KR-20260063197-A - Power-saving display system using a non-contact switch

Abstract

The present invention relates to a power-saving display system using a non-contact switch, wherein a lifting means is formed on the inner side wall of an elevator, and a display and a PIR sensor system are formed on the lifting means, wherein the PIR sensor system comprises: a detection unit that detects the presence or absence of a human body in a moving or stationary state by detecting a change in the amount of infrared rays generated from a human body; a control unit that receives a detection signal from the detection unit and determines the presence or absence of a human body in a moving or stationary state, and transmits a control signal to operate the display when a human body is detected and to stop the operation of the display when a human body is not detected; and a display unit that receives a control signal from the control unit and displays the display screen or stops the display screen display, and wherein a non-contact switch is formed on the outer side wall of the elevator, the non-contact switch is turned ON and the operation of the display is turned ON when a human finger approaches within a certain distance (2 cm) from the surface of the non-contact switch.

Inventors

• 남상모

Assignees

• 주식회사 동신

Dates

Publication Date

20260507

Application Date

20241030

Claims (3)

1. A lifting means is formed on the inner side wall of the elevator, and a display and a PIR sensor system are formed on the lifting means, wherein the PIR sensor system comprises: a detection unit that detects the presence or absence of a human body in a moving or stationary state by detecting a change in the amount of infrared rays emitted from a human body; a control unit that receives a detection signal from the detection unit, determines the presence or absence of a human body in a moving or stationary state, and transmits a control signal to operate the display when a human body is detected and to stop the operation of the display when a human body is not detected; and a display unit that receives a control signal from the control unit and displays the display screen or stops the display screen. A power-saving display system using a non-contact switch, characterized in that a non-contact switch is formed on the outer side wall of the elevator and the non-contact switch is turned ON and the operation of the display is turned ON when a human finger approaches within a certain distance (2 cm) from the surface of the non-contact switch.
2. In paragraph 1, The above-described controller is an analog-to-digital converter (ADC) that performs analog-to-digital conversion (ADC), and is characterized by determining that the contactless switch is ON when the ADC voltage is maintained above a threshold voltage for a predetermined period of time or longer. A power-saving display system using a contactless switch.
3. In paragraph 1, A power-saving display system using a non-contact switch, characterized in that a standard elevator button and a wheelchair elevator button are formed on the outer side wall of the elevator, and the non-contact switch is formed on one side of each of the standard elevator button and the wheelchair elevator button, so that the operation of the display is turned ON when the standard elevator button or the wheelchair elevator button is touched.

Description

Power-saving display system using a non-contact switch The present invention relates to a power-saving display system using a non-contact switch that can efficiently improve power consumption by using a non-contact switch, continuously detecting the presence or absence of a human body, and turning the operation of the display on/off according to the presence or absence of a person. Generally, PIR sensors (Passive Infrared Sensors) are used to continuously detect the human body. As passive infrared sensors that detect the movement of an infrared light source at the same wavelength emitted by humans, PIR sensors are primarily used in the field of human motion detection systems. PIR sensors are excellent at detecting infrared light sources with wavelengths in the range of 7 to 14 µm, and thus are suitable for the infrared emission range of the human body, which is 8 to 14 µm, making them useful for detecting human motion. However, while such PIR sensors detect human movement well, they have the problem of not being useful for determining the presence or absence of the human body. PIR sensors are made of ferroelectric materials and operate on the principle that when infrared radiation enters, the temperature of the ferroelectric material rises, causing polarization and a change in its electrical properties. Therefore, the electrical characteristics of the PIR sensor change when infrared radiation enters, allowing it to detect human movement. While conventional PIR sensors are effective for detecting moving human bodies, they have limitations in detecting a stationary human body. Meanwhile, as the number of cases where Digital Information Displays (DIDs) inside elevators continue to operate even when no one is present is increasing, leading to increased unnecessary power consumption, energy-saving display systems are required. Korean Registered Patent Publication No. 10-1468864 (Patent Document 1) discloses a "power saving control system for a display," wherein the power saving control system for a display according to this invention comprises: an image device (10) equipped with a display (11); a detection sensor (20) equipped in the image device (10) that detects the movement of a person or object and controls the operation of the display (11) through a control unit; and a notification means (30) coupled to the outside of the image device (10) and linked with the display (11) according to the detection by the detection sensor (20). The above-mentioned video equipment (10) is coupled to one side and has an opening (41) formed on the front to accommodate a notification means (30), and is composed of a housing (43) and a transparent cover (45) formed of a transparent material that covers the opening (41) of the housing (43), so that the notification means (30) can be seen from the front and side through the transparent cover (45) and is protected by a protective cover (40). When the detection sensor (20) detects the movement of a person or object, the display (11) operates and the notification means (30) operates for a few seconds under the control of the control unit, and when the detection sensor (20) does not detect the movement of a person or object for a set period of time, the display (11) switches to a power-saving mode under the control of the control unit. In the case of Patent Document 1 as described above, although there is an advantage in that the operation of the display can be quickly controlled according to the detection of movement of a person or object by a detection sensor, thereby achieving a reduction in power consumption without inconvenience in use, the detection sensor here is limited to a sensor capable of detecting the movement of a person or object, and thus contains a problem in that the presence of a person cannot be detected when a person is present but is in a stationary state without movement. FIG. 1 shows a standard elevator button and a wheelchair elevator button formed on an elevator control panel according to the present invention. FIG. 2 shows a display lifting means according to the present invention. Figure 3 shows the lubrication system of the lifting means illustrated in Figure 2. Terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Throughout the specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Furthermore, terms such as "…part," "…unit," "module," and "device" as used in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware, software, or