CN217521615U - High-efficient safe access control device for power distribution station room - Google Patents
High-efficient safe access control device for power distribution station room Download PDFInfo
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- CN217521615U CN217521615U CN202221336759.3U CN202221336759U CN217521615U CN 217521615 U CN217521615 U CN 217521615U CN 202221336759 U CN202221336759 U CN 202221336759U CN 217521615 U CN217521615 U CN 217521615U
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Abstract
A high-efficiency and safe power distribution station room access control device comprises a panel arranged at the front part, a cover plate arranged at the rear part, a radio frequency card reading module and an access control controller main board which are arranged between the panel and the cover plate; the radio frequency card reading module and the access controller mainboard are communicated through an SPI (serial peripheral interface) port communication interface, so that the radio frequency card reading module and the access controller mainboard are communicated; the access controller mainboard is provided with a microcontroller MCU, a communication interface, a memory, an MCU clock circuit, a large area and small area coding module, a Bluetooth wireless communication module and an electric control lock driving module which is in signal connection with the electric control lock; the door controller is internally filled with an organic silicon electronic pouring sealant, the cover plate is a U-shaped cover plate, and the protruding part of the U-shaped cover plate is fixed on the door body. The utility model discloses a fill electromechanical silicon electron casting glue and can be effectively waterproof, the high temperature transmission on the effective separation door body of design of U type apron ensures the outdoor normal operating of access control ware.
Description
Technical Field
The utility model relates to an entrance guard technical field, concretely relates to high-efficient safe distribution station room entrance guard's device.
Background
At present, the entrance guard of a residential district switching station and a power distribution room is mostly composed of an entrance guard controller, an entrance guard card reader, an entrance guard power supply, an electric control lockset and an IC/ID entrance guard card. The entrance guard controller is connected with the card reader and the electric control lock, when the card is read, the entrance guard controller sends the read card number information to the entrance guard controller, the entrance guard controller compares the authority and the timeliness of whether the card exists in a memory of the entrance guard controller, the lock control relay is successfully driven to act through comparison, and the electric control lock acts to open the door. Meanwhile, the access controller is provided with a communication interface, and the authority of the access controller is increased or deleted through access management software.
At present, metal security doors are adopted for a variable switching station and a power distribution room door of a residential area, and the surface temperature of the door body can reach more than 60 ℃ under the condition of direct sun exposure in summer. In order to facilitate card swiping for opening the door, the access control card swiping device is installed on the outer side of the door body and close to the door opening handle, and the phenomenon that access control card reading fails or card swiping is conducted for multiple times to compare the access control card swiping device with the door opening handle can often occur at high temperature in summer.
Disclosure of Invention
Aiming at the technical problems, the technical scheme provides the efficient and safe access control device for the power distribution station room, the inside of an access control device is filled with the organic silicon electronic pouring sealant, and the design of a U-shaped cover plate can effectively prevent water and prevent high-temperature transmission on a door body, so that the outdoor normal operation of the access control device is ensured; the problems can be effectively solved.
The utility model discloses a following technical scheme realizes:
a high-efficiency and safe power distribution station room access control device comprises a panel arranged at the front part, a cover plate arranged at the rear part, a radio frequency card reading module and an access control controller mainboard, wherein the radio frequency card reading module and the access control controller mainboard are arranged between the panel and the cover plate; the radio frequency card reading module is provided with an RC522 non-contact read-write card chip, a 13.56MHz antenna and matching circuit connected with the RC522 non-contact read-write card chip, a clock circuit of the RC522 and an SPI communication interface, and the SPI communication interface is connected with the access controller mainboard to realize the communication between the radio frequency card reading module and the access controller mainboard; the access controller mainboard is provided with a microcontroller MCU, a communication interface connected with the microcontroller MCU, a memory, an MCU clock circuit, a large area and small area coding module, a Bluetooth wireless communication module and an electric control lock driving module in signal connection with an electric control lock; the entrance guard controller is filled with an organic silicon electronic pouring sealant, the cover plate is a U-shaped cover plate, and the protruding portion of the U-shaped cover plate is fixed on the door body.
Furthermore, the RC522 non-contact read-write card chip is a core component of the access control radio frequency card reading module, and the RC522 non-contact read-write card chip integrates a passive non-contact communication mode and a passive non-contact communication protocol under a 13.56MHz communication frequency band; and supports multi-layer applications of ISO14443A and the fast crypt 1 encryption algorithm.
Further, the transmitter part inside the RC522 non-contact read-write card chip can drive the reader-writer antenna to communicate with the ISO14443A/MIFARE card and the transponder; the receiver portion of the C522 contactless read-write card chip contains demodulation and decoding circuitry for processing ISO14443A compliant transponder signals; the digital part inside the RC522 contactless read-write card chip processes ISO14443A frames and error detection.
Furthermore, the electric control lock adopts an unlocking relay, and the microcontroller MCU is also connected with a state indicator lamp and a buzzer.
Further, microcontroller MCU be connected with the power, the power adopt commercial power and battery backup, when the commercial power has a power failure, choose battery backup for the entrance guard's device power supply.
Advantageous effects
The utility model provides a pair of high-efficient safe access control device for distribution station room compares with prior art, and it has following beneficial effect:
(1) this technical scheme is through adopting the filling of organosilicon electron pouring sealant between panel and apron, can effectively play waterproof and thermal-insulated effect, can protect the security of radio frequency card reading module and access control ware mainboard, reduce the door plant and read the high temperature transmission of card module and access control ware mainboard to the radio frequency for the impaired condition of radio frequency card reading module and access control ware mainboard takes place, effectual radio frequency card reading module and access control ware mainboard have been protected, ensure the outdoor normal operating of access control ware. The cover plate is a U-shaped cover plate, and the protruding part of the U-shaped cover plate is fixed on the door body. The door plate is provided with a gap between the fixed radio frequency card reading module and the door controller main board, so that the temperature on the door plate can be prevented from being transmitted to the position of the U-shaped groove bottom surface of the cover plate, the radio frequency card reading module and the door controller main board are protected, and the radio frequency card reading module and the door controller main board can be effectively prevented from being crashed or damaged by high temperature on the door plate.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the middle and rear covers of the present invention.
Fig. 3 is a schematic structural diagram of the middle rf card reading module of the present invention.
Fig. 4 is a schematic diagram of a circuit connection of the middle rf card reading module of the present invention.
Fig. 5 is the utility model discloses the structural schematic diagram of well access control ware mainboard.
The symbols in the drawings are: the system comprises a panel 1, a radio frequency card reading module 2, a non-contact read-write card chip 21-RC522, an antenna and a matching circuit 22-13.56MHz, a clock circuit 23-RC522, a 24-SPI communication interface, a 3-entrance guard controller mainboard, a 31-microcontroller MCU, a 32-MCU communication interface, a 33-MCU memory, a 34-MCU clock circuit, a 35-large area, a small area coding module, a 36-Bluetooth wireless communication module, a 37-electric control lock driving module, a 38-state indicator lamp, a 39-buzzer and a 4-cover plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. Without departing from the design concept of the present invention, the ordinary people in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention.
Example 1:
as shown in fig. 1 to 2, an efficient and safe access control device for a power distribution station room comprises a panel 1 arranged at the front part, a cover plate 4 arranged at the rear part, and a radio frequency card reading module 2 and an access control controller main board 3 arranged between the panel 1 and the cover plate 4. The panel 1 is provided with a position for installing a state indicator lamp 37 and a buzzer 38 of the access controller. Panel 1 and apron 4 between, position beyond radio frequency card reading module 2 and access controller mainboard 3, adopt the electronic casting glue of organosilicon to fill, can effectively play waterproof and thermal-insulated effect, can protect the security of radio frequency card reading module 2 and access controller mainboard 3, reduce the door plant to the high temperature conduction of radio frequency card reading module 2 and access controller mainboard 3, make the impaired condition of radio frequency card reading module 2 and access controller mainboard 3 take place, effectual radio frequency card reading module 2 and access controller mainboard 3 of having protected, ensure the outdoor normal operating of access controller. The cover plate 4 is a U-shaped cover plate, and the protruding part of the U-shaped cover plate is fixed on the door body. The radio frequency card reading module 2 and the entrance guard controller mainboard 3 are fixed on the door plate, and the door plate is provided with a gap between the door plate and the radio frequency card reading module 2, so that the temperature on the door plate can be prevented from being transmitted to the position of the U-shaped groove bottom surface of the cover plate, the radio frequency card reading module 2 and the entrance guard controller mainboard 3 are protected, and the radio frequency card reading module 2 and the entrance guard controller mainboard 3 can be effectively prevented from being crashed or damaged by high temperature on the door plate.
As shown in fig. 3 to 4, the radio frequency card reading module 2 is provided with an RC522 contactless read/write card chip 21, a 13.56MHz antenna and matching circuit 22 connected to the RC522 contactless read/write card chip 21, a clock circuit 23 of the RC522, and an SPI port communication interface 24, and the SPI port communication interface 24 is connected to the access controller motherboard 3, so as to implement communication between the radio frequency card reading module 2 and the access controller motherboard 3.
The RC522 non-contact read-write card chip 21 is a core component of the access control radio frequency card reading module 2, and the RC522 non-contact read-write card chip 21 integrates a passive non-contact communication mode and a passive non-contact communication protocol under a 13.56MHz communication frequency band; and supports multi-layer applications of ISO14443A and the fast crypt 1 encryption algorithm.
The transmitter part inside the RC522 non-contact read-write card chip 21 can drive the reader-writer antenna to communicate with the ISO14443A/MIFARE card and the transponder; the receiver portion of the C522 contactless read-write card chip contains demodulation and decoding circuitry for processing ISO14443A compliant transponder signals; the digital part inside the RC522 contactless read-write card chip processes ISO14443A frames and error detection.
As shown in fig. 5, the door access controller motherboard 3 is provided with a microcontroller MCU31, and the communication interface 32 connected to the microcontroller MCU31 is connected to the SPI interface communication interface 24 in the radio frequency card reading module 2, so as to read the state of the radio frequency card reading module 2 in real time and compare whether the password of the door access card is correct during card swiping.
Microcontroller MCU31 still be connected with MCU memory 33, when there is the entrance guard's card to punch the card, entrance guard's controller mainboard 3 can be with the information storage of punching the card to MCU memory 33. A complete card reader door opening message comprises: card number and card time.
When the valid authority card is used for card swiping, the card swiping information is stored in the sector data of the access control card. The card swiping information comprises: door controller serial number, time of punching the card. And reading data in the sector of the access control card through access control authority management software to obtain a card swiping record. And meanwhile, the card swiping record is locally stored by the access controller, and the local card swiping record inquiry is realized by the access control software through a wireless Bluetooth communication interface.
The MCU31 is also connected with an MCU clock circuit 34 and a power supply, and the MCU clock circuit 34 adopts a precision clock module circuit; the power supply adopts commercial power and a standby battery, and when the commercial power fails, the standby battery is selected for supplying power for the access control device. The standby power supply is a CR1220 lithium battery, even if the door controller is powered off for a long time, the clock can run normally.
The MCU31 is also connected with a large area and small area coding module 34 and a Bluetooth wireless communication module 36, different areas are divided according to the group areas of the operation and maintenance team, and the access controller dials codes according to the area to which the access controller belongs when installed, so that the management of the area authority is convenient and flexible. And (4) installing access control management APP software by the members of the operation and maintenance team, and realizing emergency door opening or access control historical event extraction and check according to user distribution permission. The access control card is convenient to manage, the prior art needs local authorization or authority deletion, and the access control card is managed by the access control card, and regional authority and time authority are written into the access control card.
The CPU access control card password comparison process comprises the following steps: the CPU card has a hardware encryption structure and can be used as an encryption device; moreover, a special software system, namely COS (chip Operation System), provides higher safety for data storage and Operation, and can be used for storing small-batch data.
The encryption and decryption functions of the CPU card are completed by the embedded hardware encryption coprocessor, and the security is high. Currently, the CPU card generally adopts the DES encryption algorithm. The DES encryption algorithm is an iterative block cipher algorithm that encrypts a plaintext into blocks in units of 64 bits and then converts each block of plaintext into a 64-bit ciphertext using a key. The key used is 64 bits in length, with an effective length of 56 bits (8 bits for parity). To further improve security, the CPU card is usually encrypted using a triple DES algorithm, and the cipher length used is 128 bits.
When in application, the security of the CPU card is ensured by the security system of the COS of the CPU card, and the CPU card relates to an access control mechanism and a confidentiality mechanism of information in the card. The COS security architecture conceptually includes three parts: security state, security attributes, and security mechanisms. The smart card meets the requirement of safety attribute in the safety state, and is transferred from the current safety state to the next safety state under the action of a safety mechanism by executing an operation instruction. The main function of editing the CPU card key management system in the section 2 system structure and function is to provide a generation mechanism and an encryption algorithm of various keys, and store the generated keys in a CPU smart card with a key derivation function, i.e., an sam (security Access module) card. The key is issued in a cascade generation and issuing mode, namely, various sub-keys required by the next stage are generated by the upper stage and are transmitted to the next stage in a card form in a line encryption mode, so that the safety of the system and the convenience of application are greatly improved.
The encryption algorithm mainly adopts a very mature DES algorithm with higher strength. In order to further improve the security strength of the system, in a practical system, a 3DES algorithm based on a DES algorithm is adopted. The 3DES algorithm DES encrypts/decrypts plaintext (X) 3 times with two keys (KL and KR).
3DES encryption mode: the decryption mode corresponding to Y = DES (KL, DES-1(KR, DES (KL, X))) is as follows: x = DES-1(KL, DES (KR, DES-1(KL, Y))) where DES (K, X) denotes DES encryption of data X with key K and DES-1(K, Y) denotes decryption of data Y with key K.
The microcontroller MCU31 is also connected with an electric control lock driving module 37 in signal connection with the electric control lock; the electric control lock adopts an unlocking relay, and the microcontroller MCU31 is also connected with a status indicator lamp 38 and a buzzer 39 through a status indicator lamp and a buzzer driving circuit of the access controller to indicate the working status of the access controller.
The working state of the access controller is as follows: and the microcontroller MCU reads the state of the radio frequency card reading module in real time and compares whether the access control card password is correct or not during card swiping. And after password verification, reading the authorization start-stop time in the access control card memory and comparing the authorization start-stop time with a clock in the access control controller. And after the comparison of the authorized start-stop time passes, reading the region coding information in the access control card memory, and if the region coding information in the access control card is consistent with the current access control controller coding information, closing an unlocking relay, and prompting a user to normally swipe the card by using a state indicator lamp and a buzzer. And simultaneously writing the card swiping information into an access card memory and an access controller local memory. Writing access card entrance guard event information including card reader time and entrance guard controller serial number; the access control event information written into the local memory of the access control device comprises the time of a card reader and the number of an access control card.
Claims (5)
1. A high-efficiency and safe access control device of a power distribution station room comprises a panel (1) arranged at the front part, a cover plate (4) arranged at the rear part, a radio frequency card reading module (2) and an access control controller main board (3) which are arranged between the panel (1) and the cover plate (4); the method is characterized in that: the radio frequency card reading module (2) is provided with an RC522 non-contact type read-write card chip (21), a 13.56MHz antenna and matching circuit (22) connected with the RC522 non-contact type read-write card chip (21), a clock circuit (23) of the RC522 and an SPI port communication interface (24), wherein the SPI port communication interface (24) is connected with the access controller mainboard (3) to realize the communication between the radio frequency card reading module (2) and the access controller mainboard (3); the door access controller comprises a door access controller mainboard (3), a microcontroller MCU (31), an MCU communication interface (32) connected with the microcontroller MCU (31), an MCU memory (33), an MCU clock circuit (34), a large area and small area coding module (35), a Bluetooth wireless communication module (36) and an electric control lock driving module (37) in signal connection with an electric control lock, wherein the door access controller mainboard (3) is provided with the microcontroller MCU (31); the door is characterized in that positions between the panel (1) and the cover plate (4) except for the radio frequency card reading module (2) and the access controller main board (3) are filled with organic silicon electronic pouring sealant, the cover plate (4) is a U-shaped cover plate, and a protruding portion of the U-shaped cover plate is fixed on the door body.
2. The efficient and safe access control device for the power distribution station room as claimed in claim 1, wherein: the RC522 non-contact read-write card chip (21) is a core component of an entrance guard radio frequency card reading module, and the RC522 non-contact read-write card chip (21) integrates a passive non-contact communication mode and a passive non-contact communication protocol under a 13.56MHz communication frequency band; and supports multi-layer applications of ISO14443A and the fast crypt 1 encryption algorithm.
3. An efficient and safe access control device for a power distribution station room as claimed in claim 1 or 2, wherein: the transmitter part inside the RC522 non-contact read-write card chip (21) can drive the reader-writer antenna to communicate with the ISO14443A/MIFARE card and the transponder; the receiver portion of the C522 contactless read-write card chip (21) contains demodulation and decoding circuitry for processing ISO14443A compliant transponder signals; the digital part inside the RC522 non-contact read-write card chip (21) processes ISO14443A frames and error detection.
4. The efficient and safe access control device for the power distribution station room as claimed in claim 1, wherein: the electric control lock adopts an unlocking relay, and the microcontroller MCU (31) is also connected with a state indicator lamp (38) and a buzzer (39).
5. The efficient and safe access control device for the power distribution station room as claimed in claim 1, wherein: microcontroller MCU (31) be connected with the power, the power adopt commercial power and battery backup, when the commercial power has a power failure, choose battery backup for use and supply power for entrance guard's device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221336759.3U CN217521615U (en) | 2022-05-31 | 2022-05-31 | High-efficient safe access control device for power distribution station room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221336759.3U CN217521615U (en) | 2022-05-31 | 2022-05-31 | High-efficient safe access control device for power distribution station room |
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| Publication Number | Publication Date |
|---|---|
| CN217521615U true CN217521615U (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221336759.3U Active CN217521615U (en) | 2022-05-31 | 2022-05-31 | High-efficient safe access control device for power distribution station room |
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| Country | Link |
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| CN (1) | CN217521615U (en) |
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- 2022-05-31 CN CN202221336759.3U patent/CN217521615U/en active Active
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