Headband infrared multidimensional detecting instrument for blind person
A head-mounted, detector technology, used in applications, head coverings, optical device exploration, etc., can solve problems such as high cost and inconvenience
Inactive Publication Date: 2012-07-25
邝亦工
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Problems solved by technology
The more advanced detectors that have been seen in the newspapers have the tongue-sensing type and the artificial optic nerve type installed directly in the eye. These are either inconvenient or costly, and most blind people cannot use them.
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[0020] Such as Figure 1 to Figure 5 As shown, a head-mounted infrared multi-dimensional detector for the blind includes a small head-mounted transmitting / receiving screen 6 with two infrared emitting units 3 and twenty-four infrared receiving units 4, and the head-mounted The dot matrix electrode 7 made of special flexible materials such as composite conductive rubber is attached to the forehead of the blind wearer connected to the type transmitting / receiving screen 6. The detector uses modulated infrared light as the detection source, and transmits / receives the head-mounted type through the CPU. The control and measurement of the transmission and reception of the receiving screen 6, the information of the detected obstacles in the interval is distributed to the corresponding dot matrix electrodes 7 through twenty-four electronic switches in the form of pulse stimulation current stimulation at any time, and communicated to the point The corresponding skin point in the array e...
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The invention discloses a headband infrared multidimensional detecting instrument for blind person, comprising a minitype headband launching / receiving screen with two infrared emission units and 24 infrared receiving units and a dot matrix electrode which is made from special flexible materials such as composite conductive rubber, is connected with the headband launching / receiving screen and is stuck to the forehead of a blind wearer. The detecting instrument uses modulated infrared light as a detection source, emission and reception of the headband launching / receiving screen are controlled and detected by a central processing unit (CPU), and information concerning detected barriers in an interval is distributed to corresponding dot matrix electrodes by the 24 infrared receiving units in the form of impulse stimulation electric current and is transmitted to corresponding skin points in the dot matrix electrodes, wherein the impulse stimulation electric current is bidirectional asymmetric burst pulse current (50 mus) with adjustable strength, and belongs to alternating low frequency current; and an electric switch is controlled by the CPU and is synchronously corresponding to a receiving scanning element. The invention has the advantages of low cost and more convenient use.
Description
technical field [0001] The invention relates to a detector for the blind, in particular to a head-mounted infrared multi-dimensional detector for the blind. Background technique [0002] At present, there are many types of instruments used for the blind to assist in detecting surrounding objects, but the amount of information actually conveyed to the blind is often very small. For example, a detector made of the principle of ultrasonic reflection requires the user to continuously explore in all directions The strength of the object to judge the distance of the object. The more advanced detectors that have been seen in the newspapers have the tongue-sensing type and the artificial optic nerve type installed directly in the eye. These are either inconvenient or costly, and most blind people cannot use them. [0003] The head-mounted infrared multi-dimensional detector for the blind provided by the present invention can conveniently convey the general multi-dimensional informa...
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IPC IPC(8): G01V8/20A42B1/00A61F9/08
Inventor 邝亦工
Owner 邝亦工