62results about How to "No radiation hazard" patented technology

The digestive tract remote measuring capsule electromagnetically positioning system includes sealed capsule with three-axis magnetic field sensor, signal processing module and radio communication module; three extracorporeal ring static magnetic field exciting coils; and extracorporeal data record instrument comprising monochip computerized control circuit, constant-current source circuit, multiplex switch, radio communication module, memory and power source module. During system operation, the three coils are fixed onto the surface of body to produce magnetic field under the excitation of the current from the instrument successively, the intracorporeal capsule detects the magnetic fields and produces and emits digital signal, and the instrument receives, saves and processes the signal, so as to obtain the 3D locus of the capsule.

The invention relates to a method for fabricating an aerated brick by using gold mine tailings and fluorite tailings. The method comprises the following steps: (1) decyanation: grinding the gold mine tailings into powder, adding water to prepare slurry, then adding calcium hypochlorite to the slurry, stirring and standing; preparation of mixed powder: grinding and evenly mixing quick lime, fluorgypsum, fluorite tailings, silicon powder and cement to prepare the mixed powder; (2) preparation of slurry: mixing and stirring decyanation slurry, the mixed powder, aluminium powder paste and water into mixed slurry; (3) preparation of a green body: pouring the mixed slurry into a mold, and foaming to prepare the green body; (4) fabrication of the aerated brick: cutting the blank and carrying out autoclaved curing to obtain an aerated brick product. The traditional industrial wastes polluting the environment, such as the gold mine tailings, the fluorite tailings and the like are prepared into the aerated bricks by innocent treatment through the steps such as decyanation, preparation of the mixed powder, preparation of the slurry, preparation of the green body, fabrication of the aerated bricks and the like, and the waste materials are changed into precious materials, so that the resources are fully utilized, and the environmental pollution is reduced.

The invention discloses a light-emitting reflection film. The light-emitting reflection film is formed by attaching a PET film (1), a light-emitting layer (3) and a reflection layer (5) sequentially, the surface of the PET film (1) is coated with a first layer of adhesives (2), the light-emitting layer (3) is attached to the first layer of adhesives (2), the light-emitting layer (3) is further coated with a second layer of adhesives (4), the reflection layer (5) is attached to the second layer of adhesives (4), and the reflection layer (5) is formed by pressing resin, glass bead materials and an aluminum foil layer. According to the light-emitting reflection film, the base film is coated with light-emitting materials and reflection materials alternately, the refection materials adopt the light-emitting performance of the light-emitting materials, the capacity of recognizing a signboard is improved for a person in dark, the person can see a target clearly, and safety hidden dangers are reduced. The light-emitting materials adopt the principle of reverse reflection of the reflection materials, so that the reflection intensity of the light-emitting reflection film is improved.

The disclosed antenna assembly is composed of N pieces (N is larger than or equal to 1) of antenna unit and M pieces (M is larger than or equal to 1) of ground of antenna. K pieces (K larger than zero and smaller than N) of antenna unit are positioned on the ground of antenna between main body and case of wireless communication terminal. Other (N-K) pieces of antenna unit are positioned on the ground of antenna between back of screen of turnable cover and case of wireless communication terminal. Through feeder apparatus, N pieces of antenna unit are connected to relevant transmitter or receiver. Features are: low spatial correlation, no radiation injury, low cost and easy of manufacturing. The invention can be widely applied for wireless communication for obtaining space diversity, angle diversity or polarization diversity of radio wave propagation, or in use for transmitting or receiving time-space coding or multiple inputs and outputs wireless communication system.

The invention belongs to the technical field of instruments, and particularly relates to a moisture content monitoring device and method. An existing online crude oil water content measuring method isgenerally used for measuring the local water content and cannot represent the overall water content condition in a pipeline. The invention provides a moisture content monitoring device which comprises a pipe body, an electrical tomography sensor and a microwave sensor are arranged in the pipe body, the electrical tomography sensor is connected with a signal collecting and processing unit, and themicrowave sensor is connected with the signal collecting and processing unit. Through the combination of the electrical tomography sensor and the microwave sensor, the identification of the gas-liquid manifold flow state in the pipeline is achieved, and the measurement result of the transmission line is enough to represent the overall water content condition in the pipeline.

The invention relates to a crude oil condensation point measurement device based on an ultrasonic technology and a measurement method adopting the crude oil condensation point measurement device. The crude oil condensation point measurement device based on the ultrasonic technology comprises ultrasonic transmitting, receiving and processing devices, ultrasonic single probes, a condensation point test tube, a wall-hanging-avoiding sample adding device and a terminal control system, wherein the wall-hanging-avoiding sample adding device, the three ultrasonic transmitting, receiving and processing devices and the terminal control system are arranged in a box body; the three ultrasonic transmitting, receiving and processing devices are connected with the terminal control system respectively; the three ultrasonic single probes are connected with the corresponding ultrasonic transmitting, receiving and processing devices respectively and are arranged on one side of the condensation point test tube in the rotating direction, the ultrasonic single probe in the middle is located in the oil product sample loading scale of the condensation point test tube, and the other two probes are tangent to the probe in the middle; temperature sensors are arranged in the condensation point test tube and the liquid box; a rotational driving device and the temperature sensors are connected with the terminal control system respectively. The precision of a measurement result is improved.

The invention discloses a non-contact oxyhemoglobin saturation measuring method based on an imaging device. The method is mainly applied to measuring non-contact oxyhemoglobin saturation under daily ambient light illumination conditions. According to the method, two optical filters with different wave bands (470nm and 520nm) are utilized for respectively reading video including human face areas according to a grey value, calculating the grey average of the human face areas in each frame and drawing time domain curves of the grey average with frame number as variable quantity. The two obtained wave-section-different time domain curves of the grey average are processed to be pulse contours with a smooth base line through an FFT band-pass smoothing. The averaging process is carried out on the wave-shaped curves to obtain I470DC and I520DC. According to the two oscillograms, the extreme value and the number of extreme values in a detecting area are calculated through differential threshold values, the detected pulse wave crest value is averaged, and I470AC and I520AC are obtained. The value can be obtained by combining the I470DC, the I520DC, the I470AC and the I520AC. Finally, oxyhemoglobin saturation is determined according to the fitted curves.

The invention discloses a device and method for measuring the thickness of electrical steel. The device for measuring the thickness of the electrical steel comprises a first plane-parallel capacitor and a second plane-parallel capacitor, the first plane-parallel capacitor represents a first capacitance value when the electrical steel penetrates through two polar plates of the first plane-parallel capacitor, and the second plane-parallel capacitor is used for representing a second capacitance value when no other objects exist between two polar plates of the second plane-parallel capacitor. The relative area and the distance of the two polar plates of the first plane-parallel capacitor are equal to the relative area and the distance of the two polar plates of the second plane-parallel capacitor, and the first plane-parallel capacitor and the second plane-parallel capacitor are both connected to a data processing device. The data processing device is used for calculating the thickness of the electrical steel according to the first capacitance value and the second capacitance value. The thickness detecting precision of the device and method for measuring the thickness of the electrical steel is not influenced by dust, moisture, wind and other environmental factors, radiation hazards cannot be brought to the environment and a human body in the detecting process, and the device and method are convenient to use.

The invention relates to a detection method of a spiral case welding seam. The TOFD detection verification method of a large-scale spiral case welding seam comprises the following steps: step one, preparing a sample, determining spiral case defect acceptance standards and TOFD detection technological parameters; step two, performing a spiral case welding seam contrast test in which TOFD, UT and RT are performed respectively, that is, firstly performing TOFD, then performing UT and RT respectively after detection, and finally dissecting unqualified defects determined respectively so as to verify respective detection accuracy; step three, performing a welding test plate contrast test, that is, preparing welding defects of cracks, incomplete fusion, lack of penetration, dense pores, slag inclusion, and the like on a test plate, and performing a contrast test with reference to step two; step four, performing contrast test analysis, and verifying TOFD reliability according to the defect detection rates of the three methods. The invention forms a TOFD, RT, and UT contrast test method of large-scale spiral case welding seams, and can be successfully applied to the detection of power station unit spiral case on-site installation welding seams.

The invention belongs to the technical field of measurement of X-ray radiation, gamma ray radiation, particle radiation or cosmic ray radiation and discloses an X/gamma dosimeter field calibration method based on an X-ray source and a radiation protection system. A calibrator is a gamma dosimeter having the same type as an instrument to be calibrated; an energy response curve of the dosimeter; thesimulated energy response curve of the dosimeter is corrected through a response value of a specific energy point acquired via experiments; Monte Carlo software is utilized to simulate filter spectral features of X-ray; calibration coefficient k1 of the instrument to be calibrated is acquired; correction coefficient k2 is acquired; calibration coefficient k=k1*k2 is calculated. Scale coefficientski under different conditions can be acquired via X-rays having different energies, and a final scale coefficient is acquired by calculating. The method herein is simple to perform, has no radiationdamage during operation, and is of important practical significance to solving the measurement results accuracy problem of a fixed gamma dosimeter.

The invention relates to a method for improving adhesive force between a polyester cord and coating rubber. The method comprises the following steps of: firstly, carrying out electron beam irradiationon the polyester cord; and secondly, dipping and coating the polyester cord subjected to electron beam irradiation to obtain a polyester cord fabric. According to the method, the electron beam irradiation modification process is added prior to a process of preparing the polyester cord fabric by adopting the secondary dipping method, and the polyester cord can be modified by adopting online embedding or offline irradiation, so that the activity of the polyester cord is improved, the dipping processing cost is reduced, the production process is optimized, the adhesive force between the cord andthe coating rubber is improved, and the quality of the cord fabric is stable. The method is environment-friendly, simple in process and convenient to operate.

The invention provides an energy-saving PTC heating wall for an integrated bathroom. The heating wall comprises a phenolic foam wall body, wherein a plurality of PTC heating straps are arranged on the side, close to the indoor position, of the phenolic foam wall and covered with a heat conducting silicone grease layer, and the heat conducting silicone grease layer is covered with an aluminum plate; each PTC heating strap comprises a silica gel outer sleeve, a plurality of PTC ceramic thermistor chips and aluminum straps, the aluminum straps are arranged on the two sides of the PTC ceramic thermistor chips and make contact with the silica gel outer sleeve, the aluminum straps are connected with PTC ceramic thermistor chips through conductive glue, and polyimide films are arranged between the silica gel outer sleeve and the aluminum straps. The energy-saving PTC heating wall can overcome the defects of an existing electric heating bathroommaster, is high in safety performance, long in service life, good in temperature control, low in energy consumption, free of hidden danger of radiation and high in comfort in use.

The invention discloses a detection method for potassium sorbate in wheat flour and relates to the technical field of quality control and quality safety of agricultural products/foods, aiming at solving the problems in the prior art that a detection process is complicated and difficult and the consumed time is long. The method comprises the following steps: obtaining a potassium sorbate and wheat flour mixture sample; determining an absorption spectrum of the sample by adopting a terahertz time-domain spectroscopy system; according to the absorption spectrum, determining an absorption coefficient of a characteristic absorption peak of the sample; according to the absorption coefficient of the characteristic absorption peak of the sample, determining a concentration value of the potassium sorbate in the sample through a relation between the absorption coefficient of the characteristic absorption peak of the sample and the concentration of the potassium sorbate in the sample. Compared with the prior art, the method has the characteristics of simplicity in detection and short detection time; the detection method is a safe, efficient and high-precision nondestructive testing method.

The invention discloses a defecation monitoring and intelligent reminding device, comprising a casing, a sensing system, a wireless transmitting system, a power source and a power switch integrated on a circuit board. The sensing system includes at least two sets of sensors, and two Group sensors are located at both ends of the circuit board. The invention has a simple structure, uses a temperature and humidity sensor to sense the temperature and humidity changes caused during defecation, and determines the position where the temperature and humidity changes occur to determine the bowel movement, which is in line with the actual application, and will not cause inaccurate detection results due to seasonal changes. , and urine and feces can be detected, easy to use, almost no radiation hazard to users, and can be reused many times.

Water storage trough of the new type bathtub is connected to microwave heater. When temperature sensor inside the microwave heater has measured that water temperature inside the bathtub lowers to a certain degree, the invention starts up magnetron to heat water inside the microwave heater. Through effect of heat conduction, water temperature inside the bathtub is raised so as to reach purpose of controlling temperature. The microwave heater could be as a cube, and is produced from composite materials: microwave transmission material in inner layer, and material impermeable to microwave in outer layer; or being setup in the bathtub, the microwave heater is produced from clapboard of circulation mesh with diameter less than 3mm enclosed by bottom face of water storage trough of bathtub. Features are: no risk of electric shock, no water fouling, energy saving, safe and reliable.

The invention discloses a 126kV three-phase common-box basin-type insulator interface defect detection method, which comprises the following steps of: performing defect detection on a central conductor-epoxy resin interface of a detected 126kV three-phase common-box basin-type insulator by utilizing an ultrasonic longitudinal wave reflection detection system, establishing an interface defect ultrasonic propagation model, taking an amplitude as a defect characterization quantity, enabling the ultrasonic probe to scan along the detection path, determining the depth of the interface defect, obtaining two-dimensional and three-dimensional images of the interface defect through data three-dimensional reconstruction, determining then the size of the interface defect. The method can be used for factory detection of the basin-type insulator and can also be suitable for field assembly detection of the basin-type insulator. The technical problems that when an X-ray imaging method is used for detecting the interface defects of the basin-type insulator, the sensitivity to the defects with the small width is not high, equipment is large in size, inconvenient to carry and high in price, and X-rays have radiative harm to the human body are solved. The method has the advantages of low detection cost, high detection precision, small size and no X-ray radiation harm to a human body.

The invention discloses a portable curriculum schedule which is characterized in that a sliding groove (4) in a bottom plate (1) is fastened with a sliding block (3) on a main sliding bar (2); an upper sliding bar (5) and a lower sliding bar (6) on the main sliding bar (2) are clamped in a groove (7) in the side edge of the main sliding bar (2); a convex point (9) on the sliding block (3) is embedded in a position of a concave point (10) on the sliding groove (4), and used for fixing the main sliding bar (2); a curriculum schedule is pasted in a curriculum schedule region (11); a theme of the curriculum schedule is pasted on a sticker concave surface (8).

The invention discloses a microcurrent heating composite which is formed by combining forming plastic and carbonaceous particles. The content of the carbonaceous particles ranges from 2% to 25%, the microcurrent heating composite is driven by direct current to form electric field type electric conduction, and therefore overall heating is achieved. According to the technical scheme, the microcurrent heating composite can stimulate the polar distribution direction of the forming plastic to frequently reverse to form dielectric loss, and then heat is generated. When the microcurrent heating composite works, overall heating is achieved, a heat conduction device does not need to be arranged, and the heat efficiency is higher. The microcurrent heating composite is low in power consumption and low in working current, the heating temperature does not exceed 36 DEG C, radiation hazards are avoided, and the microcurrent heating composite is very suitable for being used in contact with the humanbody. The invention further discloses a heating toilet seat.