CN2072398U - Sound sensor for deaf-mutes - Google Patents

Abstract

The utility model relates to a sound sensor for deaf-mutes. The sound sensor for deaf-mutes converts the exterior sound information into the electric stimulation by means of scoustoelectric sensing elements, and therefore, the deaf-mutes can receive specific information transferred from outside, such as the sound of knocking door, crying, chirping of the vehicle, etc. The specific structure of the sound sensor for deaf-mutes comprises scoustoelectric switching elements, an audio amplifier, an output regulator, and an output electrode contacting with the skin. The entire machine can be made into a convenient portable watch type and girded on the wrist of the deaf-mutes. The sound sensor for deaf-mutes solves a plurality of living difficulties brought to the deaf-mutes because of the ineffective transfer of audio information and prevents the happening of the hazardous events.

Description

Sound sensor for deaf-mutes

This utility model belongs to a kind of pickoff, specifically a kind ofly sound wave is converted into electrical stimulation signal helps the deaf mute to debate the information sensor of other external sound signal.

Owing to lost audition, the various information that the deaf mute can't received audio signal transmits.Thereby with the normal person and the society each contacts in cause very big difficulty.Though, can transmit information by hands formula sign language between the deaf mute, some specific occasions makes between them also can't transmit information.For example, when I have a visit from a guest,, the deaf mute also can't pass to the deaf mute who has a rest to the client just at home to the information on doorway even knowing sign language.Have, deaf mute's children much are the normal persons again, but the crying of baby, falling of child all can't be passed to disabled father and mother by sound, say nothing of to resemble kettle and opened, and pot has overflow or the like and to be starved of the urgency signal of handling immediately and also can't to pass to them.Certainly, resemble the loudspeaker warning or the like of going out and do not hear and tend to cause unexpected accident, then even more serious.In order to overcome above defective, inventors once designed the resonant sonifer of skull, but complex structure costs an arm and a leg, and carried inconvenience, and the training of language impression can be grasped in also non-one day.Also the someone has designed flash door bell, and it is visiting to report the guest with optical signal, but the deaf mute can not guarantee again can see signal at any time, and other signal is then more had no way out.At present, the easy deaf mute's information transfer device of a kind of convenience still is a blank.

The purpose of this utility model is to design a kind of simple in structure, and using easily, the deaf mute uses sound transducer.It can be converted into external audio information the electrical stimulation signal that the deaf mute feels and directly be received by the deaf mute, and can offer an explanation out the information that different audio signals includes.

Crucial design of the present utility model is to design an acoustic-electric conversion equipment, and acoustical signal is converted into regular electrical stimulation signal.Again this signal is directly acted on deaf mute's skin sensitivity position, make electrical stimulation signal can reflect the characteristic of different audio signals truly, like this through simple contrast training, the deaf mute just can distinguish different audio signals according to the characteristics of electricity irritation, receives the purpose that external audio transmits information thereby reach.For realizing above crucial design.The designed device of this utility model comprises an acoustic-electric conversion element, for example miniature microphone in the machine, piezoelectric crystal plate or an audio-switch.Utilize it extraneous audio signal to be converted to the electric signal of variation.For making that obtaining enough big electric signal feels with chafe, also designing in this device has audio frequency amplifier, and its electric signal is amplified to a certain degree, to reach practical purpose.Also design has an output controller simultaneously, its electrical stimulation signal boosted voltage amplitude of amplifying and scalable to adapt to different people, different skin resistance adaptability to electrical stimulation signal.Its electrical stimulation signal that regulates is added on deaf mute's the skin by a pair of output electrode, after the external audio signal produces, promptly producing on deaf mute's skin by this counter electrode has the electricity irritation of corresponding rhythm and intensity, thereby the deaf mute is judged rightly and handles the affairs that should do.Whole device comprises cell integrated being assembled among the portable shell, can be carried on one's body or be fixed in a certain position of health easily, and the electrode that sets can receive the audio-frequency information that the external world is transmitted easily.

How further specify the purpose of this utility model below with reference to the accompanying drawings realizes.

Fig. 1 is a structural design drawing of the present utility model.

Fig. 2 is the electrical schematic diagram of illustrated embodiment.

Fig. 3 is expression enclosure designs figure.

Wherein 1 represent acoustic-electric conversion element, 2 represent audio frequency amplifier, and 3 represent output controller, and 4 represent output electrode, and 5 represent battery, and 6 represent shell.

As can be seen, what acoustic-electric conversion element 1 was adopted can be a miniature microphone in the machine from accompanying drawing, is arranged on the signal input position of audio frequency amplifier.Audio frequency amplifier is one three grades resistance-capacitance coupling formula voltage amplifier circuits in the embodiment that provides.Respectively by three transistor (BG1.BG2, BG3) form.Inter-stage adopts the resistance-capacitance coupling formula to connect, and designs each inter-stage negative-feedback circuit to reduce linear distortion and stabilizing amplifier operating point.The amplifying circuit of afterbody as load, improves output voltage with the former limit of output transformer winding.Output controller 3 comprises that marginal winding of transformator and output energy adjustment potentiometer W1 form.Regulate W1 can adapt to the different skin impedance and reach the output of suitable electrical stimulation signal.Electrical stimulation signal by the marginal output of transformator is arranged on the more sensitive skin part of deaf mute by means of two conductive rubber slices, thereby the signal of telecommunication of audio conversion is passed to the deaf mute.

Fig. 3 has provided a kind of sketch map of watch-type portable enclosure designs.Overall structure can be provided with among the watchcase, can adopt efficient smee cell to do power supply.Two one of conductive rubber slabs can be arranged on watchcase bottom surface (A), and another piece (B) can be arranged on the watchband, and relative two sides form pair of electrodes output at the wrist position.Can directly wear on wrist during application, when adopting the tabular form structure, three-stage amplifier can adopt an integrated circuit slice, thin piece substitute with reduced volume make should use convenient.Portable enclosure also can adopt cigarette case size and shape, adopt layer-built battery, conductive rubber slab can utilize Pressure sensitive adhesive tape to be fixed on a certain position of health, though such structure is convenient not as watch style, but because of the popular battery capacity of its structure big, it is comparatively reasonable to use the ratio of performance to price, the design of a kind of practicality of can yet be regarded as.A LED 1 is arranged among the given embodiment, its can be along with the input of audio signal corresponding flashing, can play the assosting effect that signal transmits.

Deaf mute's sound transducer of making according to above basic design, wear on one's body the deaf mute, after better simply corresponding training, deaf and dumbly can set up contact to the pairing audio-frequency information of different electrical stimulation signals is very fast, particularly at home, be under the quiet environment on every side, suitably adjust the sensitivity (W2) of high complete machine, can be easy to receive tap-tap, electric bell sound, vagitus and other sound, make a response very soon, thereby it will become the competent assistant of deaf mute's daily life.When suitably turning down sensitivity when going out, then can in noisy environment, debate other honk, the bicycle the tinkle of bells, people's cry or warning, thus become a kind of instrument of deaf mute's indispensability.

Claims (7)

1, a kind of deaf mute uses sound transducer, it is characterized in that comprising in this sensor construction that by sound-electricity conversion device 1, audio frequency amplifier 2, output controller 3, output electrode 4, battery 5 overall package are among a portable enclosure 6.

2, sound transducer according to claim 1 is characterized in that acoustic-electric conversion element 1 can adopt miniature microphone in the machine, piezoquartz or control switch.

3, according to the said sound transducer of claim 1, it is characterized in that audio frequency amplifier 2 has adopted 3 grades of low-frequency amplifier circuits, specifically can adopt three transistors (BG1, BG2, BG3) to form voltage amplifier circuit, inter-stage adopts resistance-capacitance coupling.

4,, it is characterized in that said output controller 3 transformators are paid the limit and adjustable resistance W1 forms according to the sound transducer of claim 1.

5, according to the said sound transducer of claim 1, it is characterized in that said output electrode 4 is two conductive rubber sheets, the limit of paying with transformator links respectively, is arranged on the skin site of deaf mute's sensitivity during application.

6,, it is characterized in that portable enclosure 6 can become the wrist-watch pattern, directly wears on wrist according to the said sound transducer of claim 1.

7, according to claim 1 or 6 said sound transducers, it is characterized in that output electrode 4 is that two conductive rubber slices (A, B) link to each other with transformator is marginal, a slice A is arranged on the watchcase bottom surface, and another sheet B is arranged on a watchband inboard, can contact the wrist two sides respectively when wearing.