3results about How to "Real-time delivery" patented technology

The utility model discloses a kind of early warning devices about preventing steel wire rope to be twisted into speed reducer, it is related to early warning device technical field, to solve the problem of steel wire rope running groove and being twisted into speed reducer to cause its damage, operation interruption. The device includes support, touch type positioner, alarm, screw rod and contactor;Support is welded on the outside of speed reducer, across speed reducer and steel wire rope reel, for fixing other components;Touch type positioner is installed on the top of support by screw rod, for signal transmission;Alarm is installed in crane cab;Contactor is installed in hoist electrical control cabinet, for controlling hoist operating circuit and triggering alarm. When working, if steel wire rope deviates from predetermined path and touches touch type positioner, positioner sends signal to contactor, contactor immediately cuts off hoist power supply to make it stop running, and triggers alarm to prompt operator to handle. The device can prevent steel wire rope to be twisted into speed reducer in real time, can guarantee that crane grab bucket is safely and efficiently operated.

The invention relates to a waterlogging electric shock risk early warning device for smart city management. A detection module detects electric field changes in water and air around a target area in real time, and monitors whether there is an electric shock hidden danger; the data processing module is used for receiving the signal of the detection module, processing and analyzing the signal and judging whether an electric shock risk exists or not; the alarm module sends an alarm signal and sends alarm information to the smart city management platform through the communication module; the communication module uploads the processed data to a smart city management platform through a wireless network or a wired network; the control module coordinates the work of each part of the device and optimizes the logic processes of detection, processing and communication; the power supply module supplies power; the cloud platform interface is in butt joint with a smart city management platform. Potential electric shock risks can be monitored in real time in the waterlogging environment, early warning is given out through the intelligent urban management platform, urban managers are helped to prevent electric shock accidents in advance, and the emergency response efficiency is improved.

This application discloses a frequency-modulated timing test system and method for sprint events, including a wireless starter, an infrared finish line detection device, a central control unit, and a display device. The infrared finish line detection device is fixedly installed at the finish line of the track, while the central control unit and display device are fixedly installed at the referee's stand. Each of the wireless starter, infrared finish line detection device, central control unit, and display device is equipped with a 2.4G wireless communication module and a 433M wireless communication module. During communication, when the number of communication failures due to interference in any frequency band reaches a preset threshold, the system automatically switches to another frequency band for retransmission, thereby effectively avoiding interference, significantly reducing the probability of communication failure, ensuring the real-time and reliable delivery of key commands, and thus guaranteeing the accuracy of timing and the fairness of the test.