circuit.

Background

The traditional door lock structure is in a one-to-one matching form of a key and lock cylinders, one lock can be unlocked by one key, and under the condition that a large number of cabinet locks and door locks need to be managed in factory buildings, rental houses, file rooms and the like, a large number of keys need to be equipped to correspond to the lock cylinders, so that management is inconvenient.

The electronic door lock has the advantages that a plurality of locks can be opened by setting the passwords for the lock cylinders by one key, the centralized management of a large number of lock cylinders is facilitated by managing the authority, pairing, operation, passwords and the like through software, and the electronic door lock can be opened at any time without being equipped with a large number of keys.

Disclosure of Invention

The invention aims to provide an electronic door lock control circuit which is convenient for centralized management of a large number of locks.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides an electronic door lock control circuit, includes key end circuit and lock core end circuit, and key end circuit includes key host system, storage module, prompt module, wireless module, single line transmission module, storage module, prompt module, wireless module with key host system links to each other and is used for storage data password, suggestion user and wireless transmission receiving control data, single line transmission module with key host system links to each other and is used for transmitting power and signal, lock core end circuit includes single line receiving module, lock core host system, single line receiving module with lock core host system links to each other and is used for receiving power, signal and control lock core motor.

The single-wire transmission module comprises a seventh resistor, a tenth resistor, an eleventh resistor, a third triode and a transmitting terminal, wherein one end of the tenth resistor is connected with an electric power enabling end ENVCC of the key main control module, the other end of the tenth resistor is connected with a base of the third triode, an emitter of the third triode is connected with one end of the eleventh resistor, the eleventh resistor is far away from one end of the emitter of the third triode and is connected with a base of the third triode, a collector of the third triode is connected with 1 pin of the transmitting terminal, the transmitting terminal is grounded through 2 pins, and the transmitting terminal is connected with 1 pin of the transmitting terminal after the seventh resistor and is connected with a signal transmitting pin of the key main control module to transmit a control signal VINRx.

The single wire receiving module comprises a nineteenth resistor, one end of the nineteenth resistor is connected with the motor control end ENMOT of the lock cylinder main control module, the other end of the nineteenth resistor is connected with the base of a fourth triode, the collector of the fourth triode is connected with the 1 pin of a motor, the 2 pins of the motor are grounded, the 2 pins of the motor are connected with the anode of a fourth diode, the 1 pin of the motor is connected with the cathode of a fourth diode, the emitter of the fourth triode is connected with one end of an eighteenth resistor, the other end of the eighteenth resistor is connected with the anode of a fifth diode, the cathode of the fifth diode is connected with the anode of a twenty-fifth capacitor, the anode of the twenty-fifth capacitor provides a power supply VCCRX at the lock cylinder end, and one end, far away from the base of the fourth triode, of the eighteenth resistor is connected with the 1 pin of a receiving terminal, the 2-pin of the receiving terminal is grounded.

The transmitting terminal and the receiving terminal respectively comprise an inner contact and an outer contact, the inner contact transmits power and signals after being contacted, and the outer contact enables the key circuit and the lock cylinder circuit to be grounded.

The seventh resistor is a 0 ohm resistor.

The twenty-fifth capacitor is an electrolytic capacitor or a tantalum capacitor of 6V100uf, and the third triode and the fourth triode are PNP type triodes.

The invention has the beneficial effects that:

the invention only needs two wires to transmit power and signals simultaneously, thus simplifying the pairing structure of the key and the lock hole for mechanical unlocking of the door lock; theoretically one key can support unlocking an unlimited number of locks; the motor is used for unlocking the lock cylinder, so that the speed is higher; managing a software system and carrying out centralized configuration.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a first partial circuit diagram of the key tip of the present invention;

FIG. 3 is a second partial circuit diagram of the key tip of the present invention;

fig. 4 is a diagram of a lock core end circuit of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

Module connection diagram as shown in fig. 1:

a control circuit of an electronic door lock comprises a key end circuit and a lock core end circuit, wherein the key end circuit comprises a key main control module 1, a storage module 2, a prompt module 3, a wireless module 4 and a single-wire transmission module 5, and the storage module 2, the prompt module 3 and the wireless module 4 are connected with the key main control module 1;

the storage module 2 is used for storing data passwords, key information, lockset information, authority, control strategies and the like, and the storage module 2 has the characteristic of power-down storage;

the prompting module 3 is used for prompting acousto-optic warning in operations such as successful unlocking, successful pairing and successful reading of a user;

the wireless module 4 is used for wirelessly sending and receiving control data;

the single-wire transmission module 5 is connected with the key master control module 1 and used for transmitting power and signals, the single-wire transmission module 5 has two control lines in total, one control line is used for transmitting a power VCC and a signal DATA, and the other control line is used for transmitting a ground.

The lock core end circuit comprises a single wire receiving module 6 and a lock core main control module 7, wherein the single wire receiving module 6 is connected with the lock core main control module 7 and used for receiving power, signals and controlling a lock core motor, the lock core structure is very small and exquisite, the lock core is driven by a small motor to rotate to unlock, and therefore a matched circuit is designed to be simplified as far as possible, meanwhile, the lock core does not have a power source, and the power source is accessed from a key when the lock is unlocked by the key.

Key end circuitry as shown in fig. 2 and 3:

the memory module 2 comprises an EEPROM memory chip AT24C32, the AT24C32 is a power-down memory chip with a capacity of 32KB, if calculated according to the password of a group of lock cylinders 20B, one thousand groups of passwords can be stored, which is enough to meet general requirements, the memory chip can be replaced by a chip with a larger capacity, and the memory module 2 is connected with the key master control module 1 through an IIC bus.

The prompt module 3 comprises a red-green two-color lamp RGLED and a Buzzer Buzzer, when the key is in a charging state, the red-green two-color lamp RGLED displays that the red lamp is normally on, and displays that the green lamp is normally on after the key is fully charged, and when the unlocking of the lock cylinder is successful, the Buzzer Buzzer is connected with a Buzzer control pin of the key main control module 1, and sounds to indicate that the unlocking is successful, and if an alarm is given, the unlocking is failed.

Wireless module 4 adopts bluetooth module JDY-08, bluetooth module pass through the UART serial ports with key host system 1 links to each other and establishes wireless serial ports passageway, can connect cell-phone APP or computer customer end, reads and sets up in the key about control parameters such as user's permission, lock core name, lock core password.

The single-wire transmission module 5 includes a seventh resistor R7, a tenth resistor R10, an eleventh resistor R11, a third triode Q3, and a transmitting terminal J1, wherein one end of the tenth resistor R10 is connected to the power enable end ENVCC of the key master control module 1, the other end of the tenth resistor R10 is connected to the base of the third triode Q3, the emitter of the third triode Q3 is connected to one end of the eleventh resistor R11, one end of the eleventh resistor R11, which is far away from the emitter of the third triode Q3, is connected to the base of the third triode Q3, the third triode Q3 is a PNP triode, when the power enable end ENVCC signal level is low, the third triode Q3 is turned on, the power supply of the transmitting terminal J1 and the signal contact pin 1 are then turned on to the power supply VCC, and a power supply is transmitted to a circuit;

the collector of the third triode Q3 is connected with pin 1 of the transmitting terminal J1, and pin 2 of the transmitting terminal J1 is grounded;

the pin 1 of the transmitting terminal J1 is connected to the seventh resistor R7 and then connected to a signal transmitting pin of the key main control module 1 to transmit a control signal VINRX, the seventh resistor R7 is a 0-ohm resistor and is used for reducing interference of circuit switching, when the power enable end ENVCC signal is high, the third triode Q3 is turned off, and at this time, the circuit is used for transmitting a control signal DATA.

The single-wire transmission module 5 corresponds to the single-wire receiving module 6, and the two are in contact connection through a contact between a lock hole and a key, as shown in a lock core end circuit diagram of fig. 4:

the single-wire receiving module 6 comprises a nineteenth resistor R19, one end of the nineteenth resistor R19 is connected to the motor control end ENMOT of the lock cylinder main control module 7, the other end of the nineteenth resistor R19 is connected to the base of a fourth triode Q4, the collector of the fourth triode Q4 is connected to pin 1 of a motor M1, pin 2 of the motor M1 is grounded, pin 2 of the motor M1 is connected to the anode of a fourth diode D4, pin 1 of the motor M1 is connected to the cathode of a fourth diode D4, the fourth diode D4 is used for avoiding the circuit affected by the reverse current at the moment of power failure of the motor, the fourth triode D4 is a PNP-type triode for controlling the on-off of the motor M1, and the lock cylinder structure is driven by the motor M1 to complete unlocking;

the emitter of the fourth triode Q4 is connected with one end of an eighteenth resistor R18, the other end of the eighteenth resistor R18 is connected with the anode of a fifth diode D5, the cathode of the fifth diode D5 is connected with the anode of a twenty-fifth capacitor C25, the anode of the twenty-fifth capacitor C25 provides a power supply VCCRX at the lock core end, the twenty-fifth capacitor C25 is an electrolytic capacitor or a tantalum capacitor of 6V100uf, one end, away from the base of the fourth triode Q4, of the eighteenth resistor R18 is connected with the pin 1 of a receiving terminal J2, and the pin 2 of the receiving terminal J2 is grounded.

The circuit control principle in the unlocking process is described as follows:

when the circuit is connected, the contact on the receiving terminal receives the electric energy from the key to charge the twenty-fifth capacitor C25, the whole lock cylinder end circuit obtains the electric energy, the circuit starts to work normally, when the contact on the receiving terminal closes the electric power transmission and starts to transmit a control signal, the power supply of the lock cylinder circuit is supplied by the twenty-fifth capacitor C25, the twenty-fifth capacitor C25 starts to discharge, before the circuit discharges to the lowest supportable working voltage, the signal needs to be completely sent to the processor of the lock cylinder end for processing, if the match with the password stored in the lock cylinder end is correct, the lock cylinder main control module 7 of the lock cylinder end sends the successful password matching information to the key main control module 1, the key main control module 1 switches the circuit to the electric power transmission mode, the power supply VCC of the key directly supplies power to the power supply VCCRX of the lock cylinder, and the lock cylinder motor M1 is connected, the unlocking is completed, and meanwhile, the key main control module 1 sends acousto-optic information to the prompt module 3 to indicate that the password is correctly unlocked;

if the password matching is unsuccessful, the lock cylinder main control module 7 at the lock cylinder end sends password matching failure information to the key main control module 1, and the key main control module 1 sends an audible and visual alarm to the prompt module 3 to indicate that the password is incorrect;

other operations, such as password changing of the lock cylinder, reading of the number of the lock cylinder, permission changing of the lock cylinder and the like, need to be performed on a line in a time-sharing mode, data transmission and power transmission are periodically switched, it is guaranteed that the twenty-fifth capacitor C25 can be timely supplemented with power supplied to the power supply of the lock cylinder during data transmission, data are sent from the key end during data transmission, and then return data from the lock cylinder end are received.

In addition, the circuit at the key end also comprises a USB port P1 and a charging chip TP4056 for charging, an LED lamp D2 for providing night illumination and a battery socket P2 for connecting a lithium battery.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electronic door lock control circuit, characterized in that: including key end circuit and lock core end circuit, key end circuit includes key host module (1), storage module (2), suggestion module (3), wireless module (4), single line transmission module (5), storage module (2), suggestion module (3), wireless module (4) with key host module (1) links to each other and is used for storage data password, suggestion user and wireless transmission to receive control data, single line transmission module (5) with key host module (1) links to each other and is used for transmission power and signal, lock core end circuit includes single line receiving module (6), lock core host system (7), single line receiving module (6) with lock core host module (7) link to each other and are used for receiving power, signal and control lock core motor, single line transmission module (5) include seventh resistance (R7), A tenth resistor (R10), an eleventh resistor (R11), a third triode (Q3), and a transmission terminal (J1), wherein one end of the tenth resistor (R10) is connected to the power enable end ENVCC of the key master control module (1), the other end of the tenth resistor (R10) is connected to the base of the third triode (Q3), the emitter of the third triode (Q3) is connected to one end of the eleventh resistor (R11), one end of the eleventh resistor (R11) far from the emitter of the third triode (Q3) is connected to the base of the third triode (Q3), the collector of the third triode (Q3) is connected to pin 1 of the transmission terminal (J1), pin 2 of the transmission terminal (J1) is grounded, pin 1 of the transmission terminal (J1) is connected to the seventh resistor (R7) and then to the signal transmission pin nrx transmission control signal of the key master control module (1), the single-wire receiving module (6) comprises a nineteenth resistor (R19), one end of the nineteenth resistor (R19) is connected with a motor control end ENMOT of the lock cylinder main control module (7), the other end of the nineteenth resistor (R19) is connected with a base electrode of a fourth triode (Q4), a collector electrode of the fourth triode (Q4) is connected with a pin 1 of a motor (M1), a pin 2 of the motor (M1) is grounded, a pin 2 of the motor (M1) is connected with a positive electrode of a fourth diode (D4), a pin 1 of the motor (M1) is connected with a negative electrode of a fourth diode (D4), an emitter electrode of the fourth triode (Q4) is connected with one end of an eighteenth resistor (R18), the other end of the eighteenth resistor (R18) is connected with a positive electrode of a fifth diode (D5), a negative electrode of the fifth diode (D5) is connected with a positive electrode of a fifth capacitor (C25), the positive electrode of the twenty-fifth capacitor (C25) provides a power supply VCCRX at a lock cylinder end, one end, away from the base electrode of the fourth triode (Q4), of the eighteenth resistor (R18) is connected with a pin 1 of a receiving terminal (J2), and a pin 2 of the receiving terminal (J2) is grounded; when the circuit is connected, the contact on the receiving terminal receives electric energy from the key to charge the twenty-fifth capacitor, the whole lock core end circuit obtains electric energy, the circuit starts to work normally, when the contact on the receiving terminal closes power transmission and starts to transmit a control signal, the power supply of the lock core circuit is supplied by the twenty-fifth capacitor, the twenty-fifth capacitor starts to discharge, before the signal is discharged to the lowest working voltage which can be supported by the circuit, the signal needs to be completely sent to a processor of the lock core end for processing, if the password matching with the password stored in the lock core end is correct, the lock core main control module of the lock core end sends password matching success information to the key main control module, the key main control module switches the circuit to a power transmission mode, the power supply VCCRX of the lock core is directly supplied by the power supply VCC of the key, the lock core motor is switched on at the moment, and unlocking is completed, meanwhile, the key main control module sends out acousto-optic information to the prompt module to indicate that the password is correct and the lock is unlocked;

if the password matching is unsuccessful, the lock core main control module at the lock core end sends password matching failure information to the key main control module, and the key main control module sends an audible and visual alarm to the prompt module to indicate that the password is incorrect;

the electronic door lock control circuit further comprises a code for replacing the lock cylinder, a code for reading the lock cylinder and a code for changing the lock cylinder authority, time-sharing operation is required to be carried out on a circuit, data transmission and power transmission are periodically switched, the twenty-fifth capacitor is guaranteed to be timely powered to supply power for the lock cylinder during data transmission, data are sent from the key end during data transmission, and then return data from the lock cylinder end are received.

2. An electronic door lock control circuit according to claim 1, wherein: the seventh resistor (R7) is a 0 ohm resistor.

3. An electronic door lock control circuit according to claim 1, wherein: the twenty-fifth capacitor (C25) is an electrolytic capacitor of 6V100uf or a tantalum capacitor.