58 results about "Multimeter" patented technology

This utility model discloses a measuring component for control board production, relating to the field of measurement technology for control board production. The measuring component includes a multimeter, a support frame on one side of the multimeter, an adjustment mechanism on one side of the support frame, and a positioning mechanism on one side of the support frame. In use, the multimeter is first placed on one side of the support frame, supported by a support plate. Two measuring probes on one side of the multimeter are placed inside connecting cylinders on both sides of the support frame. An adjustment mechanism is connected to one side of the support frame via a groove, and the positioning mechanism is connected to the adjustment mechanism. The positioning mechanism facilitates quick clamping and positioning of the control board, while the adjustment mechanism allows for easy adjustment of the position of the positioning mechanism.

The application provides a kind of test equipment for measuring buffer tape for high-voltage cable and its detection method, relating to the field of high-voltage cable auxiliary material detection, comprising: support, copper plate one, lifting device, copper plate one is arranged on the upper part of the support, the lifting device is arranged on the bottom of the support through insulating spacer, copper plate two is installed on the lifting platform of the lifting device;The insulating column is fixed through copper plate one, the measuring rod of the dial gauge is through the insulating column, the height of the measuring rod in the insulating column is adjusted by the limiting device, a plurality of insulating columns correspond to a plurality of dials;The upper terminal post is electrically connected with copper plate one, the lower terminal post is electrically connected with copper plate two, the upper terminal post and the lower terminal post are respectively electrically connected with the corresponding detection terminals of the multimeter, for connecting copper plate one and copper plate two into volume resistivity detection loop. Through the process of repeatedly adjusting the compression thickness, measuring resistance and calculating resistivity, a plurality of sets of volume resistivity data under different compression states can be obtained.

1. Name of the product in this design: Digital Multimeter (MY8333). 2. Purpose of this design: for measuring voltage, current, resistance, frequency, temperature, capacitance, etc. 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.

A system, method, medium, and electronic device for testing seismic data acquisition devices are disclosed. The system includes: a signal generator, a digital multimeter, at least one seismic data acquisition device, a connector, and a host computer. The signal generator generates electrical signals; the digital multimeter measures electrical parameters in the test circuit; the seismic data acquisition device performs corresponding processing operations on its input signals in its current test circuit and transmits the results of the processing operations to the host computer; the connector controls the state of each relay in the relay group to form a test circuit for the current test index; the host computer sends test control commands and determines the test results of the seismic data acquisition device for the current test index based on the received information. This disclosure facilitates convenient and accurate testing of various indicators of seismic data acquisition devices, thereby improving the testing efficiency and reliability of test results.

This invention discloses a simple, rapid, and low-cost method for determining the initial melting point of ceramic materials, comprising the following steps: preparing a powder for molding; filling the powder into a metal mold, simultaneously inserting high-temperature wires into both ends of the deposited powder to prepare a test sample with wires embedded at both ends of the green body; placing the test sample inside the furnace chamber of a high-temperature electric furnace, leading the wires connected to both ends of the green body to the outer wall of the high-temperature electric furnace, and then connecting the connected high-temperature wires to a multimeter to form a complete circuit; starting the high-temperature electric furnace program, and the data acquisition system connected to the multimeter records the measured high-temperature resistance in real time; plotting a temperature-resistance curve based on the data recorded by the data acquisition system, and the temperature of the first abrupt change point corresponding to the curve is the initial melting point of the ceramic material. This testing method is not limited by predicting the temperature and high-temperature resistance of the target material, and the detection method has the characteristics of low cost, high accuracy, and simple and rapid testing.

The application discloses a high-speed train socket phase and plug-in force comprehensive detection device, which comprises a device shell body; a quick plug module is internally installed in the device shell body; and a sensor fixing bolt is threadedly connected to the inside of the device shell body. The high-speed train socket phase and plug-in force comprehensive detection device and detection method integrate voltage / frequency measurement, phase detection and plug-in force measurement into a single portable device through integrated design, realize 'one plug and one screen display', save the trouble of carrying a multiset of tools such as a multimeter and a plug-in force tool for maintenance personnel, avoid high-intensity operations such as repeated bending and moving for debugging in a narrow space of a carriage, greatly improve the maintenance efficiency (76% less time-consuming compared with a traditional process), reduce the labor intensity, and effectively optimize the allocation of human resources.

This utility model provides a resistance aging tester, belonging to the technical field of testing instruments. It includes a main housing, with a multimeter embedded on one side. Storage grooves are formed on both sides of the bottom inner wall of the main housing. A circuit frame is fixedly connected to the top of the inner wall of the storage grooves, and a connecting wire is embedded in the middle of the circuit frame. A first torsion spring tension shaft is fixedly connected to one side of the circuit frame, and a second torsion spring tension shaft is fixedly connected to the other side. The connecting wire is wound around the outer walls of the first and second torsion spring tension shafts. L-shaped limiting grooves are formed on both sides of the bottom of the multimeter, and the L-shaped limiting grooves are sealed and connected to the storage grooves. A test connector is fixedly connected to one end of the connecting wire, and the test connector is located within the L-shaped limiting groove. This utility model provides a resistance aging tester that, by flipping the dust cover to the other side of the main housing and flipping the support plate hidden in the groove, forms a support structure with the dust cover, allowing the equipment to be erected for voltage and current testing.

This utility model relates to the technical field of power distribution line testing equipment, and proposes a power distribution line leakage detection and accurate marking device, including a fixing mechanism. A multimeter body is arranged above the fixing mechanism, and a marking tape placement mechanism is fixedly connected to one side of the fixing mechanism. By setting a movable first clamp and a second clamp, the device can fix a multimeter body of various sizes. By setting an elastic band, it is easy to fix the device to the user's wrist, making it easier for workers to detect leakage devices during work. By setting a marking tape placement mechanism on one side of the fixing mechanism to mark the leakage wire instead of a marking device, there is no need to carry an additional marking device, which improves the convenience of use. Moreover, the length of the marking tape body can be cut according to the needs of use.

1. The name of the design product: multimeter. 2. The use of the design product: multifunctional multimeter for measuring voltage, current and resistance. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This invention provides a fault detection device for an automotive air conditioning compressor, relating to the field of automotive air conditioning compressor testing technology. It includes a housing, within which a control structure and two multimeters are installed. A fan is mounted on the lower side of the housing, and a blowing structure and three wiring structures are mounted on one side of the housing. The wiring structures correspond to the control structure and the multimeters, and the blowing structure corresponds to the wiring structures. Each wiring structure has a connector, a first snap-fit ​​structure between the connector and the wiring structure, an insulation structure inside the connector, and a second snap-fit ​​structure between the connector and the insulation structure. In this invention, by installing the control structure and two multimeters inside the housing, the resistance between the terminals can be detected using the two multimeters, improving detection efficiency. Furthermore, by using the wiring structures for detection, only one wiring is required; by sequentially using different multimeters to test the resistance data between different terminals, rewiring is unnecessary.

This invention belongs to the field of electronic testing equipment technology, specifically disclosing a power-connecting probe and a multimeter. The power-connecting probe includes: a probe body having a probe extending along a first direction; an adapter frame having a mounting hole extending along the first direction, the adapter frame being mounted on the probe body, and the probe passing through the adapter frame; and an adapter pin mounted within the adapter frame, one end of which is connected to the probe, and the other end extending out of the adapter frame, the cross-sectional diameter of the adapter pin being smaller than that of the probe. Compared to existing technologies, this application achieves efficient, accurate, and non-destructive measurement of small terminals through a matching structure of the probe, a detachable adapter frame, and a small-diameter adapter pin, combined with elastic clamping and buffer compensation design.

This utility model belongs to the field of devices for testing electrical performance, and particularly relates to an electrical safety testing device. To broaden its applicability, this utility model proposes an electrical safety testing device. The electrical safety testing device includes a multimeter and two test heads, as well as two clamps for holding the object under test. Each test head includes a test probe electrically connected to the multimeter via a wire, a cylinder fitted over the test probe and fixedly connected to different clamps, a push rod with one end extending into the cylinder for pushing the test probe out of the cylinder to contact the object under test during measurement, and a locking assembly for locking the push rod. A through hole is provided on the side wall of the cylinder. The locking assembly includes a locking rod, a locking element, and a reset elastic element. The locking rod passes through the through hole, the locking element is located inside the cylinder and connected to the locking rod, and the push rod has a locking part that matches the locking element. The two test heads are independently set up, facilitating their entry into confined spaces and thus broadening their applicability.

This application provides a cable continuity testing device and system. The cable continuity testing device has at least one set of cable connectors on its housing. Each set of cable connectors includes a first connector and a second connector of different models. The first connector corresponds to the interface at the first end of the cable to be tested, and the second connector corresponds to the interface at the second end of the cable to be tested. Thus, the interfaces at both ends of the cable to be tested can be connected simultaneously through one set of cable connectors, improving the efficiency of cable continuity testing and avoiding the possible testing errors that may occur when checking each jack in the interfaces at both ends of the cable one by one with a multimeter, thereby improving the accuracy of cable continuity testing. The continuity test results of the cable to be tested are displayed by a display module set on the housing of the continuity testing device, which makes it easy for users to intuitively observe the continuity status of the cable to be tested and reduces the difficulty of operating the cable continuity test.

The application discloses a kind of drilling multi-angle directional jet slotting device and method, the device includes multimeter, and sequentially connected: directional device, anchoring slotting device, fixed-rotation dual-purpose joint, multimeter is electrically connected with directional device for calculating rotation angle by measuring resistance value.This application uses fixed-rotation dual-purpose joint to realize that jet slotting nozzle rotates with drill pipe or is fixed as axial movement, can be oriented slotting at any design angle in drilling hole;Using directional device realizes the rotation angle orientation function under the condition of different drilling angle;Using anchoring slotting device can carry out slotting to drilling hole under the condition of rear-end drill pipe rotation, and the coal cinder generated in slotting process is discharged in time, avoid the problem of hole blocking caused by poor drainage of drilling hole, by using this directional device and directional slotting method, greatly facilitate the guiding effect of coal seam slotting permeability and induced fracturing, can optimize slotting effect on the basis of saving slotting workload.

Methods and systems include a probe configured to measure a vibration of a machine, an extension cable coupled to the probe having a male coaxial connection, and a probe resistance measurement tool having a female coaxial connection configured to connect to the male coaxial connection of the extension cable. The probe resistance measurement tool is configured to measure a circuit resistance value of the probe and the extension cable while connected. The probe resistance measurement tool includes a first connection point and a second connection point. The system further includes a multimeter including a first lead connected to the first connection point and a second lead connected to the second connection point of the probe resistance measurement tool. The multimeter is configured to receive the vibration measured from the probe.

1. The name of the design product: multimeter (DMT-A100). 2. The use of the design product: for measuring voltage, current, resistance, capacitance and other electrical parameters. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model relates to the technical field of measurement auxiliary, concretely is a kind of aviation signal assembly's conduction measurement auxiliary device, including base, multimeter, setting on the measurement component of base, the digital display meter of setting on the measurement component, the positioning recess is provided on the base, the measurement component is located the positive upper side of positioning recess.The utility model provides a kind of aviation signal assembly's conduction measurement auxiliary device, solves the existing signal component measurement stroke manual pressing, depth gauge measurement, artificial interpretation error is big, the problem of low work efficiency, by setting the measurement auxiliary device according to the appearance design of signal component, so that the utility model can realize accurate measurement, automatic reading to facilitate the maintenance of product, improve maintenance efficiency and quality.

The utility model relates to three operational amplifier subtraction operation circuit device, its circuit actual object can adopt high -quality PCB welding technology to integrate each component and its connecting circuit, to ensure that circuit connection is stable and reliable, solve the time -consuming and labor -intensive problem when student builds the circuit, form the flexible and efficient special experimental circuit board of wiring. A plurality of test points are reserved on the circuit, can be convenient for student to use multimeter, oscilloscope and other instruments real -time measurement each node's voltage, current and the like parameter, be convenient for observation circuit dynamic change, and the design of gain regulator and connector makes student can conveniently adjust the gain of circuit, studies the influence of gain on circuit performance, simultaneously, this design also is convenient for teacher to demonstrate on the classroom, through the regulation gain, intuitively shows the influence of gain on output signal amplitude, deepens the understanding of gain concept of student, improves teaching use efficiency.

1. Name of the product in this design: Multimeter (Small). 2. Purpose of this design: For measuring current, voltage and resistance. 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 rendering 1.

The utility model relates to the technical field of conductivity measurement, especially pure water conductivity measuring device, pure water conductivity measuring device, including power supply, transformer, positive pole metal stick, negative pole metal stick and multimeter constitute, be provided with safety detection module on the negative pole metal stick, safety detection module includes mounting sleeve, insulated handle, electric capacity response film and insulating cover, by adopting above -mentioned technical scheme, when someone holds the insulated handle, will press electric capacity response film, through the inductance of pressing area, can know whether in the state of hand holding, under the state of hand holding feedback to control system, prevent the start of equipment, especially the start of transformer, can play to thereby reduce the risk of electric shock from the source, provide more safe and reliable guarantee effect for pure water conductivity measurement work.

The utility model discloses a kind of multimeter lead storage device, belong to multimeter lead storage technical field, including two fixed plates in the one side of multimeter, the top of two fixed plates is all set with placing groove, winding lead test pen is placed into placing groove, one side of one fixed plate is set with avoid slot, and the lead connected with the one end of test pen will pass through avoid slot, welding has connecting frame between two fixed plates, the top of connecting frame is equipped with the limiting component of the fixed test pen, the utility model is used in the cooperation of fixed plate and multiple components, can be stored to test pen and lead, so that lead will not contact with ground or desktop, to avoid lead abrasion, improve the service life of lead, by being equipped with protective cover, the connecting place of test pen and lead can be protected, can avoid foreign matter directly contact with lead, improve the protection effect of device.

The application discloses a kind of high temperature high pressure conditions LVDT sensor's calibration device, comprising: high-precision motion test system, including slide rail, mobile device and high-precision displacement acquisition device;Dynamic sealing assembly, including sealing joint and mobile slide bar, sealing joint is installed in one end of superhigh pressure vessel, mobile slide bar is axially arranged in sealing joint and inner end is connected with the LVDT sensor to be calibrated in superhigh pressure vessel, the outer end of mobile slide bar is connected with displacement driving device;Displacement driving device is used to drive mobile slide bar and mobile device synchronous movement;Pass through cabin joint assembly, installed in the other end of superhigh pressure vessel, signal line is connected with high-precision multimeter after passing through cabin joint assembly;Heating assembly and pressurizing device are used to heat the interior of superhigh pressure vessel to target temperature and pressure respectively.The application can directly establish the accurate corresponding relationship between displacement and analog signal and obtain calibration coefficient, realize the direct calibration of LVDT sensor linearity and error value under high temperature high pressure conditions.

This invention provides a tool for testing the insulation resistance of a sealed end face of an aircraft, including a contact panel, a handle, a multimeter, a first test lead, and a second test lead. The contact panel includes a first contact surface and a second contact surface. The first contact surface is attached to the lower surface of the sealed end face, and the second contact surface is connected to the handle. One end of the first test lead is connected to the second contact surface, and the other end is connected to the multimeter. One end of the second test lead is connected to the upper surface of the sealed end face, and the other end is also connected to the multimeter. One end of the first test lead connected to the second contact surface includes multiple first mounting contact points, and one end of the second test lead connected to the sealed end face includes multiple second mounting contact points. By having the contact panel parallel to the sealed end face being measured, compared to the testing method using a test pen, the contact panel fully covers the sealed end face being measured during the test, improving the accuracy of the measurement data and reducing the potential risk of the test pen damaging the sealed end face.

The application relates to a range-adaptive inductance measurement circuit, method and multimeter, the circuit comprising: a signal generation circuit connected at two ends of an inductance to be measured and a range switching circuit, and a processor connected with the signal generation circuit and the range switching circuit; wherein the signal generation circuit is used for outputting an alternating current signal or a direct current signal; the range switching circuit is used for range switching; and the processor is used for obtaining an inductance value of the inductance to be measured according to an alternating current input resistance corresponding to the inductance to be measured when the signal generation circuit outputs the alternating current signal and a direct current input resistance corresponding to the inductance to be measured when the signal generation circuit outputs the direct current signal, and controlling the range switching circuit to perform range switching according to the inductance value. The circuit can realize range-adaptive inductance measurement, solves the problem of low inductance detection efficiency caused by manual range adjustment in the prior art, and has the advantages of simple structure, improved production test efficiency and reduced industrial cost.

This utility model discloses a 10kV relay inspection device, belonging to the field of relay inspection technology. It includes a multimeter body, a baffle fixed to the bottom end of the multimeter body, a mating plate fixed to the front top of the baffle, and a protective cover slidably fitted on the outer side of the multimeter body. A mating groove adapted to the mating plate is opened on one end of the protective cover facing the mating plate. When using this 10kV relay inspection device, after the protective cover is slid away from the baffle and moved to its end, and with the help of the transmission column and transmission groove, the protective cover is opened to its limit. At this time, the gear plate moves downward under the cooperation of the transmission column and transmission groove, and drives the gear, thereby causing the rotating shaft to rotate the supporting outer rod at a fixed angle, forming an obtuse angle with the rear side wall of the multimeter body. This satisfies the requirement that the multimeter body is tilted when placed on a flat surface, meeting the needs of inspectors.

The application relates to the technical field of industrial visual inspection, and discloses a digital multimeter reading recognition method, which comprises the following steps: fixing a to-be-recognized digital multimeter at an industrial monitoring station, so that the display screen of the digital multimeter faces an RGB camera, a depth camera and a six-axis IMU sensor coordinated by a hardware synchronous triggering unit; synchronously collecting and constructing a multi-modal image set aligned in time and space; performing three-level adaptive environment compensation processing on the multi-modal image set to output compensated multi-modal data; calling a lightweight multi-modal time sequence fusion network embedded with a channel and space double attention mechanism, inputting the compensated data for end-to-end recognition, and outputting a positioning frame, recognized reading and confidence; performing post-processing on a heterogeneous computing pipeline accelerated by a CPU multi-thread and a GPU, dynamically adjusting a frame rate, controlling an end-to-end time delay to be less than or equal to 250 milliseconds, and transmitting the final reading to an industrial monitoring terminal. The application can continuously output a reading result with high reliability.