CN207946538U - A kind of metal detector - Google Patents
A kind of metal detector Download PDFInfo
- Publication number
- CN207946538U CN207946538U CN201820510772.3U CN201820510772U CN207946538U CN 207946538 U CN207946538 U CN 207946538U CN 201820510772 U CN201820510772 U CN 201820510772U CN 207946538 U CN207946538 U CN 207946538U
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- circuit module
- module
- conducting wire
- chip microprocessor
- analog
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Abstract
The utility model discloses a kind of metal detectors, including signal generating circuit module and control circuit module, the signal generating circuit module is made of search coil and sine wave generation circuit module, the search coil is connected by conducting wire with sine wave generation circuit module, the control circuit module includes linear hall element, amplification circuit module, detecting circuit module, power supply, single-chip microprocessor MCU, analog to digital conversion circuit module, display module and buzzer, the side of the linear hall element is connect by conducting wire with amplification circuit module, the other end of the detecting circuit module is connect by conducting wire with analog to digital conversion circuit module.The utility model is by being provided with signal generating circuit module, control circuit module, linear hall element, single-chip microprocessor MCU and display module, solve what current metal detector was detected and controlled using analog circuit, detection accuracy is low, operating difficulties, and whole system easily by external interference the problems such as.
Description
Technical field
The utility model is related to electronic instrument technology field, specially a kind of metal detector.
Background technology
Metal detecting device is a kind of electronic instrument for being specifically used to detection metal, has metal shell in addition to can be used for detecting
Or outside the object of metal parts, the water pipe or cable that it may further be used to detect hidden electric wire in wall, is embedded in underground, even
The metal object for being imbedded in underground can be detected.Since metal detecting device detects metal using the electromagnetic induction of oscillator coil
Object can detect electric wire or reinforcing bar within the walls such as in decorating house with it, to avoid causing construction risk and safety hidden
Suffer from；In addition, the metal detector of safety check can also make according to Technical Design described in the utility model.Although foreign countries are
There are more perfect series of products, but price and its costliness；Domestic traditional metal detector is carried out using analog circuit
It detects and controls, circuit is complicated, and detection accuracy is low, operating difficulties, and whole system is easily by external interference.Thus may be used
See, metal detector plays an important role to industrial production and personal safety.And in order to accurately judge that metal is hidden
The position hidden, it is necessary to which metal detector has higher sensitivity.
Invention content
In view of the deficiencies of the prior art, the utility model provides a kind of metal detector, solves current metal detection
What device was detected and controlled using analog circuit, circuit is complicated, and detection accuracy is low, operating difficulties, and whole system is easy
The problems such as by external interference.
To achieve the above object, the utility model provides the following technical solutions：A kind of metal detector, including signal generate
Circuit module and control circuit module, the signal generating circuit module are by search coil and sine wave generation circuit module institute
Composition, the search coil are connected by conducting wire with sine wave generation circuit module, and the control circuit module includes linear
Hall element, amplification circuit module, detecting circuit module, power supply, single-chip microprocessor MCU, analog to digital conversion circuit module, display module and
The side of buzzer, the linear hall element is connected by conducting wire with amplification circuit module, and amplification circuit module is another
One end is connect with detecting circuit module, and the other end of the detecting circuit module is connected by conducting wire with analog to digital conversion circuit module
It connects, and analog to digital conversion circuit module and power supply are connected by conducting wire with single-chip microprocessor MCU, the other end of the single-chip microprocessor MCU
It is connected respectively with display module and buzzer by conducting wire.
Preferably, the side of the single-chip microprocessor MCU is provided with operation panel, and the model AT89C51 of single-chip microprocessor MCU.
Preferably, the display module is internally provided with a liquid crystal display.
Preferably, the sine wave generation circuit module includes operational amplifier LM741, resistance R1, resistance R2, resistance
R3, slide rheostat Rp, capacitance C1, capacitance C2 and common ground end.
Preferably, the detecting circuit module includes operational amplifier A 1, operational amplifier A 2, diode D1, diode
D2, resistance Rf, resistance Rc, capacitance C and common ground end.
The utility model provides a kind of metal detector, has following advantageous effect：
（1）The utility model by be provided with search coil, sine wave generation circuit module, signal generating circuit module,
Detecting circuit module and control circuit module, search coil are believed for being powered to generating electromagnetic field in space and receive magnetic field intensity
Number, Hall element is that magnetic field intensity signal for receiving coil is converted to electric signal, and amplification circuit module is for will suddenly
The electric signal amplification of your element conversion, detecting circuit module is for detecting that the peak value of amplified waveform voltage signal is big
Small, analog to digital conversion circuit module is for the signal after detection to be converted into digital signal by analog signal, and single-chip microprocessor MCU is to use
It is transmitted through the frequency signal come in analytical judgment front functional circuit and it is analyzed and determined it is finally decided whether sending out detection
To the alarm of metal, power supply is for being powered to the equipment；
（2）The utility model by being provided with linear hall element, amplification circuit module, single-chip microprocessor MCU and buzzer,
In the course of work, it can be shown if not detecting metal, on display and not find metal, after detecting metal, display meeting
Display has found metal, and the radar map of display can show the specific orientation for the metal being currently found automatically at this time, together
When buzzer can alarm, for reminding user to there is metal to be found, the utility model can also realize detection it is hidden in wall
The function of interior electric wire, the water pipe or cable and the metal object for being imbedded in underground that are embedded in underground.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the connection line structural schematic diagram of the utility model；
Fig. 3 is the circuit structure diagram of the sine wave generation circuit module of the utility model；
Fig. 4 is the circuit structure diagram of the detecting circuit module of the utility model；
Fig. 5 is the program chart of the MCU microcontrollers of the utility model.
In figure：1 search coil, 2 sine wave generation circuit modules, 3 signal generating circuit modules, 4 detecting circuit modules, 5
Analog to digital conversion circuit module, 6 control circuit modules, 7 linear hall elements, 8 amplification circuit modules, 9 power supplys, 10 single-chip microprocessor MCUs,
11 display modules, 12 buzzers.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figs. 1-5, the utility model provides a kind of technical solution：A kind of metal detector, including signal generate electricity
Road module 3 and control circuit module 6, signal generating circuit module 3 are by 2 institute of search coil 1 and sine wave generation circuit module
Composition, search coil 1 are connected by conducting wire with sine wave generation circuit module 2, and control circuit module 6 includes linear Hall member
Part 7, amplification circuit module 8, detecting circuit module 4, power supply 9, single-chip microprocessor MCU 10, analog to digital conversion circuit module 5, display module
11 and buzzer 12, the side of linear hall element 7 is connected by conducting wire with amplification circuit module 8, and amplification circuit module 8
The other end connect with detecting circuit module 4, the other end of detecting circuit module 4 passes through conducting wire and analog to digital conversion circuit module 5
It is connected, and analog to digital conversion circuit module 5 and power supply 9 are connected by conducting wire with single-chip microprocessor MCU 10, single-chip microprocessor MCU 10
The other end is connected with display module 11 and buzzer 12 respectively by conducting wire, and the side of single-chip microprocessor MCU 10 is provided with operating surface
Plate, and the model AT89C51 of single-chip microprocessor MCU 10, display module 11 are internally provided with a liquid crystal display, and sine wave generates
Circuit module 2 includes operational amplifier LM741, resistance R1, resistance R2, resistance R3, slide rheostat Rp, capacitance C1, capacitance C2
With common ground end, detecting circuit module 4 includes operational amplifier A 1, operational amplifier A 2, diode D1, diode D2, electricity
Hinder Rf, resistance Rc, capacitance C and common ground end.
In use, the sine wave generation circuit module 2 is for generating preset electromagnetic wave signal by buffering and amplifying it
Afterwards, the sine wave signal that frequency stability is high, power is larger is formed to be input in search coil 1, it will around the coil of energization
Generate the magnetic field converted rapidly.At this point, being fixed on the linear hall element 7 at 1 center of search coil will sense around coil
Magnetic field, and magnetic field intensity signal is linearly transformed into voltage signal, the voltage signal is then transmitted to the amplification electricity
Road module 8.Voltage signal is transmitted to the detecting circuit module 4, analog to digital conversion circuit successively after amplifying via operational amplifier
In module 5, which is converted to digital signal by the sine wave signal received and is transmitted to microcontroller
In MCU10.The main function of single-chip microprocessor MCU 10 be for analyze and determine front functional circuit be transmitted through come frequency signal to it into
Row analyzes and determines it is finally decided whether sending out the alarm for detecting metal.Display in control circuit module 6 can be shown
It is transmitted to the phase change value of the sine wave signal of the MCU microcontrollers 10 and amplitude changing value and whether detects metal, it should
Radar map is used to show the orientation of metal there are one on display, and the operation panel on the display is for being arranged metal spy
The working condition of instrument is surveyed, the open and close of control metal detector is included, and carries out the parameter setting of some detections.This metal
Detector during the work time, can show if not detecting metal, on display and not find metal, after detecting metal,
Display, which can be shown, has found metal, and the radar map of display can indicate the specific of the metal being currently found automatically at this time
Orientation, while buzzer 12 can alarm, for reminding user to there is metal to be found.
It can to sum up obtain, the utility model is by being provided with signal generating circuit module 3, control circuit module 6, linear Hall
Element 7, single-chip microprocessor MCU 10 and display module 11 solve current metal detector and are detected and control using analog circuit
, circuit is complicated, and detection accuracy is low, operating difficulties, and whole system easily by external interference the problems such as.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of metal detector, including signal generating circuit module（3）And control circuit module（6）, it is characterised in that：It is described
Signal generating circuit module（3）It is by search coil（1）With sine wave generation circuit module（2）It is formed, the search coil
（1）Pass through conducting wire and sine wave generation circuit module（2）It is connected, the control circuit module（6）Including linear hall element
（7）, amplification circuit module（8）, detecting circuit module（4）, power supply（9）, single-chip microprocessor MCU（10）, analog to digital conversion circuit module
（5）, display module（11）And buzzer（12）, the linear hall element（7）Side pass through conducting wire and amplification circuit module
（8）It is connected, and amplification circuit module（8）The other end and detecting circuit module（4）Connection, the detecting circuit module（4）
The other end pass through conducting wire and analog to digital conversion circuit module（5）It is connected, and analog to digital conversion circuit module（5）And power supply（9）
Pass through conducting wire and single-chip microprocessor MCU（10）It is connected, the single-chip microprocessor MCU（10）The other end by conducting wire respectively with display module
（11）And buzzer（12）It is connected.
2. a kind of metal detector according to claim 1, it is characterised in that：The single-chip microprocessor MCU（10）Side set
It is equipped with operation panel, and single-chip microprocessor MCU（10）Model AT89C51.
3. a kind of metal detector according to claim 1, it is characterised in that：The display module（11）It is internally provided with
One liquid crystal display.
4. a kind of metal detector according to claim 1, it is characterised in that：The sine wave generation circuit module（2）
Including operational amplifier LM741, resistance R1, resistance R2, resistance R3, slide rheostat Rp, capacitance C1, capacitance C2 and common ground
End.
5. a kind of metal detector according to claim 1, it is characterised in that：The detecting circuit module（4）Including fortune
Calculate amplifier A1, operational amplifier A 2, diode D1, diode D2, resistance Rf, resistance Rc, capacitance C and common ground end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820510772.3U CN207946538U (en) | 2018-04-11 | 2018-04-11 | A kind of metal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820510772.3U CN207946538U (en) | 2018-04-11 | 2018-04-11 | A kind of metal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207946538U true CN207946538U (en) | 2018-10-09 |
Family
ID=63697552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820510772.3U Expired - Fee Related CN207946538U (en) | 2018-04-11 | 2018-04-11 | A kind of metal detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207946538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110000410A (en) * | 2019-03-27 | 2019-07-12 | 浙江华格供应链服务有限公司永康分公司 | A kind of electric hand drill of detectable wire position |
| CN112462435A (en) * | 2020-12-15 | 2021-03-09 | 晟途工业(大连)有限公司 | Method and device for detecting metal foreign matters in tire |
-
2018
- 2018-04-11 CN CN201820510772.3U patent/CN207946538U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110000410A (en) * | 2019-03-27 | 2019-07-12 | 浙江华格供应链服务有限公司永康分公司 | A kind of electric hand drill of detectable wire position |
| CN112462435A (en) * | 2020-12-15 | 2021-03-09 | 晟途工业(大连)有限公司 | Method and device for detecting metal foreign matters in tire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181009 Termination date: 20190411 |