45results about How to "Comprehensive sampling" patented technology

The invention discloses a device and method for inductive current sampling of a bridge-free PFC circuit. The device comprises a first sampling unit, a second sampling unit and a third sampling unit. The device for inductive current sampling of the bridge-free PFC circuit is connected with the bridge-free PFC circuit. The first sampling unit is in series connection with a first switch tube of the bridge-free PFC circuit and is used for sampling a current passing through the first switch tube and obtaining first sampling signals V1; the second sampling unit is in series connection with a second switch tube of the bridge-free PFC circuit and is used for sampling a current passing through the second switch tube and obtaining second sampling signals V2; one end of the third sampling unit is connected with the grounding end of the bridge-free PFC circuit, the other end of the third sampling unit is connected with the negative output end of an PFC capacitor of the bridge-free PFC circuit, and the third sampling unit is used for sampling a current passing through a booster diode of the bridge-free PFC circuit and obtaining third sampling signals V3.

The present invention provides a microbial sample processing device, comprising: a machine body provided with a machine chamber and a sealed movable door; and a sealed housing, a stretchable airbag, a sample tray, a mechanical arm, a bar code scanner, a liquefier, culture dishes, a gas-temperature sensor, and a temperature control device which are arranged in the machine chamber, wherein the sample tray is provided with a plurality of sample seats, the sample seats are used for placing the culture dishes, the liquefier is communicated with the culture dishes, each culture dish is provided with culture plates and a streak-inoculation pen used for streak inoculating the sample in the culture dishes from the liquefier on the culture plate. The microbial sample processing device is reasonable in structure, fast and safe, reliable and efficient, can complete the whole process of mixing and liquefying, streak inoculation, dilution and separation, and incubation of microbial community automatically in a one-stop manner, and can replace manual labor and ensure biological safety.

The invention relates to a device for measuring the diameter of a large shaft working piece by non-contact-type online measurement, which solves problems of heavy detection tools, inconvenient operation and low measurement precision and measurement efficiency during precisely measuring a machined workpiece with large diameter. Three guide rails are arranged on a tripod head of a measurement base and connected by screws and threads; an upright post is mounted on the base and sleeved with four guide rail sliding blocks and provided with locking screws; sliding plates which are fixed on upper and lower guide rail sliding blocks have same length and provided with respective sensors connected by locking screws; two guide rail sliding blocks sleeved in the middle of the upright post are provided with sliding plates and sensors connected by locking screws; the length of sliding plates of the middle guide rail sliding blocks is smaller than the upper sliding plate and the lower sliding plate; the sensors are connected with a computer by cables; symmetric supporting seats are fixedly mounted on a calibration base, connected with a rotating shaft and provided with bearings; the center of the rotating shaft is provided with a large disc and a small disc the diameters of which are different; an adjustable-speed motor is connected with a bracket and fixed on the calibration base; the shaft of the adjustable-speed motor is connected with one end of the rotating shaft the other end of which is connected with a rotating speed coder fixed on the bracket of the calibration base; and a measurement base and the calibration base are connected by a large platform.

The invention belongs to the technical field of elevator equipment and an intelligent control technology, and relates to an elevator cloud system for achieving lifelong responsibility of a manufacturer for an elevator and an elevator operation control method of the elevator cloud system. The elevator cloud system for achieving lifelong responsibility of the manufacturer for the elevator and the elevator operation control method of the elevator cloud system solve the technical problem that an existing technology is not reasonable enough in design. The system comprises an elevator cloud and a remote monitoring center, the elevator cloud comprises a cloud processing module, the cloud processing module is connected with an elevator communication module and a wireless communication module, the elevator communication module can be connected with an elevator control system and conduct data exchange with the elevator control system, the wireless communication module can be connected with the remote monitoring center through a wireless communication network and conduct data exchange with the remote monitoring center, and the cloud processing module is further connected with a cloud storage. The elevator cloud system and the elevator operation control method have the advantages that effective monitoring and management can be achieved on the elevator, the use safety of the elevator is guaranteed, and the fault maintenance can be conducted in time; the wireless communication module enables information of a broken-down elevator to be fed back to the remote monitoring center in time, the remote monitoring center can assign people to maintain the broken-down elevator in time, the maintenance cost is lowered and the repairing efficiency is increased virtually, and the practicability is high.

The invention discloses a congestion level analysis platform based on double communication data, which belongs to the communication field. The congestion level analysis platform based on double communication data comprises a remote sensing data receiving device, a field data receiving device and a main control device, wherein the remote sensing data receiving device receives a road section remote sensing image of a target road section sent by a remote sensing satellite. The congestion level analysis platform based on double communication data is characterized in that the field data receiving device receives detection information sent by a radar probe in the target road section; moving track images of all vehicles in the target road section are drawn according to the detection information by the main control device; and the main control device determines the congestion level of the target road section according to the remote sensing image of the road section and the moving track images of all vehicles in the road section. In view of the technical problem that the precision of the detection result is not high by the single-factor road section congestion degree detection mode in the prior art, the satellite remote sensing image and the field radar detection are combined through a weighting mode, level judgment is carried out on the congestion degree of each target road section, and more valuable navigation data can be provided.

The invention relates to a fault moment real-time recording method and system of a modular UPS. The method includes steps: 1) the system is powered on, and a monitoring device acquires operation waveform data of the modular UPS in real time; 2) whether there is remaining storage space in a fault waveform memory is checked, if not, new acquired waveform data covers original data in the fault waveform memory, and if yes, new obtained waveform data is stored; 3) according to the operation waveform data of the modular UPS, whether a fault occurs is determined; if yes, the waveform data before and after a fault point in the fault waveform memory is stored in an EEPROM, and step 4) is executed; and if not, step 2) is returned to; and 4) the waveform data before and after the fault point is converted to digital waveforms, the state during occurrence of the fault is restored, and the reason of fault occurrence is analyzed. Compared with the prior art, the method and system is advantaged by visuality and accuracy, data acquisition diversity, and real-time monitoring.

The invention discloses an online monitoring and evaluation method and system for the shielding effectiveness of a shielding layer of a communication cable. The method comprises: on the basis of a cable segmented frequency sweeping measuring method, fault identification and positioning of a cable shielding layer are carried out; with a loop impedance measurement method, the state of a grounding resistor of the cable shielding layer is determined; comprehensive analysis and reverse evaluation of the shielding effectiveness of the cable are carried out by using an algorithm. According to the invention, reasonable quantitative evaluation of the shielding effectiveness, which can not be evaluated easily in the prior art, of the shielding layer of the communication cable is realized; and a problem of the safety field of the communication cable shielding is solved. Meanwhile, with measurement of various cable physical parameters, systematic, holistic and complementary evaluation of the cableshielding layer is realized.

The invention relates to a surface scanning probe system and a spectrometer. The surface scanning probe system comprises a first shell, a surface scanning optical module, a MEMS module, and an objective lens module, wherein the shell is provided with a light guide hole so as to enable an excitation light beam to irradiate into the first shell, and the excitation light beam comes from a light passing hole of a Raman detection system of the spectrometer; the surface scanning optical module is mounted to the first shell and includes a reflection element; the MEMS module is fixed to the first shell and includes an MEMS driver and an MEMS reflector, and the MEMS driver drives the MEMS reflector to move; and the objective lens module is fixed to the first shell and includes a collimating lens, and the excitation light beam entering from the light guide hole is reflected by the reflecting element, then irradiates towards the MEMS reflector and is reflected by the MEMS reflector into a plurality of parallel light beams which irradiate towards an image side surface of the collimating lens at different angles. Through the technical scheme, the surface scanning probe system provided by the invention can realize multi-point detection scanning, and is beneficial to improving operation safety and detection precision of the spectrometer.

The invention discloses a random sampling system for granular materials. The random sampling system comprises a random sampler, a sample conveying device and an equant sample divider, wherein the random sampler is arranged on a necessary channel for a material during unloading and is used for quantitatively extracting a sample according to a set frequency in the unloading process of a whole vehicle; the sample conveying device is used for conveying samples collected by the random sampler to the equant sample divider; the equant sample divider is used for further equally dividing the collectedsamples into a plurality of parts, and one part is taken as an inspection sample. Therefore, the random sampling system for granular materials can be used for random sampling continuously in the wholematerial unloading process, and the sample is equally divided again at the tail end, so that the consistency of the obtained sample and the whole material is improved, the condition of the whole material can be better represented, the phenomena of non-uniform sampling quantity, poor representativeness and artificial counterfeiting are avoided, and the material sampling is more reasonable, more comprehensive and more scientific.

The invention discloses an air flow type spore trapper which has the advantages that the area is adjustable, spores and pollen are comprehensively collected in the circumferential direction, and the taking out of the collected spores and pollen is facilitated. The trapper is small in volume and can adapt to different environments. The trapper is characterized in that a middle casing pipe is placedin a caching case and located in the middle of the caching case; one end of the middle casing pipe is placed in the middle of the bottom of the caching case; a communication hole is formed in the middle of the bottom of the caching case and is communicated with the middle casing pipe; the diameter of the middle casing pipe is gradually decreased from bottom to top; the diameter of the caching case is gradually increased from bottom to top; a plurality of through holes are formed in the bottom of the caching case; the diameter of each of the through holes is gradually decreased from bottom totop; a dustproof mesh enclosure is sleeved on the bottom of the caching case; a round table is placed in the middle of the dustproof mesh enclosure; one end of a connecting rod is placed on the roundtable; the other end of the connecting rod penetrates through the communication hole and is placed into the hollow casing pipe.

The invention relates to movable metering, detecting and processing equipment. The equipment comprises a movable frame, a loading assembly and a detection assembly; the loading assembly is installed on the movable frame; and the detection assembly is installed above the loading assembly. When PH detection is performed on afield unfamiliar water area, the following problems appear:a, when sampling detection is carried out on the field water area, after water source sampling is carried out manually, PH test paper needs to be sheared manually to monitor the acidity and alkalinity of the water source, as a result, the number of operation steps of staff is increased, and manpower is wasted; and b when the field water area is detected, a portable device is light in weight, as a result, the portable device is prone to toppling over on the uneven ground, and the device is prone to damage, and experimental materials are prone to damage. With the movable metering, detecting and processing equipment adopted, the above problems can be solved.

The invention relates to a medical multi-point implantable sampling tube. The medical multi-point implantable sampling tube comprises an implantation hose, wherein a plurality of sampling holes are formed in the wall of the implantation hose. The medical multi-point implantable sampling tube is characterized in that the extension direction of the sampling holes is consistent with the extension direction of the sampling tube, a sampling line is arranged in each sampling hole, one end of each sampling line extends out of the sampling hole for certain length, two ends of the implantation hose are respectively an implantation end and an exposure end, the opening of the sampling hole is positioned on the exposure end, the extension part of each sampling line is an extraction end, a plurality of sampling windows are arranged on the outer wall of the implantation hose and are communicated with the sampling holes, and the sampling lines are exposed out through the sampling windows. The plurality of sampling lines are arranged in the wall of the implantation hose in a penetration manner, after the implantation hose is implanted into the human body at once, the implantation hose does not need to be moved, the wounded parts inside the human body can be sampled only by extracting the sampling lines, then testing and measuring are carried out, and no secondary harm is caused to the wounded parts.

The invention discloses a wall flatness detection device and relates to the technical field of wall flatness detection; the device is used for detecting the wall flatness accurately and is convenient to carry and flexible in structure. A device body is pressed onto a wall through three support legs, a first and second rotary barrels are rotationally mounted on a base, a spring, a steel ball and a force sensor are arranged on the second rotary barrel, the steel ball and the wall to be detected is pressed mutually, the stress is transmitted to the force sensor through the spring, and the flatness of the wall can be known clearly by the force sensor sensing the force magnitude and value distribution. More samples can be obtained by adjusting the rotating radius of the spring and steel ball. The supporting legs are telescopic and can be folded corresponded to the base, and carrying is facilitated.

The invention relates to a coiled tube type sludge sampling and activity evaluation device for an anaerobic reactor and a working method thereof. The device comprises a coiled tube sampling system, asludge testing system and a PLC control system. The coil sampling system comprises the anaerobic reactor, a stainless steel hose, a support frame and a positive and negative constant-speed coil-metering pump. The sludge testing system comprises a densimeter, a pH/T tester, a storage reaction tank with a stirrer, a pressure gauge, a methane/carbon dioxide concentration tester, a methane emptying pipe with a control valve, a metering pump and a detection liquid storage tank. The PLC control system includes a PLC central controller. The whole sampling period comprises two times of full-height sampling of the anaerobic reactor from bottom to top and from top to bottom, thus ensuring the representativeness, comprehensiveness and data accuracy of the sampled sludge.

The invention discloses a broadcast transmitter switching device and a switching method thereof. The switching device comprises a mechanical carrier and a control unit, the mechanical carrier comprises a cabinet body, a resistor body framework and a fan support are arranged on the lower portion in the cabinet body, a first resistor body and a second resistor body are arranged on the resistor body framework, a first fan and a second fan are arranged on the fan support, a first partition plate is arranged on the upper portion of the resistor body framework, and an external interface board is arranged on the first partition plate. The upper part of the cabinet body is provided with a second separator plate, the upper part of the second separator plate is provided with a coaxial converter, the lower part of the second separator plate is provided with an emergency support, the cabinet body is provided with a front door and a rear door, a front door panel is provided with a switch, an indicating lamp and a high-frequency power meter, and an external interface board and the emergency support are arranged at the inner side of the rear door. The method can be effectively applied to switching of broadcast transmitters, stable and efficient switching among the host, the standby, the transmitting antenna and the dummy load can be realized, and the method is stable and reliable in performance, wide in market prospect and convenient to popularize and use.

The invention aims to provide a visual detection method for the motor, which can realize full-automatic appearance detection and greatly improve the appearance detection effect and efficiency of the motor. Four detection stations are adopted, and the motor is sequentially conveyed into the four detection stations through a conveying mechanism. The detection of small shell damage, terminal deformation, reverse installation of a coding magnet, poor terminal height, unbuckled small shell of the pressing claw of the motor, missing of a pressing claw of the motor, missing of the coding magnet, poor height of the coding magnet, omission of the coding magnet, reverse pasting of a label, missing or smudginess of a label two-dimensional code, no size of the two-dimensional code and the edge of the label in a specification range, repeated labeling, wrong labeling positions, inclined labeling, labeling omission, writing of a large shell, screw hole damage, shaft damage, gear oxidation, tapping omission of a large shell, foreign matters in screw holes, gear damage and other defects can be carried out. The method can be applied to the field of appearance detection of products such as motors and inductors.

The invention relates to an implantable end sampling tube for medical use, which comprises an implanted hose, wherein a plurality of sampling holes are formed in the wall of the implanted hose; the extension direction of the sampling holes are consistent with the extension direction of the sampling tube; a sampling thread is arranged in each sampling hole; both ends of the sampling threads extend out of the sampling holes by certain lengths; two ends of the implanted hose are respectively an implanted end and an exposed end; and the extension parts of the sampling threads, located at the implanted end, are sampling ends, and the extension parts, located at the exposed end, are drawing ends. The sampling tube disclosed by the invention, by inserting multiple sampling threads in the tube wall of the implanted hose, can sample affected parts inside a human body just by drawing the sampling threads without moving the implanted hose which is implanted into the human body in one time, and then the sampling tube can implement test and detection, so as to avoid secondary hurt to the affected parts; and by virtue of tube holes formed in the inner wall of the implanted hose, liquid is guided into the human body, so that drugs can be conveyed into the human body and body liquid and the like can be discharged out of the human body.

The invention belongs to the technical field of old and abandoned salt well recycling, and discloses a method for testing the seal performance of salt wells. The method includes steps of 1 well groupcollaboration tests, 2 well group leakage tests and 3 well group pressure-tight tests. The method has the advantages that the collaboration tests, the leakage tests and the pressure-tight tests are successively carried out, and accordingly the method is reasonable; large quantities of test data are sampled, sampling points are scientific, and test and evaluation bases are effective; attention is paid to heat balance of salt caverns in test procedures, rock salt corrosion, plastic deformation of the salt wells and the like are prevented in the test procedures, and accordingly test results are accurate.