CN2603388Y - Two-function gemestone detection identifying instrument - Google Patents
Two-function gemestone detection identifying instrument Download PDFInfo
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- CN2603388Y CN2603388Y CN 03236264 CN03236264U CN2603388Y CN 2603388 Y CN2603388 Y CN 2603388Y CN 03236264 CN03236264 CN 03236264 CN 03236264 U CN03236264 U CN 03236264U CN 2603388 Y CN2603388 Y CN 2603388Y
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Abstract
The utility model relates to a double-function sapphire detecting discrimination instrument, consisting of a sensor, an amplifying circuit, a comparing circuit, a triggering circuit, a display, a boost circuit and a power supply part. The sensor is connected to an operational amplifier of the amplifying circuit through series resistance; the output terminal of the operational amplifier is connected to a thermal conductivity comparator of the comparing circuit; the output of the comparator is connected to the thermal conductivity trigger of the triggering circuit; the output of the trigger is connected to the display and also connected to an electrical conductivity trigger; the output of the electrical conductivity trigger is connected to the boost circuit; the boost circuit is connected to the electrical conductivity comparator of the comparing circuit; the output of the electrical conductivity comparator is connected to the display. The utility model can discriminate and identify artificial diamond, natural diamond, and synthetic diamond just with detecting for once, completely reforms the used method to detect and identify three kinds diamonds with thermal conductivity instrument firstly and then with electrical conductivity instrument; the instrument detects accurately, operates simply, is a non-destructive detecting device.
Description
Technical field
The utility model relates to a kind of detecting instrument of physical field, particularly relates to a kind of two functional jewels and detects identifier.Specifically, the utility model relates to a kind of with thermal conductance instrument and the incorporate jewel detection discriminating of conductivity meter instrument.The tester is as long as use this instrument, one-time detection just can be distinguished, determine imitative diamond, rough diamond, synthesizing diamond, past, differentiate imitative diamond, rough diamond, synthesizing diamond in order to distinguish, common way all must be distinguished with the thermal conductance instrument earlier and imitate diamond and diamond, and determining to distinguish with conductivity meter behind the diamond is rough diamond again, or synthesizing diamond.The also secondary detection differential method that claims as the insider.And the utility model two functional jewels detection identifier can be accomplished to unite two into one, and one-time detection obtains the result at once, and method is simple, and conclusion is accurate.
(annotate: the conductivity meter of above title is meant the synthetic moissanite detector, the patent No.: 01264391.2, hereinafter " conductivity meter " speech of Chu Xianing all can herewith be explained)
Background technology
" diamond " that be used for Jewelry product at jewel circle often has imitative diamond, as zircon CZ, synthetic GGG, spinel, topaz or the like, the synthesizing diamond that just occurs recent years arranged also, as synthetic moissanite (Mo Sangshi), also has the pure natural diamond.They incorporate at different commodity categories with different consumer objects separately with different purposes, all have the right on jewelry market, to have a legal seat, objectively say so justifiable.Because these jewels are from surface observation, its color, gloss, flash of light, transparency are all quite similar, even many physical characteristicss, picture proportion, refractive index, chromatic dispersion hardness etc. are also very approaching, therefore differentiate these jewels in order to distinguish, present existing detection discrimination method is to distinguish imitative diamond and diamond, distinguish rough diamond and synthesizing diamond with conductivity meter again with the thermal conductance instrument earlier, and just so-called secondary detection differential method just can achieve the goal.
This shows that above-mentioned existing jewel detection discrimination method has that step is many, defective such as waste time and energy.
Summary of the invention
Fundamental purpose of the present utility model is, overcome the defective that existing jewel detection authentication technique exists, and provide a kind of two novel functional jewels to detect identifier, technical problem underlying to be solved is to make it easy, reliable, the detecting instrument of imitative diamond, rough diamond, synthesizing diamond just can be distinguished, be differentiated to the enough one-time detection of energy, easy to operate, the result is accurate, no matter naked brill or the jewel that has been embedded on the jewellery all can be known once surveying.
The detection mechanism that the utility model two functional jewels detect identifier is to be based upon on the basis of the intrinsic thermal conductivity of imitative diamond, rough diamond, synthetic moissanite three class jewels, conductivity difference, utilize the different thermal conductivities and the conductivity that exist between them, by sensor, the test analysis of probe and Circuits System shows testing result.The thermal conductivity of three class jewels, conductivity values reference table:
Table one
| The jewel title | Thermal conductivity w/cm.k during 300K | Conductivity Ω m |
| Rough diamond | 7-25 | 10 -18 |
| Synthetic moissanite | 5-22 | 10 -15 |
| Imitative diamond class | 0.2-0.02 |
The notable difference that the circuit of the utility model two functional jewels detection identifier at first utilizes imitative diamond and diamond, synthetic moissanite to exist on thermal conductivity differs tens to hundreds of times as can be known from table one.Contact the thermopair thermocurrent that the heat-conduction effect that produces causes with tested jewel by sensor probe and whether reached the value that circuit is set, be not worth then what reflection of instrument does not have yet, just can determine that tested jewel is to imitate diamond if reach this.If met or exceeded setting value, then circuit can change the comparison of conductivity automatically over to, and the low person of conductivity is a rough diamond, and the green light of display is bright and with the sound that ticks, and the high person of conductivity is a synthetic moissanite, the Lan Dengliang of display, and with the sound that ticks of different tones.
The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions.Detecting identifier according to two functional jewels that the utility model proposes is made up of the part of sensor, amplifying circuit, comparator circuit, trigger circuit, display, booster circuit and power supply.Wherein said sensor is connected with amplifying circuit; Described amplifying circuit is connected with comparator circuit; Described comparator circuit is connected with trigger circuit; Described trigger circuit are connected with display, also are connected with booster circuit; Described booster circuit is connected with described comparator circuit again.
Sensor described in the utility model provides second mate's thermopair of constant temperature thermal source to form by the thermistor of ptc material system, and the thermal source of thermistor heating promptly is their common hot junction; Their cold junction connects to form differential amplifier with the positive and negative input end of amplifier respectively.
The conductor of second mate's thermopair described in the utility model all is to make with two kinds of thermode materials of diameter phi 0.13mm constantan matter by diameter phi 0.8mm is copper; Wherein copper thermode is the shared probe that the double as electricity is led detection of going back; The electrical conductive joint of second mate's thermopair is distributed in the both sides of thermistor.
Differential amplifier described in the utility model is the amplifier that output signal and described comparator threshold level signal compare.
Current-carrying plate described in the utility model, human body, tested jewel, the copper probe of sensor are formed an electric loop that obtains conductance signal.
Display described in the utility model be light emitting diode, hummer, LCD or pointer-type any one.
The utility model two functional jewels detect identifier and compared with prior art have tangible advantage and beneficial effect.The beneficial effects of the utility model are that imitative diamond, rough diamond, synthesizing diamond can be distinguished, be differentiated to one-time detection, have thoroughly reformed in the past and must detect the method for distinguishing three class jewels with conductivity meter again with the thermal conductance instrument earlier; Instrument detecting is accurate, and is simple to operate, is a kind of nondestructive inspection apparatus, no matter naked brill or the jewel on the set jewelry all can be known once surveying.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the circuit block diagram that the utility model two functional jewels detect identifier.
Fig. 2 is the circuit theory diagrams that the utility model two functional jewels detect identifier.
Fig. 3 is the structure and the connection layout of sensor 1.
Fig. 4 is a conductance signal detection method synoptic diagram.
Fig. 5 is U in the comparator circuit
2B organizes connection layout.
Embodiment
See also shown in Figure 1ly, Fig. 1 is the circuit block diagram that the utility model two functional jewels detect identifier.Circuit block diagram of the present utility model comprises sensor 1, amplifying circuit 2, comparator circuit 3, trigger 4, display 5, booster circuit 6 and power unit 7 compositions.
The sensor 1 is made up of thermistor and second mate's thermopair, and this thermistor is of a size of φ 5 * 1mm, makes with ptc material.Thermopair is to make with the enamel-cover constantan wire of diameter phi 0.13mm and diameter phi 0.8mm copper pin.Its hot junction contacts with tested jewel by probe, and cold junction is connected with the positive and negative input end of amplifier by resistance.
Above-mentioned amplifying circuit 2 is a slice amplifier integrated chip U
1, for example the 0P07DP type is connected into and gives comparator circuit after differential amplifier circuit amplifies the faint level platform signal that obtains from sensor.
Above-mentioned comparator circuit 3 is made up of two integrated circuit, for example TLC3704, U
2With LM393, U6.TLC3704 is a slice four comparer integrated chips, and LM393 is a slice two comparer integrated chips.Form 6 groups of level comparison circuit with them, in order to narrate conveniently, U
2Be divided into A, B, four groups of independent comparators of C, D, U
6Be divided into two groups of independent comparators (see figure 2)s of E, F.The A group is used for the thermal conductance level relatively; It is relatively flat that the B group is used for the electricity conduction; Preparation pilot lamp conducting when the C group is used to start shooting; The D group is used for economize on electricity prompting warning conducting, and the E group is used for under-voltage prompting warning conducting; The F group is used for the economize on electricity prompting and resets.
Above-mentioned trigger circuit 4 are made up of two integrated circuit, for example TS3V556IN it be a kind of dual time base chip, connect into two groups of monostable triggers and two groups of multivibrators and use output signal driving display and booster circuit.Described display 5 has adopted the green and blue visible light light emitting diode of two diameter phi 3mm and a DHT-20 type piezoelectric ceramics piezo to be used to show testing result.Described booster circuit is a fet, for example IRF BF-20 and inductance L 1, diode D
2Form direct current amplifier, produce about 500V DC voltage and make conductance ratio than device (U
2The B group) positive and negative input end electric potential signal.
See also shown in Figure 2ly, Fig. 2 is the circuit theory diagrams that the utility model two functional jewels detect identifier.Below in conjunction with these circuit theory diagrams, be described more specifically structure of the present utility model and testing process.
Sensor 1 is made up of thermistor 11 and second mate's thermopair, and this thermistor is used for heated at constant temperature, is the positive temperature coefficient (PTC) sheet resistance of the thick 1mm of diameter phi 5mm that made by ptc material; It is characterized in that: Curie point 40-45 ℃, resistance value is 100 Ω ± 10% in the time of 25 ℃; It is to be two enamel-cover constantan wires and copper probe 12 compositions of 0.13mm with diameter in order to the sweating heat galvanic couple that the two sides also plates silver slurry, and detailed structure is referring to Fig. 3 and Fig. 4.Earlier flake thermistor is welded on the silver-plated copper probe 13 that diameter is φ 0.8mm, then the hot junction of thermopair is welded on respectively on the probe of left and right sides of thermistor.Fig. 4 middle probe 12 is connected with power supply negative terminal by diode D4, and this sensor has two effects, the obtaining of first heat conduction signal; It two is by probe 12, jewel 14, and human body 17 is held the conductance signal that electric loop that the right hand end 16 of the left hand end 15 of jewel and contact current-carrying plate 18 forms obtains tested jewel.
At first the discriminating principle of diamond and diamond is imitated in explanation.From above-mentioned table one as can be known the thermal conductivity of diamond and synthetic moissanite (or claiming synthesizing diamond) be tens times even hundreds of times of imitative diamond, so design has determined that some numerical value is as the threshold value of distinguishing them in testing circuit, as Fig. 2, the comparer U in the comparator circuit
29 pin on level value promptly be this threshold value, above earth potential is 1.95V, sensor probe contacts with tested jewel during detection.By U
2One group of thermal conductance comparer forming of 8 pin, 9 pin, 14 pin be the A group.By U
2One group of comparer forming of 10 pin, 11 pin, 13 pin be called the B group.If its jewel probe hot-side temperature that to be thermal conductivity very low is constant or change very little.The thermocurrent that thermopair produces is very little, delivers to differential amplifier U by resistance R 21, R22
12 pin and 3 pin.Though through U
1Amplify, be input to comparer U
2A8 pin of group, but its level value is still less than preset threshold, comparer U
214 pin no signals output, the state of equipment circuit is constant, photoacoustic signal does not all have demonstration; Pointing out tested jewel is imitative diamond.
If the very high jewel of thermal conductivity then the probe hot junction temperature rapidly conduction give jewel, thermopair just produces bigger thermocurrent, wherein level signal is delivered to amplifier U by resistance R 21, R22
12 pin, the signal of 3 pin after differential amplification, by U
1,6Pin output is delivered to comparer U by R25
2AInverting input 8 pin of group, its level signal is greater than the threshold level of 9 pin; U
214 pin can output low level signal; This signal triggering thermal conductance trigger U
38 pin, make it become temporarily steady state; U
39 pin output high level signal by R16 driving display LED3, for example φ 3 green LEDs are lighted green light; Also high level signal is added to U by R17 simultaneously
34 pin (reset terminal), make this multivibrator devote oneself to work U
35 pin output high level drive hummer and send certain frequency sound.This example is selected the HDT-20 piezoelectric buzzer for use, thus light, sound be occur synchronously with the prompting testing result.Above-mentioned in addition high level signal also is added to another group level trigger U
44 pin, this example is also selected TS3V556IN; Make this multivibrator also devote oneself to work U
45 pin output high level connect the Q of booster circuit by R31
2Grid; This Q
2Be IRF BF-20 field effect transistor; Adopt independent current source positive bias circuit.Pass through diode D in former extreme output 500V left and right sides DC voltage
2, for example FR107 and resistance R 46-R43, R48-R54 are connected to comparator circuit U
2B group 10 pin, 11 pin wherein the preset threshold level of 10 pin generally make it current potential than the low 3-4mv of 11 pin current potentials; If tested jewel conductivity height, U so
211 pin current potential step-downs, if U when being lower than the threshold level value of 10 pin
213 pin output pulse signals triggered level trigger U
48 pin, make it become temporarily steady state; U
49 pin output high level by R26 driving display LED4, this example lights blue lamp for φ 3 blue LEDs, pointing out tested jewel is synthesizing diamond.Said process does not take place if the conductivity of tested jewel is low, and blue lamp does not work, and green light continues to light, and pointing out tested jewel is rough diamond.
So far, instrument has been finished whole testing process, in order more to clearly demonstrate problem, again with the diagram method to represent:
Circuit design of the present utility model has guaranteed that transferring electricity to by the thermal conductance detection leads detection prerequisite condition of institute and prerequisite.Detection was finished in moment, and accuracy and efficient all are satisfactory and convince.
The course of work of several groups of prompting warning comparator circuits once is described at last:
By U
62 pin, 3 pin, 1 pin, see Fig. 2 E group.Be used for the under-voltage indication.When supply voltage is crossed when low U
63 pin current potentials be lower than 2 pin current potentials, 1 pin output low level, preparation pilot lamp flicker or do not work.
By U
65 pin, 6 pin, 7 pin see that Fig. 2 F group is used for economize on electricity prompting ann reset, every detection once, 7 pin potential change have once been eliminated U
2D organizes the rising of 7 pin current potentials.
By U
27 pin, 6 pin, 1 pin group see that Fig. 2 D group is used for the economize on electricity prompting and reports to the police, 7 pin current potentials raise after the operator surpasses about 1 minute idle hours, instrument sends off signal automatically, prompting operation person should turn off total power switch.
By U
25 pin, 4 pin, 2 pin groups see Fig. 2 C group, be used for the conducting of start operation preparation pilot lamp, when 5 pin current potentials were elevated to greater than 4 pin current potentials, 2 pin output high level, preparation pilot lamp LED2 lighted.The expression instrument has entered normal operating conditions.
Because this part circuit is fairly simple, repeats no more.
Top the utility model designer has described model, specification of detection mechanism of the present utility model, circuit theory and the course of work, sensor construction, feature, used important electronic devices and components etc. in detail, it is easy, reliable that the utility model two functional jewels detect identifier, is the detecting instrument that imitative diamond, rough diamond, synthesizing diamond just can be distinguished, be differentiated to the enough one-time detection of energy.
Claims (6)
1, a kind of two functional jewels detect identifier, and the power unit that includes sensor, amplifying circuit, comparator circuit, trigger circuit, display, booster circuit and power to each circuit part is characterized in that:
Described sensor is connected with described amplifying circuit;
Described amplifying circuit is connected with described comparator circuit;
Described comparator circuit is connected with described trigger circuit;
Described trigger circuit are connected also with described display and are connected with booster circuit;
Described booster circuit is connected with described comparator circuit again.
2, two functional jewels according to claim 1 detect identifier, it is characterized in that wherein said sensor provides second mate's thermopair of constant temperature thermal source to form by the thermistor of ptc material system, and the thermal source of thermistor heating promptly is their common hot junction; Their cold junction connects to form differential amplifier with the positive and negative input end of amplifier respectively.
3, two functional jewels according to claim 2 detect identifier, and the conductor that it is characterized in that wherein said second mate's thermopair all is to make with two kinds of thermode materials of diameter ф 0.13mm constantan matter by diameter ф 0.8mm is copper; Wherein copper thermode is the shared probe that the double as electricity is led detection of going back; The electrical conductive joint of second mate's thermopair is distributed in the both sides of thermistor.
4, two functional jewels according to claim 2 detect identifier, it is characterized in that wherein said differential amplifier is the amplifier that output signal and described comparator threshold level signal compare.
5, two functional jewels according to claim 1 detect identifier, it is characterized in that wherein said current-carrying plate, human body, tested jewel, the copper probe composition of the sensor one electric loop that obtains conductance signal.
6, detect identifier according to described two functional jewels of arbitrary claim in the claim 1 to 5, it is characterized in that wherein said display be light emitting diode, hummer, LCD or pointer-type any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03236264 CN2603388Y (en) | 2003-01-21 | 2003-01-21 | Two-function gemestone detection identifying instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03236264 CN2603388Y (en) | 2003-01-21 | 2003-01-21 | Two-function gemestone detection identifying instrument |
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|---|---|
| CN2603388Y true CN2603388Y (en) | 2004-02-11 |
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ID=34166684
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03236264 Expired - Lifetime CN2603388Y (en) | 2003-01-21 | 2003-01-21 | Two-function gemestone detection identifying instrument |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104685362A (en) * | 2012-09-17 | 2015-06-03 | 普里斯蒂姆仪器私人有限公司 | An analysis tool member |
| CN108195802A (en) * | 2017-11-21 | 2018-06-22 | 广州标旗电子科技有限公司 | A kind of novel diamond luminescence imaging detection method |
| US20190120812A1 (en) * | 2011-02-16 | 2019-04-25 | Shenzhen DiKai Industrial Co., Ltd. | Multi-Functional Precious Stone Testing Apparatus and Method Thereof |
| CN109900748A (en) * | 2019-04-24 | 2019-06-18 | 李丽萍 | A kind of recognition methods of the security protection stability maintenance object based on resistance measurement and device |
| CN110470698A (en) * | 2019-09-02 | 2019-11-19 | 武汉研益珠宝科技有限公司 | A kind of emerald identification method and device |
| CN112034000A (en) * | 2020-09-02 | 2020-12-04 | 温州市科丰仪器仪表有限公司 | Gem identification device and method based on thermal conductivity and surface resistivity |
-
2003
- 2003-01-21 CN CN 03236264 patent/CN2603388Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190120812A1 (en) * | 2011-02-16 | 2019-04-25 | Shenzhen DiKai Industrial Co., Ltd. | Multi-Functional Precious Stone Testing Apparatus and Method Thereof |
| US10539510B2 (en) * | 2011-02-16 | 2020-01-21 | Shenzhen Dikai Industial Co., Ltd. | Multi-functional precious stone testing apparatus and method thereof |
| CN104685362A (en) * | 2012-09-17 | 2015-06-03 | 普里斯蒂姆仪器私人有限公司 | An analysis tool member |
| CN104685362B (en) * | 2012-09-17 | 2017-10-13 | 普里斯蒂姆仪器私人有限公司 | analysis tool component |
| CN108195802A (en) * | 2017-11-21 | 2018-06-22 | 广州标旗电子科技有限公司 | A kind of novel diamond luminescence imaging detection method |
| CN108195802B (en) * | 2017-11-21 | 2020-09-15 | 广州标旗电子科技有限公司 | Diamond luminescence imaging detection method |
| CN109900748A (en) * | 2019-04-24 | 2019-06-18 | 李丽萍 | A kind of recognition methods of the security protection stability maintenance object based on resistance measurement and device |
| CN109900748B (en) * | 2019-04-24 | 2021-06-08 | 武汉市新宜电器设备制造有限公司 | Method and device for identifying security and protection stability maintaining object based on resistance measurement |
| CN110470698A (en) * | 2019-09-02 | 2019-11-19 | 武汉研益珠宝科技有限公司 | A kind of emerald identification method and device |
| CN112034000A (en) * | 2020-09-02 | 2020-12-04 | 温州市科丰仪器仪表有限公司 | Gem identification device and method based on thermal conductivity and surface resistivity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130121 Granted publication date: 20040211 |