SU1219080A1 - Compass for persons with reduced eyesight - Google Patents

Description

The invention relates to typhlotechnics. to instruments and devices for training the blind and visually impaired by means of communicating with them and to devices for their orientation.

The aim of the invention is orientation with sound and light signals.

FIG. 1 shows a compass, a slit in FIG. 2, a compass, a plan.,

The compass includes a housing 1 and a magnetic needle 2. The housing 1 consists of half-shells 3 and 4 and covers 5 and 6, made of translucent non-magnetic materials and interconnected by non-magnetic fasteners (not shown). The connectors between the half-bodies 3 and 4 and the covers 5 and 6 are sealed with sealing gaskets 7-9. The magnetic needle 2 is mounted on the needle 10, equipped with a shutter 11 and a counterweight 12. The relief sections 13 and 14 are made on the lid 5, one of which, 14, is larger than the others. The cover 5 may be made in the form of a lens or a Fresnel lens. On the cover 5 there is mounted a relief index 15 of the course, which is fastened with a screw 16 with a washer 17 In the cavity between the cover 5 and the half-shell 3 there is filled in a clear liquid 1 of the magnetic needle 2. The generator 18 is sound with a control input, the emitter 19 is light , a light source 20 with a control input and a power source 21 are fixed in a semi-housing 4, and a photo sensor 22 is mounted on the cover 5. The switch 23 of the light source 20 20 is connected to the switch 24 of the power supply 21 on the cover 6. On the semi-housing 3 under the arrow 2 there is a ppsala 25 for weak seers. The sound generator 18 can be made in the form of an earphone with a microscope or a piezo element. At the same time, the sound generation can be combined in it with the generation of radio signals in the amateur band. The sound generator 18 and the power supply source 21 are outside of the magnetic field: the magnetic arrow 2 floor. On the floor of the case, a warning has been given to all on the floor by 4 translucent signs. The compass works as follows. When the switch 24 of the power supply source 21 is turned on, a light emitter 19 is activated, which acts on the photosensor 22. When the compass case 1 is turned to divide the division 14 with the shutter

11 of the magnetic needle 2, the shutter 11 overlaps the light signal supplied to the photosensor 22, which at this moment actuates the sound generator 18 and the light source 20. Thus, a scale of 25 is illuminated for the visually impaired, and a completely blind slash sound is heard, indicating that division 14 is aligned with a magnetic arrow pointing north. By counting from dividing 14 the required number of divisions 13, a blind can set the embossed pointer 15 of the course in the required direction and follow

him When the light source 20 is switched on, a warning issued by the light on the half-shell 4, for the aspirant and for the drivers of transport, is clearly emitted by the light. In case of deviation, it is invisible from

The shutter curtain 11 opens the access of the light signal and the photo sensor 22. Since the light signal drastically changes the light level of the photo sensor 22 (the light created by the source 20 is not sufficient for the photo sensor 22 to operate), the latter is triggered and influenced by control. sound generator inputs

ka and the light source, disconnects them. Acting switch 24, disabled

on sight, simultaneously with switching off the electrical circuit, it sends radio signals. For the sake of that, the cessation of sound serves as a signal of a deviation from the course, and for the visually impaired with impaired hearing an additional signal about a deviation from the course will be the cessation of the scale. Rotating the compass in the magnetic field of movement of the magnetic needle, {1 sight of the sight will restore its former position and can follow in the required direction, without stopping to check the correctness of movement along a given course.

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FIG. 2

Claims (1)

COMPASS FOR FACES WITH REDUCED: VISION, comprising a housing, a magnetic needle and a scale with embossed divisions, characterized in that, for the purpose of orientation by sound and light signal, it is equipped with a sound generator located in the housing with a control input, an arrow deflection transformer made in in the form of a light emitter and a phrosensor, a light source with a control input and a power source, as well as a heading indicator mounted with the possibility of rotation on the housing, while the light emitter, sound generator and source the lights are connected to a power source, and the photosensor is connected. nen with control inputs of the sound generator and light source.