Background technology
In recent years, maldevelopment children's existence has obtained social concern more and more, in growing handicapped child, the children that much are difficult to regulate according to situation sound size (volume) is arranged.For example, on the classroom or under the first-class situation that should keep quite of whole school rally, this type children unconsciously send sometimes loudly.
For this reason, on-the-spot in education in the past, used to be used to instruct loud little " sound index " as paper medium teaching material.This teaching material is that the volume of using in the daily life roughly is divided into the paper medium publication that 3~5 grades are represented.For example, substantially with following criteria classification: 1, the sound of secret words; Sound when 2, two people speak; Sound when 3, in group, speaking; 4, the sound when everybody speaks in class; Sound when 5, on the playground, playing.
At the scene, should " sound index " to be suspended to blackboard first-class, let children read aloud textbook then, when the sound of reading aloud as children was big, teacher can make guidance, as " you read aloud with sound 4, and a little bit smaller a little sound 3 of usefulness is read.", thereby let the maldevelopment children obtain to grasp the sensation of volume control.
But, be somebody's turn to do " sound index " when instructing in use, the teacher just subjectively estimates children's volume, and the benchmark of expression sound size is indeterminate.In addition, maldevelopment children self can't judge the volume of estimating oneself.
On the other hand, for example in following patent documentation 1, disclose a kind of to volumes such as noise measure and with volume with the volume analyzer (noisemeter) represented of decibel (dB) unit, it still is widely used up to now.If use the volume analyzer, then can measure volume quantitatively.
Patent documentation 1: real the opening of Japan put down the 5-90336 communique
Yet, even if use the volume analyzer, representing volume with the numerical value of decibel unit, maldevelopment children only see numerical value can't judge still whether the volume of oneself is suitable, are difficult to let the maldevelopment children grasp the sensation of volume control.In addition, the volume analyzer costs an arm and a leg, and is difficult in the on-the-spot use of education.
Embodiment
Below, at length explain with regard to the embodiment of the utility model with reference to accompanying drawing.Fig. 1 is the stereoscopic figure of the volume display device of this embodiment; Fig. 2 is the block diagram of circuit structure that the volume display device of this embodiment is shown.
Volume display device 1 comprises cabinet 5, microphone 10, control circuit 11, power switch 13 and eight LED15.Cabinet 5 is plastic cuboid housing, and its set inside has microphone 10 and control circuit 11.
Front surface at cabinet 5 is formed with the continuant orifice 6 that is used for microphone 10, and is drawing three width of cloth illustrations (illustrate) 7 that are used for explaining volume understandablely.Illustration 7-1 representes that sound less being difficult for hear; Illustration 7-2 representes that the sound size is just in time suitable; Illustration 7-3 representes that sound is excessive.These illustrations 7 can with after the number of lighting a lamp of the LED15 that states let the maldevelopment children understand the size of own sound understandablely.
Microphone 10 is set at the inside of cabinet 5 in the inboard of continuant orifice 6, and microphone 10 obtains acoustic pressure and is converted into electric signal.Control circuit 11 is connected with microphone 10, power switch 13 and eight LED15; Control circuit 11 is to control with the mode of lighting the LED15 of predetermined number through microphone 10 detected volumes accordingly.
In control circuit 11, each LED15 set make its luminous benchmark, promptly set volume.And control circuit 11 is controlled as follows: set volume when above when the input volume that detects through microphone 10 input for it, the relay that connection is connected with this LED15 is lit a lamp this LED15.As control circuit 11, for example, can transform and use the noise size relay external member (UR-S1) of WONDER KIT company or the compact audio level measuring set external member (Compact Level Meter Kit SK-LV39) of SILICON HOUSE company.
In addition, control circuit 11 constitutes: after detecting the setting volume, make relay connect the time (timer setting-up time) that is set by timer, connected LED15 is lit a lamp.In this embodiment, the random time in the scope that can the timer setting-up time be set at 1~11 second.For example, can be set at 2 seconds.But if just when luminous, detecting the setting volume once more, then set the timer setting-up time once more, fluorescent lifetime prolongs.
Like this, not only detecting when setting volume, set volume and still make LED continue to light the stipulated time later on detecting, thereby the maldevelopment children can confirm the size of sound at leisure, positively discern.In addition, because the timer setting-up time when long, is difficult to differentiate when one's voice in speech is big, so preferably be located at this timer setting-up time more than 1 second and in 20 seconds.
Power switch 13 is to be used for the power supply of volume display device 1 is carried out open/close push-button switch.Through pushing this power switch 13, can carry out on/off switch.
LED15 is made up of eight illuminated components of a LED15-1~the 8th LED15-8, and these eight illuminated components become delegation from the mode of the front surface of cabinet 5 protrusion at the front surface horizontally-arranged of cabinet 5 with its illuminating part.From the left of Fig. 1, a LED15-1~the 5th LED15-5 is a green LED 15; The 6th LED15-6~the 8th LED15-8 is a red LED 15.LED15-1~LED15-8 is Be Controlled circuit 11 control of lighting a lamp independently respectively.
Then, with reference to accompanying drawing 3, be elaborated with regard to the control method of control circuit 11.Fig. 3 be illustrated in set in the control circuit 11 of above-mentioned embodiment, as the figure of the setting volume of the benchmark that each LED15 is lit a lamp.The number of last represents LED15; The setting volume x (dB) that each LED lit a lamp of following represents LED15-1~LED15-8.
As shown in the drawing, a LED15-1 power switch 13 be pressed and make device power connection during continue to light a lamp.The 2nd LED15-2 is controlled so as to, and lights a lamp when above when the input volume x through microphone 10 input reaches 66dB.Likewise, the 3rd LED15-3, the 4th LED15-4, the 5th LED15-5 are controlled so as to respectively when importing volume x and reach more than the 72dB, more than the 78dB respectively, light a lamp when 84dB is above.
In addition, the 6th LED15-6, the 7th LED15-7, the 8th LED15-8 be controlled so as to respectively when input volume x reach more than the 90dB, more than the 96dB, light a lamp when 102dB is above.That is, along with volume becomes big, the quantity of lighting a lamp of LED15 will increase on the right side in figure successively.
At this, as the style standard of general noise, if 40dB just is considered to quiet (residential area of library, quietness); If 50dB just is considered to general (quietly office); If 60dB, just be considered to mind a little (quietly automobile, general session); If 70dB just is considered to make a lot of noise (agency of telephone bell, noise, the street corner of noise); If 80dB, just be considered to suitable noise (in the compartment of subway, the road on daytime, the cry of cicada); If 90dB, (in the loudspeaker of election contest car, the noisy factory, make a racket) just is considered to make a lot of noise very much; If 100dB just is considered to the noise (below the overpass when train passes through) that agonizes.
Therefore, in this embodiment, think that the sound size during as speech in the classroom is proper, so adopted the structure that LED15 is lit a lamp with above-mentioned setting volume when giving great volume when being about 66~84dB with microphone 10 is detected.
In addition, as shown in Figure 1, a LED15-1 is positioned at the top of the less illustration 7-1 of expression sound, and the 4th LED15-4 is positioned at the top of the just in time suitable illustration 7-2 of expression sound, and the 7th LED15-7 is positioned at the top of the bigger illustration 7-3 of expression sound.
Thus, seeing the people of volume display device 1, can when having only a LED15-1 to light a lamp, recognize that sound is less, recognizing when near the 5th LED15-5, all lighting a lamp that sound is just in time suitable, when near the 7th LED15-7, all lighting a lamp, recognizing that sound is excessive.In addition, the 6th~the 8th LED15-6~8th, red LED through lighting up as redness, more vision recognizes that sound is excessive.
More than, the structure of the volume display device 1 of relevant this embodiment at length has been described, then, describe with regard to the use-pattern of volume display device 1.In this embodiment, with regard to the maldevelopment children volume display device 1 is placed on situation about using on the desk in the classroom and describes.
Suppose volume display device 1 is placed on from the distance of the about 50cm of mouth and use, on desk, volume display device 1 be placed on from the children's that take one's seat the about 50cm of face apart from part, press power switch 13, energized.
Under this state, when children spoke, its sound was input to volume display device 1 through microphone 10, and according to the size of this sound (volume), control circuit 11 makes the LED15 of regulation number luminous.
For example, suppose that sound is less, when volume was 60dB, with reference to setting volume shown in Figure 3,60dB did not surpass the setting volume of any LED15, so control circuit 11 only makes a green LED15-1 light a lamp.At this moment, when children confirm volume display device 1, find to have only a LED15 to light a lamp,, can recognize that the sound of oneself is less through watching the illustration 7-1 that is positioned at the LED15-1 below that lights a lamp.
In addition; Suppose that sound is bigger; When volume is 100dB, because 100dB has surpassed the setting volume of second~the 7th LED15-2~15-7, so control circuit 11 is lit a lamp first to the 5th LED15-1 green~15-5 and red the 6th and the 7th LED15-6,15-7.At this moment, when children confirm volume display device 1, find that red LED15 has also lit a lamp,, can recognize that the sound of oneself is excessive through watching the illustration 7-3 that is positioned at the 7th LED15-7 below that lights a lamp.
More than, specify with regard to volume display device 1.According to this embodiment, through the quantity of lighting a lamp, color and the illustration 7 of LED15, can show understandablely whether the size of volume is suitable, and children need not to rely on teacher etc. to the maldevelopment children are real-time, can own learning and mastering suitable volume.
In addition, be small-sized because constitute the member of volume display device 1, and can obtain, so can show understandablely whether volume is suitable, and educational institution and family etc. can buy and use easily through small-sized and cheap device with low price.
More than, though done explanation at length with regard to this embodiment, the utility model is not limited to above-mentioned embodiment, can in the scope of the technological thought that does not break away from the utility model, carry out various distortion.The change that for example, can suit to the quantity of LED or illustration.But,, the LED more than three is set at least preferably in order to show the appropriateness of volume.
In addition, in the above-described embodiment,, also can adopt other illuminated components such as incandescent lamp bulb though adopted LED (light emitting diode) as illuminated component.