380results about How to "Realize the detection function" patented technology

The invention discloses a double authentication-based word document electronic seal system and method. The system of the invention comprises a digital signature module, a BMP image-based fragile watermarking module, a word format information carrying-based robust watermarking module and a key management module. A double-authentication mechanism is adopted to realize the authentication of electronic seal; when the fragile watermarking is invalid, the robust watermarking can not only complete the inspection of the document, but also generate a document source analysis report and a tamper detection report to clear the issuer information of the file and the specific tampered position and ensure the integrity, truth, reliability and nonrepudiation of the electronic document. The invention has a perfect electronic seal management system and an identity authentication strategy based on hardware, and can provide further detection function for the tampered document and store the summary information of the document by means of the fragile image watermarking and the robust watermarking. The invention also discloses a double authentication-based word document electronic seal method.

The invention discloses an instrument for detecting the shearing strength of the interlayer of an asphalt pavement. The instrument comprises a base, a driving motor, a pushing piece which ensures that the driving motor drives a shearing piece to shear a sample through a transmission piece, and a force gauge for real-time detection of shearing force; the transmission piece is mounted on the base; a data acquisition and control system which analyzes and processes signal detected by the force gauge and accordingly controls the driving motor according to the processing results, and a host computer connected with the data acquisition and control system are further included; the driving motor is a stepping motor; and the data acquisition and control system adopts an MSP430 singlechip, and is engaged in two way communication with the host computer through a USB interface. The invention has the advantages of reasonable mechanical structure, small size, light weight, high degree of automation and convenient use and operation, and can effectively monitor and control the shearing piece to be tested in a real-time manner and greatly improve the measuring accuracy.

The invention relates to an edge defect detection method and device of a target object and a storage medium. The edge defect detection method comprises the steps of obtaining a to-be-detected image of the target object and a set region of interest; performing edge detection on the region of interest to obtain an edge point set of the target object on a free curve; segmenting the free curve of the target object in the region of interest to obtain at least one curve segment, and obtaining a plurality of edge points corresponding to each curve segment in the edge point set; configuring a corresponding datum line for each curve segment, and calculating the distances from a plurality of corresponding edge points in the edge point set to the datum lines; comparing the distance with a preset distance threshold value, and determining a plurality of candidate defect points in the edge point set according to a comparison result; and determining the edge defect of the target object according to the plurality of candidate defect points. According to the technical scheme, burrs at the edge of the object can be detected in an image processing mode, and the accuracy and efficiency of edge detection are improved.

The invention discloses a remote control and a method and a device for detecting battery voltage of the remote control. The method for detecting battery voltage of the remote control includes: subjecting stabilized voltage of a control chip of the remote control to A/D (analog/digital) sampling to obtain a sample value, and connecting a reference voltage end of an A/D sampling channel arranged in the control chip to a battery of the remote control; calculating the battery voltage of the remote control according to the sample value; and displaying a battery prompt message according to the battery voltage. The battery voltage can be detected directly through the control chip of the remote control, the battery prompt message is displayed according to detection result, and battery level of the remote control is detected without increasing detection cost, and the method is simple and low-cost.

The invention discloses an automatic chemoluminescence immunity detecting system, which includes a cup transferring subsystem, a filling subsystem, a sample subsystem, a reagent subsystem, an incubating subsystem, a detecting subsystem, a washing subsystem and a central control unit. The system provided by the invention can be used for automatically completing operations including cup transferring, filling, incubation and detection in the sample detection, is completely intelligent in operation, needs no manual intervention, and stands at the leading edge of the domestic technology, has the mass sample detection function, effectively saves the manual labor cost, and has higher application value.

The invention provides a system and method for detecting overheight and overwidth of a vehicle based on laser calibration. The method includes the following steps: using the projection angles of a light band type laser emitter and a light beam type laser emitter in a system and the geometrical position relation of the light band type laser emitter and the light beam type laser emitter with the photographing direction of an image acquisition apparatus, a detection control processing apparatus identifying by imaging processing the horizontal displacement conditions and the length condition of a laser line segment from video and image data constituted by a plane laser band projecting to a vehicle which passes by a horizontal road lane, Then using a pre-calibrated vehicle height and width measuring function model to measure the value of the maximum height and the value of the maximum width of the vehicle, thus realizing the detection of the overheight and overwidth of the vehicle. The system has simple structure, strong practicality, and high measuring precision. The system can reach a detection rate at milliiseonds. The system can long time operate and implement automatic online continuous detection and overheight/overwidth alert to multiple vehicles with no pulling over is required, so that the system can avoid traffic congestion and has excellent marketing potential.

The invention provides an ultra-high temperature electromagnetic ultrasonic sensor and an acquisition method thereof. The ultra-high temperature electromagnetic ultrasonic sensor includes: a housing; a sensor assembly arranged inside the housing; a heat insulation structure arranged inside the housing and between the housing and the sensor assembly; where the ultra-high temperature electromagnetic ultrasonic sensor refers to An electromagnetic ultrasonic sensor capable of detecting equipment to be inspected with a temperature less than or equal to 750°C. Due to the heat insulation structure between the sensor assembly and the housing, when the ultra-high temperature electromagnetic ultrasonic sensor is used to detect high-temperature equipment, the heat insulation structure can delay the heat conduction of the high-temperature equipment to the inside of the housing for a certain period of time, thereby protecting Sensor components such as magnets and coils located inside the casing are protected from high temperature damage, so the function of detecting equipment to be inspected with high temperature can be realized.

The invention discloses a method and a device for cleaning air channels, and an air conditioner. The method includes acquiring attachment degrees of oil stain; determining pollution grades of the airchannels according to the attachment degrees; cleaning the air channels by the aid of the device under the control according to the pollution grades. The oil stain is attached into the air channels. The method, the device and the air conditioner have the advantage that the technical problem of influence on the air outlet quality of existing air conditioners due to the fact that existing air channels are easy to get dirty and are difficult to detach and clean can be solved by the aid of the method, the device and the air conditioner.

The invention provides a wearable device and a photoelectric pulse sensing assembly, and relates to the technical field of electronic devices. The divergence angle of light emitted by a luminous component in the wearable device can be decreased, the utilization rate of the light is increased, thus the detection accuracy of the heart rate, blood oxygen saturation degree and other parameters can beincreased, and power dissipation is reduced; the wearable device includes a substrate, one or more luminous components, light, and one or more lenses, wherein the luminous components are mounted on one side of the substrate, light is configured to emit one or more optical bands, the lenses are arranged on the light emitting sides of the one or more luminous components, each lens corresponds to oneor more luminescent components, and each lens can decrease the divergence angle of the light emitted by the one or more emitting components corresponding to the lens. The photoelectric pulse sensingassembly can be mounted in a wearable object, so that when the wearable object is worn on a target organism, the heart rate, blood oxygen saturation degree and other parameters of the target organismcan be detected.

The invention discloses a detection instrument for bonding strength of a waterproof layer of a bridge. The detection instrument comprises a driving motor, a transmission shaft driven by the driving motor, transmission gears and a roller wheel which are sleeved on the transmission shaft, racks engaged with the transmission gears, a moving box body driven to move forward by the racks, a tension sensor used for performing real-time detection on a tearing force acting on a detected waterproof layer, a data acquisition and control system used for analyzing and processing a signal detected by the tension sensor and controlling the driving motor, and a host computer, wherein the roller wheel is provided with a tearing tape; the tearing tape is connected with the detected waterproof layer through a tearing clip; the roller wheel and the transmission gears are coaxial and have the same pitch diameter; and the data acquisition and control system is an MSP430 singlechip and performs two-way communication with the host computer through a USB interface. The detection instrument has reasonable mechanical structure, small volume, light weight, high automation degree, and simple and convenient use and operation, can effectively perform the real-time detection and control on the detected waterproof layer, and greatly improve test accuracy.

The invention belongs to the field of medical image processing. The invention discloses an intracranial aneurysm detection method and system based on a convolutional neural network. The detection method is based on a three-dimensional time leap magnetic resonance angiography image (3D Time-of-Flight MR Angiography, 3D TOF MRA), and is characterized in that first of all, blood vessels are extracted, a series of cubic voxel blocks are extracted as ROIs (Region of Interest) along the central line of the blood vessel; maximum density projection is performed on each ROI (Region of Interest) in a plurality of directions to obtain a MIP (Maximal Intensity Projection) by taking the MIP as the ROI; the MIP graph is used as input, the trained convolutional neural network is used for classifying theMIP graph, an obtained classification result reflects whether the ROI contains the aneurysm or not, and then whether the intracranial aneurysm exists in the to-be-detected object or not is judged. According to the method and the system, the whole process of the method is processed, and the setting mode of each functional module component in the corresponding system device is improved, so that thedetection method and the detection system have relatively high classification accuracy and sensitivity.

The invention discloses a multifunctional robot with a slippage sensor for helping aged people to walk. The multifunctional robot comprises a robot grab bar (1), a robot chair (2) and a robot controller (3) for controlling the robot to walk, characterized in that the slippage sensor in contact with a user is arranged on the robot grab bar (1); the slippage sensor is connected with the robot controller (3) through a signal conditioning circuit; the robot controller (3) judges the behavior or state of the user according to the sensor signals collected by the slippage sensor, and drives the robot to perform helping behavior; and an operating bar is arranged on the robot chair (2) and connected with the robot controller (3) for receiving operating instructions formed by the user operating the operating bar. The robot can catch the slippage in real time to sense the motion behavior of the aged people, and the motion intention and tumble trend of the aged people can be detected in real time by the slippage sensor for sensation, thereby realizing multiple helping functions.

The invention discloses a method and a device for detecting the legality of a mobile terminal in a CDMA network. The method comprises the following steps: receiving an MEID/ESN and an IMSI which are reported by a mobile terminal under the condition of meeting the requirement of boot-up registration message self-reporting; comparing the received MEID/ESN and the received IMSI with a stored MEID/ESN and a stored IMSI; and determining that the mobile terminal is legal if the mapping relationship between the received MEID/ESN and the received IMSI and the mapping relationship between the stored MEID/ESN and the stored IMSI are the same, or determining that the mobile terminal is an illegal user, querying whether the mobile terminal is illegally occupied based on the reported MEID/ESN, and locking the mobile terminal through a CRM if the mobile terminal is illegally occupied. According to the embodiment of the invention, validity and legitimacy of common users can be detected and managed.

The invention relates to a spectrum detection system for diesel SCR ammonia pollution. The spectrum detection system comprises a photoelectric device unit and a gas path unit, wherein the photoelectric device unit comprises a laser, a splitter, a collimator, a laser driver, a signal generator, a photoelectric detector, a preamplifier, a lock-in amplifier, a data acquisition card and a host computer; the gas path unit comprises a gas pool, a standard gas module, an SCR purification system and a filtration system. The spectrum detection system realizes functions of real-time concentration monitoring, concentration data storage and display and the like of ammonia by using the TDLAS technology as the theoretical basis and combining with the reflecting pool and harmonic detection technology; the spectrum detection system is simple to operate, provides a solid technical basis for the field of detection and application of diesel ammonia pollution, realizes a detection and evaluation system for diesel ammonia emission, greatly improves the system detection accuracy and response speed, and provides new means for the research of emission reduction of a diesel and environmental monitoring.

The invention relates to a neural network optimization method and device, and a target detection method and apparatus. The neural network optimization method comprises the steps of obtaining positioninformation of a plurality of candidate boxes of a target object of a target type in a first image; according to the first image, the position information of the plurality of candidate boxes and a neural network, obtaining image features of image regions corresponding to the plurality of candidate boxes in the first image, and a prediction result of the target object in the candidate boxes relatedto the target type; screening out at least two target candidate boxes satisfying a similarity condition from the plurality of candidate boxes based on the image features and the prediction results respectively corresponding to the plurality of candidate boxes; and optimizing the neural network based on the prediction results respectively corresponding to the at least two screened target candidateboxes. According to the embodiment of the invention, the target detection performance of the neural network can be improved.

The invention relates to a single chip microcomputer controlled power grid detection and reset circuit, which is characterized by comprising a micro-control circuit, a main control circuit and an audion circuit, wherein a PA1 detection port of the micro-control circuit is connected with a 12V power supply through the main control circuit to form a power grid power on/power failure detection structure, a PA4 of the micro-control circuit is used as an output port and is externally connected with an external interruption port of a main control chip of a main control chip circuit through electrical resistance, the micro-control circuit controls an audion to switch on/off, and an output end of the audion circuit forms the reset circuit for the main control circuit; a single chip microcomputer chip PA4 port of the micro-control circuit respectively starts and stops outputting a 200HZ square wave signal according to the power on and power failure of the PA1 port, so that the main control circuit can enter a normal or power-save working mode. The single chip microcomputer controlled power grid detection and reset circuit has the beneficial effects that the circuit is simple in structure, the used components are less, and the economic benefit is increased.

The invention provides a message transmission method, device and equipment, and a machine readable storage medium. The method comprises the steps of receiving a to-be-forwarded message; updating an identity label field in the to-be-forwarded message, wherein the identity label field comprises information uniquely identifying local equipment; and forwarding the to-be-forwarded message, so that theopposite-end PE equipment identifies the sending-end PE equipment of the message according to the identity label field. According to the technical scheme of the invention, the unique exclusive equipment label is added to the forwarded message, so that the PE equipment at the opposite end can recognize the source of the received message, and a BFD detection function can be realized.

The invention belongs to the field of related equipment for manufacturing surface mount devices, and discloses tray-oriented SMD sampling and counting equipment. The tray-oriented SMD sampling and counting equipment comprises a material counting module, a pickup detection module, a material holding module, a matched control module and the like, wherein the material counting module is used for achieving conveying and slitting of a material strip and counting of to-be-detected elements; the pickup detection module is used for achieving visual positioning of to-be-detected elements, picking up the to-be-detected elements by a multi-degree-of-freedom manipulator and synchronously achieving the detection function; the material holding module is used for placing the elements before and after detection, and ensuring the accuracy of the positions and the postures of the elements; and the control module is used for achieving automatic control on the complete equipment. Through the tray-oriented SMD sampling and counting equipment, sampling of the elements on an SMD tray can be quickly finished; the sampled elements are recycled; in addition, counting of the elements on the tray can also be quickly and accurately finished; and slitting is selectively carried out under needed working conditions.