JP2001283359A - Radio repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent signals outputted from a plurality of radio repeaters from being overlapped and transmitted in the case of transmitting a signal from a sensor to a receiver through a plurality of repeaters in a guard system for performing guard on the basis of a detection signal from the sensor. SOLUTION: A radio repeater 1 arranged between a transmitting means for transmitting a signal from the sensor and a receiver is provided with a receiving part 12, a transmitting part 13, a judging part 19 for judging whether a received radio signal is a radio signal outputted from the sensor or a radio signal from another radio repeater, and a receiving destination switching part 16 for setting up transmission of the radio signal from the transmitting means 13 when the received radio signal is found to be outputted from the sensor or from another radio repeater. The repeater 1 is also provided with a control part 12 for permitting transmission of the radio signal only when the receiving part 12 receives the detection signal from the sensor when the switching part 16 is set to the sensor, or permitting transmission of the radio signal only when the receiving part 12 receives the radio signal from another radio repeater when the switching part 16 is set to the repeater 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio repeater installed between a sensor detection signal transmitting means and a receiver in a security system for guarding a predetermined area using various sensors for detecting abnormalities. .

[0002]

2. Description of the Related Art Conventionally, in a security system, an abnormality detection sensor such as a sensor for detecting an intruder or a fire is installed in a security area, and when the sensor detects them, it is installed near the security area by wire or wirelessly. Was sending a detection signal to a receiver. Further, in order to streamline the security system, detection signals from a plurality of sensors are once transmitted to a sensor transmitter, and the detection signals are sometimes transmitted from the sensor transmitter to a receiver. Then, the receiver that has received the detection signal notifies the abnormality by a buzzer or a lamp on the spot, or transmits an alarm to a remote monitoring center.

[0003] In such a security system, in order to avoid the complexity of wiring work and to maintain the external appearance, the sensor or the sensor transmitter, that is, the detection signal of the sensor is transmitted from the transmitting means. In many cases, detection signals were transmitted wirelessly rather than by wire. In such a case, when the distance from the sensor detection signal transmitting means to the receiver is long or when there is a shield between them, a wireless repeater is provided.

[0004]

However, when two or more wireless repeaters are used, two or more wireless repeaters cannot receive wireless signals from one sensor or sensor transmitter. Means that the number of detection signals is one or more, the transmission and reception of wireless signals are repeated between wireless repeaters, and the receiver processes the wireless signals accurately by continuous reception in a short time There was something I couldn't do.

[0005] In addition, since the display unit for displaying the reception environment of the radio repeater usually has only two displays, "OK" and "NO",
I didn't know any more details about the receiving environment. Therefore, for example, when the test of the reception environment is “OK”, the reception environment becomes “impossible” due to some influence during the actual operation, and the transmission / reception of the radio signal may not be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and a wasteful radio signal is generated even when a plurality of repeaters are used when transmitting a signal from a sensor to a receiver. It is an object of the present invention to provide a radio repeater that does not generate any radio waves.

Another object of the present invention is to provide a wireless repeater having a display unit capable of displaying the reception status of the wireless repeater in more detail.

[0008]

The above object is achieved by the following means of the present invention.

According to a first aspect of the present invention, there is provided a wireless repeater installed between a transmitting means of a detection signal of a sensor and a receiver in a security system, wherein the receiving unit receives a wireless signal, and transmits the wireless signal. A transmitting unit, a determining unit that determines whether the received wireless signal is a wireless signal from a sensor detecting signal transmitting unit or a wireless signal from another wireless relay device, and a wireless signal from the sensor detecting signal transmitting unit or When a wireless signal of another wireless repeater is a wireless signal, a receiving destination switching unit that sets whether to transmit a wireless signal from the transmitting unit,
The receiving unit is connected to the receiving unit, the transmitting unit, the determining unit, and the receiving destination switching unit, and when the receiving destination switching unit is set to the sensor detecting signal transmitting unit side, the receiving unit transmits a wireless signal from the sensor detecting signal transmitting unit. The wireless signal is transmitted from the transmitting unit only when receiving, and when the receiving destination switching unit is set to the wireless repeater side, the wireless signal is transmitted from the transmitting unit only when the receiving unit receives a wireless signal from another wireless repeater. And a control unit for transmitting.

In the wireless repeater of the present invention, when the receiving destination switching unit is set on the side of the sensor detection signal transmitting unit, transmission is performed only when the receiving unit receives a wireless signal from the sensor detection signal transmitting unit. When the receiver is set to the wireless repeater, the transmitter sends the wireless signal only when the receiver receives a wireless signal from another wireless repeater. I do. Accordingly, even when a signal from the sensor is transmitted to the receiver using a plurality of wireless repeaters, the wireless repeater receives the signal from the sensor and the signal from the wireless repeater redundantly. Can be avoided.

According to a second aspect of the present invention, in the first aspect of the present invention, the transmitting section transmits the radio signal by adding an identification signal to the radio signal from the transmitting means of the detection signal of the sensor. A wireless repeater characterized by determining a wireless signal from a sensor detection signal transmitting unit and a wireless signal from another wireless repeater.

In the present invention, an identification signal is added to the wireless signal from the sensor detection signal transmitting means, and based on the identification signal, the discriminating section determines whether the wireless signal from the sensor detection signal transmitting means is transmitted to another wireless relay. The wireless signal from the device is determined.

[0013] The invention of claim 3 is claim 1 or claim 2.
The wireless repeater according to claim 1, further comprising a delay time switching unit that can set two or more types of time from when the receiving unit receives the wireless signal to when the transmitting unit transmits the wireless signal. It is a wireless repeater.

In the present invention, even when two radio repeaters receive a signal, one of the radio repeaters can transmit the signal with a time delay, so that the receiver side distinguishes the reception between the two. can do.

According to a fourth aspect of the present invention, there is provided the first to third aspects.
In the wireless repeater described above, two display units are provided, and a wireless signal reception environment of the reception unit is set to a lighting state of each display unit,
A wireless repeater characterized by displaying by a combination of blinking states.

The wireless repeater according to the present invention can display other types of display contents by combining the display states on the two display units.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the functions of a radio repeater according to an embodiment of the present invention. The wireless repeater 1
Control unit 11, receiving unit 12, transmitting unit 13, first display unit 1
4, a second display unit 15, a reception destination switching unit 16, a delay time switching unit 17, a storage unit 18, and a determination unit 19.

The receiving section 12 receives a radio signal from a sensor detection signal transmitting means (not shown). As long as the means for transmitting the detection signal of the sensor is built-in to the sensor, a means for transmitting a radio signal when a detection signal is input from one or more sensors, such as a sensor transmitter, may be used. is there. The transmitting unit 13 transmits a wireless signal. The first display unit 14 and the second display unit 15 are for indicating a state of reception of a wireless signal by the reception unit 12, and are respectively turned on and off.
It takes one of the blinking states.

The destination switching unit 16 determines whether the wireless signal received by the receiving unit 12 is a wireless signal from a sensor detection signal transmitting means or a wireless signal from another wireless repeater. Is set to transmit a wireless signal from the transmission unit.

The delay time switching section 17 sets two or more types of time from when the receiving section receives the radio signal to when the transmitting section transmits the radio signal. The storage unit 18 stores a sensor detection signal transmitting unit, data content of a wireless signal transmitted by another wireless repeater, and the like. The determination unit 19 compares the received wireless signal with the wireless signal stored in the storage unit 18 to determine whether the received wireless signal is a wireless signal from the sensor detection signal transmitting unit or a wireless signal from another wireless repeater. judge. In order to make the determination, the wireless signal from the wireless repeater is obtained by adding the identification signal to the wireless signal from the sensor detection signal transmitting means. For example, the address of the wireless signal from the transmission means of the detection signal of the sensor is 001 and 0
The number in the hundreds may be changed to a number other than 0 in the wireless signal from the wireless repeater (015 → 315, etc.). Needless to say, the identification signal may be added to another part of the data instead of the address part.

The control unit 11 includes a receiving unit 12, a transmitting unit 13,
The first and second display units 14 and 15, the reception destination switching unit 16, the delay time switching unit 17, the storage unit 18, and the determination unit 19 are connected,
When the receiving destination switching unit 16 is set on the sensor detection signal transmitting unit side, the transmitting unit 13 transmits the wireless signal only when the receiving unit 12 receives the wireless signal from the sensor detecting signal transmitting unit. When the first switching unit 16 is set on the wireless repeater side, the wireless signal is transmitted from the transmitting unit 13 only when the receiving unit 12 receives a wireless signal from another wireless repeater.

FIG. 2 shows a security system for transmitting a detection signal from a sensor using the wireless repeater of the present embodiment, wherein one or a plurality of sensors or a sensor transmitter 10n and a receiver 3 are provided. FIG. 3 is a schematic diagram when two wireless repeaters 1 and 2 are installed in series. The wireless repeater 2 has the same configuration as the wireless repeater 1 in FIG. The receiver 3 is installed in the vicinity of a security area, receives a detection signal from a sensor, reports an abnormality with a buzzer or a lamp on the spot, or transmits an alarm to a remote monitoring center.

In the wireless repeater 1, the receiving destination switching unit 16 is set as a sensor, and the delay time switching unit 17 is set without a delay time. In the wireless relay device 2, the receiving destination switching unit 17 is set as a wireless relay device, and the delay time switching unit 17 is set without a delay time.

FIG. 3 is a schematic diagram when a sensor and a wireless repeater are installed in parallel. In the wireless repeater 1, the reception destination switching unit 16 is set as a sensor, and the delay time switching unit 17 is set without a delay time. Wireless repeater 2
In the example, the reception destination switching unit 16 is set to the sensor, and the delay time switching unit 17 has a delay time, and is set to 1 second here. Even if this delay time is not 1 second,
When the wireless repeaters 1 and 2 receive a wireless signal from the same sensor and transmit a wireless signal to the receiver 3, the receiver 3 transmits the wireless signal from the wireless repeaters 1 and 2. Any time can be used as long as there is enough time for continuous processing. That is, if the receiver 3 receives two or more radio signals within a certain period of time, the receiver 3 may not be able to process them, and it is only necessary to be able to avoid this.

FIG. 4 shows a receiving unit 1 in the radio repeater 1.
2 and the first and second display units 14, 1
It is a figure showing the relationship with 5 display states.

Embodiment 1 The operation of the security system shown in FIG. 2 will be described. The wireless signal output by the sensor is transmitted to the receiver 3 via the wireless repeaters 1 and 2. In this case, the wireless relay device 2 does not transmit the wireless signal even when receiving the wireless signal from the sensor 10n because the receiving destination switching unit 16 is set to the wireless relay device, and thus a useless wireless signal is generated. There is no fear. Also, the wireless repeater 1
Since the receiving destination switching unit 16 is set to the sensor,
Since the wireless signal is not transmitted even when the wireless signal from the wireless relay device 1 is received, there is no possibility that a useless wireless signal is generated.
Therefore, the receiver 3 can receive only a necessary amount of the radio signal from the sensor 10n, and the reception failure due to the unnecessary radio signal does not occur.

Further, by adopting a simple configuration for switching the receiving destination, a simple operation and a low-cost system can be realized.

[Second Embodiment] The operation of the security system shown in FIG. 3 will be described. The wireless signal output from the sensor 10a is
The data is transmitted to the receiver 3 via the wireless repeater 1. Also,
The wireless signal output by the sensor 10b is transmitted to the receiver 3 via the wireless relay device 2. In that case, the wireless repeater 1
Since the receiving destination switching unit 16 is set as a sensor and does not transmit a wireless signal even when a wireless signal is received from the wireless repeater 2, there is no possibility that a useless wireless signal is generated. In addition, since the wireless relay device 2 does not transmit a wireless signal even when receiving a wireless signal from the wireless relay device 1 because the receiving destination switching unit 16 is set as a sensor, a useless wireless signal may be generated. There is no. Since the delay time switching unit 17 is set to have a delay time, the wireless repeater 2 receives a wireless signal from the sensor 10a or the sensor 10b even if both the wireless repeater 1 and the wireless repeater 2 receive the wireless signal. Since the radio signals to the receiver are transmitted at a time difference, the receiver can process the radio signals.

Therefore, the receiver can receive only a necessary amount of radio signals from the sensor, and the reception of unnecessary radio signals does not fail.

[Embodiment 3] FIG. 4 is a diagram for explaining the display displayed on the first display unit 14 and the second display unit 15 of the wireless relay device 1. When the reception test of the wireless repeater 1 is performed, if there is no problem in the reception situation, the display unit 2 is turned on after the display unit 1 is turned on after the display unit 1 is turned on.
In addition, when the reception status is OK, the first display unit 14 is turned on after the display unit 1 blinks when the reception status is OK. In addition, if the reception status has a problem, "No"
The second display unit 15 blinks after the first display unit 14 blinks. Further, when an interfering radio wave, that is, an external radio wave is received, both the display units 1 and 2 are made to blink simultaneously. With these arrangements, three or more reception states can be expressed even with two display units, and a combination of blinking and lighting enables only one color and lowers the manufacturing cost.

The reception status and the first and second display units 14 and
The relationship with 15 is not limited to this embodiment, and various changes and modifications can be made without departing from the spirit of the claims.

[0033]

As described above, according to the present invention, when the receiving destination switching unit is set to the sensor or the sensor transmitter, the receiving unit receives a radio signal from the sensor or the sensor transmitter. The wireless signal is transmitted from the transmitting unit only when the receiving unit switches to the wireless repeater side, and the wireless signal is transmitted from the transmitting unit only when the receiving unit receives a wireless signal from another wireless repeater. By doing so, useless radio signals are not generated, and the receiver does not make a reception mistake. In addition, by adopting a simple configuration for switching the receiving destination, a low-cost system that is easy to operate can be realized.

According to the second aspect of the invention, the radio signal from the sensor detection signal transmitting means and the radio signal from another radio repeater are reliably distinguished and determined.

According to the third aspect of the present invention, the time from when the receiving unit receives the radio signal to when the transmitting unit transmits the radio signal can be set to two or more types. Even if the wireless repeater receives a wireless signal from the same sensor and transmits a wireless signal, a reception error does not occur in the receiver.

Further, according to the present invention described in claim 4,
The reception status of the radio signal is indicated by the lighting states of the two display units,
By displaying the combination of the blinking states, three or more reception states can be displayed at low cost.

[Brief description of the drawings]

FIG. 1 is a block diagram of a wireless repeater of the present invention.

FIG. 2 is a diagram showing an example of a security system using the wireless repeater of the present invention.

FIG. 3 is a diagram showing another example of a security system using the wireless repeater of the present invention.

FIG. 4 is a diagram illustrating a display state of a display unit of the wireless relay device.

[Description of Signs] 1, 2 wireless repeater 12 receiving unit 13 transmitting unit 14 first display unit 15 second display unit 16 destination switching unit 17 delay time switching unit 18 storage unit 19 determination unit 3 receiver

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Claims (4)

[Claims] 1. A wireless repeater installed between a sensor detection signal transmitting means and a receiver in a security system, comprising: a receiving unit for receiving a wireless signal; a transmitting unit for transmitting a wireless signal; A determination unit that determines whether the detected wireless signal is a wireless signal from a sensor detection signal transmitting unit or a wireless signal from another wireless relay unit; and a wireless signal from the sensor detection signal transmitting unit or another wireless relay unit. A receiving destination switching unit that sets whether a wireless signal is transmitted from the transmitting unit when the wireless signal is a wireless signal from the receiving unit, a receiving unit, a transmitting unit, a determining unit, and a receiving destination switching unit. When the receiver switching unit is set on the sensor detection signal transmitting unit side, the transmitting unit transmits the wireless signal only when the receiving unit receives the wireless signal from the sensor detection signal transmitting unit. Is a wireless relay Wireless interconnecting device, characterized in that the receiving unit and a control unit for transmitting a radio signal from the transmitting unit only when receiving a radio signal from another wireless relay apparatus when it is set to the side. A transmitting unit for transmitting a radio signal by adding an identification signal to the radio signal from the transmitting means of the detection signal of the sensor;
The wireless repeater according to claim 1, wherein the determination unit determines the wireless signal from the sensor detection signal transmitting unit and the wireless signal from another wireless repeater. 3. A delay time switching unit which can set two or more types of time from when a reception unit receives a radio signal to when a transmission unit transmits a radio signal. The wireless repeater according to claim 1 or claim 2. 4. The radio communication apparatus according to claim 1, wherein two display units are provided, and a radio signal receiving environment of the receiving unit is displayed by a combination of a lighting state and a blinking state of each of the display units. A wireless repeater according to item 1.