JPH083808B2 - Data setting method for terminal device - Google Patents

Description

The present invention relates to a data setting device for a terminal device,
More specifically, in a data transmission system in which a plurality of terminal devices are connected to a central control device via a communication line, identification data for distinguishing each terminal device from other terminal devices. Relates to a new method for setting etc.

<Prior Art and Problems to be Solved by the Invention> Conventionally, a plurality of terminal devices are connected to a central control device, and various data transmitted from each terminal device are classified for each terminal device. Then, there is provided a system for performing processing so as to carry out necessary measures based on the abnormality detection data transmitted from each terminal device.

Such a system exists in a limited range, for example, one in which a plurality of terminal devices installed in the same building are connected to a central control device, and in a considerably wide range, for example, in a predetermined area. Terminal devices installed in multiple buildings are roughly divided into those connected to a central control unit.In the former system, the installation location of terminal devices may change, or the number of installations may increase or decrease. Almost never,
Moreover, since it is common that the central control unit and each terminal device are connected by a dedicated data transmission line, for example, it is not necessary to set the identification data for each terminal device, or Even when it is necessary to set the identification data, when installing each terminal device, by setting the identification data by the DIP switch, etc. The data can be identified. Then, once the identification data is set as described above, there is almost no need to reset the identification data, and necessary control, data aggregation, etc. based on only the initially set identification data. Can be done. Particularly in such a system, since the central control unit and each terminal unit are connected by a dedicated data transmission line, the timing control of data transmission is performed under the control of the central control unit. A so-called sequential polling method is generally used.

On the other hand, in the latter system, for example, the management company installs the terminal device only for the buildings that are under management in the buildings existing in the predetermined area, and performs necessary control, data aggregation, etc. However, since there is a change in the installation location of the terminal device or a change in the number of installations quite frequently, it is necessary to set identification data for the terminal device each time such a change occurs. And moreover,
Since the setting operation of the identification data is first achieved by updating the identification data table in the central control unit and operating the DIP switch or the like at the terminal device installation site, the identification data setting operation becomes complicated. Not only that, there is a problem that an identification data setting error is likely to occur.

More specifically, as such a system, a propane gas automatic meter reading system has been conventionally provided. In this propane gas automatic meter reading system, a terminal device that incorporates a usage amount detector that detects the usage amount of propane gas and a gas sensor that detects the leakage of propane gas is installed at the place where propane gas is installed. In addition, each terminal device is connected to the central control device installed in the management company through the public telephone line.
Then, each terminal device has identification data for distinguishing it from other terminal devices set by a dip switch or the like, and transmits necessary data including the identification data to the central control device. .

Therefore, if the identification data is set for each terminal device and the telephone number of the telephone terminal to which the central control device that is the data transmission destination is connected is set, it is necessary for each terminal device to periodically This data is transmitted to the central control unit, and the central control unit can output the collected amount and the like by performing necessary totaling operation, arithmetic operation and the like.

However, in the propane gas automatic meter reading system,
Since propane gas users often move or the number of propane gas users to be managed increases or decreases, it is necessary to reset the identification data of the corresponding terminal device each time. If the telephone number of the telephone terminal to which the central control unit is connected changes as a rare case, the data change destination data change work must be performed for all terminal devices. There is a problem in that it is necessary to perform it, not only a remarkably large amount of work is required, but also a possibility that a data setting error will occur.

<Objects of the Invention> The present invention has been made in view of the above problems, and it is possible to easily perform data setting for each terminal device, and to eliminate an artificial data setting error. The purpose is to provide a data setting method for.

<Means for Solving Problems> In order to achieve the above object, a data setting method for a terminal device according to the present invention has a table in which the central control device stores identification data corresponding to each terminal device. Cage,
Transmission of setting data from the central control unit to the corresponding terminal unit before the occupied state of the communication line is released, provided that the terminal unit has occupied the communication line and transmitted data to the central control unit. Is the way to do it.

However, it is preferable that the communication line is a public telephone line.

In the data transmission system, each terminal device sends out equipment management data corresponding to the installation location, and the central control unit performs necessary data processing based on the equipment management data transmitted from each terminal device. It is preferable.

In these cases, each terminal device may be installed in a plurality of buildings. And, as each of the above-mentioned terminal devices, it may be one that periodically transmits the equipment status aggregation data to the central control device, or it detects an abnormality of the equipment and transmits the abnormality detection data to the central control device. It may be one that does.

Further, it is preferable that the data transmitted from the central control device to each terminal device include at least identification data.

<Operation> According to the above data setting method for the terminal device, in the data transmission system in which the plurality of terminal devices are connected to the central control device through the communication line, the terminal device occupies the communication line. Since the setting data is transmitted from the central control device to the corresponding terminal device before the occupation state of the communication line is released, on condition that the data transmission to the central control device is performed, It is not necessary to poll each terminal device, and it is possible to reduce the burden on the central control device and eliminate the long-term occupation state of the communication line by the central control device.

Even when the communication line is a public telephone line, the same operation as above can be achieved.

In addition, the data transmission system sends out equipment management data corresponding to the installation location by each terminal device, and the central controller performs necessary data processing based on the equipment management data transmitted from each terminal device. In some cases, by transmitting the management data of the equipment installed at a physically remote location to the central control unit, to cause the central control unit to perform processing such as aggregation and calculation for each terminal device. You can

Furthermore, even when each terminal device is installed in a plurality of buildings, the same operation as above can be achieved. In this case, if each terminal device periodically transmits the equipment status aggregation data to the central control device,
Based on the equipment status aggregate data that is regularly transmitted,
In the central control device, it is possible to cause each terminal device to perform processing such as tallying and calculation over a longer period of time.

Further, if each terminal device detects an abnormality of the equipment and transmits the abnormality detection data to the central control device, when the abnormality occurs, the equipment corresponding to which terminal device in the central control device It is possible to identify whether an abnormality has occurred.

Further, when the data transmitted from the central control device to each terminal device includes at least the identification data, it is possible to easily deal with the change of the installation location of the terminal device and the increase in the number of installations.

<Example> Hereinafter, an example will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic diagram showing an overall configuration of a data transmission system for carrying out the data setting method of the present invention, in which a receiving unit (2) is connected to a central control unit (1) composed of a small computer. In addition, a plurality of transmission units (4) are connected to the reception unit (2) through the public telephone line (3), and the terminal device (5) is connected to each transmission unit (4). Has been done.

Therefore, when data transmission is to be performed from the central control device (1) to any terminal device (5), it is necessary through the receiving unit (2), the public telephone line (3), and the transmitting unit (4). Data can be transmitted, and conversely, when data is transmitted from any one of the terminal devices (5) to the central control device (1), the transmission unit (4) and the public telephone line (3 ), And the required data can be transmitted through the receiving unit (2).

FIG. 3 is a block diagram schematically showing the configuration of the receiving unit (2), which includes a data transfer unit (21) for transferring data to and from the central control unit (1) and a public telephone line ( 3) A conversion for exchanging parallel data and serial data between the modem (22) for exchanging data through the telephone, the telephone terminal (23), and the data exchanging section (21) and the modem (22). Part (24),
Hook-off switch (25) for controlling connection between the modem (22) and public telephone line (3), and changeover switch (26)
And a control section (27) for controlling the operation of each section.

More specifically, the changeover switch (26)
Is for switching between a state in which the public telephone line (3) is connected to the modem side and a state in which it is connected to the telephone terminal side. The hook-off switch (25) is connected via the changeover switch (26). This is for switching between the state in which the public telephone line (3) is connected to the modem side and the state in which the ring tone generator (28) is connected.

FIG. 4 is a block diagram schematically showing the configuration of the transmission unit (4), and the difference from the configuration of the reception unit (2) is that the control unit (47) is in a state of passing through a hook-off switch (45). While supplying the instruction signal,
The only difference is that a change-over switch (46) is provided which can be changed over in response to the state instruction signal.

FIG. 1 is a flow chart for explaining the data transmission operation including the data setting operation. In the step, it is judged whether or not the hook switch built in the telephone terminal (43) is ON, and if it is OFF, the step In each of the steps from step to step, it is necessary to issue an integrated report (send the integrated value of the equipment usage data) as to whether or not a scheduled report (send the equipment status data regularly) should be performed. Whether or not, abnormal reporting (sending data indicating a dangerous state) should be performed, and whether device abnormal reporting (sending data indicating equipment abnormality) should be performed If it is determined that any of the notifications should not be issued, the steps and subsequent steps are directly performed. On the contrary, when it is determined that any of the alarms should be issued, the public telephone line is closed in step and the telephone terminal (23) to which the receiving unit (2) is attached is attached in step. The automatic call operation is performed based on the corresponding telephone number, and in step, it is determined whether or not the reception request state is selected and whether or not the data setting request state for the terminal device is set, and either state is selected. If not, the step is determined as it is.

When it is determined that the hook switch is ON in the above step, that is, when the handset of the telephone terminal (43) is being lifted, the public telephone line is closed in step. , Step, the carrier signal is transmitted for a predetermined time, and then the above step is determined.

When it is determined that the reception request state is selected in the above step, that is, when the <ENQ> flag is determined to be “0”, data transmission to the central controller (1) (eg, , Data transmission including construction number data, etc., will be abbreviated as ULL transmission hereinafter), and whether or not the data setting request state for the terminal device is set in the step, that is, <
Determine whether the ENQ> flag is "1" or "2",
If it is determined that the data reception confirmation signal is neither "1" nor "2", it is determined whether or not the data reception confirmation signal has been received in the step. If not, the processing following the step is performed again. On the contrary, if it is received, it is determined in step whether or not the abnormality is issued. If it is determined that the alarm is issued, in step
It is determined whether or not the ULL transmission has been performed 8 times. If the ULL transmission has not been performed 8 times, the processes in and after the step are performed. On the contrary, when it is determined that the transmission has been performed eight times, or when it is determined that the abnormality is not issued, the transmission cancel flag <EOT> is set in step, the public telephone line is released in step, A series of data transmission processing ends.

When it is determined in the above step that the data setting request state for the terminal device is set, the data reception confirmation signal <ACK> is sent in the step, and in this state, it is sent from the central control unit (1). Receiving a data setting signal (hereinafter abbreviated as DLL reception). Then, in the step, it is determined whether or not the DLL reception is normally performed, and when it is determined that the DLL reception is normally performed, the data reception confirmation signal <ACK> is transmitted in the step and the step is directly performed. Perform processing. On the contrary, if the DLL reception is not performed normally, the data reception error signal <NA
CK> is sent, DLL reception is performed in this state, and the step determination is performed again.

In summary, after installing terminal equipment,
In order to confirm whether or not the connection with the central control unit (1) is normally made, if the handset of the telephone terminal (43) is picked up and the carrier signal is transmitted for a predetermined time, As shown in the operation sequence diagram of FIG. A, the connection state can be confirmed through the handset and necessary data can be set from the central controller (1). More specifically, since the closing operation with the public telephone line (3) is performed by lifting the handset, the dialing operation is performed thereafter to call and close the receiving unit (2). Then, the carrier signal transmitted from the receiving unit (2) can be confirmed, the <ENQ> flag of "0" can be received, and the carrier signal transmission completion can be confirmed. Therefore, if the construction number data and the like are transmitted from the transmitting unit (4) by ULL in this state, the construction number data and the DLL data are transmitted between the receiving unit (2) and the central control unit (1). Is performed in this order, and after the DLL data is transmitted, the carrier signal is transmitted again to the transmission unit (4), so that the hook-off switch (45) is operated and
When the handset is returned, the carrier signal is transmitted from the transmission unit (4), the <ENQ> flag of "1" is transmitted from the reception unit (2), and the data reception confirmation signal <ACK> is transmitted in this order. DLL transmission from the receiving unit (2) to the transmitting unit (4) is performed. After that, the release operation between the two units (2) and (4) and the public telephone line (3) is performed on condition that the data reception confirmation signal <ACK> is sent from the transmission unit (4), and a series of operations is performed. Ends the process.

Further, when DLL transmission is performed in accordance with the scheduled alarm operation, the transmission unit (4) automatically performs the closing operation and the dial operation as shown in the operation sequence diagram of FIG. 5D. , Receiving unit called (2)
By this, the closing operation, the carrier transmission, and the <ENQ> flag transmission of "0" are automatically performed. Then, if these operations are performed, the ULL
The transmission is performed, and the periodical alarm data is transmitted from the receiving unit (2) to the central control unit (1).

At this point, since the central control unit (1) has the data to be transmitted by the DLL, the transmission of the <ENG> flag of "2" to the receiving unit (2) and the DLL
Data is transmitted, and then the reception unit (2) transmits to the transmission unit (4) the <ENQ> flag of "2" and the DLL data is transmitted as a DLL. DL for reception and terminal
L data can be transmitted.

E and F in FIG. 5 are an operation sequence diagram of abnormality notification, an operation sequence diagram of scheduled time, integration, and device abnormality notification, respectively, which are similar to the operation sequence diagram shown in FIG. 5D. Detailed description is omitted.

In addition, FIGS. 5B and 5C are an operation sequence diagram and a confirmation notification sequence diagram of the manual initial DLL transmission, respectively, which are similar to the operation sequence diagram shown in FIG. 5A, and thus detailed description thereof will be omitted. .

Even when any of the above operation sequences is selected, the facility management data transmitted from the terminal device side is completely transmitted in a time of about several seconds, and therefore the public telephone line (3) is once provided. When it becomes possible to send and receive data through, it is possible to perform accurate data setting for the corresponding terminal device without incurring an extra charge, and general households existing within a predetermined range, It is possible to easily and surely perform facility management and set data for each terminal device without using a dedicated communication line when performing facility management of a small building.

In the above description, the format of data exchanged between the receiving unit (2) and the transmitting unit (4), and the central controller (1) and the receiving unit (2).
Although the format of data transmitted and received between and is not described, as is clear from the above description, it can be arbitrarily set according to the design specifications of the data transmission system. Specifically, for example, as shown in FIG. 6A, header data STX, size data SD, transmission address data TA, model data MS, store code data
SC, user code data US, data type DS, transmission data
Any format that includes Di and the error check code BCC may be used. Then, when transmitting the data from the receiving unit (2) to the central control unit (1), it is preferable to use a format in which the reception time data is added to the data as shown in FIG. 6B. .

The format of the DLL data transmitted from the central control unit (1) is, for example, as shown in FIG. 6C, header data STX, size data SD, transmission address data TA, store code data SC, user Code data
UC, current time data T1, integrated alarm time data T2, scheduled alarm interval data Td, first scheduled alarm interval data Td ₁ ,
Any format may be used, including report destination data RS, telephone number data TEL, and error check code BCC.

Therefore, by supplying the data transmitted by ULL in the format shown in FIG. 6A to the central control unit (1), the state of each terminal device can be monitored, the equipment state data can be integrated, and the calculation can be performed. Also, because it is possible to set the required data for each terminal device based on the DLL data, changes in the installation location of the terminal equipment, increase / decrease in the number of installations of the terminal equipment, changes in the installation location of the central control unit, etc. occur. Even in the case, new setting and change of data will be easy and accurate, and it will be possible to significantly simplify the operation of the equipment management system, which is very wide and changes and increases and decreases frequently. Become.

In the above embodiment, the case where the transmission unit (4) is installed in a one-to-one correspondence with the terminal device has been described, but the transmission unit (4) is installed in one building. The same can be applied to the case where a plurality of terminal devices are installed in a managed state.

However, in this case, as shown in FIG. 6D, from the terminal device, a format including header data STX, size data SD, terminal address data EA, abnormality flag data EF, transmission data Di, and error check code BCC. When an abnormality occurs, it is preferable to add the number-of-report data No. and the telephone number data TEL, as shown in FIG. 6E. Also, as for the format of the DLL data, it is preferable to add terminal device number data ENo and terminal device address data EA as shown in FIG. 6F.

<Effects of the Invention> As described above, the present invention utilizes the state in which the communication line is occupied in order to perform the preset data transmission from the terminal device side to the central control device, by utilizing the central control device. Since the required data can be set to the corresponding terminal device from the above, the terminal device is installed in a wide range, and the installation location is changed, and the number of installations increases and decreases relatively frequently. Even in this case, it is possible to remarkably simplify the data setting that needs to be performed each time the above-mentioned change or increase / decrease, and it is possible to eliminate a data setting error.

[Brief description of drawings]

FIG. 1 is a flow chart for explaining a data transmission operation including a data setting operation of the present invention, FIG. 2 is a schematic diagram showing an overall configuration of a data transmission system for carrying out the data setting method of the present invention, and FIG. FIG. 4 is a block diagram schematically showing the configuration of a receiving unit, FIG. 4 is a block diagram schematically showing the configuration of a transmitting unit, FIG. 5 is an operation sequence diagram, and FIG. 6 is a diagram showing a data format. (1) ... Central control unit, (2) ... Receiving unit, (3)
Public telephone line, (4) ... Transmission unit, (5) ... Terminal device

Claims (7)

[Claims] 1. In a data transmission system in which a plurality of terminal devices are connected to a central control device via a communication line, the central control device has a table storing identification data corresponding to each terminal device. If the terminal device occupies the communication line and performs data transmission to the central control device, the central control device sets the corresponding terminal device before the occupied state of the communication line is released. A data setting method for a terminal device characterized by transmitting data. 2. A data setting method for a terminal device according to claim 1, wherein the communication line is a public telephone line. 3. A data transmission system sends equipment management data corresponding to an installation location by each terminal device, and performs necessary data processing in the central control device based on the equipment management data transmitted from each terminal device. A data setting device for the terminal device according to claim 1 to be performed. 4. A data setting device for a terminal device according to any one of claims 1 to 3, wherein each terminal device is installed in a plurality of buildings. 5. The data setting device for a terminal device according to claim 4, wherein each terminal device periodically transmits the equipment status totalization data to the central control device. 6. A data setting device for a terminal device according to claim 4, wherein each terminal device detects an abnormality of the equipment and transmits the abnormality detection data to the central control unit. 7. A data setting device for a terminal device according to claim 1, wherein the data transmitted from the central control device to each terminal device includes at least identification data.