Delayed detonation control circuit

Abstract

The invention discloses a delayed detonation control circuit, which comprises a charging circuit, a discharging circuit, a protection circuit and a functional circuit. The charging circuit includes an energy storage element for storing energy after receiving the current signal; the discharging circuit includes a first switch circuit for connecting the electric detonator, and when the first switch circuit is turned on, the energy stored in the energy storage element The energy inside is discharged into the electric detonator through the first switch circuit, so as to realize remote control and detonation of the instantaneous detonator; the functional circuit includes a programmable device, through which the delay conduction time of the first switch circuit can be flexibly set , the delay accuracy is high; in addition, the protection circuit also includes a second switch circuit, and when the first switch circuit is in the cut-off state, the second switch circuit is turned on, and the energy stored in the energy storage element passes through the second switch circuit The discharge effectively ensures that the electric detonator will not be falsely triggered when the first switch circuit is in the cut-off state.

Description

technical field [0001] The invention relates to a delay detonation control circuit. Background technique [0002] At present, the detonators used in China include electric detonators and nonel detonators. Among them, according to the delay function, the electric detonator is divided into instantaneous detonator, fixed segment delay electric detonator and electronic digital detonator, etc., and the nonel detonator is divided into prompt nonel detonator and fixed segment delay nonel detonator. . The fixed-level delay detonator is a delay function realized by adding other delay bodies on the basis of the instant detonator. Due to the error of the delay body, its accuracy is difficult to guarantee. At the same time, due to the constraints of production factors, only fixed-rank products can be produced. The electronic digital detonator is to package the electronic chip and the detonator together. Through online programming during construction, each detonator is given specific ...

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Problems solved by technology

[0003] With the continuous improvement of domestic blasting theory and technology, time-delay blasting has been widely used. However, the above-mentioned several time-delay detonators have the following technical problems in practical application: (1) The prompt detonator is compatible with the fixed-stage time-delay detonator. In combination, when encountering different hole depths or complex geological environments, there is often no suitable fixed segment to choose. At the same time, due to the poor accuracy of the delay detonator at the fixed segment, there is a large deviation from the theoretical calculation during blasting, so it is impossible to obtain good results. (2) The use of electronic digital detonators has high precision, and can delay each hole arbitrarily according to the theoretical design, so the blasting effect is better. The use is subject to greater restrictions

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