JPH10336762A - Information transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information transmission system equipped with a repeater which enables a simple installation or extension without new wiring construction. SOLUTION: Repeaters 1a, 1b and 1c installed on a ceiling surface 8 of the same building are provided with a function to receive a radio wave, to convert it into an infrared ray signal and to transmit it, a function to receive the infrared signal, to convert it into the radio wave and to transmit it and a function to receive the infrared ray signal, to amplify it and to transmit the infrared ray signal. Hereat, each function transmits data by radio waves 6a, 6b and 6c between radio wave transmitter-receivers 2a, 2b and 2c, which are connected to each equipment 3, 4 and 5, and the repeaters 1a, 1b and 1c, which are close the former, and by the infrared ray signals 7a and 7b among each repeater 1a, 1b and 1c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of radio wave transceivers, which are provided in the same building and each transmit and receive radio waves connected to each device, via a plurality of repeaters. The present invention relates to an information transmission system for transmitting data for communication.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a system configuration diagram showing a conventional information transmission system disclosed in Japanese Patent Application Publication No. 0-300, in which reference numeral 30 denotes a base unit 31 attached to a ceiling or the like, and a base unit 31 attached thereto.
Unit 3 that is electrically and mechanically attached to and detached from
2, a data terminal device 33 for transmitting / receiving a radio signal to / from the functional unit 32 of the wireless repeater 30; a wireless terminal 34 connected to the base unit 31 of the wireless repeater 30; This is a twisted pair cable for transmitting data between the repeaters 30 via a batch panel 35 and a hub (HUB) 36.

In the conventional information transmission system configured as described above, radio signal data transmitted from a certain data terminal 33 is received by a radio repeater 30 and converted into electric signal data. The other wireless repeater 30 transmitted through the batch panel 35 and the hub 36
, And is converted to radio signal data and transmitted to another data terminal 33.

[0004]

The radio repeater 30 in the conventional information transmission system as described above can be installed only on the ceiling or the like where the twisted pair cable 34 is previously wired, but is not wired beforehand. In such a case, it is necessary to newly lay the twisted pair cable 34, and there is a problem that a wireless repeater or a data terminal cannot be easily added.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides an information transmission system having a radio repeater that can be easily installed or added without a new wiring work. It is another object of the present invention to obtain an information transmission system capable of preventing interference with other wireless devices.

[0006]

According to a first aspect of the present invention, there is provided an information transmission system provided between a plurality of radio wave transceivers provided in the same building and each transmitting and receiving radio waves connected to each device. In an information transmission system for transmitting data for each device via a plurality of repeaters, data is transmitted between the plurality of repeaters by radio signals.

According to a second aspect of the present invention, in the information transmission system according to the first aspect of the present invention, the repeater has a function of receiving a radio wave, converting it into an infrared signal, and transmitting it, and receiving an infrared signal and converting it into a radio wave. Has the function of receiving and amplifying infrared signals and transmitting infrared signals, transmitting and receiving radio waves to and from a radio wave transceiver, and transmitting and receiving infrared signals to other repeaters. It is to be done.

According to a third aspect of the present invention, in the information transmission system according to the second aspect of the present invention, a repeater is provided on a ceiling of a building, and an infrared transmitting / receiving section is provided at a lower end of an antenna section for transmitting / receiving radio waves. It is.

According to a fourth aspect of the present invention, in the information transmission system according to the first or second aspect, a transmission number is added to each frame of data transmitted from the radio wave transceiver. .

According to a fifth aspect of the present invention, in the information transmission system according to the second aspect of the present invention, a function of receiving, amplifying, and transmitting a radio wave to the repeater is added.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 to 6 show a first embodiment of the present invention. FIG. 1 is a system configuration diagram, FIG. 2 is a schematic configuration diagram of a repeater, FIG. 3 is a block diagram showing a circuit configuration of the repeater, FIG.
Is a flowchart showing a process after infrared reception of the repeater,
FIG. 5 is a flowchart showing a process after reception of a radio wave by the repeater, and FIG. 6 is a flowchart showing a registration process of a radio wave transceiver managed by the repeater.

In FIG. 1, reference numerals 1a, 1b and 1c denote functions for receiving a weak radio wave and converting it into an infrared signal and transmitting it, a function for receiving an infrared signal and converting it to a radio wave and transmitting the same, and receiving and amplifying the infrared signal. 2a, 2b, and 2c are radio wave transceivers for transmitting and receiving weak radio waves, 3 is a watt hour meter that is a device connected to the radio wave transceiver 2a, and 4 is a radio wave transmitter. A controller 5 is a device connected to the radio transceiver 2b, and 5 is an air conditioner, 6a, 6b, which is a device connected to the radio transceiver 2c.
6c and 6d are weak radio waves transmitted and received between the repeaters 1a, 1b and 1c and the radio wave transceivers 2a, 2b and 2c, 7a is from the repeater 1a to the repeater 1b, and 7b is from the repeater 1b to the repeater 1c. Infrared signal to be transmitted, 8 is ceiling, 9 is floor, 1
0 is a wall. Note that 2a may be a radio wave transmitter and 2c may be a radio wave receiver.

In FIGS. 2 and 3, reference numeral 11 denotes an infrared transmitting / receiving section disposed in four directions on four sides of a repeater 1b mounted on the ceiling 8, and 12 denotes a weak radio transmitting / receiving antenna constituting a radio transmitting / receiving section. , 13 is a control unit for controlling the function of the repeater 1b, 14 is a power supply, 15 is a mode switching switch, 16 is a microcomputer (hereinafter referred to as a microcomputer), and 17 is a microcomputer which processes an infrared signal received by the infrared transmitting / receiving unit 11 and processes the infrared signal. An infrared reception data processing unit 18 for receiving the data as infrared radio wave reception data into the microcomputer 16;
Processing the infrared transmission data from the infrared transmission / reception unit 11
An infrared transmission data processor for transmitting an infrared signal to the
Is a radio wave transmission data processing unit that processes weak radio wave transmission data from the microcomputer 16 and sends out a high-frequency electric signal to the weak radio wave transmitting / receiving antenna 12.
6 is a radio wave reception data processing unit for taking in as weak radio wave reception data. As described above, the infrared transmitting / receiving unit 11
Are arranged in four directions so that other repeaters can be installed at four places.

In this embodiment, the controller 4 analyzes the indication value of the watt-hour meter 3 sent at regular time intervals, for example, every 20 minutes, so that the integrated power amount does not increase beyond a certain value. This is an example of a system for controlling facilities such as an air conditioner 5. The basic data flow in this embodiment will be described below.

First, an instruction value of the watt hour meter 3 is transmitted from the radio wave transceiver 2a at a fixed time interval as weak data 6a as data addressed to the radio wave transceiver 2b connected to the controller 4. This weak radio wave 6a is transmitted to the repeater 1a.
And is converted into an infrared signal 7a and transmitted. The infrared signal 7a is received by the repeater 1b, converted into a weak radio wave 6b and transmitted, and transmitted to the radio wave transceiver 2b.
And passed to the controller 4. The controller 4 accumulates this data and predicts the integrated power for a certain period. According to the predicted value, control data for suppressing the power consumption of the air conditioner 5 is created, transferred to the radio wave transceiver 2b, and transmitted as weak data 6c as data addressed to the radio wave transceiver 2c. This weak radio wave 6c is received by the repeater 1b, converted into an infrared signal 7b, and transmitted. The infrared signal 7b is received by the repeater 1c, converted into a weak radio wave 6d and transmitted here, received by the radio wave transceiver 2c, and the air conditioner 5 is controlled based on the received data.

In the infrared relay system configured as described above, when a shield such as the wall 10 or a partition exists, or when the distance between the radio wave transceivers 2a, 2b, and 2c is long and a weak radio wave does not propagate. However, the propagation of the infrared signal by the repeaters 1a, 1b, 1c attached to the ceiling 8 makes it possible to extend the communication distance.

Next, the detailed operation of the repeater will be described with reference to the flowcharts of FIGS. 4, 5 and 6, taking the repeater 1b as an example. First, when the infrared signal 7a from the repeater 1a is received by the infrared transmitting / receiving unit 11, step S in FIG.
The process proceeds from step 1 to steps S2 and S3, where the infrared signal is converted into digital data by the infrared data processing unit 17, and the microcomputer 16 is notified of infrared reception,
In step S4, the received data is taken into the microcomputer 16, and in step S5, the destination of the received data is checked, and the destination is determined by the radio wave transceiver 2 managed by the repeater 1b.
If b, the process proceeds to step S6, where a weak radio wave transmission / reception frame is created and transferred to the radio wave transmission data processing unit 19, converted into a high frequency signal for weak radio wave transmission in step S7, and transmitted to the weak radio transmission / reception antenna in step S8. A weak radio wave 6b is transmitted from the subwoofer 12. On the other hand, if the destination of the received data is not the radio wave transceiver 2b, the process proceeds from step S5 to step S9, where an infrared transmission data frame is created and transferred to the infrared transmission data processing unit 18;
At 0, the signal is converted into an infrared signal (optical signal). At step 11, the signal is transmitted by the infrared transmitting / receiving unit 11 in four directions.

Weak radio wave 6c from radio wave transceiver 2b
Are received by the weak radio wave transmitting / receiving antenna 12, the steps S12 to S13 and S1 in FIG.
The process proceeds to step 4, and the data is converted into digital data in the radio wave reception data processing unit 20, the reception of the weak radio wave is notified to the microcomputer 16, the reception data is taken into the microcomputer 16 in step S15, and the infrared transmission data frame is created in step S16. The data is transferred to an infrared transmission data processing unit 18, converted into an infrared signal in step 17, and transmitted in four directions by the infrared transmission / reception unit 11 in step 18.

In this embodiment, the repeater 1a is a radio wave transceiver 2a, and the repeater 1b is a radio wave transceiver 2b.
That the repeater 1c manages the radio wave transceivers 2c, respectively, and registers the radio wave transceivers managed by these repeaters and the devices connected thereto,
In addition, when the radio wave transceiver and the device are out of the management range due to movement or the like, it is necessary to delete the registration. The registration and registration deletion procedures will be described below. Therefore, each of the repeaters 1a, 1b, and 1c is provided with a mode switching switch 15 that can be switched between a normal operation mode, a management radio wave transceiver registration mode, and a registration deletion mode thereof.

When the mode switching switch 15 is switched from the normal operation mode to the registration mode for registering a new radio wave transceiver, the process proceeds from step S31 to step S32 and step S33 in FIG. The weak radio signal from the transceiver is received, and in step S34, the address of the transmission source radio wave transceiver is stored and held in the memory of the microcomputer of the repeater. If you want to delete the registered radio wave transceiver,
The mode switching switch 15 is switched to the registration deletion mode, and steps S32 to S35 and step S35 are performed.
Proceeding to 36, the weak radio signal from the radio wave transceiver to be deleted is received, and the address of the transmission source radio wave transceiver is deleted from the memory of the microcomputer of the repeater in step S37.

Embodiment 2 FIG. 7 to 9 show a second embodiment of the present invention. FIG. 7 is a system configuration diagram, FIG. 8 is a schematic configuration diagram of a repeater, and FIG. 9 is a block diagram showing a circuit configuration of the repeater. In the figure, 1a, 1b, 1c are repeaters, 2a, 2b, 2c are radio wave transceivers, 3 is a watt-hour meter, 4 is a controller, 5 is an air conditioner, 6a, 6b, 6
c and 6d are weak radio waves, 7a and 7b are infrared signals, 8 is a ceiling, 9 is a floor, 10 is a wall, 11 is an infrared transmitting and receiving unit, 12 is a weak radio transmitting and receiving antenna, 13 is a control unit, 14 is a power supply,
16 is a microcomputer, 17 is an infrared reception data processing unit, 18
Is an infrared transmission data processing unit, 19 is a radio wave transmission data processing unit, 20 is a radio wave reception data processing unit, and the above is the same as in the first embodiment.

Numeral 21 denotes a ceiling projecting portion such as a beam projecting from the ceiling 8. If the infrared transmitting / receiving section 11 is arranged close to the ceiling 8 as in the first embodiment, the transmitted and received infrared rays are blocked. In this embodiment, the infrared transceiver 1
Numerals 1 are arranged in four directions on the side of the lower end portion 4 of the weak radio wave transmitting / receiving antenna 12 so as to be able to communicate avoiding the ceiling projection.

Also in this embodiment, the controller 4 analyzes the indicated value of the watt-hour meter 3 sent at regular time intervals, for example, every 20 minutes, so that the integrated power amount does not increase beyond a certain value. This is a system for controlling facilities such as the air conditioner 5 and the like, and the basic data flow and the detailed operation of the repeater and the like are completely the same as those in the first embodiment, and therefore description thereof is omitted.

Embodiment 3 FIG. FIG. 10 is a system configuration diagram of Embodiment 3 of the present invention. In the figure, 1b and 1c are repeaters, 2b and 2c are radio wave transceivers, 4 is a controller, 5 is an air conditioner, and 6b, 6c and 6d are Weak radio wave, 7
a and 7b are infrared signals, 8 is a ceiling, 9 is a floor, and the above are the same as in the first embodiment. The only difference from the first embodiment is that the radio wave transceiver 2b and the radio wave transceiver 2
c, there is no wall 10 that shields the radio wave, and the weak radio wave 6e from the radio wave transceiver 2b is directly transmitted to the radio wave transceiver 2b.
c may be reached.

Therefore, in this embodiment, the path from the radio wave transceiver 2b to the repeater 1b with the weak radio wave 6c, to the repeater 1c with the infrared signal 7b, to the radio wave transceiver 2c with the weak radio wave 6d, The same data is transmitted from the radio transmitter / receiver 2b via the weak radio wave 6e directly to the radio radio transmitter / receiver 2c via two routes, whereby the air conditioner 5 connected to the radio radio transceiver 2c performs the same operation twice. A malfunctioning operation such as being repeated is performed. In order to prevent this, in this embodiment, a transmission number of about 2 bits is added to a transmission frame transmitted from the radio wave transceiver 2b for each same destination.

For example, the first transmission frame from the radio wave transceiver 2b to the radio wave transceiver 2c has a transmission number of "00", and the next transmission frame of different data has a transmission number of "01". A transmission number is added to the third transmission frame, such as “10”, fourth “11”, and fifth “00”. As described above, the transmission frame is transmitted with the transmission number incremented by +1 added to each transmission destination address every time transmission is performed. Therefore, on the receiving side, "is the frame transmitted twice?" Is the frame received twice on another route? ", And in the latter case, the frame can be discarded. By adopting such a frame configuration, even if the same frame is received twice, it can be easily identified and the operation of the connected device can be kept normal.

Also, in the repeater, when an infrared signal of exactly the same frame is received from a plurality of repeaters, for example, when the relayed infrared signal returns via another repeater, duplicate reception is performed. The frame can be discarded, and the transmission of the same frame is not repeated.

Embodiment 4 FIG. 11 is a flowchart showing a process after infrared reception of the repeater according to Embodiment 4 of the present invention. In the first embodiment, the radio wave transceiver managed by the repeater is registered and normally fixed. However, the processing method after the infrared reception of the repeater in the fourth embodiment is based on the radio wave transceiver and its connection. This is suitable when the device to be moved frequently moves between the management ranges of a plurality of repeaters. Hereinafter, a process performed by the repeater of this embodiment after receiving infrared rays will be described. FIG. 3 is also applied to this embodiment.

First, when an infrared signal 7a from the repeater 1a is received by the infrared transmitting / receiving unit 11, step S
From step 41, the process proceeds to step S42 and step S43, where the infrared signal is converted into digital data in the infrared reception data processing unit 17, and the microcomputer 16 is notified of infrared reception.
The process proceeds to step S45, where a weak radio wave transmission / reception frame and an infrared transmission data frame are created and transferred to the radio wave transmission data processing unit 19 and the infrared transmission data processing unit 18, respectively. The signal is converted into a high-frequency signal for transmitting a weak radio wave by the unit 19, and is converted into an infrared signal by the infrared transmission data processing unit 18. Each is sent. Thus, when an infrared signal is received from one of the repeaters, all the received infrared signals are converted into weak radio waves and transmitted,
The infrared signal is also converted into digital data, and the digital data is inversely converted into an infrared signal, amplified and transmitted to the other repeater.

Embodiment 5 In the first embodiment, the weak radio wave transmitted from the radio wave transceiver is converted into infrared light by the repeater and transmitted in all directions, but the transmission destination may be limited in order to reduce power consumption. In this case, it can be realized by externally storing a table in which the transmission destination address of the weak radio wave transmission / reception frame and the infrared transmission direction corresponding to the transmission destination address are stored in a memory in the repeater.

Embodiment 6 FIG. In the first embodiment, when a weak radio wave transmitted from the radio wave transceiver is received by the repeater, it is converted into infrared light and transmitted in all directions. At the same time, the received weak radio wave is amplified. May be transmitted. As a result, a function as a repeater of a simple weak radio wave can be simultaneously performed.

Embodiment 7 In each of the above embodiments, the radio wave transceiver transmits and receives weak radio waves.
It may transmit and receive radio waves of low power. Also,
The radio wave transceiver may be a transmission-only radio wave transmitter or a reception-only radio wave receiver depending on the connected device.

Embodiment 8 FIG. In each of the above embodiments, the infrared signal is transmitted between the repeaters. However, as long as the signal is a directional wireless signal, the signal may not be the infrared signal but may be another optical signal or a laser light signal.

[0034]

According to the first aspect of the present invention, a plurality of radio wave transceivers which are provided in the same building and transmit and receive radio waves connected to respective devices are provided via a plurality of repeaters. In an information transmission system that transmits data for each device, data is transmitted by radio signals between the plurality of repeaters, so that the location may exceed the communicable distance of the radio wave transceiver or may not pass radio waves. Communication is possible with a radio transmitter / receiver in a place where the strength of the radio wave is reduced due to difficult shielding, etc. Also, wiring between repeaters is not required, equipment costs are low, and expansion of repeaters is easy. There is an effect that an information transmission system can be obtained.

According to a second aspect of the present invention, in the first aspect of the present invention, the repeater has a function of receiving a radio wave, converting the signal into an infrared signal, and transmitting the same, and a function of receiving an infrared signal, converting the signal into a radio wave, and transmitting the signal. And has the function of receiving and amplifying the infrared signal and transmitting the infrared signal, transmitting and receiving radio waves to and from the radio wave transceiver, and transmitting and receiving infrared signals to and from other repeaters. In addition to the effects of the invention described in claim 1,
An information transmission system that transmits and receives radio waves between the repeater and the radio wave transceiver, and that does not generate interference with other radio wave transceivers because communication between the repeaters is performed using infrared signals with high directivity. The effect is obtained.

According to a third aspect of the present invention, in the second aspect of the present invention, the repeater is provided on the ceiling of the building, and the infrared transmitting / receiving section is provided at a lower end of the antenna section for transmitting and receiving radio waves. In addition to the effects of the invention of the present invention, infrared signals transmitted and received between repeaters are not blocked by a protrusion from the ceiling, so that repeaters can be installed in various places, and various systems can be installed. There is an effect that an information transmission system that is easy to construct can be obtained.

The invention according to claim 4 is the invention according to claim 1 or 2
In the described invention, a transmission number is added to each frame of data transmitted from the radio wave transceiver, so that the data is relayed via a repeater in addition to the effects of the invention described in claim 1 or 2. Even if the same frame and the same data frame transmitted directly from the radio wave transceiver are received at the same time, by discriminating the two frames and discarding one of them, the double operation of the device by this data can be prevented, There is an effect that an information transmission system having a high degree of freedom of arrangement of the repeater and the radio wave transceiver can be obtained.

According to a fifth aspect of the present invention, in addition to the function of the second aspect, a function of receiving, amplifying, and transmitting a radio wave to the repeater is added. In addition, a function as a repeater of a simple weak radio wave can be performed at the same time, and there is an effect that an information transmission system capable of constructing various systems can be obtained.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a repeater according to the first embodiment.

FIG. 3 is a block diagram showing a circuit configuration of the repeater according to the first embodiment.

FIG. 4 is a flowchart showing a process after infrared reception of the repeater according to the first embodiment;

FIG. 5 is a flowchart showing processing after reception of a radio wave by the repeater according to the first embodiment.

FIG. 6 is a flowchart showing registration processing of a radio wave transceiver managed by the repeater according to the first embodiment;

FIG. 7 is a system configuration diagram showing a second embodiment of the present invention.

FIG. 8 is a schematic configuration diagram of a repeater according to a second embodiment.

FIG. 9 is a block diagram showing a circuit configuration of a repeater according to the second embodiment.

FIG. 10 is a system configuration diagram showing a third embodiment of the present invention.

FIG. 11 is a flowchart showing processing after infrared reception of the repeater according to the fourth embodiment of the present invention.

FIG. 12 is a system configuration diagram showing a conventional information transmission system.

[Explanation of symbols]

1a, 1b, 1c repeater, 2a, 2b, 2c radio wave transceiver, 3 watt-hour meter (equipment), 4 controller (equipment), 5 air conditioner (equipment), 6a, 6b, 6c, 6
d Weak radio waves (wireless radio waves), 7a, 7b Infrared signals (wireless signals), 8 ceilings, 9 floors, 10 walls, 11 infrared transmission / reception units, 12 weak radio transmission / reception antennas (antenna units), 21 ceiling projections.

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI H04B 10/22

Claims (5)

[Claims] 1. A plurality of radio wave transceivers, which are provided in the same building and each transmit and receive radio waves connected to each device, transmit data for each device via a plurality of repeaters. An information transmission system, wherein data is transmitted by radio signals between the plurality of repeaters. 2. A repeater receives a radio wave, converts it to an infrared signal, and transmits it; a function of receiving an infrared signal, converts it to a radio wave, and transmits the signal; and receives and amplifies the infrared signal, and transmits the infrared signal. 2. The information transmission system according to claim 1, wherein the information transmission system has a function of transmitting and receiving radio waves to and from a wireless radio transceiver and transmitting and receiving infrared signals to and from another repeater. 3. The information transmission system according to claim 2, wherein the repeater is provided on a ceiling of the building, and an infrared transmitting / receiving unit is provided at a lower end of an antenna unit for transmitting / receiving a radio wave. 4. The information transmission system according to claim 1, wherein a transmission number is added to each frame of data transmitted from the radio wave transceiver. 5. The information transmission system according to claim 2, wherein a function of receiving and amplifying the radio wave and transmitting the radio wave is added to the repeater.