Infrared transmission circuit, infrared receiving circuit and infrared transceiver system
A technology of infrared reception and infrared emission, applied in electromagnetic transceivers, free space transmission and other directions, can solve the problems of inapplicability in two-way communication, expensive infrared communication decoding chips, easy to interfere with each other, etc., to achieve infrared communication anti-interference ability The effect of strong, optimized circuit design, and reduced material cost
Inactive Publication Date: 2014-04-02
SHENZHEN XINGUODU TECH
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[0003] In the prior art, the infrared transceiver system is mainly realized by an infrared communication decoding chip. The infrared communication decoding chip is expensive, and the transceiver circuits are integrated together, which is easy to interfere with each other. It is not suitable for occasions that require two-way communication.
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[0032] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0033] Such as figure 1 As shown, an infrared transmitting circuit, which includes a serial port transmitting terminal and an infrared light-emitting tube L1A, the output terminal of the serial port transmitting terminal is connected with a first inverter U1A and a second inverter U2A in sequence, and the infrared light-emitting tube L1A The anode of the infrared light emitting tube L1A is connected to the output end of the first inverter U1A, and the cathode of the infrared light emitting tube L1A is connected to the output end of the second inverter U2A. It also includes a third inverter U3A and a fourth inverter U4A, the input end of the third inverter U3A is connected to the output end of the serial port transmitter, the output end of the third inverter U3A is connected to the infrared light emitting ...
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The invention discloses an infrared transmission circuit, an infrared receiving circuit and an infrared transceiver system. The infrared transmission circuit comprises a serial port transmitting terminal and an infrared luminous tube, wherein a first phase inverter and a second phase inverter are sequentially connected to the output end of the serial port transmitting terminal; the positive electrode of the infrared luminous tube is connected with the output end of the first phase inverter, and the negative electrode of the infrared luminous tube is connected with the output end of the second phase inverter. The infrared receiving circuit comprises an infrared receiving tube, wherein a small signal amplification module, a signal amplitude limiting module, a level conversion module and a serial port receiving terminal are sequentially connected to the output end of the infrared receiving tube. The infrared transceiver system comprises the infrared transmission circuit and the infrared receiving circuit, wherein the infrared receiving circuit is used for receiving an infrared signal from the infrared transmission circuit. According to the infrared transmission circuit, the infrared receiving circuit and the infrared transceiver system, discrete components are used for transmitting and receiving the infrared signal; the circuits and the system have the advantages of high anti-infrared communication interference capability and cost saving.
Description
technical field [0001] The invention relates to a wireless transmission system, in particular to an infrared receiving circuit. The invention also relates to an infrared transmitting circuit and an infrared transceiver system. Background technique [0002] Infrared transmission is a point-to-point wireless transmission method. Infrared transmitter is a light-emitting device that can directly convert electrical energy into near-infrared light (invisible light) and radiate it out. It is mainly used in various photoelectric switches and remote control transmitting circuits. The infrared receiver is a device that can receive infrared signals and independently complete the process from infrared reception to output compatible with TTL level signals. It is suitable for various infrared remote control and infrared data transmission. [0003] In the prior art, the infrared transceiver system is mainly implemented by an infrared communication decoding chip. The infrared communication...
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IPC IPC(8): H04B10/40H04B10/11
Inventor 杨维先尹奇红
Owner SHENZHEN XINGUODU TECH