JPH038626B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a parent-child type intercom device used in a hospital nurse call system or the like.

Conventional configurations and their problems Generally, parent-child intercom devices have only one
This system is simply configured so that a plurality of slave units can be connected to a base unit, and is not necessarily sufficient for use as a hospital nurse call system. In other words, when used as a hospital nurse call system, the nurse station may be separated into several parts, and the above-mentioned several base units may be commonly connectable to the above-mentioned multiple slave units. desirable. However, conventionally used parent-child intercom devices are only configured so that multiple child devices can be connected to one parent device independently.
When used as the above-mentioned hospital nurse call system, it was not necessarily sufficient.

On the other hand, recently, a configuration in which multiple base units can be commonly connected to multiple slave units has been developed; The system is completely divided into machines, each with a separate circuit configuration, resulting in extremely low productivity as a whole, and furthermore, once they are installed at the nursing station, they cannot be easily changed and used. There was a problem.

Purpose of the Invention The present invention eliminates the above-mentioned drawbacks of the conventional technology, and allows multiple base units to be easily connected to multiple slave units with a simple configuration. The object of the present invention is to provide an excellent interphone device that can be used as a main base unit or a sub base unit as desired.

Structure of the Invention The present invention uses a plurality of base units with the same configuration that function as both main and sub base units, and is configured such that these base units can be operated as the main base unit or the sub base unit at will. be.

DESCRIPTION OF EMBODIMENTS FIG. 1 is a schematic configuration diagram of an embodiment of an intercom device of the present invention, in which M ₁ and M ₂ are base units, T ₁ , T ₂ . . . Tn are call signal lines C, respectively.
Repeaters connected to the base units M ₁ and M ₂ via the data line E and the ground line G, S ₁₁ , S ₁₂ , S ₂₁ ,
S ₂₂ ...S _o1 and S _o2 are respectively the above repeaters T ₁ and T ₂ ...T _o
This is a call switch for each handset connected to the

The base units M ₁ and M ₂ are not only electrically connected to each other via the call signal line C, data line E, and ground line G, but also the data lines D and each of the base units M ₁ and M ₂ are The main units M ₁ and M ₂ are electrically connected to each other via an in-use signal line B that transmits an in-use signal.

FIG. 2 is a schematic block diagram showing the internal configuration of the master units M ₁ and M _2. In the figure, 1 indicates the main/sub setting signal obtained by the main/sub setting switch S ₀ or the key operation unit 4. is an input, and outputs the main setting signal from the key operation section 4 in priority to the main setting signal from the main/sub setting switch _S0 . , an in-use detection circuit that detects an in-use signal transmitted from another base unit and outputs a predetermined signal; 3 is an in-use detection circuit whose input end is connected to the call signal line C, and is used to receive a call from a slave unit; A call detection circuit detects when a signal is transmitted, and 4 corresponds to each handset for operation when you want to call a handset or respond to a call from a handset. 5 is an input section for inputting the respective outputs of the signal selection circuit 1, the in-use detection circuit 2, and the call detection circuit 3; 3 is a continuous read-only memory ROM; 7 is an input section 5 and signal processing means connected to ROM 6, etc., 8
1 is an output unit connected to the signal processing means 7; 9 is a memory RAM that can be continuously written to and stores whether the parent unit is the main unit or the sub unit; 10 is a slave unit that is called in response to the output of the output unit 8. 11 is a ring tone generation circuit that generates a ring tone according to the output of the output unit 8 when a call is received from the slave device; 12 and 13 are data lines, respectively; E, input/output interface circuit connected to data line D; 14, signal line B in use;
This is an input/output section connected to the input/output interface circuits 12 and 13 mentioned above.

FIG. 3 is a schematic block diagram showing the internal structure of repeaters T _{1 ,} T _{2 .} . . 16 is an input/output interface circuit connected to the data line E, 17 is a data receiving circuit connected to the input/output interface circuit 16, and 18 is a repeater number received by the data receiving circuit 17 and a preset self. A repeater number matching detection circuit which compares the repeater numbers of the two with each other and outputs a predetermined signal when they match, and 19 is driven by the output of the detection circuit 18 and contains number information of a handset having a call switch turned on. A handset number detection circuit that outputs
20 connects the output of the handset number detection circuit 19 to the data line E via the input/output interface circuit 16.
This is a transmitting circuit that transmits data to

In the above embodiment, it is assumed that the main/sub setting switch S ₀ of the parent device M ₁ is set to be off, and the main/sub setting switch S ₀ of the parent device M ₂ is set to be on. When the key operation section 4 is not operated, the on/off information of the main/sub setting switch _S0 is directly applied via the signal selection circuit 1 to the input section 5 constituting the microcomputer. If no in-use signal is transmitted from another base unit to the in-use signal line B, no output will appear in the in-use detection circuit 2, so the main/sub settings input to the input section 5 The on/off information of the switch _S0 is directly applied to the signal processing means 7 constituting the microcomputer. Therefore, in these states, the signal processing means 7 sets the information of either the main or sub side to its own so that the signal processing means 7 performs the main/sub signal processing operation based on the on _/ off information of the main/sub setting switch S0.
Memory in RAM9. That is, the main unit M ₁ ,
When the main/sub setting switch S ₀ of M ₂ is set to off or on as described above, the respective master units M ₁ and M 2 operate as the main unit and the unit unit M ₂ operates as the sub unit, respectively, so that their own RAM9 is Memorize the main and sub information of.

When the main and sub-information of the main units M ₁ and M ₂ is stored in the RAM 9 of each main unit M 1 and M 2 in this way, each of the main units M ₁ and M ₂ subsequently stores the main and sub-information stored in the RAM 9 of each unit. You will be able to perform one of the secondary actions.

Now, as mentioned above, it is assumed that base unit M ₁ is set to operate as the main unit and base unit M ₂ is set to operate as the sub unit, and in this state, a certain slave unit connected to repeaters T ₁ to Tn When the ringing switches S ₁₁ to S _o2 are turned on, this is detected by the ringing detection circuit 15, and information that any of the ringing switches S ₁₁ to S _o2 has been turned on is sent to the base unit via the ringing signal line C.
It is transmitted to M ₁ and M ₂ . The base units M ₁ and M ₂ detect this information using the call detection circuit 3 and input it to the signal processing means 7 via the input section 5 . Then, the signal processing means 7 first sequentially outputs the main/sub information stored in the RAM 9, and based on this, the operating state is set to either the main/sub. On the main unit _M1 side where the main information is stored,
Based on this main information, the repeater number and slave unit number information stored in the RAM 9 in advance is read out and sent to the input/output unit 14, the input/output interface circuit 12, and the data line E. Transmit to the repeater T ₁ to Tn side. On the side of the repeaters T ₁ to Tn, the information on the above-mentioned repeater number and handset number is received by the data receiving circuit 17 via the input/output interface 16, and the repeater number is received by the repeater number matching detection circuit 1.
8. The handset number is compared by the handset number detection circuit 19 with its own repeater number set in advance and the handset number of the handset whose calling switch is turned on.
When the two match, a matching signal is output from the handset number detection circuit 19, and this signal is transmitted via the transmitting circuit 20 and the input/output interface circuit 16 to the main unit _M1 operating as the main unit. Therefore, on the main unit _M1 side, this coincidence signal is received via the input/output interface circuit 12 input/output section 14,
The signal processing circuit 7 operates as follows. That is,
Upon receiving the coincidence signal, the signal processing circuit 7 first reads from the RAM 9 the information of the repeater number and handset number transmitted to the repeaters T ₁ to Tn side, and based on this, the handset display 10. Outputs a signal for driving the ringing tone generation circuit 11. Therefore, in this state, the handset display 10 and the ringing tone generating circuit 11 operate, the display corresponding to the called handset lights up, and at the same time a ringing tone is emitted. Then, when the signal processing circuit 7 receives the coincidence signal and drives the handset display 10 and the ring tone generation circuit 11 based on the information of the repeater number and the handset number, the signal processing circuit 7
The information on the repeater number and the handset number is sent to the other base unit _M2 , which is set to operate as a sub-base unit, through the input/output unit 14, the input/output interface circuit 13, and the data line D. to be transmitted.

A master unit configured to act as a secondary master unit
On the _M2 side, the information of the repeater number and the handset number transmitted through the data line D is received through the input/output interface circuit 13 and the input/output unit 14, and is used as the main base unit. The handset display 10 and the ring tone generation circuit 11 are respectively operated based on the above information in the same way as the base unit _M1 which is set to operate. Therefore, on the side of the base unit _M2 , which is set to operate as a sub-base unit, the display corresponding to the called slave unit lights up, and at the same time a ringing tone is emitted.

In this way, the information on the repeater number and handset number transmitted from the main unit M ₁ , which is set to operate as the main unit, to each repeater T ₁ to Tn is connected to the calling handset. If the repeater number of the called repeater matches the handset number of the called handset, all the bases M ₁ , M that are set to operate as the main base unit and sub base unit On _{the 2nd} side, the display corresponding to the called handset lights up and a ringing tone is emitted.

Base unit set to operate as the primary base unit
If the repeater number and handset number information from M ₁ do not match the repeater number connected to the calling handset and the handset number of the calling handset, repeaters T ₁ to A mismatch signal is output from the handset number detection circuit 19 in Tn, and this signal is sent to the base machine M1, which is set to operate as the main base machine, via the transmitting circuit 20, the input/output interface circuit 16, and the data line _E. transmitted to the side. Therefore, in this case, based on the above-mentioned mismatch signal, base unit M ₁ immediately
The signal processing means 7 operates to read the next repeater number and the next slave unit number stored in the RAM 9, and starts searching for the next repeater and the next slave unit, respectively, in the same way as described above. I will do it. and,
Regardless of whether the repeater number and handset number information from the base unit M ₁ matches the repeater number and handset number connected to the called handset, the call switch S ₁₁ of one of the handsets While ~S _o2 is turned on, a ringing signal is output from the ringing detection circuit 15 based on the on information of the turned on ringing switch S ₁₁ ~ _{S o2} , so that the signal of the base unit _M1 continues to be output. The processing means 7 reads out the information of the next repeater number and the next slave unit number stored in the RAM, and continues to repeatedly search for the next repeater and the next slave unit, respectively. Therefore, each display 10 of the main units M ₁ and M ₂
Now, the handsets corresponding to all the call switches that have been turned on will be displayed.

In this way, searches are performed one after another, and the display of the handset corresponding to the ring switch that is turned on lights up, and with the ring tone being emitted, the next main unit M ₁ , M ₂
It is assumed that a key corresponding to the illuminated indicator is pressed using one of the key operation units 4 provided in the display. When the key corresponding to the lit display is pressed, the information is applied to the signal selection circuit 1,
The press information of the above-mentioned keys is applied to the signal processing means 7 via the input section 5 in priority to the on/off information of the main/sub setting switch _S0 . Therefore, the signal processing circuit 1 operates as the main base unit based on the above information, regardless of whether or not the base units M ₁ and M ₂ having the above signal processing means are set to operate as the main base unit. It can be switched as follows. Therefore, even if the base unit set as the sub-base unit responds to a call from the slave unit, operating the above keys will cause the base unit to operate as the main base unit, and the calls will be interrupted one by one. Subsequent calls, responses, etc. can be made directly without going through the base unit that was previously set as the main base unit, and these operations are extremely smooth and accurate. At the same time, the signal processing circuit 7 outputs an in-use signal to the in-use signal line B based on this information, thereby informing other base units that the own base unit is in use. Therefore, other base units will be able to switch their own main/sub settings switch based on this in-use signal.
Regardless of the on/off information of _S0 and the key information of the key operation unit 4, it can be switched to operate as a sub-base unit.

Effects of the Invention As is clear from the above embodiments, the present invention is configured to use a plurality of base units that can be in either the main or sub-operation state, and the multiple base units cannot be configured in exactly the same way. It has the advantage that its manufacture and design as a whole are significantly easier. According to the present invention, when a call is received from a slave unit, it is possible to display on all base units at the same time which slave unit received the call, and when the base unit responds, the base unit that responded It has the advantage that the terminal is automatically switched to operate as the main base unit, and therefore the call response between the slave unit and the base unit can be carried out very smoothly and accurately.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of one embodiment of an intercom device according to the present invention, and FIGS. 2 and 3 are more specific schematic block diagrams of a base unit and a slave unit, respectively, constituting the above embodiment. M ₁ , M ₂ ... Base unit, T ₁ ~ Tn ... Repeater, S ₁₁ ~
S _o2 ...Call switch of each handset, 1...Signal selection circuit, 2...In use detection circuit, 3...Call detection circuit, 4...Key operation section, 5...Input section, 6...
ROM, 7...signal processing means, 8...output section, 9
...RAM, 10...Slave device display, 11...Ring tone generation circuit, 12, 13...I/O interface circuit, 14...I/O section, 15...Call detection circuit, 16...I/O Interface circuit, 1
7...Data receiving circuit, 18...Relay number matching detection circuit, 19...Slave unit number detection circuit, 20...
Transmission circuit, B...signal line in use, C...calling signal line, E...data line, D...data line,
G...Earth line.

Claims (1)

[Claims] 1 Having a plurality of identically configured master units that are set in advance to operate as either the master or sub-base units by a switch for master/sub settings, and slave units connected in common to each of these base units, When a call is received from any of the slave units, the first base unit, which has been set in advance to operate as the main base unit by the above switch, searches for the slave unit that received the call, and the result is Based on the above, the first base unit and the second base unit, which has been set in advance to operate as a sub-base unit by the switch, are configured to display the called slave unit on their respective displays. At the same time, by operating a separately provided key operation section, the main unit can be operated as the main unit, giving priority to the above-mentioned switch for main/sub settings, and the other unit can be operated as the sub unit. An intercom device configured in