KR101515165B1 - Auto-touch test device for digital piano and testing method thereof - Google Patents

Abstract

The auto-keystroke testing method for a digital piano having multiple keystroke switches for each key includes the steps of: automatically touch multiple keys based on a specified keystroke speed and depth; saving the results of multiple keystroke switches when the individual keys were automatically touched; and displaying whether the multiple keystroke switches of each key were switched based on their respective depths of keystroke and displaying the difference between the reference switching time based on individual keystroke speeds and the switching time of the multiple keystroke switches of each key sorted by keystroke speed.

Description

TECHNICAL FIELD [0001] The present invention relates to an automatic tag test apparatus and a test method for a digital piano,

The present invention relates to an automatic pawl test apparatus and a test method for a digital piano, and more particularly, to a technique capable of automatically typing a plurality of keys with a set speed and a setpoint depth, thereby improving a test speed and accuracy.

A digital piano is a musical instrument that generates an electronic sound by operating an electric switch, unlike a conventional piano, which sounds by punching an internal string by physical and mechanical action when a key is pressed. A keyboard musical instrument to be. Because digital piano uses digital sound stored in hardware, it does not need to be coordinated, it can be used in compatibility with other devices, and it is possible to use various types of sound other than the sound of a normal piano and sounds of various instruments such as violins, drums, saxophones Due to its built-in merit, it is used in many fields such as education, learning, practice, and hobbies.

The digital piano is equipped with a key switch at the bottom of each keyboard, and outputs the corresponding sound when switching is detected. In general, the toggle switch electrically connects two contacts. The difference in switching time between the two contacts is determined, and the size of the sound is adjusted according to the difference. For example, since the difference in switching time is small, the key is pressed at a high speed, so that the sound is relatively large compared to the case where the difference in switching time is large. In recent years, technologies using two or more contact points to express sounds corresponding to various target shapes have been used. However, the larger the number of such contacts, the more various types of sound can be expressed, but the number of items to be tested during the manufacturing process increases. In the past, a test expert has carried out a test according to experience while controlling the speed and the depth of the touch, but it is difficult to test numerically and there is a drawback that the test takes a long time.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned technical problems, and it is an object of the present invention to provide a digital piano automatic tag test apparatus and test method capable of automatically testing a plurality of keys with a set speed and a set tag depth, ≪ / RTI >

According to an embodiment of the present invention, there is provided a method of automatically testing a keyboard of a digital piano having a plurality of key switches for each keyboard, comprising the steps of: automatically typing a plurality of keys at a set key velocity and key pad depth; Storing keystroke results of a plurality of key switches of a corresponding key when each key is automatically touched; And displays the difference between the reference switching time according to each of the keystroke speeds and the switching times of the plurality of key switches of each key by arranging the keystroke switches according to the keying speed, The automatic piano test method of the digital piano is provided.

And automatically measuring and displaying the tip pressure of the plurality of keys.

The automatic key setting step is characterized in that the plurality of keys are automatically touched in the order in which the keys are arranged.

The automatic key setting step is characterized in that one or more keys are simultaneously engaged.

According to another embodiment of the present invention, there is provided an automatic tag test apparatus for testing a digital piano having a plurality of key switches for each key, comprising: a mount for mounting a key module of the digital piano; An automatic keystroke disposed on an upper portion of the mounting portion and configured to hit a plurality of keys at a set velocity and a keystroke depth; A conveyance part for conveying the automatic key top part to a position where each key is arranged; And a control unit for storing a switching time point of a plurality of key switches of the keyboard when each keyboard is automatically touched, and setting the key top speed and the key top depth; And displays the difference between the reference switching time according to each of the keystroke speeds and the switching times of the plurality of key switches of each key by arranging the keystroke switches according to the keying speed, The automatic pawl test apparatus comprising:

Wherein the automatic keypad unit comprises: a first finger bar for automatically touching a white key among the plurality of keys; A second finger bar for automatically touching a black key among the plurality of keys; And a pressure sensor for measuring a target pressure of the white key and the black key.

The automatic keypad unit may include at least one of the first finger bar, the second finger bar, and the pressure sensor.

The display unit displays the difference between the reference pressure and the measured pressure of each key word by displaying them.

The control unit may control the automatic keys to be automatically set one by one in the order in which the plurality of keys are arranged, or to control one or more keys to be simultaneously engaged.

When the automatic pawl test device and the test method of the digital piano according to the present invention are applied, the keyboard can be automatically set at a constant set speed, thereby improving the test accuracy and the test speed.

In addition, it is possible to automatically check whether or not switching of a plurality of contacts is performed according to the target depth

In addition, since one or more keys can be tested while simultaneously being hit, the test speed is increased.

As a result, it is possible to statistically test the test data by the target speed and the target depth, and the product development that can reduce the defect rate of the product can be performed based on the statistics.

1 is a schematic view showing an automatic tag test apparatus of a digital piano according to an embodiment of the present invention;
Fig. 2 is a sectional view showing a plurality of key switch portions of the keyboard. Fig.
3 is a flowchart illustrating an automatic tag test method of a digital piano according to an embodiment of the present invention.
4 is a view showing an automatic tag test result;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention.

1 is a block diagram schematically showing an automatic tag test apparatus of a digital piano according to an embodiment of the present invention. The automatic tag test apparatus 1 of the digital piano according to the present embodiment includes only a simple configuration for clearly explaining the technical idea to be proposed.

1, a digital piano automatic tag test apparatus 1 includes a keyboard module 100, a mounting portion 200, an automatic keystone portion 300, a transfer portion 400, a control portion 500, And a display unit 600.

The detailed configuration and main operation of the automatic pawl test apparatus 1 of the digital piano configured as above will be described below.

The mounting portion 200 fixes and fixes the keyboard module 100 of the digital piano. After being tested, the keyboard module 100 is completed with a digital piano in the form of a finished product by attaching an external frame when it is judged to be good. A plurality of key switches are disposed at the lower ends of the respective keys of the keyboard module 100. Accordingly, the switching times of the plurality of key switches are adjusted corresponding to the speed and depth of depression of the key, and the magnitude and the height of the sound are controlled in consideration of the switching time. Therefore, if the number of key switches assigned to each key increases, that is, the number of contacts increases, faster and delicate performance becomes possible. Also, as the number of contacts increases, the phenomenon such as sound is reduced.

The automatic keystroke unit 300 is disposed on the upper part of the stationary part 200 and carries keys in a vertical direction on the upper part of the keyboard module 100 mounted on the stationary part 200. At this time, the automatic keystroke unit 300 sets the key to the keystroke speed and keystroke depth set by the control unit 500. In general, the test process will be carried out at four speeds (40vv, 60vv, 90vv, 127vv). The target speed and the target depth can be set variously according to the design value of the key.

The automatic keystroke unit 300 includes a finger bar 310 that presses the keyboard at a predetermined speed and depth using an oil pressure or an electric motor system. 1 shows one finger bar 310, the number of finger bars can be adjusted according to an embodiment. When two finger bars are provided, a test can be performed by dividing a first finger bar that automatically touches a white key among a plurality of keys, and a second finger bar that automatically touches a black key among a plurality of keys. The automatic keystroke unit 300 may further include a pressure sensor for measuring a key pressure of a white key and a black key. That is, when the keyboard is pressed at a pressure higher than or equal to the reference value during testing, the touch feeling and sound reproduction of the keyboard may be poor, so that the bad keyboard can be selected using the pressure sensor during the test.

The number of such finger bars and pressure sensors may be appropriately adjusted in consideration of the number of keys, the test speed, and the manufacturing cost of the test apparatus. In addition, when the finger bar of the automatic key top unit 300 touches a plurality of keys, the keys may be sequentially hit one by one in the order in which the keys are arranged, or may be alternately arranged in white and black keys. The keystroke pattern of the automatic keypad unit 300 is controlled by the setting of the control unit 500.

The transfer unit 400 transfers the finger bar of the automatic key top unit 300 to the upper part of the keyboard module 100 under the control of the control unit 500. That is, the transfer unit 400 adjusts the position of the automatic key top unit 300 so that the finger bar can be accurately located on each key. The position of the transfer unit 400 can be controlled according to the control of the controller 500. When the automatic keypad test of all the keys is completed, the transfer unit 400 is controlled to return to the initial position.

The control unit 500 may be directly connected to the keyboard module 100, or may be connected through a compatible interface card or equipment. The control unit 500 may be a general computer. The control unit 500 sets the keystroke speed and the keystroke depth when each key of the key module 100 is auto-touched. In addition, at the time of the keystroke operation, the switching points of the plurality of key switches of the corresponding key are stored, and the test data is processed and transmitted to the display unit 600. In addition, the controller 500 may process the data on the measured pressure of the pressure sensor and transmit the processed data to the display unit 600.

The display unit 600 displays whether or not a plurality of touch switches of each keyboard are switched according to the depth of each touch. That is, in the case of a keyboard having three contacts, three contacts must be sequentially switched according to the touch pad depth, and whether or not each contact is switched according to the touch pad depth is displayed in an aligned manner. In addition, the display unit 600 arranges and displays the difference between the reference switching time according to the target speed and the switching times of the plurality of key switches of each key by the target speed. In addition, when the pressure sensor is provided, the display unit 600 can display and sort the difference between the reference pressure and the measured pressure of each key.

2 is a cross-sectional view showing a plurality of key switch portions of the keyboard.

Referring to FIG. 2, contacts 21, 22, and 23 of a plurality of key switches are disposed below each key of the digital piano. When the keyboard is touched, the pressure plates 11, 12, and 13 of the plurality of touch switch units on the upper side sequentially apply pressure to the contact points 21, 22, and 23 at the bottom to perform a switching operation.

The first presser plate 11, the second presser plate 12 and the third presser plate 13 on the upper side are provided with the lower first contact 21, the second contact 22, the third contact 23, As shown in Fig. When the keyboard is pressed to a certain depth, the first switching operation is performed while the first pressure plate 11 and the first contact 21 are in contact with each other. Next, when the key is pressed further deeper, the second switching plate 12 is brought into contact with the second contact 22, and a second switching operation is performed. Next, when the key is pressed further deeper, the third switching operation is performed while the third pressure plate 13 and the third contact 23 are in contact with each other.

The digital piano controls the sound reproduction by the touch tone through the first switching time at which the first switching operation is performed, the second switching time at which the second switching operation is performed, and the third switching time at which the third switching operation is performed.

That is, when the key is touched, considering the time difference? T1 between the first switching time and the second switching time and the difference? T2 between the second switching time and the third switching time, The key module 100 judges the difference (? T1,? T2) of the switching times and regenerates the sound of the corresponding key. For reference, the greater the number of contacts assigned to the keyboard, the more playable the performance technique can be with an acoustic piano. The control unit 500 of the automatic tag test apparatus 1 according to the present invention stores the above-described difference? T1 and? T2 of the switching times, compares the difference with the reference switching time, .

For reference, the touch switch of the present embodiment is configured to perform a switching operation using a physical contact method. However, according to the embodiment, a toggle switch composed of a non-contact type switching method using a solenoid coil or the like may be used.

3 is a flowchart illustrating an automatic tag test method of a digital piano according to an embodiment of the present invention.

Referring to FIG. 3, a description will be made of an automatic tag test method of a digital piano according to an embodiment of the present invention.

A method for testing an automatic piano of a digital piano having a plurality of key switches for each key comprises an automatic key setting step S10, a step S20 of storing the result of the key operation, and a step S30 of displaying the result.

The step of automatically typing (S10) is a process of automatically tying a plurality of keys to the set key speed and key tip depth. In addition, the step S20 of storing the result of tagging is a process of storing switching points of a plurality of key switches of the corresponding key. In addition, the step of displaying the result (S30) may include determining whether or not to switch a plurality of key switches of each key according to each key top depth, a reference switching time corresponding to each key speed, Is displayed by sorting the difference in speed of the target.

The process of automatically typing a plurality of keys (S10) will be described in detail.

First, when testing a plurality of keys, the keystroke speed and keytop depth on which the key is to be played must be set in advance (S11).

Next, when the keystroke speed and keystroke depth are set, a plurality of keys are automatically set to the keystroke speed and keystone set (S12). At this time, a plurality of keys may be sequentially hit one by one in the order in which they are arranged, or white and black keys may be alternately hit. Also, one or more keys may be simultaneously pressed. Also, the pressure can be automatically measured up to the pressure of the key gun, and the pressure measurement result can be displayed.

Next, when sequentially typing a plurality of keys, a process (S13) for determining whether all the keys are knotted is performed. If all the keys are not knotted, the operation is continued (S14, S15) The process of stepping is repeated. If all the keystrokes have been performed, the result stored in the keystroke result storage step S20 is displayed (S30).

Item importance Before improvement Development target Assessment Methods ARM SETS
STROKE
(Velocity: 60) WHITE KEY Primary ON 25 - 4.5 Primary on-measurement 2nd ON - 8.0 Second on measurement BLACK KEY Primary ON 25 - 4.5 Primary on-measurement 3rd ON - 7.0 Second on measurement ARM SETS
VELOCITY
(stroke: 9 mm) WHITE KEY vv: 40 12.5 - 40 GMS Specification vv: 60 12.5 - 60 GMS Specification vv: 90 12.5 - 90 GMS Specification vv: 127 12.5 - 127 GMS Specification Inspection time 1 SET check 20min 5min Time measurement

Table 1 shows the performance when the two-contact type keyboard was tested with four keying speeds and two keying depths.

Referring to Table 1, the settling depth was set to 9 mm, and the settling speed was set at 60 vv, 60 vv, 90 vv, and 127 vv, respectively, It can be seen that the total test time when testing whether the car contacts are switched is 5 minutes. This confirms that the test time is shortened compared to the time of 20 minutes when the skilled person manually tests.

4 is a diagram showing the results of automatic tag test.

Referring to FIG. 4, a graphical representation of the results obtained when all keys are automatically hit with a 60 kV velocity. When the test data is statistically analyzed, it is possible to reduce the defective rate of the product based on the statistical data and to reflect the improvement of the product performance in the future.

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Keyboard module
200:
300:
400:
500:
600:
11, 12, 13:
21, 22, 23: Contact

Claims (9)

A method for testing an automatic piano of a digital piano having a plurality of key switches for each key,
Automatically tying a plurality of keys in a vertical direction from an upper portion to a preset key speed and a key tip depth;
Storing keystroke results of a plurality of key switches of a corresponding key when each key is automatically touched; And
Displays whether or not a plurality of key switches of each keyboard are switched according to a depth of each key, and displays a difference between a reference switching time according to each key speed and a switching point of a plurality of key switches step;
The method comprising the steps of:
The method according to claim 1,
And measuring and displaying the key pressures of the plurality of keys.
The method according to claim 1,
Wherein the automatic step-
Wherein the plurality of keys are automatically touched in the order in which the plurality of keys are arranged.
The method according to claim 1,
Wherein the automatic step-
And a plurality of keys are simultaneously hit on the keyboard.
An automatic tag test apparatus for testing a digital piano having a plurality of key switches for each key,
A mounting part for mounting the keyboard module of the digital piano;
An automatic keystroke disposed on an upper portion of the mounting portion and configured to hit a plurality of keys in a vertical direction at an upper portion with a set velocity and a keystroke depth;
A conveyance part for conveying the automatic key top part to a position where each key is arranged;
A control unit for storing switching points of a plurality of key switches of the keyboard when the keyboard is automatically touched, and setting the target speed and the target depth; And
Displays whether or not a plurality of key switches of each keyboard are switched according to a depth of each key, and displays a difference between a reference switching time according to each key speed and a switching point of a plurality of key switches A display unit;
The automatic pawl test device of the digital piano.
6. The method of claim 5,
The automatic key-
A first finger bar for automatically touching a white key among the plurality of keys;
A second finger bar for automatically touching a black key among the plurality of keys; And
And a pressure sensor for measuring a key pressure of the white key and the black key.
delete 6. The method of claim 5,
The display unit includes:
And displays the difference between the reference pressure and the measured pressure of each key on the display.
6. The method of claim 5,
Wherein,
Wherein the control unit controls the keyboard to be automatically touched one by one in the order in which the plurality of keys are arranged, or controls one or more keys to be simultaneously touched.

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