Apparatus and method for correcting communication frequency of electronic detonator

Patent metadata

Field	Value
Publication number	US-12267191-B2
Application number	US-202318279100-A
Country	US
Kind code	B2
Filing date	Jul 7, 2023
Priority date	Dec 16, 2022
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

Proposed are an apparatus and a method for correcting a communication frequency of an electronic detonator, and the apparatus includes a communication packet reception part configured to receive communication packets generated at a preset frequency transmitted from a main control device, an oscillation frequency determination part configured to determine an oscillation frequency of an oscillator mounted in an MCU of an electronic detonator by referring to received communication packets, and an oscillation frequency correction part configured to analyze the communication packets by correcting a shift of a determined oscillation frequency.

First claim

The invention claimed is:

1. An apparatus for correcting a communication frequency of an electronic detonator, the apparatus comprising:
a communication packet reception part configured to receive communication packets generated at a preset frequency transmitted from a main control device;
an oscillation frequency determination part configured to determine an oscillation frequency of an oscillator mounted in an microcontroller unit (MCU) of the electronic detonator by referring to the received communication packets; and
an oscillation frequency correction part configured to analyze the communication packets by correcting a shift of the determined oscillation frequency.

2. The apparatus of claim 1 , wherein the oscillation frequency determination part counts a bit period and a pulse width of several bits among the received communication packets as a pulse of the oscillator.

3. The apparatus of claim 1 , wherein the oscillation frequency determination part measures a duty of a bit before determining the oscillation frequency and presets a specific point within a measured bit period as a determination criterion when the oscillation frequency is determined.

4. The apparatus of claim 3 , wherein when the oscillation frequency is determined, the oscillation frequency determination part measures a duty period of each bit during a period of the reception of the communication packets to determine the bit period, and compares a duty of each bit stored is with the preset determination criterion to determine the bit.

5. A method for correcting a communication frequency of an electronic detonator, the method comprising:
receiving, by a communication packet reception part, communication packets generated at a preset frequency transmitted from a main control device;
determining, by an oscillation frequency determination part, an oscillation frequency of an oscillator mounted in an microcontroller unit (MCU) of the electronic detonator by referring to the received communication packets; and
analyzing, by an oscillation frequency correction part, the communication packets by correcting a shift of the determined oscillation frequency.

6. The method of claim 5 , wherein in the determining of the oscillation frequency of the oscillator mounted in the MCU of the electronic detonator by referring to the received communication packets, a bit period and a pulse width of several bits among the received communication packets are counted as a pulse of the oscillator.

7. The method of claim 5 , wherein in the determining of the oscillation frequency of the oscillator mounted in the MCU of the electronic detonator by referring to the received communication packets, before the oscillation frequency is determined, a duty of a bit is measured, and when the oscillation frequency is determined, a specific point within a measured bit period is preset as a determination criterion.

8. The method of claim 7 , wherein in the determining of the oscillation frequency of the oscillator mounted in the MCU of the electronic detonator by referring to the received communication packets, when the oscillation frequency is determined, a duty period of each bit during a period of the reception of the communication packets is measured to determine the bit period, and then a duty of each bit stored is compared with the preset determination criterion to determine the bit.

Assignees

• Hanwha Corp

Inventors

• Choi Jeong Ho
• Kim Se Ho

Classifications

• H04L2027/0016

  Stabilisation of local oscillators · CPC title

• F42C11/06

  with time delay by electric circuitry · CPC title

• H04L27/0014 Primary

  Carrier regulation (of chaotic carriers H04L27/001; for multicarrier receivers H04L27/2657) · CPC title

• F42B3/10

  Initiators therefor (percussion fuzes F42C7/00; percussion caps F42C19/10; electric primers F42C19/12) · CPC title

• F42D1/045

  Arrangements for electric ignition (dynamo-electric generators H02K) · CPC title