A Method for Accurately Determining Dynamic Threshold Parameters of High-voltage Detonator Detection Circuit

Abstract

The invention relates to a method for accurately determining a dynamic threshold parameter of a high-pressure detonator detection circuit. The method comprises the following steps: establishing a computational formula of resistance in a threshold detection circuit, calculating to obtain resistance values of R2 and R3, measuring actual threshold values VT1 and VT2, calculating a difference betweenan actual measurement threshold value and a theoretical threshold value, correcting the theoretical threshold value via the difference, and returning the corrected theoretical threshold value to calculate the resistance values of R2 and R3 again; adjusting the resistance values of R2 and R3, measuring and verifying the actual threshold values VT1 and VT2 again, wherein the verification result canmeet a required threshold error; and adjusting an analog feedback voltage signal of a precise DC stabilized power supply, so that the output voltage thereof changes between VT1 and VT2, and observingthat the output of a logic decision circuit can accurately and dynamically flip at two threshold points. Compared with the prior art, the method is more accurate, and a favorable premise is provided for the accurate detection and performance evaluation of the high pressure detonator; and it is conducive to minimizing the test equipment, reducing the cost and facilitating the onsite inspection.

Description

technical field [0001] The invention relates to a method for accurately determining the parameters of a dynamic threshold detection circuit of a high-voltage detonator, which is suitable for testing and performance evaluation when inspecting special power sources such as high-voltage detonators. Background technique [0002] Usually, when the high-voltage detonator circuit is working, the high-voltage converter will recharge the high-voltage energy storage capacitor continuously, so that the voltage of the high-voltage capacitor is always maintained within the minimum voltage required for the detonator to detonate 100% and its allowable upper and lower error ranges. In fact This part is also a special power supply. The high-voltage feedback circuit samples the voltage on the high-voltage capacitor. When the voltage on the high-voltage capacitor exceeds the upper limit voltage value, the threshold detection and judgment control circuit stops outputting the dynamic frequency s...

AI Technical Summary

Problems solved by technology

In the past, when the special test equipment tested the high-voltage detonator, the detection circuit parameters lacked theoretical calculations, which led to the blindness of the actual debugging. Inspection and performance evaluation. This mode has a large system framework, high cost, and low reliability, which is not conducive to on-site inspection of products, etc.

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