75results about How to "Impact on test results" patented technology

The invention discloses a device and a method for measuring half-wave voltage of an electro-optic phase modulator. The device comprises a tunable laser device, a first optical coupler, a polarization controller, the electro-optic phase modulator to be detected, a second optical coupler, a photoelectric detector and a frequency spectrum analyzer which are connected in sequence and further comprises a microwave signal source and an acousto-optic frequency shifter. The device outputs optical carrier waves through the tunable laser device, divides the optical carrier waves into two beams through the first optical coupler, respectively processes the beams through the photoelectric detector and the electro-optic phase modulator to be detected, then combines the beams through the second optical coupler, achieves stable beat frequency, obtains the half-wave voltage of the electro-optic phase modulator by comparing the carrier wave beat frequency amplitude and the sideband beat frequency amplitude and has the advantages of high in resolution ratio, high in precision, good in accuracy, simple in structure and convenient to operate.

The invention discloses a Trojan horse detection method based on computer memory analysis technology, which comprises the following steps: behavior monitoring, malicious code detection, comprehensiveanalysis of disk information, comprehensive correlation analysis, and detection result presentation. Behavior monitoring includes process operation, registry operation, file operation and network datamonitoring. Malicious code detection includes dynamic link library detection, malicious process detection, hidden process detection, driver detection. Disk information comprehensive analysis includesregistry startup key, file scanning, PE file parsing. The detection method of the trojan horse of the invention can effectively prevent the influence of the rootkit attack on the detection result ofthe trojan horse by using the technology to detect such malicious code without decryption.

The invention discloses a biochip and a chip control method. The biochip includes a chip substrate, and a quantitative sampling device, a plurality of reagent chambers and a reactor which are on arranged on the chip substrate; every reagent chamber is provided with a pipeline communicated with the reactor, and every pipeline is provided with a normally closed micro-valve; and the quantitative sampling device is provided with a sample outlet, and the sample outlet is communicated with the reactor. The biochip combines all the advantages of a large automatic analyzer and a biochip, strictly realizes the analysis precision of the traditional automatic analyzer, and even is better than the traditional automatic analyzer in some functions.

A cymbal pickup and a stand provided with the same are described. The cymbal pickup can stably detect vibration corresponding to striking to the cymbal, and prevent damage of sensors. A mounting part of the sensor uses an insert part to remain a space between a first abutting section and a second abutting section to be fixed, thereby preventing the first abutting section and the second abutting section to close to each other due to a fastening effect of fastening members, and furthermore preventing effects of a fastening force of the fastening members on detecting results of a piezoelectric sensor mounted on the first abutting section. Consequently, detecting results corresponding to the vibration of the mounting part of the sensor conveyed by the cymbal can be outputted. In addition, deformation of the piezoelectric sensor as the stroke cymbal tilts can be prevented, and thus damage of the piezoelectric sensor caused by strongly striking the cymbal can be prevented.

The invention provides a vacuum system, belongs to the technical field of vacuum equipment and aims at solving the problem that the pressure change rule in a screw vacuum pump is difficult to accurately detect under different working conditions in the prior art. The vacuum system comprises an inspection valve, a screw vacuum pump, a vacuum cover and an air supplementing pipeline used for supplementing air to the vacuum cover; the air supplementing pipeline is provided with a flow meter used for measuring an air supplementing flow and a flow control valve used for controlling the size of the air supplementing flow; the side wall of the pump shell is provided with a plurality of exhaust holes communicated with an inner cavity of the pump shell; a plurality of exhaust holes are sequentially arranged at intervals in a length direction of a screw rod; and the inspection valve is provided with an air outlet hole and a plurality of air inlet holes and further comprises an air channel switching structure capable of enabling the air outlet hole to be communicated with any air inlet hole and simultaneously plugging the other air inlet holes if a plurality of air inlet holes are communicatedwith a plurality of exhaust holes in a one-to-one correspondence manner. The vacuum system provided by the invention can more accurately detect the pressure of the screw vacuum pump in the working process.

The invention discloses a blood free DNA protection reagent, a protection method adopting the protection reagent and a blood collection tube containing the protection reagent. The protection reagent comprises 20-100 mg/ml of an anticoagulant, 100-600 mg/ml of a preservative, 10-50 mg/ml of an anti-adsorbent and 20-50 mg/ml of a buffering agent. The anticoagulant comprises at least one of tripotassium ethylenediaminetetraacetate hydrate, ethylenediaminetetraacetic acid and disodium ethylenediaminetetraacetate dihydrate, the preservative comprises at least one of imidazolidinyl urea, diazolidinyl urea and diazolidinyl urea, the anti-adsorbent comprises at least one of polyvinyl alcohol, trehalose and Tween-20, and the buffer agent comprises glycine or Tris-HCL. According to the blood free DNA protection reagent, the influence of the protection reagent on free DNA detection and detection results is reduced, and meanwhile, the blood free DNA protection reagent also has a good preservation effect on blood free DNA.

The invention relates to a gene chip for detecting infectious bacterium pathogens in cattle and sheep, wherein, the gene chip comprises a solid phase carrier and an oligonucleotide probe fixed on the carrier, the oligonucleotide probe includes a detection probe and a quality control probe, and the detection probe selects DNA fragmentsfrom nucleotide sequences of cattle Brucella bacilli, goat Brucella bacilli, sheep Brucella bacilli, Mycobacterium tuberculosis var bovis and Bacillus tuberculosis typus humanus genomes. The invention also relates to a process for preparing the chip and a method utilizing the chip to detect five infectious bacterium pathogens in cattle and sheep, comprising processes of: combining the probes, preparing the chip, and carrying out the hybridization with treated and marked samples under test. The invention further relates to a detection kit of cattle and sheep infectious bacterium pathogens composed of the chip and a sample processing reagent, a hybridization reagent and a color-producing reagent as well as a specification. Utilizing the gene chip of the invention can achieve the purpose of detecting five bacteria simultaneously, and the gene chip has advantages of convenient operation, high accuracy and strong repeatability, and is significant for laboratory investigations and productive practices.

The invention relates to the technical field of cable sheath detection equipment, in particular to energy-saving and environment-friendly detection auxiliary equipment for cable sheath detection, which comprises an equipment main body. The upper and lower surfaces of the interior of the equipment main body are fixedly connected with fixing frames, and the top surfaces of the interiors of the fixing frames are fixedly connected with air springs; an extrusion plate is fixedly connected to the lower surface of the air spring, a guide plate is fixedly connected to the position, located in the fixing frame, of the lower surface of the extrusion plate, and marking liquid in the air spring is extruded and discharged, so that marking treatment is conducted on the protruding portion of the cable, and meanwhile the purpose displaying effect can be well achieved. The working efficiency of the equipment can be well improved, sundries on the surface of the cable move along with the flowing direction of airflow, so that the influence of the sundries on the cable detection result is avoided, and the accuracy of the equipment detection result can be well improved.

The invention relates to an air cylinder clamping mechanism and an air cylinder air volume sensor using the same. The air cylinder clamping mechanism comprises two clamping bodies cooperating with a tested air cylinder. The two clamping bodies hinged to each other are used for respectively carrying a magnetic driving detecting assembly and a permanent magnet assembly; pitching type adjusting basesare arranged on the two clamping bodies to install the magnetic driving detecting assembly and the permanent magnet assembly respectively; pitching swinging axes of the adjusting bases are parallel with or overlapped with hinging axes of the two clamping bodies. Locking assemblies are arranged between the adjusting bases and the corresponding clamping bodies. The magnetic driving detecting assembly and the permanent magnet assembly are arranged at the corresponding clamping bodies by the adjusting bases; and the initial positions of the magnetic driving detecting assembly and the permanent magnet assembly on the clamping bodies can be adjusted, so that the adjustable range of the initial distance between the magnetic driving detecting assembly and the permanent magnet assembly is large. Therefore, the cylinder dimension range of the adaptive air cylinder is large.

The invention provides a device for detecting the number of cigarettes in a cigarette packet. The device comprises a support seat and at least one set of infrared detection component, wherein a groove is formed in the lower end surface of the support seat; the infrared detection component is arranged in the support seat and comprises an infrared ray emitting tube and an infrared ray receiving tube; the emitting terminal of the infrared ray emitting tube and the receiving terminal of the infrared ray receiving tube are stuck into the groove; the light emitting optical axis of the infrared ray emitting tube and the light receiving optical axis of the infrared ray receiving tube are located in the same plane; the included angle between the light emitting optical axis and the lower end surface of the support seat is equal to that between the light receiving optical axis and the lower end surface of the support seat. The emitting terminal of the infrared ray emitting tube is used for emitting light to irradiate the cigarettes, the light is reflected by the surfaces of the cigarette to irradiate the receiving terminal, and a processing circuit can judge whether the cigarette packet is short of cigarettes according to the intensity of received light. The device is simple in structure and convenient to use, and is not in direct contact with the cigarettes so as not to damage and contaminate the cigarettes.

The invention discloses a water quality analyzer with an automatic cleaning function. The water quality analyzer comprises a box body and a base; the bottom end of the base is fixedly connected with aground plug; the box body and the base are connected through a telescopic rod; a detection device is arranged in the box body; the bottom end of the detection device is fixedly connected with a supporting column; one end, away from the detection device, of the supporting column is fixedly connected to the bottom end in the box body; a filtering device and a small water pump are fixedly arranged at the top end of the detection device; the filtering device is connected with a first water inlet pipe; the first water inlet pipe is connected with a corrugated pipe and a second water inlet pipe; the corrugated pipe penetrates through the box body and is connected with the base; the small water pump is connected with the detection device through a detection water inlet pipe; and a water inlet isformed in a side edge of the corrugated pipe. The filtering device is arranged, so that relatively large sundries in detected water can be filtered; and by arranging an ultrasonic wave generating device, attachments in the filtering device can be subjected to ultrasonic smashing, so that the filtering device is durable and low in maintenance cost.

The invention relates to the field of optical loss testing, and discloses an optical device, and an optical chip loss testing device and method. The system comprises a micro-ring resonance system, aninput system and an output system, the input system comprises a first optical fiber and a first optical coupler, the output system comprises a second optical fiber, a second optical coupler and a third optical coupler, one end of the first optical coupler is connected with the first optical fiber, and the other end of the first optical coupler is connected with the micro-ring resonance system; thesecond optical coupler is arranged at the uplink end of the micro-ring resonance system, one end of the second optical coupler is connected with a second optical fiber, and the other end of the second optical coupler is connected with the micro-ring resonance system; and the third optical coupler is arranged at the downlink end of the micro-ring resonance system, one end of the third optical coupler is connected with the second optical fiber, and the other end of the third optical coupler is connected with the micro-ring resonance system. The tested optical device and the optical chip are nested into the micro-ring resonance system, so that the test accuracy, stability and flexibility are improved.

The invention relates to a composite volume pulse wave signal collecting and processing fingerstall which comprises a first unit and a second unit capable of being communicated with the first unit. The first unit comprises an upper shell, a control circuit unit, a sliding base and a spring contact. The second unit comprises a spring wafer, a base, a silica gel strip, a sensor and non-woven fabric. The control circuit unit is arranged in the upper shell, and first sliding rails are arranged on the two opposite side faces of the periphery of the sliding base. Second sliding grooves are formed in the inner sides of the two side faces of the base, and the silica gel strip is fixed to the finger through the non-woven fabric. The sliding base of the first unit can be connected with the base of the second unit through cooperation of the first sliding rails and the second sliding grooves. The overall structural design is ingenious and reasonable, the sensor and the finger are combined tightly, firmly and constantly, use is more convenient, no wire is needed, measurement accuracy and stability can be improved, certain components can be abandoned as consumables when damaged, normal use of other components is not influenced, cost is reduced, and resources are saved.

The invention discloses a battery recovery detection device of a new energy automobile. The detection device comprises a detector body, a display screen is arranged in the upper portion of the front surface of the detector body and fixedly connected to the detector body, a handle is arranged in the right side of the detector body and fixedly connected to the detector body, and an alarm indicatingis arranged in the right side of the front surface of the detector body at a position close to the right lower portion of the display screen, and fixedly connected to the detector body; a fixation plate is arranged in the back surface of the original battery detector body, fixation rails are arranged in the left and right sides of the fixation plate, when the detector body is fixed to other equipment, the fixation rails are disposed in the outer side of the equipment and then slid, and at the same time, a sliding rod inside a fixing ring is pressed down till the surface of the equipment, so that the detector body can be fixed stably and conveniently; and the detector body is coated with an antistatic layer which can be used to eliminate influence of statics on instruction detection effectively.

The invention discloses a micro-quantitative sampling system for a biochip, which comprises a quantitative tube; a sample outlet is formed at the bottom of the quantitative tube. The micro-quantitative sampling system for a biochip further comprises a casing, a blowing unit, a camera shooting unit and a controller. A mounting through hole is formed in the casing; the lower section of the quantitative tube stretches to the mounting through hole; a blowing through hole is formed in the side wall of the casing for communicating a gas outlet of the blowing unit and the lower section of the quantitative tube; a gas passing channel is formed between the lower section of the quantitative tube and the mounting through hole for communicating the blowing through hole and the outer wall of the sampleoutlet; the sample outlet is located in a field range of the camera shooting unit; the camera shooting unit and the blowing unit are both electrically connected with the controller; and the controller is used for calculating the volume of a liquid drop according to the image of the liquid drop and controlling the output quantity of the blowing unit according to the volume of the liquid drop. Themicro-quantitative sampling system for a biochip in the invention uses a liquid drop non-contact manner to blow the quantitative sample liquid drop adhered to and suspended to the sample outlet at thetail end of the quantitative tube to a biochip reactor so that the sample is not polluted, and the sample quantitative precision is high; meanwhile, the structure is simple, the cost is low; and theconstancy is good.

A precision device for detecting an ammonia decomposition rate based on the physical properties of ammonia, comprises a water inlet pipe and an ammonia dissolving pipe, wherein a water inlet pipe upper cover is installed on the upper end of the water inlet pipe; a water inlet pipe plug is installed on the lower end of the water inlet pipe; a liquid pressure transmitter is installed on the left side of the water inlet pipe; the water inlet pipe is equipped with a full water level sensing switch and an initial water level sensing switch; the full water level sensing switch is located above the initial water level sensing switch; a water inlet pipe vent and a water inlet pipe water replenishing pipe are installed on the water inlet pipe plug at the top of the water inlet pipe; a water replenishing explosion-proof solenoid valve is installed on the water inlet pipe water replenishing pipe; a low water level sensing switch is installed on the right side of the water inlet pipe; the water inlet pipe is in communication with the ammonia dissolving pipe through a water inlet explosion-proof solenoid valve; and the top of the ammonia dissolving pipe is in communication with a gas purifying cylinder through a pipeline. The precision device is simple in overall structure and cannot expose the water inlet pipe to the air.