CN1006189B - 环路电阻检测仪 - Google Patents

环路电阻检测仪 Download PDF

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Publication number
CN1006189B
CN1006189B CN87103064.0A CN87103064A CN1006189B CN 1006189 B CN1006189 B CN 1006189B CN 87103064 A CN87103064 A CN 87103064A CN 1006189 B CN1006189 B CN 1006189B
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electric detonator
loop
electric
resistance
detection
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CN87103064.0A
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CN87103064A (zh
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阎鸿久
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Beijing General Research Institute of Mining and Metallurgy
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Beijing General Research Institute of Mining and Metallurgy
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Publication of CN1006189B publication Critical patent/CN1006189B/zh
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Abstract

本发明是一种环路电阻检测仪。该检测仪由交流恒流稳压信号源、运算放大欧姆指示表和同心轴双钳头组成。测量电雷管桥丝电阻时，无需拆开电雷管的短接脚线，可直接进行无触点环路检测，具有灵敏、安全、精确、操作方便等优点。可广泛用于电雷管生产厂、矿山和工程建设电爆破时的电雷管检测。

Description

环路电阻检测仪
本发明是一种环路电阻检测仪。主要用于电雷管生产厂、矿山和建设工程的电爆破时，对脚线端头联结的电雷管桥丝电阻进行安全检测。
目前国内外对电雷管桥丝电阻的测量都是采用欧姆表或爆破用电桥进行接线通电测量的，这种检测方法需拆开电雷管环状脚线方可接线通电测量，检测电流可高达30-50毫安，安全性差，有时引起雷管早爆，接线操作复杂。
为了不拆开短接的电雷管环脚线和不通电进行安全简便的检测电雷管桥丝电阻，特提出本发明的环路电阻检测仪。
图1为环路电阻检测仪方框示意图
图2为环路电阻检测仪双钳头结构图
本发明的环路电阻检测仪如图1所示，是由运算放大欧姆指示表[1]、交流信号源[2]和双钳头[3]三部分组成。其中欧姆指示表[1]为单电源集成块电路结构，交流信号源[2]为交流恒流稳压电源，双钳头为同心轴，均匀绕线的结构。
发明的特征在于采用交流恒流稳压信号源[2]、运算放大欧姆指示表[1]、交流信号源[2]和同心轴双钳头[3]电路结构组成的环路电阻检测仪。
双钳头结构如图2所示，是由固定铁芯[9]、可同步移动铁芯[5]、可动铁芯同步联接柄[6]、信号绕组[10]和检测绕组[11]所组成。
本发明的环路电阻检测仪是根据电磁感应原理制成的。检测的过程如图2所示，先把被检测的环路线[7]放入双钳口中，由检测仪信号源输出的i，信号传到绕组[10]，此时以电雷管[8]的脚线的裸露部分[4]短接后形成的电雷管环路线[7]相应产生一个不大于50毫安的电流i2，使检测绕组[11]感应产出检测电流i3，再经集成块放大，最后由欧姆表指出环路的电阻值。
本发明的检测仪具有使用方便、灵敏度高、测量环路电阻值精确，安全可靠，测量电雷管的电阻时雷管环路中所感生的电流最大不超过50微安，这比用欧姆表检测时电流低1000倍，安全性提高了100万倍，由于测量电雷管电阻时无需把短接的脚线拆开，避免各种杂散电流侵入而造成电雷管早爆的危害。

Claims (2)

1、一种环路电阻检测仪包括交流恒流稳压信号源，欧姆指示表，其特征在于把同心轴双钳头电路接入电阻检测仪环路中。
2、根据权利要求1所述的同心轴双钳头〔3〕其特征在于它是由固定铁芯〔9〕，可同步移动铁芯〔5〕、可动铁芯同步联结柄〔6〕、信号绕阻〔10〕和检测绕阻〔11〕相互连接构成。
CN87103064.0A 1987-04-28 1987-04-28 环路电阻检测仪 Expired CN1006189B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN87103064.0A CN1006189B (zh) 1987-04-28 1987-04-28 环路电阻检测仪

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN87103064.0A CN1006189B (zh) 1987-04-28 1987-04-28 环路电阻检测仪

Publications (2)

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CN87103064A CN87103064A (zh) 1988-11-09
CN1006189B true CN1006189B (zh) 1989-12-20

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CN87103064.0A Expired CN1006189B (zh) 1987-04-28 1987-04-28 环路电阻检测仪

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108445290B (zh) * 2018-03-14 2021-01-15 北京无线电计量测试研究所 一种闭环电阻器阻值测量方法
CN111207634B (zh) * 2020-03-18 2022-09-27 融硅思创(北京)科技有限公司 具有电阻检测功能的数码电子雷管芯片及电阻检测方法

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