131results about How to "Convenient for field work" patented technology

The invention discloses a microwave scattering property test system based on a vector network analyzer. The microwave scattering property test system comprises the vector network analyzer, an antenna and a main control computer, wherein the vector network analyzer is used for generating a pulse radio frequency signal of a designated parameter under the control of the main control computer; the pulse radio frequency signal is transmitted by the antenna; and the vector network analyzer is also used for carrying out strobe treatment on a target echo signal received by the antenna to obtain microwave scattering property data within a designated area range. The vector network analyzer can be used for generating a narrowband pulse radio frequency signal with the frequency range covering wavebands of L, S, C, X, Ku and Ka; and the position of a strobe gate of a receiver is set by adopting a mode of fixed point test in pulse according to a test object. The microwave scattering property test system disclosed by the invention is convenient for field work and stable in performance and can be used for scattering property test of the ground background and a large-area camouflage net or the target scattering property test.

The invention relates to a horizontal hole ground stress measurement device based on a BWSRM (Borehole Wall Stress Relief Method) principle, which is used for the technical field of measurement of stress of rocks in an underground cavity or a mine opening. The horizontal hole ground stress measurement device comprises a sealed cable joint, a stress measurement main working part, a multiway stress measuring instrument, a measurement control unit and a detection part, wherein the sealed cable joint is connected with the front end of the stress measurement main working part to be used as an output port for a power cable and a communication cable of the integral device; the stress measurement main working part is sequentially connected with the multiway stress measuring instrument, the measurement control unit and the detection part; the multiway stress measuring instrument is used for recording variation of stress on a working surface in the process that a thin-walled diamond core drill implements ring-shaped cutting on surrounding rocks of the hole wall of a borehole; and the detection part is used for observing and recording the quality condition of the hole wall of the borehole in the process of propelling integral equipment into the horizontal borehole to a working hole depth and providing reference basis for a local hole section which is selected to be subjected to stress relief. According to the invention, the integral measuring process is controlled sufficiently by an electromechanical integration technology through adopting a main control module; and test reliability and measurement accuracy can be greatly improved. The horizontal hole ground stress measurement device is convenient to carry and apply in the field and easy to operate in the field and can carry out three-dimensional ground stress actual measurement easily.

The invention discloses a plant leaf area lossless measuring method. According to the plant leaf area lossless measuring method, a leaf blade image collection method and an indoor leaf area measurement calculation method are mainly used for carrying out measurement and calculation; according to the leaf blade image collection method, a digital camera, a shooting background base plate, coordinate paper, a steel tape and other tools are used as tools, and are easy to operate and convenient to carry, especially when shooting is carried out on the situation that the shooting resolution and the image storage pixel level set when the digital camera leaves the factory are utilized, and the shooting angle is close to 90 degrees, a clear leaf blade image can be obtained, and leaf area measuring accuracy does not have significant difference; according to the indoor leaf area measurement calculation method, the shot leaf blade image is stored in a computer preloaded with AutoCAD software, and the leaf area of a plant is measured and calculated by running the AutoCAD software. Lossless measurement of the leaf area can be achieved by combining the digital camera and the AutoCAD software; compared with a popular leaf area determinator at present, the plant leaf area lossless measuring method has the advantages of being easy and convenient to operate and low in cost.

Provided in the invention is a combined underground water monitoring device at least comprising a data acquisition terminal and a monitoring pipe fitting. A plurality of sensors are installed in the monitoring pipe fitting. The monitoring pipe fitting includes a plurality of monitoring sampling tubes, a plurality of sealing isolating tubes, a plurality of connecting tubes, and a tail tube located at the tail end of the monitoring pipe fitting, wherein the tubes are mutually connected; and all monitoring sampling tubes and all sealing isolating tubes are distributed alternately and are connected by the connecting tubes. The main body of the monitoring pipe fitting contains an outer tube, a gas tube, a support plate, and a sampling tube; the support plate is installed in the outer tube by being perpendicular to the axis of the outer tube; the gas tube and the sampling tube are fixed by the support plate; and more than two sampling tube beams are arranged in the sampling tube. Sealing isolating gasbags coat the outer tubes of the sealing isolating tubes; and airbag branch tubes connecting the sealing isolating gasbags and the gas tube are arranged in the tube walls. Sampling openings connected with the sampling tube beams are arranged on the outer tubes of the monitoring sampling tubes and the tail tube; and the lower end of the tail tube is sealed by a sealing base plate. With the device, monitoring and sampling of underground water of the multi-layer water-containing layer and the same water-containing layer at different depths can be realized.

The present invention relates to a geologic drill hole wall wall rock strain measurement device in rock stress gaging practice field. In the invention, lifting mechanism connects with upper end of outer cylinder sleeve, hermetically-sealed cable joint connects with electronic equipments cabin which is at the bottom of lifting mechanism, multipath strain measurement instrument and computer control unit are placed in electronic equipments cabin, the bottom of electronic equipments cabin has a cooling pump cabin, bottom of cooling pump cabin has a upper packer which is fixed in the outer cylinder sleeve by upper bracket of packer, the bottom packer connects with the bottom part of outer cylinder sleeve by the bottom bracket of packer, strain measurement main working part which is placed between upper packer and lower packer integrates with inner cylinder sleeve and push mechanism, front work window and back work window are placed at the corresponding place in outer cylinder sleeve, lower equipment cabin situated at tail of outer cylinder sleeve. The product of the present invention decreases probability of breaking core, improves success rate of stress measurement, and can be used in hundreds-meter deep hole.

The invention relates to an electric riveting tool used in the technical field of machines. The tool is composed of an outer cover, a trigger, a rivet pulling system, a lead screw transmission system, a planetary gear speed-reducing system and a power motor assembly. A spring sleeve is connected with the front end of a ball lead screw, the planetary gear speed-reducing system is fixed to a lead screw nut through a connection shaft, the power motor assembly is connected with the planetary gear speed-reducing system, a nail collecting cylinder is arranged at the rear end of the power motor assembly, a discharging pipe penetrates through a motor shaft and the planetary gear speed-reducing system and then is arranged outside a core ejector pipe in a sleeving mode, the outer cover is provided with a circuit board, the trigger and a stroke control plate, the circuit board is connected with a motor and the stroke control plate through control lines, the stroke control plate is provided with an inductor, a rolling wheel positioning block is provided with a magnet, and the inductor is located on the lower portion of the magnet. The tool is strong in power, can be used for work indoors and outdoors, is used in a handheld mode, accords with the principle of ergonomics, makes full use of tool space, can be used for pulling rivets of different specifications and is high in applicability, and waste nail rod discharging is easy.

The invention provides a rocking and vibrating type sweet osmanthus flower harvester which comprises a power device, a trunk rocking and vibrating device and a sweet osmanthus flower storing device. The trunk rocking and vibrating device comprises a screw rod. The two sides of the screw rod are respectively connected with one semi-circular arc fastening plate. The portions, in the fastening plates, of the screw rod are provided with double nuts. The two sides of the double nuts are provided with first connecting pins connected with telescopic rods outwards. The other ends of the telescopic rods are supported on the inner walls of the fastening plates through second connecting pins. A vibration exciter with a toggle switch is fixed on the outer wall of each fastening plate. The sweet osmanthus flower storing device comprises storing cloth with a round hole in the center, and a setting steel wire arranged on the periphery of the storing cloth. The storing cloth is provided with a joint from the center to the edge. Magnets are distributed on the two sides of the joint. A harvesting method comprises the steps of fixing the trunk rocking and vibrating device on a trunk of a osmanthus tree, setting the vibration frequency and the vibration time of the vibration exciter, turning on the toggle switches of the vibration exciters in the working state, and finally electrifying the vibration exciters to shake sweet osmanthus flowers down. The harvester and the harvesting method can improve the working efficiency, increase the sweet osmanthus flower recovery rate and improve the quality of the harvested sweet osmanthus flowers.

The invention relates to a manual lifting device, and in particular relates to an automatic tail rope rolling and releasing manual capstan. The automatic tail rope rolling and releasing manual capstan comprises a support, a U-shaped slot grinding core and a grinding core shaft, a left rocker arm and a right rocker arm, wherein the support is provided with a rotatable U-shaped slot tail rope wheel, a driven gear is fixed on one end face of the U-shaped slot tail rope wheel, the driven gear is meshed with an intermediate gear arranged on the support, and the intermediate gear is also meshed with a driving gear fixed on the end face of the U-shaped slot grinding core; and a rear bidirectional pawl is matched with the driven gear fixed on the end face of the U-shaped slot grinding core, and the rear bidirectional pawl is arranged on the support. Only one man is required to operate, the labour force is saved, and a malady that a tail rope of a capstan is required to be pulled by a specific person can be eliminated; and a tail rope automatically advances and retreats along with a hoisting stroke of an article and forward and reverse self-locking shifting forks are adopted, and an accident caused by exhaustion or accidentally drop of operating personnel can be prevented.

The invention discloses a system for automatically obtaining two-waveband target all-polarization information, and belongs to the field of polarization detection. The system comprises a telescoping system, an optical splitting system, a visible light all-polarization detection system, a near-infrared all-polarization detection system and a computer processing system, wherein the visible light all-polarization detection system is arranged in the transmission direction of the optical splitting system, and the near-infrared all-polarization detection system is arranged in the reflection directionof the optical splitting system. By aiming at the problem of low identification rate when a traditional method carries out detection in a complex environment, the system combines the memory effect ofrotatory polarization with the advantage of wide infrared radiation range, and the visible light and the near-infrared all-polarization information are blended to increase the detection probability of the target in the complex medium environment. Meanwhile, a liquid crystal phase delayer method is adopted to eliminate the defect that a traditional rotation polarizing film method carries out manual regulation so as to be unfavorable for outfield experiments and accuracy is low, the requirement of the outfield experiment on target detection automation is met, and a new detection device is provided for obtaining the target under the complex environment.

The invention discloses a cross station high-speed communication system for geophysical exploration and a communication protocol of the cross station high-speed communication system. The cross station high-speed communication system comprises a main control machine, cross stations and acquisition stations, wherein the main control machine is sequentially connected with the cross stations; the cross stations are connected by using cross lines; the acquisition stations are connected to two sides of each cross station by using large lines; each cross station comprises a field programmable gate array, a parallel-to-series converter, a series-to-parallel converter, a driver, an equalizer, a command interface and a data interface; each command interface is sequentially connected with the field programmable gate array through the driver and the parallel-to-series converter; and each data interface is sequentially connected with the field programmable gate array through the equalizer and the series-to-parallel converter. The invention is simple in structure, convenient to operate and use, and low in cost; data transmission speed rate reaches 144 Mbps; and when a transmission medium is an unshielded twisted pair, distances of data transmission and data receiving are 100 meters.

The invention discloses a portable dry-wet dual-purpose smoothbore pipe and line bore pipe inner surface wiping and cleaning device. Device wiping liquid is supplied through a quantitative spraying method, and supplying is even and controllable. Long-time and durable work of a standby power source is achieved through a small-power wiping and large-diameter pipeline mechanism. The device is compact and ingenious in structure and light in weight, and carrying and field work are facilitated. A ball head washing handle brush has the automatic advancing and retreating function, the axial force and deformation stressed by a flexible shaft are eliminated, abrasion of the flexible shaft is relieved, and rotation can be achieved in a labor saving mode. A reliable sealing structure is adopted, and a solution and gas do not leak. The device solves the problems that a current wiping machine depends on a power source and cannot wipe a large hole, carrying is not convenient, liquid supplying cannot be quantitative, spraying cannot be achieved, and equipment is corroded through leaking liquid. The wiping method is divided into a dry wiping mode and a wet wiping mode, spraying is not carried out during dry wiping, the ball head brush is directly used for rotary wiping, and during wet wiping, spraying and liquid supplying are carried out at the ball head brush while the ball head brush carries out rotary wiping.

The invention relates to an orthogonal field calibration device for a three-component magnetic probe and a calibration method thereof. The device is formed in a way that a thrust bearing and more than three stop blocks are arranged on a base; the stop blocks are used for limiting a rotary platform; the rotary platform is arranged on the thrust bearing; a cylinder is fixed on the rotary platform; the upper part of the cylinder is provided with two ear-shaped raised lines; a horizontal shaft coincides with a disk in diameter and is fixed on the disk; both ends of the horizontal shaft respectively pass through the two ear-shaped raised lines; the disk is hung between the two ear-shaped raised lines; the disk rotates around the horizontal shaft; the disk is provided with an angle scale; a three-component probe is fixed on the angle scale through a bolt or a rotary shaft; and one end of the three-component probe is provided with a connector. The device can completely ensure that three non-orthogonal magnetic probe sensitive shafts scan through a total space equiprobably as much as possible in the measurement process. The calibration device has a simple structure and low cost, and a special calibration environment is not needed, thereby, the measurement cost is greatly reduced, the fieldwork is facilitated, and the measurement efficiency is improved.

The invention relates to a zinc oxide arrester DC characteristic testing device and a zinc oxide arrester DC characteristic testing method. The zinc oxide arrester DC characteristic testing device comprises a microprocessor control module, a power supply module and an A / D converter, and further comprises a high-voltage power supply, a voltage sampling module, a current sampling module and a D / A converter, wherein the high-voltage power supply of the device integrates a constant-voltage and constant-current control circuit, a voltage-doubling rectifying circuit and a protective circuit; and the D / A converter controls output signals of the high-voltage power supply and controls the high-voltage power supply to output constant-current and constant-voltage signals. The method for testing the DC characteristics of a zinc oxide arrester by adopting the device comprises that: the high-voltage power supply outputs 1mA current signals in a constant-current way; a voltage collection circuit collects a voltage value of the tested zinc oxide arrester; the microprocessor control module calculates a value which is 0.75 time the voltage value; the high-voltage power supply outputs the voltage with the voltage value which is 0.75 time the collected voltage value in a constant-voltage way; the current signals are collected; and the electric property of the zinc oxide arrester is judged. All test items are automatically finished, which realizes the disassembly-free test and uninterrupted operation of the arrester and reduces the complexity of the test work.

The invention discloses a portable drawing board, which comprises a drawing board body, wherein one surface of the drawing board body is provided with a drawing board mechanism; the drawing board mechanism consists of a left groove, a right groove, an upper groove and a lower groove positioned on the surface of the drawing board; four corners on the other surface of the drawing board body are independently provided with a foldable telescopic supporting mechanism. The portable drawing board has the beneficial effects of simple structure and high practicality.

The invention discloses a test device for vadose zone water flow movement under different buried depths. The test device comprises a measurement cylinder, a balance cup connected to the measurement cylinder and a Mariotte flash connected to the balance cup. The measurement cylinder is internally provided with a weighing sensor, the upper end of the weighing sensor comprises an inverted filter and an undistributed soil column from top to bottom in order, a runoff drain pipe is connected to a position at an equal height to the undistributed soil column on the upper end of the measurement cylinder, a seepage drain pipe is connected to the inside of the balance cup, and the Mariotte flash is internally provided with a third hydraulic sensor for measuring the flow fed from the Mariotte flash to the balance cup. The test device can monitor the surface runoff, soil infiltration capacity and evaporation capacity at the same time, has the characteristics of simple structure and low cost, effectively improves the measurement accuracy, and is convenient to use and repair.

The invention discloses a novel colorimetric sensing method for dual pathogenic bacteria, and the novel colorimetric sensing method is used for supersensitive detection of salmonella and staphylococcus aureus. The method establishes an ultra-quick PCR reaction system, so that a conventional PCR process with consumed time of about three hours is reduced to 5 minutes, and therefore, consumed time ofPCR reaction is remarkably reduced; the ultra-quick PCR reaction system loads a nucleic acid self-assembly developing module, so that a reaction signal is amplified again, supersensitive detection ofpathogenic bacteria is favorably realized, and the problem that the conventional PCR results are difficult for visual detection is solved. Compared with a conventional method, the detecting method and a biosensor are quicker, are more sensitive, are stronger in specificity, and are high in sensitivity, and detected results are reliable, so that analyzing and detecting steps can be simplified, analysis time is shortened, and above all, online real-time detection is possible, therefore, carrying and field operating are convenient in the microbiological detection field of the food safety and quick detecting field, and the application prospect is very good.

Disclosed is a handheld sweet osmanthus flower harvesting device. The handheld sweet osmanthus flower harvesting device comprises a tree branch beating device and a sweet osmanthus flower storage device used to collect sweet osmanthus flowers which are beaten down, wherein the tree branch beating device comprises a support rod of adjustable height, an electromagnetic poke device is installed at the top of the support rod, the electromagnetic poke device comprises a direct current loop circuit formed by connecting a direct current power source, an electronic switch and an armature winding through a lead wire, the armature winding is placed between paired magnetic poles, a poke rod which can follow the armature winding to rotate is installed on a position of the outer side of the armature winding, which is located in the direction of the center axis of the armature winding, through a winding rotation shaft, the sweet osmanthus flower storage device comprises a sweet osmanthus flower collection cloth with a round hole in the center and sizing steel wires arranged on the periphery of the sweet osmanthus flower collection cloth, the sweet osmanthus flower collection cloth is provided with a seam which extends from the center to the peripheral edge of the sweet osmanthus flower collection cloth, and a plurality of pairs of magnets are evenly distributed on two sides of the seam. The handheld sweet osmanthus flower harvesting device is simple to carry and easily used for field work, can improves harvesting efficiency and harvesting quality of the sweet osmanthus flowers, and has obvious economic value.

The invention provides a portable insect catching net in order to reduce physical output of an entomological researcher during outdoor work. The technical scheme of the invention is that: the portable insect catching net comprises a net bag 1 and a telescopic net handle 6, and also comprises a circular arc-shaped telescopic rod and a movable ring 3, wherein the middle position of the circular arc-shaped telescopic rod is fixedly connected with the telescopic net handle 6 through a connecting bolt 5, the circular arc-shaped telescopic rod can stretch out circular arc-shaped slender rods respectively along the left end and the right end of the circular arc-shaped telescopic rod, the left circular arc-shaped slender rod and the right circular arc-shaped slender rod get in contact with each other to form a net ring 2 after running a circle, and are fixedly connected with each other at a contact position through a fixing bolt 4, the movable ring 3 is sleeved at the outer part of the circular arc-shaped telescopic rod, and can slide on the net ring 2 formed by the circular arc-shaped telescopic rod, a rim of the net bag 1 is connected with the movable ring 3, a fastening slit 10 is formed in the rim of the net bag 1 close to the fixing bolt 4, and a fastener 11 and a fastening hole are correspondingly arranged at two sides of the fastening slit 10. The whole insect catching net can be conveniently folded; as the inner part of the hard structure of the whole insect catching net is hollow, weight of the whole insect catching net is reduced; and moreover the portable insect catching net is simple to operate, and is convenient to carry.

The invention provides a field digital diagnosis recording instrument for soil Montessori color-texture (i-DSCT), and belongs to the technical field of soil environment investigating. The field digital diagnosis recording instrument for the soil Montessori color-texture (i-DSCT) has the functions of determining the color of the soil, determining the texture of the soil, and integrating under the GPS (Global Position System) positioning technology. According to the field digital diagnosis recording instrument for soil Montessori color-texture (i-DSCT), observed soil is imaged through a shooting sensor on a machine body, and the image is stored into the instrument; the information of the color and the granularity of the image is extracted, and compared with standard samples in soil color and texture standard storage modules in the instrument, thus the attribute value of an analyzed sample can be obtained, and all information in the instrument is displayed through an output control module and is output to an external computer; a control module is adopted to control a cursor on the machine body to move, and control to input other environmental attributes of the soil sample together with a confirming button, as well as controll to achieve man-machine interaction. With the adoption of the functions mentioned above, the color and texture of the soil sample and various soil environmental attributes can be intelligently diagnosed and recorded on real time in situ.

The invention discloses a hydraulic bending straightener which comprises a hydraulic cylinder and a bending assembly. The hydraulic cylinder is fixedly connected with the bending assembly. The bending assembly comprises a bending frame and a bending head. The bending head is fixedly connected with the hydraulic cylinder. The bending frame is provided with bending columns. The bending columns are fixedly connected with the bending frame. According to the hydraulic bending straightener, a power is supplied to the bending head through the hydraulic cylinder. The bending head, the bending frame and the bending columns on the bending frame cooperate for bending an article which requires bending, thereby facilitating field operation, facilitating bending at a random angle and a random height, and realizing convenient and quick use.

A GPIB hand device consists of liquid crystal screen, data and address buss, GPIB bus for connecting with external unit of GPIB, CPU connected to internal power supply, SDRAM, FLASH, MAC chip, CPLD chip, GPIB master control chip, driving chip of GPIB data bus and driving chip of GPIB bus control signal.

The invention discloses a cutter for machine clamping cutting of a round or ring-shaped sealing gasket to solve the problems that when sealing defects are treated emergently on the spot, especially, a damaged sealing gasket does not have a reserve part, maintenance personnel conduct manufacturing through manual shearing and cutting, the formed sealing gasket product has defects in quality, and efficiency is low. The cutter comprises a cutter fixing disc and is characterized in that a machine clamping handle rod is arranged in the center of the cutter fixing disc, and a positioning needle is arranged at the bottom end of the machine clamping handle rod; multiple sliding grooves are formed in the cutter fixing disc, inner diameter cutter frames and outer diameter cutter frames are arranged in the sliding grooves, and cutter blades are arranged at the bottom ends of the cutter frames; and multiple balance sliding wheels are arranged on the bottom face of the cutter fixing disc. Cutting of sealing gaskets of different sizes on the same machine is achieved, and cutting of plane sealing materials of different thicknesses is completed; the overall structure is simple, running is stable, operation is safe, the formed product is good in quality, the cutting efficiency is high, and maintenance is easy; and the cutter can be independently used and is convenient to carry, and convenience is provided for field operation.

The invention relates to a soil moisture content tester and a testing method thereof. The soil moisture content tester comprises a main engine, a probe, a WIFI module and a hand-held terminal module, the main engine comprises a central processing unit, a signal transmitting-receiving system, a central digital signal processing unit and a connector. The testing method includes that combining an adjustable multi-frequency point signal source with a vector receiving technology, measuring electromagnetic wave transmission characteristics, converting acquired information into distance domain through arithmetical operation, and obtaining the dielectric constant and moisture content of the soil around parallel transmission lines through data analysis and inversion. The soil moisture content testing for various non-specific types of soil does not need advanced calibration, the speed is fast, the precision is high, the practicability is strong, the repeatability is high, and any influence on the tested soil is avoided. The hand-held terminal module can store a lot of data and images, and the hand-held terminal module supports data playback and comparison functions, supports WIFI, GPRS and GPS or Beidou system function and realizes the spot real-time display, storage, remote sharing, reprocessing and precise positioning of measured data.

An intelligent device for measuring the seepage velocity of groundwater comprises a probe and an intelligent terminal device, wherein, the probe comprises a measurement / control component, a source-releasing device and a communication interface; the measurement / control component comprises NaI crystal, a photomultiplier and a control circuit; the photomultiplier, the source-releasing device and the communication interface are connected with the control circuit respectively; the probe is connected with a Bluetooth wireless communication device via the communication interface; the Bluetooth wireless communication device is connected with the intelligent terminal device on a Bluetooth communication basis. The intelligent device of the invention has the advantages of high measurement accuracy and high operating efficiency and greatly reduces the consumption of radioactive sources, thereby not only effectively protecting the environment, but also reducing the injury to human bodies caused by rays; the overall design of the probe reduces the number of the interfaces and effectively guarantees the safe and stable operation of the devices in well-logging; according to the design, the sources of the source-releasing device are symmetrically released, thereby achieving the purpose of uniform source-releasing; and Bluetooth-based wireless control and portable devices are adopted, thereby simplifying the devices and facilitating the field operation.

The invention provides a system and a method for realizing two-way short message communication between a Beidou terminal and a mobile phone. By using the system and the method, the two-way short message communication between the Beidou terminal and the mobile phone in a mobile phone signal coverage (2nd generation / 3rd generation (2G / 3G)) is realized, and a Beidou terminal user also can send position information to a mobile phone user, so that conventional communication, position monitoring, rescue and recourse and the like become flexible; and the system and the method are convenient to operate and high in applicability. The system provided by the invention comprises a mobile phone short message transceiving terminal, an information processing platform and a Beidou information transceiving terminal, wherein the information processing platform is respectively connected with the mobile phone short message transceiving terminal and the Beidou information transceiving terminal.

The invention discloses a digitizing automatic calibration device applied to a runway surface friction coefficient testing car, relating to calibration of a friction coefficient testing device. The calibration device is composed of a mechanical device, a control device and an onboard power supply, wherein the mechanical device is divided into an actuating mechanism and a support structure, wherein the actuating mechanism is composed of a motor-driven push rod and a pallet, and the support structure is composed of a roller wheel and a support; the control device is composed of a horizontal force sensor, a vertical force sensor, a conditioning circuit, a singlechip, a nixie tube display unit, a wireless remote controller and a control panel, i.e., a wireless remote transmitter. The calibration device carries out sampling, processing, displaying and control by a computer, and the precision of the calibration device completely satisfies the precision requirements of the runway surface friction coefficient testing car, thereby overcoming the disadvantages that a manual calibration method causes artificial reading errors, the precision grade of the calibration device or equipment is low and the operation of the whole calibration process is complex.

The invention discloses a self-propelled proportioning, stirring and pumping vehicle belonging to the technical field of building machinery equipment. A rack of the whole vehicle is arranged on a chassis of a truck; a cobble bin, a sand bin, a cement feeding device and a concrete pumping device are arranged on the rack of the whole vehicle; a sand screening device is arranged at the upper part of the sand bin; the cement feeding device is formed in a way that a cement hopper is connected with a material inlet of a stirrer by a conveying belt; the cobble bin, the sand bin and the cement hopper are provided with flow control gates; the stirrer is positioned below the cobble bin and the sand bin in the rack of the whole vehicle and is downwards communicated with a stirring hopper of the concrete pumping device; a pumping main body is fixed on the chassis of the truck by U-shaped clips. The vehicle has the beneficial effects that concrete stirring and pumping devices are arranged on the vehicle together so as to be transported to a construction site fast for operation, so that the field operation and flow construction can be facilitated, simultaneously the automation and the lighting of one-site concrete stirring are realized, the stirring quality is good, the proportioning metering is accurate, the pumping is smooth, the occupied land is small, the production efficiency is high, the use is safe, the maintenance is convenient, and devices can be dismounted randomly and can be used singly, so that the vehicle is relatively flexible.

The invention provides a skid-mounted passenger cabin which comprises a skid-mounted outer cabin and an inner cabin arranged in the outer cabin, wherein the outer cabin comprises a metal framework and a metal plate, the metal framework comprises eight upper beams, four outer cabin pillars and eight lower beams, the metal plate comprises an outer cabin top plate, four outer cabin side plates and an outer cabin floor, one ends of the side plates are hinged to the upper beams or the lower beams while the other ends are provided with multiple buckles, lock rings are arranged on corresponding positions of the upper beams or the lower beams, the outer cabin is fixedly connected with the inner cabin through fixing devices, the bottom of the inner cabin and the bottom of the outer cabin are fixedly connected, and the inner cabin is provided with a door and a window. The skid-mounted passenger cabin, disclosed by the invention, is convenient to remove, easy and reliable to use and light and smart in structure and can be overlapped mutually.

The invention provides an ultrafast PCR-based colorimetric sensing new method used for visible ultrasensitive detection of Hg<2+>. According to the method, an amplification primer and a template of anultrafast Polymerase Chain Reaction (PCR) are designed according to mercury ion thymine mismatch, a color development module is self-assembled through the primer by combining enzyme-linked nucleic acid, so that a new mismatch-based mercury ion target function nucleic acid detection method and a biological sensor are created. The detection method and the biological sensor are faster and more sensitive than traditional methods, have characteristics of strong specificity, high sensitivity, and reliable detection result, simplify analysis and detection steps, shorten analysis time, moreover, makeonline real-time detection possible, and are portable and suitable for field work, thereby having a bright application prospect in the field of heavy metal rapid detection.

The invention provides a ground source heat pump mounting auxiliary device, and relates to an auxiliary device for vertical burying of a ground source heat pump underground heat exchanger. The groundsource heat pump mounting auxiliary device is mainly composed of a bracket, an arc groove roller shaft, a handle, a driving wheel, a driven wheel, a supporting frame and the like. The ground source heat pump mounting auxiliary device can increase the burying speed of the ground source heat pump underground heat exchanger, can ensure the construction quality, and further has the characteristics ofbeing in simple in operation, capable of saving energy, convenient to operate in a field, low in cost, convenient to apply and popularize and the like. The ground source heat pump mounting auxiliary device can be widely applied to vertical burying of the ground source heat pump underground heat exchangers all over the country.