JPH07303153A - Gas security equipment - Google Patents

Abstract

PURPOSE:To store lines with successful dialing by trying communication again through a line after revision of line class when trial communication is made for a prescribed number of times between a house installing the security equipment and a central supervisory center and the communication is not successful. CONSTITUTION:A central supervisory center and a gas security panel 20 installed to each house II are connected via a telephone line III, and a gas security panel 20 sends required event information to the predetermined central. supervisory center via the telephone line III. The gas security panel 20 can select a DP (dial pulse transmitter) 3 or a PB (pushphone transmitter) 4 by a switch 6. When communication by using a DP(PB) signal is not successful, a PB(DP) signal is used and a communication enable line is stored in a memory 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a gas security panel installed in each home and a centralized monitoring center via a telephone line, and provides meter reading data of a gas meter in each home.
The present invention relates to a gas security device that reports various kinds of gas security data and the like to the central monitoring center through the telephone line.

[0002]

2. Description of the Related Art FIG. 3 is an overall configuration diagram for explaining an example of a gas security device to which the present invention is applied, in which I is a centralized monitoring center, II is a user (home), and II.
I is a telephone line, and the central monitoring center I and user II are
Connected via telephone line III. The centralized monitoring center I side is equipped with a CPU 11, a modem 12, a printer 13 and the like, and the user II side is equipped with a gas security panel 20, a telephone 21, a gas sensor 22 (gas alarm device) and the like outdoors. It is equipped with a gas meter 23, a gas cylinder 24, etc., and the CPU 11 of the centralized monitoring center and the user's gas security panel 20 are connected via a telephone line III. For example, the meter reading value of the gas meter 23 or a water meter, electric power meter not shown The security panel 20 informs the central monitoring center I of meter reading values, or when the gas sensor 22 detects a gas leak, the security panel 20 informs the central monitoring center I of a gas leak.

When there is a data transmission request from the centralized monitoring center I, the gas security panel 20 judges the transmission request, and if it requests the meter reading value of the gas meter, the meter reading value of the gas meter, Water meter reading value,
Alternatively, if the meter reading value of the power meter is requested,
The meter reading value of the water meter or the electric power meter is transmitted to the centralized monitoring center.

The gas security board 20 includes a gas sensor 2
When a gas leak signal from 2 is received, the shutoff valve of the gas meter 23 is automatically closed to ensure safety, and the central monitoring center I is notified of the gas leak. Upon receiving the gas leak information, the centralized monitoring center I dispatches an inspector to the user to confirm the fact of the gas leak, and when the fact of the gas leak is confirmed, the countermeasure process is executed.

Thus, in the above-mentioned gas security device, the gas security board has, for example, a ten-key pad,
With the numeric keypad, telephone number (telephone number of the center),
Set the code number (ID) of yourself (user), for example, the reservation time for opening / closing the gas meter valve, regular notifications such as meter readings, gas cylinder switching timings, etc., and set the parameters in the central monitoring center I through the telephone line. At the same time, it is stored in the RAM built in the gas security board 20.

[0006]

As described above, the gas security device exchanges information between each home and the centralized monitoring center through a telephone line. The line type is stored in the type switch or the memory, that is, the line type is either DP (digital pulse transmission) or PB (pushphone transmission). For this reason, there is a problem that if the construction type is set incorrectly or the line type is changed after installation, if the line type set in the transmitting device and the type of the connected line are different, the call cannot be made.

The present invention has been made in view of the above-mentioned circumstances, and when the gas security device is installed in each home, a trial communication is attempted with the centralized monitoring center a predetermined number of times and the communication is impossible. The purpose of this is to change the line type, to try again on the changed line after the change, and to store the succeeded line after the successful transmission.

[0008]

In order to solve the above-mentioned problems, the present invention provides (1) a centralized monitoring center and a gas security panel installed in each home, which are connected via a telephone line. An automatic notification device for transmitting required event information from the security panel to the predetermined centralized monitoring center through the telephone line, and a request for call to the exchange by detecting the transmission operation from the centralized monitoring center. In the gas security device equipped with a network control device, the gas security panel is a means for judging the call failure based on the number of trials by the reporting device, the line type is changed when the call failure is judged, and the network control device is changed after the line type is changed. A means for notifying the changed line type and retrying the call, and a means for storing the changed line type after a successful call, or (2) The centralized monitoring center and the gas security board installed in each home are connected via a telephone line, and the required event information is predetermined from the gas security board through the telephone line. In a gas security device equipped with an automatic notification device for transmitting to a monitoring center and a network control device for detecting a transmission operation from a centralized monitoring center and requesting a call to a destination of an exchange, the gas security panel is a dial pulse. The transmission circuit and the touch-tone transmission circuit are switchable, and a carrier signal detection circuit is provided, and when the carrier signal is not detected, the dial pulse transmission circuit and the touch-tone transmission circuit are switched. .

[0009]

When the security device is installed, the trial communication is attempted between the home where the gas security device is installed and the centralized monitoring center a predetermined number of times. If communication is not possible, the line type is changed, and after the change, the changed line is used. It tries again, and after successful transmission, stores the line after success.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of an electric circuit for explaining an embodiment of a security device according to the present invention, in which II denotes the same operation as the gas security panel II shown in FIG. The gas security panel II includes a CPU 1, a memory 2, a DP (dial pulse transmitter) 3, a PB (push-phone transmitter) 4, a carrier signal detector 5, and a changeover switch 6. The switch 6 can be switched to DP communication or PB communication.

FIG. 2 is a flow chart for explaining the operation of the present invention. For example, first, the changeover switch 6 is used.
Is set to the contact a side to enter the DP communication state, and in this state, a call is made to the centralized monitoring center. When the number of callings n is set in advance (however, n is a natural number, for example, the number of times when a call is normally given up, for example, 20 times), and the line is not connected even after calling n times (step 1) Is error processing (step 2).

If the line is connected before the call is made n times, it is assumed that the normal transmission operation is performed, and the carrier signal detector 5 detects the carrier signal. When the carrier signal is detected, the line type at that time is stored in the memory 2 (step 4). When the carrier signal is not detected, the line type is changed. For example, when the changeover switch 6 is connected to the contact a side, it is changed to the b side. That is, the DP communication is switched to the PB communication (step 5). Further, when the changeover switch 6 is connected to the contact b side, it is changed to the a side. In other words, from PB communication to DP
Switch to communication (step 5). After changing the line, the CPU 1 is notified of the changed line type (step 6), and the same trial is performed again.

[0013]

As is apparent from the above description, according to the present invention, even if the telephone line is installed in each home, the gas security panel automatically discriminates the communication line and corrects it. Since it is matched with the communication line, it is possible to eliminate mistakes in construction settings, etc., or even if the line type is changed after installation, the security panel can be easily adjusted to the changed line type.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a main configuration of an electric circuit of a gas security board according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the present invention.

FIG. 3 is a diagram for explaining an example of a gas security device to which the present invention is applied.

[Explanation of symbols]

I ... Centralized monitoring center, II ... User, III ... Telephone line,
1 ... CPU, 2 ... Memory, 3 ... DP oscillator, 4 ... PB oscillator, 5 ... Carrier detector, 6 ... Changeover switch.

Claims (2)

[Claims] 1. A centralized monitoring center and a gas security board installed in each home are connected via a telephone line, and the required event information is predetermined from the gas security board through the telephone line. In a gas security device equipped with an automatic notification device for transmitting to a monitoring center and a network control device for detecting a transmission operation from a centralized monitoring center and requesting a call to the exchange destination, Means for judging the call origination failure based on the number of trials by the device, means for changing the line type when the call origination failure is judged, and means for notifying the network control apparatus of the changed line type and retrying the call origination,
A gas security device comprising means for storing the changed line type after a successful call. 2. A centralized monitoring center and a gas security panel installed at each home are connected via a telephone line, and the required event information is preset from the gas security panel through the telephone line. In a gas security device equipped with an automatic notification device for transmitting to a monitoring center and a network control device for detecting a transmission operation from a centralized monitoring center and requesting a call to a destination of an exchange, the gas security panel is a dial pulse. A gas security device characterized by having a transmitting circuit and a touch-tone transmitting circuit switchable, and having a carrier signal detecting circuit, and switching between the dial pulse transmitting circuit and the touch-tone transmitting circuit when the carrier signal is not detected. .