6results about How to "Large sampling range" patented technology

The invention relates to a visual portable bottom mud sampler, which belongs to the technical field of river channel bottom mud sampling detection, and comprises a transparent pipe, the top of the transparent pipe is in threaded connection with a connecting pipe, the outer surface of the connecting pipe is provided with a connecting assembly for improving the stability of the sampler, and the outer surface of the connecting assembly is provided with four foot stools for providing supporting force. An impact mechanism for improving the sampling efficiency and saving manpower is arranged at the top of the connecting assembly, a measurement and control assembly for providing energy for the device is arranged at the top of the impact mechanism, a receding assembly for improving the operation stability of the device is arranged at the top of the measurement and control assembly, and a negative pressure assembly for performing negative pressure extraction on sludge is arranged on the inner side of the transparent pipe. According to the visible portable bottom mud sampler, the device can be quickly mounted and dismounted through the connecting assembly, the portability of the device is further improved, and meanwhile, through the detachable design of the transparent pipe, the connecting pipe and the receding pipe, the carrying convenience is further improved.

The present invention relates to the field of environmental detection technology, and discloses a strong wind particle concentration detection device, including a supporting base plate, an exhaust cavity is arranged at the center of the supporting base plate through a fixed plate, the fixed plate and the exhaust cavity are connected by a rotating shaft, buffer components are arranged on the supporting base plates on the left and right sides of the fixed plate and are connected to a connecting piece, the lower end of the connecting piece is connected to an exhaust channel, the exhaust channel is connected to a power supply slot, an air collecting slot is arranged at the upper end of the connecting piece, the upper end of the air collecting slot is connected to a swing arm, the swing arm is provided with an inner cavity, and the wall surface of the swing arm is provided with an air inlet slot. The strong wind particle concentration detection device, through the setting of the swing arm and the exhaust cavity, enables the detection device to realize the detection of strong wind air pollutants, and due to the swing of the swing arm, the measuring device can contact a larger area of ​​strong wind area, the sampling range is also increased, and the detection accuracy is further improved.

The utility model discloses a high stability integrated real -time on -line monitoring equipment, include: axle core piece, monitoring unit, monitoring unit sets up one side at axle core piece, and monitoring unit is used for to gas monitoring, rotating unit, rotating unit sets up in monitoring unit, and rotating unit is used for to monitoring unit rotation, hanging support subassembly, hanging support subassembly sets up on rotating unit, and hanging support subassembly is used for to monitoring unit, rotating unit connection, the utility model discloses a monitoring unit effective suction equipment towards's gas, and cooperate rotating unit, make gas drive monitoring unit flexible rotation, expand gas sampling range, promote monitoring response speed, and hanging support subassembly connects rotating unit and monitoring unit, ensure the rotation stability of monitoring unit, enhance its structural firmness, reduce vibration interference, realize multi -angle, large -range detection.

The utility model relates to the field of heavy metal detection, in particular to soil heavy metal detection equipment which comprises supporting columns, connecting seats are fixedly connected to the opposite sides of the two supporting columns, clamping grooves are formed in the opposite sides of the two connecting seats, and collecting boxes are clamped in the clamping grooves. The tops of the multiple supporting columns are fixedly connected with the same platform plate, a sampling module is arranged at the top of the platform plate, a detection box is fixedly connected to the top of the platform plate, a fluctuating assembly is arranged on the inner wall of the bottom of the detection box, a metal detector is fixedly connected to the inner wall of the top of the detection box, and a round hole is formed in one side of the detection box; the soil heavy metal detection equipment comprises a sampling module and a circular hole, a rotating rod is movably connected to the interior of the circular hole, a feeding channel is fixedly connected to the outer wall of the rotating rod, the sampling module comprises a protective barrel, and the soil heavy metal detection equipment has the advantages that soil at different depths on the same vertical plane can be sampled and detected, and the accuracy of soil heavy metal detection results is improved.

This invention discloses a key exchange method, apparatus, and storage medium based on a modular lattice. The key exchange method includes: Party A generating a random number seed, obtaining a compressed public key, and sending it to Party B; Party B using the random number seed to obtain the compressed public key; recovering data from the received compressed public key from Party A and calculating a temporary key; processing the temporary key using a segmented signal function to obtain a signal value; using the signal value to coordinate the temporary key to obtain a shared temporary key, thereby generating a verification tag and deriving the final key; Party A recovering data from the received compressed public key from Party B, recalculating the verification tag, and comparing them; only when a match is successful, the final key is derived using the same method. This ensures the randomness of the data and the ability to detect tampering with the data received by Party A, thus achieving higher security. This invention significantly reduces the failure probability while improving security.

The application discloses a current sampling device and an energy storage power supply. The current sampling device comprises an amplification circuit, a resistance shunt circuit, a switching circuit and a control circuit. The resistance shunt circuit is connected with the amplification circuit and comprises a first resistance and a second resistance connected in series. The switching circuit is connected between the resistance shunt circuit and the amplification circuit. The control circuit is connected with the amplification circuit and the switching circuit, and sends a control signal based on the size of the current collected by the current sampling device. The switching circuit responds to the control signal to turn on or turn off the electrical connection between the resistance shunt circuit and the amplification circuit. The switching circuit switches the resistance of the resistance shunt circuit according to the size of the current. In the case of small current, the resistance shunt circuit with a larger resistance is switched to improve the small current sampling accuracy. In the case of large current, the resistance shunt circuit with a smaller resistance is switched to expand the current sampling range.