35results about How to "Reliable exchange" patented technology

The invention belongs to the technical field of block chains and internet information, and discloses a digital asset information exchange system and method based on a block chain. The digital asset information exchange system based on a block chain comprises a data provider module, a data consumer module, a block chain network module, and a smart contract module. The digital asset information exchange system provides a preset digital asset exchange mode based on the intelligent contract technology of the block chain, does not need to consider the trust problem between subjects, aiming at the problems that a traditional data exchange mechanism depends on a third-party payment mechanism, and data records are prone to being tampered and forged. Based on an exchange medium of the block chain cryptocurrency, multiple subjects jointly maintain an account book, so as to guarantee that records are real, reliable and not tampered. According to the digital asset exchange mechanism disclosed by the invention, the digital asset exchange mechanism is developed on the basis of the characteristics of confidentiality, integrity, non-repudiation and the like of the block chain, and data asset exchange and sharing are promoted.

The invention relates to a device for fault diagnosis of mechanical equipment and a method thereof, particularly to a device for the online fault diagnosis when the mechanical equipment is operating and a method thereof. The technical scheme of the invention comprises: collecting a vibrating signal of a bearing seat and a shaft of a monitored device under the control of a complex programmable logic device (5), computing the correlation dimension of the signal by a digital signal processing chip (7) and analyzing the locus of journal center, collecting the temperature signal of the bearing seat under the control of a microprocessor (15), performing fast and reliable data exchange between the digital signal processing chip and the microprocessor through a twin port random access memory (9), judging the operating state of the equipment according to the amplitude of each signal, and alarming when a preset limit is exceeded, diagnosing the fault of the equipment according to the correlation dimension and the locus of journal center. Due to the adopted embedded computer structure, the invention has small volume, low power consumption and high reliability, thereby being suitable for installation and application on the industrial field, wherein the fault diagnosis of the equipment for one time can be completed in five seconds. The invention real-timely provides enough information about the state of the equipment for the users.

A device for measuring the filling level of a liquid in a container is provided, which uses an ultrasound sensor. The ultrasound sensor is associated with a damping cup with at least one antechamber, and the antechamber has at least one outer ring and one inner ring. The inner ring is arranged within the outer ring and the ceiling of the inner ring has different heights. The ceiling has a lowest point and a highest point. In the area of the ceiling the inner ring is provided with a venting connection with the outer ring. The venting connection between the inner ring and the outer ring is located at the highest point of the inner ring. The ceiling of the outer ring has different heights including a lowest point and a highest point. A vent hole is provided at the highest point of the outer ring.

The invention discloses a workshop monitoring alarm system based on a CAN bus, which consists of a system monitoring host, a workshop controller and an office area alarm controller which are mutually connected through the CAN bus. The controller of each production workshop is provided with a keyboard entry, a buzzer and corresponding LED display lamps; and when the workshop has fault, a worker can press down corresponding error signal buttons, and the controller generates sound and light alarm and transmits signals to an office area and a central monitoring room through the CAN bus. The office area controller can receive the signals transmitted from the workshop, and the LED lamps display corresponding errors to prompt office workers. The central monitoring room is provided with a computer host, and the CAN bus receives and records various error signals transmitted from the field and displays the error signals on the LCD. The workshop monitoring alarm system has real-time and reliable communication capability, and good expansion capability of the system is suitable for the workshop monitoring alarm systems of various types and scales.

The invention relates to a real-time dynamic active harmonic compensation device for a high voltage system. The real-time dynamic active harmonic compensation device is connected to the high voltage system in parallel and comprises a main circuit, a control circuit and a high voltage air reactor, wherein the main circuit comprises an H bridge link inverter unit, the control circuit comprises a main control unit and an H bridge link inverter control unit which are connected in sequence, the H bridge link inverter unit is connected with the main control unit and the H bridge link inverter control unit respectively, and the H bridge link inverter unit is connected with the high voltage system through the high voltage air reactor. Compared with the prior art, the real-time dynamic active harmonic compensation device for the high voltage system has the advantages of being high in speed and accuracy, capable of compensating harmonic waves and reactive power and the like.

The invention discloses a high-speed LVDS serial synchronization communication controller. The high-speed LVDS serial synchronization communication controller comprises a microcontroller interface module (1), a work register array module (2), a receiving time sequence generator module (3) and a sending time sequence generator module (4). The high-speed LVDS serial synchronization communication controller can be matched with a serializer MAX9217, a deserializer MAX9218 and other customized integrated circuits of a Canada MAXIM company to form a full duplex and high speed LVDS synchronization serial communication interface. A control order, parameters and data given by an X80 series microcontroller can be received, the information exchanging process is controlled, and the working state of the high-speed LVDS serial synchronization communication controller is fed back to an X86 series microcontroller. When one frame of data are received or sent, an interrupt request signal of the X86 series microcontroller can be automatically produced. A user system can be assisted to achieve an information exchange protocol defined by a user, reliable high-speed, serial and synchronous full duplex data exchange between two electronic information systems connected through an LVDS signal line is achieved.

The invention discloses a mine three-proof heat exchanger, which comprises a streamline type shell, a heat exchanging bundle positioned in the shell, and a plurality of baffle plates, wherein the plurality of baffle plates are sequentially arranged along the direction of the cross section of the shell; the baffle plates are provided with water flow passageways; the water flow passageways among the baffle plates are kept at a certain inclined angle; the peripheries of the baffle plates are fixed on the inner wall of a shell; and the heat exchanging bundle is axially penetrated through the water flow passageways of the baffle plates along the shell. The water flow passageways on the baffle plates baffle and limit the direction of industrial water, therefore, the mine three-proof heat exchanger reduces the flow speed of the water flow, guarantees the water flow to be adequately and evenly contacted with the outer wall of the heat exchanging bundle, greatly improves the energy exchange, reduces the production cost, improves the economic benefit and the social benefit of enterprises, and is particularly suitable for various mines which contain water inflow with high impurity content, high mineralization and high corrosivity.

The invention discloses a cross-network isolation unidirectional import system based on a radio frequency technology and a data import method. The system comprises an extranet host, an Intranet host,a radio frequency card, a radio frequency tag reading equipment, a first light-emitting element, a first light-sensing device, a second light-emitting element and a second light-sensing device; the radio frequency card, the firt light emitting element and the first light-sensing device are connected with the external network host, the radio frequency tag reading device, the second light-emittingelement and the second light-sensing device are connected with the internal network host. The data importing method realizes one-way data importing based on the system. Cross-network data one-way import under the physical isolation condition is achieved, it is guaranteed that data in an internal network cannot flow to the external network while automatic, safe and reliable import of the external network data into the internal network is achieved, and the cross-network isolation data safe import problem of the external network and the internal network is thoroughly solved.

A computer-implemented method of purchasing real-world items includes the steps of defining a virtual currency with no stable derivative to a government-recognized currency, electronically assigning a quantity of the currency to at least one user account, offering at least one tangible item in a multi-user competitive purchasing process, accepting an offer from a user associated with the user account, the offer being a promise to exchange a quantity of virtual currency for the tangible item, carrying out the multi-user competitive purchasing process, determining a winner of the competitive purchasing process, and assigning ownership of the tangible item to the winner of the competitive purchasing process.

The invention relates to a system and method for quickly realizing network distribution of multiple WiFi devices. The system comprises a distribution network terminal and a plurality of to-be-distributed network devices; the to-be-distributed network devices initiate a connection request to a target AP according to target AP information in received terminal distribution network information, and after the to-be-distributed network devices are successfully connected with a target AP, the to-be-distributed network devices disconnect from the distribution network terminal and become the distribution network devices; the distribution network devices can send equipment distribution network information; after the to-be-distributed distribution network devices are connected with the distribution network devices, the equipment network distribution information sent by connected network distribution equipment can be received; the to-be-distributed network devices can send a connection request tothe target AP according to target AP information in the equipment network distribution information, and after the to-be-distributed network devices are successfully connected with the target AP, the to-be-distributed network devices disconnect the connection with the currently connected network distribution devices and become the network distribution devices. According to the invention, the network distribution of a plurality of WiFi devices can be effectively and quickly realized, and the network distribution security is greatly improved.

The invention relates to a distributed multi-physical-field coupling control system for simulating sweating cooling. When sweating cooling numerical simulation is carried out, the difference between flowing inside a porous material and flowing around the outside of a structural component is large, simulation is difficult to achieve under a set of frame due to the difference of used numerical technologies, and the precision and efficiency of a loose coupling simulation mode based on file exchange in engineering need to be improved. According to the method, the sweating cooling simulation coordination cooperation level is improved by determining the effective communication coupling model and the tight coupling boundary condition, and different calculation modules can run in respective address spaces and perform real-time tight coupling calculation during sweating cooling simulation, so that the simulation precision and the calculation efficiency are improved.

The invention discloses a video call method, terminal and system, and belongs to the technical field of communication. The method includes the following steps: a first terminal and a second terminal perform an instant video call through a pre-established video call channel; the first terminal acquires control information and / or status information apart from an instant video frame; the first terminal encodes the control information and / or status information and the instant video frame to generate video data; the first terminal sends the video data to the second terminal trough the video call channel; and the second terminal decodes the video data to obtain the instant video frame and control information and / or status information. By acquiring the control information and / or status information of an opposite terminal in the video call process, the video call method satisfies diversified requirements of users, and improves user experience.

The invention provides a dual-processor data exchange method, which is applied to a dual processor, the dual processor comprises a sending processor and a receiving processor, and the method comprisesthe following steps: the dual processor configures a dual-port RAM data space and a semaphore address; the dual-processor operates the semaphore address to obtain a semaphore state; and the dual processor accesses the dual-port RAM data space according to the semaphore state.

The method includes following steps: (1) through SIP message, first communication device informs management information of SIP signaling network to second communication device; (2) after receiving SIP message, second communication device executes corresponding processes based on management information of SIP signaling network. The invention increases call completing rate, and prevents waste of signaling resources.

The invention provides an on-board FlexRay communication interface device and method. The network isolation and interworking of a FlexRay terminal in an on-board environment are realized through a host processor end, a dual-port access memory end, and a FlexRay communication controller end which are physically independent of one another, the problem of data buffer is solved through the establishment of a communication frame buffer and a communication frame data storage area at a host end and a MCU communication frame storage area at the FlexRay communication controller end, and a solution is provided for the application of a FlexRay bus in an integrated avionics system.

The invention discloses a connection and reverse broadcast confirmation method for rapid and small amount of data transmission based on BLE, and the method comprises the following steps: S1, carrying a small amount of data required to be transmitted in a BLE broadcast packet, and transmitting the data in a plaintext or ciphertext manner; S2, for a connection method and a data connection method, using a connection request as communication confirmation, and if data transmission is completed, cutting off connection immediately; and S3, for a two-way broadcast data connection method, carrying out communication confirmation by using a method of switching a state and broadcasting a BLE broadcast data packet reversely. Secondary development is carried out on the basis of a Bluetooth 4.0 BLE protocol, a connection transmission method and a reverse broadcast transmission method are designed, the connection transmission method and the reverse broadcast transmission method are in the same type of data transmission mode, but the data interaction modes of the connection transmission method and the reverse broadcast transmission method are slightly different, reliable transmission of a small amount of data between devices within extremely short time can be achieved, data transmission delay can be well controlled, and a relatively low occupancy rate of the air bandwidth is maintained.

The invention discloses a roller chain conveying material cup interactive large-particle-size agricultural product quantitative weighing machine. The existing quantitative weighing process of large-particle-size agricultural products is carried out manually, time and labor are consumed, and efficiency is low. The machine comprises a feeding device and a weighing device, the feeding device comprises a roller conveying chain mechanism, a feeding hopper, a material channel and a connecting bottom plate. The roller chain conveying mechanism comprises a material cup, a driven shaft, a chain, a driving shaft and a first stepping motor; the weighing device is composed of a funnel and a plurality of weighing assemblies evenly distributed in the circumferential direction of the funnel. The weighing assembly comprises a weighing hopper and a second stepping motor. The large-particle-size agricultural products are prevented from being stacked and missed to be conveyed, the radius of the chain wheel, the radius of the material cups, the distance between the material cups and the rotating speed of the chain wheel are reasonably set, so that when the material cups are turned over, the large-particle-size agricultural products can be reliably exchanged between the adjacent material cups, and finally the large-particle-size agricultural products are conveyed into the weighing device to achieve automatic quantitative weighing; labor force in the quantitative weighing process of large-particle-size agricultural products is reduced, and efficiency is improved.

The present invention is worn continuously, and temporally successively acquires accurate information while calibrating biological information. Provided is a biological information measurement deviceequipped with a sensor device and a calibration device, wherein: the calibration device is equipped with a measurement unit for intermittently measuring first biological information, and a transmission unit for transmitting, to the sensor device, data including the first biological information, and calibration identification information which is identification information of the calibration device; and the sensor device is equipped with a reception unit for receiving the data and the calibration identification information, a determination unit for determining whether the calibration identification information is information for the calibration device which corresponds to the sensor device, a detection unit for temporally successively detecting pulse waves, and a calculation unit for, in cases in which the calibration identification information is information for the corresponding calibration device, calibrating the pulse waves using the first biological information and calculating second biological information from the calibrated pulse waves.

The invention relates to a cloud system of a technology transaction platform, and belongs to the field of electronic commerce. The cloud platform comprises two S5800 switches which are numbered as S4 and S5 and are used for high-speed access of a server; two S3600V2 serial numbers are S2 and S3, and are used as core switches of the main system; the two MSR2630 routers are numbered as R2 and R3 and are used as core routers of the main system. The technical scheme is suitable for a small data center and a cloud computing service platform, and the purposes of quickly and reliably exchanging data and enhancing the service deployment flexibility can be achieved.

The invention discloses a high-precision quick exchange workbench which comprises a support frame, a rotary shaft, rotary tables and multiple installation tables. The support frame is formed by fixedly connecting two vertically-arranged supporting arms and a cross beam; the rotary shaft is horizontally arranged, the two ends of the rotary shaft are rotatably connected with the two supporting armscorrespondingly and driven to rotate through a driving part; the number of the rotary tables is two, and the rotary tables are symmetrically fixed on the two sides of the rotary shaft along the axis of the rotary shaft; the multiple installation tables are fixed on the rotary tables; the installation tables are used for installing parts to be machined; and when the rotary shaft rotates by 180 degrees, the positions of the installation tables on the two rotary tables can coincide. The rotary tables are driven to rotate through the rotation of the rotary shaft, the whole structure coincides onetime once the rotary shaft rotates by 180 degrees, the problem that time is wasted in numerical control machining of upper and lower parts is solved, meanwhile, the angle of every rotation of the rotary shaft is consistent, the control precision is high, and rotary table exchange is convenient, fast, stable and reliable.

The invention discloses a casing type mine heat mining experiment method containing a phase change heat storage material. The experimental device used includes an experimental box body, a water supply system and a data collector. The experimental box body includes a rectangular parallelepiped frame structure heat preservation box body and A plurality of electric heating carbon fiber temperature control panels are arranged inside the inner wall of the heat preservation box. The inner cavity of the heat preservation box is provided with a filling space for accommodating filling materials and forming multiple filling layers. Tube heat collection device and ribbed heat pipe; water supply system includes heat preservation water tank, water distributor and water collector; data collector is connected with computer. The invention can simply and conveniently simulate the influence of different pipe row layouts on the heat storage and release of the mine filling body and the temperature field during the heat absorption and heat release process of the phase change heat storage material in the casing, and provides an experiment for the study of mine high temperature heat recovery devices. Basic, strong practicability, easy to popularize and use.