Adjustable electronic detonator control chip and flow for controlling same

Abstract

The invention provides an adjustable electronic detonator control chip. A clock circuit of the chip is a RC oscillator; and a logic control circuit comprises a programmable delay module, an input / output interface, a serial communication interface, a prescaler, a central processor, and a counter. One end of the counter is connected with the power output end of a power management circuit; one end isearthed; one end is connected with the central processor through an internal bus; and the other end and the central processor, the programmable extension module and the prescaler are connected and are connected with the RC oscillator together. The invention also provides a chip controlling flow which comprises a plurality of implementing proposals including a synchronous learning course, a clockadjusting course, a state re-reading course, a writing delay time course, an ignition course and other sub-flows. The technical proposal realizes the electronic detonator control chip with good shockresistance and integratability and enough time delay precision, thereby realizing an electronic detonator with high time delay precision.

Description

technical field [0001] The invention relates to the technical field of pyrotechnics manufacturing, in particular to a calibrated electronic detonator control chip and its control process, which are both shock-resistant, integrable, and high-delay precision. Background technique [0002] In the 1980s, Japan, Australia, Europe and other developed countries began to study electronic detonator technology. With the rapid development of electronic technology, microelectronic technology and information technology, electronic detonator technology has made great progress. In the late 1990s, electronic detonators began to be put into application testing and marketing. [0003] As the core component of the electronic detonator, the performance of the electronic detonator control chip directly affects the performance of the electronic detonator. The electronic detonator control chip given in the patent application documents 200820111269.7 or 200820111270.X and the patent ZL03156912.9 ...

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the fact that in the actual blasting application of electronic detonators, the delay time of each detonator is not the same, therefore, the first detonator will produce an explosive impact on the unexploded detonator

And because the crystal relies on its mechanical resonance to output a stable frequency to generate a clock, so when the reference clock circuit is taken as a crystal oscillator, the blasting shock wave will affect the resonant frequency of the crystal, thereby affecting the delay accuracy of the electronic detonator

In severe cases, the crystal may even be damaged by the explosion shock wave, thereby stopping the clock circuit and causing the detonator to fail

[0006] 2. The crystal used in the crystal oscillator cannot be integrated into the electronic detonator control chip, which increases the size and cost of the electronic detonator

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