JP2005109571A - Intercom system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercom system capable of automatically setting an address even when a bus line forms a tree structure. <P>SOLUTION: Two bus line connection parts 11a, 11b are provided to a living room master unit 1 and master switches 12a, 12b for interrupting the connection to a connected bus line 6 are provided to the bus line connection parts 11a, 11b. Further, two downstream side bus line connection parts 16a, 16b for distributing the bus line 6 inside of each terminal are provided to first and second entrance slave units 2, 3 and first and second extension master units 4, 5, and the downstream side bus line connection parts 16a, 16b are provided with slave switches 17a, 17b for interrupting the connection to the connected bus line 6. Then a master microcomputer 1a of the living master unit 1 controls the master switches 12a, 12b and the slave switches 17a, 17b to sequentially provide an ID to each terminal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an interphone apparatus having an interphone terminal such as an entrance child machine or a living room master machine, and more particularly to an interphone apparatus capable of automatically setting an address for each connected interphone terminal.

For example, in the case of a plurality of entrance cordless handsets, an interphone device equipped with an extension base phone, or an expansion type interphone device, a pair of interphone devices composed of one living room base phone and one entrance cordless handset. Therefore, it is necessary to set an ID for each terminal in order to specify a communication destination.
Conventionally, the ID setting of terminals connected via bus lines such as such intercom devices has been provided with DIP switches at each terminal, and the user or installer operates the DIP switch at the terminal installation site. There are some which are manually set or automatically set as shown in Patent Document 1.
JP-A-9-116565

However, the form set at the site is likely to make a mistake in the ID setting, and if the same ID is set, communication cannot be performed normally, resulting in malfunction or confusion. Moreover, the automatic setting form as shown in Patent Document 1 is effective only when each terminal is connected in series to one bus line, and cannot be applied when the bus line has a tree structure.
In the case of an intercom device, when the terminals are connected in series, the terminals are connected as shown in FIG. 2A, for example. In FIG. 2, reference numeral 20 denotes a dwelling unit, 21 denotes an intercom terminal, and 22 denotes a bus line. In this case, it is troublesome to route the bus line 22, and particularly when the interphone terminal 21 is added, on the bus line 22 to be interposed. The bus line 22 had to be pulled out from the two intercom terminals 21 before and after the position, which was a heavy burden on the operator.
In this point tree structure, as shown in FIG. 3 (b), the bus line 22 may be pulled out and connected from the nearest intercom terminal 21, and the connection work is greatly reduced. Therefore, an intercom apparatus that can automatically set an ID even when each interphone terminal is connected in a tree structure has been desired.
In view of the above problems, an object of the present invention is to provide an intercom apparatus capable of automatically setting an address even when a bus line has a tree structure.

In order to solve the above-mentioned problem, the invention of claim 1 is an interphone apparatus that includes a master terminal and a plurality of slave terminals connected via a bus line, and is capable of bidirectional data transmission via the bus line. The master terminal and the slave terminal are provided with a bus line cutoff switch for cutting off the connection with the bus line at the connection part with the downstream bus line among the connection parts with the bus line, and the bus line has a tree structure. Therefore, at least one of the master terminal and the plurality of slave terminals distributes a plurality of bus lines inside the terminal so that a plurality of slave terminals can be connected downstream, and a bus is connected to each distributed bus line. A line cutoff switch is provided.
With this configuration, terminals can be connected via a tree-structured bus line, so there is no need to connect all of the front door units, living room base units, and extension base units in series. The degree of construction will increase and the construction will be much easier. Then, by operating the bus line cutoff switch, a terminal that can communicate with the master terminal can be selected, and an ID can be assigned to each slave terminal by the master terminal.
The master terminal refers to an interphone terminal such as a living room master device having a function of assigning an ID to another connected terminal, and the slave terminal is, for example, an extension parent to which an ID is assigned by the master terminal. An intercom terminal such as a machine or an entrance cordless handset.

According to a second aspect of the present invention, in the first aspect of the present invention, the master terminal has a master microcomputer that gives an ID to the slave terminal, has at least two master switches as bus line cutoff switches, and each of the plurality of slave terminals. Has a slave microcomputer having a data transmission / reception function, each slave terminal is connected to a master switch of the master terminal via a bus line, and the master microcomputer turns on one of the master switches to turn on one of the master switches. Of the slave terminals connected to the master terminal with one bus line connected, an ID is given to the slave microcomputer of one slave terminal in the connected state, and then given when a connection completion command from the slave microcomputer arrives The master switch turned off, one of the other master switches Is turned on, and then the ID is given to the slave microcomputer of the slave terminal connected to the master terminal, and then the ID is given to all slave terminals connected to the master terminal by performing the same operation. All the switches are turned on to be in a connected state, and mutual communication can be performed between terminals connected using a given ID.
With this configuration, a plurality of slave terminals can be connected to the master terminal, and the master terminal can automatically assign an ID to each connected slave terminal.

According to the invention of claim 3, in the invention of claim 2, at least one of the plurality of slave terminals connected to the master terminal has at least two slave switches as bus line cutoff switches, and the slave terminal Each slave microcomputer having a slave switch, which is further connected via a bus line, turns on one slave switch to connect one bus line in response to a command from the master terminal, and further connects the slave slaves. Give an ID to the slave microcomputer of the connected slave terminal of the terminal, and then when the command from the master terminal arrives, turn off the slave switch that was turned on and turn on one of the other slave switches, then connect By the command from the master terminal to the slave terminal in the state D. Similarly, operate the slave switches to give IDs to all further connected slave terminals, and assign IDs to all connected slave terminals in the same way, then turn on all master switches and slave switches. The terminals are connected to each other and can perform mutual communication between terminals connected using a given ID.
With this configuration, in addition to the master terminal, a slave terminal connected to the master terminal can also connect a plurality of slave terminals, further increasing the degree of freedom of wiring, and the master terminal is automatically connected to all connected slave terminals. An ID can be given.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the master terminal has a master microcomputer for giving an ID to the slave terminal, and each of the plurality of slave terminals has a slave microcomputer having a data transmission / reception function. The slave terminal connected to the terminal has at least two slave switches as bus line cutoff switches, and each slave terminal is further connected via the bus line, and the slave microcomputer of the slave terminal connected to the master terminal is the master terminal To turn on one of the slave switches, set one bus line to the connected state, and give an ID to the slave microcomputer of one connected slave terminal among the connected slave terminals. And then turn on when a command from the master terminal arrives Turn off the slave switch, turn on one of the other slave switches, then give an ID to the slave terminal in the connected state by the command from the master terminal, and operate the slave switch in the same way to connect all further After assigning IDs to the slave terminals, and then assigning IDs to all slave terminals connected in the same manner, all slave switches are turned on and connected, and the given ID is used. It is possible to perform mutual communication between the terminals connected to each other.
With this configuration, a plurality of slave terminals can be further connected to the slave terminals connected to the master terminal, and the master terminal can automatically assign IDs to all the connected slave terminals.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the master terminal has a communication terminal for communicating with a personal computer, and the connected personal computer can display the connection status of the slave terminal. It is characterized by being.
With this configuration, the connection status of each terminal can be easily checked.

As described above, according to the present invention, even if each terminal constituting the intercom apparatus is tree-connected, an ID can be automatically assigned to each terminal, so that an operator does not need to set an ID for each terminal. No wrong ID is given. In addition, the connection status of each connected terminal can be easily checked using a personal computer.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of an embodiment of an intercom apparatus according to the present invention. 1 is a master unit as a master terminal, 2 is a first entrance terminal as a slave terminal, and 3 is a first terminal as a slave terminal. Reference numeral 2 denotes a first extension master unit as a slave terminal, 5 denotes a second extension master unit as a slave terminal, and the first entrance slave unit 2 serves as a first set of slave terminals in the living room base unit 1. The second entrance slave unit 3 is connected, the first extension master unit 4 and the second extension master unit 5 are connected to the first entrance slave unit 2 as the second set of slave terminals, and the room master unit 1 as the master terminal Slave terminals are connected in a tree structure via two bus lines 6. Reference numeral 7 denotes a personal computer (hereinafter simply referred to as a personal computer) capable of communicating with the living room master unit 1.

  The living room master 1 includes a microcomputer 1a that controls the living room master 1, two bus line connecting portions 11a and 11b, and two master switches 12a and 12b as bus line cutoff switches that block transmission and reception of signals to and from the bus line 6. The microcomputer 1a is provided with a communication terminal 13 for connecting the personal computer 7. The microcomputer 1a operates as a master microcomputer for setting the ID of the connected slave terminal, and the ID of each slave terminal can be set by the living room master unit 1.

The first entrance slave device 2, the second entrance slave device 3, the first extension master device 4, and the second extension master device 5, which are slave terminals, include microcomputers 2a, 3a, 4a, and 5a in this order. Also, one upstream bus line connecting portion 15 that connects the upstream bus line 6, two downstream bus line connecting portions 16 a and 16 b that connect to the downstream bus line 6, and downstream bus line connecting portions 16 a and 16 b A total of two slave switches 17 (17a, 17b) are provided as bus line shut-off switches for shutting off from the bus lines for each downstream bus line connection, and the microcomputers 2a, 3a, 4a, 5a are slaves. It operates as a slave microcomputer that controls the terminal and controls data transmission / reception with the living room master unit 1.
The living room base unit 1, the first extension base unit 4 and the second extension base unit 5 are provided with a microphone and a speaker for talking with the first entrance unit 2 or the second entrance unit 3, and the first and second units. The entrance cordless handsets 2 and 3 are provided with a call button, a microphone and a speaker for talking with the room master, but are omitted here.

The ID setting of each intercom terminal (slave terminal) of the intercom apparatus configured as described above is performed as follows. When the power is turned on, the microcomputer (hereinafter referred to as a master microcomputer) 1a of the living room master unit 1a turns on one master switch 12a, that is, the first connected to the living room parent machine 1 and one downstream bus line 6, for example. At the same time, the first master switch 12b is turned off, that is, the second master handset 3 connected to the other downstream bus line 6 is turned off. Then, the master microcomputer 1a outputs an ID signal. This ID information can be received only by the microcomputer (hereinafter referred to as slave microcomputer) 2a of the first entrance slave unit 2 in the connected state, and the first entrance slave unit 2 receives each as its own ID information. Is granted.
Next, the master microcomputer 1a similarly applies the ID to the second entrance terminal 3 that is the other slave terminal connected to the living room base unit 1 with one master switch 12a turned off and the other master switch 12b turned on. give. Thus, the IDs of the first set of slave terminals are automatically set correctly.

Thereafter, the process proceeds to the ID setting of the second set of slave terminals. When the first set of ID settings is completed, the two master switches 12a and 12b are always on. Then, the slave microcomputer 2a of the first entrance cordless handset 2 transmits the number of slave switches 17 to the master microcomputer 1a (here, since there are two slave switches 17).
When the master microcomputer 1a receives the number of slave switches, the master microcomputer 1a, for example, turns on one slave switch 17a connected to the first extension base unit 4 to the slave microcomputer 2a, and the other side to which the second extension base unit 5 is connected. A command is transmitted to turn off the slave switch 17b. When the slave microcomputer 2a of the first entrance cordless handset 2 receives the command, it turns on the slave switch 17a to which the first extension base unit 4 is connected and turns off the other slave switch 17b.

  Then, the master microcomputer 1 a outputs an ID different from the ID given to the first entrance handset 2 or the second entrance handset 3 to the bus line 6. This ID indicates that all the slave microcomputers connected to the bus line 6 at this time, here, the first and second entrance slave units 2 and 3 and the first extension master unit 4 slave microcomputers 2a, 3a and 4a. The slave microcomputers 2a and 3a of the first and second entrance cordless handsets 2 and 3 that have already received the ID ignore the information. For this reason, the slave microcomputer 4a of the first additional base unit 4 for which no ID is set acquires the received ID as its own ID.

Thereafter, the master microcomputer 1a turns off the slave switch 17a of the bus line 6 to which the first extension master unit 4 is connected to the first entrance slave unit 2, and the bus line to which the second extension master unit 5 is connected. 6 to turn on the slave switch 17b, and similarly set the ID of the slave microcomputer 5a of the second extension base unit 5.
Next, the slave microcomputer 3a of the second entrance cordless handset 3 transmits the number of slave switches 17 to the master microcomputer 1a (here, since there are two slave switches 17).
When the master microcomputer 1a receives the number of slave switches 17, the master microcomputer 1a transmits a command to the slave microcomputer 3a so that, for example, one slave switch 17a is turned on and the other slave switch 17b is turned off. When the slave microcomputer 2a of the first entrance cordless handset 2 receives the command, it turns on the slave switch 17a and turns off the other slave switch 17b.

  Then, the master microcomputer 1 a outputs an ID different from the ID given to the first entrance slave unit 2, the second entrance slave unit 3, the first extension master unit 4, or the second extension master unit 5 to the bus line 6. . The IDs are all slave microcomputers connected to the bus line 6 at this time, here, each slave microcomputer 2a of the first and second entrance slave units 2, 3 and the first and second extension master units 4, 5. 3a, 4a, and 5a receive, but all connected slave microcomputers 2a, 3a, 4a, and 5a ignore the information. Therefore, the master microcomputer 1a grasps that no terminal is connected to the tip of the slave switch 17a of the slave microcomputer 3a. Thereafter, the master microcomputer 1a sends a command for turning off the slave switch 17a of the bus line 6 and turning on the slave switch 17b of the bus line 6 to the second entrance cordless handset 3. Knows that the terminal is not connected.

  Thereafter, the process proceeds to the ID setting of the third set of slave terminals. The slave microcomputer 4a of the first extension base unit 4 transmits the number of slave switches 17 to the master microcomputer 1a (here, since there are two slave switches 17). When the master microcomputer 1a receives the number of slave switches, the master microcomputer 1a transmits a command in the same procedure as the slave microcomputer 3a, and grasps that a terminal is not connected to the end of the slave switches 17a and 17b of the slave microcomputer 4a. To do.

Next, the slave microcomputer 5a of the second extension base unit 5 transmits the number of slave switches 17 to the master microcomputer 1a (here, since there are two slave switches 17). When the master microcomputer 1a receives the number of slave switches 17, the master microcomputer 1a transmits a command in the same procedure as the slave microcomputer 3a, and confirms that no terminal is connected to the slave switch 17a and slave switch 17b of the slave microcomputer 5a. To grasp. In this way, correct IDs can be automatically and sequentially set.
When ID setting of all the slave terminals connected to the living room base unit 1 is completed in this way, data transmission can be performed between all the terminals by turning on all the master switches 12 and all the slave switches 17. , Mutual communication becomes possible. In addition, the personal computer 7 connected to the living room master unit 1 communicates with the master microcomputer 1a to receive and display the connection status of the individual slave microcomputers 2a to 5a, thereby displaying the connection status of the slave terminals 2 to 5. It can be visually confirmed and the connection status can be easily checked.

In this way, interphone terminals can be connected via a tree-structured bus line, eliminating the need for serial connection of all devices such as entrance units, living room base units, and extension base units. Installation work is greatly simplified.
Then, by providing a plurality of downstream bus line connection sections on both the master terminal and the slave terminal, a plurality of slave terminals can be easily connected, and the degree of freedom of connection increases. In addition, by providing a bus line cutoff switch for each bus line connection unit, an ID can be automatically assigned to each connected slave terminal by a master terminal, and an operator has to set an ID for each terminal. Is no longer necessary, and no wrong ID is assigned.

In the above embodiment, the number of slave terminals is four. However, the number of slave terminals can be increased by connecting to the downstream side of the bus line, and by increasing the number of bus line cutoff switches of the master terminal and the slave terminal, The number of slave terminals connected in parallel can also be increased. In addition to the above, the slave terminal may be a television camera device installed for crime prevention.
In addition, although the master terminal is used as the master unit in the room, another interphone terminal, for example, an interphone control device dedicated to control can be installed to serve as the master terminal.
Furthermore, although all terminals are configured to be able to connect a plurality of downstream bus lines, a terminal that does not connect a plurality of slave terminals in parallel may have only one bus line connection section that connects the downstream bus lines. Alternatively, a terminal that does not have a downstream bus line connection unit and does not connect a slave terminal to the downstream side may be connected as a terminal terminal.

It is a block diagram which shows an example of embodiment of the intercom apparatus which concerns on this invention. It is explanatory drawing of the connection form of each terminal of an intercom apparatus, (a) has shown the case where it connects in series, (b) has shown the case of tree connection.

Explanation of symbols

1 ・ ・ Home master unit (master terminal), 1a ・ ・ Microcomputer (master microcomputer), 2 ・ ・ First entrance slave unit (slave terminal), 2a ・ ・ Microcomputer (slave microcomputer) 3 ・ ・ Second entrance slave unit ( Slave terminal), 3a .. microcomputer (slave microcomputer), 4. first extension master (slave terminal), 4a. Microcomputer (slave microcomputer), 5. second extension master (slave terminal), 5a. · Microcomputer (slave microcomputer) 6 · · Bus line, 7 · · Personal computer, 11a, 11b · · Bus line connection, 12a, 12b · · Master switch (bus line cutoff switch), 13 · · Communication terminal, 15 · -Upstream bus line connection section, 16a, 16b-Downstream bus line connection section, 17a, 17b-Slave switch (bus line cutoff switch).

Claims (5)

An intercom device comprising a master terminal and a plurality of slave terminals connected via a bus line, capable of bidirectional data transmission via the bus line,
The master terminal and the slave terminal are provided with a bus line cutoff switch for cutting off the connection with the bus line at a connection part with the downstream bus line among the connection parts with the bus line, In order to have a structure, at least one of the master terminal and the plurality of slave terminals distributes the bus line to a plurality of terminals within the terminal so that a plurality of slave terminals can be connected to the downstream side. An intercom apparatus comprising the bus line cutoff switch in a line. The master terminal has a master microcomputer that gives an ID to the slave terminal, and has at least two master switches as the bus line cutoff switch, and each of the plurality of slave terminals has a data transmission / reception function. Each of the slave terminals is connected to the master switch of the master terminal via a bus line,
The master microcomputer turns on one of the master switches and connects one bus line to a connected state among the slave terminals connected to the master terminal. After that, when a connection completion command from the slave microcomputer arrives, the master switch to which the ID is given is turned off, one of the other master switches is turned on, and then the slave connected to the master terminal After giving the ID to the slave microcomputer of the terminal and then giving the ID to all the slave terminals connected to the master terminal by performing the same operation, all the master switches are turned on and connected, and the given ID is used. 2. The interphone according to claim 1, wherein mutual communication can be carried out between the terminals connected in this manner. Apparatus. Among the plurality of slave terminals connected to the master terminal, at least one has at least two slave switches as the bus line cutoff switch, and the slave terminals are further connected via bus lines, respectively.
The slave microcomputer of the slave terminal having the slave switch turns on one slave switch to set one bus line in a connected state by a command from the master terminal, and further, a slave in a connected state among the connected slave terminals. ID is given to the slave microcomputer of the terminal, and then when the command from the master terminal arrives, the slave switch that was turned on is turned off and one of the other slave switches is turned on. ID is given by a command from the master terminal, and the slave switch is similarly operated to give IDs to all further connected slave terminals.
If IDs are assigned to all connected slave terminals in the same way, all master switches and slave switches are turned on to be in a connected state, and each terminal connected using the given ID can perform mutual communication. The intercom apparatus according to claim 2, wherein: The master terminal has a master microcomputer that gives an ID to the slave terminal and each of the plurality of slave terminals has a slave microcomputer having a data transmission / reception function;
The slave terminal connected to the master terminal has at least two slave switches as the bus line cutoff switch, and each slave terminal is further connected via the bus line, and the slave microcomputer of the slave terminal connected to the master terminal In response to a command from the master terminal, one of the slave switches is turned on, one bus line is connected, and one of the connected slave terminals is in a connected state. When the command from the master terminal arrives, the slave switch turned on is turned off, one of the other slave switches is turned on, and then the slave terminal in the connected state is mastered. ID given by command from terminal Giving an ID to all further connected slave terminal by operating the switch,
After that, if IDs are assigned to all slave terminals connected in the same manner, all slave switches are turned on to be in a connected state, and between each terminal connected using the given ID. The intercom apparatus according to claim 1, wherein mutual communication can be performed. The said master terminal has a communication terminal for communicating with a personal computer, and the connected personal computer can display the connection status of the said slave terminal. Intercom device.

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