34results about How to "Small anti-interference ability" patented technology

The present invention discloses a vertical magnetic source wave number apparent resistivity measurement method and device. The method comprises the steps of: laying a vertical magnetic source at the earth's surface and supplying current signals; arranging a measurement point at a position having a distance r from the vertical magnetic source and collecting a tangential electric field and a vertical electric field, and substituting the tangential electric field and the vertical electric field into a following simple cubic equation to calculate parameters x; and calculating the wave number apparent resistivity corresponding to the frequency at the measuring point and the wave number of the electromagnetic field according to the parameters x, and calculating the phase based on the electromagnetic field. The method for analyzing and calculating the wave number of the electromagnetic wave and the corresponding apparent resistivity through the electric field and the magnetic field is suitable for any frequency and any transmit-receive distance, is accurate in result, and has ability on detection of the underground depth electricity structure in a short transmit-receive distance.

The invention relates to a brake property check method of disc damper brake, and a relative device, wherein the back end of a disc spring of the disc damper brake is arranged with a sensor which signal is output via a lead wire. When the damper brake works, the pressure on the disc spring via the sensor can directly be used to measure the positive pressure on the disc damper brake. A support of the disc damper brake along the axle of the damper brake is arranged with a touch Hall displacement sensor which measuring rod is contacted with the side end of a block base to effectively measure the displacement of brake space. The invention uses a data pickup and process system to measure the idle time and brake decelerate value of the damper brake. The inventive method can confirm the reliability of damper brake in use, with high measurement accuracy, strong interference resistance, small volume, and long service life, more particularly to be used for checking the brake property of disc damper brake. The inventive method has simple and easy operation, high check accuracy, simple structure, easy installment, easy maintenance, and wide application.

The invention relates to a deepwater semi-submerged drilling platform, which comprises floating tanks, an upright post, a transverse supporting rod and a main deck, wherein a drilling block is arranged above a moon pool in the middle of the main deck; and a derrick is arranged on the drilling block. The deepwater semi-submerged drilling platform is characterized in that: a half derrick space for pre-connecting a drilling tool is reserved on one side of the derrick; a water isolating pipe, a drilling stem, a blowout preventer and a production tree are arranged on the main deck around the moon pool respectively; and an anchor moored positioning and dynamic positioning combined position system which consists of front and back four groups of anchor gears distributed on the left and right sides of the main deck is adopted, each group of anchor gears are provided with 3 anchor chains, a dynamic positioning system consists of 8 dynamic thrusters capable of rotating 360 degrees at the front and back four corners of the bottom of the two floating tanks. In the deepwater semi-submerged drilling platform, the maximum operation water depth is up to 3,000 meters, the maximum drilling depth is up to 12,000 meters, and the maximum variable load is up to 9,000 tons. The deepwater semi-submerged drilling platform can operate in the South China Sea, Southeast Asian sea area and West Africa sea area with severe sea conditions efficiently and safely.

An optical switch of 2X2 monolithic crystal suitable for optical internet and optical computing fields applies a crystal of long parallel hexahedron in the middle of which set a pair of electrodes along the crystal light shaft to make up a photoelectric modulation region in the middle of the crystal. The photoelectric modulation region from the crystal beam input face to the middle position is the light beam joining region and the light splitting region is from behind the photoelectric modulation region to the crystal optical beam output face, so as to realize three functions of input beam polarizing, deflection and beams joining, output beam polarizing, deflection and bean splitting and photoelectric modulation, integrating basic performance necessary for 2X2 optical switch.

An ultra-low frequency electromagnetic induction monitoring and early warning coal rock dynamic disaster system and method, belonging to the field of mine safety and monitoring. The method is to monitor the ultra-low frequency electromagnetic induction signal generated by the loaded coal and rock mass in real time at a long distance through multiple measuring points, and provide an early warning of the risk of coal and rock dynamic disasters according to the signal strength and change rule. Install the monitoring host and antenna at the selected measuring point, and align the effective receiving direction of the antenna with the monitored coal and rock mass. The signals received by the antenna are conditioned, collected, processed, analyzed, stored, and displayed by the monitoring host. Through the communication interface , Monitoring sub-stations, real-time transmission of monitoring data to the monitoring center, to achieve 24-hour uninterrupted monitoring. The monitoring host and monitoring center analyze the monitoring data to determine whether it is dangerous. The system is easy to install and move, and has a high degree of automation in monitoring, analysis and early warning. It can be applied to monitoring and early warning of rock burst, coal and gas outburst, coal and gas extrusion, and water inrush.

The invention discloses a multifunctional serial voltage-stabilizing power supply. A battery pack is connected with a charging and discharging control circuit, the output end of a transformation and rectification filtering circuit is connected with the input end of a primary voltage-stabilizing circuit, the output end of the primary voltage-stabilizing circuit is connected with the input end of the charging and discharging control circuit and the input end of a secondary voltage-stabilizing and intrinsically safe circuit, the output end of the secondary voltage-stabilizing and intrinsically safe circuit is connected with the input end of a triple voltage-stabilizing and intrinsically safe circuit, and an overvoltage protection circuit is arranged between the output end of the secondary voltage-stabilizing and intrinsically safe circuit and the input end of a triple voltage-stabilizing and intrinsically safe circuit. The power supply can be applied to underground occasion containing explosive mixed gas and military communication occasion and can operate for a long term, resist high and low temperature, carry out short circuit on the output end of the voltage-stabilizing and intrinsically safe circuits for a long time and has improved function, excellent watertight and anti-explosion performances and extremely high reliability after running for a long time.

A device and method for measuring the inner diameter of a high-precision non-contact workpiece. The device includes a fixed bracket, a first measuring rod, a first drive mechanism, a first laser ranging sensor and a reflector. The fixed bracket is provided with a sliding track. The first measurement A slider is connected to the upper part of the rod, and the slider is connected to the sliding track, and the first driving mechanism drives the slider to move along the sliding track, so that the bottom of the first measuring rod can enter the inner bore of the workpiece to be measured; the first measuring rod is set The first laser distance measuring sensor, the bottom of the first measuring rod is equipped with a reflector, the first laser distance measuring sensor can emit a measuring laser, and the reflector can reflect the measuring laser to the inner wall of the workpiece to be measured, and reflect the diffusely reflected measuring laser to the first laser distance measuring sensor, and the first laser distance measuring sensor obtains the measurement result of the inner wall of the measured workpiece according to the received light information. The invention is non-contact detection, which avoids the adverse effects of object deformation, interference, work interruption and the like caused by contact.

The invention discloses a telescope frame control system. The signal input end of the motion controller is connected with the azimuth axis encoder and the pitch axis encoder, and the signal output end of the motion controller is connected with the azimuth axis driver, the pitch axis driver, and the azimuth axis driver. The pitch axis driver is connected to the torque motor of the azimuth axis and the torque motor of the pitch axis respectively; Position switch, position sensor, the signal output terminal of the microcontroller is connected to the power supply of the azimuth axis driver, the power supply of the pitch axis driver, the azimuth axis power-off brake, the pitch axis power-off brake, the stepper motor driver, the stepper motor driver is connected to the stepper motor, computer control Connect the motion controller and microcontroller. The invention effectively prevents failure caused by the azimuth axis and the pitch axis exceeding the range of motion, and ensures safe operation of the telescope.

The invention provides an organosilicon Schiff base fluorescent probe, the chemical structural formula of which is: . The above-mentioned fluorescent probe can be obtained by reacting aminopropyldisiloxane and 4-dianilinobenzaldehyde. This fluorescent probe can be used to detect Cr in solution, cells or organisms 6+ . The probe of the present invention has high emission quantum yield, radiation resistance and corrosion resistance, strong ability to penetrate cell membrane, excellent biocompatibility, strong anti-interference ability and little influence by environmental changes. The fluorescent probe of the invention can be synthesized by a "one-pot method", the synthesis process is simple and easy, the raw materials are cheap and easy to obtain, the preparation cost is low, and it is easy to popularize.

The present invention discloses a vertical magnetic source wave number apparent resistivity measurement method and device. The method comprises the steps of: laying a vertical magnetic source at the earth's surface and supplying current signals; arranging a measurement point at a position having a distance r from the vertical magnetic source and collecting a tangential electric field and a vertical electric field, and substituting the tangential electric field and the vertical electric field into a following simple cubic equation to calculate parameters x; and calculating the wave number apparent resistivity corresponding to the frequency at the measuring point and the wave number of the electromagnetic field according to the parameters x, and calculating the phase based on the electromagnetic field. The method for analyzing and calculating the wave number of the electromagnetic wave and the corresponding apparent resistivity through the electric field and the magnetic field is suitable for any frequency and any transmit-receive distance, is accurate in result, and has ability on detection of the underground depth electricity structure in a short transmit-receive distance.

The invention relates to a mine tunnel water gushing-out advance rescue real-time embedded control device, and belongs to the technical field of real-time embedded detection control. The device is composed of device front part, a device middle part and a device rear part. The device front part comprises a device front part spiral bit. The device middle part is composed of a rotary joint, a telescopic rod, a claw part spiral bit, a forward driving claw, an external sound source receiving device, a communication module, a circulating moving plate, an LED light source and a three-dimensional imaging device. The device rear part comprises a cable data wire I, a power supply line I, an air channel, a rescue goods bin and a sound transmit-receive device. The mine tunnel water gushing-out advance rescue real-time embedded control device is capable of entering a rescue point to contact trapped persons in time after a water gushing-out accident of a mine tunnel and before a life channel is available, determining the trapped position and the surrounding environment, and providing bases and guidance for the next search and rescue decision; in addition, the device is internally provided with the rescue goods bin and the air channel, thereby providing the basic water source, food, drugs and fresh air to the trapped persons.

The invention relates to a low-power consumption portable electrocardiograph monitor and a control method thereof, which belongs to the field of medical appliances. The portable electrocardiograph monitor comprises an electrocardiosignal collection unit, an electrocardiosignal analysis and storage unit and an upper computer. The control method comprises the following steps of: step 1: carrying out digital filtering to collected signals by using a wavelet entropy optimal threshold denoising method; step 2: carrying out rejection of baseline drift to the signals processed by step 1 by using a morphological filtering method; and step 3: carrying out disease classification to the signals processed by step 2 by using a support vector machine algorithm. The invention has the advantage of high integrity, and has the characteristics of portability, compactness and economy.

A crop canopy gradient rainfall remote collecting instrument comprises rainfall gauges, a main support, horizontal arm tray supports, trays, a main support locating disk, funnels, sensing trays, metering tipping buckets, a solar cell panel, a solar charging circuit, a lithium cell, a multi-path data collector, a GPRS remote controller and a remote network computer. The four horizontal arm tray supports are bridged on the main support at different heights and in the four directions, the trays are arranged at the tail ends of the horizontal arm tray supports, the rainfall gauges are arranged on the trays, the funnels, the sensing trays and the metering tipping buckets are arranged in the rainfall gauges, the main support is fixed by the main support locating disk, and the solar cell panel and a GPRS remote antenna are arranged on the main support. Due to the fact that the rainfall gauges are arranged on the main support at the different heights and in the different directions, the data accuracy of the crop canopy gradient rainfall remote collecting instrument can be guaranteed. Thus, original data can be provided for flood protection, water supply dispatching and water management of power station water reservoirs.