Method of communication at a blast stie, and corresponding blasting apparatus
a communication method and blast stie technology, applied in the field of blasting, can solve the problems of time-consuming two-way communication between a blasting machine and a detonator assembly, and reduce the possibility of the safety and security of the blast site, and achieve the effect of efficient communication
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example 1
Preferred Blasting Apparatus Involving Differentiation of Acknowledge Signals Based Upon their Time of Transmission or Receipt
[0089]Turning now to FIG. 1, there is illustrated a blasting apparatus shown generally at 10. The apparatus comprises at least one blasting machine 11 (only one is shown for simplicity). At least one blasting machine 11 is capable of transmitting an “all-acknowledge” command signal 20 via wired or wireless communication.
[0090]The apparatus further comprises detonator assemblies 12a, 12b, 12c for receiving the all-acknowledge command signal 20 from blasting machine 11. Each detonator assembly comprises a detonator 13a, 13b, 13c, including a base charge 14a, 14b, 14c. Each detonator assembly further comprises a memory 15a, 15b, 15c for storing an anti-collision response time. In this example, no two acknowledge signals transmitted by different detonator assemblies of the blasting apparatus are identical. Each detonator assembly still further comprises a clock 1...
example 2
Comparison of Detonator Assembly Roll-Calls for Serial Communications of the Prior Art, and Various Embodiments of Communications of the Present Invention
[0092]FIG. 2 provides a schematic, graphical comparison of a detonator assembly roll-call based upon serial communication (FIG. 2a: prior art), and various embodiments of the present invention (FIGS. 2b, 2c, 2d). Each graph provides a detonator assembly number (y-axis) plotted against elapsed time (x-axis), with transmission by a blasting machine of role call signals (FIG. 2a) or an “all-acknowledge” signal (FIGS. 2b and 2c) indicated by vertical bars, and the black dots on each graph indicating receipt by a receiver of an acknowledge signal from each detonator assembly. In FIG. 2a (prior art) serial communication involves separate interrogation of each detonator assembly by the blasting machine (each roll-call signal being indicated by a vertical bar 30), such that the receiver waits for a response signal 31 from each detonator as...
example 3
Example Means for Programming Detonator Assemblies with Anti-Collision Response Times
[0096]In further preferred embodiments, consideration may be given to set-up of the blasting apparatuses of the present invention to ensure performance and function as required. Turning now to FIG. 3, there is illustrated a blasting apparatus in which the blasting machine is responsible for generating each anti-collision response time for each detonator assembly, and programming each detonator assembly with its respective anti-collision response time, prior to the roll-call. The blasting machine 11 includes an anti-collision response time generation component 30 for generating anti-collision response times. The blasting machine 11 then transmits anti-collision response times 31 to the detonator assemblies in the blasting array. This embodiment will require that the blasting machine be ‘aware’ or pre-programmed with detonator identification codes, so that the transmitted anti-collision response times...
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