JP2000066610A - Interactive display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the operation of a display device by moving the interactive display device upward and downward according to user's height so as to position its screen in front of his/her face. SOLUTION: By detecting the height of a user 2 by a user detecting part 3 provided on the front face and by driving an elevating device 4, to bring a screen in front of the user's face. The user detecting part 3 comprises a plurality of infrared sensors or ultrasonic sensors with vertical directivity having directivity in the vertical direction. Or, it is also possible to detect the height of the user 2 from a rotation angle of a rotation mirror when far infrared radiation from the user 2 reflected by the square-pole rotation mirror is incident on an infrared light receiving part via a light receiving rectifying plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interactive display device, and more particularly, to an interactive display device which raises and lowers the position of a screen in accordance with the height of an operator to facilitate operation.

[0002]

2. Description of the Related Art Some interactive display devices provide guidance by touching a fingertip or the like in accordance with a screen display and switching to a corresponding screen display. However, the position (height) of the screen becomes a problem when the operator has a large difference in height from an adult to a child or a person in a wheelchair. In order to solve this, for example, there is a method of providing a touch screen at two places, high and low. However, this method is almost the same as that of two sets of devices, and is expensive.

[0003]

SUMMARY OF THE INVENTION In view of the foregoing, the present invention provides an interactive display device with an elevating function to raise and lower the device in accordance with the height of the operator. An object is to enable operation while facing a screen.

[0004]

In order to achieve the above object, in the interactive display device according to the present invention, an elevating device is attached to an interactive display device for displaying guidance or the like in response to a touch operation on a screen. A human detection unit having directivity is provided on the front surface, and the elevation device is driven based on a signal from the human detection unit to adjust the height of the screen.

The human detecting section detects the height of a human using a plurality of sensors having directivity in the vertical direction.

[0006] The human detecting section uses an infrared sensor for detecting far infrared rays from a human.

Alternatively, a rotating mirror for reflecting far infrared rays from a person may be provided in front of the infrared sensor, and the rotating mirror may scan the detection range and detect the height of the person by reflected light.

In this case, a light-receiving / shaping plate is provided at the subsequent stage of the rotating mirror to improve the directivity of human detection by the infrared sensor.

The rotation mirror may be driven by a motor with a hall sensor, and the rotation angle of the rotation mirror may be identified based on a signal from the hall sensor to detect the height of a person.

Alternatively, a heat source that emits far-infrared rays is provided at a position corresponding to the scanning start point of the rotating mirror, and far-infrared rays from this heat source are detected by an infrared sensor to be used as a reference for detecting the height of a person. . This heat source is composed of one that emits far infrared rays at a higher level than far infrared rays emitted by humans,
Make it easy to distinguish from far infrared rays from humans.

An ultrasonic sensor which emits an ultrasonic signal and detects a person by a reflected wave may be used for the person detecting section.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 is a schematic diagram of one embodiment of an interactive display device according to the present invention. In FIG. 1, reference numeral 1 denotes an interactive display device, which is made thin using a PDP (plasma display panel) or the like, has a touch panel on a screen, and switches to a corresponding screen by a touch operation of the person 2 to display guidance and the like. . Reference numeral 3 denotes a person detecting unit which detects the height of the person 2 by a sensor having directivity in the vertical direction. The human detection unit 3 detects far infrared rays emitted by a human body using a pyroelectric infrared sensor, or emits an ultrasonic signal, and
The height of the person 2 is detected by the reflected wave. Reference numeral 4 denotes a lifting device, which is an interactive display device 1 based on a signal from the human detection unit 3.
Is raised or lowered so that the screen is in front of the person 2 even for a tall person as shown in (a), a child or a wheelchair as shown in (b).

The human detecting section 3 includes, for example, a plurality of sensors having directivity in the vertical direction, and detects the height of the human 2 based on which of the sensors detects far infrared rays or ultrasonic waves. . Alternatively, as shown in FIG. 2, the rotating mirror 11 is rotated to reflect far-infrared rays from a person, is incident on the infrared light receiving unit 13 via the light receiving shaping plate 12, is converted into an electric signal, and is amplified by the amplifying unit 14. The signal is amplified, input to the microcomputer 16, converted into a value representing the height of the person, and the lifting device 3 is driven by this signal so that the screen of the interactive display device is in front of the person. As shown in the perspective view, the light-receiving shaping plate 12 is formed by forming a thin slit in a light-impermeable plate, and only light that has passed through the slit enters the infrared light receiving unit 13 and the directivity in the vertical direction is sharp. And the detection accuracy is improved. The rotating mirror 11 (mirror of the surface of the quadratic prism) reflects an area in which one mirror surface reflects far-infrared rays from a human detection range (for example, a range of h2 in FIG. 2) toward the infrared receiving unit 13. By continuously rotating, the height of the person's back is detected continuously (linearly).
The rotating mirror 11 is driven by a motor equipped with a Hall sensor, counts pulses output when a Hall element attached to the rotor cuts the magnetic field lines of a fixed magnetic field (such as a permanent magnet), and counts the rotation angle of the rotating mirror 11. Is determined.

Alternatively, a heat source 17 for emitting far-infrared light is provided at a position (h1) corresponding to the scanning start point of the rotating mirror 11, and far-infrared light from the heat source 17 reflected by the rotating mirror 11 is transmitted through the light receiving / shaping plate 12. The rotation position of the rotating mirror 11 when the light is incident on the infrared light receiving unit 13 may be set to the scanning start point. In this case, a heat source 17 that emits far infrared rays at a higher level than far infrared rays emitted by a person is used. And
The signal from the infrared light receiving unit 13 is input to the heat source signal separating unit 18, the signal from the heat source 17 is extracted by slicing or the like, and input to the microcomputer 16, and the microcomputer 16 receives the signal from the heat source 17 as shown in FIG. The time Ts from the signal to the light receiving signal from the person is measured using the signal from the oscillating unit 15 and is converted into a value representing the height of the person, and the lifting device 4 is driven by this signal, and the interactive display is performed. Make sure the screen of the device is in front of people.

[0015]

As described above, according to the interactive display device of the present invention, the height of the operator is detected by far-infrared rays emitted by a person or by the reflected wave of an ultrasonic signal.
Since the interactive display device is raised and lowered so that the screen comes in front of the operator, the operation of the screen is easy for tall and low people, and in the case of an unmanned guidance device, etc. Especially effective for

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an embodiment of an interactive display device according to the present invention.

FIG. 2 is a block diagram of a main part of an example of a human detection unit.

FIG. 3 is an example of a signal waveform of an infrared light receiving unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Interactive display device 2 people (operator) 3 person detection part 4 Elevating device 11 Rotating mirror 12 Light receiving shaping plate 13 Infrared light receiving part 14 Amplifying part 15 Oscillating part 16 Microcomputer 17 Heat source (Far infrared light emitting part) 18 Heat source signal separating part

Claims (9)

[Claims] 1. An interactive display device for displaying guidance or the like in response to a touch operation on a screen, wherein the interactive display device is provided with an elevating device, and a directional human detection unit is provided on a front surface of the interactive display device. An interactive display device that drives the lifting device based on a signal from a unit to adjust the height of a screen. 2. The interactive display device according to claim 1, wherein the human detection unit detects the height of a human using a plurality of sensors having directivity in a vertical direction. 3. The human detection unit according to claim 1, wherein the human detection unit includes an infrared sensor that detects far-infrared rays from a human.
An interactive display device as described. 4. The human detection unit is provided with a rotating mirror that reflects far infrared rays from a person in front of the infrared sensor, scans a detection range with the rotating mirror, and detects the height of the person by reflected light. 4. The interactive display device according to claim 1, wherein the interactive display device comprises: 5. The interactive display device according to claim 4, wherein a light receiving and shaping plate is provided at a subsequent stage of said rotating mirror to improve directivity of human detection by said infrared sensor. 6. The dialogue according to claim 4, wherein the rotating mirror is driven by a motor with a hall sensor, a rotation angle of the rotating mirror is identified based on a signal from the hall sensor, and a height of a person is detected. Type display device. 7. A heat source that emits far-infrared light at a position corresponding to the scanning start point of the rotating mirror, and the far-infrared light from the heat source is detected by the infrared sensor and used as a reference for detecting the height of a person. The interactive display device according to claim 4 or 5, wherein 8. The interactive system according to claim 7, wherein said heat source emits far-infrared rays at a higher level than far-infrared rays emitted by a person, so that it can be easily distinguished from far-infrared rays from a person. Display device. 9. The interactive display device according to claim 1, wherein the person detection unit uses an ultrasonic sensor that emits an ultrasonic signal and detects a person by a reflected wave.