Electronic detonator control chip and its connection reliability checking method

Abstract

The invention provides an electronic primer control chip which comprises a charge control circuit, a power supply management circuit, an ignition control circuit, a logic control circuit, a safe discharge circuit and so on. The electronic primer control chip in particular comprises a sensing circuit. The mains input end of the sensing circuit is connected with the power supply management circuit,and the other end is connected with the logic control circuit. The signal input end is connected with the charge control circuit and the safe discharge circuit. The sensing circuit comprises a sensing control circuit, a comparator and a PMOS tube, which can adopt a Schmidt inverter. The invention further provides a method for sensing the connection reliability of the chip. Firstly, the initial state of the chip is sensed; secondly, the charge circuit is sensed; thirdly, the ignition circuit or the safe discharge circuit is sensed; fourthly, an energy storage device is charged; subsequently, the circuits which have not be sensed in the ignition circuit and the safe discharge circuit are sensed; finally, the chip is set back to the initial state. In this way, an electric primer is sensed online; and the use reliability is improved.

Description

technical field [0001] The invention relates to the field of pyrotechnics, in particular to an electronic detonator control chip with a self-detection function and a self-detection method thereof. 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 disclosed in the patent application documents ZL03156912.9 and 200820111269.7 realizes the two-wire non-polar connection of the electronic detonator, the two-way co...

AI Technical Summary

Problems solved by technology

However, since the above-mentioned electronic detonator control chip has no internal BIT (Bulit_In Test, self-inspection) function, the reliability of the chip itself and its external connections cannot be detected. Therefore, in the detonator production process, once the chip is installed in the detonator shell, Components connected to the chip cannot be detected

In the patent ZL200420034635.5, which uses an electronic timing circuit and external separated electronic components to realize the function of an electronic detonator, an electronic switch is used to isolate the ignition device from the detonator leg, and there is also no detection function for the connection reliability of the ignition device.

[0004] In addition, in the segmented delay detonator given in ZL98210324.7, the bridge wire is led out to the detonator foot wire through the current limiting resistor to realize the external detectable function of the detonator after the production is completed, but the technical solution There is a DC path between the ignition head and the detonator pin, which affects the anti-static, anti-radio frequency and other safety features of the detonator

In addition, after the detonator detonation network is laid out, it is also impossible to test the ignition bridge wire

[0005] The common defect that also exists in the patent ZL200420034635.5 and ZL98210324.7 is: the detonator can be detonated by energizing it

The detonation process of this kind of detonator is not controlled, and the social security problem of the detonator cannot be solved.

[0006] In the microelectronic password delayer mentioned in the patent ZL200620094002.2, it is also impossible to test the ignition head of the detonator

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