Embedded IC (integrated circuit) card reader-writer based on CAN (controller area network) technology and ARM (advanced RISC (reduced instruction-set computer) machines) technology

Abstract

The invention discloses an embedded IC (integrated circuit) card reader-writer based on a CAN (controller area network) technology and an ARM (advanced RISC (reduced instruction-set computer) machines) technology, wherein a central core mainboard is taken as the center to be connected with a connecting CAN modules, two LCDs (liquid crystal displays), a power supply management center module, a radio frequency antenna board module, an audio output module and a keyboard control module. According to the embedded IC card reader-writer, the CAN bus technology replaces the original RS485 (recommended standard 485) or RS422 bus network to transmit data, so as to overcome the defect that the real-time consumption processing requirement can not be met due to the network bottleneck and solve the problem that the system reliability is poor; moreover, the ARM processor technology replaces the original 51-series singlechip technology to add the business processing capacity of a POS (point of sale) machine, so as to improve the update rate of a white list and a storage space of the data.

Description

technical field [0001] The invention relates to applications in the field of Internet of Things terminals such as smart campuses and one-card cards for digital campuses. Background technique [0002] In recent years, with the further acceleration of the information construction of Internet of Things terminals and one-cards, smart cities, smart campuses and digital campus one-cards have been widely used. Especially as a consumer terminal IC card reader for the campus card, due to the special environment of the school, there are many people swiping the card, a large amount of data, intensive transactions, and high real-time requirements. Therefore, various manufacturers generally use 51 series single-chip microcomputers as the central processing unit of IC read-write machines, and use RS485 or RS422 bus to communicate with the host computer for data. Even so, with the improvement of school information management requirements and the expansion of school scale, the application ...

AI Technical Summary

Problems solved by technology

[0003]1. Due to the network transmission data of RS485 bus, the network bottleneck is caused, which cannot meet the requirements of real-time consumption processing

[0004]2. Due to the network transmission data of the RS485 bus, the network bottleneck is caused, so that the white list information of the cardholder to report the loss of the card cannot be updated in time

[0005]3. Due to the network transmission data of RS485 bus, the network bottleneck is caused, and the payment of subsidies cannot be sent to the POS machine in time, which brings inconvenience to consumers

[0006]4. The 51 series single-chip microcomputer of the terminal POS machine limits the business logic processing capability and affects the update rate of the white list

[0007]5. Problems with individual nodes in the network may easily cause the bus to be in a "deadlock" state, resulting in poor system reliability

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