WO2002014962A1

WO2002014962A1 - Receiving system

Info

Publication number: WO2002014962A1
Application number: PCT/JP2001/006900
Authority: WO
Inventors: Tetsuo Makino; Yoichi Takahashi; Yukio Katayanagi
Original assignee: Nippon Television Network Corporation
Priority date: 2000-08-10
Filing date: 2001-08-10
Publication date: 2002-02-21
Also published as: AU2001278704A1; JP4917239B2

Abstract

A receiving antenna (2) installed on the roof of a building (1) receives a long wave, which is radiated as very weak wave from cables (6) provided on individual floors of the building (1). Radio-regulated clocks (7) receive the radiated wave to keep accurate time.

Description

Description Reception system Technical field

TECHNICAL FIELD The present invention relates to a receiving system for receiving a long-wave radio wave of a radio-controlled timepiece. In particular, by transmitting a received long-wave radio wave by an electric field or a magnetic field, the long-wave radio wave does not normally reach and the time correction function of the radio-controlled timepiece is used. The present invention relates to a system and a method capable of using a time adjustment function of a radio clock even in a place where it is not possible to do so. Background art

Increasing the precision of clocks has become very advanced with the advancement of quartz clocks. However, in order to further improve the time accuracy, it is necessary to make external adjustments to the quartz clock at certain intervals. Clocks with a radio wave correction function, which has the function of correcting the time using the time signal of a radio or television broadcast, have already been introduced as equipment clocks and VTRs.

Some long standard radio waves have time calendar information modulated as a time code, and are widely used in Europe. By using the radio wave with the time code, it is not necessary to adjust the time of the clock in advance, unlike a clock with a radio wave correction function that uses the time signal of a radio TV broadcast, and the time of the clock is adjusted in advance. If the radio wave correction is completed even when the radio is not turned on, the time can be captured accurately. Therefore, a radio-controlled clock that receives time-coded radio waves not only has accurate time but also does not require time adjustment. Therefore, it is possible to supply a watch that is very easy to use.

However, the wavelength of long waves is long, so the range that can be received is limited.For example, facilities such as buildings can receive only a part of the window side, and the standard of long waves is The radio wave did not arrive and the time adjustment function of the radio clock could not be used.On the other hand, in places where time management was strict, such as at television stations, the time was adjusted for the clock installed in the station at predetermined intervals. The time correction reference signal was being input from the laid cable.

However, a new cable had to be laid along with the relocation of the clock, which required enormous costs. There was no need to lay the cable, and there was a demand to use a low-cost radio clock. Disclosure of the invention

An object of the present invention is to solve the above problems.

Further, an object of the present invention is to transmit a received long-wave radio wave to a facility by an electric field or a magnetic field, so that a long-wave radio wave can be received even in a place where a long-wave radio wave cannot be normally received. An object of the present invention is to provide a system and a method that can use a time correction function of a radio-controlled timepiece.

An object of the present invention is to provide a long-wave radio wave receiving system for receiving a long-wave radio wave for time correction of a radio-controlled timepiece,

A receiving antenna for receiving long-wave radio waves for correcting radio-wave clocks; and a radio-leakage cable connected to the receiving antenna and routed inside the facility to emit very weak radio waves.

This is achieved by a radio wave receiving system characterized by having: In addition, it further has a radio clock that receives long-wave radio waves leaked from the radio wave leaking cable.

The receiving antenna can be a loop antenna or a wire antenna.

Further, it is preferable that the radio wave leaking cable is routed in a loop shape, and it is more preferable that a plurality of radio wave leaking cables are routed in a loop shape so as to be adjacent to each other.

Further, it is preferable to have an adjusting means which is connected to the receiving antenna and the radio wave leaking cable and adjusts the receiving intensity of the long wave radio wave on each floor in the facility.

A receiving antenna for receiving a long wave radio wave for correcting a radio clock, and a wire antenna connected to the receiving antenna and routed in the facility to transmit a very weak radio wave.

This is achieved by a long-wave radio wave receiving system characterized by having:

It further includes a radio clock that receives the long-wave radio wave transmitted from the wire antenna.

The receiving antenna can be a loop antenna or a single antenna.

In addition, it is preferable to arrange the wire antennas in a loop, and it is more preferable to arrange a plurality of wire antennas in a loop so as to be adjacent to each other.

Adjusting means connected to the receiving antenna and the wire antenna to adjust the reception intensity of the long-wave radio wave on each floor in the facility. It is preferable to have

A receiving antenna for receiving a long-wave radio wave for correcting a radio-controlled timepiece; a cable connected to the receiving antenna, routed in a facility; and a long-wave radio wave re-emission means connected to the cable and re-radiating the long-wave radio wave.

This is achieved by a long wave radio wave receiving system characterized by having:

It further includes a radio clock for receiving the long-wave radio wave radiated from the long-wave radio wave re-radiating means.

The receiving antenna can be a loop antenna or a wire antenna.

In addition, a ferrite bar antenna can be considered as a means for re-radiating long-wave radio waves.

Further, it is preferable to have an adjusting means connected to the receiving antenna and the long wave radio wave re-radiating means, and for adjusting the reception intensity of the long wave radio wave on each floor in the facility.

An object of the present invention is a receiving system for receiving a time correction signal of a radio controlled watch,

A receiving antenna for receiving a radio-wave clock correction signal of a long-wave radio wave; and a conductive cable or a wire connected to the reception antenna, routed in the facility to form a magnetic field space, and transmitting the radio-clock correction signal. When

This is achieved by a radio wave receiving system characterized by having: It further includes a radio clock that receives a clock correction signal transmitted in the magnetic field space.

The receiving antenna can be a loop antenna or a wire antenna.

The conductive cables or wires are preferably routed in a loop, and more preferably, a plurality of conductive cables or wires are routed in a loop so as to be adjacent to each other. New

Further, it is preferable to have an adjusting means connected to the receiving antenna and the conductive cable or electric wire for adjusting the receiving intensity of the long-wave radio wave on each floor in the facility.

An object of the present invention is a time adjustment method for adjusting the time of a radio clock using a long wave radio wave for time adjustment,

Receiving a long wave radio wave for radio wave clock correction;

Re-radiating the received long-wave radio waves into the facility; receiving the re-radiated long-wave radio waves and correcting the time based on the received long-wave radio waves;

This is achieved by a time adjustment method characterized by having the following.

Further, an object of the present invention is a time adjustment method for adjusting the time of an electronic clock using a long wave radio wave for time adjustment,

Receiving a long wave radio wave correction signal; forming a magnetic field space by an induced magnetic field with an electric wire connected to the receiving antenna and routed in the facility; and transmitting the radio clock correction signal in the facility. Communicating,

Receiving the transmitted radio clock correction signal and correcting the time based on the received radio clock correction signal;

This is achieved by a time adjustment method characterized by having the following. The object of the present invention is a structure,

A receiving antenna for receiving a long-wave radio wave for correcting a radio-controlled timepiece is arranged, and an electric wave leaking cable that is connected to the receiving antenna and emits a very weak radio wave is routed or buried in a floor or a ceiling. This is achieved by a structure characterized in that:

The object of the present invention is a structure,

A receiving antenna for receiving a long-wave radio wave for correcting a radio-controlled timepiece is disposed, and a conductive cable connected to the receiving antenna and forming a magnetic field space in the structure to transmit a signal for correcting a radio-controlled timepiece is provided. This is achieved by structures characterized by being routed or buried in the floor or ceiling. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a diagram for explaining the first embodiment, FIG. 2 is a diagram for explaining the first embodiment, and FIG. 3 is a diagram for explaining the first embodiment. 4 is a diagram for explaining the first embodiment, FIG. 5 is a diagram for explaining the third embodiment, and FIG. 6 is a diagram for explaining the fourth embodiment. FIG. 7 is a diagram for explaining the fourth embodiment, FIG. 7 is a diagram for explaining the fourth embodiment, and FIG. 8 is a diagram for explaining the fourth embodiment. FIG. 9 is a diagram for explaining the fourth embodiment, and FIG. 10 is a diagram for explaining the fourth embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

A first embodiment of the present invention will be described.

FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are views for explaining the first embodiment. It should be noted that a long-wave radio wave receiving system according to the present embodiment is provided. Building 1 will be described as an example.

As shown in FIG. 1, a receiving antenna 2 for receiving a long-wave radio wave used for time adjustment of a radio clock is installed on the roof of a building 1. The receiving antenna 2 is preferably a loop antenna in consideration of the fact that the received radio wave is a long wave having a long wavelength. In addition, a single antenna may be used because of its large gain.

As shown in FIG. 2, the bandpass filter 13 and the amplifier 4 are connected to the receiving antenna 2. The node path filter 3 filters a signal other than an extra signal from the radio wave received by the reception antenna 2, and the filtered signal is amplified by the amplifier 4. At this time, it is necessary to adjust the output of the amplifier 4 so as to have a low impedance so as to withstand signal distribution described later. Therefore, the impedance is adjusted by the distributor and the amplifier 4 described later.

On each floor of the pill 1, a distributor 5 for distributing the signal output from the amplifier 4 is provided. The splitter 5 is configured so that the impedance of the amplifier 4 is adjusted with that of the amplifier 4 and the signal is uniformly distributed to each floor.

A leaking cable 6 is connected to each distributor 5, and the leaking cable 6 is routed in the ceiling 8 on each floor of the building 1. From the leakage cable 6, an extremely weak radio wave is radiated by the electric field.

As a wiring method, as shown in Fig. 3, it is preferable to wire in a loop shape considering the characteristic of long waves. The end of the leaky cable 6 to be routed may not only be open as shown in FIG. 3 but may be short. Further, as shown in FIG. 4, the leakage cable 6 may be routed so as to form a plurality of loops.

In the present embodiment, the leaky cable 6 is routed in the ceiling portion 8, but may be routed on the floor portion. Also, a plurality of leaky cables 6 may be routed in a loop.

The long-wave radio wave radiated from the leaky cable 6 is received by the radio clock 7, and the radio clock 7 corrects the time using the received long-wave radio. Since the configuration of the radio controlled watch 7 is a widely known technique, the details of the configuration are omitted.

In addition, the above-mentioned leaked radio waves should be radiated as very weak radio waves that do not violate the Radio Law to prevent the outside of Building 1 from being affected by the leaked radio waves.

A second embodiment will be described.

The second embodiment is characterized in that a wire antenna is used in place of the leakage cable 6 of the first embodiment.

By using a single antenna, the same effect as in the first embodiment can be obtained by retransmitting the long-wave radio waves received by the receiving antenna 2.

A third embodiment will be described.

The third embodiment is characterized by having re-radiation means such as an antenna for re-radiating radio waves, instead of the leaky cable 6 and the wire antenna in the first and second embodiments described above. And Hereinafter, the configuration will be described in detail with reference to FIG.

The cable 20 is connected to the distributor 5. The cable 20 is configured by connecting the cables sequentially by the distributor 21. Then, cables 20 are routed inside the ceiling of each floor. Also, A coiled ferrite bar antenna 22 is connected to each distributor 21, and a very weak radio wave is radiated from the ferrite bar antenna 22. The radiated extremely weak radio wave is received by the radio clock 7 as in the first embodiment, and is used for time correction.

A fourth embodiment will be described.

In the fourth embodiment, the concept of signal transmission by a magnetic field is used instead of the concept of re-radiation by an electric field in the first embodiment.

This is because the received radio wave is a long wave, which is a very long wave, so a very long leaky cable 6 must be routed inside the facility to re-emit it, but the signal from the magnetic field By using the concept of signal transmission, it was possible to transmit the received long-wave radio waves to the radio clock inside the facility simply by routing a relatively short cable inside the facility. It became clear from the result.

Therefore, the fourth embodiment is characterized in that a conductive single-wire cable 40 is used in place of the leaky cable 6 in the first embodiment.

FIG. 6, FIG. 7, FIG. 8, FIG. 9, and FIG. 10 are diagrams for explaining the fourth embodiment. 6, 7, 8, 9, and 10, components having the same configuration as the above-described embodiment are denoted by the same reference numerals. Further, as a facility in which the long-wave radio wave reception system of the present embodiment is installed, a building 1 will be described as an example in the same manner as in the first embodiment.

On the roof of Building 1, a receiving antenna 2 is installed to receive the long-wave radio waves used to adjust the time of the radio clock. This receiving antenna 2 is a loop antenna, considering that the received radio wave is a long wave having a long wavelength. In addition, a wire antenna or a ferrite bar antenna that takes in a magnetic field may be used because of its large gain.

As shown in FIG. 7, the receiving antenna 2 is connected to a node path filter 3 and an amplifier 4. The bandpass filter 3 filters out signals other than extra signals from the radio wave received by the receiving antenna 2, and the filtered signal is amplified by the amplifier 4. At this time, it is necessary to adjust the output of the amplifier 4 so as to have a low impedance so as to withstand signal distribution described later. Therefore, the impedance of the antenna and the strength of the magnetic field due to the long wave from the antenna are adjusted by the distributor 5 and the amplifier 4 described later.

On each floor of the pill 1, a distributor 5 for distributing the signal output from the amplifier 4 is provided. With this distributor 5, the impedance of the amplifier 4 and the antenna is adjusted, and the signal is uniformly distributed to each floor.

For example, the input impedance of the operational amplifier (amplifier 4) is close to infinity, and the output impedance is close to zero. Therefore, the influence of the impedance adjustment amplifier (distributor 5) on the amplifier in the preceding stage is unlikely to be affected. On the other hand, the impedance of the receiving antenna 2 is of a loop type and has a resistance of about 200 to 300 Ω, so the output impedance can be easily adjusted by providing L and C circuits at the amplifier output. be able to.

For example, a single conductive cable 40 having good conductivity is connected to each distributor 5, and the single conductive cable 40 is routed in the ceiling 8 of each floor of the building 1. Have been. Then, a field by a magnetic field is formed in the space of each floor by the single-wire cable 40, and the received time correction signal of the received long-wave radio wave is transmitted to each floor in the building.

As a routing method, it is preferable to route the single-wire cable 40 in a loop to transmit signals more effectively. Further, as shown in FIG. 8, it is more preferable to arrange a plurality of single-wire cables 40 in a loop so as to be adjacent to each other.

This is because the use of a plurality of single-wire cables 40 results in a stronger magnetic field. Also, the use of multiple loops reduces the size of one loop, which reduces the distance from the cable to the center of the lowest magnetic field loop, and reduces the distance between individual loops. This is because the distributed magnetic field becomes stronger.

When arranging a plurality of single-wire cables 40, they are arranged so that the direction of the magnetic field generated by each single-wire cable 40 is the same. If the directions of the magnetic fields are different, the magnetic fields cancel each other out. Therefore, as shown in FIG. 8, the wires are arranged so that the phases of the currents of both loops are the same.

As another method of wiring, as shown in Fig. 9, one ceiling or floor is divided into multiple parts, and a single-wire cable 40 is routed every other divided part. good. Also in this case, it is the same that the wiring is performed so that the direction of the magnetic field generated by each single wire cable 40 becomes the same direction.

Furthermore, in the above-described embodiment, the single-wire cable 40 is routed in a circular shape. However, the present invention is not limited to this shape, and the lone single-wire cable 40 shown in FIG. 10 is routed in a square shape. May be. Also, a plurality of loops may be arranged concentrically. The time correction signal of the long-wave radio wave transmitted by the magnetic field formed by the single-wire cable 40 is received and detected by the radio clock 7. That is, the antenna of the radio-controlled timepiece 7 generates a terminal voltage from the detected magnetic field, and the radio-controlled timepiece 7 operates as if receiving a long-wave radio wave for the radio-controlled timepiece, and corrects the time. The radio-controlled timepiece 7 is the same as that used in the first embodiment, and does not require a special configuration for the present embodiment. Therefore, the configuration is a widely known technique, and the details of the configuration are omitted.

As described above, in the fourth embodiment, even if, for example, the area or height of the ceiling or floor cannot be sufficiently secured, and a sufficient cable length cannot be routed, the magnetic field filter is not required. By using the concept of signal transmission by the field, it is possible to transmit the received time correction signal of long-wave radio waves to the radio clock in the facility simply by routing a relatively short cable in the facility. It becomes possible.

Furthermore, by introducing the concept of a magnetic field, it is possible to simulate (calculation) in an environment where the distance between the single-wire cable 40 and the radio clock 7 is close to several to several tens of meters. As a result, sensitivity can be improved.

In each of the embodiments described above, the case where the present invention is applied to the building 1 has been described as an example. However, the present invention is not limited to a building, and may be applied to a facility such as a theater. It goes without saying that you can do it. Industrial applicability

According to the present invention, a long-wave radio wave received via a radio-leakage cable is radiated over the entire facility as a very weak radio wave. Can receive long-wave radio waves even in a deep place in a facility where long-wave radio waves do not reach, and can use the time correction function of the radio clock.

Also, by using the concept of signal transmission by magnetic field, it is possible to transmit the received long-wave radio waves to the radio clock in the facility simply by arranging a relatively short cable in the facility. It is possible.

Claims

The scope of the claims

1. A long wave radio receiving system that receives long wave radio waves for time adjustment of radio clocks,

A radio wave receiving system comprising:

2. The radio wave receiving system according to claim 1, further comprising a radio clock that receives a long-wave radio wave leaked from a radio wave leaking cable.

3. The long wave radio wave receiving system according to claim 1, wherein the receiving antenna is a loop antenna.

4. The long wave radio wave receiving system according to claim 1, wherein the receiving antenna is a single antenna.

5. The long wave radio wave receiving system according to any one of claims 1 to 4, wherein the radio wave leaking cable is routed in a loop.

6. The long wave radio wave reception system according to claim 1, wherein a plurality of radio wave leakage cables are arranged in a loop so as to be adjacent to each other.

7. The method according to any one of claims 1 to 7, further comprising an adjusting means connected to the receiving antenna and the radio wave leaking cable, the adjusting means for adjusting the reception intensity of the long wave radio wave on each floor in the facility. Long wave radio reception system.

8. A long wave radio wave receiving system for receiving a long wave radio wave for time adjustment of a radio clock,

A receiving antenna for receiving long-wave radio waves for radio wave clock correction, and a wire antenna connected to the receiving antenna and routed within the facility to transmit very weak radio waves;

A long-wave radio wave receiving system comprising:

9. The long wave radio wave receiving system according to claim 8, further comprising a radio wave clock for receiving a long wave radio wave transmitted from a wire antenna.

10. The long-wave radio wave receiving system according to claim 8, wherein the receiving antenna is a loop antenna.

11. The long wave radio wave receiving system according to claim 8, wherein the receiving antenna is a single antenna.

12. The long-wave radio wave receiving system according to any one of claims 8 to 11, wherein the wire antenna is arranged in a loop.

13. The long wave radio wave receiving system according to claim 8, wherein a plurality of wire antennas are arranged in a loop so as to be adjacent to each other.

14. An apparatus according to any one of claims 8 to 13, further comprising an adjusting means connected to the receiving antenna and the wire antenna for adjusting the reception intensity of the long-wave radio wave on each floor in the facility. The long-wave radio wave receiving system described in.

1 5. A long-wave radio wave receiving system that receives long-wave radio waves for time adjustment of radio-controlled clocks,

A long wave radio wave receiving system characterized by having:

16. The long-wave radio wave receiving system according to claim 15, further comprising a radio-controlled timepiece for receiving the long-wave radio wave radiated from the long-wave radio wave re-radiating means.

17. The long wave radio wave receiving system according to claim 15 or 16, wherein the receiving antenna is a loop antenna.

8 The receiving antenna is a single antenna. The long wave radio wave receiving system according to claim 15 or claim 16.

19. The long wave radio wave reception system according to any one of claims 15 to 18, wherein the long wave radio wave re-radiating means is a ferrite bar antenna.

20. An apparatus connected to the receiving antenna and the long-wave radio wave re-radiating means, and having an adjusting means for adjusting the reception intensity of the long-wave radio wave on each floor in the facility. The long-wave radio wave reception system described in any of the above.

2 1. A receiving system that receives the time correction signal of the radio clock,

A radio wave receiving system comprising: 22. The radio wave receiving system according to claim 21, further comprising a radio clock configured to receive a clock correction signal transmitted in a magnetic field space.

23. The long wave radio wave receiving system according to claim 21 or 22, wherein the receiving antenna is a loop antenna.

24. The long wave radio wave receiving system according to claim 13 or 14, wherein the receiving antenna is a single antenna.

25. The long wave radio wave reception system according to any one of claims 13 to 24, wherein a conductive cable or an electric wire is routed in a loop.

26. The long-wave radio wave receiving system according to any one of claims 13 to 24, wherein a plurality of conductive cables or electric wires are routed in a loop shape so as to be adjacent to each other.

27. The apparatus according to any one of claims 13 to 13, further comprising an adjusting means connected to the receiving antenna and the conductive cable or the electric wire to adjust the reception intensity of the long wave radio wave at each floor in the facility. 26. The long-wave radio wave receiving system according to any one of 26.

2 8. A time adjustment method for adjusting the time of a radio clock using long wave radio waves for time adjustment.

Receiving a long wave radio wave for radio wave clock correction;

A time adjustment method, comprising:

2 9. A time adjustment method for adjusting the time of a radio clock using long wave radio waves for time adjustment. Receiving a long wave radio wave correction signal; forming a magnetic field space by an induced magnetic field with an electric wire connected to the receiving antenna and routed in the facility; and transmitting the radio clock correction signal in the facility. Communicating,

A time adjustment method characterized by having the following.

3 0. The structure,

A receiving antenna for receiving long-wave radio waves for radio wave clock correction is arranged, and a radio-leakage cable connected to the receiving antenna and emitting very weak radio waves is routed or buried in the floor or ceiling. A structure characterized by the following. 3 1. The structure,

A receiving antenna for receiving a long-wave radio wave for correcting a radio-controlled timepiece is disposed, and a conductive cable connected to the receiving antenna and forming a magnetic field space in the structure to transmit a signal for correcting a radio-controlled timepiece is provided. A structure characterized by being routed or buried in the floor or ceiling.