CN103197352A - Multifunctional wall body detecting instrument - Google Patents
Multifunctional wall body detecting instrument Download PDFInfo
- Publication number
- CN103197352A CN103197352A CN2013100781209A CN201310078120A CN103197352A CN 103197352 A CN103197352 A CN 103197352A CN 2013100781209 A CN2013100781209 A CN 2013100781209A CN 201310078120 A CN201310078120 A CN 201310078120A CN 103197352 A CN103197352 A CN 103197352A
- Authority
- CN
- China
- Prior art keywords
- circuit
- receiving coil
- wall body
- coil
- water pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to the field of building structure detection, in particular to a wall body detecting instrument. The multifunctional wall body detecting instrument includes five parts: a first part is a water pipe detection circuit, and the water pipe detection circuit is composed of a capacitive sensor used for detecting a water pipe, a monostable trigger circuit and a mean value circuit which are connected with one another in series sequentially; a second part is an electric wire detection circuit, and the electric wire detection circuit is composed of copper pour, a high-impedance amplifying circuit, an impedance conversion circuit which are connected with one another in series sequentially; a third part is a metal detection circuit, and the metal detection circuit is composed of an emission winding, a current syntonic circuit, a difference receiving coil, an amplifying circuit, a filter circuit and a biasing circuit which are connected with one another in series sequentially; a fourth part is an auxiliary circuit, and the auxiliary circuit is composed of an infrared transmitter and an infrared receiver which are connected with each other in series sequentially; and a fifth part is a control circuit which comprises a controller. The first part, the second part, the third part, the fourth part are connected with the fifth part respectively and independently. The multifunctional wall body detection is compact in size, low in manufacture cost, simple in craftsmanship, and good in manufacture repeatability.
Description
Technical field
The present invention relates to the building structure detection range, relate more specifically to a kind of body of wall detection instrument.
Background technology
During house decoration checked, water pipe, electric wire, metal reinforcing bar in the metope often caused certain influence to construction, even accidents caused, cause personnel's property loss.If can before construction, survey, find out the layout of the interior water pipe of metope, electric wire, metal reinforcing bar, then can prevent the generation of relevant causality loss effectively.
Present industrial control field has specially at metal the sensor of objects such as electric wire.For example, in present industrial control field, in order to detect the defective of metal parts, usually use current vortex sensor, this eddy current sensor has good resolution and the linearity.But, at building field, emphasis be the investigative range of metal detection.Thereby such sensor is not suitable for the body of wall detection that finishing checks industry.Comprise the detection of other two kinds of objects: the detection of electric wire and water pipe, special sensor is arranged in market, but also shortcoming to some extent such as with high costs, size and precision index.
Therefore, press on the market a kind of compact dimensions, cost of manufacture is lower, manufacture craft is simple, make the good multifunctional wall body detection instrument of repeatability.
Summary of the invention
Purpose of the present invention overcomes the deficiencies in the prior art exactly, the multifunctional wall body detection instrument that provide a kind of compact dimensions, cost of manufacture is lower, manufacture craft is simple, making repeatability is good.
Concrete technical scheme of the present invention is: a kind of multifunctional wall body detection instrument comprises five parts:
First is the water pipe detection circuit, is composed in series in proper order with capacitive transducer, single-shot trigger circuit, average circuit by water gage glass;
Second portion is the electric wire detection circuit, is composed in series in proper order with covering copper, high impedance amplifying circuit, impedance inverter circuit by visiting electric wire;
Third part is the metal detection circuit, is composed in series in proper order by emission winding, parallel resonance circuit, differential received coil, amplifying circuit, filtering circuit, biasing circuit;
The 4th part is auxiliary circuit, is composed in series in proper order by infrared transmitter, infrared remote receiver;
The 5th part is control circuit, comprises controller;
Described first, second portion, third part, the 4th part are independent respectively to be connected with described the 5th part.
As preferably, described multifunctional wall body detection instrument also comprises the main body pcb board, described water gage glass with capacitive transducer, described spy electric wire with cover copper, described differential received coil is integrated on the described main body pcb board.
As preferably, described controller comprises that water pipe is surveyed control module, circuit is surveyed control module, metal detection control module; Described water pipe detection control module, circuit are surveyed control module, the metal detection control module is integrated in the described controller; Surveying control module with described water pipe after described first water pipe detection circuit and described the 4th part auxiliary circuit parallel connection is connected; Described second portion electric wire detection circuit is surveyed control module with described circuit and is connected; Described third part metal detection circuit is connected with described metal detection control module.
As preferably, described main body pcb board comprises backboard and top board two sides, described first water pipe detection circuit and described second portion electric wire detection circuit are integrated on the described backboard face, and described third part metal detection circuit is integrated on the described top board face.
As preferably, described water gage glass comprises first pole plate, second pole plate, tri-electrode with capacitive transducer, described first pole plate, second pole plate, tri-electrode constitute electric capacity together, described second pole plate is as the main pole of described electric capacity, described first pole plate and described second pole plate are cascaded, and constitute the inferior utmost point of described electric capacity.
As preferably, described differential received coil comprises first receiving coil, second receiving coil, the 3rd receiving coil, the 4th receiving coil and alihnment coil, described first receiving coil, second receiving coil, the 3rd receiving coil, the series connection of the 4th receiving coil, described alihnment coil is connected among described the 3rd receiving coil and described the 4th receiving coil, described first receiving coil, the 3rd receiving coil, the 4th receiving coil are positioned on the described top board face, and described second receiving coil is positioned on the described backboard face.
As preferably, described spy electric wire is drawn together first copper-clad plate, second copper-clad plate, the 3rd copper-clad plate with covering copper-clad, described first copper-clad plate, second copper-clad plate, the alignment of the 3rd copper-clad plate horizontal center line and equidistantly be arranged on the described backboard face.
As preferably, described first water pipe detection circuit comprises that also first reference voltage provides unit, second reference voltage to provide unit, power supply, narrow-band impulse to produce circuit, described narrow-band impulse produces circuit and is connected on described single-shot trigger circuit between described average circuit, and described power supply is respectively described first reference voltage provides unit, second reference voltage to provide unit, narrow-band impulse to produce circuit and average circuit supply.
As preferably, described second portion electric wire detection circuit comprises that also bias voltage provides the unit, and it is described high impedance amplifying circuit, impedance inverter circuit power supply that described bias voltage provides the unit.
As preferably, described emission winding is from coiling, comprises common enameled wire, skeleton, and described common enameled wire uniform winding is on described skeleton.
Compared with prior art, multifunctional wall body detection instrument compact dimensions of the present invention, cost of manufacture is lower, manufacture craft is simple, it is good to make repeatability.
Description of drawings
Fig. 1: multifunctional wall body detection instrument circuit block diagram of the present invention.
Fig. 2: the layout situation map of three kinds of sensors of multifunctional wall body detection instrument of the present invention.
Fig. 3: multifunctional wall body detection instrument of the present invention is used for measuring the circuit block diagram of capacitor plate capacitance.
Fig. 4: multifunctional wall body detection instrument of the present invention is used for measuring the circuit theory diagrams of capacitor plate capacitance.
Fig. 5: multifunctional wall body detection instrument of the present invention is used for pasting the auxiliary circuit schematic diagram that wall detects.
Fig. 6: multifunctional wall body detection instrument of the present invention is for the treatment of the high impedance amplifying circuit block diagram of signal.
Fig. 7: multifunctional wall body detection instrument of the present invention is for the treatment of the high impedance amplifying circuit schematic diagram of signal.
Fig. 8: multifunctional wall body detection instrument transmitting coil winding synoptic diagram of the present invention.
Fig. 9: multifunctional wall body detection instrument parallel resonance circuit theory diagrams of the present invention.
Figure 10: multifunctional wall body detection instrument differential received coil decomposing schematic representation of the present invention.
Figure 11: multifunctional wall body detection instrument differential received coil output signal processing circuit block diagram of the present invention.
Figure 12: multifunctional wall body detection instrument differential received coil output signal processing circuit schematic diagram of the present invention.
Figure 13: multifunctional wall body detection instrument water pipe locator(-ter) process flow diagram of the present invention.
Figure 14: multifunctional wall body detection instrument electric wire locator(-ter) process flow diagram of the present invention.
Figure 15: multifunctional wall body detection instrument metal detection program flow diagram of the present invention.
Embodiment
Below in conjunction with further describing the technical program with reference to the accompanying drawings, only be used for explaining the present invention but should describe, and can not be interpreted as limitation of the present invention.
Ask for an interview Fig. 1-Figure 12, a kind of multifunctional wall body detection instrument of the present invention comprises five parts: first is the water pipe detection circuit, is composed in series with capacitive transducer 300, single-shot trigger circuit 304, average circuit 307 orders by water gage glass; Second portion is the electric wire detection circuit, is composed in series in proper order with covering copper 14, high impedance amplifying circuit 701, impedance inverter circuit 703 by visiting electric wire; Third part is the metal detection circuit, is composed in series by emission winding 100, parallel resonance circuit 110, differential received coil 9, amplifying circuit 393, filtering circuit 394, biasing circuit 395 orders; The 4th part is auxiliary circuit, is composed in series by infrared transmitter 52, infrared remote receiver 53 orders; The 5th part is control circuit, comprises controller 400; First, second portion, third part, the 4th part are independent respectively to be connected with the 5th part; Controller 400 comprises that water pipe is surveyed control module, circuit is surveyed control module, metal detection control module; Water pipe detection control module, circuit are surveyed control module, the metal detection control module is integrated in the controller 400; Surveying control module with water pipe after first's water pipe detection circuit and the 4th part auxiliary circuit parallel connection is connected; Second portion electric wire detection circuit is surveyed control module with circuit and is connected; Third part metal detection circuit is connected with the metal detection control module.
A kind of multifunctional wall body detection instrument of the present invention also comprises main body pcb board 1, water gage glass with capacitive transducer 4, visit electric wire with cover copper 14, differential received coil 9 is integrated on the main body pcb board 1.Main body pcb board 1 comprises backboard 2 and top board 3 two sides, and first's water pipe detection circuit and second portion electric wire detection circuit are integrated on 2 of the backboards, and third part metal detection circuit is integrated on 3 on the top board.
Water gage glass comprises first pole plate 4, second pole plate 5, tri-electrode 6 with capacitive transducer 4, first pole plate 4, second pole plate 5, tri-electrode 6 constitute electric capacity 301 together, second pole plate 5 is as the main pole of electric capacity 301, and first pole plate 4 and second pole plate 6 are cascaded, and constitutes the inferior utmost point of electric capacity 301.
Differential received coil 9 comprises first receiving coil 8, second receiving coil 9, the 3rd receiving coil 10, the 4th receiving coil 11 and alihnment coil 12, first receiving coil 8, second receiving coil 9, the 3rd receiving coil 10,11 series connection of the 4th receiving coil, alihnment coil 12 is connected among the 3rd receiving coil 10 and the 4th receiving coil 11, first receiving coil 8, the 3rd receiving coil 10, the 4th receiving coil 11 are positioned on 3 on the top board, and second receiving coil 9 is positioned on 2 of the backboards.
Visit electric wire and comprise that with covering copper 14 first copper-clad plate 13, second copper-clad plate 14, the 3rd copper-clad plate 15, the first copper-clad plates 13, second copper-clad plate 14, the 3rd copper-clad plate 15 horizontal center lines align and equidistantly are arranged on 2 of the backboards.
First's water pipe detection circuit comprises that also first reference voltage provides unit 302, second reference voltage to provide unit 303, power supply 305, narrow-band impulse to produce circuit 306, narrow-band impulse produces circuit 306 and is connected on single-shot trigger circuit 304 between average circuit 307, and power supply 305 is respectively first reference voltage provides unit 302, second reference voltage to provide unit 303, narrow-band impulse to produce circuit 306 and 307 power supplies of average circuit.
Second portion electric wire detection circuit comprises that also bias voltage provides unit 702, and bias voltage provides unit 702 to be high impedance amplifying circuit 701, impedance inverter circuit 703 power supplies.
Emission winding 100 is from coiling, comprises common enameled wire 101, skeleton 106, and common enameled wire 101 uniform winding are on skeleton 106.
Below in conjunction with the concrete elaboration of accompanying drawing a kind of multifunctional wall body detection instrument water pipe detecting function implementation procedure of the present invention.
The design of this part sees also Fig. 2, Fig. 3, Fig. 4 and Fig. 5, comprises the capacitor plate synoptic diagram among Fig. 2, and Fig. 3, Fig. 4 are the capacitor plate capacitance measurement circuit.Metering circuit is divided into first reference voltage provides unit 302, second reference voltage that unit 303 is provided, single-shot trigger circuit 304, and narrow-band impulse produces circuit 306, average circuit 307.All circuit units are all powered by power supply 305.
Second pole plate 5 is the main pole of electric capacity, and first pole plate 4 and the 36 series connection constitute the secondary of electric capacity.Main capacitance pole plate and time capacitor plate insert respectively in the multivibrator 20.The multivibrator model is HC4538, and its inside comprises the two independent multivibrator.Primary and secondary capacitor plate and the 37 resistance 37, the 38 resistance 38 constitute the RC circuit.The 30 resistance 30, the 31 resistance 31 dividing potential drops obtain the RC limiting voltage of main capacitance pole plate.The 34 resistance 34, the 35 resistance 35 dividing potential drops constitute the RC limiting voltage of time capacitor plate.The time constant of two-way RC circuit has determined oscillator output duty of ratio, so measure the output duty of ratio, can obtain the capacitance of capacitor plate.In addition, the built-in DAC module 36 of controller can be regulated the limiting voltage on time capacitor plate.For the variation of measuring pad capacitance, the two independent output terminal inserts OR-NOT circuit 21, obtains the narrow-band ping of a reaction capacitance size.In order to guarantee the investigative range of instrument, controller needs regulating circuit to be operated in duty, and the 23 triode 23 can not be in saturated or cut-off state.Controller internal PID regulator.The input of regulator is the voltage signal of the built-in AD module collection of controller.The AD module will be carried out signal sampling to the 24 output terminal 24.The output of regulator is the magnitude of voltage of DAC module output, and this magnitude of voltage exports the 26 port 36 to, carries out the fine setting of pulse signal dutycycle.The average circuit obtains the signal average by the 25 resistance 25 and big electric capacity 26, and it has reacted the dutycycle of output pulse signal.The variable quantity of the DC level that obtains is relevant with the changes in capacitance amount.In order to allow instrument have best sensitivity, the dc voltage value of the 24 output terminal 24 need be adjusted to 1/2VCC, and this voltage is the target voltage of PID controller.The clock signal of multivibrator is provided by controller built-in timer module.Timer module is output as the 29 output terminal 29, and signal frequency is 20kHz.The 40 electric capacity 40, the 41 electric capacity 41, the 42 electric capacity 42 are three decoupling capacitances, and power supply is carried out filtering.
Need to prove, before carrying out the water pipe measuring ability, at first judge by the subsides wall testing circuit of Fig. 5 whether instrument is in the wall state that pastes.Infrared-emitting diode 52, under the control of control port 55, in running order always.Because the existence of baffle plate 58, infrared signal can't influence infrared remote receiver 53, and output terminal the 56 port 56 of infrared remote receiver 53 is in high level.When instrument is pressed close to surface of wall 54, infrared signal is through the body of wall reflection, and signal is received by infrared remote receiver 53, and output signal produces saltus step, and indicating instrument is in the wall state that pastes.This moment, capacitive transducer was started working.
The program circuit of water pipe detecting function is asked for an interview Figure 13.The water pipe detecting function of instrument at first needs to be chosen earlier, pastes wall then and detects.Now be in subsides wall state up to the instrument judgement, just begin to carry out calibration procedure.The output direct current signal of calibrating sensors just stops calibration near 1/2VCC.Note signal of sensor this moment, and the beginning process of measurement.When the difference of the direct current signal amplitude of exporting and initial moment voltage amplitude surpasses certain limit, there is water pipe to occur near the indicating instrument.The direct current signal of output is monitored after the controller, begin decay up to the difference of signal and original signal, then indicator signal begins to carry out the center and indicates.By the built-in fitting formula of controller, calculate instrument by sensor output signal and depart from the degree of center and show.In measuring process, if instrument leaves body of wall, perhaps the user selects other detecting functions, and program will empty the data of starting potential and adjustable side magnitude of voltage, wait for next measuring process.
Below in conjunction with the concrete elaboration of accompanying drawing a kind of multifunctional wall body detection instrument electric wire detecting function implementation procedure of the present invention.
Ask for an interview Fig. 2, Fig. 6 and Fig. 7.First copper-clad plate, 13, the second copper-clad plates, 14, the three copper-clad plates 15 that detection is used run on one plane, and three copper-clad plates are equidistantly arranged, and the horizontal center line alignment.Circuit design comprises that mainly bias voltage provides unit 702, high impedance amplifying unit 701 and impedance converter unit 703.
When copper-clad plate during near electric wire, the alternating magnetic field that produces because of the exchange current in the electric wire forms eddy current in copper-clad plate, and whole copper-clad plate this moment is not an equipotentiality body, and the test point in each piece copper-clad plate is picked out, and obtains faint 50Hz signal.The signal that obtains in the copper-clad plate is inserted the high impedance amplifying circuit.The 71 electric capacity 71 is capacitance among Fig. 7, removes the DC component in the signal.Deflection voltage is by the 81 resistance 81, the 82 resistance 82 dividing potential drops obtain, insert the grid of first order metal-oxide-semiconductor 73 through the 72 resistance 72, for three filter capacitors of stable access that guarantee bias voltage, the 85 electric capacity 85, the 86 electric capacity 86, the 87 electric capacity 87 adopt 104 electric capacity, are used for removing signal noise.The output voltage of first order metal-oxide-semiconductor 73 is from drain electrode output.Metal-oxide-semiconductor 74 main effects in the second level are impedance conversion, and enlargement factor is close to 1, by 80 outputs of source electrode port.First order metal-oxide-semiconductor 73 and second level metal-oxide-semiconductor 74 are integrated in the same chip 75.Three cover copper polar plate is arranged side by side, and helps to judge the center of electric wire.
The program circuit of electric wire detecting function is asked for an interview Figure 14.The instrument start enters the electric wire detecting pattern later automatically.Controller is by the output voltage of continuous three copper-clad plates of collection of built-in AD module.Calculate the peak-to-peak value voltage of output 50Hz signal.Three crest voltage are carried out normalized.Next, program is judged the relation between three voltage peak-to-peak values.When the difference between three signal amplitudes is more or less the same, do not carry out the center indication, only according to the average of three voltages, by the built-in fitting formula of controller, carry out the intensity indication, namely demonstrate electric wire from the distance of instrument.When three signal amplitudes differ bigger, carry out the center and show, and utilize the signal of amplitude maximum, by built-in fitting formula, carry out intensity and show.
Below in conjunction with the concrete elaboration of accompanying drawing a kind of multifunctional wall body detection instrument metal detection function implementation procedure of the present invention.
Ask for an interview Fig. 2, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, the realization of metal detection function need utilize emission around, 100, differential received coil 9, alihnment coil 12, and filtering circuit 394 and biasing circuit 395 are finished.Emission winding 100 is from coiling, as shown in Figure 8, is formed at skeleton 106 by common enameled wire 101 uniform winding, has certain inductance value.In the place in circuit, select the 102 suitable electric capacity 102 can constitute parallel resonance circuit 110.The pumping signal 103 of this resonant circuit comes from the square-wave signal that the controller timer module produces, and the frequency of square-wave signal and phase place are by programmed control.The square wave of the 104 resistance 104 and 105 pairs of generations of the 105 electric capacity carries out smoothly.
An electric current produces a magnetic field in the coil, with differential received coil 9 interlinkages, produces induced signal output at differential received coil 9.Because differential received coil 9 adopts the difference coil to receive form, when not having tested metal object around the instrument, through the parameter designing of receiving coil, the output signal that can guarantee receiving coil is 0, and this moment, the difference coil was in equilibrium state.When having metal object around the instrument, metal object will influence electromagnetic field distribution, cause the magnetic fluxes of differential received coil 9 to change, and finally cause the variation of magnitude of voltage and the phase value of output signal.
The design's differential received coil has adopted the PCB coil, and the differential received coil all designs on double-layer circuit board.Ask for an interview Figure 10, in order to guarantee the equilibrium state of differential received coil, need design different around to coil connect mutually.Therefore, the design's difference coil comprises following four parts: the first receiving coil group, 8, the second receiving coils, 9, the three receiving coils, 10, the four receiving coils 11.Four receiving coils are series relationship, and and launch the winding maintenance with one heart.: the first receiving coil group 8 and the 4th receiving coil 11 around to be consistent and second receiving coil 9, the 3rd receiving coil 10 around on the contrary.Therefore, advanced the appropriate design to coil, can guarantee is not having under the situation of testee, and the summation of coil flux amount is zero.The design of alihnment coil 12 can guarantee, exists in the circuit board size under the situation of mismachining tolerance, still can reach an equilibrium state preferably.Alihnment coil 12 is connected between the 3rd receiving coil 10, the 4th receiving coil 11.Alihnment coil 12 moves towards identical with one heart by two, but the different coil of radius is formed.Radius is less is called inner ring 135, and radius is bigger is called outer ring 136.These two coils be divided into four sections: the angle of first section 141, the second sections 142, the three sections 143, the four sections 144, four sections camber lines is followed successively by 24 °, 48 °, 96 °, 192 °.By 4 pairs of metal-oxide-semiconductor switches: above-mentioned each section circular arc of the 3rd metal-oxide-semiconductor switch 150, the four metal-oxide-semiconductor switches, 151, the five metal-oxide-semiconductor switches, 152, the six metal-oxide-semiconductor switches, 153 gatings is that inner ring or outer ring seal in the receiving coil.Therefore the difference of the receiving area that the circular arc of different radii surrounds, selects the radian of different angles to insert receiving coil, can change the receiving area of receiving coil.Thereby can reach the fine setting purpose of difference coil by the gating of metal-oxide-semiconductor, to guarantee the balance of difference coil.Whether the difference coil self arrive equilibrium state, will directly influence the investigative range of instrument, and therefore, the design of alihnment coil is very important in the balancing coil.
Be mixed with more noise signal in the output signal of detecting coil 390, and signal itself is very faint.For reaching the purpose of metal detection, the present invention has designed signal processing circuit, as Figure 11, shown in Figure 12, for the treatment of output signal.Circuit is divided into the biasing circuit 395 of amplifying circuit 393, filtering circuit 394 and back level, and amplifying circuit 393 is in-phase amplification circuit, and filtering circuit 394 is unlimited gain filtering circuit.
First operational amplifier, 391 models that amplifier section adopts are TLC2272, and the ratio of the 401 resistance 401 and the 402 resistance 402 has determined the enlargement factor of amplifier.Wave filter is unlimited gain feedback filter, designs based on second operational amplifier 392, and model is TLC2272.First operational amplifier 391 and the second used operational amplifier 392 of wave filter that in-phase amplifier adopts are integrated in the same chip.The amplifying circuit in-phase input end has adopted the LC filtering circuit, constituted by chip inductor 416 and patch capacitor 420, amplifier input resistance the 401 resistance 401 and feedback resistance the 402 resistance 402 have determined signal amplification factor, and the 415 electric capacity 415 is that a little electric capacity is done frequency compensation.The 418 electric capacity 418 is for putting straight electric capacity, and the 419 resistance 419 is build-out resistor, in the signal output filter.By selecting 411 resistance 411, four, 112 resistance 412, four, 113 electric capacity 413, four, 114 electric capacity 414, can obtain the cutoff frequency of wave filter.The cutoff frequency of this filtering circuit and the frequency of pumping signal are consistent, and are 5KHz.For gathering output signal, needing to increase DC component in signal, make signal voltage in AD adopts the conversion range of module 405.DC component is obtained by the 407 resistance 407 and the 408 resistance 408 dividing potential drops.Output signal was advanced the 404 electric capacity 404 and was not with DC component, and the 419 resistance 419 and the 410 electric capacity 410 have constituted a RC low-pass filter.
In controller, will handle the data that the AD sampling module obtains, employing be fft algorithm, calculate the phase place of output signal.Because signal frequency is fixed as 5KHz herein, so adopt the fixed point fft algorithm to obtain the phase information of signal, again this phase place to be compared with the phase place of square-wave signal, the leading or hysteresis of phase place has reflected the magnetic permeability of testee.Because ferrous metal has different magnetic permeabilities with the non iron metal, is ferrous metal or non iron metal so can go out object to be detected by this difference identification.
The present invention realizes that the program circuit of metal detection asks for an interview Figure 15, after the instrument start, when the user selects the metal detection function, enters the metal detection state.Controller sends the excitation square-wave signal, makes the emission winding be operated in the parallel resonance state.Carry out the AD sampling, and note the phase information of square-wave signal this moment.After finishing sampling, the data that obtain are carried out mean filter, the processing of methods such as middle finger filtering.Calculate the phase information of signal by the fft algorithm module.The fixed phase drift that obtains the difference of signal phase and square wave phase and deduct circuit in the result obtains net result.Repeatedly duplicate measurements finally obtains phase place average 208.When the absolute value of phase place average surpasses certain threshold value, keep phase information, indication has metal object to exist.If the phase place average less than certain threshold value, then empties demonstration information and remeasures.If there is testee, by built-in fitting formula, the roughly strength information of indication metal object, and the lead-lag by phase information judge that testee belongs to ferrous metal or non iron metal.With this measure phase information with last time measurement result compare, if significantly reducing appears in the phase place absolute value, carry out the center of testee and judge.Software set center judgement symbol, the correlation parameter of the utilization built-in center of phase information Correction and Control device fitting formula at this moment.Next one-shot measurement, the phase information that obtains directly use strength information to show, the center shows.If during certain was measured, the phase place mean absolute value of acquisition withdrawed from measurement less than certain threshold value, and empties the storage data, begins the measurement of another time.
The above embodiment is the preferred embodiment that proves absolutely that invention is lifted, and protection scope of the present invention is not limited thereto.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. multifunctional wall body detection instrument comprises five parts:
First is the water pipe detection circuit, is composed in series with capacitive transducer (300), single-shot trigger circuit (304), average circuit (307) order by water gage glass;
Second portion is the electric wire detection circuit, is composed in series in proper order with covering copper (14), high impedance amplifying circuit (701), impedance inverter circuit (703) by visiting electric wire;
Third part is the metal detection circuit, is composed in series by emission winding (100), parallel resonance circuit (110), differential received coil (9), amplifying circuit (393), filtering circuit (394), biasing circuit (395) order;
The 4th part is auxiliary circuit, is composed in series by infrared transmitter (52), infrared remote receiver (53) order;
The 5th part is control circuit, comprises controller (400);
Described first, second portion, third part, the 4th part are independent respectively to be connected with described the 5th part.
2. multifunctional wall body detection instrument according to claim 1, it is characterized in that: also comprise main body pcb board (1), described water gage glass with capacitive transducer (4), described spy electric wire with cover copper (14), described differential received coil (9) is integrated on the described main body pcb board (1).
3. multifunctional wall body detection instrument according to claim 1 is characterized in that: described controller (400) comprises that water pipe is surveyed control module, circuit is surveyed control module, metal detection control module; Described water pipe detection control module, circuit are surveyed control module, the metal detection control module is integrated in the described controller (400); Surveying control module with described water pipe after described first water pipe detection circuit and described the 4th part auxiliary circuit parallel connection is connected; Described second portion electric wire detection circuit is surveyed control module with described circuit and is connected; Described third part metal detection circuit is connected with described metal detection control module.
4. multifunctional wall body detection instrument according to claim 2, it is characterized in that: described main body pcb board (1) comprises backboard (2) and top board (3) two sides, described first water pipe detection circuit and described second portion electric wire detection circuit are integrated on described backboard (2) face, and described third part metal detection circuit is integrated on described top board (3) face.
5. multifunctional wall body detection instrument according to claim 1, it is characterized in that: described water gage glass comprises first pole plate (4), second pole plate (5), tri-electrode (6) with capacitive transducer (4), described first pole plate (4), second pole plate (5), tri-electrode (6) constitute electric capacity (301) together, described second pole plate (5) is as the main pole of described electric capacity (301), described first pole plate (4) and described second pole plate (6) are cascaded, and constitute the inferior utmost point of described electric capacity (301).
6. multifunctional wall body detection instrument according to claim 1, it is characterized in that: described differential received coil (9) comprises first receiving coil (8), second receiving coil (9), the 3rd receiving coil (10), the 4th receiving coil (11) and alihnment coil (12), described first receiving coil (8), second receiving coil (9), the 3rd receiving coil (10), the 4th receiving coil (11) series connection, described alihnment coil (12) is connected among described the 3rd receiving coil (10) and described the 4th receiving coil (11), described first receiving coil (8), the 3rd receiving coil (10), the 4th receiving coil (11) is positioned on described top board (3) face, and described second receiving coil (9) is positioned on described backboard (2) face.
7. multifunctional wall body detection instrument according to claim 1, it is characterized in that: described spy electric wire comprises first copper-clad plate (13), second copper-clad plate (14), the 3rd copper-clad plate (15) with covering copper (14), and described first copper-clad plate (13), second copper-clad plate (14), the 3rd copper-clad plate (15) horizontal center line align and equidistantly be arranged on described backboard (2) face.
8. multifunctional wall body detection instrument according to claim 1, it is characterized in that: described first water pipe detection circuit comprises that also first reference voltage provides unit (302), second reference voltage provides unit (303), power supply (305), narrow-band impulse produces circuit (306), described narrow-band impulse produces circuit (306) and is connected on described single-shot trigger circuit (304) between described average circuit (307), and described power supply (305) is respectively described first reference voltage unit (302) is provided, second reference voltage provides unit (303), narrow-band impulse produces circuit (306) and average circuit (307) power supply.
9. multifunctional wall body detection instrument according to claim 1, it is characterized in that: described second portion electric wire detection circuit comprises that also bias voltage provides unit (702), and described bias voltage provides unit (702) to be described high impedance amplifying circuit (701), impedance inverter circuit (703) power supply.
10. multifunctional wall body detection instrument according to claim 1, it is characterized in that: described emission winding (100) is from coiling, comprise common enameled wire (101), skeleton (106), described common enameled wire (101) uniform winding is on described skeleton (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078120.9A CN103197352B (en) | 2013-03-12 | 2013-03-12 | Multifunctional wall body detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078120.9A CN103197352B (en) | 2013-03-12 | 2013-03-12 | Multifunctional wall body detecting instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103197352A true CN103197352A (en) | 2013-07-10 |
| CN103197352B CN103197352B (en) | 2015-05-13 |
Family
ID=48720028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310078120.9A Expired - Fee Related CN103197352B (en) | 2013-03-12 | 2013-03-12 | Multifunctional wall body detecting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103197352B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883819A (en) * | 2015-04-29 | 2015-09-02 | 广东威创视讯科技股份有限公司 | PCB silkscreen processing method and system |
| CN105759322A (en) * | 2014-12-18 | 2016-07-13 | 贵州中建建筑科研设计院有限公司 | Method for detecting ring beam or constructional column in masonry structure |
| CN105842742A (en) * | 2016-03-28 | 2016-08-10 | 大同市快安科技有限公司 | Specific metal detecting device and specific metal intelligent identification learning method |
| CN105856188A (en) * | 2016-05-06 | 2016-08-17 | 简燕梅 | Movable detection robot for flexible building structure |
| CN106019384A (en) * | 2016-06-20 | 2016-10-12 | 苏州华徕光电仪器有限公司 | Wall body wire detection circuit |
| CN106990442A (en) * | 2017-05-10 | 2017-07-28 | 上海海事大学 | A kind of portable hand-held detection means of electric current within the walls based on electromagnetic induction |
| CN109358369A (en) * | 2018-12-19 | 2019-02-19 | 冯家森 | A kind of volume body coils formula electromagnetism interference pulse metal detector |
| CN111812722A (en) * | 2020-01-04 | 2020-10-23 | 深圳市度彼电子有限公司 | Wall detector and method for positioning metal target center by using same |
| WO2023000193A1 (en) * | 2021-07-21 | 2023-01-26 | 深圳市杜比激光有限公司 | Wall body metal detector and target positioning method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3546628A (en) * | 1968-06-20 | 1970-12-08 | Robert N Zitter | Oscillating metal object detector |
| DE102009054950A1 (en) * | 2009-12-18 | 2011-06-22 | Hilti Aktiengesellschaft | handheld instrument |
| CN102518310A (en) * | 2011-12-09 | 2012-06-27 | 葛加君 | Construction method of photoelectric curtain wall of glass film |
-
2013
- 2013-03-12 CN CN201310078120.9A patent/CN103197352B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3546628A (en) * | 1968-06-20 | 1970-12-08 | Robert N Zitter | Oscillating metal object detector |
| DE102009054950A1 (en) * | 2009-12-18 | 2011-06-22 | Hilti Aktiengesellschaft | handheld instrument |
| CN102518310A (en) * | 2011-12-09 | 2012-06-27 | 葛加君 | Construction method of photoelectric curtain wall of glass film |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759322A (en) * | 2014-12-18 | 2016-07-13 | 贵州中建建筑科研设计院有限公司 | Method for detecting ring beam or constructional column in masonry structure |
| CN104883819A (en) * | 2015-04-29 | 2015-09-02 | 广东威创视讯科技股份有限公司 | PCB silkscreen processing method and system |
| CN104883819B (en) * | 2015-04-29 | 2018-08-07 | 广东威创视讯科技股份有限公司 | PCB silk-screen processing method and system |
| CN105842742A (en) * | 2016-03-28 | 2016-08-10 | 大同市快安科技有限公司 | Specific metal detecting device and specific metal intelligent identification learning method |
| CN105856188A (en) * | 2016-05-06 | 2016-08-17 | 简燕梅 | Movable detection robot for flexible building structure |
| CN106019384A (en) * | 2016-06-20 | 2016-10-12 | 苏州华徕光电仪器有限公司 | Wall body wire detection circuit |
| CN106990442A (en) * | 2017-05-10 | 2017-07-28 | 上海海事大学 | A kind of portable hand-held detection means of electric current within the walls based on electromagnetic induction |
| CN109358369A (en) * | 2018-12-19 | 2019-02-19 | 冯家森 | A kind of volume body coils formula electromagnetism interference pulse metal detector |
| CN109358369B (en) * | 2018-12-19 | 2024-04-26 | 冯家森 | Three-dimensional coil type anti-electromagnetic interference pulse metal detector |
| CN111812722A (en) * | 2020-01-04 | 2020-10-23 | 深圳市度彼电子有限公司 | Wall detector and method for positioning metal target center by using same |
| WO2021135092A1 (en) * | 2020-01-04 | 2021-07-08 | 深圳市度彼电子有限公司 | Wall detector, and method employing same to centrally position metal target |
| WO2023000193A1 (en) * | 2021-07-21 | 2023-01-26 | 深圳市杜比激光有限公司 | Wall body metal detector and target positioning method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103197352B (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103197352B (en) | Multifunctional wall body detecting instrument | |
| US11791659B2 (en) | Inductive power transmitter | |
| CN107490737B (en) | A kind of load of wireless charging system and mutual inductance estimation method | |
| CN106567708B (en) | One kind is with the lateral resistivity logging system of brill and its signal detecting method | |
| TW201314182A (en) | Charged body sensing system | |
| JP2019522784A (en) | Non-contact type electrical conductivity and non-conductor dielectric constant change measurement device using RF signal | |
| CN104076195A (en) | Non-contact electricity verification device based on vertical field intensity difference distribution curve matching | |
| CN105487123A (en) | Buried service detection | |
| CN201035156Y (en) | Metal detector and its sensor | |
| CN111812722B (en) | Wall detector and method for locating metal target center thereof | |
| CN106403792A (en) | Distance determination based on reflected admittance | |
| CN102879462A (en) | Metal defect eddy current detection device and probe thereof | |
| CN110231071A (en) | A kind of liquid level emasuring device based on capacitance type sensor | |
| CN103123400B (en) | A kind of High-accuracy metal detection sensor device | |
| CN103512592A (en) | Wireless passive LC resonance sensor detecting circuit and corresponding information acquiring method | |
| CN102207487A (en) | Quick metal material characteristic identifier system of | |
| CN117434320B (en) | Resonant frequency adjusting system and method for calibrating resonant circuit of differential transformer | |
| CN114487932A (en) | High-precision parallel measurement method for asymmetric coupling factors of differential transformer | |
| CN101788611A (en) | Resistivity measuring device and method | |
| CN109557168B (en) | Anti-interference high-sensitivity gas-liquid two-phase flow phase content detection method | |
| CN100483458C (en) | Two-way fuel ball counter circuit for sphere high temperature gas-cooling reactor | |
| CN110412401A (en) | A kind of ground connection of AC charging equipment and misphase detection circuit | |
| CN103197153B (en) | A kind of capacitor and inductor parameter measurement circuit based on vector triangle and measuring method thereof | |
| Li et al. | The Effect of Frequency on Double-coil Inductive Displacement Transducer | |
| Tan et al. | Non-contact measurement of water surface level from phase values of inductive measurements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20160312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |