Long-distance infrared remote-controlled device and method used for embedded equipment

An embedded device and infrared remote control technology, which is applied in the field of electronic information, can solve the problems of low main frequency, unavailable decoding, and difficulty in universality of infrared receiving equipment, and achieve the effect of solving remote infrared remote control decoding

Inactive Publication Date: 2010-06-02
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the relatively low main frequency of embedded devices, when non-real-time operating systems such as linux are used, the interrupt response delay is even far greater than the level dura

Method used

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  • Long-distance infrared remote-controlled device and method used for embedded equipment
  • Long-distance infrared remote-controlled device and method used for embedded equipment

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Embodiment

[0029] A remote infrared remote control device for embedded equipment, including an infrared remote control signal transmitter and an infrared remote control signal receiver; the infrared remote control signal receiver is composed of an integrated infrared remote control receiving head and embedded equipment that requires remote infrared remote control functions ; The output pin of the integrated infrared remote control receiver is connected to a GPIO pin of the embedded device; the ground pin of the integrated infrared remote control receiver is connected to the ground wire of the embedded device; the power lead of the integrated infrared remote control receiver The pin is connected to the power supply of the embedded device.

[0030] The embedded device refers to an embedded device based on ARM core and architecture or other low power consumption core and architecture.

[0031] A remote infrared remote control method for embedded devices is as follows:

[0032] In the infra...

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Abstract

The invention discloses long-distance infrared remote-controlled device and method used for embedded equipment, belonging to the technical field of electronic information. The device comprises an infrared remote-controlled signal emission device and an infrared remote-controlled signal receiving device. In the remote-controlled method, after adding a sync character in front of a binary encoding a button corresponds to, the infrared remote-controlled signal emission device converts the binary encoding into a high-low electric level combination corresponding to an infrared signal encoding mode; then a 38k sinusoidal wave modulates the binary encoding and an infrared emitting head sends out the modulated binary encoding; after receiving the signal modulated by the 38k sinusoidal wave, an integral infrared receiving head of the infrared remote-controlled signal receiving device converts the signal into a pulse signal consisting of a high-low electric level; the pulse signal is output to a GPIO lead foot of an embedded equipment through an output lead foot of the integral infrared receiving head; the pulse signal consisting of the high-low electric level triggers an interruption of the GPIO port; during interruption processing program, lasting times of a high electrical level and a low electrical level are calculated out through timing; thus decoding can be carried out, and the high-low electric signal is deciphered into binary data.

Description

technical field [0001] The invention relates to a remote infrared remote control device and method for embedded equipment, belonging to the technical field of electronic information. Background technique [0002] Today's long-range infrared remote control is widely used. The encoding method of general long-range infrared remote control usually adopts the standard NEC or RC5 standard, and the binary data and control characters are marked with the difference between the high and low level durations. The general infrared decoding algorithm is to determine the duration of the level by timing in the interrupt program, and then decode. However, due to the relatively low main frequency of embedded devices, when non-real-time operating systems such as linux are used, the interrupt response delay is even far greater than the level duration in standard infrared coding, making decoding impossible; in addition, embedded The specificity of the device interface also often makes it diffi...

Claims

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Application Information

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IPC IPC(8): G08C23/04
Inventor 袁东风陈飞林贺魏斌石祚夫王恒徐超
Owner SHANDONG UNIV
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