JP4212824B2 - Elevator wireless communication device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator radio communication device, and more particularly to an elevator radio communication device equipped with a plurality of types of antennas, a short-range communication antenna and a long-distance communication antenna.
[0002]
[Prior art]
As a conventional elevator communication device, for example, there is an elevator communication device as described in JP-A-63-300084. In this elevator communication device, a radio wave communication device having a sharp directional antenna is attached to the elevator machine room side, and a radio wave communication device having a wide beam width antenna is attached to the elevator car side. Improves reliability.
[0003]
[Problems to be solved by the invention]
However, in the case of the conventional elevator communication apparatus as described above, in the elevator which is a moving body, securing the minimum communication distance and securing the maximum communication distance are issues, and either is achieved depending on the specifications of the elevator. There was a problem that communication could not be performed.
[0004]
The present invention has been made in order to solve the above-described problems, and can widen the range of communication distance in an elevator as a mobile body. Moreover, the antenna for short-range communication and the long-range communication are provided. Radio signal interference that can occur when communicating with both antennas can be prevented, and the short-range and long-distance communication antennas used can be automatically switched, and this occurs when switching between antennas. It is an object of the present invention to provide an elevator radio communication device that can prevent data corruption of radio signals that are worried about.
[0005]
[Means for Solving the Problems]
An elevator wireless communication apparatus according to the present invention is an elevator wireless communication that wirelessly communicates between an elevator machine room device provided in an upper part of an elevator hoistway and an elevator car device that moves up and down in the elevator hoistway. An elevator radio communication device comprising a plurality of types of antennas for transmitting and receiving a short-range communication antenna and a long-range communication antenna, respectively, in the elevator machine room device and the elevator car. An indicator signal indicating the floor position of the elevator car included in the elevator control signal output from the panel to the elevator car equipment is identified, and the antenna is turned on when the floor position of the elevator car reaches a predetermined floor position. Indicator identifying means for outputting a switching command, and the indicator identifying means Based on the antenna switching command, the antenna to be used, a short distance area the short-range communication antenna, a long distance area in which and an antenna switching unit that performs wireless communication by switching each of the long distance communication antenna is there.
[0008]
In the elevator radio communication apparatus according to the present invention, the antenna switching signal output in the case of an instruction from the indicator identifying unit to the antenna switching unit is a communication without communication data which is a non-signal area of the elevator control signal. It is output in the waiting area.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram showing Embodiment 1 of the present invention.
In the figure, 1 is an elevator machine room, 2 is an elevator control panel, 3 is a hoist, 4 is an elevator hoistway, 5 is an elevator car, 6 is a counterweight, 7 is a rope, and 8 is installed at the top of the hoistway. A wireless communication device (hereinafter, a hoistway top wireless communication device), 9 is a short-range communication antenna, and 10 is a long-range communication antenna.
Reference numeral 11 denotes a wireless communication device (hereinafter referred to as a “car-side wireless communication device”) installed in the upper part of the elevator car 5, 12 is a short-range communication antenna, and 13 is a long-range communication antenna.
[0010]
FIG. 2 is a block diagram showing an example of a circuit configuration of the wireless communication apparatus according to Embodiment 1 of the present invention.
The hoistway top side radio communication device 8 and the car side radio communication device 11 are used in common. Here, the car-side wireless communication device 11 will be described below.
In FIG. 2, 14 is an I / F circuit, 15 is a modulation / demodulation circuit, 16 is an antenna switching means, 17 is an indicator identification means, and this indicator identification means 17 includes a CPU 17a, ROM 17b, RAM 17c, and floor setting switch 17d. Have.
[0011]
The I / F circuit 14 is an I / F circuit for communicating with an elevator device, and here is an I / F circuit for communicating with an elevator car device. The modulation / demodulation circuit 15 modulates a signal from the I / F circuit 14 and outputs the modulated signal to the short-range communication antenna 12 or the long-range communication antenna 13, and the short-range communication antenna 12 or the long-range communication antenna 13. Is demodulated and output to the I / F circuit 14.
The antenna switching unit 16 switches the antenna to be used to either the short-range communication antenna 12 or the long-range communication antenna 13 based on a command from the indicator identification unit 17.
[0012]
The indicator identifying means 17 identifies an indicator signal included in an elevator control signal between the I / F circuit 14 and the modulation / demodulation circuit 15 and an arbitrary indicator signal set by the floor setting switch 17d, that is, an elevator car. When the floor position is reached, an antenna switching command is output to the antenna switching means 16. For example, when the floor position of an elevator car that can communicate with the short-range communication antenna 12 is set by the floor setting switch 17d, when the indicator signal is equal to or greater than the value of the floor setting switch 17d, the antenna identification switch 17 switches the antenna. An instruction for using the short-range communication antenna 12 is output to the means 16 to perform wireless communication with the short-range communication antenna 12, and when the indicator signal is smaller than the value of the floor setting switch 17d, the indicator identification means 17 The long range communication antenna 13 is used to output a use command for the long distance communication antenna 13 to the antenna switching means 16 to perform wireless communication.
[0013]
FIG. 3 is a flowchart showing the operation of the indicator identification unit 17.
In step S <b> 1, the indicator identification unit 17 when the power is turned on outputs an antenna switching signal to the antenna switching unit 16. A command to use the short-range communication antenna 12 is output as an initial value. In step S2, wireless data communication is confirmed. If wireless data communication is possible, the process proceeds to step S4. If wireless data communication is not possible, the antenna is not matched, and the process proceeds to step S3.
[0014]
In step S <b> 3, the indicator identifying unit 17 outputs a command for switching to the long-distance communication antenna 13 to the antenna switching unit 16. If wireless data communication is impossible in step S2, the antenna is not matched to the distance between the hoistway top side wireless communication device 8 and the car side wireless communication device 11, so in step S3 the antenna is Switch to enable wireless data communication. In step S4, the value of the floor setting switch 17d and the indicator signal are identified, and the value of the floor setting switch 17d and the value of the indicator signal are stored in the RAM 17c.
[0015]
In step S5, it is confirmed whether the wireless data communication is being performed or is waiting. If the wireless data communication is being performed, step S5 is repeatedly performed until the wireless communication is on standby, and if it is waiting, the process proceeds to the next step S6. The purpose of step S5 is to prevent data corruption associated with antenna switching by performing antenna switching while waiting for wireless data communication. In step S6, the value of the indicator signal stored in the RAM 17c is compared with the value of the floor setting switch 17d. If the indicator signal is equal to or greater than the value of the floor setting switch 17d, the process proceeds to step S7, and the indicator signal is If it is smaller than the value of the setting switch 17d, the process proceeds to step S8.
[0016]
In step S <b> 7, the indicator identifying unit 17 outputs a command for switching to the short-range communication antenna 12 to the antenna switching unit 16. In step 8, the indicator identification unit 17 outputs a command for switching to the long-distance communication antenna 13 to the antenna switching unit 16. When the indicator signal is equal to or higher than the value of the floor setting switch 17d, wireless communication is performed by the short-range communication antenna 12, and when the indicator signal is smaller than the value of the floor setting switch 17d, the long-range communication antenna 13 is wireless. We are going to communicate. When step S7 or step S8 is completed, the process returns to step 4 and the same operation is repeated until the power is turned off.
[0017]
【The invention's effect】
As described above, according to the present invention, in the elevator wireless communication device that wirelessly communicates between the equipment in the elevator machine room and the equipment in the elevator car, each of the equipment in the elevator machine room and the elevator car has a short distance. Since a plurality of types of antennas for communication and long-distance communication are provided, there is an effect that a wide communication distance range can be obtained in an elevator that is a moving body.
[0018]
Further, according to the present invention, the elevator machine room is provided with antenna switching means for performing wireless communication by switching to the short-range communication antenna in the short-range region and to the long-range communication antenna in the long-range region. The wireless communication device on the side and the wireless communication device on the elevator car side can communicate with both the short-range communication antenna and the long-range communication antenna, respectively, thereby preventing radio signal interference that may occur.
[0019]
Further, according to the present invention, there is provided indicator identifying means for instructing switching of the antenna switching means, and the indicator identifying means is output from the elevator control panel to the elevator car equipment as a switching reference of the antenna switching means. The antenna switching means is instructed to switch to the antenna to be used based on an arbitrary indicator signal of the indicator signal indicating the position display of the elevator included in the elevator control signal, so that automatic antenna switching is possible. effective.
[0020]
Further, according to the present invention, the antenna switching signal output at the time of an instruction from the indicator identifying means to the antenna switching means is a non-signal area of the elevator control signal, which is a communication waiting state area without communication data. Since it is output, there is an effect that it is possible to prevent garbled data of a radio signal that is likely to occur at the time of antenna switching.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an elevator radio communication apparatus according to Embodiment 1 of the present invention;
FIG. 2 is a configuration diagram showing an example of a main part of an elevator radio communication apparatus according to Embodiment 1 of the present invention;
FIG. 3 is a diagram for explaining the operation of indicator identifying means in the elevator radio communication apparatus according to embodiment 1 of the present invention;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Elevator machine room, 2 Elevator control panel, 3 hoisting machine, 4 elevator hoistway, 5 elevator car, 6 counterweight, 7 rope, 8 hoistway top side wireless communication device, 9,12 antenna for short distance communication, 10 , 13 Long distance communication antenna, 11 is a car side wireless communication device, 14 I / F circuit, 15 modulation / demodulation circuit, 16 antenna switching means, 17 indicator identification means.

Claims (2)

In the elevator wireless communication device for wirelessly communicating with the equipment in the elevator machine room provided in the upper part of the elevator hoistway and the equipment of the elevator car moving up and down in the elevator hoistway,
An elevator radio communication apparatus provided with a plurality of types of antennas for transmitting and receiving a short-range communication antenna and a long-range communication antenna in each of the elevator machine room equipment and the elevator car,
When the indicator signal indicating the elevator car floor position included in the elevator control signal output from the elevator control panel to the elevator car equipment is identified, and the elevator car floor position becomes a predetermined floor position. Indicator identifying means for outputting an antenna switching command to
Based on the antenna switching command from the indicator identification means, the antenna to be used is switched to the short-range communication antenna in the short-range area and to the long-range communication antenna in the long-range area to perform wireless communication. And an elevator wireless communication device.   The antenna switching signal output at the time of an instruction from the indicator identification unit to the antenna switching unit is output in a communication waiting state area without communication data, which is a non-signal area of an elevator control signal. The elevator wireless communication apparatus according to claim 1.

Images