Wireless isolation serial communication interface test system having voltage detection

Abstract

The invention relates to a wireless isolation serial communication interface test system having voltage detection, and belongs to the technical field of an electrical communication interface test. The test system includes a data processing and displaying terminal, a test connector, and a wireless communication assembly connecting the data processing and displaying terminal and the test connector. The test connector is formed by a probe, a signal conditioning circuit, an AD sampling circuit, a local measuring algorithm, a serial port communication interface circuit, a anti-over-current driving circuit, a relay, and a data transceiver and test protocol. The over-voltage and over-current are avoided by employing the voltage detection. The wireless isolation realizes the separation of the test connector and terminals for signal detection and communication connection. The volume of the test connector decreases. The demand of the terminal electrical properties is reduced, and the on-site operation is convenient.

Description

technical field [0001] The invention relates to a wireless isolation serial communication interface testing system with voltage detection, which belongs to the technical field of electrical communication interface testing. Background technique [0002] Electrical testing tools are necessary devices for the research and development of electrical equipment, as well as related product production testing and on-site repair and maintenance. There are a large number of communication interfaces between electrical equipment components, and testing tools for electrical equipment communication interfaces are also very important. Serial communication interfaces such as CAN bus or 485 bus interface have only two signal lines because of their small number, so they are widely used in electrical equipment and become an important channel for equipment function testing and inspection. However, the installation locations of the equipment are different, and the on-site detection lines often h...

AI Technical Summary

Problems solved by technology

However, the existing technical reports are only used for the measurement of the grid signal, and have not been applied to the electrical communication interface test

The current existing electrical communication interface test system, because no effective voltage detection and electrical isolation measures are used, often causes overvoltage and overcurrent of the test equipment and its terminals due to a short circuit of the communication line or an internal fault of the equipment, resulting in the failure of the test equipment. Damaged and scrapped

At the same time, the test equipment that does not use wireless isolation, that is, the equipment that integrates the signal detection front end and the terminal, if the display terminal screen is large, it is not portable enough for on-site use, and if the display terminal screen is small, it is inconvenient to observe

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