119results about How to "Avoid the impact of test results" patented technology

The invention provides a large-aperture ultra-smooth surface defect detection device and method. The device mainly comprises a laser device, a laser beam expanding system, a high-reflectivity mirror, a polarizer, a polarization splitting prism, a 1 / 4 wave plate, a rotary prism, a telecentric field lens, a high-angle-scattering light detector, a low-angle-scattering light detector, a line triggering detector, a reflection light detector, a precise display platform and a computer. Detection efficiency of a large-aperture optical element can be remarkably improved, and the situation that detection results are severely influenced by vibration, axial jumping and the like, caused by high-speed rotation, of the large-aperture optical element is avoided. Surface defects can be classified, and it can be recognized whether the detected defects are pits, scratches, protruding dust, fibers and the like.

The invention provides a microfluidic chip and a single cell protein quantitative detection device and method. The chip is composed of a PDMS (Polydimethylsiloxane) layer and a quartz layer; a microfluidic chip technology is combined with a liquid drop formation technology, a fluorescence antibody preparation technology and a fluorescence detection technology and then high-throughput quantitative detection of proteins in single cells is realized; reliable device and method are provided for characterization of cell biological characteristics. By designing and manufacturing a fluorescence antibody pair and setting an optical filter, the detection precision can be effectively improved and detection errors are reduced. Equipment including an inverted fluorescent microscope, a photomultiplier and the like can be used in a traditional biological laboratory, so that the device and the method have strong adaptability and high portability and are convenient to realize.

The invention discloses an optical cable surface defect detection device and a detection method for detecting surface defects of an optical cable through the optical cable surface defect detection device. The optical cable defect detection device comprises a lifting support, wherein a detection cavity with a cylindrical structure is arranged in the lifting support, and three cameras and a light source which are uniformly distributed on the circumference are arranged in the detection cavity; and an encoder, an industrial personal computer, the cameras and a counting module are all connected toa special power supply and a device main switch. The optical cable defect detection method comprises the steps S1-S5. Images shot by the optical cable defect detection device are clear, and the difficulty of post-processing pictures can be effectively reduced; the optical cable defect detection device can acquire detailed information of the defects of the optical cable in real time, so that the production efficiency of enterprises is improved; through the detection method, a detection effect is more accurate and faster, and the device and the method can be directly used in an optical cable production linkage system.

The invention relates to an in-situ detection device for the chlorophyll concentration of water and a detection method of the in-situ detection device. The in-situ detection device and the detection method aim at solving the problems that in an existing device, the excitation light path can be not adjusted, the fluorescence intensity is low, and the fluorescence detection accuracy and sensitivity are low due to scattering generated when water contains lots of impurities. A water sample chamber water inlet device is arranged at the bottom of a quartz water sample chamber, a stainless steel shell is arranged outside the quartz water sample chamber, a detector, a light filter and a focusing lens are arranged over the quartz water sample chamber, a light source, a light source transverse adjustment support, a light source transverse adjustment mechanism and a light source direction adjustment mechanism are arranged on the side face of the quartz water sample chamber, and the detector, the light source, the light source transverse adjustment mechanism and a light source incidence angle adjustment mechanism are connected with a host through wires. The method includes the steps that water background fluorescence signals measured under the off-state of the excitation light source are collected, then water fluorescence signals under the on-state of the excitation light source are collected, and background fluorescence interference is automatically subtracted through operation.

The invention relates to a gas monitoring probe and a gas monitoring system. The gas monitoring probe comprises a sampling inner cavity, the sampling inner cavity is provided with a purging air inlet and an exhaust air outlet, the purging air inlet is used for conducting purging cleaning on the sampling inner cavity, and the exhaust air outlet is used for exhausting gas in the sampling inner cavity. The gas monitoring system comprises the gas monitoring probe, the purging air inlet is connected with a purging pipeline, and the exhaust air outlet is connected with an exhaust pipeline. The sampling inner cavity is subjected to purging cleaning through the purging air inlet, then the gas in the sampling inner cavity can be exhausted in time through the exhaust air outlet, dust and impurities generated in the sampling inner cavity due to accumulation for a long time are effectively cleaned, the dust and impurities can be discharged thoroughly, the cleanliness of the sampling inner cavity is guaranteed, and the influence on testing results and errors are avoided.

The invention discloses a quality detecting device for bottle body plug adding, which comprises a first detecting assembly, a waste removing assembly and a bottle body conveying assembly. The first detecting assembly and the waste removing assembly are sequentially arranged along the bottle conveying direction of the bottle body conveying assembly, the first detecting assembly comprises a light source emitter and a light source receiver which are oppositely arranged on two sides of the bottle bodies to be detected on the bottle body conveying assembly. The quality detecting device for bottle body plug adding can detect and remove bottle bodies with unqualified plugs, improves ex-factory pass rate of finished products, and has the advantages of being simple in structure, easy to achieve, high in detection precision and the like. For the bottle bodies needing to be conveyed into a cover rolling machine for cover rolling after plug adding, influence on cover rolling operation caused by unqualified bottle body plug adding further can be avoided.

The present invention provides a leak checking device prior to lithium battery liquid injection. The leak checking device comprises a cavity, a battery location module, a leak checking cylinder module, a seal cylinder module, a helium source, a helium flexible pipe, a compressed air source, a helium detector and a vacuum pump. The leak checking device employs the cavity and a seal cap to form an openable seal negative pressure environment so as to rust into little helium to the internal portion of the battery in the negative pressure environment and determine whether the battery leaks or not through detection of the helium component in the cavity.

The invention discloses a sampling detection device for food processing. The device comprises a processing tank, one side of the processing tank is provided with a ]-shaped fixing frame, the inner side of the ]-shaped fixing frame is provided with a sampling mechanism, and the sampling mechanism comprises a quantitative sampling assembly, a collection bottle conversion assembly and a leakage-proof assembly; the quantitative sampling assembly comprises a piston cylinder which is horizontally fixed to the top end in the ]-shaped fixing frame through a connecting column, and one end of the piston cylinder is provided with a sampling pipe and a sample discharging pipe. A reciprocating driving part drives a reciprocating rod to reciprocate left and right, then a first piston is driven to reciprocate left and right in the piston cylinder, when the first piston moves rightwards, liquid food in the processing tank can be sucked into the piston cylinder through the sampling pipe, when the first piston moves leftwards, liquid food in the piston cylinder can be discharged into a sampling bottle through the sample discharging pipe, the liquid food can be continuously and quantitatively sampled for multiple times, and the device is convenient to use.

The invention provides a blood type detection quality control product, a preparation method thereof, and application thereof to blood type detection. The blood type detection quality control product comprises 6 bottles of ABO, an RhD blood type detection quality control product, 5 bottles of cross-matching blood quality control products and 4 bottles of irregular antibody sieving test quality control products. The blood type detection quality control product can guarantee accuracy, specificity, affinity and stability of blood type detection, avoids influence on the detection result caused by unqualified detection in the detection process, and creates conditions for accuracy of ABO blood type determination, cross-matching blood and irregular antibody screening.

The invention relates to the technical field of photographic equipment for the Internet. and discloses an outdoor self-erasing camera for mobile internet. The camera comprises a photography body. Anintermittent structure is connected to the interior of a movable frame; a first metal ball is connected to the left end of a fixing rod, an expansion strip is connected to the right end of a connecting rod, a cable is arranged on the outer side of a wire coil, a metal sheet corresponding to the first metal ball is arranged in the photographing body, a water bag is connected to the lower end of tahose, a second metal ball is arranged on the upper portion of the supporting sliding block, and a variable resistor is arranged on the right portion of the photographing body. A sliding rod is pushedto move rightwards through the upper end of an expansion strip; rainwater flows into the water bag through a conical groove and the hose. A supporting sliding block drives the second metal ball to slide on the variable resistor, the size of the rainwater can be indirectly detected through the weight of the water bag, and therefore the output size of the driving shaft is changed, and the structuresolves the problem that an existing internet camera cannot automatically adjust, clean and output during photographing.

The invention discloses an integrated TMS coil racket for brain function detection and treatment, which comprises a coil shell, wherein an 8-shaped coil is arranged in the coil shell, and two waist-shaped bosses are arranged on the coil shell and used for limiting the position of the coil; the coil shell is provided with 8 mounting holes, and the mounting holes are internally provided with opticalfiber seats for mounting optical fiber probes; a silica gel skin is arranged inside the coil shell and used for limiting the movement of the optical fiber seat; the outgoing line of the coil penetrates through the bottom of the coil shell to be connected with the transcranial magnetic stimulation instrument; and the signal end of the optical fiber probe is connected with the near-infrared brain function imager. The invention installs the fiber probe on the TMS coil, detects the treatment effect in real time through the near-infrared brain function imager, and adjusts the stimulation parameterof the TMS coil according to the treatment effect, thereby achieving the optimal treatment effect.

The invention relates to a method for measuring the material level of a storage tank in the production of trichlorosilane, which belongs to the production field of halogenated silicane. The invention solves the technical problem of providing the method for measuring the material level of the storage tank in the production of the trichlorosilane, and the method is free from the interference of floating dust. The method for measuring the material level of the storage tank in the production of the trichlorosilane measures the material level of the storage tank which is connected with a pipeline, and calculates the material level L of a material in the storage tank according to a formula L=m / (Sp) by measuring the total mass m of the storage tank and the material in the storage tank, wherein S is the cross-section area of the storage tank, and p is the stacking density of the material. The method can avoid the influence of the floating dust on a detection result, can measure the material level of the material in the storage tank more accurately, is beneficial to replenishing silicon powder or eliminating silicon dust in time, can effectively reduce the generation of production accidents and has extensive application prospect.

The invention provides a waste gas intelligent detecting and processing device of a printing and dyeing industry, and relates to the technical field of the waste gas detection. The waste gas intelligent detecting and processing device of the printing and dyeing industry comprises an air collecting cylinder. One side of the air collecting cylinder is connected with a locking block. One side of the locking block at the external part of the air collecting cylinder is fixedly provided with a pre-filtering device by a fixing block. The pre-filtering device comprises a filtering frame. Two sides of the inner wall of the filtering frame are fixedly provided with locking bases. A filtering plate is connected between two locking bases. The waste gas intelligent detecting and processing device of the printing and dyeing industry is capable of, through the coordination of a first reagent bottle, acid containing liquid, a second reagent bottle, alkaline liquid, a third reagent bottle, neutral liquid, a fourth reagent bottle, water, an air valve, a liquid valve and a detection box, enabling people to simultaneously collect the reagents of the different samples for detecting, avoiding the troubles caused by frequently replacing the reagent bottles by the people in the waste gas detection process, and greatly improving the efficiency of the waste gas detection. In addition, through the coordination of the different reagents, the accuracy of the detection is higher.

The invention relates to the technical field of processing of bean products, and specifically discloses a detection method for heavy metal content in bean product raw materials. The detection method comprises the following steps: performing crushing: taking 100 g of samples, and grinding the taken samples into sample powder for standby application; preparing a sample liquid: adding 2 L of clean water to sample mixing equipment, thoroughly mixing the sample powder with the clean water to obtain the sample liquid, and performing heating for 1 h to obtain a high-concentration sample liquid; decomposing the samples: preparing decomposing liquid, pouring the prepared decomposing liquid into a beaker, and heating the beaker for 2 h so as to obtain decomposed samples; performing detection: addinga hydrochloric acid liquid to the decomposed samples, adding clean water for settling volume, and detecting the samples through a heavy metal detector, so that the content of heavy metal in the samples can be determined. Through the adoption of the detection method disclosed by the invention, the problem of massive foaming in the decomposing course can be solved.

The invention discloses an air dust monitoring method for environmental supervision. A detection box is included, the top of the detection box is fixedly connected with an air duct, and the top of theair duct is fixedly connected with an air inlet bin. The invention discloses the air dust monitoring method for environmental supervision. Air is sucked and dried through an air suction and drying device; the influence of water vapor on a detection result is avoided; meanwhile, the air temperature is increased, so that air and dust are more active; under the action of an air suction impeller andan exhaust fan, the flowing speed of the air is increased; therefore, the dust is prevented from being attached to a laser emitter and a laser induction plate to influence subsequent detection results, and the cleaning frequency is reduced to prolong the service life of a detection device. Meanwhile, a baffle, a dust collection groove, an electrostatic dust collection plate and other structures are matched to remove the dust in exhausted air, the dust is prevented from returning to the external environment again, and a dust removal structure is simple in structure, convenient to use and good in effect.

The invention discloses an underground carbon monoxide detection alarm device which comprises a fixing mechanism, a detection mechanism is arranged under the fixing mechanism, a flow guide mechanism is fixedly installed in the lower surface of the detection mechanism, and an air inlet mechanism is arranged in the outer surface of the flow guide mechanism. According to the underground carbon monoxide detection alarm device, the air inlet mechanism and the flow guide mechanism are arranged to monitor the quantity of solid particles and water vapor on the No.1 filter screen and the dehumidification film in real time; excessive solid particles and water vapor are shaken off in time; solid particles and water vapor are prevented from blocking the air inlet; the problems that much solid particles and water vapor under a mine tend to block the air inlet and further detection is inaccurate are solved; the device has certain creativity and practicability, and can effectively reduce the vibration frequency of the detection mechanism through the cooperative use of the fixing mechanism and the detection mechanism, so as to solve the problems that the vibration is easy to generate during mining, and the service life and the detection precision of the device are influenced by the vibration.

The invention discloses a damage resistance detection device for a screen panel and a power interface of an LED display. The device comprises a machine body, a detection cavity with a forward openingis formed in the machine body, a lifting cavity with a leftward opening is formed in the right end wall of the detection cavity, a gear cavity is formed in the lower side of the lifting cavity, an adsorption cavity with an upward opening is formed in the lower end wall of the detection cavity, and a test cavity with an upward opening is formed in the right side of the adsorption cavity. Accordingto the invention, the display screen and the interface of the LED display can be repeatedly damaged, so that whether the damage resistance of the display screen and the interface of the LED display reaches the standard or not can be detected, the product quality is improved, it can be ensured that the plug insertion mode and the plug insertion depth each time are the same, and the error is reducedas much as possible.

The invention relates to a method for detecting macromolecular substances in a Shengqi Fuzheng injection. The method includes steps of firstly, performing ultrafiltration centrifugal treatment to the Shengqi Fuzheng injection using an ultrafiltration centrifugal method, adding ultrapure water to upper trapped fluid obtained by the ultrafiltration centrifugal treatment, mixing well and centrifuging until a washed out part is negative in a Molish reaction detection, and collecting the upper trapped fluid; secondly, using a BCA (bicinchoninic acid) method and the Molish method to detect the upper trapped fluid obtained by the first step so as to determine whether the macromolecular substances exist in the Shengqi Fuzheng injection or not. The method is simple and common in instruments and materials and in experimental method, low in cost, convenient to use in practical production, provides reference of quality control during manufacturing process of a manufacturer, and further guarantees safety of the Shengqi Fuzheng injection.

The invention discloses a device and a method for detecting quality of seed cotton. The device for detecting the quality of the seed cotton comprises a case, and a photoelectric detection device, a soft light board and a signal processing circuit board which are arranged in the case as well as a display screen, control keys and a communication interface which are arranged on the case, wherein a bottom plate of the case is a light transmission board; the photoelectric detection device is positioned right above the soft light board; the signal processing circuit board comprises an integrated circuit board as well as a micro-processor and a control circuit which are arranged on the integrated circuit board; the photoelectric detection device comprises a circuit board, and a plurality of LED (light emitting diode) light sources and a plurality of color sensors which are mounted on the circuit board; the plurality of color sensors, the display screen, the control keys and the communication interface are all connected with the micro-processor. According to the device and the method disclosed by the invention, colors of the seed cotton are detected to determine the quality of the seed cotton, and technical support is provided for reasonable cotton assorting in processes of purchasing and processing the seed cotton.

The invention discloses a wine bottle liquid level detection system suitable for wine foam left in bottle bodies. The wine bottle liquid level detection system comprises a conveying device, a positiondetecting device, a shooting device, a removing device and an image control processor. The image control processor receives triggering signals and sends shooting instructions to the shooting device.The shooting device conducts shooting, and sends a shot image to the image control processor. The image processor judges whether the liquid level of wine bottles is qualified or not, and if the liquidlevel of the wine bottles is disqualified, a removing instruction is sent to the removing device, and the removing device removes the wine bottles with the disqualified liquid level. The image processor is utilized for detecting whether the position of the boundary of the wine liquid and the wine foam is qualified or not so as to judge whether the liquid level of beer is qualified or not. Due tothe fact that the color difference between the foam and the wine liquid is very large, the boundary between the foam and the wine liquid can be distinguished through the ordinary image, the shooting device only needs to achieve the shooting function, influences on the detection result due to the uneven thickness of the wine bottles are avoided, and the detection result is more accurate.

The invention discloses an FPGA-based digital phase lock amplification processing method with precise automatic frequency tracking. The method comprises a step of preprocessing a detected signal by asignal preprocessing circuit to obtain a discrete signal, a step of performing FFT algorithm processing on the discrete signal to obtain a rough value of a signal frequency, a step of taking the roughvalue as a center frequency and scanning the discrete signal by an FFT phase-locked loop until the frequency synchronization of two orthogonal local reference signals and the detected signal is completed, a step of multiplying the discrete signal by the two local reference signals to obtain a difference frequency term and a sum frequency term, a step of performing low-pass filtering on the difference frequency term and the sum frequency term to filter high-frequency components to obtain DC components, and a step of calculating the two DC components to obtain an amplitude and a phase of the detected signal. According to the method, the DSP Builder is used to design a program, the design of the digital phase lock amplifier is more flexible, the development is easy, an FPGA is used as a processed and a modular peripheral circuit, and so the FPGA can be conveniently applied as a module in a measuring instrument in a specific field.

The invention discloses a down feather component and content detection system which comprises a pretreatment device, an air classification device and a collecting device which are sequentially connected, wherein the pretreatment device comprises a horizontally-placed pretreatment cylinder, and first airflow moves from the interior of the pretreatment cylinder to the outside through ventilation holes; the air classification device comprises a vertically-arranged screening barrel, an electrostatic eliminator arranged at the bottom of the screening barrel and a push plate; the side face of the lower portion of the screening barrel communicates with the pretreatment barrel; a plurality of outlets are formed in the side wall of the screening barrel in the height direction of the screening barrel; down feather is blown into the screening barrel by second airflow to be stable at a certain height; the collecting device comprises a collecting part and an exhaust pipe which communicate with theoutlet; and the third airflow moves along the collecting part and the exhaust pipe in sequence from the screening drum. According to the method, the down feather components are classified and detectedaccording to the weight difference between the down feather components, manual screening is reduced, the workload is reduced, the subjective influence of people is avoided, and data is more objectiveand accurate.

The invention provides a detection reagent for a wading pipe as well as a preparation method and a detection method of the detection reagent, and relates to the technical field of pipe detection. Thedetection reagent comprises the following components: a sodium bicarbonate solution, a calcium chloride solution, a sodium hypochlorite solution and pure water. A tap water environment is simulated through the reagent, so that toxic substances contained in the pipe are extracted and analyzed, and the accuracy of a detection result is improved. In addition, the invention also provides a method forpreparing the detection reagent for the wading pipe. The method comprises the following steps: preparing a sodium hypochlorite solution, preparing a sodium bicarbonate solution, preparing a calcium chloride solution and preparing the detection reagent. The method is simple in process, and the prepared reagent is good in using effect. The invention further provides a detection method of the wadingpipe. The detection method comprises the following steps of pipe treatment, pipe soaking, blank test, soaking liquid collection and detection. The method is simple in process and accurate and reliablein analysis result.

The invention discloses a compression resistance detection device for self-limiting and deviation prevention of concrete, which is mainly composed of a fixed base, a connecting transverse plate and a connecting frame, the top of the fixed base is fixedly connected with the connecting transverse plate, and the outer side of the top of the connecting transverse plate is connected with the connecting frame in a welded mode. A connecting top plate is fixedly connected to the top of the connecting frame, and a hydraulic cylinder is fixedly mounted on the outer wall of the connecting top plate. The device comprises a connecting base welded to the middle of the outer wall of a connecting transverse plate, a detection table is fixedly connected to the outer wall of the top of the connecting base, positioning plates are movably installed on the two sides of the detection table, and traction ropes are installed on the sides of the positioning plates. According to the invention, cement blocks can be automatically centered and limited, the limiting force can be adjusted, rapid detection of multiple groups of cement blocks with the same specification is facilitated, and meanwhile, automatic cleaning of cement chippings is facilitated.

The invention discloses an all-weather PM2.5 concentration real-time detection device based on CCD (charge coupled device) lateral scattering. The device comprises a detection dark box, a laser emitting unit, a light capturing unit and a blowing mechanism, wherein a first cavity and a second cavity which are communicated are formed in the detection dark box, and the first cavity is filled with a moisture absorbing material; the blowing mechanism is communicated with the first cavity of the detection dark box; the second cavity of the detection dark box is communicated with the outside; the light capturing unit comprises a CCD and a processor, the CCD captures and collects laser information and transmits the information to the processor through a data line; the laser emitting unit and the CCD are arranged in the second cavity of the detection dark box, and the optical axis of the CCD is perpendicular to the optical axis of the laser emitting unit. All-weather PM2.5 detection is realizedwith a CCD lateral scattering method, and the influence of moisture is avoided.

The invention relates to a bearing manufacturing physical property detection method. A bearing manufacturing physical performance detection device is used in the method. The bearing manufacturing physical property detection device comprises a workbench, a clamping and fixing mechanism and a detection mechanism, clamping mechanisms are equidistantly mounted at the upper end of the worktable from left to right; a detection mechanism is arranged at the upper end of the workbench; the upper end of the detection mechanism is positioned below the lower end of the clamping mechanism; according to theinvention, the design concept of a multi-station and dual-detection structure is adopted to detect the physical performance of bearing manufacturing; according to the bearing quality screening device, the rotating smoothness of multiple bearings and the quality of the inner surface of the bearing outer ring can be detected at the same time, then the bearing quality screening quality and speed areimproved, and meanwhile, multiple auxiliary clamping and limiting structures are additionally arranged on the basis of the clamping mechanism to reduce the probability of relative rotation between the bearing outer ring and the bearing inner ring.

The invention relates to a skin allergen patch test diagnosis matrix composition and a preparation method thereof. The skin allergen patch test diagnosis matrix composition comprises the following components: a body temperature liquefaction composite matrix, a skin absorption promoter, a buffer solution, an electrolyte maintenance agent and the like. According to the skin allergen patch test diagnosis matrix composition provided by the invention, an allergen detection antigen is mixed with the composition and is coated on a patch test detection point, and the skin allergen patch test diagnosis matrix composition is coated on body surface skin to perform pathogenesis detection and diagnosis on contact allergy. Compared with the prior art, the skin allergen patch test diagnosis matrix composition provided by the invention has the advantages of changing the shortcomings that the traditional patch test adopts Vaseline as a single matrix; the allergen detection antigen is in a liquid state by adoption of the body temperature liquefaction composite matrix technology, therefore the allergen detection antigen is absorbed by the skin more easily; the skin barrier layer structure is changed in combination with the skin absorption promoter, so that the allergen antigen can better permeate; and meanwhile the buffer solution and the electrolyte maintenance agent protect the normal physiological functions of the detected skin tissue cells, and thus the detection result can be truly expressed. The components supplement each other and promote each other to greatly improve the allergen detection speed and detection sensitivity.

The invention discloses a gas tightness detector easy to be observed for production and detection of an engine, which comprises a protective casing, a communication fixing seat, and a slidable drawingplate. The front outer surface of the protective casing is movably mounted with a side pulling cover. The outer surface of the upper end of the side pulling cover is fixedly mounted with an observingwindow. The front outer surface, near the lower portion of the side pulling cover, of the protective casing is fixedly mounted with two sets of fixing pull rings. The non-slip legs are fixedly mounted at four corners of the outer surface of the lower end of the protective casing. A side of the front outer surface, near the observing window, of the protective casing is fixedly mounted with a fixedshutter. Six sets of ventilation slots are equally spaced on the inside of the front portion of the fixed shutter. The gas tightness detector easy to be observed for the production and detection of the engine can make the gas tightness detector has multiple imaging structures, improves measuring precision, avoids misjudgment, saves the labor of the installation and removal operation of measuringcomponents, and improves the sealing performance of a device.

The invention discloses a leakage point detecting device for a liquid container. The leakage point detecting device comprises a suction cup, a conveying pipe, a liquid storing box, a drawing strip, an indication box, a battery, an indication lamp and a pressure sensitive switch. The upper end of the conveying pipe is communicated with the suction cup. The liquid storing box is communicated with the back end of the conveying pipe and made of transparent plastics. The drawing strip penetrates through the top of the liquid storing box, the upper end of the drawing strip is located outside the liquid storing box, and the lower end of the drawing strip is located inside the liquid storing box. The indication box is connected with the lower end of the drawing strip. The battery is arranged in the indication box. The indication lamp is arranged on the outer surface of the indication box and connected with the battery through a wire. The pressure sensitive switch is arranged on the outer surface of the indication box and connected with the wire, and the pressure sensitive switch controls the wire to be conducted when subjected to pressure. By means of the leakage point detecting device, the leakage point of the container can be detected without dismounting the container.