CN205531772U - An optical code security lock based on wireless power supply and low power consumption - Google Patents

Abstract

The utility model relates to an electron safety lock field to relate to optical communication field, radio communication field, wireless energy transmission field, concretely relates to light sign indicating number safety lock based on wireless power supply low -power consumption, including tapered end and key two parts: the mechanical part of key is traditional zigzag key, and electronic circuit is become by low -power consumption MCU, wireless power supply receiving module, wireless signal receiving module, storage module, light emitting diode group, the mechanical lock core of tapered end divides and separates with the spring bolt, and electron master control circuit comprises power module, MCU, wireless power supply emission module, wireless signal transmission module, storage module, photosensitive sensor, relay circuit. The utility model discloses a wireless power supply uses low -power consumption MCU to make amendment to the password to key electronic circuit control, the back of unblanking simultaneously at every turn, has improved the life and the security protection performance of tool to lock.

Description

An optical code security lock based on wireless power supply and low power consumption

technical field

The utility model relates to the field of electronic safety locks, and relates to an optical code safety lock based on wireless power supply and low power consumption in the fields of optical communication, wireless communication and wireless energy transmission.

Background technique

With the development of science and technology and the improvement of people's living standards, material wealth has become more and more abundant, and people's safety awareness has also been continuously strengthened. In some special occasions, such as bank safes, warehouses, large factories, etc., people have higher and higher requirements for the safety performance of locks.

At present, there are three main types of locks on the market: mechanical locks, electronic locks and mechanical and electronic locks. The mechanical lock has simple control and low cost, but its anti-theft ability is poor and the safety factor is not high. Electronic locks such as combination locks, induction locks, biological locks, etc., although the difficulty of technical opening has been improved and the appearance is fashionable, electronic locks usually use batteries, which have a short lifespan, are easy to cause environmental pollution, and are easy to be destroyed by violence; on the other hand, their mechanical control Complicated and much more expensive than mechanical locks. The mechanical and electronic integrated lock combines the electronic control part with the mechanical control, which greatly improves the security level.

The mechanical anti-theft functions used by the locks on the market are relatively general. At present, the mechanical lock cylinders used on the market are basically divided into three levels, namely, A level, B level, and super B level. Among them, the anti-destructive opening time of the A-level lock cylinder is greater than 15 minutes, and the anti-technical opening time is greater than 1 minute. The anti-destructive opening time of the B-level lock cylinder is greater than 30 minutes, and the anti-technical opening time is greater than 5 minutes. The anti-technical opening time of the super B-level anti-theft door lock cylinder is greater than 4 hours.

Utility model content

In order to overcome the above deficiencies, the utility model provides an optical code safety lock based on wireless power supply and low power consumption, which adopts dual control of mechanical and optical code to unlock, which improves the ability of the lock to prevent destructive opening and anti-technical opening, and prolongs the service life. , while reducing costs.

In order to solve the above technical problems, the technical solution adopted by the utility model is: an optical code safety lock based on wireless power supply and low power consumption, including two parts: a lock head and a key. The key is composed of mechanical and electronic circuits; the lock head is composed of a mechanical lock cylinder and an electronic main control circuit.

The mechanical part of the key is a traditional zigzag key, which can drive the mechanical lock cylinder of the lock head to rotate when the tooth shape of the key matches.

The electronic circuit part of the key is composed of a low power consumption MCU, a wireless power supply receiving module, a wireless signal receiving module, a storage module and a light emitting diode.

The MCU of the key electronic circuit adopts an ultra-low-power single-chip microcomputer such as TI's MSP430F1232 as the control core, and other types of ultra-low-power MCUs can also be used to send various control commands or receive and analyze various control commands.

The wireless power supply receiving module of the key electronic circuit is composed of a wireless receiving circuit and a receiving coil. The wireless receiving circuit receives wireless energy from the wireless transmitting circuit through the receiving coil, and then outputs a 3.3V direct current through the voltage stabilizing chip for the electronic circuit of the entire key. powered by.

The wireless signal receiving module of the key electronic circuit is connected to the serial port of the low-power MCU to communicate with the main control circuit of the lock head to obtain password information and verification information.

The storage module of the key electronic circuit is connected with a low-power MCU, and is controlled by the MCU to store password information and verification information.

A group of 6 light-emitting diodes in the electronic part of the key is controlled by a low-power MCU to send an optical signal with password information.

The mechanical lock core in the lock head, when the key tooth shape matches the key and turns to a certain position, it will turn on the power supply of the lock head part and the whole circuit will start to work. The mechanical lock core part is separated from the lock tongue, and the lock tongue is controlled by the relay. , avoiding the loss of the protection ability of the lock due to the violent destruction of the lock head.

The electronic main control circuit of the lock is composed of a power supply module, an MCU, a wireless power supply transmitting module, a wireless signal transmitting module, a storage module, a photosensitive sensor and a relay circuit.

The power supply module of the lock electronic main control circuit takes power from the mains grid, and outputs 3.3V and 5V direct currents through the power conversion chip to provide required electric energy for each electronic circuit of the lock part.

The MCU of the lock electronic main control circuit is used to generate passwords, control checks, logic judgments, etc., and process each module to coordinate work.

The wireless power supply transmitting module of the lock electronic main control circuit is composed of a control circuit and a transmitting coil, and transmits electric energy to the wireless power supply receiving module, thereby supplying power to the electronic circuit of the key.

The wireless signal sending module of the lock electronic main control circuit is controlled by the MCU to communicate with the key wireless signal receiving module.

The storage module of the electronic main control circuit of the lock head is connected with the MCU in the lock head, and is controlled by the MCU to store password information, key luminous intensity information and verification information of wireless communication.

The photosensitive sensor of the electronic main control circuit of the lock head is a photoresistor connected to the A/D interface of the MCU for collecting light information from the LED in the key circuit and collecting corresponding light intensity of the diode.

The relay of the electronic main control circuit of the lock head is controlled by the MCU in the lock head, and is used to control the action of the dead bolt to unlock.

Compared with the prior art, the beneficial effects of the utility model are:

1. By using the wireless power supply module, the battery is avoided in the key part, which realizes the environmental protection of the product and improves the service life.

2. Through the use of low-power MCU, the power consumption of the key electronic circuit is reduced, and at the same time, the burden of the wireless power transmission module is reduced, and the stability of the entire system is improved.

3. The system increases the detection of the key LED light intensity when verifying the electronic password, which further improves the security of the system.

4. The utility model cleverly utilizes the space sealing when the key is unlocked, reduces the interference of external light on the LED light intensity, and improves the identification ability of the system; at the same time, the design of the separation of the lock head and the lock tongue makes the lock head violently destroyed Also can not unlock, has improved the ability of anti-destructive opening.

5. The utility model uses key tooth shape matching to drive the mechanical lock cylinder to rotate to supply power to the entire electronic circuit. In other cases, the entire electronic circuit does not consume electric energy, which greatly reduces energy consumption.

6. In this utility model, after each successful unlocking, the password is automatically modified and automatically matched to the key end, which improves the system's ability to prevent technical opening, thereby improving the security of the entire system.

Description of drawings

For ease of description and understanding of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural diagram of the system energy management of the utility model.

Fig. 3 is a structure diagram of the lock main control circuit of the utility model.

Fig. 4 is a circuit structure diagram of the utility model key.

Fig. 5 is a flow chart of the utility model system.

Fig. 6 is a password modification flow chart of the utility model.

In the figure 1. key, 2. lock head, 3. relay, 4. deadbolt.

detailed description

Referring to FIG. 1 , an optical code security lock based on wireless power supply and low power consumption includes two parts: a key 1 and a lock head 2 . Wherein the key 1 is composed of two parts, a mechanical and an electronic circuit; the lock head 2 is composed of a mechanical lock cylinder and an electronic main control circuit.

When the tooth shape of key 1 matches, key 1 will turn on the power module in lock head 2 after turning to a certain position, and the whole circuit will start to work. The wireless power supply module will supply power to key 1. When the photoelectric intensity and photoelectric password are detected to match Under the situation, the MCU control relay 3 in the electronic main control circuit of the lock head 2 is closed, and the dead bolt 4 moves to unlock.

Referring to Figure 2, under normal circumstances, the circuit between the power module and the wireless power supply sending module is not connected and will not consume power. The circuit and the wireless power transmission module are powered. The wireless power supply receiving module of the key part receives electric energy and further supplies power to the electronic circuit of the key; at the same time, when the key is pulled out, the circuit will be disconnected and the entire electronic system will stop working.

Among them, the input AC 220V of the power supply module is converted into 12V AC by the transformer, rectified by the bridge rectifier and converted into DC, and finally output +12V, 5V, 3.3V DC through the voltage regulator chips 7812, 7805, 1117 to provide the required power for the entire main control circuit. working voltage. The wireless power supply module can choose the XKT-408 chip with high precision and good stability. The working voltage of the sending module: 9V ~ 12V; the output current of the receiving module: 5V/600mA, so as to supply power to the key electronic circuit.

Referring to Figure 3, the power supply module outputs +3.3V DC through the voltage regulator chip 1117 to supply power to the main controller MCU. High cost performance. The storage module used to store password information, new information on key luminous intensity, and wireless communication verification information uses low-cost EEPROM to connect to serial port 1 of the control chip; the wireless signal sending module is used to communicate with the wireless signal receiving module of the key electronic circuit , send password information and verification information and connect to the serial port 2 of the main control chip; the photosensitive sensor part is connected with the A/D interface of the main control chip with six photoresistors that can detect the LED luminous intensity and record the LED switch signal. The relay used to control the action of the deadbolt to unlock is connected to the I/O interface of the main control chip.

Referring to Fig. 4, the wireless power supply receiving module outputs +3.3V via a voltage regulator chip and is connected to the power supply terminal of a low-power MCU, wherein the low-power MCU is a 16-bit ultra-low power microcontroller MSP430F1232 from TI. The storage module EEPROM used to store the password information and the light intensity of the key LED is connected to the serial port 1 of the low-power MCU; the wireless signal receiving module used to communicate with the main control circuit of the lock and verify the information is connected to the low-power MCU The serial port 2 is connected; a row of 6 light-emitting diodes used to send password information with optical signals is connected to the I/O interface of the low-power MCU.

Among them, in Fig. 3 and Fig. 4, the wireless signal transceiver module considers aspects such as power consumption, modulation format, data transmission rate, transmission power and receiving sensitivity, and reliability of the circuit, and selects a low-power consumption, Highly integrated and multi-channel wireless transceiver chip CC1101. The memory module EEPROM can be selected from Atmel's serial memory series integrated circuit AT34C02-10TI-1.8 in 8-TSSOP package and tube package.

Referring to Figure 5 is the system flow chart of the utility model, the coded lock needs to be initialized before use, and is used to record the luminous intensity of the six LEDs of the key. The algorithm generates a set of passwords, which are encrypted and sent to the key through the wireless communication module. When the system detects that there is light intensity data, it will not perform initialization operations. In the general use process, the mechanical matching is performed first, and when the mechanical part is correct, the electronic circuit supplies power for electronic matching to verify the LED intensity and light password information, and finally the MCU sends a signal to control the relay action to control the switch of the deadbolt.

Referring to Fig. 6, it is a flow chart of password matching modification of the present invention. When the key is successfully opened once, the password is automatically changed, and the specific process is as follows. The MCU of the central control circuit generates a new password according to the algorithm, encrypts the password, and then communicates with the key terminal through the wireless transmission module, and starts sending the encrypted password through the verification information confirmation. The key part performs decryption after receiving the information sent by the master, stores the decrypted new password into the storage module, sends a message to confirm that the password has been modified, and the master confirms that the key password has been modified and writes the password into the storage module for storage.

Claims (3)

1. a light code safety lock based on wireless power low-power consumption, including tapered end and key two parts, it is characterized in that: the mechanical part of described key is traditional zigzag key, electronic circuit is made up of low-power consumption MCU, wireless power receiver module, reception of wireless signals module, memory module, light emitting diode；The mechanical lock part of described tapered end separates with dead bolt, and electron master control circuit is made up of power module, MCU, wireless power transmitter module, wireless signal sending module, memory module, light sensor, relay circuit.

A kind of light code safety lock based on wireless power low-power consumption the most according to claim 1, it is characterised in that: the mechanical part of described key is traditional zigzag key, and key coupling lock core rotates the power supply circuits for connecting tapered end；After tapered end electron master control circuit ON, wireless power supply module is to the power electronics of key.

A kind of light code safety lock based on wireless power low-power consumption the most according to claim 1, it is characterised in that: electronically validating part is verified key not only by light code information and detects LED illumination intensity.