36results about How to "Achieve self-correction" patented technology

The present invention relates to a measurement method and a device for the phase delay quantity and the fast axle direction of a birefringent optical device, which can well solve the problem of poor measurement accuracy in a measurement process. The method is that a pair of orthogonal dual-frequency lasers emitted from an optical laser is divided into reflected light and transmitted light; in a reflected light path and a transmitted light path, through the birefringence of a measured sample measuring point after the polarizing angle of at least one path is changed, and then through the measured sample measuring point after returning, the phases of the polarized components of the two frequencies in the light beams are delayed differently, thus leading to the phase change; then after being synthesized by an analyzer, the two light paths are respectively transformed into a reference beat frequency signal and a measurement beat frequency signal with different phase differences; at least two times of phase differences are obtained, and then the phase delay quantity and the fast axle direction of the measured point can be calculated; the method and the device of the present invention make the measurement of two parameters become simple and eliminate the principle error and the system error.

The invention discloses a vertical shearing surface annular shearing testing instrument capable of exerting confining pressure. The testing instrument comprises a frame, a frame support shearing box,a hydraulic servo loading system, a monitoring sensing system and a shearing power system, wherein the shearing box comprises an inner shearing box and an outer shearing box; the inner shearing box issteady without movement; the outer shearing box is capable of rotating annularly; the shearing power system is connected with the outer shearing box and is capable of driving the outer shearing box to rotate annularly; the hydraulic servo loading system comprises a normal pressurizing device and an annular force conduction plate; the normal pressurizing device is vertically inserted in the middleof the inner shearing box and is used for providing normal stress; the annular force conduction plate is mounted above the shearing box and is used for conducting vertical confining pressure; the monitoring sensing system is used for sensing shearing data of a soil sample in real time and used for transmitting the shearing data to a control device; the control device is used for qualitatively controlling the normal stress of the normal pressurizing device and the vertical confining pressure of the annular force conduction plate. The testing instrument has great significances in studying shearing resistance properties of long-runout landslide slip soil and revealing evolutionary process and mechanisms of landslide.

The invention provides an insecticidal lamp monitoring method based on IOT. The method comprises steps of acquiring work parameters of an insecticidal lamp, detecting whether a pedestrian exists in an infrared ray image in the work parameters, taking photos and recording pedestrian appearance by a camera device when the pedestrian exists in the infrared ray image, detecting whether the insecticidal lamp goes wrong according to the received work parameters, adjusting a work state of the insecticidal lamp based on a preset module when the insecticidal lamp goes wrong corresponding to the work parameters, and / or displaying an alarm signal when the photo is received and the insecticidal lamp corresponding to the work parameter goes wrong. The work state of the insecticidal lamp can be monitored by the above method, and the work state of the insecticidal lamp can be adjusted according to the preset model; and besides, when the insecticidal lamp is stolen, an alarm signal can be displayed and informed of the user, so safety coefficient of the insecticidal lamp is enhanced and the insecticidal lamp cannot be easily stolen.

The invention provides a ratio type fluorescent molecularly imprinted paper chip, a preparation method and application thereof and belongs to the technical field of material science and engineering and micro-fluidic chips. The method comprises the following steps that: 1, the surface of cellulose paper is sequentially modified with CDs and an APTES-NBD conjugate fluorescent material; difenoconazole imprinted holes are formed in the surface of the cellulose paper through a surface imprinting technology, so that fluorescent molecularly imprinted paper can be prepared; and the fluorescent molecularly imprinted paper is fixed on a microfluidic substrate of a three-dimensional structure, so that the ratio type fluorescent molecularly imprinted paper chip can be obtained. The microfluidic rapiddetection paper chip of the present invention can realize the rapid detection of difenoconazole and has the advantages of low toxicity, portability, high efficiency, economical efficiency and the like.

The invention relates to a teaching word pinyin tone pronunciation correction device based on voice recognition. The device comprises a start button, a voice collection module, a control module, a touch screen and a pronunciation module, student press start button, gENERATING CORRECTION ACTIVATION SIGNAL, the control module controls the touch screen to display all words contained in the word database; selecting a certain word through a touch screen; the control module starts the voice collection module according to the words and obtains pinyin with tones of the words, the voice collection module acquires original pronunciation voice signals of the words, the control module obtains target pronunciation voice signals of the words, and the pronunciation module outputs the original pronunciation voice signals and the target pronunciation voice signals. The device can realize real-time self-correction of phonetic tone pronunciation of words through actual pronunciation and correct pronunciation, does not need special guidance of teachers, is relatively high in efficiency, and is high in applicability, so that the learning efficiency and the learning performance of students can be greatly improved.

The invention discloses a humidity sensor chip. The sensor chip comprises a humidity sensitive module, a measuring circuit module, an MCU and a storage module. Two different physical properties of thehumidity-sensitive material change along with the change of the moisture content of the humidity-sensitive material. The measuring circuit module measures two different physical properties of the humidity sensitive material at the same time, and transmits a measurement result to the MCU; a standard parameter library is stored in the storage module, and standard curves of two different physical properties of the humidity-sensitive material changing along with the change of the moisture content of the humidity-sensitive material are recorded in the standard parameter library; the MCU performs indexing, comparison and operation on the standard curves recorded in the standard parameter library according to results obtained through measurement to obtain an ambient air humidity reference valuea and an ambient air humidity reference value b to be measured respectively; the root mean square values or average values of the a and b are output as a result.

The invention relates to a blood glucose prediction model self-correction method based on near-infrared light, and belongs to the technical field of biomedical signal acquisition and processing. According to the method, the difference degree of two adjacent blood glucose predicted values detected based on a human body near infrared spectrum at a corresponding moment is used as a judgment basis; and according to the corresponding relation between the difference degree and an allowable value, on the basis of the human body blood glucose short-term fluctuation regularity, the living habits and the health states ofindividuals, a blood glucose detection abnormal point is automatically identified, a blood glucose noninvasive detection system automatically reminds a user to input the diet condition and the medication condition of the current day; the current physiological and pathological state of a testee is known by means of questioning, the system automatically evaluates and judges the generation reason of a blood glucose abnormal value, eliminates accidental factors; different blood glucose prediction model self-correction processes are enabled according to different reasons generated by the difference degree, so that it can be ensured that a blood glucose prediction model is always consistent with the current physiological and pathological state of the testee. According to the method of the invention, the precision stability of the noninvasive blood glucose detection system during long-time application can be maintained.

The invention discloses a method for obtaining a change condition of aggregate-mortar bonding strength in concrete. The method comprises the following steps of step (1), carrying out splitting tensilestrength test on a concrete test piece; step (2), acquiring an image of one splitting surface; step (3), counting a splitting aggregate and a desizing aggregate in the splitting surface image, and calculating the area of the splitting aggregate and the desizing aggregate; step (4), calculating the proportion of the area of the splitting aggregate and the areas of all aggregates; and step (5), fitting a relation between the proportion of the splitting aggregate and the splitting tensile strength, and therefore obtaining the change condition of the aggregate-mortar interface strength. The method for obtaining the change condition of the aggregate-mortar bonding strength in the concrete provided by the invention is reasonable in design and convenient to operate, provides a reference basis for obtaining the change condition of the concrete aggregate-mortar interface strength by using a low-cost technical means, and the reference basis is combined with the utilization of the statistics andcan be completely self-corrected, so as to finally form a guide standard in the industry. Therefore, the method provided by the invention well achieves the balance between technology and cost, and isvery suitable for large-scale popularization and application.

The invention is suitable for the technical field of intelligent wearing, and particularly relates to a wearable device and system based on the Internet of things. The system comprises a controller arranged in the wearable device, a sensor which is connected to the controller and used for collecting user sign parameters, a communication module which is connected to the controller and used for transmitting the sign parameters, a central control computer which is interconnected with the communication module and used for monitoring a user monitor state and a mobile terminal which is interconnected with the central control computer and used for interacting with the user health state. The sign parameters of a user are collected through various sensors, the physical state of a wearer can be understood easily according to the monitored sigh parameters, when the physical state of the wearer has problems, corresponding alerting signals can be triggered according to the situation of the wearer, the monitoring cost of the wearer is reduced, and the purpose of accurately monitoring is achieved.

The invention discloses a monitoring system of an industrial robot. The monitoring system comprises a heating module, an inductor, a communication module, a central control computer, a terminal and analarm module. The heating module comprises heat conduction nets evenly arranged on the inner wall of power transmission and transformation equipment, air heating pipes and a power source used for providing power, and the power source is connected with the heat conduction nets and the air heating pipes. The monitoring system has the advantages that by means of the technical scheme, self heating can be achieved under the condition of low temperature, and therefore normal operation of the equipment is guaranteed, the heating module is controlled by the central control computer, and automation isachieved.

The invention provides a GIS distribution device monitoring method based on the Internet of things. The GIS distribution device monitoring method based on the Internet of things comprises steps that, work index parameters of GIS distribution devices are acquired; whether a disturbance signal is contained in the work index parameters is determined; when the disturbance signal is not contained in the work index parameters, the work index parameters are transmitted to a central control computer; whether the GIS distribution devices corresponding to the received work index parameters are in fault is detected, when the GIS distribution devices corresponding to the received work index parameters are in fault, the work states of the GIS distribution devices are adjusted according to a preset model; work index parameters before and after adjustment are displayed in a graph mode. Through the GIS distribution device monitoring method, a problem of error alarming during monitoring caused as the disturbance signal is contained in shake-up signals in a traditional monitoring mode is solved, the monitoring accuracy rate is improved, moreover, each GIS distribution device can be timely and accurately monitored, according to the work state of each GIS distribution device, faults can be timely discovered and processed.

The invention discloses a virtual-reality combined virtual experiment construction method based on VISA. The method comprises the following steps of S10, acquisition and processing of VISA data; S20,contrast of virtual data and actual data; S30, establishment of a data model; S40, virtual-reality combined troubleshooting way; S50, confidence interval judgment; S60, troubleshooting type and trouble displaying. The traditional experimental result-driven experimental teaching organization mode is changed through virtual experiment interaction operation information collection and the correlationwith the experimental operation and summary and like processed based on the data, the experiment is converted into a staged target set, and an information contrast model is established for the measurement data and the preview data, thereby realizing the self-correction of the experiment process.

The invention provides a control system and method for flue dynamic air distribution cooperating with SNCR denitration. The control system is composed of a sensing unit, an executing unit and a feedback adjusting unit, wherein the sensing unit comprises a temperature, NO concentration, CO concentration and NH3 concentration detection module, the execution unit comprises a secondary air execution layer, an over fire air execution layer and an SNCR execution layer, and the feedback adjustment unit comprises an instruction layer and a data layer. The control method comprises: detecting the parameters by the sensing unit; analyzing the data and generating a control instruction through the feedback adjustment unit, and storing detection parameters and the control instruction; and dynamically regulating and controlling the air distribution state and the reducing agent injection state through the execution unit. The control system and the control method have a feedback regulation function to realize dynamic regulation and control of combustion and denitration and self-correction of the system, and can be widely applied to the technical field of low-nitrogen combustion and SNCR denitration.

The invention relates to a secondary element (10) which has a longitudinal axis (L) and two opposite ends (12, 14), comprising a filter medium (16) arranged around the longitudinal axis (L), wherein one of the ends (14) is open and the opposite end (12) is connected to a closed end disk (20) in a sealed manner, and the end disk (20) has a connecting means (22) which when mounted as intended is provided to interact with a connecting means (156) of a support tube (150) of a filter system (100) in order to fix the secondary element (10) on the support tube (150). The invention further relates to a filter system (100) comprising such a replaceable filter secondary element (10).

An anti-interference monitoring system for electric transmission and transformation equipment includes an inductor, a communication module, a filtering module, a central control computer, a mobile terminal and an alarm module. The inductor is used for collecting work index parameters of the electric transmission and transformation equipment. The communication module is used for transmitting the work index parameters processed by the inductor. The filtering module is used to filter interference wave in the parameters collected by the inductor, the inductor is connected with the filtering module, and the central control computer is connected with the filtering module. The communication module, the mobile terminal and the alarm module each are connected with the central control computer, andthe alarm module and the mobile terminal are also connected with the communication module. The defects that in the prior art, hidden problems cannot be detected in real time and cannot be found timely, the detection frequency is limited by the number of inspectors, the labor cost rises, transformer burn events occur easily, and outage for maintenance causes inestimable loss to power users are effectively overcome.

The present invention discloses an electric power transmission and transformation device monitoring system including a sensor, a communication module, a central control computer, a terminal, and an alarm module. The advantages of the electric power transmission and transformation device monitoring system are that various working index parameters of an electric power transmission and transformation device are collected through various kinds of sensors; digital-to-analog conversion is performed on the received various working index parameters via a controller; whether each of the working parameter parameters is normal is determined; if not normal, corresponding alarm signals are generated and sent to the central control computer for display through the communication module while at the same time alarms are given out; when a kind of work indicators parameters change, the kind of work indicators parameters are correspondingly adjusted according to an expert system in the central control computer, possibility of false alarms which are given out when a conventional monitoring method is adopted can be eliminated, monitoring accuracy can be improved, and a function of self-correction can be fulfilled.

The method and device for measuring the phase delay of the birefringent optical device and the fast axis direction of the present invention can better solve the problem of poor measurement accuracy in the measurement process. The method is: a pair of orthogonal dual-frequency lasers emitted by the laser are split into Reflected light and transmitted light; one of the two paths of reflected light and transmitted light passes through the measurement point of the sample to be measured after changing the polarization angle, and then turns back and passes through the measurement point of the sample to be measured, so that the two frequencies in the beam The phase of the polarization component is delayed differently, causing a phase change; then the two paths of light are converted into a reference beat signal and a measurement beat signal with different phase differences after being synthesized by a polarizer; at least two phases are obtained difference, the phase delay of the measurement point and the direction of the fast axis can be calculated; the method and device of the invention make the measurement of the two parameters simple and eliminate the principle error and system error.

The invention discloses a monitoring system for anti-freezing electric transmission and transformation equipment. The monitoring system comprises a heat supply module, a sensor, a communication module, a central control computer, a mobile terminal and an alarming module, wherein the heat supply module comprises heat conducting nets and air heating pipes uniformly arranged on an inner wall of the electric transmission and transformation equipment and a power supply used for supplying electric power; the power supply is connected with the heat conducting nets and the air heating pipes; the sensor is used for collecting working index parameters of the electric transmission and transformation equipment; the communication module is used for transmitting the working index parameters processed by the central control computer; the central control computer is used for monitoring the working state of the electric transmission and transformation equipment; the mobile terminal is used for inquiring a monitoring result; and the alarming module is used for reminding the electric transmission and transformation equipment of overhauling. The monitoring system can effectively overcome the defects of the prior art that the existing hidden danger cannot be detected in real time and cannot be found in time, the detecting frequency is limited by the quantity of inspectors, the labor cost is increased, the event of burning the transformer is easily caused and the uncountable loss is brought to the electricity customer by outage maintenance.

The invention relates to the technical field of distribution robots, and particularly discloses a drive advancing device of an intelligent shopping distribution robot. The drive advancing device comprises a drive advancing mechanism and a drive control unit for controlling the drive advancing mechanism. The drive advancing mechanism comprises a robot outer shell, the bottom face of an inner cavityof the robot outer shell is fixedly connected with a fixed seat, the top face of the fixed seat is fixedly connected with a movable motor, the output end of the movable motor is fixedly connected with a first transmission belt wheel, the surface of the first transmission belt wheel is in transmission connection with a second transmission belt wheel through a transmission belt, the inner wall of the second transmission belt wheel is fixedly connected with a wheel axle, and the two ends of the wheel axle penetrate through the inner wall of the robot outer shell and stretch out of the robot outer shell and are fixedly connected with wheels. By means of an air pump and arc-shaped sleeves, when the robot topples over, the robot falling on the ground is overall supported, the robot can continueto advance, and the effects that the robot is automatically corrected after toppling over, and it is guaranteed that the distribution time is not affected are achieved.

The invention relates to a secondary element (10) having a longitudinal axis (L) and two opposite ends (12, 14), said secondary element comprising a filter medium arranged around said longitudinal axis (L) (16) wherein one of said ends (14) is open and the opposite end (12) is hermetically closed by a closed end plate (20), and said end plate (20) There is a connecting piece (22) arranged to cooperate with a connecting piece (156) of the support pipe (150) of the filter system (100) when assembled as intended, so as to connect the secondary element (10) fixed on the support tube (150). Furthermore, the invention relates to a filter system ( 100 ) having such a replaceable secondary element ( 10 ).

The invention provides a ratio-type fluorescent molecularly imprinted paper chip and its preparation method and application, belonging to the field of material science and engineering and microfluidic chip technology, comprising the following steps: sequentially modifying CDs and APTES-NBD conjugate fluorescent materials On the surface of cellulose paper, difenoconazole imprinted holes were formed on the surface of cellulose paper by surface imprinting technology to prepare fluorescent molecularly imprinted paper, which was immobilized on the microfluidic substrate with three-dimensional structure to obtain Ratio-type fluorescent molecularly imprinted paper chip; the invention realizes the rapid detection of the pesticide difenoconazole, and develops a microfluidic rapid detection paper chip with the characteristics of low toxicity, portability, high efficiency, and economy.

The invention discloses a rotor pressing wheel adjusting mechanism applied to rotor spinning. The rotor pressing wheel adjusting mechanism comprises a pressing wheel mounting plate, an adjusting pieceand an adjusting bolt assembly, wherein a first adjusting hole is formed in the pressing wheel mounting plate; a second adjusting hole corresponding to the first adjusting hole is formed in the adjusting piece; the adjusting bolt assembly comprises an adjusting bolt, an upper gasket and a lower gasket; a spherical groove and a spherical bulge are correspondingly formed in the upper surface and the lower surface of the adjusting piece correspondingly; and the lower surface of the upper gasket and the upper surface of the lower gasket are spherical surfaces and are matched with the spherical groove and the spherical bulge correspondingly. When an adjusting part of the adjusting piece deviates from an original horizontal position due to deformation, the adjusting piece can be automatically corrected in the transverse direction, and torsion generated by the adjusting piece to a whole bracket and the adjusting bolt is eliminated or reduced, so that the service life of the mechanism is prolonged and normal operation of the mechanism is guaranteed.

The invention discloses a polyester fiber membrane-based ratio type fluorescent paper chip as well as a preparation method and an application thereof, and belongs to the technical field of material science engineering and micro-fluidic chips. CdTe QDs and RhB are sequentially grafted to the surface of a polyester fiber membrane, and then 2, 4-D print holes are formed in the surface of the polyester fiber membrane by adopting a surface molecular imprinting technique to prepare fluorescent molecularly imprinted paper; and the fluorescent molecularly imprinted paper is mounted on a carrier to prepare the ratio type fluorescent paper chip. The method uses two kinds of fluorescence, and compared with a single fluorescent paper chip, inherent self-correction can be achieved, so that the detection result is more clear and accurate; the method has the advantages of simple pretreatment, detection can be carried out by performing simple cleaning, crushing and filtering on fruits and vegetables,the fluorescent paper chip can be used for 2, 4-D rapid auxiliary detection of complex fruit and vegetable samples, and no more limitation is on the types of the tested samples; the detection time isshort, the operation is simple and convenient, and the carrying is convenient; and the polyester fiber paper is used as a substrate, so that the cost is reduced, and the method is environmentally friendly.

The invention discloses a towing engine proportional control device with closed loop feedback. The device comprises an electronic control handle and a PLC control cabinet. The signal output end of the electronic control handle is connected with the signal input end of the PLC control cabinet. The towing engine proportional control device further comprises a switch valve, a proportional valve, a servo pump, a hydraulic motor and an angle sensor. The switching signal output end of the PLC control cabinet is electrically connected with the switching signal control end of the switch valve. The proportional signal output end of the PLC control cabinet is electrically connected with the proportional signal control end of the proportional valve. The servo pump is connected with an oil inlet pipeline of a handle of the hydraulic motor through the switch valve and the proportional valve in sequence. The angle sensor is arranged on the handle. The signal output end of the angle sensor is electrically connected with the feedback signal input end of the PLC control cabinet. The device is high in control precision, good in following capability and capable of rapidly shutting down a towing engine, and the handle of the hydraulic motor is prevented from shocking in the middle position.

The invention belongs to the technical field of information monitoring, and particularly relates to a monitoring method for physical sign signals. The method comprises the steps of obtaining physical sign signals of a wearer; judging whether the physical sign signals include distributing signals or not; when the physical sign signals do not include disturbing signals, transmitting the physical sign signals to a central control computer; detecting the received physical sign signals, and when the physical state of the wearer corresponding to the physical sign signals is abnormal, informing a monitored person in a warning mode. In this way, the phenomenon that misinformation of the monitoring state appears frequently due to the fact that the triggering signals include disturbing signals in a traditional monitoring mode is avoided, the monitoring accuracy is improved, and meanwhile the physical state of the wearer is easily known according to monitored physical sign parameters; when the physical state of the wearer is abnormal, corresponding alarm signals can be sent in time according to the physical state of the wearer, the monitoring cost of the wearer is lowered, and the precise monitoring purpose is achieved.

The invention discloses a target tracking method based on target and camera motion modeling. The target tracking method comprises the following steps: S1, predicting the real speed of a target at thecurrent moment through a filter algorithm; S2, predicting the speed of the camera at the current moment; S3, synthesizing the real speed of the target predicted in the step S1 and the speed of the camera predicted in the step S2 to obtain a predicted value of the resultant velocity of the target in the pixel plane at the current moment, and selecting a target search area according to the predictedvalue of the resultant velocity of the target in the pixel plane; and S4, carrying out a target tracking algorithm in the target search area selected in the step S3, and obtaining the position of thetarget in the pixel plane at the current moment. According to the target tracking method based on target and camera motion modeling provided by the invention, the accuracy and robustness of target tracking are effectively improved.

The flue gas denitration system of the thermal power generating unit comprises a flue, an ammonia spraying grid, a mixer, a flow guiding device, a rectifying device, a catalyzing device and a NOx measuring device, and a control device is electrically connected with a proportioning valve of the ammonia spraying grid, the NOx measuring device, a coal quality measuring device and a unit load measuring device; according to the control method, feedback control can be carried out on the opening degree of the proportioning valve according to the concentration of NOx, and feedforward control can be carried out on the opening degree of the proportioning valve according to the quality of coal as fired and the load of a unit, so that the technical effect of automatically controlling the ammonia spraying amount according to different loads and different working conditions is achieved; according to the control method, the ammonia spraying amount can be adjusted in advance, the ammonia spraying effectiveness is high, the utilization rate is high, the ammonia escape amount is small, the environmental protection requirement can be met, according to the control method, the unit characteristics which do not fall into the database are subjected to feedback adjustment and supplemented into the database, continuous improvement and correction can be achieved, and therefore the accuracy of pre-adjustment is improved.

The invention discloses a method for obtaining a change condition of aggregate-mortar bonding strength in concrete. The method comprises the following steps of step (1), carrying out splitting tensilestrength test on a concrete test piece; step (2), acquiring an image of one splitting surface; step (3), counting a splitting aggregate and a desizing aggregate in the splitting surface image, and calculating the area of the splitting aggregate and the desizing aggregate; step (4), calculating the proportion of the area of the splitting aggregate and the areas of all aggregates; and step (5), fitting a relation between the proportion of the splitting aggregate and the splitting tensile strength, and therefore obtaining the change condition of the aggregate-mortar interface strength. The method for obtaining the change condition of the aggregate-mortar bonding strength in the concrete provided by the invention is reasonable in design and convenient to operate, provides a reference basis for obtaining the change condition of the concrete aggregate-mortar interface strength by using a low-cost technical means, and the reference basis is combined with the utilization of the statistics andcan be completely self-corrected, so as to finally form a guide standard in the industry. Therefore, the method provided by the invention well achieves the balance between technology and cost, and isvery suitable for large-scale popularization and application.

The invention provides an internet-of-things-based monitoring method of a nitrogen injection machine of an oil well. The method comprises: a working index parameter of a nitrogen injection machine of an oil well is obtained; whether the working index parameter includes a disturbance signal is determined; if not, the working index parameter is transmitted to a central control computer; whether a fault occurs at the nitrogen injection machine, corresponding to the received working index parameter, of the oil well is detected; if so, the working state of the nitrogen injection machine of the oil well is adjusted according to a preset model; and the working index parameters before and after adjustment are displayed in a graph mode. With the method, a phenomenon that wrong reporting occurs frequently in a monitoring sate because the trigger signals do not include the disturbance signal according to the traditional monitoring way can be avoided, so that the monitoring accuracy is improved. Meanwhile, under the circumstances that the manager is absent, the working state of the nitrogen injection machine of the oil well can be adjusted monitored, thereby realizing convenient arrangement of daily running and operation scheduling of the oil well.