44results about How to "Detection stability" patented technology

The invention provides a flying dust monitoring system based on an unmanned aerial vehicle. The flying dust monitoring system comprises an unmanned aerial vehicle system, a flying dust monitoring sensor system, a network transmission module and a cloud platform data processing system. According to the flying dust monitoring system, the flying dust data of a construction site field can be accurately collected in real time, the defects of manual fixed-point type flying dust monitoring at present are eliminated, and the problems of the real-time hysteresis, the space limitation, the low accuracyand the like of a traditional flying dust monitoring system are overcome.

The invention relates to an automobile frame aerodynamics test system and a test method. The automobile frame aerodynamics test system comprises a test base, a supporting device, a locking device anda fan, wherein a square groove is arranged on a middle portion of the test base; the outer end of the square groove of the test base is symmetrically provided with an arc groove; the front side wall of the square groove on the test base is provided with a controller; the square groove of the test base is internally provided with the supporting device; the top part of the supporting device is provided with the locking device; the fan is mounted at the right top part of the test base; and the supporting device comprises a rotating motor, a rotating supporting plate, a rotating sliding column, aguiding cylinder, a guiding mechanism, a supporting cylinder, a supporting connecting plate and a detecting mechanism. The problems that when the existing frame is subjected to aerodynamics test, different types of frames can not be locked, the frame placing position needs to be adjusted and put straight manually, multi-angle aerodynamics test on the frame can not be carried out, detection of theframe aerodynamics test is inaccurate and the like can be solved.

The invention discloses an impact type pulse triggering time synchronization device. The impact type pulse triggering time synchronization device comprises a knocking mechanism, a pulse generation circuit, a pulse conditioning circuit and a pulse output interface circuit, which are connected in sequence, wherein the knocking mechanism comprises a telescopic knocking hammer; the telescopic knocking hammer is connected with a potentiometer through a metal contact; the potentiometer is connected with a normally closed switch of the pulse generation circuit; the normally closed switch is controlled to be turned on or turned off by applying a force to the telescopic knocking hammer; the pulse generation circuit is used for generating a pulse signal according to the turn-on or turn-off of the normally closed switch; the pulse conditioning circuit is used for conditioning the pulse signal into a specific wave signal according to electrical parameters of a trigger interface of a to-be-synchronized sensor and outputting the specific wave signal to the to-be-synchronized sensor through the pulse output interface circuit. The impact type pulse triggering time synchronization device is simple in structure, convenient to carry and use and high in generality, and can be used for time synchronization between motion perception sensors such as an inertial navigation system (INS) or an inertial measurement unit (IMU) and other types of sensors; the time synchronization accuracy can be guaranteed.

The invention relates to a CYP2C19 genotyping detection kit, which comprises 4 primers, 7 conventional probes, and 2 probes connected with nano gold particles. The primers are SEQ ID NO. 1 and SEQ ID NO. 2, SEQ ID NO. 3 and SEQ ID NO. 4; the conventional probes are SEQ ID NO.5 to SEQ ID NO. 11, or reverse complement sequences of SEQ ID NO. 5 to SEQ ID NO. 11; the base composition of the probes linked to the gold nanoparticle is as shown in SEQ ID NO. 12 to SEQ ID NO. 13, or reverse complement sequences of SEQ ID NO. 12 to SEQ ID NO. 13. The CYP2C19 genotyping detection kit can realize visualized, low-cost, and highly sensitive CYP2C19 genotyping assays.

In the phase error detection circuit of the synchronous clock extracting circuit for extracting the clock synchronized with the reproduced data, the cross reference value generating part (72) uses the rising phase error data (S3) calculated by the phase error calculating part (71) as rising The crossing reference value (S5) is input to the ascending crossing detection unit (70a), and the calculated descending phase error data (S4) is similarly output to the descending crossing detection unit (70b) as the descending crossing reference value (S6). The two intersection detection parts (70a, 70b) respectively calculate the difference between the regeneration data value of the sample point and the above-mentioned input cross reference value (cross deviation value) (S5, S6), when one of the two difference values ​​of the continuous sample points When one is negative and the other is positive, the rising and falling cross detection signals are output. Therefore, the capture band is expanded.

The invention provides a server network card interaction test method and system, a terminal and a storage medium. The server network card interaction test method comprises the steps of setting a system pressurization script and simulating a system pressure environment by utilizing the system pressurization script; calling an flint instruction to refresh the test network card firmware and verifyinga refreshing result by utilizing an ethtool instruction; executing iperf pressurization through the test network card, so that the network utilization rate of the test network card is kept above a preset threshold value; and collecting bandwidth performance data abnormal information and a system error log, and if the bandwidth performance data abnormal information and the system error log are notcollected, judging that the test is passed. According to the invention, the stability of the network card in a complex environment can be effectively detected, and more stable and efficient service of the network card in actual application of a server is ensured.

The invention discloses a quality detection method for a traditional Chinese medicine preparation for strengthening foundation and improving eyesight, and belongs to the technical field of medicine. According to the quality detection method disclosed by the invention, the existing quality standards for the preparation for strengthening foundation and improving eyesight are correspondingly improved, identification for safflower carthamus, eugenol and myrobalan is added on the basis of the original standards, and a measurement item for the content of hydroxysafflor yellow A in the main medicine, namely, safflower carthamus in the preparation is added, so that the quality and stability of the preparation can be effectively detected. The improved quality standards can be used for effectively detecting the quality of the product, and really reflecting the safety, effectiveness and controllable quality of the medicine, thus guaranteeing the clinical efficacy of the medicine, and the body health of a vast number of patients.

The invention relates to the technical field of hydraulic support testing and discloses a hydraulic support testing device for simulating operating conditions of an inclined coal seam and detecting tilting and slipping prevention performances, stability and reliability of a hydraulic support in the inclined coal seam. The hydraulic support testing device comprises carrier roller devices, roller discs and a body frame, the carrier roller devices are fixedly arranged on a foundation, the roller discs are rotationally mounted on the carrier roller devices, and the body frame is arranged on lateral sides of the roller discs. The body frame comprises a base, a top beam and vertical columns, wherein the base is fixedly connected with the roller discs, the top beam is fixedly connected with the roller discs, and the vertical columns are connected between the base and the top beam. The hydraulic support testing device further comprises a moving platform, guide rails and a loading platform, wherein the moving platform is in slide connection with the vertical columns, the guide rails are arranged on the moving platform and perpendicular to the vertical columns, the loading platform is in slide connection with the guide rails, and a testing space for hydraulic supporting testing is formed between the loading platform and the base. By the technical scheme, a tested hydraulic support can berotated to a tilting angle corresponding to the inclined coal seam, and complex loading of the hydraulic support is realized.

The invention discloses a test method of network connection stability and an apparatus thereof. The method comprises the following steps of under a data transmission state, carrying out data transmission condition detection and acquiring a data transmission information statistics table, wherein the data transmission information statistics table records a time point and data transmission information corresponding to the time point; according to the data transmission information statistics table, determining an interruption time quantum of network connection interruption; and according to the interruption time quantum, determining stability of network connection. In the technical scheme, the interruption time quantum of network connection interruption can be automatically determined and network connection stability of a terminal is determined too; and operation of a test person is reduced and convenience is brought for the test person.

The invention provides an air traffic control voice multi-channel automatic test system. The system comprises a hardware control box, test software, a radio comprehensive tester, an interface card anda test computer. The test computer is provided with application software and a radio comprehensive tester driving program. By means of an advanced R&S CMA180 radio comprehensive tester and matched software and hardware which are independently researched and developed, the system can be applied to automatic testing of voice channels of equipment such as an air traffic control interphone and avery high frequency radio station, breaks through a limitation that conventional voice testing mainly aims at a single seat, a single channel and single equipment, can be expanded to 10 channels to the maximum extent, reduces human intervention, and improves test accuracy, reliability and working efficiency. Configuration can be selected according to equipment characteristics, more abundant test means are provided, safe and reliable operation of the air traffic control ground-air communication equipment is effectively guaranteed, and a high application value and economic benefits are achieved.

The invention provides performance detection equipment and a detection method for an automobile electronic heat insulation material, and relates to the field of material performance detection.The performance detection equipment comprises an adjusting mechanism and a detection mechanism, the heat insulation material is placed in an inner cavity of an assembly ring, and the fit degree of the device to the heat insulation material is increased through shrinkage of the distance of the whole device; air blowing is carried out to an inner cavity of an inner rotating rod, air blows the side end of a heat insulation material, air speed detection mechanisms are installed at the two ends of the inner rotating rod, reverse impact wind power is generated when the air blows to the side end of the heat insulation material when the air blows to the inner end, and the air permeability of the heat insulation material is judged by capturing the air speed of the air. By pressing the side end of the mounting disc, the middle connecting transverse cylinder is pushed towards the side end, the assembling column is matched with the inner connecting disc, the steps are repeated, the first adjusting mechanism generates airflow differential change, and the stability of the heat insulation material under the airflow differential condition is detected.

The invention discloses a spindle error correction and detection integrated device of a numerical control machine tool. The spindle error correction and detection integrated device comprises a workbench. A correction assembly is mounted on one side of the top end of the workbench. A slag removal mechanism is mounted at the bottom end of the correction assembly. The spindle error correction and detection integrated device is scientific and reasonable in structure and safe and convenient to use; the correction assembly is arranged, through the action of a correction chamber, a four-claw chuck, amilling cutter fixing block and a milling cutter head, measurement of milling can be worked out conveniently according to the measured unbalance amount, and therefore the unbalance amount can be removed precisely; through the action of a sliding groove, a transverse sliding block and a longitudinal sliding block, the milling cutter head can move conveniently in two dimensions, and the unbalance amount of different planes of a spindle is removed; the slag removal assembly is arranged, and through the action of a filter plate and a funnel, waste generated during milling can be conveniently collected and cleared away; through the action of a suction pipe, waste can enter the filter plate and the funnel conveniently through suction force, and therefore the clearing rate of the waste is increased; and operation is simple, and use is convenient.

A method of evaluating a fluid from a subterranean formation drawn into a downhole tool positioned in a wellbore penetrating the subterranean formation is provided. This method involves drawing fluid from a formation into a flowline, measuring at least one property of the fluid in the flowline and detecting stabilization of the property or properties of the fluid in the flowline. An electrochemical sensor for measuring contents of a fluid or gas at high pressure and/or high temperature may be used.