RU35222U1 - MOTION INDICATOR - Google Patents

Description

The proposed utility model relates to the field of technical means of presenting information about covert movement and can be widely used, in particular, to provide valuable information on obstacles to the visually impaired; tourists (and any person) when moving in the dark, dense fog, heavy snowfall and other difficult weather conditions; security structures on the specific movement of the objects protected by them; as well as a signal (watchdog) device, for example, transport, etc.

Known technical means for a similar purpose with different constructive realization of the attainability of a technical result.

A device for orienting the visually impaired based on measuring the distance to an obstacle by the method of reflected ultrasonic waves is known. One of the first such devices was implemented using radio tubes and its weight was several kilograms, which caused great inconvenience to the user 1.

A technical means of rehabilitation of the visually impaired 2 is known, which allows them to independently move in an unfamiliar area. The invention provides an opportunity for a blind person to navigate independently in an unfamiliar area, receive information about the range of the detected object and identify it. This is achieved by the fact that the device uses optics using a Fresnel profile and a laser emitter. The receiver is made in the form of a short-range ruler, combined along the length with the optical axis. A magnetic compass is introduced into the device, the scale of which is indicated by sound vibrations. The glass from each photo area is encoded with its own code and is filled with the sound frequency determined by the position of the matte arrow. The logarithmic unit controls the volume of the sound sitals depending on the reflectivity of obstacle objects. The device can be equipped with an audio pedometer. However, this device does not have a high accuracy motion indication.

using ultrasound, in particular, ultrasonic locators, BbinycKaeMbte in New Zealand (Pulse Data International Ltd.), in Canada (Brytech Inc. Canada), USA (Nurion Industries USA) and others.

laser type, in particular, manufactured in the USA (Nurion Industries USA) and others.

All of these devices have a weight of 0.2 to 0.5 kg and a high cost (from 775 to 2.500 and more than US dollars).

Known technical means for providing orientation of the blind in the environment, closest to the proposed utility model and adopted as a prototype 3, which are ultrasonic locators. For perception by the auditory analyzer of the reflected sipnal, it is necessary to translate it into the region of sound frequencies, which is carried out by isolating the low-frequency envelope. In this case, only part of the information contained in the echo signal is perceived. In the proposed method, as a polishing agent, a complex glass is used. The response of matched filtering in the atom case is close to the impulse response of the scattering volume. To match the frequency and time ranges of the signal with the auditory analyzer, a temporary stretching of the responses of the matched filtering in each receiving channel is performed. The visually impaired by the visually impaired aggregate of stuccoes from nearby objects, allows him to create an acoustic picture of the environment.

The disadvantage of this device is the low display accuracy, relatively large weight and high cost

The technical result of the proposed utility model is a significant reduction in its cost (compared with world analogues), which ensures the availability of the claimed device to almost all segments of the population, as well as higher reliability of the device and the accuracy of the motion indication.

The technical result is achieved in that in a device for indicating motion containing a generator connected through a current amplifier with an ultrasonic transducer connected to an amplifier of the reflected glass, and an electric sipnal converter in sound, in accordance with the proposed utility model, the reflected signal amplifier through a comparator and analyzer time and the sound signal is connected to the transducer of the electrical signal to sound, the generator is connected to the control unit, and as a pre zovatelya electric sound sieve used micro-computer placed in the analyzer and outputting an audio time sieves, wherein the generator, a comparator, a control unit and time parser and outputting sound sieve placed therein a microcomputer arranged in the housing for movement indicating device.

The generator (1) is connected through a current amplifier (2) to an ultrasonic transducer (3), which is connected to the collector (4) through a reflected signal amplifier (5); the generator (1) is connected to the control unit (6), and the comparator is connected through the time analyzer and issuing an audio signal (7) to the audio signal converter (8).

The operation of the proposed device is illustrated in figures 1 and 2. In FIG. 2 shows in coordinates the voltage ("U) and time (" t) the conversion of electrical signals into sound ones. In FIG. 2A - signal received from the ultrasonic transducer (3); in FIG. 2B - reinforced glass and reference voltage received from the control unit (5); on figv - the signal from the comparator, where it arises as a result of comparing the reference signal and the received reflected sipnal (the comparator has two inputs - the reference signal from the control unit and the reflected signal) (4), the sipnal enters the time analyzer and the output of the sound signal (6) .

The operation of the device is as follows.

The generator (1) generates an electric signal, which is a radio pulse of a given frequency and duration, and supplies voltage through an amplifier to an ultrasonic transducer (3), which operates in two modes: both as an ultrasound emitter and as a receiver reflected from an object (obstacles) ) ultrasonic fizz. The ultrasonic signal reflected from the object enters the ultrasonic transducer (3), where it is converted into an electric signal (Fig. 2A), which is amplified in the reflected signal amplifier (5) as can be seen from FIG. 2B, and enters the comparator (4), in which, as shown in FIG. 2 (B and C), the formation of the glass occurs, which is formed by comparing the reference and reflected signals.

Using the time available in the analyzer and issuing the sound signal (7) of the microcomputer controlled by a specially defined program, ultrasonic glass is generated, the received reflected glass is processed, it is analyzed and determined with an accuracy of 0.3 meters of the distance to the object (obstacle).

Depending on the distance to the object (obstacle), the analyzer of time and the issuance of sound sital sends a signal of a certain tonality and frequency which is higher and more often, the closer the distance to the object (obstacle) to the sound sital converter (8), in which, in turn, there is a transformation of the electric glass coming from the analyzer (7) into sound (B).

In addition, the control unit (6) starts the generator (1), which is shown in Fig. 1 in the form of a connection 1 and 6. The start of the generator is controlled immediately after the output of the sound from the transducer of the sound (8), which ensures a certain frequency of sound Sitala and its frequency. The tone is formed by the control unit and obeys the following expression;

The proposed utility model has been tested in a laboratory version at St. Petersburg State University. It is a compact, miniature device for indicating movement, which is mounted in a plastic case 5.5 cm wide, 12 cm long and 2.8 cm high, which fits freely in the hand and weighs no more than 200 frames.

The range of its action, as well as the weight and ease of use by consumers due to its compactness, are comparable to the world analogues mentioned above in this description, and is 4-5 meters. The accuracy of the display is high: no worse than 0.3 meters. Measurement of the distance from the object (obstacle) can start from a distance of 0.7 meters.

In addition, the great advantage of the proposed utility model is a high degree of reliability and low cost compared to Western companies: the cost of a laboratory sample is not more than $ 15 (in New Zealand - 775, in Canada - 950, in the USA - from 870 to 2.250 dollars .USA respectively).

In Russia, such devices are not currently manufactured.

Used sources 1. Bergman L. “Ultrasound and its application 1956, p. 726. 2. RF patent No. 2068678. 3. RF patent No. 2053746 (prototype). Representative of the Applicant by proxy (in case) L / in science and technology, Moscow, IL, //uKh/T.I. Matveeva

Claims (1)

A device for indicating motion, comprising a generator connected through an amplifier to an ultrasonic transducer that is connected to a reflected signal amplifier and an electric to audio converter, characterized in that the reflected signal amplifier is connected to an electric signal converter through a comparator and an analyzer of time and outputting an audio signal in the sound, the generator is connected to the control unit, and micro-computers are used as the converter of the electric signal into the sound, azmeschennaya time in the analyzer and outputting an audio signal, the generator, a comparator, a control unit and time parser and outputting an audio signal disposed therein a microcomputer arranged in the device housing for movement indication.