CN206892255U - Measure the bipolar system electric probe and test circuit of metal surface micro-injection material - Google Patents
Measure the bipolar system electric probe and test circuit of metal surface micro-injection material Download PDFInfo
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- CN206892255U CN206892255U CN201720615795.6U CN201720615795U CN206892255U CN 206892255 U CN206892255 U CN 206892255U CN 201720615795 U CN201720615795 U CN 201720615795U CN 206892255 U CN206892255 U CN 206892255U
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Abstract
The utility model discloses a kind of bipolar system electric probe and test circuit for measuring metal surface micro-injection material, including base shaft, discharge electrode and earth polar, base shaft is fabricated by insulating materials, discharge electrode and earth polar are fabricated by conductive material, the first connecting groove and the second connecting groove are provided with base shaft along on its length direction, discharge electrode is integrally embedded in the first connecting groove, earth polar is integrally embedded in the second connecting groove, discharge electrode has test side A and connection end A, ground has test side B and connection end B, base shaft is test side C close to discharge electrode test side A one end end, other end end of the base shaft away from discharge electrode test side A is connection end C, the connection end A of discharge electrode is electrically connected with the first connecting cable.Circuit of the present utility model has long-time discharge capability, possesses and gos deep into micro-injection material layer and the micro-injection material interface of responded metal sample or/and the power of test of closely knit material interface.
Description
Technical field
It the utility model is related to photoelectricity transient test circuit field, more particularly to a kind of measurement metal surface micro-injection material
Bipolar system electric probe and test circuit.
Background technology
At present, pulse signal electric probe test circuit is to test the process moved with the time on metal sample surface, research punching
Hit dynamics and verify the important means of Numerical Simulation Program.When detonation wave arrival metal surface is concurrent under explosion loading
Raw reflection, phenomena such as causing metal surface generation surge, crush, melt, there is lamination in material, and Fig. 1 is metal
Sample surfaces two states schematic diagram, wherein Fig. 1 lefts are the first metal sample surface state schematic diagram, the first metal-like
Product surface state schematic diagram is micro- spray, matrix double-layer structure schematic diagram, and the first metal sample surface state includes the He of matrix 20
Wei Pen areas 50, the interface between matrix 20 and Wei Pen areas 50 are closely knit material interface 30, and the edge of Wei Pen areas 50 is micro-injection material
Interface 10；Fig. 1 rights are second of metal sample surface state schematic diagram, and second of metal sample surface state schematic diagram is micro-
Spray, microbedding are split, matrix three-decker schematic diagram, and second metal sample surface state includes matrix 20, microbedding split plot 40 and micro-
Area 50 is sprayed, the interface between Wei Pen areas 50 and Wei Pen areas 50 is closely knit material interface 30, and the edge of Wei Pen areas 50 is micro-injection material
Interface 10.Pulse signal electric probe is a kind of instrumentation for measuring closely knit material interface and micro-injection material interface, due to micro-
Injecting substances particle is very sparse, minimum reachable 5 μm of mid-scale levels, and the use of existing pulse signal electric probe test circuit
It is monopole probes, monopole probes are difficult to test in detonation physics experiment and arrive micro-injection material grainses, are also just difficult to test to micro-
Injecting substances interface 10.In test is applied, micro-injection material impinges upon electric probe end face, when certain density micro-injection material is hit
Hitting electric probe end face can promote the two poles of the earth to connect, and test signal is formed so as to cause electric probe waveshaping circuit to be discharged.
Utility model content
Part in view of the shortcomings of the prior art, it is micro- that the purpose of this utility model is to provide a kind of measurement metal surface
The bipolar system electric probe and test circuit of injecting substances, possesses the micro-injection thing for going deep into micro-injection material layer and responded metal sample
Matter interface or/and the power of test of closely knit material interface.
The purpose of this utility model is achieved through the following technical solutions：
A kind of bipolar system electric probe for measuring metal surface micro-injection material, including base shaft, discharge electrode and earth polar, the base
Bar is fabricated by insulating materials, is respectively equipped with discharge electrode, earth polar (the utility model in the base shaft along on its length direction
Along plating on its length direction provided with discharge electrode, earth polar preferably in base shaft), the discharge electrode and earth polar are by conduction material
Material is fabricated, and the discharge electrode is mutually not in contact with each other with earth polar；The discharge electrode has test side A and connection end A, the earth polar
With test side B and connection end B, the base shaft is test side C close to discharge electrode test side A one end end, and the base shaft is remote
Other end end from discharge electrode test side A is connection end C, and the connection end A of the discharge electrode is electrically connected with the first connecting cable,
The connection end B in the earth polar is electrically connected with the second connecting cable, the test side A of the discharge electrode, the test side B in earth polar, base shaft
The corresponding setting of test side C three.
In order to which the utility model is better achieved, the utility model includes base shaft, discharge electrode and earth polar, and the base shaft is by exhausted
Edge material manufacture is formed, and the discharge electrode and earth polar are fabricated by conductive material, along its length direction in the base shaft
On be provided with the first connecting groove and the second connecting groove, first connecting groove is parallel to each other with the second connecting groove, described
Discharge electrode is integrally embedded in the first connecting groove, and the earth polar is integrally embedded in the second connecting groove, and the electric discharge is great
Have test side A and connection end A, have test side B and connection end B describedly, the base shaft close to discharge electrode test side A one
End end is test side C, and other end end of the base shaft away from discharge electrode test side A is connection end C, the company of the discharge electrode
Meet end A and be electrically connected with the first connecting cable, the connection end B in the earth polar is electrically connected with the second connecting cable, the discharge electrode
Test side A, the test side B in earth polar, the base shaft corresponding setting of test side C three.
Preferably, the test side C three end face of the test side A of the discharge electrode, the test side B in earth polar, base shaft is concordant,
Spacing between the test side A of the discharge electrode and the test side B in earth polar is d, and its spacing d is 0.4mm.
The utility model bipolar system electric probe also includes surface insulation protective layer, and the surface insulation protective layer is fully wrapped around
Base shaft, discharge electrode, earth polar, the base shaft are fabricated by insulating ceramic materials.
The preferable technical scheme of the utility model bipolar system electric probe is：The electric discharge is extremely set using electroplating technology plating
Plating gold in the first connecting groove, the plating being extremely located at describedly using electroplating technology plating in the second connecting groove
Gold.
A kind of test circuit being made up of bipolar system electric probe, including bipolar system electric probe and waveshaping circuit, institute
State the first connecting cable of bipolar system electric probe, the second connecting cable electrically connects with waveshaping circuit respectively, second company
Connect cable and also pass through wired earth；The waveshaping circuit includes voltage source E, first resistor RE, second resistance Rp, first electricity
Hold C1, the second electric capacity C2, 3rd resistor Rs, the first resistor REOne end be connected with voltage source E, the second resistance RpOne
End is connected with the first connecting cable respectively, the second resistance RpThe other end, the first electric capacity C1One end, the second electric capacity C2's
One end and first resistor REThe other end connection, the first electric capacity C1The other end, the second electric capacity C2The other end and the 3rd electricity
Hinder RsOne end connection, the 3rd resistor RsThe other end ground connection, the 3rd resistor RsThe other end be also connected electricity with second
Cable electrically connects.
The preferable technical scheme of this test circuit is：The first electric capacity C1Capacitance be more than the second electric capacity C2Electric capacity
Value.
The first electric capacity C1Capacitance C calculated according to the following formula：
In above formula, TConstant pressureFor default first electric capacity C1Constant voltage time, RRPFor second resistance RpResistance, RRSFor the 3rd
Resistance RsResistance, RRXFor measured matter RXResistance, Δ VC1/VC1 beginsFor the first electric capacity C in constant voltage time1Voltage change
Requirements, wherein Δ VC1For the first electric capacity C in constant voltage time1The changing value of voltage, VC1 beginsFor the first electric capacity C in constant voltage time1Electricity
The initial value of pressure.TConstant pressureTo meet the constant voltage time under Explosion measurement time conditions needed for default first electric capacity, can be set
2 μ s are set to, as a kind of preferable scheme, in formula, the resistance of second resistance and the resistance of 3rd resistor take 50 Ω, in addition, this
In utility model, the selection of the capacitance of the second electric capacity is identical with traditional pulse signal electrical probe circuit obtaining value method, according to warp
Value is tested, the capacitance of the second electric capacity is typically taken as 510pF.It can be seen from the principle of step signal, above-mentioned step signal electrical resistivity survey
Pin test circuit has long-time discharge capability, while can ensure that the discharge voltage of electric probe is constant within the testing time, separately
Outside, sized capacitors design in parallel is it is also ensured that circuit has good high frequency characteristics.
The preferable technical scheme of this test circuit is：The first electric capacity C in constant voltage time1Voltage change requirements be less than
Equal to 1%.
The preferable technical scheme of this test circuit is：The second resistance RpResistance and 3rd resistor RsResistance be
50Ω。
The utility model compared with the prior art, has advantages below and beneficial effect：
(1) circuit of the present utility model has long-time discharge capability, possesses and gos deep into micro-injection material layer and responded metal
The micro-injection material interface of sample or/and the power of test of closely knit material interface.
(2) traditional acyclic type electric probe is merely capable of entering the closely knit material interface on metal sample surface under explosion loading
Row identification, it cannot respond to the micro-injection material interface in Wei Pen areas；The sensitivity of the utility model bipolar system electric probe is higher,
Micro-injection material at micro-injection material interface, which strikes bipolar system electric probe end face, can cause bipolar system electric probe to shift to an earlier date
Electric discharge, now can reads out micro-injection material interface；Then when bipolar system electric probe end face is close to closely knit material interface,
Material density raises suddenly, and now bipolar system electric probe also discharges mutation to higher, therefore can also read closely knit material interface, so
The width in micro-injection material area can be drawn according to closely knit material interface and micro-injection material interface afterwards.
(3) base shaft of the present utility model, discharge electrode and earth polar three are parallel to each other and are combined into cylindrical shape
Electric probe is overall, and base shaft plays insulating effect between discharge electrode and earth polar, when micro-injection material is covered in bipolar system electrical resistivity survey
Pin detects end to connect discharge electrode and earth polar, so results in electric probe waveshaping circuit and discharges to form test signal, carries
High detection sensitivity；And the test side C three end face of the test side A of discharge electrode, the test side B in earth polar, base shaft is concordant, makes
Micro-injection material can be accurately responsive in detection end points opening position by obtaining bipolar system electric probe, micro- in order to be precisely determined
Injecting substances interface and closely knit material interface.
(4) the utility model discharge voltage of electric probe within the testing time is constant, so as to from electric probe discharge voltage
The resistance variations of the amplitude change observation measured matter of signal, there is the ability of identification micro-injection material and closely knit material.This reality
With new to micro-injection substance responds sensitivity, the material spent after electric probe end face accumulation micro-injection material is less than 5 μm, as one
Layer micro-injection material, the resistance value of measured matter is the 1 Ω orders of magnitude, and electric probe will appear from obvious electric discharge phenomena.
Brief description of the drawings
Fig. 1 is the metal sample surface two states schematic diagram under explosion loading；
Fig. 2 is the structural representation of the utility model bipolar system electric probe；
Fig. 3 is the structural representation of base shaft in Fig. 2；
Fig. 4 is the circuit theory diagrams of waveshaping circuit of the present utility model；
Fig. 5 is the test waveform compares figure of bipolar system electric probe test circuit and acyclic type electric probe test circuit.
Wherein, it is entitled corresponding to the reference in accompanying drawing：
1- base shafts, 2- discharge electrodes, 3- earth polars, the connecting grooves of 4- first, the connecting grooves of 5- first, 6- signals are formed
Circuit, 10 micro-injection material interfaces, 20- matrixes, the closely knit material interfaces of 30-, 40- microbeddings split plot, 50- Wei Pen areas.
Embodiment
The utility model is described in further detail with reference to embodiment：
Embodiment
As shown in Figure 2-5, a kind of bipolar system electric probe for measuring metal surface micro-injection material, including base shaft 1, electric discharge
Pole 2 and earth polar 3, base shaft 1 are fabricated by insulating materials, and discharge electrode 2 and earth polar 3 are fabricated by conductive material, in base shaft 1
The first connecting groove 4 and the second connecting groove 5, the first connecting groove 4 and the second connecting groove 5 are provided with along on its length direction
It is parallel to each other, discharge electrode 2 is overall to be embedded in the first connecting groove 4, and earth polar 3 is overall to be embedded in the second connecting groove 5, is discharged
Pole 2 has a test side A and connection end A, and earth polar 3 has a test side B and connection end B, base shaft 1 close to the test side A of discharge electrode 2 one
End end is test side C, and other end end of the base shaft 1 away from the test side A of discharge electrode 2 is connection end C, the connection end A of discharge electrode 2
The first connecting cable is electrically connected with, the connection end B in earth polar 3 is electrically connected with the second connecting cable, the test side A of discharge electrode 2, earth polar
3 test side B, the corresponding setting of test side C three of base shaft 1.
According to a preferred embodiment of the present utility model, the test side A of discharge electrode 2, the test side B in earth polar 3, base shaft 1
Test side C three end face it is concordant, the spacing between the test side A of discharge electrode 2 and the test side B in earth polar 3 is d, and its spacing d is
0.4mm.The test side A of discharge electrode 2, the test side B in earth polar 3 are the test end face of bipolar system electric probe, and bipolar system electric probe is used
In response micro-injection material, the two poles of the earth can be promoted to connect when certain density micro-injection material hits electric probe end face, so as to cause electricity
Probe signals form circuit discharging and form test signal.The other end of bipolar system electric probe is then used to weld phase with test cable
Even, test cable is connected with waveshaping circuit.
This bipolar system electric probe also includes surface insulation protective layer, the fully wrapped around base shaft 1 of surface insulation protective layer, discharge electrode
2nd, earth polar 3, base shaft 1 are fabricated by insulating ceramic materials.Base shaft 1 of the present utility model, discharge electrode 2, earth polar 3 are formed double
Pole formula electric probe is in integrally cylindrical shape, and the diameter of bipolar system electric probe is small, and diameter is smaller than 1mm, is applicable to special knot
The metal sample of structure, narrow space, it can also be used to test the big application scenario of micro-injection material interface profile variations.This practicality is new
The bipolar system electric probe of type has sxemiquantitative respond to micro-injection material density size.Bipolar system electrical resistivity survey of the present utility model
The length of pin may be designed as 1.5cm to 3cm.
According to a preferred embodiment of the present utility model, discharge electrode 2 is located at the first connection using electroplating technology plating
Plating gold in groove 4, earth polar 3 are the plating gold being located at using electroplating technology plating in the second connecting groove 5.
A kind of test circuit being made up of bipolar system electric probe, including bipolar system electric probe and waveshaping circuit 6, it is double
The first connecting cable, the second connecting cable of pole formula electric probe electrically connect with waveshaping circuit 6 respectively, and the second connecting cable is also
Pass through wired earth；Waveshaping circuit 6 includes voltage source E, first resistor RE, second resistance Rp, the first electric capacity C1, second electricity
Hold C2, 3rd resistor Rs, first resistor REOne end be connected with voltage source E, second resistance RpOne end be connected electricity with first respectively
Cable connects, second resistance RpThe other end, the first electric capacity C1One end, the second electric capacity C2One end and first resistor REIt is another
End connection, the first electric capacity C1The other end, the second electric capacity C2The other end and 3rd resistor RsOne end connection, 3rd resistor Rs
The other end ground connection, 3rd resistor RsThe other end also electrically connected with the second connecting cable.
According to a preferred embodiment of the present utility model, the first electric capacity C1Capacitance be more than the second electric capacity C2Electric capacity
Value.
According to a preferred embodiment of the present utility model, the first electric capacity C1Capacitance C calculated according to the following formula：
In above formula, TConstant pressureFor default first electric capacity C1Constant voltage time, RRPFor second resistance RpResistance, RRSFor the 3rd
Resistance RsResistance, RRXFor measured matter RXResistance, Δ VC1/VC1 beginsFor the first electric capacity C in constant voltage time1Voltage change
Requirements, wherein Δ VC1For the first electric capacity C in constant voltage time1The changing value of voltage, VC1 beginsFor the first electric capacity C in constant voltage time1Electricity
The initial value of pressure.TConstant pressureTo meet the constant voltage time under Explosion measurement time conditions needed for default first electric capacity, can be set
2 μ s are set to, as a kind of preferable scheme, in formula, the resistance of second resistance and the resistance of 3rd resistor take 50 Ω, in addition, this
In utility model, the selection of the capacitance of the second electric capacity is identical with traditional pulse signal electrical probe circuit obtaining value method, according to warp
Value is tested, the capacitance of the second electric capacity is typically taken as 510pF.It can be seen from the principle of step signal, above-mentioned step signal electrical resistivity survey
Pin test circuit has long-time discharge capability, while can ensure that the discharge voltage of electric probe is constant within the testing time, separately
Outside, sized capacitors design in parallel is it is also ensured that circuit has good high frequency characteristics.
According to a preferred embodiment of the present utility model, the first electric capacity C in constant voltage time1Voltage change requirements
Less than or equal to 1%.
According to a preferred embodiment of the present utility model, second resistance RpResistance and 3rd resistor RsResistance be
50Ω。
Operation principle of the present utility model is as follows：
The present embodiment is carrying out Detonation Experiments, makes lead metal sample that micro-injection phenomenon, specifically, lead metal sample table occur
Surface roughness is 0.8 μm, and lead metal sample size is Φ 25mm × 4mm, high explosive model JOB-9003, size Φ
25mm × 30mm is, it is necessary to which the coaxial configuration bipolar system electric probe and traditional monopole formula electric probe of contrast have same interfacial level
With same distance center radius.Fig. 4 is the bipolar system electric probe test that the utility model measures metal surface micro-injection material
The schematic diagram of circuit, wherein RXFor bipolar system electric probe, the waveshaping circuit 6 includes voltage source E, first resistor RE, second electricity
Hinder Rp, the first electric capacity C1, the second electric capacity C2, 3rd resistor Rs, the first resistor REOne end be connected with voltage source E, described
Two resistance RpOne end be connected respectively with the first connecting cable 4, the second resistance RpThe other end, the first electric capacity C1One end,
Second electric capacity C2One end and first resistor REThe other end connection, the first electric capacity C1The other end, the second electric capacity C2It is another
One end and 3rd resistor RsOne end connection, the 3rd resistor RsThe other end ground connection, the 3rd resistor RsThe other end also
Electrically connected with the second connecting cable 5.First electric capacity C1Capacitance C calculation formula be：
Resistance R in formulapResistance RRPWith resistance RsResistance RRSTake 50 Ω, TConstant pressureFor electric capacity C1Constant voltage time, be taken as 2 μ
S, RRXFor lead metal sample RXResistance, Δ VC1/VC1 beginsFor the electric capacity C in constant voltage time1Voltage change requirements, wherein Δ
VC1For electric capacity C in constant voltage time1The changing value of voltage, VC1 beginsFor electric capacity C in constant voltage time1The initial value of voltage.In addition, this reality
With in new embodiment, the capacitance C of the second electric capacity2It is taken as 510pF.
In micro-injection Detonation Experiments, two class electric probe signals are by the function influence of micro-injection material.Typical arteries and veins
Rushing signal electric probe and step signal electric probe contrast test waveform has following three types：(1) multiple discharge waveform：Step signal electricity
Discharging twice occurs in probe, and complete step signal occurs in second of electric discharge, represents the arrival of the closely knit material interface of metal sample,
Arrival time is 23.90 μ s, and pulsatile once signal occurs in pulse signal electric probe, is reached in the closely knit material interface of metal sample
Afterwards, pulse signal electrical resistivity survey needle-discharging finishes and can not produce pulse signal again substantially, can then be missed using pulse signal electric probe
Sentence the closely knit material interface arrival time of metal sample；(2) electric signal ladder rises：The voltage of step signal electric probe signal is in
Existing ladder rises, and finally reaches maximum level, characterizes the arrival of the closely knit material interface of metal sample, arrival time is 26.32 μ
S, and then there is multiple discharge phenomenon in pulse signal electric probe, can not effectively identify the arrival of the closely knit material interface of metal sample；
(3) high speed micro-injection material turns on：There is multiple discharge phenomenon, step in step signal electric probe and pulse signal electric probe
Finally there is being clearly distinguishable from leading portion and sparked the step signal of pulse signal in signal electric probe, and it is closely knit to characterize metal sample
The arrival of material interface, arrival time are 18.90 μ s, and repeatedly similar pulse signal occurs in pulse signal electric probe, can not
Identify the arrival of the closely knit material interface of metal sample.And there is " abnormal " discharge waveform in most pulse signal electric probes,
It is difficult to the arrival of the closely knit material interface of metal sample.And the step electrical resistivity survey of the utility model bipolar system electric probe test circuit
There is high level step signal feature in pin signal, influence part and closely knit material interface of the recognizable micro- spray material to signal are arrived
Reach.
As can be seen from the above embodiments, the utility model embodiment circuit has long-time discharge capability, possesses deeply
Micro-injection material layer and the micro-injection material interface of responded metal sample and the power of test of closely knit material interface；In addition, surveying
It is constant to try the discharge voltage of electric probe in the time, so as to the measured matter from the change of the amplitude of electric probe discharge voltage signal
Resistance variations, have identification micro-injection material and closely knit material ability；Finally, discharge loop has good high frequency special
Property, High Speed Flyer knockout process under explosion loading can be timely responded to.
When measuring metal surface micro-injection material by test circuit as shown in Figure 2, over time by
The bipolar system electric probe in test circuit is gradually measured into metal surface micro-injection material close to metal surface, signal forms electricity
Waveform result obtained by road 6 is as shown in Figure 5.As shown in figure 5, the utility model is by bipolar system electric probe and by bipolar system
A1 wavy curves in waveform result such as Fig. 5 that the test circuit that electric probe is formed tests out, pass through traditional monopole formula electrical resistivity survey
A2 wavy curves in waveform result such as Fig. 5 that pin and traditional monopole formula test circuit test out；Can be with from A2 wavy curves
Find out：Traditional monopole formula electric probe and traditional monopole formula electric probe test circuit can only feed back the T2 moment, and it is used only for
The closely knit material interface 30 (the electric probe detection faces i.e. corresponding to the T2 moment) on metal sample surface under explosion loading is known
Not, it cannot respond to the interface of the micro-injection material in Wei Pen areas 50 (i.e. micro-injection material interface 10).From A1 wavy curves
Find out, bipolar system electric probe and the test circuit being made up of bipolar system electric probe will shift to an earlier date puts in acyclic type electric probe
Electric signal, at the T1 moment with regard to that discharge signal can occur, by analysis, the micro-injection material that the T1 moment should be Wei Pen areas 50 strikes
Bipolar system electric probe end face causes bipolar system electric probe discharging in advance, you can to feed back or be responsive to micro-injection material interface 10.
Because the micro-injection material in Wei Pen areas 50 is more sparse, therefore discharge level is relatively low, when electric probe end face is close to closely knit material universe
During face, material density rise, bipolar system electric probe also discharges into highest.Therefore the electric discharge starting position of bipolar system electric probe is passed through
The readable micro-injection material interface 10 for taking out metal micro-injection material, it is then followed by the closely knit of readable taking-up metal micro-injection material
Material interface 30 (or combining the closely knit material interface 30 of acyclic type electric probe test), last can represents Wei Pen areas 50
The width (i.e. the width in micro-injection material area in Fig. 5) of micro-injection material.
Traditional acyclic type electric probe is merely capable of entering the closely knit material interface 30 on metal sample surface under explosion loading
Row identification, it cannot respond to the micro-injection material interface 10 in Wei Pen areas.The sensitivity of the utility model bipolar system electric probe is more
Height, the micro-injection material at micro-injection material interface 10 is more sparse, therefore discharge level is relatively low, traditional acyclic type electric probe
It can not detect；And the utility model is when bipolar system electric probe is close to micro-injection material interface 10, in micro-injection material interface
Micro-injection material at 10, which will strike bipolar system electric probe end face, can cause bipolar system electric probe discharging in advance, now
Micro-injection material interface 10 can be read out；Then when bipolar system electric probe end face is close to closely knit material interface 30, material is close
Degree rise, now bipolar system electric probe also discharges mutation to higher or highest, therefore discharge level is higher, therefore can also read
Closely knit material interface 30, micro-injection material area then can be drawn according to closely knit material interface 30 and micro-injection material interface 10
Width.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
- A kind of 1. bipolar system electric probe for measuring metal surface micro-injection material, it is characterised in that：Including base shaft (1), discharge electrode (2) it is fabricated by insulating materials with earth polar (3), the base shaft (1), is distinguished on the base shaft (1) along on its length direction Provided with discharge electrode (2), earth polar (3), the discharge electrode (2) and earth polar (3) are fabricated by conductive material, the discharge electrode (2) mutually it is not in contact with each other with earth polar (3)；The discharge electrode (2) has test side A and connection end A, and the earth polar (3) has detection B and connection end B is held, the base shaft (1) is test side C close to discharge electrode (2) test side A one end end, and the base shaft (1) is remote Other end end from discharge electrode (2) test side A is connection end C, and the connection end A of the discharge electrode (2) is electrically connected with the first company Cable is connect, the connection end B of the earth polar (3) is electrically connected with the second connecting cable, the test side A of the discharge electrode (2), earth polar (3) test side B, the corresponding setting of test side C three of base shaft (1).
- 2. according to the bipolar system electric probe of the measurement metal surface micro-injection material described in claim 1, it is characterised in that：It is described The first connecting groove (4) and the second connecting groove (5) are provided with base shaft (1) along on its length direction, first connection is recessed Groove (4) is parallel to each other with the second connecting groove (5), and the discharge electrode (2) is integrally located in the first connecting groove (4), describedly Pole (3) is integrally located in the second connecting groove (5).
- 3. according to the bipolar system electric probe of the measurement metal surface micro-injection material described in claim 2, it is characterised in that：It is described The test side A of discharge electrode (2), the test side B of earth polar (3), the test side C three end face of base shaft (1) are concordant, the discharge electrode (2) the spacing between test side A and the test side B of earth polar (3) is d, and its spacing d is 0.4mm.
- 4. according to the bipolar system electric probe of the measurement metal surface micro-injection material described in claim 2, it is characterised in that：Also wrap Include surface insulation protective layer, the fully wrapped around base shaft of surface insulation protective layer (1), discharge electrode (2), earth polar (3), the base shaft (1) it is fabricated by insulating ceramic materials.
- 5. according to the bipolar system electric probe of the measurement metal surface micro-injection material described in claim 2, it is characterised in that：It is described Discharge electrode (2) is the plating gold being located at using electroplating technology plating in the first connecting groove (4), and the earth polar (3) is using electricity The plating gold that depositing process plating is located in the second connecting groove (5).
- A kind of 6. test circuit that bipolar system electric probe by described in any one of Claims 1 to 5 is formed, it is characterised in that： Including bipolar system electric probe and waveshaping circuit (6), the first connecting cable, the second connecting cable of the bipolar system electric probe Electrically connected respectively with waveshaping circuit (6), second connecting cable also passes through wired earth；The waveshaping circuit (6) voltage source (E), first resistor (R are includedE), second resistance (Rp), the first electric capacity (C1), the second electric capacity (C2), 3rd resistor (Rs), the first resistor (RE) one end be connected with voltage source (E), the second resistance (Rp) one end respectively with first connect Meet cable connection, the second resistance (Rp) the other end, the first electric capacity (C1) one end, the second electric capacity (C2) one end and the One resistance (RE) the other end connection, the first electric capacity (C1) the other end, the second electric capacity (C2) the other end and 3rd resistor (Rs) one end connection, the 3rd resistor (Rs) the other end ground connection, the 3rd resistor (Rs) the other end also with second connect Connect cable electrical connection.
- 7. according to the test circuit described in claim 6, it is characterised in that：First electric capacity (the C1) capacitance be more than second Electric capacity (C2) capacitance.
- 8. according to the test circuit described in claim 6, it is characterised in that：Second resistance (the Rp) resistance and 3rd resistor (Rs) resistance be 50 Ω.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107015131A (en) * | 2017-05-27 | 2017-08-04 | 中国工程物理研究院流体物理研究所 | Measure the bipolar system electric probe and test circuit of metal surface micro-injection material |
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- 2017-05-27 CN CN201720615795.6U patent/CN206892255U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015131A (en) * | 2017-05-27 | 2017-08-04 | 中国工程物理研究院流体物理研究所 | Measure the bipolar system electric probe and test circuit of metal surface micro-injection material |
| CN107015131B (en) * | 2017-05-27 | 2023-06-27 | 中国工程物理研究院流体物理研究所 | Bipolar electric probe and testing circuit for measuring micro-injection substances on metal surface |
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