140results about How to "Implement data storage" patented technology

The invention relates to a device and method for vibration measurement and failure analysis of a rolling bearing. The device comprises a detected bearing mounting device, a speed sensor, a signal conditioning circuit, a data collection device and a computer, wherein a detected bearing is mounted on a mandrel of the detected bearing mounting device; a vibration rod of the speed sensor is arranged on a middle plane of an outer cylindrical surface of an outer ring of the detected bearing with prescribed pressure, the measurement direction is along the radial direction of the bearing and vertical to the axis of the bearing, and the signal conditioning circuit and the data collection device are connected to the computer; the speed sensor measures radial vibration speed signals of the outer ring of the bearing, the picked bearing radial vibration speed signals are converted into corresponding electric signals which are processed by the signal conditioning circuit and then transferred to the data collection device which carries out A / D conversion of the conditioned signals to convert the conditioned signals into digital signals capable of being processed by the computer, and finally the computer carries out analysis and processing of the digital signal. The device and the method are applicable to production test and user acceptance of finished bearings by laboratories and bearing manufacture factories.

An internet-of-things control system based on mixed cloud comprises a public cloud system and a plurality of private cloud systems. The public cloud system is connected with the private cloud systemsto form a mixed cloud system, and the public cloud system is used for controlling the communication interaction of the private cloud systems and provides distributed storage and distributed computingcontrol for all nodes formed by all the private cloud systems; the private cloud systems provide network access control for user clients and various internet-of-things terminals and control local resources and meanwhile share a part of storage resources of local storage units and local hardware operation resources. The information isolated island problem of resources in user homes in the current internet-of-things system is solved, the problem that the user family object resources are independent and do not form a unified control coordination system, so that the existing internet-of-things system needs to construct huge system resources at the public end, and the system becomes huge, redundant and high in cost are solved, and the problem that the privacy of a user cannot be protected in ahigh-safety degree is solved.

The present invention provides processing approach of dynamic Chinese character font library containing write order information. The processing approach includes processing static Chinese character image to extract the strokes and extract the contour and skeleton of each stroke in the write order; tracing the time sequence information of stroke skeleton and time sequence information of the stroke contour in preset policy; and performing sectional curve fitting and time sequence information fitting to convert the input static Chinese character information into dynamic Chinese character data. The present invention may be applied for dynamic display of Chinese characters in various styles and simulating dynamic Chinese character writing process. The present invention has also static zooming and dynamic restoring function of Chinese characters, and is suitable for various fields where dynamic Chinese character display is needed.

The embodiment of the invention provides a data storage method and device for private data, and a data reading method and device for private data. In the private data storage stage, a trusted execution environment TEE unit uses the determined key information to encrypt private data and stores the private data to a data storage platform; in the decryption key registration stage, the TEE unit uses the public key of the data management party to encrypt the decryption key of the private data and stores the decryption key to the data management party, and the data management party manages the decryption key; in the decryption key acquisition stage, the data viewer acquires a decryption key encrypted by adopting a public key of the data manager from the data manager, and decrypts the decryptionkey by adopting a corresponding private key to obtain a decryption key; and in the private data acquisition stage, the data viewer acquires the encrypted data from the data storage platform, and decrypts the encrypted data by using the obtained decryption key to obtain the private data.

An integrated digital home control system based on hybrid cloud and heterogeneous Internet of Things includes a public cloud system, multiple private cloud systems, one or more user clients and a plurality of Internet of Things terminals. The public cloud system is connected with the plurality of private cloud systems to form a hybrid cloud system, wherein, the private cloud systems are controlledby an internal server; the internal server comprises a wireless controller for controlling the configuration and operation of a plurality of wireless access points AP, and the wireless controller isconnected with the plurality of APs; and each AP is a device with a radio frequency interface supporting a plurality of transmission protocols, and each AP is connected to the plurality of Internet ofThings terminals for controlling the access of the plurality of Internet of Things terminals to a wireless network. The invention solves the problems that the current control scheme of the Internet of Things based on the hybrid cloud is single in design and can not be interconnected, and the current scheme has complex user terminal settings, too dependent on cloud services, and at the same time has a wide variety of communication protocols and can not be managed uniformly.

The invention discloses a portable wireless storage system with a portable power source function. The portable wireless storage system comprises a WIFI (Wireless Fidelity) signal RF (Radio Frequency) processing unit, a multimedia processing unit, a storage management unit and a power source management unit, wherein the WIFI signal RF processing unit is used for realizing data file sending or receiving; the multimedia processing unit is used for realizing the processing of a data file; the storage management unit is used for expanding a data processing capability of the multimedia processing unit and converting data in a storage medium into a USB (Universal Serial Bus) signal, and is communicated with the multimedia processing unit by a USB bus to realize a wireless storage function; the power source management unit is used for supplying power to the whole system, controlling the power supply of each unit of the system and managing a charging / discharging process of a battery in real time. According to the data storage disclosed by the invention, except build-in storage of a product, the storage of a Micro SD (Secure Digital) card and USB storage equipment can be expanded by a Micro SD interface and a USB interface. Furthermore, the USB interface is conveniently and externally connected with USB functional peripheral equipment to realize a video monitoring function, a temperature testing function and the like. According to the portable wireless storage system, system equipment supporting a WIFI function, such as existing IOS (Iphone Operating System), ANDROID and the like in hands, can be matched to realize data storage and sharing functions.

The invention relates to a plastic inspection well comprehensive test detector and belongs to the field of product performance detection and test. The detector comprises a frame, a workbench I, an axial-radial loading hydraulic cylinder, a pressing plate, a guide rail I, a slide block, a shearing loading hydraulic cylinder, a pressing head connection support, a saddle-shaped pressing head, a horizontal mobile hydraulic cylinder, a hinging support, a stop block, a heavy punch, a guide rail II, a steel wire rope, a beam, an electromagnet, a lifting hydraulic cylinder, a water tank, a pressing block, a water pump, a motor, a two-position three way magnetic exchange valve and a pressure regulating and limiting valve. The detector can detect axial load, radial load, bellmouth shearing load, airtightness and weld strength of a plastic inspection well, lateral ring flexibility, rigidity and shock resistance, and pedal bearing performances, has a wide application range, realizes automatic control, automatic test, automatic recording and data storage, has the advantages of reliable operation and high test efficiency, realizes dead load test detection, has a simple structure and multiple functions and can be popularized easily.

The invention discloses orthogonal light path-based equipment for online monitoring the concentration of organic carbon / elemental carbon in PM (Particulate Matter) 2.5. The orthogonal light path-based equipment comprises an on-line sampling unit, a sample processing and detecting unit and an orthogonal light path system, and is characterized in that the sampling unit comprises a vacuum pump, a mass flow controller, a quartz filtering membrane, a ball valve, a volatilizable organic matter denuder, and a PM2.5 cutting head; the sample processing and detecting unit comprises a digestion furnace, an oxidation furnace, a gas path control network, a carrier gas source and a non-deviation infrared detector; the orthogonal light path system comprises a laser, a light beam splitter, a reference light path photoelectric detection unit, a quartz filtering membrane transmission light path photoelectric detection unit and a reflection light path photoelectric detection unit; and three gases of high-purity He, 5 percent O2 / He and 5 percent CH4 / He are required to be controlled by a gas path valve network by a singlechip. The orthogonal light path-based equipment is capable of simultaneously detecting light intensity values of incident laser, sampled reflected light and transmitted light of the quartz filtering membrane, and relatively accurately achieving the segmentation of the organic carbon and the elemental carbon.

The invention provides an online intelligent tobacco curing system based on a cloud platform and a curing process. The online intelligent tobacco curing system based on the cloud platform comprises a tobacco curing system server, a terminal application system and no less than one intelligent tobacco curing barn, wherein the three parts are connected by virtue of an internet; the tobacco curing system server is capable of receiving real-time data information of the plurality of intelligent tobacco curing barn, and the tobacco curing system server, by shooting images tobacco leaves and monitoring the tobacco leaves and by conducting computation and analysis with the application of big data of a tobacco curing stem server cloud platform, can achieve online intelligent control; and the terminal application system (such as PC, iPad and mobile phone) can log in a web page or mobile phone APP to search the status and historical data of the tobacco curing barn; the curing process comprises five sections in seven steps, namely weaving tobacco leaves and pre-withering the tobacco leaves, a yellowing stage, a leaf-drying stage, a stem-drying stage and a dried tobacco leaf moisture regaining stage, and a temperature stabilizing stage from the second step to the seventh step is subjected to the intelligent control of the tobacco curing system server cloud platform. The online intelligent tobacco curing system provided by the invention has the characteristics of being precise in temperature control, energy-saving and emission-reduction, environment-friendly, low in cost, short in curing cycle and intelligent and capable of achieving big data management, and the online intelligent tobacco curing system is conducive to the development of professional curing.

The invention discloses a railway signal data flow storage management system. The system can be used to maintain an original text Log function and comprehensively record a data flow of a railway signal system and especially a TDCS / CTC system. When the system is used to record data, through using cache storage and compression storage modes, a data size is greatly reduced and then usage of a systemhard disk resource and a network resource is greatly decreased. Automatic dynamic switching can be performed so that data storage under two modes of local storage and remote storage is realized. Simultaneously, incremental sequence numbers are arranged for each packet of the data, only sequence number management of data storage is realized and abnormal missing during data recording is prevented. Besides, rapid positioning can be performed when the system is used to analyze an on-site fault, and according to historical data of a production environment, a basis is provided for automation testing.

The invention discloses a six-degree-of-freedom upper limb rehabilitation robot control system which comprises control system software, an industrial control computer, a man-machine interaction deviceand a bus control module, wherein the man-machine interaction device and the bus control module are connected with the industrial control computer. The control system software runs in the industrialcontrol computer in a carried manner, the bus control module is connected with a PWM (pulse width modulation) module, an analog module and a digital module through an internal bus and connected with a5-path servo driver through an Ethernet cable, the 5-path servo driver is connected with a 5-path direct-current servo motor through a cable, an absolute value encoder on the 5-path direct-current servo motor is connected with the 5-path servo driver through a cable, one path of the PWM module is connected to a steering engine through a cable, the analog module is connected to a potentiometer atthe tail end of the steering engine and connected with a six-axis force sensor, and the digital module is connected with an emergency stop switch and a limit switch.

The invention discloses an upper computer real-time monitoring and managing system of a lithium battery forming and capacity grading device. The upper computer real-time monitoring and managing system comprises an online managing module, an online monitoring module, a channel starting module, a data query module, a capacity grading module, a work log module, a power down protection module and an option setting module. Serial communication is adopted in the upper computer real-time monitoring and managing system, sample data of a lower computer are received in a multithreading mode in real time, the real-time current capacity value, the real-time voltage capacity and the real-time battery charge state are displayed, the data are stored, a current curve, a voltage curve and a capacity curve of batteries and a display data list are drawn, the graphs are printed, automatic charging and discharging control over all the batteries are carried out according to the set working procedure, capacity grading is carried out on the test results, and the upper computer real-time monitoring and managing system has the auxiliary functions of power down protection data continuing, online managing, option setting, work logs and the like.

The invention relates to a control system and method of the digital control machine which is characterized in that it uses the contact screen to displace the CNC, wherein the contact screen comprises a data input module, a data storage module and a data processing compute module; it uses the communicating interface to communicate with the PLC to achieve the coordinate axis location control with the locating accuracy 0.002mm; the contact screen also comprises a switch module, a choosing module, a monitoring module and a data following display module.

The invention discloses a heavy numerical control machine tool thermal error compensation control system based on CPS (Cyber-Physical Systems) and a thermal error compensation method. The thermal error compensation control system comprises an embedded acquiring card, an operation controller and a numerical control connector, wherein the embedded acquiring card is used for acquiring the temperatureinformation of measuring points of a machine tool and the displacement thermal errors of a main shaft tool tip of the machine tool and sending data to the operation controller after preprocessing; the operation controller is used for substituting the received temperature data into a prediction mathematical model to calculate thermal error prediction values, processing the thermal error predictionvalues into real-time compensation values according to formulated compensation strategies and uploading the thermal error prediction values and the real-time compensation values to a cloud server through a wireless network, wherein the prediction mathematical model and the compensation strategies are remotely updated through the wireless network; and the numerical control connector is used for inputting the received real-time compensation values to a machine tool numerical control system through a NCUC bus, and the machine tool numerical control system reads the real-time compensation valuesin operation and processing of G codes, and controls of the machine tool to move in the X axis, the Y axis and the Z axis.

The invention discloses a data storage method, device and equipment for a kubernetes cluster and a storage medium. According to the invention, the virtual router can realize communication between thevirtual machine of the tenant network and the control node; a csi-cinder plug-in is installed on a kubernetes cluster of a virtual machine; after the storage system is subjected to unified managementthrough the cinder service, the kubernetes cluster can directly access the cinder service of the control node through the csi-cinder plug-in by using the communication mode, so that the persistent data storage of the kubernetes cluster is realized.

A full-automatic leak hunting machine for gloves belongs to the field of production equipment of PVC, butyronitrile and latex gloves, and concretely relates to automatically-controllable full-automatic glove leak-hunting equipment. The full-automatic leak hunting machine for gloves is characterized in that a glove leak hunting mechanism comprises a glove inflation joint, the glove inflation joint is inside provided with an inflation detection pipe connected with a gas pipeline, the gas pipeline is connected with a gas leak detector; and the glove leak hunting mechanism is connected with a leak-hunting mobile mechanism which is capable of driving the glove inflation joint to make reciprocated motions between an upper limit position and a lower limit position through translation and / or swing, and the lower limit position of the glove inflation joint is between an upper sucker group and a lower sucker group. The glove full-automatic leak hunting machine employing a gas as a detection carrier is provided for realizing automatic leak hunting after a glove is picked from a production line, is capable of timely feeding detection data back and does not influence subsequent usage of the glove because of a detection medium.

The invention provides a measurement, control and data transmission integrated system for micro-nano satellites, which comprises a measurement, control and data transmission integrated module, a processor module and a load module, and is characterized in that the processor module sends satellite telemetry data to the measurement, control and data transmission integrated module and receives telemetry quantity acquisition data of the measurement, control and data transmission integrated module; the load module receives the upper injection data of the measurement, control and data transmission integrated module and returns load data to the measurement, control and data transmission integrated module; the measurement, control and data transmission integrated module comprises a to-the-sky transceiver module and a to-the-ground transceiver module. The independent design of multiple single machines of a traditional satellite measurement and control and data transmission subsystem is replaced,the functions of measurement and control, data transmission, storage and the like are integrated, the functions of measurement and control and data transmission are achieved at the same time throughthe same channel, miniaturization, integration and simplification design of microsatellites is facilitated, the application efficiency of a ground measurement and control network is improved. The method is a future satellite-ground communication development trend.

The present invention provided an MPP architecture based distributed relational database and relates to the fields of databases, big data and distributed computing. The database comprises four modules: a global transaction manager in charge of global transaction processing; a load balancing system in charge of load balancing management of a cluster; a cluster coordination manager used for coordinating work among data nodes; and the data nodes of a relational database based on PowerDB deployment. According to the MPP architecture based distributed relational database provided by the present invention, aimed at the PowerDB relational database, a distributed environmental cluster is established; by adopting an MPP architecture technology and Shared Nothing among the nodes, no influence on cluster work is ensured when a single point has a fault; and the cluster can extend laterally, PB level data storage is implemented, and massive parallel data writing is supported.

The invention discloses a server multi-center real-time hot standby switching device of an automatic train monitoring system and improves the reliability of a central server. According to the technical scheme, the server multi-center real-time hot standby switching device comprises at least one central server, and the central server is used for achieving the function of automatic train monitoring system; and at least one server data cluster component, the server data cluster components are deployed in the central servers correspondingly, the server data cluster components establish communication for forming a server data cluster, the server data cluster comprises a main server data cluster component and at least one standby server data cluster component, the central server communicates with the main server data cluster component, data are stored and obtained through the main server data cluster component, wherein all the components in the server data cluster are held a copy of the data and keep the data copy be synchronized, and when the main server data cluster component goes wrong, one of the standby server data cluster components is upgraded and serves as the novel main server data cluster component.

The invention discloses an account clearing method and device, terminal equipment and a storage medium. The method comprises the following steps: acquiring user account information from an account database; setting an account level of the user account information according to identity information and an authentication state; determining problem accounts from the user account information accordingto a preset judgment condition according to the account level, the telephone number and the identity information; and computing the activity degree of each problem account according to the login frequency of the problem account in the preset time slot; screening out a to-be-cleared account from the problem accounts according to the preset screening condition based on the identity information, thetelephone number, the activity degree, the product purchasing record, and the account level; and removing the to-be-cleared account from the account database. Through the technical scheme disclosed bythe invention, the to-be-cleared account can be timely and automatically removed in the premise of not influencing the use of the user, and the occupancy on the storage space of the database is reduced at the same time, and the system performance is improved.

The invention relates to an image information processing method and a device and an image displaying method and a device. The processing method comprises the steps of acquiring header file information of a scan file, obtaining image information of a scintigram with a corresponding multiplying power group, and compressing the image information of the scintigram and writing the compressed image information of the scintigram and the header file information into the image file. The processing device correspondingly comprises an acquiring unit, an obtaining unit, a compressing unit and a writing unit. The displaying method comprises the steps of selecting multiplying power corresponding to displaying multiplying power of the scintigram according to the displaying multiplying power of the scintigram; and reading compressed image information, corresponding to the multiplying power, of the scintigram, and decompressing and displaying. The displaying device correspondingly comprises a selecting unit, an image information reading unit, a decompressing unit and a displaying unit. According to the image information processing method and the device and the image displaying method and the device, all data produced in the scan file can be stored in one image file, and therefore file management efficiency and data calling efficiency are further improved.

The invention discloses a molecular ferroelectric film and a method of solution soaking growth thereof. The film is a crystal film, has ferroelectricity, and is composed of organic-inorganic compound molecular ferroelectrics. A molecular ferroelectric solution contacts with a clean substrate, and uniformly spreads and evaporates on the substrate to obtain a uniform film; the prepared uniform film is allowed to contacts with the molecular ferroelectric solution with a mass concentration being not less than 90% of its saturation concentration for a certain period. The meaning of the present invention is that the molecular ferroelectric film prepared by a solution soaking growth method has good ferroelectricity, can realize reversal of the polarization direction of any specific area by using an external electric field, and thus realize ferroelectric effect-based data storage. The molecular ferroelectric film of the invention has potential application value in the ferroelectric memory field.

The invention discloses a method and a system for monitoring coal consumption and carbon emission of a power plant. Coal powder preparation data, desulfurization system data, auxiliary network system data, electric energy data, DCS data, ECS system data, platform balance data, financial data and the like in the power plant are acquired and gathered for being transmitted to a data acquisition server. After preliminary processing, the data are transmitted to an enterprise central server in which a four-in-one Simcoin support platform which is manufactured by an Aftechnology enterprise is installed. Real-time processing for mass data can be realized. According to real-time soft measurement calculation, real-time data of coal consumption and carbon emission of the power plant are obtained. Through a WEB application server, issuing and displaying to outside in manners including a wireless manner are realized. The method and the system have advantages of performing real-time monitoring on the coal consumption and carbon emission of the power plant, ensuring safe high-efficiency energy-saving and low-emission operation of the production equipment, and realizing basic metering for carbon transactions.

The invention relates to a novel oil field produced water online monitoring system, which comprises online monitoring equipment with a non-explosionproof structure, wherein the monitoring equipment with the non-explosionproof structure is integrated highly to be arranged in a positive pressure explosionproof analytical cabin. In the online monitoring system, a sampling and pretreatment unit adopts three sampling points which are at an outlet of a setting tank, an outlet of a purification tank and an outlet of a clear water tank respectively; a water path switching and pneumatic control unit is realized by the programmable logic controller (PLC) programming control technology and the electromagnetic and pneumatic technology; data monitored by a monitoring analytical and data processing unit is collected by a PLC control cabinet and is connected with a station control upper computer, a station control server, a factory level information center and a digitalized command system platform of an oil field company sequentially by a recommendation standard 485 (RS485) bus signal; automation control is realized by the PLC programming technology; the self-cleaning and maintenance-free of a pipeline and measuring unit are realized by a double action mode of 'air purge and hydraulic pressure cleaning', so that water quality can be monitored continuously in real time and the running state of deoiling equipment or a filtering system can be monitored. The novel oil field produced water online monitoring system has the advantages that: the automaticity is high; the labor intensity of workers is relieved; the remote transmission of data is realized; and the like.

The invention provides a data transmission device for a distribution transformer metering tank. The data transmission device for the distribution transformer metering tank comprises a distribution transformer metering tank body, sensing equipment, an action execution mechanism and a background monitoring system, and is characterized by further comprising a distribution transformer data forwarder realizing data storage and data processing; and the input end of the distribution transformer data forwarder is connected with the second output end of the sensing equipment, and the output end of thedistribution transformer data forwarder is connected with the input end of a communication server through a wireless network. Compared with the prior art, the distribution transformer data forwarder is added in the distribution transformer metering tank, bulk capacity storage is introduced, the data storage, processing and forwarding functions are realized and the data storage capability is enhanced; moreover, the data transmission device is seamlessly connected with the front-end sensing equipment, a communication link and a background monitoring center so as to guarantee that electric powerdata can be reliably transmitted to the background, thereby greatly enhancing the practicability of the system.

The invention discloses a movable radioactive waste sorting device and a using method thereof. The device comprises a mounting platform mounted at the top of a low shielding wall; railways are arranged on the mounting platform in the length direction; a trolley which can slide along the railways is arranged on the railways; two manipulators are mounted on the trolley side by side; clamp forceps ofthe manipulators are located in a radioactive waste storage area located inside the low shielding wall; and a dosage measurement instrument and a video system are further mounted on an inside wall surface of the low shielding wall. According to the sorting device disclosed by the invention, the mounting platform is connected to supporting vertical posts by bolts; when other radioactive waste storage areas need sorting, the platform can be detached quickly; the overall sorting device is moved to the low shielding wall of the radioactive waste storage area for performing sorting work; and a detachable structure is high in flexibility, wide in applicability, and convenient to mount and detach, and facilitates transportation and adjustment.

The invention relates to an external extended DDR2 (Double Data Rate 2) read-write method on the basis of a FPGA (Field Programmable Gate Array) and an external extended DDR2 particle storage on the basis of the FPGA, and belongs to the field of storage media. The invention aims to solve the problem that an existing DDR2 data storage technology does not have the universality. According to the invention, massive data generated in the high-speed data acquisition, the high-speed communication and the digital signal processing is stored in a large-capacity DDR2 storage unit through processing and conversion by the FPGA and is read when a request is made; storage and read control signals are completed by a DDR2 control logic in the FPGA; when external devices or other logic modules in the FPGA make a read-write request, the DDR2 control logic converts request signals into control signals of DDR2 particles and carries out corresponding conversion on read-write data and addresses to exchange data with the DDR2; and a core part of the hardware design is the logic design inside the FPGA and the part is implemented by adopting a Verilog language.

The invention discloses a cloud customer service platform based on cloud computing and a network video conference. The cloud customer service platform is composed of a client terminal, an enterprise customer service terminal, an enterprise manager terminal, a platform manager terminal, a network video conference system, a cloud customer service system and a distributed cloud platform. The cloud customer service platform settles problems of high construction cost and high operation cost in an existing customer service system and settles a problem of single customer service mode in a customer service system. The cloud customer service platform supplies the cloud customer service based on software instant service. Different enterprises can access the cloud customer service platform for realizing one-key construction of a self customer service system. Inputting of a large number of resources and fund for construction is not required. The customer service system supplies customer service seats. The enterprise only requires recruiting corresponding customer service personnel for supplying the customer service to outside. The cloud customer service platform according to the invention is based on the cloud seats in network video conference technology. The cloud customer service seats supply abundant customer service modes, thereby greatly improving customer experience and improving product consulting and after-sale service quality.

The invention relates to an overall network management wired audio-video on demand accounting and charging system, especially, an overall network management accounting and charging system related to on demand of audio-video products, such as film and television, music and so on, belonging to the digital accounting and charging field of audio-video products. The system comprises at least one on demand terminal in which an on demand recording unit is embedded in the on demand software, at least one local small cloud accounting and charging management server for one operating region, a network device and a printing output device; the system is at least connected with one upper cloud accounting and charging management server; the cloud accounting and charging management software is installed in the management server of each level, and the management server of each level respectively has an oblige information database, a centralized accounting database and a centralized charging database; and the on demand terminal and the management server of each level organize the network by a connection method of being parallel in same-level connection, serial in graded-level connection and parallel in skip-level connection. The system provided by the invention can solve the technical problems related to charging the related rights in copyright when using the audio-video products in a digital form, and the like.

The invention relates to a high-voltage cable cross interconnection loop resistance live-line detection system and method. The system comprises a current injection module which injects a direct current into any two phases of metal sleeves of a three-phase cable of a high-voltage cable cross interconnection loop at one side of a cross interconnection box to form a current loop; a current and voltage acquisition module, used for testing the magnitude of the injection current and the voltage difference between two-phase injection points forming a current loop; a loop direct current detection module, used for detecting the magnitude of direct current in a three-phase cable metal sleeve on the other side of the cross interconnection box when the direct current is injected; and a central processing unit, used for controlling the switching of the three-phase loop injected by the current injection module and calculating the loop resistance of the three-phase cable cross interconnection loop before and after the direct current injection point according to the acquired data. Compared with the prior art, the system can be used for live testing, and high-precision detection of milliohm-level resistance can be realized in a high-voltage cable cross interconnection loop with induction voltage of hundreds of volts and circulating current of dozens of amperes.