51 results about "Load unit" patented technology

The invention provides a calibration piece and a calibration method for a multi-port waveguide antenna test system, and a test method and a test system for a multi-port waveguide antenna, in the calibration piece, a positioning structure can ensure the repeatability of each connection, which is the premise of high-precision calibration, and the calibration accuracy is greatly improved. The load unit, the offset short circuit unit and the offset load unit are provided with a plurality of waveguide ports which are the same as those of a tested piece and can be directly butted, the internal structure of the waveguide port of the load unit is an antenna, electromagnetic wave energy can be radiated out instead of being absorbed internally, and high precision and stability of the load standard are guaranteed; according to the method, the reference surface can be determined at the interface of the tested piece, the calibration error model can be directly tested on the reference surface, the accuracy is good, and the solved calibration error model contains all time-varying characteristics of the whole test link during each calibration, so that the method can be used for frequently calibrating according to requirements, and the calibration accuracy is high. Measurement errors caused by temperature drift and link loss can be handled, and the efficiency is high.

The present invention provides a technique capable of reducing the time required for measurement while achieving high measurement accuracy. A metering device (1) is provided with a load unit (3) that transmits a load to a load cell (2), and a hanger (5) that is connected to a metering container (4) into which an object to be metered is inserted, and is provided with an upper sleeve-type member (61) and a lower sleeve-type member (62), which are elastic bodies, at a connection site between the hanger (5) and the load unit (3), and between the metering container (4) and the hanger (5). Impact load can be buffered, and vibration can be rapidly attenuated.

The invention relates to a sensing and control device (40) and method for a weight measuring device (30) comprising a loading unit for loading material to be weighed. In order to be able to measure accurately with less expensive components, the sensing and control device comprises an analog circuit (50) and a control circuit (60). The analog circuit (50) is configured to receive a weight measuring signal, to convert the received weight measuring signal into a first voltage signal, to subtract a second voltage signal from the first voltage signal when the loading unit is loaded with material to be weighed to generate a third voltage signal representing the weight of the material to be weighed, the second voltage signal representing the weight of at least the loading unit not loaded with material to be weighed. The control circuit (60) is configured to receive the first voltage signal when the loading unit is not loaded with material to be weighed, to convert the first voltage signal into a first digital signal, and to generate a pulse width modulation, PWM, signal having a pulse width, the pulse width representing the weight measured by the weight measuring device when the loading unit is not loaded with material to be weighed, and the control circuit is further configured to convert the third voltage signal into a second digital signal representing a weight measurement of the material to be weighed. The analog circuit (50) is configured to generate the second voltage signal from the PWM signal generated by the control circuit, wherein the voltage level of the second voltage signal is proportional to the pulse width of the PWM signal.

A storage facility (1) having a plurality of storage racks (R) and storage rack levels (3) for storage of load units (T), wherein two storage racks (R) have an aisle (2) between them, each storage rack level having running rails on the opposing faces of the storage racks (R), on which at least one storage and retrieval apparatus (5) may travel the length of the aisle (2). Each storage and retrieval apparatus (5) has a first set of four traveling wheels for traveling along the running rails horizontally along the respective storage rack level (3) of an aisle (2), and has climbing means for vertical movement, along vertical climbing chimneys. The climbing means of each storage and retrieval apparatus (5) include a set of four climbing wheels (16) being retractable between an extended engaging position for interaction with the vertical climbing rails and a retracted non-engaging position while travelling horizontally along the running rails along the respective storage rack level (3) and the storage and retrieval apparatus (5) has a power-take-up device (60) for contacting the bus bars (50) that is coupled to the retraction and extension movement of the climbing wheels (16).

1. Name of the product in this design: Load module cover (CP8523). 2. Application of this design: This design is used as a cover for a load unit or power supply. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a method and a system for automatically testing direct current parameters of an integrated circuit, and relates to the technical field of electronic component testing. The tested chip is connected with the test system master controller through the special test clamp, and the test system master controller is internally provided with an adjustable voltage source, an adjustable excitation source and an adjustable load. The test system controls and changes the voltage, excitation and load conditions of the tested device through an automatic test program, and controls the processing unit to collect and record data under the conditions. And after acquisition is completed, the test system analyzes the acquired data and finally automatically generates an integrated circuit direct current parameter test report. The system integrates a control processing unit, an adjustable power supply output unit, an adjustable excitation output unit, a signal exchange unit, an adjustable load unit, a transmission cable and a test clamp.

The invention discloses a battery expansive force equivalent test device and a test method. The battery expansive force equivalent test method comprises the following steps: step 1, setting independent operation parameters; step 2, performing loading, load holding and unloading tests on a battery pack shell by a loading unit according to the operation parameters; step 3, according to the cycle index in the step 1, circularly executing the step 2 and forming a maximum displacement curve of the cycle index; 4, obtaining a detection result according to the maximum displacement curve of the cycle index in the step 3; by extracting the maximum value of a displacement time curve and associating the maximum value with the cycle index, a maximum displacement curve of the cycle index is formed, and a detection result is obtained according to the maximum displacement curve, so that the limitation of traditional judgment depending on scattered and single cycle data is broken through, the maximum load-holding deformation of each cycle is systematically presented, and the deformation evolution characteristics of the shell are accurately captured; and full-cycle period visualization analysis is realized, and an actual cycle stress scene of the shell is fitted.

The utility model relates to a load-adjustable simulation load capable of independently testing a plurality of power supplies with the same voltage class, which comprises at least three load units with the same topological structure, and each load unit is configured to be formed by connecting at least two load branches in parallel. Each load branch is provided with a branch switch KMRn for controlling the branch to be loaded into the load unit where the branch is located and a resistive load Rn, and a contact at the parallel connection position of each load branch in each load unit serves as a wiring port of the load unit; the wiring port of each load unit is led out to serve as an external interface of an analog load, and the wiring ports of the adjacent load units are connected in parallel through an isolating switch; and the PLC is electrically connected with the controlled end of each switch to realize corresponding electric control.

The utility model discloses an uninterruptible power supply performance test circuit and an uninterruptible power supply performance test device. The test circuit comprises a load test loop which comprises a test connection terminal and a load unit; the test connection terminal is arranged in a power line and is used for being electrically connected with an uninterruptible power supply; the load unit is connected in series in a post-stage line of the test connection terminal. The control loop comprises a control unit, a mode switching unit and a load conversion unit; the mode switching unit is electrically connected between the commercial power and the test connection terminal; the load conversion unit is electrically connected to a load unit, and the load unit comprises at least two loads; the control unit is used for controlling the mode switching unit to switch a preset test mode for testing the uninterruptible power supply; wherein the preset test mode represents a power supply form for the load; and the control unit is also used for controlling the load conversion unit to convert the types of the loads electrically connected with the uninterruptible power supply. According to the technical scheme provided by the embodiment of the invention, the UPS can be subjected to performance test.

The application provides an integrated circuit carrying device. The integrated circuit carrying device comprises a loading unit and a wheel set. The loading unit comprises a loading space, a dust sticking component, a transmission component and a locking component. The dust sticking component is arranged at the bottom of the loading space. The transmission component is arranged above the dust sticking component. The transmission component is used to transmit a container loaded with integrated circuits into the loading space. The locking component is arranged at the entrance of the loading space. The locking component is used to limit the container. The wheel set is arranged below the loading unit.

A storage facility (1) having a plurality of storage racks (R) and storage rack levels (3) for storage of load units (T), wherein two storage racks (R) have an aisle (2) between them, each storage rack level having running rails on the opposing faces of the storage racks (R), on which at least one storage and retrieval apparatus (5) may travel the length of the aisle (2). Each storage and retrieval apparatus (5) having a first set of four traveling wheels for traveling along the running rails horizontally along the respective storage rack level (3) of an aisle (2) and has climbing means for vertical movement, along vertical climbing chimneys, that include vertical climbing rails (15). The climbing means of each storage and retrieval apparatus (5) include a set of four climbing wheels (16) for interaction with the vertical climbing rails (15). The storage and retrieval apparatus (5) has a drive means (70a) to drive the first set of wheels (10) for horizontal travel and a separate drive means (70b) for driving the climbing wheels (16) for vertical climbing travel or a single drive (80) for both horizontal and vertical travel, which can be switched between the wheels that are driven.

This invention relates to an atomizing device and a short-circuit protection method for the atomizing device. The atomizing device includes: a load unit and a load power supply unit for supplying power to the load unit according to its target power; an adjustment voltage generation unit for generating a corresponding adjustment voltage according to the target power of the load unit; a voltage feedback unit for generating a corresponding feedback voltage according to the real-time operating voltage of the load unit; and a controller for confirming whether the feedback voltage generated by the voltage feedback unit and the adjustment voltage generated by the adjustment voltage generation unit satisfy a preset relationship, thereby determining whether the load unit is short-circuited based on the confirmation result, and controlling the load unit to shut down when a short circuit is determined. The preset relationship includes the correspondence between the adjustment voltage of the adjustment voltage generation unit and the feedback voltage of the voltage feedback unit. Implementing this invention can improve the reliability of short-circuit detection and enhance the user experience.

The invention provides a micro-grid on-grid and off-grid all-condition simulation circuit, which comprises a data processing unit, a power grid architecture model, an energy storage unit model, a load unit model and a power supply unit model, and is characterized in that the power grid architecture model comprises a section I bus, a section II bus and a power transmission line; the energy storage unit model, the load unit model and the power supply unit model are configured in the range of the I-section bus and the II-section bus in a high-voltage direct hanging mode, and loads in the range of the I-section bus and the II-section bus are unequal. According to the invention, the source, the network, the load and the operation mode of the micro-grid are used as a whole for systematic testing for the first time, and the limitation of traditional single fault simulation is avoided. Potential risks such as grid-connected and off-grid switching failure and voltage collapse can be exposed in advance, and passive-to-active conversion is realized. A simulation result is directly used for guiding energy storage capacity configuration, protection constant value setting, control strategy optimization and equipment type selection, and the success rate and reliability of actual engineering are remarkably improved.

This variable gain amplifier includes: an amplification unit for amplifying an input signal and outputting the amplified input signal; a load unit which has a first end connected to an output end of the amplification unit; and a current control unit for controlling either an amplified current flowing through the amplification unit or a load current flowing through the load unit such that one is changed at a positive rate, and the other is changed at a negative rate.

The invention discloses a mechanical structure and method of a rapid remodeling tester for a three-type speed reducer, and belongs to the technical field of tester design. The tester comprises a driving unit, a transmission unit, a positioning unit and a load unit. The transmission unit comprises a main speed-increasing gearbox, a middle speed-increasing gearbox, a reduction gearbox and A-type and C-type speed reducer replacement gearboxes. The main speed increasing box is designed to have double output ends which respectively correspond to the input ends of the A-type speed reducer and the B-type speed reducer; the middle speed increasing box is connected with the A-type output and the C-type input; the reduction gear box reduces the output rotating speed to the working rotating speed of the load motor. And the positioning unit realizes accurate positioning and fixation of each component through a special bracket and an interchangeable follow fixture. Through the modularized and replaceable transmission chain design and the unified driving and load interface, the functions of rapid remodeling, independent testing or combined testing of A, B and C three-type speed reducers on the same test bench are achieved, the problem that multiple special test benches need to be built for testing of multi-type speed reducers is solved, the test efficiency is remarkably improved, and the test cost is reduced. And the construction and operation cost is reduced.

The invention relates to the technical field of verification equipment, in particular to an electric energy meter on-site verification device, which comprises a load unit comprising a shell; the mounting surface of the shell is provided with a probe unit, and the probe unit comprises a plurality of telescopic probes; a locking buckle and a locking buckle release switch are arranged on each of the two sides of the mounting surface of the shell, and the locking buckle release switches are in driving connection with the locking buckles and are used for driving the locking buckles to be clamped with clamping grooves in the two sides of the to-be-verified electric energy meter; a virtual load module and a real load module are arranged in the shell, the virtual load module and the real load module are respectively connected to one end of the change-over switch, and the other end of the change-over switch is connected with the probe unit; the shell is provided with an output port which is connected with the virtual load module and the real load module, and the technical problems that an existing electric energy meter verification device is single in function and tedious in use are solved.

The application discloses an output driving circuit, which comprises an input unit, a multi-stage output unit, a load unit, a feedback network, a bias network and a balance network; the input unit, the multi-stage output unit and the load unit are connected in sequence, the feedback network is connected with the output of the multi-stage output unit, the bias network is connected with the input unit and the multi-stage output unit, and the balance network is connected with the multi-stage output unit. The output driving circuit has the advantages of large output swing, high output bandwidth and good reliability.

Embodiments of the present application provide a data processing method, device, equipment, storage medium and program product. The method comprises: obtaining timing violation data of a target circuit; determining a target load unit from at least one load unit; wherein the target load unit is a load unit with the largest Manhattan distance from a driving unit; determining a first set and a second set according to the physical position of the target load unit; wherein the first set comprises the first physical position of the new driving unit and the physical position of at least one load unit; the second set comprises the physical position of the driving unit and the physical position of each load unit except the first set; and updating the wiring layout of the target circuit according to the first set and the second set. The method can realize intelligent segmentation of the load network, thereby solving the timing violation problem in the timing sign-off stage, significantly shortening the research and development cycle and reducing the labor cost.

The invention relates to a transfer device (12) for loading a load space (14), the transfer device (12) comprising a transfer unit (16) arranged to be transferred with load units (18) into and out from the load space (14) while the load units (18) remain in the load space ( 14 ), and a transfer actuator (20) connected to the transfer unit (16) for transferring the transfer unit (16), a plastic sliding surface (24) adapted to be placed against a base (100), the sliding surface (24) comprising discontinuities (26), and a locking actuator (28) for detachably connecting the trans fer actuator (20) to the transfer unit (16) via the discontinuity (26) for transmitting force to the transfer unit (16), wherein in the transfer device (12) said transfer unit (16) is supported on top of the sliding surface (24), and the transfer actuator (20) is arranged essentially parallel with the transfer unit (16) in the operating position below the sliding surface (24), and the transfer actuator (20) is adapted to transfer the transfer unit (16) cyclically, wherein each movement from the starting point into the load space (14) comprises several successive partial transfers in the same direction. The invention also relates to a system for loading the load space (14).

This invention belongs to the field of electric mechanism testing technology, and relates to an electric mechanism balancing detection loading device and method. The device includes: a loading unit and a control unit; the loading unit is used to load the electric mechanism under test; the control unit is used to control the loading unit to simultaneously collect the load and displacement of the electric mechanism under test; and to determine whether balancing is achieved based on the load and displacement of the electric mechanism under test. The loading unit includes: a reduction gear motor, a chain, a magnetic powder clutch, a rack, a displacement sensor, and a tension / compression sensor; the reduction gear motor drives the magnetic powder clutch through the chain; the magnetic powder clutch drives the rack, one end of the rack is connected to the loading platform via a displacement sensor, the other end of the rack is connected to the electric mechanism under test, and the other end of the electric mechanism under test is connected to the tension / compression sensor and then to the loading platform.

A storage facility (1) having a plurality of storage racks (R) and storage rack levels (3) for storage of load units (T), wherein two storage racks (R) have an aisle (2) between them, each storage rack level having running rails on the opposing faces of the storage racks (R), on which at least one storage and retrieval apparatus (5) may travel the length of the aisle (2). Each storage and retrieval apparatus (5) having a first set of four traveling wheels for traveling along the running rails horizontally along the respective storage rack level (3) of an aisle (2). Each storage and retrieval apparatus (5) has climbing means for vertical movement, along vertical climbing chimneys, that include vertical climbing rails (15). The climbing means of each storage and retrieval apparatus (5) include a set of four climbing wheels (16) for interaction with the vertical climbing rails (15). The storage facility additionally includes maintenance platforms (14) arranged in a maintenance area (14A) at the other side of the storage rack or side opposite to that where the climbing rails (15) are positioned.

This invention provides a disaster area power supply scheduling method and system based on V2G resources, relating to the field of electric vehicle technology. The method includes: acquiring the remaining power, location information, and response results to scheduling commands of multiple V2G electric vehicles within a target area; determining multiple target electric vehicles based on the remaining power, location information, distance between the disaster area power supply point, and response results; connecting each target electric vehicle to the disaster area distribution network; determining primary load units and multiple secondary load units according to the urgency of load unit restoration in the disaster area distribution network; allocating the electrical energy released by each target electric vehicle to the primary load unit; and allocating the electrical energy released by the multiple target electric vehicles to the secondary load units in sequence according to the restoration priority of each secondary load unit, thereby completing the disaster area power supply scheduling.

The invention discloses a load-adjustable alternating current and direct current arc generator and an arc simulation test method thereof. The load-adjustable alternating current and direct current arc generator comprises a main control unit, an optocoupler isolation driving unit, a silicon controlled rectifier unit and a load unit. The device is connected with a measured loop, the master control unit is used for setting parameters and outputting random PWM signals, the silicon controlled rectifier unit is driven to be conducted through the optical coupling isolation driving unit, the load unit generates large-current pulses simulating an electric arc, and accurate regulation and control over the intensity, duration and random fluctuation characteristics of load current are achieved; irregular fluctuation of a real arc can be accurately simulated, the arc detection capability of the arc fault protector in a detected loop can be effectively detected, and the operation is simple and convenient. Compared with a traditional mechanical adjustment method, the arc simulation test method provided by the invention is simpler, can directly simulate an arc current pulse, carries out an arc detection capability test on an arc fault protector in a detected loop in a targeted manner, and is high in test efficiency and wide in application range.

The invention relates to the field of space power supply and distribution, in particular to a load unit power distribution control method. In the spacecraft platform level, a first solid-state power controller and a first fuse are arranged in the spacecraft platform; wherein the first solid state power controller acts prior to the first fuse; in the test cabinet level, a second solid-state power controller with adjustable gears is arranged in the test cabinet, for each gear, the action time of the second solid-state power controller is inversely proportional to the overcurrent multiple, and the second solid-state power controller acts earlier than the first solid-state power controller; in the load unit level, a second fuse is arranged in the load unit, and the second fuse acts before the first solid-state power controller and after the second solid-state power controller. According to the invention, when a certain load unit in the test cabinet fails, the power supply of the load unit can be quickly cut off, and the failure is prevented from spreading to a spacecraft platform.

The invention relates to a computer-implemented method for preventing infeasible loading conditions in an aircraft before the aircraft is loaded. Given the layout of the load space and a set of load cells, the method estimates the loading condition and prevents the aircraft from being in an infeasible loading once it is loaded.

A power supply circuit may include a plurality of first switches, a plurality of second switches, and a third switch. The plurality of first switches may be in a one-to-one correspondence with the plurality of load units, and the plurality of second switches may be in a one-to-one correspondence with the plurality of load units. A first end of each first switch and a first end of the third switch may be connected to a first end of a direct current power supply, a second end of each first switch may be connected to a first end of a corresponding second switch and a first end of a corresponding load unit, a second end of each second switch may be connected to a second end of the third switch, and a second end of the direct current power supply may be connected to a second end of each load unit.

The invention relates to the technical field of integrated circuits, and provides a driving circuit and a chip, the circuit comprises an operational amplifier unit, a mirror current unit and a load unit; the output end of the operational amplifier unit is electrically connected with the control end of the mirror current unit, and the output end of the mirror current unit is electrically connected with the input end of the load unit; the load unit outputs driving signals with different driving magnitudes according to the mirror current of the mirror current unit; wherein the amplitude of the driving signal and the reference voltage received by the operational amplifier unit are in a first preset proportion. According to the drive circuit designed by the invention, circuit elements can be integrated in the same chip, and the amplitude of a drive signal is only determined by the size of a transistor in the mirror current unit and the resistance value of a load in the load unit, so that the amplitude of the drive signal output by the drive circuit is not affected by a process; and the amplitude and the driving size of the driving signal can be adjusted by adjusting the mirror current unit and the load unit, and the circuit is simple, easy to integrate and high in practical value and universality.