DESC:FIELD OF THE INVENTION:
This invention relates to the field of mechanical and electrical engineering.

Particularly, this invention relates to a headgear for the blind.

BACKGROUND OF THE INVENTION:
People without the sense of sight live in a difficult world. A simple act of walking from one place to another becomes difficult and often dangerous. Walking canes and seeing-eye dogs are helpful for avoiding some obstacles, but do not solve the larger problem of navigation and situational-awareness (e.g., there is a window on the left, a table on the right, there is a bus approaching, etc.). Reading signs and printed materials present additional problems. People who are blind rely heavily on their auditory senses to make sense of the worlds on goings, especially in an urban environment.

A great deal of research has been focused on finding ways to aid the blind in “reading” and “seeing.” In addition to more familiar techniques such as Braille, substantial work has been done in presenting printed materials to the blind in the form of coded sounds.

Navigation for blind person is an arduous task. With loss of vision, a blind person needs to rely on secondary mechanisms and other senses to avoid obstacles.

Vision loss increases the risk of unintentional injury like falls and traffic-related injury.

There is, therefore, a need for a system to assist blind people.
OBJECTS OF THE INVENTION:
An object of the invention is to provide an aid for blind people.

Another object of the invention is to help blind people from falls and traffic-related injury.

SUMMARY OF THE INVENTION:
According to this invention, there is provided a headgear for the blind, said headgear comprising:
- a proximity sensor is coupled to said headgear configured to be fitted on to a user’s head, said proximity sensor being configured with a sub band emission of first infrared ray;
- a control circuit configured to be coupled with said proximity sensor, in that an input of an infrared transmitting and receiving sensor, vide said proximity sensor, being connected with one input end of said control circuit and the output end of said infrared transmitting and receiving sensor, vide said proximity sensor, being connected with another input end of said control circuit; and
- an alarm communicably coupled to said control circuit, in that, the sensor configured to convert distance signals into voltage signals which are processed by said control circuit, and after said voltage signals are amplified by a driving circuit, said alarm outputs signals to alarm said user (blind person) wearing said headgear.

Typically, said proximity sensor is an IR sensor.

BRIEF DESCRIPTIPON OF THE ACCOMPANYING DRAWINGS:
The invention will now be described in relation to the accompanying drawings, in which:
FIGURES 1, 2 and 3 illustrate a headgear, of this invention, for the blind.

DETAILED DESCRIPTIPON OF THE ACCOMPANYING DRAWINGS:
According to this invention, there is provided a headgear for the blind.

To achieve these objects of this invention and to overcome prior art limitations, the technical solution of the utility model is a kind of blind-guide device, comprises a cap, sub band emission of first infrared ray, buzzer and relay.

FIGURES 1, 2 and 3 illustrate a headgear (2), of this invention, for the blind.

In at least an embodiment of this invention, a headgear (2) is taken and a proximity sensor (4) is coupled to this headgear. The proximity sensor senses objects which are in proximity to the headgear and, hence, the person wearing the headgear).

Typically, this proximity sensor is an IR sensor.

In at least an embodiment the proximity sensor (4) is configured with a sub band emission of first infrared ray is arranged in the headgear (2).

The utility model has the advantages that the infrared sensor of the headgear for blind persons can make the blind persons know the condition of higher obstacles, and thus, the impact of hanging objects to heads of the blind persons is avoided. The infrared sensor on top of headgear can make the blind persons conveniently know the condition of the surrounding obstacles in each direction, and in such a way, the blind persons cannot bump other persons when walking in the places of concentration of population.
The utility model discloses a walking aid for blind persons, which is characterized in that the output and of an infrared transmitting and receiving sensor, vide the proximity sensor, on a headgear is connected on with one input end of a control circuit (10); the input end of an infrared transmitting and receiving sensor on top of a headgear is connected with the other input end of the control circuit; the output end of the control circuit is connected with the input end of a driving circuit; the output end of the driving circuit is connected with an output device; the infrared sensors convert distance signals into voltage signals which are processed by the control circuit, and after the voltage signals are amplified by the driving circuit, the output device outputs signals to alarm the blind persons.

Infrared ray emission and receptor are measured the distance of object by the phase contrast between the infrared light of measuring emission and reflection, and the variation of phase contrast is converted to the variation of output voltage, the output voltage signal of infrared ray sensor is input to control circuit, control circuit is exported to drive circuit after signal is handled, and drive circuit is exported to output device after signal is amplified. Output device just can send different cues according to the distance of barrier like this, makes the blind person need not see the situation that just can recognize barrier.

In at least an embodiment of this invention, there is provided an alarm (6) communicably coupled to the sensor and is also a part of the headgear. Once the sensor senses proximity to an obstacle, an alarm is sounded to the wearer of the headgear.

A charging port (14) and a switch (12) is provided.

Power to the sensor is supplied by means of a battery (8).

The TECHNICAL ADVANCEMENT of this invention lies in providing a headgear which assists blind persons in navigation and in avoiding obstacles.

While this detailed description has disclosed certain specific embodiments for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.
,CLAIMS:I CLAIM,

1. A headgear for the blind, said headgear comprising:
- a proximity sensor (4) is coupled to said headgear (2) configured to be fitted on to a user’s head, said proximity sensor (4) being configured with a sub band emission of first infrared ray;
- a control circuit (10) configured to be coupled with said proximity sensor (4), in that an input of an infrared transmitting and receiving sensor, vide said proximity sensor (4), being connected with one input end of said control circuit (10) and the output end of said infrared transmitting and receiving sensor, vide said proximity sensor (4), being connected with another input end of said control circuit (10); and
- an alarm (6) communicably coupled to said control circuit (10), in that, the sensor (4) configured to convert distance signals into voltage signals which are processed by said control circuit (10), and after said voltage signals are amplified by a driving circuit, said alarm (6) outputs signals to alarm said user (blind person) wearing said headgear.

2. The headgear (2) as claimed in claim 1 wherein, said proximity sensor (4) is an IR sensor.

Dated this 07th day of July 2020

(Dr Shilpa H. Gharve)
Agent for the Applicant
(Reg. No. IN/PA 890)