56results about How to "Prevent false positives" patented technology

A building protection system for a building having an inlet air duct with an inlet damper operable to regulate inlet air entering the building and passing through the inlet air duct, a return air duct with a return damper operable to regulate return air, and a fan system operable to circulate a mixture of the inlet air and the return air in the building, the building protection system including: (a) a chemical sensor system operable to detect one or more chemicals in the inlet air; (b) a chemical sensor system operable to detect the one or more chemicals in the return air; (c) a radiological sensor system operable to detect one or more radioactive material in the inlet air; (d) a radiological sensor system operable to detect the one or more radioactive materials in the return air; and (e) a control system in communication with the sensor systems, and a building control system, the control system being operable to signal the building control system to close the dampers and to turn off the fan system whenever output from any of the chemical sensor systems indicates more than a predetermined level of one or more of the one or more chemicals or whenever output from any of the radiological sensor systems indicates more than a predetermined level of one or more of the one or more radioactive materials.

The invention discloses a driving fatigue electroencephalogram monitoring method based on electrooculogram and electroencephalogram comprehensive determination, comprising the steps: first, connecting devices and initializing parameters; connecting an electroencephalogram signal acquisition device with an electroencephalogram signal monitor terminal, and setting fatigue step parameters through a master control chip of the electroencephalogram signal monitor terminal; second, acquiring electroencephalogram signals: using the electroencephalogram signal acquisition device to acquire and pretreat electroencephalogram signals of a driver, and synchronously transmitting the pretreated electroencephalogram signals to the electroencephalogram signal monitor terminal; third, analyzing the electroencephalogram signals: calling an electrooculogram determination module and an electroencephalogram determination module in the same time by the master control chip of the electroencephalogram signal monitor terminal, and analyzing the electroencephalogram signals acquired and pretreated by the electroencephalogram signal acquisition device. The method of the invention has simple steps and reasonable design, is convenient to implement and effective to use, can accurately monitor the driving fatigue state of the driver in a simple, quick and real-time manner and has high practical value.

The invention relates to a vehicle fire linkage method based on a track traffic full-automatic driving system. The vehicle fire linkage method comprises the following step: by communicating a running train, a control center immediately obtains alarm information, confirms fire alarm information by virtue of CCTV and prevents a false alarm operation; in case of a fire, the control center performs a reasonable operation more immediately, quickly and efficiently by use of a fire linkage method, and therefore, the safety degree of track traffic operation is increased and the fire losses are reduced to the utmost extent; furthermore, the method has excellent practical application. The invention also discloses a vehicle fire linkage device based on the track traffic full-automatic driving system.

The invention discloses a kit for colorectal cancer detection and an application thereof. The kit comprises a primer composition, and a probe composition. The primer composition comprises BS-S9-F, BS-S9-R, BS-N4-F, BS-N4-R, BS-SDC2-F, BS-SDC2-R, BS-ACT-F and BS-ACT-R. The probe composition comprises BS-S9-P, BS-N4-P, BS-SDC2-P and BS-ACT-P. The kit of the invention can be applied to the detectionof colorectal cancer, and has the advantages of high sensitivity and high specificity.

The invention discloses a micro-fluidic chip system which comprises a micro-fluidic chip and a temperature control module. The micro-fluidic chip comprises a substrate, a structural piece and a cover piece. The substrate is located at the bottom of the micro-fluidic chip. The structural piece is arranged on the substrate and comprises a reaction pool. The cover piece is configured to cover the structural piece, a sealing cavity is formed between the cover piece and the structural piece, the reaction pool is located under the sealing cavity and a paraffin section is cured on the side, forming the sealing cavity, of the cover piece. The temperature control module is configured to be fixed to the micro-fluidic chip and used for heating and carrying out temperature measurement and control on reactants in the reaction pool. In addition, the system may further comprise a detection module. The micro-fluidic chip system can achieve quantitative detection and qualitative detection for isothermal amplification.

The invention discloses an isothermal chain multiple displacement detection card of pathogen nucleic acid. The isothermal chain multiple displacement detection card of the pathogen nucleic acid utilizes the detection card which is prepared through a nucleic acid isothermal chain displacement method and a colloidal gold detection technology to carry out multiple detection on HBV-DNA, HCV-RNA, HIV-RNA, and TP-DNA. The isothermal chain multiple displacement detection card of the pathogen nucleic acid has the characteristics of simple and rapid operation, high sensitivity, and no need of professional equipment. The pathogen nucleic acid to be detected is not amplified in the detection process, so the detection card has the advantages of preventing amplified matter cross contamination in laboratories and preventing false positivity, can be widely used in high sensitivity pathogen nucleic acid detection in the fields of clinical detection, inspection and quarantine, infectious disease control, biological technology and the like, and has a wide application prospect.

The invention provides an electric tailgate system based on a vehicle radar and a control method. The electric tailgate system comprises an electric tailgate control module, an electronic control assembly module, a tailgate control alarm module, a millimeter wave radar receiving and transmitting module, an extremely wide horizontal field angle antenna, a keyless induction receiving and transmitting module, a multifunctional vehicle key and a multifunctional vehicle key module. , one-kick control of the electric tail door of the vehicle can be realized by only depending on one set of existing vehicle millimeter-wave radar transceiving module and keyless induction transceiving module, so that the loading cost is reduced, and the original detection function of the vehicle-mounted radar is still considered. , a user can control the automatic opening of the vehicle door with feet when the user is inconvenient to pull the vehicle door with hands, the problem of resource waste caused by highpower consumption of the existing capacitive sensing system in the working process is avoided, and the problems of low sensitivity, potential safety hazard due to the fact that the user is too close to the vehicle door and the like in the traditional opening method are solved.

The invention provides an alarm processing method and system in a video monitoring scene and an electronic device. The method comprises the following steps: S1, obtaining abnormal data in the video monitoring scene; S2, detecting and judging whether the abnormal data is face recognition feature data or not, if yes, executing the step S3, and if not, executing the step S4; S3, sending the abnormaldata to a third party, comparing the abnormal data with a data system of the third party, and sending alarm information if the similarity between the abnormal data and the data of the third party exceeds a preset value; S4, performing format processing on the abnormal data to obtain formatted abnormal data; S5, classifying the formatted data to obtain N types of abnormal data, and configuring a threshold value of each type of abnormal data; and S6, if the formatted data exceeds the threshold value of a certain classification, sending alarm information to the formatted data exceeding the threshold value of the classification. According to the method provided by the invention, the reliability and stability of alarm processing are realized, and the authenticity of alarm data is improved.

The invention relates to the technical field of smoke detectors, in particular to a photoelectric smoke detector. According to the invention, a condensation detection device used for detecting the water vapor concentration in the environment and a smoke detection device used for detecting the smoke in the environment are arranged in the photoelectric smoke detector at the same time. When the condensation detection device detects that the water vapor concentration in the environment is high, the detection result obtained in the smoke detection device corresponds to the water vapor concentrationdetected by the condensation detection device, so that the influence of the water vapor concentration on the smoke detection device is eliminated, and the correct smoke concentration is obtained. Thesmoke detector is simple in structure and convenient to install, interference of water vapor on the smoke detector can be eliminated, false alarm of the smoke detector due to high water vapor concentration is prevented, the sensitivity of the smoke detector is improved, and the reaction time is shortened.

An intelligent thing connecting comprehensive operation platform comprises an intelligent thing connecting operation managing center, a total network communication device, a subnetwork communication device, an entrance machine, a numerical control manager, an intelligent thing connecting controller, a human body micro-electronic sensor and a digital set-top box. The intelligent thing connecting operation managing center is connected with the total network communication device in a bi-directional mode. The total network communication device is connected with the subnetwork communication device in a bi-directional mode. The subnetwork communication device is connected with the entrance machine in a bi-directional mode. The subnetwork communication device is connected with the numerical control manager in a bi-directional mode. The intelligent thing connecting controller and the digital set-top box are respectively connected with the numerical control manager in a bi-directional mode. The human body micro-electronic sensor is wirelessly connected with the numerical control manager. According to the intelligent thing connecting comprehensive operation platform, the technology of the Internet of Things is adopted, intelligent security and protection, building talk-back, energy-saving control, cable televisions and other system functions of families or offices are integrated and connected with one another, shopping, services, advertisements and other e-business operation functions are added, and the intelligent thing connecting comprehensive operation platform with the multiple functions is achieved.

The invention discloses a fault diagnosing system based on knowledge bases. The fault diagnosing system based on the knowledge bases comprises a client-side, a cloud server and a maintenance station side, wherein the client-side is used for detecting the working condition of a washing machine of a user, the client-side comprises an electric current transducer, a single chip microcomputer, a wireless communication device and a buzzing device, wherein the single chip microcomputer is provided with a first knowledge base, and a first D, a first time threshold value and a first time tally threshold are stored in the first knowledge base, wherein the first D is installed in the first knowledge base; the cloud server is provided with a second knowledge base, a plurality of second Ds and multiple pieces of address information are stored in the second knowledge base, and the cloud server receives information sent by the client-side; the maintenance station side receives the information sent by the cloud server. By the arrangement of the two knowledge bases, the storage and management of multiple data are achieved. According to the fault diagnosing system based on the knowledge bases, detection is implemented on the working condition of the washing machine of the user by the electric current transducer and a revolution speed transducer, not only can the user be reminded in time when a fault occurs on the washing machine and the damage to the human life safety caused by faults such as electric leakage and the like be prevented, but also guaranteed maintenance can be applied to a maintenance station.

The present invention relates to a method of evaluating quality of a degraded speech signal received from an audio transmission system conveying a reference speech signal. The method comprises sampling said signals into reference and degraded signal frames, and forming frame pairs by associating reference and degraded signal frames with each other. For each frame pair a difference function representing disturbance is provided, which is then compensated for specific disturbance types for providing a disturbance density function. Based on the density function of a plurality of frame pairs, an overall quality parameter is determined. The method provides for compensating the overall quality parameter for the effect that the impact of noise in frequency bands where there is only marginal speech activity when compared to natural speech is not correctly modelled in the current measurement standards.

The invention discloses a deafness susceptible gene mitochondrion 12SrDNA 1555A>G and 1494C>T mutant ratio detection kit which comprises amplification reagents and a series of standard substances, wherein the amplification reagents comprise a reaction mixture of a PCR (polymerase chain reaction) buffer solution, MgCl2 and dNTPs (deoxyribonucleotide triphosphates), Taq enzyme, ultrapure water, and a high-specificity amplified mitochondrion 2SrDNA:1494C>T and 1555A>G primer mixture; and the series of standard substances comprise a 1494C>T mutant ratio standard substance and a 1555A>G mutant ratio standard substance. By using the 2 deafness susceptible gene sites as the detection objects, the deafness susceptible gene sites are subjected to amplification and fluorescence quantitative detection and are compared with the mutant ratio standard substances to screen out individuals containing the site mutants and determine various mutant ratios. The kit has important meanings for screening deafness susceptible genes and especially newborn deafness genes.

Disclosed is an intelligent injection molding process of a bumper support. The whole processing process comprises the steps of raw material purchase and inspection, raw material warehousing and storage, material taking, injection molding, correction, product trimming, assembly, inspection, packaging, ex-warehouse and delivery. The intelligent injection molding process is adopted as the injection molding process and comprises a management and control platform, an injection molding cloud manufacturing platform, an injection molding machine controller and a production terminal. The management andcontrol platform is a mobile terminal management and control platform. The injection molding cloud manufacturing platform has function options including big data integration, process management and control, fault monitoring diagnosis and process optimization. The injection molding machine controller comprises a main processor and a slave processor. The production terminal comprises an injection molding machine, a mold, a detection system, a mechanical arm, a feeding and discharging conveying device, a drying machine, a mold temperature machine, a hot runner and a production management system.

The invention relates to a method for realizing pulse check through a digital circuit, which belongs to the technical field of IGBT (insulated gate bipolar transistor) applications of power electronics. The technical scheme comprises the following steps of: (1) performing frequency division on a pulse signal returned by an IGBT via a D trigger, then comparing the pulse signal with an original pulse, enabling the signal after comparison and a power supply fault signal SO emitted by the IGBT to pass through an or gate and then outputting a series of 220ns short pulses; (2) removing the part from a rising edge to about 220-250nm from the series of the pulses to remove a time delay signal generated by pulse comparison, and performing broadening treatment on the remaining signal, wherein the broadening width is decided by the number of external CLK (clocks) and triggers; and (3) finally outputting a low-level zero signal if an FO (fiber optic) alarm or an SO alarm does not exist; and outputting the pulse signal decided by the number of CLK signals and the triggers if an FO or SO signal exists. According to the method disclosed by the invention, logic conversion and digital pulse signalprocessing are realized in a hardware circuit way, the reliability is high, the anti-interference ability is strong, the original protection function is reinforced and extended, and the protection ofthe IGBT can be better realized.

The invention is suitable for the field of tumble protection, and provides a fall protection method and a wearable fall protection device. The fall protection method comprises the following steps: acquiring motion information of a human body, wherein the motion information comprises accelerated speeds, angular speeds and inclination angles of an X axis, a Y axis and a Z axis of the human body; according to the motion information, calculating the probability that the human body falls down according to a falling down detection model, and when the probability is larger than a preset threshold value, judging that the human body falls down, sending a trigger signal to a trigger device to open an air cylinder, and achieving rapid inflation of the inflatable air bag. According to the fall protection method provided by the embodiment of the invention, the event before fall collision can be detected, that is, the fall probability of the user is judged and the action is made in advance when the user does not fall, so that the injury to the user can be relieved in time.

The invention discloses a robot device used for typhoon early-warning. The robot device comprises a vehicle body and a rotating machine body which is arranged on the top part of the vehicle body in arotatable fit connection manner, wherein the vehicle body is provided with a central column used for being in rotatable fit connection with the rotating machine body, a first guide sliding groove is formed in the vehicle body, a first cavity positioned at the top part of the first guide sliding groove is formed in the rotating machine body, a transition groove extending upwardly and downwardly isformed between the first cavity and the first guide sliding groove in a communicated manner, a second guide sliding groove is formed in the top part of the first cavity, the end surface of the top part of the rotating machine body is provided with a protruding table positioned just above the first cavity, a second cavity is formed in the protruding table, a first guide sliding block is in slidingfit connection in the first guide sliding groove, and a third cavity is formed in the first guide sliding block. The robot device is simple in structure, convenient in operation and convenient to store, move and carry, and improves the efficiency and effect of typhoon early-warning.

The invention discloses a monitoring structure of bicycle tire pressure. The monitoring structure comprises a tire pressure detection element, a signal processing module, a power supply module and an alarm, wherein the tire pressure detection element is electrically connected with the signal processing module; the signal processing module is electrically connected with the power supply module and the alarm respectively; the monitoring structure is characterized in that the tire pressure detection element is piezoelectric ceramic; the piezoelectric ceramic is fixedly mounted on a contact surface of the inner side of a rim of a tire and an inner tire of a bicycle. The invention further discloses a monitoring method of the bicycle tire pressure; the monitoring method is characterized by comprising the following steps: a, setting one time period T and one threshold value voltage U in the signal processing module; b, obtaining a voltage value S generated by pressing the piezoelectric ceramic; judging that if the voltage value S is smaller than the threshold value voltage U and can be lasted for one time period T, considering that the tire pressure is abnormal; controlling the alarm to alarm by the signal processing module. According to the monitoring structure and the monitoring method, the bicycle tire pressure can be monitored in real time and alarming is rapidly carried out when the tire pressure is reduced.

The invention discloses a power transmission line operation monitoring system for an intelligent power grid. The power transmission line operation monitoring system comprises a front-end sub-platform, a monitoring platform and a database platform; the front-end sub-platform is used for collecting real-time operation state parameter data on a power transmission line of a power grid, the monitoring platform is used for carrying out a series of analysis processing on the collected real-time data, and the database platform is used for recording and storing the real-time data imported into and exported from the monitoring platform and supplementing an original database. According to the power transmission line operation monitoring system of the intelligent power grid, a combination mode of external video monitoring and internal sensing equipment monitoring is combined, the operation state of the power transmission line of the power grid can be monitored comprehensively and accurately in real time, early warning information is sent out at the first time when abnormal data is found, an emergency department is informed to carry out emergency processing, and therefore, the operation safety of the power transmission line of the power grid is ensured to the maximum extent.

The invention discloses a primer composition, a kit and a method for identifying early sex of a pigeon. The primer composition for identifying the early sex of the pigeon comprises EE0.6-gf: 5'-TCCTATGCCTACCACCTTCCT-3', EE0.6-gb: 5'-TTGAGAAAGAATCTGACCTGAACC-3', noval_ gf: 5'-AGCAGTGTGTTTACCGTATATTTCC-3' and noval_ gb: 5'-CGGCAGTTGCACCACTATCA-3'. The kit comprises the primer, a lysate A, a neutralization solution B, a premixed solution C and a nucleic acid dye. When the kit is used for detection, the detection result is reliable, the method is simple and convenient, agarose gel electrophoresisis not needed, and the nucleic acid dye directly detects the PCR result.

The invention relates to the technical field of pipeline construction, in particular to a mining area pipeline construction mobile monitoring system which comprises a supporting shell, a driving mechanism, rolling wheels and a controller. The supporting shell is in a [ shape, the lower end of the supporting shell is connected with the rolling wheels, and a monitoring mechanism is installed in the supporting shell; the monitoring mechanism is used for monitoring the integrity of the pipeline; the controller is used for controlling automatic operation of the electrical components; the driving mechanism rotates the rolling wheels to drive the device to move along the pipeline and then is matched with the monitoring mechanism to detect whether the pipeline is damaged or not, so that the purpose of manually detecting the pipeline is omitted, on one hand, the time of workers for detecting the pipeline in a mining area is omitted, and the labor intensity of the workers is relieved; and on the other hand, the situation that the detection effect of the pipeline cannot be guaranteed when workers detect the pipeline due to dim light in the mining area is prevented, and the detection effect of the pipeline is guaranteed.

The invention provides a detection method and device for a stove surface temperature sensor, and relates to the technical field of kitchen appliances. The detection method comprises the following steps that 1, a temperature value detected by the stove surface temperature sensor is obtained; 2, when the variable quantity of the temperature value in a first preset time period is less than or equal to a first preset variable quantity, the temperature value is compared with a temperature threshold value; 3, when the temperature value is less than the temperature threshold value, the stove surface temperature sensor is judged to be invalid; 4, when the temperature value is greater than the temperature threshold value, the heating power of a stove is reduced, the temperature value is monitored within a second preset time period, and when the variable quantity of the temperature value within the second preset time period is smaller than or equal to a second preset variable quantity, it is judged that the stove surface temperature sensor fails. after 5, the temperature value exceeds the temperature threshold value, whether the stove surface temperature sensor fails or not can be judged by reducing the heating power and monitoring the variable quantity of the temperature value within the second preset time period, and failure detection on the stove surface temperature sensor under the condition of the full temperature period can be achieved.

The invention provides an automatic test method and an automatic test system for a comprehensive test instrument. The method comprises the following steps: S1, setting test parameters, and configuringtest contents; S2, reading test parameters of the tested equipment in parallel through the first comprehensive tester and the second comprehensive tester, and capturing and analyzing WLAN signals sent by the tested equipment to obtain test index data; and S3, respectively obtaining test results of the first comprehensive tester and the second comprehensive tester through API interfaces, and thendisplaying the test results in a list mode. According to the invention, the test efficiency can be effectively improved. One WLAN type tested device can be completed only in about 2 hours after the automatic test is realized. The mistaken testing can be prevented, and the automatic test result output is realized. The comparison precision can be effectively improved. Signals are captured and analyzed through the first comprehensive tester and the second comprehensive tester which are parallel to each other. The time delay is eliminated, and the result is more consistent and effective. The operation is simple, and testers can easily master.

The invention belongs to the technical field of genetic engineering and discloses a primer for rapidly detecting an HLA-B*1502 gene, a kit comprising the primer and a method for rapidly detecting the HLA-B*1502 gene by the primer and kit. According to the invention, by virtue of the HLA-B*1502 gene-specific primer and the combinational design of multiplex primers, an SNP site of the HLA-B*1502 gene is completely covered, the specific binding is enhanced and the false positive generation is more effectively prevented. In addition, by pre-mixing the specific primer, dNTPs, PCR buffer and dyes, the operating time and workload are significantly saved, the method is fast, simple, accurate and intuitive, the entire gene screening and classification experiment can be completed within three hours and the problem of safe medication instruction of the HLA-B*1502 gene in antiepileptic drugs is solved.

The invention provides a binary program-oriented heap overflow detection method. The method comprises the following steps: recording relevant heap management operation information according to the calling situation of a heap management operation function in a program running process; generating taint information according to the heap management operation information, and associating the taint information with the heap management operation information; dynamically monitoring all operations related to the taint information in the program running process by means of dynamic transmission of the taint information; if the taint data is found to be used in a command, taking the command as a heap overflow judgment command; determining the actual access memory address of the command according to the taint data, and judging whether the memory address has heap overflow or not. By dynamically monitoring the heap allocation and heap pointers in the program running process, the out-of-bounds behaviors in all heap access operation processes are identified, so that heap overflow detection is completed.

The invention discloses a water sample collecting device for sewage treatment. The water sample collecting device comprises electric push rods, a tank body and a liquid collector, wherein the tank body is arranged on a device body; a tank cover is movably mounted on a top side of the tank body through a hinge, and a foam pad is arranged at the top of an inner side of the tank cover in an embedded manner; a fixing buckle is mounted at an upper end of one side of the tank body; the electric push rods are arranged at four corners of the bottom of the tank body in an embedded manner, and anti-skidding bottom studs are fixedly mounted at bottom ends of the electric push rods; a battery is arranged in the middle of the bottom of the tank body; the liquid collector is mounted inside the tank body in an embedded manner; and the liquid collector is formed by a collector controller, a locking switch, a suction hole, a liquid containing cylinder, a collector charging hole, an extension rod, a collector handle, a micro-electric pump and an observation window together. The extension rod arranged on the water sample collecting device for sewage treatment has a telescopic structural design, and can lengthen the liquid collector, so as to facilitate liquid collection on a deeper water surface, and expand the applicable range of the liquid collector.

The invention relates to a multi-state online monitoring system for a lead-acid storage battery, and belongs to the technical field of battery safety monitoring. The system comprises a body monitoringmodule, an environment monitoring module and a monitoring background. The body monitoring module comprises an internal resistance monitoring unit, a floating charge current monitoring unit and a lead-acid storage battery surface temperature monitoring unit. The internal resistance monitoring unit comprises a switching circuit, a constant-current discharge load and a voltage sensor which are connected in sequence, and the constant-current discharge load and the voltage sensor are connected in parallel. The floating charge current monitoring unit comprises a modulation circuit, an open type fluxgate probe, an overvoltage protection circuit and a signal processing circuit which are connected in sequence. The environment monitoring module is located in the lead-acid storage battery chamber and comprises a combustible gas monitoring unit, a smoke monitoring unit, a humidity monitoring unit and an image monitoring unit. Real-time state acquisition and monitoring are carried out on judgmentfactors which are sensitive to lead-acid storage battery failure or extremely early fire, and the accuracy of lead-acid storage battery fire identification is improved.

The invention relates to a monitoring device for detecting the leakage of a hydrazine gas and a using method thereof, which relate to the field of gas monitoring. The monitoring device comprises sensors and an alarming unit which are connected with a control module respectively. A signal amplification circuit and an AD conversion module are sequentially arranged between the control module and thesensors. The sensors are divided into a primary sensor, a secondary sensor and a tertiary sensor according to different ranges of sensed hydrazine gas concentration. In the monitoring device, three stages of hydrazine gas concentration detection can be realized; and the control module starts different alarming modes and treatment ways according to the leakage levels of different hydrazine gas concentrations and different leakage speeds so as to avoid unnecessary or false alarms. In the using method for the device, different current conditions can be dealt by summarizing detection information from a plurality of aspects to achieve the perfect combination of pertinence and efficiency, the current severity of the leakage of the hydrazine gas is known according to an alarm processing mode, and bases and convenience are provided for the selection of subsequent procedures.