CN101806599A - Intelligent blind-guiding method - Google Patents

Abstract

The invention discloses a method for realizing intelligent blind guidance, which includes: receiving voice information input by a user through a voice recognition module, the voice information containing destination address information; identifying a radio frequency identification tag pre-set on a blind road through a radio frequency identification module The address information in; According to the destination address information in the voice information and the address information in the radio frequency identification tag, match the path information for the user; carry out the speech synthesis of the path information through the speech processing module, and output it to the user by speech user. By implementing the embodiments of the present invention, it is more convenient to provide guidance for blind users, so that blind users avoid walking more distances and encountering obstacles, and can quickly reach their destinations.

Description

An intelligent blind-guiding method

technical field

The invention belongs to the technical field of automatic detection and control. Specifically, it relates to a method for guiding the blind in a family room by utilizing technologies such as radio frequency identification and speech synthesis.

Background technique

Most of the information in people's life is obtained through vision, and blind people lose their vision, which brings a lot of inconvenience to their work, life and study. Therefore, the blind person needs the assistance of a blind guide device when walking alone. Among them, the simplest and most commonly used device is the blind stick, which is used to judge the terrain of the passing position and whether it is dangerous by tapping the ground. Later, the electronic blind stick appeared, which uses infrared sensing electronic technology and ultrasonic technology to extend the detection time range, but the range they can perceive is very limited, and they cannot yet play a guiding role. In addition, by laying some guide bricks with protruding objects on the road, the blind can walk according to the designated safe path by the touch of the soles of the feet, but they cannot effectively point out the definite path.

With the development of technology, various blind guide devices based on the Global Positioning System (GPS) have emerged. It relies on satellites to determine the current location of the user, and cooperates with the corresponding algorithm to give the user an appropriate path. However, since the distance between the satellite and the ground is very far, and the travel distance of a person is sometimes negligible compared with it, the positioning accuracy of this device is not very high, especially the surrounding environment cannot be told to the user. When the user is in the family room, due to the complexity of environmental changes, the GPS signal is blocked and there are no factors such as indoor GPS maps, this blind guide device will not work properly.

At present, most of the blind guide devices in China are aimed at outdoor large-area spaces, and these devices are not suitable for indoors. Therefore need a kind of intelligent blind guide system that can judge whether there are obstacles in front and whether can pass indoors, and can provide more home environment and terrain information to the blind.

Contents of the invention

The purpose of the present invention is to provide a family indoor intelligent blind-guiding method based on radio frequency identification technology, which can not only provide blind users with detailed surrounding terrain and obstacle information, but also enable blind people to safely, accurately, Quickly reach the designated destination.

In order to realize the above invention, an embodiment of the present invention provides an intelligent blind guiding method, the method comprising:

Receive voice information input by the user through the voice recognition module, and the voice information contains destination address information;

The address information in the radio frequency identification tag pre-set on the blind road is identified by the radio frequency identification module;

matching path information for the user according to the destination address information in the voice information and the address information in the radio frequency identification tag;

The route information is synthesized into speech by the speech processing module, and output to the user by speech.

Correspondingly, the matching path information for the user according to the destination address information in the voice information and the address information in the radio frequency identification tag includes: according to the destination address information in the voice information and the radio frequency identification tag When multiple paths are matched by the address information, the paths are calculated and processed, and an optimal path is selected as the path information matched by the user.

Correspondingly, the method further includes: after identifying the address information in the radio frequency identification tag preset on the blind road by the radio frequency identification module, judging that the address information in the radio frequency identification tag is consistent with the destination address information; When it is found that the address information in the radio frequency identification tag is consistent with the destination address information, then end the intelligent blind guide; if it is judged that the address information in the radio frequency identification tag is inconsistent with the destination address information, then according to the voice information The destination address information in and the address information in the radio frequency identification tag are user matching path information.

The blind guide system in the embodiment of the present invention stores the environmental information of a fixed point and its surroundings in the radio frequency identification tag placed at the point. When within the radio frequency range, the main control module will receive the information sent from the radio frequency identification module. After the main control module processes the information, the voice processing module converts the information into a voice signal and outputs it to the user. The user perceives the terrain changes and surrounding objects from the sound, and at this time can judge the environmental area where the user is located. After the main control module receives the information from the radio frequency identification tag and the voice recognition module, according to the obtained data and the indoor environment and structure information stored by itself, combined with the path optimization algorithm, an optimal route between the current position and the destination is obtained. The path plan and the label sequence in this path are then transmitted to the main control module in a certain data format. The optimal selection of the use path enables blind users to avoid walking more distances and encountering obstacles, and to reach the destination quickly. Because the speech synthesis function is adopted in the embodiment, any text information transmitted from the control module can be converted into standard smooth speech in real time. The speech synthesis module in this system can perform linguistics, prosody and Acoustic processing translates into clear voice messages, making it easier for users to adapt to the complex and ever-changing object placement and terrain environment in the home room.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a flow chart of a method for implementing an intelligent blind guiding system in an embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

Correspondingly, the method for realizing intelligent blind guiding in the embodiment of the present invention mainly is to receive the voice information input by the user through the voice recognition module, which contains destination address information; Address information in the label; match path information for the user according to the destination address information in the voice information and the address information in the radio frequency identification tag; perform speech synthesis on the path information through a speech processing module, and output it by speech to the user.

Further, when multiple paths are matched according to the destination address information in the voice information and the address information in the radio frequency identification tag, the paths need to be calculated and processed, and an optimal path is selected as the path matched by the user information.

Further, after the address information in the radio frequency identification tag pre-set on the blind road is recognized by the radio frequency identification module, it is judged that the address information in the radio frequency identification tag is consistent with the destination address information; if it is judged that the radio frequency identification tag When the address information in the radio frequency identification tag is consistent with the destination address information, the intelligent blind guiding will end; if it is judged that the address information in the radio frequency identification tag is inconsistent with the destination address information, then according to the destination address information and The address information in the radio frequency identification tag is user matching path information.

Specifically, FIG. 1 shows a specific processing flow chart in the embodiment of the present invention. Here, the family intelligent blind guide is used as an example for illustration, including the following steps:

S401: start;

S402: initialization of each module;

After the entire intelligent blind guide system is powered on, each module is initialized;

S403: the radio frequency module identifies the nearest radio frequency identification tag, and the voice recognition module reads the user's destination instruction;

Specifically, the reader in the radio frequency identification module sends a radio frequency signal of a certain frequency to the surrounding through the transmitting antenna, and the reader in the radio frequency identification module reads the address information stored in the nearest tag, demodulates and decodes it and sends it to the main control module , in this step, the user can issue a destination command through the voice recognition module, and this module receives the voice command information and converts it into a text recognition code through a series of processing steps, and sends it to the main control module. It should be noted that, in this step, the radio frequency identification module recognizes the address information and the user receives the destination instruction through the voice recognition module. Destination instruction; or receive the destination instruction first, and then obtain the address information of the user.

S404: The main control module receives the address information in the radio frequency identification tag and the destination address information in the voice recognition module;

In this step, the main control module reads the nearest tag from the reader in the radio frequency identification module, marks the tag as the initial node, reads the destination information in the speech recognition module at the same time, and then performs appropriate processing.

S405: Calculate path information;

In this step, the main control module extracts the family indoor structure and environment data stored in the local database according to the initial tag information and destination information, and calculates the route.

S406: Obtain the optimal path and obtain the forward method;

The main control module synthesizes these information and uses the optimal path selection algorithm to obtain an optimal path scheme to the destination, as well as the label sequence passed in the path, where each label is located, the optimal path scheme has a forward method. After obtaining the optimal path, the main control module integrates the location label and the optimal path plan. On the one hand, it checks whether the location is correct, and on the other hand, it analyzes the way forward at the location of the label, including specific directions and distances. If the location is correct, then the label information and the advancing method of the position are sent to the speech synthesis module in text form, otherwise the error prompt and the information of the label here are written into the text and sent to the speech synthesis module as well.

S407: performing speech synthesis;

In this step, after the speech processing module receives the text data, it converts it into a standard Mandarin speech signal through linguistics, prosody and acoustic processing.

S408: voice output;

In this step, after the speech processing module obtains the speech synthesis signal, it appropriately amplifies the speech signal according to the on-site environment, and sends it to the blind user through earphones or loudspeakers, and the blind user starts to walk forward according to the designated route after receiving the voice prompt .

S409: The radio frequency identification module receives the next tag data and submits it to the main control module for analysis;

In this step, when the blind user reaches the radio frequency range of the next tag, the tag is activated, and the reader receives the information of the tag and sends it to the main control module. The main control module first judges whether the location of the tag is the destination, if not, transfer to S406, otherwise end the current blind guiding process.

S410: end.

The blind guide system in the embodiment of the present invention stores the environmental information of a fixed point and its surroundings in the radio frequency identification tag placed at the point. When within the radio frequency range, the main control module will receive the information sent from the radio frequency identification module. After the main control module processes the information, the voice processing module converts the information into a voice signal and outputs it to the user. The user perceives the terrain changes and surrounding objects from the sound, and at this time can judge the environmental area where the user is located. After the main control module receives the information from the radio frequency identification tag and the voice recognition module, according to the obtained data and the indoor environment and structure information stored by itself, combined with the path optimization algorithm, an optimal route between the current position and the destination is obtained. The path plan and the label sequence in this path are then transmitted to the main control module in a certain data format. The optimal selection of the use path enables blind users to avoid walking more distances and encountering obstacles, and to reach the destination quickly. Because the speech synthesis function is adopted in the embodiment, any text information transmitted from the control module can be converted into standard smooth speech in real time. The speech synthesis module in this system can perform linguistics, prosody and Acoustic processing translates into clear voice messages, making it easier for users to adapt to the complex and ever-changing object placement and terrain environment in the home room.

Through the above description of the implementation manners, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course can also be implemented entirely by hardware. Based on this understanding, all or part of the contribution made by the technical solution of the present invention to the background technology can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, optical disks, etc. , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

The above disclosure is only a preferred embodiment of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (3)

1. A method for realizing intelligent blind guiding, characterized in that, comprising: Receive voice information input by the user through the voice recognition module, and the voice information contains destination address information; The address information in the radio frequency identification tag pre-set on the blind road is identified by the radio frequency identification module; matching path information for the user according to the destination address information in the voice information and the address information in the radio frequency identification tag; The route information is synthesized into speech by the speech processing module, and output to the user by speech. 2. The method according to claim 1, wherein the matching path information for the user according to the destination address information in the voice information and the address information in the radio frequency identification tag comprises: When multiple paths are matched according to the destination address information in the voice information and the address information in the radio frequency identification tag, the paths are calculated and processed, and an optimal path is selected as the path information matched by the user. 3. The method of claim 1, further comprising: After the address information in the radio frequency identification tag pre-set on the blind road is identified by the radio frequency identification module, it is judged that the address information in the radio frequency identification tag is consistent with the destination address information; If it is judged that the address information in the radio frequency identification tag is consistent with the destination address information, then end the intelligent blind guide; if it is judged that the address information in the radio frequency identification tag is inconsistent with the destination address information, then according to the The destination address information in the voice information and the address information in the radio frequency identification tag are user matching path information.

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