45results about How to "Easy to zero" patented technology

A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with processor (30). Processor (30) receives aural signals from two sensors (22, 24) each at a different location. The two inputs to processor (30) are converted from analog to digital format and then submitted to a discrete Fourier transform process to generate discrete spectral signal representations. The spectral signals are delayed to provide a number of intermediate signals, each corresponding to a different spatial location relative to the two sensors. Locations of the noise source and the desired source, and the spectral content of the desired signal are determined from the intermediate signal corresponding to the noise source locations. Inverse transformation of the selected intermediate signal followed by digital to analog conversion provides an output signal representative of the desired signal with output device (90). Techniques to localize multiple acoustic sources are also disclosed. Further, a technique to enhance noise reduction from multiple sources based on two-sensor reception is described.

A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with a processor. The processor receives aural signals from two sensors each at a different location. The two inputs to the processor are converted from analog to digital format and then submitted to a discrete Fourier transform process to generate discrete spectral signal representations. The spectral signals are delayed by a number of time intervals in a dual delay line to provide a number of intermediate signals, each corresponding to a different spatial location relative to the two sensors. Locations of the noise source and the desired source are determined and the spectral content of the desired signal is determined from the intermediate signal corresponding to the noise source locations. Inverse transformation of the selected intermediate signal followed by digital to analog conversion provides an output signal representative of the desired signal. Techniques to localize multiple acoustic sources are also disclosed. Further, a technique to enhance noise reduction from multiple sources based on two-sensor reception is described.

The invention discloses a taper position gauge for accurately measuring a big end diameter error of a taper hole. The gauge comprises a dial gage, a gage setting piece, a measurement rod, a gauge lower body, a gauge upper body, a spring and a tightening screw, wherein the measurement rod is movably mounted in the gauge lower body; the upper part of the gauge lower body is connected with the gauge upper body for mounting the dial gage; the top end of the measurement rod is contacted with a contact of the dial gage; the gauge upper body is internally equipped with the spring for supplying elastic force to the measurement rod; and a measurement head matched with the to-be-measured taper hole is mounted at the lower part of the measurement rod. According to the gauge, with the adoption of the dial gage and the gage setting piece, a base plane distance can be measured accurately; the qualification of a part can be judged accurately; and the gauge is quick and convenient in measurement, and high in reliability.

The invention provides an antifreeze water meter box easy to install and dismantle. The antifreeze water meter box comprises a water meter box casing, protruded limiting barrels are fixedly arranged on the outer side surfaces of through holes in the two sides of the water meter box casing, semicircular rubber clamp rings are disposed at the inner upper ends and the inner lower ends of the protruded limiting barrels, a heating pipe is mounted in a cavity inside a mounting base plate, two side ends of a water meter body are fixedly clamped in arc-shaped grooves in the surface of a supporting plate through arc-shaped clamping plates, the middle of the upper surface of the water meter box casing is provided with an observation notch, and the surface of an eaves edge at the upper end of the observation notch is matched and connected with a thread cap. Two side ends of a water meter are fixed into arc-shaped grooves in the surface of the supporting plate through bolts II and two groups of arc-shaped clamping plates, the water meter can be mounted in the water meter box casing quickly and stably, the two groups of semicircular rubber clamp rings tightly clamp a water inlet pipe and a water outlet pipe, cold air can be prevented from entering the water meter box casing through slits of the through holes, and when the outdoor temperature is too low, the heating pipe is started, so thatthe water meter can be effectively prevented from being frozen.

The invention provides an efficient waste water and gas online monitoring device capable of collection in multiple places. The device comprises a detection cabinet, a water filtering box is arranged on the left side of the detection cabinet, and a cylindrical inner groove is formed in the middle of the lower surface of the water filtering box; air bags are fixedly mounted on the outer side surface of the upper end of the water filtering box, water inlets are formed in the upper end surface of the left side of the detection cabinet, and a water outlet pipe is communicated with the water inlets; a flow divider is connected to the lower ends of collection tubes in a communicated mode, and multiple sets of waste water collection tubes are connected to the lower end surface of the flow divider in a communicated mode. According to the efficient waste water and gas online monitoring device capable of collection in multiple places, the water filter box floats on different portions of a waste water pool so that waste water of each place can be collected, a hairbrush cylinder rotates so that it can be guaranteed that filter holes are not blocked by large particle impurities, the flow divider is used for dividing the waste water into multiple groups, and the waste water is poured into the waste water collection tubes; analysis ends conduct alone corresponding detection on the waste water in the waste water collection tubes, so that the efficiency of waste water detection is improved; meanwhile, waste gas can be exhausted into an air pipe through an exhaust fan and is analyzed through a gas detector on the lower surface of the air pipe.

The invention discloses an eleven-roller straightener roller system zero calibration method. The eleven-roller straightener roller system zero calibration method comprises the steps that (1) after an upper roller system and a lower roller system are opened by screw-down motors, worn old rollers in the upper roller system and the lower roller system are pulled out and replaced with new rollers; (2) at least one horizontal pressing block is placed at each of the two ends of the roller face in the axial direction of rollers of the lower roller system; (3) the upper roller system is opened to be 3-5 m above the horizontal pressing block through the screw-down motors; (4) a main balance system is subjected to decompression independently, and after a hydraulic cushion is kept in a pressurizing state, four couplings are disengaged; (5) four screw-down screw rods are subjected to manual turning separately until manual turning conducted on the four screw-down screw rods cannot be continued, at the moment, the thickness value of the horizontal pressing block is the height value to which the roller gap between the upper roller system and the lower roller system needs to be adjusted; (6) manual turning conducted on the four screw-down screw rods is stopped, and after the main balance system is pressurized, the four couplings are connected; and (7) the horizontal pressing block is taken away, and the whole zero calibration work is finished. According to the eleven-roller straightener roller system zero calibration method, zero calibration can be conducted on the roller gap of a straightener fast and accurately.

The invention relates to a gas measuring device and method. The gas measuring device comprises a measuring gas chamber and a reference gas chamber, wherein the reference gas chamber is used for encapsulating a zero-reference gas; and a circuit on the gas measuring device is symmetrically provided with sensors which correspond to the reference gas chambers. The gas measuring method comprises the step of automatically carrying out regular zero calibration by utilizing a zero-reference signal acquired by the sensor arranged corresponding to the reference gas chamber. The gas measuring device and method does not need to carry out the regular zero calibration based on an externally input zero-reference gas, thereby ensuring that the standard of gas measurement is more accurate and then ensuring the accuracy of the gas measurement.

The invention relates to a magnetostrictive displacement sensing flowmeter. The magnetostrictive displacement sensing flowmeter comprises a sensor electronic bin, a transitional joint, a groove cover, an overflow groove, a metering barrel, a valve block, a damping washer, a straight joint, a measuring wave guide tube and a magnetic ring buoy. The magnetic ring buoy is driven to move in the up-down direction by change of the liquid level of leakage oil, a magnetostrictive effect of a magnetostriction material is achieved, the measuring wave guide tube deforms elastically so that a mechanical wave which is expanded towards two sides is generated, the mechanical wave is received by the sensor electronic bin which is connected with the upper end of the measuring wave guide tube and is converted into an electric signal, and the volume flow of the leakage oil is calculated by comparison and conversion. Owing to the magnetostrictive effect, the magnetostriction property of the magnetostrictive displacement sensing flowmeter is not changed along with time. The magnetostrictive displacement sensing flowmeter has the advantages of high stability, high reliability, high response speed, high resolution precision, non-contact measurement, zero abrasion, long service life and the like. Moreover, the magnetostrictive displacement sensing flowmeter is particularly suitable for measuring micro flow.

The invention provides a layered extraction sampling device box for filterable waste water online monitoring. The layered extraction sampling device box comprises a sampling tube, wherein the inner wall of the sampling tube is fixedly provided with a first clamping groove in the length direction; a gear plate is arranged in the first clamping groove in a clamped way. In the use process, when the tail part of a ratchet plate is pressed, the ratchet plate is disengaged from a regulating gear; the regulating gear can vertically slide through being clamped by a second clamping groove; sampling cups are driven to vertically slide; the positions of the sampling cups can be freely regulated; when the tail part of the ratchet plate is released, the head part of the ratchet plate clamps the regulating gear; the positions of the sampling cups are fixed; the sampling tubes slowly extend into waste water; pressure is exerted onto a pressing device; a traction rope contracts; a tube cover is opened; the waste water in each layer enters each of the installed sampling cup; the pressing device is released; the tube cover is closed; the continuous entering of the waste water is prevented; the sampling tube is lifted up; a rubber plug arranged at the lower part of the sampling tube is opened; the sample is collected and is put into an on-line monitoring analysis instrument for analysis.

The invention provides a motor vehicle exhaust telemetering system, and belongs to atmospheric pollution source monitoring equipment. The problems that tail gas of an existing motor vehicle is difficult to monitor, the detection range of the monitoring equipment is small, arrangement is troublesome, and debugging is complicated are solved. The motor vehicle exhaust telemetering system is providedwith a laser emission module and an ultraviolet emission module, data of CH, NO, CO and CO2 can be monitored simultaneously, and the monitoring range is wide; meanwhile, an integrated measuring cell which is constituted by a telemetering host and an optical reflecting unit is adopted as a monitoring point, arrangement is simple, and during debugging, what is needed is to simply debug the optical reflecting unit.

The invention provides a medical thermometer sterilization device, which includes a sterilization chamber, a chamber door is movably connected to the side of the sterilization chamber through hinges, a motor is fixed in a motor cavity, a rotating shaft of the motor runs through the top surface of the motor cavity, and a turntable is arranged on the top of the rotating shaft The lower end of the turntable is movably connected with a thermometer placement rack through a movable rotating shaft, and a disinfectant chamber is arranged on the top surface of the disinfection chamber located at the upper end of the turntable. The micro water pump is connected with a disinfectant pipe, and the outer bottom end of the disinfection bin is provided with a water accumulation cavity. The disinfectant is injected into the disinfectant cavity through a micro water pump, and sprayed out through a high-pressure nozzle. The disinfectant is sprayed onto the thermometer through the leak hole on the turntable, and the thermometer is disinfected. The turntable can be a frame-type structure to improve disinfection The passing rate of the liquid, and the turntable is driven by the motor to rotate, and the thermometer will be zeroed under the action of centrifugal force.

The invention relates to an electronic zero adjust method of optical-electricity shaft encoder in the field of optical-electricity measuring. First designing a electronic zero adjust circuit which comprises a memory storage device, a reset switch, a upper-pulling resistance and a signal chip computer, wherein the memory storage device possesses chip choosing end CS, clock interface SK, writing end DI and output end DO; one end of the reset switch is connected with the earth, the other end is connected with the P1 port; the upper-pulling resistance is positioned on the P1 port, the other end of the upper-pulling resistance is connected with the 5V power; the signal chip machine possesses input / output (I / O) interface P1 to P5, P1 is connected with the resistance end of the reset switch; P2 to P5 are separately connected with the chip choosing end CS, the clock interface SK, the writing end DI and the output end DO; second controlling the electronic zero adjust circuit by the preset electronic zero adjust program to achieve the clear impact.

The invention discloses a push type self-lock adjusting device for a sighting telescope. The push type self-lock adjusting device for the sighting telescope comprises a fixing support, a cover, a rotating shaft, a multi-hole limiting cover, a slider and an adjusting bolt, wherein the slider is arranged inside the fixing support, a square hole is formed in the middle of the slider, the multi-hole limiting cover is connected with the outer side of the upper portion of the fixing support in a threaded mode, the cover is arranged at the upper portion of the multi-hole limiting cover, a hole which is provided with the rotating shaft is formed in the middle of the cover, a hole which is provided with the adjusting bolt is formed in the middle of the rotating shaft, the lower end of the rotating shaft is further in a square shape and extends to the square hole in the middle of the slider, limiting pins are further arranged at the outer side of a spring of the cover, and limiting holes are matched with a plurality of holes in the multi-hole limiting cover. According to the push type self-lock adjusting device for the sighting telescope, a self-locking function is achieved through simple structure, and reliability of the sighting telescope in the use process can be ensured due to the self-locking function.

The invention discloses a high-precision withdrawal and straightening machine roller zero calibration device and method, and the device comprises a main spirit level, a main spirit level and upper roller surface contact precise adjustment mechanism, a level, and a connecting rod. A horizontal rod of the connecting rod is detachably connected with the left end of the main spirit level, and the lower end of a vertical rod of the connecting rod is connected to a bearing seat of a lower roller through an adjustable mechanism, wherein the level is placed on the main spirit level. The method comprises the steps: connecting and fixing the connecting rod and a screw rod; pre-tightening and fixing the main spirit level and the connecting level; precisely adjusting the main spirit level to be horizontal; taking away the level, and enabling the lower roller to slowly rise till a top cover on the main spirit level of the device to contact with the surface of an upper roller, and then stopping the lower roller; observing the rising scale of a water column, reading a value and determining a final zero calibration value; calculating and obtaining the zero calibration data of a pair of rollers, and enabling the zero calibration data to be inputted into a computer. The device and method can achieve the quick, accurate and convenient zero calibration of a roller gap, prolongs the service life of a withdrawal and straightening machine roller, and improves the scale breading effect.

The invention discloses a hand-held laser measuring instrument, which comprises a measuring instrument main body and an attaching plate. The measuring instrument main body is provided with a laser probe, a laser emitter and a laser receiver are arranged on the laser probe, the measuring instrument main body further includes a display screen and a measuring controller, the measuring controller is provided with a timer, and the measuring controller is electrically connected with the laser probe and the display screen; and the attaching plate is provided with an attaching surface and arranged onthe measuring instrument main body, and the attaching surface is perpendicular to a laser beam emitted by the laser emitter. According to the hand-held laser measuring instrument, the attaching surface attaches to the surface to be measured, it is ensured that the emitted laser beam is perpendicular to the surface to be measured, thus obtained measuring data are more accurate, the measuring accuracy is greatly improved, during measuring, measuring personnel attaches the attaching surface to the surface to be measured to ensure the measuring accuracy, so that measuring operation is simpler, themeasuring difficulty is greatly reduced, and stability and reliability of the measuring value are ensured.

The invention discloses a gas detection device and a use method. The gas detection device comprises a test tube, wherein a scale is arranged on the outer side wall of the test tube; an upper end coveris detachably connected to an upper end opening of the test tube, a slight-adjusting rubber plug is connected to the top wall of the upper end cover, the slight-adjusting rubber plug comprises a screw, a rubber plug body is fixed to the exactly lower end of the screw, and an adjustment handle is fixed to the upper end of the screw; and a lower end cover is detachably connected to a lower end opening of the test tube, a U-shaped drain pipe is connected into the left portion of the lower end cover, an inflation pipe is connected into the right portion of the lower end cover, the free end of theinflation pipe is located outside the lower end cover and is used for being connected with a gas outlet pipe of a gas desorption device, and when the lower end cover covers the lower end opening of the test tube, the other end of the drain pipe and the other end of the inflation pipe are both communicated with the bottom of the test tube. The device is convenient to clean, and the initial heightof the water level in the test tube can be conveniently adjusted, that is, zero adjustment is convenient.

The invention provides a titration device with accurate zero adjustment, which comprises a liquid storage bottle, a connecting pipe, control valves, a titration pipe and a titration pipe rack. Because the two control valves are both arranged at the lower end, the operations of liquid replenishment, zero adjustment and titration can be finished by a sitting operator. The titration device with the accurate zero adjustment has the advantages that the accurate zero adjustment can be realized, the liquid level is also kept at the same zero position accurately, the metering is accurate, the cost is saved, the disassembly and the assembly are convenient and quick, and the like. The titration device with the accurate zero adjustment is simple to operate, is convenient and quick and is easy to master; the vision errors are greatly reduced; and hundreds of samples can be titrated by the full liquid storage bottle without replenishing, so that the working efficiency can be enhanced by more than 60 percent, and the labor strength is reduced by more than 80 percent.

The invention discloses a dual-purpose medical device for household eye cleaning and dripping. For the first conduit and the second conduit, the lower ends of both sides inside the device box are fixedly provided with first elastic hollow liquid storage balls, and the upper ends of both sides inside the device box are fixedly provided with second elastic hollow liquid storage balls. The present invention presses the first pressure plate with fingers, sprays the sterile saline solution from the first conduit to clean the eyes, and lightly presses the second pressure plate to drip the eye drops from the first conduit into the eyes, realizing the ability to drop eye drops immediately after cleaning the eyes The function of eye drops can adjust the pressing force through personal feeling, thereby adjusting the liquid volume, improving the effect of washing drops, and improving the safety of cleaning drops through the protective effect of the cone-shaped eye mask tube.

The invention discloses an engine cylinder hole seal groove diameter gauge. The engine cylinder hole seal groove diameter gauge comprises a gauge main body 1, a cam adjusting mechanism 2, a connecting rod mechanism 3, a measuring rod mechanism 4, a bearer 5 and a dial gauge 6. The top of the gauge main body 1 is provided with an upper mounting disc 11, the bearer 5 is fixedly installed on the upper mounting disc 11, the dial gauge 6 and the cam adjusting mechanism 2 are installed on the bearer 5, a lower mounting disc 7 is welded on the bottom of the gauge main body 1, the lower mounting disc 7 is provided with a mounting groove 71 arranged in the horizontal direction, the measuring rod mechanism 4 is movably installed in the mounting groove 71, two ends of the connecting rod mechanism 3 are respectively connected with the upper mounting disc 11 and the lower mounting disc 7 in a rotatable manner, and the dial gauge 6 is connected with the measuring rod mechanism 4 through the connecting rod mechanism 3. The engine cylinder hole seal groove diameter gauge is used for detecting the engine cylinder hole seal groove diameter, and is advantaged by being simple in structure, low in manufacture cost, convenient to operate and high in measuring precision.

A metal detector has a large primary transmit coil, a small primary feedback bucking coil, a first receive coil, and a second receive coil. A variable resistance device is connected to the first and second receive coils. A voltage source is connected to the large primary transmit coil. The voltage source is oppositely connected to the small primary feedback bucking coil. A primary voltage is provided to the large primary transmit coil. A reverse primary voltage is provided to the small primary feedback bucking coil. The small primary feedback bucking coil is positioned near the first and the second receive coils. The metal detection methods and apparatus sums up the signals from the two secondary coils. One is over nulled, the other is under nulled. They are close enough to an inductive null to attenuate the stray coupled signals from the primary driving signal and detecting the object.

The invention discloses a filter which comprises a filter body embedded in a wall, the filter body comprises an air inlet box section, a first-stage filter box section, an aerosol injection section, a second-stage filter box section and an air outlet box section which are sequentially connected from bottom to top, and the aerosol injection section is provided with a first aerosol dust generating pipe used for injecting aerosol particles; the air outlet box section is provided with an air outlet, and a sealing valve plate device is installed on the air outlet and used for sealing or opening the air outlet; a filter element module, a pressing mechanism for pressing the filter element module and a point-by-point scanning leak detection mechanism positioned at the downstream of the filter element module are mounted in each of the first-stage filter box section and the second-stage filter box section; and the point-by-point scanning leak detection mechanism is used for performing point-by-point scanning detection on aerosol particles injected into the upstream of the respective filter element module. The filter has the advantages of multiple functions, high safety level, double filtering effect and reliable air tightness.

The invention discloses a sickbed lifting angle measuring device convenient for reading. The sickbed lifting angle measuring device comprises a fixed plate, a movable plate, a pointer, a lifting mechanism, a lifting plate, an angle indicating dial and a fixing piece, wherein the movable plate is rotatably mounted on the fixed plate, the angle indicating dial is fixed on the fixed plate, and the center of the angle indicating dial is positioned on the rotating axis of the movable plate; the middle part of the pointer is rotatably mounted on the angle indicating dial; the rotating axis of the pointer coincides with the rotating axis of the movable plate, one end of the pointer extends to the scale line of the angle indicating dial, and the other end of the pointer is fixed on the lifting plate through the fixing piece; and the lifting mechanism is arranged between the movable plate and the lifting plate and is used for driving the lifting plate to move close to or away from the pointer.The sickbed lifting angle measuring device convenient for reading provided by the invention is simple in structure, the pointer is convenient to zero, and the measurement precision is improved.

The invention provides a stable type air filter support which comprises an air filter support body. An insertion opening is formed in the middle portion of the surface of the upper end of an air filter support shell, a filter element barrel body is movably inserted into the insertion opening, a filter element base plate is movably clamped in a limiting check ring, and a plurality of filter element supporting rods are fixedly connected with the surface of the lower end of a filter element air inlet pipe through a connecting block; and an annular limiting groove is formed in the outer side end of the upper surface of the air filter support shell, a clamping ring is connected into the annular limiting groove in a thread fit manner, and the clamping ring is fixedly connected to the surface of the outer side of the air filter support shell through screws on a protruding plate. According to the stable type air filter support, structures of the filter element barrel body are reduced, the production cost is saved, the filter element barrel body is clamped into the insertion opening, the filter element barrel body can be stably clamped to the bottom surface of the upper end of the clamping ring through the two screws, leakproofness of the filter element barrel body and the air filter support shell is improved, and silt cannot enter the air filter shell.

The invention provides an oil pan for frying food, which comprises an oil pan body, a protruding heating column and a heating sheet installed on the lower surface of the oil pan body, and a plurality of groups of vertical plates are uniformly and fixedly installed on the upper surface of the semicircular heating pan. The top of the board is movably inserted with a slide plate, and the surface of one side of the slide plate is uniformly provided with multiple sets of inclined card slots horizontally. The upper surface of the right side of the semicircular heating pot is fixed with a fixed base, and the inner surface of the top of the placement plate is provided with a transparent baffle. The transparent baffle is horizontally fixedly installed on the inner surface of the upper end of the placement plate. The lower surface of the oil pan body of the present invention is evenly equipped with six sets of heating chips, and the protruding heating column in the middle of the bottom surface of the oil pan body is also equipped with heating chips, so that the edible oil in the oil pan body can be heated quickly and evenly, and the food can be skewered The end of the bamboo stick is stuck in the inclined slot, so that the hot oil will not touch the end of the bamboo stick. During the frying process, the transparent baffle can prevent the hot oil from splashing.

The invention discloses equipment for measuring a brake lever. The equipment for measuring the brake lever comprises a base plate, and a linear bearing which is fixed on one side of the base plate; the linear bearing is provided with a measuring scale; the equipment for measuring the brake lever is characterized in that: a hole is formed on the other side of the base plate relative to the linear bearing, and a fixing sleeve is arranged on the hole; a positioning column is arranged between the linear bearing and the fixing sleeve; an L line is marked on the base plate near the linear bearing; and when a measuring head of the measuring scale is aligned with the L line, the indication on the measuring scale is 0.00mm. The invention also discloses a method for measuring the brake lever by using the equipment for measuring the brake lever; and by the design of the technical scheme, brake levers with different shapes can be efficiently and accurately positioned and measured.

The invention relates to an underwater wellhead dip angle indicating device. The underwater wellhead dip angle indicating device comprises a base, an angle indicator and a dial, wherein a groove is formed in the base, and the base is installed on the outer surface of an underwater wellhead through a supporting frame or directly welded to the outer surface of the underwater wellhead; the angle indicator is arranged in the groove and comprises a transparent cylinder, an indicating bead and a spring, a side end cover and a spring end cover are correspondingly and detachably installed at the two ends of the transparent cylinder, the first end of the spring is connected with the spring end cover, the second end of the spring is a free end and can perform telescopic motion in the transparent cylinder, the indicating bead is contained in a cavity of the transparent cylinder, the indicating bead is fixedly connected with the second end of the spring, and the transparent cylinder is filled with a lubricant; and the dial is arranged above the angle indicator in a covering mode, and the dial is detachably installed on the base. The underwater wellhead dip angle indicating device can accurately read dip angles of the underwater wellhead equipment in the transverse direction and the longitudinal direction.