JP2010204369A - Device, and method for testing keyboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyboard testing device for testing a key load value and a key stroke at the same time, when each of a plurality of key switches provided in a key is switched on. <P>SOLUTION: Position information H0 for showing a probe position, when a probe contacts a key face and a load value detected by a pressure sensor 28 is changed, is obtained. When the probe presses the key, and for example, four key switches SW1 to SW4 are provided in the key, testing data are generated at timing when they are sequentially switched on. Every time the testing data is generated, four sets of measurement data (position information H1, a load value L1) to (position information H4, a load value L4) of a pair of position information for showing the probe position, and the load values at that time, are obtained, and then, position information H5 for showing a probe position when the pressure sensor 28 outputs a full stroke load value, is obtained. Based on each of the obtained load values L1 to L4, and key strokes (H1-H0, H2-H0, H3-H0, H4-H0 and H5-H0), it is determined whether it is good or not. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a keyboard inspection device, a keyboard inspection method, and a program for inspecting a keyboard of an electronic keyboard instrument.

  In an electronic keyboard instrument such as a keyboard instrument, a plurality of key switches are provided for each key constituting the keyboard, and the key pressing speed ( And a keyboard device that generates a switch signal for controlling the tone of the generated musical tone. This type of keyboard device is disclosed in Patent Document 1, for example.

Conventionally, in the process of inspecting such a keyboard device, in addition to the static characteristic inspection for determining whether or not the static load applied to the key and the key stroke (key displacement amount) that settles according to the static load fall within a specified range, In many cases, a dynamic characteristic test is performed in which a key is actually pressed at a constant key pressing speed, and the velocity obtained thereby is judged as good or bad.

Japanese Patent No. 3543845

By the way, the conventional keyboard inspection apparatus has a problem that it is impossible to inspect simultaneously the load value and the key stroke when each of the plurality of key switches arranged on each key of the keyboard is turned on.
The present invention has been made in view of such circumstances, and it is possible to simultaneously inspect a load value when each of a plurality of key switches arranged on each key of a keyboard is turned on and its key stroke. An object of the present invention is to provide a keyboard inspection device, a keyboard inspection method, and a program.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a position detecting means for detecting a position of a pressing / releasing portion that moves downward with respect to the key surface and presses a key on the keyboard, Load detecting means for detecting a load value applied to the key, and when the load detecting means detects a load change due to key surface contact of the key pressing section, the position of the key pressing section detected by the position detecting means is set as an initial position. The initial position acquisition means for acquiring and the position of the key pressing part detected by the position detection means each time a plurality of key switches provided on the key are sequentially turned on according to the key pressing of the key pressing part, A stroke position acquisition unit that acquires the stroke position at which the switch is turned on, and a load detection unit that detects each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression unit. The load value is the load at which the key switch is turned on. Each of the keys obtained by subtracting the initial position acquired by the initial position acquisition means from the stroke positions acquired by the load position acquisition means and the stroke position acquisition means, and the plurality of key switches are turned on. It is characterized by comprising pass / fail judgment means for judging pass / fail of a key stroke corresponding to a switch and a load value acquired by the load value acquisition means and each key switch being turned on.

  In the invention according to claim 2, which is dependent on claim 1, the key switch which is turned on at least every time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression unit. Further comprising: test data generating means for generating test data representing the test data; transmitting means for transmitting the test data generated by the test data generating means; and receiving means for receiving the test data transmitted by the transmitting means, The stroke position acquisition means uses the position of the key pressing portion detected by the position detection means as the stroke position at which the key switch represented by the received inspection data is turned on when the receiving means receives the inspection data. The load acquiring means represents the load value detected by the load detecting means when the receiving means receives the inspection data, by the received inspection data. Wherein the key switch is obtained as a load value which is turned.

In the invention according to claim 3, which is dependent on claim 2, the inspection data generating means generates a note-on event indicating a key press and a key pressed each time each key switch is sequentially turned on by the key press. The inspection data in the MIDI format is generated, which is composed of a note number representing the switch number and a switch number representing the key switch in the on state.

In the invention according to claim 4 that is dependent on claim 1, when the load detecting means detects a full stroke load value, the position of the key pressing portion detected by the position detecting means is acquired as a full stroke position. Full stroke position acquisition means is further provided, wherein the pass / fail determination means is obtained by subtracting the initial position acquired by the initial position acquisition means from the full stroke position acquired by the full stroke position acquisition means. Is also determined.

According to the fifth aspect of the present invention, a position detecting process for detecting the position of the pressing / separating portion that moves downward with respect to the key surface and presses the key of the keyboard, and a load value applied to the key pressing portion are detected. A load detection process, and an initial position acquisition process for acquiring, as an initial position, the position of the key pressing part detected by the position detection process when a load change due to the key surface contact of the key pressing part is detected in the load detection process; Each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression part, the position of the key depression part detected by the position detection process is determined as the stroke position at which the key switch is turned on. Each time a plurality of key switches provided on the key are sequentially turned on in accordance with the key depression of the key depression unit, the load value detected in the load detection process is calculated by the key switch. Get load value to be acquired as the load value to be turned on And a key stroke corresponding to each key switch obtained by subtracting the initial position obtained in the initial position obtaining process from each stroke position obtained by the stroke position obtaining process and turning on each of the plurality of key switches. And a pass / fail determination process for determining pass / fail with load values acquired in the load value acquisition process and each key switch being turned on.

In the invention according to claim 6, a position detecting step for detecting a position of a pushing / separating portion that moves downward relative to the key surface and pushes the key of the keyboard, and a load value applied to the key pushing portion. A load detecting step for detecting the key position, and an initial position for acquiring the position of the key pressing portion detected by the position detecting step when the load change due to the key surface contact of the key pressing portion is detected in the load detecting step. Each time a plurality of key switches provided in the key are sequentially turned on according to the key depression of the key depression unit, the key switch is turned on by the position detection step. Each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression unit, the load value detected in the load detection step is obtained as a stroke position to be obtained as a stroke position. ,key A load value acquisition step acquired as a load value at which the switch is turned on, and an initial position portion acquired at the initial position acquisition step from each stroke position at which the plurality of key switches are turned on, acquired by the stroke position acquisition step. And a pass / fail judgment step for judging pass / fail of each key switch corresponding to each key switch and a load value acquired in the load value acquisition step and each key switch being turned on. .

  In the present invention, it is possible to simultaneously inspect the load value and the key stroke when each of the plurality of key switches disposed on each key of the keyboard is turned on.

It is a block diagram which shows the structure of the keyboard test | inspection apparatus 200 by one Embodiment, and the musical instrument main body 100 used as test | inspection object. 4 is a side view showing the structure of an inspection jig 300. FIG. It is a figure for demonstrating the moving direction of the horizontal sliding part. It is a figure for demonstrating the moving direction of the vertical sliding part. 4 is a flowchart showing an operation of mode selection processing executed in the musical instrument main body 100. 5 is a flowchart showing an operation of inspection mode processing executed in the musical instrument main body 100. 4 is a flowchart showing an operation of a main routine executed in the keyboard inspection apparatus 200. 4 is a flowchart showing an operation of a keyboard inspection process executed in the keyboard inspection apparatus 200. It is a figure which shows the structure of the positional information obtained by a keyboard test | inspection process, a load value, and test | inspection data. 6 is a graph for explaining an operation of a keyboard inspection process executed in the keyboard inspection apparatus 200. 4 is a flowchart showing an operation of a line flow control process executed in the keyboard inspection apparatus 200.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. Constitution
FIG. 1 is a block diagram showing a configuration of a keyboard inspection device 200 according to an embodiment and a configuration of an instrument body (electronic keyboard instrument) 100 to be inspected. Hereinafter, the configuration of the instrument main body 100 and the configuration of the keyboard inspection apparatus 200 will be described.

(1) Configuration of Instrument Main Body 100 In FIG. 1, the CPU 10 has two operation modes of “inspection mode” and “normal mode”, and controls each part of the instrument in an operation mode selected by a user operation. When the inspection mode is selected, the CPU 10 executes an inspection mode process (described later). On the other hand, when the normal mode is selected, for example, a timbre set according to a timbre switch operation of the operation unit 13. A normal mode process is executed to instruct the musical tone generator 16 to generate and mute the musical tone of the musical instrument according to the key press / release operation of the keyboard 14.

The ROM 11 stores various programs executed by the CPU 10, control data, and the like. The various programs mentioned here include a mode selection process and an inspection mode process which will be described later. The RAM 12 temporarily stores various register / flag data. The operation unit 13 includes, for example, a power switch for powering on / off the power supply, an inspection mode switch that is operated when an inspection mode is selected, and various switches (such as a timbre switch) that are used in a normal mode. A switch event corresponding to the switch type is generated. A switch event generated by the operation unit 13 is captured by the CPU 10.

  The keyboard 14 outputs key switch information corresponding to the key pressing operation in the inspection mode. This key switch information is converted into inspection data by the CPU 10. The inspection data is MIDI format data that is generated each time a plurality of key switches arranged on the pressed key are turned on, and represents a note-on event indicating the key press and a key pressed. It consists of a note number and a switch number representing the key switch that is turned on.

Specifically, for example, when the inspection data is “9nxx01”, the first “9 (hexadecimal display)” is a note-on event, the next “n” is a sound channel, and “xx” is The note number (pitch) of the key that was pressed, and “01” represents the switch number of the key switch that was turned on.

  In accordance with the display control signal supplied from the CPU 10, the display unit 15 displays the setting contents (tone color, effect type, etc.) relating to the generated musical tone and the operation state under the normal mode, while the keyboard inspection is being performed under the inspection mode. The content for notifying the user of the existence is displayed on the screen. The musical tone generator 16 forms and outputs musical sounds according to musical tone commands (sounding or muting instructions) generated by the CPU 10 based on performance information output from the keyboard 14. The interface unit 17 exchanges MIDI data (serial data) under the control of the CPU 10. The interface unit 17 sends MIDI-type inspection data generated by the CPU 10 to the keyboard inspection device 200 side in the inspection mode.

(2) Configuration of Keyboard Inspection Device 200 A keyboard for simultaneously checking the load value and the key stroke when each of the plurality of key switches is turned on for each key of the keyboard 14 provided in the musical instrument main body (electronic keyboard instrument) 100. The inspection apparatus 200 includes a CPU 20, a ROM 21, a RAM 22, an operation unit 23, a display unit 24, a line control unit 25, an inspection jig control unit 26, an interface unit 27, and a pressure sensor 28.

The CPU 20 controls each part of the apparatus in response to a switch event supplied from the operation unit 23, and the characteristic processing operation according to the gist of the present invention will be described in detail later. The ROM 21 includes a data area and a program area. The data area of the ROM 21 is used, for example, for inspection data for setting the position and moving speed of the horizontal sliding portion 302 and the vertical sliding portion 304 constituting the inspection jig 300 (described later), and for determining the quality of the inspection result. Determination data including a load upper limit value / lower limit value and a stroke upper limit value / lower limit value are stored. In the program area of the ROM 21, there are stored a keyboard inspection process (described later) executed by the CPU 20 and a line flow control process (described later) program for controlling the conveyance of the inspected product (instrument main body 100) on the inspection line. Is done.

The RAM 22 includes an inspection data area for storing data measured by various inspections in addition to a work area for temporarily storing various register / flag data. The operation unit 23 includes a power switch for powering on / off the apparatus power supply, a test start switch for instructing test start, a test end switch for instructing test end, and the like, and generates a switch event corresponding to the type of switch to be operated. . A switch event generated by the operation unit 23 is captured by the CPU 20. In accordance with the display control signal supplied from the CPU 20, the display unit 24 displays, for example, the examination progress status and the examination result (quality determination result) on the screen.

In accordance with an instruction from the CPU 20, the line control unit 25 generates a control signal for instructing conveyance / stop of the instrument main body 100 to a conveyance device (not shown) constituting the inspection line. The inspection jig control unit 26 drives and controls a horizontal sliding part 302 and a vertical sliding part 304 that constitute an inspection jig 300 (described later) in accordance with an instruction from the CPU 20. Further, the inspection jig control unit 26 converts the encoder output generated by the vertical sliding unit 304 into position information representing the tip position of the probe 305 and supplies the position information to the CPU 20. The interface unit 27 takes in the inspection data output from the instrument main body 100 under the control of the CPU 20 and stores it in the inspection data area of the RAM 22.

The pressure sensor 28 is a pressure-sensitive element (for example, a pressure-sensitive conductive elastomer) disposed at the tip of a probe 305 (described later) that presses the key of the keyboard 14 in the instrument body 100, and an output of the pressure-sensitive element. Is composed of an A / D converter or the like that converts pressure into pressure data. The pressure sensor 28 generates pressure data obtained by detecting a load when the probe 305 is lowered and pressed, that is, a load from when the probe 305 contacts the key surface until reaching the full stroke position. This pressure data is stored in the inspection data area of the RAM 22 under the control of the CPU 20.

(3) Structure of Inspection Jig 300 Next, a schematic structure of the inspection jig 300 that is driven and controlled by the inspection jig control unit 26 of the keyboard inspection apparatus 200 will be described with reference to FIGS. FIG. 2 is a side view showing a schematic structure of the inspection jig 300. As shown in this figure, the inspection jig 300 is provided with a moving part 301, a horizontal sliding part 302, an inspection table 303, a vertical sliding part 304, and the pressure sensitive element (pressure sensor 28) at the tip. The probe 305 is configured.

The moving part 301 is an L-shaped member formed from a horizontal frame and a vertical frame. The horizontal sliding part 302 is disposed on the horizontal frame, and the vertical sliding part 304 is disposed on the vertical frame. The The horizontal sliding part 302 slides and moves the entire moving part 301 in the horizontal direction in accordance with the drive control signal supplied from the inspection jig control part 26 described above. Specifically, as shown in FIG. 3, the horizontal sliding portion 302 moves to the next key position every time the probe 305 presses and releases the 14 keys of the instrument body 100 on the examination table 303. 301 is moved in the horizontal direction.

The vertical sliding unit 304 slides the probe 305 in the vertical direction (up and down direction) in accordance with the drive control signal supplied from the above-described inspection jig control unit 26, and the keyboard of the instrument main body 100 on the inspection table 303. Press and release 14 keys. Specifically, as shown in FIG. 4, the vertical sliding portion 304 moves downward, whereby the pressure-sensitive element (pressure sensor 28) provided at the tip of the probe 305 becomes a key of the keyboard 14 of the instrument body 100. Press the key.

Further, the vertical sliding portion 304 has an encoder for measuring the sliding movement amount. When the vertical sliding portion 304 slides in the vertical direction (up and down direction) according to the drive control of the inspection jig control portion 26, the vertical sliding portion 304 An encoder output representing the tip position is generated and supplied to the inspection jig controller 26. As described above, the inspection jig control unit 26 converts the acquired encoder output into position information representing the tip position of the probe 305 and supplies it to the CPU 20.

In this embodiment, in order to simplify the description of the operation to be described later, it is configured to move to the next key position for each single key pressed / released key. However, in practice, a plurality of keys (for example, one octave key) are used. The keys of the area) are simultaneously pressed and released. The musical instrument main body 100 is placed on the inspection table 303 by a transport device (not shown).

B. Action
Next, after describing each operation of the mode selection process and the inspection mode process executed in the CPU 10 of the musical instrument main body 100 with reference to FIGS. 5 to 6, the keyboard inspection apparatus 200 will be described with reference to FIGS. 7 to 11. Each operation of the keyboard inspection process and the line flow control process executed by the CPU 20 will be described.

(1) Operation of Musical Instrument Main Body 100 FIG. 5 is a flowchart showing the operation of mode selection processing executed by the CPU 10 of the musical instrument main body 100. FIG. 4 is a flowchart showing the operation of the inspection mode process executed by the CPU 10 of the musical instrument main body 100.

When the power of the musical instrument main body 100 is turned on, the CPU 10 proceeds to step SA1 of the mode selection process shown in FIG. 5, and determines whether or not the power is turned on in a state where the inspection mode switch is pressed. If the power is turned on without pressing the inspection mode switch, the determination result in step SA1 is “NO”, the process proceeds to step SA2, and the performance information generated in response to the pressing / releasing key operation (performance operation). A normal mode process for forming a musical tone based on the above is executed.

  On the other hand, when the power is turned on while the inspection mode switch is pressed, the determination result in step SA1 is “YES”, and the inspection mode process is executed via step SA3. When the inspection mode process is executed, the CPU 10 proceeds to step SB1 shown in FIG. 6 and executes initialization to initialize each part of the instrument main body 100. Next, in step SB2, an initial value “1” is set to the pointer n. The pointer is a value representing the switch number of the key switch provided for each key of the keyboard 14.

  Subsequently, in step SB3, the process waits until the key switch SW (n) having the switch number designated by the pointer n is turned on. That is, in the first pass, the process waits until the key switch with the switch number “1” is turned on in the key to be pressed. When the key switch with the switch number “1” is turned on, the determination result is “YES”, and the process proceeds to Step SB4. In step SB4, MIDI-type inspection data indicating that the key switch with the switch number “1” is turned on by pressing the key is generated and transmitted from the interface unit 17 to the keyboard inspection device 200 side.

  In this way, transmission of MIDI-type inspection data composed of a note-on event representing a key depression, a note number representing a key depressed, and a switch number representing a key switch in an on state has been transmitted to the keyboard inspection apparatus 200 side. In step SB5, the pointer n indicating the switch number of the key switch is incremented and incremented, and in the subsequent step SB6, it is determined whether or not there is a key switch designated by the incremented pointer n. If there is a key switch designated by the stepped pointer n, the determination result in step SB6 is “YES”, and the process returns to step SB3.

  Thereafter, by repeating steps SB3 to SB6 described above, inspection data is generated and transmitted to the keyboard inspection apparatus 200 side as the key switches are sequentially turned on. When there is no key switch designated by the stepped pointer n, that is, when all the key switches are turned on and the transmission of the corresponding inspection data is completed, the determination result at step SB6 is “NO”. Proceeding to SB7, it is determined whether or not the inspection mode end switch has been turned on. If the inspection mode end switch is not turned on and the inspection is continued for the next key, the determination result is “NO”, and the process returns to step SB2. On the other hand, when the inspection mode end switch is turned on to end the inspection, the determination result in the above step SB7 becomes “YES”, and this processing is finished.

  Thus, on the musical instrument main body 100 side, when the power is turned on in a state where the inspection mode switch is pressed, the inspection mode process is executed. In the inspection mode process, each time the key switch disposed on the pressed key is sequentially turned on, the note-on event indicating the pressed key, the note number indicating the pressed key, and the on state are set. Inspection data in the MIDI format composed of switch numbers representing the key switches is generated and transmitted to the keyboard inspection apparatus 200 side.

(2) Operation of keyboard inspection device 200 <Operation of main routine>
In the keyboard inspection apparatus 200, when the power is turned on, the CPU 20 executes the main routine shown in FIG. 7 and proceeds to step SC1, performs initialization for initializing each part of the apparatus, and then proceeds to step SC2. In step SC2, as will be described later, a keyboard inspection process is performed in which the load value and the key stroke when the inspection data generated by the musical instrument main body 100 is received in response to the key depression are acquired to determine whether or not pass / fail.

Subsequently, in step SC3, line flow control processing for instructing the transport device to transport / stop the instrument main body 100 based on the pass / fail determination result (whether or not the NG flag is set) obtained in the keyboard inspection process in step SC2 is executed. To do. Then, after other processing is executed, the processing is returned to step SC2. Thereafter, the above steps SC2 to SC4 are repeated until the power of the keyboard inspection apparatus 200 is turned off.

<Operation of keyboard inspection process>
When this process is executed through step SC2 of the main routine described above, in the keyboard inspection apparatus 200, the CPU 20 executes the keyboard inspection process shown in FIG. 8 and proceeds to step SD1, for example, the probe of the inspection jig 300 Initialization is performed to initialize each part of the apparatus, such as positioning 305 (see FIG. 2) to face the key to be pressed. Subsequently, in step SD2, an instruction to lower the probe 305 is given to the inspection jig controller 26. Thereby, the vertical sliding part 304 slides and moves the probe 305 downward according to the drive control signal supplied from the inspection jig control part 26.

  Next, in step SD3, as the probe 305 is lowered, the loading of the position information generated by the inspection jig control unit 26 and the load value generated by the pressure sensor 28 is started. Then, it is assumed that in the process in which the probe 305 continues to descend, the load value output from the pressure sensor 28 changes due to contact with the key surface of the key to be pressed. Then, in step SD4, position information H0 (initial position) indicating the tip position of the probe 305 when a load change due to key surface contact occurs is acquired and stored in the inspection data area of the RAM 22.

  Thereafter, the probe 305 continues to descend even after contacting the key surface and presses the key. On the musical instrument main body 100 side, as described above, each time the key switch disposed on the depressed key is sequentially turned on, the note-on event representing the depressed key, the note number representing the depressed key, and the ON The inspection data in the MIDI format composed of the switch number representing the key switch in the state is generated and sent to the keyboard inspection apparatus 200.

In the present embodiment, four key switches SW1 to SW4 are provided for each key of the keyboard 14 of the musical instrument main body 100. Therefore, each time the key switches SW1 to SW4 are sequentially turned on by pressing the key, the inspection data “9n × 01”, “9n × 02”, “9n × 03”, “9n × 04” are generated. It is sent to the keyboard inspection device 200.

  In step SD5, first, the position information H1 indicating the tip position of the probe 305 when the inspection data “9n × 01” is received from the instrument body 100 side and the load value L1 are acquired, and then the inspection data “9n × 02” is obtained. The position information H2 and the load value L2 representing the tip position of the probe 305 at the time of receiving "are acquired. Furthermore, the position information H3 indicating the tip position of the probe 305 when the inspection data “9n × 03” is received and the load value L3 are acquired, and then the probe 305 when the inspection data “9n × 04” is received. After obtaining the position information H4 and the load value L4 representing the tip position, position information H1 to H4, the load values L1 to L4 and the inspection data “9nxx01” to “9nxxx, as shown in FIG. 04 ”is stored in the inspection data area of the RAM 22 in association with each other.

  Thus, after all of the key switches SW1 to SW4 of the key to be pressed by the lowering of the probe 305 are turned on, the tip of the probe 305 reaches the full stroke of the key, whereby the pressure sensor 28 indicates the full stroke load value. Suppose that it outputs. Then, in step SD6, position information H5 indicating the tip position of the probe 305 when the full stroke load value is reached is acquired and stored in the inspection data area of the RAM 22.

  Next, in step SD7, an instruction to raise the probe 305 is given to the inspection jig controller 26. Accordingly, the vertical sliding portion 304 is slid upward until the probe 305 returns to the origin in accordance with the drive control signal supplied from the inspection jig control portion 26. Thereafter, the process proceeds to step SD8, and a series of data acquired in step SD5, that is, load values L1 to L4 and key strokes (H1-H0, H2-H0, H3 when the key switches SW1 to SW4 are turned on, respectively). -H0, H4-H0, H5-H0) are determined to be within the upper and lower limit prescribed ranges stored in the ROM 21.

That is, as illustrated in FIG. 10A, the load acquired in step SD5 is within the range defined by the load upper limit value / lower limit value defined for each of the key switches SW1 to SW4 (x axis). It is determined whether or not the values L1 to L4 can be accommodated. Further, as shown in FIG. 5B, the strokes are defined by stroke upper limit values / lower limit values respectively defined for the key switches SW1 to SW4 (x axis). It is determined whether or not each key stroke (H1-H0, H2-H0, H3-H0, H4-H0, H5-H0) falls within the range.

The key stroke H1-H0 is the distance from the initial position represented by the position information H0 to the position where the key switch SW1 is turned on, and the key stroke H2-H0 is the position where the key switch SW2 is turned on from the initial position. The key stroke H3-H0 is the distance from the initial position to the position where the key switch SW3 is turned on, and the key stroke H4-H0 is the distance from the initial position to the position where the key switch SW4 is turned on. The key strokes H5-H0 represent the distances from the initial position to the full stroke position, respectively.

  If it falls within the upper and lower limit stipulated range, the determination result in step SD8 is “YES”, the process proceeds to step SD9, and the load value and the key stroke when the key switches SW1 to SW4 are turned on are appropriate. An OK display indicating the presence is displayed on the display unit 23 on the screen. On the other hand, if there is data that deviates from the upper / lower limit specified range, the determination result in step SD8 is “NO”, and the process proceeds to step SD10. In step SD10, an NG display of the inappropriate data item is displayed on the display 23, and an NG flag is set for the inappropriate data item.

Subsequently, in step SD11, it is determined whether or not the inspection end switch has been turned on. If the inspection end switch is not turned on, the determination result is “NO”, and the process proceeds to step SD12 to instruct the inspection jig controller 26 to move the probe 305 to the next key position. As a result, the horizontal sliding portion 302 moves the probe 305 to the next key position in accordance with the drive control signal supplied from the inspection jig control portion 26. Thereafter, the processing is returned to the above-described step SD2, and the above-described series of checking operations are executed for the next key.

In this way, when all the keys on the keyboard 14 of the musical instrument main body 100 have been inspected and the inspection end switch is turned on, the determination result in step SD11 is “YES”, and the process proceeds to step SD13, for example, acquisition. An end process such as transferring and storing the series of inspection data to a non-volatile recording medium (not shown) is executed, and this process ends.

<Operation of line flow control processing>
When this process is executed via step SC3 (see FIG. 7) of the main routine described above, the CPU 20 proceeds to step SE1 shown in FIG. 11, and the presence / absence of the NG flag set, that is, step SD10 of the keyboard inspection process described above. In (see FIG. 8), it is determined whether or not the NG flag is set in the data item (load value L1 to L4 / position information H1 to H4) that deviates from the upper and lower limit specified range. If the NG flag is not set, the determination result is “NO”, and the flow proceeds to step SE2.

  In step SE2, the transport apparatus (not shown) is instructed to transport the musical instrument main body 100, and the process ends. In this case, the instrument main body 100 that has passed the inspection is unloaded from the inspection table 303, while the instrument main body 100 that is the next inspection product is newly loaded into the inspection table 303. On the other hand, when the NG flag is set, the determination result in step SE1 is “YES”, and the process proceeds to step SE3 to instruct the conveyance device (not shown) to stop the conveyance of the musical instrument main body 100. Finish the process. In this case, in the musical instrument main body 100 that has failed the inspection, the data item for which the NG flag is set is adjusted and then re-inspected.

  As described above, in this embodiment, when the probe 305 descends and comes into contact with the key surface of the key to be depressed, and the load value detected by the pressure sensor 28 changes, the probe 305 comes into contact with the key surface. Position information H0 representing the position of the probe 305 is acquired. When the probe 305 is further lowered to press the key, the instrument main body 100 side each time a key switch disposed on the pressed key is sequentially turned on, a note-on event indicating the key press, The test data in the MIDI format is generated which is composed of a note number representing a key that has been locked and a switch number representing a key switch that has been turned on. For example, when four key switches SW1 to SW4 are provided in the key, the inspection data is generated at the timing when they are sequentially turned on.

  Each time such inspection data is received, four sets of measurement data (position information H1, load value L1) to (position information H4, load value L4) are paired with position information indicating the position of the probe 305 and the load value at that time. get. Then, when the tip of the probe 305 reaches the full stroke of the key and the pressure sensor 28 outputs a full stroke load value, position information H5 indicating the tip position of the probe 305 is acquired. After this, whether the acquired load values L1 to L4 and the key strokes (H1-H0, H2-H0, H3-H0, H4-H0, H5-H0) are within the preset upper and lower limit stipulated ranges. Therefore, it is possible to simultaneously inspect the load value and the key stroke when a plurality of key switches arranged on each key of the keyboard are turned on.

100 musical instrument body 10 CPU
11 ROM
12 RAM
DESCRIPTION OF SYMBOLS 13 Operation part 14 Keyboard 15 Display part 16 Music sound generation part 17 Interface part 200 Keyboard test | inspection apparatus 20 CPU
21 ROM
22 RAM
DESCRIPTION OF SYMBOLS 23 Operation part 24 Display part 25 Line control part 26 Inspection jig control part 27 Interface part 28 Pressure sensor 300 Inspection jig 301 Moving part 302 Horizontal sliding part 303 Inspection stand 304 Vertical sliding part 305 Probe

Claims (6)

Position detecting means for detecting a position of a pressing / separating portion that moves downward with respect to the key surface and presses a key on the keyboard;
Load detecting means for detecting a load value applied to the key pressing portion;
Initial position acquisition means for acquiring, as an initial position, the position of the key depression portion detected by the position detection means when the load detection means detects a load change due to the key surface contact of the key depression portion;
Each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression part, the position of the key depression part detected by the position detecting means is set as a stroke position at which the key switch is turned on. A stroke position acquisition means to acquire;
A load for obtaining the load value detected by the load detecting means as a load value for turning on the key switch each time a plurality of key switches provided on the key are sequentially turned on in response to the key depression of the key depression unit. A value acquisition means;
The key stroke corresponding to each key switch obtained by subtracting the initial position obtained by the initial position obtaining means from each stroke position obtained by the stroke position obtaining means and turning on each of the plurality of key switches, and the load A keyboard inspection device comprising: pass / fail judgment means for judging pass / fail with a load value acquired by a value acquisition means and each key switch being turned on. Inspection data generating means for generating inspection data representing at least an on-state key switch each time a plurality of key switches provided on the key are sequentially turned on in response to key depression of the key depression unit;
Transmitting means for transmitting inspection data generated by the inspection data generating means;
Receiving means for receiving inspection data transmitted by the transmitting means;
The stroke position acquisition means indicates the position of the key pressing portion detected by the position detection means when the receiving means receives inspection data, and the stroke position at which the key switch represented by the received inspection data is turned on. Get as
The load acquisition means acquires the load value detected by the load detection means as the load value at which the key switch represented by the received inspection data is turned on when the receiving means receives the inspection data. The keyboard inspection device according to claim 1.   The inspection data generating means is configured such that each time a key switch is sequentially turned on by a key press, a note-on event indicating a key press, a note number indicating a key pressed, and a switch number indicating a key switch in an on state 3. The keyboard inspection device according to claim 2, wherein the inspection data is generated in MIDI format. When the load detection means detects a full stroke load value, it further comprises full stroke position acquisition means for acquiring the position of the key pressing portion detected by the position detection means as a full stroke position,
The pass / fail judgment means also judges pass / fail of a key full stroke obtained by subtracting the initial position acquired by the initial position acquisition means from the full stroke position acquired by the full stroke position acquisition means. Item 1. A keyboard inspection device according to Item 1. A position detection process for detecting the position of the press-and-release part that moves downward relative to the key surface and presses the key on the keyboard;
A load detection process for detecting a load value applied to the key pressing portion;
An initial position acquisition process for acquiring, as an initial position, the position of the key depression part detected by the position detection process when a load change due to the key surface contact of the key depression part is detected in the load detection process;
Each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression part, the position of the key depression part detected by the position detection process is set as a stroke position at which the key switch is turned on. The stroke position acquisition process to be acquired;
A load for acquiring a load value detected in the load detection process as a load value for turning on the key switch each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression unit. Value acquisition process,
The key stroke corresponding to each key switch obtained by subtracting the initial position obtained in the initial position obtaining process from each stroke position obtained by the stroke position obtaining process and turning on each of the plurality of key switches, and the load A keyboard inspection method comprising: a pass / fail judgment process for judging pass / fail with a load value acquired in a value acquisition process and each key switch is turned on. On the computer,
A position detecting step for detecting a position of a pressing / releasing portion that moves downward relative to the key surface and presses a key on the keyboard;
A load detection step for detecting a load value applied to the key pressing portion;
An initial position acquisition step of acquiring, as an initial position, the position of the key depression portion detected by the position detection step when a load change due to the key surface contact of the key depression portion is detected in the load detection step;
Each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression part, the position of the key depression part detected by the position detection step is set as a stroke position at which the key switch is turned on. A stroke position acquisition step to be acquired;
A load for acquiring the load value detected in the load detection step as a load value for turning on the key switch each time a plurality of key switches provided on the key are sequentially turned on according to the key depression of the key depression unit. A value acquisition step;
The key stroke corresponding to each key switch obtained by subtracting the initial position obtained in the initial position obtaining step from each stroke position obtained by the stroke position obtaining step and turning on each of the plurality of key switches, and the load A program for performing a pass / fail judgment step for judging pass / fail with a load value acquired at a value acquisition step and each key switch is turned on.

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