Austin Star Detonator Company

Special Devices, Incorporated

Ensign-Bickford Aerospace & Defense Company

Gimtong Teowee

Larry S Howe

Bryan E Papillon

Alex A Kouznetsov

David T Jennings, Iii

Walter Jacob Harders

Chris Munroe

James D Heckelman

Thomas Allen Hoopes

John David Rathbun

Pavel Krivanek

John A Sudick

Russ E Rukavina

David M Forman

A detonator includes a substrate, a controller mounted to the substrate, and a sensor coupled to the controller to measure a temperature, pressure, acceleration or other environmental parameter of the detonator. The controller is configured to transmit the measured environmental parameter from the detonator to a remote master controller, execute an action in response to a value of the measured environmental parameter, and/or prevent or modify at least one detonator function in response to the value of the measured environmental parameter.

Integrated detonator sensors

Ethernet systems, methods and blasting machines are presented for remote turn on of the blasting machine and reliable fire and arm commands issuance. Systems, methods, blasting machines and wireless bridge units are presented for wireless blasting for safe firing of detonators under control of a remote wireless master controller in which the blasting machine is connected by cabling to the wireless bridge unit and power to a firing circuit of the blasting machine is remotely controlled via the bridge unit. The bridge unit or Ethernet primary controller selectively provides first and second firing messages to the blasting machine contingent upon acknowledgment of safe receipt of the first firing message by the blasting machine, and the blasting machine fires the connected detonators only if the first and second firing messages are correctly received from the bridge unit.

Enhanced safety and reliability for a networked detonator blasting system

Logging apparatus, methods and electronic detonators are presented for logging data, wherein the logger transmits read request messages to preprogrammed electronic detonators without transmitting any delay programming messaging, receives and stores electronic detonator data from a given one of the preprogrammed electronic detonators, and sends a verify command to cause the detonator to update its status flag to prevent the given electronic detonator from responding to subsequent read request messages.

Automatic method and apparatus for logging preprogrammed electronic detonators

Systems, methods, blasting machines and wireless bridge units are presented for wireless blasting for safe firing of detonators under control of a remote wireless master controller in which the blasting machine is connected by cabling to the wireless bridge unit and power to a firing circuit of the blasting machine is remotely controlled via the bridge unit. The bridge unit selectively provides first and second firing messages to the blasting machine contingent upon acknowledgment of safe receipt of the first firing message by the blasting machine, and the blasting machine fires the connected detonators only if the first and second firing messages are correctly received from the bridge unit. A wireless slave blasting machine is disclosed, including a wireless transceiver for communicating with a remote wireless master controller, which fires the connected detonators only if first and second firing messages are wirelessly received from the master controller.

Method and apparatus for wireless blasting

Method and apparatus for wireless blasting with first and second firing messages

Disclosed examples include firing control electronic circuits, such as electronic ignition modules (EIMs), electronic detonators and firing circuits for blasting applications, in which a Zener diode or one or more general purpose diodes is connected between a firing capacitor and charging voltage source in a circuit with a detonator ignition element to block voltage below a certain desired level so that the firing capacitor is not charged to enhance safety in the logger mode.

Electronic detonator, electronic ignition module (EIM) and firing circuit for enhanced blasting safety

Seismic blasting methods and apparatus are presented in which detonator confirmation time break (CTB) is accurately determined by maintaining an applied voltage across detonator leg wires following initiation of a firing command or signal and sensing one or more electrical parameters such as voltage and/or current, and selectively identifying a CTB representing a time at which the monitored electrical parameter indicates a successful detonation.

Method and apparatus for confirmation time break (CTB) determination and shotpoint in-situ recording in seismic electronic detonators

A method of calibrating a coefficient of a pressure sensor for blasting operations, including striking a first piezoelectric sensor of a first unmolded pressure sensing apparatus; determining, with an interface circuit, a first peak voltage of the first piezoelectric sensor during the striking thereof, striking a second piezoelectric sensor of a second molded pressure sensing apparatus; determining with the interface circuit, a second peak voltage of the second piezoelectric sensor during the striking thereof, and calculating a piezoelectric constant of the second piezoelectric from at least the first and second peak voltages.

Calibration of molded piezoelectric longitudinal charge coefficient of a pressure sensor for blasting operation

Logging apparatus, methods and systems are presented for logging data from electronic detonators one at a time, in which a logger is placed into an automatic logging mode and begins transmitting read request messages in repetitive fashion until a response is received from a single connected electronic detonator, whereupon the logger obtains serial ID number and potentially other data such as a delay from the electronic detonator, after which the logger automatically proceeds without further user button presses to again initiate read request messages, by which a user can sequentially connect and disconnect a number of electronic detonators one at a time for quick expeditious logging. Also presented are automatic electronic detonator programming apparatus and processes in which a logger is placed into an automatic programming mode and the user connects electronic detonators one at a time for automatic or semi-automatic programming of delay times from internal memory.

Method and apparatus for logging electronic detonators

A system and method for conducting a firing sequence including a master device and a plurality of electronic pyrotechnic devices, wherein the master device broadcasts, multiple times, a fire command to the plurality of electronic pyrotechnic devices, the electronic pyrotechnic devices commence a pre-fire countdown in response to each fire command received without error, and each electronic pyrotechnic device conducts a pre-fire countdown to expiration and thereupon commences a final fire countdown that concludes with firing.

Electronic blasting system having a pre-fire countdown with multiple fire commands

A method of dynamically- and continuously-variable rate asynchronous data transfer, such as for use in an electronic blasting system, may employ a device that transmits data including synchronization bits and bits conveying other information, and a device that ascertains the rate of transmission of the synchronization bits and receives the bits conveying the other information at the ascertained rate of transmission.

Constant-current, rail-voltage regulated charging electronic detonator

A system, for example an electronic blasting system, in which a detection command is issued by a master device to all slave devices connected to the system, causing all slave devices that have not been identified to the master device to respond.

Growing community of inventors

Westlake Village, CA, United States of America

Gimtong Teowee