Information terminal and intercom system

Abstract

To provide an information terminal and the like capable of suppressing the occurrence of malfunctions in disaster prevention-related functions.SOLUTION: An information terminal 1a includes: a first function unit 10 having a first control circuit that controls disaster prevention-related functions; and a second function unit 20 having a second control circuit that controls functions different from the disaster prevention-related functions. The first function unit 10 is configured so as to, when an abnormality occurs in the second function unit 20, allow prevention-related functions to work. The first function unit 10 has a sound output unit 17 that outputs a first sound based on the operation of the first function unit 10 and a second sound based on the operation of the second function unit 20. The first function unit 10 has at least one of a fire detection circuit and a gas detection circuit and generates the first sound based on a signal received by at least one of the fire detection circuit and gas detection circuit. The second function unit 20 has an interphone communication circuit that communicates with an interphone handset and generates the second sound based on a signal received by at least one of the interphone communication circuit or an input circuit.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an information terminal Finally, Also, this document relates to intercom systems. [Background technology]

[0002] Conventionally, information terminals such as intercom master units installed as dwelling terminals in facilities are known. As an example of such information terminals, Patent Document 1 discloses an information terminal equipped with both a disaster prevention function and a call function. In this information terminal, the disaster prevention function and the call function are controlled by a dwelling terminal control unit equipped in the information terminal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-123876 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the information terminal described in Patent Document 1, for example, if there is a problem with the telephone call function, a problem may arise in the disaster prevention related function.

[0005] The present invention aims to provide an information terminal or the like that prevents malfunctions in disaster prevention related functions. [Means for solving the problem]

[0006] An information terminal according to one aspect of the present invention is an information terminal provided in a facility, the information terminal comprising: a first functional unit having a first control circuit that controls a disaster prevention-related function related to disaster prevention of the facility; and a second functional unit having a second control circuit that controls a function different from the disaster prevention-related function, the disaster prevention-related function of the first functional unit is configured to be operable when an abnormality occurs in the second functional unit, the first functional unit has a sound output unit that outputs a first sound based on operation of the first functional unit and a second sound based on operation of the second functional unit, the first functional unit has at least one of a fire detection circuit connected to a fire detector and a gas detection circuit connected to a gas detector, and generates the first sound based on at least one of a signal received by the fire detection circuit and the gas detection circuit, the second functional unit has an intercom communication circuit that communicates with an intercom handset, and the intercom communication circuit is different from Input times On the road and generating the second sound based on the received signal.

[0008] According to one aspect of the present invention The intercom system includes the information terminal and an intercom door unit connected to the information terminal, the intercom door unit being: The device further includes a first communication unit connected to the first functional unit, the first communication unit acquiring at least information relating to the sound from the first functional unit or acquiring information relating to the sound from the second functional unit via the first functional unit.

[0009] An intercom system according to one aspect of the present invention includes the above-mentioned information terminal and an intercom handset that communicates with the information terminal. Effect of the Invention

[0010] Information terminal of the present invention Last According to the intercom system, malfunctions in disaster prevention related functions can be suppressed. [Brief description of the drawings]

[0011] [Figure 1] 1 is a diagram showing an example in which the intercom system according to the first embodiment is installed in a public facility. [Diagram 2] FIG. 1 is a schematic diagram showing an intercom system according to a first embodiment. [Diagram 3] 1 is a configuration diagram showing an information terminal and an intercom handset included in the intercom system according to the first embodiment. [Figure 4] 1 is a front view of an information terminal according to a first embodiment. [Diagram 5] 4 is a configuration diagram showing another example of the information terminal and the intercom handset included in the intercom system according to the first embodiment. FIG. [Figure 6] FIG. 4 is a diagram illustrating an example of the operation of the information terminal according to the first embodiment. [Figure 7] 1 is a configuration diagram showing an information terminal and an intercom handset according to a first modification of the first embodiment. FIG. [Figure 8] 11 is a configuration diagram showing an information terminal and an intercom handset included in the intercom system according to the second embodiment. FIG. [Figure 9] FIG. 11 is a front view of the intercom entrance unit according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiments will be described in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component arrangement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components that are not described in the independent claims showing the highest concept will be described as optional components.

[0013] In addition, each drawing is a schematic diagram and is not necessarily a precise illustration. In each drawing, the same reference numerals are used for substantially the same configurations, and duplicated explanations may be omitted or simplified.

[0014] (Embodiment 1) An intercom system including an information terminal 1a according to the first embodiment will be described below with reference to FIGS. 1 to 7. FIG.

[0015] [1-1. Overall configuration of intercom system] First, the overall configuration of the intercom system according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG.

[0016] Fig. 1 is a schematic diagram showing an intercom system 80 according to the present embodiment. Fig. 2 is a schematic diagram showing the intercom system 80.

[0017] As shown in FIG. 1, the intercom system 80 includes a plurality of information terminals 1a-1c and a plurality of intercom door sub-units 70a-70c. The intercom system 80 is provided in, for example, a collective facility H1. The collective facility H1 is composed of a plurality of facilities H101, H201, H301, such as residences or offices, and a common space such as a door. FIG. 1 also shows a common door sub-unit 60 installed at the door of the collective facility H1, and a control device 50 installed in the collective facility H1. The intercom door sub-units 70a-70c and the common door sub-unit 60 have a common function. Hereinafter, when at least one of the intercom door sub-units 70a-70c and the common door sub-unit 60 is referred to as an "intercom sub-unit" in consideration of this common function, the intercom door sub-units 70a-70c and the common door sub-unit 60 may be referred to as an "intercom sub-unit."

[0018] Each of the information terminals 1a to 1c is an intercom master set installed in the living room or the like of each of the facilities H101 to H301. The information terminals 1a to 1c are connected to the corresponding intercom entrance slaves 70a to 70c, and are also connected to the common entrance slave 60 via the control device 50. As shown in FIG. 2, for example, the information terminal 1a is connected to an external network via a router 85 or the like. A detector 90 such as a fire detector 94 or a gas detector 95 is connected to the information terminal 1a. The information terminal 1a has a disaster prevention-related function related to disaster prevention. Specifically, the information terminal 1a has a function of receiving a disaster prevention-related signal output from the detector 90, and a function of reporting abnormality information based on the disaster prevention-related signal. Each of the information terminals 1a to 1c is, for example, an intercom master set fixed to a wall of a living room or the like, but may be other devices.

[0019] 1, the intercom entrance slave units 70a to 70c are installed at the entrances of the facilities H101 to H301. For example, the intercom entrance slave unit 70a is directly connected to the information terminal 1a and can communicate with the information terminal 1a.

[0020] 1 shows only three sets of information terminals 1a-1c and intercom door units 70a-70c, but intercom system 80 actually includes multiple sets of information terminals and intercom door units according to the number of facilities in collective facility H1. In the following, information terminal 1a will be used as a representative example of the multiple information terminals 1a-1c. Also, intercom door unit 70a will be used as a representative example of the multiple intercom door units 70a-70c.

[0021] [1-2. Information terminal configuration] Next, the information terminal 1a included in the intercom system 80 will be described.

[0022] Fig. 3 is a configuration diagram showing the information terminal 1a and the intercom slave unit. Fig. 4 is a front view of the information terminal 1a. Fig. 5 is a configuration diagram showing another example of the information terminal 1a and the intercom slave unit. Fig. 6 is a diagram showing an example of the operation of the information terminal 1a.

[0023] 3 and 4, the information terminal 1a includes a first functional unit 10 having a disaster prevention-related function related to disaster prevention of the facility H101, and a second functional unit 20 having a function different from the disaster prevention-related function. The information terminal 1a also includes a power supply circuit 30 that supplies power to each of the first functional unit 10 and the second functional unit 20, and a power cutoff unit 35 provided on a power supply line 32 that connects the power supply circuit 30 and the second functional unit 20.

[0024] First, the second function unit 20 will be described. The second function unit 20 includes a second control circuit 21, an input circuit 22, a display circuit 23, a network communication circuit 24, an interphone communication circuit 25, and a sound input unit 26. The input circuit 22, the display circuit 23, the network communication circuit 24, the interphone communication circuit 25, and the sound input unit 26 are each connected to the second control circuit 21. Note that the second function unit 20 is not provided with the abnormality display circuit 13, the fire detection circuit 14, the gas detection circuit 15, and the sound output unit 17, which are circuits related to disaster prevention.

[0025] The network communication circuit 24 is a circuit that transmits and receives various data via an external network. The network communication circuit 24 is connected to a server 89 via a router 85 and the external network. Data received by the network communication circuit 24 is output to the second control circuit 21. In the information terminal 1a, for example, an update program for the second function unit 20 is downloaded using the network communication circuit 24, and the control program of the second function unit 20 is updated.

[0026] The intercom communication circuit 25 is a circuit for communicating with the intercom front door slave 70a or the shared front door slave 60. The intercom communication circuit 25 has a main line communication circuit 25a connected to the shared front door slave 60 via the control device 50, and a slave communication circuit 25b connected to the intercom front door slave 70a. The intercom communication circuit 25 receives signals output from the intercom front door slave 70a, such as a signal indicating that a visitor has arrived and signals related to the visitor's voice and image, and outputs the received signals to the second control circuit 21.

[0027] 5, the interphone communication circuit 25 may be connected to a server 89 via the control device 50, a gateway 86, and an external network. In this case, in the information terminal 1a, an update program for the second function unit 20 is downloaded using the interphone communication circuit 25, and the control program for the second function unit 20 is updated. In this case, the information terminal 1a does not need to include the network communication circuit 24.

[0028] The sound input unit 26 is a circuit to which the voice of the user of the information terminal 1a is input. The sound input unit 26 is, for example, a microphone. A signal related to the sound input by the sound input unit 26 is output to the second control circuit 21.

[0029] The input circuit 22 is a switch circuit that receives an operational input from a user and outputs the received signal to the second control circuit 21. For example, the second control circuit 21, by receiving an operational input from the input circuit 22, allows a signal related to a sound input by the sound input unit 26 to be output to the intercom front door unit 70a via the intercom communication circuit 25. The input circuit 22 may be an anti-theft switch provided on a door or the like.

[0030] The display circuit 23 is a device that displays, as an image, the data and signals received by the second control circuit 21. The display circuit 23 is configured, for example, with a liquid crystal panel. Note that the display circuit 23 may display information about disaster prevention transmitted from the first functional unit 10 to the second control circuit 21.

[0031] The second control circuit 21 is a circuit that controls the operation of functions other than the disaster prevention related functions. The functions other than the disaster prevention related functions are, for example, a function of communicating with the outside via a network, or a function of communicating with the intercom entrance slave unit 70a or the shared entrance slave unit 60. The second control circuit 21 processes and stores data received by the network communication circuit 24 or the intercom communication circuit 25, or displays the received data on the display circuit 23. The second control circuit 21 also outputs a signal related to the sound output from the intercom communication circuit 25 to the switching circuit 16 of the first function unit 10, which will be described later.

[0032] The second control circuit 21 is configured by, for example, a microcomputer, and further includes a memory 21a.

[0033] The memory 21a stores data related to the notification sound. The notification sound is, for example, a chime to notify that a visitor has arrived. The second control circuit 21 outputs the notification sound to the switching circuit 16 when it receives a signal from the interphone communication circuit 25 indicating that a visitor has arrived.

[0034] The memory 21a also stores a control program for operating the second functional unit 20. The control program stored in the memory 21a can be updated based on an update program provided from outside the information terminal 1a. The update program may be provided via a network or via a recording medium such as a memory card.

[0035] The second functional unit 20 is provided with a temperature sensor 28 that detects the temperature of the second functional unit 20. The temperature sensor 28 is, for example, a thermistor, and is disposed, for example, in the vicinity of the second control circuit 21. A signal detected by the temperature sensor 28 is output to the first control circuit 11 of the first functional unit 10.

[0036] Next, the first function unit 10 will be described. The first function unit 10 includes a first control circuit 11, an input circuit 12, an abnormality display circuit 13, a fire detection circuit 14, a gas detection circuit 15, a switching circuit 16, and a sound output unit 17. The input circuit 12, the abnormality display circuit 13, the fire detection circuit 14, the gas detection circuit 15, and the switching circuit 16 are each connected to the first control circuit 11. The sound output unit 17 is also connected to the first control circuit 11 and the second control circuit 21 via the switching circuit 16.

[0037] The fire detection circuit 14 is a circuit connected to a fire sensor 94 (see FIG. 2). The fire detection circuit 14 receives a signal relating to the occurrence of a fire output from the fire sensor 94, and outputs this signal to the first control circuit 11.

[0038] The gas detection circuit 15 is a circuit connected to a gas sensor 95 (see FIG. 2). The gas detection circuit 15 receives a signal relating to a gas leak output from the gas sensor 95, and outputs this signal to the first control circuit 11.

[0039] The input circuit 12 is a circuit that receives an operational input from a user. The input circuit 12 is, for example, an alarm sound stop button switch for stopping the sound of an alarm. The input circuit 12 outputs a signal received by the operational input from the user to the first control circuit 11.

[0040] The abnormality display circuit 13 is a circuit that notifies abnormal information related to fire and gas leak with light. Fig. 4 shows a fire indicator lamp that notifies a fire and a gas leak indicator lamp that notifies a gas leak as an example of the abnormality display circuit 13. When the abnormality display circuit 13 is turned on, the user can know that a fire or a gas leak has occurred in the facility H101.

[0041] The sound output unit 17 is a circuit that outputs a first sound based on the operation of the first function unit 10 and a second sound based on the operation of the second function unit 20. The sound output unit 17 is, for example, a speaker. The first sound is a sound generated based on at least one of the signals received by the fire detection circuit 14 and the gas detection circuit 15, and is, for example, an alarm sound for notifying the user of abnormal information. The second sound is a sound generated based on a signal received by the interphone communication circuit 25 of the second function unit 20, and is, for example, a notification sound for notifying that a visitor has arrived and a call sound emitted by the visitor. The first sound or the second sound is output from the sound output unit 17 so that the time to output the first sound and the time to output the second sound do not overlap.

[0042] The switching circuit 16 is a circuit that selectively switches between a signal s1 output from the first control circuit 11 and a signal s2 output from the second control circuit 21, and outputs the signal to the sound output unit 17. The signal s1 is an acoustic signal that is the source of the first sound, and the signal s2 is an acoustic signal that is the source of the second sound. An input side of the switching circuit 16 is connected to each of the first control circuit 11 and the second control circuit 21, and an output side of the switching circuit 16 is connected to the sound output unit 17. The switching circuit 16 is, for example, configured by a relay circuit.

[0043] The switching circuit 16 outputs the first sound or the second sound from the sound output unit 17 so that the time to output the first sound and the time to output the second sound do not overlap. More specifically, when the switching circuit 16 receives both the signal s1 and the signal s2, the switching circuit 16 outputs the signal s1 to the sound output unit 17 in priority over the signal s2. For example, as shown in FIG. 6, when the switching circuit 16 receives the signal s1 while the second sound is being output from the sound output unit 17 (see FIG. 6(a)), the switching circuit 16 switches the sound output from the sound output unit 17 from the second sound to the first sound (see FIG. 6(b)). Conversely, when the input of the signal s1 is no longer received, the switching circuit 16 switches the sound output from the sound output unit 17 from the first sound to the second sound. In this way, the switching circuit 16 outputs the first sound related to disaster prevention from the sound output unit 17 in priority over the second sound, which is a notification sound and a call sound.

[0044] The first control circuit 11 is a circuit that controls the operation of the disaster prevention related function of the first functional unit 10. The disaster prevention related function is a function of detecting and reporting abnormalities such as fire and gas leakage. Specifically, the first control circuit 11 outputs a signal s1 to the switching circuit 16 based on each signal output from the fire detection circuit 14 or the gas detection circuit 15, and causes the sound output unit 17 to output a first sound. The first control circuit 11 also causes the abnormality display circuit 13 to display abnormality information based on each signal output from the fire detection circuit 14 or the gas detection circuit 15.

[0045] The first control circuit 11 is also connected to the second control circuit 21 so as to be able to communicate with each other. For example, the first control circuit 11 transmits a signal related to a fire occurrence or a gas leak to the second control circuit 21, and the second control circuit 21 transmits an ACK (ACKnowledgement) signal indicating that the signal has been received to the first control circuit 11. In this information terminal 1a, communication from the second control circuit 21 to the first control circuit 11 is restricted compared to communication from the first control circuit 11 to the second control circuit 21 so as not to cause a malfunction in the disaster prevention related function. The communication restriction between the first function unit 10 and the second function unit 20 will be described later.

[0046] The first control circuit 11 is configured by, for example, a microcomputer, and includes a memory 11a and an abnormality determination unit 11b.

[0047] The memory 11a stores a control program for operating the first functional unit 10. The control program stored in the memory 11a is set to be non-updatable, so it will not be affected even if the control program in the memory 21a is updated. The memory 11a also stores an alarm sound for notifying abnormality information. When the first control circuit 11 receives a signal related to a fire or gas leak, it outputs a signal to the switching circuit 16 to sound the alarm sound.

[0048] The abnormality determination unit 11b is a circuit that determines the presence or absence of an abnormality in the second functional unit 20 and the power supply line 32. The abnormality determination unit 11b determines the presence or absence of the abnormality based on the signal output to the first functional unit 10. Below, several examples of determinations made by the abnormality determination unit 11b will be described.

[0049] For example, the abnormality determination unit 11b determines whether or not there is an abnormality in the second functional unit 20 or the power supply line 32 based on a signal output from a current detection circuit (e.g., a resistor) 36 provided on the power supply line 32. Specifically, the abnormality determination unit 11b determines that there is an abnormality in the second functional unit 20 or the power supply line 32 when the current flowing through the power supply line 32 exceeds a specified current value. The specified current value is an allowable current value determined according to the specifications of the second functional unit 20.

[0050] For example, the abnormality determination unit 11b determines whether or not there is an abnormality in the second functional unit 20 based on a signal transmitted from the second functional unit 20 to the first functional unit 10. Specifically, the abnormality determination unit 11b determines that the second functional unit 20 is abnormal when the voltage supplied to the second functional unit 20 is less than a specified voltage value. The voltage supplied to the second functional unit 20 is detected, for example, by connecting the power supply line 32 to a voltage value detection port of the second control circuit 21.

[0051] For example, the abnormality determination unit 11b determines whether or not there is an abnormality in the second functional unit 20 based on a signal output from a temperature sensor 28 provided in the second functional unit 20. Specifically, the abnormality determination unit 11b determines that the second functional unit 20 is abnormal when the temperature detected by the temperature sensor 28 exceeds a specified temperature. The specified temperature is an allowable temperature determined according to the specifications of the second control circuit 21, and is appropriately selected from the range of 70°C or higher and 90°C or lower, for example.

[0052] For example, the abnormality determination unit 11b determines whether or not there is an abnormality in the second functional unit 20 based on the presence or absence of a signal returned from the second control circuit 21. Specifically, if an ACK (ACKnowledgement) signal is not returned from the second control circuit 21 within a certain period of time after the first control circuit 11 transmits a signal to the second control circuit 21, and the first functional unit 10 and the second functional unit 20 are unable to communicate with each other, the abnormality determination unit 11b determines that the second functional unit 20 is abnormal. In this manner, the abnormality determination unit 11b may determine that the second functional unit 20 is abnormal when the first functional unit 10 and the second functional unit 20 are unable to communicate with each other.

[0053] The first control circuit 11 cuts off the power supply to the second function unit 20 using the power cutoff unit 35 when the abnormality determination unit 11b determines that the second function unit 20 or the power supply line 32 is abnormal.

[0054] Next, the power supply circuit 30 and the power cutoff unit 35 that supply power to the first functional unit 10 and the second functional unit 20 will be described.

[0055] 3, the power supply circuit 30 supplies power to the first functional unit 10 via a power supply line 31 connecting the power supply circuit 30 and the first functional unit 10. The power supply circuit 30 also supplies power to the second functional unit 20 via a power supply line 32 and a power cutoff unit 35.

[0056] The power supply cutoff unit 35 is provided on the second functional unit 20 side of the power supply circuit 30, on a power supply line 32 connecting the power supply circuit 30 and the second functional unit 20. The power supply cutoff unit 35 is, for example, a surface mount fuse or a surface mount relay (for example, a contactless relay).

[0057] If the power cutoff unit 35 is a fuse, the fuse wire will break and the power supply will be cut off when an overcurrent flows through the power supply line 32. In other words, the power cutoff unit 35 is configured to cut off without being controlled by the first control circuit 11. With this configuration, the first function unit 10 can perform the disaster prevention related function without being affected by the second function unit 20 even if an overcurrent flows through the second function unit 20.

[0058] When the power cutoff unit 35 is a relay, the power cutoff unit 35 cuts off the power supply to the second functional unit 20 based on a cutoff instruction signal transmitted from the first functional unit 10. Specifically, when the abnormality determination unit 11b determines that there is an abnormality in the second functional unit 20 or the power supply line 32, it outputs a cutoff instruction signal to the power cutoff unit 35 to cut off the power supply. With this configuration, the first functional unit 10 can perform the disaster prevention related function without being affected by the second functional unit 20 even if an abnormality occurs in the second functional unit 20.

[0059] Next, restrictions on communication between the first functional unit 10 and the second functional unit 20 will be described.

[0060] In this information terminal 1a, the first functional unit 10 and the second functional unit 20 are connected so that they can communicate with each other, but communication from the second functional unit 20 to the first functional unit 10 is restricted compared to communication from the first functional unit 10 to the second functional unit 20.

[0061] For example, the amount of information of the signal transmitted from the second control circuit 21 to the first control circuit 11 is set to be smaller than the amount of information of the signal transmitted from the first functional unit 10 to the second functional unit 20. Specifically, as described above, the first control circuit 11 transmits a signal related to a fire outbreak or gas leak to the second control circuit 21, and the second control circuit 21 is configured to return only an ACK signal to the first control circuit 11.

[0062] Furthermore, in the information terminal 1a, when the first control circuit 11 receives abnormality information related to a fire or gas leak, communication from the second functional unit 20 to the first functional unit 10 is cut off. For example, when the first control circuit 11 receives abnormality information, the first functional unit 10 issues a command to the second control circuit 21 to prohibit the second functional unit 20 from transmitting a signal to the first functional unit 10. Alternatively, when the first control circuit 11 receives abnormality information, the first functional unit 10 does not accept and ignores the signal transmitted from the second functional unit 20, or blocks the signal transmitted from the second functional unit 20. This blocks communication from the second functional unit 20 to the first functional unit 10. is blocked.

[0063] In this way, the information terminal 1a is configured to restrict communication from the second functional unit 20 to the first functional unit 10 compared to communication from the first functional unit 10 to the second functional unit 20, thereby activating the disaster prevention-related functions of the first functional unit 10 regardless of whether the second functional unit 20 is normal or abnormal.

[0064] [1-3. Effects, etc.] As described above, the information terminal 1a according to the present embodiment is an information terminal provided in the facility H101, and includes a first functional unit 10 having a disaster prevention related function related to disaster prevention in the facility H101, and a second functional unit 20 having a function different from the disaster prevention related function. The first functional unit 10 has a sound output unit 17 that outputs a first sound based on the operation of the first functional unit 10 and a second sound based on the operation of the second functional unit 20.

[0065] According to this, even if a malfunction occurs in the second functional unit 20, for example, the first sound related to disaster prevention can be output from the sound output unit 17 of the first functional unit 10. This makes it possible to prevent malfunctions in disaster prevention-related functions.

[0066] Furthermore, the first sound and the second sound may be output from the sound output unit 17 such that the times at which the first sound and the second sound are output do not overlap.

[0067] This makes it possible to prevent the first sound related to disaster prevention from becoming difficult to hear, thereby making it possible to prevent malfunctions in the disaster prevention related functions.

[0068] Furthermore, the first functional unit 10 may switch the sound output from the sound output unit 17 from the second sound to the first sound, or from the first sound to the second sound.

[0069] According to this, it is possible to switch between the first sound and the second sound and output them. For example, the first functional unit 10 can suppress the first sound related to disaster prevention from becoming difficult to hear by switching the sound output from the sound output unit 17 from the second sound to the first sound. This can suppress malfunctions in the disaster prevention related functions.

[0070] Furthermore, the first functional unit 10 may cause the sound output unit 17 to output the first sound in preference to the second sound.

[0071] In this way, by giving priority to outputting the first sound over the second sound, it is possible to prevent the first sound related to disaster prevention from becoming difficult to hear.

[0072] In addition, the first functional unit 10 has at least one of a fire detection circuit 14 connected to a fire detector 94 and a gas detection circuit 15 connected to a gas detector 95, and the second functional unit 20 may have an intercom communication circuit 25 that communicates with an intercom handset.

[0073] As a result, even if a malfunction occurs in the second functional unit 20 connected to the intercom handset, the first sound related to disaster prevention can be output from the first functional unit 10. As a result, malfunctions in disaster prevention-related functions can be suppressed.

[0074] In addition, the first functional unit 10 may generate a first sound based on at least one of the signals received by the fire detection circuit 14 and the gas detection circuit 15, and the second functional unit 20 may generate a second sound based on a signal received by the intercom communication circuit 25.

[0075] This makes it possible to prevent the first sound related to disaster prevention, such as a fire or gas leak, from being difficult to hear due to the second sound based on the signal received by the interphone communication circuit 25. This makes it possible to prevent malfunctions in disaster prevention functions.

[0076] The second functional unit 20 may have a control program for implementing a function other than the disaster prevention related function, and may update the control program based on an update program provided from outside the information terminal 1a.

[0077] For example, in a conventional information terminal, in order to ensure the security of the information terminal, the control program is updated via a network. However, if there is a bug in the update program for updating the control program, the information terminal may malfunction. In that case, the disaster prevention related function of the information terminal does not work properly, and a problem occurs in that abnormal information detected by the detector cannot be reported. In contrast, in the information terminal 1a of this embodiment, even if a malfunction occurs in the second function unit 20 while the control program is being updated in the second function unit 20, it is possible to suppress the malfunction from occurring in the first function unit 10 having the disaster prevention related function.

[0078] An intercom system 80 according to the present embodiment includes the above-mentioned information terminal 1a, and an intercom slave unit (at least one of intercom entrance slave units 70a to 70c and shared entrance slave unit 60) that communicates with information terminal 1a.

[0079] In this intercom system 80, the first sound based on the operation of the first functional unit 10 and the second sound based on the operation of the second functional unit 20 are output in the information terminal 1a without overlapping, so that it is possible to prevent the first sound related to disaster prevention from becoming difficult to hear. This makes it possible to prevent malfunctions in disaster prevention related functions.

[0080] [1-4. Variation 1 of the First Embodiment] Next, an information terminal 1aA according to the first modification of the first embodiment will be described.

[0081] Fig. 7 is a configuration diagram showing an information terminal 1aA and an intercom front door slave unit 70a according to the first modification. As shown in Fig. 7, the communication between the first control circuit 11 and the second control circuit 21 in the information terminal 1aA is not two-way communication, but one-way communication from the first control circuit 11 to the second control circuit 21. Specifically, the first control circuit 11 is set to be able to transmit a signal to the second control circuit 21, but the second control circuit 21 is set to be unable to transmit a signal to the first control circuit 11. This setting is determined, for example, by a control program stored in the memory 11a.

[0082] That is, in the information terminal 1aA of the first modification, the first function unit 10 has a first control circuit 11 that controls the operation of a disaster prevention related function, and the second function unit 20 has a second control circuit 21 that controls the operation of a function different from the disaster prevention related function. The first control circuit 11 and the second control circuit 21 are connected to each other, but the communication between the first control circuit 11 and the second control circuit 21 is unidirectional communication from the first control circuit 11 to the second control circuit 21.

[0083] In this way, by restricting communication from the second functional unit 20 to the first functional unit 10 compared to communication from the first functional unit 10 to the second functional unit 20, the information terminal 1aA can prevent malfunctions in the disaster prevention-related functions of the first functional unit 10 even if a malfunction occurs in the second functional unit 20.

[0084] (Embodiment 2) Next, a description will be given of an intercom system 80A according to embodiment 2. In embodiment 2, a description will be given of a mode in which an intercom front door unit 70a is used to test whether or not a disaster prevention related function of the intercom system 80A operates normally.

[0085] Fig. 8 is a configuration diagram showing an information terminal 1a and an intercom slave unit included in an intercom system 80A according to embodiment 2. Fig. 9 is a front view of an intercom entrance slave unit 70a.

[0086] An intercom system 80A of the second embodiment includes an information terminal 1a and an intercom door unit 70a that communicates with the information terminal 1a. The information terminal 1a of the second embodiment has the same configuration as the information terminal 1a of the first embodiment. Here, the description of the information terminal 1a is omitted, and only the intercom door unit 70a will be described.

[0087] 8 and 9, intercom entrance unit 70a includes first communication unit 71a, second communication unit 71b, call button 72, microphone 76, speaker 77, camera 78, and test input receiving unit 79. Intercom entrance unit 70a also includes a control circuit (not shown) that controls the operation of call button 72, microphone 76, speaker 77, and camera 78.

[0088] The call button 72, microphone 76, speaker 77, and camera 78 are devices for allowing the user and the visitor to communicate with each other. Signals received by the call button 72, microphone 76, and camera 78 are output to the information terminal 1a via the first communication unit 71a, and are then output to the second control circuit 21 via the intercom communication circuit 25 of the information terminal 1a. Meanwhile, a signal received by the sound input unit 26 of the information terminal 1a is output from the second control circuit 21 via the switching circuit 16 to the intercom entrance unit 70a, and are then output to the speaker 77 via the first communication unit 71a of the intercom entrance unit 70a.

[0089] Each of the first communication unit 71a and the second communication unit 71b is a communication circuit used for testing disaster prevention related functions of the information terminal 1a.

[0090] The first communication unit 71a is connected to the switching circuit 16 of the first functional unit 10. The first communication unit 71a acquires from the switching circuit 16 a signal s1 related to a first sound (alarm sound) output from the first control circuit 11. Alternatively, the first communication unit 71a acquires from the switching circuit 16 a signal s2 related to a second sound (notification sound, etc.) output from the second control circuit 21.

[0091] The second communication unit 71b is connected to the first control circuit 11 of the first functional unit 10. When the second communication unit 71b receives a signal to start a test at the test input receiving unit 79, the second communication unit 71b transmits a test signal for testing the disaster prevention related function of the first functional unit 10 to the first control circuit 11. The test signal is a signal for informing the first control circuit 11 that a test is being performed.

[0092] In this intercom system 80A, first, the intercom door unit 70a outputs a test signal to the first control circuit 11 via the second communication unit 71b. The first control circuit 11, which receives the test signal, outputs a signal s1 related to a first sound to the switching circuit 16. The tester determines whether the disaster prevention related function of the first function unit 10 is working normally based on whether the first sound is sounded from the intercom door unit 70a. For example, when the intercom door unit 70a receives the signal s1 related to the first sound, it determines that there is no abnormality in the disaster prevention related function, and when it does not receive the signal s1, it determines that there is an abnormality in the disaster prevention related function.

[0093] In the above intercom system 80A, an example has been shown in which the intercom entrance sub-unit 70a is used as a tester to test the information terminal 1a, but this is not limited to this. The above test may also be performed by connecting a dedicated tester to the intercom entrance sub-unit 70a and using this dedicated tester to control the intercom entrance sub-unit 70a.

[0094] The intercom entrance slave unit 70a of the second embodiment is an intercom entrance slave unit 70a connected to the information terminal 1a of the first embodiment, and includes a first communication unit 71a that communicates with the first functional unit 10. The first communication unit 71a acquires at least a signal related to sound from the first functional unit 10 or acquires it from the second functional unit 20 via the first functional unit 10.

[0095] In this way, by the first communication unit 71a acquiring a signal related to the sound of the first functional unit 10 or the second functional unit 20, it is possible to test whether or not there is a malfunction in the disaster prevention-related function of the first functional unit 10 even when there is an abnormality in the second functional unit 20.

[0096] Moreover, the intercom entrance slave unit 70a further includes a second communication unit 71b that communicates with the first functional unit 10. The second communication unit 71b transmits to the first functional unit 10 a test signal for testing the disaster prevention related function.

[0097] In this way, the second communication unit 71b transmits a test signal to the first functional unit 10, so that a signal related to the sound of the first functional unit 10 can be acquired even when an abnormality occurs in the second functional unit 20. This makes it possible to test whether or not a malfunction has occurred in the disaster prevention related function of the first functional unit 10.

[0098] (Other embodiments) Although the embodiment has been described above, the present invention is not limited to the above embodiment.

[0099] For example, the first functional unit 10 and the second functional unit 20 may be provided in one housing of the information terminal 1a. Note that the sound input unit 26 and the sound output unit 17 are not limited to being provided in the housing, and may be provided outside the housing.

[0100] For example, the switching process of the sound output to the sound output unit 17 may be executed by a control program of the first control circuit 11, instead of the switching circuit 16. In that case, the signal s2 relating to the second sound output from the second control circuit 21 is output to the first control circuit 11, and the signals relating to the first sound and the second sound output from the first control circuit 11 are output directly to the sound output unit 17.

[0101] For example, if a fire or gas leak occurs while the control program is being updated by the second functional unit 20, the first functional unit 10 may stop updating the control program of the second functional unit 20. At that time, the first functional unit 10 may instruct the second functional unit 20 to stop the image display during the program update displayed on the display circuit 23 and to display information about the fire or gas leak.

[0102] For example, if a fire or gas leak occurs while the control program is being updated in the second functional unit 20, the first functional unit 10 will notify the user of abnormal information related to the fire or gas leak, but the update of the control program in the second functional unit 20 may continue.

[0103] For example, in the above embodiment, the intercom system is a system for the collective facility H1, but it may be a system for a detached house.

[0104] In addition, the communication method between the devices in the above embodiment is not particularly limited. The devices may communicate wirelessly or may communicate via wired communication. The devices may communicate via wireless and wired communication in combination.

[0105] The order of the processes described in the above embodiment is merely an example. The order of the processes may be changed, or the processes may be executed in parallel.

[0106] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0107] 1a, 1b, 1c, 1aA Information terminal 10 First Functional Section 11 First control circuit 11b Abnormality judgment section 14 Fire detection circuit 15 Gas detection circuit 17 Sound output section 20 Second Functional Department 21 Second control circuit 24 Network communication circuits 25 Interphone communication circuit 26 Sound input section 28 Temperature Sensor 30 Power circuit 31, 32 Power supply line 35 Power cutoff section 70a, 70b, 70c Intercom Entrance Unit 71a 1st Communication Department 71b 2nd Communication Department 80, 80A Intercom System 94 Fire detector 95 Gas detector H101, H201, H301 Facilities

Claims

1. An information terminal provided in a facility, A first function unit having a first control circuit that controls a disaster prevention related function related to disaster prevention of the facility; a second function unit having a second control circuit that controls a function different from the disaster prevention related function; Equipped with When an abnormality occurs in the second functional unit, the disaster prevention-related function of the first functional unit is configured to be operable, the first functional unit has a sound output unit that outputs a first sound based on an operation of the first functional unit and a second sound based on an operation of the second functional unit; the first functional unit has at least one of a fire detection circuit connected to a fire detector and a gas detection circuit connected to a gas detector, and generates the first sound based on at least one of a signal received by the fire detection circuit and the gas detection circuit; The second function unit has an intercom communication circuit that communicates with an intercom handset, and generates the second sound based on a signal received by an input circuit different from the intercom communication circuit. Information terminal.

2. The first functional unit and the second functional unit are communicatively connected, The communication from the second functional unit to the first functional unit is restricted as compared with the communication from the first functional unit to the second functional unit.

2. An information terminal according to claim 1.

3. An information terminal according to claim 1 or 2, An intercom door unit connected to the information terminal; An intercom system comprising: The intercom door unit is a first communication unit connected to the first function unit; The first communication unit acquires at least information related to the sound from the first functional unit or from the second functional unit via the first functional unit. Intercom system.

4. The intercom entrance unit further includes a second communication unit connected to the first function unit, The second communication unit transmits a test signal for testing the disaster prevention related function to the first function unit.

4. The intercom system according to claim 3.

5. An information terminal according to claim 1 or 2, and an intercom slave unit for communicating with said information terminal. An intercom system comprising:

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