75results about How to "Improve detection efficiency" patented technology

The invention provides a bearing noise automatic detecting machine which can automatically detect bearing noise, achieves double-face detection of bearing noise, improves detection efficiency and guarantees detection quality. The bearing noise automatic detecting machine comprises a machine frame, wherein two rotating devices are arranged on the machine frame, a bearing rotating head is arranged on each rotating device, and the machine frame is provided with a transverse bearing carrying mechanism and longitudinal bearing loading devices corresponding to the rotating devices respectively. The transverse bearing carrying mechanism comprises a forking plate, the forking plate is respectively connected with a transverse air cylinder and a longitudinal air cylinder, and three or more forking grooves corresponding to bearings are formed in the forking plate. Each longitudinal bearing loading device comprises a dragging plate, wherein the dragging plate is connected with a dragging plate conveying air cylinder, the dragging plate is provided with first bearing containing grooves corresponding to the forking grooves in the two sides of the forking plate, the machine frame is provided with a rotary second bearing containing groove corresponding to the forking groove in the middle of the forking plate, bearing loading heads are arranged on positions, corresponding to the first bearing containing grooves, of each dragging plate, and sensors are arranged on positions, corresponding to the first bearing containing grooves respectively, of the machine frame.

The invention discloses a detection method of 2-methylimidazole and 4-methylimidazole in baked food. A mixed solution of trichloroacetic acid and methyl alcohol is added to a baked food sample to make protein, colloid and other impurities subside, supersonic extraction is conducted, a solution to be detected is obtained through centrifugation and filtering, a CAPCELL CR (1:4) chromatographic column (5 microns, 2.0 mm*150 mm) is adopted for separation, and the 2-methylimidazole and the 4-methylimidazole are subjected to qualitative and quantitative analysis through an isotope dilution ultra high performance liquid chromatography tandem mass spectrometry method. The method is free of solid phase extraction and other complex sample pre-processing procedures, three types of isomeride of the methylimidazole can be effectively separated, the ion inhibition effect is effectively lowered, sensitivity is improved, and the detection method has the advantages of being low in detection limit and good in accuracy.

The invention discloses a double-band imaging discharge detector for a high-speed train, and an application method of the double-band imaging discharge detector. The detector comprises a visible light lens, a visible light camera, an ultraviolet lens, an ultraviolet camera, and a processing and control board, and a power board. The detector is installed behind a pantograph of the roof of a locomotive. The visible light camera matched with the visible light lens obtains visible light background images of the pantograph and an overhead line system in front of the locomotive, and transmits the images to the processing and control board. The ultraviolet camera matched with the ultraviolet lens and a filter obtains the ultraviolet target images of the pantograph and the overhead line system in front of the locomotive, and transmits the images to the processing and control board. The processing and control board carries out the image processing, and judges whether the key parts of the pantograph and the overhead line system perform partial discharge and whether the pantograph and the overhead line system generate arcs or not, and carries out the positioning and displaying of video images when the partial discharge happens or the arcs are generated. The detector can timely find out the partial discharge conditions, detects the arc state in real time, and reduces the unnecessary economic loss in order to guarantee the normal transportation order of the high-speed train.

The invention discloses a device for drop tests of a mobile phone. The device comprises a stand column, a lifting assembly, a control assembly, and a transportation assembly. The stand column is provided with a lifting guide rail. The lifting assembly can slide on the lifting guide rail. Sliding of the lifting assembly on the lifting guide rail is driven by a first wire rope pulley lifting assembly. The lifting assembly comprises a sliding base body, and the sliding base body is rotatably connected with an L-shaped pneumatic finger, and the sliding base body is provided with a rotating assembly. The transportation assembly comprises a feed assembly. The feed assembly comprises a feed sliding rail, and the feed sliding rail is slidably provided with a belt base. The sliding of the belt base on the feed sliding rail is driven by a second wire rope pulley lifting assembly. The belt base is connected with a conveyor belt. A plurality of placing frames are placed on the conveyor belt. The distances between each two adjacent placing frames are equal. Each placing frame is rotatably provided with a clamp. Beneficial effects of the device are that free-fall tests on edges of a mobile phone are realized, and detection efficiency is improved.

The invention provides a tool for RDT testing of a solid state disk chip, and relates to the technical field of chip testing, the tool comprises a sealed shell, a turnover device, a fixing device and a detection device, the turnover device is arranged in the sealed shell, the fixing device is arranged on the turnover device, the detection device is arranged in the sealed shell, and the detection device is arranged on the turnover device. In addition, the invention can solve the following problems: a, when a test program is injected into the solid state disk chip, an external interface needs to be butted with the solid state disk chip, but an existing fixing tool for testing is poor in stability, so that the solid state disk chip is easy to deviate after being subjected to an external force, and the test result is influenced. And b, only a single solid state disk chip can be tested during the RDT test of the existing solid state disk chip, the efficiency is poor, and the test efficiency cannot be effectively improved.

The present discloses a radioactivity activity transfer and measuring device and belongs to the radioactivity activity measurement field. The device comprises a shielding chamber, a detector, a supporting table and a reference source; the detector is disposed in the shielding chamber; the detector is a scintillation detector composed of a well type NaI (Tl) crystal; the supporting table is used for supporting the shielding chamber; and the reference source is arranged within the detector. A radioactivity activity measuring method includes the following steps of: a, the radioactivity activity measuring device is turned on and warmed up, and the resolution of the detector is checked; b, energy calibration is performed on the detector; c, a background energy spectrum is measured; d, the energy spectrum of a sample to be tested is measured; e, the full spectrum count rate of the sample is read, so that the net count rate n of the sample is obtained; f, the net count rate n of the sample tobe tested and total efficiency are substituted into a formula A=n / epsilonT; and g, the activity A of the sample to be tested is calculated. The portable radioactivity activity transfer and measuringdevice and measuring method of the invention have the advantages of small size and light weight.