CN104950035B - A kind of detection method and power frequency excitation detector of Vibration induction - Google Patents
A kind of detection method and power frequency excitation detector of Vibration induction Download PDFInfo
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- CN104950035B CN104950035B CN201510369243.7A CN201510369243A CN104950035B CN 104950035 B CN104950035 B CN 104950035B CN 201510369243 A CN201510369243 A CN 201510369243A CN 104950035 B CN104950035 B CN 104950035B
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- connecting plate
- resistance
- type circular
- probe
- slide rheostat
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Abstract
The invention provides a kind of detection method of Vibration induction, lasting vibrations are produced by the stimulation circuit being made up of resistance, coil windings and iron core and act on measured body surface, change the amplitude of vibrations, the current value of resistance when Vibration induction signal occurs in record measured body by the size of circulating current in regulating winding winding；The present invention is also corresponding to provide a kind of detector for the above method, including main frame, slide rheostat and stimulation probe unit, main frame includes AC/DC voltage transformation modules and power circuit, slide rheostat is using partial pressure type connected mode access power circuit, stimulation probe unit includes iron core, the coil windings electrically connected with slide rheostat, connecting plate and probe, in on iron core, iron core is connected coil winding wound by connecting plate and probe；The present invention, by accurately detecting to obtain Vibration induction threshold value, is then contrasted, so as to judge the Testing index situation of measured body using quantitative shock sensing detection method with standard value.
Description
Technical field
The present invention relates to a kind of detection method and detector for Vibration induction, belong to shock detection technical field.
Background technology
Shock detection can be applied to material flaw detection and body surface vibrations tactilely-perceptible detection, wherein the generation and regulation that shake are
Two key issues of shock detection.Existing vibrations generating means is more using electromagnet as dynamical element, and electromagnet produces after being powered
Magnetic-adsorption armature, vibrations are produced when armature is adsorbed, " one kind is based on Embedded digital vibration induction threshold value such as patent application
Detector " (application number：CN201310129815), shaking for vibrations is adjusted by changing the alternating voltage size of electromagnet
Width；A kind of utility model patent " medical vibratory generator " (application number：CN92242559), the regulation of vibrations is controlled by spring.
Vibrations are produced by electromagnet absorption armature, and the moment that armature contacts with electromagnet produces temporary impact, therefore such a mode produces
Vibrations stationarity and continuity it is poor.
The content of the invention
It is an object of the invention to solve the deficiencies in the prior art, and provide one kind can accurately, quantitatively detect surface shake
Method and power frequency the excitation detector that innervation is answered, can be contrasted surface vibration induced electricity flow valuve with standard value, so as to judge
The Testing index situation of measured body.
Technical scheme is used by realizing the object of the invention, a kind of detection method of Vibration induction, comprises the following steps：
(1) lasting vibrations are produced by the stimulation circuit that is made up of resistance, coil windings and iron core, and by caused shake
It is dynamic that measured body surface is directly acted on by probe；
(2) size of circulating current in coil windings is changed by the resistance of regulation resistance, and then changes stimulation circuit production
The amplitude of raw vibrations, adjust to measured body and Vibration induction signal occur；
(3) determine and record measured body and the current value that resistance is flowed through during Vibration induction signal occur.
The resistance is provided with three, including a variable resistor and two fixed resistances, variable by adjusting in step (2)
The resistance of resistance changes the size of circulating current in coil windings.
The current value of three resistance is determined in step (3) and judges whether exceptional value, by it if it exceptional value be present
Calculating current average value after removal.
The present invention is also corresponding to provide a kind of power frequency excitation detector for the above method, including at least with display screen
Main frame and the pressure regulation unit and stimulation probe unit electrically connected with main frame, the pressure regulation unit are slide rheostat, the master
Machine includes the AC/DC voltage transformation modules and power circuit of electrical connection, and power circuit is by resistance, switch and fuse series connection structure
Into the pressure regulation unit is slide rheostat, and slide rheostat is using partial pressure type connected mode access power circuit, the stimulation
Contact unit includes iron core, the coil windings electrically connected with slide rheostat, connecting plate A, connecting plate B and probe, connecting plate A and
Connecting plate B is the straight panel that thickness is 1.5~2.5 ㎜, and coil winding wound is consolidated on iron core and by connecting plate B
Fixed, the connecting plate B other end is connected by screw with connecting plate A, and probe vertical is fixed on the connecting plate A other end, coil around
Resistance is in series between group and slide rheostat.
The display screen is installed on the control panel of main frame, and control panel, which is provided with, to be used to adjust slide rheostat resistance
Knob.
Be provided with main frame and be used to detecting the current measuring element of each resistance and slide rheostat electric current, current measuring element with
Display screen is electrically connected for detection current information to be delivered into display screen.
The shape and size all same and rectangular, the length of connecting plate of two pieces of connecting plates of connecting plate A and connecting plate B
For 55 ± 2.75 ㎜, width is 24 ± 1.2 ㎜.
The length of connecting plate is 55 ㎜, and width is 24 ㎜, and thickness is 2 ㎜.
A type circular hole is offered on connecting plate A and 5 apertures are less than two type circular holes of a type circular hole, wherein 3 two types circles
Hole is along a type circular hole circumference uniform distribution and is located at connecting plate A tops, and remaining 2 two type circular holes are symmetrically distributed on connecting plate A simultaneously
And it is located at connecting plate A bottoms, the main body of probe is embedded in a type circular hole, and the bottom of probe is fixed by three screws, three spiral shells
Nail is individually fixed in three two type circular holes at a type circular hole circumference；4 two type circular holes, 4 two types are offered on connecting plate B
Circular hole is symmetrical on connecting plate B, 2 two type circular holes positioned at connecting plate B tops and 2 two positioned at connecting plate A bottoms
Type circular hole overlaps and is connected by screw fixation, is provided with 2 two type circular holes of connecting plate B bottoms and is used to support and consolidate
Determine the support column of coil windings.
As shown from the above technical solution, the detection method of Vibration induction provided by the invention, by by resistance, coil windings
Lasting vibrations are produced with the stimulation circuit that iron core is formed, because the vibrations are microseismic activity stimulation, stimulation are only shaken and reaches one
Determining intensity could be perceived by measured body, act on measured body using continuous vibration, ensure quilt when shockproofness reaches threshold of perception current
Surveying body can accurately perceive；The intensity that resistance size (size of current of coil windings) by changing resistance adjusts vibrations (is shaken
Width), when resistance is fixed, shockproofness is fixed and remained unchanged, and ensures the precision of detection；To ensure accuracy of detection, inspection
Survey the current value of three resistance and remove exceptional value, detected value the most final of averaging, avoid because resistance damage causes to detect
As a result there is relatively large deviation.
Detector is encouraged provided by the present invention for the power frequency of Vibration induction, will be external by AC/DC voltage transformation modules
Alternating voltage is converted to the DC voltage for being available for device to work, and concatenating fuse in order to avoid electric current is excessive, in power circuit protects
Demonstrate,prove the security of circuit；Coil windings, which are powered, produces magnetic field, and iron core drives connecting plate B continuous vibrations under the action of a magnetic force,
Vibrations are transferred to probe by connecting plate B by connecting plate A, and probe directly contacts measured body surface, adjusted by slide rheostat
The size of the electric current of flowing through coil winding so that the vibrations amplitude size continuously adjustable of probe, when slide rheostat resistance is consolidated
Regularly, shockproofness is fixed and remained unchanged, and vibrations caused by iron core are conducted to probe, connection by connecting plate A and connecting plate B
The continuity of probe vibrations is bad when plate thickness is blocked up, or even the vibrations with motionless probe；Thickness is too thin, does not have well
Fixation, job insecurity of popping one's head in, and the service life of instrument can be caused to shorten, the present invention determines to connect by many experiments
The optimum thickness of fishplate bar is 2 ㎜；Final test data is obtained by the electric current for detecting slide rheostat and two resistance, with this
To record the test result of measured body, final test data is worth to by the electric current of 3 resistance, therefore testing result is more smart
Really.
The resistance of slide rheostat is adjusted by the knob on host computer control panel, facilitates the use of the detector；Slide
Current measuring element is all connected with rheostat and two resistance, current measuring element is electrically connected with display screen for that will detect electric current
On information conveyance to display screen, it is easy to testing result intuitively to show.
Connecting plate A and connecting plate B is porous rectangular thin plate, and connecting plate A top offers one for fixed probe
Type circular hole and 3 two type circular holes along a type circular hole circumference uniform distribution, the main body of probe are embedded in a type circular hole, and the bottom of probe leads to
Cross three screws to fix, three screws are individually fixed in three two type circular holes, and said structure ensures the fixed fastness of probe
And durability；Connecting plate A and connecting plate B, for the conduction of vibrations, ensures the vibrations that transformer is brought by two mode connects for screw
Probe end (the tested body portion of contact) can be efficiently transferred to, two screws are individually fixed in two type circular holes of two groups of coincidences
In, two two type circular holes that connecting plate B bottoms open up are used for the support and fixation of coil windings.
Brief description of the drawings
Fig. 1 is the circuit diagram that power frequency provided by the invention encourages detector.
Fig. 2 is the external structure schematic diagram of detector.
Fig. 3 is connecting plate A structural representation.
Fig. 4 is connecting plate B structural representation.
Wherein, 1-AC/DC voltage transformation modules, 2- power circuits, 3- current measuring elements, 4- stimulation probe units, 5-
Resistance, 6- switches, 7- fuses, 8- slide rheostats, 9- probes, 10- connecting plates A, 11- iron core, 12- connecting plates B, 13- branch
Dagger, 14- coil windings, 15- main frames, 16- knobs, 17- attaching plugs, the type circular holes of 18- mono-, the type circular holes of 19- bis-, 20- are shown
Screen.
Embodiment
The present invention is illustrated in detail with reference to the accompanying drawings and examples, present disclosure is not limited to following
Embodiment.
Embodiment 1：The detection method for the Vibration induction that the present embodiment provides, for the flaw detection of metal material, including it is as follows
Step：
(1) lasting vibrations are produced by the stimulation circuit being made up of 3 resistance, coil windings and iron core, and will produced
Vibrations tested metal material surface is directly acted on by probe, 3 resistance include a variable resistor and two fixed electricity
Resistance；
(2) change the size of circulating current in coil windings by adjusting the resistance of variable resistor, and then change stimulation electricity
The amplitude of vibrations, adjusts to tested metal material and Vibration induction signal occurs caused by road, i.e. setting shakes threshold value and passes through shake
Dynamic inductor obtains the vibrations of tested metal material, and when vibrations reach threshold value, Shock inductor sends Vibration induction signal, or
Regulation to tested metal material resonates；
(3) determine and record tested metal material and current value and judgement that three resistance is flowed through during Vibration induction signal occur
With the presence or absence of exceptional value, rear calculating current average value is removed it if it exceptional value be present.
By current average compared with the measured value (standard value) of not damaged metal, and then judge tested metal material
There is not damaged inside.
The present embodiment provide be used for Vibration induction power frequency excitation detector, its structure as depicted in figs. 1 and 2, including
The main frame 15 and attaching plug 17 electrically connected with main frame, pressure regulation unit and stimulation probe unit 4, the main frame include electrical connection
AC/DC voltage transformation modules 1, power circuit 2 and current measuring element 3, power circuit is by resistance 5, switch 6 and fuse 7
In series, the pressure regulation unit is slide rheostat 8, and slide rheostat accesses power circuit simultaneously using partial pressure type connected mode
And be packaged in main frame, the display screen 3 that is electrically connected with current measuring element is installed and for adjusting on the control panel of main frame
The knob 16 of slide rheostat resistance, current measuring element are used to detect each resistance and slide rheostat electric current and will detect electric current
On information conveyance to display screen；
The stimulation probe unit include iron core 11, the coil windings 14 electrically connected with slide rheostat, connecting plate A10,
Connecting plate B12 and probe 9, coil winding wound is fixed on iron core and by connecting plate B, the connecting plate B other end
It is connected by screw with connecting plate A, probe vertical is fixed on the connecting plate A other end, between coil windings and slide rheostat
Resistance 5 is in series with, as shown in Figure 3 and Figure 4, connecting plate A and connecting plate B are that length is 55 ㎜, and width is 24 ㎜, thickness 2
㎜ rectangle straight panel, a type circular hole 18 is offered on connecting plate A and 5 apertures are less than two type circular holes 19 of a type circular hole, wherein 3
Individual two types circular hole is along a type circular hole circumference uniform distribution and is located at connecting plate A tops, and remaining 2 two type circular holes are symmetrically distributed in connection
On plate A and it is located at connecting plate A bottoms, the main body of probe is embedded in a type circular hole, and the bottom of probe is fixed by three screws,
Three screws are individually fixed in three two type circular holes at a type circular hole circumference；4 two type circular holes are offered on connecting plate B
Two axisymmetricals distribution of 19,4 two type circular holes along connecting plate B, 2 two type circular holes positioned at connecting plate B tops are with being located at
2 two type circular holes of connecting plate A bottoms overlap and are connected by screw fixation, 2 two type circular holes positioned at connecting plate B bottoms
In be provided be used for support and fixed coil winding support column 13.
Embodiment 2：The detection method for the Vibration induction that the present embodiment provides, the detection of tactilely-perceptible is shaken for body surface,
Comprise the following steps：
(1) lasting vibrations are produced by the stimulation circuit being made up of 3 resistance, coil windings and iron core, and will produced
Vibrations tester's body surface is directly acted on by probe, 3 resistance include a variable resistor and two fixed resistances；
(2) change the size of circulating current in coil windings by adjusting the resistance of variable resistor, and then change stimulation electricity
The amplitude of vibrations, adjusts to tester and perceives vibrations caused by road；
(3) determine and record when tester perceives vibrations and flow through the current value of three resistance and judge whether exception
Value, removes it rear calculating current average value if it exceptional value be present.
Using quantitative sensing inspection method, using current value as final detection object, what it was assessed is shaken by skin
Tactilely-perceptible caused by stimulation is strong and weak, senses threshold value by accurately detecting to obtain tester's skin irritatin, then with standard value
Contrasted, so as to judge the sensitivity of the tactile class stress reaction of tester.
The power frequency for Vibration induction that the present embodiment provides encourages detector, encourages and examines with the power frequency that embodiment 1 provides
Survey instrument structure is identical, and here is omitted.
The power frequency excitation detector for Vibration induction that the present embodiment provides, operation principle are as follows：
(1) power unit, using 220V household voltage table, 220V is exchanged by AC/DC voltage transformation modules
Voltage conversion be available for ammeter work 5V DC voltages, meanwhile, in order to avoid electric current it is excessive the problem of, pass through fuse
(F1) security of circuit is ensured；
(2) shaking part, the magnetic field force induced vibrations of iron core are made by being passed through electric current in coil windings, vibrations pass through connecting plate
On conduction to probe, so as to drive probe to shake, according to the thoughts and feelings of tester, by adjusting slide rheostat so that flow through line
It is different to enclose the electric current of winding, drives probe to produce the vibrations of the adjustable various amplitude of size；
(3) display portion, flow through fixed resistance to show by current measuring element (ammeter) (R1, resistance are 2K Ω；
R3, resistance are 1K Ω) and variable resistor (slide rheostat R2) electric current, as last test data, surveyed with this to record
The test result of examination person.
Claims (6)
1. a kind of power frequency excitation detector of detection method for Vibration induction, the detection method of the Vibration induction are included such as
Lower step：(1) lasting vibrations are produced by the stimulation circuit that is made up of resistance, coil windings and iron core, and by caused shake
It is dynamic that measured body surface is directly acted on by probe；(2) circulating current in coil windings is changed by the resistance of regulation resistance
Size, and then change the amplitude of vibrations caused by stimulation circuit, adjust to measured body and Vibration induction signal occur；(3) determine simultaneously
There is the current value that resistance is flowed through during Vibration induction signal in record measured body, and the power frequency excitation detector comprises at least band and shown
The main frame of screen and the pressure regulation unit and stimulation probe unit electrically connected with main frame, it is characterised in that：The main frame includes being electrically connected
The AC/DC voltage transformation modules and power circuit connect, power circuit is in series by resistance, switch and fuse, the pressure regulation
Unit is slide rheostat, and slide rheostat is using partial pressure type connected mode access power circuit, the stimulation probe unit bag
Iron core, the coil windings electrically connected with slide rheostat, connecting plate A, connecting plate B and probe are included, connecting plate A and connecting plate B are equal
For the straight panel that thickness is 1.5~2.5 ㎜, coil winding wound is fixed on iron core and by connecting plate B, connecting plate B
The other end be connected by screw with connecting plate A, probe vertical is fixed on the connecting plate A other end, and coil windings become with sliding
Resistance is in series between resistance device.
2. power frequency according to claim 1 encourages detector, it is characterised in that：The display screen is installed on the control of main frame
On panel, control panel is provided with the knob for being used for adjusting slide rheostat resistance.
3. power frequency according to claim 1 encourages detector, it is characterised in that：In main frame be provided be used for detect each resistance and
The current measuring element of slide rheostat electric current, current measuring element electrically connect with display screen, defeated for that will detect current information
Deliver on display screen.
4. power frequency according to claim 1 encourages detector, it is characterised in that：Two pieces of connecting plates of connecting plate A and connecting plate B
Shape and size all same and rectangular, the length of connecting plate is 55 ± 2.75 ㎜, and width is 24 ± 1.2 ㎜.
5. power frequency according to claim 4 encourages detector, it is characterised in that：The length of connecting plate is 55 ㎜, and width is
24 ㎜, thickness are 2 ㎜.
6. power frequency according to claim 1 encourages detector, it is characterised in that：A type circular hole and 5 are offered on connecting plate A
Individual aperture is less than two type circular holes of a type circular hole, wherein 3 two type circular holes are along a type circular hole circumference uniform distribution and are located at connecting plate A
Top, remaining 2 two type circular holes are symmetrically distributed on connecting plate A and are located at connecting plate A bottoms, and the main body of probe is embedded in a type
In circular hole, the bottom of probe is fixed by three screws, and three screws are individually fixed in three two types at a type circular hole circumference
In circular hole；4 two type circular holes are offered on connecting plate B, 4 two type circular holes are symmetrical on connecting plate B, positioned at connecting plate B
2 two type circular holes on top overlap with 2 two type circular holes positioned at connecting plate A bottoms and are connected by screw fixation, are located at
It is provided with 2 two type circular holes of connecting plate B bottoms and is used to support the support column with fixed coil winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510369243.7A CN104950035B (en) | 2015-06-29 | 2015-06-29 | A kind of detection method and power frequency excitation detector of Vibration induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510369243.7A CN104950035B (en) | 2015-06-29 | 2015-06-29 | A kind of detection method and power frequency excitation detector of Vibration induction |
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| Publication Number | Publication Date |
|---|---|
| CN104950035A CN104950035A (en) | 2015-09-30 |
| CN104950035B true CN104950035B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510369243.7A Expired - Fee Related CN104950035B (en) | 2015-06-29 | 2015-06-29 | A kind of detection method and power frequency excitation detector of Vibration induction |
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| CN109827655B (en) * | 2019-03-22 | 2020-10-30 | 广州皓醒湾科技有限公司 | Swing amplitude detection device and swing amplitude detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002065A (en) * | 1988-04-20 | 1991-03-26 | Link Performance And Recovery Systems | Vibratory screening or diagnostic systems |
| CN2142016Y (en) * | 1992-11-28 | 1993-09-15 | 邓玉林 | Medical vibratory generator |
| CN2793707Y (en) * | 2005-04-25 | 2006-07-05 | 浙江亚龙教仪有限公司 | Vibration measuring sensor of differential transformer |
| CN103330546A (en) * | 2013-04-15 | 2013-10-02 | 北京工业大学 | Embedment-based digital vibration perception threshold detector |
| CN204705617U (en) * | 2015-06-29 | 2015-10-14 | 中国地质大学（武汉） | A kind of excitation of the power frequency for Vibration induction detector |
-
2015
- 2015-06-29 CN CN201510369243.7A patent/CN104950035B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002065A (en) * | 1988-04-20 | 1991-03-26 | Link Performance And Recovery Systems | Vibratory screening or diagnostic systems |
| CN2142016Y (en) * | 1992-11-28 | 1993-09-15 | 邓玉林 | Medical vibratory generator |
| CN2793707Y (en) * | 2005-04-25 | 2006-07-05 | 浙江亚龙教仪有限公司 | Vibration measuring sensor of differential transformer |
| CN103330546A (en) * | 2013-04-15 | 2013-10-02 | 北京工业大学 | Embedment-based digital vibration perception threshold detector |
| CN204705617U (en) * | 2015-06-29 | 2015-10-14 | 中国地质大学（武汉） | A kind of excitation of the power frequency for Vibration induction detector |
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