205results about How to "Realize continuous detection" patented technology

The invention provides a continuous measuring device for volatile organics in soil. The measuring device comprises a hollow shell and is characterized in that a drilling bit is arranged at the lower end of the shell; a thread connector is arranged at the upper end of the shell; a carrier gas leading-in pipe and a carrier gas leading-out pipe are arranged in the shell; the carrier gas leading-in pipe is communicated with the bottom of the carrier gas leading-out pipe; an opening is formed in the side wall, near the carrier gas leading-out pipe, of one side of the shell; a waterproof permeable thin film is arranged at the opening; an opening is formed in the carrier leading-out pipe and is communicated to the permeable thin film; a heating part is arranged at the side wall of the shell below the waterproof permeable thin film. The device is convenient to operate, short in testing period, low in logistics requirement and high in measuring accuracy and quite suitable for pollutant investigation of cities and suburban oil which need a large amount of outer field measuring and analyzing.

The embodiments of the invention disclose a blockchain network data processing method, device and equipment, and a storage medium. The method comprises the following steps of detecting the validity ofa stored intelligent contract in a blockchain; and according to a validity detection result, executing the subsequent operation of the intelligent contract. In the technical scheme, a problem that the intelligent contract in an existing blockchain network is not adjusted after storage is confirmed so that a single function is possessed is solved; and the real-time monitoring and adjusting of theintelligent contract are realized and the validity of the intelligent contract is guaranteed.

The invention discloses a system and a method for detecting temperature of a converter flame. The system comprises an image acquisition module, an image processing module and a computation module, wherein the image acquisition module is used for acquiring image information of the flame at a converter mouth; the image processing module is used for pre-processing the image information of the flame so as to obtain a flame image; and the computation module is used for computing the temperature value of each pixel in the flame image according to the nonlinear relation between the radiation spectrum and the temperature of an object and obtaining the temperature value of the flame at the converter mouth based on the pixel temperature values. As the temperature of the flame at the converter mouth is detected by the system on the basis of analysis on the image information of the flame at the converter mouth, the image acquisition module can continuously acquire the flame image in real time, and consequently the temperature of the flame at the converter mouth can be continuously detected by the system and the method.

The invention relates to a driver fatigue detection system and belongs to the technical field of detection equipment. The driver fatigue detection system comprises a CCD (charge coupled device) camera connected with a DSP (digital signal processor) through a video input decoder, and detection images are subjected to mode identification and processing. An infrared light source of the CCD camera is composed of two groups of infrared diodes, and the infrared diodes are uniformly distributed on a same ring of the same plane and same axis and are optionally switched. The infrared diodes emit infrared light of 850nm and 950nm in wavelength. The driver fatigue detection system is characterized in that judgment of lip syncing is added on the basis of human eye area judgment, so that probability of judgment missing or mistakes is decreased. By a method for differentiating odd-even frames of the images, positions and characteristics of eyes and lips can be accurately detected, and fatigue degree of a driver can be accurately detected. By the aid of a Kalman filter and a Mean-shift algorithm, the positions and the characteristics of the eyes and the lips are continuously detected; by a short-time tracking strategy, the eyes and the lips are tracked, and prediction is realized.

The invention discloses a laser overhead contact system wire inspection device and method, and relates to the technical field of tramcar detection. The device comprises a measuring trolley, an imaging recognition device, a laser measuring device and a servo tracking device; the measuring trolley comprises a T-shaped frame and three wheels arranged at three endpoints of the frame respectively, and the frame is provided with a horizontal sensor and a track gauge sensor; the imaging recognition device is arranged on the frame and used for collecting an image and recognizing the position of an overhead contact system wire; the laser measuring device is arranged on the frame, comprises a rotating center and is used for measuring the distance between the overhead contact system wire and the rotating center and an included angle between lasers of the laser measuring device and a frame plane; the servo tracking device is connected with the laser measuring device and drives the laser measuring device to rotate around the rotating center. Accordingly, various parameters of an overhead contact system can be continuously and automatically tracked and measured.

The invention discloses an online monitoring system for intermediate volatile organic compounds (IVOCs) and an online monitoring method for monitoring the concentration of IVOCs in atmosphere by adopting the online monitoring system. The online monitoring system comprises a sample feeding device, a sample loading and sampling device and a detection device. The device can realize the continuous detection on IVOCs in atmosphere. The monitoring method is realized on the basis of the online monitoring system. The monitoring method comprises the following steps: (1) mixing to-be-detected gases and (2) continuously feeding samples, sampling and detecting the gas mixture. The online monitoring system is small-size, simple in operation and low in cost. The variation tendency of IVOCs in the atmosphere can be known through the detection of the online monitoring system.

The invention provides simultaneous, rapid and continuous detection of multiple proteins, nucleic acids or pathogens by using a nanometer probe, paramagnetic micro-nano-particles and a microfluidic chip. According to the present invention, a monoclonal antibody or complementary nucleic acid sequence modified nanometer probe and antibody or nucleic acid modified magnetic micro-nano particle are used as detection reagents, a multi-channel microfluidic chip is used as a detection reaction cell, the antibody or nucleic acid modified magnetic micro-nano particle are immobilized on the bottom portion of the reaction cell by using a magnetic field to form a rewritable detection substrate, and an ultraviolet visible spectrophotometer, a fluorescence detector or an electrochemical detector is used as a signal acquisition device, such that the simultaneous and rapid detection of multiple proteins, nucleic acids or pathogens can be achieved; and based on the rewritability of the nanometer immune substrate and the anti-adhesion property of the chip material, the detector can achieve the continuous testing of different samples so as to substantially improve the detection automation and the sample treatment ability, and has wide application values in the fields of disease diagnosis, infectious disease monitoring, food hygiene and safety monitoring, and the like.

The invention discloses a gated complementary type photon counting system, which comprises a clock circuit module, an active quenching detection module, a register module and a processing module. Theclock circuit module comprises a frequency-locked loop circuit and a non-overlapping clock generation module. The active quenching detection module comprises a plurality of detection units. Each detection unit comprises an APD detector, an active quenching circuit and a counter. The detection units are arrayed in order. The detection units in odd locations and the detection units in even locationsform two detection arrays respectively. The complementary type photon counting system is applied to the high-speed single photon counting imaging field, and can effectively suppress unfavorable influence of afterpulse effect, dark counting and crosstalk between the detection units on detection rate, thereby improving photon counting detection rate and accuracy.

The invention discloses a full-automatic concentration measurement device based on surface plasmon resonance technology, which is composed of a liquid processing system, a SPR sensor, a signal detection and controller and a computer. The liquid processing system comprises a sample cell, a multiposition valve, a micro-flow cell, an injection pump, a waste liquid tank and a pump valve controller. The SPR sensor is a miniature non-scanning integrated SPR sensor; the signal detection and controller comprises a control chip C8051F020, a sensor control circuit, a signal processing circuit, an RS232 serial interface and a USB interface circuit and is used for controlling the SPR sensor, receiving SPR light intensity distribution signals of the sensor and transmitting the signals to a computer after simple processing and also for transmitting instructions between the computer and the pump valve controller; and the computer is used for transmitting various control or measurement instructions to the signal detection and controller and calculating the refractive index of a sample by analyzing the SPR light intensity distribution signals, thus obtaining the concentration of the sample to be detected according to a constructed model concerning the sample concentration and the difference in refractive index between the sample and a buffer solution. The invention has the advantages of high generality, high measurement accuracy, less samples, high automation degree, small size and low cost.

The invention discloses a coal mass strength distribution characteristic continuous detecting method and device. The method includes the steps of connecting a short-circuit test element for detecting the torque, drilling pressure and drilling depth of a real-time detection drill bit between the drill bit and a drill stem, recording and storing the detected torque, drilling pressure and time signals of the drill bit through the short-circuit test element, converting the torque, drilling pressure and time signals into vibration signals or electromagnetic signals, transmitting the vibration signals or electromagnetic signals to a signal receiver, conducting analysis through a signal processor to obtain a depth-torque curve and a depth-drilling pressure curve, and conducting comprehensive comparing and analyzing on the real-time curves and information stored in the short-circuit test element to obtain coal mass strength distribution characteristics. By means of the method and device, the current situations that underground coal mine coal mass strength testing complexity is high, advanced detection is difficult, and test results can hardly meet prediction requirements are broken through, the coal mass strength distribution characteristic continuous detection in the drilling process is achieved through drilling information, and the method is easy and convenient to implement, scientific in test principle, accurate in result, intelligent, efficient, advanced and practical and has great application prospects in the technical field of mine dynamic disaster forecasting and early warning.

The invention discloses a rolling type motion sensor device and a using method thereof. A sensor (1) is fixedly mounted on the wheel axle (4) of a rolling wheel (2), points to the coupling direction, and moves on a medium surface together with the rolling wheel (2); and the sensor is indirectly coupled with the medium surface, on which the sensor (1) moves, through a wheel axle surface (3), so that a seismic signal can be transmitted to the sensor mounted and coupled onto the wheel axle (4). A seismic source (13) and the rolling wheel (2) continues moving forward at the same time; a seismic signal collecting instrument (7) is used for completing the sequent collection of the seismic exploration records of the medium surface; the sequentially-collected seismic exploration records form a seismic arrangement; and the seismic arrangement is used for exploring and recognizing the potential hazards (12) below the rolling medium surface. The sensor maintains the sensor mounting and coupling direction during moving, realizes sequent collection of the seismic signals during rolling forward, is a key component suitable for continuous detections for potential hazards (12) of a roadbed or concrete structure quality.

The invention provides a multipoint pulse wave detection method and device.The method comprises the steps that two paths of pulse wave signals at the wrist of a human body are collected, the pulse wave signals are sequentially subjected to low-pass filtering, pulse signal cycle solving, periodical rectangular pulse construction and independent component analysis constraining, interference of motion artifacts in the pulse signals is eliminated, and pulse wave signals free of motion interference are obtained; meanwhile, a glove is adopted to serve as a carrier, reflecting optoelectronical sensors and a data transmission module are installed on the glove to collect and send the pulse wave signals, and a signal processing module in a mobile terminal receives the pulse wave signals and conducts corresponding artifact eliminating processing.The multipoint pulse wave detection method and device have the advantages that richer human body cardiovascular system physiological information can be obtained from the pulse wave signals, the motion artifacts in the signals can be well eliminated, and more pulse wave waveform characteristics can be recovered.

The invention provides a detection system of laser printing quality and a method thereof, which are based on CCD imaging and which are used for detecting the printing quality of the detected product in the target detection position. The system comprises an optical imaging system and an image processing system. The optical imaging system comprises a linear array CCD camera, an optical lighting component and an installation regulating component; the optical lighting component is superposed on the normal line of the target detection position; the included angle of the linear array CCD camera and the target detection position is more than 0 degree and less than 90 degrees; the installation regulating component is respectively connected with the linear array CCD camera and the optical lighting component. The detection system adopts the CCD imaging method to collect high-quality images of laser printed matters, which are processed by the image processing system, and realizes the automatic detection of the quality of the printed matter in the special technologies of gold tooling, silver tooling, laser, and so on in the current printing industry.

The invention discloses an electromagnetic ultrasonic probe for detecting an ultrahigh-temperature casting and forging piece and an online rapid detection method. The electromagnetic ultrasonic probecomprises a probe shell, a permanent magnet group arranged in a cavity of the probe shell, a corundum sheet arranged in a hollow area at the bottom of the probe shell, an exciting / receiving coil arranged above the corundum sheet, a hollow pipe sequentially penetrating through the probe shell, the permanent magnet group, the exciting / receiving coil and the corundum sheet, the plurality of water inlets and the plurality of water outlets communicated with the cavity of the probe shell, and a circulating cooling channel formed by a cavity between the probe shell and the permanent magnet group, theexciting / receiving coil and the hollow pipe. Continuous detection of the 1200 DEG C ultra-high temperature casting and forging piece can be realized, and the problems of weak ultrasonic echo, low signal-to-noise ratio and low spatial resolution caused by thick dendrites of a continuous casting billet and high attenuation of a solid-liquid interface in the 1200 DEG C ultra-high temperature castingand forging thickness detection process of an existing electromagnetic ultrasonic probe are solved.

The invention discloses a marine ranching water quality detection system. The marine ranching water quality detection system comprises a detection module for detecting a water sample, wherein the detection module comprises an atomization cavity for atomizing the water sample, a detection cavity and a sampling module for acquiring and sampling the water sample of a marine ranching, a water quality sensor is arranged inside the detection cavity, the atomization cavity is connected with the detection cavity through a jet mechanism, the sampling module comprises a plurality of metal cages connected together in series, and resin blocks are arranged in the metal cages. The invention further discloses a detection method of the marine ranching water quality detection system. The marine ranching water quality detection system can overcome the shortcomings in the prior art and improve the water sample detection accuracy.

The invention provides a mining-method tunnel excavation and first support quality detection method. The method comprises the following steps: 1) determining an optimum precision point and laser scanner laser beam maximum incidence angle; 2) determining distance between measuring stations and the total number of measuring stations of a laser scanner; 3) obtaining tunnel first support surface pointcloud data, wherein the point cloud data refers to a three-dimensional coordinate of a first support surface point of the tunnel under a coordinate system of a tunnel monitoring reference point; 4) determining tunnel section mileage according to the tunnel section inspection requirements in the construction site; 5) projecting the extracted three-dimensional point coordinate onto a tunnel sectionto be detected; 6) determining data points for fitting and carrying out fitting to construct a curve, wherein the curve is the actual boundary obtained through tunnel section excavation; and 7) determining tunnel section overbreak and underbreak amount and position. The method realizes automatic, high-precision and continuous detection of mining-method tunnel first support quality.

The invention relates to the field of automatic water level detection, in particular to a device and a method for detecting water level. The device is characterized in that a capacitor probe is arranged in a to-be-detected container, and the capacitor probe and ground are arranged into a detection capacitor; a medium of the capacitor consists of air and / or to-be-detected liquid; a real-time capacitance value of the detection capacitor is obtained by detecting capacitor charging time of an RC circuit comprising the detection capacitor, so as to further obtain a water level value of the to-be-detected liquid. The detection device has the advantages that the structure is simple, any water level can be continuously detected, and the detection accuracy is very high.

The invention discloses a flow detection reagent for human anti-Mullerian hormone, a preparation method of the flow detection reagent and application. The reagent is characterized by comprising an antibody Ab1-microsphere conjugate used for detecting the content of anti-Mullerian hormone in human serum or blood, and an antibody Ab2-fluorescent molecular marker. The preparation method comprises the following steps: preparing and pairing human anti-Mullerian hormone monoclonal antibodies, coupling between the human anti-Mullerian hormone monoclonal antibodies and carrier microspheres, and fluorescent molecular marking of the monoclonal antibodies. The flow detection reagent has the advantages that the content of AMH is directly judged according to fluorescence values, an experimental result can be obtained only by adding a blood sample into the reagent, the experimental operation steps during detection are simplified, moreover, high-throughput and multi-sample continuous detection can be realized through an automatic sample adding system, the detection efficiency is greatly improved, and the detection sensitivity can reach 0.01ng / ml.

The invention belongs to the field of road engineering material detection equipment, and relates to an aggregate morphological characteristic detection system and method based on 3D point cloud data.The system comprises an acquisition mechanism, a processing mechanism and a display unit. The display unit is used for displaying and inputting the acquisition parameters of a set aggregate, the acquisition mechanism is used for placing the aggregate, acquiring the 3D point cloud coordinate information of the aggregate and transmitting the acquired 3D point cloud coordinate information to the processing mechanism, and the processing mechanism is used for receiving the 3D point cloud coordinate information transmitted by the acquisition mechanism and the acquisition parameters inputted by the display unit, extracting and calculating the morphological characteristic parameters of the aggregate from the 3D point cloud coordinate information, carrying out index evaluation on the morphologicalcharacteristic parameters according to the acquisition parameters, and displaying the morphological characteristic parameters through the display unit. The system and the method of the present invention can carry out 3D detection on each aggregate, are not influenced by the light, are stable in test result and high in precision, can carry out the batch detection, can evaluate and optimize the aggregate quality rapidly, and can control the construction quality effectively.

The invention discloses an automatic water quality detection device. The automatic water quality detection device comprises a quantitative sampling pump, a water sample detection tank, a sample chamber, a detection chamber, a quantitative liquid feeding device, a microscale continuous liquid feeding device, a micro-flow meter, a treatment module, a power supply module and a controller. The water sample detection tank is fixed in the sample chamber, one side of the sample chamber is provided with a light emitting chamber and the water sample detection tank is connected to the quantitative sampling pump through a pipe. The automatic water quality detection device can eliminate the analysis error between different analysts, improve the analysis efficiency, realize fast detection and early warning of key detection indexes such as calcium hardness and total alkalinity of the circulating cooling water system, remind to reasonably control the concentration multiple during the circulating water system operation, prevent unnecessary discharge of pollutants and save water resources. The device can effectively guide the stable feeding of a water treatment agent and prevent fluctuation of theconcentration of the water treatment agent. The device realizes continuous analysis, the operating environment is safe, the data is reliable, the error is small, and the analysis data can also be transmitted in real time.

A railway steel rail center detection vehicle comprises a walking trolley and a prism measuring device. The walking trolley comprises a frame and a hand push rod, a nylon wheel is arranged at the bottom of one end of the frame and arranged on the left steel rail, and a steel groove wheel is arranged at the bottom of the other end of the frame and clamped on the right steel rail; the prism measuring device comprises a prism, a prism bar and a knuckle bearing seat, a mounting hole is formed in the middle of the knuckle bearing seat, a knuckle bearing is arranged in the mounting hole, limiting holes are formed in the two side faces of the knuckle bearing seat, bolts are arranged in the limiting holes and abut against the knuckle bearing, and the knuckle bearing seat is connected with the frame. One end of the prism bar is connected with the prism, the center of the prism coincides with the center of the right steel rail, the other end of the prism bar is in threaded connection with one end of a prism bar connector, the other end of the prism bar connector is inserted into the knuckle bearing, and a universal support is connected between the prism bar and the frame. The railway steel rail center detection vehicle has the advantages of high measurement precision, high working efficiency and low cost.

The invention discloses a system for detecting the paving temperature segregation of an asphalt pavement. The system comprises a temperature sensor group which is arranged on paving equipment and is 10-15cm from the pavement, a distance collection device used for collecting a paving distance and a paving speed, a processing device which is used for receiving temperature information of the pavement collected by the temperature sensor group, receiving paving distance information and paving speed information collected by the distance collection device and performing analysis processing, a display device which is used for displaying analysis processing results for the temperature information, the paving distance information and the paving speed information from the processing device, and a storage device which is used for soring the temperature information, the paving distance information and the paving speed information. The invention further discloses a method for detecting the paving temperature segregation of an asphalt pavement. By adopting the system and the method for detecting the paving temperature segregation of an asphalt pavement, the temperature segregation detection results are accurate.

The invention relates to an aluminum electrolysis feeding process, in particular to a precise feeding technological method for aluminum electrolytic bath alumina dense-phase conveying system, which comprises the following steps: real-time level detection; calculation of adding amount of alumina; adjustment of fluoride salt proportion amount; feeding of series electrolytic bath bin. The aluminum electrolysis feeding process has the advantages of continuous level detection of the electrolytic bath, high precision of level detection up to 5%, precise feeding of alumina fluoride salt in the alumina dense-phase conveying system, improved qualified rate of electrolytic bath molecular ratio, stable operation of the electrolytic bath, stable control of feeding as required and single-bath electrolyte molecular ratio, and applicability to precise feeding of alumina fluoride salt in the alumina dense-phase conveying system of the aluminum electrolytic bath.

The invention discloses a liquid level measuring method, a liquid level measuring device, equipment and a liquid level detecting circuit. The liquid level measuring device comprises a liquid level probe, the liquid level detecting circuit and a master controller. The liquid level probe is arranged in a container, and the top of the liquid level probe and a shell of the container are connected withthe liquid level detecting circuit; the master controller is connected with the liquid level detecting circuit and is used for determining the internal liquid level of the container according to electric parameters outputted by the liquid level detecting circuit. The liquid level measuring method, the liquid level measuring device, the equipment and the liquid level detecting circuit have the advantages that the water level can be continuously detected by the aid of the liquid level measuring method, the liquid level measuring device, the equipment and the liquid level detecting circuit; theliquid level probe is long in service life and simple in design as compared with infrared sensors, the cost can be saved, and the liquid level measuring method, the liquid level measuring device, theequipment and the liquid level detecting circuit are high in accuracy.

The invention relates to a beverage can tightness detecting device and a detection method thereof. The beverage can tightness detecting device comprises a supporting platform, a conveying belt mechanism and more than one electric push rod, wherein the conveying belt mechanism is arranged at one side of the supporting platform and is used for conveying beverage cans; the electric push rods are sequentially arranged at an interval at the edge of one side of the supporting platform and along the conveying direction of the conveying belt mechanism; the pushing direction of the electric push rods is vertical to the conveying direction of the conveying belt mechanism; a pressure sensor is also arranged at the front end of a push part of each electric push rod; the electric push rods and the pressure sensors are electrically connected with a main control unit which is arranged on the supporting platform. The beverage can tightness detecting device disclosed by the invention has the beneficial effects that the detection time is greatly shortened by judging whether the tightness of canned beverage is qualified or not by detecting the pressure of each beverage can, and unqualified beverage cans can be sorted in time, so the detecting device is high in detection efficiency, high in practicability and high in automation degree.

The invention discloses a lithium battery core cladding structure X-Ray detection system and a detection method. The lithium battery core cladding X-Ray detection system is characterized in that the lithium battery core cladding X-Ray detection system comprises a transmission device, a feeding and discharging device and an X-Ray detection device. A lithium battery core cladding is transferred and transported to the feeding and discharging device through a transmission device. The X-Ray detection device carries out the structure detection to the lithium battery core cladding transported from the feeding and discharging device. After detection the lithium battery core cladding is transported to a detected area. The X detection device comprises a frame, an automatic door, a display device, a operating table and a detection part. The display device and the operating table are arranged on the side of the frame. The automatic door is arranged on the front side of the frame. The detection part is arranged at the lower end of the frame. According to the lithium battery core cladding structure X-Ray detection system and the detection method, a series of automatic technological process of automatic transmission, automatic feeding and discharging and automatic detection of the lithium battery core cladding is realized. A protective net is adopted in the feeding and discharging device area, and the safety of the system and personnel is protected. In addition, the X-Ray detection device uses a fully enclosed protective cover, and the X Ray radiation is effectively isolated.

The present invention relates to an online detector, wherein an ion mobility spectroscopy technology is adopted as a basic detection technology, a sample injection rotation disk is controlled by a rotation motor, sample thermal analysis and headspace injection technology are combined, a sample is not subjected to complex pretreatment and is collected to the surface of a sampling sheet, the rotation motor controls the sample injection rotation disk so as to make the sample on the sampling sheet be subjected to continuous sample injection thermal analysis, and the obtained sample enters the detector through carrying with carrier gas so as to be subjected to online detection analysis. According to the present invention, the online detector is used for the continuous online detection of propofol anesthetics in human blood during surgeries so as to guide physicians in clinical administration.

The invention discloses an ARP cheating detection method, a device and a terminal under a non-Root environment, belonging to the technical field of network security. The method comprises the followingsteps: acquiring a first network parameter by analyzing an ARP cache table and extracting a current MAC address of a target gateway; the first network parameter comprises an IP address and a currentMAC address of a target gateway obtained by parsing an ARP cache table; acquiring a second network parameter and extracting a previous MAC address of the target gateway; the second network parameter is the stored IP address of the target gateway and the last MAC address; judging whether the current MAC address of the target gateway is the same as the previous MAC address of the target gateway; ifnot, ARP spoofing is determined to be present. The detection of ARP spoofing in the invention no longer relies on the operations requiring Root privilege such as grabbing packets or sending ARP request packets in the prior art, the ARP spoofing detection method in non-Root environment can be implemented based on the parsing of ARP cache table, which extends the application scenario of ARP spoofingdetection.

The invention discloses a removal method and an analysis method of impurities in a lubricating oil sample in mining device oil fluid monitoring spectral analysis. The removal method comprises the following steps: heating the lubricating oil sample through adopting a water removal device to evaporate water in the lubricating oil sample, and collecting the evaporated lubricating oil sample; adding the evaporated lubricating oil sample to a substrate in a nonmetal impurity removal device in a dropwise manner, and carrying out nonmetal impurity removal on the evaporated lubricating oil sample on the substrate to obtain a substrate adsorbed with metal particles; and cleaning the substrate adsorbed with the metal particles to obtain a metal particle-containing liquid sample used for spectral detection. The removal method and an analysis method of impurities in the lubricating oil sample in mining device oil fluid monitoring spectral analysis solves interference of impurity elements in the spectral analysis to a detection result, and also avoids interference of water in the lubricating oil sample to the spectral analysis result and process.

The invention discloses a novel rapid detection method of calorific values in coal samples. The method comprises the following steps: S1, collecting and preparing a plurality of coal samples, and determining the calorific value of each sample by a conventional method respectively; S2, scanning and collecting spectral data and curves of the coal samples by using an NIRS (near-infrared reflectance spectroscopy) analyzer; S3, performing treatment on the spectral data of the samples obtained in S2, obtaining a calibration equation of the calorific value by regression calculation, correcting and verifying the calibration equation of the calorific value, and establishing a detection model; and S4, directly filling a sample injector of an NIR (near-infrared reflectance) instrument with the coal samples to be detected sequentially, starting a scanning key, automatically recording and storing spectra of the samples by the NIR instrument, determining the spectral type to which the samples belong, selecting the corresponding detection model, and obtaining detection results. The accuracy of the detection method of the calorific value in coal established in the invention is in line with the requirement on reproducibility tolerance of a current standard method, the operation is very simple, convenient and rapid, and the scanning detection, including data output, of one sample can be completed by about 50s. In the whole detection operation process, sample weighing is not required, no chemical reagents need to be added, and the novel rapid detection method has the characteristics of high speed, convenience and no pollution.