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System for maintaining spatial orientation in people suffering from vision function disorders

System for maintaining spatial orientation in people suffering from vision function disorders
IPC classes for russian patent System for maintaining spatial orientation in people suffering from vision function disorders (RU 2299052):
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FIELD: medical engineering.

SUBSTANCE: device has at least, one source and signal receiver connected through switchboard to data processing device, connected through modulator to corresponding device for treating patients. Magnetometer and pedometer are connected in addition to data processing device through switchboard. GPS system is connected to the switchboard through aerial.

EFFECT: high spatial orientation accuracy.

5 cl, 1 dwg

 

The invention relates to devices to facilitate the life of the blind.

A device for the orientation of people with impaired visual functions in RF patent No. 2184518, publ. 27.08.02, This device is a folding cane. The cane made with the possibility of changes in length due to changes in operating conditions in the path to determine the distance to a remote object. This cane is also limited, even compared to the usual standard cane without adjustment, for example not possible to determine the distance to the object and the presence in biological objects.

A device for the orientation of people with impaired visual functions described in the website "Internet" htt://www.membrana.ru. This high-tech cane contains a source of ultrasonic signal, the signal receiver and 4 devices of human exposure. Device for human exposure is made in the form of a vibrator built into the handle of a cane. In the above example is not described how to determine the distance to the subject. No data on accuracy, but it is obvious that the accuracy of the measurement of linear dimensions are very small.

A device for the orientation of people with impaired visual functions at the request of the Russian Federation on izaberete is their No. 20002129122 And, publ. 27.04.2004, (prototype)containing one or more than one source and signal receiver, connected via a switch to the information-processing device, connected through the modulator device effects on humans.

The disadvantage is the low accuracy of the orientation and the impossibility of detection of biological objects.

The task of the invention: improving the accuracy of the orientation of people with impaired visual functions and identifying the presence of biological objects.

These objectives are achieved by the fact that in the system of spatial orientation of people with impaired visual functions containing at least one source and the signal receiver is connected through a switch to the information-processing device, connected through the modulator with corresponding effects on humans, through the switch to the data processing unit is additionally connected to the magnetometer and the pedometer and GPS system is connected to the switch via the antenna. The source signal is a wave emitter, for example, laser or ultrasound. The device human exposure is made in the form of an audio oscillator or vibrator, or in the form of the surface, causing tactile sensations.

Conducted patent studies have shown that the proposed tehnicheskomprodlenii novel inventive step and industrial applicability, i.e. all criteria of the invention.

The invention is illustrated in the drawing.

The system includes a signal source 1, receiver 2, receiver IFS (infrared radiation) 3, a microphone 4, a magnetometer 5 and pedometer 6 connected to the switch 7. To the switch 7 is connected the GPS system (global positioning system) 8, an antenna 9 having the ability to channel 10 to communicate with the satellite 11.

The output of the switch 7 is connected to the data processing unit 12, which may contain several, for example N, ADC 13 (analog-to-digital converters), the outputs of which are connected to the processor 14. The processor 14 is connected to the memory 15, modulator 16, the output of the modulator 16 is connected to the device for human exposure 17.

The output of the processor 14 is also connected to the speech synthesizer 18 which is connected to the speaker 19.

The system is designed to determine the distance to the object 20 or biological object 21 and coordinates of the location of the consumer.

Magnetometer 5 contains a flux-gate sensor, allowing to determine the azimuth angle to the longitudinal axis of the device for orientation. For example, you can use the magnetometer LEMI-004, described on the website) http://www.isr.lviv.ua.

At work (see drawing) switch commutator is 7, and electric power is applied to the signal sources 1 and the receivers 2 and all the other electronic components of the device. Wave signal emitted by the signal source 1 is applied to an obstacle 20, is reflected from it and to the input of the signal receiver 2, then through the switch 7 to the data processing unit 12, the modulator 16 and the device effects on humans 17. The modulator 16 changes the intensity or the frequency with decreasing distance to the obstacle 20. Having a particular skill, the user learns about the distance to the obstacle to the nearest 10 cm, and may also determine the dimensions of the object and to install, move this object in space. During prolonged exercise, the user may receive a large amount of information from all sides and analyzing it, almost to navigate in space almost as sighted people.

The presence of the receiver IFS 3 can detect biological objects on it emitted heat.

Inanimate objects have a temperature equal to ambient temperature, i.e. in the winter time is negative, and in the summer time from 0 to 30°C. Conditions of extreme heat or conditions of stay in the desert can not be seen even in theory, because staying in such an atmosphere people with disabilities is not desirable. Biological objects have a temperature of from 36 what about the 42° C. If the receiver IFS measures the temperature of the object with an accuracy of 1...2°With, there is a real possibility to determine the presence of a biological object or other source of danger, such as a hot stove, etc. With some training and skill information received from the sensor IFS, it may be useful to ensure the safety of the visually handicapped.

The use of the microphone 4 will allow a blind person to find the device in the room. Magnetometer 5 determines the angular azimuth orientation of the longitudinal axis of the device, and pedometer 6 - the number of covered steps. This information is reported through the impact on a person 17 or speaker 19 to the user. When using schema can be logged in the memory of the Central processor of a few main routes of the user.

Global positioning system GPS (American system) contains the satellites of the GPS receivers and GPS systems. The system allows to determine the user's coordinates to a precision of 2 m in any route. Coordinates may be communicated to the user in the form of a speech signal. Instead of a GPS system can be used by any other system of similar purpose. In Russia a similar system will be used since 2007

The system works based on the reception information simultaneously is about not less than three satellites GPS receiver, which is located on any object, and compute its own coordinates in the space on the time difference of the signals from these satellites.

The application of the invention allowed:

1. To improve the accuracy of the orientation in space of people with impaired visual functions.

2. To ensure identification of biological objects.

3. Find the device in the premises of the blind man.

4. Safely navigate the roadway.

5. To determine the coordinates of the user at any point of the globe.

1. System orientation in space of people with impaired visual functions containing at least one source and the signal receiver is connected through a switch to the information-processing device, connected through the modulator with corresponding effects on humans, characterized in that through the switch to the data processing unit is additionally connected to the magnetometer and the pedometer and GPS system is connected to the switch via the antenna.

2. The system according to claim 1, characterized in that the source signal is a wave emitter, for example, laser or ultrasound.

3. System according to any one of claims 1 and 2, characterized in that the device for human exposure is made in the form of a sound emitter.

4. System according to any one of claims 1 and 2, otlichayushiesya, the device effects on humans are made in the form of a vibrator.

5. System according to any one of claims 1 and 2, characterized in that the device for human exposure is made in the form of the surface, causing tactile sensations.

 

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