Integration system

Abstract

To provide an integration system which ensures that an insulating characteristic of a housing of a receiver function unit is not impaired through integration with an emergency broadcasting function unit.SOLUTION: An integration system 100 comprises a housing 10 made of metal, a receiver function unit 1, a switch 21, and an emergency broadcasting function unit 2. The receiver function unit 1 has a function of a receiver to receive a sensing signal from a sensor 4. The sensor 4 is provided within a facility and senses an abnormality occurring within the facility. The switch 21 is installed on a path 20 that electrically connects the receiver function unit 1 and the housing 10, and opens the path 20 in response to switching from an on state to an off state, and closes the path 20 in response to switching from the off state to the on state. The emergency broadcasting function unit 2 has a function of an emergency broadcasting facility to carry out emergency broadcasting. The emergency broadcasting function unit 2 is electrically connected between the receiver function unit 1 and the switch 21 on the path 20.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an integrated system, and more particularly to an integrated system that integrates the functions of a receiver and an emergency broadcast system. [Background technology]

[0002] Patent Document 1 describes a disaster prevention facility in which a fire receiver provided in a fire alarm facility and an emergency broadcast device provided in an emergency broadcast facility are connected by a transmission line, etc. In this disaster prevention facility, when the fire receiver receives an alarm signal from a fire detector and outputs a fire alarm, it transmits an alarm area identification signal to the emergency broadcast device to make a detector alarm broadcast, and when it detects a fire after receiving the alarm signal, it transmits a fire confirmation signal to the emergency broadcast device to make a fire broadcast. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-230654 A Summary of the Invention [Problem to be solved by the invention]

[0004] In an integrated system, it is necessary to reduce static electricity in the receiver function unit, which has the functions of a receiver, and the emergency broadcast function unit, which has the functions of emergency broadcast equipment, while improving their insulation, and in particular to ensure that the insulation of the receiver function unit is not impaired by its integration with the emergency broadcast function unit.

[0005] However, in the disaster prevention equipment described in Patent Document 1, it was not easy to reduce the static electricity in the fire receiver and emergency broadcast device while improving their insulation, and there was a possibility that the insulation of the fire receiver would be impaired by connecting the emergency broadcast device.

[0006] An object of the present disclosure is to provide an integrated system that can reduce charging of the receiver function section and the emergency broadcast function section while improving insulation. [Means for solving the problem]

[0007] An integrated system according to an aspect of the present disclosure includes a housing, a receiver function unit, a switch, and an emergency broadcast function unit. The housing is made of metal. The receiver function unit receives a detection signal from a sensor. The sensor detects an abnormality occurring within the facility. The switch is provided on a path electrically connecting the receiver function unit and the housing, and opens the path in response to switching from an on state to an off state, and closes the path in response to switching from the off state to the on state. The emergency broadcast function unit makes an emergency broadcast. The emergency broadcast function unit is electrically connected to the path between the receiver function unit and the switch, or is electrically connected to the receiver function unit.

[0008] An integrated system according to an embodiment of the present disclosure includes a housing, a receiver function unit, a first switch, an emergency broadcast function unit, and a second switch. The housing is made of metal. The receiver function unit receives a detection signal from a sensor. The sensor is provided in a facility and detects an abnormality occurring in the facility. The first switch is provided on a first path electrically connecting the receiver function unit and the housing, and opens the first path in response to switching from an on state to an off state, and closes the first path in response to switching from the off state to the on state. The emergency broadcast function unit makes an emergency broadcast. The emergency broadcast function unit is electrically insulated from the receiver function unit. The second switch is provided on a second path electrically connecting the emergency broadcast function unit and the housing, and opens the second path in response to switching from the on state to the off state, and closes the second path in response to switching from the off state to the on state. Effect of the Invention

[0009] The integrated system of the present disclosure has the advantage of being able to reduce charging of the receiver function section and the emergency broadcast function section while improving insulation. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram of an integrated system according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is an integrated system block diagram according to a first modified example of the above embodiment. [Diagram 3] FIG. 3 is a block diagram of an integrated system according to a second modification of the above embodiment. [Figure 4] FIG. 4 is a block diagram of an integrated system according to a third modified example of the above embodiment. [Diagram 5] FIG. 5 is a block diagram of an integrated system according to a second embodiment of the present disclosure. [Figure 6] FIG. 6 is a block diagram of an integrated system according to a modified example of the above embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (1) First embodiment In the first embodiment, an integrated system 100 capable of integrating two functions, a receiver and an emergency broadcast facility, will be described. Also, an integrated system 100 capable of improving insulation against a housing 10 while reducing static buildup in a receiver function unit 1 having the function of a receiver and an emergency broadcast function unit 2 having the function of an emergency broadcast facility will be described. Furthermore, an integrated system 100 capable of reducing the loss of insulation of the receiver function unit 1 due to integration with the emergency broadcast function unit 2 will be described.

[0012] (1-1) Overview of the First Embodiment First, an overview of the first embodiment of the present disclosure will be described with reference to FIG.

[0013] 1, an integrated system 100 according to a first embodiment of the present disclosure includes a housing 10, a receiver function unit 1, a path 20, a switch 21, and an emergency broadcast function unit 2. The path 20 may be excluded from the components of the integrated system 100. The housing 10 is made of metal, and houses all or part of the receiver function unit 1, the path 20, the switch 21, and the emergency broadcast function unit 2.

[0014] The receiver function unit 1 has a function of a receiver that receives a detection signal from a detector 4. The detector 4 shown in Fig. 1 may be one of a plurality of detectors installed in a facility.

[0015] The detection signal is, for example, a fire signal indicating the occurrence of a fire, or a gas leak signal indicating the occurrence of a gas leak, etc. The detection signal may include, for example, type information indicating the type of abnormality that has occurred, and location information indicating the location where the abnormality has occurred.

[0016] The detector 4 is installed in a facility and detects an abnormality occurring in the facility. The facility may be, for example, a structure such as a building or a house, each of multiple floors in a structure, or equipment such as electrical equipment or gas equipment associated with a structure. An abnormality may be, for example, a fire or a gas leak.

[0017] The path 20 electrically connects the receiver function unit 1 and the housing 10. The switch 21 is provided on the path 20, and opens the path 20 in response to switching from an on state to an off state, and closes the path 20 in response to switching from an off state to an on state. In other words, the presence of the switch 21, which can be turned on and off, in the path 20 switches the state of the path 20 between an open state and a closed state.

[0018] The emergency broadcast function unit 2 has a function of an emergency broadcasting system that broadcasts emergency information. The emergency broadcast in this embodiment is a broadcast related to the occurrence of an abnormality such as a fire within the facility. However, the emergency broadcast may be a broadcast related to the occurrence of an abnormality outside the facility (e.g., a fire in a neighborhood), a broadcast related to the occurrence of an abnormality in an area including the facility (e.g., a natural disaster), or a broadcast of information related to an event other than the occurrence of an abnormality (e.g., training), and the content of the emergency broadcast is not important. The emergency broadcast is made via a speaker 5 (described later) installed within the facility. The emergency broadcast function unit 2 is electrically connected to the path 20 between the receiver function unit 1 and the switch 21.

[0019] (1-2) Advantages of the First Embodiment As described above, the integrated system 100 of the first embodiment can realize the integration of two functions, that of a receiver and an emergency broadcast facility, by including the receiver function unit 1 and the emergency broadcast function unit 2. In other words, when an abnormality occurs within the facility, the receiver function unit 1 receives a detection signal from the detector 4, and the emergency broadcast function unit 2 can make an emergency broadcast related to the occurrence of the abnormality.

[0020] In addition, the integrated system 100 of the first embodiment is equipped with a path 20 that electrically connects the receiver function unit 1 and the housing 10, and a switch 21 provided on the path 20, thereby making it possible to reduce static electricity in the receiver function unit 1 while improving the insulation of the receiver function unit 1 with respect to the housing 10.

[0021] Furthermore, in the first embodiment, the emergency broadcast function unit 2 is electrically connected between the receiver function unit 1 and the switch 21 of the path 20 (see Figure 1), thereby making it possible to reduce static electricity and improve insulation against the housing 10 not only for the receiver function unit 1 but also for the emergency broadcast function unit 2, and to reduce the loss of insulation of the receiver function unit 1 against the housing 10 due to integration with the emergency broadcast function unit 2.

[0022] (1-3) Details of the First Embodiment Next, the details of the first embodiment will be described with reference to Fig. 1. Note that in the following, the description of the previously mentioned items will be omitted or simplified.

[0023] (1-3-1) Integrated System In the first embodiment, the facility is, for example, one floor in an office building, and the integrated system 100 is installed outside the facility, for example, in a management office on a floor in the office building different from the floor on which the detector 4 is installed. However, the type of facility and the location of the integrated system 100 are not important.

[0024] More specifically, as shown in FIG. 1, the integrated system 100 includes a receiver power supply 11, an emergency broadcast power supply 12, a receiver function unit 1, an emergency broadcast function unit 2, a housing 10, a path 20, and a switch 21.

[0025] 1, the integrated system 100 includes, for example, input devices such as a microphone, a touch panel, and operation buttons, and output devices such as an emergency bell and a liquid crystal display. The input device and the output device are, for example, communicatively connected to the processor of the receiver function unit 1, and attached to the outer surface of the housing 10. However, the input device and the output device are not essential.

[0026] (1-3-1a) Receiver power supply and emergency broadcast power supply A commercial power supply 200 is electrically connected to the primary side of each of the receiver power supply 11 and the emergency broadcast power supply 12 via a breaker 300. The receiver power supply 11 and the emergency broadcast power supply 12 convert AC power supplied from the commercial power supply 200 via the breaker 300 into a first DC power for the receiver function unit 1 and a second DC power for the emergency broadcast function unit 2, respectively.

[0027] In the first embodiment, as shown in Fig. 1, the primary side of the receiver power supply 11 and the primary side of the emergency broadcast power supply 12 are connected to one of a plurality of switches included in the breaker 300. Therefore, by turning off one switch, the power supply from the commercial power supply 200 to both the receiver power supply 11 and the emergency broadcast power supply 12 is cut off. However, the receiver power supply 11 and the emergency broadcast power supply 12 may each be connected to a dedicated switch rather than a common switch. Alternatively, the receiver function unit 1 and the emergency broadcast function unit 2 may each have a dedicated breaker.

[0028] (1-3-1b) Receiver function section The receiver function unit 1 is electrically connected to the secondary side of a receiver power supply 11 and a sensor 4. The receiver function unit 1 receives a first DC power from the receiver power supply 11 and functions as a receiver that receives a detection signal from the sensor 4.

[0029] In detail, the receiver function unit 1 has a communication module, a processor and a memory, and in the receiver function unit 1, the processor operates based on the programs and information stored in the memory and cooperates with the communication module to function as a receiver that receives a detection signal.

[0030] Specifically, the receiver function unit 1 receives a detection signal from the detector 4 via the communication module, and transmits the received detection signal to the emergency broadcast function unit 2 via the communication module.

[0031] The receiver function unit 1 may further include, for example, an emergency bell, and notify the occurrence of an abnormality by ringing the emergency bell when it receives a detection signal from the detector 4. The receiver function unit 1 may further include, for example, a liquid crystal display, and may notify the occurrence of an abnormality such as the type of abnormality that has occurred and the location where the abnormality has occurred by displaying type information and location information contained in the detection signal from the detector 4 on the liquid crystal display.

[0032] (1-3-1c) Emergency broadcast function section The secondary side of the emergency broadcast power supply 12 and a speaker 5 installed in the facility are electrically connected to the emergency broadcast function unit 2. The speaker 5 may be one of a plurality of speakers installed in the facility. The emergency broadcast function unit 2 receives a supply of second DC power from the emergency broadcast power supply 12 and functions as an emergency broadcast facility that broadcasts an emergency message via the speaker 5.

[0033] In detail, the emergency broadcast function unit 2 has a communication module, a processor, and a memory, and in the emergency broadcast function unit 2, the processor operates based on the program and information stored in the memory and further cooperates with the communication module to function as an emergency broadcasting facility that broadcasts emergency information related to the occurrence of an abnormality. In addition to information reporting the occurrence of an abnormality, the emergency broadcast also broadcasts information regarding, for example, the type of abnormality that has occurred, the location of the abnormality, and evacuation methods.

[0034] Specifically, the emergency broadcast function unit 2 transmits the emergency broadcast audio signal stored in the memory to the speaker 5 installed in the facility via the communication module. The destination of the audio signal is not limited to the speaker 5, and may be, for example, a mobile terminal of a user who uses the facility. The emergency broadcast function unit 2 may further include, for example, a microphone, and transmit an audio signal of a human voice via the microphone instead of or in addition to the audio signal stored in the memory.

[0035] The emergency broadcast function unit 2 is electrically connected to a path 20, which will be described later, between the receiver function unit 1 and a switch 21. Being electrically connected to the path 20 also includes the case where the emergency broadcast function unit 2 is provided on the path 20, that is, the case where the emergency broadcast function unit 2 is a part of the path 20.

[0036] (1-3-1d) Cabinet The housing 10 houses a receiver power supply 11, an emergency broadcast power supply 12, a receiver function unit 1, an emergency broadcast function unit 2, a path 20, and a switch 21. However, some of the receiver power supply 11, the emergency broadcast power supply 12, the receiver function unit 1, the emergency broadcast function unit 2, the path 20, and the switch 21 may be provided outside the housing 10. The electric potential of the housing 10 is the ground potential.

[0037] (1-3-1e) Route 1, the path 20 is an electric path that electrically connects the receiver function unit 1 and the housing 10. The path 20 includes, for example, a conductor. The switch 21 is provided on the path 20. Note that being provided on the path 20 means that the switch 21 is interposed in the path 20 and becomes part of the path 20 in the on state.

[0038] Specifically, for example, a path 20 in a closed state is constituted by a first conductor having one end connected to the receiver function unit 1, a second conductor having one end connected to the housing 10, and a switch 21 in an on state having one terminal connected to the other end of the first conductor and the other terminal connected to the other end of the second conductor. When the electric circuit 20 is in a closed state, the receiver function unit 1 is electrically connected to the housing 10 at the ground potential, and as a result, charging is reduced. When the switch 21 is switched from the on state to the off state, the path 20 is in an open state. When the electric circuit 20 is in an open state, the receiver function unit 1 is electrically insulated from the housing 10, and as a result, an insulation test is possible.

[0039] (1-3-1f) Switch The switch 21 is provided on the path 20. The switch 21 in the first embodiment is switched manually. The switch 21 may be operated directly or indirectly (for example, via a remote control). For example, the switch 21 is in an on state when the integrated system 100 is shipped, is switched from the on state to the off state when an insulation test is performed, and is switched from the off state to the on state after the insulation test is performed.

[0040] (1-3-1g) Insulation test The insulation test in the first embodiment is a test performed by applying a voltage to a functional unit such as the receiver functional unit 1 while the functional unit is insulated from the housing 10, and includes at least one of a dielectric strength test and an insulation resistance test. The dielectric strength test is a test in which a predetermined high voltage is applied to the functional unit to check whether the functional unit is broken down. The dielectric strength test is a test in which a constant voltage is applied to the functional unit and the insulation resistance is calculated by measuring the leakage current.

[0041] When the voltage resistance test is performed, the breaker 300 is also turned off. In the first embodiment, since the receiver power supply 11 and the emergency broadcast power supply 12 are connected to one switch in the breaker 300, it is only necessary to turn off the one switch.

[0042] (1-3-1h) Sensor The detector 4 is installed within the facility, detects abnormalities occurring within the facility, and transmits a detection signal regarding the detection result to the integrated system 100.

[0043] (1-3-1i) Sensor The speaker 5 is installed, for example, in a facility, for example, on a floor on which the detector 4 is installed, and outputs an emergency broadcast sound related to the result of the detection of an abnormality by the detector 4.

[0044] (1-3-2) Insulation condition of the receiver and emergency broadcast unit housings In the integrated system 100 of the first embodiment, the receiver function unit 1 and the emergency broadcast function unit 2 are electrically insulated from the housing 10, except for the path 20, as shown in Fig. 1. Note that the path 20 here refers to the path 20 when the switch 21 is in the on state, that is, the path 20 in the closed state.

[0045] In this manner, the path 20 in the first embodiment is the only electrical path electrically connecting the receiver function unit 1 and the emergency broadcast function unit 2 to the housing 10. Therefore, by switching the switch 21 provided on the path 20 from an on state to an off state, the path 20 opens, and the receiver function unit 1 and the emergency broadcast function unit 2 become electrically insulated from the housing 10.

[0046] Since the receiver function unit 1 and the emergency broadcast function unit 2 are insulated from the housing 10, an operator can properly perform an insulation test on at least one of the receiver function unit 1 and the emergency broadcast function unit 2, in particular a dielectric strength test on the receiver function unit 1 as required by law, etc.

[0047] (1-3-3) Connection status between the receiver function unit and the emergency broadcast function unit The receiver function unit 1 and the emergency broadcast function unit 2 are electrically connected to each other and communicably connected to each other via a part of the path 20. The part of the path 20 here refers to the part of the path 20 between the receiver function unit 1 and the emergency broadcast function unit 2. Even when the switch 21 is turned off, the electrical connection of this part, that is, the part of the path 20 between the receiver function unit 1 and the emergency broadcast function unit 2, is maintained.

[0048] The emergency broadcast function unit 2 makes an emergency broadcast in response to reception of a detection signal by the receiver function unit 1. In detail, when the receiver function unit 1 receives a detection signal from the sensor 4, it transmits the received detection signal or a notification signal indicating that the detection signal has been received to the emergency broadcast function unit 2. When the emergency broadcast function unit 2 receives a detection signal or a notification signal from the receiver function unit 1, it makes an emergency broadcast.

[0049] This allows the integrated system 100 to automatically broadcast an emergency message when an abnormality occurs within the facility.

[0050] (1-3-4) Switch status The switch 21 in the first embodiment is basically in the on state except when it is necessary to insulate the receiver function unit 1 and the emergency broadcast function unit 2 from the housing 10. A case where it is necessary to insulate the receiver function unit 1 and the emergency broadcast function unit 2 from the housing 10 is, for example, when an insulation test is performed on at least one of the receiver function unit 1 and the emergency broadcast function unit 2.

[0051] In detail, the switch 21 is in an on state, for example, when the emergency broadcast function unit 2 is functioning. Note that "emergency broadcast function unit 2 is functioning" refers to a state in which the second DC power is supplied from the emergency broadcast power source 12 to the emergency broadcast function unit 2 and the processor of the emergency broadcast function unit 2 and the like are operating.

[0052] This makes it possible to reduce the static electricity generated in the emergency broadcast function unit 2 when the emergency broadcast function unit 2 is functioning, i.e., when the second DC power is being supplied to the emergency broadcast function unit 2 from the emergency broadcast power source 12.

[0053] The switch 21 is also in the on state when the receiver function unit 1 is functioning. "The receiver function unit 1 is functioning" refers to a state in which the first DC power is supplied from the receiver power source 11 to the receiver function unit 1 and the processor and the like of the receiver function unit 1 are operating.

[0054] This makes it possible to reduce the static electricity generated in the receiver function unit 1 when the receiver function unit 1 is functioning, i.e., when the first DC power is being supplied from the receiver power supply 11 to the receiver function unit 1.

[0055] That is, the switch 21 in the first embodiment is in the on state when at least one of the receiver function unit 1 and the emergency broadcast function unit 2 is functioning.

[0056] This makes it possible to reduce static electricity generated in at least one of the receiver function unit 1 and the emergency broadcast function unit 2 when that at least one of the function units is functioning.

[0057] In addition, when neither the receiver function unit 1 nor the emergency broadcast function unit 2 is functioning, the switch 21 may be in the off state, except when an insulation test is performed on at least one of the receiver function unit 1 and the emergency broadcast function unit 2.

[0058] The switch 21 is switched from the on state to the off state, for example, when a dielectric strength test is performed on the receiver function unit 1. That is, when a worker performs a dielectric strength test on the receiver function unit 1, the worker switches the switch 21 to the off state to open the path 20, so that the receiver function unit 1 is insulated from the housing 10, and the test can be performed properly.

[0059] The switch 21 is switched from the on state to the off state not only when a dielectric strength test is performed on the receiver function unit 1 but also when a dielectric strength test is performed on the emergency broadcast function unit 2. That is, when a dielectric strength test is performed on the emergency broadcast function unit 2, the operator can properly perform the test by switching the switch 21 to the off state.

[0060] In addition to the dielectric strength test, for example, the switch 21 is switched from the on state to the off state when an insulation resistance test is performed. That is, when an operator performs an insulation resistance test on at least one of the receiver function unit 1 and the emergency broadcast function unit 2, the operator can properly perform the test by switching the switch 21 to the off state.

[0061] Thus, in the first embodiment, the switch 21 is switched from the on state to the off state when an insulation test is performed on at least one of the receiver function unit 1 and the emergency broadcast function unit 2. This improves the insulation of the receiver function unit 1 and the emergency broadcast function unit 2 from the housing 10, making it possible to properly perform at least one test corresponding to the at least one function unit to be tested.

[0062] (1-4) First Modification of the First Embodiment The first modified example of the first embodiment (hereinafter simply referred to as "first modified example") is an example in which the connection destination of the emergency broadcast function unit 2 in the first embodiment is changed from "between the receiver function unit 1 and the switch 21 of the path 20" to "the receiver function unit 1." Note that in the first modified example, the description of matters common to the first embodiment (see FIG. 1) will be omitted or simplified, and matters different from the first embodiment will be described in detail with reference to FIG. 2.

[0063] The emergency broadcast function unit 2 in the first embodiment is electrically connected to the path 20 between the receiver function unit 1 and the switch 21 (see Figure 1), while the emergency broadcast function unit 2 in the first modified example is electrically connected to the receiver function unit 1 as shown in Figure 2.

[0064] 2 also provides the same effects as those of the first embodiment. That is, according to the first modification, not only the receiver function unit 1 but also the emergency broadcast function unit 2 can reduce static electricity and improve insulation with respect to the housing 10, and can reduce the loss of insulation of the receiver function unit 1 with respect to the housing 10 due to integration with the emergency broadcast function unit 2.

[0065] (1-5) Second Modification of the First Embodiment A second modified example of the first embodiment (hereinafter simply referred to as "second modified example") is an example of the first embodiment in which a protection circuit 22 is provided on the path 20. Note that in the second modified example, the description of the matters common to the first embodiment (see FIG. 1) will be omitted or simplified, and the matters different from the first embodiment will be described in detail with reference to FIG. 3.

[0066] The integrated system 100 in the second modification is the same as the integrated system 100 in the first embodiment (see FIG. 1), but further includes a protection circuit 22, as shown in FIG.

[0067] (1-5-1) Protection circuit When switch 21 is in the on state, protection circuit 22 protects at least one of receiver function unit 1 and emergency broadcast function unit 2 from at least one of the current and voltage via path 20. The current via path 20 is, for example, an overcurrent that flows through path 20 due to a failure of a power source such as receiver power supply 11. The voltage via path 20 is a surge voltage that is applied to a function unit such as receiver function unit 1 due to a lightning strike or the like, and causes a surge current in path 20.

[0068] This makes it possible to protect the receiver function unit 1 and the emergency broadcast function unit 2 against at least one of an increase in the current flowing through the path 20 and an increase in the voltage applied to the path 20.

[0069] The protection circuit 22 of the second modification includes a fuse, an arrester, and a surge absorber. The surge absorber is, for example, a varistor, but may also be a Zener diode or a gas-filled discharge tube.

[0070] Since the protection circuit 22 includes a fuse, when an overcurrent (i.e., a current above the rated value) flows through the path 20, the fuse melts and the path 20 opens, thereby protecting the receiver function unit 1 and the emergency broadcast function unit 2.

[0071] Furthermore, since the protection circuit 22 further includes an arrester, the receiver function unit 1 and the emergency broadcast function unit 2 can be protected against the application of a surge voltage to the path 20 due to a lightning strike or the like by discharging from the arrester to the housing 10.

[0072] Furthermore, since the protection circuit 22 further includes a surge absorber, it is possible to protect the receiver function unit 1 and the emergency broadcast function unit 2 from a surge voltage applied to the path 20. For example, if the surge absorber is a varistor, the resistance value of the varistor drops sharply in response to the application of a surge voltage to the path 20, causing a surge current to flow from the path 20 to the housing 10, thereby protecting the receiver function unit 1 and the emergency broadcast function unit 2. In addition, the surge current passing through such path 20 can suppress the continuation of discharge from the arrester (so-called follow-on current).

[0073] (1-6) Third Modification of the First Embodiment A third modified example of the first embodiment (hereinafter simply referred to as "third modified example") is an example in which an emergency telephone function unit 3 is connected to the receiver function unit 1 in the second modified example. Note that in the third modified example, the description of the matters common to the second modified example (see FIG. 3) will be omitted or simplified, and the matters different from the second modified example will be described in detail with reference to FIG. 4.

[0074] (1-6-1) Overview of the third modified example The integrated system 100 in the third modified example is the same as the integrated system 100 in the second modified example (see FIG. 3), and further includes an emergency call function unit 3 and a base unit 31. The emergency call function unit 3 has an emergency call function that realizes a call between a handset 32 ​​installed in the facility and the base unit 31 installed in a predetermined location. The predetermined location, i.e., the location where the base unit 31 is installed, is outside the facility, and in the third modified example, it is the same location as the integrated system 100 is installed, for example, a control room.

[0075] Specifically, the master unit 31 is, for example, detachably attached to the outer surface of the housing 10 of the integrated system 100, but may be installed together with the integrated system 100. However, the master unit 31 may be installed in a location away from the integrated system 100, for example, in the building of a security company or the like, and the installation location of the master unit 31 is not important.

[0076] (1-6-2) Advantages of the third variant According to the third modification, the integrated system 100 can realize the integration of three functions, the receiver, the emergency broadcast equipment, and the emergency telephone, by further including the emergency telephone function unit 3. In other words, when an abnormality occurs in a facility (for example, on one floor of a building), the receiver function unit 1 receives a detection signal from the sensor 4, the emergency broadcast function unit 2 makes an emergency broadcast on the speaker 5 in the facility, and the emergency telephone function unit 3 enables a call between the handset 32 ​​in the facility and the base unit 31 in a predetermined location (for example, the management office of the building).

[0077] 4 is an example and may be modified as appropriate. For example, the master unit 31 may not be included in the components of the integrated system 100. The master unit 31 may be included in the components of the integrated system 100.

[0078] (1-6-3) Details of the third modified example The emergency call function unit 3 in the third modified example is electrically connected and communicably connected to the receiver function unit 1. The receiver function unit 1, the emergency broadcast function unit 2, and the emergency call function unit 3 are electrically insulated from the housing 10 except for the path 20.

[0079] That is, in the third modified example, the receiver function unit 1 and the emergency telephone function unit 3 are connected so as to be able to communicate with each other, and the emergency telephone function unit 3 realizes the function of an emergency telephone in response to reception of a detection signal by the receiver function unit 1.

[0080] In detail, when the receiver function unit 1 receives a detection signal from the detector 4, it transmits the received detection signal or a notification signal indicating that the detection signal has been received to the emergency call function unit 3. The emergency call function unit 3 realizes the function of an emergency call when it receives a detection signal or a notification signal from the receiver function unit 1. In this way, when an abnormality occurs within the facility, the integrated system 100 can automatically enable an emergency call between the handset 32 ​​and the base unit 31.

[0081] 4, the path 20 in the third modified example is the only electrical path electrically connecting the receiver function unit 1, the emergency broadcast function unit 2, and the emergency telephone function unit 3 to the housing 10. Therefore, when an operator switches the switch 21 from the on state to the off state, the receiver function unit 1, the emergency broadcast function unit 2, and the emergency telephone function unit 3 become electrically insulated from the housing 10.

[0082] In this way, the receiver function unit 1, the emergency broadcast function unit 2, and the emergency telephone function unit 3 are insulated from the housing 10, so that an operator can properly perform an insulation test on at least one of the receiver function unit 1, the emergency broadcast function unit 2, and the emergency telephone function unit 3, in particular, a dielectric strength test on the receiver function unit 1. In other words, in the third modified example, it is possible to reduce the loss of insulation of the receiver function unit 1 from the housing 10 due to integration with the emergency telephone function unit 3.

[0083] (2) Second embodiment In the second embodiment, the description of the matters common to the first embodiment (see FIG. 1) will be omitted or simplified, and the matters different from the first embodiment will be described in detail with reference to FIG.

[0084] As shown in FIG. 1, the integrated system 100 of the first embodiment comprises a receiver function unit 1, a path 20 electrically connecting the receiver function unit 1 and the housing 10, a switch 21 provided on the path 20, and an emergency broadcast function unit 2 electrically connected between the receiver function unit 1 and the switch 21 on the path 20, thereby making it possible to collectively reduce static electricity in the receiver function unit 1 and the emergency broadcast function unit 2, and to collectively improve the insulation of the receiver function unit 1 and the emergency broadcast function unit 2 with respect to the housing 10.

[0085] 5, the integrated system 100 of the second embodiment includes a receiver function unit 1, a first path 20 electrically connecting the receiver function unit 1 and the housing 10, a first switch 21 provided on the first path 20, an emergency broadcast function unit 2 electrically insulated from the receiver function unit, a second path 20a electrically connecting the emergency broadcast function unit 2 and the housing 10, and a second switch 21a provided on the second path 20a. As a result, the integrated system 100 of the second embodiment can individually reduce the charging of the receiver function unit 1 and the charging of the emergency broadcast function unit 2, and can individually improve the insulation of the receiver function unit 1 with respect to the housing 10 and the insulation of the emergency broadcast function unit 2 with respect to the housing 10.

[0086] (2-1) Overview of the Second Embodiment The integrated system 100 according to the second embodiment of the present disclosure includes a housing 10, a receiver function unit 1, a first path 20, a first switch 21, an emergency broadcast function unit 2, a second path 20a, and a second switch 21a, as shown in Fig. 5. The first path 20 and the second path 20a may be excluded from the components of the integrated system 100.

[0087] (2-1-1) First path and first switch The first path 20 corresponds to the path 20 in the first embodiment. That is, the first path 20 electrically connects between the receiver function unit 1 and the housing 10. The first switch 21 corresponds to the switch 21 in the first embodiment. That is, the first switch 21 is provided on the first path 20, and opens the first path 20 in response to switching from an on state to an off state, and closes the first path 20 in response to switching from an off state to an on state. Note that the switch 21 in the second embodiment is also manually operated directly or indirectly, similar to the switch 21 in the first embodiment.

[0088] (2-1-2) Connection status between the receiver function unit and the emergency broadcast function unit The emergency broadcast function section 2 of the second embodiment is electrically insulated from the receiver function section 1.

[0089] That is, in the second embodiment, the receiver function unit 1 and the emergency broadcast function unit 2 are electrically insulated from each other and connected to each other so as to be able to communicate with each other. When the receiver function unit 1 receives a detection signal from the sensor 4, it transmits the received detection signal or a notification signal indicating that the detection signal has been received to the emergency broadcast function unit 2 by insulated communication. The emergency broadcast function unit 2 makes an emergency broadcast in response to the reception of the detection signal by the receiver function unit 1. As a result, in the integrated system 100, when an abnormality occurs within the facility, the emergency broadcast function unit 2 can automatically make an emergency broadcast.

[0090] (2-1-3) Second path and second switch The second path 20a electrically connects the emergency broadcast function unit 2 and the housing 10. The second switch 21a is provided on the second path 20a, and opens the second path 20a in response to switching from an on state to an off state, and closes the second path 20a in response to switching from an off state to an on state.

[0091] (2-2) Advantages of the Second Embodiment According to the second embodiment, the integrated system 100 includes a first path 20 electrically connecting the receiver function unit 1 and the housing 10, a first switch 21 provided on the first path 20, a second path 20a electrically connecting the emergency broadcast function unit 2 and the housing 10, and a second switch 21a provided on the second path 20a, so that the receiver function unit 1 and the emergency broadcast function unit 2 can be individually tested to reduce charging and improve insulation. For example, an operator can appropriately perform a dielectric strength test on the receiver function unit 1 by switching only the first switch 21 to an off state while leaving the second switch 21a in an on state. However, the first switch 21 and the second switch 21a may be configured to be switched in conjunction with each other.

[0092] Furthermore, in the integrated system 100, the emergency broadcast function unit 2 is electrically insulated from the receiver function unit 1, thereby reducing the risk that the insulation of the receiver function unit 1 from the housing 10 will be impaired due to integration with the emergency broadcast function unit 2.

[0093] (2-3) Details of the Second Embodiment More specifically, as shown in FIG. 5, the integrated system 100 of the second embodiment further includes a receiver power supply 11 and an emergency broadcast power supply 12 in addition to the components explained in the overview of the second embodiment.

[0094] The primary sides of the receiver power supply 11 and the emergency broadcast power supply 12 are connected to separate switches in the breaker 300, and the power supply from the commercial power supply 200 to the receiver power supply 11 and the emergency broadcast power supply 12 can be individually cut off. When performing an insulation test of the receiver power supply 11, an operator turns off the switch to which the primary side of the receiver power supply 11 is connected.

[0095] This cuts off the power supply from the commercial power source 200 to the receiver power source 11, improving safety when conducting an insulation test of the receiver power source 11. Similarly, when conducting an insulation test of the emergency broadcast power source 12, an operator can improve safety by turning off another switch to which the primary side of the emergency broadcast power source 12 is connected.

[0096] (2-4) Modification of the second embodiment Modification of the second embodiment: In the second embodiment, a protection circuit 22 is provided on the second path 20a, and an emergency telephone function unit 3 is connected to the receiver function unit 1. In the modification, the description of the matters common to the second embodiment (see FIG. 5) will be omitted or simplified, and the matters different from the second embodiment will be described in detail with reference to FIG. 6.

[0097] The integrated system 100 of the modified example further includes a protection circuit 22 and an emergency call function unit 3 as shown in Fig. 6 in addition to the integrated system 100 of the second embodiment (see Fig. 5). The protection circuit 22 is provided on the second path 20a, and protects the emergency broadcast function unit 2 from at least one of a current and a voltage via the second path 20a when the second switch 21a is in an on state. This allows the integrated system 100 of the modified example to protect the emergency broadcast function unit 2 from at least one of an increase in the current flowing through the second path 20a and an increase in the voltage applied to the second path 20a.

[0098] The protection circuit 22 may be provided on the first path 20. In this case, the protection circuit 22 protects the receiver function unit 1 from at least one of a current and a voltage passing through the first path 20 when the first switch 21 is in an on state. Alternatively, the protection circuit 22 may be provided on each of the first path 20 and the second path 20a.

[0099] The emergency call function unit 3 is electrically connected to the receiver function unit 1 and is communicatively connected to the receiver function unit 1. In this way, the integrated system 100 of the modified example can realize the integration of three functions corresponding to the receiver, the emergency broadcast equipment, and the emergency call, and can reduce the loss of insulation of the receiver function unit 1 with respect to the housing 10 due to the integration with the emergency call function unit 3.

[0100] (3) Third embodiment The third embodiment of the present disclosure is a comprehensive embodiment corresponding to the first embodiment and the first to third modified examples (see FIGS. 1 to 4).

[0101] The integrated system 100 of the third embodiment includes a housing 10, a functional unit group, a path 20, and a switch 21. The housing 10 houses the functional unit group, the path 20, and the switch 21. However, some of the functional unit group, the path 20, and the switch 21 may be provided outside the housing 10.

[0102] The functional unit group is a collection of multiple functional units. Each of the multiple functional units realizes various functions related to dealing with abnormalities that occur within the facility. The various functions include, for example, a receiver function, an emergency broadcasting equipment function, and an emergency telephone function.

[0103] The functional unit group in the third embodiment includes a plurality of functional units electrically connected to each other and connected to each other so as to be able to communicate with each other. That is, the plurality of functional units in the third embodiment are connected to each other so as to be able to communicate with each other by wire. Such a plurality of functional units are, for example, the "receiver functional unit 1 and the emergency broadcast functional unit 2" (see Figs. 1 and 2) described in the first embodiment and the first and second modified examples, or the "receiver functional unit 1, the emergency broadcast functional unit 2, and the emergency phone functional unit 3" (see Fig. 4) described in the third modified example. Therefore, hereinafter, the plurality of functional units will be referred to as "plurality of functional units (1-3)". Also, a functional unit group including the plurality of functional units (1-3) will be referred to as a "functional unit group (1-3)".

[0104] In addition, "electrically connected to each other" includes cases where the functional units are directly connected to each other by coupling an input terminal and an output terminal, for example, and cases where the functional units are connected via a conductor.

[0105] In the integrated system 100 of the third embodiment, the functional unit group (1 to 3) operates with power supplied from the power source to realize various functions related to dealing with abnormalities occurring within the facility. The power supplied from the power source is, for example, the first DC power supplied from the receiver power source 11 and the first DC power supplied from the emergency broadcast power source 12, but may also be AC ​​power supplied from the commercial power source 200 via the breaker 300. The various functions are, for example, a receiver function, an emergency broadcast equipment function, an emergency telephone function, etc.

[0106] The path 20 electrically connects the functional unit group (1 to 3) and the housing 10. The switch 21 is provided on the path 20, and opens the path 20 in response to switching from an on state to an off state, and closes the path 20 in response to switching from an off state to an on state.

[0107] As described above, the integrated system 100 of the third embodiment can realize the integration of multiple functions related to dealing with abnormalities by including the functional unit groups (1-3). Also, the integrated system 100 can improve the insulation of the functional unit groups (1-3) with respect to the housing 10 by including the path 20 that electrically connects between the functional unit groups (1-3) and the housing 10 and the switch 21 provided on the path 20, while reducing the charging of the functional unit groups (1-3) caused by at least one of the supplied power and the operation by the power.

[0108] Moreover, in the integrated system 100 of the third embodiment, the functional unit group (1 to 3) is electrically insulated from the housing 10 except for the path 20. Therefore, by turning off the switch 21 and opening the path 20, the functional unit group (1 to 3) is electrically insulated from the housing 10, so that an insulation test can be properly performed on the functional unit group (1 to 3).

[0109] (4) Fourth embodiment The fourth embodiment of the present disclosure is a form showing a superordinate concept of the second embodiment and the modified example (see FIG. 5 and FIG. 6).

[0110] In the fourth embodiment, the description of the matters common to the third embodiment will be omitted or simplified, and the matters different from the third embodiment will be described in detail.

[0111] In the integrated system 100 according to the third embodiment, the multiple functional units (1-3) constituting the functional unit group (1-3) are electrically connected to each other and connected to be able to communicate with each other, whereas in the integrated system 100 according to the fourth embodiment, the multiple functional units (1-3) constituting the functional unit group (1-3) are electrically insulated from each other and connected to be able to communicate with each other. In other words, the multiple functional units (1-3) are connected to be able to communicate with each other insulated from each other. Such multiple functional units (1-3) are, for example, the "receiver function unit 1 and emergency broadcast function unit 2" (see FIG. 5) described in the second embodiment, or the "receiver function unit 1, emergency broadcast function unit 2, and emergency phone function unit 3" (see FIG. 6) described in the modified example of the second embodiment.

[0112] Each of the multiple functional units (1 to 3) is electrically connected to the housing 10 via a path 20 provided with a switch 21. In other words, the integrated system 100 includes pairs of paths 20 and switches 21 in the same number as the number of functional units (1 to 3) constituting the functional unit group (1 to 3).

[0113] Thus, according to the fourth embodiment, for each of the multiple functional parts (1 to 3) constituting the functional part group (1 to 3), a pair of a path 20 electrically connecting the functional part and the housing 10 and a switch 21 provided on the path 20 is provided, so that it is possible to reduce static electricity while improving insulation against the housing 10 for each of the multiple functional parts (1 to 3) individually.

[0114] (5) Other modifications (5-1) Modifications of the switching method The switching of the switch 21 does not necessarily have to be entirely performed manually, but may be partially performed automatically. In this case, the integrated system 100 further includes a switching mechanism for switching the switch 21 and a drive circuit for driving the switching mechanism.

[0115] For example, a situation may be assumed in which an operator manually switches switch 21 to the OFF state to perform an insulation test, and then shuts down integrated system 100 after the test is completed without switching switch 21. When integrated system 100 is subsequently restarted, switch 21 may automatically switch from the OFF state to the ON state by the drive circuit driving the switching mechanism.

[0116] (5-2) Modifications of the protection circuit The protection circuit 22 may include a fuse and either an arrester or a surge absorber. In this case, the receiver function unit 1 and the emergency broadcast function unit 2 are protected from overcurrent and surge voltage.

[0117] Alternatively, the protection circuit 22 may include only a fuse, and may not include an arrester or a surge absorber. In this case, the receiver function unit 1 and the emergency broadcast function unit 2 are protected from an overcurrent.

[0118] Alternatively, the protection circuit 22 may include, for example, only one of an arrester and a surge absorber, and may not include a fuse. In this case, the receiver function unit 1 and the emergency broadcast function unit 2 are protected from surge voltages.

[0119] (5-3) Modification of emergency broadcast function part The emergency broadcast function unit 2 does not have to be able to communicate with the receiver function unit 1. The receiver function unit 1 may further have, for example, a touch panel, ring an emergency bell in response to receiving an alarm signal from the detector 4, and accept manual operation by an operator who hears the ringing sound via the touch panel. The emergency broadcast function unit 2 may make an emergency broadcast in response to the accepted manual operation.

[0120] (6) Summary The integrated system (100) according to the first embodiment includes a housing (10), a receiver function unit (1), a switch (21), and an emergency broadcast function unit (2). The housing (10) is made of metal. The receiver function unit (1) receives a detection signal from a sensor (4). The sensor (4) detects an abnormality occurring in the facility. The switch (21) is provided on a path (20) that electrically connects between the receiver function unit (1) and the housing (10), and opens the path (20) in response to switching from an on state to an off state, and closes the path (20) in response to switching from an off state to an on state. The emergency broadcast function unit (2) makes an emergency broadcast. The emergency broadcast function unit (2) is electrically connected between the receiver function unit (1) and the switch (21) of the path (20), or is electrically connected to the receiver function unit (1).

[0121] According to this aspect, the integrated system (100) includes the receiver function unit (1) and the emergency broadcast function unit (2), thereby realizing the integration of two functions, that is, the receiver and the emergency broadcast equipment. The integrated system (100) also includes a switch (21) provided on a path (20) that electrically connects the receiver function unit (1) and the housing (10), thereby reducing the charge on the receiver function unit (1) and improving the insulation of the receiver function unit (1) from the housing (10). Furthermore, in the integrated system (100), the emergency broadcast function unit (2) is electrically connected between the receiver function unit (1) and the switch (21) on the path (20) (see FIG. 1), or is electrically connected to the receiver function unit (1) (see FIG. 2). This makes it possible to reduce static electricity and improve the insulation of the emergency broadcast function unit (2) with respect to the housing (10), and also to reduce the loss of insulation of the receiver function unit (1) with respect to the housing (10) due to integration with the emergency broadcast function unit (2).

[0122] In the integrated system (100) according to the second aspect, the receiver function unit (1) and the emergency broadcast function unit (2) are connected to each other so as to be able to communicate with each other. The emergency broadcast function unit (2) makes an emergency broadcast in response to reception of a detection signal by the receiver function unit (1).

[0123] According to this aspect, when an abnormality occurs within the facility, an emergency broadcast can be automatically made.

[0124] In the integrated system (100) according to the third aspect, in the first or second aspect, the switch (21) is switched from an on state to an off state when an insulation test is performed on at least one of the receiver function unit (1) and the emergency broadcast function unit (2).

[0125] According to this embodiment, when an operator performs an insulation test on at least one of the receiver function unit (1) and the emergency broadcast function unit (2), the operator can properly perform at least one test corresponding to the at least one functional unit (1, 2) that is the subject of the insulation test by switching the switch (21) to the off state and opening the path (20).

[0126] In the integrated system (100) according to the fourth aspect, in the third aspect, the switch (21) is switched from the on state to the off state when a dielectric strength test is performed on the receiver function unit (1).

[0127] According to this embodiment, when performing a dielectric strength test of the receiver function unit (1) required by law or the like, the test can be performed properly by switching the switch (21) to the off state and opening the path (20).

[0128] In the integrated system (100) according to the fifth aspect, in any of the first to fourth aspects, the switch (21) is in an on state when at least one of the receiver function unit (1) and the emergency broadcast function unit (2) is functioning.

[0129] According to this aspect, when at least one of the receiver function unit (1) and the emergency broadcast function unit (2) is functioning, it is possible to reduce static electricity generated in at least one of the function units.

[0130] In the integrated system (100) according to the sixth aspect, in the fifth aspect, the switch (21) is in an on state when the emergency broadcast function unit (2) is functioning.

[0131] According to this aspect, when at least one of the receiver function unit (1) and the emergency broadcast function unit (2) is functioning, it is possible to reduce static electricity generated in at least one of the function units.

[0132] The integrated system (100) according to a seventh aspect is in any one of the first to sixth aspects, and further includes a protection circuit (22). The protection circuit (22) is provided in the path (20). When the switch (21) is in an on state, the protection circuit (22) protects at least one of the receiver function unit (1) and the emergency broadcast function unit (2) from at least one of a current and a voltage passing through the path (20).

[0133] According to this embodiment, it is possible to protect the receiver function unit (1) and the emergency broadcast function unit (2) against at least one of an increase in the current flowing through the path (20) and an increase in the voltage applied to the path (20).

[0134] In the integrated system (100) according to the eighth aspect, in the seventh aspect, the protection circuit (22) includes a fuse.

[0135] According to this embodiment, when an overcurrent (current above the rated value) flows through the path (20), the fuse melts and the path (20) is opened, thereby protecting the receiver function unit (1) and the emergency broadcast function unit (2).

[0136] In the integrated system (100) according to the ninth aspect, in the seventh or eighth aspect, the protection circuit (22) includes an arrester.

[0137] According to this embodiment, the receiver function section (1) and the emergency broadcast function section (2) can be protected by discharging from the arrester against the application of a surge voltage to the path (20) due to a lightning strike or the like.

[0138] In the integrated system (100) according to a tenth aspect, in any one of the seventh to ninth aspects, the protection circuit (22) includes a surge absorber.

[0139] According to this embodiment, it is possible to protect the receiver function unit (1) and the emergency broadcast function unit (2) from a surge voltage on the path (20) due to a lightning strike or the like.

[0140] In the integrated system (100) according to the eleventh aspect, in any one of the first to tenth aspects, the receiver function unit (1) and the emergency broadcast function unit (2) are electrically insulated from the housing (10) except for the path (20).

[0141] According to this embodiment, by turning off the switch (21), the path (20) is opened, and the receiver function unit (1) and the emergency broadcast function unit (2) are electrically insulated from the housing (10). Therefore, the dielectric strength test can be properly performed.

[0142] The integrated system (100) according to a twelfth aspect is in any one of the first to eleventh aspects, and further includes an emergency call function unit (3). The emergency call function unit (3) realizes a call between a handset (32) installed in a facility and a base unit (31) installed at a predetermined location.

[0143] According to this embodiment, the integrated system (100) can realize the integration of three functions, namely, the receiver, the emergency broadcast equipment, and the emergency telephone, by further including the emergency telephone function unit (3). In other words, when an abnormality occurs in the facility, the receiver function unit (1) receives a detection signal from the detector (4) and makes an emergency broadcast, and also enables communication between the handset (32) in the facility and the master unit (31) at a predetermined location.

[0144] In addition, in the twelfth aspect, the receiver function unit (1) and the emergency telephone function unit (3) are connected to each other so that they can communicate with each other, and the emergency telephone function unit (3) may realize the function of an emergency telephone when the receiver function unit (1) receives a detection signal.

[0145] According to this, when an abnormality occurs within the facility, emergency calls between the handset (32) and the base unit (31) can be automatically enabled.

[0146] In addition, in a twelfth aspect, the emergency telephone function unit (3) may be further electrically connected to the receiver function unit (1), and the receiver function unit (1), the emergency broadcast function unit (2), and the emergency telephone function unit (3) may be electrically insulated from the housing (10) except for the path (20).

[0147] This can reduce the risk of the insulation of the receiver function section (1) with respect to the housing (10) being impaired by integration with the emergency call function section (3).

[0148] The integrated system (100) according to the thirteenth aspect includes a housing (10), a receiver function unit (1), a first switch (21), an emergency broadcast function unit (2), and a second switch (21a). The housing (10) is made of metal. The receiver function unit (1) receives a detection signal from a sensor (4). The sensor (4) is provided in a facility and detects an abnormality occurring in the facility. The first switch (21) is provided on a first path (20) that electrically connects between the receiver function unit (1) and the housing (10), and opens the first path (20) in response to switching from an on state to an off state, and closes the first path (20) in response to switching from an off state to an on state. The emergency broadcast function unit (2) makes an emergency broadcast. The emergency broadcast function unit (2) is electrically insulated from the receiver function unit (1). The second switch (21a) is provided on a second path (20a) that electrically connects between the emergency broadcast function unit (2) and the housing (10), and opens the second path (20a) in response to switching from an on state to an off state, and closes the second path (20a) in response to switching from the off state to an on state.

[0149] According to this aspect, the integrated system (100) can integrate two functions, a receiver and an emergency broadcast facility, by including the receiver function unit (1) and the emergency broadcast function unit (2). That is, when an abnormality occurs in the facility, the integrated system (100) can receive a detection signal from the detector (4) and make an emergency broadcast. In addition, by including the first switch (21) provided on the first path (20) that electrically connects between the receiver function unit (1) and the housing (10) and the second switch (21a) provided on the second path (20a) that electrically connects between the emergency broadcast function unit (2) and the housing (10), it is possible to reduce charging and improve insulation for the receiver function unit (1) and the emergency broadcast function unit (2) individually. For example, by switching only the first switch (21) to the off state while keeping the second switch (21a) in the on state, a dielectric strength test for the receiver function unit (1) can be appropriately performed. Furthermore, in the integrated system (100), the emergency broadcast function unit (2) is electrically insulated from the receiver function unit (1), thereby making it possible to prevent the insulation of the receiver function unit (1) from the housing (10) from being impaired by integration with the emergency broadcast function unit (2).

[0150] In the thirteenth aspect, the receiver function unit (1) and the emergency broadcast function unit (2) may be electrically insulated from each other and connected to each other so as to be able to communicate with each other. The emergency broadcast function unit (2) may make an emergency broadcast in response to reception of a detection signal by the receiver function unit (1).

[0151] According to this, since the receiver function unit (1) and the emergency broadcast function unit (2) are capable of isolated communication, a dielectric strength voltage test can be properly performed on the receiver function unit (1), and the emergency broadcast function unit (2) can automatically make an emergency broadcast when an abnormality occurs within the facility.

[0152] In a thirteenth aspect, the integrated system (100) may further include a protection circuit (22). The protection circuit (22) is provided in the second path (20a) and protects the emergency broadcast function unit (2) from at least one of a current and a voltage passing through the second path (20a) when the second switch (21a) is in an on state.

[0153] This makes it possible to protect the emergency broadcast function unit (2) against at least one of an increase in the current flowing through the second path (20a) and an increase in the voltage applied to the second path (20a).

[0154] In the thirteenth aspect, the integrated system (100) may further include an emergency call function unit (3). The emergency call function unit (3) realizes a call between a handset (32) installed in the facility and a base unit (31) installed at a predetermined location.

[0155] According to this, the integrated system (100) can realize the integration of three functions corresponding to a receiver, an emergency broadcasting system, and an emergency telephone by further including an emergency telephone function unit (3). In other words, when an abnormality occurs in the facility, an emergency broadcast is made upon receiving a detection signal from a detector (4), and an emergency call can be made between a handset (32) installed in the facility and a master unit (31) installed at a predetermined location. [Explanation of symbols]

[0156] 1 Receiver function section 2 Emergency broadcast function section 3 Emergency telephone function section 4 sensor 10. Chassis 20 Route (1st Route) 20a 2nd Route 21 Switch (1st switch) 21a Second switch 100 Integrated Systems

Claims

1. A metal case and A receiver function unit that receives a detection signal from a detector that detects an abnormality occurring within the facility; a switch that is provided on a path that electrically connects the receiver function unit and the housing, the switch opening the path in response to switching from an on state to an off state and closing the path in response to switching from the off state to the on state; An emergency broadcast function unit electrically connected between the receiver function unit and the switch of the path or electrically connected to the receiver function unit for making an emergency broadcast. Integrated system.

2. The receiver function unit and the emergency broadcast function unit are connected to each other so as to be able to communicate with each other, The emergency broadcast function unit performs the emergency broadcast in response to reception of the detection signal by the receiver function unit. The integrated system of claim 1 .

3. The switch is switched from the on state to the off state when an insulation test is performed on at least one of the receiver function unit and the emergency broadcast function unit.

3. An integrated system according to claim 1 or 2.

4. the switch is switched from the on state to the off state when a dielectric strength test is performed on the receiver function unit. The integrated system of claim 3.

5. The switch is in the on state when at least one of the receiver function unit and the emergency broadcast function unit is functioning. The integrated system of claim 1 .

6. The switch is in the on state when the emergency broadcast function unit is functioning. The integrated system of claim 5.

7. Further provided with a protection circuit that is provided in the path and protects at least one of the receiver function unit and the emergency broadcast function unit from at least one of the current and voltage through the path when the switch is in the on state. The integrated system of claim 1 .

8. the protection circuit includes a fuse; The integrated system of claim 7.

9. The protection circuit includes an arrester. The integrated system of claim 7.

10. the protection circuit includes a surge absorber; The integrated system of claim 7.

11. The receiver function unit and the emergency broadcast function unit are electrically insulated from the housing except for the path. The integrated system of claim 1 .

12. and an emergency call function unit for realizing a call between a handset installed in the facility and a base unit installed at a predetermined location. The integrated system of claim 1 .

13. A metal case and A receiver function unit that receives a detection signal from a detector that detects an abnormality occurring within the facility; a first switch that is provided on a first path that electrically connects the receiver function unit and the housing, the first switch opening the first path in response to switching from an on state to an off state and closing the first path in response to switching from the off state to the on state; An emergency broadcast function unit that is electrically insulated from the receiver function unit and performs emergency broadcasts; A second switch is provided on a second path electrically connecting the emergency broadcast function unit and the housing, and opens the second path in response to switching from an on state to an off state, and closes the second path in response to switching from the off state to the on state. Integrated system.

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