CN105137496A - Metal detecting device for industrial mine - Google Patents
Metal detecting device for industrial mine Download PDFInfo
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- CN105137496A CN105137496A CN201510594419.9A CN201510594419A CN105137496A CN 105137496 A CN105137496 A CN 105137496A CN 201510594419 A CN201510594419 A CN 201510594419A CN 105137496 A CN105137496 A CN 105137496A
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Abstract
The invention discloses a metal detecting device for an industrial mine. The metal detecting device comprises a detection oscillator circuit, a reference oscillator circuit, a mixer circuit, and a signal display circuit, the detection oscillator circuit is formed by a time-base integrated circuit IC1, an inductor L1, a potentiometer RP1, a diode VD1, and capacitors C1 and C2, the reference oscillator circuit is formed by a time-base integrated circuit IC2, an inductor L2, a diode VD2, a resistor R1, and capacitors C3 and C4, the mixer circuit is formed by a transistor V, a diode VD3, and resistors R2-R4, and the signal display circuit is formed by an integrated circuit IC3, a voltmeter PV, and a peripheral capacitance-resistance element. According to the metal detecting device for the industrial mine, the structure and the design are reasonable, the integration degree is high, the detection precision is high, the usage is convenient, the detection frequency can be adjusted, and the device can be applicable to the industrial mines and can be used for detecting various metals.
Description
Technical field
The invention belongs to industrialization Detection Techniques field, be specifically related to a kind of industrial mine metal detecting device.
Background technology
Existing metal detector is made up of oscillator and frequency meter usually, described oscillator is inductance, Capacitance parallel connection resonant oscillator, oscillator is as the sensor of detection metal, it is several that the circuit types of described inductance, Capacitance parallel connection resonant oscillator mainly contains transformer feedback sine-wave oscillator, capacitive feedback sine-wave oscillator etc., described inductance is a coil, when coil is near metallic object, the inductance value of coil can change, thus resonance frequency is offset, according to the change of frequency detectable go out metallic object.The sensitivity of this metal detector to inductance value change response is lower, and interference free performance is poor, is necessary to improve.
Summary of the invention
Goal of the invention: the object of the invention is to solve deficiency of the prior art, there is provided a kind of reasonable in design, integration degree is high, and detection accuracy is high and easy to use, look-in frequency is adjustable, can be applicable to the industrial mine metal detecting device that industrial mine uses for detecting each metalloid.
Technical scheme: the industrial mine metal detecting device of one of the present invention, comprise detecting oscillations device circuit, reference oscillator circuits, mixer and signal display circuit, described detecting oscillations device circuit is by time-base integrated circuit IC1, inductor L1, potentiometer RP1, diode VD1 and capacitor C1, C2 forms, 1 pin of described time-base integrated circuit IC1, 2 pin, 4 pin of 6 pin and described time-base integrated circuit IC1, potentiometer RP1 is provided with between 8 pin, 1 pin of described time-base integrated circuit IC1, 2 pin, inductor L1 is provided with between 7 pin of 6 pin and described time-base integrated circuit IC1, 7 pin of described time-base integrated circuit IC1 and 4 pin of described time-base integrated circuit IC1, diode VD1 is provided with between 8 pin, 5 pin of described time-base integrated circuit IC1 are connected with capacitor C1, 3 pin of described time-base integrated circuit IC1 are connected with capacitor C2, described reference oscillator circuits is by time-base integrated circuit IC2, inductor L2, diode VD2, resistor R1 and capacitor C3, C4 forms, 2 pin of described time-base integrated circuit IC2, 4 pin of 6 pin and described time-base integrated circuit IC2, resistor R1 is provided with between 8 pin, 2 pin of described time-base integrated circuit IC2, inductor L2 is provided with between 7 pin of 6 pin and described time-base integrated circuit IC2, 7 pin of described time-base integrated circuit IC2 and 4 pin of described time-base integrated circuit IC2, diode VD2 is provided with between 8 pin, 5 pin of described time-base integrated circuit IC2 are connected with capacitor C3, 3 pin of described time-base integrated circuit IC2 are connected with capacitor C4, described capacitor C4 is connected with described capacitor C2 simultaneously, described mixer is made up of transistor V, diode VD3 and resistor R2 ~ R4, the base stage of transistor V is connected to resistor R2, resistor R3 and diode VD3, described diode VD3 is connected with described capacitor C4 simultaneously, and the emitter of described transistor V is connected with resistor R4, described signal display circuit is made up of integrated circuit (IC) 3, voltage table PV and peripheral Resistor-Capacitor Unit, 1 pin of described integrated circuit (IC) 3 is connected in parallel to capacitor C5 and resistor R5,3 pin of described integrated circuit (IC) 3 are connected in parallel to resistor R7 and potentiometer RP2 and capacitor C6,2 pin of described integrated circuit (IC) 3 are connected with capacitor C7, and 4 pin and 7 pin of described integrated circuit (IC) 3 are connected with voltage table PV.
Further, described resistor R1 ~ R7 selects 1/4W or 1/8W carbon film resistor.
Further, described potentiometer RP1 selects the synthesis membrane potentiometer of belt switch; Potentiometer RP2 selects synthesis membrane potentiometer or the variohm of not belt switch.
Further, described capacitor C1 ~ C5, C7 all select ceramic capacitor; Capacitor C6 selects withstand voltage to be greater than the aluminium electrolutic capacitor of 10V.
Further, described diode VD1 ~ VD3 selects the germanium switching diode of 2AP9,2APl0 type germanium general-purpose diode or 2AK series.
Further, described transistor V selects 3DG6 or S9018 type silicon NPN transistor.
Further, described time-base integrated circuit IC1 and IC2 all selects NE555 type time-base integrated circuit; Integrated circuit (IC) 3 selects LM2917N type integrated circuit.
Further, the high strength enamelled wire of described inductor L1 Φ 0.49mm is coiled into the coil that diameter is 30cm, 50 ~ 140 circles; Inductor L2 selects TDK inductor with colour codes.
Beneficial effect: the industrial mine metal detecting device of one of the present invention, its reasonable in design, integration degree is high, and detection accuracy is high and easy to use, and look-in frequency is adjustable, can be applicable to industrial mine and use for detecting each metalloid.
Accompanying drawing explanation
Fig. 1 is circuit structure principle schematic of the present invention.
Embodiment
One industry mine metal detecting device as shown in Figure 1, comprises detecting oscillations device circuit, reference oscillator circuits, mixer and signal display circuit.
Described detecting oscillations device circuit is by time-base integrated circuit IC1, inductor L1, potentiometer RP1, diode VD1 and capacitor C1, C2 forms, 1 pin of described time-base integrated circuit IC1, 2 pin, 4 pin of 6 pin and described time-base integrated circuit IC1, potentiometer RP1 is provided with between 8 pin, 1 pin of described time-base integrated circuit IC1, 2 pin, inductor L1 is provided with between 7 pin of 6 pin and described time-base integrated circuit IC1, 7 pin of described time-base integrated circuit IC1 and 4 pin of described time-base integrated circuit IC1, diode VD1 is provided with between 8 pin, 5 pin of described time-base integrated circuit IC1 are connected with capacitor C1, 3 pin of described time-base integrated circuit IC1 are connected with capacitor C2.
Described reference oscillator circuits is by time-base integrated circuit IC2, inductor L2, diode VD2, resistor R1 and capacitor C3, C4 forms, 2 pin of described time-base integrated circuit IC2, 4 pin of 6 pin and described time-base integrated circuit IC2, resistor R1 is provided with between 8 pin, 2 pin of described time-base integrated circuit IC2, inductor L2 is provided with between 7 pin of 6 pin and described time-base integrated circuit IC2, 7 pin of described time-base integrated circuit IC2 and 4 pin of described time-base integrated circuit IC2, diode VD2 is provided with between 8 pin, 5 pin of described time-base integrated circuit IC2 are connected with capacitor C3, 3 pin of described time-base integrated circuit IC2 are connected with capacitor C4, described capacitor C4 is connected with described capacitor C2 simultaneously.
Described mixer is made up of transistor V, diode VD3 and resistor R2 ~ R4, the base stage of transistor V is connected to resistor R2, resistor R3 and diode VD3, described diode VD3 is connected with described capacitor C4 simultaneously, and the emitter of described transistor V is connected with resistor R4.
Described signal display circuit is made up of integrated circuit (IC) 3, voltage table PV and peripheral Resistor-Capacitor Unit, 1 pin of described integrated circuit (IC) 3 is connected in parallel to capacitor C5 and resistor R5,3 pin of described integrated circuit (IC) 3 are connected in parallel to resistor R7 and potentiometer RP2 and capacitor C6,2 pin of described integrated circuit (IC) 3 are connected with capacitor C7, and 4 pin and 7 pin of described integrated circuit (IC) 3 are connected with voltage table PV.
As the further optimization of technique scheme, in this circuit, the selection of each components and parts is as follows:
Further, described resistor R1 ~ R7 selects 1/4W or 1/8W carbon film resistor.
Further, described potentiometer RP1 selects the synthesis membrane potentiometer of belt switch; Potentiometer RP2 selects synthesis membrane potentiometer or the variohm of not belt switch.
Further, described capacitor C1 ~ C5, C7 all select ceramic capacitor; Capacitor C6 selects withstand voltage to be greater than the aluminium electrolutic capacitor of 10V.
Further, described diode VD1 ~ VD3 selects the germanium switching diode of 2AP9,2APl0 type germanium general-purpose diode or 2AK series.
Further, described transistor V selects 3DG6 or S9018 type silicon NPN transistor.
Further, described time-base integrated circuit IC1 and IC2 all selects NE555 type time-base integrated circuit; Integrated circuit (IC) 3 selects LM2917N type integrated circuit.
Further, the high strength enamelled wire of described inductor L1 Φ 0.49mm is coiled into the coil that diameter is 30cm, 50 ~ 140 circles; Inductor L2 selects TDK inductor with colour codes.
The principle of work of this circuit is as follows:
When detector does not detect metal object, in detecting oscillations device circuit, the 3 pin output frequencies of ICl are the oscillator signal of 26kHz, and in reference oscillator circuits, the 3 pin output frequencies of IC2 are the oscillator signal of 25kHz.After two frequency signals are together sent into and carried out Frequency differential amplifying in frequency mixer, produce the difference frequency signal of 1kHz, add people from 1 pin of IC3.This signal, after processing of circuit in IC3, export zero level, therefore the pointer of voltage table PV refers in index dial middle (" 0 " position) from 4 pin and 7 pin.
After detector detects metal object, the frequency of operation of detecting oscillations device will higher or lower than 26kHz, due to the reference frequency of reference oscillator constant (being always 25kHz), the oscillator signal of the 1 pin input of IC3 can be higher or on the low side in 1kHz, 4 pin of IC3,7 pin can export the signal voltage of plus or minus, and the pointer of voltage table PV is deflected.User, according to the yawing moment of voltage table pointer and deflection amplitude size, can judge metal classification, and locates metal.
The adjustment method of this circuit is as follows:
After circuits assembly is good, measure the signal frequency of V emitter with frequency meter, then regulator potentiometer RP1, make signal frequency be 1kHz.If without frequency meter, also the low-frequency amplifier circuit output signal of V emitter can being sent into transistor radio amplifies, then regulator potentiometer RP1, make wireless sound the most ear-piercing (in adjustment process, can find that RP1 has two positions to make sound the most ear-piercing, the position that the effective resistance of RP1 is larger should be selected).Adjust RP2 again, make the pointer of voltage table PV be index dial center (" 0 " position).
In use, also should according to actual conditions (such as temperature, soil moisture etc.), timely adjustment RP1, makes the pointer of voltage table placed in the middle.
The industrial mine metal detecting device of one of the present invention, its reasonable in design, integration degree is high, and detection accuracy is high and easy to use, and look-in frequency is adjustable, can be applicable to industrial mine and use for detecting each metalloid.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. an industrial mine metal detecting device, it is characterized in that: comprise detecting oscillations device circuit, reference oscillator circuits, mixer and signal display circuit, described detecting oscillations device circuit is by time-base integrated circuit IC1, inductor L1, potentiometer RP1, diode VD1 and capacitor C1, C2 forms, 1 pin of described time-base integrated circuit IC1, 2 pin, 4 pin of 6 pin and described time-base integrated circuit IC1, potentiometer RP1 is provided with between 8 pin, 1 pin of described time-base integrated circuit IC1, 2 pin, inductor L1 is provided with between 7 pin of 6 pin and described time-base integrated circuit IC1, 7 pin of described time-base integrated circuit IC1 and 4 pin of described time-base integrated circuit IC1, diode VD1 is provided with between 8 pin, 5 pin of described time-base integrated circuit IC1 are connected with capacitor C1, 3 pin of described time-base integrated circuit IC1 are connected with capacitor C2, described reference oscillator circuits is by time-base integrated circuit IC2, inductor L2, diode VD2, resistor R1 and capacitor C3, C4 forms, 2 pin of described time-base integrated circuit IC2, 4 pin of 6 pin and described time-base integrated circuit IC2, resistor R1 is provided with between 8 pin, 2 pin of described time-base integrated circuit IC2, inductor L2 is provided with between 7 pin of 6 pin and described time-base integrated circuit IC2, 7 pin of described time-base integrated circuit IC2 and 4 pin of described time-base integrated circuit IC2, diode VD2 is provided with between 8 pin, 5 pin of described time-base integrated circuit IC2 are connected with capacitor C3, 3 pin of described time-base integrated circuit IC2 are connected with capacitor C4, described capacitor C4 is connected with described capacitor C2 simultaneously, described mixer is made up of transistor V, diode VD3 and resistor R2 ~ R4, the base stage of transistor V is connected to resistor R2, resistor R3 and diode VD3, described diode VD3 is connected with described capacitor C4 simultaneously, and the emitter of described transistor V is connected with resistor R4, described signal display circuit is made up of integrated circuit (IC) 3, voltage table PV and peripheral Resistor-Capacitor Unit, 1 pin of described integrated circuit (IC) 3 is connected in parallel to capacitor C5 and resistor R5,3 pin of described integrated circuit (IC) 3 are connected in parallel to resistor R7 and potentiometer RP2 and capacitor C6,2 pin of described integrated circuit (IC) 3 are connected with capacitor C7, and 4 pin and 7 pin of described integrated circuit (IC) 3 are connected with voltage table PV.
2. the industrial mine metal detecting device of one according to claim 1, is characterized in that: described resistor R1 ~ R7 selects 1/4W or 1/8W carbon film resistor.
3. the industrial mine metal detecting device of one according to claim 1, is characterized in that: described potentiometer RP1 selects the synthesis membrane potentiometer of belt switch; Potentiometer RP2 selects synthesis membrane potentiometer or the variohm of not belt switch.
4. the industrial mine metal detecting device of one according to claim 1, is characterized in that: described capacitor C1 ~ C5, C7 all select ceramic capacitor; Capacitor C6 selects withstand voltage to be greater than the aluminium electrolutic capacitor of 10V.
5. the industrial mine metal detecting device of one according to claim 1, is characterized in that: described diode VD1 ~ VD3 selects the germanium switching diode of 2AP9,2APl0 type germanium general-purpose diode or 2AK series.
6. the industrial mine metal detecting device of one according to claim 1, is characterized in that: described transistor V selects 3DG6 or S9018 type silicon NPN transistor.
7. the industrial mine metal detecting device of one according to claim 1, is characterized in that: described time-base integrated circuit IC1 and IC2 all selects NE555 type time-base integrated circuit; Integrated circuit (IC) 3 selects LM2917N type integrated circuit.
8. the industrial mine metal detecting device of one according to claim 1, is characterized in that: the high strength enamelled wire of described inductor L1 Φ 0.49mm is coiled into the coil that diameter is 30cm, 50 ~ 140 circles; Inductor L2 selects TDK inductor with colour codes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594419.9A CN105137496A (en) | 2015-09-18 | 2015-09-18 | Metal detecting device for industrial mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594419.9A CN105137496A (en) | 2015-09-18 | 2015-09-18 | Metal detecting device for industrial mine |
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| Publication Number | Publication Date |
|---|---|
| CN105137496A true CN105137496A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510594419.9A Pending CN105137496A (en) | 2015-09-18 | 2015-09-18 | Metal detecting device for industrial mine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531423A (en) * | 2019-09-22 | 2019-12-03 | 萧县华恒静电科技有限公司 | A kind of birds heavy metal analysis device |
| CN110584671A (en) * | 2019-09-22 | 2019-12-20 | 萧县华恒静电科技有限公司 | Metal detection device for pet body |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB774957A (en) * | 1954-07-22 | 1957-05-15 | Asea Ab | Metal detector or bore-hole logger |
| US4023092A (en) * | 1974-04-29 | 1977-05-10 | W. R. Grace & Co. | Apparatus for sensing metal in wells |
| CN2144067Y (en) * | 1992-10-12 | 1993-10-20 | 陈庆海 | Tyre metal locator |
| CN202494785U (en) * | 2012-03-22 | 2012-10-17 | 成都措普科技有限公司 | Metal detector |
| CN103412340A (en) * | 2013-08-29 | 2013-11-27 | 高玉琴 | Metal detector |
-
2015
- 2015-09-18 CN CN201510594419.9A patent/CN105137496A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB774957A (en) * | 1954-07-22 | 1957-05-15 | Asea Ab | Metal detector or bore-hole logger |
| US4023092A (en) * | 1974-04-29 | 1977-05-10 | W. R. Grace & Co. | Apparatus for sensing metal in wells |
| CN2144067Y (en) * | 1992-10-12 | 1993-10-20 | 陈庆海 | Tyre metal locator |
| CN202494785U (en) * | 2012-03-22 | 2012-10-17 | 成都措普科技有限公司 | Metal detector |
| CN103412340A (en) * | 2013-08-29 | 2013-11-27 | 高玉琴 | Metal detector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531423A (en) * | 2019-09-22 | 2019-12-03 | 萧县华恒静电科技有限公司 | A kind of birds heavy metal analysis device |
| CN110584671A (en) * | 2019-09-22 | 2019-12-20 | 萧县华恒静电科技有限公司 | Metal detection device for pet body |
| CN110531423B (en) * | 2019-09-22 | 2021-04-23 | 萧县华恒静电科技有限公司 | Poultry heavy metal detection device |
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Application publication date: 20151209 |
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