CN209460197U - Exterior string breaks perils detecting instrument in a kind of urheen - Google Patents
Exterior string breaks perils detecting instrument in a kind of urheen Download PDFInfo
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- CN209460197U CN209460197U CN201822199898.6U CN201822199898U CN209460197U CN 209460197 U CN209460197 U CN 209460197U CN 201822199898 U CN201822199898 U CN 201822199898U CN 209460197 U CN209460197 U CN 209460197U
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- string
- magnetic field
- field strength
- button
- urheen
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Abstract
The utility model discloses exterior string broken string perils detecting instrument in a kind of urheen, pop one's head in including host, the current loop output line connecting with host and magnetic field strength.The utility model belongs to string detecting instrument field, if urheen does not tune up by standard in use, cherishes inadequate, being dismounted for multiple times string, is very heavy excessively high, then the interior string of urheen, exterior string are easy fatigue and snap, once string snaps, the effect or skill that may will affect great performance examine achievement.Exterior string broken string perils detecting instrument in urheen is devised thus, electric current is loaded on string by host by current loop output line, and popped one's head in by magnetic field strength and detect the magnetic field strength of each point on string, the hidden danger in the presence of broken string is illustrated if wherein magnetic field strength is excessive.
Description
Technical field
The utility model relates to musical instrument detection devices, and in particular to exterior string breaks perils detecting instrument in a kind of urheen.
Background technique
String is one of sound source body of urheen.The superiority and inferiority of its quality, directly influences voice effect.String mostly uses greatly
The features such as metallic cord has pulling force good, and sound quality is good, good tone reference and high sensitivity, and it is divided to aluminum string and two kinds of silver string, silver string
Most preferably.Urheen in use, if do not tune up by standard, cherish not enough, being dismounted for multiple times string, it is very heavy it is excessively high, if urheen
Interior string, exterior string are easy fatigue and snap, once string snaps, the effect or skill that may will affect great performance examine achievement.
Existing detection method is then to manually visualize hand to touch detection method, this method seen by testing staff with eyes,
It is touched with hand, fracture of wire that string is found with parade calliper to measure, abrasion, casting erosion chord diameter variation etc..But string is thinner, human eye
Detection be easy to cause visual fatigue and can detect ineffective.Therefore design it is a kind of detection urheen string broken string hidden danger one
Kind equipment becomes a kind of urgent requirement.
Summary of the invention
The technical problem to be solved by the present invention is providing inside and outside a kind of urheen with detection urheen string broken string hidden danger
String broken string perils detecting instrument.
The technical solution of the technical problem to be solved in the present invention is:
Exterior string breaks perils detecting instrument in a kind of urheen, it is characterised in that: including host, the current loop connecting with host
Output line and magnetic field strength probe.The host includes power module, microcontroller, button switch, display.The button is opened
Close includes switching on and shutting down button, starting detection button, self-test button.The output end of the power module by switching on and shutting down button with it is micro-
Controller, display electrical connection, the microcontroller and display are electrically connected.The current loop output line is equipped with two
The end of root, the current loop output line is equipped with crocodile mouth binding clip, wherein a current loop output line and power module
Anode electrical connection, another cathode with the logical starting detection button of current loop output line and power module is electrically connected.Institute
It is attempted by between the positive and negative anodes of power module after stating self-test button and two divider resistance series connection, described two divider resistance connections
Point is electrically connected with microcontroller.The magnetic field strength probe and microcontroller electrical connection.
It preferably, further include shell, the power module, microcontroller are set in the housing portion, the button switch, display
Device is embedded in surface of shell.The power module includes lithium battery and charging jacks, and the lithium battery voltage rating is 5V, capacity
For 5000mAh, the charging jacks are embedded on shell, and the positive and negative anodes of charging jacks and power module are electrically connected.Institute
Switching on and shutting down button, starting detection button are stated as self-lock switch, the self-test button is self-resetting switch.
Preferably, magnetic field strength probe includes shell and is embedded Hall sensor inside the housing.
Preferably, the shell of the magnetic field strength probe is equipped with string groove, and the string groove is arc-shaped.
Preferably, there are five the string groove of the magnetic field strength probe is set, including outside three interior string grooves and two
String groove, the diameter of three interior string grooves are respectively 0.45mm, 0.42mm, 0.29mm, and described two outer strings are recessed
The diameter of slot is respectively 0.27mm, 0.25mm, and the distance of the Hall sensor built in five string groove distances is identical.
Preferably, distance of the bosom of the string groove of the magnetic field strength probe apart from built-in Hall sensors is
1mm。
The utility model has the beneficial effects that:
1, the utility model is a kind of non-destructive testing technology, will not generate damage to string；
2, the utility model has beneficial effect easy to operate, and string is not needed to remove energy in the detection process
Detection, one can be operated；
3, the string of different manufacturers different thicknesses can be detected；
4, detection speed is fast, accuracy is high, can find the broken string hidden danger of string in advance, avoids influencing performing effect or examine
Try achievement.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of embodiment detecting state of the utility model,
Fig. 2 is a kind of schematic diagram of embodiment main body of the utility model,
Fig. 3 is the built-in system and circuit diagram of a kind of embodiment of the utility model,
Fig. 4 is a kind of schematic diagram of the magnetic field strength probe of embodiment of the utility model.
In figure:
310, string groove；112, charging jacks；133, self-test button；132, start detection button；131, switching on and shutting down are pressed
Button；140, display；120, microcontroller；110, power module；300, magnetic field strength is popped one's head in；200, current loop output line；
100, host；
Specific embodiment
To keep the technical solution of the utility model and beneficial effect clearer, below to the embodiments of the present invention
Further explained in detail.
As shown in Figure 1, exterior string broken string perils detecting instrument in a kind of urheen, is returned including host 100, the electric current connecting with host
Road output line 200 and magnetic field strength probe 300.Preferably, in order to protect to host 100, shell can be set.It is wherein electric
Source module 110, microcontroller 120 are set in the housing portion, and button switch, display 140 are embedded in surface of shell.In order to reduce out
The quantity of pass, switching on and shutting down button 131, starting detection button 132 are self-lock switch, and self-test button 133 is self-resetting switch.It is self-locking
On & off operation mode are as follows: be kept on after pressing, restore off-state after just pressing.The work of reset switch
It is the state pressed that presses and holds as mode, switch in an ON state, automatically restores to off-state after stopping pressing.
Host 100 includes power module 110, microcontroller 120, button switch, display 140.
Power module 110 is to provide the device of power supply for the entire decorum, for the ease of carrying and practical, power module 110
For can energy storage electrical storage device, wherein more the most commonly used is batteries.Power module 110 uses lithium battery in the utility model.
Lithium battery is beneficial because it is high with voltage, specific energy is big, have extended cycle life, have a safety feature, self discharge is small, charging is quick etc. to imitate
Fruit and be widely used.In the utility model, lithium battery voltage rating is 5V, capacity 5000mAh.For the ease of giving lithium
Battery charging, it is also necessary to which a charging jacks 112 are set.Charging jacks 112 are embedded on the shell of host 100.Charging jacks
112 it is relatively conventional have circular socket holes and USB jack, as the prior art, details are not described herein.The jack of charging jacks 112
End is embedded on the shell of 100 shell of host, and inside is electrically connected by the positive and negative anodes of conducting wire and lithium battery.
Microcontroller 120 is that microcomputer and relevant functional application circuit form a whole and form one kind
With input/output interface and there is data processing function control module.Microcontroller is by continuous development and optimizes, at
This is lower and lower, and performance is stronger and stronger, this keeps its application ubiquitous, spreads every field.Such as motor control,
Barcode reader/scanner, consumer electronics, game station, phone, HVAC, building safety and access control, Industry Control with
Automation and white domestic appliances washing machine, micro-wave oven etc..Microcontroller 120 is using single-chip microcontroller as main core in the utility model
Piece, and mating relevant voltage-stabilized power supply circuit, A/D conversion module circuit, crystal oscillator module, communication module, driving circuit etc., at this
In utility model, using Hall sensor as magnetic field detection module, therefore the microcontroller 120 of the utility model is additionally provided with one
The constant-current source circuit of a driving Hall element.The application in sensor field of Hall element is highly developed therefore specific
It is not described in detail.Microcontroller 120 is used as a microcomputer, has the function of data processing, can acquire analog quantity
Analog signals are simultaneously switched to digital quantity signal and handled by signal.
For button switch to realize control, button switch includes that switching on and shutting down button 131, starting detection button 132, self-test are pressed
Button 133.Startup and shutdown of the switching on and shutting down button 131 to control microcontroller 120, as shown in figure 3, power module 110 is defeated
Outlet is electrically connected by switching on and shutting down button 131 and microcontroller 120.
Current loop output line 200 is equipped with two, and the electric current to generate host 100 is loaded on string.Electric current returns
The end of road output line 200 is equipped with crocodile mouth binding clip, realizes electrical connection in order to clamp string.A wherein current loop
The anode of output line 200 and power module 110 is electrically connected, another with the logical starting detection button 132 of current loop output line 200
It is electrically connected with the cathode of power module 110.
Preferably, for the ease of the connection of current loop output line 200,200 one end of current loop output line is equipped with crocodile
Mouth binding clip, the other end are equipped with connection-peg, correspondingly, the shell of main body 100 is equipped with jack, as shown in Fig. 2, jack is equipped with two
A, the anode electrical connection of one of them and power module 110, another passes through starting detection button 132 and power module 110
Cathode electrical connection.When needing to detect, the plug of current loop output line 200 is directly inserted into jack.Often
The matched plug and jack seen are banana plug and matching banana jack.
It is attempted by between the positive and negative anodes of power module after self-test button 133 and two divider resistance series connection.Two partial pressure electricity
It hinders tie point and microcontroller 120 is electrically connected.By detect voltage whether be enough to generate sufficiently large electric current determination be
The no condition with detection, if voltage is not big enough, electric current is unable to reach the size for generating stabilizing magnetic field therefore will increase error
It is not easy to detect.
Display of the display 140 to realize data, display and microcontroller 120 are electrically connected.Preferably, display
Using liquid crystal display, or show using lcd display or using lattice display module the number for collecting magnetic field strength
Value.Preferably, for better comparison result, there are three display 140 is set, the maximum value and detection detected is shown respectively
The minimum value and real value arrived, in order to real time contrast, determining has the position of broken string hidden danger.
Magnetic field strength probe 300 and microcontroller 120 are electrically connected.Magnetic field strength probe 300 includes shell and is embedded
Hall sensor inside the housing.In order to keep string constant apart from the distance of magnetic field strength probe 300, magnetic field strength probe
300 shell be equipped with string groove 310, string groove 310 be it is arc-shaped, during detection, string is fastened on string
Inside groove 310, and slides or pump from top to bottom along string.
Preferably, in order to keep the type of the string of detection more, the string groove 310 of magnetic field strength probe 300 is equipped with five
It is a, including three interior string grooves and two exterior string line grooves.The diameter of three interior string grooves be respectively 0.45mm,
0.42mm, 0.29mm.The diameter of two exterior string line grooves is respectively 0.27mm, 0.25mm, built in five string groove distances
The distance of Hall sensor is identical, and distance is maintained at 1mm, to guarantee measurement accuracy.
The operation principle of the present invention is that: lead to direct current to string, utilizes Hall sensor detecting distance string same distance
Magnetic field size on straight line, if string be it is isometrical and internal without flaw, the magnetic field around string is uniform, i.e. distance
Magnetic field on string same distance straight line is equally big, if having flaw inside a certain section of larger or certain of abrasion of string,
Then the magnetic field at this must have distortion, and abrasion or flaw are bigger, and the distortion in magnetic field is bigger.
Magnetic field strength formula: wherein, μ 0=4 π × 10^-7N/A^2 is space permeability to B=μ 0I/2 π r.R is that the point arrives
Straight wire distance.
Detection method are as follows:
Step 1, the top and bottom that two current loop output lines 200 are folded in string respectively, the straight of 4.2~5V
Galvanic electricity is led on the string of metal material.In the utility model, the conducting wire of current loop output line 200 uses root 1.5mm2It is more
Stock copper wire, binding clip use crocodile mouth binding clip.The voltage of the lithium battery of power module can just be examined before 4.2~5V
It surveys.By measurement, the internal resistance of lithium battery is 0.3 ohms, and the resistance of common metal string is 0.2~0.4 Ω in the market,
The lower limit of the electric current then generated on string is 4.2/ (0.4+0.3) A=6A, and the upper limit of electric current is=5/ (0.2+0.3) A=
10A.Therefore the electric current of 6~10A generates more apparent magnetic field, therefore convenient for the measurement of magnetic field strength probe 300.
Step 2 starts switch machine button 131 first, makes the starting operation of microcontroller 120.Then self-test button is pressed
133, in order to show self-detection result, indicator light can be embedded on shell, indicator light uses light emitting diode, light emitting diode and
Microcontroller 120 is electrically connected.If host internal circuit is normal and cell voltage is higher than 4.2V, the normal indicator light of self-test " G "
Green is lighted, if self-test does not pass through, malfunction indicator lamp " R " lights red.Host is equipped with 3 liquid crystal displays, shows respectively
Show maximum value of magnetic field, minimum value and the real value at the same distance of single string, compares in order to compare.
Step 3 presses starting detection button 132, and the string groove 310 of magnetic field strength probe 300 is fastened on string,
And slide from top to bottom, and real time value is compared by real-time display number, microcontroller 120 with the numerical value detected before,
Maximum value is updated if the maximum value before numerical value is greater than, and minimum value is updated if if it is less than minimum value, in the detection process,
Magnetic field strength can be stablized within the scope of one, if it is greater than or less than this range, then illustrate the hidden danger in the presence of broken string.
After the completion of step 4, detection, starting detection button 132 is closed, current loop output line 200 is removed.
In conclusion the preferred embodiment of only the utility model, is not used to limit the scope of the utility model,
Through the above description, relevant staff can carry out without departing from the scope of the technological thought of the present invention' completely
Various changes and amendments.The technical scope of the utility model is not limited to the contents of the specification, and Fan Yiben is practical
Shape described in novel claimed range, construction, feature and the so-called equivalent changes and modifications of spirit, should all include practical with this
In novel scope of the claims.
Claims (6)
1. exterior string broken string perils detecting instrument in a kind of urheen, it is characterised in that:
(300) are popped one's head in including host (100), the current loop output line (200) connecting with host and magnetic field strength,
The host (100) includes power module (110), microcontroller (120), button switch, display (140),
The button switch includes switching on and shutting down button (131), starts detection button (132), self-test button (133),
The output end of the power module (110) passes through switching on and shutting down button (131) and microcontroller (120), display (140) electricity
Gas connection, the microcontroller (120) and display (140) are electrically connected,
The current loop output line (200) is equipped with two, and the end of the current loop output line (200) connects equipped with crocodile mouth
Wire clamp, wherein the anode of a current loop output line (200) and power module (110) is electrically connected, it is another with current loop
The cathode of logical starting detection button (132) of output line (200) and power module (110) is electrically connected,
It is attempted by between the positive and negative anodes of power module after the self-test button (133) and two divider resistance series connection, it is described two
Divider resistance tie point and microcontroller (120) are electrically connected,
The magnetic field strength probe (300) and microcontroller (120) electrical connection.
2. exterior string broken string perils detecting instrument in a kind of urheen according to claim 1, it is characterised in that:
It further include shell, the power module (110), microcontroller (120) are set in the housing portion, the button switch, display
Device (140) is embedded in surface of shell,
The power module (110) includes lithium battery and charging jacks (112), and the lithium battery voltage rating is 5V, and capacity is
5000mAh, the charging jacks (112) are embedded on shell, and the positive and negative anodes of charging jacks and power module (110) are electrical
Connection,
The switching on and shutting down button (131), starting detection button (132) are self-lock switch, and the self-test button (133) is Self-resetting
Switch.
3. exterior string broken string perils detecting instrument in a kind of urheen according to claim 1, it is characterised in that:
Magnetic field strength probe (300) includes shell and is embedded Hall sensor inside the housing.
4. exterior string broken string perils detecting instrument in a kind of urheen according to claim 1, it is characterised in that:
The shell of the magnetic field strength probe (300) is equipped with string groove (310), and the string groove (310) is arc-shaped.
5. exterior string broken string perils detecting instrument in a kind of urheen according to claim 4, it is characterised in that:
There are five the string groove (310) of the magnetic field strength probe (300) is set, including three interior string grooves and two exterior strings
Line groove, the diameter of three interior string grooves are respectively 0.45mm, 0.42mm, 0.29mm, described two exterior string line grooves
Diameter be respectively 0.27mm, 0.25mm, the distance of the Hall sensor built in five string groove distances is identical.
6. exterior string broken string perils detecting instrument in a kind of urheen according to claim 1, it is characterised in that:
Distance of the bosom of the string groove (310) of magnetic field strength probe (300) apart from built-in Hall sensors be
1mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199898.6U CN209460197U (en) | 2018-12-26 | 2018-12-26 | Exterior string breaks perils detecting instrument in a kind of urheen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199898.6U CN209460197U (en) | 2018-12-26 | 2018-12-26 | Exterior string breaks perils detecting instrument in a kind of urheen |
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| Publication Number | Publication Date |
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| CN209460197U true CN209460197U (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822199898.6U Expired - Fee Related CN209460197U (en) | 2018-12-26 | 2018-12-26 | Exterior string breaks perils detecting instrument in a kind of urheen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229898A (en) * | 2020-10-09 | 2021-01-15 | 苏州由田申甲软件科技有限公司 | Yarn signal detection device |
-
2018
- 2018-12-26 CN CN201822199898.6U patent/CN209460197U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229898A (en) * | 2020-10-09 | 2021-01-15 | 苏州由田申甲软件科技有限公司 | Yarn signal detection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191001 Termination date: 20201226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |