3055results about How to "Undisturbed" patented technology

The invention relates to the technical field of cookware, in particular to a cooker provided with multiple temperature-sensing probes and a food cooking method. More than two temperature-sensing probes are arranged at different-height positions of a cooker wall, the lowest end temperature-sensing probe is arranged on the cooker wall close to the bottom of the cooker, thermal insulation materials are arranged the peripheries of the temperature-sensing probes, metal protective layers cover the outer sides of the thermal insulation materials, and the temperature-sensing probes are connected tightly, so that the interference of the outside temperature is prevented, and the sensing precision is improved; the temperature-sensing probe conductors are connected to a temperature displaying unit; through the temperature displaying unit, the temperature of the interior of the cooker is immediately known, the accurate heat control is carried out, and the scientific cooking is carried out. The invention further relates to a food cooking method by utilizing the intelligent cooker. The cooking method comprises the following steps of heating at an approximate boiling point; continuously heating till the cooker senses a set temperature t1 of temperature T1; after the temperature of the boiling point is closed, cooking on soft fire on time, so as to avoid the energy consumption waste.

The present invention discloses a physical three-dimensional model automatic modeling method which comprises the following steps of (1) collecting a turntable point cloud and a modeling object point cloud, and carrying out real-time registration to obtain a mixed point cloud of an object and a turntable, (2) carrying out point cloud pretreatment to obtain the surface point cloud of a model object with a bottom surface point, (3) carrying out surface reconstruction to obtain the three-dimensional surface model of the object, (4) carrying out model simplification treatment on the three-dimensional surface model, and establishing the three-dimensional simplified surface model of the object, (5) carrying out texture mapping on the three-dimensional simplified surface model, and (6) carrying out model rendering on the three-dimensional model which is subjected to texture mapping to generate a two-dimensional image. The method has the advantages that the system operation is stable and reliable, the automation is realized in the operation process, a rebuilding effect is good, and the application needs of different simulation scenes can be satisfied by a built multi-granularity three-dimensional model.

The invention discloses a network defense method based on a honey pot technology. Malicious flor is introduced into a Web application scene honey pot based on Docker via a proxy server, malicious attack of malicious flow is intercepted through the Web application scene honey pot; thus, in the scheme, through deployment of the Web application scene honey pot based on Docker, network attack can be defensed actively, attack to a real goal by an attacker is delayed, the precious attack tracing time is provided for a defender. The Web application scene honey pot based on Docker also can effectivelyovercome the defect of inadaptability to real scenes of a customer, storage space is effectively reduced through a virtual Docker technology, the network is isolated, interference of honey pots is guaranteed, and the stability of the honey pot is guaranteed through continuous integration. The invention also discloses a network defense system based on the honey pot technology. The system also canhave the technical effects.

The invention disclose a new positioning method of a distribution network single-phase earth fault, which is applicable to a 3-60 kV neutral point ineffective earth grid. The principle of the positioning method is that: firstly, a high-voltage DC signal is poured into a circuit starting end and the DC signal is detected along the circuit so as to determine a fault area; then a high-voltage AC signal is poured into the circuit starting end, and the AC signal is detected along the circuit so as to determine the position of a fault point. A positioning device developed on the basis of the invention consists of two parts: a high-voltage signal source and a signal detector, wherein, the high-voltage signal source consists of a voltage inverter, a constant flow source, a transformer and a rectifier bridge and is used for pouring a high-voltage DC signal and a high-voltage AC signal; the signal detector comprises a DC detector and an AC detector, wherein, the DC detector consists of a Hall DC detector, a Bluetooth wireless sender and a Bluetooth wireless receiver and is used for measuring the DC signal; while the AC detector consists of an AC electromagnetic field inductor and a signal processing and display segment and is used for measuring the AC signal. The method and the device have mature technique and high reliability.

A method of manufacturing three-dimensional objects by laser sintering is provided, the object is formed by solidifying powder material layer by layer at locations in each layer corresponding to the object by means of laser radiation, wherein an IR-radiation image in an applied powder layer is detected, characterized in that defects and / or geometrical irregularities in the applied powder layer are determined on the basis of the IR-radiation image.

The invention discloses a dynamic signal demodulation method for a fiber laser sensor. A sensing system is established, and comprises a beat frequency signal generation part and a signal demodulation part. The beat frequency signal generation part generates a beat frequency signal and receives a dynamic signal through a sensing probe; the original beat frequency signal is demodulated into a frequency modulation (FM) signal by the dynamic signal; the FM signal is input into the signal demodulation part and demodulated by an FM demodulator to form a modulation signal, namely, the dynamic signal; and the modulation signal is subject to analogue-digital (AD) conversion through an AD data acquisition card and then processed by a digital processing circuit to obtain the frequency and acceleration parameters of the dynamic signal. Through the invention, the dynamic signal demodulation method is free from influence of light-intensity variation, electromagnetic interference and the like; and compared with the known fiber dynamic demodulation method, the dynamic signal demodulation method is easy to implement and ensures stable and reliable operation and low cost.

The invention provides an optical fiber acceleration transducer probe and an optical fiber acceleration transducer system based on the phase generated carrier modulation technique. The system comprises a laser light source, optical fibers, a fiber coupler, the optical fiber acceleration transducer probe, a photoelectric detector and an electric demodulating system of phase generated carrier modulating signals, wherein the laser light source is a phase generated carrier modulated laser light source; the fiber coupler is respectively connected with the laser light source, the acceleration transducer probe and the photoelectric detector through the optical fibers; the photoelectric detector is connected with the electric demodulating system of the phase generated carrier modulating signals through wires or cables; and the optical fiber acceleration transducer probe comprises an acceleration detecting structure, at least one back plate, an acceleration transducer frame and at least one fiber sensor head. By adopting a double back plate structure and a fiber reading and detecting method, the system of the invention is improved and enhanced in the aspects of shock resistance and overload resistance performances, anti-electromagnetic interference, sensitivity and the like.

The invention discloses a robust lens distortion correction method. The invention provides a method for separating lens distortion from camera parameters to be solved separately. The method comprisesthe following steps of: performing a feature extraction from a checkerboard calibration object by firstly performing angular point detection utilizing a Shi-Tomasi operator, then performing screeningaccording to the specific characteristics of symmetry and large variance of the checkerboard angular point, and finally obtaining an sub-pixel coordinate with accurate checkerboard angular point by utilizing a sub-pixel optimization algorithm; establishing a camera imaging model and a lens distortion model to obtain an optimized objective function with respect to a distortion parameter; and solving the distortion parameter by utilizing a nonlinear optimization algorithm for distortion correction. According to the robust lens distortion correction method, a calculation of all main distortion parameters can be accomplished with only one calibration object image containing the checkerboard, the model is simple, the calculation efficiency and stability are high, the application adaptability isgood in an industrial field, and the calculation accuracy is comparable to a traditional method.

The invention discloses a method for manufacturing and using a wearable flexible skin electrode. By fusion of the method and a novel micro-nano machining technology, the wearable flexible skin electrode is fixed to the skin surface through an ultrathin, nontoxic and high-biocompatibility skin adhesive without conductive adhesives, and the electrode can be well fused with the skin of a human body and is capable of moving along with stretching of the skin, high in comfort and less prone to shedding. Since the electrode is in directly close connection with the skin, low impedance, high sensitivity and high stability are achieved, and interference of limb movement is avoided. The electrode has waterproof and sweatproof functions and is capable of monitoring electric signals of the human body in large-amplitude motion. A human body electric signal detection device manufactured with the skin electrode has the advantages of small size, light weight, convenience in wearing, availability for long-term use, low cost and benefit of popularization for long-term health monitoring and acquisition of health big data of people in wide range.

The invention relates to an intelligentized traffic isolation system. The structure of the system comprises a remote control center and a self-driven movable isolation fence with a central processor and a wireless communication module, the structure of the self-driven movable isolation fence also comprises a group of movable bases with wheels and wheel-driving mechanisms and a group of movable stakes, and the movable stakes are connected by means of connecting rods and arranged on the bases. The intelligentized traffic isolation system is characterized in that: the structure of the system also comprises an accurate positioning mechanism, the accurate positioning mechanism comprises a group of spikes with magnets as references, the spikes are arranged on a road traffic marking, a pair of Hall elements are symmetrically arranged on the left and the right ends in each base, and based on the structure, the intelligentized traffic isolation system can be accurately positioned after a roadway is adjusted according to need. An intelligent median strip for easy-to-jam intersections is provided, the isolation fence can be automatically adjusted and moved, and not only is the tidal functional adjustment of urban roads realized to solve the problem of urban road jams in rush hours, but also the heavy work of the road administration department can be reduced.

The invention discloses a distance-speed synchronous pull-off deception jamming recognition algorithm based on gradient projection, and belongs to the field of radar anti-jamming. According to a PD radar, the radar is generally jammed through distance-speed synchronous pull-off jamming, the deception jamming can conduct pull-off jamming on distance information and speed information at the same time, and thus the difficulty for accurately choosing and tracking a target of the PD radar is increased. The method comprises the following steps that (1) signals received by the radar are sampled, and a complete atom library is established according to the time-variant characteristic of a distance-speed synchronous jamming echo; (2) when the AGC voltages and the target number of a receiver are suddenly changed, it is judged that the target is jammed; (3) the Doppler frequency of the target is obtained through a gradient projection method, then the target speed is figured out, and accordingly anti-jamming is performed according to the target speed. The distance-speed synchronous pull-off deception jamming recognition algorithm based on gradient projection is high in jamming recognition capability, easy in engineering realization, high in engineering application value and large in popularization prospect.

The invention discloses a partition illumination energy-saving switch control system and a control method of the system. The system is composed of at least one camera, at least one human body inductive sensor, a microcontroller, at least one relay, a plurality of lamps and a computer, wherein the camera is connected with the microcontroller through a USB interface, and the human body inductive sensor and the relay are connected with the microcontroller through a GPIO port; a brightness calculation program module, an image preprocessing program module and an image processing program module are embedded in the microcontroller; the microcontroller is connected with the computer through a USB interface or a serial port; the computer comprises a system parameter setting program module. The method is based on an image processing technology, a partition illumination mechanism is introduced so that partition illumination can be achieved, and the lamps in the areas where people exist or do not exist can be automatically turned on or off along with movement of people. According to the control system and the control method of the system, due to partition illumination and human body following illumination, huge waste of electric energy can be effectively avoided, and intelligent illumination is achieved.

A method and device for real-time remote detection of multiple pollutant components (CO, CO2, HO, HC and smoke) in the tail gas of motor-driven vehicle features that the infrared tuned diode laser spectrum and the ultraviolet differential absorption spectrum are combined, and the differential absorption, narrow pulse scan and second harmonics of infrared tuned diode laser and the holographic raster spectrometer and array detector for ultraviolet differential absorption method are used. Its advantages are high sensitivity, high resolution and dynamic detection.

The invention relates to a loading and unloading system for a distribution center type automated container terminal. The loading and unloading system comprises a plurality of quay cranes, a nearshore multipath rectangular-ambulatory-plane automatic transportation system, an elevated container automatic loading and unloading system, a storage yard, a container evacuating port side multipath rectangular-ambulatory-plane automatic transportation system, a container evacuating port transportation system, an annular special container channel and a control system. Compared with the scheme of an existing automated container terminal, the loading and unloading system for the distribution center type automated container terminal is advantaged in that the loading and unloading system is creative and unique, and is high in production efficiency, safety, automation degree and stability, and is simple in structure, simple to control and complete in scheme.

The invention relates to an ultra-large capacity time division and wavelength division fiber grating sensing system and a query method of the fiber grating sensing system. The ultra-large capacity time division wavelength division fiber grating sensing system consists of a broadband light source, a modulation module, a circulator, a fiber Bragg grating sensing array, a sampling module, a wavelength demodulation instrument and a data processing computer, wherein the modulation module and the sampling module comprise a SOA high-speed photoelectric switch respectively and are driven by different channels of the same signal generator, and a phase difference exists between two drive pulses; and the fiber Bragg grating sensing array can be composed of identical fiber gratings or multi-wavelength fiber gratings. With the adoption of a technology combining a time division multiplexing with a wavelength division multiplexing, tens of thousands of gratings can be engraved on an optical fiber. The ultra-large capacity time division and wavelength division fiber grating sensing system has characteristics of large system capacity, high response speed, good expandability, high flexibility, good stability, low cost and the like, can perform dynamic measurement and static measurement at the same time, and can satisfactorily meet requirements of internet of things on information capacity.

The invention relates to a doped nano sensitive material for monitoring benzene, which is characterized in that: the doped nano sensitive material consists of Ag atom-doped TiO2, Fe2O3 and Al2O3 powder, wherein the content ranges of the components are that: the content range of Ag is 10 to 12 percent, the content range of TiO2 is 30 to 40 percent, the content range of Fe2O3 is 25 to 35 percent, and the content range of Al2O3 is 15 to 25 percent; and the grain diameter is less than 30nm. Benzene sensors prepared from the sensitive material provided by the invention have wide linear range, goodselectivity and high sensitivity, can monitor micro benzene in the air on line, and are not influenced by coexisting substances.

The invention discloses a probe compound for identifying fluorine ions by combining spectral detection and bare eyes. The compound is a new compound formed by using excited state proton transfer compounds as a matrix and by silylation. The compound can be used for detecting fluorine ions, in particularly detecting fluorine ions in a water environment. Infiltrated test paper prepared by the compound is quick and convenient, the detection limit is low, and according to different excited wavelengths, two modes, namely an intensity identification mode and a chromaticity identification mode, can be selected respectively for better detection by an instrument and bare eyes.

The method divides transmissive data into two classes: one class as control signaling data, and the other class as file data. Two encryption channels: one channel for transmitting encrypted signaling, the other channel for transmitting encrypted data are built between clients and server. Two encrypted channels adopt different encryption manners and transmission modes. The control signaling data are transmitted by encrypted signaling transmission channel (ESTC), and the file data are transmitted by encrypted data transmission channel (EDTC). ESTC and EDTC are mutual independence, and not disturbed each other to accomplish transmitting data of network management system jointly and symbiotically. Using different encryption methods and transmission modes, the dual encrypted channels are in favor of system safety. Independent, encrypted high performance EDTC raises efficiency for transmitting data. Two separate encrypted channels realize accesses for devices simultaneously.

The invention relates to a coordinated monitoring method for preventing BGP (Border Gateway Protocol) routing hijacking (including prefix hijacking and next hop hijacking). The technical scheme is that an AS (Application Server) participating the coordination utilizes an original or newly-set server to run the BGP, sets a BGP session for acquiring routing updating messages together with one or more internal routers, and simultaneously sets a coordinated monitoring session together with monitoring servers in a plurality of other ASs, and the coordinated monitoring method particularly consists of a routing updating monitoring method and a session state monitoring method. On a control plane, the routing updating messages acquired by the session are analyzed and monitored, and the BGP prefix hijacking and the next hop hijacking are detected; and on a data plane, the coordinated monitoring session states are maintained and detected to discover routing hijacking events of a coordinating network per se in real time. The present network management and measurement facilities in the AS, as well as data acquisition facilities set by a public routing data dissemination project, and are fully utilized to build the coordinating network for monitoring the BGP prefix hijacking and the next hop hijacking through coordination and integration of conventional network resources.

The invention provides a magnetic mesoporous silica gel material extracting agent used for enriching and / or separating trace organic pollutants in an environment water sample, and a preparation method thereof. A core of the extracting agent provided by the invention is a silicon gel microsphere (i.e. magnetic silicon gel microsphere) wrapped with a plurality of Fe3O4 magnetic nano particles, and a shell of the extracting agent is a mesoporous silicon gel shell layer with inner and outer surfaces modified by C18 silanization. The extracting agent integrates huge special surface area, excellent extracting capacity and ultrahigh extracting volume of a mesoporous material, magnetic separating capacity of a magnetic material, strong extracting capacity of C18 groups and special volume exclusion function of a vertical channel of the mesoporous material. In addition, the extracting agent provided by the invention has the advantages of high extracting efficiency, low preparation cost and simple preparation method, and is very suitable for preprocessing samples of the trace organic pollutants in a bulk-mass water sample.

The invention belongs to the field of sewage treatment and relates to a biological treatment method for high-concentration wastewater with high ammonia nitrogen content, in particular to a biological tannery wastewater treatment system and a treatment method thereof. The biological tannery wastewater treatment system comprises a first-stage gridding aeration tank, a horizontal flow sedimentation tank, a second-stage gridding aeration tank and a radial flow sedimentation tank which are communicated sequentially, wherein the bottom of the horizontal flow sedimentation tank is communicated with a material inlet of the first-stage gridding aeration tank through a backflow pump; and the bottom of the radial flow sedimentation tank is communicated with a material inlet of the second-stage gridding aeration tank through the backflow pump. According to the treatment method, the organic degrading proportion and the denitration function of the system are enhanced by two-stage aeration. The treatment system and the treatment method which are disclosed by the invention has the advantages that the treatment effect is obvious, running maintenance is facilitated, the energy consumption is low, and the treatment cost is low; and obvious economical and beneficial benefits are realized.

The invention provides a method and a device for searching a cell in homogeneous-frequency neighboring cells. The method comprises the following steps of: performing primary synchronization signal (PSS) detection and secondary synchronization signal (SSS) detection on total receipt signals, eliminating signals corresponding to a cell to be eliminated in the total receipt signals according to PSS detection and SSS detection results, acquiring the total receipt signals subjected to interference elimination, then performing PSS detection on the total receipt signals and performing SSS detection on the total receipt signals subjected to interference elimination, or performing PSS detection and SSS detection on the receipt signals subjected to interference elimination. By adopting the method and the device for searching the cell in the homogeneous-frequency neighboring cells, the search accuracy of the homogeneous-frequency neighboring cells can be improved.

The invention provides a transformer excitation inrush current and fault differential current recognition method based on a Hausdorff distance algorithm. The transformer excitation inrush current and fault differential current recognition method comprises the steps of: acquiring secondary currents of current transformers at two differential protection sides of a transformer on each cyclic wave N point, and form a differential current signal sequence I; judging whether a value of the differential current signal sequence I exceeds a setting valve of a differential protection starting component, and starting a criterion disclosed by the invention for distinguishing a fault differential current and an excitation inrush current if the value exceeds the setting value differential protection starting component; judging and acquiring an extreme value of the differential current signal sequence I by adopting a 1 / 4 cyclic wave data window, regarding a differential sequence A after per-unit treatment as an edge feature point of a Hausdorff distance algorithm object graph, regarding a standard sine sequence B with amplitude being 1 as an edge feature point of a Hausdorff distance algorithm template graph, comparing an Hi value with a set Hausdorff distance threshold value Hset, and conducting protection action if the Hi value is less than the threshold value; and blocking protection if the Hi value is greater than the threshold value. The transformer excitation inrush current and fault differential current recognition method is used for directly judging difference of waveform pattern overall features of inrush currents including symmetric inrush currents, and ensures correct action of transformer differential protection.

The invention relates to a quantitative measuring method of a lithium ion battery electrolyte solvent, which relates to a quantitative measuring method of a battery electrolyte solvent, and solves the problems of the existing lithium ion battery electrolyte solvent and the additive quantitative analysis method that the requirement on detection equipment is high, the price is high, the detection process is complicated, the quantitative detection accuracy is low and the detection is easily subjected to the interference of impurities. The measuring method comprises the following steps: I, preparing an inner standard solution identical in internal standard substance concentration; II, drawing an internal standard working curve; III, preparing a detection solution; and IV, calculating the concentration of a component in the detection solution according to a specific value Y of the chromatographic peak area to the internal standard substance chromatographic peak area. The method is suitable for detecting a great number of analysis samples and has advantages of high detection speed, little time, high efficiency and the like.

The invention discloses an automatic shoelace threading machine, which comprises a working space consisting of at least two guide rails, a positioning device for positioning shoes, a workbench for clamping the shoes and at least two mechanical hands for threading shoelaces, wherein the positioning device and the mechanical hands are arranged in the working space; the workbench is arranged on the guide rails of the working space, and comprises a fixed clamping plate, movable clamping plates, a shoe tongue clamping plate, a clamping and positioning driving device for driving the movable clamping plates to move, and a shoe tongue clamping plate driving device for driving the shoe tongue clamping plate to move; the movable clamping plates are arranged on the left and right sides of the fixed clamping plate; and the shoe tongue clamping plate is arranged in a groove of the fixed clamping plate. A threading method of the automatic shoelace threading machine is also disclosed. The technical scheme has the beneficial effects that the shoelaces are automatically threaded, so that the shoelace threading speed is effectively increased, the production efficiency of the shoes is improved, and the degree of tightness of shoelace threading is effectively ensured.

The invention discloses an integral type thermal insulation building, which belongs to the technical field of building engineering. The problem to be solved is to provide the integral type thermal insulation building. The adopted scheme is that the integral type thermal insulation building at least uses one of an inorganic thermal insulation structure layer and an inorganic thermal insulation layer, wherein the inorganic thermal insulation structure layer is formed by combining one or two of inorganic thermal insulation load-bearing concrete and inorganic thermal insulation load-bearing building blocks; and the inorganic thermal insulation load-bearing concrete comprises the following components in a mixing weight ratio (kg / m<3>) of concrete composite light bone admixture to cement to sandto stone to porcelain granule to fly ash to water to concrete admixture of (6-225):(200-800):(300-700):(500-1,600):(150-650):(10-600):(80-400):(0.1-200). The integral type thermal insulation buildingcan be widely applied to the technical field of buildings.

The invention relates to a cataluminescence sensitive material for formaldehyde, benzene and ammonia in air. The cataluminescence sensitive material is characterized by consisting of WO3, Bi2O3, ZrO2 and SnO2 loaded by grapheme in composite. The preparation method for the cataluminescence sensitive material comprises the steps as follows: firstly, natural graphite is used for preparing oxidized grapheme; secondly, the oxidized grapheme is added into a hydrochloric acid solution of tungsten salt, bismuth salt, zirconium salt and stannum salt so as to be subjected to ultrasonic vibration until the solution is clarified; fourthly, hydrazine hydrate water solution is put in additionally, and ammonia water is put in by drops until the pH value of the solution reaches 6.5-7.2; fifthly, after the solution is subjected to aging, filtering, drying, grinding and burning, the composite sensitive material consisting of the WO3, Bi2O3, ZrO2 and SnO2 loaded by the grapheme is obtained through natural cooling. Through utilizing a gas sensor made from the composite sensitive material provided by the invention, trace amount of formaldehyde, benzene and ammonia in air is detected quickly and accurately without the interference of other common coexisting materials.

The invention relates to an ultra-hydrophilic-superoleophobic reduced graphene oxide filtering membrane and use, and belongs to the technical field of separation membrane preparation. First, grapheneoxide and nano-zinc oxide are added to distilled water and ultrasonically dispersed; a dopamine solution containing dopamine hydrochloride is added and mechanically stirred; the mixed solution is thensuction-filtered and deposited onto the surface of a mixed cellulose ester membrane by vacuum suction filtration, and the ultra-hydrophilic-underwater superoleophobic unsupported reduced graphene oxide filtering membrane is obtained by drying and self falling. The reduced graphene oxide membrane has the advantages of high water permeation selectivity, flux and stability, and membrane pollution resistance, can effectively separate oily wastewater, provides an efficient, environmentally friendly and economic technical means, and has important practical significance.

The invention discloses a method for counting vehicle axles based on steel-rail deformation or stress parameters. The method comprises the steps as follows: a sensor test point is firstly disposed on a steel rail, the sensor test point is provided with a sensor used for inducing the steel-rail deformation or the stress, and the sensor test point sets the threshold value of the sensor; when a wheel runs over the steel-rail where the sensor is arranged, the sensor records the occurrence of the status if the steel-rail deformation or the stress excesses the threshold value; and the number of the vehicle axles is determined according to the status messages. The solution of counting the vehicle axles provided by the invention is achieved by utilizing the sensor such as a fiber grating or an electrical strain foil, and the method preferentially selects an indirect measuring mode. Therefore, the method can technically avoid the problems existing in the traditional system for counting the vehicle axles, and the method has high stability and strong anti-interference ability.

The invention discloses an IOV (Internet of Vehicles) communication system based on ZigBee. The system includes a vehicle-mounted terminal subsystem, a traffic flow prediction subsystem, a motion trajectory simulation subsystem, a traffic signal real-time control subsystem, a traffic information release subsystem, a traffic violation monitoring subsystem, a database subsystem, and a cloud computing processing platform. The data collected by ach subsystem is transmitted to a server in the cloud computing processing platform, and each vehicle carries one vehicle-mounted terminal subsystem. The system directly transmits a signal to the vehicle-mounted terminal by short-range wireless communication, so the system has high accuracy, is free from environmental interference, and has good real-time performance. The traffic flow prediction subsystem predicts the future traffic flow. The motion trajectory simulation subsystem simulates the vehicle's motion trajectory in real time. By adding thecommunication module between the roadside devices, the cost of the vehicle terminal is reduced, and the whole process quick interaction is achieved. The system gives full play to the advantages of lowpower and high reliability wireless communication of a ZigBee module in roadside devices.