48results about How to "Safe and effective control" patented technology

The invention relates to an algaecide. The algaecide which can be used for effectively removing algae and precipitating alga bodies contains chitosan, fly ash autoclaved brick powder and allelopathic chemicals of gallic acid, nonoic acid or N-phenyl-naphthylamine, and is obtained by dissolving a certain amount of chitosan by using hydrochloric acid, then adding the fly ash autoclaved brick powder of 40-200 meshes, and then adding the dimethyl sulfoxide assisted dissolved allelopathic chemicals of gallic acid, nonoic acid, N-phenyl-1-naphthylamine or N-phenyl-2-naphthylamine. The chitosan and the fly ash autoclaved brick powder used in the algaecide provided by the invention are nontoxic, the allelopathic chemicals of gallic acid, nonoic acid and the like belong to plant secondary metabolism products, can be degraded easily in a water body and cannot cause secondary pollution, and although the diluted HCl solution is used for dissolving chitosan, great changes of the pH value of the water body are not caused in a dosage range. The algaecide provided by the invention can be used for removing the algae effectively and ensuring that the alga bodies are sunk to the bottom of water, has a small influence on the environment and does not cause secondary pollution, the water body is clear, and the beautiful outlook of the water body is not influenced, so that the algaecide is suitable for removing the algae from a small landscape water body taking blue algae as a dominant species.

The invention disclosed by the invention belongs to the technical field of control systems, specifically a robot motion control system, including an input module, the output end of the input module is electrically connected to the input end of the upper computer, and the output end of the upper computer is electrically connected to the signal The input end of the processing module, the output end of the signal processing module is electrically connected to the input end of the communication module, the output end of the communication module is electrically connected to the input end of the single-chip microcomputer, and the input end of the image acquisition card is electrically connected to the camera The output end of the single-chip microcomputer is electrically connected to the input end of the infrared emitting device and the drive module respectively. Based on infrared positioning technology and visual communication technology, the picking efficiency of fruit trees is improved, and feedback is given according to the motion state of the robot, which improves the The accuracy of robot target tracking is convenient for remote control, which reduces labor intensity, makes the robot move flexibly, and realizes stable, effective and safe control of the robot.

The invention relates to a preparation method of a modified material. A preparation method of a modified material capable of settling algae comprises the following steps: (1) pulverizing pulverized fuel ash steam-pressing bricks, grinding, and sieving; (2) dissolving calcium hydroxide with purified water or distilled water, slowly adding the ground and sieved steam-pressing brick powder, magnetically stirring for modifying for 12-26 h, wherein 0.01-1 parts by mass of calcium hydroxide in added in 1 part by volume of purified water or distilled water, 80-240 parts by mass of pulverized fuel ash steam-pressing brick powder in 1 part by volume of calcium hydroxide solution, the unit of the part by volume is L, and the unit of the part by mass is g; (3) filtering the suspension with filter paper, washing with purified water or distilled water to neutrality to obtain calcium hydroxide modified pulverized fuel ash steam-pressing brick powder; and (4) oven-drying to obtain the final pulverized fuel ash steam-pressing brick modified material. The pulverized fuel ash steam-pressing brick modified material prepared by the preparation method of the invention has the advantages of complete and rapid algae removal and low use amount, and can safely and effectively control algae water bloom and remove the algal toxins in water body.

The invention relates to an intelligent wheelchair control method based on a brain-computer interface and artificial intelligence. The control method is characterized in that a measuring electrode is placed on a user's scalp and the user's brain electrical signals are accessed by means of wireless or wired. The user's motion control information is acquired by means of brain-computer interface. The environment map is generated according to LIDAR and obstacle information is acquired by means of ultrasonic distance measurement or camera. Obstacles are avoided and motion path planning is generated. The movement of wheelchair is controlled and machine learning method is used to achieve feedback of self-adapting and self-learning during movement control. The intelligent wheelchair control method has the advantages of achieving safe and effective control function of the wheelchair for the user and achieving control output of self-learning and self-adapting based on the user's control habit without installation of camera or other sensors in the operation environment. By cameras and sensors on the wheelchair, the coordination control of artificial intelligence is completed, and thus the application scope of brain-controlled intelligent wheelchair is expanded.

The invention provides a time-limited driving device and an automobile. The time-limited driving device comprises a camera, an image processor, a first timer and a control switch, wherein the camera is used for acquiring an image of a driver; the image processor is used for judging whether the same driver conducts driving or not according to the image of the driver; the first timer is used for recording accumulating time when the speed is higher than a first speed; if the image processor judges that the driver changes according to the image of the driver, the first timer is set to zero, or otherwise the first timer continues to record driving time; the control switch is used for triggering an alarm unit when the driving time is longer than first time, triggering a steering lamp to be turned on and a brake pump to brake when the driving time is longer than second time, and triggering a steering mechanism to turn forcibly and controlling the automobile to stop when the driving time is longer than third time. The time-limited driving device is clear in control logic and effective and safe in control, and therefore it is avoided that a traffic accident is caused by fatigue driving.

The invention relates to the technical field of casting stamping, in particular to a hydraulic linkage counter hammer. The hydraulic linkage counter hammer includes a frame body, an upper hammer head, a lower hammer head, an upper hydraulic linkage cylinder, a lower hydraulic linkage cylinder, a middle hydraulic linkage cylinder and an electromagnetic control system. linkage oil cylinder, the upper hydraulic linkage oil cylinder drives the upper hammer head to move up and down, the lower part of the lower hammer head is provided with the lower hydraulic linkage oil cylinder, and the lower hydraulic linkage oil cylinder drives the lower hammer head to move up and down, so The middle hydraulic linkage oil cylinder is arranged between the upper hammer head and the lower hammer head, and the electromagnetic control system includes a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, and the first electromagnetic valve is connected with the upper hammer head. The hydraulic linkage oil cylinder is electrically connected, the second electromagnetic valve is electrically connected to the lower hydraulic linkage oil cylinder, and the third electromagnetic valve is electrically connected to the middle hydraulic linkage oil cylinder.

Embodiments of the present invention provide a method and device for implementing a management and control policy of a mobile terminal, the method including: calculating the digest of the currently acquired first management and control policy in a trusted execution environment, and if the digest is inconsistent with the first target digest, then Acquiring the second management and control strategy stored in advance and set as read-only; under the trusted execution environment, modifying the memory data corresponding to the management and control object according to the second management and control strategy. Since the second control strategy is implemented by modifying the memory implementation data corresponding to the control object in the trusted execution environment, attackers in the ordinary environment cannot directly intervene and cause control failure, and the second control strategy is read-only. Therefore, the integrity and non-tampering of the second management and control strategy are fundamentally guaranteed. In addition, because the mobile terminal implements management and control according to the second management and control strategy, there is no need to lock the mobile terminal, and the participation of the management and control platform is not required, thereby realizing safe and effective management and control of the mobile terminal.