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在远程控制电气设备中,红外信号的测量特征是控制的关键,在电气红外变弱的情况下,信号测量的准确性不高。设计并实现了一种以TD-SCDMA双极化天线为基础的微弱电气红外信号检测系统。系统采用2.4 GHz ISM A7105射频发射器,通过波特发生器的时钟频率控制红外信号的发送。对设计的ICL7650-AD620芯片模块进行信号放大处理,结合基于MAX275芯片的隔离除颤模块,通过调节内置的6个电阻,完成噪声过滤。设计的TD-SCDMA双极化天线,通过多个智能天线组成的多列辐射元,形成敏感的动态联系,对微弱电气红外信号缺失特征进行强化修复,利用AT89C51单片机对微弱电气红外信号进行确认,最终实现微弱电气红外信号准确检测。通过实验测试,该系统可以在复杂环境中,对微弱电气红外信号进行准确地检测,相对于传统系统,检测准确率提高了约49%,检测时间减小了5 s左右,有很强的实际应用价值。
In the remote control of electrical equipment, the measurement of infrared signal characteristics is the key to control, in the case of weak electrical infrared, the signal measurement accuracy is not high. A weak electrical infrared signal detection system based on TD-SCDMA dual-polarization antenna was designed and implemented. The system uses a 2.4 GHz ISM A7105 RF transmitter that controls the transmission of infrared signals through the clock generator of the Porter. The ICL7650-AD620 chip module designed for signal amplification processing, combined with MAX275 chip isolation defibrillation module, by adjusting the built-in 6 resistors to complete the noise filtering. The TD-SCDMA dual-polarized antenna is designed with multiple rows of radiating elements composed of multiple smart antennas to form a sensitive dynamic link. The missing weak electric infrared signal is enhanced and repaired. The AT89C51 microcontroller is used to verify the weak electrical infrared signals. The final realization of weak electrical infrared signal accurate detection. Through experimental testing, the system can accurately detect weak electrical infrared signals in complex environment. Compared with the traditional system, the detection accuracy is improved by about 49% and the detection time is reduced by about 5 seconds. Value.