44results about How to "Fast measurement results" patented technology

The invention discloses a rice sensory evaluation instrument, rice texture characteristic replacement sensory evaluation and a testing method. The testing method is used for testing the texture characteristics of rice, and belongs to the technical field of food detection, which solves the problems that the testing method of the texture characteristics in the prior art has unstable test results andlarge deviation of test data. The method of the present invention comprises the following steps: 1) a rice sampling step, taking out a specified amount of rice from a cooking utensil and cooling therice; 2) a sample preparation step: preparing a rice cake sample by using the cooled rice; 3) a sample testing step: placing the rice cake sample on a texture analyzer, applying a test probe of the texture analyzer to apply the pressure the upper surface of the rice cake sample, and obtaining the texture parameter of the rice cake sample, wherein the test probe has an action area on the rice cakesample which is larger than the upper surface area of the rice cake sample.

The invention discloses a digital shot blasting coverage rate measurement method based on a computer vision technology, and belongs to the technical field of digital image processing. The method comprises the steps of image acquisition, gray scale conversion, noise elimination, region segmentation, binarization processing, filling, pseudo connection elimination and statistics, and image processingfor surface dents after shot blasting of a plate. A computer program is adopted for shot blasting image processing, the consistency of multiple times of measurement is guaranteed, the measurement error is controlled within 5%, the measurement and calculation speed is high, the method does not depend on personal experience, the compatibility with other computer-aided manufacturing equipment is good, the portability is good, and possibility is brought to detection feedback link work in automatic shot blasting control circulation.

The invention discloses fast formaldehyde detection equipment with low power consumption. The fast formaldehyde detection equipment comprises a formaldehyde detector and intelligent terminal equipment in wireless communication with the formaldehyde detector, wherein the formaldehyde detector comprises an ARM processor, an inspiration control unit, a getter pump, an airflow chamber, an electrochemical sensor, a temperature sensor, a 3G monitoring/alarming unit, a WiFi module, an audible and visual alarm unit and a calibration setting key, the ARM processor controls the inspiration control unit to drive the getter pump to suck air into the airflow chamber, the electrochemical sensor and the temperature sensor are used for acquiring concentration and temperature signals of formaldehyde in the air and transmitting the signals to the ARM processor to calculate the concentration and temperature of formaldehyde after respectively conditioning the signals, the 3G monitoring/alarming unit or the WiFi module transmits the concentration and temperature of formaldehyde to the intelligent terminal equipment in a wireless manner for data storage and analysis processing, and feeds back the concentration and temperature of formaldehyde to the ARM processor, and when the concentration or temperature exceeds the standard, such alarms as short messages and emails are made and the audible and visual alarm unit is controlled to give an alarm. The fast formaldehyde detection equipment disclosed by the invention is used for detecting formaldehyde data quickly and intelligently with high precision and can be used for continuously measuring for a long time.

The invention discloses an absolute grating scale and a measuring method based on a CMOS image sensor, the absolute grating scale comprises a grating scale main body, an optical amplification system, a CMOS image sensor, a signal processing module and a master control module, a measurement code track and a subdivision code track are arranged on the grating scale main body, the optical amplification system is used for collecting light rays reflected or transmitted through the measurement code track and the subdivision code track, the light rays converge and are incident on the CMOS image sensor, the CMOS image sensor is used for collecting the reached light signal to obtain an analog image of the present measuring position and transmitting the analog image to the signal processing module, the signal processing module is used for converting the analog image into a digital image and transmitting the digital image to the master control module, and the master control module is used for processing the digital image to separately obtain a rough measurement position value and a subdivision position value and combining the position values to obtain an absolute position measured value. According to the invention, the measurement accuracy is high, the measurement resolution is greatly improved, and the grating scale and the method can be widely applied in grating measurement industry.

The application discloses a method and device for measuring the refractive index of soil by a V prism. The method comprises the following steps that: a soil sample to be measured is placed at a V-shaped gap of the V-shaped prism, and a layer of immersion liquid is filled between the soil sample to be measured and the V prism; a wireless electromagnetic-wave transmitter transmits electromagnetic wave beams vertical to an incident plane of the V prism, the electromagnetic wave beams are refracted when passing through the V prism and the soil sample to be measured, and the refracted electromagnetic wave beams are emerged through an an emergent plane of the V prism; a CCD (Charge Coupled Device) sensor is moved to respectively record position coordinates of the emerged electromagnetic wave beams sensed by the CCD sensor; and the position coordinates are substituted into a formula and the refractive index of the sample is obtained by calculation. The method and device disclosed by the application have the advantages that the traditional V prism method is improved, and the traditional glass prism is replaced into transparent ceramic, so that the measurement range of the refractive index is improved; simultaneously, due to adoption of the wireless electromagnetic-wave transmitter and the CCD sensor, the measurement accuracy is improved; and the measurement principle is simple and the benefit for rapidly obtaining a measurement result is achieved.

The invention relates to a multiparameter water quality analyzer which belongs to the technical field of water quality analysis. The multiparameter water quality analyzer comprises a temperature measurer, a pH value measurer, a salinity measurer, a total ammonia nitrogen measurer, a hydrogen sulfide measurer and a nitrite measurer. The output ends of the temperature measurer, the pH value measurer, the salinity measurer, the total ammonia nitrogen measurer, the hydrogen sulfide measurer and the nitrite measurer are respectively connected to the input end of a single-chip microcomputer system. In the invention, the temperature measurer, the pH value measurer, the salinity measurer, the total ammonia nitrogen measurer, the hydrogen sulfide measurer and the nitrite measurer are directly connected to the single-chip microcomputer system, and results are obtained through the calculation of the single-chip microcomputer. The six measurers are assembled into one analyzer, and thus, the invention is convenient to carry and fast and correct in measurement results.

The invention relates to a device (16) which is used to measure at least one component of a magnetic field. The inventive device comprises a magnetoresistive sensor (102) and a measuring chain (28). According to the invention, the input of the aforementioned measuring chain is connected to the magnetoresistive sensor (102), while the output thereof is intended to supply information that is representative of the magnetic field in the region of the sensor. In addition, the measuring chain (28) comprises means (136) for isolating a frequency component of the signal from the sensor representative of the magnetic field for a unique pre-determined frequency (FI).

The invention relates to a four-electrode testing device and a measuring method for the water content of tobacco. The water content of the tobacco is reflected by measuring the resistance of the tobacco through four electrodes as probes according to the specific function relationship between the resistance and the water content. The four-electrode testing device is formed in a way that a range selector is respectively connected with an electrode A, an electrode B, an electrode C and an electrode D through a singlechip computer and a resistance measuring circuit, and a PC (Personal Computer) is connected with a liquid crystal display circuit through a data uploading circuit and the singlechip computer. Compared with an infrared ray moisture meter, the four-electrode testing device disclosed by the invention has the characteristic that the measured result of the water content of the tobacco is prior to the precision and the efficiency of the infrared ray moisture meter. The influence from electrode polarization caused by measurement of single voltage through a pair of electrodes and the influence from offset voltage caused by measurement through single-direction power supply of the electrodes are overcome, so that the precision is increased; and the deviation of zone selection during measurement of a pair of electrodes is overcome, and thus the credibility of the measurement result is improved. A detection circuit is simple, the requirements on the color, shape and specification of the materials and light of a measurement environment are lower, the measurement result can be obtained more quickly and the water content inside the materials can be measured.

The invention discloses a sheet metal visual inspection acquisition terminal and method. The terminal includes a visual capture unit, a part measurement platform and a light homogenizing unit. The light homogenizing unit includes a delay board, a controller, light sensors, a computer control switch, a frame, and a light homogenizing board and dedicated light tubes, wherein the light homogenizing board is installed in the frame, the dedicated light tubes and the light sensors are evenly mounted on the light homogenizing board, the light homogenizing board is divided into multiple units, a lightshielding board is arranged on each unit, each light shielding board, the dedicated light tubes and the light sensors are connected to the controller, and the controller compares the light level information transmitted by the light sensors with a preset value and then automatically adjusts the number of the light shielding boards and the dedicated light tubes to be turned on. In this way, the light homogenizing unit can automatically realize the best light supplement effect according to the actual situation to remove the shadow of a part placed on the part measurement platform and improve theaccuracy of measuring the object to be measured. The method has direct and eye-catching measurement results and a low misjudgment rate.

The invention relates to a tool for measuring the diameter at breast height of a tree. The tool for measuring the diameter at breast height of the tree comprises three or more measuring edges, whereinthe plurality of measuring edges are sequentially connected end to end to form a linear structure, the measuring edges are hinged, the measuring edges can rotate around hinge points, the adjacent measuring edges can rotate to form an included angle of any size, one measuring edge is of a fixed length and the other measuring edges are of a telescopic structure, and the length can be adjusted. Thetool is simple to operate and high in measurement precision, and can be used for scientific research on forest resources, forest growth and the like; the tree diameter at breast height is calculated in a mode of forming a triangle or a polygon in a plane through the measuring edges and calculating the inner diameter, and compared with a diameter-at-breast-height ruler, the measuring edges are moreeasily kept in the same plane, so that errors are reduced, and the measuring precision is improved.