Interface General Adaptation Combination and Signal Path Planning Method Based on the Combination

Abstract

The invention discloses a large-scale interface general adaptation combination and a signal path planning method based on the adaptation combination, which adopts a row matrix switch of 32 columns*8 rows and n blocks of column matrix switches of 8 columns*32 rows to be connected back to back , the common 8 channels are used as the 8 channels of the analog bus to form a switch network based on the analog bus 32*32n, which improves the scale and expansion capability of the adaptation combination; setting a matching resistance selection circuit in the switch network allows users to select according to the test equipment and The load attribute selects resistors with different resistance values ​​to connect to the circuit to enhance the impedance matching between the instrument and the load; the path planning method of the universal adaptation combination of the interface provided by the present invention selects the channel with the least number of times in each path planning, and balances the The number of uses of the switches is controlled in each channel, thereby extending the service life of the entire switching network.

Description

technical field [0001] The invention relates to the technical field of automatic testing, in particular to a large-scale interface general adaptation combination and a signal path planning method based on the adaptation combination. Background technique [0002] With the emphasis on the application of ATE to strengthen the maintenance and support of equipment by various military branches, and the development trend of ATE towards miniaturization, integration and generalization, ATE (Automatic Test Equipment) equipment will test various signal types and various If there is a circuit unit with a connector interface, the problem of interface adaptation will become more and more prominent. In the past, automatic test equipment used a UUT (Unit Under Test) to configure an adapter board. If this method is used to complete the test of electronic equipment such as radar, it will need to configure thousands of adapter boards. The quantity is extremely large, and the adaptation cost i...

AI Technical Summary

Problems solved by technology

At present, the industry is researching the universal technology of application interface adaptation. Basically, the automatic switching of signals is realized through matrix switches, but the scale of signal routing is small and the degree of automation is low. At the same time, there are various signals of circuit units, especially various digital signals. And pulse signals, which have high requirements on the bandwidth of the signal channel, these problems may seriously affect the application of ATE in the field of circuit unit testing

Images