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Digital detonator networking evaluation device and networking test method

A technology of a digital detonator and an evaluation device, which is applied in the field of digital detonators, can solve the problems of greatly different states, large interference of the current signal of the detonator, restricting the production efficiency of the digital detonator, etc., and achieves the effect of improving the accuracy.

Active Publication Date: 2022-07-15
EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large length of the networking bus in practical applications, the wire resistance is large, the wire harnesses are entangled with each other, there is electromagnetic interference, and there are still leakage currents in practical applications, resulting in a large interference of the current signal flowing through the detonator and the state of the test stage. Very big
[0003] Due to the cumbersome loading and unloading of the network test, low test efficiency, and poor accuracy, the network test link still restricts the production efficiency of digital detonators.

Method used

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  • Digital detonator networking evaluation device and networking test method

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Embodiment 1

[0028] An embodiment of the present invention provides a digital detonator networking evaluation device, see figure 2 , including a detonator, N digital detonators and two buses respectively connected to the detonator, such as figure 2 bus one and bus two in .

[0029] Among them, a resistor is connected in series on the first bus, and an inductor is connected in series on the second bus.

[0030] There are N parallel branches between the two buses, and a digital detonator is set on each parallel branch.

[0031] An N+1th parallel branch is also arranged between the two buses, and a capacitor is set on the parallel branch.

[0032] An N+2th parallel branch is also arranged between the two buses, and a constant current source is set on the parallel branch.

[0033] It should be noted that the resistor in this embodiment is an adjustable resistor, and the capacitor in this embodiment is an adjustable capacitor.

Embodiment 2

[0035] The present embodiment provides a method for testing digital detonator networking. Based on the digital detonator networking evaluation device of Embodiment 1, the digital detonator networking test is performed, and the specific implementation process is as follows:

[0036] (1) Obtain the bus line resistance, capacitance, and the leakage current of the lead wire of the digital detonator network evaluation device actually used,

[0037] (2) Adjust the resistance value of the resistance on the bus 1 to make it reach the obtained bus line resistance;

[0038] (3) Adjust the capacitance on the N+1th parallel branch to reach the obtained bus capacitance;

[0039] (4) Adjust the output of the constant current source on the N+2th parallel branch to reach the obtained leakage current;

[0040] (5) Adjust the inductance on the bus 2, and cooperate with the capacitance to simulate the influence of the mutual inductance phenomenon;

[0041] (6) In this case, test the digital de...

Embodiment 3

[0044] This embodiment provides a method for testing digital detonator networking. Based on the digital detonator networking evaluation device in Embodiment 1, it is used to build a digital detonator networking using 500 m of copper core leads as the networking bus at a simulated ambient temperature of 25°C. Evaluate the device and test the digital detonator network. The specific implementation process is as follows:

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Abstract

According to the digital detonator networking evaluation device and the networking test method provided by the invention, the device simulates bus wire resistance through an adjustable resistor, simulates electromagnetic interference caused by wire harness winding through a front inductor and a front capacitor, and adds an adjustable constant current source to simulate phenomena such as leakage current, so that a digital detonator test stage accords with an actual condition as much as possible; therefore, the networking test of the digital detonators is optimized, an actual communication signal distortion phenomenon is simulated, and the accuracy of the networking test of the digital detonators is improved.

Description

technical field [0001] The invention belongs to the technical field of digital detonators, in particular to a digital detonator networking evaluation device and a networking testing method. Background technique [0002] Digital detonator is a new type of detonator. At present, the mainstream networking method of digital detonator is that the detonator forms an independent network with N parallel digital detonators through two buses. The network realizes communication and power supply to the N digital detonators. figure 1 shown. The current digital detonator networking test is based on figure 1 Ideally carry out the test. However, due to the large length of the network bus in the actual application, the wire resistance is large, the wire harnesses are intertwined with each other and there is electromagnetic interference, and there are leakage currents in the actual application, resulting in the final current signal flowing through the detonator. The interference is greatly ...

Claims

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Application Information

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IPC IPC(8): H04L41/0823H04L43/08H04L12/40F42C21/00
CPCH04L41/0823H04L43/08H04L12/40006H04L12/40182F42C21/00Y02P90/02
Inventor 吴逸洲卢灿仇晨光邓闯
Owner EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE