18results about How to "Reduce sampling error" patented technology

The utility model discloses a handheld soil sampling device for environmental monitoring belongs to soil sampling technical field, including pressing plate, the middle part of pressing plate upper surface is equipped with guide slot, the inside slide coupling of guide slot is equipped with limiting component, and the upper surface of pressing plate is fixedly connected with the positioning ring in the periphery of guide slot, through being equipped with limiting component, can fix the position that inner rod extends downward to with fixed peg, to control the position of limiting plate in the inside of sampling cylinder, thereby limiting the depth of sample that can take, guarantee the consistency of each sampling depth, reduce sampling error, promote the representativeness of sample and the accuracy of subsequent analysis result, and simultaneously, can push the sample collected from sampling cylinder downward through limiting plate, and the quick taking out of sample is convenient, to promote the operation convenience and work efficiency, through being equipped with fixed component, make the outer tube can slide to the inside of sampling cylinder after the lateral movement of force plate.

This invention discloses a method and system for thyroid and breast surgical biopsy and surgical planning using multimodal image fusion, belonging to the fields of medical image processing and surgical computer-aided planning technology. The method includes the following steps: acquiring multimodal medical image data and dynamic body posture information of the thyroid and breast regions, and organizing them into a continuous time series according to time sequence as the input basis for subsequent analysis and calculation; comparing magnetic field interference signs and brightness extension trajectories in the continuous time series frame by frame, extracting regions with abnormal signal distributions, generating a candidate list of artifacts, and identifying the suspected artifact range. This invention achieves synchronous correction of artifact regions and restoration of image geometric accuracy through time series reconstruction and spatial offset correction, ensuring the spatial consistency of the fusion model. By generating a list of coordinate anomalies and high-risk locations, it enables dynamic path review and risk identification, ensuring that the biopsy and surgical paths correspond to the real tissue, improving sampling accuracy and surgical safety.

The application discloses a power battery voltage sampling filtering method and device and a vehicle. The absolute value of the difference between the current sampling value and the sampling reference value is compared with a preset limit value LIMIT, so that the wrong sampling value can be filtered out, an array Array[N] with a length of N is established, and after the valid sampling value is obtained, the valid sampling value is added into the array Array[N] and then the data in the array Array[N] is averaged. The application can effectively overcome the pulse interference caused by accidental factors, eliminate the sampling value deviation caused by random interference, has a good inhibitory effect on periodic interference, and has high smoothing degree of filtering.

The invention discloses a temperature acquisition method and device of an energy storage system and the energy storage system, and belongs to the field of energy storage systems. The temperature acquisition method of the energy storage system comprises the following steps: acquiring a temperature value corresponding to each electric connection sheet; screening the temperature values to obtain a plurality of dominant temperatures, and determining the remaining temperature values as stealth temperatures; acquiring target sampling temperatures corresponding to the dominant temperatures from the dominant temperatures and the adjacent stealth temperatures; the adjacent electric connection sheet corresponding to the stealth temperature is adjacent to the electric connection sheet corresponding to the dominant temperature; and outputting the target sampling temperatures corresponding to the current acquisition time and the positions corresponding to the target sampling temperatures. According to the temperature acquisition method of the energy storage system, on the basis of improving the precision of temperature acquisition so as to improve the precision of subsequent logic judgment, the fault tolerance of the system is improved, and the normal operation of the system is effectively maintained, so that the maintenance efficiency of the system and the user experience are improved.

This application provides an adaptive baud rate data receiving method, transmitting method, apparatus, device, and medium. The adaptive baud rate data receiving method is applied at a receiving end, and the method includes: receiving an encoded data frame transmitted by a transmitting end; encoding the first byte of the encoded data frame, wherein the first byte has data content; sampling the encoded data frame using a sampling clock after detecting a communication start signal of the encoded data frame; decoding the sampled encoded data frame according to encoding / decoding rules to obtain the decoded first byte; determining the baud rate of the first byte based on the decoded first byte and the frequency of the sampling clock, as the baud rate of the decoded data frame; and receiving the remaining bytes of the decoded data frame on the bus according to the baud rate. Thus, it is neither necessary nor necessary to specially set any classical values.

The utility model relates to skid-mounted sampling equipment. The skid-mounted sampling equipment comprises a skid seat shell, a liquid inlet pipeline, a liquid outlet pipeline, an automatic sampler and a sample collecting tank, the automatic sampler and the sample collecting tank are both arranged in the cavity of the prying seat shell; the liquid inlet pipeline and the liquid outlet pipeline penetrate through the prying seat shell and extend into a cavity of the prying seat shell, one end of the liquid inlet pipeline is suitable for introducing crude oil, the other end of the liquid inlet pipeline is connected with a liquid inlet of the automatic sampler, and one end of the liquid outlet pipeline is connected with a liquid outlet of the automatic sampler; a sample outlet of the automatic sampler is connected with an inlet of the sample collecting tank; the liquid inlet pipeline is provided with a filter, a pump machine and a first bypass pipeline; the filter and the pump machine are sequentially arranged in the flowing direction of crude oil in the liquid inlet pipeline, the first bypass pipeline is communicated with the liquid inlet pipeline, and a manual sampling valve is arranged on the first bypass pipeline; and more than two foundation bolt holes are formed in the bottom of the prying seat shell.

The utility model belongs to the technical field of light stabilizer detection and sampling, and particularly relates to a light stabilizer detection and sampling tool which comprises a portable component, a sampling component is mounted in the portable component, and a protection component is arranged on the side of the sampling component; the sampling assembly comprises a sampling bottle, the top of the sampling bottle is in threaded connection with a cover, the top of the cover is fixedly connected with an air pipe, the top of the air pipe is fixedly connected with a micro air pump, the side of the air pipe is provided with a threaded fixing clamp, and the side of the threaded fixing clamp is in threaded connection with a nut. A connecting pipe is connected to the interior of the threaded fixing clip in a clamping manner, and a sampling pipe is fixedly connected to the top of the connecting pipe; the problem of cross contamination caused by difficulty in cleaning can be effectively avoided, a communication structure formed by the sampling tube, the connecting tube and the sampling bottle is reasonable in design, so that a sample can smoothly enter the sampling bottle in the extraction process, the risk of sample residue and blockage is reduced, and the sampling accuracy is further ensured.

The invention discloses an unattended full-automatic fuel sampling machine running state monitoring system, which belongs to the field of thermal power fire coal sampling and processing operation supervision and comprises a vehicle information identification module, a sampling strategy generation module, a sampling execution module and a sampling monitoring module, and data generated by the four modules are all uploaded to a data analysis module. And the data analysis module processes the data and issues the data, so that transmission among the four modules is realized. According to the running state monitoring system for the unattended full-automatic fuel sampling machine, through deep fusion of mechanical tampering prevention, an intelligent algorithm, a credible data link and an active prevention and control strategy, fuel sampling fairness and data reliability are improved, and meanwhile leap-type upgrading of quality control from civil defense to technical defense is achieved.

The utility model relates to the technical field of chromosome detection, and discloses a sampling device for chromosome detection, which comprises a bearing base, the bottom of the bearing base is fixedly connected with a protective rubber ring, the inside of the bearing base is fixedly connected with a limiting snap ring, and the inside of the bearing base is clamped with a motor. The output end of the motor is fixedly connected with a rotating base; a product clamping ring is connected to the top of the rotating base in a clamped mode. The number of the bearing supports is two, and the two bearing supports are symmetrically distributed left and right with the bearing vertical rod as the center, so that the weight of the whole device is dispersed, the stability of the device is improved, and especially in the operation process of the device, no matter whether the motor drives the rotating base to rotate or the air cylinder drives the sampling rubber barrel to sample, the sampling efficiency is improved. The symmetrically-distributed bearing supports can ensure that the device does not topple or shake, and it is ensured that chromosome detection sampling work is smoothly carried out.

The utility model discloses an automatic stratified sampling device for bed sand at any depth, which relates to the technical field of bed sand sampling and comprises a driving module, a power transmission module, a stratified acquisition module and a spiral drilling module. The power output end of the power transmission module is connected with the upper end of the layered collection module and the upper end of the spiral drilling module, and when the power transmission module drives the spiral drilling module to rotate, the spiral drilling module can be pressed into a riverbed and a sediment sample enters the layered collection module from bottom to top; when the power transmission module drives the layered acquisition module to rotate, the interior of the layered acquisition module can be layered or not layered. According to the utility model, accurate stratified sampling of silt with different depths can be realized, the operation difficulty is low, and the sampling efficiency is high.

The utility model relates to the field of environment detection, and discloses a multifunctional sampling head suitable for environment detection, which comprises a soil detection frame, a driving motor is fixedly mounted at the top of the soil detection frame, a driving gear is rotatably mounted on an output shaft of the driving motor, and a driving cylinder is fixedly mounted on the inner wall of the soil detection frame. A piston rod on the driving air cylinder is fixedly connected with a soil sampling head used for detecting soil, an annular plate is rotatably installed at the end of the soil detection frame, the outer wall of the annular plate is sleeved with an annular gear, and after soil sampling is completed, in the retraction process of the sampling head, a scraping plate can automatically scrape residual soil on the surface of the sampling head; and the complexity of manual cleaning and the risk of cross contamination are avoided. In addition, the driving motor drives the annular plate and the mud throwing plate to rotate, so that mud on the side edge of the scraping plate can be further removed, the cleanliness of the sampling head is ensured, and a guarantee is provided for next accurate sampling.

The utility model relates to the technical field of soil sampling, and discloses a farmland soil quality stratified sampling device which comprises a supporting column, a baffle is fixedly connected to the lower end of the supporting column, a disc is rotatably connected to the outer surface of the supporting column, a plurality of lifting columns are slidably connected to the disc in a penetrating mode, and sampling cylinders are fixedly connected to the lower ends of the lifting columns. The initial positions of the sampling cylinders are all located on the upper end face of the baffle, each sampling cylinder can be driven to respectively collect soil at different depths for storage, so that each sampling cylinder collects soil at a specific depth, the problem of inaccurate sampling depth caused by insufficient artificial experience is avoided, a sample of a target soil layer can be more accurately obtained, and the sampling efficiency is improved. Compared with the prior art, errors caused by sampling instability and uncertainty are reduced, the accuracy and representativeness of samples are ensured, more reliable data support is provided for subsequent soil analysis and research, and the situation of wrong conclusions caused by sample pollution or confusion is prevented.

The application relates to a circuit structure and working method of a micro gas sensor array, and belongs to the technical field of integrated circuits. The circuit structure comprises a multiplexer (MUX), a programmable gain amplifier (PGA), a low-pass filter (LPF), a driver (Drive), a successive approximation register analog-to-digital converter (SAR ADC), a digital control module (Digital Control) and an IIC interface for communication. In view of the demand for high precision and strong robustness of sensor signals, a common-source common-gate floating reverse dynamic amplifier is adopted in a SAR ADC noise shaping circuit, so that the insensitivity of the circuit to process, voltage and temperature (PVT) changes is significantly improved; the number of voltage-controlled delays in a time domain comparator (COMP) is increased, so that input reference noise is reduced; a hundred-nanosecond-level super-long delay module (DELAY) is integrated after asynchronous SAR logic, so that SAR ADC sampling errors are effectively reduced, and the measurement precision of the whole system is improved.

This application provides a method and apparatus for converting low-voltage differential signals into serial local bus signals, relating to the field of signal processing technology. The method includes: receiving a low-voltage differential clock signal and a low-voltage differential data signal; converting the low-voltage differential clock signal and the low-voltage differential data signal into an internal single-ended clock signal and an internal single-ended data signal, respectively; performing synchronization processing on the internal single-ended clock signal and the internal single-ended data signal to obtain a synchronized clock signal and a synchronized data signal; performing edge detection on the synchronized clock signal to generate a sampling control pulse; and converting the synchronized data signal into a serial local bus data signal according to the sampling control pulse, and outputting a serial local bus synchronized clock signal with the same frequency as the low-voltage differential clock signal. This application can save pin resources and reduce hardware costs.

This utility model relates to an output current sampling circuit for a bidirectional charging pile, comprising a current sampling circuit, a forward sampling current differential amplifier circuit, a reverse sampling current differential amplifier circuit, and a regulated output circuit. The current sampling circuit samples the current value between the bidirectional charging pile and the charging battery. The forward and reverse sampling current differential amplifier circuits identify the direction of the sampled current and transmit the forward charging current and reverse inverter current to the analog-to-digital converter (ADC) module for analog-to-digital conversion. The output current sampling circuit in this technical solution can achieve current sampling whether the bidirectional charging pile is operating in forward charging or reverse inverter mode. During charging pile operation, the output current sampling error is small, minimizing the error between the calculated sampled value and the actual current value to achieve high-precision sampling performance. When an overcurrent occurs in the charging pile, the output fuse can quickly blow to provide protection.

The application relates to a battery current probe multi-point synchronous detection structure and a rapid testing method thereof, and belongs to the technical field of battery current probe detection. Two current probes correspond to first and second current connection terminals respectively, and the two terminals are electrically isolated. The axial movable cooperation of the current probe and the probe fixing part and the elastic compression of the elastic part enable the compression process to have stroke compensation capability. The axial through hole of the current probe is integrated with the voltage probe combination part, so that voltage sampling can be arranged in the same body as the large-current probe and a stable sampling channel can be established under the same compression action, sampling errors caused by large-current wire voltage drop and connection state changes are reduced, and the temperature measuring part is arranged close to the contact end face, so that the problems that the single connection interface of the existing single-screw-column large-current probe in the hundreds-of-ampere battery test causes contact resistance fluctuation, is prone to heat and has poor adaptability, and it is difficult to simultaneously consider voltage sampling and contact area temperature acquisition under one-time compression are solved.

The invention relates to the field of petroleum and natural gas exploitation, in particular to a mixed liquid observation sampling pipe and a use method. Comprising a sampling tube; a groove is formed in the handle assembly, and the sampling tube is arranged in the groove; the sealing element is movably connected with the sampling tube; the movable part drives the sealing part to seal or open the sampling tube. The device is simple in structure and convenient to use, liquid samples can be accurately collected from the to-be-detected tank body, and the component proportion of each liquid item can be analyzed subsequently; the sampling pipe can accurately stretch into the tank body, the representativeness of a sampled sample is ensured, the sampling error is reduced, after sampling is completed, the sealing assembly can be accurately driven by the movable part to be tightly attached to the sampling pipe, reliable sealing is formed, the sealing process is rapid and effective, and the sampling efficiency is improved. The sample volatilization is effectively prevented, the integrity and accuracy of the sample are ensured, the whole sampling process is quick and convenient, and the device is suitable for field use.

This utility model relates to the field of radiopharmaceutical sampling technology and discloses a high-precision automatic sampling device for F18 radiopharmaceuticals, comprising: a sampling chamber, wherein a sampler for extracting and transporting the drug is disposed on the inner side of the sampling chamber; a feeding side chamber, disposed on the outer side of the sampling chamber, wherein a sealed channel is provided between the feeding side chamber and the sampling chamber; a feeding block, located inside the feeding side chamber, wherein an electric slide rail is provided between the sampling chamber and the feeding side chamber, and the feeding block is disposed on the electric slide rail; and several slots, wherein several fixing components are disposed on the inner side of the slots. By setting the fixing components, this application allows the device to adapt to bottles of different sizes and keep the bottles vertically and stably fixed. This design effectively adapts to bottles of various sizes, solves the problem of frequent replacement of the feeding rack in the prior art, improves the applicability and flexibility of the sampling device, increases sampling efficiency, and simplifies the operation steps.