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The overall design principle of the system design is based on modern computer network communication and large-scale database technology, based on a unified information management platform to establish an IC card prison nutrition consumption management system. When designing the system, the selection of hardware equipment and the selection of physical links give priority to the most advanced and general equipment at present, so as to ensure the follow-up maintainability of the system construction and the advanced nature for a long period of time to the greatest extent.
The system adopts the server and multi-client mode, one card issuer makes real-name card issuance, multi-point clients do not have card recharge, hand-heldPOS machineOffline consumption mode, real-time update of the data on the handheld and the background server through manual operation. The function realization process of this system is as follows:
1. Query the commodity list: The staff will uniformly deliver the daily necessities to the prisoner’s living area, and the prisoner can freely choose the daily necessities. The staff will search according to the commodity list on the handheld, press the up and down keys to determine the name of the product, and then press the OK key ;Handheld provides card amount query function
2. Deduction of money: The prisoner put the card on the handheld and swiped the card to deduct the money successfully.
3. Collect data: The staff uploads the data on the handheld POS machine to the background computer through the serial port or USB interface, and keeps it updated in real time
4. Report query: The background client provides more detailed and rich report query, simple and direct, such as the summary of the prisoner’s consumption details
5. Recharge: After real-name recharge through the background software, the background is updated in real time with the handheld POS machine through the serial port or USB interface, and the recharge list is downloaded to the handheld.
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