JPH0936971A - Slave radio equipment for automatic metering radio system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently secure safety, to prevent supplied substance from being wasted and to reduce battery power consumption by immediately reporting abnormality to center equipment when that abrupt security abnormality is generated. SOLUTION: A CPU 13 monitors whether security data showing such as gas leak, pressure abnormality, battery voltage drop, water leak or over flow rate are transmitted from a meter 10 of terminal equipment or not and when those security data are received, these data are stored in a storage means 12. Then, the CPU 13 supplies power to a radio communication circuit 10 while controlling a power supplying means 11 and the data stored in the storage means 12 are transmitted through the radio communication circuit 10 to a master radio equipment means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention collects a usage amount from a terminal device such as a water meter, a gas meter, an electric energy meter, a hot water meter, a calorimeter, etc. by a slave radio,
In the automatic meter reading radio system in which the usage data is communicated to the master radio unit by wireless communication and further transmitted to the center unit by using the telephone line from the master radio unit, between the terminal unit and the master radio unit. The present invention relates to the improvement of a child radio device that performs wireless communication in.

[0002]

2. Description of the Related Art In an automatic meter reading wireless system disclosed in Japanese Patent Laid-Open No. 6-90298, a slave wireless device controls a switch means to supply power to a wireless communication circuit when a data collection time is reached. , Collect data from the terminal,
This data is transmitted to the parent wireless device via wireless communication and a wireless transmission path. On the other hand, when the master wireless device reaches the data collection time, it controls the switch means to supply power to the wireless communication circuit, receive the data transmitted from the slave wireless device via this wireless communication circuit, and Collected data is transmitted to the center device in response to a no ringing incoming call from the device via the telephone line and the terminal network control circuit.

However, in such a system in which automatic meter reading is regularly performed and transmitted to the center device on a regular basis, security data such as a sudden gas leak, pressure abnormality, battery voltage drop, water leak, overflow, etc. can be compared. Even if collected at the time of regular meter reading, there is a time lag, lack of safety, and waste of the supplier.

[0004]

SUMMARY OF THE INVENTION A first object of the present invention is to provide a security abnormality when a sudden security abnormality occurs.
An object of the present invention is to provide a slave wireless device capable of promptly notifying the center device of the abnormality so as to ensure safety, waste of the supply body, and reduction of battery power consumption.

A second object of the present invention is to integrate a slave radio with a terminal device so that a wire connecting them is broken, a contact failure due to oxidation of a connecting metal, a noise and the like are destroyed. This is to prevent signals from mixing into equipment as much as possible.

[0006]

According to the present invention, as shown in FIG. 1, a terminal network controller 4 for utilizing a telephone line.
Is connected to the parent wireless device means 3 connected to the wireless communication device via a wireless transmission path, and performs data communication with the parent wireless device means 3.
A slave radio 1 connected to a terminal device (meter) 2 to collect usage data from the terminal device, and as shown in FIG. 2, a wireless communication circuit for performing wireless communication with a master radio device means 3. 10, power supply means 11, storage means 12, and security data from the terminal device are identified, the security data is stored in the storage means 12, and the power supply means 11 is used to supply power to the wireless communication circuit 10. And a control means (CPU) 13 for controlling the wireless communication circuit 10 so as to transmit the security data stored in the storage means 12 to the parent wireless means 3.

In FIG. 2, the control means C
The PU monitors whether or not there is a terminal call from a meter which is a terminal device, that is, whether or not security data such as gas leak, pressure abnormality, battery voltage drop, water leak or overflow has been transmitted. When the security data is received, the security data is stored in the storage unit, the power supply unit is controlled to supply power to the wireless communication circuit, and the security data stored in the storage unit is stored in the storage unit via the wireless communication circuit. Transmit to radio means.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the configuration of an automatic meter reading wireless system using a slave wireless device according to the present invention. This system is a slave radio 1 according to the present invention.
Is a terminal device such as a water meter, a gas meter, a power meter, a hot water meter, a calorie meter, or the like 2.
And the usage data and security data from the meter 2 are transmitted by the slave radio 1 to the master radio means 3 through the radio transmission path. Master radio unit 3 that received this
Is connected to the center device 7 by a telephone line passing through the terminal network control device 4, the telephone exchange 5, and the center network control device 6.
Data is transmitted to the no ringing method. A telephone 8 is connected to the terminal network control device 4, and a no-ringing trunk 9 is connected to the telephone exchange 5.

As shown in FIG. 2, the slave radio 1 includes a radio communication circuit 10 for performing radio communication with the master radio means 3,
Power supply means 11 using a battery, storage means 12,
It has a CPU 13 as a control means. The CPU 13
It is monitored whether or not there is a terminal call from the meter 2, that is, whether or not security data such as gas leak, pressure abnormality, battery voltage drop, water leak or overflow has been transmitted, and when the security data is received, This is stored in the storage means 12, the power supply means 11 is controlled to supply power to the wireless communication circuit 10, and the security data stored in the storage means 12 is transmitted via the wireless communication circuit 10 to the master radio means. Send to 3. After the communication is completed, the power supply means 11 is controlled to stop the power supply to the wireless communication circuit 10. That is, in order to reduce battery power consumption, power is supplied to the wireless communication circuit 10 only during data transmission.

Although the slave radio 1 and the meter 2 are integrated with each other, the master radio means 3 and the terminal network controller 4 can be integrated with each other.

[0011]

As described above, according to the present invention,
When a sudden security abnormality occurs, the abnormality can be immediately notified to the center device, so that the safety can be enhanced and waste of the supply source at the time of abnormality can be eliminated. Since power is supplied to the wireless communication circuit only during transmission, battery power consumption can be reduced.

According to the second aspect of the present invention, since the slave wireless device is integrated with the terminal device, disconnection of the wire connecting these devices, contact failure due to oxidation of the connecting metal, and destruction of noise and the like. It is possible to prevent signals from being mixed into the equipment as much as possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of an automatic meter reading wireless system using a slave wireless device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a slave wireless device according to the present invention.

[Explanation of symbols]

 1 Child Radio 2 Meter (Terminal) 3 Parent Radio Means 4 Terminal Network Controller 5 Telephone Switch 6 Center Network Controller 7 Center Equipment 8 Telephone 9 No Ringing Trunk 10 Wireless Communication Circuit 11 Power Supply Means 12 Storage Means 13 CPU (control means)

Claims (2)

[Claims] 1. A master radio unit connected to a terminal network controller for using a telephone line is connected via a radio transmission path to perform data communication with the master radio unit,
In a slave radio that is connected to a terminal device and collects usage data from the terminal device, a wireless communication circuit for performing wireless communication with the master wireless device means, a power supply means, a storage means, and the terminal device. Security data from the storage device, the security data is stored in the storage unit, the power supply unit is controlled to supply power to the wireless communication circuit, and the security data stored in the storage unit is stored in the storage unit. A slave radio for an automatic meter-reading wireless system, comprising: a control unit that controls the wireless communication circuit to transmit to a wireless unit. 2. The slave radio for automatic meter reading radio system according to claim 1, wherein the slave radio is integrated with the terminal device.