3results about How to "Act as an alarm" patented technology

This invention discloses a computer chassis movement alarm device based on information security, comprising a chassis body, a bottom cover fixedly connected to the lower side wall of the chassis body, a battery box installed on the inner top wall of the chassis body containing a battery, a buzzer installed on the inner wall of the chassis body, and multiple speaker holes on both side walls of the chassis body. A movement alarm mechanism is located inside the bottom cover, comprising a ceramic cylinder mounted on the inner top wall of the bottom cover, with a resistance wire wound around its outer wall. A crossbar connects the two inner walls of the bottom cover. This invention provides a double-layered alarm effect by automatically emitting an alarm sound when the chassis is moved or lifted. Furthermore, the alarm sound increases in volume as the movement or lifting increases, thereby improving the alarm effect of the computer chassis and preventing serious damage.

The utility model discloses a kind of water table water pressure monitoring alarm, it is related to water pressure technical field, including T pipe and the first threaded ring and second threaded ring respectively threaded connection in its both ends, the middle part of the T pipe is threadedly connected with alarm mechanism, the alarm mechanism includes water pressure sensor, carrier assembly and sound warning component, the alarm is installed in the water inlet end of water table, when using, water first passes through the T pipe of alarm again enters water table, water pressure sensor is located in the middle part of T pipe, real-time measurement water pressure, the digital signal of water pressure sensor is received by single-chip microcontroller inside ring shell, control instruction is sent to motor, after motor is electrified, drive fan ring rotation, and multiple through slots in the edge of fan ring pass through the through-hole of outer sleeve ring alternately, thereby produce explosive sound, sound is spread outward through loudspeaker mouth, play alarm function, water pressure sensor measures pressure at water table water inlet end, without manual inspection, achieve timely and effective monitoring, reduce unnecessary loss.

The application discloses a kind of mine seismic well ground joint monitoring network layout method, using the following steps: determining the area and boundary conditions of the monitored mining area;According to the geological factors and mining technical factors, the underground key area is divided;Establish the underground monitoring system;According to the effective monitoring coverage of ground microseismic sensor, the distribution of underground goaf, the ground monitoring key area is divided according to the direction of coal mining and tunneling;Exploring the bedrock of the ground monitoring area and determining the distribution position of the bedrock in the ground monitoring area;Select the bedrock in step five to establish the ground monitoring system.The underground monitoring system of the application can realize accurate monitoring of multiple parameters, effectively obtain the accurate change of coal rock attachment state, the ground monitoring system can realize large area monitoring on the ground, can cover the scale of mining area, command the overall situation, avoid omission, realize early warning, and ensure the safety of coal mining.