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Method and structure for protecting electronic detonator circuit

An electronic detonator and circuit protection technology, applied in offensive equipment, weapon accessories, fuzes, etc., can solve problems such as confusion, electronic detonator circuit damage logic, inability to solve, etc., to improve safety performance, protect electronic components, and prevent interference. Effect

Pending Publication Date: 2019-01-11
BEIJING QAML OF SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot solve the problem of stray current, induced voltage, or detonator safety accidents caused by induced lightning strikes.
[0005] At present, most electronic detonators adopt the cutting-edge discharge principle to achieve similar anti-static effects, but the induced voltage and induced current generated by various equipment at the detonation site may damage the internal circuit of the electronic detonator or cause logic confusion.

Method used

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  • Method and structure for protecting electronic detonator circuit
  • Method and structure for protecting electronic detonator circuit
  • Method and structure for protecting electronic detonator circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] as attached figure 1 : The structure for protecting the electronic detonator circuit, including semiconductor discharge tube A 1, chip capacitor C12, chip capacitor C2 3, chip resistor R1 4, chip resistor R2 5, ground shrapnel 6, electronic detonator circuit board 7, Foot wire input end 9, module control circuit D 10, wherein foot wire input end 9, module control circuit D 10 are connected, and between foot wire input end 9 and module control circuit D 9, insert semiconductor discharge tube A 1, patch Capacitor C1 2, chip capacitor C2 3, chip resistor R1 4, chip resistor R2 5, ground shrapnel 6.

[0029]Among them, the semiconductor discharge tube A 1 is connected in parallel to the foot line input terminal 9 of the electronic detonator circuit board 7, the semiconductor discharge tube A 1 is connected to the chip capacitor C1 2, the chip capacitor C2 3, the chip resistor R1 4, and the chip resistor R2 5 in parallel, chip capacitor C1 2, chip capacitor C2 3, chip resi...

Embodiment 2

[0033] as attached image 3 : The structure for protecting the electronic detonator circuit, including semiconductor discharge tube A 1, semiconductor discharge tube B 8, electronic detonator circuit board 7, pin line input terminal 9, grounding shrapnel 6, module control circuit D 10, wherein the pin line input terminal 9. The module control circuit D 10 is connected, and the semiconductor discharge tube A1, the semiconductor discharge tube B 8 and the ground shrapnel 6 are connected between the pin line input terminal 9 and the module control circuit D 10 .

[0034] Wherein, the semiconductor discharge tube A 1 and the semiconductor discharge tube B 8 are connected in parallel to the foot line input end 9 of the electronic detonator circuit board 7 after being connected in series, the grounding shrapnel 6 and the electronic detonator circuit board 7 are connected to the connection point N 702, and the grounding shrapnel 6 conduction with the basic shell through the contact p...

Embodiment 3

[0037] as attached Figure 5 , The electronic detonator circuit protection structure, including semiconductor discharge tube A 1, semiconductor discharge tube B 8, electronic detonator circuit board 7, foot wire input end 9, ground shrapnel 6, module control circuit D 10, wherein foot wire input end 9, The module control circuit D10 is connected, and the semiconductor discharge tube A1, the semiconductor discharge tube B8, and the grounding shrapnel 6 are connected between the foot wire input terminal 9 and the module control circuit D10.

[0038] Wherein, the semiconductor discharge tube A 1 is connected in parallel to the pin line input end 9 of the electronic detonator circuit board 7, the grounding shrapnel 6 and the semiconductor discharge tube B 8 are connected to the electronic detonator circuit board 7 through the connection point P 703, and the grounding shrapnel 6 passes through The contact piece 601 is in conduction with the base case.

[0039] The electronic deton...

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PUM

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Abstract

The invention provides a method and a structure for protecting an electronic detonator circuit. A semiconductor discharge tube is connected between two ends of a wire input terminal on an electronic detonator circuit board; the semiconductor discharge tube is switched off and the electronic detonator circuit works normally, when the voltage in the electronic detonator circuit is within a stable safety range; the semiconductor discharge tube is broken down and switched on, so as to prevent electronic elements on the electronic detonator circuit from being damaged and generating sparks under theeffect of high voltage or large instantaneous current, when the voltage in the electronic detonator circuit is beyond the stable safety range. The invention creatively proposes using the semiconductor discharge tube with ultralow on resistance for receiving various interference signals of the electronic detonator wire. The semiconductor discharge tube can be quickly switched on for protecting thenormal running of other circuit elements when a crest voltage is above a certain voltage.

Description

technical field [0001] The invention relates to the technical field of pyrotechnics, in particular to a method and a structure for protecting an electronic detonator circuit. Background technique [0002] The electronic detonator has been widely used in China. It is generally a metal round tube with a wall thickness of about 0.3mm as the detonator body, and its outer diameter is about 6.5-8mm. The electronic control module is installed in the metal tube and protected by it. Compared with traditional products, electronic detonators have precise time delay and high safety, but in the process of use, they have exposed the defect of high rejection rate under certain circumstances, especially when the distance between blastholes is less than 30cm. The combined action of the first-exploded detonator, explosives and rocks will generate a strong electromagnetic interference signal. Such an interference signal is introduced into the electronic detonator by the two legs of the unexplo...

Claims

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Application Information

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IPC IPC(8): F42C19/12
CPCF42C19/12
Inventor 刘红文梁凯吴志永王成
Owner BEIJING QAML OF SCI & TECH CO LTD
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