The supermarket locker is a new type of supermarket locker based on the combination of traditional smart supermarket locker technology and even the combination of communication tools.
The supermarket locker system utilizes the main controller to control infrared detection, solenoid valve switching, power failure protection and alarm functions. Since the MCU is limited by the number of pins, the data line and the address line are multiplexed, and are used by the P0 port. In order to separate them, in order to properly connect with the expansion chip outside the MCU, the address latch 74LS373 needs to be added outside the MCU , and the I/O port expansion chip 8255A is used to realize the connection between each module and the MCU, such as display. and presses the start button input module, system startup, the master controller and each module is initialized, supermarkets lockers automatic tank sensor detects the presence of the article and transmits a signal to the main controller, then the number of empty liquid crystal display. when the keyboard wherein When a key is pressed, the main controller receives an electrical signal, controls the corresponding solenoid valve to open the door, and can generate a set of 8 -bit random passwords. The system receives a random code to generate an electronic barcode. The password is valid once and has three fault tolerance and unlock functions. When the identifier detects that a bar code scan enters its detection range, the bar code is scanned, and a set of electrical signals are generated by analog-to-digital conversion and sent to the single-chip microcomputer to control the action of the electromagnetic valve. When the stop button is pressed, the system is powered off and stops working.
The supermarket locker control system is adopted. This system selects the optimized non-contact as the electronic key, and has the safety advantage that it cannot be copied, and provides the user with high-accuracy and high-efficiency access service. The user can pay attention to the public number QR code on the cabinet, and then the public number will push an electronic one-dimensional code, the box door will pop open, and the customer will perform the deposit function. When taking the object, also scan the QR code of the public number to pick up the object.
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