CN106646628A - Metal-detector-based metal detection device and metal detection method thereof - Google Patents
Metal-detector-based metal detection device and metal detection method thereof Download PDFInfo
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- CN106646628A CN106646628A CN201611270053.0A CN201611270053A CN106646628A CN 106646628 A CN106646628 A CN 106646628A CN 201611270053 A CN201611270053 A CN 201611270053A CN 106646628 A CN106646628 A CN 106646628A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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Abstract
The invention relates to a metal detection device and particularly relates to a metal-detector-based metal detection device and a metal detection method thereof. The metal-detector-based metal detection device comprises a metal detector and rejecting equipment, wherein the metal detector is arranged right above or below a to-be-detected object and is vertical to the movement direction of the to-be-detected object; the rejecting equipment is arranged on a guide rail in a direction vertical to the movement direction of the to-be-detected object and is used for rejecting metal existing in the to-be-detected object detected by the metal detector; and the metal detector is driven by a metal detector controller, and the rejecting equipment and the guide rail on which the rejecting equipment is located are driven by a rejecting execution mechanism controller. According to the metal detector-based metal detection device, the specific position of metal impurities in material can be determined, and the metal impurities can be conveniently and accurately rejected, so that the continuous industrial production and automatic rejection of the metal impurities are guaranteed; and furthermore, the metal detection device is simple in structure, convenient to use and suitable for batch production.
Description
Technical field
The present invention relates to a kind of metal detector, more particularly to a kind of metal detector based on metal detector and
Its metal method for detecting.
Background technology
Metal impurities in rubber tyre industry spot needs to detect rubber size, such as will on steel wire calendaring production line
Ask the film on glue supply machine continuously can not interrupt for glue.
The metal detector being usually used, because comprising only a transmitting coil and a receiving coil in its structure, when send out
During existing metal impurities, can only online confirmation contains metal in the range of circuit covering, cannot but determine tool of the metal impurities in film
Body position.This just has to cut the film in whole coil coverage, and needs the film of cut-out to connect afterwards
Come, can ensure continuously to supply glue.
Using traditional metal detector, due to positioning to metal exactly, aritificial cut-off is usually used
Or film is integrally cut off using automatic cutter structure, then by manually cut-out film reconnect get up, it is clear that significantly
The production cost and human cost of enterprise is increased, the efficiency of production has been had a strong impact on.
The content of the invention
The present invention is in order to overcome the above-mentioned deficiencies of the prior art, there is provided a kind of metal detection dress based on metal detector
Put, the present invention determines position of the metal impurities in material by metal detector, and metal detector can accurately reject gold
Category impurity, it is ensured that the automatization that industrial continuous and metal impurities are rejected.
For achieving the above object, following technical measures be present invention employs：
A kind of metal detector based on metal detector includes being arranged at the surface or underface of article to be detected
And the metal detector vertical with the moving direction of article to be detected, and be arranged at vertical with the moving direction of article to be detected
Guide rail on removal equipment, the removal equipment be used for reject through metal detector detection article to be detected exist gold
Category, the metal detector is driven by metal detector controller, leading residing for the removal equipment and removal equipment
Rail is driven by rejecting actuator controller.
Preferably, the metal detector include signal transmission circuit, multiple signals receiving circuit, signal processing circuit with
And warning execution circuit, wherein,
Signal transmission circuit, for receiving the signal that signal processing circuit sends, so as to be formed on metal detector surface
Electromagnetic field, the signal transmission circuit exports the signal input part of transmission signal to signal receiving circuit；
Per signal receiving circuit two-way communication link between signal processing circuit all the way；
Signal processing circuit, for judging that the transmission signal that signal receiving circuit sends whether there is exception, if existing
Abnormal, signal processing circuit exports the signal input part of process signal to warning execution circuit；If there is no exception, by gold
There are no metal impurities in the article to be detected of category survey meter；
Warning execution circuit, for reporting to the police or driving metal detector to reject metal impurities.
Preferably, the signal transmission circuit include transmitting coil, the first resonance modules, power amplifier module, first
Two-stage amplifier module and three rank RC low pass filter blocks, the signal input part of the three ranks RC low pass filter blocks connects
The signal output part of signal processing circuit is connect, the signal output part of three rank RC low pass filter blocks connects the first two-stage amplifier
The signal input part of module, the signal of the signal output part connection power amplifier module of the first two-stage amplifier module is defeated
Enter end, the signal output part of the power amplifier module connects the signal input part of the first resonance modules, first resonance
The signal output part of module connects the signal input part of transmitting coil, the signal output part output transmission signal of the transmitting coil
To the signal input part of signal receiving circuit.
Preferably, the signal receiving circuit include receiving coil, the second resonance modules, the second two-stage amplifier module,
Voltage comparator module and second order RC lowpass filter module, the signal input part of the receiving coil is used to receive next spontaneous
The transmission signal of ray circle, the signal output part of receiving coil connects the signal input part of the second resonance modules, and described second is humorous
The signal output part of module of shaking connects the signal input part of the second two-stage amplifier module, the second two-stage amplifier module
Signal output part connects a signal input part of voltage comparator module, and another signal of the voltage comparator module is defeated
Enter the signal output part of end connection second order RC lowpass filter module, at the signal output part connection signal of voltage comparator module
The signal input part of reason circuit.
Preferably, the signal processing circuit includes the first chip, the second chip, the signal output part of first chip
Connect signal input part, the signal input part of second order RC lowpass filter module of three rank RC low pass filter blocks respectively, the
The signal input part of one chip connects the signal output part of voltage comparator module, double between first chip and the second chip
To communication connection, the signal output part of second chip connects the signal input part of warning execution circuit, the letter of the second chip
Number input connection X-axis limit switch, Y-axis limit switch and Z axis limit switch, the second chip is also between serial ports touch screen
Two-way communication link.
Preferably, the warning execution circuit includes metal alarm relay, big metal alarm relay, the metal report
The signal input part of alert relay, the signal input part of big metal alarm relay connect second by relay drive circuit
The signal output part of chip, the signal that the signal output part of second chip connects respectively X-axis step motor drive module is defeated
Enter end, the signal input part of y-axis stepper motor drive module, the signal input part of Z axis step motor drive module.
Further, first chip, the model of the second chip are Chinese macrocrystalline Science and Technology Ltd. production
STC15F2K60S2 chips；The power amplifier module includes power amplifier, and the chip model of the power amplifier is
TDA2030A；First two-stage amplifier module includes the first two-stage amplifier, and the chip model of first two-stage amplifier is
The TL072CP chips of Texas Instruments companies of U.S. production；The second two-stage amplifier module includes the two or two grade
Amplifier, the chip model of second two-stage amplifier is the TL062 chips of Texas Instruments companies production；Institute
Voltage comparator module is stated including voltage comparator, the model HIT production of the voltage comparator
HA17393 chips.
Further, signal receiving circuit described in multichannel is arranged perpendicular to the moving direction of article to be detected, and per all the way
Spacing distance between signal receiving circuit is equal.
The invention allows for a kind of metal method for detecting of the metal detector based on metal detector, if signal connects
Receive circuit in receiving coil be N roads, with the center of circle of each receiving coil as cut central point be it is N number of cut central point,
And the midpoint between the center of circle of two adjacent receiving coils cuts central point to cut central point and being N-1, in cutting
The sum of heart point is 2N-1, and the point coordinates that cuts as in Y direction is set to 2N-1.
First chip receives the transmission signal from voltage comparator module, and judges that specifically certain is all the way or a few roads are believed
The transmission signal that number receiving circuit sends exists abnormal；Judge that the transmission signal for sending has abnormal signal receiving circuit inspection again
The article to be detected surveyed whether there is big metal, be specifically divided into following 4 kinds of situations：
Situation one：There is exception in the transmission signal that only all the way signal receiving circuit sends, first chip is according to electricity
The pressure transmission signal that sends of comparator module is the pulsewidth of pulse signal to calculate metal length, so as to whether judge metal
It is elongated big metal, if big metal, then the first chip sends big metal alarm signal to the second chip, by the second chip
Big metal alarm signal is delivered to into big metal alarm relay, metal detector emergency shutdown by relay drive circuit；
If not big metal, then the second chip judges that the Y-axis that metal is located cuts central point, while reading the conveying speed of belt feeder
Degree, calculate metal reach removal equipment required for time determine that X-axis cuts a little, respectively by X-axis step motor drive module,
Y-axis stepper motor drive module to X-axis motor, y-axis stepper motor send into signal, and removal equipment is sent to into specified location,
When metal reaches the position of removal equipment, starting Z axis motor carries out cutting operation, and article to be detected is being entered after cutting
Waste material is discharged by waste gate during next process；
Situation two：There is exception, the first chip root in the transmission signal that the adjacent signal receiving circuit of two-way sends
The transmission signal sent according to voltage comparator module is the pulsewidth of pulse signal to calculate metal length, so as to judge metal
Whether it is elongated big metal, if big metal, then the first chip sends big metal alarm signal to the second chip, by second
Big metal alarm signal is delivered to big metal alarm relay by chip by relay drive circuit, and metal detector promptly stops
Machine；If not big metal, then the midpoint between the center of circle of two receiving coils is cut center by the second chip as Y-axis
Point, cuts Y-axis central point and exports to y-axis stepper motor, then will be calculated X-axis and cut and export to X-axis motor, point
Not Tong Guo X-axis step motor drive module, y-axis stepper motor drive module to X-axis motor, y-axis stepper motor send into letter
Number, removal equipment is sent to into specified location, when metal reaches the position of removal equipment, start Z axis motor and cut
Operation, article to be detected waste material when into next process is discharged by waste gate after cutting；
Situation three：There is exception, institute in the transmission signal that more than two-way or two-way non-conterminous signal receiving circuit sends
State the first chip to be processed successively according to situation one；
Situation four：There is exception in the transmission signal that more than three tunnels or three tunnels adjacent signal receiving circuit sends, described
First chip directly judges that the metal is big metal, starts big metal alarm relay, metal detector emergency shutdown.
The beneficial effects of the present invention is：
1), the present invention include be arranged at article to be detected surface or underface and with the moving direction of article to be detected
Vertical metal detector, and the removal equipment being arranged on the moving direction vertical direction guide rail with article to be detected, institute
State removal equipment for reject through metal detector detection the metal that exists of article to be detected, the present invention is by metal detection
Instrument can determine particular location of the metal impurities in material, facilitate removal equipment accurately to reject metal impurities, it is ensured that industry is raw
The automatization that the continuous and metal impurities for producing are rejected, and the simple structure of this metal detector, easy to use, suitable batch
Production.
2), the metal method for detecting that the present invention is provided can not only exactly orient the particular location of metal impurities, lead to
Cross removal equipment and reject metal impurities, and can recognize that big metal, this method is simple to operate, be easily achieved.
3), metal detector is arranged at the surface or underface of article to be detected, and signal transmission circuit is in metal detection
Instrument face formed magnetic field, by signal receiving circuit receive signal change to judge article to be detected in whether there is metal
Impurity, efficiently avoid the appearance of plastic squeeze phenomenon.
4), first chip, the model of the second chip are Chinese macrocrystalline Science and Technology Ltd. production
STC15F2K60S2 chips, the chip model of the power amplifier is TDA2030A；The chip of first two-stage amplifier
The TL072CP chips of Texas Instruments companies of model U.S. production；The chip model of second two-stage amplifier
For the TL062 chips of Texas Instruments companies production；The model HIT production of the voltage comparator
HA17393 chips.The part of above-mentioned multiple specific models is worked in coordination, and realizes the optimal design of the present invention.
Description of the drawings
Fig. 1 is the frame for movement schematic diagram (vertical view) of this metal detector；
Fig. 2 is that metal detector structure and segmentation rotation cut central point schematic diagram (vertical view)；
Fig. 3 is metal detector receiving coil amplification principle block diagram (side-looking)；
Fig. 4 is that metal detector examines circuit theory of constitution block diagram.
Reference implication in figure is as follows：
Workshop section is rejected in 1-sizing material metal detection positioning workshop section, 2-metal impurities rotary-cut
3-subsequent production workshop section, 4-sizing material conveyer belt roller
5-belt roller bearing 6-sizing material conveyer bridge
7-belt conveyor, 8-metal detector, 9-metal detector controller
The resonance modules of 10-signal transmission circuit, 11-transmitting coil 12-the first
The two-stage amplifier module of 13-power amplifier module 14-the first
15-three rank RC low pass filter blocks 16-rejecting actuator controllers
17-rejecting mechanism X-direction guide rail 18-rejecting mechanism Y direction guide rail
19-Pneumatic stamping cut-off knife or electronic rotation cut-off knife 20-multiple signals receiving circuit
The resonance modules of 21-receiving coil 22-the second
23-the second two-stage amplifier module 24-voltage comparator module
25-second order RC lowpass filter module 26-Z axis motor
27-y-axis stepper motor, 28-receiving coil width
30-signal processing circuit of the distance between 29-receiving coil
31-the first the 32-the second chip of chip
33-the three chip 34-metal detector width
35-metal detector X-axis overall dimensions 36-metal detector shell
The metal impurities that 37-hypothesis is present
38-be Y01, Y02, Y03, Y04, Y05 group search coil produce electromagnetic field
40-warning execution circuit 41-metal alarm relay
42-big metal alarm relay 43-X-axis motor
44- rejecting mechanism Z-direction guide rails
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of metal detector based on metal detector includes being arranged at the surface or underface of article to be detected
And the metal detector vertical with the moving direction of article to be detected, and be arranged at vertical with the moving direction of article to be detected
Guide rail on removal equipment, the removal equipment be used for reject through metal detector detection article to be detected exist gold
Category, the metal detector is driven by metal detector controller 9, leading residing for the removal equipment and removal equipment
Rail is driven by rejecting actuator controller 16.
Specifically, the metal detector is arranged at the lower section of article to be detected.
As shown in figure 1, the metal detector is generally arranged at sizing material metal detection positioning workshop section 1, the removal equipment
For Pneumatic stamping cut-off knife or electronic rotation cut-off knife 19, Pneumatic stamping cut-off knife or electronic rotation cut-off knife 19 and rejecting mechanism Z-direction
Guide rail 44 may be contained within rejecting mechanism Y direction guide rail 18, and Pneumatic stamping cut-off knife or electronic rotation cut-off knife 19 are arranged at rejecting
On mechanism Y direction guide rail 18, rejecting mechanism X-direction guide rail, rejecting mechanism Y direction guide rail 18 are placed in metal impurities rotation
In cutting rejecting workshop section 2.The metal detector is fixed on sizing material conveyer bridge 6, and sizing material is sent successively by belt conveyor 7
Workshop section 2, subsequent production workshop section 3 are rejected to sizing material metal detection positioning workshop section 1, metal impurities rotary-cut.
As shown in Figure 3,4, the metal detector includes signal transmission circuit 10, multiple signals receiving circuit 20, signal
Process circuit 30 and warning execution circuit 40, the signal transmission circuit 10 is used for reception and sends from signal processing circuit 30
Signal, so as to metal detector surface formed electromagnetic field, the signal transmission circuit 10 output transmission signal connect to signal
Receive the signal input part of circuit 20；Per the two-way communication link between signal processing circuit 30 of signal receiving circuit 20 all the way；
Signal processing circuit 30 is used to judge per the transmission signal that all the way signal receiving circuit 20 sends with the presence or absence of abnormal, if existing
Abnormal, signal processing circuit 30 exports the signal input part of process signal to warning execution circuit 40；If there is no exception, lead to
There are no metal impurities in the article to be detected for crossing metal detector；Warning execution circuit 40 is used for metal detection dress of reporting to the police or drive
Put rejecting metal impurities.
The signal transmission circuit 10 includes transmitting coil 11, the first resonance modules 12, power amplifier module 13, first
The rank RC low pass filter blocks 15 of two-stage amplifier module 14 and three, the signal of the three ranks RC low pass filter blocks 15 is defeated
Enter the signal output part of end connection signal processing circuit 30, the signal output part connection first of three rank RC low pass filter blocks 15
The signal input part of two-stage amplifier module 14, the signal output part connection power amplification of the first two-stage amplifier module 14
The signal input part of device module 13, the signal output part of the power amplifier module 13 connects the signal of the first resonance modules 12
Input, the signal output part of first resonance modules 12 connects the signal input part of transmitting coil 11, the transmitting coil
11 signal output part exports the signal input part of transmission signal to signal receiving circuit 20.
The signal receiving circuit 20 include receiving coil 21, the second resonance modules 22, the second two-stage amplifier module 23,
Voltage comparator module 24 and second order RC lowpass filter module 25, the signal input part of the receiving coil 21 is used to receive
From the transmission signal of transmitting coil 11, the signal output part of receiving coil 21 connects the signal input of the second resonance modules 22
End, the signal output part of second resonance modules 22 connects the signal input part of the second two-stage amplifier module 23, and described the
One signal input part of the signal output part connection voltage comparator module 24 of two two-stage amplifier modules 23, the voltage ratio
Compared with the signal output part of another signal input part connection second order RC lowpass filter module 25 of device module 24, voltage comparator
The signal output part of module 24 connects the signal input part of signal processing circuit 30.
The signal processing circuit 30 includes the first chip 31, the second chip 32, the signal output of first chip 31
End connects respectively signal input part, the signal input of second order RC lowpass filter module 25 of three rank RC low pass filter blocks 15
End, the signal output part of the signal input part connection voltage comparator module 24 of the first chip 31, first chip 31 and the
Two-way communication link between two chips 32, the signal of the signal output part connection warning execution circuit 40 of second chip 32 is defeated
Enter end, the signal input part of the second chip 32 connects X-axis limit switch, Y-axis limit switch and Z axis limit switch, the second core
The two-way communication link also between serial ports touch screen of piece 32.
First chip 31 could be arranged to it is multiple, as shown in figure 4, being provided with two chips of model identical first
31st, the 3rd chip 33.
The warning execution circuit 40 includes metal alarm relay 41, big metal alarm relay 42, the metal report
The signal input part of alert relay 41, the signal input part of big metal alarm relay 42 are connected by relay drive circuit
The signal output part of the second chip 32, the signal output part of second chip 32 connects respectively X-axis step motor drive module
Signal input part, the signal input part of y-axis stepper motor drive module, the signal input part of Z axis step motor drive module.
Big metal refers to that the metal of substantial spoilage, big metal can be caused equipment to be defined to either direction size and be more than
The metal of 100mm.
The specific work process of this metal detector is as follows：
As shown in figure 4, after this metal detector is powered, the first chip 31 is solid to the input of signal transmission circuit 10 by P3.6
Determine the square wave model of frequency, the AC signal of fixed frequency is formed after three rank RC low pass filter blocks 15, by the one or two
Level amplifier module 14 is re-fed into power amplifier module 13 after amplifying, and then forms the AC signal of relatively high power, the signal
By the output of the first resonance modules 12 to transmitting coil 11, so as to form fixed electromagnetic signal on the surface of transmitting coil 11
.
Specifically, the receiving coil 21 of multiple signals receiving circuit 20 is respectively Y01 ... Y17, what transmitting coil 11 was formed
Signal is respectively fed in signal receiving circuit 20.Illustrate by taking receiving coil Y01 as an example, receiving coil 21 is received and carrys out spontaneous emission
After the AC signal of coil 11, garbage signal is filtered by the second resonance modules 22 and useful signal is carried out primary amplification,
Again the signal is amplified by the second two-stage amplifier module 23, the signal after amplification sends into the comparison of voltage comparator module 24
End is compared with the reference voltage of voltage comparator fixing end, and the square-wave signal for drawing more afterwards sends into the first chip 31
P0.0 feet.The fixing end reference voltage of voltage comparator module 24 is by the sensitivity of serial ports touch screen (man machine interface) menu setting
What signal got, sensitivity signal is sent to the first chip 31 by the serial ports P1.1 of the second chip 32, then by the first chip 31
Go out pwm pulse signal to P3.5 human hair combing wastes, by after second order RC lowpass filter module 25 formed direct current signal send into voltage ratio compared with
One end of device module 24 can draw the direct current signal of different amplitudes as benchmark voltage by pulse-width modulation PWM, so as to
Realize that receiving circuit sensitivity is adjustable.
First chip 31, the model of the second chip 32 are Chinese macrocrystalline Science and Technology Ltd. production
STC15F2K60S2 chips；The power amplifier module 13 includes power amplifier, the chip model of the power amplifier
For TDA2030A；First two-stage amplifier module 14 includes the first two-stage amplifier, first two-stage amplifier it is chip-shaped
Number for Texas Instruments companies of the U.S. production TL072CP chips；The second two-stage amplifier module 23 includes the
Two two-stage amplifiers, the chip model of second two-stage amplifier is the TL062 cores of Texas Instruments companies production
Piece；The voltage comparator module 24 includes voltage comparator, and the model HIT of the voltage comparator produces
HA17393 chips.
Signal receiving circuit 20 described in multichannel is arranged perpendicular to the moving direction of article to be detected, and is received per signal all the way
Spacing distance between circuit 20 is equal.
As shown in Fig. 2 metal detector width 34 is adopted in the present embodiment for the metal detector of 1000mm, according to reception
The characteristics of coil 21 receives signal, can in the Y-axis direction be divided into y01, y02 ... y17 and y01＆02, y02＆03 ... y16＆
17 totally 33 cut central point.Central point is cut as the center of circle, with this 33 using the Pneumatic stamping cut-off knife or electricity of a diameter of 100mm
Metal impurities can be cut rejecting by dynamic rotation cut-off knife 19.
The rejecting of metal impurities can be rejected using different modes such as electrical and pneumatic punching presses.
Present invention also offers a kind of metal method for detecting of the metal detector based on metal detector, if signal connects
The receiving coil 21 received in circuit 20 is N roads, is in N number of cutting with the center of circle of each receiving coil 21 as central point is cut
Midpoint between heart point, and the center of circle of two adjacent receiving coils 21 cuts central point to cut central point and being N-1,
The sum for cutting central point is 2N-1, and the point coordinates that cuts as in Y direction has 2N-1.
First chip 31 receives the transmission signal from voltage comparator module 24, and judges that specifically certain is all the way or several
The transmission signal that road signal receiving circuit 20 sends exists abnormal；Judge that the transmission signal for sending has abnormal signal and receives again
The article to be detected of the detection of circuit 20 whether there is big metal, be specifically divided into following 4 kinds of situations：
Situation one：There is abnormal, first chip 31 in the transmission signal that only all the way signal receiving circuit 20 sends
The transmission signal sent according to voltage comparator module 24 is the pulsewidth of pulse signal to calculate metal length, so as to judge gold
Whether category is elongated big metal, and the pulsewidth is the time that the signal that the first chip 31 receives is affected by metal, arteries and veins
Width is multiplied by the speed of article movement to be detected and is judged as the presence of big metal in article to be detected more than 100mm, if big metal,
Then the first chip 31 sends big metal alarm signal to the second chip 32, by the second chip 32 by big metal alarm signal by after
Electrical apparatus driving circuit delivers to big metal alarm relay 42, metal detector emergency shutdown；If not big metal, then second
Chip 32 judges that the Y-axis that metal is located cuts central point, while reading the transporting velocity of belt feeder, calculates metal and reaches rejecting
Time required for equipment determines that X-axis cuts a little, respectively by X-axis step motor drive module, y-axis stepper motor drive module
Signal is sent into X-axis motor, y-axis stepper motor, removal equipment is sent to into specified location, when metal reaches removal equipment
During position, starting Z axis motor carries out cutting operation, and article to be detected waste material when into next process passes through after cutting
Waste gate is discharged；
Situation two：There is exception, first chip in the transmission signal that the adjacent signal receiving circuit 20 of two-way sends
31 transmission signals sent according to voltage comparator module 24 are the pulsewidth of pulse signal to calculate metal length, so as to judge
Go out whether metal is elongated big metal, if big metal, then the first chip 31 sends big metal and reports to the police to the second chip 32
Signal, big metal alarm relay 42 is delivered to by the second chip 32 by big metal alarm signal by relay drive circuit, gold
Category detection device emergency shutdown；If not big metal, then the second chip 32 is by between the center of circle of two receiving coils 21
Midpoint cut central point as Y-axis, Y-axis is cut into central point and is exported to y-axis stepper motor, then X-axis will be calculated and cut
Point is exported to X-axis motor, respectively by X-axis step motor drive module, y-axis stepper motor drive module to X-axis stepping
Motor, y-axis stepper motor send into signal, and removal equipment is sent to into specified location, when metal reaches the position of removal equipment, open
Dynamic Z axis motor carries out cutting operation, and article to be detected waste material when into next process is discharged by waste material after cutting
Mouth is discharged；
Situation three：There is exception in the transmission signal that more than two-way or two-way non-conterminous signal receiving circuit 20 sends,
First chip 31 is processed successively according to situation one；
Situation four：There is exception, institute in the transmission signal that more than three tunnels or three tunnels adjacent signal receiving circuit 20 sends
State the first chip 31 and directly judge that the metal is big metal, start big metal alarm relay 42, metal detector promptly stops
Machine.
The present invention determines position of the metal impurities in material by metal detector, and metal detector can be picked accurately
Except metal impurities, the present invention can not only be applied to rubber industry field, can be applied in food, medicine, timber etc. multiple
In field.
Claims (10)
1. a kind of metal detector based on metal detector, it is characterised in that：Including being arranged at just going up for article to be detected
Side or underface and the metal detector vertical with the moving direction of article to be detected, and it is arranged at the shifting with article to be detected
Removal equipment on the vertical guide rail in dynamic direction, the removal equipment is used to reject the thing to be detected through metal detector detection
The metal that product are present, the metal detector is driven by metal detector controller, and the removal equipment and rejecting set
Standby residing guide rail is driven by rejecting actuator controller.
2. a kind of metal detector based on metal detector as claimed in claim 1, it is characterised in that：The metal is visited
Surveying instrument includes that signal transmission circuit (10), multiple signals receiving circuit (20), signal processing circuit (30) and warning perform electricity
Road (40), wherein,
Signal transmission circuit (10), for receiving the signal that signal processing circuit (30) sends, so as on metal detector surface
Electromagnetic field is formed, the signal transmission circuit (10) exports the signal input part of transmission signal to signal receiving circuit (20)；
Per signal receiving circuit (20) two-way communication link between signal processing circuit (30) all the way；
Signal processing circuit (30), for judging that the transmission signal that signal receiving circuit (20) sends whether there is exception, if
There is abnormal, the signal input part of signal processing circuit (30) output process signal to execution circuit of reporting to the police (40)；If not existing
It is abnormal, then there are no metal impurities by the article to be detected of metal detector；
Warning execution circuit (40), for reporting to the police or driving metal detector to reject metal impurities.
3. a kind of metal detector based on metal detector as claimed in claim 2, it is characterised in that：The signal is sent out
Transmit-receive radio road (10) includes transmitting coil (11), the first resonance modules (12), power amplifier module (13), the first two-stage amplifier
Module (14) and three ranks RC low pass filter blocks (15), the signal input part of the three ranks RC low pass filter blocks (15)
The signal output part of connection signal processing circuit (30), the signal output part connection first of three ranks RC low pass filter blocks (15)
The signal input part of two-stage amplifier module (14), the signal output part connection power of the first two-stage amplifier module (14)
The signal input part of amplifier module (13), the signal output part of the power amplifier module (13) connects the first resonance modules
(12) signal input part, the signal input of signal output part connection transmitting coil (11) of first resonance modules (12)
End, the signal output part of the transmitting coil (11) exports the signal input part of transmission signal to signal receiving circuit (20).
4. a kind of metal detector based on metal detector as claimed in claim 3, it is characterised in that：The signal connects
Circuit (20) is received including receiving coil (21), the second resonance modules (22), the second two-stage amplifier module (23), voltage comparator
Module (24) and second order RC lowpass filter module (25), the signal input part of the receiving coil (21) be used to receiving from
The transmission signal of transmitting coil (11), the signal output part of receiving coil (21) connects the signal input of the second resonance modules (22)
End, the signal output part of second resonance modules (22) connects the signal input part of the second two-stage amplifier module (23), institute
State a signal input part of signal output part connection voltage comparator module (24) of the second two-stage amplifier module (23), institute
State the signal output of another signal input part connection second order RC lowpass filter module (25) of voltage comparator module (24)
End, the signal input part of signal output part connection signal processing circuit (30) of voltage comparator module (24).
5. a kind of metal detector based on metal detector as claimed in claim 4, it is characterised in that：At the signal
Including the first chip (31), the second chip (32), the signal output part of first chip (31) connects respectively reason circuit (30)
The signal input part of three ranks RC low pass filter blocks (15), the signal input part of second order RC lowpass filter module (25), the
The signal output part of signal input part connection voltage comparator module (24) of one chip (31), first chip (31) and the
Two-way communication link between two chips (32), signal output part connection warning execution circuit (40) of second chip (32)
Signal input part, signal input part connection X-axis limit switch, the Y-axis limit switch of the second chip (32) and Z axis are spacing opens
Close, the second chip (32) two-way communication link also between serial ports touch screen.
6. a kind of metal detector based on metal detector as claimed in claim 5, it is characterised in that：The warning is held
Row circuit (40) includes metal alarm relay (41), big metal alarm relay (42), the metal alarm relay (41)
Signal input part, big metal alarm relay (42) signal input part by relay drive circuit connect the second chip
(32) signal output part, the signal output part of second chip (32) connects respectively the letter of X-axis step motor drive module
Number input, the signal input part of y-axis stepper motor drive module, the signal input part of Z axis step motor drive module.
7. a kind of metal detector based on metal detector as claimed in claim 5, it is characterised in that：First core
Piece (31), the model of the second chip (32) are the STC15F2K60S2 chips of Chinese macrocrystalline Science and Technology Ltd. production；It is described
Power amplifier module (13) includes power amplifier, and the chip model of the power amplifier is TDA2030A；One or two grade
Amplifier module (14) includes the first two-stage amplifier, and the chip model of first two-stage amplifier is U.S. Texas
The TL072CP chips of Instruments companies production；The second two-stage amplifier module (23) includes the two or two grade of amplification
Device, the chip model of second two-stage amplifier is the TL062 chips of Texas Instruments companies production；The electricity
Pressure comparator module (24) includes voltage comparator, the model HIT production of the voltage comparator
HA17393 chips.
8. a kind of metal detector based on metal detector as claimed in claim 6, it is characterised in that：Believe described in multichannel
Number receiving circuit (20) is arranged perpendicular to the moving direction of article to be detected, and per between signal receiving circuit (20) all the way
Spacing distance it is equal.
9. a kind of metal method for detecting of the metal detector based on metal detector as claimed in claim 6, its feature
It is：If the receiving coil (21) in signal receiving circuit (20) is N roads, the center of circle with each receiving coil (21) is to cut
Central point is N number of midpoint cut between central point, and the center of circle of two adjacent receiving coils (21) to cut center
Point is N-1 and cuts central point, and the sum for cutting central point is 2N-1, and as in Y direction point coordinates setting is cut
For 2N-1.
10. a kind of metal method for detecting of the metal detector based on metal detector as claimed in claim 9, its feature
It is：First chip (31) receives the transmission signal from voltage comparator module (24), and judge it is concrete certain all the way or
The transmission signal that several signals receiving circuit (20) sends exists abnormal；Judge that the transmission signal for sending has abnormal signal again
The article to be detected of receiving circuit (20) detection whether there is big metal, be specifically divided into following 4 kinds of situations：
Situation one：There is abnormal, the first chip (31) root in the transmission signal that only all the way signal receiving circuit (20) sends
The transmission signal sent according to voltage comparator module (24) is the pulsewidth of pulse signal to calculate metal length, so as to judge
Whether metal is elongated big metal, if big metal, then the first chip (31) sends big metal report to the second chip (32)
Alert signal, big metal alarm relay is delivered to by the second chip (32) by big metal alarm signal by relay drive circuit
(42), metal detector emergency shutdown；If not big metal, then the second chip (32) judges that the Y-axis that metal is located is cut out
Central point is cut, while reading the transporting velocity of belt feeder, the time required for metal arrival removal equipment that calculates determines that X-axis cuts
Point, is sent respectively by X-axis step motor drive module, y-axis stepper motor drive module to X-axis motor, y-axis stepper motor
Enter signal, removal equipment is sent to into specified location, when metal reaches the position of removal equipment, starting Z axis motor is carried out
Operation is cut, article to be detected waste material when into next process is discharged by waste gate after cutting；
Situation two：There is exception, first chip in the transmission signal that the adjacent signal receiving circuit of two-way (20) sends
(31) transmission signal sent according to voltage comparator module (24) is the pulsewidth of pulse signal to calculate metal length, so as to
Judge whether metal is elongated big metal, if big metal, then the first chip (31) sends greatly to the second chip (32)
Metal alarm signal, by the second chip (32) by big metal alarm signal by relay drive circuit deliver to big metal report to the police after
Electrical equipment (42), metal detector emergency shutdown；If not big metal, then the second chip (32) is by two receiving coils
(21) the midpoint between the center of circle cuts central point as Y-axis, Y-axis is cut into central point and is exported to y-axis stepper motor, then will meter
Calculation obtains X-axis and cuts to export to X-axis motor, is driven by X-axis step motor drive module, y-axis stepper motor respectively
Module to X-axis motor, y-axis stepper motor send into signal, and removal equipment is sent to into specified location, set when metal reaches rejecting
During standby position, starting Z axis motor carries out cutting operation, article to be detected waste material when into next process after cutting
Discharged by waste gate；
Situation three：There is exception, institute in the transmission signal that more than two-way or two-way non-conterminous signal receiving circuit (20) sends
State the first chip (31) to be processed successively according to situation one；
Situation four：There is exception in the transmission signal that more than three tunnels or three tunnels adjacent signal receiving circuit (20) sends, described
First chip (31) directly judges that the metal is big metal, starts big metal alarm relay (42), and metal detector is urgent
Shut down.
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| CN110297276A (en) * | 2019-07-23 | 2019-10-01 | 广州市贝云科技有限公司 | Metal detection device |
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| CN106646628B (en) | 2019-05-31 |
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