JP2000134369A - Radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio communication system capable of simply and easily testing the propagation of radio waves. SOLUTION: When starting a radio wave propagation test, the test switch of a wireless base unit 6 is turned on (step 30). Thus, the wireless base unit 6 is turned into signal transmission inhibit mode. A wireless hand set 7 transmits a test signal to the wireless base unit 6 (step 31). When the signal is received, the wireless base unit 6 turns on an indicator for reception confirmation or sounds a buzzer but does not send the test signal to a center 2 (step 32). At the time of test end, by turning off a test switch 10 of the wireless base unit 6, the signal transmission inhibit mode is canceled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication system for transmitting an alarm in conjunction with an alarm attached to a gas meter or the like.

[0002]

2. Description of the Related Art Conventionally, when a gas leak or the like is detected indoors,
Wireless communication systems that notify a center and automatically shut off a gas meter or the like have been developed. As such a system, there is a wireless communication system as shown in FIG. The wireless communication system 101 includes a center 102, a telephone line 10
5, a wireless master device 106, a wireless slave device 107, a detector 108 and the like.

[0005] The center 102 is connected to a wireless master device 106 via a telephone line 105 and performs communication. Wireless base unit 10
6 and the wireless handset 107 are wirelessly connected using a radio wave such as a low-power wireless standard. The wireless handset 107 is connected to a detector 108 for detecting a gas leak or the like.

By the way, when the wireless master device 106 and the wireless slave device 107 are installed, the radio wave transmitted from the wireless slave device 107 is weak depending on the installation location, and the wireless master device 106
May not be received normally. For this reason, it is necessary to make the wireless slave unit 107 issue a test report and confirm whether the wireless master unit 106 can receive the signal normally.

[0005]

However, as shown in FIG. 5, when a test notification is issued from the wireless slave device 107 to the wireless master device 106 (step 111), the wireless master device 106
Transmits the received test signal to the center 102 (step 112), the transmission operation on the side of the wireless master device 106 must be canceled, and the radio wave propagation test of the wireless communication system is performed. There was a problem that it became complicated.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a radio communication system capable of performing a radio wave propagation test simply and easily.

[0007]

In order to achieve the above-mentioned object, the present invention comprises a wireless master unit connected to a center and a wireless slave unit connected to a device. A wireless communication system in which communication is performed between the center and the device by performing communication with a wireless slave device, wherein the wireless master device transmits a test signal transmitted from the wireless slave device. A wireless communication system having a mode in which information is not transferred to a center.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of a wireless communication system 1 according to an embodiment of the present invention. As shown in FIG. 1, the wireless communication system 1 includes a center 2, a telephone line 5, a wireless master device 6, a wireless slave device 7, a detector 8, and the like.

The center 2 and the wireless base unit 6 are connected via a telephone line 5, and the wireless base unit 6 and the wireless slave unit 7 use radio waves of a low power wireless standard or the like. Connected wirelessly. The wireless handset 7 is connected to a detector 8 for detecting a gas leak or the like. Both the wireless master unit 6 and the wireless slave unit 7 are driven using a battery or a commercial AC power supply as a power supply.
The wireless handset 7 is connected to the detector 8, but may be a gas meter, an electric meter, or a water meter.

Normally, when the detector 8 detects a gas leak or the like, an alarm signal is transmitted to the wireless slave unit 7, and the wireless slave unit 7 transmits an alarm signal to the wireless master unit 6 when receiving the alarm signal. The wireless master device 6 analyzes the received information and notifies the center 2 via the telephone line 5.

In this embodiment, the wireless master device 6
Is provided with a test switch 10. At the start of the radio wave propagation test, the test switch 10 is turned on. As a result, the wireless master device 6 is set to a mode in which the transfer to the center 2 is prohibited. During the transfer inhibition mode, the wireless master device 6
Is not transmitted to the center 2. At the end of the test, the test switch 10 is turned off. Thereby, the wireless master device 6 cancels the transfer prohibition mode.

FIG. 2 is a block diagram showing the configuration of the wireless master device 6. The wireless master device 6 includes a network communication control circuit 11, a message information control circuit 12, a modulation / demodulation circuit 13, a power supply circuit 14, a timer control circuit 15, and the like. The power supply circuit 14 supplies power. The timer control circuit 15 sends a time signal to the message information control circuit 12. The test switch 10 is connected to the message control circuit 1
When the test switch 10 is turned on, the electronic mail information control circuit 12 has a function of prohibiting the transmission to the center 2. The antenna 16 is connected to the modulation / demodulation circuit 13, and sends a radio wave received from the wireless slave 7 to the modulation / demodulation circuit 13. The modulation / demodulation circuit 13 demodulates the received signal. The message information control circuit 12 analyzes the message received from the modem circuit 13. The network communication control circuit 11 sends the analyzed received message to the center 2 via the telephone line 5.

The network communication control circuit 11 receives the message from the center 2 via the telephone line 5 and sends the message to the message information control circuit 12. The telegram information control circuit 12 analyzes the telegram received from the network communication control circuit 11 and sets the telegram information to the wireless client 7-2. The modulation and demodulation circuit 13 modulates the transmission signal and transmits the modulated signal from the antenna 16.

FIG. 3 is a block diagram showing the configuration of the wireless slave unit 7. As shown in FIG. The wireless slave device 7 includes a modulation transmission circuit 21, a message information control circuit 22, a signal detection circuit 23, a power supply circuit 24, a timer control circuit 25, and the like. The power supply circuit 24 supplies power. The timer control circuit 25 sends a time signal to the message information control circuit 22. The signal detection circuit 23 detects the alarm signal sent from the detector 8 and transmits the alarm signal to the message information control circuit 22. The electronic message information control circuit 22 creates an electronic message for transmitting information such as gas leakage, and the modulation sending circuit 21 modulates the electronic message and sends the modulated electronic message from the antenna 26.

The communication procedure of turning off the test switch 10 of the wireless master device 6 to turn on the transmission inhibition mode and prohibiting transmission to the center 2 at the time of test issuance according to the present embodiment will be described in detail. I do. FIG. 4 shows a communication procedure in the transfer prohibition mode at the time of test issuance. As shown in FIG. 4, at the start of the radio wave propagation test, the test switch of the radio cell station 6 is turned on (step 30). As a result, the wireless master device 6 enters the transfer inhibition mode. Wireless slave device 7 transmits a test signal to wireless master device 6 (step 31). Wireless base unit 6
Receives a signal, turns on an indicator lamp (not shown) for reception confirmation or sounds a buzzer (not shown), but does not transmit a test signal to the center 2 (step 32). ). At the end of the test, the transfer inhibition mode is released by turning off the test switch 10 of the wireless master device 6.

As described above, according to the present embodiment, when a test is issued, the test switch 10 of the wireless master device 6 is turned on to enter the transfer inhibition mode, and the transfer to the center 2 is inhibited. The radio wave propagation test can be easily performed without causing confusion in the center 2.

Next, another embodiment will be described. In the present embodiment, the test switch 10 is not provided in the wireless master device 6,
For a predetermined period of time after the power of the radio cell station 6 is turned on, the mode is automatically set to the transfer inhibition mode. For example, for 5 minutes after the power of the wireless master device 6 is turned on, the transfer to the center 2 is prohibited, and during this time, the radio wave propagation test is performed.

As described above, according to this embodiment, the mode is automatically set to the transfer inhibition mode to the center 2 for a predetermined time after the power of the wireless master device 6 is turned on. By doing so, a radio wave propagation test can be easily performed without causing confusion in the center 2.

It should be noted that the present invention can be used for other than the wireless communication system 1 as shown in FIG. For example, the wireless master device 6 can be used even when it is connected to the center 2 by a dedicated line or wirelessly.

[0020]

As described above in detail, according to the present invention, it is possible to provide a radio communication system capable of performing a radio wave propagation test simply and easily.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a wireless communication system 1 according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a wireless master device 6;

FIG. 3 is a block diagram showing a configuration of a wireless handset 7;

FIG. 4 is a diagram showing a communication procedure in a transfer prohibition mode when a test is issued.

FIG. 5 is a schematic configuration diagram of a conventional wireless communication system 101.

[Explanation of symbols]

 1 Wireless communication system 2 Center 5 Telephone line 6 Wireless base unit 7 Wireless slave unit 8 Detector 10 Test switch 11 Network communication Control circuit 12 Message information control circuit 13 Modulation / demodulation circuit 14, 24 Power supply circuit 15, 25 Timer control circuit 16, 26 Antenna 21 Modulation transmission circuit 22 … Message information control circuit 23 ……… Signal detection circuit

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Claims (4)

[Claims] 1. A wireless master device connected to a center and a wireless slave device connected to a device, wherein communication between the wireless master device and the wireless slave device causes the center to communicate with the center. A wireless communication system for performing communication with the device, wherein the wireless master device has a mode in which a test signal transmitted from the wireless slave device is not transferred to a center. . 2. The radio base station is provided with a test switch for performing a radio wave propagation test, and does not transmit a test signal transmitted from a radio personal station to a center when the test switch is operated. The wireless communication system according to claim 1, wherein 3. The wireless communication apparatus according to claim 1, wherein the wireless master unit does not transfer a test signal transmitted from the wireless slave unit to the center for a predetermined time after the power is turned on. system. 4. The wireless communication system according to claim 1, wherein the device is one of a detector, a gas meter, a water meter, and an electric meter.