JPH0927865A - Terminal equipment network controller and terminal network control system using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a telephone set to quickly control a terminal equipment connecting to the terminal equipment network controller with safety. SOLUTION: The controller is provided with an off-hook dial detection section 28, which detects hook-off of a telephone set 3 connecting to a telephone line 2 via the terminal equipment network controller 18, detects a dial signal sent from the telephone set 3 and controls a terminal equipment connecting to the terminal equipment network controller 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal network control device connected to an analog telephone line, and more particularly to a terminal network control device used for communication control between a meter and a center terminal in automobile meter reading or the like, and the same. The present invention relates to a terminal network control system.

[0002]

2. Description of the Related Art A conventional terminal network control device of this type is installed in a place separate from a meter. When the gas cutoff valve of the meter is closed due to, for example, the amount of gas used, the terminal network control device calls the terminal to notify the staff on the center side. Then, the staff on the center side calls the user's house and if there is no safety problem, the staff on the center side explains the operation method of opening the gas shutoff valve by phone, and then the user himself shuts off the gas. I was supposed to open the valve.

[0003]

However, the above structure has the following problems.

First, in order for a user to control a terminal device such as a meter, it is necessary to bother to go to the place where the terminal device is installed, and it is very inconvenient especially when the terminal device is located at a high place. is there.

Secondly, the user himself / herself operates the gas shutoff valve, but it is difficult to know whether the operation is performed accurately and safely.

[0006]

As a structure for solving the above first problem, a terminal network control device connected to a telephone line and a terminal device such as a meter for controlling communication between the terminal device and a center terminal is provided. The off-hook dial for detecting the off-hook of the telephone connected to the terminal network control device and the dial signal sent from the telephone thereafter, and discriminating the dial signal and controlling the terminal device accordingly. It has a structure called a detection unit.

As a first configuration for solving the above-mentioned second problem, the terminal network control device is provided with a call section for enabling a call with a staff member on the center side.

As a second configuration for solving the above second problem, a terminal network control device, a terminal device such as a meter,
The display device is provided with a display unit for displaying the control method and information of the terminal device, and an operation switch unit operated by a user for controlling the terminal device and when knowing the information.

As a third structure for solving the above-mentioned second problem, the display section is composed of a liquid crystal section for displaying characters and figures by liquid crystal.

As a fourth structure for solving the above-mentioned second problem, the display unit is composed of a voice synthesizing unit for synthesizing voice data transmitted from the center side and outputting the voice. is there.

As a fifth configuration for solving the above-mentioned second problem, a voice information storage unit in which the display unit stores voice data in advance, and the voice information storage unit according to the information transmitted from the center side. Is composed of a sound reproducing unit for outputting sound data stored in advance.

As a sixth configuration for solving the above-mentioned second problem, communication control between the terminal network control device and mainly the terminal network control device is performed and at the same time control of terminal devices such as meters and information is performed. The remote control device for transmitting and receiving and the terminal device are provided.

As a seventh structure for solving the above-mentioned second problem, the remote operation device is provided with a communication section.

As an eighth structure for solving the above-mentioned second problem, the remote operation device is provided with a display section and an operation switch section.

[0015]

According to the present invention, when the user controls the terminal device by the structure for solving the above first problem, the telephone is off-hooked and the predetermined number is dialed. The terminal network control device controls the terminal device by the detection unit detecting and controlling accordingly.

When the gas shutoff valve is closed by the first configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the user opens the gas shutoff valve while talking with the staff of the center through the communication section, and at the same time, the staff of the center communicates with the terminal network control device to confirm this.

When the gas cutoff valve is closed by the second configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the staff at the center side calls the gas user's house, but if there is no problem in safety, the user is asked to move to the meter and the user calls the center call switch part of the terminal network control device. Call the staff on the center side by pressing. Then, the center side informs the user of the operation procedure for opening the gas cutoff valve by the display unit, thereby performing the operation of opening the gas cutoff valve, and at the same time, the staff at the center side communicates with the terminal network control device to confirm this.

Further, when the gas cutoff valve is closed by the third configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the staff on the center side calls the gas user's house, but if there is no problem in safety, the user is moved to the meter, and the user operates the operation switch section there, and the center side is operated. Call the staff. Then, the center side displays the gas shut-off valve opening operation procedure on the liquid crystal part, and the user performs the gas shut-off valve opening operation while watching this, and at the same time, the center side staff communicates with the terminal network control device and displays it. Confirm.

Further, when the gas cutoff valve is closed by the fourth configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the staff on the center side calls the gas user's house, but if there is no problem in safety, the user is moved to the meter, and the user operates the operation switch section there, and the center side is operated. Call the staff. The center terminal transmits voice data of an operation procedure such as opening of the gas shutoff valve, and the voice synthesizer synthesizes the voice data and outputs the voice. While listening to this, the user opens the gas shutoff valve, and at the same time, the staff at the center side confirms this by communicating with the terminal network control device.

Further, when the gas cutoff valve is closed by the fifth configuration for solving the second problem, the terminal network control device makes a terminal call and reports this to the center terminal.
Then, the staff on the center side calls the gas user's house, but if there is no problem in safety, the user is moved to the meter, and the user operates the operation switch section there, and the center side is operated. Call the staff. The center terminal transmits information on an operation procedure such as opening of the gas shutoff valve, and when receiving the information, the voice reproducing unit takes out voice data stored in advance in the voice information storage unit and outputs a voice.
While listening to this, the user opens the gas shutoff valve, and at the same time, the staff at the center side confirms this by communicating with the terminal network control device.

When the gas shutoff valve is closed by the sixth configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the staff member on the center side calls the user by the remote control device at the gas user's house. If there is no safety problem, the user operates the remote control device to open the gas cutoff valve, and at the same time, the staff at the center side communicates with the terminal network control device to confirm this.

Further, when the gas shutoff valve is closed by the seventh configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the staff member on the center side calls the user through the call section of the remote control device at the gas user's house. If there is no safety problem, the user opens the gas shutoff valve while talking to the staff on the center side using the communication section of the remote control device, and at the same time the staff on the center side communicates with the terminal network controller. And confirm this.

Further, when the gas cutoff valve is closed by the eighth configuration for solving the second problem, the terminal network control device makes a terminal call and notifies the center terminal of this.
Then, the staff member on the center side calls the user by the buzzer generation unit of the remote control device at the gas user's house. If there is no safety problem, the user does this by seeing the opening operation of the gas cutoff valve displayed on the display of the remote control device.
At the same time, the staff at the center side communicates with the terminal network control device to confirm this.

[0024]

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

FIG. 1 shows a terminal network control device of an embodiment having a configuration for solving the first problem of the present invention. In FIG. 1, 1 is a center terminal, 2 is a telephone line, 3 is a telephone, and 4 is a telephone line.
Is connected to the center terminal 1 via the telephone line 2 for communication and is also connected to the telephone 3. The line control unit 5 controls the line communication unit 4, and the communication control unit 13 is a communication control unit 5.
And a meter interface unit for exchanging information with the meter side, 18 is a terminal network control device, 28 is an off-hook of the telephone 3 connected to the terminal network control device 18, and a dial sent from the telephone 3 thereafter. An off-hook dial detection unit that detects a signal, determines the dial signal, and controls the terminal device according to the signal. In this embodiment, the terminal device according to claim 1 is a gas meter.

Next, the operation of the terminal network controller will be described with reference to FIG. When the gas shutoff valve is closed due to overflow of gas due to excessive use of gas equipment, the meter side informs the communication control unit 5 of this fact, and the communication control unit 5 communicates with the line communication unit 4
To connect to the center terminal 1 via the telephone line 2 to communicate and transmit the information. Then, if the staff on the center side makes a call to the user's house and there is no safety problem, the user off-hooks the telephone 3 after the call and opens a predetermined gas shutoff valve that cannot be normally given to the telephone number. Dial the number to be transmitted to the terminal network control device 18 so as to do so. Then, the off-hook / dial detection unit 28 of the terminal network control device 18 monitors the off-hook of the telephone 3 and the dial signal after that, and if this is detected and the number is determined in advance as opening the gas shutoff valve, the communication control unit is detected. 5, the communication control unit 5 transmits this to the meter side via the meter interface unit 13, and the meter side opens the gas cutoff valve. Then off-hook
The dial detector 28 sends a certain audible sound to the telephone 3 to inform the user that the gas shutoff valve has been opened.

FIG. 2 shows a terminal network control apparatus of the first embodiment for solving the second problem of the present invention. The description of the same components as those of the above-described embodiments will be omitted (the same applies to the following embodiments). In FIG. 2, 6 is a meter control unit that controls the gas flow rate control unit and exchanges information with the communication control unit 5, and 7 measures and integrates the usage amount of gas and the like and shuts off the gas in the event of an earthquake or the like. Gas flow rate control unit, 8 voice input unit for voice input, 9 voice output unit for voice output, 10 call switch unit pressed by user during a call, 11
Is a center call switch section, which is pushed when calling the center side to talk with a staff member on the center side, and 12 is a voice input section 8
The voice output unit 9, the call switch unit 10, and the center call switch unit 11 are controlled, and voice signals input / output to / from the voice input unit 8 and the voice output unit 9 via the line communication unit 4 during a call are transmitted / received to / from the center side. A call control unit 18 for performing the above is a terminal network control device. The call section includes a voice input section 8, a voice output section 9, a call switch section 10, and a center call switch section 11.
And the communication control unit 12. Further, the present embodiment is an embodiment of an integrated terminal network control device having a built-in meter function.

Next, the operation of the terminal network control device will be described with reference to FIG. After the meter control unit 6 which has detected this due to the gas flow rate being exceeded due to overuse of the gas appliance instructs the gas flow control unit 7 to close the gas cutoff valve, the meter control unit 6 notifies the communication control unit 5 of this fact. Then, the communication control unit 5 controls the line communication unit 4 to connect to the center terminal 1 via the telephone line 2 to perform communication and transmit this. Then, the staff member on the center side calls the user's house and, if he is at home, asks the user to move to the terminal network control device 18, and instructs the user to press the center call switch unit 11 there. . When the user presses the center call switch section 11, the call control section 12 detects this and the communication control section 5
To instruct the terminal to make a call. In response to this, the communication control unit 5 controls the line communication unit 4 to connect to the center terminal 1 via the telephone line 2. Then, the user uses the voice input unit 8 and the voice output unit 9 to talk with the staff on the center side. At that time, when the user speaks to the center side, the call switch unit 10 is pushed. Then, the call control unit 12 detects this, and controls the line communication unit 4 to transmit the voice signal input to the voice input unit 9 at that time to the center side via the telephone line 2. In addition, telephone line 2 from the center side
When a voice signal is transmitted to the line communication unit 4 via the line communication unit 4, the line communication unit 4 sends the voice signal to the call control unit 12, and the call control unit 1
2 outputs this by the voice output unit 9. By doing so, the user operates the gas shutoff valve while talking to the staff on the center side, and at the same time, the staff on the center side uses the center terminal 1 to communicate via the telephone line 2. Information such as the current gas flow rate is received through the unit 4 to monitor whether the operation of opening the gas cutoff valve is accurately and safely performed.

FIG. 3 shows a terminal network control system of the fourth embodiment of the present invention for solving the second problem of the present invention. In FIG. 3, 13 is a meter interface unit for exchanging information with the meter side, 14 is a terminal interface unit for exchanging information with the meter interface unit 13, 15 is a transmission line, and 16 is a liquid crystal that is displayed by characters or figures by liquid crystal. Reference numeral 17 denotes an operation switch unit operated by a user when the user controls the meter or knows information, 18 is a terminal network control device, and 19 is a meter. In this embodiment, the terminal device is a meter, and the meter is composed of a meter control unit 6, a gas flow rate control unit 7, and a terminal interface unit 14. The terminal network controller 18 is composed of the line communication unit 4, the communication control unit 5, and the meter interface unit 13.

Next, the operation of the terminal network controller will be described with reference to FIG. After the meter control unit 6 which has detected the gas flow rate excess due to overuse of the gas appliance or the like instructs the gas flow rate control unit 7 to close the gas cutoff valve, the meter control unit 6 controls the terminal interface unit 14 to transmit the signal. This is transmitted to the meter interface unit 13 via the line 15. The meter interface unit 13 transmits this to the communication control unit 5, and the communication control unit 5 controls the line communication unit 4 to connect with the center terminal 1 via the telephone line 2 to perform communication and transmit it. Then, the staff member on the center side calls the user's house and, if he is at home, asks the user to move to the meter 19 and operates the operation switch section 17 there. When the user operates the operation switch unit 17, the meter control unit 6 detects this and instructs the communication control unit 5 via the terminal interface unit 14 to make a terminal call. In response to this, the communication control unit 5 controls the line communication unit 4 to connect to the center terminal 1 via the telephone line 2. Then, the center terminal 1 transmits information about what kind of display should be made on the liquid crystal unit 16 to the line communication unit 4 connected via the telephone line 2, and the line communication unit 4 sends this information to the communication control unit 5. Then, the communication control unit 5 transmits this to the meter interface unit 13 and then to the terminal interface unit 14 via the transmission line 15. Upon receiving this, the terminal interface unit 14 transmits this to the meter control unit 6, and the meter control unit 6 instructs the liquid crystal unit 16 to display this. Then, the user performs this operation using the operation switch unit 17 while viewing the information such as the opening operation of the gas cutoff valve and the current gas flow rate displayed on the liquid crystal unit 16. The staff on the center side receives information such as the current gas flow rate through the line communication unit 4 connected via the telephone line 2 using the center terminal 1, and the operation of opening the gas shutoff valve is accurately and safely performed. To monitor

FIG. 4 shows a terminal network control device of the fifth embodiment of the present invention for solving the second problem of the present invention. In FIG. 4, 14 is a terminal interface unit, 17 is an operation switch unit that is operated when the user wants to know the gas flow rate at present or when the abnormality is to be reported to the center side, and 18 is a terminal network control device. , 19 is a meter,
Reference numeral 20 is a voice synthesizing unit for synthesizing voice data transmitted from the center side and outputting it as voice.

Next, the operation of the terminal network control device will be described with reference to FIG. After the meter control unit 6 which has detected the gas flow rate excess due to overuse of the gas appliance or the like instructs the gas flow rate control unit 7 to close the gas cutoff valve, the meter control unit 6 controls the terminal interface unit 14 to transmit the signal. This is transmitted to the meter interface unit 13 via the line 15. The meter interface unit 13 transmits this to the communication control unit 5, and the communication control unit 5 controls the line communication unit 4 to connect with the center terminal 1 via the telephone line 2 to perform communication and transmit it. Then, the staff member on the center side calls the user's house and, if he is at home, asks the user to move to the meter 19 and operates the operation switch section 17 there. When the user operates the operation switch unit 17, the meter control unit 6 detects this and instructs the communication control unit 5 via the terminal interface unit 14 to make a terminal call. In response to this, the communication control unit 5 controls the line communication unit 4 to connect to the center terminal 1 via the telephone line 2. Then, the center terminal 1 transmits information on a guide for opening the gas shutoff valve to the line communication unit 4 connected via the telephone line 2. Then, the line communication unit 4 transmits this to the communication control unit 5, and the communication control unit 5 transmits this to the meter interface unit 13 and then to the terminal interface unit 14 via the transmission line 15. Upon receiving this, the terminal interface unit 14 transmits this to the meter control unit 6, and the meter control unit 6 transmits this to the voice synthesis unit 20. The voice synthesizer 20 decodes the voice data and outputs it as voice. Then, the user performs this operation with the operation switch unit 17 while listening to the information such as the opening operation of the gas cutoff valve and the current gas flow rate by the voice output from the voice synthesis unit 20.

At the same time, the staff at the center side uses the center terminal 1 and is connected through the telephone line 2 to the line communication unit 4
The information such as the current gas flow rate is received through to monitor whether the operation of opening the gas shutoff valve is performed accurately and safely.

FIG. 5 shows a terminal network control device of the sixth embodiment for solving the second problem of the present invention. In FIG. 5, 17 is an operation switch unit, 18 is a terminal network control device, 19 is a meter, and 21 is a voice reproduction that outputs voice data previously stored in the voice information storage unit 22 according to information transmitted from the center side. The unit 22 is a voice information storage unit that stores voice data in advance.

Next, the operation of the terminal network controller will be described with reference to FIG. After the meter control unit 6 which has detected the gas flow rate excess due to overuse of the gas appliance or the like instructs the gas flow rate control unit 7 to close the gas cutoff valve, the meter control unit 6 controls the terminal interface unit 14 to transmit the signal. This is transmitted to the meter interface unit 13 via the line 15. The meter interface unit 13 transmits this to the communication control unit 5, and the communication control unit 5 controls the line communication unit 4 to connect with the center terminal 1 via the telephone line 2 to perform communication and transmit it. Then, the staff member on the center side calls the user's house and, if he is at home, asks the user to move to the meter 19 and operates the operation switch section 17 there. When the user operates the operation switch unit 17, the meter control unit 6 detects this and instructs the communication control unit 5 via the terminal interface unit 14 to make a terminal call. In response to this, the communication control unit 5 controls the line communication unit 4 to connect to the center terminal 1 via the telephone line 2.

Then, the center terminal 1 has a voice information storage unit 22.
Information about which voice is to be output by the voice reproducing unit 21 from the voice data stored in advance is transmitted to the line communication unit 4 connected via the telephone line 2. Then, the line communication unit 4 transmits this to the communication control unit 5, and the communication control unit 5 transmits this to the meter interface unit 13 and then to the terminal interface unit 14 via the transmission line 15. Upon receiving this, the terminal interface unit 14 conveys this to the meter control unit 6, and the meter control unit 6 causes the voice reproduction unit 2
Send this to 1. The voice synthesizer 21 extracts necessary voice data from the voice information accumulator 22 according to the received information and outputs this voice. Then, the user performs this operation with the operation switch unit 17 while listening to the information such as the opening operation of the gas cutoff valve and the current gas flow rate by the sound output from the sound reproduction unit 21. At the same time, the staff on the center side receives information such as the current gas flow rate through the line communication unit 4 connected through the telephone line 2 using the center terminal 1, and the operation of opening the gas shutoff valve can be performed accurately and safely. Monitor what is happening.

FIG. 6 shows a terminal network control device of the eighth embodiment for solving the second problem of the present invention. In FIG. 6, 8 is a voice input unit, 9 is a voice output unit, 10 is a call switch unit, 11 is a center call switch unit, 18 is a terminal network control device, 19 is a meter, 23 is a voice input unit 8 and a voice output unit. 9, the call switch unit 10, and the center call switch unit 11 are controlled, and the voice input from the voice input unit is transmitted to the remote transmission / reception unit 26, or the remote transmission / reception unit 2
A remote control unit that outputs the voice received from 6 to the voice output unit 9, 24 is a terminal transmission / reception unit that communicates with a meter or a remote operation device, 25 is a meter transmission / reception unit that communicates with a terminal network control device or a remote operation device, and 26 is a A remote transmission / reception unit 27 for communicating with the terminal network control device and the meter is a remote operation device. The call unit includes a voice input unit 8, a voice output unit 9, and a call switch unit 10.
And a center call switch unit 11.

Next, the operation of the terminal network controller will be described with reference to FIG. After the meter control unit 6 which has detected this due to the gas flow rate being exceeded due to overuse of the gas appliance instructs the gas flow control unit 7 to close the gas cutoff valve, the meter control unit 6 notifies the communication control unit 5 of this fact. The communication control unit 5 controls the line communication unit 4 to connect with the center terminal 1 via the telephone line 2 and communicate with the center terminal 1. Then, the staff on the center side sends a sound such as a bell to call the user from the voice output unit 9 of the remote control device 27 to the line communication unit 4 connected via the telephone line 2 by the center terminal 1. If the user responds to this, the user uses the voice input unit 8 and the voice output unit 9 to talk with the staff on the center side. At that time, when the user speaks to the center side, the call switch unit 10 is operated. Then, the call control unit 12 detects this, and the remote control unit 23 controls the remote transmission / reception unit 26 to transmit the voice input to the voice input unit 9 at that time to the terminal network control device 18. Then, the communication control unit 5 of the terminal network control device 18 controls the line communication unit 4 to transmit it to the center terminal 1 connected via the telephone line 2. Further, when the staff on the center side sends a voice, this is sent to the line communication unit 4 connected to the center terminal 1 via the telephone line 2. Then, the line communication unit 4 that has received this transmits it to the remote control device 27 via the terminal transmission / reception unit 24. And the remote transmitter / receiver 26
Sends this to the remote control unit 23, and the remote control unit 23 outputs this audio signal by the audio output unit 9.

By doing so, the user opens the gas shutoff valve while talking with the staff on the center side, and at the same time, the staff on the center side is connected via the telephone line 2 using the center terminal 1. Information such as the gas flow rate is currently received through the line communication unit 4 and it is monitored whether the operation of opening the gas cutoff valve is performed accurately and safely.

FIG. 7 shows a terminal network control apparatus of the eighth embodiment for solving the second problem of the present invention. In FIG. 7, 16 is a display unit for displaying a meter control method and information, 17 is an operation switch unit operated when the user wants to know information such as gas flow rate, 18 is a terminal network control device,
19 is a meter, 23 is a display section 16 and an operation switch section 17
And 24 is a terminal transmission / reception unit, 25 is a meter transmission / reception unit, 26 is a remote transmission / reception unit, and 27 is a remote operation device.

Next, the operation of the terminal network control device will be described with reference to FIG. After the meter control unit 6 which has detected this due to the gas flow rate being exceeded due to overuse of the gas appliance instructs the gas flow control unit 7 to close the gas cutoff valve, the meter control unit 6 notifies the communication control unit 5 of this fact. The communication control unit 5 controls the line communication unit 4 so that the line communication unit 4 connects with the center terminal 1 via the telephone line 2 to perform communication and transmit the information. Then, the staff member on the center side transmits an instruction to display to call the user by using the display unit 16 of the remote control device 27 to the line communication unit 4 connected via the telephone line 2 by the center terminal 1. When the line communication unit 4 receives this, the terminal transmission / reception unit 24 transmits this to the remote control device 27, and the remote transmission / reception unit 26 transmits this to the remote control unit 23. Then, the remote control unit 23 instructs the display unit 16 to call the user. If the user responds to this,
The center terminal 1 instructs the display unit 16 of the remote control device 27 to display the opening operation of the gas cutoff valve, and the user pushes the operation switch unit 17 to open the gas cutoff valve. At the same time, the staff on the center side receives information such as the current gas flow rate through the line communication unit 4 connected through the telephone line 2 using the center terminal 1, and the operation of opening the gas shutoff valve can be performed accurately and safely. Monitor what is happening.

[0042]

As described above, the terminal network control device of the present invention has the following advantages.

With the configuration for solving the first problem, the user can open the gas cutoff valve by using the telephone in the home, so that it is difficult for the user to go to a high place where the gas meter is out of reach or a place where the gas meter cannot reach. The gas shut-off valve can be opened easily and safely even in various places.

A first method for solving the second problem
With the above configuration, even if the gas flow rate is exceeded due to overuse of the gas appliance and the gas shutoff valve is closed, it is possible to do this by receiving an instruction to open the gas shutoff valve while talking with the staff. Since the staff on the center side can monitor this operation at the same time by using the center terminal, the operation of opening the gas cutoff valve can be performed accurately and safely. When the user notices any abnormality, he / she can operate the center calling switch of the terminal network control device to make a quicker call than checking the telephone number of the gas company and making a call. Further, since the communication check after the installation work of the terminal network control device can be performed while talking with the center side, there is an effect that the work efficiency and reliability are improved.

A second method for solving the above second problem
With this configuration, the meter control such as the operation of opening the gas cutoff valve can be known by the display unit, so that this can be accurately performed. In addition, since it is possible to know information such as the current gas flow rate, the user can easily perform a gas leak test by regularly stopping the gas appliances in the house and knowing the current gas flow rate at that time, so safety is improved. It has the effect of improving.

A third method for solving the second problem is also provided.
With this configuration, it is possible to display the meter control method on the liquid crystal part using characters or diagrams, so even people who are hard of hearing can safely operate the gas cutoff valve, and even if something goes wrong. Since the display is not by voice on the telephone but by characters or figures, it is easy to accurately convey the instruction from the center side, and the amount of data transmitted from the center terminal is reduced.

A fourth method for solving the above second problem
With this configuration, since the center terminal transmits the voice data and the voice synthesizer outputs the voice data as voice, the optimum instruction can be transmitted to the state. In addition, even at night or during a power failure, it is possible to know the instruction because it is a voice.

A fifth aspect for solving the above second problem
With the above configuration, when the center terminal transmits a certain electronic message, the voice reproduction section outputs the voice stored in advance in the voice information storage section, so that the data transmitted from the center terminal is reduced, so that the instruction can be quickly transmitted. There is.

A sixth aspect for solving the above second problem
With this configuration, the user can perform the operation of opening the gas cutoff valve away from the meter, so that the operation can be performed safely.

A seventh aspect for solving the second problem
With this configuration, noise from the outside is eliminated when a call is made with the center side, so that the voice can be easily heard.

An eighth aspect for solving the above second problem
With the above configuration, when calling the user when the gas cutoff valve is closed, the staff at the center can call the user by the remote operation device without making a call.
This call has an effect that the user can immediately know that the call is from the center side unlike the case of a telephone call.

[Brief description of drawings]

FIG. 1 is a block structural diagram of a terminal network control device according to a first embodiment of the present invention.

FIG. 2 is a block structural diagram of a terminal network control device according to a second embodiment of the present invention.

FIG. 3 is a block structural diagram of a terminal network control system according to a third embodiment of the present invention.

FIG. 4 is a block structural diagram of a terminal network control system according to a fourth embodiment of the present invention.

FIG. 5 is a block structural diagram of a terminal network control system according to a fifth embodiment of the present invention.

FIG. 6 is a block structural diagram of a terminal network control system according to a sixth embodiment of the present invention.

FIG. 7 is a block structural diagram of a terminal network control system according to a seventh embodiment of the present invention.

[Explanation of symbols]

 1 center terminal 2 telephone line 3 telephone 4 line communication unit 5 communication control unit 6 meter control unit 7 gas flow control unit 8 voice input unit 9 voice output unit 10 call switch unit 11 center call switch unit 12 call control unit 13 meter interface unit 14 terminal interface unit 15 transmission line 16 liquid crystal unit 17 operation switch unit 18 terminal network control device 19 meter 20 voice synthesis unit 21 voice reproduction unit 22 voice information storage unit 23 remote control unit 24 terminal transmission / reception unit 25 meter transmission / reception unit 26 remote transmission / reception unit 27 Remote Control Unit 28 Off-hook Dial Detection Unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiko Yasui 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (9)

[Claims] 1. A terminal network control device connected to a telephone line and a terminal device such as a meter for controlling communication between the terminal device and a center terminal, the off-hook of a telephone connected to the terminal network control device, and thereafter. A terminal network control device comprising an off-hook dial detection unit for detecting a dial signal sent from the telephone, discriminating the dial signal and controlling the terminal device accordingly. 2. The terminal network control device according to claim 1, further comprising a call unit capable of making a call with a staff member on the center side. 3. A terminal network control device, a terminal device such as a meter, a display section for displaying the control method and information of the terminal device, and a user for controlling the terminal device and when knowing the information. A terminal network control system comprising an operation switch section for operating the. 4. The terminal network control system according to claim 3, wherein the display unit is composed of a liquid crystal unit for displaying characters and figures on the liquid crystal. 5. The terminal network control system according to claim 3, wherein the display unit comprises a voice synthesizing unit for synthesizing voice data transmitted from the center side and outputting the synthesized voice. 6. The display unit is a voice information storage unit for storing voice data in advance, and a voice reproduction unit for outputting the voice data previously stored in the voice information storage unit according to information transmitted from the center side. The terminal network control system according to claim 3, wherein the terminal network control system is configured by a unit. 7. A terminal comprising a terminal network control device, a remote control device for controlling communication with the terminal network control device and for controlling a terminal device such as a meter, and for transmitting and receiving information, and a terminal device. Web control system. 8. A terminal network control device, a remote control device for controlling communication with the terminal network control device, controlling a terminal device such as a meter, and transmitting / receiving information, and a call section provided in the remote control device. , A terminal network control system including terminal devices. 9. A terminal network control device, a remote control device for performing communication control with the terminal control device, control of the terminal device such as a meter, and transmission / reception of information, and a display section and operation provided in the remote control device. A terminal network control system including a switch unit and a terminal device.