High fault tolerance real-time signal acquisition system based on Bluetooth communication

A bluetooth communication and real-time signal technology, which is applied in the near-field transmission system, transmission system, digital transmission system and other directions of using transceivers, can solve the problems of automatic search, inability to accurately collect signal trigger time and fault tolerance, etc., and achieve high Effects of Fault Tolerant Signal Acquisition

Inactive Publication Date: 2014-01-15
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a highly fault-tolerant real-time signal collection system based on Bluetooth communication, which can overcome the deficiencies of the prior art that cannot accurately collect signal triggering time and weak fault tolerance, and at the same time overcome the inability of the prior art to automatically Insufficient to find, pair, and connect Bluetooth devices

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  • High fault tolerance real-time signal acquisition system based on Bluetooth communication

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Embodiment Construction

[0019] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0020] Such as figure 1 As shown, this embodiment mainly includes a master device, a slave device and a custom Bluetooth protocol.

[0021] Connect the signal source from the device to the external interrupt pin of the embedded MCU. The MCU uses the interrupt method to collect the signal and its trigger time, and connects the Bluetooth TX, RX to the serial port pin of the MCU, and burns into the MCU including heartbeat detection, signal Acquisition and packaging, the program of the anti-lost communication mechanism, can be controlled by the MCU to send and receive Bl...

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Abstract

The invention discloses a high fault tolerance real-time signal acquisition system based on Bluetooth communication. The system comprises a slave device which acquires a signal, a main device which receives and processes the signal and a customized Bluetooth communication protocol. When the system acquires the signal, accurate time of signal triggering can be calculated. The slave device is responsible for acquiring the signal and triggering time, and communicates with the main device through the customized Bluetooth communication protocol. The main device is responsible for automatic searching, pairing and connection with the slave device, acquiring signal accurate triggering time through calculating present communication delay, determining problems of packet loss, packet error and the like. The customized Bluetooth communication protocol shields signal interference in practical application through heartbeat detection and delay measurement, signal data packaging, a packet loss prevention communication mechanism and the like.

Description

technical field [0001] The invention relates to a signal acquisition system based on bluetooth communication, in particular to a signal acquisition system for high fault tolerance and precise capture of signal triggering time. Background technique [0002] In many application scenarios, while using embedded devices to collect signals, it is also necessary to collect the precise moment of the signal trigger, send it to the computer in real time through wireless communication technology, and try to solve the problem of packet loss and error in communication as much as possible. Bluetooth is a relatively mature wireless communication technology at present, but there will still be signal loss problems during the transmission process, and the communication will cause a certain delay. Testing the most widely used CSR Bluetooth chip on the market, it is found that when the communication frequency is high enough, there will be obvious packet loss problems, and due to the influence o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B5/02H04L1/00
Inventor 肖双九何轩洪琛陆飞施梦玮
Owner SHANGHAI JIAO TONG UNIV
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