Universal tester for testing fire work equipment

Abstract

The present invention discloses a universal tester for testing fire work equipment. The universal tester comprises a differential input operational amplifier unit, a signal acquisition unit, an electrical isolation unit, a microprocessor control unit, a relay matrix module, a man-machine interaction module and a constant-current source unit. The differential input operational amplifier unit is sequentially and electrically connected with the signal acquisition unit, the electrical isolation unit, the microprocessor control unit and the man-machine interaction module. The relay matrix module is respectively and electrically connected with the differential input operational amplifier unit and to-be-tested fire work equipment. The man-machine interaction module is connected with a remote control terminal through a wired network or a wireless network. The universal tester is provided with a 16-bit high-precision A / D converter, thus being high in data resolution and capable of effectively improving the small-resistance measurement accuracy of fire work equipment. The universal tester is also provided with a temperature-compensated high-precision constant-current source unit and is capable of supplying a stable and reliable safety current to the to-be-tested fire work equipment.

Description

technical field [0001] The invention relates to the technical field of testers for pyrotechnic devices. More specifically, it relates to a universal tester for pyrotechnic devices. Background technique [0002] The measurement of the pyrotechnic device is one of the important steps in the comprehensive test of the missile, and the measurement result is an important parameter related to whether the missile can be launched and flew normally. Among them, the resistance value of the pyrotechnic device is relatively small, which requires high test accuracy, and the measurement of the pyrotechnic device requires small current and isolation measurement to ensure the safety of the measurement. In the prior art, in the measurement of pyrotechnic devices, a special cable network and switch switching are generally used, and the two ends of the corresponding pyrotechnic devices are introduced into professional test instruments for resistance measurement, which has the following disadva...

AI Technical Summary

Problems solved by technology

[0003] (1) Poor versatility and compatibility: the missile pyrotechnic device measurement equipment used in the prior art is a tailor-made device according to the characteristics of a specific pyrotechnic device and the characteristics of the electrical interface, and the number of measurement channels and measurement accuracy are different. Poor versatility and compatibility;

[0004] (2) The measurement error is relatively large: the measuring equipment in the prior art mostly adopts the two-wire measurement method with a built-in three-purpose meter, which introduces the resistance value of the test loop cable, which affects the measurement accuracy and measurement efficiency;

[0005] (3) Low degree of test automation: Most of the pyrotechnic device measurement equipment in the prior art is manually read and recorded measurement data, and the test channel and measurement range are switched manually, so the degree of automation and reliability are low;

[0006] (4) Low safety: Most of the pyrotechnic device measurement equipment in the prior art is measured locally in the pyrotechnic device, and does not have remote measurement and control functions, which increases the danger of the measurement personnel

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