Detonator resistor testing device with overcurrent protection

A technology for overcurrent protection and resistance testing, applied in overload protection devices and other directions, can solve problems such as unstable safety and hidden dangers, achieve safety assurance, reliability assurance, and achieve the effect of accurate testing

Pending Publication Date: 2018-11-23
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The above two detonator resistance test devices do not perform current limiting protection on the detonator power-on test process, and the detonation current of some detonators is only 0.5A (such as thermal bridge wire detonators), which brings many unstable safety hazards to the test. Therefore, it is necessary to design a detonator resistance test device, which can not only ensure the accuracy of the resistance test, but also ensure the safety and reliability of the live test of the detonator.

Method used

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Embodiment Construction

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0022] figure 1 Structural block diagram of the detonator resistance testing device provided for the embodiment of the present invention, as figure 1 As shown, the test device includes a constant current source module and an impedance test module. The output ports 1 and 2 of the constant current source module and the input ports 3 and 4 of the impedance test module are respectively connected to the resistance of the detonator to be tested through dedicated wires. The circuit formed by the constant c...

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Abstract

The invention discloses a detonator resistor testing device with overcurrent protection; the testing device comprises a constant flow source module and an impedance testing module; a loop formed by ato-be-tested detonator resistor and the constant flow source module and a loop formed by the to-be-tested detonator resistor and the impedance testing module are mutually isolated; the impedance testing module comprises an amplification module and a resistor measuring module. A milliampere level precision constant flow source is selected to power up the to-be-tested detonator resistor; the constant flow source module has an overload protector so as to effectively prevent detonator blast problems caused by overlarge current flow when short circuit happens, and thus ensuring the detonator live-line testing safety; the amplification module is designed so as to precisely test the detonator miniature resistors, thus ensuring the detonator resistor testing reliability.

Description

technical field [0001] The invention relates to the technical field of pyrotechnics electronics, in particular to a detonator resistance testing device with overcurrent protection. Background technique [0002] In today's society, detonators are widely used in many industries. For example, detonators commonly used in engineering blasting include fire detonators, electric detonators and non-electric detonators, etc., and electric detonators include instantaneous detonators, second-delay electric detonators, and millisecond-delay electric detonators. There are more types of detonators in weapon systems, such as thermal bridge wire detonators, spark-type electric detonators, explosive wire detonators, and shock plate detonators. [0003] Commonly used industrial detonators are glowing bridge wire electric detonators. The principle of detonation is: after the current is passed into the industrial detonator, the bridge wire generates heat energy, the temperature rises, the igniti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/36
CPCG01R1/36
Inventor 赵紫正叶海福沈德璋冯涛赵昕
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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