KR102236565B1 - Digital piano with ultraviolet sterilization function - Google Patents

Abstract

Provided is a digital piano to which an ultraviolet sterilization function is applied, comprising: a human body detection sensor detecting an approach distance of a user; a cover detection sensor detecting a closed state or an opened state of a keyboard cover; an ultraviolet sterilization unit disposed on an inner surface of the keyboard cover to irradiate ultraviolet rays to a keyboard; and an operation control unit controlling so as to activate an operation of the ultraviolet sterilization unit when the user is not positioned within a predetermined safety distance in accordance with a detection result of the human body detection sensor and the keyboard cover is maintained in the closed state in accordance with the detection result of the cover detection sensor. Therefore, ultraviolet sterilization can be effectively carried out by considering the keyboard usage time.

Description

Digital piano with ultraviolet sterilization function

The present invention relates to a digital piano, and more particularly, to a digital piano to which the ultraviolet sterilization function is applied.

Since digital musical instruments use digital sounds stored in hardware, there is no need to tune them and can be used interchangeably with other devices.

In particular, digital pianos are widely used in fields such as education, learning, practice, and hobbies as they contain various types of sounds different from the sounds of ordinary pianos (analog pianos) and sounds of various instruments such as violins, drums, and saxophones. .

A digital piano is an instrument that generates an electronic sound by the operation of an electric switch, unlike a general piano that produces sound by hitting the internal strings by physical and mechanical action when a key is pressed. A keyboard instrument that reproduces the sound almost similar to that of a normal piano. to be.

Since the keyboard of a digital piano is keyed directly by the user using a finger, the possibility of bacterial propagation is very high due to sweat and foreign substances generated from the user's finger. In particular, in the case of a digital piano that is used for public use, if it is not managed, the possibility of bacterial or virus contamination is very high.

In order to solve this problem, a device for disinfecting the keyboard with ultraviolet rays has been proposed, but since a passive sterilization operation is performed simply by a timer, there is a limitation in that effective sterilization cannot be achieved when the key is heavily contaminated.

KR 10-2015-0011984 A

The present invention has been proposed to solve the above technical problems, and provides a digital piano to which an ultraviolet sterilization function is applied to automatically adjust the ultraviolet sterilization time for a keyboard in consideration of the playing time.

In addition, there is provided a digital piano to which an ultraviolet sterilization function is applied that performs a sterilization operation when a user is not located within a predetermined safety distance as a result of detection by a human body detection sensor.

According to an embodiment of the present invention for solving the above problem, an operation control unit for controlling an ultraviolet ray sterilization operation for a keyboard in consideration of a playing time and a user's approach distance, and an operation control unit for irradiating ultraviolet light to the keyboard according to the control of the operation control unit. A digital piano to which an ultraviolet sterilization function including an ultraviolet sterilization unit is applied is provided.

In addition, the operation control unit included in the present invention is characterized in that it calculates the playing time in consideration of the time from the first press of the keyboard to the last press of the keyboard, and increases the UV sterilization time in proportion to the playing time.

In addition, the operation control unit included in an embodiment of the present invention is characterized in that the ultraviolet sterilization time is automatically adjusted based on the total number of key strokes.

In addition, according to another embodiment of the present invention, a human body detection sensor that detects a user's approach distance, a cover detection sensor that detects a closed state or an open state of the key cover, and ultraviolet rays are disposed on the inner side of the key cover. The operation of controlling to activate the operation of the UV sterilization unit when the user is not located within a predetermined safe distance as a result of the detection of the ultraviolet ray sterilizing unit and the human body detection sensor and the key cover remains closed as a result of the detection of the cover detection sensor. A digital piano to which an ultraviolet sterilization function including a control unit is applied is provided.

In addition, the operation control unit included in another embodiment of the present invention is characterized in that the ultraviolet sterilization time is automatically adjusted based on the total number of key strokes.

The digital piano to which the ultraviolet sterilization function is applied according to an embodiment of the present invention can automatically adjust the ultraviolet sterilization time for the keyboard in consideration of the playing time, so that ultraviolet sterilization can be effectively performed in consideration of the playing time, that is, the use time of the keyboard. .

In addition, since the sterilization operation is performed when the user is not located within a predetermined safe distance as a result of detection by the human body detection sensor, it is possible to block risk factors of a user whose risk judgment power is low, such as a child.

1 is a block diagram of a digital piano 1 to which an ultraviolet sterilization function is applied according to an embodiment of the present invention
2 is an exemplary diagram of a digital piano 1 to which an ultraviolet sterilization function is applied
3 is an exemplary view in which a human body detection sensor 100 is mounted on a digital piano 1 to which an ultraviolet sterilization function is applied
4 is an exemplary view in which a cover detection sensor 200 is mounted on a digital piano 1 to which an ultraviolet sterilization function is applied
5 is an exemplary view of the ultraviolet sterilization unit 300 of the digital piano 1 to which the ultraviolet sterilization function is applied
6 is another exemplary view of the ultraviolet sterilization unit 300

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings in order to describe in detail enough to enable a person of ordinary skill in the art to easily implement the technical idea of the present invention.

1 is a configuration diagram of a digital piano 1 to which an ultraviolet sterilization function is applied according to an embodiment of the present invention, and FIG. 2 is an exemplary diagram of a digital piano 1 to which an ultraviolet sterilization function is applied.

The digital piano 1 to which the ultraviolet sterilization function according to the present embodiment is applied includes only a simple configuration for clearly explaining the technical idea to be proposed.

1 and 2, the digital piano 1 to which the ultraviolet sterilization function is applied includes a human body detection sensor 100, a cover detection sensor 200, an ultraviolet sterilization unit 300, and an operation control unit 400. It is composed.

The main operation of the digital piano 1 to which the ultraviolet sterilization function configured as described above is applied is as follows.

The human body detection sensor 100 detects a user's approach distance. The human body detection sensor 100 is provided with at least one ultrasonic sensor, a laser sensor, and a Doppler sensor to detect whether a user is positioned around the keyboard 10. The human body detection sensor 100 is provided to detect the presence or absence of a person within a 1m or 0.5m radius, and turn off the sterilization function when there is a person around it, thereby preventing body damage due to ultraviolet light.

The cover detection sensor 200 detects the closed state or the open state of the key cover and then transmits the detection state to the operation control unit 400.

The cover detection sensor 200 is provided to detect a condition for safely proceeding the ultraviolet sterilization operation and a condition for determining the playing time, that is, the time the user used the keyboard 10.

The ultraviolet sterilization unit 300 is disposed on the inner surface of the key cover to irradiate the keyboard 10 with ultraviolet rays. The ultraviolet sterilization unit 300 is composed of a plurality of ultraviolet light emitting devices (UV LEDs 311), and according to an embodiment, a fixed ultraviolet sterilization unit and a mobile ultraviolet sterilization unit may be selectively or simultaneously provided.

When the user is not located within a predetermined safe distance as a result of detection by the human body detection sensor 100 and the keyboard cover 20 remains closed as a result of detection by the cover detection sensor 200, the ultraviolet sterilization unit ( 300) is controlled to activate the operation.

That is, the operation control unit 400 controls the ultraviolet sterilization operation for the keyboard in consideration of the playing time-the keyboard use time-and the user's approach distance. A specific example of this will be described later.

3 is an exemplary view in which the human body detection sensor 100 is mounted on the digital piano 1 to which the ultraviolet sterilization function is applied.

Referring to FIG. 3, the human body detection sensor 100 basically has a plurality of ultrasonic sensors mounted on the lower part of the keyboard, and detects the presence or absence of a user based on the detection result of the ultrasonic sensor.

In this case, the human body detection sensor 100 may additionally include a plurality of Doppler sensors, and the Doppler sensor detects a user's movement using the Doppler effect. That is, the Doppler sensor accurately and reliably detects minute movements of a target regardless of external environments such as temperature, humidity, and dust by using an ultra-high frequency signal in the 10 GHz band. In addition, since the Doppler sensor is configured to adjust the sensing distance by adjusting the frequency or the output power, it can be set to detect a user of a predetermined radius from the digital piano.

As an example, the first Doppler sensor is disposed at the leftmost part of the keyboard, and the second Doppler sensor is disposed at the far right part of the keyboard to create a redundant detection area in a direction toward the central area of the keyboard, that is, in a direction facing each other. Can be arranged so that That is, only when the first Doppler sensor and the second Doppler sensor detect the user at the same time, the operation control unit 400 can determine that the user exists.

Basically, since the Doppler sensor can detect motion, it can compensate for the case where the ultrasonic sensor erroneously senses an object such as a chair, and the motion control unit 400 determines that the user exists only when a predetermined movement occurs. User detection reliability can be improved.

4 is an exemplary view in which a cover detection sensor 200 is mounted on a digital piano 1 to which an ultraviolet sterilization function is applied.

Referring to FIG. 4, as an embodiment, the cover sensor 200 may include a magnetic 221 and a hall sensor 231.

That is, the magnetics 221 are disposed on the left and right sides of the keyboard cover 20, and the Hall sensor 231 is provided in the leftmost and rightmost regions of the keyboard-fixed to the sidearms-by the magnetic 221 It is possible to determine the closed state or the open state of the key cover 20 through whether the Hall sensor 231 is activated.

5 is an exemplary view of the ultraviolet sterilization unit 300 of the digital piano 1 to which the ultraviolet sterilization function is applied.

Referring to FIG. 5, as an embodiment, the ultraviolet sterilization unit 300 includes a reflector 310 disposed on the inner surface of the keyboard cover 20, and a plurality of ultraviolet light emitting devices (UV LEDs, 311). I can.

The plurality of ultraviolet light emitting devices (UV LEDs) 311 are disposed on a main frame surrounding the keyboard 10 and disposed at the same height as the keyboard 10 or at a position lower than the keyboard 10. The plurality of ultraviolet light emitting devices (UV LEDs) 311 are arranged to irradiate ultraviolet rays in an upper direction or a diagonal direction.

When the ultraviolet light emitting element (UV LED, 311) irradiates ultraviolet rays when the key cover 20 is kept closed, the ultraviolet rays are reflected by the reflector 310 disposed on the inner surface of the key cover 20 to the keyboard. It may be configured to uniformly irradiate ultraviolet rays.

6 is another exemplary view of the ultraviolet sterilization unit 300.

Referring to FIG. 6, the ultraviolet sterilization unit 300 includes a movable light emitting unit 320, a first rail 331, a second rail 332, and a motor 340.

The movable light emitting unit 320 includes a plurality of ultraviolet light emitting devices (UV LEDs) 311 and a connection part 312 connecting the first rail 331 and the second rail 332 while fixing them.

That is, the first rail 331, the second rail 332, and the motor 340 are disposed on the inner surface of the keyboard cover 20, and the connection part 312 of the movable light emitting part 320 is the first rail 331 And connected to the second rail 332.

That is, as the mobile light emitting unit 320 moves under the control of the motor 340, it is positioned above the specific keyboard 10 to irradiate ultraviolet rays. The motor 340 may be a BLDC motor controlled by a PWM control signal.

The ultraviolet sterilization unit 300 of FIG. 6 is a method of sterilizing the entire keyboard while the LED bar rides the pole board rail and scans the keyboard in a slide manner after mounting the rail on the inner surface of the key cover 20. When a bolt (NUT) line is inserted into the rail and the LED bar hole 312 and the rail is rotated by the motor 340, the movable light emitting unit 320 is designed to move. For rail operation control, a servo motor or a stepping motor capable of PWM control can be used.

On the other hand, the digital piano 1 to which the ultraviolet sterilization function is applied may further include a temperature and humidity sensor, and the operation control unit 400 can control the ultraviolet sterilization operation by using the sensed values of the temperature and humidity sensor as one additional condition. have.

For example, if the keyboard usage time is less than 1 hour and the room temperature is less than 30 degrees, the sterilization operation is not performed, but if the indoor temperature exceeds 30 degrees, the sterilization operation can be performed. In addition, when the keyboard usage time is less than 1 hour, the room temperature is less than 30 degrees and the humidity is more than 80%, the sterilization operation can be performed.

For reference, measurement of the playing time (keyboard usage time) can be selected from various options according to the user's settings.

As an example of the option, there are the 1st option of the last key press condition starting from the first key press, and the 2nd option of power off after the first press after the power is on, and the 3rd option (Preset setting) is the number of note on/off ( Check the number of key strokes) and sterilize for 2 minutes if the note on is less than 2000, 2 minutes 30 seconds for 2001~3500, 3 minutes for 3501~5000, and 3 minutes and 30 seconds for more than that. That is, by calculating the number of hitting keys between the time when the key cover 20 is closed after the piano is booted, the UV module operation time/intensity in proportion to the key key value may be automatically set.

For reference, the operation control unit 400 may reflect the keystroke strength (intensity) to the number of keystrokes of the keyboard 10. That is, a key keyed with a predetermined strength (intensity) or more may be reflected in 1.1 to 1.9 times instead of once.

In addition, the operation control unit 400 calculates the playing time in consideration of the time from the first press of the keyboard 10 to the last press of the keyboard 10 after the key cover 20 is opened, and calculates the UV sterilization time and the UV intensity in proportion to the playing time. Can be increased. The last pressing may be defined as when a predetermined time elapses after the key is pressed, or when the key cover 20 is closed.

In addition, the operation control unit 400 may automatically adjust the UV sterilization time based on the total number of strokes of the keyboard 10. That is, since the operation control unit 400 grasps not only the number of individual keystrokes of each key, but also the total number of keystrokes, as the number of keystrokes increases, the irradiation time can be increased while increasing the UV intensity. In this case, if the keyboard 10 is configured to be irradiated with ultraviolet rays individually, the irradiation time may be increased while increasing the intensity of ultraviolet rays independently for each key.

For reference, as illustrated in FIG. 2, a plurality of ultraviolet light emitting elements (UV LEDs, 311) are arranged on the inner side of the key cover 20 to correspond to each key 10, and use of each key 10 UV sterilization may be performed for each keyboard 10 in consideration of information and usage time.

At this time, since there are a plurality of ultraviolet light emitting devices (UV LEDs, 311) allocated to each keyboard 10, the intensity of ultraviolet irradiation may be individually adjusted in consideration of the use time. That is, since the operation control unit 400 acquires key key information and use time information for each key 10, the intensity of the ultraviolet rays irradiated to each key 10, the ultraviolet irradiation time, and the presence or absence of ultraviolet irradiation are controlled by using this.

That is, in the digital piano 1 to which the ultraviolet sterilization function is applied as described above, when the player (user) closes the keyboard (sensor detection) after playing/practicing the piano, the operation control unit 400 of the piano detects the human body (sensor detection). After that, when there is no user, UV rays are shot on the keyboard for a set period of time (UV LED intensity control, time control, ambient room temperature value, control function grant, preset (default setting) value) to proceed with the sterilization operation.

On the other hand, the digital piano 1 to which the ultraviolet sterilization function is applied has an automatic keying function in which each key is keyed while moving up and down.

The operation control unit 400 may automatically proceed with the intensive sterilization mode based on the cumulative amount used for each key 10 by utilizing this automatic keying function.

In the intensive sterilization mode, it is most preferable to proceed through the ultraviolet sterilization unit 300 of FIG. 6, and the keys to be sterilized in the intensive sterilization mode are automatically selected in consideration of the cumulative amount of use of each key, temperature and humidity when used.

The keyboard selected in the intensive sterilization mode is automatically keyed for a predetermined period of time to maintain a descending state, and the keyboard is irradiated with ultraviolet rays during the first ultraviolet sterilization time. Thereafter, the selected key rises, and the two adjacent keys of the selected key are automatically keyed to maintain the falling state, and the selected key is irradiated with ultraviolet rays during the second ultraviolet sterilization time. In this case, the movable light emitting unit 320 may further include a compressed air injection device to operate to automatically inject compressed air when the selected key and its neighboring keys are in the ascending and descending operation. In addition, the disinfectant cartridge may be attached to the compressed air injector. When the disinfectant cartridge is attached, the compressed air injector injects the disinfectant solution together with the compressed air to the selected keyboard. At this time, it is preferable to use a component having a sterilizing effect such as alcohol as a disinfectant and having a strong volatility.

For reference, when the disinfectant cartridge is used, the operation control unit 400 automatically ventilates the key cover 20 by automatically opening the key cover 20 for a predetermined period of time based on the cumulative number of uses of the compressed air injection device. An operation of discharging internal air to the outside through the provided ventilation device is performed. Under the operating conditions of the automatic ventilation and ventilation system, the UV sterilization operation is temporarily suspended.

In addition, after the intensive sterilization mode is in progress, when the user first uses the digital piano 1, the operation control unit 400 repeatedly automatically key only the keys in which the intensive sterilization mode was performed with a predetermined melody to indicate that the operation has been performed. can do.

At this time, when the user proceeds with the keying operation with the preset first keyboard arrangement-Notification of dissatisfaction with the sterilization mode-The operation control unit 400 is a condition that is more strengthened than before when the next intensive sterilization mode is executed-Ultraviolet intensity, irradiation time, compressed air Sterilization is carried out through the number of times the injection device is used.

In addition, when the user performs the keying operation with the preset second keyboard arrangement-Notification of satisfaction of the sterilization mode-The operation control unit 400 has the same conditions when the following intensive sterilization mode is executed-Ultraviolet intensity, irradiation time, and compressed air injection device are used. The sterilization proceeds through the number of times.

In addition, the operation control unit 400 may determine the replacement timing of the disinfectant cartridge as the number of injections and transmit a replacement notification to a control application of the portable terminal of the user who has been authenticated in advance.

The digital piano to which the ultraviolet sterilization function is applied according to an embodiment of the present invention can automatically adjust the ultraviolet sterilization time for the keyboard in consideration of the playing time, so that ultraviolet sterilization can be effectively performed in consideration of the playing time, that is, the use time of the keyboard. .

In addition, since the sterilization operation is performed when the user is not located within a predetermined safe distance as a result of detection by the human body detection sensor, it is possible to block risk factors of a user whose risk judgment power is low, such as a child.

As such, those skilled in the art to which the present invention pertains will be able to understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the embodiments described above are illustrative in all respects and should be understood as non-limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

10: keyboard
20: keyboard cover
100: human body detection sensor
200: cover detection sensor
221: magnetic
231: Hall sensor
310: reflector
300: UV sterilization unit
311: UV light emitting device
312: connection
320: movable light emitting unit
331: first rail
332: second rail
340: motor
400: motion control unit

Claims (5)

delete delete delete A human body detection sensor that detects a user's approach distance;
A cover detection sensor that detects a closed state or an open state of the key cover;
An ultraviolet sterilization unit disposed on the inner surface of the key cover to irradiate ultraviolet rays onto the keyboard; And
An operation control unit configured to activate an operation of the ultraviolet ray sterilizing unit when the user is not located within a predetermined safety distance as a result of the detection of the human body sensor and the key cover remains closed as a result of the detection of the cover detection sensor; Including,
The human body detection sensor may include a first Doppler sensor disposed on the left side of the keyboard; And
A second Doppler sensor disposed on the right side of the keyboard; wherein the first and second Doppler sensors are disposed so as to generate an overlap detection area in a central direction of the keyboard, and the operation control unit includes the first and second Doppler sensors. The second Doppler sensor detects the user at the same time and determines that the user is located when a predetermined movement occurs,
In the operation control unit, in automatically adjusting the UV sterilization time based on the total number of keystrokes of the keyboard, the intensity of the UV rays and the UV irradiation time for each key are individually adjusted based on the number of individual keystrokes for each key, and a predetermined A digital piano with an ultraviolet sterilization function, characterized in that the number of keystrokes is added to reflect the keystrokes over the intensity. delete

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