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On-off target passing signal conditioning and checking device

A technology of signal conditioning and verification device, which is applied in the direction of ammunition testing, offensive equipment, ammunition, etc., can solve the problems of high false alarm probability and unguaranteed trigger probability, and achieves reduction of false alarm probability, low false alarm probability, and elimination of false alarms. effect of noise

Active Publication Date: 2018-08-10
NANJING UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0005] In short, the problems existing in the existing technology are: the trigger probability of the on-off target passing signal conditioning and verification device is not guaranteed, and the probability of false alarm is high

Method used

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  • On-off target passing signal conditioning and checking device

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Embodiment Construction

[0016] Such as figure 1 As shown, the on-off target passing signal conditioning verification device of the present invention includes a CPLD verification control unit 1 and a signal conditioning unit 2;

[0017] The CPLD verification control unit 1 is used to use CPLD to generate 32 groups of monopulse signals to verify the accuracy of system time interval measurement, and the monopulse signals are two groups of each group, and the time interval between signals must;

[0018] The signal conditioning unit 2 is used to condition the output signal of the external input pulse signal and the CPLD by setting the comparator threshold level, eliminate the influence of noise in the circuit, and avoid false triggering;

[0019] The output terminal of the CPLD verification control unit 1 is connected with the input terminal of the signal conditioning unit 2 .

[0020] still as figure 1 As shown, the CPLD verification control unit 1 includes a CPLD programmable logic device module 11, ...

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Abstract

The invention discloses an on-off target passing signal conditioning and checking device which comprises a CPLD checking control unit (1) and a signal conditioning unit (2). The CPLD checking controlunit (1) is used for producing 32 sets of single-pulse signals through a CPLD so as to check the system time interval measuring accuracy. Two paths of single-pulse signals are included in each set, and the time interval between the signals is certain. The signal conditioning unit (2) is used for conditioning external input pulse signals and CPLD output signals by setting a comparator threshold level, eliminating noise influences in a circuit and avoiding spurious triggering. The output end of the CPLD checking control unit (1) is connected with the input end of the signal conditioning unit (2). According to the on-off target passing signal conditioning and checking device, the triggering probability is ensured, and the false alarm probability is low.

Description

technical field [0001] The invention belongs to the technical field of flying object speed measurement equipment, in particular to an on-off target passing signal conditioning and verification device with guaranteed trigger probability and low false alarm probability. Background technique [0002] On-off targets are used to test the initial velocity and density of flying objects in the production and acceptance tests of guns, cannons, projectiles and propellants. They are also used to test the speed of simulated flying objects in the development of bulletproof and aviation materials, and to test the impact strength of materials. Its application fields involve weapon production, public security bulletproof, aviation materials, People's Liberation Army and armed police, etc. [0003] At present, the mainstream method for measuring the flight time of flying objects within a certain distance is the contact method. Due to the high speed of the flying object, the flight time betw...

Claims

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Application Information

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IPC IPC(8): F42B35/02
Inventor 庄志洪李世程王宏波李寒叶蒙蒙金煌煌
Owner NANJING UNIV OF SCI & TECH
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