A Bluetooth serial port data transmission method between a police ring or police palm and a law enforcement recorder

Abstract

The invention relates to a Bluetooth serial port data transmission method between a police ring or a police palm and a law enforcement recorder. The Bluetooth serial port data transmission method comprises the following steps: S1, a host uses a serial port protocol to package application layer data to be sent and broadcast the same; and S2, a receiver analyzes the data after receiving the same and processes the successfully verified data, wherein when needing to package the package application layer data to be sent, the serial port protocol packages link layer data at the same time, the link layer data comprise a token ring, the host switches the current token ring ID to the current token once sending a broadcast frame, the token ring ID is circulated in all slave addresses, and only one slave has the token ring at any moment and has the rights of sending information to the host. The Bluetooth serial port data transmission method provided by the invention has the advantages that: the token ring is circulated in all slaves, so each slave will not send a command at the same time, and thus, no conflict is generated in the case of simultaneous of serial port information interaction of one host and a plurality of slaves.

Description

technical field [0001] The invention relates to the Bluetooth serial port data interaction between the police ring or the police palm and the law enforcement recorder, in particular to a serial data transmission method between the police ring or the police palm and the law enforcement recorder. Background technique [0002] With the popularity of wristbands and mobile devices, police rings and police palms have also begun to appear in the law enforcement industry. As a device worn by law enforcement officers, single police body worn cameras are very necessary to interact with police rings or police palms, such as police rings or The police palm transmits GPS data, police information and remote control commands to the law enforcement recorder through the Bluetooth serial port, and the law enforcement recorder receives relevant command information from the Bluetooth serial port for processing and response. [0003] Since the wearing distance of the police ring and the single p...

AI Technical Summary

Problems solved by technology

[0003] Since the wearing distance of the police ring and the single police body worn recorder is relatively close, they can communicate through Bluetooth. Due to the conflict of simultaneous mounting and transmission of machines, a dispute resolution mechanism is needed to coordinate

Moreover, due to the characteristics of serial port transmission and possible external interference, data loss or incompleteness will also be caused, which poses a threat to data reliability.

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