JP3168921U - Sound alarm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a voice alarm device which can deal with a large number of danger factors by one unit and has a small and high sound pressure level alarm function while targeting all persons approaching the danger factors. SOLUTION: This is a voice alarm device that issues a caution word to a person approaching a risk factor at a work site to alert the person, and uses a sensor, a microphone for inputting the caution word, and a caution word input from the microphone. It includes a memory for recording, a speaker for reproducing the caution word, and a control unit for controlling the recording of the caution word in the memory and controlling the reproduction of the caution word recorded in the memory in response to the sensor. [Selection diagram] Fig. 1

Description

  The present invention relates to an audio alarm.

  In general, workers are working close to risk factors at construction sites, and the risk factors are contact between heavy work equipment and workers, falling / falling from openings and high places, charging / heating There are a wide variety of things such as contact between the body and workers. In such an on-site environment, the most common practice to protect workers and third parties approaching the workplace from disasters is to place a monitor and monitor the risk factors and the approach of the worker, It is a way to call attention.

  However, monitoring by a supervisor relies on human attention, and many supplementary voice alarms and auxiliary voice alarms have been developed and operated to supplement this.

  For example, an “approach warning system” has been proposed (see, for example, Patent Document 1). This means that a worker approaching the heavy work machine and another worker who operates the heavy work machine carry a voice alarm with an approach warning function and a telephone call function, and exchange cautions and instructions with each other as they approach. This is an intended audio alarm.

  In addition, “fire alarm with sound function” and “fire alarm for home” have been proposed (see, for example, Patent Document 2 and Patent Document 3). These are voice alarms for the purpose of alerting by voice, for the purpose of fire alarm, and sound alarms that can give appropriate instructions and alerts by alerting them with content appropriate for the installation location. Therefore, this technology can be easily transferred to the construction site.

JP 7-168987 A JP 2008-234086 A JP 2008-225609 A

  However, the “approach warning system” of Patent Document 1 described above requires carrying a sound alarm device, and there is a problem that the danger cannot be avoided when a worker who does not carry the sound alarm device enters the work area. . Further, the “fire alarm with sound function” in Patent Document 2 and the “fire alarm for residential use” in Patent Document 3 have a higher sound pressure level than site noise (for example, 75 decibels) for diverting to a construction site. There is a need for modification such as changing the speaker to a larger one, or increasing the capacity of the voice amplifier, so that the voice alarm device becomes larger and expensive.

  In addition, as described at the beginning, there are a wide variety of risk factors lurking on site, and it is necessary to reproduce appropriate word of warning for each risk factor in order to call attention. However, in the examples shown in the above-mentioned Patent Documents 1 to 3, there is a problem that a warning wording adapted to the application site situation cannot be recorded at the application site.

  The present invention has been made to solve the above-described problems, and is intended for alerting all persons approaching the risk factor, and can handle a large number of risk factors with a single unit. The purpose is to provide an audio alarm having a high pressure level alarm function at low cost.

  In order to solve the above-mentioned problems, the audio alarm device according to the present invention is an audio alarm device that alerts a person who approaches a risk factor at a work site by alerting a warning word. A microphone for inputting a word, a memory for recording a caution word input from the microphone, a speaker for reproducing the caution word, and recording of the caution word in the memory, and in response to the sensor in the memory And a control unit for controlling reproduction of the recorded caution wording.

  According to the present invention, it is possible to alert all persons approaching a risk factor and to issue a variety of caution statements. can do. Further, it is possible to provide a sound alarm device having a high sound pressure level even though it is small.

It is a block diagram which shows the structure of the audio | voice alarm device which concerns on embodiment. It is a structural diagram of a sound alarm device according to an embodiment. It is a structure figure which attached the sensor cover to the voice alarm device concerning an embodiment. It is a structure figure of the sensor cover concerning an embodiment. It is other embodiment of the sensor cover which concerns on embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a sound alarm device according to an embodiment of the present invention. As shown in FIG. 1, the sound alarm device 1 includes a power supply unit 2, a control unit 3, a sensor 4, a speaker 5, a microphone 6, a power switch 7, and a recording switch 8. Each unit other than the control unit 3 is electrically connected to the control unit 3. The control unit 3 has a built-in memory function. The sound alarm device 1 is used, for example, for securing safety at a construction site, and is installed on a barricade provided at an opening or the like of the construction site, or on the back of a door such as a power panel. The sound alarm device 1 can be roughly classified into, for example, an indoor specification type installed indoors and an outdoor specification type installed outdoors.

  For indoor specifications, if the lighting equipment is not installed at the construction site, the light detection sensor that reacts to the light of the headlights attached to the helmet worn by the worker, A human sensor corresponding to the pyroelectric infrared sensor for detecting approaching is incorporated. For indoor specifications, for example, it is sufficient to output a sound pressure level of 80 dB.

  For the outdoor type, it is sufficient to output a sound pressure level of 90 decibels, for example, as a sound pressure level that can withstand the noise at the construction site while being subjected to rainproof treatment.

  FIG. 2 is a structural diagram of the sound alarm device 1 according to the embodiment, FIG. 2 (a) is a front view, FIG. 2 (b) is a side view, FIG. 2 (c) is a top view, and FIG. It is a sectional side view.

  The power supply unit 2 is a drive power supply for the sound alarm device 1 and includes, for example, an alkaline battery. If the voice alarm device 1 is in a standby state without frequently issuing warning messages (described later), it is power consumption of microamperes and can be used for several years.

  The control unit 3 is a control board having a recording / playback function, and has a built-in memory for storing recorded voice data.

  The sensor 4 detects a change in the environment in which the sound alarm device 1 is installed, and is attached outwardly to the front surface of the sound alarm device 1.

  The speaker 5 is attached to the front of the sound alarm device 1 so as to emit a sound alarm, and is protected from the external environment by a speaker cover 11.

  The microphone 6, the power switch 7, and the recording switch 8 are attached to the upper surface of the sound alarm device 1 so that they can be operated from the outside.

  The resonance tube 10 is firmly fixed to the speaker 5, and is fixed to the housing 9 with a gap 13 of about 1 mm between the inner surface of the housing 9.

  The attachment hook 12 is fixed to the back surface of the sound alarm device 1.

  3 is a structural diagram in which a sensor cover 14 is attached to the sensor 4 of the sound alarm device 1 according to the embodiment. FIG. 4 (a) is a front view of the sensor cover, FIG. 4 (b) is a side view, and FIG. c) is a sectional side view.

  The sensor cover 14 is a stretchable cap that is partially slitted, and has a shape that covers the sensor. The sensor cover 14 is closely attached to the sensor by its stretchability, and can be arbitrarily attached and detached.

  FIGS. 5A and 5B are structural views of another embodiment of the sensor cover 14 according to the embodiment. FIG. 5A is a diagram showing a plurality of slits, and FIG.

(Function / Function)
Next, the operation and function of the sound alarm device 1 configured as described above will be described.

  The power switch 7 has a three-position switching function of “OFF”, “recording”, and “playback”. When recording a warning message for uttering from the voice alarm device 1, the power switch 7 is set to “recording”, the recording switch 8 is pressed, and the voice input from the microphone 6 is recorded in the memory of the control unit 3. Examples of caution statements include “Please be careful about the opening”, “Be careful of electric shock”, “Use the high altitude safety zone”, and the like. In the audio alarm device according to the present embodiment, the caution wording can be easily changed / added according to the installation location. In order not to be distracted by the wording of caution, it is preferable that the same content is recovered 3 times and the length is about 10 seconds.

  When the caution word is reproduced, the power switch 7 is set to “reproduce”, and when the sensor 4 detects a change in the external environment, the caution word recorded in the memory of the control unit 3 is reproduced by the speaker 5. The sound alarm device 1 according to the present embodiment does not use a volume for adjusting the sound pressure level. This is to prevent the caution wording from being reproduced at a low sound pressure level that cannot be heard due to an erroneous operation.

  The change in the external environment detected by the sensor 4 is, for example, when a human sensor is employed, detects the movement of a person approaching the sound alarm 1 and issues an alarm. For example, when a light detection sensor is employed, a sound alarm is detected. The light and darkness of the place where the device 1 is installed is detected and an alarm is issued.

  The sensor cover 14 has a function of suppressing the detection range of the sensor 4. For example, when a human sensor is employed as the sensor 4, a wide range of detection is possible with the human sensor's detection range conical shape, but when an operator works within the detection range of the human sensor, There is an annoyance of detecting a worker's movement and issuing an alarm continuously. The sensor cover 14 is intended to suppress this phenomenon. By mounting the sensor cover 14 provided with the slits 15, the sensor detection range is limited as shown in FIG. To restrict.

  In the embodiment of FIG. 3, the detection range of the sensor is limited when the number of slits 15 is one. However, when the detection range is widened, a plurality of slits 15 are provided or the slits 15 are fan-shaped. The detection range can be adjusted by changing the shape of the slit 1.

  The resonance tube 10 has a function of amplifying the reproduction capability of the speaker 5. Specifically, the sound pressure change (vibration = sound) generated on the back surface of the speaker 5 is derived to the front of the sound alarm device 1 through the gap 13 and the inner wall of the housing. When there is no gap 13, that is, when the resonance tube 10 is in close contact with the inner surface of the housing, the sound pressure change generated on the back surface of the speaker 5 is confined inside the resonance tube 10 and the amplification function does not work. On the other hand, if the gap 13 is large, the sound pressure change on the back surface diffuses and the amplification function does not work.

  The size of the gap 13 is preferably 1 to 2 mm at a human voice frequency (500 to 2000 Hz).

  The mounting hook 12 is used when the sound alarm 1 is installed. When the mounting hook 12 cannot be directly hooked, a wire or a magic tape (registered trademark) is passed through the mounting hook 12 to fix the sound alarm 1. To do.

  According to the present embodiment, all persons approaching the risk factor can be targeted for alerting and various caution words can be issued. In addition, it is possible to call attention that can deal with various risk factors with a single unit. In addition, a small-sized sound alarm with a high sound pressure level can be obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the device. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims of the utility model registration and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 1 ... Sound alarm device 2 ... Power supply part 3 ... Control part 4 ... Sensor 5 ... Speaker 6 ... Microphone 7 ... Power switch 8 ... Recording switch 9 ... Case 10 ... Resonance tube 11 ... Speaker cover 12 ... Mounting hook 13 ... Gap 14 ... Sensor cover 15 ... Slit

Claims (8)

A voice alarm that alerts and alerts people who are approaching a risk factor at the work site,
A sensor,
A microphone to input caution words,
A memory for recording a word of caution input from the microphone;
A speaker that plays the caution statement,
A controller that controls recording of the caution text in the memory and controls reproduction of the caution text recorded in the memory in response to the sensor;
Voice alarm device with.   The voice alarm device according to claim 1, further comprising a power switch and a recording switch for operating the microphone.   The sound alarm device according to claim 1, wherein the battery is a driving power source.   The sound alarm device according to claim 1, wherein a resonance tube is interposed on the back surface of the speaker.   The sound alarm device according to claim 1, wherein a gap is provided between the casing for housing the sound alarm device and the resonance tube.   6. The sound alarm device according to claim 1, wherein the sensor is a human sensor corresponding to a pyroelectric infrared sensor.   The sound alarm device according to claim 6, wherein the sensor is provided with a sensor cover with a slit.   6. The sound alarm device according to claim 1, wherein the sensor is a light detection sensor.

Images