CN102944728B - Drilling electric shock alarm system for trenchless drilling machine - Google Patents
Drilling electric shock alarm system for trenchless drilling machine Download PDFInfo
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- CN102944728B CN102944728B CN201210453255.4A CN201210453255A CN102944728B CN 102944728 B CN102944728 B CN 102944728B CN 201210453255 A CN201210453255 A CN 201210453255A CN 102944728 B CN102944728 B CN 102944728B
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Abstract
The invention relates to a drilling electric shock alarm system for a trenchless drilling machine. The drilling electric shock alarm system comprises an electromagnetic induction coil, a signal processing controller and an alarm device. The electromagnetic induction coil adopts a full-closed packaged manner and is arranged at the position of a front transparent cover of a power head of the trenchless drilling machine or at the drill rod protection short circuit position or the position close to a clamp; the electromagnetic induction coil is used for generating an induction electromotive force signal after a drill bit suffers from an electric shock; the signal processing controller is a micro processing system and is used for amplifying an acquired induction signal, transmitting the signal to a comparison circuit, outputting a corresponding digital signal by the comparison circuit and controlling the on-off of an alarm switch; and the alarm device adopts an acousto-optic integrated rotary alarm lamp and is used for producing alarm sound and rotationally flickering to emit light. The drilling electric shock alarm system can be used for detecting the electric shock condition of the drill bit in real time and immediately giving an alarm in the drilling process so as to prompt an operator to adopt measures to avoid an accident; the alarm system has a simple structure, is low in cost, has high response accuracy and a high speed and is convenient to install and debug; the safety of production is improved; and the drilling electric shock alarm system is suitable to use when various trenchless drilling machines drill.
Description
Technical field
The present invention relates to a kind of no-dig technique rig and creep into electric shock warning system, is a kind ofly judge by gathering and comparing induced electromotive force signal the warning system whether no-dig technique borer drill rod gets an electric shock.
Background technology
Along with the high speed development of Chinese national economy and government are to the pay attention to day by day of environment, utilize trenchless technology to carry out pipe laying construction and be more and more subject to people's attention.In horizontal directional drilling construction, the distribution of the original pipeline in accurate grasp underground is the prerequisite of safe construction, but due to the accuracy of current domestic city underground utilities data and complete degree not high, the existing band electric line in underground is destroyed possibly in construction, the as easy as rolling off a log equipment that causes is damaged and personnel's electric shock accidents, for reducing this risk, the ground location such as ground penetrating radar, underground pipeline finder equipment is generally adopted to generally investigate the line distribution of working-yard at present.But have that use occasion is limited always, poor anti jamming capability, there is the problems such as detection blind area.For solving the problem, developing a kind of no-dig technique rig and creeping into electric shock warning system, the security for trenchless engineering construction is necessity very.
Summary of the invention
The object of the invention is to solve when drilling rod (drill bit) touches band electric line in no-dig technique borer drilling procedure and causes the problem that engineering is lost and personnel injure, and provides a kind of no-dig technique rig to creep into electric shock warning system.
In order to realize above-mentioned object, the technical solution used in the present invention is as follows: a kind of no-dig technique rig provided creeps into electric shock warning system, comprise electromagnetic induction coil, signal processing controller and employing acousto-optic integrated and rotate alarm lamp, for sending the warning device of warning sound and rotation blinking light;
Before described electromagnetic induction coil is arranged on no-dig technique drill power head, the drilling rod of transparent cover place or unit head protects short circuit place or nearly clamper place, electromagnetic induction coil has adopted totally enclosed plastic casing to encapsulate, between electromagnetic induction coil two output lines, be connected to 50 ~ 100 Ω resistance;
Described signal processing controller is a little microprocessing systems, is provided with power-switching circuit, amplifying circuit, comparator circuit, control circuit and on-off circuit; Power-switching circuit provides working power for warning system, and described power-switching circuit is made up of LM2596 chip and ICL7660 chip, for the operating voltage of no-dig technique rig 24V being converted to+5V in system needed for each parts and-5V operating voltage; Produce induced electromotive force signal at electromagnetic induction coil when drilling rod gets an electric shock by amplifying circuit to amplify, described voltage signal amplifying circuit adopts AD620 chip; Signal after amplification and reference voltage compare by comparator circuit, export corresponding level, and described comparator circuit adopts LM339 chip, and the reference voltage in comparator circuit is arranged by potentiometer, and reference voltage is set to 0.1 ~ 0.2V; The corresponding level that comparator circuit exports by the single-chip microcomputer of control circuit carries out Logic judgment, the single-chip microcomputer of described control circuit adopts STC89C52 chip, the P1.0 pin of single-chip microcomputer is connected with comparator circuit output terminal, when microprocessor detect has low level to corresponding P1.0 pin, then confirm that electromagnetic induction coil has induction electromotive force to produce, by the Logic judgment of program, in P2.2 pin output low level; The relay of gauge tap circuit keeps adhesive, then warning device continues to report to the police; Otherwise when drilling rod does not get an electric shock, electromagnetic induction coil does not produce signal, single-chip microcomputer is remained open by Logic judgment pilot relay, and warning device is not reported to the police; Described on-off circuit by based on 8550 triodes driving circuit and use the relay of 5V direct current as switch control rule warning device.
Between described electromagnetic induction coil two output lines and the resistance connect is 50 ~ 100 Ω.
Described power-switching circuit is made up of LM2596 chip and ICL7660 chip, for the operating voltage of no-dig technique rig 24V being converted to+5V in system needed for each parts and-5V operating voltage.
Described voltage signal amplifying circuit adopts AD620 chip.The potentiometer that amplifying circuit is 1K by a resistance arranges gain.
Described comparator circuit adopts LM339 chip, and the reference voltage in comparator circuit is arranged by potentiometer, and reference voltage is set to 0.1 ~ 0.2V.
The single-chip microcomputer of described control circuit adopts STC89C52 chip, the P1.0 pin of single-chip microcomputer is connected with comparator circuit output terminal, when microprocessor detect has low level to corresponding P1.0 pin, then confirm that electromagnetic induction coil has induction electromotive force to produce, by the Logic judgment of program, in P2.2 pin output low level.
Described on-off circuit by based on 8550 triodes driving circuit and use 5V DC relay as switch control rule warning device.
In electric shock warning system of the present invention, electromagnetic induction coil is used for creeping into when drilling rod gets an electric shock at no-dig technique rig producing induced electromotive force signal.Electromagnetic induction coil is made up of enamel covered wire, annular core and plastic package shell, enameled wire is along same direction above annular core, and the number of turn of coil is 3 ~ 4 layers, and annular core adopts mild carbon steel, its size is relevant with drill pipe diameter, is convenient to drilling rod through electromagnetic induction coil.
The beneficial effect that a kind of no-dig technique rig of the present invention creeps into electric shock warning system is:
1, electric shock warning system response accuracy of the present invention is high, speed is fast, real-time detection can be realized, report to the police immediately when in the actual drilling process of no-dig technique rig, drill bit gets an electric shock, prompting driller personnel and other operating personnel note Danger Electric shock risk, to take measures to avoid the generation of electric shock accidents.
2, electric shock warning system structure of the present invention is simple, and cost is low, and the Installation and Debugging of equipment are convenient, use this electric shock warning system to improve the security of production, is applicable to all kinds of no-dig technique rig drilling construction and uses.
Accompanying drawing explanation
Fig. 1 is that no-dig technique rig of the present invention creeps into electric shock warning system structured flowchart.
Fig. 2 is the electromagnetic induction coil installation site schematic diagram of warning system of the present invention.
Fig. 3 is power-switching circuit structural drawing in the signal processing controller of warning system of the present invention.
Fig. 4 is-5V power-switching circuit structural drawing in the signal processing controller of warning system of the present invention.
Fig. 5 is voltage signal amplification circuit structure figure in the signal processing controller of warning system of the present invention.
Fig. 6 is comparator circuit structural drawing in the signal processing controller of warning system of the present invention.
Fig. 7 is control circuit structural drawing in the signal processing controller of warning system of the present invention.
Fig. 8 is the signal processing controller breaker in middle circuit structure diagram of warning system of the present invention.
Fig. 9 warning system workflow diagram of the present invention.
In above-mentioned figure: 1-drilling rod; 2-electromagnetic induction coil; 3-unit head; Transparent cover before 4-unit head.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1: the invention provides a kind of no-dig technique rig and creep into electric shock warning system, its structure is as Fig. 1.Comprise electromagnetic induction coil 2, signal processing controller and warning device, described electromagnetic induction coil 2 is arranged on transparent cover 4 place before the unit head of no-dig technique drill power head 3, as Fig. 2.Electromagnetic induction coil 2 has adopted totally enclosed plastic casing to encapsulate, and is connected to a resistance between electromagnetic induction coil 2 two output lines; This example the resistance connect is 100 Ω.Described signal processing controller is a little microprocessing systems, is provided with power-switching circuit, amplifying circuit, comparator circuit, control circuit and on-off circuit, power-switching circuit provides working power for system, produce induced electromotive force signal at electromagnetic induction coil 2 when drilling rod 1 gets an electric shock by amplifying circuit to amplify, signal after amplification and reference voltage compare by comparator circuit, export corresponding level, the comparative result that comparator circuit exports by the single-chip microcomputer of control circuit carries out Logic judgment, the relay of control circuit gauge tap circuit remains open, then warning device continues to report to the police, otherwise, when drilling rod 1 does not get an electric shock, electromagnetic induction coil 2 does not produce signal, single-chip microcomputer keeps adhesive by the relay of Logic judgment gauge tap circuit, warning device is not reported to the police, warning device adopts acousto-optic integrated to rotate alarm lamp, for sending warning sound and rotating blinking light.
The electromagnetic induction coil 2 used in the present invention is made up of enamel covered wire, annular core and plastic package shell, enameled wire adopts model Q (ZY+XY)-2*/220 polyamidoimide electromagnetic wire, along a direction rule above annular core, the number of turn of coil is 3 ~ 4 layers, annular core adopts mild carbon steel as material, and insullac is coated on annular core, its size is relevant with drill pipe diameter, be convenient to drilling rod through electromagnetic induction coil, electromagnetic induction coil is used for producing induced electromotive force signal when no-dig technique rig creeps into electric shock.
In the present invention, signal processing controller is a little microprocessing systems, is made up of power-switching circuit, voltage signal amplifying circuit, comparator circuit, control circuit and on-off circuit.The power-switching circuit of signal processing controller is see Fig. 3,4, be made up of LM2596 chip and ICL7660 chip respectively, for the operating voltage of no-dig technique rig 24V being converted to+5V needed for chip component and-5V operating voltage, also can ensure reliability and the continuation of circuit voltage simultaneously.
The voltage signal amplifying circuit of signal processing controller is as Fig. 5, form primarily of AD620A chip,-5V voltage needed for chip AD620A is provided by-5V voltage conversion circuit, voltage signal amplifying circuit is used for when drilling rod gets an electric shock, the weak voltage signals that electromagnetic induction coil produces is amplified with certain gain, then output to subordinate's comparator circuit, gain is arranged by potentiometer RP1.
Comparator circuit in signal processing controller is as Fig. 6, form primarily of LM339 chip, compare with the reference voltage pre-set for the voltage signal after voltage signal amplifying circuit is amplified, input voltage is connected on "-" end of comparer, reference voltage is connected on "+" end, the potentiometer RP2 that the reference voltage pre-set is 1K by a resistance regulates, and the setting of reference voltage mainly prevents the positive and negative two ends of comparer from occurring the situation of 0 simultaneously, makes comparer occur to judge confusion.Reference voltage is set to 0.2V by the present embodiment, when drilling rod touches band electric line, if the induction electromotive force produced is larger than reference voltage 0.2V after amplifying, the then output terminal output low level of comparer, if contrary drilling rod does not get an electric shock, electromotive force after then amplifying is 0, is less than reference voltage, and comparator circuit correspondence exports high level.
Control circuit in signal processing controller is as Fig. 7, be made up of STC89C52 singlechip chip, the P1.0 pin of single-chip microcomputer is connected with the output terminal of comparator circuit, when the P1.0 pin mouth of single-chip microcomputer detect that the output terminal of comparer exports be low level time, then confirm that electromagnetic induction coil has induction electromotive force to produce, and illustrates that drilling rod gets an electric shock, by the Logic judgment of program, in P2.2 pin output low level, otherwise then export high level.
On-off circuit in signal processing controller is as Fig. 8, form by based on 8550 transistor drive circuits and 5V DC relay, when after aforementioned single-chip microcomputer P2.2 pin output low level, the adhesive that relay is corresponding, contrary then discharge, play the effect of switch on and off, thus control the break-make that acousto-optic integrated rotates alarm lamp.
Described warning circuit adopts finished product acousto-optic integrated to rotate alarm lamp, when getting an electric shock for drilling rod, the single-chip microcomputer output low level of control circuit, relay closes, alarm conducting, produces sound warning and light alarm signal, prompting staff notes, on the contrary, then illustrate that drilling rod does not touch energized conductor, does not report to the police.
Embodiment 2: no-dig technique rig of the present invention creeps into electric shock warning system structure as embodiment 1; short circuit place protected by the drilling rod 1 being arranged on no-dig technique drill power head 3 unlike electromagnetic induction coil 2, between electromagnetic induction coil 2 two output lines and the resistance connect is 50 Ω.No-dig technique rig of the present invention creeps into the electric shock warning system course of work as Fig. 9, when no-dig technique rig is started working, when no-dig technique rig creeps into the electric shock of middle drilling rod, induced electromotive force signal is produced at electromagnetic induction coil 2, induced electromotive force signal passes to the voltage signal amplifying circuit in signal processing controller, the potentiometer that voltage signal amplifying circuit is 1K by a resistance arranges gain, induced electromotive force signal is amplified; Signal after amplification and reference voltage compare by comparison module, the reference voltage that output level and comparison module export compares by the single-chip microcomputer of control circuit, compared result carries out Logic judgment, and the switch of gauge tap circuit remains closed, and warning device continues to report to the police; Otherwise drilling rod does not get an electric shock, and electromagnetic induction coil does not produce signal, the single-chip microcomputer of control circuit is by Logic judgment, and the switch of gauge tap circuit remains open, and warning device is not reported to the police.
This warning system simple structure, cost is low, facilitates Installation and Debugging, and response accuracy is high, speed is fast, improves the security of production, is applicable to using when all kinds of no-dig technique rig creeps into.
Claims (1)
1. no-dig technique rig creeps into an electric shock warning system, comprises electromagnetic induction coil, signal processing controller and employing acousto-optic integrated and rotates the warning device that alarm lamp sends warning sound and rotation blinking light; It is characterized in that:
Before described electromagnetic induction coil is arranged on no-dig technique drill power head, the drilling rod of transparent cover place or unit head protects short circuit place or nearly clamper place, electromagnetic induction coil has adopted totally enclosed plastic casing to encapsulate, between electromagnetic induction coil two output lines, be connected to 50 ~ 100 Ω resistance;
Described signal processing controller is a little microprocessing systems, is provided with power-switching circuit, amplifying circuit, comparator circuit, control circuit and on-off circuit; Power-switching circuit provides working power for warning system, and described power-switching circuit is made up of LM2596 chip and ICL7660 chip, for the operating voltage of no-dig technique rig 24V being converted to+5V in system needed for each parts and-5V operating voltage; Produce induced electromotive force signal at electromagnetic induction coil when drilling rod gets an electric shock by amplifying circuit to amplify, described amplifying circuit adopts AD620 chip; Signal after amplification and reference voltage compare by comparator circuit, export corresponding level, and described comparator circuit adopts LM339 chip, and the reference voltage in comparator circuit is arranged by potentiometer, and reference voltage is set to 0.1 ~ 0.2V; The corresponding level that comparator circuit exports by the single-chip microcomputer of control circuit carries out Logic judgment, the single-chip microcomputer of described control circuit adopts STC89C52 chip, the P1.0 pin of single-chip microcomputer is connected with comparator circuit output terminal, when microprocessor detect has low level to corresponding P1.0 pin, then confirm that electromagnetic induction coil has induction electromotive force to produce, by the Logic judgment of program, in P2.2 pin output low level, the relay of P2.2 pin output low level gauge tap circuit keeps adhesive, then warning device continues to report to the police; Otherwise when drilling rod does not get an electric shock, electromagnetic induction coil does not produce signal, single-chip microcomputer is remained open by Logic judgment pilot relay, and warning device is not reported to the police; Described on-off circuit by based on 8550 triodes driving circuit and use the relay of 5V direct current as switch control rule warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210453255.4A CN102944728B (en) | 2012-11-13 | 2012-11-13 | Drilling electric shock alarm system for trenchless drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210453255.4A CN102944728B (en) | 2012-11-13 | 2012-11-13 | Drilling electric shock alarm system for trenchless drilling machine |
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| CN102944728A CN102944728A (en) | 2013-02-27 |
| CN102944728B true CN102944728B (en) | 2015-06-24 |
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| CN201210453255.4A Expired - Fee Related CN102944728B (en) | 2012-11-13 | 2012-11-13 | Drilling electric shock alarm system for trenchless drilling machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233718B (en) * | 2013-05-20 | 2015-09-30 | 无锡市钻通工程机械有限公司 | The operation behavior testing circuit of large-scale non-excavation pipe-laying drilling rig |
| CN103713328A (en) * | 2013-12-27 | 2014-04-09 | 天津森宇科技发展有限公司 | City underground pipeline construction detection device based on electromagnetic induction technology |
| CN107386972B (en) * | 2017-08-21 | 2023-04-07 | 福建亿钻机械有限公司 | Electric shock-proof horizontal directional drilling machine and horizontal directional drilling method |
| CN108680778A (en) * | 2018-03-22 | 2018-10-19 | 河南科技大学 | A kind of portable waveform is shown and signal generation apparatus |
| CN109057771B (en) * | 2018-09-21 | 2020-09-29 | 中国地质大学（武汉） | Remote monitoring device and method for trenchless drilling machine |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000113349A (en) * | 1998-10-06 | 2000-04-21 | Tanizawa Seisakusho Ltd | High voltage live wire sensor |
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Granted publication date: 20150624 Termination date: 20181113 |