Automatic GNSS (global navigation satellite system) vehicle-mounted terminal testing device

Abstract

The invention provides an automatic GNSS (global navigation satellite system) vehicle-mounted terminal testing device. The device comprises an MCU (microprogrammed control unit), a power conversion module, a communication port, an input circuit and an output circuit, wherein the power conversion module is connected with the MCU and a related part and is used for converting input voltage ranging from 9V to 36V to voltage needed by all the units for output; the MCU is connected with a tested terminal and an upper computer through the communication port and is communicated with the tested terminal and the upper computer through the communication port; the input circuit is connected with the MCU and is used for detecting signals output by the tested terminal and dividing the signals into analog quantity signals and switching signals for input; the output circuit is connected with the MCU and is used for outputting the signals to the tested terminal, the output signals are classified into analog quantity signals and switching signals for output, the switching values are vehicle switch signals such as ACC (adaptive cruise control) signals, DOOR- signals, brake signals and steering lamp signals, and the analog quantity is voltage signals of the tested terminal. Compared with the prior art, the automatic GNSS vehicle-mounted terminal testing device can substantially improve the production detection efficiency of the GNSS vehicle-mounted terminal and improve the failure detection accuracy on a site, thereby greatly reducing the labor cost.

Description

technical field [0001] The invention relates to a test device, in particular to a GNSS vehicle-mounted terminal automatic test device. Background technique [0002] Vehicle-mounted equipment such as GNSS terminals, driving recorders, and anti-theft devices need to pass ICT (automatic online tester) and AOI inspection (automatic optical inspection) during the production of PCBA to ensure PCBA processing and the quality of components on the PCBA, but the communication module , GNSS modules and other components cannot be detected by these methods, and these detection methods cannot guarantee whether the product is functioning normally. Usually, it is necessary to manually perform a full-function test through a functional test stand and other equipment. However, as the vehicle-mounted GNSS terminal equipment has more and more functions and becomes more and more complex, the efficiency of manual full-function testing is very low, and human misjudgments and missed tests are prone ...

AI Technical Summary

Problems solved by technology

[0003] For this reason, the object of the present invention is to provide a kind of GNSS vehicle-mounted terminal automatic test device, to solve the low test efficiency existing in the current manual full-function test, prone to human misjudgment and missed test, and the problem that the on-site fault is difficult to quickly and accurately determine

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