9results about How to "Improve security level" patented technology

The application provides a kind of active safety control method and device of vehicle.When dangerous target appears in front of the vehicle, the active safety control method includes: according to whether brake system and AEB module have fault, AEB fault condition is set to allow triggering or prohibit triggering;According to whether steering system and AES module have fault, AES fault condition is set to allow triggering or prohibit triggering;According to the vehicle speed of the vehicle, AEB speed condition is set to allow triggering or prohibit triggering, and AES speed condition is set to allow triggering or prohibit triggering;According to TTB_limit, TTB_trigger, TTT_limit, TTT_trigger and collision time, AEB collision time condition is set to allow triggering or prohibit triggering, and AES collision time condition is set to allow triggering or prohibit triggering;When multiple AEB conditions are all allowed to trigger, the AEB module can be triggered to execute AEB function;When multiple AES conditions are all allowed to trigger, the AES module can be triggered to execute AES function.In this way, the triggering of active safety function is accurate and safe, and the connection between functions is smooth.

This invention discloses a quantum-attack-resistant blockchain-based password authentication key exchange and authentication method. The method involves inputting preset parameters, a trapdoor, a matrix, a noise vector, a password, and a public key into a computer system; executing a parameter generation algorithm to generate public parameters; executing a hash key generation algorithm to generate a hash key and a projected hash key generation algorithm to generate a projected hash key; generating a tag based on the identifiers of both communicating parties and the projected hash key, encrypting it to obtain ciphertext, and transmitting and receiving the projected hash key and ciphertext from the communicating party; verifying the validity of the communicating party's projected hash key, and generating a session key based on relevant parameters; and finally, the computer system processor executes a computer program and outputs the session key. This invention integrates a lattice-based smooth projected hash function with a trapdoor and a blockchain structure, possessing quantum attack resistance, general composable security characteristics, requiring only one round of communication, and is suitable for large-scale blockchain node scenarios.

This invention belongs to the field of bulldozer technology and provides a safety control method and system for bulldozer escalators. It controls the escalator's ascent or descent when the following conditions are met simultaneously: the bulldozer is stopped, the bulldozer is in zero gear, the escalator limit switch operation signal and safety judgment signal are mutually exclusive, and the circuit is normal. The system also considers the escalator's descent during bulldozer deceleration. It considers whether there are simultaneous escalator ascent and descent switch press signals, whether the bulldozer is stopped, whether the bulldozer is in P gear, whether the escalator limit switch operation signal and safety judgment signal are mutually exclusive, and whether the circuit is normal, thus maximizing the safety of ascent and descent control. During escalator descent control, it achieves the goal of simultaneously stopping the engine, opening the door, and escalator descent, shortening control time and improving operator efficiency while ensuring safety.

This application provides a functional safety-based gear position monitoring method, device, and electronic device. When torque and speed information are available, ASILC-level torque and speed information is preferentially used as monitoring input information. This allows for direct calculation of the current gear at level C, improving the safety level of gear position monitoring and reducing driving risks caused by inaccurate gear position monitoring. When torque or speed information is unavailable, the current vehicle speed at level ASILB is used as input information to ensure uninterrupted monitoring of the current gear position. This strategy of using level C information as the primary source and level B information as a secondary source for monitoring the vehicle's functional safety gear positions enhances the safety level of gear position monitoring while ensuring that monitoring of the current gear position does not stop even if level C information monitoring malfunctions, thus improving the safety of the user while driving.

This invention discloses a self-activated solid waste slurry and its preparation method, comprising waste slag, a solid waste cementitious material, and water. The components are expressed as follows by weight percentage or parts: 100 parts waste slag; 15-60 parts solid waste cementitious material, wherein the solid waste cementitious material consists of a silicon-aluminum rich precursor, a strongly alkaline activation source, and a rheology-modifying supplementary source, with a mass ratio of 1:(0.2-0.8):(0.1-0.4); and water. This invention eliminates the highly corrosive liquid chemical activator required in traditional alkaline activation materials, achieving self-activation through dry powder premixing of a strongly alkaline activation source, a silicon-aluminum rich precursor, and a rheology-modifying supplementary source.

The application provides a multi-channel bidirectional holographic metasurface for orbital angular momentum encryption communication, and belongs to the field of wireless communication and information security, and comprises a feed antenna for generating linearly polarized incident electromagnetic waves, a vortex wave generating metasurface arranged in the radiation direction of the feed antenna and formed by a plurality of polarization selection metasurface units arranged according to an orbital angular momentum phase distribution diagram, and used for converting the linearly polarized electromagnetic waves into vortex electromagnetic waves carrying preset orbital angular momentum modes, and a holographic metasurface arranged in parallel with the vortex wave generating metasurface and formed by a plurality of polarization selection metasurface units arranged according to a holographic amplitude and phase distribution diagram, and used for receiving the vortex electromagnetic waves and reconstructing a holographic image; the holographic metasurface also has bidirectional working capability, and is switched to a forward or reverse working state by being flipped by 180 DEG around a fixed axis, so that the holographic image can be reconstructed under bidirectional incidence. The application realizes safe and high-capacity multi-channel bidirectional holographic encryption imaging in the microwave frequency band.

This application discloses a relay intelligent control method and system for AC loads. The method includes the following steps: based on the multimodal data of the relay, predicting and updating the mechanical action delay of the relay; and issuing a drive command before the AC zero-crossing point based on the predicted mechanical action delay after receiving a switching command; using parallel hardware fast protection channels and software diagnostic channels to monitor and protect the relay coil in real time; and constructing a switching control strategy library optimized based on intelligent algorithms learning historical experience to identify the load type in real time and dynamically switch the optimal switching control strategy accordingly. The system is used to implement the above method. The beneficial effects of this application are: by combining the hardware fast protection channel with the software protection channel, the circuit can be immediately cut off in the event of a severe short-circuit fault. The hardware protection operates independently of the controller, and combined with the intelligent diagnostics of the software channel, a dual protection redundancy is formed, significantly improving the system's safety level.

The application provides a touch screen detection method, device and touch screen. The device comprises a first group of detection terminals, which are used to detect a touch screen signal under the control of a first control unit; a second group of detection terminals, which are used to detect the touch screen signal under the control of a second control unit when the first group of detection terminals do not detect the touch screen signal in a touch state; and a main control unit, which is used to determine a touch screen state according to the touch screen signal. The application is advantageous for locating touch screen faults by configuring two groups of detection terminals, and the provided touch screen has a safe redundancy function.

A System-on-Chip (SOC) chip and a data processing method applied to the SOC chip are disclosed. The SOC chip includes: a peripheral interface module, including a first peripheral interface and a second peripheral interface, wherein the first peripheral interface is used to receive first raw data and the second peripheral interface is used to receive second raw data, and the security level of the first raw data is higher than that of the second raw data; a data processing module, used to perform security processing on the first raw data to obtain processed data; and a processor, used to perform corresponding processing on the processed data and the second raw data. The first raw data has a high security requirement. In the SOC chip of this embodiment, the first raw data is sent to the data processing module for security processing, so that the processor only processes the processed data. This avoids the risk of data tampering and leakage caused by the processor acquiring the data first, thus meeting the security protection requirements for the first raw data and improving data security.