CN206074696U - Capacity measurement machine - Google Patents
Capacity measurement machine Download PDFInfo
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- CN206074696U CN206074696U CN201621068508.6U CN201621068508U CN206074696U CN 206074696 U CN206074696 U CN 206074696U CN 201621068508 U CN201621068508 U CN 201621068508U CN 206074696 U CN206074696 U CN 206074696U
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Abstract
The utility model discloses a kind of capacity measurement machine, it is desirable to provide a kind of testing efficiency is high, test accurate capacity measurement machine.This utility model includes electric cabinet, mechanism for testing is installed on the electric cabinet, the mechanism for testing includes voice coil motor and the motion module being connected concentric with the voice coil motor, the bottom of the motion module is provided with grating scale, the top of the motion module is provided with support plate component, and the side of the support plate component is provided with pressure sensing mechanism.This utility model is applied to the technical field of capacity measurement.
Description
Technical field
This utility model is related to the wave testing of capacitance produced after electronic product is mutually touched, more particularly to a kind of
Capacity measurement machine.
Background technology
The test philosophy of electric capacity is at present：Product is contacted with capacitor board with a constant pressure.Power supply provides 2V respectively
To capacitor board and the metallic plate of the inside of product, so as to form a simple balanced bridge, such product will be stored voltage
Micro electronics, as electric capacity charges.After product is fully charged, so that it may measure its capacitance, so as to judge the good of product
It is bad.The qualified capacitance of product is 146fF ~ 156fF, and this test value is a very faint capacitance, extraneous slight change
Test value will be had an impact.
According to test philosophy, the factor of test is affected：
1. the stability and accuracy of capacitance；
2. the stability and accuracy of signal transmission.
According to capacitance calculation formula：；
Understand when voltage and the timing of test environment one, the distance of the size and two-plate of electric capacity, between facing area, pole plate
Medium is relevant.As product can directly affect the size of the distance between they and contact area to the size of capacitor board pressure,
The size of its capacitance is directly affected.So providing a stable accurately pressure, it is the essential condition of capacity measurement.Jing is tried
Test and understand, when other one timings of situation, product increase the pressure of 1G to capacitor board, its capacitance will change 3fF.Second, by
It is very faint in test signal, so the electromagnetic wave in the external world can be interfered to test signal.The also electric wire of transmission signal
Length is long or quality of material can all cause the phenomenon of signal attenuation.At present, this compression type method of testing, need product with
Constant pressure and capacitor board continuous contact are for a period of time forming.Existing technology is one weight one of loading on product
Fixed counterweight, then makes product and circuit board contacts in the form of freely falling body；Or using motor belt motor movable property product move and with
Capacitor board is contacted.These modes there are problems that a lot：
1. due to no feedback circuit, so how many product and circuit board actual pressures are to detect；2. due to
Freely falling body can produce impulsive force and can damage product；
3. this plain mode, it is impossible to which stable high-precision pressure is provided；
4. the electromagnetic wave that other electronic equipments are produced can be interfered to test signal.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, there is provided a kind of testing efficiency
High, the accurate capacity measurement machine of test.
The technical scheme adopted by this utility model is：This utility model includes electric cabinet, is provided with the electric cabinet
Mechanism for testing, the mechanism for testing include voice coil motor and the motion module being connected concentric with the voice coil motor, the motion
The bottom of module is provided with grating scale, and the top of the motion module is provided with support plate component, and the side of the support plate component sets
Have a pressure sensing mechanism, the voice coil motor, the grating scale and the pressure sensing mechanism be provided with the electric cabinet
Computer be electrically connected with.
Further, the mechanism for testing also includes base plate and installing plate, and the base plate is installed on the upper of the electric cabinet
End face, the installing plate are installed on the base plate, and one end of the base plate is provided with the motor being connected with the installing plate
Support, the voice coil motor are installed on the motor support frame and on one end of the installing plate, the motion module
It is installed on the upper end of the installing plate.
Further, the pressure sensing mechanism includes sensor stand, pressure transducer and capacitive sensing plate, the biography
Sensor bracket is installed on the other end of the installing plate, and the upper end of the sensor stand is provided with the pressure transducer, institute
The front end face for stating pressure transducer is provided with the capacitive sensing plate.
Further, the support plate component includes support plate base and the product support plate being installed on the support plate base, institute
The two ends for stating support plate base are provided with locating dowel, and the front end of the support plate base is provided with signal pin, and the support plate base is provided with
Base guide groove, the both sides of the product support plate are provided with the elastic mechanism being adapted with the base guide groove, and the product is carried
The front end face of plate is provided with product fixing end.
Further, the product support plate is formed around conducting metal, and the front end face of the product support plate is insulated plastic
Glue, the product fixing end are made up of gold plated copper；The signal pin is gold-plated pin, and the side of the gold-plated pin is provided with insulation plastic cement
Layer, the edge of the support plate base are made up of conducting metal, and the front end face of the support plate base is also made up of insulation plastic cement.
Further, the slide block that the motion module is included line slideway and is connected with the voice coil motor between two parties, it is described
Slide block is installed on the line slideway, and the support plate component is connected with the slide block.
Further, the outside of the voice coil motor is provided with motor shielding cover, and the outside of the grating scale is also equipped with
Grating scale radome.
Further, four ends of the base plate are provided with shock-absorbing foot pad.
Further, the electric cabinet is provided with outer protection cover, and the mechanism for testing is located inside the protective cover, institute
State the element in electric cabinet and be also equipped with element radome, be connected between the electric cabinet and the mechanism for testing holding wire and
Power line, is provided with holding wire protective cover, is provided with metal between the electric cabinet and the mechanism for testing on the holding wire
Division board.
The beneficial effects of the utility model are：As this utility model includes electric cabinet, the upper surface peace of the electric cabinet
Equipped with mechanism for testing, the mechanism for testing includes voice coil motor, the motion module being connected concentric with the voice coil motor, the fortune
The bottom of dynamic model group is provided with grating scale, and the top of the motion module is provided with support plate component, the side of the support plate component
Be provided with pressure sensing mechanism, the voice coil motor, the grating scale and the pressure sensing mechanism with set in the electric cabinet
Some computers are electrically connected with, so which uses the voice coil motor as the load that the motion module top is promoted for power source
Board component, then displacement inspection is carried out to the support plate component with the grating scale, then with the pressure sensing mechanism as pressure
Feedback terminal, the last computer are precisely controlled the voice coil motor by pressure feedback signal, so constitute closed loop examination
Test loop, make that testing efficiency of the present utility model is high, test more accurate.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is sectional view of the present utility model；
Fig. 3 is the structural representation of mechanism for testing；
Fig. 4 is the structural representation of support plate component.
Specific embodiment
As shown in Figures 1 to 4, in the present embodiment, this utility model includes electric cabinet 1, is provided with the electric cabinet 1
Mechanism for testing 2, the mechanism for testing 2 include voice coil motor 3 and the motion module 4 being connected concentric with the voice coil motor 3, described
The bottom of motion module 4 is provided with grating scale 5, and the top of the motion module 4 is provided with support plate component 6, the support plate component 6
Side be provided with pressure sensing mechanism 7, the voice coil motor 3, the grating scale 5 and the pressure sensing mechanism 7 with it is described
The computer being provided with electric cabinet 1 is electrically connected with；The voice coil motor 3 is a kind of device for converting electrical energy into mechanical energy, and
The motion of linear type and limited pivot angle is realized, it is using magnetic pole in the magnetic field produced from eternal magnetic field or hot-wire coil conductor
Interact and produce regular motion, can be easily reached using suitable position feedback and induction installation its positioning precision
10NM, up to 300g, actual acceleration depends on loaded article tool and stops working condition acceleration；The grating 5 is using grating
The measurement feedback device of optical principle work, can be used as the detection of straight-line displacement or angular displacement, and the signal of its measurement output is
The characteristics of digit pulse, accuracy of detection height big with detection range, fast response time.
In the present embodiment, the mechanism for testing 2 also includes base plate 8 and installing plate 9, and the base plate 8 is installed on the electricity
The upper surface of control case 1, the installing plate 9 are installed on the base plate 8, and one end of the base plate 8 is provided with and 9 phase of the installing plate
The motor support frame 10 of connection, the voice coil motor 3 are installed on the motor support frame 10 and positioned at the one of the installing plate 9
On end, the motion module 4 is installed on the upper end of the installing plate 9.
In the present embodiment, the pressure sensing mechanism 7 includes sensor stand 71, pressure transducer 72 and capacitive sensing
Plate 73, the sensor stand 71 are installed on the other end of the installing plate 9, and the upper end of the sensor stand 71 is installed
Pressure transducer 72 is stated, the front end face of the pressure transducer 72 is provided with the capacitive sensing plate 73.The pressure transducer
72 is that, by the sensor that pressure conversion is electric signal output, the pressure transducer 72 is general quick by elastic sensing element and displacement
Sensing unit or Strain Meter Set are into the effect of elastic sensing element is to make to be acted on certain area by measuring pressure and be converted to displacement
Or strain, the signal of telecommunication with pressure into certain relation is converted to by displacement sensing element or strain gauge then.
In the present embodiment, the motion module 4 includes straight-line guide rail slide block, and the slide block is installed on the line slideway
On, the support plate component 6 is connected with the slide block.The voice coil motor 3 and the line slide rail are horizontally mounted, the voice coil loudspeaker voice coil
Motor 3 and the slide block are placed in the middle so that frictional force on the same line, is reduced to minimum with moving component by power source.Make
The voice coil motor 3 is linked together with the motion module 4 with rigid good quality light aluminum alloy part, it is ensured that power is steady
It is fixed to export.Jing trial movements module only needs the thrust just energy stable motion of 20G.The position of the detection product of the grating scale 5 simultaneously will
Position feeds back to the voice coil motor 3.Beginning, product can be close to the capacitive sensing plate 73 with the speed of 0.1M/S at a high speed, when
When the distance of product and the capacitive sensing plate 73 is 0.2mm ± 0.02mm, the grating scale 5 will feed back to the calculating
Machine, voice coil motor 3 described in the computer controls carry out slowing down and slowly contact product.Motor process is not only can ensure that so
It is stable and rapid, and can ensure that product will not clash into the capacitive sensing plate 73.The capacitive sensing plate 73 is pacified below
Filled a pressure transducer 72, the pressure transducer 72 accurately can detect product and the capacitive sensing plate 73 it
Between pressure.Initial pressure is 95G, and the pressure transducer 72 is with each second of the velocity feedback pressure information of 5000 times to described
Computer, the computer control the voice coil motor 3 according to information and are pressurizeed, until pressure value stabilization is 98G ± 3G's
State simultaneously carries out capacity measurement after continuing 7 seconds again.
The voice coil motor 3 and the grating scale 5 can discharge electromagnetic interference test, so will increase motor shielding respectively
Cover 11 and grating scale radome 12.The pressure transducer 72 is very sensitive, through experiment, the pressure transducer is placed on
As long as side has desk to move on desktop, the pressure transducer can all be affected.In order to prevent outside concussion meeting to measurement
The impact of precision, this fixes the pressure transducer using the new aluminum alloy part module using high rigidity, and
Module is provided with shock-absorbing foot pad 13, isolating exterior vibration with four ends that fuselage junction is the base plate 8.
The beneficial effect of above-mentioned design structure：Product is reached in 24 ~ 36 seconds with the pressure energy of the capacitive sensing plate 73
To 98G ± 3G and it is always maintained at；The spot speed that product is contacted with the capacitive sensing plate 73 is pressure that is very slow and exporting
It is constant, all products will not be impacted, i.e., not over 101G, therefore product will not be damaged；Increased the pressure to pass
Sensor 72, can detect the pressurized actual value of product so that test value is exactly the real pressure value of product, prevent and survey by mistake
Phenomenon；The computer recording pressure value and capacity measurement value are simultaneously compared, and can so be best understood from the quality of product；
The motor shielding cover 11 and the grating scale radome 12 can shield the extraneous signal of telecommunication well, prevent test disturbed；Subtract
Shake system can significantly weaken interference of the extraneous concussion to above-mentioned pressure transducer.
In the present embodiment, as product is arranged on the product support plate, along with product in the form of screw-threaded coupling
Product volume very little, if be mounted directly can risk that is highly difficult and having damage product.This utility model is separated using support plate
Formula structure, i.e. the support plate component 6 include support plate base 61 and the product support plate 62 being installed on the support plate base 61, described
The two ends of product support plate 62 are all provided with fluted, and the two ends of the support plate base 61 are provided with locating dowel 63, i.e., the locating dowel 63 is pacified
The groove bottom loaded on left and right two ends, the front end of the support plate base 61 are provided with signal pin 64, i.e. the signal pin 64
The groove bottom in left side is installed on, the groove on the support plate base 61 is provided with base guide groove 65, the product
The both sides of support plate 62 are provided with the elastic mechanism 66 being adapted with the base guide groove 65, and the front end face of the product support plate 62 sets
There is product fixing end 67；Its operation is：The elastic mechanism 66 of the both sides of the product support plate 62 is pinched with finger, easily will
Its taking-up, then installs product, after product is installed, pinches the elastic mechanism 66 of the both sides of the product support plate 62,
The gathering sill 65 along the support plate base 61 is put into, and unclamps handss, the described elastic machine of the both sides of the product support plate 62
Structure 66 will extrude the gathering sill 65 and the product support plate 62 is sent in the locating dowel 63 while 64 meeting of the signal pin
Contact to form signal of telecommunication loop with the product fixing end 67.The last elastic mechanism 66 can block the product support plate 62,
Prevent the phenomenon for occurring coming off or offseting in test process from occurring.
The beneficial effect of above-mentioned design structure：Product is quick and easy for installation；In product test, another product can be with
Install simultaneously, can so save the time and improve efficiency；This mounting means can guarantee that X-axis and Y direction tolerance is ± 0.03mm.
In the present embodiment, the product support plate 62 is formed around conducting metal, the front end face of the product support plate 62
For the plastic cement that insulate, the product fixing end 67 is made up of gold plated copper；The signal pin 64 be gold-plated pin, the side of the gold-plated pin
Be provided with insulation plastic layer, the edge of the support plate base 61 is made up of conducting metal, the front end face of the support plate base 61 also by
Insulation plastic cement is made.
In order to protect the signal of telecommunication not disturbed by external signal.The product support plate 62 and the support plate base 61 are all moulds
The shielding construction for intending electrical signal line is designed, i.e. " conducting metal+insulation plastic cement+filled gold " this structure.External conductive
Metal can be connected with ground wire, and external electromagnetic waves will be derived after touching external metallization at once, and interior metal is signal transmission
Line, in order to reduce distorted signals, the signal pin 64 uses craft of gilding, Gold plated Layer strengthen signal output ability, it is ensured that letter
It is number normal to export.The insulation plastic layer can completely cut off ground wire, prevent short circuit phenomenon.
This structure can protect the signal of capacity measurement well, it is ensured that distorted signals are greatly reduced not over 1fF
The appearance surveyed by mistake
In the present embodiment, the electric cabinet 1 is provided with outer protection cover, and the mechanism for testing 2 is located at the protective cover
Inside 14, the element in the electric cabinet 1 is also equipped with element radome 15, between the electric cabinet 1 and the mechanism for testing 2
Holding wire and power line are connected with, holding wire protective cover, the electric cabinet 1 and the mechanism for testing on the holding wire, is provided with
Metal division board 16 is provided between 2.
The signal letter and other connecting lines use 75 ohm coaxial cables, are measured by four line modes, signal path
Using the shielding material such as the holding wire protective cover, described metal division board 15 made by metal, it is ensured that signal is in transmitting procedure
In by extraneous electromagnetic interference, improve the stability of measurement.
This structure can protect the signal of capacity measurement well, it is ensured that distorted signals are greatly reduced not over 1fF
The appearance surveyed by mistake.
This utility model is applied to the technical field of capacity measurement.
Although embodiment of the present utility model is described with practical solution, do not constitute and this utility model is contained
The restriction of justice, for those skilled in the art, according to this specification to the modification of its embodiment and the group with other schemes
Conjunction will be apparent from.
Claims (9)
1. a kind of capacity measurement machine, it is characterised in that：It includes electric cabinet（1）, the electric cabinet（1）On mechanism for testing is installed
（2）, the mechanism for testing（2）Including voice coil motor（3）And with the voice coil motor（3）The motion module for connecting with one heart（4）, institute
State motion module（4）Bottom be provided with grating scale（5）, the motion module（4）Top be provided with support plate component（6）, institute
State support plate component（6）Side be provided with pressure sensing mechanism（7）, the voice coil motor（3）, the grating scale（5）With the pressure
Power sensing mechanism（7）With the electric cabinet（1）The computer being inside provided with is electrically connected with.
2. capacity measurement machine according to claim 1, it is characterised in that：The mechanism for testing（2）Also include base plate（8）With
Installing plate（9）, the base plate（8）It is installed on the electric cabinet（1）Upper surface, the installing plate（9）It is installed on the base plate
（8）On, the base plate（8）One end be provided with and the installing plate（9）The motor support frame being connected（10）, the voice coil motor
（3）It is installed on the motor support frame（10）Above and positioned at the installing plate（9）One end on, the motion module（4）Install
In the installing plate（9）Upper end.
3. capacity measurement machine according to claim 2, it is characterised in that：The pressure sensing mechanism（7）Including sensor
Support（71）, pressure transducer（72）With capacitive sensing plate（73）, the sensor stand（71）It is installed on the installing plate（9）
The other end, the sensor stand（71）Upper end the pressure transducer is installed（72）, the pressure transducer（72）
Front end face the capacitive sensing plate is installed（73）.
4. capacity measurement machine according to claim 1, it is characterised in that：The support plate component（6）Including support plate base
（61）Be installed on the support plate base（61）On product support plate（62）, the support plate base（61）Two ends be provided with locating dowel
（63）, the support plate base（61）Front end be provided with signal pin（64）, the support plate base（61）It is provided with base guide groove
（65）, the product support plate（62）Both sides be provided with and the base guide groove（65）The elastic mechanism being adapted（66）, it is described
Product support plate（62）Front end face be provided with product fixing end（67）.
5. capacity measurement machine according to claim 4, it is characterised in that：The product support plate（62）Be formed around conduction
Metal, the product support plate（62）Front end face for insulation plastic cement, the product fixing end（67）It is made up of gold plated copper；The letter
Number pin（64）For gold-plated pin, the side of the gold-plated pin is provided with insulation plastic layer, the support plate base（61）Edge for conduction
Metal is made, the support plate base（61）Front end face also by insulation plastic cement make.
6. capacity measurement machine according to claim 1, it is characterised in that：The motion module（4）Including line slideway and
With the voice coil motor（3）The slide block of connection placed in the middle, the slide block are installed on the line slideway, the support plate component（6）
It is connected with the slide block.
7. capacity measurement machine according to claim 1, it is characterised in that：The voice coil motor（3）Outside be provided with electricity
Machine radome（11）, the grating scale（5）Outside be also equipped with grating scale radome（12）.
8. capacity measurement machine according to claim 2, it is characterised in that：The base plate（8）Four ends be provided with damping
Callosity（13）.
9. capacity measurement machine according to claim 1, it is characterised in that：The electric cabinet（1）It is provided with protective cover（14）,
The mechanism for testing（2）Positioned at the protective cover（14）Inside, the electric cabinet（1）Interior element is also equipped with element radome
（15）, the electric cabinet（1）With the mechanism for testing（2）Between be connected with holding wire and power line, on the holding wire arrange
There are holding wire protective cover, the electric cabinet（1）With the mechanism for testing（2）Between be provided with metal division board（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621068508.6U CN206074696U (en) | 2016-09-21 | 2016-09-21 | Capacity measurement machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621068508.6U CN206074696U (en) | 2016-09-21 | 2016-09-21 | Capacity measurement machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206074696U true CN206074696U (en) | 2017-04-05 |
Family
ID=58438985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621068508.6U Active CN206074696U (en) | 2016-09-21 | 2016-09-21 | Capacity measurement machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206074696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353602A (en) * | 2016-09-21 | 2017-01-25 | 珠海市运泰利自动化设备有限公司 | Capacitance tester |
-
2016
- 2016-09-21 CN CN201621068508.6U patent/CN206074696U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353602A (en) * | 2016-09-21 | 2017-01-25 | 珠海市运泰利自动化设备有限公司 | Capacitance tester |
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