JPH0522199A - Elevator radio communication system - Google Patents

Abstract

PURPOSE:To realize speech between a portable radio machine in a moving elevator and an external telephone set with a sufficient sensitivity. CONSTITUTION:When an elevator 1 is placed near an elevator hall and a portable radio machine 2 and a telephone set 6 speak to each other through a radio base station 4 in the elevator hall, the intensity of the electric field received by the radio base station 4 is weakened according as the elevator 1 is moved away from the elevator hall. An exchange 5 monitors the intensity of the electric field received by a radio base station 9 for elevator and switches a speech line from the radio base station, where the intensity of the reception electric field is reduced, to the radio base station 9 for elevator where it is high, thus continuing the speech. That is, the service area of the radio base station 9 for elevator is used to enable the portable radio machine 2 in the elevator 1 and the external telephone set to speak to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator radio communication device for communicating between a mobile radio in a moving elevator and a telephone in a building via an exchange.

[0002]

2. Description of the Related Art FIG. 10 is a block diagram showing a conventional elevator radio communication device. In the figure, 1 is an elevator attached to a building, 2 is a portable radio, and 3 is a portable radio. Callers 4 near the elevator hall are wireless base stations mounted on the ceiling and are connected to the exchange 5 so that they can perform wireless communication with the portable wireless device 2. 6 is a telephone connected to the exchange 5, and 7 is a service area of the wireless base station 4.

Next, the operation will be described. The conventional elevator radio communication device is configured as described above, and within the service area 7 which is the receiving area of the radio base station 4, the caller 3 uses the portable radio 2 and the radio base station 4 and the exchange 5 to intervene. And makes a call with another telephone 6 in the building. In other words, in the service area 7, when the caller 3 wirelessly communicates with the wireless base station 4 by the portable wireless device 2, this communication information is transmitted to the exchange 5 by wire and wired with a specific telephone in the building. Communication and telephone calls become possible.

[0004]

Since the conventional elevator radio communication device is configured as described above, although the mobile radio 2 can make a call via the radio base station 4 near the elevator 1, When the caller 3 gets into the elevator and the elevator 1 moves, the portable wireless device 2 leaves the service area of the wireless base station 4,
The call electric field becomes weak and the call line is finally cut off to make the call impossible. As a result, the portable wireless device 2 cannot be used in the elevator.

The invention of claim 1 has been made to solve the above-mentioned problems, and is an elevator radio communication in which a portable radio in a moving elevator can talk with an external telephone while obtaining sufficient sensitivity. The purpose is to obtain the device.

Further, according to the invention of claim 2, when the reception electric field strength of the radio base station in the building is lowered, the radio base station for the elevator is automatically kept highly sensitive and the portable radio device in the elevator is provided. An object is to obtain an elevator radio communication device capable of communicating.

Further, in the invention of claim 3, when the elevator has a communication line secured between the portable radio at the elevator hall and the elevator radio base station in the elevator, the elevator moves. Even so, it is an object of the present invention to obtain an elevator radio communication device capable of preventing disconnection of the communication line.

[0008]

An elevator radio communication apparatus according to the present invention comprises a radio base station installed in a building and connected to a telephone via an exchange, and the radio base station. In between, a portable radio that can make a call in the building, and a transmission line provided along the passage of the elevator attached to the building, having a radiation or leakage function of radio waves, are provided by the elevator radio base station. , A communication is made possible between the portable wireless device and the exchange carried in the elevator by using the transmission line.

Further, the elevator radio communication device according to the invention of claim 2 is arranged between a radio base station installed in a building and connected to a telephone via an exchange, and the radio base station. By providing a portable wireless device capable of making a call in a building and attaching an elevator wireless base station to an elevator attached to the building, the portable wireless device carried into the elevator is transferred to the wireless base by the exchange. When the decrease in the received electric field strength of the station is detected, the telephone can be communicated with the exchange.

Further, the elevator radio communication device according to the invention of claim 3 is arranged between a radio base station installed in a building and connected to a telephone through an exchange, and the radio base station. A radio base station for an elevator having a portable radio device capable of making a call in a building, and having an electric wave service area in the elevator attached to the building to enable a call only with the mobile radio device carried into the elevator. It has a station.

[0011]

The transmission line according to the invention of claim 1 enables communication between the radio base station for an elevator and the exchange outside the elevator and the portable radio carried in the elevator by radiation or leakage of radio waves. To

Further, the elevator radio base station according to the invention of claim 2 is attached to the elevator, and automatically when the communication sensitivity between the portable radio device carried into the elevator and the radio base station in the building is lowered. Then, the call is switched to the elevator radio base station so that the call can be continued.

Further, in the elevator radio base station according to the invention of claim 3, the radio wave service area is limited to the inside of the elevator, so that the portable radio device carried into the elevator is a radio base station near the elevator hall. By connecting the call line with the station, the call line is prevented from being cut off after moving the elevator and the call is prevented from being cut off. Enable communication.

[0014]

EXAMPLES Example 1. An embodiment of the invention of claim 1 will be described below with reference to the drawings. In FIG. 1, 1 is an elevator attached to a building, 2 is a portable wireless device, 3 is a caller near the elevator hall carrying the portable wireless device 2, and 4 is a wireless base station mounted on the ceiling in the building. And switch 5
Is connected to the portable wireless device 2 so that wireless communication can be performed with the portable wireless device 2. 6 is a telephone connected to the exchange 5, 7 is a service area of the radio base station 4, and 8 is a passage 1 of the elevator 1.
A radiation coaxial cable, 9 installed along A, is another elevator radio base station that is connected to this radiation coaxial cable 8 and performs radio communication with the portable radio 2, and this is connected to the exchange 5. 10 is a radio base station for elevator 9
Is the service area.

Next, the operation will be described. Now, when the elevator 1 is near the elevator hall and a call is being made between the mobile wireless device 2 and the telephone 6 via the wireless base station 4 in this elevator hall, the elevator 1 moves, When leaving the elevator hall, the electric field strength received by the radio base station 4 becomes weak. On the other hand, the exchange 5 monitors the electric field strength received by the elevator radio base station 9, and by switching the communication line from the radio base station 4 having a weak reception electric field to the elevator radio base station 9 having a sufficiently strong electric field, The call continues. That is, it is possible to use the service area of the elevator radio base station 9 to make a call between the portable wireless device 2 in the elevator 1 and an external telephone.

Example 2. In the above embodiment, the leaky radiation coaxial cable 8 is used as the radiation transmission line, but a leaky waveguide 8A as the transmission line as shown in FIG. 2 may be used. By using this leaky waveguide 8A, it is possible to efficiently leak and radiate short wavelength radio waves.

Embodiment 3. FIG. 3 shows an embodiment of the invention of claim 2, in which 1 is an elevator attached to a building, 2 is a portable radio, and 3 is a call near the elevator hall where the portable radio 2 is carried. Persons 4 are wireless base stations mounted on the ceiling, which are connected to the exchange 5 so that they can perform wireless communication with the portable wireless device 2. 6 is an exchange 5
Is a telephone connected to the wireless base station 4, 7 is a service area of the wireless base station 4, 11 is an elevator wireless base station which is connected to the exchange 5 and wirelessly communicates with the portable wireless device 2, which is mounted on the ceiling of the elevator 1. ing. Reference numeral 12 is a service area for radio waves received by the elevator radio base station 11.

Next, the operation will be described. Now, when the caller 3 gets in the elevator 1 and moves while the mobile wireless device 2 and the telephone 6 are talking at this elevator hall via the wireless base station 4 near the elevator hall, the wireless base station 4 causes The received electric field becomes weak. However, the exchange 5 monitors the electric field strength received by each radio base station 4, and when the received electric field weakens, the telephone line is switched from the radio base station 4 to the elevator radio base station 11 having a sufficiently strong electric field. As a result, the portable wireless device 2 and the exchange 5 can continue communication via the elevator wireless base station 11.

Example 4. FIG. 4 shows another embodiment of the invention of claim 2. This is an elevator radio base station 11 installed in a space 13 in the attic of the elevator 1. According to this, the same effect as that of the first embodiment can be expected, and in particular, the appearance of the interior of the elevator 1 is not spoiled.

Example 5. FIG. 5 shows still another embodiment of the invention of claim 2. This is a radio base station 11 for an elevator installed in a space 14 under the floor of the elevator 1. According to this, the same effect as that of the second embodiment can be expected.

Example 6. FIG. 6 shows another embodiment of the invention of claim 2. This is an elevator radio base station 11 installed on the roof 15 of the elevator 1. According to this, it is possible to expect the same effects as in the second and third embodiments, and further, it is possible to facilitate the installation and maintenance of the elevator radio base station 11.

Example 7. FIG. 7 shows an embodiment of the invention of claim 3, in which 1 is an elevator attached to a building, 2 is a portable radio, and 3 is a call near the elevator hall where the portable radio 2 is carried. Persons 4 are wireless base stations mounted on the ceiling, which are connected to the exchange 5 so that they can perform wireless communication with the portable wireless device 2. 6 is an exchange 5
7 is a telephone connected to the radio base station 4, 7 is a service area of the radio base station 4, 16 is a radio base station for an elevator mounted on the ceiling of the elevator 1, which has a helical antenna 17 as shown in FIG. A highly directional reception electric field region 18 having only the inside as a service area is formed.

Next, the operation will be described. First, since the helical antenna 17 forms a highly directional reception electric field region in the elevator 1, the service area of radio waves by the elevator radio base station 16 is only in the elevator 1 and there is a caller 3 in the elevator 1. Can communicate with the telephone 6 via the elevator radio base station 16 using the portable radio device 2. On the other hand, when the caller 3 is in the elevator hall in the building outside the elevator 1, the telephone 6 via the radio base station 4 installed near the elevator hall.
You can talk with. Therefore, it is possible to prevent the call connection between the portable wireless device in the elevator hall or another adjacent elevator and the radio base station for the elevator, and prevent the call line from being disconnected after the elevator 1 moves.

Example 8. FIG. 9 shows another embodiment of the elevator radio base station 16. This uses a Cassegrain antenna 19 in place of the helical antenna 17, and can have a strong directivity in the reception electric field region as in the above embodiment.

[0025]

As described above, according to the first aspect of the present invention, the transmission line having the function of radiating or leaking radio waves is provided along the passage of the elevator, and the portable wireless device in the elevator is provided through the transmission line. Since it is configured so that a call can be made with the exchange in the building, there is an effect that this call can be realized with high sensitivity regardless of the movement of the elevator.

According to the second aspect of the present invention, when the portable radio device in the elevator moves out of the electric field receiving area of the radio base station in the building, the exchange automatically detects the decrease in the electric field intensity. Since it is configured to make a call with the above-mentioned elevator radio base station, there is an effect that it is possible to continue communication between the portable radio device in the elevator and the telephone in the building.

Further, according to the invention of claim 3, the elevator radio base station is configured to have a highly directional radio wave service area that enables communication only with a portable radio device in the elevator. , Near the elevator hall, the portable radio in the elevator is connected to the radio base station in the building, the call line to the radio base station for the elevator is cut, and the call is cut off after the elevator carrying the mobile radio moves. There is an effect that a thing that can surely be prevented can be obtained.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an elevator radio communication device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment of the transmission line in FIG.

FIG. 3 is a configuration diagram showing an elevator radio communication device according to an embodiment of the present invention.

FIG. 4 is a configuration diagram showing an elevator radio communication device according to another embodiment of the invention of claim 2;

FIG. 5 is a configuration diagram showing an elevator radio communication device according to still another embodiment of the present invention.

FIG. 6 is a configuration diagram showing an elevator radio communication device according to still another embodiment of the invention as set forth in claim 2;

FIG. 7 is a block diagram showing an elevator radio communication device according to an embodiment of the invention of claim 3;

8 is an enlarged front view showing an embodiment of the elevator radio base station in FIG. 7. FIG.

9 is an enlarged front view showing another embodiment of the elevator radio base station in FIG. 7. FIG.

FIG. 10 is a configuration diagram showing a conventional elevator wireless communication device.

[Explanation of symbols]

1 elevator 1A passage 2 Portable radio 4 wireless base stations 5 exchanges 6 telephones 8 transmission lines 9 Elevator radio base station 11 Elevator radio base station 16 Elevator radio base station

Claims (3)

[Claims] 1. In the building, between a telephone installed in the building, a radio base station installed in the building and connected to the telephone through an exchange, and the radio base station. The portable wireless device capable of making a call, the transmission line provided along the passage of the elevator attached to the building and having a function of radiating or leaking radio waves, and the portable wireless device carried into the elevator, the transmission is performed. An elevator wireless communication device comprising: an elevator wireless base station that enables communication with the exchange using a line. 2. In the building, a telephone installed in the building, a radio base station installed in the building and connected to the telephone via an exchange, and the radio base station in the building. A portable wireless device capable of making a call, and the portable wireless device attached to an elevator attached to the building and carried into the elevator, when the decrease in the received electric field strength of the wireless base station by the exchange is detected, An elevator wireless communication device comprising an elevator wireless base station capable of communicating with an exchange. 3. In the building, between a telephone installed in the building, a radio base station installed in the building and connected to the telephone via an exchange, and the radio base station. A portable radio that can make a call, and an elevator radio base station that is provided in an elevator attached to the building and has a radio wave service area that enables communication only with the portable radio that is carried into the elevator. Elevator wireless communication device.