Communication system and detonator

Patent metadata

Field	Value
Publication number	US-11333475-B2
Application number	US-201916627486-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Dec 28, 2018
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A communication system includes a transmitter and a receiver connected through a cable. The transmitter transmits a first signal to the receiver using a voltage applied to the cable. A control circuit of the receiver receives the first signal and transmitting a second signal to the transmitter using a current flowing to the cable. A charging circuit of the receiver performs a charging operation by receiving the voltage through the cable and supplying a driving voltage to the control circuit. The control circuit includes a filter generating a second voltage by extracting a voltage within a reference range from a peak voltage of a first voltage and a voltage meter extracting the first signal by measuring the second voltage.

First claim

The invention claimed is:

1. A communication system comprising a transmitter and a receiver connected through a cable,
wherein the transmitter transmits a first signal to the receiver using a first voltage applied to the cable, and
the receiver includes:
a control circuit receiving the first signal and transmitting a second signal to the transmitter using a current flowing to the cable; and
a charging circuit performing a charging operation by receiving the first voltage through the cable and supplying a driving voltage to the control circuit,
wherein the control circuit includes:
a filter filtering a noise of the first voltage applied to the cable by extracting a second voltage within a reference range from a peak value of the first voltage; and
a voltage meter extracting the first signal by measuring the second voltage.

2. The communication system according to claim 1 , wherein the control circuit includes:
a controller generating a toggle signal to generate the second signal, in response to the first signal; and
a control switch disposed on the cable to control the current flowing to the cable, in response to the toggle signal.

3. The communication system according to claim 1 , wherein the filter includes a transistor connecting a first and a second electrode in response to the first voltage supplied to a gate electrode,
the driving voltage is supplied to the first electrode, and
the second voltage is output to the second electrode.

4. The communication system according to claim 3 , wherein the second voltage has a first voltage value while the first voltage has the peak value, and
the second voltage has a second voltage value, different from the first voltage value, while the first voltage has a base voltage value.

5. The communication system according to claim 4 , wherein the driving voltage has the first voltage value, and
the first voltage value is greater than the second voltage value.

6. The communication system according to claim 5 , wherein a difference between the first voltage value and the second voltage value falls within the reference range.

7. The communication system according to claim 5 , wherein the reference range corresponds to a gate/source voltage of the transistor.

8. The communication system according to claim 1 , wherein the charging circuit includes:
a charger performing the charging operation by receiving the first voltage supplied thereto; and
a charging switch disposed between the charger and the cable to control a supply of the voltage to the charger, in response to a charge stop signal,
wherein the control circuit transmits the charge stop signal to the charging switch while the second signal is transmitted.

9. A detonator comprising:
a control circuit receiving a first signal from a blasting device through a cable, the first signal being generated using a first voltage by the blasting device, and transmitting a second signal to the blasting device using a current flowing to the cable; and
a charging circuit performing a charging operation by receiving the first voltage through the cable and supplying a driving voltage to the control circuit,
wherein the control circuit includes:
a filter filtering a noise of the first voltage applied to the cable by extracting a second voltage within a reference range from a peak value of the first voltage; and
a voltage meter extracting the first signal by measuring the second voltage.

10. The detonator according to claim 9 , wherein the control circuit includes:
a controller generating a toggle signal to generate the second signal in response to the first signal; and
a control switch disposed on the cable to control the current flowing to the cable in response to the toggle signal.

11. The detonator according to claim 9 , wherein the filter includes a transistor connecting a first and a second electrode in response to the first voltage supplied to a gate electrode,
the driving voltage is supplied to the first electrode, and
the second voltage is output to the second electrode.

12. The detonator according to claim 11 , wherein the second voltage has a first voltage value during a period in which the first voltage has the peak value, and
the second voltage has a second voltage value different from the first voltage value during a period in which the first voltage has a base voltage value.

13. The detonator according to claim 12 , wherein the driving voltage has the first voltage value, and
the first voltage value is greater than the second voltage value.

14. The detonator according to claim 13 , wherein a difference between the first voltage value and the second voltage value falls within a gate/source voltage of the transistor.

15. The detonator according to claim 9 , wherein the charging circuit includes:
a charger performing the charging operation by receiving the first voltage supplied thereto; and
a charging switch disposed between the charger and the cable to control a supply of the voltage to the charger, in response to a charge stop signal,
wherein the control circuit transmits the charge stop signal to the charging switch while the second signal is transmitted.

16. The detonator according to claim 9 , further comprising an ignition circuit igniting under control of the control circuit.

17. The detonator according to claim 16 , wherein the control circuit provides a blasting signal and a blasting voltage to the ignition circuit by counting a delay time included in the first signal, and
the ignition circuit applies the blasting voltage to a fuse head in accordance with the blasting signal.

Assignees

• Hanwha Corp

Inventors

• Kim Se Ho
• Choi Jeong Ho

Classifications

• F42D1/045 Primary

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

• F42D1/05 Primary

  Electric circuits for blasting · CPC title

• F42C19/12 Primary

  electric · CPC title

• F42B3/122

  Programmable electronic delay initiators · CPC title

• F42D3/04

  for rock blasting · CPC title