CN202010266U - Intelligent crutch for the blind - Google Patents

Abstract

An intelligent crutch for the blind comprises a crutch body; a control system is disposed in the crutch body; the control system includes a processer, a video carema, a speech sound module, a zigbee module and a GPS model; the processer is respectively connected with the video camera, the zigbee module, the GPS model and the speech sound module; the video camera and the speech sound module are connected with the processer by IO ports; the zigbee is connected with the processor by a serial port; and the GPS module is connected with the processor. Compared with the prior arts, the utility model achieves the advantages of high safety, high reliability, simple operation, perfect function and small volume; and is more adapted to the blind users.

Description

A kind of intelligent blind-guiding crutch

One, technical field

This utility model relates to a kind of crutch, the intelligent blind-guiding crutch that especially a kind of blind man uses.

Two, background technology

Along with the develop rapidly of industry in recent years, communication also fast development is got up, and the various vehicles are come into human life.Simultaneously also brought very big potential safety hazard to people easily, the blind person is all the more so.According to statistics China die from vehicle accident every year number as many as 100,000 people, the normal person is like this, still more the blind person? at present, there are 8,770,000 blind person compatriot in China, and its main guide work relies on seeing-eye dog to finish.And present seeing-eye dog mainly contains following shortcoming: one, limited amount can not be each blind person's service.Two, seeing-eye dog is animal after all, becomes very lazy sometimes, and is perhaps not obedient, even sick sometimes etc., cause providing error message to the blind person.Three, the destination that seeing-eye dog guided is fixed and seldom.Four, seeing-eye dog requires the blind person must learn to Canis familiaris L. is had a bath, carding, feed meal, handle feces etc.If out of the question words just can't be set up the relation of trust of " interdependent " with Canis familiaris L., and need user and Canis familiaris L. life more than 10 years.These shortcomings of seeing-eye dog have been brought very big puzzlement to the blind person, are cost sometimes or even with life.

Three, summary of the invention

But the purpose of this utility model provides a kind of blind man use, safe and reliable intelligent blind-guiding crutch.

This utility model solves the technical scheme that the prior art problem is adopted: a kind of intelligent blind-guiding crutch, comprise the crutch body, be provided with control system in the described crutch body, described control system comprises processor, photographic head, voice module, zigbee module, GPS module, described processor is connected with voice module with photographic head, zigbee module, GPS module respectively, described photographic head links to each other with described processor by the IO mouth with voice module, zigbee module and processor join by serial ports, and described GPS module is connected with described processor.

According to this utility model one preferred implementation: contain linux system and electronic chart in the described processor.

According to this utility model one preferred implementation: described processor is ARM9 S3C2440.

According to this utility model one preferred implementation: voice module is the LD3320 based on the unspecified person speech recognition.

The beneficial effects of the utility model are: compare with existing technology, the beneficial effects of the utility model are: safe and reliable, simple to operate, perfect in shape and function, volume are little etc.More can adapt to vast blind users.

Four, description of drawings

Fig. 1 is a module connection diagram of the present utility model;

Fig. 2 is a voice module circuit diagram of the present utility model;

Fig. 3 is a zigbee module circuit diagram of the present utility model;

Fig. 4 is a utilizing camera interface circuit diagram of the present utility model;

Fig. 5 is GPS module interface circuit figure of the present utility model.

Five, the specific embodiment

Below in conjunction with specific embodiment this utility model is described:

As shown in Figure 1, a kind of intelligent blind-guiding crutch, comprise the crutch body, be provided with control system in the described crutch body, described control system comprises processor 1, photographic head 2, voice module 3, zigbee module 4, GPS module 5, wherein processor 1 ARM9 S3C2440 and wherein implanted linux system and electronic chart.Photographic head 2 links to each other with processor 1 by the IO mouth with voice module 3, zigbee wireless network coordinator and the processor 1 of zigbee module 4 by wherein joins by serial ports, under the embedded Linux system environments on the ARM9 platform, the node of zigbee module 4 is connected with the signal of traffic lights, and described GPS module 5 is connected with described processor 1.Wherein sound identification module 3 is the LD3320 based on the unspecified person speech recognition.

Wherein, when implanting processor 1, choose the Linux2.6.12 kernel here, it can be operated on the S3C2440 hardware platform used herein, and make up the operation of file system compounding practice system by revising its kernel code in the linux system.Also to revise the U-Boot code simultaneously and be used for initiating hardware, and the startup of guiding embedded OS.

When transplanting electronic chart in processor 1, because electronic chart is a crucial ingredient in the whole embedded system, its design quality will directly have influence on the quality of these properties of product.Here use Maplnfo form map, in the embedded navigation system, utilize the map datum of Mapinfo form, need wherein geometric data and attribute data are read in the data structure that pre-defines like clockwork, so that carry out other operation on this basis.

The effect of Zigbee module 4 is as traffic lights identification, and zigbee coordinator in the Zigbee module 4 and processor 1 are joined, and each node links to each other with traffic light systems, gathers traffic lights information, and infinitely sends signal such as traffic to the zigbee coordinator.After coordinator is received signal, information is passed to processor 1, processor 1 is told the user by voice module 3.

The effect of photographic head 2 is the identification that is used for zebra crossing, sends the position of zebra crossing to processor 1 by photographic head 2, in processor 1 it is carried out following processing, and the zebra crossing profile behind edge extracting can be regarded one group of parallel lines as.Hough line conversion has the ability of detection of straight lines and reflection target line structure, the parallel lines information translation of the plane of delineation can be detected to the Radon transformation space, utilizes the characteristic information that extracts that zebra crossing are rebuild.

The Radon transform definition of two-dimensional space is:

$R(p,\mathrm{\θ})=\underset{D}{\∫\∫}f(x,y)\mathrm{\δ}(p-x\cos \mathrm{\θ}-y\sin \mathrm{\θ})\mathrm{dxdy}$

In the formula: D is entire image plane xy; (x y) is picture point (x, gray scale y) to f; P is that zero arrives collinear vertical dimension; θ is the angle of collinear vertical line and x axle.

The length of the spatial line segment of the corresponding original image of the brightness of Hough line transform domain mid point.Adopt the set of the bigger point of local maximum value detection method extraction brightness, and extract characteristic point by setting the brightness value of closing.

During actual the use, processor 1 begins to gather the signal of various piece and makes corresponding processing.Crutch is said the name of the destination that you think, pass to processor 1 by voice module 3, utilization is used for localized GPS module 5 and combines with map, like this, processor 1 can form optimal path from origin to destination automatically in the crutch on the electronic chart of having implanted, and then moves ahead by voice module 3 indication users.Go across the road if need midway, photographic head 2 can be gathered traffic information automatically, passes to processor 1, discerns zebra crossing through the date processing of system, and the zigbee node that is connected with traffic light signal can form network red street lamp information is gathered, and tells the user by voice after systematic analysis.Guarantee that user security arrives destination.

Above content be in conjunction with concrete optimal technical scheme to further describing that this utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For this utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from this utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (4)

1. intelligent blind-guiding crutch, comprise the crutch body, it is characterized in that: be provided with control system in the described crutch body, described control system comprises processor, photographic head, voice module, zigbee module, GPS module, described processor is connected with voice module with photographic head, zigbee module, GPS module respectively, described photographic head links to each other with described processor by the IO mouth with voice module, and zigbee module and processor join by serial ports, and described GPS module is connected with described processor.

2. a kind of intelligent blind-guiding crutch according to claim 1 is characterized in that: contain linux system and electronic chart in the described processor.

3. a kind of intelligent blind-guiding crutch according to claim 1 is characterized in that: described processor is ARM9S3C2440.

4. a kind of intelligent blind-guiding crutch according to claim 1 is characterized in that: voice module is the LD3320 based on the unspecified person speech recognition.

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