45 results about "Voltage sensing" patented technology

The application provides a pressure signal fitting method and device, the method comprises: applying pressure to each sensing point in a pressure sensor, measuring the relationship between pressure and resistance of each sensing point, and integrating to obtain the pressure-resistance relationship; the pressure-resistance relationship is corrected through a numerical filtering algorithm, and the corrected pressure-resistance relationship is fitted to obtain an optimized pressure-resistance relationship; the switching of the voltage sensing circuit sensing points is carried out through an integrated analog electronic switch, the voltage of the stressed multiple array sensing points is measured; the resistance of the multiple array sensing points is calculated according to the measured voltage combined with the acquisition circuit; and the pressure of the multiple array sensing points is calculated through the optimized pressure-resistance relationship; based on the area of the stress area and the non-stress area of the multiple array sensing points, the actual stress of the multiple array sensing points is calculated through the relationship between force and pressure.

A thermostat with voltage and current sensing capability is coupled directly to an HVAC unit and provides low latency failure detection and control using an on-board CPU. The thermostat can be configured to detect failure modes using current and voltage sensing and to make autonomous decisions to control the HVAC in response to such measurements.

A system (12) for a vehicle, an assembly (10), and a method for detecting a connection state of a switching device (62) of a charging circuit (56) are provided. The system (12) comprises at least one stator coil (30) of an electric machine (18), an inverter (16), and a charging circuit (56). The inverter (16) is configured to be coupled to a battery (14) of the vehicle. The charging circuit (56) is configured to be coupled to a charging device external to the vehicle. The charging circuit (56) is further configured for adapting a charging program of the battery (14) of the vehicle. The charging circuit (56) comprises at least a capacitor (64) and the switching device (62). The switching device (62) is arranged between the capacitor (64) and the stator coil (30). A single voltage sensing element (66) is arranged between the switching device (62) of the charging circuit (56) and a star point (60) of the electric machine (18). A control circuit (36) is configured to detect the connection state of the switching device (62) of the charging circuit (56) based on a voltage magnitude measured by the voltage sensing element (66).

A water-quality detection apparatus includes a detection chamber device, a pump module, a light source, a light sensor and a controller. The pump module is configured to transport a to-be-tested liquid and a reagent to a detection chamber of the detection chamber device. The light source emits detection light to the detection chamber. The light sensor senses the detection light traveling through the detection chamber and generates a detection voltage. The controller performs the following procedures: a voltage sensing procedure, a dilution determination procedure, a dilution procedure and a concentration acquisition procedure. The dilution determination procedure may calculate a voltage ratio between the detection voltage value and a basic-voltage value. When the voltage ratio is greater than a critical value, the concentration acquisition procedure is performed. When the voltage ratio is not greater than the critical value, the dilution procedure is performed.

An electricity meter is disclosed. The electricity meter comprises at least one current sensing device configured to sense an electrical current at a first terminal of the meter. The electricity meter comprises at least one voltage sensing device. The electricity meter comprises an actuatable device coupled to the voltage sensing device and selectively configurable between a first state and a second state. In the first state the at least one voltage sensing device is configured to sense a first voltage between the first terminal and a second terminal of the meter. In the second state the at least one voltage sensing device is configured to sense a second voltage between the first terminal and a test point of the meter.

An analog-to-digital converter circuit usable for measuring a voltage having a large common-mode voltage includes two input voltage nodes, a voltage sensing circuit (that includes a sigma-delta modulator) that senses a voltage between the nodes, a digital filter that outputs a multi-bit digital value, and an input current cancellation circuit. The input current cancellation circuit supplies / draws cancellation currents to / from the nodes to compensate for currents drawn from / supplied to the nodes by the voltage sensing circuit. The input current cancellation circuit includes a digitally-programmable digital processing circuit and a current canceling circuit. In one example, the digital processing circuit includes a sigma-delta modulator that transforms a single-bit digital signal output by the voltage sensing circuit into a single-bit digital signal that drives the current canceling circuit. The transfer function of the current compensation loop is programmable and adjustable by loading digital trim values into the circuit.

This invention discloses a method for leading-edge signal detection and frame synchronization in the MAC layer of a battery cell pressure sensing network. By employing a frame start delimiter (SFD) leading-edge signal vector detection optimization algorithm, the efficiency and accuracy of leading-edge detection are improved. Algorithms such as sliding window analysis, noise likelihood function, and leading-edge likelihood function are used to accurately detect the leading-edge signal vector, further enhancing detection efficiency and accuracy. Simultaneously, the Bayesian likelihood ratio method is used for leading-edge signal vector detection, significantly reducing the false positive and false negative rates and increasing the reliability of the detection results. This invention enables rapid leading-edge signal vector detection and frame synchronization, improving the real-time performance of data transmission and making it suitable for applications requiring high real-time performance, such as lithium battery management systems. The method proposed in this invention can be widely applied to the MAC layer of battery cell pressure sensing networks, providing strong support for establishing more efficient and reliable sensor network communication.

A system (12) for a vehicle, an assembly (10), and a method for detecting the connection state of a switching device (62) of a charging circuit (56) are provided. The system (12) comprises at least one stator coil (30) of an electric machine (18), an inverter (16), and a charging circuit (56). The inverter (16) is designed to be coupled to a battery (14) of the vehicle. The charging circuit (56) is designed to be coupled to a charging device outside the vehicle. The charging circuit (56) is also designed to adapt a charging process of a battery (14) of the vehicle. The charging circuit (56) comprises at least one capacitor (64) and a switching device (62). The switching device (62) is arranged between the capacitor (64) and the stator coil (30).A single voltage sensing element (66) is arranged between the switching device (62) of the charging circuit (56) and a star point (60) of the electric machine (18). A control circuit (36) is designed to detect a connection state of the switching device (62) of the charging circuit (56) based on a voltage quantity measured by the voltage sensing element (66).

A configuration for sensing current with higher accuracy is provided when a shunt resistor is arranged and connected between plate-shaped wiring, such as busbars or conductor frames. A current sensing device comprises: a resistor with a laminated structure, including a plate-shaped first electrode, a plate-shaped second electrode, and a plate-shaped resistive element arranged between the first and second electrodes; and a plate-shaped first conductor and a plate-shaped second conductor connected to the resistor, through which the current to be measured flows.The first conductor is connected to the first electrode, the second conductor is connected to the second electrode, the resistor is laminated between the first conductor and the second conductor, and a first insulating layer and a first voltage sensing pattern for transmitting a voltage signal are provided on a surface of the first conductor, the first voltage sensing pattern being formed by means of the first insulating layer.

This application provides a nanoprobe-based electrophysiological signal and biochemical biomarker detection system, comprising: a patch-clamp amplifier; a working electrode electrically connected to a signal acquisition module, the surface of which, except for the tip, is covered by an insulating protective layer, forming a GΩ-level impedance seal after implantation into the cell; a counter electrode connected to a BATH port, with its active end placed in the matrix environment of the target cell, forming a current loop; a reference electrode connected to a REF port, with its active end placed in the matrix environment of the target cell to provide a potential reference point; the patch-clamp amplifier is configured to operate in voltage-clamp mode, with the REF port connected to the reference electrode as a voltage sensing terminal, and the BATH port connected to the counter electrode as a current output terminal, simultaneously acquiring the electrophysiological signal of the target cell and the current signal corresponding to the concentration of the target biochemical biomarker. This application provides a powerful analytical tool for a deeper understanding of the electrochemical signal coupling mechanism of neurons.

An embodiment discloses a display device, comprising: a display panel including a plurality of pixels, each pixel having a light-emitting element and a driving element; a data driver configured to input a data voltage to the plurality of pixels; a power supply module configured to input a reset voltage to the anode electrode of the light-emitting element; a sensing module configured to sense a current flowing through the anode electrode of the light-emitting element; a timing controller configured to control the data driver, the power supply module, and the sensing module; and a control switch module configured to selectively connect a reset power line for inputting the reset voltage to the power supply module or the sensing module.

A battery module according to the present application includes: a cell stack constituted by a plurality of battery cells stacked in one direction; and a sensing module arranged at a front or rear of the cell stack for voltage sensing and electrical connection of the battery cells, wherein the sensing module includes: a main frame formed to cover the front or rear of the cell stack and having a plurality of lead extraction holes through which electrode leads of the battery cells can be extracted; a plurality of bus bars arranged on the main frame to be spaced apart from each other in one direction; and a printed circuit board of a rigid material attached to the main frame and having a plurality of sensing tips provided to be attachable to and detachable from the corresponding bus bars.

A battery module according to the present disclosure includes: a cell stack including a plurality of battery cells that are stacked in one direction; and a sensing module located on a front portion or a rear portion of the cell stack for voltage sensing and electrical connection of the plurality of battery cells, wherein the sensing module includes: a main frame formed to cover a front surface or a rear surface of the cell stack and including a plurality of lead holes through which electrode leads of the plurality of battery cells are drawn out; a plurality of bus bars located on the main frame to be spaced apart from one another in one direction; and a printed circuit board formed of a rigid material, including a plurality of sensing tips detachably provided on corresponding bus bars, and attached to the main frame.

This application relates to the field of power equipment condition monitoring technology, specifically to a distributed voltage sensing probe, system, and method for dry-type air-core reactors. The probe includes: an annular insulating shell adapted to surround the reactor coil; an induction plate disposed inside the annular insulating shell for coupling with the electric field on the surface of the coil to form a coupling capacitor; and a signal processing module disposed inside the annular insulating shell, which includes a precision voltage-dividing capacitor forming a capacitive voltage divider circuit with the coupling capacitor. The probe, through the capacitive voltage divider circuit, proportionally converts the high voltage of the coil into a low-voltage signal characterizing the voltage of the coil relative to ground or between coils. This ability to proportionally convert the high voltage of the coil into a low-voltage signal characterizing its voltage relative to ground or between coils provides a direct voltage monitoring means for early fault detection inside the reactor, and the probe's adaptability design conforms to the shape of the coil, ensuring the stability of the voltage sensing.

A voltage sensing device having micro electro mechanical systems (MEMS) element includes a MEMS sensing element, a transimpedance amplifying circuit, a differentiation circuit and a signal detection circuit. The MEMS sensing element is configured to sense an input voltage to generate a sensed current. The transimpedance amplifying circuit is connected to an output end of the MEMS sensing element. The transimpedance amplifying circuit is configured to receive the sensed current, convert the sensed current into an amplified voltage. The differentiation circuit is connected to the transimpedance amplifying circuit. The signal detection circuit is connected to an output end of the differentiation circuit. The signal detection circuit is configured to detect the differentiated signal, determine whether the differentiated signal exhibits a sudden voltage change and identifies a time point of the sudden voltage change.

This invention provides a power module testing system, belonging to the field of power module manufacturing technology. The system includes a test fixture, a contact detection device, a test structure, and a controller. The test fixture has placement positions for power modules, and each placement position has multiple double-contact conductive connectors, each including an independent current application terminal and a voltage sensing terminal. The contact detection device includes a first relay and a low-voltage power supply, with the low-voltage power supply electrically connected to all voltage sensing terminals via the first relay. The test structure is electrically connected to all voltage sensing terminals; the controller is electrically connected to each current application terminal via a second relay. This system can perform contact detection on the power module before testing begins, preventing the power module from being damaged by high voltage during high-voltage testing due to poor contact between the pins and the test fixture, thus protecting the power module.

A rebar tying tool may include a feed mechanism configured to feed a wire, a feed motor configured to operate the feed mechanism, a twisting mechanism configured to twist the wire, a twisting motor configured to operate the twisting mechanism, a voltage sensing device configured to detect a battery voltage, a wire type sensing device configured to detect a wire type, and a control device. The control device may be configured to prevent at least one of the feed motors and the twisting motor from being driven if a battery voltage value detected by the voltage sensing device is less than or equal to a voltage threshold.The control unit can be configured to change the voltage threshold according to the type of wire detected by the wire type detection device.

An asymmetric half-bridge flyback switching power supply, its control chip, and control method are provided. The asymmetric half-bridge flyback switching power supply includes a first power switch, a second power switch, a resonant capacitor, and a transformer. The control chip is configured to: generate an upper-side control signal for controlling the on / off state of the first power switch based on an output feedback signal characterizing the output voltage of the asymmetric half-bridge flyback switching power supply and a current sensing signal characterizing the current flowing through the primary inductance of the transformer; and generate a lower-side control signal for controlling the on / off state of the second power switch based on the output feedback signal and a voltage sensing signal characterizing the voltage across the auxiliary inductance of the transformer. When the first power switch is in the off state, the duration of discharge of the resonant capacitor through the second power switch to the primary inductance of the transformer is proportional to a voltage value that is the charging voltage of the primary inductance of the transformer when the first power switch is in the on state.

A Boost-type converter and a driving circuit for driving a high-side switching transistor thereof includes an input voltage sensing unit, an oscillator, a logic unit, and a high-side driving unit. The logic unit receives an input voltage detection signal, a clock signal and a pulse width modulated signal, and generates a control signal according to the input voltage detection signal, the clock signal and the pulse width modulated signal. The high-side driving unit generates a driving signal of a high-side switching transistor for driving the high side switching transistor according to the control signal. When the input voltage is greater than a predetermined voltage, the high-side driving unit controls the high-side switching transistor to be in a weak-conduction state or off state for a time period of an inductor current discharge phase.

This invention provides a power pliers with illumination for maintenance, relating to the field of power pliers technology. It includes a first handle and a second handle rotatably connected by a pivot. Both handles are made of transparent plastic. An L-shaped first chuck is fixed to the front end of the first handle, and an L-shaped second chuck is fixed to the front end of the second handle. A light, a power supply battery, and a voltage sensing control chip are installed on the end of the first handle facing away from the first chuck. A first illumination point facing forward is provided on the side of the first chuck facing away from the first handle, and a second illumination point facing downwards is provided at the end of the first chuck. This solution, by providing a forward-facing first illumination point and a downward-facing second illumination point on the first chuck, combined with a transparent plastic handle and a light-blocking coating, achieves directional lighting and glare-free visibility in confined spaces, solving the problem of traditional tools relying on external light sources and having limited working visibility, and improving the accuracy of precision wire alignment and plugging / unplugging operations.

The application provides a multilevel parallel-serial voltage sensing readout method and circuit for a 1TnR resistive memory array, which comprises the following steps: S1, at least two word line voltage coding combinations are applied to a selected 1TnR unit, each coding combination is used to dynamically configure n resistors in the 1TnR unit into different parallel-serial topologies, so as to generate corresponding readout voltages at an output node; S2, the readout voltages generated when different coding combinations are applied are differentially sampled and amplified by a differential sampling coupling voltage sensing amplifier, so as to obtain amplified decision voltages; and S3, according to the decision voltages corresponding to the multiple coding combinations, the resistance states of the n resistors in the 1TnR unit are mapped out. Therefore, the application overcomes the limitation that the existing VSA scheme is only applicable to 1T2R and cannot analyze more resistance states, can restore the multilevel resistance states of each resistive switching device, and thus greatly improves the effective storage capacity of the 1TnR array.

[PROBLEMS] The present invention relates to a gas sensor that can measure the concentration of hydrogen gas in a sample gas over a wide concentration range with high accuracy. [SOLUTION] A gas sensor 100 comprises a sensor element 101 and a control unit, wherein the sensor element 101 comprises: a base part 102 containing a first solid electrolyte 4 with proton conductivity and a second solid electrolyte 5, 6 with a lower resistance value for proton conductivity than the first solid electrolyte 4; a current-measuring pump cell 21 comprising an internal cavity measuring electrode 22 arranged on the second solid electrolyte 6 in an internal cavity 20;and a voltage sensing sensor cell 31, comprising: a reference electrode 32 arranged on the first solid electrolyte 4 in a reference gas chamber 30, and a sensing electrode 23 arranged adjacent to the reference electrode 32 over at least the first solid electrolyte 4, and a concentration calculation part of the control unit which calculates a hydrogen concentration in a sample gas based on an electromotive force V2 generated in the voltage sensing sensor cell 31; and / or calculates the hydrogen concentration in the sample gas based on a current Ip1 flowing through the current measuring pump cell 21.;

The utility model discloses a packaging structure of optical fiber voltage sensing head relates to optical fiber voltage sensing head technical field, including closed insulating shell, the lateral wall of closed insulating shell is equipped with the fiber hole, the through -hole no. One and the through -hole no. Two, BGO crystal, faraday collimation rotatory polarimeter and optical fiber, BGO crystal and faraday collimation rotatory polarimeter all are arranged in the closed insulating shell inner chamber and opposite adhesion, and one end of optical fiber is passed through the fiber hole and is connected with faraday collimation rotatory polarimeter one end, electrode assembly no. One and electrode assembly no. Two, one end of electrode assembly no. One and electrode assembly no. Two correspond to each other and press in the both sides of BGO crystal to fasten, and the other end of electrode assembly no. One and electrode assembly no. Two correspond to each other and pass through the through -hole no. One and the through -hole no. Two, intermediate filling layer, fills in the closed insulating shell inner chamber and fiber hole. The utility model can promote the long -term stability and signal transmission reliability of optical voltage sensor under high -voltage environment, ensure its sensing head under high -voltage, strong electromagnetic interference and the stable work under the harsh environment.

This invention provides an anti-pinch smart bed and anti-pinch system, relating to the field of smart bed technology. It includes: a lifting unit, a bed frame, and a first voltage sensing wire and a second voltage sensing wire that are not in contact with each other and alternately pass between the lifting unit and the bed frame. One end of each of the first and second voltage sensing wires is electrically connected to a control box, while the other ends are in an open-circuit state, recording a back reference current. The real-time back current is compared with the back reference current of the back drive motor at the current Hall effect position. If the comparison results are inconsistent, the leg drive motor and the back drive motor stop operating. The beneficial effects are that multiple anti-pinch sensing wires prevent the lifting unit from moving when a person or object is inserted into the anti-pinch sensing wire, thus stopping the lifting and lowering of the bed and preventing pinching injuries. It also achieves sensitive detection of current changes; once a deviation from the reference current is found, the motor operation is immediately stopped, effectively preventing pinching incidents and ensuring user safety.

A heat sensor circuit includes a sensing pixel, a reference pixel, a sensing unit, and a voltage generation unit. The sensing pixel and the reference pixel are coupled with a first input terminal of the sensing unit. The voltage generation unit includes switch circuits and a voltage divider circuit that is coupled with the switch circuits and coupled between first and second supply voltages. The switch circuits include a first switch circuit outputting a first voltage to the sensing pixel based on the first supply voltage, a second switch circuit outputting a second voltage to the reference pixel based on the first supply voltage, and a third switch circuit outputting a third voltage to a second input terminal of the sensing unit based on the first supply voltage. The sensing unit generates an output voltage based on the current difference between sensing pixel and reference pixel.

A system for powering an uninterruptible power supply (UPS) using an external battery cabinet is disclosed. The system may include an external battery cabinet configured to supply power to the UPS, wherein the external battery cabinet operates at a predetermined battery voltage. The system may include a boost pulse width modulator controller comprising two or more operating switches and a boost converter coupled to the boost pulse width modulator controller, wherein the boost converter is configured to increase the predetermined battery voltage. The system may include bypass circuitry to allow power to flow directly from the external battery cabinet to the UPS. The system may include voltage sensing circuitry configured to measure the voltages of the external battery cabinet and the UPS. The system may include a microcontroller configured to generate one or more boost signals or one or more bypass signals based on the voltages of the external battery cabinet and the UPS to activate one of the boost converters or the bypass circuitry.

The application relates to a power distribution network grounding fault detection device and method. The power distribution network grounding fault precise detection device is composed of an incoming line end signal acquisition device and an outgoing line end signal acquisition device which are respectively installed in an incoming line section and an outgoing line section of a measured area. The two sets of acquisition devices are respectively provided with a microprocessor module, a Beidou timing module, a three-phase current transformer, a signal conditioning module and an FPGA module. The output end of the three-phase current transformer is further connected with an electric quantity metering module. The metal shell of the transformer has a voltage sensing electrode function and can non-contact sense the voltage signal of a three-phase high-voltage cable. The microprocessor module relies on the Beidou timing to synchronously compare the current vector sum of the incoming line end and the outgoing line end, so as to judge whether the fault exists, and meanwhile, the precise positioning of the fault phase is completed according to the high-frequency component in the voltage signal. Compared with the prior art, the application has the advantages of realizing low-cost, high-precision double-criterion detection and the like.

This application discloses an intelligent monitoring system and method for a high-voltage ice-melting cabinet, belonging to the field of power equipment condition monitoring and intelligent sensor technology. The system includes the following steps: deploying a distributed intelligent sensor network with self-diagnostic functions inside the high-voltage ice-melting cabinet; the distributed intelligent sensor network includes temperature sensing nodes, current / voltage sensing nodes, and environmental sensing nodes; acquiring multi-source data within the cabinet based on a unified clock reference, and filtering out abnormal data according to the self-diagnostic results; during the ice-melting start-up phase, determining whether there is a concurrent risk of near-condensation and local overheating based on the filtered data; if a concurrent risk exists, locking the ice-melting start-up; otherwise, predicting hotspot trends based on the cabinet's thermal inertia model and dynamically adjusting the ramp rate constraint value of the ice-melting current. Through concurrent risk determination and dynamic ramp rate adjustment, both ice-melting safety and operational efficiency are ensured.