188results about How to "Little influence from external factors" patented technology

The invention discloses an attention detection method with the combination of sight detection. The method includes face detection, eye closing detection, eye sight detection and head deflection detection, images are captured through cameras, and eye closing characteristics, head deflection characteristics and sight characteristics of students in each frame are analyzed to determine whether the attention of the students is focused. According to the attention detection method, with the combination of the sight detection method, the problems that the students are in head emmetropia, eyes are open, and the sight is in an area outside a computer screen are solved, the concentration condition of the attention of the students during online learning can be detected, the method is advantaged by high accuracy, good stability and high reliability, and the method is scientific and practical.

The invention discloses a full-automatic chemiluminiscence tester and belongs to the field of chemiluminiscence testing.The full-automatic chemiluminiscence tester comprises a mechanical arm module, a refrigeration module, a power module, a reagent sample disk, a sampling needle component, a stirring component, a reaction cup frame, an incubation device, a magnetic separation component, a washing station component and a measuring room.Full-automatic management is achieved for mixing, reacting, incubating, magnetic separating, detecting and other procedures of a sample to be tested, the detection efficiency is improved, and operation errors are reduced.

The invention relates to a method for grading and utilizing waste material of sandstone system production, including the following steps: 1) sieving and washing are carried out; 2) slurry obtained by sieving is subject to separation of fine sand powder and slurry by virtue of a hydrocyclone grading device; 3) the fine sand powder is subject to high frequency sieving and dewatering, and the slurry is placed into a setting device, so as to further separate water and concentrated slurry; 4) water is returned to the washing step, and the concentrated slurry is subject to filter pressing or filtering and then is delivered to a waste material stock yard. In the method for grading and utilizing waste material of sandstone system production provided by the invention, a hydrocyclone grading device is added in slurry sand grading production process to separate fine sand powder and slurry, and a high frequency sieving dewater procedure is adopted, recycling of fine sand powder from slurry is realized, by adopting the method of the invention, more than 90% of useful material can be recycled from slurry, and more than 70% of recycling can be realized after waste water is purified.

The invention discloses a pipe jacking pipe joint retaining device, which comprises a machine frame, wherein the machine frame is arranged between a back jacking jack and a pipe joint to be jacked; first connecting elements are respectively arranged at two sides of the pipe joint to be jacked; the machine frame is provided with a reaction frame at each of two sides of the pipe joint to be jacked; and second connecting elements corresponding to the first connecting elements are arranged on the reaction frames. The pipe jacking pipe joint retaining device has the advantages that before the pipe jacking stopping and back jacking jack retraction, the backward retreating of a pipe jacking machine head and the pipe joint in a passage after the back jacking jack retraction is prevented by a reaction system of the reaction frames through the mutual connection coordination of the first connecting elements arranged at the two sides of the pipe joint and the second connecting elements arranged on the reaction frames. The defects of the pipe jacking pipe joint releasing construction are overcome; the backward retreating phenomenon of the pipe jacking machine head and the pipe joint after the main jacking jack retraction in the pipe jacking construction is reasonably and effectively controlled; and the stability of a pipe jacking front side soil body and the safety of a pipeline and a front soil body are ensured.

The invention discloses a piston-type gas flow standard device. A bearing plate is mounted on a bracket, the upper end of a piston cylinder is connected with the bearing plate, the upper end of the bearing plate is equipped with a sleeve, after a piston rod which is mounted inside the piston cylinder and connected with a piston passes through the sleeve, the upper end of the piston rod is connected with the lower end of a lead screw, the upper end of the piston rod is equipped with a guide plate two sides of which are respectively sleeved in a guide rod mounted inside the sleeve, a linear bearing mounted on the guide plate is in slide fit with the guide rod, the other end of the lead screw passes through the sleeve and is then connected with an encoder through a shaft coupling, a reducer and a stepping motor, the lower end of the piston cylinder is connected with an end cover which is provided with an exhaust pipeline, and the side face of the exhaust pipeline is provided with joint holes for mounting a temperature sensor and a pressure sensor. The standard gas of the device is generated by means of the motion of the piston, has the characteristics of being small in the impact from external factors, high in precision, reliable in operation, convenient in operation, short in detecting time and the like, and is particularly suitable for the detection of soap film flowmeter, suspended body flowmeter and diaphragm gas meter.

The invention relates to the field of information teaching, and discloses an attention judgment method, device and system, equipment and a storage medium. The method comprises the steps of obtaining avideo image of a target person, identifying a face image of a single frame image in the video image, and determining a first pupil sight line vector; Converting the first pupil sight vector into a second pupil sight vector under a world coordinate system, and calculating an intersection coordinate between the second pupil sight vector and a preset plane; Judging the position relation between theintersection coordinates and a preset area, and confirming whether the target sight line is deviated or not; And after all frames of images contained in the video image within the preset time are identified, determining the total number of times of sight line deviation, comparing the total number of times of sight line deviation with the preset number of times of deviation, and determining the attention state of the target person. According to the attention judgment method provided by the embodiment of the invention, the sight line direction vector is projected to the preset plane, the attention state of the target person is judged, and the method has the advantages of high real-time performance, high accuracy, high reliability and small influence of external factors.

A composite VDMOS device possessing a temperature sampling and over-temperature protection function belongs to the power semiconductor device field. In the invention, a VDMOS device, a polysilicon thermal diode and an over-temperature protection circuit are integrated. Through using a negative temperature characteristic of forward voltage drop of the polysilicon thermal diode, the polysilicon thermal diode is made on an insulating layer of a VDMOS device surface so as to realize sampling of a VDMOS device operating temperature. Based on a temperature sampling signal of the polysilicon thermal diode, the over-temperature protection circuit carries out partial pressure to a gate input voltage Vin of the whole composite VDMOS device so as to obtain a gate control voltage VG of the VDMOS device. Therefore, the over-temperature protection can be performed to the VDMOS device, which is characterized by: when the operating temperature of the VDMOS device reaches TH, turning off the VDMOS device; when the internal temperature drops to TL after the VDMOS device is turned off, starting the VDMOS device, wherein temperature return difference can be represented as a following formula: Delta T=TH-TL. By using the composite VDMOS device of the invention, the accurate sampling and the over-temperature protection can be performed to the VDMOS device so that thermal failure of the device can be avoided and a service life of the device can be prolonged. A structure is simple and sampling accuracy is high. The device is compatible with a VDMOS device technology. The device is monolithic and has many other advantages.

The invention relates to a method for adjusting real-time battery capacity during automobile charging. The method comprises the steps of: acquiring an open-circuit voltage with integral value Delta Q of a charging electric quantity ampere-hour at the peak according to a charging current I of a single battery; comparing the open-circuit voltage at a peak point and an open-circuit voltage at a standard curve peak; when a open-circuit voltage variation meets preset conditions, adjusting the battery capacity SOC; and if not, keeping the currently recorded battery capacity. The invention has advantages of high accuracy, simpleness, high data reliability, timely understand of the overall performance of the battery, better adaptability and intellectualization.

The invention discloses a large-scale server cabinet high in thermal diffusivity and space utilization rate. The large-scale server cabinet comprises separator plates, telescopic plates and sleeve plates arranged on a cabinet body. The server cabinet body is in the form of a rectangular box body; the number of the separator plates is two; the middle positions of the upper and lower ends of the separator plates are both fixedly provided with sliding blocks which are in the shape of T; the sliding blocks are arranged in slide chutes; the both side surfaces of the server cabinet body are provided with heat radiating holes; the separator plates inside the server cabinet body are provided with air vents; and fan blades are arranged in the air vents. The inside of the server cabinet body is well ventilated and has good heat dissipation. Heat accumulation inside the server cabinet is not easy, so that the phenomenon that the running speed of a server decreases due to overheating will not occur. The service life of the server is relatively long, and that the phenomena of heat dissipation performance degradation and decrease in the running speed of the server will not occur. The server cabinet is convenient to clean. The server is little influenced by the external factors. The server cabinet is suitable for popularization.

The invention discloses a method for counting the number of people under a bus scene, comprising the following steps of: establishing a passenger head target data set when the passengers getting on and off a bus and marking the data set; training the annotated dataset by a neural network, and detecting the on and off videos of bus by the result of training in order to realize the detection and recognition of passenger targets; on the basis of detecting and recognizing the passenger targets, obtaining the moving trajectory of the passenger target by using a method of matching the distance of the target frame, predicting the position of the passenger target when the passenger target is lost, and carrying out the template matching around the predicted position to obtain the accurate positioninformation; and eliminating the false target trajectory according to the confidence level and direction information of the passenger target in the target trajectory so as to realize the statistics ofthe number of passengers getting on and off the bus. The method of the invention has the characteristics of low cost, small influence by external factors, relatively small calculation amount, good robustness and accurate identification effect under complex and changeable scenes.

The invention discloses a bridge deflection detection method based on automatic zooming real-time image processing. Firstly, a rectangular target is fixed at a certain fixed position on a bridge, andthe position of a camera is regulated to image the target at the center of an image. The camera accesses an embedded processor, image information of the target is processed to obtain a position of a center point of the target, and coordinates of the position are used as reference values. Along with changes of a deflection of the bridge and a distance from the target to the camera, the size and thecenter position of the target appearing on an optical screen are changed; the target occupies most of position in the image by an automatic zooming technology; then a relative reference displacementof the center point of the target is obtained and a deflection variation is calculated. The bridge deflection detection method is convenient and simple to operate, adopts light and small hardware, isaccurate to measure and can implement real-time measurement.

The invention belongs to the field of municipal rainwater-sewage pipeline engineering technology and particularly relates to a large-caliber drainage pipeline construction assembly and a construction method thereof. The large-caliber drainage pipeline construction assembly comprises a pipeline and is characterized in that the pipeline is arranged on two pipeline underlay pieces, pipeline stabilizing pieces are respectively and fixedly connected above the pipeline underlay pieces and respectively tangent with the pipeline, and hoisting holes are respectively formed in the pipeline stabilizing pieces. The large-caliber drainage pipeline construction assembly has the advantages of being high in installation efficiency, integrity and stability of the pipeline are high, pipeline installation straightness and smoothness can be guaranteed, inconvenience caused by concreting twice can be avoided, and manufacturing cost is low.

Disclosed are a method for preparing and virus type definition test paper for foot and mouth disease and the using method. The test paper comprises O, A, Asia l, C four kinds of serum detecting test paper. The test paper comprises a PVC substrate plate, nitrocellulose membrane, an absorbing pad, a golden mark pad and a sample pad. The PVC substrate plate is installed at the most bottom layer; the nitrocellulose membrane is set on the middle part of the substrate plate; the absorbing pad is stuck on the left end of the nitrocellulose membrane, and the golden mark pad is set on the right end of the nitrocellulose membrane; the sample pad is set on the right upper end of the golden pad. The invention can identify the foot and mouth virus O, A, Asia l and C four serum type.

The invention discloses an optical fiber radiation thermometer based on a colorimetric method, and belongs to the field of high temperature measurement. The thermometer comprises an optical system and a circuit system, wherein lenses of a lens group are connected with a high-power Y-type power transmission optical fiber to form the optical system; the circuit system adopts signal dual-channel processing and comprises photoelectric detectors, a preprocessing module, a preamplifier, an AD sampling module, a signal processing module, a display module, a keyboard input module and an information interaction module. Signals are divided into two paths via the power transmission optical fiber and transmitted to the corresponding photoelectric detectors, optical signals are converted into current signals, the current signals are converted into voltage signals via the preprocessing module and the pre-amplification module, the signal processing module adopts a curve fitting algorithm for analysis, sampling signals are obtained, a corresponding temperature value is calculated through calibration, and difference setting is further improved through the interaction module. The optical fiber radiation thermometer structure based on the colorimetric method can be applied to measurement of a crystal furnace thermal field.

The invention discloses a method for testing wettability of glass fiber cloth. The method includes (1), fixing the glass fiber cloth to be tested on a loop and enabling surfaces of the glass fiber cloth to be horizontally flat; (2), dripping solvent on the glass fiber cloth from right above the glass fiber cloth drop by drop until the solvent drips out from the back surface of the glass fiber cloth, dripping a next drop of solvent after a previous drop of solvent completely wets the glass fiber cloth in a dripping process, and starting counting when the first drop of solvent drips until the solvent drips out from the back of the glass fiber cloth; (3), measuring the drip-in quantity I and the drip-out quantity i of the solvent in the process in the step (2); and computing the absorbing capacity L within unit time of the glass fiber cloth to be tested according to a formula of L=(I-i) / h. the total time of the dripping process is h. By the aid of the method, the wetting speed of the glass fiber cloth can be accurately measured, and accordingly the degree of the wettability of the glass fiber cloth is judged.

The invention relates to a control method and controller of hybrid energy storage, belonging to the field of a wind and light supplementary power generation technology. The technical scheme is as follows: current and voltage signals of a super capacitor (4), a storage battery (9) and a load (7) are collected by a main controller (1) through a voltage and current sampling circuit (2) of the super capacitor, the voltage and current sampling circuit (3) of the storage battery and the voltage and current sampling circuit (6) of the load, respectively; after the current and voltage signals are processed by the main controller, a bidirectional DC / DC (Direct Current / Direct Current) converter (8) is controlled through a driving circuit (5), so that the power generation work and the energy storage work of the super capacitor, the storage battery and the load are at the maximum power point. The control method and the controller of the hybrid energy storage, provided by the invention, have the advantages that: the storage battery is at an optimized charging / discharging working state all the time and is hardly influenced by external factors, working conditions of the storage battery are improved, and the charging / discharging time of the storage battery is reduced, so that the service life of the storage battery is prolonged, and the stability and the whole conversion efficiency of a wind and light supplementary power generation and energy storage system are improved.

The invention discloses an implicit damage monitoring and thermal runaway early warning device for vehicle-borne lithium-ion power batteries. The device comprises a carbon dioxide and ethylene combined gas sensor which is arranged in a battery pack module and is used for detecting the concentration of carbon dioxide and ethylene gases, a pressure sensor which is disposed at an indentation type pressure relief valve of a battery case and is used for detecting an internal pressure of battery bodies, a perfusion pipeline which is disposed in the battery pack module and is uniformly provided withfoam holes for discharging flame-retardant foams, multiple solenoid valves which are disposed at the corresponding foam holes, a flame-retardant foam storage tank which is disposed outside the batteries and is in communication with the perfusion pipeline, and a controller which is connected to the carbon dioxide and ethylene combined gas sensor, the pressure sensor and the solenoid valves and areused for controlling the operation of the solenoid valves. The invention also discloses an early warning method of the implicit damage monitoring and thermal runaway early warning device for the vehicle-borne lithium-ion power batteries.

The invention relates to a preparation method of an epoxy resin-based micro-filtration film. Firstly, under a certain temperature, the epoxy resin and amines such as diethylene triamine or triethylenetetramine is completely dissolved in polyethyleneglycol medium by a certain weight ratio, and the air bubble is then removed; the solution is cast or flow-cast on supporting material such as metal or plastic tape, and suitable temperature is kept. After a certain time, monomer solution generates polymerization and phase separation at the same time; gel is solidified as white epoxy resin-based nascent state film; the nascent state film is finally dipped in water, and the medium polyethyleneglycol is removed to obtain the micro-filtration film. Other organic solvents are not required to be added in the preparation process, with green environmental protection. The prepared micro-filtration film has good mechanical strength, uniform distribution of aperture, adjustable size, strong hydrophilicity, acid resistance, alkali resistance and solvent resistance; furthermore, the structure of the film is not damaged by high-temperature germicidal treatment under the temperature of 120 DEG C; the film has excellent performance and the method of the invention can be widely applied to the separation and filtration in the industries such as instrument analysis, water disposal and biological medicine, etc.

The invention discloses a vertical multiple-degrees-of-freedom high-precision detector for detecting the comprehensive performance of precision reducers. The detector comprises a high-speed end torque closed module, an attitude adjustment module, and a low-speed end torque closed module. The low-speed end torque closed module includes a vertically arranged low-speed end torque closed cylinder. A loading motor, a force-increasing reducer, a low-speed end torque sensor, a low-speed end circular grating and a reducer output shaft interface are arranged in sequence from bottom to top inside the low-speed end torque closed cylinder. The high-speed end torque closed module includes a vertically arranged high-speed end torque closed cylinder. A high-speed end torque sensor, a high-speed end circular grating and a reducer input shaft interface are arranged in sequence from top to bottom inside the high-speed end torque closed cylinder. The shell of a driving motor and the shell of a detected reducer are connected together by the high-speed end torque closed cylinder. The shell of the loading motor and the shell of the detected reducer are connected together by the low-speed end torque closed cylinder. The detector is less affected by external factors, and is of high measurement precision.

A vertical integrated public hand sterilization intelligent terminal comprises a supporting mechanism and a hand sterilizer; the hand sterilizer comprises a shell, and a sterilizing liquid spraying module and a liquid level detection module arranged in the shell; the sterilizing liquid spraying module includes a sterilizing liquid storage tank, a peristaltic pump, an atomizing nozzle and a sensing probe; the input end of the peristaltic pump is connected with the sterilizing liquid storage tank, the output end of the peristaltic pump is connected with the atomizing nozzle, the atomizing nozzle is arranged in a sterilizing window, the sensing probe is also arranged in the sterilizing window, and the sensing probe is connected with the peristaltic pump; the liquid level detection module includes a detection unit, a counting unit, a calculating unit, and an output unit which are connected in sequence. By employing the automatic detection technology, the vertical integrated public hand sterilization intelligent terminal calculates residue of the sterilizing liquid accurately in real time via analog calculation mode, the residue of the sterilizing liquid can be reflected accurately; the liquid level detection module is integrated into a functional chip, takes less space after being mounted and bears little influence by external factors.

The invention discloses a method for testing wettability of electronic-grade glass fiber cloth. The method comprises the following steps of: (1) preparing a mixed reagent, wherein the mixed reagent comprises the following components 60-99wt% of mixed solvent, 1-40wt% of indicating agent and 0-30wt% of auxiliary; (2) selecting the electronic-grade glass fiber cloth with qualified wettability, dripping a rated amount of mixed reagent in the step (1) at an appointed height on the surface of the electronic-grade glass fiber cloth, starting timing, measuring the dispersion length of the mixed reagent along a warp direction and a weft direction within unit time, recording, and taking the dispersion length as standard data; (3) selecting the electronic-grade glass fiber cloth to be tested, and testing the electronic-grade glass fiber cloth by the same method in the step (2) to obtain test data; and (4) comparing the test data with the standard data, so as to judge whether the wettability of the electronic-grade glass fiber cloth to be tested is normal. According to the test method, a test requirement for quick and continuous detection is met; and the test method is suitable for working occasions in which the wettability of a large amount of glass fiber cloth can be tested quickly and accurately.

The invention discloses a reverse osmosis-based high-concentration sewage treatment method. The reverse osmosis-based high-concentration sewage treatment method comprises the following steps of firstly pre-filtering and pre-heating the sewage; carrying out the reverse osmosis treatment on the preheated sewage; feeding the preheated sewage to the bottom of a reverse osmosis treatment device; feeding the sewage on the bottom into a primary sewage laminar flow passage through an elongated distributing hole, dispersing the sewage to the periphery of a laminar flow disc through a spoke-shaped guide passage arranged on the surface of the laminar flow disc, enabling the sewage to upwards reversely enter the other side of the passage when the sewage flows to the edge of the laminar flow disc, then converging the sewage onto a central hole, enabling the sewage to upwards reversely enter a secondary sewage laminar flow passage through the elongated distribution hole, circulating the sewage to form a radiated S-shaped route from bottom to top, and finally discharging the sewage through a concentrated liquid discharging port; a water purification component permeates a reverse osmosis membrane of a filter membrane assembly to be conveyed to a permeate liquid outlet to be discharged. The reverse osmosis-based high-concentration sewage treatment method has the advantages of high sewage treatment efficiency, high water yield, low energy consumption, long service life of the filter membrane and the like.

The invention provides a relative position measurement method through radio positioning and a measurement device thereof. The measurement device comprises a transmitting unit, receiving units and a signal processing unit. Receiving signals of each receiving unit are extracted by recording the position of each receiving unit, the distance between all the receiving units and the distance between each receiving unit and the transmitting unit under the initial state so as to solve phase information. The position of the transmitting unit relative to a platform can be solved according to the space quadrilateral geometric relation of the receiving units and the transmitting unit. The phase ambiguity problem is solved, and measurement of the direction and the relative position of moving points can be realized through transmitting signals of single frequency so that the system is easy to realize, high in reliability and low in influence of external factors and can control the moving distance and the position of the moving nodes in real time and can be widely applied to the system requiring long-term monitoring and early warning.

The invention discloses an incubation and magnetic separation device applied to chemiluminescence determination and belongs to the field of chemical luminescence determination. The incubation and magnetic separation device applied to the chemiluminescence determination comprises an incubation device and a magnetic separation device, wherein the magnetic separation device is arranged at one side of the incubation device, so that a magnet on a magnet frame corresponds to a bottom side face of a reaction cup on a reaction cup hole. The incubation magnetic separation device integrates an incubation function and a magnetic separation function; a temperature range and magnetic selection time are accurate and adjustable; the device is stable in properties and simple to operate. The incubation device adopts contact type direct heating and has a good incubation effect; the magnetic separation device has the advantages of good buffering effect and reduction of loss of magnetic beads and the like.

The invention belongs to the technical field of flight security, in particular relates to a flight equipment anti-collision method, device and security system based on position discrimination by listening, and aims to solve the effective obstacle avoidance problem when flight equipment encounters a non-cooperative dynamic obstacle while flying in the air. The system in the invention comprises a processor, an auditory module, a flight power module, a visual module and a navigation module; the auditory module comprises a sound collection module, a noise processing module, a sound source locating module and a speed vector module; and the visual module comprises an image acquisition module and an image identification module. According to the flight equipment anti-collision method, equipment and security system based on position discrimination by listening in the invention, the sound information of the dynamic obstacle is detected through the auditory module; the flight state of the dynamic obstacle is processed and determined; then, with the help of information assistance of the visual module, the navigation module and the like, the processor determines whether collision will occur or not according to an anti-collision algorithm; therefore, for the purpose of avoiding collision of the dynamic obstacle, the flight scheme of the flight equipment is adjusted; and in addition, unmanned flight equipment effectively realizes obstacle avoidance of the non-cooperative dynamic obstacle.

The invention discloses a horizontal high-precision detector for comprehensive performances of a precision speed reduction device. The horizontal high-precision detector comprises a high-speed end moment closed module, a positioning adjusting module and a low-speed end moment closed module, wherein the low-speed end moment closed module comprises a horizontally arranged low-speed end moment closed cylinder; a supporting leg is arranged at the bottom of the low-speed end moment closed cylinder; a loading motor, a reinforcement speed reducer, a low-speed end torque sensor, a low-speed end circular grating and a speed reducer output shaft transform interface are arranged in the low-speed end moment closed cylinder from the right part to the left part in sequence; the high-speed end moment closed module comprises a horizontally arranged high-speed end moment closed cylinder; a high-speed end torque sensor, a high-speed end circular grating and a speed reducer input shaft transform interface are arranged in the high-speed end moment closed cylinder from the left part to the right part in sequence; the high-speed end moment closed cylinder and the low-speed end moment closed cylinder are coaxially arranged and are connected with each other through a tested sensor. The horizontal high-precision detector is little affected by external factors and high in measurement precision.

The invention discloses an inspection method of the detection accuracy of an open type animal breathing calorimetric system. The inspection method comprises the following steps of: accurately weighing a certain molar quantity of chemical reagents, and placing into a breathing calorimetric chamber of the open type animal breathing calorimetric system to be inspected; respectively preparing quantitative oxygen, methane and carbon dioxide gases through a chemical reaction method to simulate an animal breathing experiment; and comparing gas recovery values and theoretical values which are actually detected by the open type animal breathing calorimetric system to determine the detection accuracy of the open type animal breathing calorimetric system. The invention has the advantages of quantitatively preparing the gases by adopting the chemical reaction method, being controllable in experimental speed, rarely influenced by external factors, high in accuracy, simple and reliable in method and high in repeatability and fast evaluating the accuracy of a detection result of the open type animal breathing calorimetric system.

The invention discloses an infrared spectrum analysis method for identifying ABO blood types on the basis of tissue slices. The method comprises the following steps of firstly collecting tissue slicesfrom human bodies with different blood types; measuring the infrared spectrum; performing spectrum data processing on the obtained spectrum by a chemometrics method; building a model for identifyingthe ABO blood types by using a mode recognition analysis method; then, taking human body tissue slices with unknown blood types; collecting the spectrum by the same method; performing spectrum data processing; and finally performing prediction by using the built model. By using the method, the ABO blood types can be accurately, durably, objectively, simply, conveniently and fast identified on thebasis of the tissue slices; the method is applicable to the tissue slices in different positions; the joint nondestructive use of the same undyed slices with pathological diagnosis can be realized; the obtained blood type identification result can provide the confirmation for blood type identification result obtained by other methods; important significance is particularly realized in forensic examination; and the blood type confirmation can be performed on broken cadavers or tissues remained in accident sites so as to fast and accurately assist the individual recognition.

The invention discloses a casting blank cutting positioning method and a system. The method comprises the steps of: receiving a drawing roller rotating signal of a withdrawal and straightening machine; determining an operation length of a casting blank according to the drawing roller rotating signal; generating and sending a head blank cutting command to a cutting device so as to control the cutting device to perform the head blank cutting for the casting blank when the operation length is equal to a sum of a basic length and a preset head blank length, wherein the basic length is a distance from a liquid level of a crystallizer to an original position of a cutting car; zeroing the operation length; and generating and sending a cutting command to the cutting device so as to control the cutting device to perform the finished-product cutting for the casting blank when the operation length reaches a preset finished-product cutting length. The casting blank cutting positioning method and system, provided by the invention, are used for solving the technical problems of low precision and high equipment maintenance cost in a casting blank cutting positioning method of the prior art, and realize the technical effects of improving the cutting positioning precision and reducing the equipment maintenance cost.