2results about How to "Solve signal attenuation" patented technology

This invention provides an infrared beam anti-interference device and method for sowing monitoring, belonging to the field of agricultural sowing technology. The device includes a main control module, a pulse drive module, an infrared beam module, and a signal processing module. The main control module is electrically connected to the pulse drive module, the infrared beam module, and the signal processing module. The main control module is used to output timing control and high-frequency pulse signals, receive detection signals and determine the next sowing state, and simultaneously complete control processing including parameter configuration and timing synchronization. The pulse drive module is used to execute high-frequency pulse signals from the main control module and supports time-division multiplexing control. The infrared beam module is configured to use high-frequency pulse signals for signal transmission and reception and electrical signal conversion under the time-division multiplexing mechanism. The signal processing module is used to process the electrical signals into detection parameters that can be recognized by the main control module. The anti-interference method is based on the above-mentioned anti-interference device. This solution can significantly improve signal recognition accuracy and greatly reduce stray light interference.

The application discloses a high signal-to-noise ratio signal acquisition method and device for electrocardio-cardiac sound integration, and belongs to the technical field of biomedical signal acquisition. The circuit adopts two instrument amplifiers to collect electrocardio signals and cardiac sound signals respectively, and fuses a programmable gain amplifier-low pass filter fusion circuit and an analog-to-digital converter through a switch array time-sharing multiplexing. The instrument amplifier integrates chopping modulation and an auxiliary loop to suppress noise and improve input impedance; the fusion circuit adopts a switched capacitor topology to realize programmable adjustment of gain and bandwidth. A clock manager uniformly controls channel switching and circuit parameter reconfiguration. The application realizes high signal-to-noise ratio synchronous acquisition of double-mode signals, and has low power consumption, small area and good wearable integration characteristics.