JP3131529B2 - Centralized monitoring home equipment in the media consumption centralized monitoring system - Google Patents

Abstract

PURPOSE:To provide a centralized monitoring customer station equipment in a medium consumption centralized monitoring system allowed to be easily arranged even in an existing building without applying specific construction to the building and capable of reducing power consumption. CONSTITUTION:In this centralized monitoring customer station equipment in the medium consumption centralized monitoring system, a medium consumption data source such as a gas meter 12 connected to a medium equipment capable of using a medium to be consumed and generating medium consumption data expressing the use of the medium to be consumed by the medium equipment and a transmitter 30 connected to the medium consumption data source to transmit the medium consumption data by radio waves are arranged on the data generation side and a terminal equipment connected to the transmitter through radio waves, connected to a line from an exchange 17 and transmitting medium consumption data obtained from the transmitter to the exchange 17 are arranged on the trunk line side. Thus the transmitter connected to the medium consumption data source and the terminal equipment connected to the line from the exchange are respectively arranged on the data generation side and the trunk line side and radio communication is executed between the transmitter and the terminal equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-home apparatus for centralized monitoring in a centralized medium consumption monitoring system, and more particularly to a centralized medium consumption monitoring system for centrally monitoring the use state of gas, water and the like. And related to a centralized monitoring home device provided in the office.

[0002]

2. Description of the Related Art Conventionally, for example, a centralized gas monitoring system is a centralized gas monitoring center installed on a subscriber's premises such as a general home or a restaurant and connected to a gas facility via a public switched network. Is a system that sends medium consumption data such as gas consumption from a home device to a center, and monitors the status of gas at the center. Conventional in-house equipment transmits gas consumption data as an information source, for example, gas equipment such as a gas pressure regulator with a gas flow sensor or a microcomputer-type gas meter, and transmits data from them to a centralized gas monitoring center. And a terminal for receiving signals. In the house, there is generally a telephone line protector connected to the exchange via a public telephone line. The protector and the terminal are connected by wire, and the terminal is connected by wire to the above-mentioned gas equipment. Each of these devices in the home device is supplied with power from a commercial AC power source.

Conventionally, when data is transmitted from an in-home device to a center, for example, a terminal originates a call at a predetermined off-hook timing, establishes a communication line with a centralized gas monitoring center via an exchange, and then establishes a terminal. Analyzes the gas consumption from a microcomputer gas meter and the gas flow analysis data from a gas pressure regulator with a gas flow sensor.
The data was transmitted to the center with M, and the on-hook operation was performed at the end of the data transmission to disconnect the communication line.

[0004]

However, in such a conventional gas centralized monitoring system, since a protector and a terminal in a subscriber's house are connected by a wired line, especially in an existing building. Later, when you want to install in-house equipment for a centralized gas monitoring system, because there is no space for such a wired line, it is difficult to pass a wired line, or it takes construction costs to pass a wired line,
There has been a problem that the conventional centralized monitoring home device cannot be installed.

[0005] Another problem is that it is not possible to install a conventional centralized monitoring home device because it is difficult to receive supply of commercial AC power and the power consumption is large.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and particularly in a medium consumption centralized monitoring system which can be easily installed even in an existing building without special construction in the building and can reduce power consumption. An object is to provide an in-home device for centralized monitoring.

[0007]

In order to solve the above-mentioned problems, according to the present invention, in a centralized monitoring home device of a centralized medium consumption monitoring system, a data generation side is connected to a medium facility that uses a consumption medium. A media consumption data source for generating media consumption data representing the use of the consumption medium in the media facility, and connected to the media consumption data source;
Transmission means for transmitting medium consumption data wirelessly is provided, and on the line side, one side is wirelessly connected to this transmission means, and the other side is connected to a line from an exchange, and the medium consumption data obtained from this transmission means is transmitted. The terminal device for transmitting to the exchange is provided. As described above, the transmitting means connected to the medium consumption data source is arranged on the data generating side, and the terminal device connected to the line from the exchange is arranged on the central office side, and the area between them is made wireless to eliminate the need for wired wiring.

In particular, the medium consumption data source and the transmitting means on the data generating side are provided with a battery in consideration of an environment in which it is difficult to supply a commercial AC power supply, and have a battery saving means as a measure against battery consumption. Further, in the countermeasures against battery consumption of the transmitting means, the receiving and detecting means of the incoming call signal transmitted from the terminal device is constituted by means which does not require a power source.

As used herein, the term “consumable medium” refers to a medium supplied to a home or business, such as gas, electricity, water supply, hot water, and cooling / heating energy medium.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a system for centrally monitoring media consumption according to the present invention; FIG. 1 shows an embodiment in which the present invention is applied to a centralized gas monitoring system. In the wireless gas centralized monitoring system in this embodiment, a transmitter 30 in a customer premises 13 such as a general home or a restaurant is connected to a gas centralized monitoring center 19 by a wireless line 14 and ISDN wired lines 16 and 23. , From transmitter 30 to center
This is a system in which gas consumption data such as a regular meter reading value and usage amount of gas is sent to 19, and the center 19 monitors the gas usage status from the gas consumption data. In this system, a wireless line 14 connects the transmitter 30 and the terminal device 60 with the terminal device 60.
ISDN (Integrated Services), which is one of the user / network interfaces, between 60 and DSU (Digital Service Unit) 15
Digital Network) Basic interface passive bus
At 20 (wired line), the DSU 15 and the ISDN exchange 17 are connected by an ISDN telephone line, that is, two metallic lines 16.
Further, the center 19 is similarly connected to the DSU 22 via the passive bus 21, and the DSU 22 is connected to the ISDN exchange 17 via the ISDN telephone line 23.

In FIG. 1, the system comprises a gas pressure regulator 11 with a gas flow sensor, a microcomputer type gas meter 1
2, transmitter 30, terminal device 60, DSU15, ISDN exchange 17, DSU
22 and a centralized gas monitoring center 19.
Among these elements, gas pressure regulator 11, gas meter 12,
The transmitter 30 and the terminal device 60 constitute a centralized gas monitoring home device.

In this embodiment, the DSU 15 is a device on the exchange side, but may be included in the home device. The gas pressure regulator 11 with a gas flow sensor has a function of adjusting the pressure of gas in a pipe to a gas consuming appliance such as a gas stove, and a function of adding a function of replacing a gas flow rate in the pipe with a change in resistance value. The adjuster is connected to the transmitter 30, and outputs data corresponding to, for example, a resistance value to the transmitter 30. The microcomputer gas meter 12 includes, for example, a microprocessor, ROM, and RAM, and has, for example, a periodic meter reading function for determining a monthly gas usage amount and a function for determining a current gas usage amount, and is connected to the transmitter 30. And a gas meter that outputs gas consumption data such as periodic meter readings and gas consumption to the transmitter 30.

The transmitter 30 has a self-calling function, a battery saving function, a wireless transmission / reception function, a data storage function and a control function for controlling those functions, and the like. In response to an incoming call signal from the device 60, battery saving control is performed, and resistance value data from the gas pressure regulator 11 and gas consumption data from the gas meter 12 are transmitted to the terminal device via the wireless line 14.
It is a device that outputs to 60. The terminal device 60 is connected on the one hand with the transmitter 30 and the wireless line 14 and on the other hand with the DSU 15 on the line side via the passive bus 20 (wired line), receives data from the transmitter 30, The data corresponding to the received data is inserted into the data insertion position of the transmission format of the ISDN basic interface and output to the passive bus 20, and the passive bus 20
This is a device for inputting data from the device and wirelessly transmitting data corresponding to the input data to the transmitter 30. The DSU 15 converts the transmission format signal of the ISDN basic interface on the passive bus 20 into a transmission format signal of the ping-pong transmission system in this embodiment and outputs the signal to the ISDN telephone line 16, and transmits the signal to the ping-pong transmission line of the ISDN telephone line 16. The signal of the transmission format of the system is converted to the signal of the transmission format of the ISDN basic interface and the passive bus
Output to 20.

The ISDN exchange 17 has ISDN telephone lines 16 and 23
A digital exchange which accommodates, for example, sets up a call connection between the terminal device 60 and the center 19 in response to a call from the transmitter 30 or the center 19 to enable mutual communication between the transmitter 30 and the center 19 It is. Note that a so-called network configuration may be provided between the home device and the center 19 via a plurality of digital exchanges. The centralized gas monitoring center 19 is connected via the switching network 17 to
At least, for example, data from each transmitter 30 in each home 13 is input, and a monitoring function for monitoring the gas usage state of the home 13 from the data, a calling function for calling each transmitter 30, It is a data processing system including a function of communicating with the device 30 and a control function for controlling those functions.

FIG. 2 is a detailed block diagram showing a configuration example of the transmitter 30 of FIG. In FIG. 2, the transmitter 30 is A
M (medium wave) wave antenna 31, communication antenna 32, radio transceiver 33, radio transmission / reception control device 34, sleep mode / information input monitoring device 35, battery power supply 36, gas monitoring control device 3
7. It comprises an AM wave receiving device 38 and a power switch 39.

The AM (medium-wave) wave antenna 31 is connected to the receiving device 38, receives an AM signal transmitted by radio from the terminal device 60, and outputs the AM signal to the receiving device 38. The output of the antenna 31 is connected to the input of the AM wave
Reference numeral 38 denotes an AM detector that has a germanium diode as a detection diode in the present embodiment, performs AM detection of the AM signal output from the antenna 31 by the detection diode, and outputs the AM detection signal to an output 41. The AM detector of the present embodiment does not need to supply power, and effectively works to reduce the power consumption of the transmitter 30. The AM detector may be provided with, for example, a transistor amplifier circuit that amplifies a carrier frequency (in this embodiment, a medium wave) to an appropriate level before detection. However, the AM detector in this case requires a power supply.

The gas monitoring controller 37 has a counter (not shown) that repeatedly counts at a predetermined cycle, for example, when a manual call switch (not shown) is ON, and indicates a predetermined count value. A calling circuit (not shown) for outputting a calling signal to the output 44 at any time of time or when a clock (not shown) indicates a certain time, and a calling signal from the calling circuit Alternatively, AM from the output 41 of the receiving device 38
When a detection signal (in this embodiment, an incoming signal from the center 19) is received, this calling signal or incoming signal is output to the output 44, and a control signal (the present embodiment) for turning on the power switch 39 from the sleep state. In the example, a first control circuit (not shown) that outputs “1”) to the output 42 is provided. The control circuit further outputs a state signal (in this embodiment, the active state is "1") indicating the state, that is, the active state in which power is supplied to each device, to the output 43, and outputs the state signal to the memory. A write control signal for writing is generated and output to an output 49, and the output is controlled. When receiving the release indication signal from the output 45 of the control device 34, the gas monitoring control device 37 outputs a control signal for turning off the power (“0” in this embodiment) to the output 42, and outputs the control signal to the control device 34. When a disconnection request signal is received from the output 45, a state signal indicating the sleep state in which power is not supplied (in this embodiment, the sleep state "0") is output to the output 43, and the state signal is written to the memory. Generate and output write control signal for
49 and a second control circuit (not shown) for controlling these outputs.

Further, the gas monitoring control device 37 receives a call signal from the above-described calling circuit or an output 41 of the receiving device 38 to output an AM signal.
When the detection signal is received, or when a certain time has elapsed after receiving the signal, for example, from the output 46 of the gas pressure regulator 11,
And data from the output 47 of the gas meter 12 and convert these data or analysis data of these data into a format that can be written to a memory, and output the converted data.
And a write control signal for writing to the memory is generated and output to the output 49.When the data capture is completed, a data capture end signal is output to the output 44 and a control signal for stopping the write is output. A third control circuit (not shown) for outputting to the output 49 and controlling those outputs is provided. The control device 37 always takes in data from, for example, the gas pressure regulator 11 or the gas meter 12 and writes the data into the memory (including updating of the data), and is written into the memory when an incoming / outgoing call is made or when the taken-in data is abnormal. The latest data may be transmitted to the center 19.

The sleep mode / information input monitoring device 35 comprises:
For example, the semiconductor memory circuit is configured by a RAM or the like, and receives a state signal at the output 43 of the control device 37, data at the output 48, and a write control signal at the output 49, respectively. A memory circuit that writes data to the memory, receives a read signal from the output 50 of the control device 34, reads the status signal and information written in the memory, and outputs the read information to the output 51.

The radio transmission / reception control device 34 receives a call and call signal from an output 44 of the control device 37, outputs a control signal corresponding to the call and call signal to an output 52, and outputs the control signal of the control device 37. In response to the data capture completion signal from the output 44, a read control signal for reading data from the memory circuit of the monitoring device 35 is generated and output to the output 50, and the read data of the memory circuit output 51 is accessed by accessing the read control signal. The data is converted to a wireless transmission format and output to the output 52.When the data read from the memory circuit is sent to the terminal device 60, a disconnection request signal is generated and output to the output 52. It has a first control circuit (not shown) for controlling the output. The wireless transmission / reception control device 34 also receives a control signal from an output 53 of the wireless transceiver 33, generates a control signal corresponding to the control signal, outputs the control signal to an output 45 and an output 52, and controls a second output for controlling these outputs. Control circuit (not shown).

The radio transceiver 33 outputs the signal of the output 52 of the control device 34 to the MODEM (in this embodiment, V29 MODEM recommended by CCITT).
And modulate the MODEM modulation signal with the next FM modulation circuit.
FM-modulate, amplify this FM-modulated signal to the specified power with the next transmission power amplifier, input this power-amplified FM-modulated signal to the transmission signal input terminal of the antenna duplexer, and transmit the transmission frequency of this FM-modulated signal. In this embodiment, a transmitting circuit (not shown) for outputting a signal (a certain frequency in the range of 925 to 940 MHz used in Japanese mobile phones) from an antenna input / output terminal,
A reception signal from the antenna 32 is received at the input / output terminal of the antenna duplexer, and the reception frequency of the reception signal (in this embodiment, a certain frequency within 870 to 885 MHz used in a mobile phone in Japan)
From the reception signal output terminal of the antenna duplexer, further amplifies the extracted reception signal by the reception amplifier, adds it to the FM demodulation circuit, performs FM demodulation, adds the FM demodulated signal to MODEM, demodulates the signal, and demodulates the demodulated signal. Output via data output terminal
And a receiving circuit (not shown) for outputting to 53. Note that the transmission and reception frequencies need not be limited to the above.

The battery power source 36 is, for example, a primary battery such as a dry battery, a secondary battery such as a lead storage battery, a solar battery, or the like, and any combination of a primary battery, a secondary battery, and a solar battery may be used. Alternatively, any one type of battery may be used. The power switch 39 is, for example, an electromagnetic relay, a mercury relay, a semiconductor switch, or the like, and is a switch that opens and closes the power in response to a power ON / OFF control signal from the output 42 of the control device 37.

The power output of the battery power source 36 is a contact terminal 55 of the power switch 39, a power input terminal of the control device 37, a power input terminal of the sleep mode / information input monitoring device 35, for example, a gas pressure sensor with a gas flow sensor (not shown). The power input terminal of the regulator 11 and the power input terminal of the microcomputer gas meter 12 are connected to each other. Power switch 39 contact terminal
56 is a power input terminal of the wireless transceiver 33, and the control device 34
Are connected to the power supply input terminals.

The wireless transmission / reception control device 34, the sleep mode / information input monitoring device 35, and the gas monitoring control device 37
May be configured by a microprocessor, ROM, RAM, input / output port, clock, and the like.

FIG. 3 shows a detailed block configuration example of the terminal device 60 of FIG. In FIG. 3, the terminal device 60
Is an AM (medium wave) wave antenna 61, a communication antenna 62, a basic interface 63, a radio transmitting / receiving device 64, a speed conversion unit
65, an AC power supply device 66, a wired / wireless ISDN control device 67, a centralized gas monitoring and control device 68, and an AM (medium wave) wave transmitting device 69.

The basic interface 63 is an output of the DSU 15
2B + D of basic interface transmission format of AMI code from 75
Upon receiving the multiplexed signal, the AMI code is first converted to an NRZ code, and then the D (signal) channel is input / output 77 to 2B (information).
Separate channels into B1 and B2 channels and output 78 and output
79, on the other hand, the control signal of the D (signal) channel from the input / output 77 of the control device 67, the data of the B1 channel from the output 80 of the speed converter 65, and the output from the device not shown.
Input each of the 81 B2 channel signals, multiplex each in a multiplexed format according to the basic interface,
Further, it is a code conversion / demultiplexing circuit that converts the NRZ code of the multiplexed signal into an AMI code and sends it to the output 76. Here, the transmission speed of the multiplexed 2B + D is 192 kb / s, and the transmission speed of each of the B1 and B2 channels is 64 kb / s. For example, using an optical fiber for the ISDN telephone line 16
Applying the primary interface of the ISDN user / network interface, the basic interface 63 and DSU15
May correspond to the primary group interface.

The speed converter 65 receives and stores 64 kb / s data from the output 78 of the interface 63, reads out the stored data at a speed of 9600 b / s, and sends it to the output 82. This is a speed conversion circuit that inputs and stores 9600 b / s data from the output 83 of the device 64, reads out the stored data at a speed of 64 kb / s, and sends it to the output 80. The wired / wireless ISDN controller 67 has an interface 63
The control signal of the gas central monitoring system is input from the input / output 77 of the controller and the output 84 of the controller 68, and the control signal corresponding to each input signal is input / output 77 and the output 85.
And control circuits for controlling these outputs.

The centralized gas monitoring and control device 68 receives control signals for the centralized gas monitoring system from the output 85 of the control device 67 and the output 83 of the wireless transmitting / receiving device 64, and outputs control signals corresponding to the respective input signals. , An output 84, and an output 87, and a control circuit for controlling these outputs.

The AM (medium wave) wave transmitting device 69 includes, for example, a transmitting circuit (in this embodiment, a medium frequency carrier frequency is transmitted),
A modulation circuit (in this embodiment, an AM modulation system), a high-frequency amplification circuit (not shown), and the like are provided, and an incoming signal is output from an output 87 of the control device 68 (in this embodiment, a call signal from the center 19). ), The carrier frequency is AM-modulated with the incoming call signal, and the AM-modulated signal is amplified and output to the output 88. The AM (medium wave) wave antenna 61 receives a medium wave AM modulation signal from an output 88 of the transmission device 61 and emits the medium wave AM modulation signal to the transmitter 30 as a radio wave. Note that the carrier frequency of transmitting device 61 may be a frequency other than the medium wave, for example, a short wave, and the modulation method may be a modulation method other than the AM modulation method, for example, an SSB (Single Side Band) modulation method.

The basic configuration of the wireless transceiver 64 is the same as that of the wireless transceiver 33 described above. The wireless transmission / reception device 64 includes a control signal from an output 82 of the control device 68, and a speed conversion unit 65.
The data from the output 82 is received by the MODEM data input terminals, these signals are modulated by the MODEM, and the modulated signal of the MODEM output is further FM-modulated by the next FM modulation circuit.
The FM transmission signal is amplified to the specified power by the next transmission power amplifier, and this power-amplified FM transmission signal is further input to the transmission signal input terminal of the antenna duplexer. (In this embodiment, a transmission circuit (not shown) for outputting a certain frequency in the range of 925 to 940 MHz used in Japanese mobile phones) from the antenna input / output terminal of the antenna duplexer, and a reception signal from the antenna 62 Is received at the input / output terminal of the antenna duplexer, and the received signal (in this embodiment, a certain frequency within 870 to 885 MHz used in a mobile phone in Japan) is taken out from the received signal output terminal of the antenna duplexer and taken out. The received signal is further amplified by a receiving amplifier, applied to an FM demodulation circuit, and subjected to FM demodulation.
And a receiving circuit (not shown) for further demodulating and outputting the demodulated signal to an output 83 via a data output terminal.

The AC power supply 66 converts commercial AC power into DC power and supplies DC power to each device in the terminal device 60.

The synthesizing function of the control device 67 and the control device 68 may be constituted by a microprocessor, a ROM, a RAM, an input / output port, a clock and the like.

FIG. 4 is a diagram showing a connection procedure when a call is made from a home device. With reference to FIGS. 1 to 4, the connection operation when a call is made from the home device will be described.

In the calling circuit of the control device 37 of the home device, for example, when the counter indicates a certain value, a calling signal including the telephone number of the partner center 19 is generated and output.
In response to the output of the call signal, first, a control signal for turning on the power switch 39 is output, the power switch 39 is turned on, and DC power is supplied to the wireless transceiver 33 and the control device 34. Next, the control device 37 generates a status signal "1" indicating the active state, writes this status signal into the memory of the monitoring device 35, and fetches gas consumption data from the gas pressure regulator 11 and the gas meter 12 to monitor the monitoring device 35. Write to memory. The calling signal output from the control device 37 is transmitted from the communication antenna 32 through the control device 34 and the wireless transceiver 33. The transmitted call signal is received by the antenna 62 of the terminal device 60, passes through the wireless transmitting / receiving device 64, the control device 68, the control device 67, the interface 63, and the DSU 15, and is transmitted as shown in FIG.
The call setting request signal shown in FIG.
The exchange 17 receiving the call setting request signal sends a call setting display signal shown in FIG. The called center 19 outputs a response request signal shown in FIG. Upon receiving the response request signal, the exchange 17 outputs a response display signal shown in FIG. 4D to the home device. This response display signal is output to the control device 34 through a route reverse to the route of the above-mentioned calling signal. The control device 34 receives the response display signal, and
It recognizes that the communication line between 19 has been established. Since the communication line has been established, the control device 34 further reads necessary data from the memory of the monitoring device 35. Then, the read data is transmitted from the antenna 32 through the control device 34 and the wireless transceiver 33.

The transmitted data is received by the antenna 62 of the terminal device 60, the radio transmitting / receiving device 64, the speed converter 65,
The data is output to the center 19 through the interface 63 and the DSU 15 using the B1 channel as shown in FIG. 4E. Further, the control device 34 recognizes the end of the data transmission, generates a disconnection request signal, and outputs this disconnection request signal (FIG. 4f) to the exchange 17 through the route of the calling signal.

The exchange 17 receiving this disconnection request signal outputs a disconnection indication signal shown in FIG. The center 19 that has received the disconnection indication signal outputs a release request signal shown in FIG. The exchange 17 receiving this release request signal outputs a release indication signal shown in FIG. This release indication signal is output to the control device 34 through a route reverse to the route of the above-mentioned calling signal. Upon receiving the release indication signal, the control device 34 sends the release indication signal to the control device in order to turn off the power switch 39.
Output to 37. The control device 37 that has received the release indication signal outputs a control signal of the power switch 39 OFF, and the power switch 39
To OFF. The control device 34 that has generated the disconnection request signal,
This disconnection request signal is also output to the control device 37. Upon receiving the disconnection request signal, the control device 37 writes a status signal “0” indicating that the power supply is in the sleep state to the memory of the monitoring device 35, and also fetches data from, for example, the gas pressure regulator 11 and the gas meter 12 to monitor the monitoring device. An initialization operation for setting the data area written in the memory of 35 to “0” is performed.

In the home device, the counter of the calling circuit is:
Since the count is repeated at a fixed cycle, the above operation is repeated at a fixed cycle. As described above, the power supply is in the active state during the period from the calling to the disconnection, and the communication between the home device and the center 19 is established by the wireless line and the ISDN telephone line. During the period from the disconnection to the calling, the power supply is in the sleep state and is not communicating.
As can be seen from the above, the power consumption of the transmitter 30 is reduced during the period in which no communication is performed, that is, the transmitter 30 performs the battery saving operation.

In the home device, when calling with a clock,
When the clock of the calling circuit indicates a predetermined date and time, a call is made and communication is started, and the communication is terminated by a disconnection operation after data transmission. Similarly, when a call is manually made using the calling switch, the communication is started when the calling switch is turned ON, and the communication is started, and the communication is terminated by the disconnection operation after data transmission. The power consumption of the transmitter 30 is reduced during a period in which communication is not performed by any of the above methods.

FIG. 5 is a diagram showing a connection procedure when a call is made by the centralized gas monitoring center. 1 to 3 and 5
The operation when a call is made from the centralized gas monitoring center will be described with reference to FIG.

At the center 19, a call setting display signal (FIG. 5a) including the telephone number of the in-home device of the subscriber's premises 13 whose gas consumption data is to be collected is generated and output to the exchange 17. Upon receiving the call setup request signal, the exchange 17 sends a call setup display signal shown in FIG. The call setting display signal from the exchange 17 is transmitted to the DSU 15 and the interface 63.
And is output to the control device 67. Control device 67, having received the call setting display signal, first determines whether the call setting display signal is a call for its own home device or a call other than its own.

In the home device, when the control device 67 determines that the home device is called, the control device 67 outputs a call setting display signal (incoming signal) to the control device 68. This incoming signal is output to the transmitting device 69 through the control device 68. The incoming signal is AM-modulated in transmitting device 69, and the AM-modulated signal is transmitted from antenna 61. The antenna 31 receives the transmitted AM modulated signal and sends it to the receiving device 38. The receiving device 38
AM modulation signal is received from antenna 31, AM detection is performed, and
An AM detection signal, that is, an incoming call signal is transmitted to the control device 37.

The control device 37 receives the incoming call signal from the receiving device 38, first outputs a control signal for turning on the power switch 39, turns on the power switch 39, and sends a DC signal to the radio transceiver 33 and the radio transmission / reception control device 34. Supply power. Further, the control device 37 generates a status signal "1" indicating the active state, writes this status signal into the memory of the monitoring device 35, and acquires and monitors gas consumption data from, for example, the gas pressure regulator 11 and the gas meter 12. Write to the memory of the device 35. The control device 37 also transmits the above-mentioned incoming call signal to the control device 34.
To send to. The control device 34 having received the incoming call signal generates a response request signal indicating the off-hook operation, and
Send to 33. This response request signal is transmitted from the antenna 32 through the wireless transceiver 33. Further, the transmitted response request signal is received by the antenna 62 of the terminal device 60, and the radio transmitting / receiving device 64, the control device 68, the control device 67, the interface
63, and is output to the exchange 17 as a response request signal shown in FIG. Exchange which received the response request signal
17 sends the response indication signal shown in FIG. Upon receiving the response display signal, the center 19 recognizes that the communication line between the designated home device and the center 19 has been established.

The operations from the establishment of the communication line to the transfer of data and the restoration of the line are the same as those in the case of the above-described call from the home device.

Although the present invention has been described with respect to a specific embodiment in which the present invention is applied to a centralized gas monitoring system, the present invention can be applied to households and businesses other than gas, such as water supply, electricity, hot water, and cooling / heating energy media. It is also effectively applied to other centralized monitoring systems for consumption media. Furthermore, the present invention can also be applied to centralized monitoring of products resulting from consumption, such as discharge of waste such as sewers and garbage.

[0045]

As described above in detail, for example, according to the medium consumption centralized monitoring system of the present invention, in the centralized monitoring home device, a terminal device is arranged on the station line side and a transmitter is provided on the data generating side. Since it is arranged and wireless is provided between them, wired wiring can be eliminated. Therefore, the centralized media consumption monitoring system can be used in an existing building without performing any special construction on the building. In particular, since the transmitter on the data generating side, which has poor commercial AC power supply conditions, is converted to a battery power supply and measures against power consumption are taken, it can be used for a long time even in a place without commercial AC power supply.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment in which the present invention is applied to a gas centralized monitoring system.

FIG. 2 is a block diagram showing an embodiment of the transmitter of FIG. 1 according to the present invention.

FIG. 3 is a block diagram showing an embodiment of the terminal device of FIG. 1 according to the present invention;

FIG. 4 is a diagram showing a connection procedure when a centralized monitoring home device originates a call in the embodiment shown in FIG. 1;

FIG. 5 is a diagram showing a connection procedure when a call is made by a centralized gas monitoring center.

[Explanation of symbols]

 11 Gas pressure regulator with gas flow sensor 12 Microcomputer gas meter 30 Transmitter 31,61 AM (medium wave) wave antenna 32,62 Communication antenna 33 Radio transceiver 34 Radio transmission / reception control device 35 Sleep mode / information input monitoring device 36 Battery power supply 37 Gas monitoring controller 38 AM wave receiver 39 Power switch 60 Terminal device 63 Basic interface 64 Wireless transceiver 65 Speed converter 67 Wired / wireless ISDN controller 68 Gas central monitoring controller 69 AM (medium wave) Wave transmitter

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 11/00-11/10 H04B 7/24

Claims (2)

(57) [Claims] In a centralized medium consumption monitoring system for monitoring the use status of a consumption medium supplied to a subscriber's home at a centralized monitoring center, the centralized consumption data relating to usage of the consumption medium in the home is exchanged via an exchange. a centralized audit MiSo location to be sent to the monitoring center, the device is connected to the medium equipment using consumer media, and the media consumption data source for generating a media consumption data representing the use of consumer medium in said medium facilities Terminal device and transmission means
And the terminal device receives a call from the centralized monitoring center before
Receiving an incoming signal from the exchange, and
Amplitude modulated by the first modulation method, the amplitude modulation method.
A first method for generating a width-modulated signal and transmitting the generated signal on a first wireless line
Transmitting means, modulated by a second modulation method by the medium consumption data;
Receiving the modulated signal on the second wireless line, and receiving the received modulated signal.
Demodulating the tone signal to obtain medium consumption data, and obtaining the obtained medium consumption data.
Transmitting and receiving means for transmitting data to the exchange, wherein the transmitting means comprises a first wireless communication means for transmitting the data to the exchange.
Receiving the amplitude-modulated signal transmitted on the line, and
Amplitude demodulation means for demodulating a modulated signal and outputting an incoming signal
When a storage means for storing the medium consumption data, reads the media consumption data stored in said storage means, said
Read the medium consumption data and switch to the second modulation method.
And a modulated signal is generated by the second radio line.
A second transmitting unit for transmitting to the transmitting / receiving unit, a battery power source, an input terminal connected to an output of the battery power source, and an output terminal
Is a switch connected to the power input terminal of the second transmitting means.
Switch, receives a power ON / OFF control signal, and receives the received power.
The power supply from the battery power supply is supplied to the second
Switch means for supplying to the transmitting means, and the medium consumption data source, amplitude demodulation means, storage means,
Connected to the transmission means, battery power supply and switch means
Means for receiving an incoming signal from the amplitude demodulation means.
And, the media consumption data from the media consumption data source said
The power-on control signal is stored in storage means.
Centralized audit MiSo location in media consumption centralized monitoring system according to claim Rukoto sent to said switch means to generate. 2. A equipment according to claim 1, wherein the consumption medium is concentrated audit MiSo location, characterized in that the gas supplied to the customer premises.