37 results about "Control system security" patented technology

The invention provides an intelligent light control system, which comprises a main controller used for generating a wireless control signal upon receiving a triggering instruction sent by a user; and a wireless controller used for controlling the on / off state of a light fixture according to the wireless control signal, detecting the current signal of the light fixture in real time, and then feeding the state information corresponding to the current signal back to the main controller. The main controller receives and displays the received state information to a user, so that the user can check the state information in real time. According to the technical scheme of the invention, by means of the main controller, the wireless controller and the light fixture, the visualization and the intellectualization of the entire intelligent light control system are realized, while the wiring operation is not required during the entire control process. Therefore, the waste of cables due to the traditional wiring mode can be avoided. The investment cost of the traditional wiring operation is effectively reduced. Meanwhile, the current signal of the light fixture is detected in real time by the wireless controller, and then the corresponding state information of the light fixture is fed back to the main controller. In this way, the complex process of the manual signal detection operation is avoided. The above system is time-saving and labor-saving in operation. The security of the whole control system is better and the later maintenance efficiency of the system is higher.

The invention discloses an improved train control system secure data interaction method, which comprises the following steps of: expanding the shared key of a data transceiver and the length of a random number generated and shared by the transceiver, and calculating a session key with an increased key length by matching with a corresponding SM4 algorithm; dividing the security data X of the train control system into blocks according to N bits, using a data block and a full text of a session key as input in each round, performing iterative computation by using a corresponding SM4 algorithm, and generating an N-bit operation result Hi corresponding to the corresponding data block; regarding the operation result Hi as encrypted data of the corresponding data block, and covering the corresponding data block, so that the security encryption of the security data X of the train control system is realized; and selecting a corresponding lossless compression algorithm according to the type of the train control system security data, performing data lossless compression on the full-text encrypted train control system security data X, and sending the compressed data X to a receiver. According to the method, the data security is greatly improved, and meanwhile, the occupancy rate of wireless resources is reduced.

The embodiment of the invention relates to an authority control method, authority control equipment, user equipment and a system. The method comprises the following steps: extracting a physical unclonable function value of user equipment; Setting a physical unclonable function value of the user equipment as a trust root; Encrypting a preset application in the user equipment; And generating and sending authority control information to the user equipment so as to authorize a preset application in the user equipment, cancel authorization for an authorized application in the user equipment or adjust an authorization range. According to the embodiment of the invention, the remote authority control system is established by taking the physical unclonable function value of the user equipment as the trust root, the security is high, and the flexibility is high.

The invention discloses an OPC server safety defending system and aims at solving the technical problem that existing servers and industrial control systems are poor in safety. According to the technical scheme, the system comprises a safety defending system body and an operating system platform, and the safety defending system is composed of a control console and a data package filtration driving module. The operating system platform is composed of a Windows filtration platform and a network card. According to an OPC server network communication system structure, safety rules are set on a network layer, a transmission layer and an application layer of an OPC server, deep safety check and audit are conducted on data packages entering and exiting from the OPC server, vicious access behaviors and data packages are identified, filtered and removed, and the safety defending capability of the OPC server and the industrial control system is improved.

The present invention relates to a ModbusTCP protocol security enhancement method and system. The present invention uses the HMAC algorithm in the ModbusTCP protocol to provide identity authentication and integrity protection for the communication data of the industrial control system at the same time, and adopts the SM4 packet whose encryption and decryption speed is faster than the asymmetric encryption algorithm. The cryptographic algorithm provides confidentiality for the communication data of the industrial control system, and uses time stamps plus random numbers combined with random number set tables to prevent replay attacks at a finer granularity; on the premise of ensuring usability, the present invention comprehensively improves the industrial use of the ModbusTCP protocol. Control system security.

The invention discloses a robot control system which comprises a dual-core processor, wherein the dual-core processor comprises an advanced reduced instruction set computer machine (ARM) processor and a digital signal processor (DSP). According to the robot control system, an ARM+DSP control strategy is adopted; a conventional control mode of industrial computer PC+movement control card+servo drive+servo motor is replaced; an ARM is responsible for movement planning and track planning of a robot; the DSP is responsible for dynamic and kinematic calculation of the robot, the strong calculation performance of the DSP and the peripheral control property of the ARM are sufficiently utilized, and due to the function distribution, the expense of a main control chip can be effectively reduced, a relatively great amount of resources can be used for controlling the security and the precision of the control system, and the cost performance can be greatly improved; the robot control system has EtherNet and pulse analog quantity control modes which can be selected by users, and a servo drive and a servo motor applicable to multiple control modes are provided, so that control methods can be conveniently switched by the users, and relatively good universality can be achieved.

An industrial communication anomaly detection method based on dual similarity measures. This method analyzes the communication data in the industrial control network and extracts the industrial communication behavior characteristics according to the industrial communication interaction mode and the industrial protocol specification. Based on these characteristics, the behavior characteristic tree is constructed, respectively. Intra-tree similarity measurement and inter-tree similarity measurement, so as to discover abnormal communication conditions in industrial control networks. Through the above method, the present invention can comprehensively consider general network behavior characteristics and industrial protocol semantic characteristics, and detect industrial communication abnormalities caused by malicious attacks or misoperations and generate alarms through real-time analysis and abnormal judgment of industrial communication data to ensure Industrial control system security.

The invention discloses a remote wireless control system of a cutting and separating device and a method for using the same. The invention relates to the technical field of remote wireless control of a wireless cutting and separating device. The remote wireless control system of a cutting and separating device includes a signal receiver and a signal transmitter. The input terminal of the signal receiver is connected to the output terminal of the signal transmitter; the signal transmitter is composed of a power switch 1, a control panel 1, an antenna 1, an enabling switch 1 and a battery compartment 1; the control panel 1 includes communication detection, charging, detonation, Check mark, power 0~A and channel function; the signal receiver is composed of power switch 2, control panel 2, antenna 2, enabling switch 2, battery compartment 2 and wiring terminals; control panel 2 includes check mark, power 0~A And the channel function; the beneficial effect of the present invention is: by adding double switches for protection, the safety performance of the remote wireless control system is improved, and loopholes are avoided.

The invention provides a smart home control system. The control system comprises a control device, an auxiliary device and a plurality of household devices connected with the control device; the auxiliary device is used for collecting identity information and action information, and the control device judges whether to make an operation permission for operating the household devices available according to the identity information and determines an operation instruction for the household devices according to the action information when the operation permission is available. According to the smart home control system, before an operator operates the household devices, the smart home control system judges the identity information of the operator and makes the operation permission available tothe operator with the correct identity information, and the operator can operate the household devices in the smart home control system through the action information; the safety of the smart home control system is improved, and meanwhile the operator can control the household devices at his / her will through action instead of using a remote control to operate the household devices.

The present application provides a method and system for predicting the safety of an industrial control system. The industrial control system includes equipment and a data acquisition device connected to the equipment. The method includes the following steps: Step 1: Receive the information of each equipment input by the user Historical data; Step 2: Collect device information, calculate the associated risk value between two devices, and save it as a device associated risk value table; Step 3: Calculate the security situation value of each device; Step 4: Obtain the overall security of each device situation, and judge whether to call the police. Through the present invention, the cascade system is formed by using historical data modeling, and the overall safety of the industrial control system can be predicted, so as to achieve early detection and early maintenance.

The invention discloses a safety bracket assembly line for a full-automatic automobile operating system. An inner bracket conveying line is used for conveying inner bracket products to an inner bracket processing machine for grinding and drilling, and the processed inner bracket products are conveyed to a pre-assembly station; an outer bracket conveying line is used for conveying outer bracket products to the pre-assembly station for pre-assembling, and the pre-assembled products flow to the tail end of the outer bracket conveying line and taken out of the outer bracket conveying line through a transplanter; the inner and outer bracket products enter an assembly machine in sequence to be finally combined. In the safety bracket assembly line, the open outer bracket conveying line is introduced, a bottom conveying belt is matched with a guide groove at the upper end, and the entire assembly line is simple in structure and convenient to operate, so that the products are effectively positioned and transported smoothly, the conveying of the products is independent of tray transportation, the charging difficulty is lowered for operators, the floor area of the equipment is reduced, and the fault rate is lowered.