Abstract
The aural infrared transponder is one kind of remote monitor which in the present domestic television often uses, it has the structure to be simple, the cost low, does not have characteristics and so on disturbance, low noise, therefore the infrared transponder's application is more widespread. This article has mainly studied the aural channel's function and the composition, and carried on to sound channel's electric circuit has analyzed in detail, realized the aural signal repeater for the infrared transponder to provide the application basis; Introduced the infrared transponder's composition and the principle of work, and elaborated the infrared emission electric circuit and the infrared accepting circuit's work process in detail. In the familiar infrared transponder's principle and in the application foundation, has designed one kind of simple practical aural infrared transponder, and component aspect which as well as uses from various part of electric circuit's constitution, separately did to the infrared emission electric circuit and the infrared accepting circuit elaborated carefully, and explained the respective electric circuit's work process. This article finally has given detailed showing to system's debugging process as well as the debugging process's matters needing attention, and aims at some deficiencies which in this design proposal exists, gave some improvement comment.
key word: Aural, infrared transponder, launcher, receiver