A cable-free data transparent transmission device for a static penetrometer

Abstract

The invention discloses a cableless data unvarnished transmission device for a static penetrometer. The cableless data unvarnished transmission device is characterized by comprising a receiving module and a transmitting module. The transmitting module is mounted in a probing rod and penetrates into the ground along a static penetration probe. A battery of the transmitting module is respectively connected with a first power module and a high voltage power module. A first microprocessor, a high-speed mos pipeline driving circuit, an exciting pulse generating circuit and a transmitting transducer are in signal connection in sequence. The high-voltage power module is respectively connected with the first microprocessor and the exciting pulse generating circuit. The first power module is connected with the first microprocessor. The first microprocessor and the transmitting transducer are respectively connected with the static penetration probe and an ultrasonic receiving transducer. The transmitting module is used for modulating probe data into an ultrasonic signal and transmitting the ultrasonic signal along the probing rod. The receiving module is used for receiving the ultrasonic signal from the probing rod, demodulating original data of the probe and outputting the original data to the static penetrometer. The cableless data unvarnished transmission device replaces an original cable to conduct data transmission, so that the cableless static penetration test process is realized.

Description

technical field [0001] The invention relates to a data transparent transmission device, in particular to a data transmission device for a cableless static penetrometer, which can be applied to the technical fields of engineering geological survey and marine survey. technical background [0002] Static penetration testing is an in-situ testing method in geological survey, which is suitable for soft soil, general clay, silt and sandy soil. reliability of the results. [0003] The static penetrometer currently used is composed of a probe, a multi-section probe rod and a pressure cap. The multiple sensors integrated in the probe can collect various geological parameters during the drilling process. The exploration data is passed through the multi-section probe rod. The nine-core cable is transmitted to the ground equipment. During the static penetration test, it is inconvenient for the probe to be connected to the cable. When connecting the probe rods, several personnel are of...

AI Technical Summary

Problems solved by technology

For radio transmission, since the inner diameter of the probe rod is generally less than 20mm, the radio can only achieve short-distance transmission in this 20mm diameter air column, which significantly limits the exploration depth

For optical communication transmission, first of all, due to the high cleanliness required by the photoelectric receiving head, the maintenance cost is increased; and also when the length of the probe rod is long, the probe rod is prone to bending to a certain extent, while in a homogeneous medium, the light is Strict straight-line transmission, so the communication reliability will drop significantly when the exploration depth increases

In addition, there is an obvious defect in these two cableless transmission methods, that is, when the static penetrating probe is working on the seabed, the probe rod will be filled with seawater, and light and radio will attenuate too quickly due to the transmission in water basically impossible to communicate

[0005] From the above content, it can be seen that the current domestic and foreign researches on the cableless transmission of data in CPT can not meet the actual needs well.

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