WO2014005409A1 - Audio-visual integration handicapped helping device - Google Patents

Description

 Audio-visual integrated disability device

 [0001] The present invention relates to the field of electronic information technology, and in particular, to an audio-visual integrated disability device. Background technique

 [0002] The World Health Organization estimates that there are between 40 million and 45 million blind people worldwide. Our country had conducted a survey of visual disability in the 1980s. The results show that there are nearly 13 million patients with visual disability in China, of which about 5.5 million are blind and about 7.5 million are low vision. In 2006, there were more than 60 million disabled people in China, of which more than 27 million were deaf and dumb. In China, there are about 450,000 new blind people and 1.35 million low vision each year. That is, one blind person and three low vision patients will appear every minute. If we do not take effective measures, by 2020, the number of visually handicapped persons in China will be four times that of the current one, and will soon reach more than 50 million. If they can provide convenience for these blind people, their lives will change a lot.

 [0003] A blind Klein guide is currently available on the market for blind people, and the guide is based on the difference frequency principle. However, compared to the biological sonar echo signals of bats and dolphins, the characteristic information of the surrounding objects that the difference frequency signal can reflect is still very limited. There are also many similar blind guides that can be used to detect the distance of the front target, but the specific guide to the blind guide cannot give a specific answer. At the same time, the guide blinder has a longer training time.

 [0004] A biological sonar detecting device and a detecting method thereof are disclosed in the Chinese Patent Publication No. CN201010574072.9, and the patent consists of three simple sonar transceiver processing modules A, B and C, wherein A The B module transmits the bionic sonar signal and collects the echo signal, and does not introduce the image acquisition module. At the same time, the C module does not introduce the speech synthesis technology, so that it cannot be used for the majority of blind people.

[0005] It is an object of the present invention to provide an audiovisual integrated disability device that provides blind people with more detailed information on the front end.

In order to solve the problems in the background art, the present invention adopts the following technical solutions: An audio-visual integrated disability device, which comprises an audio-visual integrated dual sensor module, a processing control module and an audio output module, and the audio-visual integration An output end of the dual sensor module is connected to an input end of the processing control module, and an output end of the processing control module is connected to an input end of the audio output module; the audiovisual integrated dual sensor module includes a bionic sonar transceiver Module and image acquisition module; The image acquisition module includes an image sensor, a conditioning circuit, and an analog-to-digital conversion unit, and an output end of the image sensor is connected to an input end of the conditioning circuit, and an output end of the conditioning circuit and an input of the analog-to-digital conversion unit Connected to the end, the output end of the analog-to-digital conversion unit is connected to the input end of the processing control module;

The audio output module includes an audio driving and conditioning circuit, a left channel player, and a right channel player, and outputs of the audio driving and conditioning circuit are respectively associated with an input end of the left channel player and the right The inputs of the channel player are connected.

 [0007] As an improvement, the processing control module is composed of a single microprocessor or a connected dual microprocessor, a plurality of microprocessors, and the microprocessor can be from a DSP, an ARM, an FPGA, a single board, a single chip microcomputer, an intel or an AMD, etc. Select from the processor.

 [0008] As an improvement, the microprocessor based on the dual microprocessor and multi-microprocessor processing control module may be of the same type or may be shaped. For example, two DSP modules can form a homo-type dual-microprocessor processing control module, an FPGA module and a DSP module can form a hetero-type dual-microprocessor processing control module, and two FPGA modules and one DSP module can constitute a hetero-type multi-microprocessor. Process control module.

Compared with the prior art, the invention has the following beneficial effects: 1. The audio-visual integrated dual-sensor module not only includes the emission and acquisition of the bionic sonar signal, but also introduces the image acquisition module, which can be more accurate. The front detection target is detected, identified and located. 2. The processing control module introduces image recognition processing technology, which enables high-speed processing and control. 3. The audio output module not only includes the original signal projection technology but also introduces speech synthesis technology. 4. The patent utilizes the existing technology, and combines user requirements and engineering practice to design a set of audio-visual integration disabled with complete functions, high integration, compact structure, easy to carry, good real-time, easy to maintain and easy to use. Device. 5. This patent is easy to upgrade, maintain, re-develop and extend functionality.

DRAWINGS

 1 is a schematic structural view of the present invention.

2 is a schematic view of a specific embodiment.

detailed description

[0012] In the specific embodiment, an audio-visual integrated disability device of a special-type dual-microprocessor processing control module composed of an FPGA module and a DSP module is taken as an example. Referring to FIG. 1 and FIG. 2, the following technical solutions are specifically adopted: Integrated disability device, which includes an audio-visual integrated dual sensor module D, processing control The output module of the audio-visual integrated dual-sensor module D and the input end of the processing control module E are connected to each other, and the output end of the processing control module E and the audio output module F The inputs are connected.

 [0013] Referring to FIG. 1 and FIG. 2, the audio-visual integrated dual-sensor module D includes a bionic sonar transceiver module and an image acquisition module. Among them, the bionic sonar transceiver module is used to transmit sonar signals to indoor and outdoor detection targets, and to collect echo information in real time. For the emission of bionic sonar signals, the wave source is designed by direct digital frequency synthesis (DDS), by reading The value in the waveform memory is taken to generate a digital signal of a certain frequency, which is then converted into an analog signal by the DAC. The DAC uses TI's chip TLV5638 with a bit width of 12bits. The ultrasonic transducer captures the analog signal, and the conditioning circuit adjusts the captured analog signal voltage to the convertible voltage range of the analog-to-digital converter, and implements two-channel analog-to-digital conversion using TI's chip THS1206. The image acquisition module is configured to collect image information of indoor and outdoor detection targets, including an image sensor, a conditioning circuit, and an analog-to-digital conversion unit. The image sensor output is an analog quantity, and the analog voltage collected by the image sensor is adjusted to the mode by the conditioning circuit. The digital converter can be converted to a voltage range, and the analog-to-digital converter uses TI's chip TVP5150.

 Referring to FIG. 2, the special-shaped dual-microprocessor processing control module E includes an FPGA module and a DSP module, the FPGA module is responsible for audio transmission and reception, and the DSP module is responsible for algorithm processing and image acquisition. The FPGA uses Alter's chip EP2C8Q208, which has 127 ports for 10 ports and 36 M4k memory spaces for internal use. In this embodiment, the FPGA module is connected to the bionic sonar transceiver module, and its function is to detect the presence or absence of a target in front, and to perform simple processing on the acquired front target information. The DSP module uses TI's chip TMS320DM642. The main function of this module is algorithm processing, including processing of ultrasonic echo signals and image processing of image data.

 [0015] Wherein, when the processing control module E adopts the structure including the FPGA module and the DSP module, one of the following two specific implementation schemes may be selected:

The specific implementation scheme 1 includes a bionic sonar transceiver module transmitting a sonar signal to the front and collecting an echo, and the collected echo analog signal is transmitted to the FPGA module through the conditioning circuit and the analog-to-digital conversion unit; the image acquisition module collects image information. The collected analog signal is transmitted to the FPGA module through the conditioning circuit and the analog-to-digital conversion unit; the FPGA module realizes high-speed data transmission through the EDMA and the DSP module.

[0016] Embodiment 2 includes a bionic sonar transceiver module transmitting a sonar signal to the front, collecting an echo, and the collected echo analog signal is transmitted to the FPGA module through the conditioning circuit and the analog-to-digital conversion unit; The image acquisition information is collected by the acquisition module, and the collected analog signal is transmitted to the DSP module through the conditioning circuit and the analog-to-digital conversion unit; the FPGA module realizes high-speed data transmission through the EDMA and the DSP module.

[0017] The audio output module F includes an audio driving and conditioning circuit, a left channel player and a right channel player, and the output of the audio driving and conditioning circuit processes the information processed by the processing control module respectively The left channel player and right channel player output to two headphones.

 [0018] Finally, the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting, and other modifications or equivalents to the technical solutions of the present invention will be made by those skilled in the art without departing from the technical solutions of the present invention. The spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims

Claim  An audio-visual integrated disability device, comprising: an audio-visual integrated dual-sensor module, a processing control module, and an audio output module, wherein an output of the audio-visual integrated dual-sensor module and an input of the processing control module The terminals are connected to each other, and an output end of the processing control module is connected to an input end of the audio output module; The audio-visual integrated dual-sensor module includes a bionic sonar transceiver module and an image acquisition module; the image acquisition module includes an image sensor, a conditioning circuit, and an analog-to-digital conversion unit, and an output end of the image sensor and an input of the conditioning circuit Connected to the end, the output end of the conditioning circuit is connected to the input end of the analog-to-digital conversion unit, and the output end of the analog-to-digital conversion unit is connected to the input end of the processing control module; The audio output module includes an audio driving and conditioning circuit, a left channel player, and a right channel player, and outputs of the audio driving and conditioning circuit are respectively associated with an input end of the left channel player and the right The inputs of the channel player are connected.  2. An audio-visual integrated disability device according to claim 1, wherein the processing control module is constituted by a single microprocessor, a dual microprocessor or a multi-microprocessor.  3. The audio-visual integrated disability device according to claim 2, wherein the single microprocessor uses a DSP, an ARM, an FPGA, a single board machine, a single chip microcomputer, an intel or an AMD microprocessor. 4. The audio-visual integrated disability device according to claim 2, wherein the dual microprocessor is selected from a DSP, an ARM, an FPGA, a single board, a single chip microcomputer, an intel or an AMD processor, A connected microprocessor can be of the same type or a different type, and the two processors share the processing of viewing and listening information. 5 . The audio-visual integrated disability device according to claim 4 , wherein the dual microprocessor forms a homogenous processing control module for two DSP modules, or an FPGA module and a DSP module form a special-shaped processing control Module.  The audio-visual integrated disability device according to claim 2, wherein the multi-processor is three or more selected from a DSP, an ARM, an FPGA, a single-board computer, a single-chip microcomputer, an intel or an AMD processor. Microprocessor, these three connected microprocessors can be identical or heterogeneous, sharing multi-channel video and audio information processing.