JPS63266387A - Seat display device - Google Patents

Abstract

PURPOSE:To make it unnecessary to provide a sensor on every seat, by using an infrared-ray detecting camera, and to easily install a device afterward even in an established meeting place, irrespective of the whole shape of a seat group. CONSTITUTION:An optical system for catching each seat as an object to be photographed, and a camera part 1 consisting of an infrared-ray detector are placed in the upper part of a seat group. Also, an output signal of the camera part 1 is converted to a signal being proportional to a temperature by a linearizer 2, whether it is larger or smaller than a prescribed threshold level is compared by a threshold level detecting circuit 3, and binarization of '1' or '0' is executed. This binary information is stored in a memory 4. Also, position information of a seat to be displayed is written in advance in a seat pattern ROM. Subsequently, image information for showing a discrimination for whether each seat is vacant or occupied, which is generated by an image displaying circuit 8 is displayed by a display device 9. In such a way, this device can cope with a seat display in various meeting places, and can be adapted even to a dark place.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a device for remotely observing and displaying the presence or absence of vacant seats in a venue, etc. where a large number of seats are arranged in a predetermined positional relationship. In particular, the present invention relates to a seat display device that detects and discriminates infrared rays emitted by an object to be observed.

<Prior Art> Conventionally, when displaying the availability of seats in a venue where a large number of seats are arranged in a predetermined positional relationship, a sensor is provided for each seat.

<Problems to be solved by the invention> However, with this method, since a sensor is installed at each seat, each output signal must be collected and information processed, which increases equipment costs, and also makes it difficult to install a sensor in an existing venue. There was a problem in that it was difficult to attach.

The purpose of the present invention is to enable remote observation by simply installing one camera above the venue, and to monitor the number of seats in the venue.
To provide a seat display device that can be applied regardless of the arrangement of seats and the overall shape of a seat group, and can also be observed even when the inside of a venue is dark because the lights are turned off.

Means for Solving Problems> The principle of the present invention is to install an infrared detection camera above a group of seats in a venue, detect infrared rays emitted from human bodies, and discriminate whether or not a seat is occupied by a human body. . To increase resolution, a telephoto lens can be used to sequentially scan the seats.

The configuration of the seat display device of the present invention includes a camera section that detects infrared rays emitted by the human body, a signal processing section that processes the video signal obtained from the camera section, a data section in which seat data is written, and the data section. and a display section that displays whether each seat is vacant or occupied based on the output of the signal processing section and the signal processing section.

<Effect> In general, all objects emit electromagnetic waves or light with wavelengths that depend on their temperature. Since the human body's body temperature is approximately constant, it emits light at a nearly constant wavelength, that is, far-infrared light. The camera section detects this infrared rays and outputs an electrical signal. This signal is discriminated to determine the presence or absence of a human body, and the determination results are displayed for each seat data.

<Example> FIG. 1 shows a block diagram of an embodiment of the present invention.

The camera section 1 is disposed above the seat group, and consists of an optical system capable of capturing each seat as an object, and an infrared detector disposed at its focal point. A mechanism for scanning the object may be provided in this optical system. As an infrared detector, semiconductor type infrared detector, pyroelectric type infrared detector, infrared C
A CD or the like is used. The linearizer 2 converts the output signal of the camera section 1 into a signal proportional to temperature. The threshold detection circuit 3 binarizes the analog signal into "1" or 0" depending on whether the output signal of the linearizer 2 is larger or smaller than a predetermined threshold. The memory 4 stores this binarized information. is stored at a predetermined address.

On the other hand, position data of all seats to be displayed is written in advance in the seat pattern ROM 6. The readout circuit 5 and the readout circuit 7 operate in synchronization with each other, and the former outputs information from the stored contents of the memory 4 as to whether the temperature at that position is above the threshold value, that is, whether it is around body temperature. However, the latter outputs seat position data.

The image creation circuit 8 determines whether each seat is vacant or occupied,
Create image information. The display device 9 displays this image information.

FIG. 2 is a schematic diagram showing output signals of the infrared detector of the camera section 1 on a plane according to the scanning order of the camera.

Concentric loops, like contour lines on a map, represent points of equal signal strength, and dotted lines represent seat boundaries.

Therefore, the area where the concentric loops are drawn indicates the presence of a human body. The linearizer 2 converts the output signal of the infrared detector into a signal proportional to temperature.
The output signal of the linearizer on the ' line is as shown in Figure 3. When the threshold value detection circuit 3 sets the threshold value to a level corresponding to, for example, 30° C. and performs the binarization process, the digital information shown in FIG. 4 is obtained and this is written into the memory 4. The grid in FIG. 5 is a diagrammatic representation of the seat pattern in the ROM 6. The image creation circuit 8 marks the position of the human body on this seat pattern, and the display device 9 displays the vacant seat pattern or the seat pattern. indicate. 'As a modified embodiment of the present invention, instead of the pattern display on the display device 9,
You can also create a list using a printer.

<Effect of the invention> .

According to the present invention, it is possible to correspond to seat displays of various venues simply by changing the data in the seat pattern ROM. Additionally, since it detects and processes infrared rays generated by the human body, it can be applied to dark places such as movie theaters, theaters, and music venues. Furthermore, since it is only necessary to discriminate between empty seats and occupied seats, it is possible to use a detector with low temperature resolution or low spatial resolution. Furthermore, when displaying the entire venue, it becomes possible to observe and display not only the condition of the seats but also the condition of the aisles and standing seats along the walls.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing an embodiment of the present invention, and FIGS. 2, 3, 4, and 5 are diagrams explaining the operation of the above embodiment.

Claims (1)

[Claims] A camera section that detects infrared rays emitted by the human body, a signal processing section that processes the video signal obtained from the camera section, a data section in which seat data is written, and based on the output of the data section and the signal processing section above. A seat display device that has a display section that displays whether each seat is vacant or occupied.