11 results about "Area network" patented technology

The invention provides a general CAN (controller area network) monitoring method based on network protocols. In the method, a configuration file technology is adopted, wherein a configuration file comprises the address, the number, the meaning, the attribute and other information of a lower controller; and an upper computer is used for establishing an interface to monitor the lower controller by calling different configuration files related to the network protocols and displaying or storing information related to equipment. The functions and the information in a software interface of the upper computer are refreshed in accordance with the changes of the configuration files, so that the equipment can be monitored based on the different network protocols by modifying the configuration files only, the monitoring requirements of the equipments with the different network protocols are met and the equipment has better generality.

The invention belongs to the technical field of vehicle monitoring technology and relates to a self-adaption mobile network bus video monitoring terminal. The self-adaption mobile network bus video monitoring terminal comprises a system core module, a data acquisition module, a human-computer interaction module, a USB (universal serial bus) concentrator module, a wireless communication module, a mobile hard disk storage module, a CAN (controller area network) bus module and an SD (security digital) card storage module. The terminal is combined with embedding technology, H.264 network video compression technology and human body identification and tracking technology, can videotape drivers and conductors in buses, front doors and rear doors and inside condition of the buses during a whole journey, and calculates the number of passengers, provides support for multiple networks, dynamically selects bearing networks according to network condition, and provides smooth real-time videos and vehicle information of passenger number, GPS (global positioning system) positioning information and so on. Therefore, by the aid of the self-adaption mobile network bus video monitoring terminal, effective monitoring to safe running of the buses and normal work of the drivers and the conductors is provided, and particularly real-time condition inside the buses can be quickly known under the condition of emergencies.

The invention discloses a finished car control model simulation method which can be used for reducing the establishment time of a simulation environment, improving the efficiency and simulating input signals including digital quantity, simulation quantity, a PMW signal and a CAN (controller area network) bus signal. The method comprises the following steps of (1) inputting the analog quantity, the digital quantity and the PWM input signal needed by a finished car control model through a signal builder, a MAT file or an Excel file of the Matlab (matrix laboratory); (2) storing and observing the analog quantity, the digital quantity and the PWM signal in a feedback signal through a scope, display or a MAT file; (3) exchanging an input/output signal of the CAN bus of the finished car control model with the Matlab via CANoe through a vector CANoe tool box.

The invention discloses an automatic selling system used for an unattended amusement bar, and relates to the field of automatic selling. The automatic selling system comprises a box body, an entry and exit entrance guard unit, a main control unit, a video monitoring unit, an air conditioner unit, a ventilation and air exchange unit, an illumination control unit and a fire alarm unit, wherein the main control unit is connected with the entry and exit entrance guard unit and the video monitoring unit; the main control unit is used for regulating air temperature in the box body through the air conditioner unit and the ventilation and air exchange unit; the main control unit is connected with the illumination control unit; the main control unit carries out fire detection and alarm through the fire alarm unit; the main control unit is in data connection with the video monitoring unit, the air conditioner unit, the ventilation unit, the illumination control unit and the fire alarm unit through a CAN (Controller Area Network) communication controller. The automatic selling system can be uninterruptedly opened for 24 hours a day, selling and management cost, manpower cost and working intensity are greatly lowered, convenience is brought to the life of urban residents, and a leisure place is provided.

The embodiment of the invention provides a method for correcting channels among base stations and a base station, and aims to realize channel correction of base stations in a large-area network, even in a whole network range. The method comprises the following steps that: a base station k+1 determines a channel difference parameter gammak+1 between the base station k+1 and a base station k according to a channel difference parameter gammak between the base station k and a base station k-1; and the base station k+1 performs channel correction relative to the base station k according to the channel difference parameter gammak+1, wherein k is a positive integer. According to the embodiment of the invention, the channel difference between one of two base stations on which channel correction is finished and a base station to be corrected is determined through the channel difference between the two base stations on which channel correction is finished, so that channel correction is performed on the base station to be corrected according to the channel difference, and channel correction in the large-area network, even in the whole network range can be realized.

The invention provides a CAN (Controller Area Network) bus communication control system and a communication system, the communication system is based on an SoC (System on Chip) framework consisting ofan MCU (Microprogrammed Control Unit) kernel and an FPGA (Field Programmable Gate Array) kernel which are integrated in the same system on chip, and a CAN bus controller module, an MCU bus mapping module and a CAN bus interrupt signal mapping module are arranged on the basis of logic resources in the FPGA kernel; the CAN bus between the MCU and the off-chip external CAN equipment is integrated inthe chip, the number of the CAN buses can be dynamically configured, and priority classification control of the MCU kernel on each CAN bus controller module is realized, so that the expansibility andusability of the MCU are improved, the design and application complexity of mounting the external CAN equipment by the MCU is reduced, a user can quickly apply the CAN buses, the dependence of the CAN bus priority on the CAN equipment node is reduced, and the controllability of the MCU on the CAN equipment node priority is enhanced. The invention also provides a method for dynamically configuringthe priority of each equipment node of the CAN bus.

The invention discloses a vehicle function test method, device and equipment and a computer readable storage medium, and belongs to the technical field of Internet of Vehicles. The method comprises the following steps: acquiring a first analog signal for testing a target function of a vehicle; converting the first analog signal into a first CAN signal under a controller area network CAN protocol used by the vehicle; sending the first CAN signal to a controller corresponding to the target function in the vehicle, wherein the first CAN signal is used for indicating the controller to perform a corresponding action; and receiving a second CAN signal fed back by the controller after executing a corresponding action based on the first CAN signal, and converting the second CAN signal into a second analog signal which is used for determining a test result of the target function. According to the mode, when the vehicle using different CAN protocols is tested, the test of the vehicle function and the determination of the test result can be completed according to the analog signal, and the efficiency of testing the vehicle function is improved.

The invention belongs to the technical field of computers, and particularly relates to a key generation method and device, a computer readable storage medium and terminal equipment. The method is applied to a first node in a preset controller local area network, the first node is any node in the controller local area network, and the method comprises the following steps: generating a first bit sequence; sending the first bit sequence in a bus of the controller area network; receiving a superimposed bit sequence in a bus of the controller area network, wherein the superposed bit sequence is a bit sequence formed by superposing the first bit sequence and the second bit sequence, the second bit sequence is a bit sequence generated by a second node, the length of the second bit sequence is equal to that of the second bit sequence, and the second bit sequence and the first bit sequence are sent in a bus of the controller local area network at the same time; and generating a key according tothe superposed bit sequence.