Seating display

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

It relates to a seating display device that comprehensively manages a large number of chair seats, such as trains and theaters, which exceed dozens or hundreds, and informs customers of vacant seats.

【0002】

[Conventional technology]

In the past, there was no simple, low-cost, and highly reliable sensor for detecting the seating of the human body, so in order to comprehensively manage a large number of seats, such as trains and theaters, which exceed tens or hundreds, and notify customers of vacant seats. The seating display device has been extended. Conventionally, as a seating sensor for detecting the seating of the human body, a microswitch type sensor, an infrared light sensor, and a capacitance type sensor are known. The microswitch type sensor has a drawback that it is liable to break down because it detects the seated state by a mechanical mechanism, and it is liable to malfunction due to folding of luggage or a chair. Further, the infrared optical sensor has a drawback that malfunctions easily occur due to folding of luggage or a chair, and also has a problem that the optical sensor element is expensive and therefore costly.

【0003】

Further, as a capacitance type sensor, Japanese Patent Application Laid-Open No. 4-14534 discloses a seating sensor for detecting the seating of a human body on a toilet seat. This capacitance type sensor uses the heater wire arranged inside the toilet seat and the ground as electrodes, and detects seating from the change in the resonance state due to the capacitance of the human body (between the human body and the ground), and the heater. Since the wire is used as one of the electrodes, the capacitance formed is small and unstable.

【0004】

[Problems to be Solved by the Invention]

In view of the above-mentioned problems of the prior art, the present inventors can reliably detect the seated state without relying on a mechanical mechanism that is prone to failure, and can be installed in a large number of seats exceeding tens or hundreds. Focusing on the capacitance type sensor in consideration of the simplicity of the structure and the low cost because it is necessary, the present invention has been studied in detail to solve the drawback of the low sensitivity of the capacitance type sensor. This is what led to the invention. The capacitance type sensor disclosed in Japanese Patent Application Laid-Open No. 4-14534 has a drawback of low sensitivity because the heater wire arranged inside the toilet seat is used as one electrode. The present inventors have a capacitance type sensor capable of detecting the seating of a human body with high sensitivity by a new idea of arranging a conductor having a large area in the toilet seat instead of the heater wire which is an electrode, for example, aluminum foil. By installing this capacitance type sensor in a large number of seats, the seating display device of the present invention has been realized.

【0005】

The present invention provides a seating display device capable of comprehensively, easily and surely managing the seating state of each seat of a train, a theater or the like having a large number of seats exceeding several tens or hundreds. The purpose.

【0006】

[Means for solving problems]

(Structure of the First Invention) The seating display device of the first invention includes a conductor arranged inside a plurality of seats, an oscillation circuit that generates a high-frequency signal applied to the conductor, and the oscillation circuit. The seating of the human body is determined from the coupling circuit for coupling the conductor, the detection circuit for detecting the capacitance of the human body formed by the seating of the human body on the conductor, and the output of the detection circuit. It is characterized in that it is composed of a seating detection unit including a determination circuit, and a display means for displaying a seating state of a plurality of seats by receiving seating signals from the plurality of seating detection units.

【0007】

(Structure of the Second Invention) The seating display device of the second invention includes a conductor arranged in a plane inside a plurality of seats, an oscillation circuit for generating a high-frequency signal applied to the conductor, and the same. A coupling circuit for coupling the oscillation circuit and the conductor, a detection circuit for detecting the human body capacitance formed by seating the human body on the conductor, and a seating of the human body from the detection circuit output. A seating detection unit including a determination circuit for determining the above and a plurality of seating detection units are grouped, and a plurality of parallel seating signals output from the group are converted into serial signals for each group. The signal control circuit and a plurality of serial seating signals for each group output from the signal control circuit are converted into parallel signals for each seating detection unit according to a group order in which a sequence is given in advance, and the seating state of each seat is displayed. It is characterized in that it is composed of a display means corresponding to a seating detection unit for so on.

【0008】

[Action]

(Operation of the First Invention) FIG. 1 shows an example of the configuration of the seating display device according to the present invention, and FIG. 2 shows a configuration for explaining the operating principle of the seating detection unit of the human body. As shown in FIG. 1, a planar conductor 1 arranged inside a seat, a detection unit 2 connected to the conductor 1, and a plurality of outputs from the detection unit 2 provided in each seat. It is composed of a signal control circuit 30 into which a seating signal S is input and a display means 31 for displaying which seat is vacant. The conductor may be made of any material as long as it has conductivity, and usually aluminum, copper, or the like may be used in the form of a foil. Further, the conductor is not limited in size as long as it has a form and an area that can detect the capacitance of the human body.

【0009】

With this configuration, a capacitance is formed between the conductor 1 inside the seat and the ground, and when a human sits on the seat, the human body capacitance is added in parallel to the capacitance of the seat. Since the resonance state of the oscillation circuit, which is a component of the detection unit 2 described later, changes, the human body can be detected from the amount of change. Next, the seating signals S output from the plurality of detection units 2 are input to the signal control circuit 30, distinguishing the seated state, for example, which chair is vacant or full, and the result is installed at the entrance of the venue or the like. The lamp or the like of the seat display means 31 is turned on to notify the user.

【0010】

In the present invention, the detection principle of the human body capacitance formed by the human body sitting on the seat will be described in detail with reference to FIG. The area of the conductor 1 arranged in a plane inside the seat is about 0.1 m.²If the height of the seat is 0.3m and the dielectric constant of the seat material is about 4, the capacitance C0 of the seat is about 10pF. On the other hand, since the capacitance Ch of the human body is around 100pF, Ch is added to C0 by sitting on the human body, and the capacitance of the entire seat increases to about 110pF. Since the capacitance is as small as several pF, it is susceptible to disturbance and becomes unstable, but it is possible to detect sitting on the human body with high sensitivity.

【0011】

When a high frequency is applied to the conductor 1 from the oscillation circuit 20 constituting the detection unit 2 through the coupling circuit 21 and the resonance state is set by the capacitance C0 of the unmanned seat, when Ch is added by sitting on the human body, the whole is added. The capacitance of the is increased, and the tuning is detuned from the resonance state. This resonance change is converted into a voltage signal by the detection circuit 22 that performs a detection action, and the seating of the human body is determined by the determination circuit 23 provided with the determination reference value for determining the voltage difference depending on the presence or absence of the human body. The seating signal S output from the detection unit 2 is input to the display means 31, and whether the seat is vacant or full is lit by a lamp or the like.

【0012】

(Operation of the Second Invention) Next, the operation of the seating display device according to the second invention will be described with reference to FIG. FIG. 3 shows a configuration for explaining a signal processing method for processing seating signals from a plurality of detection units. The number of seats in theaters and the like generally exceeds several hundred. The number of seats per train is around 100. Therefore, in order to manage the vacancy in the case of having a large number of seats, it is necessary to provide the seating detection unit 2 for all the seats, and the number of wire harnesses thereof becomes enormous, which makes the installation extremely complicated. Therefore, as shown in FIG. 3, the detection units 2 are divided into appropriate numbers, a signal control circuit 4 is provided between the detection unit 2 and the management display unit 3, and a large number of detection units are scanned by a time division method. -Select and transfer the seating signal output from each signal control circuit 4 to the management display unit 3. For example, if one signal control circuit 4a handles 10 channels (10 sets of detection units), the signal line from the detection unit 2 is reduced to 1/10, and the overall configuration as a seating display device becomes extremely simple.

【0013】

That is, in the seating display device of the second invention, a plurality of detection units 2 having a conductor as an electrode are divided into an appropriate number of groups, and parallel seating signals S output from the groups are divided into a plurality of signal control circuits 4a. It is converted into a serial signal for each group by 4b, 4c ---, and a plurality of serial seating signals for each group output from the signal control circuit 4 are parallel for each detection unit according to a group order in which a sequence is given in advance. It converts it into a signal and lights and displays the seated state on the display means 31 corresponding to the detection unit of each seat.

【0014】

[effect]

(Effect of the First Invention) According to the seating display device of the first invention, the seating state of each seat such as a train or a theater having a large number of seats exceeding several tens or hundreds is comprehensively, easily and surely. It becomes possible to manage. For example, in managing the seating status of seats in trains, theaters, entertainment facilities, etc., the seating signals from each seat are integratedly processed, and the seating status of all seats is displayed on the seat display device provided at the facility entrance, etc. Can be efficiently and safely guided to vacant seats.

【0015】

In addition, in entertainment facilities such as pachinko, lighting and equipment may be operated even though seats are vacant, and wasteful power may be used. Even in such a case, it is possible to save power by detecting the seating of the human body in the seat and driving the device only when there is a passenger, and energy saving can be achieved. Furthermore, the number of customers can be managed, and the efficient operation and management of the facility becomes possible. In addition, in a bed such as a hospital, by detecting the attachment / detachment of the human body to the bed with this device, it is possible to remotely monitor whether the patient is sleeping or away from the bed from the nurse's room, etc., and to manage the safety of the patient. It can be done accurately.

【0016】

Further, since the seating display device of the present invention detects the seated state of the human body as a change in capacitance, there is no malfunction due to baggage other than the human body unlike the conventional microswitch method. In addition, an infrared optical sensor system, for example, when an optical sensor is attached to the backrest, is not detected by reflected light from other than the human body.

【0017】

(Effect of the Second Invention) According to the seating display device of the second invention, in addition to the same effect as the seating display device of the first invention, the parallel seating signal output from each seating sensor is a signal control circuit. Is converted to a serial signal by. Since the serial signal is connected to the management display unit installed far away from the chair by a single signal line, it has an extremely great effect that the harness can be greatly simplified.

【0018】

[Example]

Examples of the present invention will be described below, but the present invention is not limited to these examples. (Example 1) The present embodiment 1 is an application of the main seating display device to a seating display of unreserved seats in a train, and will be described with reference to FIGS. 2, 4 and 5. In the seating display device according to the first embodiment, a plurality of seats having the aluminum foil 1, a seating detection unit 2 installed corresponding to the seats, and the seating detection unit 2 are grouped into a plurality of groups. A plurality of signal control circuits 4 provided for converting the parallel seating signal P output from the above into a serial signal S for each group, and a plurality of serial seating signals for each group output from the signal control circuit. In addition to displaying as seated or vacant seats on the centralized management unit 30 that converts the parallel signal for each seating detection unit and the seat display board 31 corresponding to the seating detection unit 2 of each seat according to the group order in which the seats are permuted in advance, all seats It is composed of a management display unit 3 that displays that the seat is full when a seating signal is present in the seat. Further, as shown in FIG. 4, the seat display board 31 is composed of a numbered lamp 31a for each seat and a full seat display lamp 31b, and when the seat is vacant, the lamp 31a is turned on to notify the passengers and the seats are full. Then, the full lamp 31b is turned on.

【0019】

With this configuration, first, a capacitance is formed between the aluminum foil 1 inside the seat and the ground, and when a human sits on the seat, the human body capacitance is added in parallel to the capacitance of the seat. Therefore, the resonance state of the oscillation circuit, which is a component of the seating detection unit 2, changes, so that the human body can be detected from the amount of change. The seating signals S output from the plurality of seating detection units 2 are input to the signal control circuit 30.

【0020】

Further, a specific configuration of the signal control circuit 30 will be described with reference to FIG. In order to make it easier to understand the operation of the invention, Fig. 5 shows an example of vacant seat display with 20 chairs . The seating sensor composed of the aluminum foils 1a, 1b, 1c---1j and the seating detection units 2a, 2b, 2c---2j, which are grouped into 10 groups, is connected to the respective signal control circuits 4a, 4b. For example, detection units 2a to 2j from 1 to 10 are connected to the first signal control circuit 4a, and parallel seating signals S1 to S10 output from each seating sensor are generated from the timing circuit 30a in the management display unit 3. Synchronized signal T₁It is converted into a serial signal by the signal control circuit 4a in synchronization with. Since the serial signal is connected to the management display unit 3 installed far away from the chair by a single signal line, the harness can be greatly simplified.

【0021】

The serial signal including the seating signal generated from the seat is restored to the original parallel signal by the serial-parallel converter 30b in the centralized control unit 30, and is input to the hold circuit 30c in the next stage. Once the seating signal is detected, the hold circuit 30c holds the seat for a certain period of time so that the vacant seat indicator lamp does not blink unnecessarily. For example, the seating signal may be interrupted due to a temporary departure from the audience seats in a theater or the like during a break, a departure from a train seat due to hand washing, or frequent getting on and off of a seat such as a child. In such a case, if the holding time is set longer, for example, about 10 minutes by the hold circuit 30c, the seat can be secured and the seat indicator lamp can be avoided from being erroneously turned on. However, 10 minutes after leaving the seat, for example, "This chair will automatically detect your seating, but it will be canceled if you leave for 10 minutes or more" so that it will be canceled automatically. You may.

【0022】

As shown in FIG. 4, for example, as shown in FIG. 4, the passengers are displayed by turning on the individual indicator lamps 31a for those having no seating signal corresponding to each seat output from the hold circuit 30c. Notify to. Further, when the seating signal is present in all of the hold circuits 30c, the full lamp 31b is turned on through the determination circuit 30d. Hereinafter, the operation of the seating detection unit and the control of the seating signal in the 11th to 20th seats are the same as the above-mentioned operation and control, and thus the description thereof will be omitted.

【0023】

According to the seating display device according to the first embodiment, the passengers can check the vacant seat status at the entrance of each train and reach the vacant seats without unnecessary movement, which is a nuisance to the congestion in the train and the seated passengers. It doesn't cost. In addition, in the ticket inspection of the ticket, if the seated state is memorized at the time of the first ticket inspection, the position of the newly seated passenger is displayed in the seat, so that the second ticket inspection can be performed extremely smoothly, and the conductor's ticket inspection can be performed. You can eliminate forgetting to check the ticket and making mistakes. The above explanation can be carried out with the same configuration except that the display method is different even in the audience seats of theaters and the like.

[Simple explanation of drawings]

[Figure 1]

It is a figure which shows the structure of the seating display device which concerns on this invention.

[Figure 2]

It is a figure explaining the operation principle of the seating detection part of a human body.

[Fig. 3]

It is a figure which showed the structure of the signal control circuit which concerns on Example 1. FIG.

[Fig. 4]

It is a figure which showed the seating display board in the train which concerns on Example 1. FIG.

[Fig. 5]

It is a figure which showed the detailed structure of the signal control circuit which concerns on Example 1. FIG.

[Explanation of symbols]

1 Aluminum foil 2 Detector 20 Oscillator circuit 21 coupling circuit 22 Detection circuit 23 Judgment circuit 3 Management display 30 Centralized management department 30a timing circuit 30b, 30e serial-parallel converter 30c, 30f hold circuit 30d judgment circuit 31 Seat display means 4 Signal control circuit 5 human body 6 seats T₁, T₂ Sync signal