34results about How to "Realize non-destructive monitoring" patented technology

The invention provides a cable joint core temperature inversion method and system based on the cable surface temperature, comprising: step 1, performing radial temperature inversion according to the one-dimensional transient thermal circuit model of the cable and the surface temperature measurement point temperature of the cable body Step 2: Use the finite element temperature field simulation method to construct a two-dimensional cable temperature field simulation model, and simulate the cable core contact point and cable core at different loading currents and different times The transient temperature of the fitting point is obtained to obtain the transient temperature simulation data set; step 3, taking the transient temperature of the cable core contact point as the independent variable and the transient temperature of the cable core fitting point as the dependent variable, the transient temperature simulation data set Perform fitting to obtain the cable core axial temperature function; step 4, combine the cable core fitting point inversion transient temperature and the cable core axial temperature function to obtain the cable core contact point temperature. The present invention utilizes the surface temperature of the cable body to obtain accurate cable core contact point temperature through inversion and fitting, which is simple and convenient.

The invention discloses a tube wave monitoring method for the partial danger relief effect of dynamic disasters in underground engineering, which belongs to the technical field of mining and geotechnical engineering safety detection and monitoring. It is characterized in that it includes a tube wave monitoring system, the tube wave monitoring system includes a tube wave monitoring device (5) placed in the stress release hole (3), the stress release hole (3) is set in the surrounding rock (1), and the stress release hole (3) is set in the surrounding rock (1). The coupling agent (4) is injected into the release hole (3); the tube wave monitoring device (5) includes a receiving transducer (7) and a transmitting transducer (11) and is simultaneously connected with the receiving transducer (7) and the transmitting transducer A tube wave detector connected to the energy device (11). In the tube wave monitoring method for the local hazard relief effect of dynamic disasters in underground engineering, stress release holes are used to realize the combination of dynamic disaster hazard relief and monitoring, without the need for secondary drilling of surrounding rocks, with simple operation and post-analysis , high degree of automation and high accuracy.

A bolt-based real-time monitoring method for resistivity of surrounding rock hazards in underground space belongs to the technical field of mining and geotechnical engineering safety detection and monitoring. Set up a real-time monitoring device for surrounding rock disasters in underground space, including power supply electrodes, measuring electrodes, electrical instruments, anchor rods and a main control computer. Connection, the power supply electrode and the measurement electrode are respectively connected with the anchor rod in the surrounding rock monitoring area of ​​the underground space. The anchor rod is used as a conductor to monitor the resistivity of the anchorage area and the surrounding rock, and the stability of the surrounding rock and the anchorage area is monitored according to the change of the resistivity. It has the advantages of no damage to surrounding rock, high accuracy and wide application range.

The invention discloses a concrete strength monitoring method based on a concrete strength monitoring device. The device and method monitor the initial wave velocity of the concrete when it is not eroded and the concrete wave velocity in different depth ranges under different erosion ages by embedding piezoelectric intelligent aggregates inside the eroded concrete, without the need to chisel concrete samples, etc. The destruction process, and the piezoelectric intelligent aggregate itself is strong enough to be compatible with concrete, so it will not affect the performance of the concrete structure, so that the non-destructive monitoring of the strength of the eroded concrete can be realized; the monitoring method provided by the invention can be real-time non-destructive monitoring Concrete wave velocity, by monitoring the wave velocity at different depths of eroded concrete, and constructing the relationship between wave velocity-dynamic elastic modulus-strength, the compressive strength of the eroded concrete structure in line with the actual engineering can be directly obtained, and then the concrete strength is used as the main index to measure Health monitoring and safety assessment of concrete structures.

The invention relates to the field of physiological index detection, in particular to a capsule for monitoring the pH value of gastric acid by nuclear magnetic resonance imaging and a preparation method thereof. The capsule includes a capsule shell and medicine placed in the capsule shell, and the capsule shell includes A capsule cap and a capsule body are connected, the capsule body is provided with a medicine containing cavity, and the capsule shell is made of gel. The capsule of the present application can be taken orally, and has strong drug compliance; it can eliminate the interference of macromolecules in gastric juice, and at the same time it will not excessively hinder the free entry and exit of hydrogen protons; it has a special structure and shows a different structural image from the surrounding tissue, which helps The signal is collected and the capsule is tracked in the body; the preparation method is simple and the production cost is low; the most important thing is that it can assist MRI to realize the non-destructive monitoring of gastric acid pH.

The invention discloses a curtain wall loosening monitoring sensor, system and method. The monitoring sensor includes a stretchable dielectric plate (1). Magnetic resonance structures (2) and electricresonance structures (3) are respectively distributed on the front surface and the back surface of the dielectric plate (1); the magnetic resonance structures (2) and the electric resonance structures (3) can both be transformed in a tensile mode in the stretching direction of the dielectric plate (1); and the magnetic resonance structures (2) and the electric resonance structures (3) arranged onthe back surface of the dielectric plate (1) are corresponded in an one-by-one mode. According to the curtain wall loosening monitoring sensor, system and method, the loosening situation of curtain wall glasses can be monitored in real time, non-destructive monitoring can be achieved, the loosening situation can be quantized, monitoring accuracy and sensitivity are high, and monitoring is simpleand convenient.

The invention provides a real-time monitoring method for energy release and buffering of surrounding rock disasters in underground space, belonging to the technical field of mining and geotechnical engineering safety detection and monitoring. It is characterized in that it includes a monitoring system and the following steps: step 1, fixing the anchor rod (1); step 2, installing the surrounding rock induction buffer mechanism; step 3, installing the surrounding rock displacement acquisition device; step 4, performing the surrounding rock (7) Displacement monitoring; step 5, when the displacement of the surrounding rock (7) exceeds the preset threshold or meets the precursory mode, go to step 6, otherwise go to step 4; step 6, there is a possibility of a surrounding rock disaster in the surrounding rock (7) , go to step 7, otherwise go to step 9. Step 7: Forecast the range of surrounding rock disasters; Step 8: Release the early warning level of surrounding rock disasters; Step 9: Alarm by the main control computer. Through the method, the monitoring of energy release, buffering and displacement of the surrounding rock is realized, and the possibility of accidents is reduced.

The invention discloses an ultrasonic multipoint real-time monitoring method for mine surrounding rock top plate disasters and belongs to the technical field of safety monitoring and controlling for mining industry and geotechnical engineering. An ultrasonic multipoint real-time monitoring device is characterized by comprising a non-metal ultrasonic detector (1), a plurality of single-transmitting double-receiving dry hole energy converters (2), a multiple-point-location switching device (3), a main control computer (4) and a sound-light alarming device (5), the single-transmitting double-receiving dry hole energy converters (2) are connected with the multiple-point-location switching device (3) via connecting cables, the multiple-point-location switching device (3) is connected with the non-metal ultrasonic detector (1) via a connecting cable, the non-metal ultrasonic detector (1) is connected with the main control computer (4), and the main control computer (4) is connected with the sound-light alarming device (5). The ultrasonic multipoint real-time monitoring method for the mine surrounding rock top plate disasters has the advantages of high safety, high automation degree, wide application range, multiple-point-location monitoring, graded alarming and the like.

The invention discloses a fast resin wetting forming technology based on material flow prepeak monitoring on the basis of a traditional resin wetting forming technology. A system comprises a monitoring module, a vacuum pump, a vacuum tank, a sensor, electromagnetic valves A, electromagnetic valves B, a throttling valve, a die, a storage tank, filler, die releasing cloth, a flow guide net, a flow guide pipe, a pipeline connecting piece, sealing cloth, a feeding pipeline, a middle pipeline and a gas extraction pipeline. The technology process mainly includes the steps that the die is divided into multiple filling areas; the material flow prepeak position is monitored through the sensor in the monitoring module; sequential starting and stopping of all the pipelines are controlled in cooperation of a controller, and step-by-step filling is achieved for the different filling areas; and after all the areas are filled with sizing materials, curing forming is conducted, then die releasing is conducted, and a product can be obtained. Compared with a traditional technology, the fast resin wetting forming technology has the beneficial effects that sizing material prepeak lossless monitoring is achieved, and the automation degree is high; and the probability of filling defects such as incomplete wetting can be better lowered, and meanwhile the labor cost is reduced. The fast resin wetting forming technology is particularly suitable for processing and producing of various large thermosetting resin matrix composite materials of complex structures.