6results about How to "Increase sampling depth" patented technology

The utility model discloses road soil condition detection equipment, which belongs to the technical field of road soil condition detection equipment, and adopts the technical scheme that the road soil condition detection equipment comprises a frame, a containing groove is formed in the bottom of the frame, an adjusting assembly is fixedly connected to the interior of the containing groove, and a sampling assembly is fixedly connected to the top of the frame; a groove is formed in the front side of the frame, and a hollow pipe is fixedly connected to the top of the frame; the utility model discloses road soil condition detection equipment, and aims to solve the problems that most of existing road soil condition detection equipment operates a soil taking screw rod through a rotating motor, so that the soil taking screw rod is used for extracting soil conditions, the existing soil taking screw rod is inconvenient to disassemble and replace in the process of sampling the soil conditions, the existing soil taking screw rod is inconvenient to extend in the process of taking soil from the soil conditions, and the working efficiency is high. The problems that in the soil sampling process, shaking can be generated, slight deviation can be generated when universal wheels make contact with the ground, and the sampling precision is reduced are solved.

The utility model discloses a sampling device for saline-alkali land remediation, and relates to the technical field of land sampling. The sampling device comprises a fixing disc, a fixing mechanism and a sampling mechanism are arranged on the fixing disc, and the fixing mechanism comprises an adjusting assembly and a fixing assembly; the adjusting assembly comprises a plurality of grooves formed in the bottom face of the fixing disc, fixing rods are fixedly connected to the inner walls of the grooves, hollow rods are rotationally connected to the fixing rods, connecting rods are slidably connected to the inner walls of the hollow rods, a plurality of inserting grooves are formed in the hollow rods and the connecting rods, and inserting pins are slidably connected to the inner walls of the inserting grooves. Through the arrangement of the fixing mechanism and the arrangement of the plurality of hollow rods, the device can adapt to the installation on the bumpy ground, so that the fixing disc can be at a flat height as much as possible, thereby facilitating sampling and improving the stability in the sampling process.

The utility model belongs to the technical field of chemical sampling, and particularly relates to a convenient sampling device for o-fluorotoluene, which comprises a sampling barrel, a suction pump, a motor, a handle and a liquid outlet pipe, the suction pump is mounted at the top of the sampling barrel, the liquid outlet pipe is connected with the liquid discharge end of the suction pump, the motor is mounted on the upper surface of the suction pump, the handle is mounted on the side wall of the motor, and the handle is connected with the liquid outlet pipe. A lengthened pipe is movably inserted into an inner cavity of the sampling barrel, an electromagnetic valve is fixedly mounted at the bottom of the lengthened pipe, the sampling barrel and the lengthened pipe are both of a transparent structure, and a lead screw is rotationally arranged on one side of the sampling barrel; the screw rod pushes the extension pipe to extend out of the sampling barrel through the screw barrel under the action of the surface threads, the length of the sampling barrel can be conveniently adjusted during use, meanwhile, the sampling depth can be measured during sampling, the sampling barrel and the extension pipe are both made of transparent materials, and after the sampling barrel and the extension pipe are taken out of a storage tank, the sampling barrel and the extension pipe can be conveniently taken out. The colors of o-fluorotoluene at different depths can be observed, and the use is more convenient.

The invention discloses a method for detecting the content of impurity elements in an electronic-grade cobalt precursor, and relates to the technical field of detection. The detection modes and detection parameters of the ICP-MS / MS instrument on different impurity elements, such as RF power, atomization gas flow velocity, plasma gas flow velocity, compensation gas flow velocity, auxiliary gas flow velocity, eight-level rod deflection voltage, energy discrimination and the like, are comprehensively adjusted, so that the serious interference of the electronic-level cobalt precursor matrix on part of impurities is effectively solved; the accuracy and sensitivity of the detection method are improved, meanwhile, the detection limit of impurity elements is effectively reduced, and the method has excellent practicability.

This invention discloses a switched-capacitor circuit based on charge transfer. The sampling control terminal of the sampling clock generation circuit is electrically connected to the sampling switch control terminal of the sampling switched-capacitor array. The control terminal of the transfer drive array is connected to the drive control circuit, which controls the on / off state of each switch in the transfer drive array. The output terminal of the transfer drive array is electrically connected to the storage switched-capacitor array. Continuous cyclic sampling is performed through the sampling clock generation circuit and the sampling switched-capacitor array, and the cyclically sampled voltage values ​​are transferred to the storage switched-capacitor array through the transfer drive array. The output terminal of the storage switched-capacitor array is electrically connected to the quantization circuit. The quantization readout control circuit receives the readout data from the quantization circuit and outputs the data serially to an external device. This circuit can circumvent the contradiction between sampling depth and analog bandwidth, significantly improve the bandwidth of the analog bus, and increase the sampling depth of the switched-capacitor array.

The invention relates to the technical field of geotechnical engineering detection and geological exploration, in particular to a bottom mud columnar sampler operation control test system and method, and the method comprises the steps: collecting operation state feedback data, and recognizing the current operation stage and resistance state of a sampler; when it is recognized that the sampler is in the extraction stage and the cable traction tension exceeds a preset tension threshold value, frequency conversion excitation control logic is triggered; identifying a resonant frequency point of the current pipe wall and an external medium system; generating a vibration control instruction to reduce the friction resistance of the interface; the change rate of the environment pressure outside the pipe is monitored in real time; generating a pneumatic compensation instruction, adjusting the pressure of the cavity in the tube, and maintaining the difference value between the pressure of the environment outside the tube and the pressure of the cavity in the tube to be within a preset allowable error range of the sample maintaining pressure difference; according to the invention, sample slippage or bedding damage caused by pressure imbalance is effectively avoided, and the integrity of the columnar sample is guaranteed.