JP3192184B2 - Remote monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transmits a transmission signal from a central control unit to an operation terminal and a control terminal branched and connected to the central control unit via a two-wire signal line. Accordingly, the present invention relates to a remote monitoring and control system in which a load connected to a control terminal is controlled when a load control switch connected to the operation terminal is operated.

[0002]

2. Description of the Related Art Conventionally, a remote monitoring control system of this type having a configuration as shown in FIG. 4 has been known.
That is, a plurality of monitoring terminals 2 for monitoring the switches S _{1 to} S ₄ and a control terminal for controlling the loads L _{1 to} L ₄ to the central controller 1 via a two-wire signal line Ls. Bowl 3,
A wireless relay terminal 4 to which the wireless signal line Lw is connected, an external interface terminal 5 to which the external control device 5a is connected, and the like are connected. Each of the terminals 2 to 5 is set with an individual address, and the central controller 1 recognizes the terminals 2 to 5 using the addresses.

[0005] The central control unit 1 transmits a transmission signal Vs having a format as shown in FIG. 5A to a signal line Ls. That is, the start pulse S indicating the start of signal transmission
T, mode data signal MD indicating signal mode, terminal 2
, A control data signal CD for transmitting control data for controlling the loads L _{1 to} L ₄ , a checksum data signal CS for detecting a transmission error, Terminal 2
5 is a multi-pole (± 24 V) time division multiplexed signal composed of a return standby signal WT for setting a period for receiving a return signal from .about.5, and data is transmitted by pulse width modulation (FIG. 5). (B)).

In each of the terminals 2 to 5, when the address data of the transmission signal Vs received via the signal line Ls matches the set address data, the control data of the transmission signal Vs is fetched and the transmission signal Vs is received. The monitoring data signal is set to the current mode (signal line L) in synchronization with the return waiting signal WT.
s as a signal transmitted by short-circuiting s through an appropriate low impedance).

[0005] The central control unit 1 has a mode data signal M
D is a dummy mode, and each of the terminals 2 to 5 is provided with a dummy signal transmitting means for transmitting a dummy transmission signal having an unset free address as address data.
Further, the central control device 1 generates an interrupt signal when receiving an interrupt signal Vi as shown in FIG. 5C generated from any of the other terminals 2, 4, and 5 except for the control terminal 3. After detecting the generated terminals 2, 4, and 5, an interrupt processing means for accessing the terminals 2, 4, and 5 and returning monitoring data is also provided. That is, when the dummy signal is transmitted by the dummy signal transmitting means and the interrupt signal Vi generated from the terminals 2, 4, and 5 is detected in synchronization with the start pulse signal ST of the dummy transmission signal at all times, The transmission signal Vs in which the mode data signal MD is set to the address confirmation mode is transmitted from the central control unit 1 by the interrupt processing means. The terminals 2, 4, and 5, which have generated the interrupt signal Vi, transmit the transmission signal V in the address confirmation mode.
s, a return standby signal WT of the transmission signal Vs is received.
The address data set in the terminals 2, 4, and 5 is returned in synchronization with the address data. In this way, the central controller 1 obtains the addresses of the terminals 2, 4, and 5 that have generated the interrupt signal Vi, and uses the obtained addresses to use the terminals 2, 4, and 5.
By accessing the terminal 5, the monitoring data from the terminals 2, 4, and 5 is received.

[0006] In the central control unit 1, the corresponding loads L ₁ to L ₁ to L ₁ to L ₂ are monitored based on the monitoring data returned from the terminals 2, 4, 5.
L ₄ together to create a control data to be transmitted to the terminal device 3 for controlling the connected transmission signal V including the control data
s is sent to the signal line Ls, and transmit the control data to the terminal device 3 for controlling a corresponding controlling the load L ₁ ~L _4. Here, the wireless relay terminal 4 is connected to a receiver Y that receives a wireless signal such as infrared light transmitted from the transmitter X.
Is connected to the wireless signal line Lw to which the wireless signal is connected, and relays the wireless signal received by the receiver Y. That is, the wireless signal from the transmitter X received by the receiver Y is received via the wireless system signal line Lw, and the data is transferred to the central controller 1. The terminal 5 for the external interface is a terminal that transmits data to and from the external control device 5a.
Further, a control terminal 3 is provided in the distribution board 6 and the relay control panel 7, and the terminal 3 is provided in a body having a size according to the common size of the distribution board for load control. Are stored together with the latching relay 8.

By the way, the switches S _{1 to} S ₄ and the load L ₁
Between the ~L ₄ must configure the corresponding relationship, setter 9 used by connecting to the correspondence set in the signal line Ls is provided. That is, the setting unit 9 simulates each of the terminals 2 to 5 and transmits and receives data to and from the central control device 1, thereby obtaining a correspondence relationship with the correspondence table storage unit provided in the central control device 1. Write the data.

[0008]

When the setting device 9 as described above is used, the correspondence data is written in the correspondence table storage section of the central control unit 1 by transmitting the transmission signal Vs. The transmission and reception of the transmission signal Vs is required for the terminals 2 to 5, and when a large number of terminals 2 to 5 are connected to the signal line Ls, there is a problem that a long time is required for setting. In particular, the mode data signal MD
As collective control mode, in the case of collective control in association with a plurality of load L ₁ ~L ₄ in one switch S ₁ to S _4, a number of load L ₁ ~L ₄ one of the switches S ₁ ~ S
There is a problem that it takes a long time because it corresponds to ₄ . Addition the case the same corresponding relationship switch S ₁ to S ₄ and load L ₁ ~L ₄ In multiple Remote supervisory control system is set, also the mapping data written into the corresponding table storing portion is set in the same Despite being good, in the conventional configuration, the correspondence table storage unit is
Therefore, the correspondence data is set in the same procedure for each central control device 1,
There is a problem that the setting takes time and a setting error easily occurs.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem. In the case where the transmission signal is not used to set the correspondence between the switch and the load, the setting time is shortened and the correspondence is the same. Aims to provide a remote monitoring and control system that does not require a new setting operation.

[0010]

Means for Solving the Problems] In the present invention of claim 1, the central control unit via a signal Line of the terminal device a two-wire terminal unit and control for a plurality of operations each different in address is set
A branch connection to a central control transmission signal and a return wait signal for setting the reception period of the return signal from the control data signal and the terminal device that instructs the address data signal and the control content for accessing the address of the terminal device Each terminal device is appropriately accessed from the central control device by transmitting the signal to the signal line from the device, and the central control device is generated by operating a load control switch provided on any of the operation terminals. Receiving the monitoring data to be synchronized with the return standby signal, transmitting the control data created based on the monitoring data to the control terminal in which the correspondence is set in advance, and connecting to the control terminal. Control data, and the correspondence data for associating the switches with the loads comprises an IC card detachably connected to the central controller.
Have been registered in corresponds table storage unit, the correspondence table Symbol
Correlation data with the storage unit separated from the central control unit
Is provided separately from the central controller,
Chuo controller the correspondence between data registered in the correspondence table storage unit, is detachably connected to the central control unit
Further, there is provided a data copying means for copying data to a copying storage unit comprising another IC card.

According to the second aspect of the present invention, the central control unit has a collective control mode for collectively controlling a plurality of loads by operating one switch, and the correspondence table storage unit stores correspondence data in the collective control mode. It has an area to register .

[0012]

According to the first aspect of the present invention, the central control unit has a switch.
Correspondence table storage setting the correspondence between switches and loads
The unit uses an IC card that is removable from the central control unit.
Is stored in the correspondence table storage unit.
Is supported by a setting device provided separately from the central control unit.
Data can be written via transmission signals.
Setting of the relationship data can be performed without the need. Sand
That is, data is transmitted between the setter and the central controller using the transmission signal.
Set time per set compared with data transfer
In particular, many correspondences
Setting, the correspondence between the switch and the load must be set.
This has the advantage that it can be performed in a short time. Also,
The correspondence data registered in the correspondence table storage unit is
A data copying means is provided for copying to a copying storage unit composed of an IC card detachably connected to the central control unit, so that if the correspondence data is the same, the data is copied to the copying storage unit and copied to another central storage unit. By simply connecting to the control device, the correspondence between the switch and the load can be set equally, and a remote monitoring control system having the same correspondence can be constructed in a very short time .

In the configuration of claim 2, the central control device has the collective control mode, and the correspondence table storage section has an area for registering the correspondence data in the collective control mode. By employing the configuration of the present invention for the setting of the correspondence data in the collective control mode for making a plurality of loads correspond, the effect of the present invention of shortening the setting time of the correspondence can be made particularly remarkable. .

[0014]

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1A, a central control unit 1 includes a signal processing unit 10 for performing various operations described as a conventional technique, and transmits a transmission signal to a signal line Ls via a transmission processing unit 11. Is sent. Also, switch S
Correspondence between ₁ to S ₄ and the load L ₁ ~L _4, the connector 1
2 is stored in a correspondence table storage unit 13 composed of an IC card detachably connected via the PC 2.

Therefore, any one of the switches S _{1 to} S
₄ is operated and an interrupt signal Vi is sent from the operation terminal 2
Occurs, the signal processing unit 10 detects the terminal device 2 that has generated the interrupt signal Vi, returns the monitoring data, and sends the monitoring data to the control terminal device 3 according to the correspondence data stored in the correspondence table storage unit 13. Te transmits control data based on the monitoring data, and to control the load L ₁ ~L _4. Here, the central control device 1 has one switch S _1-
A can operate in batch control mode for collectively controlled multiple loads L ₁ ~L ₄ by S _4, upon receiving the monitoring data by the operation of a particular switch S ₁ to S _4, the collective control mode The transmission signal Vs including the mode data signal is transmitted. Relationship between the switches S ₁ to S ₄ in collective control mode and the load L ₁ ~L ₄ is registered in a specific area provided on the corresponding table storage unit 13. That is, the switch S ₁
The to S ₄ and the load L ₁ ~L _4, the normal control mode corresponding to the one-to-one, the collective control mode with each other to correspond to one-to-many.

On the other hand, the central controller 1 has a connector 14
, A copying storage unit 15 composed of an IC card can also be detachably connected. The signal processing unit 10 is provided with a copy processing unit. By operating the backup switch SW, the correspondence data stored in the correspondence table storage unit 13 is copied to the copy storage unit 15. Has become.

As shown in FIG. 2, the body 17 of the central control unit 1 is provided with a pair of slots 18 and 19 into which the correspondence table storage unit 13 and the copy storage unit 15 can be removably inserted. And the backup switch S
The operation part of W is exposed. Further, an operation unit of a password setting switch PS including a dip switch described later is provided.

A setting unit 20 for writing the correspondence data in the correspondence table storage unit 13 is provided separately from the central control unit 1, and the setting unit 20 has the configuration shown in FIG.
As shown in FIG. 5, an operation input unit 21 including a keyboard,
A display unit 22 for displaying data input from the operation input unit 21; and a connector 24 for performing a write operation when the data displayed on the display unit 22 is desired data.
And a data processing unit 23 that writes the correspondence data into the correspondence table storage unit 13 connected via the. After the correspondence data is written into the correspondence table storage unit 13 by the setting unit 20 in this manner, the correspondence table storage unit 13 is removed from the setting unit 20 and the connector 12 of the central control device 1 is removed.
, The central controller 1 operates according to the correspondence data set by the setting device 20. Therefore, the correspondence data can be independently set by the setting unit 20 without using the transmission signal Vs, and the time required for the setting is reduced as compared with the case where data is transmitted and received by the transmission signal Vs. Because

The central control unit 1 is provided with an interface 16 so that an external computer device can be connected. The computer device Z includes a central control device 1
The program monitors the transmission status of signals between the terminal and each of the terminals 2 to 5, and a program is set so that various transmission statuses can be displayed on the display device. That is, when receiving a command from the computer Z, the central controller 1 checks the return signal for each operation mode set by the mode data signal, and returns the result to the computer Z. If an error has occurred in the return signal, the type of the error is displayed on the display device. The type of the identifiable error is displayed in addition to the parity error which can be detected using the line monitor in the related art, as well as the pulse width error and the return timing error. Further, the presence or absence of connection of the terminals 2 to 5 can be detected and displayed on the display device. In this way, by displaying the type of error in the return signal and the presence / absence of the terminals 2 to 5, the transmission state can be monitored in detail, and the cause of the failure can be easily detected and maintenance can be facilitated.

As shown in FIG. 3 (a), the terminals 2 to 5 transmit the transmission signal Vs transmitted through the signal line Ls.
Upon receiving through 1, to determine a match with the set address data to the address data and function setting unit 32 of the transmission signal Vs, transmit or load if they match the operating state of the switch S ₁ to S ₄ as the monitoring data A signal processing unit 30 for controlling L _{1 to} L ₄ is provided. Further, a power supply circuit 33 for rectifying and stabilizing the transmission signal Vs transmitted through the signal line Ls and supplying power to each unit is provided. Function setting section 3
Reference numeral 2 denotes a function setting unit 40 which is constituted by a rewritable memory such as an EEPROM and is provided separately from the terminals 2 to 5.
The function data for setting the functions of the terminals 2 to 5 is written in the function setting unit 32 based on the wireless signal transmitted from the wireless transmission / reception unit 34 and received by the wireless transmission / reception unit 34. Here, the function data includes, in addition to the address data, data on the types of the terminals 2 to 5 and the operations of the terminals 2 to 5.

The function setting unit 40 includes an operation input unit 41 having a keypad, a display unit 42 for performing display according to an input from the operation input unit 41, and a wireless transmission / reception unit 34 of the terminals 2 to 5. And a signal processing unit 44 including a microprocessor for controlling the operation of the function setting unit 40. The operation of the signal processing unit 44 is determined by a program stored in a program memory 46 composed of an IC card removably connected via a connector 45. In other words, the function setting unit 40 includes a write mode for writing function data to the function setting unit 32 and a function setting unit 32.
The operation mode in each operation mode can be changed by replacing the program memory 46 with a check mode for checking the function data written in the program memory, a correction mode for correcting the function data, and the like. Therefore, functions can be easily improved by changing the program.

A password setting unit 35 is provided in each of the terminals 2 to 5, and the password set by the password setting switch PS of the central control unit 1 is used when the remote monitoring control system is initialized. 35. On the other hand, a password is written in the program memory 46 of the function setting device 40, and the password is transmitted by a wireless signal transmitted from the function setting device 40 to the terminals 2 to 5. Upon receiving the password from the function setting unit 40, the terminals 2 to 5 check the password with the password stored in the password setting unit 35, and permit the rewriting of the contents of the function setting unit 32 only when the passwords match. It has become. Therefore, access control to the terminals 2 to 5 can be performed from the function setting device 40, and it is possible to prevent an outsider from changing the functions of the terminals 2 to 5.

[0024]

According to the first aspect of the present invention , a central control unit is provided .
Table that sets the correspondence between switches and loads
IC card whose storage unit is removable from the central controller
The correspondence table storage
Is controlled by a setting device provided separately from the central control unit.
Response data can be written,
It is possible to set the correspondence data without any intervention. You
In other words, between the setting unit and the central control unit using the transmission signal
Set per set compared to sending and receiving data with
It saves time, especially for many correspondences
When setting the switch, set the correspondence between the switch and the load.
This has the advantage that the setting can be performed in a short time. Ma
In addition, since there is provided data copying means for copying the correspondence data registered in the correspondence table storage unit to a copy storage unit composed of an IC card detachably connected to the central control device, the correspondence data is stored. If they are the same, the correspondence between the switch and the load can be set equally with a simple operation of copying to the copy storage unit and connecting to another central control unit. There is an effect that a remote monitoring and control system having the above can be constructed .

According to a second aspect of the present invention, the central control unit has a collective control mode, and the correspondence table storage unit has an area for registering the correspondence data in the collective control mode. By employing the configuration of the present invention for the setting of the correspondence data in the collective control mode for making a plurality of loads correspond, the effect of the present invention of shortening the setting time of the correspondence can be made particularly remarkable. It is.

[0026]

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment, wherein FIG. 1A is a block diagram of a central control device, and FIG. 1B is a block diagram of a setting device.

FIG. 2 is a front view showing the appearance of a central control device used in the embodiment.

FIG. 3 shows an embodiment, in which (a) is a block diagram of a terminal device,
(B) is a block diagram of a function setting device.

FIG. 4 is a schematic configuration diagram of a remote monitoring control system according to the present invention.

FIG. 5 is an explanatory diagram of the operation of the remote monitoring control system according to the present invention.

[Explanation of symbols]

1 the central control device 2 the operation terminal 13 corresponding table storage unit 15 20 setter storage unit copy of the terminal device 3 for controlling for L ₁ ~L ₄ load Ls signal lines S ₁ to S ₄ switch SW backup switch

Claims (2)

(57) [Claims] 1. A branch connected to the central control device via a signal Line of two-wire terminal device for a terminal device and control for a plurality of operations that address is set to each other, access to the address of the terminal device A central control unit transmits a transmission signal including an address data signal to be transmitted, a control data signal indicating a control content, and a return wait signal for setting a reception period of a return signal from the terminal device to the signal line from the central control unit. The central controller receives the monitoring data generated by operating the load control switch provided on any of the operation terminals in synchronization with the return standby signal. Then, the control data created based on the monitoring data is transmitted to the control terminal in which the correspondence is set in advance, and the load connected to the control terminal is controlled. , The correspondence data for associating the switches with the loads is connected to the central control unit in a detachable manner.
It has been registered in corresponds table storage unit consisting of C cards, like separation of the correspondence table storage unit from the central control unit
The setting device that writes the correspondence data in the state
Provided separately, Chuo controller copies the correspondence data registered in the correspondence table storage unit, the copying storage portion made of other IC card detachably connected to the central control device data A remote monitoring control system comprising copying means. 2. The central control device has a collective control mode for collectively controlling a plurality of loads by operating one switch, and the correspondence table storage unit has an area for registering correspondence data in the collective control mode. 2. The remote monitoring and control system according to claim 1, wherein: