75 results about "Uv detection" patented technology

The invention discloses a multi-parameter water quality detection device and method, and the device comprises a collection front end which is made of a quartz material, is integrated with a UV optical module and an electrochemical module, and is used for collecting optical and electrochemical signals of water quality parameters; the temperature probe is used for measuring the environment temperature in real time and outputting a temperature compensation signal; the detection electrode is used for driving and detecting the total dissolved solids through alternating voltage; the UV detection module comprises a UV emission lamp bead and a UV photosensitive lamp bead, is arranged in the collection front end in a correlation manner and is used for detecting the absorbance of the water sample so as to calculate the chemical oxygen demand and the total organic carbon; and the control mainboard is electrically connected with the temperature probe, the detection electrode and the UV detection module, is internally provided with a temperature compensation algorithm, and is used for processing signals and outputting TDS, COD and TOC parameters. According to the invention, UV optics, electrochemistry and temperature compensation technologies are integrated, the limitation of traditional single-parameter detection is broken through, integrated detection of TDS, COD and TOC multiple parameters is realized, and the problem of synchronous measurement of multiple parameters is solved.

The invention belongs to the technical field of textile detection, and particularly relates to a textile anti-ultraviolet intensity detection device which comprises a detection machine body. The detection machine body is fixedly connected with an anti-ultraviolet detector; side plates are fixedly connected to the upper surface of the detection machine body and located on the two sides of the lower portion of the anti-ultraviolet detector; the two first electric sliding blocks synchronously drive the bottom disc and the top disc to be separated and combined, a textile sample is clamped between the bottom disc and the top disc and conveyed to the output end of the anti-ultraviolet detector for anti-ultraviolet intensity detection, a traditional manual feeding or semi-automatic feeding mode is replaced, the effect of automatic feeding detection is achieved, and the production efficiency is improved. The feeding speed and the anti-ultraviolet intensity detection efficiency are improved, a vacuum pump is used for being matched with four suction cups to conduct vacuum adsorption on a single textile sample, the adsorbed textile sample is driven by a second electric sliding block to slide to a base plate, and the effect of feeding the textile sample is achieved.

A label tape is used for solving the technical problems that a label tape in the prior art cannot detect outdoor ultraviolet intensity and a user cannot wear appropriate protective articles according to the ultraviolet intensity in the background technology, and comprises base cloth, a placing cavity is formed in the base cloth, an ultraviolet detection card is arranged in the placing cavity, and the ultraviolet detection card is arranged in the placing cavity. The inner wall of the placement cavity is provided with two clamping assemblies used for being connected with the ultraviolet detection cards in a clamping mode, the base cloth is provided with connecting cloth, and the connecting cloth is used for shielding the ultraviolet detection cards.

The present invention relates to a method for detecting the color absorption rate during the process of dyeing with a mixture of reactive dyes. During the process of dyeing with two or more reactive dyes, a dye liquor sample is taken at time t, the pH value is adjusted to neutral and diluted, and then detected by the CE-UV method. The peak area of the substance peak of the target substance in the dye liquor sample is measured, and the concentration of the target substance in the dye liquor corresponding to time t during the dyeing process is obtained through calculation. Furthermore, the color absorption rate of each reactive dye corresponding to time t during the dyeing process is obtained. The target substance is a reactive dye or a hydrolysis product of a reactive dye. The peak position of the target substance is determined by the standard addition method. The formula used for calculation is a linear equation, which is obtained by performing CE-UV detection on target substances with different concentrations to obtain an electrophoresis spectrum, and then performing linear fitting on the peak areas of the target substances in the electrophoresis spectrum and the corresponding concentrations. The method of the present invention is simple and can accurately detect the color absorption rate during the process of dyeing with a mixture of reactive dyes.

The present invention belongs to the field of image processing and computer vision, and relates to a fusion target recognition method based on UV disparity detection and YOLOv5. This method fully integrates the improved UV disparity detection and YOLOv5 model, uses the improved UV disparity detection to roughly identify pedestrians and vehicles and non-standard obstacles on the road, inputs the UV detection results into the YOLOv5 deep learning model, and fuses the two results for target recognition to obtain a highly stable and robust detection effect, and the recognition range is not limited to the type of target, thereby realizing the fusion target recognition function of binocular stereo vision. The present invention can efficiently and quickly realize the detection of drivable areas on the road, the detection of non-standard obstacles, and the classification and recognition of targets. It is a fusion target recognition algorithm with high stability and high robustness that combines the advantages of traditional binocular detection and deep learning target detection.

A collar is arranged at the upper end of a sunscreen clothes body, sleeves are arranged on the left side and the right side of the upper portion of the sunscreen clothes body, a stiff material mask and a hat are arranged at the upper end of the collar, a hat brim is arranged on the hat, a zipper and a pocket are arranged on the front face of the sunscreen clothes body, and thumb holes are formed in the lower ends of the sleeves. Ultraviolet detection devices are arranged at the tail ends of the upper parts of the sleeves, the chest and the top end of the hat of the sun-proof clothes body. The ultraviolet induction color-changing coating area in the cloth of the sunscreen clothes body can display different non-lost patterns through the UV photosensitive color-changing powder with different colors, so that the general intensity of ultraviolet rays can be intuitively known conveniently, and the attractiveness and the interestingness are greatly enhanced. The ultraviolet index can be detected during outdoor activities, so that the multi-choice and scientificity of sun protection are improved, the comfort of a wearer is improved, and the practicability is higher.

The utility model relates to the technical field of protein purification, and particularly discloses a portable low-temperature protein purification box which comprises a box body, a control panel is mounted at the top of the box body, a temperature sensor is mounted on the inner wall of the box body, and a sample loading module, a purification module, a detection module and a sample collection module are arranged in the box body. The sample loading module comprises a sample liquid storage device, a buffer liquid storage device and a peristaltic pump which are mounted in the box body, the purification module comprises a chromatographic column connected with the peristaltic pump, and the detection module comprises an ultraviolet detector mounted in the box body. Through the design of the low-temperature control system and the heat preservation layer, protein purification can be carried out in a low-temperature environment, the activity of the protein is effectively maintained, and the problem that the protein is inactivated or even degraded due to the fact that the temperature is too high in a traditional purification method is solved; meanwhile, the influence of long-time low-temperature experiments on the body health of experiment operators is avoided.

The utility model discloses an ultraviolet radiation illuminometer capable of displaying a sunscreen UPF level, and relates to the technical field of illuminometers. A handheld handle is fixedly connected to the front side end of the detection main body frame, an information processing module is arranged on the inner side of the detection main body frame, ultraviolet detection sensors are fixedly connected to the inner walls of the lower sides of the two detection grooves, narrow-band optical filters are arranged at upper ports of the two detection grooves, and fixing mechanisms are arranged at the left end and the right end of the detection main body frame. A double-detection-groove structure is adopted in the device, and a narrow-band optical filter and an ultraviolet detection sensor are arranged. Wherein one is used for detecting UVA / UVB wave bands in an external natural state; the other one is used for detecting the UVA / UVB wave band after the sunscreen to-be-detected material is placed; and the accuracy of UPF detection is ensured through real-time data comparison of the two. The fixing mechanism ensures that the to-be-detected material is tightly attached to the device, and light rays are effectively prevented from entering the space between the to-be-detected material and the narrow-band optical filter below to affect the detection effect.

The utility model discloses an anti-dry-burning fire alarm comprising a pedestal, one side of the pedestal is provided with a sealing frame, one side of the sealing frame is provided with a flame detection port, an ultraviolet detection port and a temperature detection port, the side wall of the sealing frame is provided with an infrared probe, one side of the pedestal is provided with a protection mechanism used for protecting the sealing frame, and the other side of the pedestal is provided with a fire alarm. A sliding frame is arranged on one side of the base, a connecting wire is fixedly connected to one side of the sliding frame, a mounting ring is arranged on one side of the connecting wire, a flow sensor is fixedly connected to the inner side of the mounting ring, a valve switch is arranged on one side of the mounting ring, and a control mechanism used for controlling the valve switch to be switched on and switched off is arranged on the side wall of the mounting ring. According to the utility model, the flame state and the temperature of the gas stove are detected, and the infrared probe is matched to judge whether the gas stove is guarded by a person, so that the dry burning state can be alarmed and warned in an early warning manner through flame alarm, ultraviolet alarm and temperature alarm modes.

The utility model provides a composite carpet manufacturing device with an ultraviolet detection structure, which relates to the field of carpet manufacturing devices, and comprises a vibration cutter cutting machine main body, a displacement component is mounted on the vibration cutter cutting machine main body, a machine head is arranged on the displacement component, and a vibration cutter is mounted on the lower part of the front side of the machine head; and a dust collection mechanism is arranged outside the machine head. By means of the innovative design of the integrated dust suction mechanism, textile dust generated in the cutting process can be sucked in the composite carpet cutting operation process and separated through the filter bag, so that the concentration of the textile dust in the operation environment is effectively reduced, the risk that workers suck the textile dust is reduced, and the body health of operators is practically guaranteed; the problems that spinning dust can be generated in the composite carpet cutting process of an existing vibration cutter cutting machine, the spinning dust floats in air and is easily inhaled by workers, and the health of the workers is affected are solved.

The invention relates to the technical field of ultraviolet detection, and discloses an ultraviolet intensity detection device, which comprises a first ultraviolet lamp arranged on a ceiling and a second ultraviolet lamp arranged on a disinfection lamp vehicle, and comprises a box body in which a mounting area is arranged; the four piston pushing and jacking assemblies are arranged at the four corners in the mounting area of the box body correspondingly. The detection box is arranged at the displacement end of the piston pushing and jacking assembly, a clamping groove is formed in the surface of the detection box, and a detection card used for detecting the first ultraviolet lamp and the second ultraviolet lamp is arranged in the clamping groove; one end of the fixing support is arranged on the ground, the other end of the fixing support is connected with the box body, the fixing support has two forms, one form can align the detection card to the first ultraviolet lamp, and the other form can align the detection card to the second ultraviolet lamp. The invention aims to provide the ultraviolet intensity detection device which is more convenient, efficient and accurate.

An ultraviolet detection device comprises an ultraviolet detection tube having a container in which a discharge gas is enclosed, a pair of electrodes arranged in the container, and at least two excitation sections, each electrically connected to the pair of electrodes and extending along a predetermined direction to an outside of the container; a printed circuit board provided with an operating circuit for operating the ultraviolet detection tube; and a housing accommodating the ultraviolet detection tube and the printed circuit board, and having a light introduction section through which light incident on the ultraviolet detection tube is introduced.The circuit board is attached to the housing, and the ultraviolet detection tube is held on one side in the predetermined direction by the housing and on the other side in the predetermined direction by the excitation sections of the circuit board.

The invention discloses a method for simultaneously determining various effective components in callicarpa nudiflora through UPLC-UV (Ultra Performance Liquid Chromatography-Ultraviolet). The method comprises the following steps: (1) preparing a reference substance solution; (2) preparing a test solution; and (3) carrying out UPLC-UV detection. The method is easy and convenient to operate, high in sensitivity, good in precision and good in reproducibility, and the quality stability and the clinical curative effect of the callicarpa nudiflora and the product can be guaranteed.

The invention relates to an ultraviolet detection method and device, electronic equipment and a medium. The ultraviolet detection method comprises the following steps: acquiring ambient light information detected by a light sensor; determining ultraviolet intensity information according to the ambient light information and a preset relationship; wherein the preset relation is used for representing the relation between the ambient light and the ultraviolet intensity. As the light sensor is low in power consumption, the power consumption of the electronic equipment is reduced by detecting the ultraviolet intensity through the light sensor. Meanwhile, as the light sensor is arranged in the electronic equipment, the detection of the ultraviolet intensity can be realized without adding extra devices, so that the cost of the electronic equipment and the complexity of the structure of the electronic equipment are reduced.

This invention discloses a water quality sensor, relating to the field of water quality detection technology. It includes a mounting box containing a temperature detection component and an ultraviolet (UV) detection component. A controller is mounted on the outside of the mounting box, and a temperature compensation module is installed inside the controller. The temperature detection component includes a vertical tube, with a temperature sensor fixed to the outside of the vertical tube, and the sensor's detection end located inside the vertical tube. The UV detection component includes a transparent shell, and the vertical tube is connected to the transparent shell. This invention incorporates a temperature compensation module that collects the power of a UV lamp irradiating a sample water at a temperature of T+0.5 (where T is an integer) while maintaining constant transmittance. The collected data is input into the controller. When the temperature detected by the temperature sensor is n, the maximum integer value of n is taken, thus ensuring the UV lamp power reaches the UV lamp power at temperature [n]+0.5, thereby guaranteeing the accuracy of UV lamp detection.

The invention discloses a dynamic monitoring chromatographic column with a built-in phased array ultrasonic detection and ultraviolet detection module capable of automatically ascending and descending, which comprises a chromatographic column body filled with a filler, a hollow short shaft is arranged in the chromatographic column body, a long shaft is arranged in the hollow short shaft, the long shaft extends out of the hollow short shaft into the resin filler, and the long shaft is connected with the chromatographic column body. A liquid inlet distributor is mounted on the outer surface of the hollow short shaft, phased array ultrasonic detectors are mounted on the liquid inlet distributor, a plurality of flexible phased array ultrasonic detectors are uniformly arranged on the outer surface of the chromatographic column body along the height direction of the chromatographic column body, an eluent ultraviolet (UV) detection module is arranged at the end part of the long shaft, and an automatic lifting ultrasonic detection module is arranged at the top end of the chromatographic column body. According to the invention, the filler distribution in the axial direction and the radial direction of the chromatographic column is monitored in real time, and a phased array ultrasonic imaging technology and a fusion technology of axial imaging along the chromatographic column and radial imaging at different axial heights are combined to superpose the three-dimensional imaging of the filler in the whole chromatographic column, so that the filling uniformity of the chromatographic filler is more accurately judged.

The utility model provides an environment-friendly solar radiation automatic tracking and monitoring device, which belongs to the technical field of solar radiation monitoring and comprises a base, a tracking and monitoring component is arranged at the top of the base, a rotating component is arranged on the base, and a lifting component is arranged at the bottom of the rotating component. The tracking and monitoring assembly, the rotating assembly and the lifting assembly are arranged, during use, ultraviolet rays emitted by the sun are detected through an ultraviolet detector, the direction of the sun is positioned and tracked through the ultraviolet rays, and then two first hydraulic rods are started through a controller to incline a bearing plate; and meanwhile, a motor is started, a second bevel gear is driven to rotate, a first bevel gear is driven to rotate, and a base can be driven to rotate, so that the direction of the solar radiation monitor is changed, and the solar radiation is conveniently tracked.

The invention discloses a method for detecting the content of aluminum in a calcium gluconate and sodium chloride injection, which comprises the following steps of: heating and concentrating 200ml of calcium gluconate and sodium chloride injection, and carrying out pre-treatment of ignition ashing or wet digestion or microwave digestion on concentrate; then taking the pretreated sample and a 1% 3-amino-5-hydroxypyrazole derivative agent solution, and carrying out a derivative reaction in an aqueous solution system containing an acetic acid-ammonium acetate buffer solution (pH 4.5) for about 15 minutes; finally, a ZORBAXEclipse Plus (C18) (250 * 4.6 mm, 5 [mu] m) chromatographic column is used, a mixed solution of methanol and a 0.1% formic acid aqueous solution containing 10 mM ammonium acetate (40: 60) is used as a mobile phase, and a high performance chromatography-ultraviolet detection method is carried out under the detection wavelength of 254 nm. The detection method has the advantages of high sensitivity, almost no detection interference, good accuracy, stable formed aluminum derivative, no high-toxicity reagent in the test process, short analysis time and the like, and can effectively overcome the defects in the prior art. The aluminum in the calcium gluconate and sodium chloride injection can be effectively controlled, and the quality of the calcium gluconate and sodium chloride injection is well ensured.

The utility model provides a partial discharge monitoring system for a switch cabinet, which belongs to the technical field of electronic circuits and comprises a master control module, a mobile communication module, a power supply module, a temperature and humidity detection module, an ultrasonic detection module and an ultraviolet detection module. The power supply module is respectively connected with the main control module, the mobile communication module, the temperature and humidity detection module, the ultrasonic detection module and the ultraviolet detection module for power supply, and the temperature and humidity detection module, the ultrasonic detection module and the ultraviolet detection module are all connected with the main control module; the ultraviolet module is used for capturing ultraviolet rays generated by partial discharge. The ultraviolet detection module is used for detecting ultraviolet rays generated by partial discharge, the ultrasonic detection module is combined to collect partial discharge analog quantity data to accurately and reliably detect the partial discharge phenomenon, meanwhile, the mobile communication module sends the data monitored and collected by the device to a cloud server, and remote monitoring and remote upgrading are achieved. And the later maintenance cost and time are reduced.

The utility model relates to the technical field of glue spreading equipment, in particular to semi-automatic glue spreading detection equipment. The two sets of conveying rollers are arranged side by side, the conveying directions of the two sets of conveying rollers are opposite, and the two sets of conveying rollers, the first workbench and the second workbench are annularly arranged together, so that the whole structure is more compact; the plasma device is arranged above the group of conveying rollers and is used for carrying out modification treatment on the surfaces of the passing injection molding parts; the compression roller device is arranged above the other group of conveying rollers and is used for carrying out pressure treatment on the injection molding part subjected to glue distribution treatment and release material attachment; and the ultraviolet detection device is arranged at the discharging end of the compression roller device and is used for carrying out glue distribution uniformity detection on the surface of the injection molding part subjected to pressure treatment. By means of the structure, before glue distribution and release material attaching are conducted on the injection molding part, modification treatment is conducted firstly, then pressure applying treatment is conducted, the gluing uniformity between the glue distribution and the release material is improved, the glue distribution condition can be shown when the ultraviolet detection device is used for irradiation, and the uniformity can be visually judged.

The polythiol composition comprises a polythiol compound A, a polythiol compound B, a polythiol compound C, a polythiol compound D, a polythiol compound E and a polythiol compound E, and the polythiol compound A is 4-mercaptomethyl-1, 8-dimercapto-3, 6-dithiaoctane; and a compound B1 which has a retention time of 65-75 minutes as determined by high performance liquid chromatography using measurement condition A, and in which the peak area of the compound B1 as determined by high performance liquid chromatography is 1.30 or less with respect to the peak area 100 of the polythiol compound A. Measurement conditions A: the column is ODS-A, the mobile phase is a mixed solution of acetonitrile / 0.01 mol / L-potassium dihydrogen phosphate aqueous solution = 60 / 40 (vol / vol), the measurement solution is a mixed solution of 160 mg of a polythiol composition and 10 mL of acetonitrile, the detector is an ultraviolet detector having a measurement wavelength of 230 nm, the column temperature is 40 DEG C, the flow rate is 1.0 mL / min, and the injection amount is 2 [mu] L.

The invention relates to an electronic control device. The electronic control device may include a printed circuit board on which an electrical circuit is mounted, a power connector disposed on the printed circuit board and electrically connected to an external power source, a power circuit configured to receive external power through the power connector and supply power to the electrical circuit, an ultraviolet sensor mounted on the printed circuit board and configured to detect ultraviolet light and output an ultraviolet detection signal corresponding to the detection of the ultraviolet light, and a processor configured to block power supply to at least a portion of the electrical circuit in response to the ultraviolet detection signal from the ultraviolet sensor.

The present application belongs to the technical field of detection, and relates to a method for separating multiple target objects in a CE-UV detection process and application, wherein the multiple target objects are two or more of SES-RO107, VS-RO107, HES-RO107, SES-RY201, VS-RY201 and HES-RY201, and the method for separating multiple target objects in a CE-UV detection process is as follows: controlling the type and concentration of an additive in a background electrolyte, a separation voltage, an injection time, the type and concentration of a buffer substance in the background electrolyte, and the pH value of the background electrolyte; and the application is as follows: when the concentration of multiple target objects is detected in a reactive dye color matching process, the method described above is adopted. The method is simple, and can separate reactive dyes with similar structures.

The invention discloses a photochromic fluorescent carbon dot as well as a preparation method and application thereof, and the preparation method comprises the following steps: step 1, adding carbonate into N, N-dimethylformamide, and uniformly mixing and stirring; 2, adding 1, 4, 5, 8-naphthalene tetracarboxylic anhydride, and continuously stirring to obtain a mixed solution; and 3, placing the mixed solution in an oven at 160-200 DEG C for pyrolysis for 5-10 hours to obtain the photochromic fluorescent carbon dot material. The photochromic fluorescent carbon dot material is obtained through a one-step pyrolysis method, and compared with the prior art, the preparation method is short in preparation time, simple in process, free of aftertreatment and low in production cost. And the prepared photochromic fluorescent material also has the advantages of obvious fluorescence color change, large fluorescence range span and good reversibility, is suitable for the aspects of information encryption and ultraviolet detection, and is suitable for large-scale production and application.

1. Name of the product in this design: Double-headed ultraviolet light detection flashlight (DY-06). 2. Purpose of this design: for lighting. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A power switch includes an OC detection circuit, a UV detection circuit, and an OC indication circuit. The OC detection circuit detects an over-current in the power switch, provides an OC flag in a first state when no over-current is detected, and provides the OC flag in a second state when the over-current is detected. The UV detection circuit detects an under-voltage in the power switch, and provides a UV fault indication in a third state when the under-voltage is not detected, and provide the UV fault indication in a fourth state when the under-voltage is detected. The OC indication circuit provides an OC fault indication in the third state when the over-current flag is in the first state, and provides the OC fault indication in a fifth state when the over-current flag is in the second state. The UV fault indication and the OC fault indication are configured in a wired-or to provide a common fault indication.

A power switch includes an OC detection circuit, a UV detection circuit, and an OC indication circuit. The OC detection circuit detects an over-current in the power switch, provides an OC flag in a first state when no over-current is detected, and provides the OC flag in a second state when the over-current is detected. The UV detection circuit detects an under-voltage in the power switch, and provides a UV fault indication in a third state when the under-voltage is not detected, and provide the UV fault indication in a fourth state when the under-voltage is detected. The OC indication circuit provides an OC fault indication in the third state when the over-current flag is in the first state, and provides the OC fault indication in a fifth state when the over-current flag is in the second state. The UV fault indication and the OC fault indication are configured in a wired-or to provide a common fault indication.

The utility model provides a screen and electronic equipment, the screen comprises a display panel and a driving chip, and the driving chip is used for controlling the display panel; at least one photoelectric detector is further arranged in the display panel, electrically connected with the driving chip and used for detecting the ultraviolet intensity of the external environment. The photoelectric detector is arranged in the display panel and used for detecting the ultraviolet intensity in the external environment, so that the screen has a display function and an ultraviolet detection function. Besides, the ultraviolet detection device does not occupy the space outside the screen, interference with other parts in the electronic equipment is avoided, the overall size of the electronic equipment can be reduced, the portability is improved, and the cost is reduced. Meanwhile, the photoelectric detector is arranged in the display panel, so that the ultraviolet receiving range of the photoelectric detector can be enlarged when the ultraviolet intensity of the external environment is detected, and the accuracy of the ultraviolet intensity detection function is improved.

The invention provides cap type audio output equipment. The cap type audio output equipment comprises a cap body, audio output equipment arranged on the cap body, a first detection module, a control module and an ultraviolet detection module, the audio output module is arranged at a first position close to the ear of a wearing object when the cap body is worn, and the ultraviolet detection module is arranged at the first position and / or a second position in front of the wearing object when the cap body is worn; the first detection module is used for detecting posture information of the cap body and transmitting the posture information to the control module; the control module is used for determining an angle of the ultraviolet detection module relative to the horizontal plane based on the attitude information, acquiring first ultraviolet data collected by the ultraviolet detection module when the angle relative to the horizontal plane is not smaller than a preset angle, generating prompt information based on the first ultraviolet data and sending the prompt information to the audio output module; and the audio output module is used for broadcasting prompt information. According to the invention, the convenience of obtaining the ultraviolet information and the accuracy of the obtained data are improved.

The utility model belongs to the technical field of umbrellas, and particularly relates to an umbrella with an umbrella tail capable of changing color when encountering ultraviolet rays, which comprises umbrella ribs, umbrella cloth is fixedly mounted on the outer surfaces of the umbrella ribs, an umbrella rod is arranged in the umbrella ribs, an umbrella handle is fixedly connected to the bottom end of the umbrella rod, and the top end of the umbrella rod penetrates through the top of the umbrella cloth. A second ultraviolet detection ring is fixedly mounted on the outer surface of a mounting ring, located in the umbrella cloth, of the umbrella ribs, and a first ultraviolet detection ring is mounted at the top end of an umbrella rod of the umbrella ribs through a mounting assembly; the ultraviolet-proof effect of the umbrella cloth can be judged through detection and comparison of the second ultraviolet detection ring and the first ultraviolet detection ring which are arranged inside and outside the umbrella cloth, and when the first ultraviolet detection ring at the umbrella tail outside the umbrella cloth changes color, the second ultraviolet detection ring on the umbrella rib of the honeycomb structure inside the umbrella cloth does not change color; in this way, it can be indicated that the ultraviolet-proof effect of the umbrella cloth is good, a user can clearly know that the ultraviolet-proof capacity of the umbrella is high, and therefore the umbrella can meet more use requirements.