CN101216959A - Electronic lock management system - Google Patents

Abstract

The electronic lock management system is characterized in that its main station system is composed of a database server and a group of network workstations. The database server records the unlocking process, saves the unlocking authority of the electronic key, saves the organization and personnel information of the management department, and stores the electronic lock. , various parameters of the electronic key; the database server and a group of network workstations form a network system; the network workstation is placed with system management software, and the management software provides organization management, electronic lock initialization settings, electronic key initialization settings, electronic key authority management, Electronic key unlocking process management; the network workstation is used to read the information in the electronic key for the electronic lock or download the information to the electronic lock and the electronic key. Under the condition that the system of the invention satisfies the management of the unlocking process of the electronic lock, the electronic lock does not need to be connected to a network, and the system cost and power consumption are small.

Description

Electronic lock management system

technical field

The present invention relates to an electronic lock management system, more specifically an electronic lock management system that is used in various electric energy metering boxes or switch cabinets in power systems and needs to record the time of opening and closing the cabinet door and manage the authority of key users. Lock management system, also includes door management for other important occasions.

Background technique

Electronic locks have been widely used. The current electronic locks generally include an electronic control device and a mechanical lock part. The electronic control device issues an unlock command to the passed ID by identifying the ID of the key chip, and then opens the lock by manpower or motor drive. If it is not passed, the unlocking instruction will be refused. This electronic lock has the following defects, one is that one key can only open one lock, the other is that the unlocking time, number of times and the unlocker cannot be recorded and inquired, and the third is that the internal power supply is always in use and the power consumption is relatively high.

There are also many existing electronic lock management systems, which are mainly similar to the guest room door management systems in hotels, but the electronic locks in this management system need to provide power in the lock control part. If the power fails, the door cannot be opened. Such locks should be physically connected into a network and managed by the master station. The key does not have the function of analysis and processing, it is just a storage body, and the control analysis and processing are all managed by the lock control part, so the security has certain restrictions. When the locks are scattered in different regions, it is difficult to manage and maintain the locks, and they cannot be physically networked.

In the power supply enterprises, there is no effective monitoring method for the opening and closing of the electric energy metering box, and it is impossible to accurately grasp and control the personnel, time, frequency and other information during the opening and closing of the electric energy metering box. There is no reliable basis for statistics on meter reading, time limit for emergency repair to the scene and other on-site service information. When a service accident occurs, such as a staff member helping a customer steal electricity, it is difficult to find the responsible person. At present, power supply enterprises adopt the method of unified storage of the keys of the electric energy metering boxes. Due to the large number of electric energy metering boxes, the number and specifications of the keys are correspondingly large. The process of issuing keys takes up a lot of time and often makes mistakes in management. The padlocks of the existing metering boxes are used by different stations and different lock numbers, and must be customized from the manufacturer. At the same time, due to the inconsistency in the number of metering boxes in each station or the transformation of the station, there are often insufficient or redundant locks allocated according to the station. Field use creates confusion. Since the number of keys is limited, when multiple staff members need to receive the same numbered key, there will be insufficient keys. When the key is lost or the like, dozens of sets of locks with the same number need to be replaced. The padlock of the traditional metering box has no rainproof device, and it will rust quickly after a few months, making it impossible to open the door.

Contents of the invention

The present invention provides an electronic lock management system in order to avoid the disadvantages of the above-mentioned prior art. The system can obtain unlocking records; one electronic key can open multiple locks; if the electronic key is lost, its unlocking function will be invalid; in the case of satisfying the management of the electronic lock unlocking process, the electronic lock does not need to be connected to the network, reducing network construction Cost, reduce system cost; reduce the overall power consumption of the system at the same time.

The technical scheme that the present invention solves technical problem adopts is:

The electronic lock management system of the present invention is characterized in that the system includes a master station system, an electronic lock interface circuit, an electronic key interface circuit, an electronic lock control circuit and an electronic key circuit; the master station system is a database server and a group of network Composed of workstations, the database server is used to record the unlocking process, save the unlocking authority of the electronic key, save the organization and personnel information of the management department, and store various parameters of the electronic lock and the electronic key, including the ID number of the electronic lock and the ID number of the electronic key. The password set of ID number, electronic lock; Described database server and a group of network workstations form network system; Described network workstation places system management software, and management software provides organization management, electronic lock initialization setting, electronic key initialization setting, Electronic key authority management, electronic key unlocking process management; the network workstation is connected to the electronic lock interface circuit through the USB interface, used to read the information in the electronic lock or download information to the electronic lock; the network workstation is connected to the electronic key interface circuit through the USB interface Connection, used to read the information in the electronic key or download the information to the electronic key.

The structural features of the system of the present invention are also:

The electronic lock interface circuit includes setting a USB to 232 adapter chip U8, connecting the receiving and sending serial lines of the adapter chip U8 in parallel as information input and output terminals, and the USB interface J2 provides 5V power supply simultaneously, and the 5V The power supply, the information input and output terminals and the ground wire form a three-core interface J1 connected to the electronic lock, and the information of the electronic lock is sent and received through the three-core interface J1.

The electronic key interface circuit includes setting a USB to 232 adapter chip U9, connecting the receiving and sending serial lines of the adapter chip U9 in parallel as the information input and output terminals, and the information input and output terminals and the ground wire form a connection with the electronic key. The two-core interface J3 of the serial port line starts the electronic key circuit, and sends and receives the information of the electronic key.

In the electronic lock control circuit, a microprocessor U1 is set, and the microprocessor U1 uses a ring-connected serial port line as an information input and output terminal, connects the electronic key with the serial port line, and receives the command frame of the key chip; The processor U1 is connected to the memory U2 through the I ² C bus, and the processed data is stored in the memory U2; the microprocessor U1 is connected to the clock chip U3 through the I ² C bus; the microprocessor U1 is connected to the battery voltage monitoring chip U0 ; The output signal end of the microprocessor U1 is connected with the controller interface OUT-S of the mechanical lock.

A microprocessor U5 is set in the key circuit, and the microprocessor U5 uses a ring-connected serial line as information input and output, and is connected with the electronic lock control circuit with the serial line, and the microprocessor U5 communicates with the electronic lock in a bus mode I ² C The data memory U6 is connected, and the processed data is put into the data memory U6; the key is provided with a starting circuit and a power supply, and after the starting circuit contacts with the electronic lock control circuit, a high level is obtained, and the key power supply is turned on, and the microprocessor U5 will be turned on after starting. The power-on circuit performs self-holding.

The present invention utilizes the server and the workstation to construct the electronic lock management system, which can realize the following multiple functions:

Realize the initialization setting of the electronic lock and the update and maintenance of various operating parameters;

Realize the initialization setting of electronic keys, authority management, and unlocking record collection;

The operating parameters of the electronic lock are managed through the electronic key, which reflects that the electronic lock can be managed by the master station without physical networking;

The electronic lock with low power consumption is used, and the control power of the lock is provided by the electronic key. The simple key circuit and low energy consumption greatly reduce the size of the electronic key;

Through the electronic key interface circuit, the electronic key is authorized to switch the electronic lock, including the lock number, time period, and frequency of the electronic lock, so that one electronic key can open multiple electronic locks, which facilitates the centralized management of keys.

After the electronic key is lost, the function of the electronic key will become invalid outside the scope of limitation.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

1. The system of the present invention can use the master station to obtain the unlocking record of the electronic lock through the electronic key.

2. One electronic key can open multiple locks in the system of the present invention, which facilitates the management of keys.

3. After the electronic key is lost in the system of the present invention, under certain conditions, the function of the electronic key will become invalid.

4. The system of the present invention satisfies the management of the unlocking process of the electronic lock, and at the same time, the electronic lock does not need to be connected to the network, which reduces network construction costs and system costs.

5. The setting of the communication interface of the present invention enables related data to be retrieved and inquired after the event and in real time.

6. When the lock is not in action, the system does not consume power. When the electronic key is inserted into the lock, the electronic key provides the lock power supply. At the same time, after the electronic key leaves the lock, the electronic key does not consume power, which effectively reduces the overall power consumption.

7. Due to the low power consumption of the present invention, the electronic key can use a button battery as a power source, and at the same time, the simple key circuit can greatly reduce the volume of the electronic key.

Description of drawings

Fig. 1 is a block diagram of the system of the present invention.

Fig. 2 is a schematic diagram of the interface circuit of the electronic lock of the present invention.

Fig. 3 is a schematic diagram of the electronic key interface circuit of the present invention.

Fig. 4 is a schematic diagram of the control circuit of the electronic lock of the present invention.

Fig. 5 is a schematic diagram of the electronic key circuit of the present invention.

Fig. 6 shows the parameter setting process of the electronic lock by the workstation of the present invention.

Fig. 7 shows the parameter setting process of the electronic key by the workstation of the present invention.

Fig. 8 shows the process of setting the authority of the electronic key and reading the unlocking record of the electronic key by the workstation of the present invention.

Fig. 9 is the unlocking process of the electronic key of the present invention.

Below by specific embodiment, the present invention will be further described in conjunction with accompanying drawing:

Detailed ways

About the system composition:

Referring to Fig. 1, an electronic lock management system composed of a master station system, an electronic lock interface circuit, an electronic key interface circuit, an electronic lock control circuit and an electronic key circuit is set;

About the master station system:

As shown in Figure 1, the master station system is composed of a database server and a group of network workstations. The database server is used to record the unlocking process, save the unlocking authority of the electronic key, save the organization and personnel information of the management department, and store the electronic lock, Various parameters of the electronic key, including the ID number of the electronic lock, the ID number of the electronic key, and the password set of the electronic lock; the database server is connected to the network system and forms a network system with a group of network workstations; the network workstation placement system Management software, the management software provides organization management, electronic lock initialization setting, electronic key initialization setting, electronic key authority management, electronic key unlocking process management; the network workstation is connected with the electronic lock interface circuit through the USB interface, and is used to read the electronic key. The information in the lock or download information to the electronic lock; the network workstation is connected with the electronic key interface circuit through the USB interface, and is used to read the information in the electronic key or download the information to the electronic key.

About the electronic lock interface circuit:

See Figure 2, the adapter chip U8 of the electronic lock interface circuit uses CH341T, the capacitor C13 is used for decoupling the internal power node of CH341T, the capacitor C12 is used for decoupling the external power supply of CH341T, capacitors C14, C11 and inductor UL1 form a filter circuit, Crystal oscillator Y2 and C15 provide clock signals to CH341T, resistors R11 and R12 play the role of current limiting, and CH341T provides communication signals through parallel connection of current limiting resistors. The electronic lock interface circuit provides a three-core interface J1 to the lock, namely the signal ground wire (the first pin of J1), the signal wire (the third pin of J1) and the +5V power line (the second pin of J1), and J2 is the USB interface .

About the electronic key interface circuit:

Referring to Figure 3, the adapter chip U9 of the electronic key interface circuit is CH341T, capacitor C18 is used for decoupling the internal power node of CH341T, capacitor C17 is used for decoupling the external power supply of CH341T, capacitors C19, C16 and inductor UL2 form a filter circuit, Crystal oscillator Y3 and C20 provide clock signals to CH341T, resistors R13 and R14 play the role of current limiting, and CH341T provides communication signals through parallel connection of current limiting resistors. The electronic key interface circuit only provides the key with a two-core interface J3, namely the signal ground wire (the first pin of J3) and the signal wire (the third pin of J3), and J4 is the USB interface.

About the lock control circuit:

Referring to Fig. 4, the microprocessor U1 of the electronic lock control circuit adopts P89LPC922, the data memory U2 adopts 24C256WI, the clock chip U3 adopts 8563T, and the battery voltage monitoring chip U0 adopts BL8506. The 4 pins of the microprocessor are connected to the 3.3V power supply through the resistor R3, the 5 pins are grounded, the 9 pins are connected to the 5 pins of the memory, the 10 pins are connected to the 6 pins of the memory, and the 11 and 12 pins are connected in parallel to the electronic lock interface IN-YS 3 pins, 13 pins are connected to 1 pin of the lock control interface OUT-S, 14 pins are connected to 3 pins of the lock control interface OUT-S, 15 pins are connected to 3.3V power supply, 16 pins are connected to 1 pin of the battery voltage monitoring chip, 18 pins and The 2 pins of the lock control interface OUT-S are connected in parallel and then connected to the 3.3V power supply through the resistor R4. The microprocessor CPU, the memory and the clock chip are all connected and communicated by the I2C bus through the pull-up resistors R5 and R6.

When the key interface and the electronic lock interface are connected, the internal battery of the key provides 5V power supply to the lock circuit through pins 1 and 2 of the electronic lock interface (IN-YS), and is adjusted to a 3.3V constant voltage source by the power supply U4 for the lock. The control circuit is used. After the CPU in the lock control circuit is initialized, the pin 3 of the electronic lock interface IN-YS gets a high level, and the high level is fed back to the key to open the self-starting circuit of the key and connect the inside of the key. power supply.

The whole lock control circuit obtains the real-time clock value through the clock battery and 8563T clock chip. After the CPU starts to work, it communicates with the key through pins 11 and 12. The key and the electronic lock exchange information according to the established regulations. When the information exchange meets If the communication protocol has unlocking authority, the CPU of the electronic lock sends an unlocking command to the mechanical lock through pin 18 (P0.3), that is, the unlocking process is realized. The 13 pins (P0.7) and 14 pins (P0.6) of the CPU are used as the input of the CPU, and the state of the lock is detected through the information of these two pins. If it is detected that the mechanical lock is opened, there is no need to resend the unlock Order. During the unlocking process, the CPU records the unlocking time, the number of unlocking times, the ID number of the unlocking key and other unlocking information in the memory for future query. The CPU monitors the battery voltage value, and when the battery voltage is lower than the specified value, it transmits the information to the key.

About the key circuit:

Referring to Fig. 5, the microprocessor U5 of the key circuit adopts P89LPC922, and the data memory U6 adopts 24C256WI. The 9th and 10th pins of the microprocessor U5 are respectively connected to the 5th and 6th pins of the memory U6, the 11th and 12th pins of the microprocessor U5 are connected in parallel and then connected to the 3rd pin of the electronic lock interface SOCKT1, the microprocessor U5 and the resistor R7, R8 and transistor Q1 constitute the self-starting and self-locking circuit of the internal power supply of the key. The microprocessor U5 communicates with the memory U6 through the pull-up resistors R10 and R11 in an I ² C manner.

When the key is inserted into the lock, the 5V power supply is sent to the electronic lock circuit through SOCKT1, and the electronic lock starts to work, so that the pin 3 of the interface IN-YS in the electronic lock gets a high level, so that the third pin of SOCKT1 passes through IN-YS. When the high level is obtained, the self-starting circuit of the key is turned on through the triode at this time, so that the power supply U7 can output a 3.3V regulated power supply, and the 3.3V power supply starts to supply power to the internal system of the key. Pin 20 of the CPU (P0.1) always sends a high level to the enable terminal (pin 3) of the power supply U7 during the unlocking period, so that U7 is always in the working state during the unlocking period to maintain a constant voltage of 3.3V in the entire circuit. After the CPU starts working, it sends a command frame to the electronic lock through pins 11 and 12, and the electronic lock then performs identification processing based on the received relevant information to determine whether to unlock or not. During the unlocking process, the CPU records the unlocking time, the number of unlocking times, the ID number of the electronic lock and other unlocking information in the memory for future query. When the key and the electronic lock complete the communication and are disconnected from each other, the CPU in the key sends a low level to the third pin of U7, which prohibits U7 from working, thereby turning off the total power supply of the key. The R8 pull-down resistor increases the turn-on threshold of the transistor Q1 to improve the anti-interference ability.

The unlocking authority in the key can be set by the master station according to the needs, so the administrator can easily set the authority of the key before distributing the key to the unlocker. It can be stipulated that which key can only be opened and which locks can be set The timeliness of the key, that is, the key can only be used within the specified time, otherwise the lock cannot be unlocked even if there is a key. The key system is equipped with a self-starting circuit, the main purpose is to reduce power consumption. When the lock is not in action, the system does not consume power. Only when the key is inserted into the lock, the key provides the external power supply of the system, and then starts the interior of the lock and key respectively. Power supply for internal devices, thus reducing the power consumption of the system.

The parameter setting process of the workstation to the electronic lock:

Referring to Figure 6, the parameters of the electronic lock include the ID number used to identify the electronic lock, password set, data version number, function enable flag, etc. In addition to parameter settings, it also includes setting the time of the electronic lock. The interface circuit sets parameters for the electronic lock. The workstation first sends the command frame actively, and the electronic lock detects the validity of the command frame and performs password verification. For the new electronic lock (that is, the content of a specified area of the memory in the electronic lock has not been rewritten or is still FFH), the electronic lock does not Perform password verification and only check the validity of the command frame. After passing the inspection and proofreading, the electronic lock answers the workstation. Then the workstation sends relevant parameters to the electronic lock in the form of a command frame, and the electronic lock is written into the internal memory of the electronic lock according to certain specifications.

The parameter setting process of the workstation for the electronic key:

Referring to Fig. 7, the parameters of the electronic key include the ID number of the electronic key, the password set, the data version number, and the function opening flag of the electronic lock, and the workstation sets the parameters of the electronic key through the electronic key interface circuit. The electronic key first sends out a command frame actively, and the workstation checks the validity of the command frame and checks the password. After the above process is completed, the workstation and the electronic key replace the working mode, and the workstation initiates the command instead, and the electronic key responds to the command as required. Then the workstation sends relevant parameters to the electronic key in the form of a command frame, and the electronic key is written into the internal memory of the electronic key according to certain specifications.

The workstation sets the authority of the electronic key and reads the unlocking record process of the electronic key:

Referring to Fig. 8, in this process, the workstation first reads and saves the unlocking record of the electronic key, and then sets the next unlocking authority of the electronic key. The unlocking record of the electronic key includes the unlocking record of this electronic key and the unlocking record of other electronic keys read by this electronic key from the electronic lock (before the electronic key is unlocked, the last possible time recorded in the electronic lock It is the unlocking record of other electronic keys). The unlocking record of this electronic key is composed of the ID number of the electronic lock and the unlocking time. The last unlocking record in the electronic lock is composed of the ID number of the electronic key and the unlocking time. . The unlocking authority of the electronic key is composed of a set consisting of the start time, the valid days of the authority, the ID number that can be unlocked, and the function opening flag of the electronic lock.

The workstation sets the authority of the electronic key and reads the unlocking record of the electronic key through the electronic key interface circuit. The electronic key first sends out a command frame actively, and the workstation checks the validity of the command frame and checks the password. After the above process is completed, the workstation and the electronic key replace the working mode, and the workstation initiates the command instead, and the electronic key responds to the command as required. Then the unlocking record of this key recorded in the electronic key of the workstation and the last unlocking record of the electronic lock stored in the electronic key, and then the unlocking authority is sent to the electronic key in the form of a command frame, and the electronic key is written into the electronic key according to certain specifications in memory.

The unlocking process of the electronic key:

See Figure 9. In this process, when the unlocking authority of the electronic key is confirmed, the electronic key first reads the last unlocking record recorded in the electronic lock, saves it in the memory of the electronic key, and then saves the unlocking record of this time , and then issue an unlock command to unlock the lock by the electronic lock control circuit, and at the same time, the electronic lock saves the unlock record in the electronic lock memory.

Claims (5)

1. electronic lock management system is characterized in that described system comprises main station system, electronic lock interface circuit, electron key interface circuit, electronic lock lock control circuit and electron key circuit; Described main station system is that a database server and a group network workstation are formed, write down the unlocking authority of the process of unblanking, preservation electron key, the mechanism and the personal information of preservation administrative authority with described database server, and deposit all kinds of parameters of electronic lock, electron key, comprise ID number of electronic lock, ID number of electron key, the password set of electronic lock; A described database server and a group network workstation are formed network system; Described network workstation place system management software, management software provide institutional management, electronic lock initialization setting, electron key initialization setting, electron key rights management, electronic key unlocking process management; Network workstation is connected with the electronic lock interface circuit by USB interface, is used for reading the information of electronic lock or download message to electronic lock; Network workstation is connected with the electron key interface circuit by USB interface, is used for reading the information of electron key or download message to electron key.

2. electronic lock management system according to claim 1, it is characterized in that described electronic lock interface circuit comprises is provided with USB to 232 a connect chip U8, with the reception of described connect chip U8 and send Serial Port Line and connect, as the information input/output terminal, USB interface J2 provides 5V power supply simultaneously, described 5V power supply, information input/output terminal and ground wire constitute the three core interface J1 that are connected with electronic lock, with the information of described three core interface J1 transceiver electronicses lock.

3. electronic lock management system according to claim 1, it is characterized in that described electron key interface circuit comprises is provided with USB to 232 a connect chip U9, with the reception of connect chip U9 and send Serial Port Line and connect as the information input/output terminal, described information input/output terminal constitutes the two core interface J3 that are connected with electron key with ground wire, start the electron key circuit by Serial Port Line, and the information of transceiver electronics key.

4. electronic lock management system according to claim 1, it is characterized in that in the described electronic lock lock control circuit microprocessor U1 being set, microprocessor U1 uses the Serial Port Line of articulating as the information input/output terminal, be connected with electron key with described Serial Port Line, receive the command frame of key chip; Microprocessor U1 is with bus mode I ²C is connected with storer U2, and the data after the processing deposit storer U2 in; Microprocessor U1 is with I ²The C bus mode is connected with clock chip U3; Microprocessor U1 is connected with battery voltage monitoring chip U0; The output signal end of microprocessor U1 is connected with the control unit interface OUT-S of mechanical lock.

5. electronic lock management system according to claim 1, it is characterized in that in the described key circuit microprocessor U5 being set, microprocessor U5 uses the Serial Port Line of articulating as the information input and output, is connected with electronic lock lock control circuit with described Serial Port Line, and microprocessor U5 is with bus mode I ²C is connected with data-carrier store U6, and the data after the processing are put into data-carrier store U6; Key is provided with a start-up circuit and power supply, after start-up circuit and the electronic lock management and control circuit contacts, obtains high level, and opens the key power supply, and microprocessor U5 carries out self-sustaining with the power initiation circuit after starting.

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