5 results about "Decibel meter" patented technology

The utility model discloses an acoustic vibration analysis device, which relates to the technical field of environmental acoustic detection and comprises a top cover box, a bottom cover box and a decibel head, a control panel is fixedly arranged in an inner cavity of the bottom cover box, and an input panel is arranged at the top of the top cover box. The main body structure of the decibel meter comprises the top cover box, the bottom cover box and the decibel head, the decibel head is rotationally arranged on the top cover box, the top of the top cover box is provided with the containing assembly, the containing assembly can control the decibel head to stretch out of or retract into the inner cavity of the top cover box, and when the whole decibel meter is in a standby state, the decibel head can be effectively protected; in the prior art, the decibel head of the decibel meter is directly and fixedly arranged at the head part of the decibel meter shell, the decibel head containing a large number of precision sensors is easily damaged by external collision, the measurement precision is influenced or equipment failure is caused, the decibel head cannot be flexibly stored, and a user needs to carefully store and carry the decibel head. The equipment protection difficulty is increased; and the use is inconvenient.

The utility model discloses a building fast-assembly plate sound insulation effect detection device which comprises a bottom plate, a supporting column is installed above the bottom plate, a sound insulation plate is installed at the top end of the supporting column, a first through hole is formed in the center of the sound insulation plate, a sound insulation cover is arranged above the sound insulation plate, and a decibel meter is installed on the top wall in the sound insulation cover. A plurality of air cylinders are installed on the upper surface of the supporting column, and piston rods of the air cylinders penetrate through the sound insulation plate and are connected with the sound insulation cover. According to the sound insulation testing device, the sound insulation cover and the sound insulation plate are used for sealing the fast-assembly plate inside, and then the adjustable pressing frame is used for pressing and fixing the fast-assembly plate, so that the sound insulation performance of the fast-assembly plate can be tested through the decibel meter inside the sound insulation cover, and the sound insulation testing device avoids the situation of external sound interference and enables the detection effect to be more accurate.

The utility model discloses building material sound insulation performance detection equipment which comprises two plate bodies, one side of one plate body is provided with a screw rod, and the end part of the screw rod penetrates through one side of the other plate body; the opposite sides of the two plate bodies are each provided with a sound insulation cover, and a loudspeaker and a decibel meter are installed in the two sound insulation covers correspondingly. The sound insulation cover is driven to be attached to the wall body through movement of the plate body, then the sound insulation effect of the wall body is tested through the decibel meter and the loudspeaker in the sound insulation cover, the sound insulation cover can avoid the situation that the test effect is affected by external sound, and the overall test effect and accuracy are improved.

The invention discloses an industrial grade decibel meter-based encoder noise efficient test system, which comprises a test bench, a mounting plate, bases, an electric control cabinet, a test mechanism, an auxiliary mechanism and a control display mechanism, and is characterized in that the mounting plate is arranged in the middle and at the bottom of the test bench, the bases are uniformly arranged at the bottom of the test bench, and the electric control cabinet is arranged in the test bench. The electric control cabinet is arranged on the bottom mounting plate, the testing mechanism is arranged on the upper mounting plate, the auxiliary mechanism is arranged in the testing mechanism and beside the testing mechanism, and the control display mechanism is arranged on the testing rack. According to the scheme, through a special mechanical structure, an excellent sound insulation design, an efficient operation process and stable hardware configuration, the problems that existing equipment is poor in adaptability, insufficient in sound insulation and low in efficiency are solved in a targeted mode, precision, high efficiency and stabilization of encoder noise testing are achieved, and the industrial batch detection requirement is met.

The present invention discloses a portable decibel meter, which includes a decibel meter housing. One side of the decibel meter housing is fixedly connected with an outer shell. A receiving cavity is formed between the decibel meter housing and the outer shell. One side of the inner cavity of the receiving cavity is fixedly connected with a wire. The end of the wire far away from the receiving cavity is fixedly connected with a monitoring rod. A guiding mechanism is arranged in the middle of the inner cavity of the outer shell. A plurality of adjusting mechanisms for adjusting the position of the wire are arranged in the receiving cavity. When the output end of the guiding mechanism moves horizontally away from the monitoring rod, the output ends of the plurality of adjusting mechanisms move downwards in sequence. When the output end of the guiding mechanism moves horizontally close to the monitoring rod, the output ends of the plurality of adjusting mechanisms move upwards in sequence. In the present invention, by pushing the slider to drive the guiding plate to move, the support block is sequentially driven to move towards the direction of the third groove, so that the driven rod moves into the third groove, and further the support block moves downwards under the action of the elastic rope to the lower part of the fixed ring.