Audio devices

Abstract

To obtain an acoustic device capable of alleviating time constraints when performing a ringing test.SOLUTION: An acoustic device includes a main body having a motor, a ringing unit, and a ringing mechanism, and when an external drive voltage is applied to the motor, the ringing mechanism is driven and the sound is produced by the vibration of the ringing unit. The acoustic device further includes a sound suppression unit that is placed in contact with the ringing unit when a sound test is performed, and the sound suppression unit includes sound-absorbing material that suppresses the vibration of the ringing unit when the ringing mechanism is driven.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an acoustic device having a configuration suitable for a sound test. [Background technology]

[0002] There is an automatic fire alarm system that is configured with a receiver, a transmitter, a repeater, an acoustic device, a sensor, etc., and protects people inside a building or other object that is subject to fire protection from fire (see, for example, Non-Patent Document 1). In an automatic fire alarm system, the sensor detects heat or smoke and sends a fire signal to the receiver. The receiver that receives the fire signal issues an alarm and activates the acoustic device depending on the location of the fire, thereby notifying people inside the object that a fire has occurred. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Nohmi Bosai Co., Ltd. website, Automatic Fire Alarm System (URL: https: / / www.nohmi.co.jp / product / materiel / fid.html) Summary of the Invention [Problem to be solved by the invention]

[0004] Such automatic fire alarm systems are subject to installation standards set according to the purpose and scale of the fire protection target, and are also required to undergo regular legal inspections.Regarding the emergency bell (sounding part) installed in the sound device included in the automatic fire alarm system, legal inspections are required to check the sounding once every six months and the sounding and sound pressure once a year.

[0005] When conducting sound testing to check the sound and sound pressure of sound-generating components, consideration must be given to facility users, so work that produces noise is often done at night or on holidays. Therefore, in order to ensure a healthy working environment for inspectors and reduce overtime, it is highly desirable to relax the time constraints for conducting sound testing and reduce the amount of work done at night and on holidays.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an acoustic device that can alleviate time constraints when conducting a sound test. [Means for solving the problem]

[0007] The acoustic device according to the present disclosure includes a main body having a motor, a sounding unit, and a sounding mechanism, and the sounding mechanism is driven by applying a drive voltage to the motor from an external source, causing the sounding unit to vibrate, By confirming the sound The apparatus further includes a sound suppressing unit that is placed in contact with the sounding unit when performing a sound test, and the sound suppressing unit includes a sound-deadening material that suppresses vibration of the sounding unit when the sounding mechanism is activated. ,While suppressing the volume, it is possible to check whether there is a disconnection or an abnormal operation by sound. It is something. In addition, the acoustic device according to the present disclosure comprises a main body having a motor, a sounding unit, and a sounding mechanism, and the sounding mechanism is driven by applying a drive voltage to the motor from the outside, causing the sounding unit to vibrate, and the acoustic device further comprises a sound suppression unit that is placed in contact with the sounding unit when a sounding test is performed, the sound suppression unit comprising sound-absorbing material that suppresses the vibration of the sounding unit when the sounding mechanism is driven, the sound suppression unit being capable of measuring the impact energy caused by the vibration of the sounding unit when the sounding mechanism is driven, and further comprises an operation confirmation circuit that determines whether the main body is normal or not based on the magnitude of the impact energy. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to obtain an acoustic device that can alleviate time constraints when conducting a sound test. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an overall configuration diagram of an automatic fire alarm system including an acoustic device according to a first embodiment of the present disclosure. [Figure 2] 1 is an explanatory diagram showing a schematic configuration of an acoustic device according to a first embodiment of the present disclosure. [Figure 3] 1 is a functional block diagram of an audio device according to a first embodiment of the present disclosure. [Figure 4] 4 is a flowchart showing a series of processes related to a sound confirmation method for an audio device according to the first embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, preferred embodiments of the acoustic device of the present disclosure will be described with reference to the drawings. The acoustic device according to the present disclosure has a technical feature in that it is configured to vibrate the sounding unit by driving the sounding mechanism while the main body is covered with sound-deadening material to reduce noise, and then determine whether the acoustic device is normal or not based on the results of measuring the impact energy caused by the vibration. As a result, it is possible to alleviate time constraints when conducting a sounding test.

[0011] Embodiment 1 First, an overview of a system to which the acoustic device is applied will be described. 1 is a diagram illustrating the overall configuration of an automatic fire alarm system including an acoustic device according to a first embodiment of the present disclosure. A fire receiver 10 is connected to an addressable transmitter 20, fire detectors 31 and 32, a detector repeater 40, and a smoke control repeater 50 via a signal line SG1.

[0012] A plurality of fire detectors are connected to the detector repeater 40. Two fire detectors 41 and 42 are shown in Fig. 1. A fire door 51, a smoke exhaust machine 52, a shutter 53, and a hanging wall 54 are connected to the smoke prevention and exhaust control repeater 50.

[0013] The fire control signal receiver 10 is also connected to the audio devices 61 and 62 and the audio device repeater 70 via a signal line SG2. A plurality of audio devices are connected to the audio device repeater 70. In FIG. 1, two audio devices 71 and 72 are shown as an example.

[0014] Here, the fire detectors 31, 32 and the fire detectors 41, 42 correspond to a plurality of fire detectors that detect the occurrence of a fire in each of the preset fire monitoring areas.

[0015] In addition, the fire door 51, smoke exhaust fan 52, shutter 53, and drop wall 54 operate in conjunction with the detection results of each of the multiple fire detectors, and function to prevent the spread of fire, smoke, etc.

[0016] The sound devices 61, 62 and the sound devices 71, 72 correspond to a plurality of local sound devices that notify the occurrence of a fire in each of the predetermined local areas.

[0017] Address information for identifying each individual fire detector is assigned in advance to each of the multiple fire detectors. Each of the multiple fire detectors can transmit fire-related information including the address information assigned to it to the fire control panel 10. Meanwhile, the fire control panel 10 can transmit required information to a desired fire detector by adding address information to the information.

[0018] Furthermore, each of the multiple terminal devices is assigned address information in advance to identify the individual terminal device. Therefore, the fire control device 10 can transmit a command to operate the desired terminal device by adding the address information and transmitting the information.

[0019] In addition, each of the multiple sound devices is located on a separate line for each district. The fire control device 10 can activate all of the sound devices on the same line by applying a voltage to the sound devices connected to the same line.

[0020] With this configuration, the fire receiving device 10 collects fire-related information from a plurality of fire detectors installed in various predetermined fire monitoring areas and the addressable transmitter 20. Then, the fire receiving device 10 can issue a fire alarm and activate a group of terminal equipment based on the collected fire-related information.

[0021] Furthermore, based on the collected fire-related information, the fire receiver 10 can simultaneously ring bells in the area by applying voltage to the line connected to the sound device installed in the area where an alarm is required.

[0022] Also, although not shown in the figure, the fire receiver 10 can output an alarm signal based on the collected fire-related information, activate fire extinguishing equipment to begin fire extinguishing operations, issue a fire alarm or provide evacuation guidance using an emergency broadcast device, and transmit fire-related information to a higher-level device via a network.

[0023] It is assumed that the acoustic devices 61, 62 and the acoustic devices 71, 72 shown in FIG. 1 are installed in the same area and connected to the fire control signal receiver 10 by the same line.

[0024] The sound device included in the automatic fire alarm system with such a configuration is required to undergo a legal inspection to check the sound operation and sound pressure. At present, a sound test is required to ring the bell during the legal inspection.

[0025] However, if the volume of the sound generated when the bell, which is the sounding unit, is rung at a desired timing other than during statutory inspections can be suppressed, abnormalities can be discovered before the statutory inspection and repairs can be made before or during the statutory inspection. Furthermore, if the volume generated by the sound device can be suppressed during statutory inspections and it is possible to easily detect whether the sound device has a broken wire or an abnormal operation, it is expected that the workload of inspectors can be reduced.

[0026] Therefore, the acoustic device according to the first embodiment, which is provided with a configuration for suppressing the volume of sound generated when the sounding unit sounds, will be described in detail.

[0027] Fig. 2 is an explanatory diagram showing a schematic configuration of the audio device according to the first embodiment of the present disclosure. Fig. 3 is a functional block diagram of the audio device according to the first embodiment of the present disclosure. Note that Fig. 2 omits the illustration of the motor 211. On the other hand, Fig. 3 illustrates the motor 211 and the internal configuration of the operation check circuit 222.

[0028] The features of the acoustic device 200 according to the first embodiment will be described in detail with reference to FIGS.

[0029] The acoustic device 200 is configured to include a main body 210 and a sound suppression unit 220. The main body 210 has a function of sounding when a drive voltage is applied from the outside, which corresponds to a function that has conventionally been provided in acoustic devices.

[0030] On the other hand, the sound suppression unit 220 is installed to cover the main body unit 210 when a sound test is performed, and has the function of suppressing the volume of sound generated when the main body unit 210 sounds, which corresponds to a characteristic function of the acoustic device according to this embodiment 1.

[0031] Main body 210 includes motor 211, sounding mechanism 212, and sounding unit 213, and is installed on wall 1 or the like. When a drive voltage is applied to motor 211 from the outside, sounding mechanism 212 is driven, causing sounding unit 213 to vibrate and sound. In the configuration of FIG. 1, a drive voltage is applied to motor 211 from fire control panel 10.

[0032] For example, sounding mechanism 212 has a gear and a striking part, and the striking part is driven by the operation of motor 211, and when the striking part strikes a gong that is sounding part 213, sounding part 213 is vibrated and produces sound. Furthermore, acoustic device 200 according to the first embodiment includes sound suppression part 220 that suppresses the volume of sound generated when sounding part 213 produces sound.

[0033] The sounding unit 213 is made of, for example, an aluminum alloy. The sounding mechanism 212 strikes the sounding unit 213 at regular intervals to vibrate the sounding unit, thereby producing sound.

[0034] The rumbling suppression unit 220 includes a sound deadening material 221 and an operation check circuit 222. As shown in FIG.

[0035] When conducting a ringing test, ringing suppression unit 220 is installed so as to cover main body unit 210, and as a result, ringing unit 213 and sound-deadening material 221 come into direct contact with each other. Fig. 2(A) shows a state in which ringing suppression unit 220 is installed so as to cover main body unit 210, and Fig. 2(B) shows a state before ringing suppression unit 220 is installed on main body unit 210.

[0036] The sound deadening material 221 serves to suppress vibration of the sound-generating part, and vibration absorbing materials such as urethane, silicone, and rubber can be used as the sound deadening material.

[0037] Operation check circuit 222 includes storage unit 222a and determination unit 222b. Determination unit 222b has a sensor that is placed so as to be in direct contact with sounding unit 213 when sounding mechanism 212 is activated, and is capable of measuring impact energy caused by vibration of sounding unit 213. An impact sensor, an acceleration sensor, or the like can be used as this sensor.

[0038] It is stipulated by law that the acoustic device 200 must meet volume standards. Whether the acoustic device 200 meets these volume standards is confirmed when the acoustic device 200 is shipped or when the acoustic device 200 is installed on-site.

[0039] Therefore, in a state where it has been confirmed in advance that the volume standard is satisfied, the impact energy can be measured by the sensor of the determination unit 222b with the sound suppression unit 220 installed so as to cover the main body unit 210. Furthermore, the reference level can be set based on the impact energy measured in this manner.

[0040] The set reference level is stored in advance in the storage unit 222a. Specifically, the reference level, which is a value obtained by converting impact energy into sound pressure and which corresponds to a level that satisfies the volume standard stipulated by law, can be stored in the storage unit 222a.

[0041] Then, determination unit 222b obtains, as a measurement value, a sound pressure converted from the impact energy measured by the sensor when a sound test is performed with sound suppression unit 220 installed to cover main body unit 210. Furthermore, determination unit 222b compares the measurement value with a reference level stored in memory unit 222a.

[0042] If the comparison result indicates that the sound pressure measured during the sound test is equal to or greater than the reference level, the determining unit 222b determines that the main body 210 is normal and that the sound is being emitted at a level that satisfies the law.

[0043] On the other hand, if the comparison result shows that the sound pressure measured during the sound test is less than the reference level, the determining unit 222b determines that the main body unit 210 is abnormal and is not sounding at a level that satisfies the law.

[0044] That is, the operation checking circuit 222 determines whether the main body 210 is normal or not based on the magnitude of the impact energy during the ringing test. Then, the determining section 222b outputs the determination result.

[0045] For example, the determination unit 222b can transmit the determination result to the fire control panel 10. The determination unit 222b can also transmit the determination result to a mobile terminal carried by the inspector.

[0046] Next, a series of processes for a sound test that an inspector performs using the acoustic device 200 according to the present disclosure will be described using a flowchart. Fig. 4 is a flowchart showing a series of processes related to the sound confirmation method for the acoustic device 200 according to the first embodiment of the present disclosure.

[0047] First, in step S401, when the acoustic device 200 is shipped or when the acoustic device 200 is installed on-site, the inspector confirms that the main body 210 meets the volume standards set by law, and then installs the sound suppression unit 220 to cover the main body 210, and stores the reference level determined by the judgment unit 222b in the memory unit 222a.

[0048] Note that an inspector can manually press main body 210 against rumbling suppression unit 220 to install rumbling suppression unit 220 so as to cover main body 210. It is also possible to provide a mechanism that allows rumbling suppression unit 220 to be attached and detached to main body 210.

[0049] Next, in step S402, the inspector measures the impact energy with the determining unit 222b in a state where the sound suppressing unit 220 is attached to the main body unit 210 at a desired timing when the sound test is to be performed.

[0050] Next, in step S403, the inspector obtains from the determining unit 222b an output of a determination result based on the comparison process between the reference level in step S401 and the measured value in step S402, and thereby determines whether the sound test is successful.

[0051] As described above, according to the first embodiment, a sound test of the audio device can be performed with the main body covered by the sound suppression unit, and it can be easily determined whether the sound meets the volume standards stipulated by law. As a result, the sound test can be performed with the volume generated by the audio device suppressed, and time constraints when performing the sound test can be alleviated.

[0052] In a typical automatic fire alarm system such as that shown in Figure 1, a drive voltage is applied from the fire receiver to all sound devices in the same area that are connected to the same line, causing all sound devices in the same area to sound simultaneously.

[0053] Therefore, it is conceivable to assign a unique address to each sound device and individually control each sound device from the fire alarm receiver, thereby configuring the device so that only the desired sound device sounds. In this case, the inspector can install a sound suppression unit on the main body of the desired sound device and perform a sound test based on the individual control from the fire alarm receiver.

[0054] In the first embodiment, the case where ringing suppression unit 220 is installed so as to cover main body unit 210 as shown in Fig. 2 has been described, but the installation of ringing suppression unit 220 is not limited to Fig. 2. When performing a ringing test, ringing suppression unit 220 can also be installed so as to come into contact with ringing unit 213, thereby achieving the function of suppressing the volume of sound generated when main body unit 210 rings.

[0055] For example, if it is desired to suppress the vibrations that occur when the striking part of the sounding mechanism 212 strikes the gong that is the sounding part 213, it is possible to install the sound suppression part 220 so that it comes into contact with the part of the sounding part 213 that corresponds to the point where the gong strikes.

[0056] Furthermore, instead of manually setting the rumble suppression unit 220 when performing a rumble test, it is also possible to adopt a configuration in which the rumble suppression unit 220 is automatically set to contact the rumble unit 213 in response to an external signal indicating that a rumble test is to be performed. [Explanation of symbols]

[0057] 61, 62, 71, 72, 200 acoustic device, 210 main body, 211 motor, 212 sound mechanism, 213 sound unit, 220 sound suppression unit, 221 sound-deadening material, 222 operation confirmation circuit, 222a memory unit, 222b determination unit, 223 case.

Claims

1. An acoustic device comprising: a main body having a motor, a sounding unit, and a sounding mechanism; wherein the sounding mechanism is driven by applying a drive voltage to the motor from an external source, and the sounding unit vibrates to produce a sound; Further, a sound suppressing unit is provided which is arranged to come into contact with the sounding unit when a sound test is performed by checking sound generation, the sound suppressing unit includes a sound-deadening material that suppresses vibration of the sounding unit when the sounding mechanism is driven, It is possible to check for disconnection or operational abnormalities by sound while suppressing the volume. sound equipment.

2. An acoustic device comprising: a main body having a motor, a sounding unit, and a sounding mechanism; wherein the sounding mechanism is driven by applying a drive voltage to the motor from an external source, and the sounding unit vibrates to produce a sound; Further, a sound suppressing unit is provided which is arranged to come into contact with the sound generating unit when a sound test is performed, the sound suppressing unit includes a sound-deadening material that suppresses vibration of the sounding unit when the sounding mechanism is driven, The sound suppression unit is capable of measuring impact energy caused by vibration of the sound suppression unit when the sound suppression mechanism is activated, and an operation confirmation circuit is configured to determine whether the main body unit is normal or not based on the magnitude of the impact energy. The sound device further comprises:

3. The rumble suppressor is automatically set to contact the rumble unit upon an external signal indicating that a rumble test is to be performed.

3. The acoustic device according to claim 1 or 2.

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