CN102508301A - Metal detector - Google Patents
Metal detector Download PDFInfo
- Publication number
- CN102508301A CN102508301A CN2011103088881A CN201110308888A CN102508301A CN 102508301 A CN102508301 A CN 102508301A CN 2011103088881 A CN2011103088881 A CN 2011103088881A CN 201110308888 A CN201110308888 A CN 201110308888A CN 102508301 A CN102508301 A CN 102508301A
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- Prior art keywords
- signal generator
- alarm
- receiving processor
- metal detector
- wireless transmit
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Abstract
The invention provides a metal detector which comprises a receiving processor and a detecting sensor connected with the receiving processor, and also comprises an AC (alternating-current) signal generator and two conductor emitters connected with the AC signal generator. The metal detector is characterized in that the receiving processor is composed of an amplifier filter, a phase difference comparator connected with the amplifier filter and an alarm connected with the phase difference comparator, the amplifier filter of the receiving processor contacts with the detecting sensor, the phase difference comparator and a wireless transmitter-receiver; and the AC signal generator contacts with a wireless transmitting-receiving alarm. The metal detector provided by the invention can detect the deeper underground metals, and since the AC signal generator can be a high-power signal generator, the conductor emitter can be buried deeply; the metal detector is safe and can realize unmanned operation; since the principle that the metal reflected AC signal can be distorted and is subjected to phase difference comparison with an AC signal sent from an original AC signal generator is used, the alarm is accurate.
Description
Technical field
The present invention is a kind of electronic device, particularly a kind of metal detector.
Technical background
Metal detection all has plurality of applications in life, commercial production, mine locating and military affairs, as surveys underground metal object, locate (detect) amine, or the like.Metal detector commonly used all is to adopt metal detector to utilize the principle of electromagnetic induction, utilizes the coil that has alternating current to pass through, and produces vertiginous magnetic field.This magnetic field energy vortex flow of inducting in metal object inside.Vortex flow can produce magnetic field again, turns the original magnetic field of influence around, causes detector and sends song.The shortcoming of this technology is easy wrong report, promptly possibly not be metal object it also report to the police, the underground degree of depth of its detection is limited, generally has only about 10 meters.
Summary of the invention
The purpose of this invention is to provide a kind of metal detector, it surveys accurately, reports to the police reliable, can survey deep underground metal object, and can realize unattended.
A kind of metal detector of the present invention comprises receiving processor, the acquisition sensor that is connected with receiving processor, also comprises AC signal generator, two conductor emitters that are connected with AC signal generator, it is characterized in that:
Said receiving processor is by amplifier filter, constitute with the alarm that is connected with the phase differential comparer with the phase differential comparer of amplifier filter, and its amplifier filter and acquisition sensor, phase differential comparer and wireless transmit receiver are got in touch;
Said AC signal generator and wireless transmit receive alarm and get in touch.
Further, said acquisition sensor is a circular insulating board, which is provided with bent metal wire, to increase the sensitivity that receives AC signal.
The present invention is work like this; Two conductor emitters are imbedded need survey underground; Open the switch of AC signal generator, then at underground existing AC signal, wireless transmit receives alarm and receives that also AC signal generator sends AC signal and launches it simultaneously.Survey with acquisition sensor; Detectable signal gets into receiving processor; The wireless transmit reception alarm that the wireless transmit receiver receives sends AC signal and also enters into receiving processor, and receiving processor carries out the phase differential comparative analysis, when detecting metal object with acquisition sensor; Receiving processor sends alerting signal; Alerting signal passes to wireless transmit through the wireless transmit receiver and receives alarm simultaneously, and the alerting signal that the wireless transmit receiver sends is received alarm by wireless transmit and receives, and wireless transmit receives alarm and sends sound and light alarm.
The present invention has following advantage: can survey deep underground metal object, because AC signal generator can be powerful signal generator, it is deep that the conductor emitter can bury.Safety can realize unattended; Because what adopt is that metal object reflection AC signal deformation can take place carries out phase differential principle (the metal surface reflection has the phase differential about half wavelength) relatively with the AC signal that original AC signal generator sends, and reports to the police accurately.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural drawing of acquisition sensor;
Fig. 3 is the structural drawing of receiving processor.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Referring to Fig. 1, Fig. 2 and a kind of metal detector shown in Figure 3, the acquisition sensor 4 that comprise receiving processor 5, is connected with receiving processor also comprises AC signal generator 1, two conductor emitters 2 that are connected with AC signal generator; Said receiving processor 5 is by amplifier filter 7, constitute with the alarm 9 that is connected with the phase differential comparer with the phase differential comparer 8 of amplifier filter, and its amplifier filter 7 is got in touch with wireless transmit receiver 6 with acquisition sensor 4, phase differential comparer 8; Said AC signal generator 1 receives alarm 3 with wireless transmit and gets in touch.
Referring to Fig. 2, said acquisition sensor 4 is a circular insulating board, which is provided with bent metal wire, to increase the sensitivity that receives AC signal.
Because AC signal generator 1, conductor emitter 2 receives alarm 3 and acquisition sensor 4 with wireless transmit, and receiving processor 5 and wireless transmit transmitter 6 so just can have been realized long-distance alarm in larger distance.Acquisition sensor 4, receiving processor 5 and wireless transmit transmitter 6 can personnel operation, also can be installed in unpiloted dolly and carry out.
The present invention is work like this; Two conductor emitters 2 are imbedded need survey underground; Open the switch of AC signal generator 1, then at underground existing AC signal, wireless transmit receives alarm 3 and receives that AC signal generator 1 sends AC signal and launches it simultaneously.Survey with acquisition sensor 4; Detectable signal gets into receiving processor 5; The wireless transmit reception alarm 3 that wireless transmit receiver 6 receives sends AC signal and also enters into receiving processor 5, and receiving processor 5 carries out the phase differential comparative analysis, when detecting metal object with acquisition sensor 4; Receiving processor 5 sends alerting signal; Alerting signal passes to wireless transmit receiver 6 simultaneously, and the alerting signal that wireless transmit receiver 6 sends is received alarm 3 by wireless transmit and receives, and it is alert that wireless transmit reception alarm 3 sends the newspaper sound and light alarm.
Receiving processor 5 is formed by 7,8,9.The ac signal amplifiers wave filter 7 that acquisition sensor 4 receives; The AC signal generator 1 that wireless transmit receiver 6 is received receives the signal that alarm 3 sends through wireless transmit; These two signals get into phase differential comparer 8, if metal object is arranged, then these two signals just produce phase differential; Phase differential comparer 8 just has output, and alarm 9 just sends warning.Simultaneously, phase differential comparer 8 export to wireless transmit receiver 6, the signal that wireless transmit receiver 6 sends receives alarm 3 by wireless transmit and receives, wireless transmit receives alarm 3 and sends the newspaper sound and light alarm.
Claims (1)
1. metal detector, the acquisition sensor (4) that comprise receiving processor (5), is connected with receiving processor also comprises AC signal generator (1), two the conductor emitters (2) that are connected with AC signal generator, it is characterized in that:
Said receiving processor (5) is by amplifier filter (7), constitute its amplifier filter (7) and acquisition sensor (4), phase differential comparer (8) and wireless transmit receiver (6) contact with the phase differential comparer (8) of amplifier filter and the alarm (9) that is connected with the phase differential comparer; Said AC signal generator (1) receives alarm (3) contact with wireless transmit;
Described a kind of metal detector is characterized in that: said acquisition sensor (4) is a circular insulating board, which is provided with bent metal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110308888 CN102508301B (en) | 2011-10-13 | 2011-10-13 | Metal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110308888 CN102508301B (en) | 2011-10-13 | 2011-10-13 | Metal detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102508301A true CN102508301A (en) | 2012-06-20 |
| CN102508301B CN102508301B (en) | 2013-08-07 |
Family
ID=46220406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110308888 Expired - Fee Related CN102508301B (en) | 2011-10-13 | 2011-10-13 | Metal detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102508301B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280788A (en) * | 2014-10-20 | 2015-01-14 | 中山市安领星电子科技有限公司 | Metal ore detector |
| CN105353414A (en) * | 2015-10-22 | 2016-02-24 | 中国科学技术大学 | Pipeline detection method and system |
| CN105866858A (en) * | 2016-03-25 | 2016-08-17 | 东莞市华盾电子科技有限公司 | Calibrating method, testing method for mobile phone detecting and system thereof |
| CN110121654A (en) * | 2016-11-15 | 2019-08-13 | 雷迪公司 | Detecting defects |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08334570A (en) * | 1995-06-09 | 1996-12-17 | Shimadzu Corp | Metal detector |
| WO1998030921A2 (en) * | 1997-01-06 | 1998-07-16 | Jentek Sensors, Inc. | Magnetometer and dielectrometer detection of subsurface objects |
| JP2006064420A (en) * | 2004-08-25 | 2006-03-09 | Mitsui Eng & Shipbuild Co Ltd | Underground installation mapping system |
| RU2366982C2 (en) * | 2006-11-20 | 2009-09-10 | Институт нефтегазовой геологии и геофизики им.А.А.Трофимука СО РАН (ИНГГ СО РАН) | Metal detector |
-
2011
- 2011-10-13 CN CN 201110308888 patent/CN102508301B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08334570A (en) * | 1995-06-09 | 1996-12-17 | Shimadzu Corp | Metal detector |
| WO1998030921A2 (en) * | 1997-01-06 | 1998-07-16 | Jentek Sensors, Inc. | Magnetometer and dielectrometer detection of subsurface objects |
| JP2006064420A (en) * | 2004-08-25 | 2006-03-09 | Mitsui Eng & Shipbuild Co Ltd | Underground installation mapping system |
| RU2366982C2 (en) * | 2006-11-20 | 2009-09-10 | Институт нефтегазовой геологии и геофизики им.А.А.Трофимука СО РАН (ИНГГ СО РАН) | Metal detector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280788A (en) * | 2014-10-20 | 2015-01-14 | 中山市安领星电子科技有限公司 | Metal ore detector |
| CN105353414A (en) * | 2015-10-22 | 2016-02-24 | 中国科学技术大学 | Pipeline detection method and system |
| CN105866858A (en) * | 2016-03-25 | 2016-08-17 | 东莞市华盾电子科技有限公司 | Calibrating method, testing method for mobile phone detecting and system thereof |
| CN110121654A (en) * | 2016-11-15 | 2019-08-13 | 雷迪公司 | Detecting defects |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102508301B (en) | 2013-08-07 |
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Granted publication date: 20130807 Termination date: 20171013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |