RU194685U1 - Induction Field Shaper - Google Patents

Abstract

The utility model relates to transmitting systems using the near field antenna, namely with inductive coupling. The induction field shaper provides the possibility of its simultaneous use as an induction emitter for communication at sound frequencies, and as a stand informing about a place for wireless communication with the user's hearing aid, simplifying the process of finding and implementing wireless communications. The inductor field shaper is simpler and less demanding on the element base. The induction field shaper contains a spiral of a tape conductor located on a dielectric flat base, the base being a rectangular plate of a printed circuit board with an area of 0.03 to 2.0 m, on the outer side of which is printed information about the presence of an induction loop for hearing aids, and on the inside there are spiral leads for connecting them to the outputs of the audio frequency amplifier, while the spiral is made in the form of a single printed conductor with a thickness of 0.5 to 2.0 mm, a width of 1.0 to 100 m with the number of turns of 4 to 40. ZP f-ly, 6 ill.

Description

Technical field

The invention relates to transmitting systems using the near field antenna field, namely with inductive coupling, and can be used in wireless communication systems with a hearing aid.

State of the art

A known radio microphone transmitter for persons with hearing and speech impairment, comprising a housing with a cover made in the form of a rectangular prism by molding, a switch is installed on the front side of the cover of the operating frequency of the transmitter, an antenna is made in the hole in the housing, made of flexible material, the end of which is through the installation the unit, made by molding in one piece with the housing, is connected to a microcircuit located in the housing and including interconnected antenna contact, FM transceiver, channel selector, under the power controller connected to the FM transceiver with contacts for the battery, charge, charge / discharge indication and a contact for the switch, and a matching circuit connected through the contacts of the microphone input and line input, with the contact for connecting an external microphone (see RU 179098 U1) .

A disadvantage of the known device is its complexity, due to the use of a radio channel for transmitting sound, which requires the use of means for generating a carrier frequency, its modulation and inverse transformation into a range of sound frequencies.

A well-known universal transmitter for warning systems, comprising a housing, a cover, an integrated board on which are interconnected controller, radio transceiver, antenna, power source, characterized in that the outer surface of the cover is made in the form of a truncated cone and is equipped with a light frame around the perimeter, on one of the side faces of the body are made controls, namely: microphone switch, microphone sensitivity control, button "TEST", connectors for connecting the sensor cable and the microphone and power connector, on the base of the housing, supports are located in each of the four corners, the housing with a cover for fixing is covered by a holder made of a figured and equipped with an element for attaching cables, in addition, the structural electronic circuit is built on a series connection of the corresponding elements, while the aforementioned circuit is equipped with a microphone amplifier connected to the amplifier controller and the external and internal microphones through the microphone jack, the microphone amplifier is connected to the controller, the latter is connected in series only with a radio transceiver and antenna, the controller has the possibility of contacts with the microphone on button, the “TEST” button, LEDs and a connector for sensors, in addition, the power source is connected to the controller and the radio transceiver, and through the contacts of the power connector with a charger (RU 2 679613 C1).

The disadvantages of the known device are also due to the use of a radio channel with the generation of a carrier frequency, its modulation and demodulation. In addition to excessive complexity, radio-frequency devices are more demanding on the element base used in the radio path. The elements used must have appropriate frequency and time characteristics that ensure the operation of the radio channel, which limits the element base used.

In addition, the known solution is a three-dimensional structure, limiting its use as an information stand, the body of which could fulfill the function of informing about the purpose of the device installed in public places.

A device for inducing a magnetic field is known, comprising: display means including at least one display part and at least one electrically conductive part electrically isolated from said at least one display part, wherein at least one electrically conductive part is configured to generate and / or detecting magnetic field energy for communication with at least another device, wherein at least one electrically conductive part forms an induction coil (see RU 2530761 C2) .

The known solution involves the presence of a display for the use of its electrically conductive part, which, according to the description, can be implemented on one of the conductive layers used in LCD technology, for example, on one layer of thin-film transistors or on a layer used as a contact to provide a potential difference between the LCD -cells. The lack of a display with the indicated conductive part eliminates the possibility of implementing a known device.

The closest in technical essence - the prototype is a flat induction antenna containing inductance in the form of a multi-turn arithmetic spiral, the turns of which are made of a tape conductor located on a dielectric base, while the width of the gaps between the turns of the spiral is chosen to be the same and equal to the width of the tape conductor of the spiral, the supply line , designed to connect a source of high-frequency oscillations to the inductance, in the middle of a spiral conductor at a distance of λ / 8 from it at where λ is the working wavelength in the spiral, a gap is made with the formation of a gap located transverse and symmetrical with respect to the longitudinal axis of the spiral and intended for excitation by the source of high-frequency oscillations of the common-mode currents in the spiral conductors, forming a two-way arithmetic spiral whose conductors are bent to the opposite from the gap sides, and the width of the gaps S between the turns of the spiral and the width W of the ribbon conductor of the spiral are selected equal to S = W = 0,00042λ, in the middle of the ribbon conductor of each branch Pirali variable capacitance switched capacitor (cm. RU 2470423 C1).

The use of a ribbon conductor for spirals makes it possible to make a known antenna in the form of a thin plate on which information can be placed informing about the purpose of the device for placement in public places.

However, the known solution is intended for use with a high-frequency signal of a certain wavelength, which suggests the need for modulation of the carrier frequency, which, in turn, complicates the system for transmitting sound as a whole. Reducing the wavelength to sound frequencies is impossible due to an unacceptable increase in the dimensions of the antenna. So for a frequency of 1 kHz, the width of the tape conductor and the gap between the turns would be 126 m, which is impossible to apply, in most cases, including for induction communication with hearing aids of users in the premises.

Utility Model Disclosure

The technical result is to simplify the device.

This result is achieved by the fact that in the shaper of the induction field for wireless communication with a hearing aid containing a multi-turn spiral of tape conductor located on a dielectric flat base, the base is a plate of a printed circuit board with an area of 0.03 to 2.0 m ² , while the spiral is made as a single printed conductor with up to 40 turns.

In addition: - the induction field shaper is configured to be mounted on a horizontal surface using a bracket fixed to the bottom of the plate;

- the shaper of the induction field is made with the possibility of mounting on a vertical surface using a bracket mounted in the lower part of the plate;

- the surface of the spiral is covered with a dielectric layer;

- shaper induction field is configured to be fixed on the inner side of the plate of the amplifier sound frequency.

Brief Description of the Drawings

The induction field driver is illustrated using the drawings, where in FIG. 1 shows a front view of the device, FIG. 2 is a rear view of a plate with a spiral formed on it; FIG. 3 is a structural diagram of a communication system of a hearing aid with an induction field driver; FIG. 4, an example embodiment of the device, a general view from the outside, in FIG. 5 is a side view of the device with an amplifier and an arm; FIG. 6 is an example embodiment of a device, a rear view with an audio amplifier and a bracket mounted thereon.

The following notation is made in the drawing:

1 - dielectric plate, 2 - spiral, 3 - leads of the spiral, 4 - audio amplifier, 5 - information in the form of a generally recognized symbol about the presence of an induction loop for hearing aids, 6 - microphone, 7 - magnetic one-way communication system, 8 - hearing aid , 9 - a magnetic loop, 10 - a hearing aid amplifier, 11 - headphones, 12 - an arm, 13 - fixing loops for attaching to a vertical wall, 14 - sampling for easy gripping, 15 - fixing holes for attaching an arm, 16 - fixing elements of an arm .

The embodiment characterized by the drawings does not limit the modifications of the induction field driver and is given only as an example. Specialists in the art may offer other embodiments of the present device and their modifications corresponding to the formula.

The induction field generator provides one-way induction communication with the user of the hearing aid and contains a flat base in the form of a rigid, oriented in the vertical plane of a rectangular plate printed circuit board with an area of 0.03 - 2.0 m ² , on the outside (Fig. 1) side of which the information on there is an induction loop for hearing aids, and on the inside (Fig. 2) a multi-turn spiral is made of a tape conductor with a number of turns up to 40. The tape conductor is a printed conductor with a thickness of 0.5 - 2.0 mm and a width of 1.0-100 mm. The plate has holes for mounting the bracket in the form of a support for mounting the plate in a vertical plane.

The multi-turn spiral is connected with its findings to the output of the audio frequency amplifier (Fig. 3), and the hearing aid is equipped with a magnetic loop connected through an appropriate amplifier to the converter of the electrical signal into sound.

The flat base is provided with holes for fastening by means of fasteners (Fig. 4) in its lower part of the bracket, acting as a stand, holding the shaper of the induction field vertically on a horizontal surface, or for fixing it on a vertical surface by means of loops.

The surface of the spiral is covered with a dielectric layer and has contact pads at the ends of the spiral for connecting them to the output of the audio frequency amplifier, which is also mounted on the inside (Fig. 5) of the flat base or is located separately from the inductor of the induction field and connected to the leads of the spiral using a connecting conductor , for example, using twisted pair.

The flat plate has a sampling of its upper part, the width of the palm of the hand, to provide a comfortable grip for carrying or moving.

The induction field shaper is configured to be installed in places accessible for viewing by users of hearing aids.

The appearance of the inductor of the induction field is characterized by the presence of a flat rectangular plate with an information symbol applied on its outer side, the presence of a bracket in the lower part of the plate, and the presence of an audio frequency amplifier mounted on the inside of the plate. The shape of the induction field shaper is characterized by a large area for performing information designation and a flat structure oriented vertically. The compositional solution of the inductor of the induction field has a sufficient artistic and informational expressiveness, creating an understandable image and informing about its specific purpose.

Utility Model Implementation

Shaper induction field is used as follows.

Users of hearing aids equipped with an induction communication system visually determine the place equipped with an induction warning system by the presence of a generally accepted symbol about the presence of an induction loop and, having approached the location of the induction field shaper, they obtain the sound information they need.

Such places equipped with an induction warning system can be special places in the conference hall, ticket offices, audio guides at historical monuments and museums, etc.

Provided that the shaper is performed on a plate of size A4 with the number of turns of a spiral of 10 turns and an amplifier power of 0.5 W, the communication range is at least 2 m.

Since the information symbol is applied directly to the plate — the inductor of the induction field, the user’s actions are intuitive: the closer to the information symbol, the better the communication quality.

In the case of installing the device, for example, at the ticket office of the station, a microphone connected to the amplifier input and installed in front of the cashier converts the speech sounds of the cashier behind the glass partition into electrical signals amplified by the amplifier and fed directly to the input of the induction field driver.

The magnetic field of the sound frequency is converted by the magnetic loop of the user's hearing aid into an electrical signal and, after amplification in the amplifier of the hearing aid, is again converted into sound vibrations sent to the user's ear canal. Thus, the user is provided with high-quality communication, regardless of the noise level in the hall.

For other purposes, for example, an audio guide, a player or other sound reproducing device can be connected to the input of the amplifier.

The combination in one place of a visual alert about the presence of a magnetic loop of communication directly with the magnetic field driver itself eliminates the need for the user to search for a place or direction of signal reception.

As a dielectric plate, a single-layer or two-layer textolite board is used, on which a spiral is formed by etching. To exclude galvanic contact of the spiral with the amplifier and other devices, the side of the plate with the spiral made on it is covered with a dielectric layer - enamel. In this case, the outer side of the plate is used to apply visual information.

The contact pads of the leads of the spiral are located directly at the ends of the spiral and are configured to connect the outputs of the amplifier to them. The amplifier is fixed on the plate itself, on its inner side using an appropriate mount. The amplifier can be located at a distance from the plate and be connected to the contacts of the findings of the spiral through a cable.

The shaper of the induction field is mounted on a horizontal surface with the help of a bracket mounted on the bottom of the bracket - stand (Fig. 4), which is fixed to the plate using fasteners installed in the holes of the plate in its lower part.

The holes on the bracket allow you to mount the device on a vertical wall or a glass partition of the cash register.

The implementation of the plate from hard, ensuring the preservation of its flat shape of the material, provides the possibility of its support on its lower end part, contributes to the visibility of the information message, and also ensures the stability of the generated radiation pattern. In addition, the rigidity of the plate allows the bracket to be attached to it.

The implementation of the shaper induction field on the basis of the printed circuit board simplifies production, increasing its manufacturability and at the same time provides the ability to use it as an information stand when applying on one side of the sheet of the printed circuit board the corresponding designation. At the same time, the spiral made in the form of a printed conductor and coated with a dielectric layer is resistant to atmospheric influences, which makes it possible to use the device as an information stand outdoors.

The flat shape of the induction field shaper oriented in the vertical plane is optimal for installation as an information stand, which practically does not occupy the hall area, shows the information symbol in the vertical plane and forms a diagram with maximum values in the perpendicular plane, contributing to better inductive communication with users at sound frequencies .

The area of the used plate is from 0.03 to 2.0 m ² , which makes the information sign printed on it easily readable in the conditions of the cash register hall, museum premises, street exposition, etc. and allows you to perform a spiral on the plate up to 40 turns of a printed conductor with a thickness of 0.5 to 2.0 mm, a width of 1.0 to 100 mm, necessary for the formation of an induction field in the sound frequency range.

Placing the spiral leads on the inner side of the plate allows you to fix the audio frequency amplifier on the plate itself on its inner side, making the connection stable, which makes it possible to coordinate the amplifier output once with the parameters of the induction spiral before installing the device as an information stand, including under a protective glass or in hard to break into place. In the case of a remote location of the amplifier, coordination is carried out taking into account the connecting cable. The absence of the need for additional adjustments related to matching the output of the amplifier also increases the manufacturability of using the shaper of the induction field.

The possibility of mounting on the bracket plate allows vertical installation of the device to facilitate the visual reading of the information symbol.

For the convenience of carrying a device mounted on a horizontal surface, for example, in the case of movement following an exhibit, there is a sample at the top of the plate for hand grip.

The induction field shaper provides the formation of an induction field of sound frequencies, does not require the transfer of the spectrum to high frequencies of the radio range, but provides communication at low - sound frequencies. The implementation of communication at low frequencies eliminates the high frequency requirements for the used element base of the amplifier. Induction coupling at sound frequencies also eliminates the need to transfer the spectrum to the carrier frequency, which simplifies the device.

The spiral is made by a single conductor and does not require the presence of capacitors between the sections, which simplifies the design of the inductor of the induction field.

The induction field shaper can be made using standard materials such as textolite printed circuit board, plastic, and standard electronic components, and its manufacture can be carried out in mass production using standard equipment.

Thus, the shaper of the induction field is simpler in design.

Claims (5)

1. An inductive field shaper for wireless communication with a hearing aid, comprising a spiral of a tape conductor located on a dielectric flat base, characterized in that the base is a plate of a printed circuit board with an area of 0.03 to 2.0 m ² , the spiral being made in the form of a single printed conductor with up to 40 turns. 2. The shaper according to claim 1, characterized in that it is made with the possibility of installation on a horizontal surface using a bracket mounted in the lower part of the plate. 3. The shaper according to claim 1, characterized in that it is made with the possibility of mounting on a vertical surface using a bracket mounted in the lower part of the plate. 4. The shaper according to claim 1, characterized in that the surface of the spiral is covered with a dielectric layer. 5. The shaper according to claim 1, characterized in that it is made with the possibility of fixing on the inner side of the plate of the audio frequency amplifier.

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