12 Years RFID hardware manufacturers Specialized in RFID Device Solution. - SPEEDWORK
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12 Years RFID hardware manufacturers Specialized in RFID Device Solution. - SPEEDWORK
Customs locks are a tool for supervisory units, logistics companies to grasp real-time logistics trends in order to improve the efficiency of customs clearance or inspection; it is also a tool for customs to detect the security of transit goods and transport of customs-supervised goods as well as to ensure the security of goods in the transport process. In helping to protect the safety of the user's property at the same time, to provide a special customs locking method to help customs staff to check and track the goods.
Currently on the market using traditional customs logistics locks. Traditional customs logistics lock is out of the customs lock, into the customs unlock; through the GPRS wireless network system, the whole process of cargo transport location information to achieve uninterrupted real-time monitoring, real-time alarm. The traditional customs logistics lock more GPS technology, unlocking method for the more traditional wheel password, and does not have other functions, too single, not only the security of a great hidden danger, consumers for the opening of the customs lock can not be known, can not meet the existing demand for use. Therefore, this paper combines the existing level of technology and the current market situation, the design of intelligent customs locks based on the Beidou positioning system, relative to the GPS system, Beidou satellite system in the guarantee of security under the premise of accuracy; at the same time increased a variety of ways to open and close the locks with a convenient checking and monitoring mechanism for the Customs system as well as the work of the logistics company to provide further technical support.
For customs inspection, RFID technology is used instead of the traditional key to unlock the door, and RC522 RF module is used to achieve this. After the RF module recognises the IC card and carries out anti-collision processing, when it judges that the ID number is consistent with the system settings, it can generate an output signal and transmit it to the STM32F407 microcontroller to convert the output signal into a command signal, and the PWM unit inside the STM32F407 microprocessor roots the command signal. The output signal is converted into command signal, and the PWM unit inside the STM32F407 microprocessor generates PWM signal according to the command signal. The PWM unit inside the STM32F407 microprocessor generates PWM signals according to the command signals and drives the servo to rotate so as to achieve the unlocking action. The PWM unit inside the STM32F407 microprocessor generates PWM signals according to the command signals and drives the servo to rotate, so as to unlock the door.
Due to the specific system composed of RF card reader module and inductor, the RF card internal code signal is unique and cannot be copied. As the RF card reading module and the inductor body constitute a specific system, the internal code signal of the RF card is unique and cannot be copied, so the RF card can eliminate illegal copying and guarantee the security of goods. code, to protect the security of goods at the same time, but also for a variety of control systems to adopt the information management way to create the conditions.
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