Nonpolar double-wire communication digital electronic detonator capable of self-delaying and detonation method thereof

Abstract

A nonpolar double-wire communication digital electronic detonator capable of self-delaying, comprises a leg wire and a pipe body, wherein the pipe body comprises a pipe casing, and an ignition device, a detonator charging and tail plugging device, a control circuit and an ignition energy storage device, which are installed in the pipe casing. The control circuit comprises a power supply module, a communication module, a core control module and an ignition loop module, which are orderly electrically connected; input terminals A and B of the power supply module are connected to the leg wire, the ignition loop module is electrically connected with the ignition device and the ignition energy storage device; and a detonation method comprises: (1) detonator configuration, (2) networking, and (3) detonation operation. The nonpolar double-wire communication digital electronic detonator has a UID code and detonation authorization code verifying function, has advantages of controllable itself, high authority security, convenient self-delay, on-site laying, accuracy detonation control, good explosion effect, no need to distinguish polarities of the leg wire, convenient usage and low human error rate, and can obtain higher delay precision by using an internal clock module or an external clock module.

Description

technical field [0001] The invention relates to an explosive, in particular to a non-polar two-line communication digital electronic detonator capable of autonomous delay and its detonation method. Background technique [0002] The detonator itself is a dangerous product. If insufficient supervision leads to illegal flow into the society, it will pose a great threat to public safety. Most of the existing electric detonators are managed by marking the casing, and the detonators without marking are not allowed to leave the factory, be sold or used. Such a system regulates the production management of the detonator market, but it cannot prevent the illegal use of detonators. If criminals obtain detonators through illegal channels, they can easily use them for blasting. At this time, there is no restriction on the coding of the shell. force. [0003] Due to the above defects of the old-fashioned electric detonator, the digital electronic detonator and blasting system came into...

AI Technical Summary

Problems solved by technology

Although such a product has low technical difficulty and is easy to implement, the disadvantage is that one adapter is responsible for one segment. If the blasting task requires a lot of segments, a large number of adapters and related auxiliary equipment will be needed, which is not convenient for on-site deployment and use; Moreover, if the layout density is high and multiple adapters are used in a small area, the first explosion point may damage the wires of the second explosion point, so that some explosion points or segments cannot be detonated, affecting the blasting effect and even causing blasting. mission failed

[0006] 2. The detonation authority management mode of the existing electronic detonator cannot prevent the illegal use of the detonator, and the safety and reliability are poor: 1) Some detonators do not do any verification themselves, and all authority control is completed by the adapter. As long as the adapter is verified, it can be detonated Detonator, although the detonator does not need to be verified by calculation, it can greatly simplify the control circuit and reduce the cost, but because the detonator itself is basically uncontrolled, the adapter can use any batch and source of the same type of detonator, which still cannot prevent the illegal use of the detonator

Although the authority security is high and the detonator itself is controlled, the full encryption of the communication information will make the communication complicated. The encrypted command is longer and the sending time is longer. The possibility of interference and error in the communication is relatively high, especially Especially in the case of harsh operating environment and poor line connection quality, if some detonators have transmission errors when key commands (such as detonation commands) are issued, the mission will be seriously affected

[0008] 3. Most digital electronic detonators only use a single working voltage or lack safety protection circuits. During power-on configuration and detection, if the internal circuit of the detonator fails due to external interference or internal failure, it is very easy to cause accidental explosion and cause danger.

[0009] 4. Most of the existing products share an energy storage device for the circuit and the ignition device. The longer the delay time, the more energy the circuit module consumes, and the less energy the ignition device can obtain at the end of the detonation, which affects the reliability of the detonation.

[0010] 5. A considerable number of digital electronic detonators require more than two wires to connect, and even need to distinguish polarity, which is extremely inconvenient in actual use and prone to danger due to wiring errors

Images