733 results about "Ampere-meter" patented technology

The invention discloses a thin layer liquid membrane measuring and controlling method of metal thin liquid membrane corrosion and an electrolytic bath device thereof. The thin layer liquid membrane measuring and controlling method of the metal thin liquid membrane corrosion comprises a method for measuring and controlling the thickness of an open liquid membrane and the thickness of a closed liquid membrane together and a method for separately measuring and controlling the thickness of the open liquid membrane. The electrolytic bath device adopted by the thin layer liquid membrane measuring and controlling method of metal thin liquid membrane corrosion comprises a screw micrometer, an external thread insulating rod, a platinum probe, an internal thread insulating tube, an electrode platform, an annular electrode, a circular electrode, an auxiliary electrode, an electrode loading platform, a container, a reference electrode and a zero-resistance ampere meter. The method is suitable for researching the corrosion electrochemical behavior of substrate metal in an environment that the open liquid membrane is related to the closed liquid membrane; simultaneously, the thickness of the open liquid membrane can be measured and controlled separately, so that the method is also suitable for researching the corrosion electrochemical behavior of substrate metal in an environment of the single thin layer liquid membrane.

The invention relates to an indoor vacuum electro-osmosis combined solidification tester. An anode iron wire is arranged around a main cylinder and is connected with electrode collars. The soil sample layer and the water storage layer of the main cylinder are communicated through a vertical drain pipe. The vertical drain pipe is covered by a layer of geotextile. A cathode iron wire is wound outside the geotextile. The cathode iron wire, the anode iron wire, an ampere meter and a power supply are serially connected to form a loop. Four rows of guide holes are centrosymmetrically arranged on a top plate at the upper part of the main cylinder. Hole pressure sensors, level sensors, surface settlement marks and layered settlement marks respectively penetrate through the four rows of guide holes. The sensors are connected with a computer through acquisition instruments. A water storage layer at the lower layer of the main cylinder is communicated with a gas-water separation device. The upper part of the gas-water separation device is communicated with a vacuum meter and a vacuum pump. The indoor vacuum electro-osmosis combined solidification tester can be used for conducting indoor exploration tests to different soil body samples through a vacuum electro-osmosis combined effect or a single effect, can monitor the real-time change situation of various parameters in soil samples in the process and can quantitatively analyze the solidification result.

The invention particularly relates to aging test equipment for electronic products. The aging test equipment comprises a test module, a main control system and a monitoring terminal. The test module is in signal connection with the main control system, the main control system is connected with the monitoring terminal, the test module comprises a plurality of alternating-current acquisition terminals, and the main control system comprises a service processing module. The service processing module comprises a main control panel, an FPGA, an ampere meter, a voltmeter and a switch module, wherein the FPGA is respectively and electrically connected with the ampere meter and the voltmeter through ports 458, the FPGA is electrically connected with the alternating-current acquisition terminals which are grouped and combined into a bus and are connected with the ampere meter and the voltmeter respectively, and the FPGA is connected with the main control panel through a serial port bus. The aging test equipment for the electronic products can adapt to the electronic products of different kinds and different powers, can test the electronic products uniformly in batch on a large scale, is high in aging test efficiency and can meet the industrialization demands.

The invention relates to electro-Fenton reaction waste water treatment equipment comprising electro-Fenton main equipment and an advanced reactor, wherein the electro-Fenton main equipment is internally provided with a first anode plate, a cathode plate and a second anode plate which are horizontally opposite, wherein both sides of the cathode plate are provided with extending cathodes, and the upper part is provided with a water outlet pipe connected with the depth reactor; the advanced reactor is internally provided with packing, an overflow pipe and a reflux pipe; negative poles of two DC power supplies are connected, and positive poles are respectively connected with a first anode and a second anode; an ampere meter respectively monitors working currents of the two DC power supplies; a water inlet pump, a reflux pump and a draught fan supply water and aerate from the bottom of the electro-Fenton reaction waste water treatment equipment; the first anode is a dimensionally stable anode with a titanium based surface coated with a stannum-antimony-iridium-tantalum composite oxide catalyst, and the second anode is a steel plate. When the electro-Fenton reaction waste water treatment equipment works, aerated air generates H2O2 in a cathode region and Fe<2+> in a second anode region, the H2O2 and the Fe<2+> form electro-Fenton reaction with waste water, organic pollutants contained in the waste water are degraded through hydroxyl radicals generated from the electro-Fenton reaction, the electro-Fenton reaction is continued after the H2O2 and the Fe<2+> enters the advanced reactor, therefore reaction retention time is ensured, and large-flow reflux is realized.

The invention relates to a stirring device for a soil body improvement test in the construction of a soil pressure balance shield. The stirring device can be used for an indoor stirring test for testing the frictional property and the stirring torque of a soil body. The device is characterized in that a beam is arranged above a frame-shaped bracket, and a motor, a motor transmission and an ampere meter are arranged on the beam; stirring buckets are fixed on a base, the base is arranged on the frame-shaped bracket, and stirring blades are arranged in each stirring bucket and connected with an output shaft of the motor through a rotating shaft; a series of fixing devices on which stirring buckets in different sizes can be arranged is arranged on the base, and the fixing devices can lift and horizontally slide through a lifting frame at the bottom of the bracket and a base rail; and a computer is connected with the ampere meter so as to record the change process of the motor current along with the time during the stirring process in real time. The invention is used for the indoor stirring test for testing the frictional property and the stirring torque of the soil body, is suitable for a plurality of soil layers and has the advantages of simple and convenient test procedure, real-time current change recording and favorable testing effect.

The invention relates to a charged droplet charge-to-mass ratio real-time measurement device easy to disassemble and assemble. The charged droplet charge-to-mass ratio real-time measurement device easy to disassemble and assemble is composed of a movable base, a support, a supporting board, hangers, an ampere meter tray, a balance tray and a Faraday cylinder. The support is fixedly installed on the base. The supporting board is installed at the upper end of the support. The hangers are installed on the supporting board. The Faraday cylinder and the hangers are connected in a fastened mode. The ampere meter tray is inserted in the middle lower portion of the support. The balance tray is arranged on the base. The height of the Faraday cylinder can be adjusted through the adjustment of the depth of an upper section aluminum tube inserted in a lower section aluminum tube and the angle of the Faraday cylinder can be adjusted through the adjustment of the positions of two sliding supports in the two hangers at the two sides. The charged droplet charge-to-mass ratio real-time measurement device easy to disassemble and assemble achieves the purpose that the charged droplet charge-to-mass ratio is measured in real time through the Faraday cylinder in various severe environments and has the advantages of being wide in application range, convenient to assemble, disassemble and move, low in cost and the like.

The invention belongs to the technical field of strain sensor production and relates to a bent flexible transparent strain sensor production method which includes that: camphorsulfonic acid is dissolved in deionized water to form a camphorsulfonic acid water solution, aniline monomers are filled into the camphorsulfonic acid water solution and then hydrogen peroxide is filled into the camphorsulfonic acid water solution to prepare polyaniline reaction liquid; a clean polyester film substrate is vertically immersed into the polyaniline reaction liquid to be soaked and then is taken out, is soaked in meta-cresol solutions and then is taken out, is rinsed through deionized water and is blown dry to obtain a polyaniline nanometer-film sample; the polyaniline nanometer-film sample is tailored to be square, is attached to a polyester film printed with electrodes and connected into a circuit and is packaged through a polydimethylsiloxane adhesive film; and a constant voltage power supply is connected with an ampere meter, and a bent flexible transparent strain sensor can be obtained. The production method is simple and reliable in principle, the produced sensor is good in transparent flexibility, unlikely to break, high in sensitivity, low in cost and environmentally friendly.

The invention discloses a box-type transformer which is high in safety and capable of achieving intelligent temperature control cooling. The box-type transformer comprises a base, a transformer box and a cooling box; the transformer box is fixed on the base, the cooling box is fixed at the top end of the transformer box and provided with a first cooling fan and honeycomb-type cooling holes, the base is provided with cooling through holes and a second cooling fan, and fixed feet are installed on the four corners at the lower end of the base; the transformer box is internally provided with a central processing unit and a transformer which is provided with a temperature sensor, the temperature sensor is electrically connected with the central processing unit, and the central processing unit is connected with the first cooling fan and the second cooling fan through a driving module in a driving mode; the transformer box is further provided with an ampere meter, a current signal time domain processing device, a signal processing device and a vibrating sensor. The box-type transformer can ensure safe and stable operation of the box-type transformer, the anti-theft capacity is high, and normal work of a power system is guaranteed.

The invention relates to a photoelectric response based method for identifying and detecting the vapor of an explosive. A device related to the method consists of a sensor, a light source, a power supply, an ampere meter, a signal processor and an alarm; the light source which can be periodically turned on and off and changed in light intensity is used for irradiating a single sensor with a quick photoelectric response; the change of a light current, which is caused as the vapor of the explosive is adsorbed on the surface of a sensitive material for the sensor is measured; the data processing is carried out through mode identification methods of principal component analysis, linear discriminant analysis, an artificial neural network and the like; a standard database of the responses of a sensor array to the vapor of explosives of different types is realized; through comparing the data processing result of a suspected explosive with the database, the purposes of identifying and detecting the vapor of the explosive is achieved finally. According to the method, by utilizing the photoelectric properties of the sensitive material, the structure of the sensor array is simplified while the detection limit is improved; the purpose of quickly identifying the explosive is realized by utilizing the sensitive gas-sensitive response and the quick photoelectric response of the sensitive material.

The invention provides a light weapon live ammunition shooting automatic target-reading device and working method and belongs to the automatic displaying and reporting technical field. The light weapon live ammunition shooting automatic target-reading device comprises a target sensor and the like. The target sensor comprises an electric conducting rubber plate A and an electric conducting rubber plate B, and the electric conducting rubber plate A and the electric conducting rubber plate B are insulated and in a parallel and overlapping state. The electric conducting rubber plate A is conductive, and a target shape picture is arranged on the outer layer of the electric conducting rubber plate A and directly connected with positive electrode of power; the electric conducting rubber plate B is resistive, and three electrodes are arranged on the edge position of the electric conducting rubber plate B and respectively connected with negative electrode of the power through three ampere meters; and data output ends of the three ampere meters are respectively connected with a computer. Due to complexity of an electric field formed by applying voltage on materials with same resistivity, resistance calculation between the electrodes is complex. Due to establishing of a resistance model between the electrodes and points of fall of the materials, numerical solution is obtained by solving the equation of Laplace, distance between the electrodes and the points of fall and relationship of the electrodes and the resistance can be obtained by fitting the numerical solution, and positions of the points of fall on the target can be determined. The light weapon live ammunition shooting automatic target-reading device and the working method achieve automatic target-reading and target-reading is accurate.

To provide a protection circuit for a load circuit which can distinguish between an overcurrent generated at a load and a rush current generated at the time of turning on a semiconductor switch or switches provided on the downstream side of the semiconductor switch and can turn the semiconductor switch off only when the overcurrent is generated to thereby protect the load circuit. A comparator CMP1 compares a detection current I1 detected by an ampere meter 15 with a threshold current Iref set in advance. When the detection current I1 reaches the threshold current Iref, the semiconductor switch 11 is turned off to thereby protect the load circuit. Further, a voltage Vd on an electric wire coupling between a battery VB and the semiconductor switch 11 is measured. When a counter electromotive force is generated and the voltage Vd reduces, the threshold current Iref is reduced according to the voltage reduction. Thus, at the time of the occurrence of a dead short, the detection current I1 immediately reaches the threshold current Iref to thereby turn the semiconductor switch 11 off. At the time of the generation of a rush current, since the detection current I1 does not reach the threshold current Iref, the generation of the erroneous turning-off can be prevented.

A terahertz wave detector comprises a chopper (1) and a polyethylene lens (2) and is characterized by further comprising a neon lamp (3), wherein the neon lamp (3), a direct-current power supply (4) and an ampere meter (5) form a closed loop circuit. The output end of the neon lamp (3), a capacitor (6), an amplifier (7) and an oscilloscope (8) or a phase-locked amplifier (11) form a closed loop circuit. The chopper (1) is arranged in front of the polyethylene lens (2), the neon lamp (3) is arranged at the focus position of the polyethylene lens (2), and a modulating signal of the chopper (1) is input into the oscilloscope (8) to serve as a reference signal. The terahertz wave detector uses the cheap neon lamp as a detecting element, thereby reducing the production cost and improving the response speed. In addition, a response wave band is wide. When the power of terahertz waves is high, the detector is not damaged, and an equilibration phenomenon does not occur.

The invention belongs to the aircraft engine test technology, and relates to improvement on a fault simulation device for a semi-physical simulation test. The device comprises a case in which a circuit board [1] is mounted, and an input socket [2] and an output socket [3] are also mounted on the case; the device is characterized in that each signal transmission line is connected with a cutoff relay in series, and comprises a signal detection circuit, wherein the cutoff relay comprises a normally closed switch; and the signal detection circuit is composed of n input switching relays, n output switching relays, 4 instrument switching relays, a voltmeter [5], a frequency meter [6], a resistance meter [7] and an ampere meter [8]. The device provided by the invention has signal detection capability and automatic fault test capability.

The invention relates to a gas sensor chip (P) and a measuring system (Q) of the gas sensor chip (P) as well as a manufacturing method of the gas sensor chip (P). The gas sensor chip (P) is a sensor which is used for preliminarily determining the freshness in the field of food, medicine and the like. The gas sensor chip (P) comprises a flexible substrate (1), flexible electrode pairs (2) arranged on the flexible substrate (1) and a sensing layer (3), wherein the sensing layer (3) is arranged between the flexible electrode pairs (2). In order to better apply the gas sensor chip (P) provided by the invention, the invention provides the measuring system (Q) comprising the gas sensor chip (P), a voltage source (9), an alarm circuit (8), an ampere meter (10) and a measuring electrode pair (11), wherein the voltage source (9), the alarm circuit (8), the ampere meter (10) and the measuring electrode pair (11) are connected in a measuring circuit in series, and the measuring electrode pair (11) is connected with the flexible electrode pairs (2) on the gas sensor chip (P). The manufacturing method provided by the invention greatly enhances the production efficiency of the gas sensor chip (P) and enlarges the application scope.

The invention discloses a fast measurement system, which is used for rapidly measuring a capacitor group on each bridge arm of an H-shaped bridge. The measurement system comprises a single-phase alternating-current power supply, a first ampere meter, a second ampere meter, at least one adjustable capacitor group and a processor, wherein the single-phase alternating-current power supply is used for supplying electricity to two ends of the H-shaped bridge; the first ampere meter is used for measuring a main current value of the H-shaped bridge; the second ampere meter is used for measuring an unbalance current value of the H-shaped bridge; at least one adjustable capacitor group is connected to the capacitors of the capacitor group in parallel; the processor is respectively connected with the first ampere meter, the second ampere meter and the adjustable capacitor group, and is used for emitting a control signal to adjust the electric capacity of the adjustable capacitor according to the main current value and the unbalance current value; and the processor can adjust the electric capacity of the adjustable capacitor group according to the relation between the main current value and the unbalance current value, and can rapidly measure a deviation value of the capacitor group on each bridge arm of the H-shaped bridge in the adjusting process according to the change rule of the unbalance current value.

The invention discloses a device for testing freezing resistance of salt storage asphalt mixtures and a testing method thereof. The device comprises a box body, wherein a door is formed in the front side of the box body; a bracket, a temperature acquisition probe, an electronic thermometer, a direct current power supply, an ampere meter, a refrigerating system, a metal positive electrode probe, a metal negative electrode probe and a container with a top opening are fixed in the box body; a display and a power main switch are arranged on the side surface of the box body; the upper end of the metal positive electrode probe, the upper end of the metal negative electrode probe and the upper end of the temperature acquisition probe are connected with the side surface of a cross rod; the temperature acquisition probe is connected with the input end of the electronic thermometer; the metal positive electrode probe is connected with the positive pole of the direct current power supply; the metal negative electrode probe is connected with the negative pole of the direct current power supply by virtue of the ampere meter; and the output end of the ampere meter and the output end of the electronic thermometer are connected with the input end of the display. According to the device disclosed by the invention, the freezing resistance of the salt storage asphalt mixtures can be accurately measured.

The invention discloses short-distance measurement method and structure of the grounding resistance of a grounding network. A current pole used for measuring the grounding resistance of the grounding network is arranged near the grounding network to be measured, even inside the grounding network; the current pole is used as a small grounding network to be measured, and the grounding resistance R pole of the current pole is measured by the traditional long-distance measuring method; finally, a test voltage is applied between the grounding networking to be measured and the current electrode, a test current between the grounding network to be measured and the current pole is measured by an ampere meter, and the total grounding resistance R (total) of the grounding network to be measured and the current pole is calculated by using the Ohm's law; and the grounding resistance R pole of the current pole is subtracted from the R (total) to obtain the grounding resistance R (network) of the grounding network to be measured. The invention not only can avoid the problems of long wire pay-off distance, large work load, easy interference production and the like, but also can avoid the technical difficulty that the measurement precision of the traditional short-distance measurement method can not satisfy actual requirements.

The invention provides an intelligent control system of a hydraulic gyratory crusher and belongs to a crusher control system. According to the intelligent control system, multiple operation indexes including the motor current, the size of a tight-side discharging hole, the thickness of a lining plate, the material level, the workload, the oil supply pressure, the oil supply temperature, the oil return pressure, the oil return temperature, the flow and the like are monitored by virtue of an ampere meter, a position sensor, a pressure meter, a thermometer and a flow meter in the hydraulic gyratory crusher in real time, are intelligently controlled by virtue of a PLC (Programmable Logic Controller) technique and are fed back to a visual interface in real time; a hydraulic lubricating system is controlled by virtue of a heater, a cooler, a filter, a stroke switch, a valve and the like to heat and cool an oil path or release and lock the oil path, so that the information is manually monitored in real time, multiple devices can be simultaneously controlled, and manpower and material resources are saved; by monitoring and analyzing the various operation parameters of the hydraulic gyratory crusher in real time, various risks and measures are omitted, and unattended crushing work is guaranteed.

The invention provides an infrared servo bridge type cutter control system. The system comprises a main control circuit, a power control circuit and a PLC control circuit; the main control circuit is connected with the power control circuit; the power control circuit is connected with the PLC control circuit; the main control circuit comprises a power supply circuit which is of a three-phase four-wire system power supply mode, a main power supply switch, an ampere meter, a voltage meter and a motor driving device; the main power supply switch, the ampere meter, the voltage meter and the motor driving device are arranged on the power supply circuit; the main power supply switch is arranged at the input end of the power supply circuit; two ends of the voltage meter are respectively connected to two of three phase lines, and the rest phase line is connected in series with the ampere meter; the motor driving device comprises a main cutter circuit, a servo motor circuit and an oil pump motor circuit. According to the system, the PLC controller and the servo drive are adopted to control a travelling motor and a slicing motor, so that the control precision is high, the electricity energy loss is reduced, and the production efficiency is increased; the utilization efficiency of a water source can be improved through a water valve switch.

The invention discloses a two-dimensional layered material-based avalanche field-effect transistor and a measurement device. The transistor comprises an insulation layer, a metal electrode layer, a two-dimensional material thin film layer, a two-dimensional material thin film layer and a two-dimensional material thin film layer, wherein the metal electrode layer comprises a drain electrode layer,a source electrode layer and a gate electrode layer, the two-dimensional material thin film layer and the two-dimensional material thin film layer are laid on the insulation layer, the two-dimensionalmaterial thin film layer is arranged between lamination parts, the source electrode layer covers a non-stack part of the two-dimensional material thin film layer, the drain electrode layer covers a part above the stack parts or the non-stack part of the two-dimensional material thin film layer, and the gate electrode layer is connected with the insulation layer. The measurement device comprises atwo-dimensional layered material-based avalanche field-effect transistor, a voltage source and an ampere meter. By the transistor, the sub-threshold swing of the field-effect transistor is reduced tobe smaller than 1mV/dec, and low power consumption is achieved; and moreover, the device size is reduced, and the device stability is improved.

The invention relates to a digital readout ampere meter for detecting a pulse current. The digital readout ampere meter comprises a current sensing unit, a signal preposing processing unit, an A/D converter (analogue-digital converter), a digital processing operation unit, a display screen, a key and a power source; a current sensor is connected with the signal preposing processing unit through a signal output interface, the signal preposing processing unit performs the distortionless amplification on an input electric signal and inputs the processed signal to the A/D converter, the A/D converter converts an analogue electric signal output by the signal preposing processing unit into a digital signal and sends the digital signal to the digital processing operation unit, and the digital processing operation unit is connected with the display screen and the key. The digital readout ampere meter can densely sample the instant values of currents at a high speed, and converts the instant values into the effective values of the currents by computation. The digital readout ampere meter has the advantages of convenience in use, accurate testing, and low power consumption, and is suitable for the current signal that has irregular waveform and cannot be measured by a traditional ampere meter, such as medical X-ray machine exposure currents.

The invention relates to a method for constructing an electro-catalytic bacterial biofilm at an anode of a microbial electrochemical reactor. The method comprises the following steps: firstly assembling the microbial electrochemical reactor and connecting with circuits, wherein the first path is formed by connecting a fixed resistor between the anode and a cathode in series, and the second path is formed by connecting a direct current stabilized power supply, an ampere meter, a variable resistor and a working contact of a cycle time relay between the anode and the cathode in series; then injecting a bacterial growth culture medium liquid into an anode chamber, inoculating a bacteria source, conducting the first path to carry out prestart on the microbial anode, measuring the anode potential change to obtain a polarization curve and determining an ultimate current value of the anode; and after electro-catalytic bacterial biofilm is stimulated by using ultimate pulse current to grow, successively obtaining a new ultimate current value again, then stimulating again under the new ultimate pulse current, repeating the steps till no significant growth of the ultimate current exists and finishing construction of the anodic electro-catalytic bacterial biofilm. The electro-catalytic bacterial biofilm can stably run under relatively high working current.

The invention discloses a mobile phone, which comprises a mobile phone interface, a resistor, a voltage detection unit and a current calculation module, wherein the mobile phone interface comprises an input port and an output port; the resistor comprises a first end and a second end, the first end is connected with the input port, the second end is connected with the output port, and the output port is also connected with reference voltage; the voltage detection unit is connected with the first end to detect voltage at the first end; and the current calculation module calculates a value of current flowing though the resistor according to the detected voltage and resistance of the resistor. Due to the modes, the mobile phone has a current measuring function, and can be convenient for a user to take along to measure the current by means of portability of the mobile phone, the current can be measured without an ampere meter, and the mobile phone has the advantage that: the mobile phone is convenient and practical.