312 results about "Moisture measurement" patented technology

The invention discloses a novel electric cooker which comprises a pot body, a pot cover and a liner, wherein the liner is placed in the pot body; and the pot cover is disposed on the pot body and used in cooperation with the pot body. The novel electric cooker is characterized by comprising a temperature controller, a pressure controller, a moisture measurement device and a single-chip microcomputer, wherein the single-chip microcomputer is disposed on the inner wall of the pot body and connected to the temperature controller, the pressure controller and the moisture measurement device; the temperature controller comprises a heater and a temperature sensor, and the heater is disposed on the bottom of the outer wall of the liner; the temperature sensor is disposed on the inner wall of the pot cover; the pressure controller comprises an adjustable steam micro-pressure valve and a pressure sensor, and the adjustable steam micro-pressure valve is disposed on the pot cover; the pressure sensor is disposed on the inner wall of the pot cover; and the moisture measurement device comprises a moisture measurement instrument. According to the invention, rice can be soaked for a proper period, and accurate control of temperatures and pressures can be achieved, so that the best rice cooking effects can be achieved.

The invention relates to non-linear optical frequency conversion and the application of the non-linear optical frequency conversion and provides a method and a device which can widen the preparation requirements for a biological sample, do not need preparation of the sample, are high in measurement sensitivity, and can achieve high resolution, fast and real-time biological sample moisture content and distribution imaging measurement. The technical scheme is that the biological tissue moisture measurement device based on terahertz wave attenuated total reflectance (ATR) is composed of a tunable terahertz (THz) radiation source, a non-spherical face lens assembly, a total reflection prism, a two-dimensional mobile scanning platform, a terahertz wave detector and a computer. The total reflection prism is placed in the middle of the non-spherical face lens assembly, the face to be tested of a biological sample to be tested clings to the top face of the total reflection prism fixed on the two-dimensional mobile scanning platform, terahertz (THz) waves are projected to the terahertz detector through the non-spherical face lens assembly, and a detection result of the terahertz detector is output to the computer. The biological tissue moisture measurement device and the method based on the terahertz wave attenuated total reflectance (ATR) are mainly used for biological sample moisture content and distribution imaging measurement.

The invention discloses a refined rice processing method. The refined rice processing method comprises the following steps of rice screening, stone removal, magnetic separation and rice shelling, rice-bran separating, secondary shelling, thickness grading, moisture measurement and drying or atomizing, rice milling and white rice grading, rice cooling, polishing, color sorting, secondary white rice grading and moisture content detection, and packaging. The refined rice processing method comprises a plurality of impurity removal steps, and consequently, the purity of rice is guaranteed, the produced rice is high in purity, and the safety and the processing efficiency in the processing process are guaranteed. In the rice shelling and rice milling steps of the refined rice processing method, the material temperature is strictly controlled so that the material can be always kept in a relative low temperature appropriate environment, and the crack ratio and the broken rice rate can be reduced and the complete particle rate can be increased; the original faint scent of rice is maintained. The refined rice processing method is used for solving the problems of surface damage and uneven polishing in the rice polishing process by controlling the polishing water temperature and the dampening amount; as a result, the surfaces of all the rice grains polished can be kept smooth and clean, and the quality guarantee period of the rice can be prolonged.

A system for controlling the residual moisture in pre-cured binder coated glass fibers. The moisture of the binder coated glass fibers is measured after the process water is extracted in a collection box. Based on the level of moisture found in the coated glass fibers, adjustments are made to the process upstream of the moisture measurements. The adjustments include, but are not limited to, adjusting the amount of water used to make the binder composition; adjusting the amount of heat applied to the binder composition as it is applied to the glass fibers and adjusting the vacuum conditions used to extract the process water from the binder coated glass fibers. Control of the residual moisture in the precured binder coated glass fibers helps ensure proper curing of the binder during the subsequent curing step.

The invention relates to a prepunching device capable of being used for a section soil moisture measurement system. Three parallel protruding slide ways (1) are arranged on the inner wall of a limiting pipe (2) in the axis direction of the limiting pipe. Grooves with the same number as the protruding sliding ways (1) are formed in the positions, corresponding to the protruding slide ways (1), of the edge of a round steel plate (7). The round steel plate (7) does vertical motion in the axis direction of the limiting pipe under the action of external force, and the round steel plate (7) is further provided with two holes (8) allowing inserting needles (6) to penetrate. The two inserting needles (6) are fixed to the bottom of a mounting base (13). The top of the mounting base (13) is fixedly connected with an extension rod (4), and the mounting base (13), the inserting needles (6) and the extension rod (4) form an integrated part. The two inserting needles at the tail end of the integrated part penetrate through the holes (8) of the round steel plate respectively, the integrated part pushes the round steel plate (7) to vertically move downwards along the protruding slide ways (1) in the limiting pipe (2), and finally two prepunched holes (9) allowing the section soil moisture measurement system to measure the moisture content of soil are punched in the drilling bottom.

A tire-based system and method for estimating road surface friction includes a model-based longitudinal stiffness estimation generator using tire-based parameter inputs and vehicle-based parameter inputs; an actual longitudinal stiffness estimation generator using real-time vehicle-based parameter inputs; and a tire road friction estimation generator for deriving a tire road friction estimation from a comparative analysis between the actual longitudinal stiffness estimation and the model-based longitudinal stiffness estimation. A road surface classifier algorithm is employed to generate a road surface type analysis from the road friction estimation, an ambient air temperature measurement, and an ambient air moisture measurement.

The invention discloses a soil profile moisture measuring device and a measuring method thereof. The device includes a host computer (1), a sensor node (2), an insulating sleeve (6), a sealed top cover (5) and a waterproof plug (7); the host computer (1) passes through a data acquisition and processing module (3 ) is connected to the sensor node (2); the insulating sleeve (6) is installed outside the sensor node (2), and the lower end of the insulating sleeve (6) is connected to the waterproof plug (7), the The upper end of the insulating sleeve (6) is connected to the sealing top cover (5) through the connecting body (8); the sensor node (2) includes two metal sheets (15), and the two metal sheets (15) are radially connected to each other The intervals are fixed on the surface of the insulating cylinder (12), and the two metal sheets (15) are respectively connected with the sensor circuit board (16). The method can adjust the number and spacing of the sensor nodes (2), set the address codes of each sensor node (2) of the device through the host computer (1), measure and store and display the results. The device has simple structure, easy layout, convenient use, and can be disassembled and assembled freely to realize the measurement of single-point or multi-point dynamic water content of the soil profile; the method is flexible and convenient, and realizes the dynamic measurement of soil at different depths.

The invention relates to the grain bin grain temperature and moisture detection field, in particular to a digital sensing device for carrying out on-line grain temperature and moisture measurement in a grain bin. The sensing device solves the problem that the prior grain situation measuring and controlling system can not simultaneously carry out the accurate on-line grain temperature and moisture measurement; the device comprises a tensile wirerope, a plurality of grain temperature and moisture sensors which are fixed along the tensile wirerope and connected in parallel with each other and a plastic cladding externally wrapped on the tensile wirerope and the grain temperature and moisture sensors; the digital signal transmission lines of all the grain temperature and moisture sensors are connected with each other. Each grain temperature and moisture sensor comprises a hard plastic tube with an in-built thermistance and a metal cylinder respectively sleeved and fixed on two ends of the hard plastic tube to form a detecting capacitor; the hard plastic tube is provided with a measuring circuit inside for measuring the variable quantity of the detecting capacitor and the thermistance. The digital sensing device has reasonable structure and low manufacturing cost, adopts a digital transmission mode and can carry out the accurate on-line grain temperature and moisture measurement in the grain bin.

A device for irrigating soil has a chassis having wheels or tracks for motion, the chassis having one or more water sprinklers with streams directed at the soil, a water storage tank, and a sloped catchment surface having one or more sloped planes or curved surfaces for receiving water from a refill station into the water storage tank, wherein, under the control of an electronic circuit, the irrigation device can refill the water tank by positioning any part of the catchment surface under a water stream from the refill station. A method has the steps of measuring soil moisture at remote locations, refilling the mobile robot using a gravity feed water stream, defining a route for distribution of water, traversing the irrigation routes, refilling water according to soil moisture measurements, storing photovoltaic energy in a battery, and rotating, to a compass heading such that the photovoltaic array is optimally oriented.

The invention relates to a soil water content measuring instrument and a method. The instrument comprises a pulse signal generator for generating a pulse signal and transmitting the pulse signal to a measurement probe; the measurement probe for reflecting at the start end and the tail end after receiving the pulse signal to respectively generate two pulse reflection signals; a pulse detection circuit for detecting and sampling the two pulse reflection signals provided by the measurement probe to obtain two sampled pulse reflection signals; and a micro-control unit for obtaining the water content per unit volume of soil according to the two sampled pulse reflection signals. According to the invention, time domain reflection resulting from impedance mismatch between the start end and the tail end of the measurement probe is formed by using the pulse signal, and the actual water content per unit volume of the soil to be detected can be obtained by measuring the time difference of mirror reflection waves. The invention has the advantages of high measurement speed, high accuracy, low cost, easy batch production, etc.

The invention relates to a water-fertilizer integrated intelligent control system for irrigation based on soil moisture measurement and a control method thereof. The control system is composed of a soil moisture information collection station, a central control unit storing soil moisture information, and an irrigation unit. The soil moisture information collection station is connected with a first input terminal of the central control unit; and a first control terminal of the central control unit is connected with the irrigation unit. The control system is characterized in that an illumination intensity detection circuit, an air temperature and humidity detection circuit, and a fertilization unit are arranged in the system; the illumination intensity detection circuit and the air temperature and humidity detection circuit are connected with a second input terminal of the central control unit; and a second output terminal of the central control unit is connected with the fertilization unit. The control system and method have the following beneficial effects: on the basis of intelligent control of the central control unit, effects of water saving, fertilizer reduction, high yield, and high efficiency are realized; the water and fertilizer wasting is reduced; the fertilizer and water utilization rates are improved; and thus effects of high yield and high efficiency of crops can be realized.

The quantitative moisture measurement method for near infrared paper comprises: modulating the infrared light into near infrared lights with different wavelength and arranged as chronological order to reflect with a reflector to the emission integral semisphere to reflect and cross the paper to focus on a optical-electrical converter, sending the converted electric signal to microprocessor for pretreatment; then, transmitting into a data centralized processing unit to recognize and divide into reference signal with one path to control front amplifier and another path as the reference signal and measurement signal; calculating in the processing unit to obtain quantitative moisture content. This invention realizes online measurement with high accuracy and low cost.

The invention relates to a method and device which achieves skin moisture measurement with the help of bioelectrical impedance spectroscopy, in particular to a method and device for the skin moisture measurement. According to the method and device for the skin moisture measurement, electrical impedance values of the skin on multiple frequency points are measured through electrodes contacted with the skin of the human body, measurement results are converted into a complex impedance spectroscopy curve graph, and the complex impedance spectroscopy curve graph is displayed on a display screen of an instrument. According to the smooth condition of an impedance spectroscopy curve, kernel parameters are given out, and corresponding skin moisture content is calculated according to the kernel parameters. The method can simultaneously provide the electrical impedance spectroscopy curve and the skin moisture content obtained through calculation for users. According to the method and device for the skin moisture measurement, the measurement range of the skin moisture content is made to be expanded to the condition that the skin is quite dry, and given results are more visual and more dependable.

The invention discloses a moisture measurement method and device of a vertical section of farmland soil. The device is characterized by comprising a mounting pipe sleeve, a hollow cylindrical electrode, an insulating pipe column, a base band coaxial cable, a liquid-phase hollow water column, a resisting plate and a core processor; the moisture measurement device of the vertical section of the soil is controlled by a voltage-controlled oscillator to generate a high-frequency oscillation signal; a low-frequency square wave signal is obtained through silicon epitaxy high-frequency and low-noise amplitude amplification, and shaping and frequency division of a dual-modulus prescaler; accurate sensing of the volume moisture content of the soil is realized through a mathematical model between the frequency and the volume moisture content of the soil. A cylindrical stereoscopic type multilayered structure is adopted, and a moisture dynamic determination fitting and quantitative inversion technology of the vertical section of the farmland oil is integrated, so that the volume moisture convent of different heights of the vertical section of the farmland oil and the moisture supply amount of the soil of the vertical section are dynamically sensed in real time by utilizing the fewest layers; the moisture measurement method and device has the greatest advantages that the moisture condition of the vertical section of the soil can be continuously sensed in real time, the space integrity is strong and real-time calibration can be realized.

The invention discloses an automatic unloading and online detecting method for crude tobacco bales. The method comprises the following steps of: firstly, unloading tobacco bales through a telescopic unloading slideway; then, carrying out weight detection and moisture detection on the tobacco bales through an online belt weigher and a microwave moisture instrument, and sorting weight and moisture qualified tobacco bales through a tobacco bale sorting device; next, unpacking tobacco bales with qualified weight and moisture, repacking the tobacco bales after carrying out chemical component detection by using an online near infrared spectroscopy, and classifying the tobacco bales by using a tobacco bale resorting device according to the tobacco bale chemical components measured by the online near infrared spectroscopy; and finally, classifying and basketing tobacco bales with detected weight, moisture and chemical components. The functions such as automatic gunny bag unloading, one-by-one moisture measurement, one-by-one weighing, one-by-one chemical component detection and unqualified gunny bag sorting are achieved, and the automatic unloading and online detecting method is high in efficiency, overall in detection and high in automation degree.

A soil moisture sensor and a soil moisture sensing system are provided. The soil moisture sensor includes a double groove helical structure having grooves and formed from an insulator. The soil moisture sensor further includes at least a first electrode and a second electrode formed from one or more metals deposited at at least two different locations on the grooves. The soil moisture sensor also includes a processor for processing a soil moisture measurement signal based on a conductivity between the electrodes. The soil moisture sensor additionally includes a wireless transmitter for transmitting the soil moisture measurement signal to a remote location.

The present disclosure provides apparatuses and computer readable media for measuring sub-epidermal moisture in patients to determine damaged tissue for clinical intervention. The present disclosure also provides methods for determining damaged tissue.

The invention discloses a multi-scale soil moisture content synergistic observation device. The device is composed of a wireless observation network WSN composed of a plurality of TDR soil moisture sensors, a region soil moisture measurement system CRS1000b, a satellite platform, a notebook computer hardware device platform and multi-scale soil moisture content synergistic observation control terminal software; the soil moisture content synergistic observation is launched under three-scale soil moisture content synergistic observation scheme of point, region and satellite pixel element; the existing advanced device and advantage technology method are integrated, the multi-scale soil moisture content synergistic observation is realized through the synergistic observation scheme design, the bottle neck of soil moisture content remote sensing retrieval result verification is broken through, the application and research field are developed; the popularization application can be served for most strict industries such as water resource management, agricultural water-saving and drought observation, the irrigation benefit and water resource utilization rate are improved.

The invention provides a sensor for a TDR soil moisture measuring instrument based on a phase detection principle. The invention is characterized in that the sensor comprises a shell and three metal probes; a coaxial cable is led out from the inside of the shell and is connected with the main body of the TDR soil moisture measuring instrument based on the phase detection principle; and the three metal probes are arranged at the lower end of the shell in parallel, the surface of each metal probe is covered by a PVC insulating layer and the head end of each metal probe is inlaid into the shell and is connected with the coaxial cable. The sensor for the P-TDR soil moisture measuring instrument is connected with a P-TDR host computer through an impedance transformer and the coaxial cable; and since the each metal probe is covered by the PVC coating to enable the characteristic impedance of the probes in soil to be matched with the coaxial cable, the signal reflection at the head end of the probe is reduced and the measurement accuracy is further improved.

The invention discloses a cylindrical sample preparation device for measuring moisture content of green sand through a capacitance method and a method for measuring the moisture content of the green sand, belongs to the field of moisture measurement of cast green sand, and solves the problem that the measuring accuracy of the moisture content of the green sand through capacitance methods is low in the past. The method includes producing a sand sample with the height equal to a main sample drum through the sample preparation device; connecting two exciting electrode shielded wires with a parallel resistance model circuit respectively, exerting alternating current excitation voltage on two exciting electrodes through the two exciting electrode shielded wires, turning off a switch K, serially connecting a sand sample equivalent resistor Rx with a capacitor Cx, and turning on the switch K, parallelly connecting the sand sample equivalent resistor, the capacitor Cx and a first resistor R0; and measuring the voltage drop uo1 and uo2 of a second resistor R under the two states to obtain the Cx, and obtaining the moisture content of the green sand through the existing relation between capacitor Cx and the moisture content.

The invention relates to a sensor for measuring soil moisture and a measuring method thereof. The soil moisture sensor sends out high frequency signals through a high frequency signal source; a detection circuit converts change of a dielectric constant into direct current voltage to output; and the outputted direct current voltage and soil moisture content determine mathematical relation, so as to achieve accurate measure of water content of soil volume; and the measurement accuracy is +/- 2 percent. Because the detector head of the sensor adopts a probe type, the sensor can be embedded in a soil section to measure continuously and can also be matched with a special measuring instrument to measure in a movable circulation mode; as the circuit is relatively simple, the measuring method has low cost which is much lower than that of a TDR soil moisture tester; , and the measuring method is convenient to debug, and ensures consistency of batch production of sensors.