5results about How to "High trigger sensitivity" patented technology

The utility model discloses a storage frame with an automatic fire extinguishing mechanism, and relates to the technical field of storage, the storage frame comprises a support frame and two storage plates arranged on the inner surface of the support frame, a top pipe is arranged above each storage plate, the left side of each top pipe is in threaded connection with a water inlet pipeline, a plurality of threaded openings are formed in the outer circular surface of the lower side of each top pipe, and the outer circular surface of the lower side of each top pipe is in threaded connection with the water inlet pipeline. And fire-fighting spraying heads can be installed in the threaded openings, and a lifting mechanism is arranged outside the supporting frame. Compared with an existing common storage frame, according to the storage frame with the automatic fire extinguishing mechanism, when goods placed on the goods storage plate are on fire, fire-fighting spraying heads can be automatically triggered, water in jacking pipes can be automatically sprayed out to extinguish fire, the distance between the two jacking pipes and the upper surfaces of the goods can be adjusted by rotating hand wheels, and if the heights of the stored goods are not consistent, the goods can be automatically extinguished. The height of a certain jacking pipe can be independently adjusted by sliding the screw rod and a sliding block in the base, and the fire-fighting spray head can be better attached to the upper surface of goods through the design, so that more sensitive triggering is achieved.

This utility model discloses a high-precision digital sensor keypad switch keyboard, characterized by: including a PCB board, on which at least one digital magnetic sensor keypad switch is disposed; and on which a digital magnetic sensor is disposed, capable of linearly and accurately detecting the change in magnetic flux in the Z-axis direction caused by the height difference of the permanent magnet within the keypad switch, and quantifying it into a digital sample value to generate a high or low level digital signal output. The digital magnetic sensor and the keypad switch are configured in a one-to-one correspondence. The purpose of this utility model is to overcome the shortcomings of the prior art and provide a digital magnetic sensor keypad switch keyboard with a simple structure, low cost, effectively reducing the wobbling amplitude during the keypad's movement stroke, high triggering accuracy and reliability, relatively low frictional resistance, good tactile feel, and ultra-low latency.

The utility model discloses a high-precision 3D magnetic sensor shaft body switch and a 3D magnetic sensor shaft body switch keyboard, which are used for triggering a high-precision 3D magnetic sensor to generate and output digital signals and comprise a shaft base, a shaft cover connected onto the shaft base, a shaft handle arranged in the shaft base and the shaft cover, and a reset spring arranged between the bottom of the shaft handle and the shaft base. A shaft handle buckling part with an opening structure is arranged on one side wall of the shaft handle, and a permanent magnet is arranged in the shaft handle buckling part. When the shaft handle is pressed, the shaft handle moves downwards for a long stroke along an arc-shaped long guide rib position structure arranged on the edge of a shaft hole of the shaft cover, meanwhile, the permanent magnet assembled on a buckling position part of the shaft handle moves downwards so as to change the magnetic flux detected by the height difference between the 3D magnetic sensor and the permanent magnet, and the 3D magnetic sensor generates and outputs high-low level digital signals. The utility model has the advantages of simple structure, high triggering accuracy, high reliability, relatively small frictional resistance and good pressing hand feeling, and can effectively reduce the swinging amplitude in the movement stroke of the shaft handle.

The present invention relates to a high-performance portable electronic drum, comprising a drum skin, a membrane switch, a surface shell, a buzzer, and a bottom shell. The bottom of the drum skin is provided with closely arranged polygonal cavities, a membrane switch is further provided between the drum skin and the surface shell, and the membrane switch comprises a surface isolation layer, an upper film, a middle isolation layer, and a lower film from top to bottom. The upper film and the lower film are combined to form a conduction area. A plurality of buzzers are provided below the surface shell, and the plurality of buzzers are respectively located directly below a plurality of drum discs. A bottom shell fixedly connected to the surface shell is further provided at the bottom of the surface shell. The membrane switch of the present invention adopts a four-layer structure, which eliminates false triggering caused by vibrations generated by striking adjacent drum discs, effectively solves the problem of crosstalk, and at the same time, has a good striking feel and improves the triggering sensitivity of the drum disc.

The utility model relates to the technical field of network security, in particular to a network security real-time alarm device, which comprises a network interface, a network cable and an alarm device, and is characterized in that the alarm device comprises a supporting rod, a trigger rod, a pressure sensor and two opposite connecting plates, and the two opposite connecting plates are fixedly connected below the network interface; one end of the supporting rod is located between the two connecting plates and rotationally connected to the connecting plates, the other end of the supporting rod supports a network cable inserted into the network interface, the pressure sensor is located below the supporting rod, one end of the triggering rod is rotationally connected to the face, away from the network interface, of the supporting rod, and the other end of the triggering rod is used for triggering the pressure sensor when the supporting rod is separated from the network cable. One end, far away from the support rod, of the trigger rod triggers the pressure sensor, and the pressure sensor sends a signal to the alarm system, so that the effects of deterring attackers and reducing artificial damage to the network can be improved.