24results about How to "Guaranteed detection reliability" patented technology

The invention relates to a signal tamper-proof diagnosis method and device for a urea pump based on CAN communication, and belongs to the technical field of engine exhaust aftertreatment. The method comprises the steps that a request signal is sent to the urea pump; receiving a fault code signal and a feedback signal sent by the urea pump; based on the feedback signal, the working state and the urea injection amount of the urea pump are determined; and based on at least one of the working state, the urea injection amount and the fault code signal, whether the signal of the CAN bus where the urea pump is located is tampered or not is judged. According to the signal tamper-proof diagnosis method of the urea pump based on CAN communication, whether the message signal fed back by the intelligent urea pump is abnormal or not can be recognized by monitoring the working state and the urea injection amount of the urea pump in real time and combining the fault code signal, if the message signal is abnormal, it is considered that the signal of the CAN bus is tampered, and if not, the signal of the CAN bus is tampered. The intelligent urea pump is suitable for a vehicle adopting the intelligent urea pump based on CAN communication.

This invention relates to the field of testing equipment technology, specifically a durability testing fixture for motorcycle fuel tank lock discs. It includes a mounting frame, a testing box, a fixed base, and a lock disc body. The testing box has an oil port, and a pressure sensor is installed inside. A proximity switch is installed at the farthest point of the lock tongue's sliding distance. A pressurizing assembly is provided on the testing box, and a piston rod is mounted on the pressurizing assembly. A motor is mounted on the mounting frame, and a push rod is slidably connected to the mounting frame. The motor drives the push rod to push the lock disc body towards the oil port. The piston rod applies gas pressure to the testing box using the rotational force of the lock disc body, and the pressure sensor detects the gas pressure inside the testing box. This avoids the problem of inconsistent testing pressure leading to inaccurate test data in motorcycle fuel tank lock disc sealing performance testing, ensuring the reliability of the test data from this motorcycle fuel tank lock disc durability testing fixture.

The invention belongs to the technical field of valves, and particularly discloses a test method and a detection tool of an electromagnetic valve. The testing method comprises the following steps: assembling the two-way valve module; the two-way valve module is installed on the first test tool, so that the two-way valve module and the first test tool are matched to form a first airtight test cavity comprising a valve inner cavity, and the first airtight test cavity is separated from the two-way valve port through the two-way valve element; testing the air tightness of the first air tightness test cavity; the two-way valve module, the one-way valve module and the electromagnetic mechanism are assembled to form an electromagnetic valve; the electromagnetic valve is installed on a second testing tool, so that a second airtight testing cavity is defined by the valve port frame, the electromagnetic mechanism and the second testing tool; the second valve core is separated from the second valve port, so that the first valve port, the valve inner cavity, the second valve port and the external environment are communicated; and testing the air tightness of the second air tightness test cavity. According to the invention, the test efficiency and the test precision of the solenoid valve which comprises the valve port frame and has two seals can be improved, and the processing production efficiency of the solenoid valve is improved.

The embodiment of the invention discloses a constant-voltage transmitting circuit and a laser radar. The constant-voltage transmitting circuit comprises a constant-voltage power adjustable module and a constant-voltage transmitting module, the constant-voltage power adjustable module comprises an energy storage element, the input end of the constant-voltage power adjustable module is used for being connected with a constant-voltage emission power supply outputting constant voltage so as to charge the energy storage element through the constant voltage, and the constant-voltage power adjustable module can adjust the energy stored by the energy storage element; the constant-voltage transmitting module comprises a laser, the laser is connected with the energy storage element, the laser is used for transmitting laser when the energy storage element releases energy, and different energies stored in the energy storage element correspond to different laser transmitting powers. The constant-voltage transmitting circuit can drive the laser to emit light through the constant-voltage power supply outputting the constant high voltage, energy loss is low, laser of different powers can be emitted based on the constant high voltage, and the overall use reliability of the constant-voltage transmitting circuit is guaranteed.

The utility model discloses a visual inspection device for a plastic part. The visual inspection device comprises a fixed working platform, a movable tool platform and a camera shooting detection assembly, a truss and a tool advancing positioning line are arranged on the fixed working platform, the camera shooting detection assembly is movably arranged on the truss in the first direction, and the movable tool platform is movably arranged on the tool advancing positioning line in the second direction; the tool advancing positioning line is provided with a positioning detection station corresponding to the camera shooting detection assembly, and a positioning mechanism for limiting and positioning the movable tool platform on the positioning detection station is arranged on the positioning detection station; and a positioning jig for fixing a workpiece is arranged on the movable tool platform. The intelligent safe and automatic cutting device for the plastic parts is compact in design structure and reasonable in design thought, visual inspection tests on workpiece products at far and near distances and different height positions are conveniently carried out, automatic detection of the products is achieved, and the detection efficiency and reliability of the products are improved and guaranteed.

The application provides a unilateral detection system and a vehicle. The unilateral detection system comprises a voltage dividing circuit, an amplification circuit, an isolation circuit, an output circuit and a controller. The voltage dividing circuit divides the voltage of a high-voltage DC bus to obtain a first output voltage. The amplification circuit is connected with the voltage dividing circuit. The isolation circuit is connected with the amplification circuit and the voltage dividing circuit. The output circuit comprises a first operational amplifier and a first resistor. The non-inverting input terminal of the first operational amplifier and one end of the first resistor are connected with the sixth terminal of the isolation circuit. The inverting input terminal of the first operational amplifier is connected with the output terminal of the first operational amplifier. The other end of the first resistor is grounded. The first operational amplifier generates a second output voltage. The controller determines the voltage of the high-voltage DC bus based on the second output voltage. The system can monitor the voltage of the high-voltage DC bus in isolation, so as to discover abnormal conditions of the voltage in time. The system has high safety in use due to the isolation circuit.

The invention discloses a universal molecular beacon kit for various animal-derived components, and belongs to the technical field of molecular biological detection. Aiming at gene segments with specific structural characteristics in 11 common livestock and poultry animal genomes, the invention designs a composition of a universal primer and a molecular beacon fluorescent probe. The combination can be used for carrying out real-time fluorescent PCR detection and melting curve analysis by using the kit and the method by taking genome DNA of a sample to be detected as a template. By comparing the shape of a melting peak of a detected sample and the characteristic melting temperature (Tm value) of the detected sample, 11 animal-derived components of livestock and poultry can be quickly and accurately identified under the condition of single-tube detection. Technical innovation is achieved in the field of molecular biological detection, an efficient and reliable solution is provided for animal-derived component detection, and the method has important practical value and popularization potential.

The application discloses a method for detecting self-interstitial atom type dislocations in heavily arsenic-doped substrates. The method is based on the fact that self-interstitial silicon atoms in heavily arsenic-doped substrates have a thermal activation threshold effect during high-temperature epitaxy. When the effective thermal treatment time of epitaxy reaches a critical aggregation time τ c , the dispersed point defect state self-interstitial atoms can be excited and aggregated into an extended dislocation state that can be detected. The method comprises the following steps: pretreating the heavily arsenic-doped substrate; performing epitaxial growth under process conditions that satisfy the thermal activation threshold, so that the latent self-interstitial atom defects are made dominant; identifying characteristic signals by using SP1 surface scattering scanning; and optionally performing microscope observation, chemical corrosion verification and substrate trace detection. The application realizes effective detection of latent self-interstitial atom type dislocations in heavily arsenic-doped substrates, provides a quantifiable process window, and has the advantages of high detection sensitivity, good reliability and easy industrial integration.

The application provides a method and system for stress testing of an artificial intelligence system with a heterogeneous architecture. The method for stress testing of an artificial intelligence system with a heterogeneous architecture includes: performing statistics on historical test data of previous stress tests in a historical database to determine the correlation between test environments, test case types, fault modes, and test durations; generating a personalized test strategy for each of a plurality of test environments under test of the artificial intelligence system with a heterogeneous architecture under test based on the correlation between the test environments, the test case types, the fault modes, and the test durations; and performing stress testing on the plurality of test environments under test in parallel based on the personalized test strategy of each of the test environments under test.

The embodiment of the invention discloses a constant-current transmitting circuit and a laser radar. The constant-current transmitting circuit comprises a constant-current power adjustable module and a constant-voltage transmitting module. The constant-current power adjustable module comprises an energy storage element, the input end of the constant-current power adjustable module is used for being connected with a transmitting power supply outputting power supply voltage so as to charge the energy storage element through the power supply voltage, and the constant-current power adjustable module is used for providing constant current for the energy storage element and adjusting the energy stored by the energy storage element; the constant-voltage transmitting module comprises a laser, the laser is connected with the energy storage element, the laser is used for transmitting laser when the energy storage element releases energy, and different energies stored in the energy storage element correspond to different laser transmitting powers. The constant-current transmitting circuit can provide constant current for the energy storage element, the problem that the laser emits light by mistake is avoided, and the reliability and accuracy of laser emitted by the laser are guaranteed.

The present application relates to a kind of urban inland river sewage intelligent detection method, comprising the following steps: 1) preparation standard sewage sample, obtain multiple sewage samples with different indicators and different index data;2) the near infrared spectrum data of all sewage samples is collected and pretreated, form near infrared spectrum data set, and be divided into training set and test set;3) construct sewage index quantitative detection model based on convolution neural network, sewage index quantitative detection model is trained and tested by training set and test set;4) collection actual water sample and divide into two parts, respectively by chemometrics and the sewage index quantitative detection model established to predict its key index data, by comparing to verify the accuracy and reliability of the model established;5) using the sewage index quantitative detection model obtained to detect the urban inland river water quality to be detected.The method is conducive to improving the speed and accuracy of urban inland river water quality detection.

The utility model relates to the technical field of semiconductor testing and packaging equipment, in particular to a turret-type manipulator clamping control carrier tape margin, which comprises a turret, and a carrier tape is wound on one side of the turret by taking the center of the turret as the circle center; the fixed bracket is fixed on the other surface, opposite to the carrier tape, of the rotating tower and is used for bearing the rotating tower; the allowance detection assembly comprises an adjusting support, a detection window and a detection module, the detection window is formed in the surface of the rotating tower and used for exposing the local area of the carrier tape, one end of the adjusting support is fixed to the fixing support, and the other end of the adjusting support extends in the direction of the detection window; and the output end of the detection module mounted on the adjusting bracket corresponds to the position of the detection window, and is used for detecting the residual amount of the carrier tape.

The invention discloses a lightweight security detection method and system for energy efficiency management of industrial equipment, a terminal and a storage medium, and the method comprises the steps: converting multi-protocol industrial data into a unified feature matrix through zero-copy analysis on an edge gateway, generating an anti-interference robust feature matrix through composite normalization processing, and carrying out the detection of the robust feature matrix; the matrix is input in parallel into a lightweight automatic encoder and an optimization isolation forest for bimodal analysis, a comprehensive abnormal score is output through a dynamic fusion layer, the energy efficiency deviation degree is calculated in combination with an equipment energy efficiency baseline, a safety and energy efficiency joint decision vector is formed, a progressive response strategy is matched according to the decision vector, and a control instruction is executed in real time; meanwhile, the carbon footprint in the detection process and the energy-saving strategy emission reduction amount are quantified, and the model is optimized through feedback. According to the method, efficient deployment on the resource-constrained edge side is realized, the method has strong interference resistance and high real-time performance, a linkage closed loop of safety protection and energy efficiency optimization is opened, and verifiable carbon emission reduction benefits are provided.

The present invention relates to the technical field of strength detection of solid materials and their connection, and provides a method for detecting the strength characteristics of solid materials and their connection under stress, including a stress distribution detection method based on a three-layer composite structure, a stress distribution detection method based on a special detection tape, and a sealing performance detection method based on a temperature-sensitive color change response. Among them, the three-layer composite structure includes a fixed adhesive layer and a deformation detection adhesive layer, and the stress concentration area is determined by observing the fracture of the deformation detection adhesive layer under a preset tension; the special detection tape is composed of a flexible frame and a plurality of detection monomers, and the detection monomer adopts a three-stage design and has dry and wet dual-state detection capabilities; the temperature-sensitive color change response detection adopts a reversible temperature-sensitive material, combined with a precise temperature control system to achieve sealing performance evaluation. This method can not only guide the optimal arrangement of connection points, but also provide a basis for the thickness distribution and local shape design of skin parts.

The pressure cooking utensil comprises a pot body and a pot cover, the pot cover has a cover closing state and a cover opening state, the pot body is provided with a first signal receiving and transmitting device and a second signal receiving and transmitting device, the pot cover is provided with a third signal receiving and transmitting device, and in the cover opening state, the first signal receiving and transmitting device and the second signal receiving and transmitting device are triggered in a matched mode. In the cover closing state, the first signal receiving and transmitting device and the third signal receiving and transmitting device are matched for triggering or the second signal receiving and transmitting device and the third signal receiving and transmitting device are jointly matched for triggering. Various trigger states and non-cooperation states are formed through cooperation of the three signal receiving and transmitting devices, so that the control unit can perform cover opening and closing detection and validity detection of the signal receiving and transmitting devices according to the trigger states of the signal receiving and transmitting devices. Therefore, the diversity of detection functions and the accuracy of detection results are greatly improved, the pressure cooking utensil responds according to the state of the pot cover, and reliable operation of a cooking program is ensured.

The utility model provides a marine diesel engine crosshead pin temperature sensor hole detection tool comprising a main measuring rod, one end of the head of the main measuring rod is provided with a head shaft section, one end of the tail of the main measuring rod is provided with a tail hand-held section, one end of the main measuring rod close to the tail hand-held section is provided with a threaded section, and the other end of the main measuring rod close to the tail hand-held section is provided with a threaded rod. A tool withdrawal groove is formed between the threaded section and the tail handheld section. The tool is manufactured according to the structural characteristics of the crosshead bearing detection temperature sensor to be installed, detection of the crosshead bearing detection temperature sensor hole can be conveniently and rapidly completed, whether interference exists between the temperature sensor and the temperature measuring hole can be effectively detected, and meanwhile whether the temperature sensor can be installed smoothly can be verified; an effective inspection effect can be achieved; the tool main body is stable in structure, the inspection quality and the inspection efficiency are improved, and meanwhile the operation cost is saved.

This application provides a single-sided detection system and vehicle. The single-sided detection system includes a voltage divider circuit, an amplifier circuit, an isolation circuit, an output circuit, and a controller. The voltage divider circuit divides the voltage of the high-voltage DC bus to obtain a first output voltage. The amplifier circuit is connected to the voltage divider circuit. The isolation circuit is connected to both the amplifier circuit and the voltage divider circuit. The output circuit includes a first operational amplifier and a first resistor. The inverting input terminal of the first operational amplifier and one end of the first resistor are connected to the fifth terminal of the isolation circuit, and the non-inverting input terminal of the first operational amplifier is connected to the sixth terminal of the isolation circuit. The first operational amplifier generates a second output voltage. The controller determines the voltage of the high-voltage DC bus based on the second output voltage. This single-sided detection system can isolate and monitor the voltage of the high-voltage DC bus, promptly detect voltage anomalies, and, with the isolation circuit, provides a high level of overall system safety.

The invention provides detection equipment, the detection equipment is arranged in a simulation roadway, the detection equipment comprises a simulation device, the simulation device comprises a main body assembly, at least two swing assemblies, a rotating assembly and a dust generating assembly, and the at least two swing assemblies are arranged on two opposite ends of the main body assembly in a turnover manner; the rotating assembly is rotatably arranged at the end, away from the main body assembly, of the swinging assembly, and the rotating assembly is provided with a spraying hole; the dust generating assembly is arranged on the main body assembly, the dust generating assembly is provided with a storage cavity used for storing impurities, and the dust generating assembly communicates with the at least one rotating assembly so as to drive the impurities to be sprayed out from the spraying holes; the first detection device is arranged on the simulated roadway and is used for detecting the speed and the volume of gas in the simulated roadway; and the second detection device is arranged on the simulated roadway and is used for detecting the concentration of impurities in the simulated roadway. The problem that the dust control effects of various dust control measures under different working conditions cannot be evaluated in the prior art is effectively solved.

The invention provides a synchronous rectifier tube control circuit and a switching power supply, relates to the technical field of switching power supplies, and provides three embodiments including a first module and / or a third module and a second module, the problem that the synchronous rectifier tube is easy to be mistakenly conducted is solved through the first module and / or the third module, and the detection efficiency is ensured; and the second module is high in detection stability and accuracy, so that when the first module and / or the third module are / is failed in detection, the second module can solve the problem that the synchronous rectification tube is easy to be mistakenly conducted, the detection reliability is ensured, and the purposes of accurately controlling the conduction of the synchronous rectification switch tube and improving the power supply efficiency are achieved.

This invention discloses a pyrotechnic resistance detection circuit, system, method, battery, and vehicle. The pyrotechnic resistance detection circuit includes a current source module, a detection resistor, a pyrotechnic resistor, and a current limiting module connected in sequence. It also includes a first sampling point, a second sampling point, and a third sampling point. The first sampling point is located between the current source module and the detection resistor; the second sampling point is located between the detection resistor and the pyrotechnic resistor; and the third sampling point is located between the pyrotechnic resistor and the current limiting module. The pyrotechnic resistance detection circuit, system, method, battery, and vehicle provided by this invention can ensure reliable detection.

The invention discloses full-automatic intelligent detection equipment, and belongs to the technical field of gear surface quality detection. The equipment adopts a turntable multi-station assembly line layout, and comprises a first positioning head with a self-adaptive floating conical surface positioning function, a second positioning head capable of pressing down and driving a gear to rotate, and a core detection wire array. The plurality of horizontally tightened detection wires are in dynamic contact with the tooth top surface of the gear when the gear rotates, and the contour fluctuation is converted into a tension signal. Local defects are diagnosed by analyzing abnormal fluctuation of signals of a single detection wire, comprehensive defects such as axial distortion are diagnosed by comparing signal differences of multiple detection wires at the same moment, and multi-dimensional evaluation is completed at a time. According to the method, the defects that optical measurement is easily interfered and contact scanning is low in efficiency are effectively overcome, and high-precision, high-efficiency and high-reliability full-automatic detection is realized.

The embodiment of the invention discloses a battery thermal runaway detection method, device and equipment. The battery thermal runaway detection method comprises the following steps: obtaining the residual electric quantity of each battery cell in a target battery; wherein the target battery comprises a plurality of battery cells; when the residual electric quantity is higher than a preset electric quantity threshold, detecting the internal resistance of the battery cell based on a preset period and a preset frequency; determining the internal resistance change rate of the battery cell according to the internal resistance of the battery cell and a preset period; and determining whether thermal runaway occurs in the target battery according to the internal resistance change rate. According to the battery thermal runaway detection method, device and equipment provided by the embodiment of the invention, the detection reliability can be ensured.

The invention provides a product test line of image acquisition equipment and a test method of the image acquisition equipment. According to the product test line, appearance detection is carried out through the first manual detection station, and then function test is carried out on the automatic detection station. And the target assembly of the automatic detection station executes a preset target switching or moving action according to the function test instruction, and the tested equipment collects an image of the target assembly to obtain an image or video of a corresponding target and obtain original data required by the function test. The whole process does not need manual intervention, and full-automatic operation from instruction issuing, target response, image acquisition to data generation is realized. The original data collected by the function test can be judged by a machine or manually. According to the product test line of the image acquisition equipment, the test efficiency and consistency are ensured through automation, and the flexibility and reliability of a judgment result are ensured through a man-machine cooperation mechanism.