Ultrasonic mud-water interface measuring device and method

• Main Author: REN HONGGANG
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2017
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to an ultrasonic mud-water interface measuring device and method. The method includes: transmitting an ultrasonic signal to a to-be-measured settling tank, receiving an echo signal, performing amplitude limiting on the echo signal, performing two-stage differential amplification, performing amplitude limiting on a feedback signal after the first-stage differential amplification, and performing detection on the signal after the second-stage differential amplification to obtain a mud-water interface condition. The method has the advantages that the transmitting gain control technology is used, the dynamic range and mud layer distinguishing ability of the signal are increased greatly under the premise that the signal-to-noise ratio is increased in advance, and the method is applicable to more working conditions. 本发明涉及种超声波泥水界面测量装置及方法，该方法包括：向待测量沉淀池发射超声波信号并接收回波信号，对所述回波信号进行限幅后进行两级差分放大，对第级差分放大后的反馈信号进行限幅，对第二级差分放大后的信号进行检波后获得泥水界面状况。本发明采用发射增益控制技术，在优先提高信噪比的前提下大大提高了信号的动态范围和泥层分辨能力，从而能够适应更多的工况。