69results about "Automatic balancing arrangements" patented technology

In one embodiment, a method includes accessing a first series of first magnetic values that represents a first magnetic recording that includes a first set of first magnetic measurements. Each of the first magnetic values represents one of the first magnetic measurements. The method includes accessing a second series of second magnetic values that represents a second magnetic recording that includes a second set of second magnetic measurements. Each of the second magnetic values represents one of the second magnetic measurements. The method includes approximately aligning the first and second series with each other; calculating a difference between the first and second series as aligned with each other; and determining a similarity between the first and second series based on the difference.

Vehicle electrical system (VES) with an insulation monitor (IM), two supply potentials (V+, V-) and a ground potential (PE), wherein the supply potentials (V+, V-) are DC voltage potentials and wherein a filter capacitor (C1', C2') is connected between each of the two supply potentials (V+, V-) and the ground potential (PE), wherein the insulation monitor (IM) is connected to the ground potential (PE) and the supply potentials (V+, V-) and is equipped with an evaluation device (A) which is configured to output an error signal (S) when the actual voltage change rate of at least one voltage between the supply potentials on the one hand and the ground potential is greater than a predetermined maximum voltage change rate, wherein the evaluation device (A) is configured to output an error signal when the actual voltage change rate of a first voltage between a first of the supply potentials (V+) and the ground potential (PE) is substantially the inverse of the actual voltage change rate of a second voltage between a second of the supply potentials (V-) and the ground potential (PE).

A safety valve, a well system and a method is disclosed. The safety valve, in one aspect, includes a tubular housing, a flow tube positioned within the tubular housing, a valve closure mechanism positioned within the tubular housing, the flow tube configured to move between a closed position and an open position and thereby move the valve closure mechanism between a closed state and an open state, an electromagnet coupled to one of the tubular housing or the flow tube, and one or more permanent magnets coupled to an other of the flow tube or the tubular housing. The safety valve according to this one aspect, may further include an electrical sensor coupled to the electromagnet, the electrical sensor configured to sense for a change in an electrical parameter associated with the electromagnet to determine a health of the safety valve.

A circuit device and an electronic apparatus. The circuit device includes: a voltage division circuit that divides a voltage to be measured and outputs the divided voltage to a voltage division node; a comparison circuit that compares the voltage of the voltage division node with a reference voltage; and a control circuit. The voltage division circuit includes first to n-th resistors provided in series between a voltage node to be measured and a voltage division node, and first to n-th transistors in which an i-th transistor and an i-th resistor are connected in parallel. The control circuit sets the j-th transistor to one of ON and OFF, sets the first to (j-1)-th transistors to the other of ON and OFF, and outputs measurement data by determining the ON or OFF of the j-th transistor on the basis of the comparison result of the comparison circuit.

In an example, a device includes a controller and a direct current (DC)-to-DC converter coupled to the controller and configured to provide a load current to a load. The device also includes a low-dropout (LDO) regulator coupled to the DC-to-DC converter. The controller includes digital logic, and the digital logic is configured to determine the load current. The digital logic is configured to turn on the LDO regulator if the load current is above a predetermined threshold. The digital logic is also configured to turn off the LDO regulator if the load current is below the predetermined threshold.

The present application provides a photovoltaic array test method and system, the method being applied to a photovoltaic array test system. The photovoltaic array test method comprises: obtaining the quantity of photovoltaic branches connected in a photovoltaic array; determining a reference electrical parameter according to the quantity of the photovoltaic branches and electrical parameters of the photovoltaic branches; if the photovoltaic array is electrically connected to the photovoltaic array test system, monitoring a test electrical parameter of the photovoltaic array; and determining a test result of the photovoltaic array according to the test electrical parameter and the reference electrical parameter.

An example apparatus, computer-implemented method, and computer program product for determining a variable resistance of a conductive portion of a resistance-based sensing device are provided. An example apparatus includes a resistance-based sensing device having a conductive portion configured to indicate a physical characteristic of an environment based on a variable resistance of the conductive portion. The apparatus further includes a controller electrically coupled to the resistance-based sensing device, having a process and a storage device storing instructions that are operable, when executed by the processor, to cause the processor to transmit stored energy from an energy storage device to the conductive portion of the resistance-based sensing device, determine a time interval associated with a voltage drop in the energy storage device, and determine the variable resistance of the conductive portion of the resistance-based sensing device based at least in part on the time interval.

A device can include analog circuits formed with a substrate, including a comparator, analog switches, and a balance current circuit. A sensor current and balance current can be applied at an input of the comparator. The sensor current, balance current or both can be modulated with a switch control signal. Digital circuits can include switch control logic that generates the switch control signal in response to an output of the comparator and a modulation clock signal. Digital signal processing circuits can generate a multi-bit digital value from a bit stream output by the comparator circuit. The multi-bit digital value can be an analog-to-digital conversion of the sensor current. Corresponding methods and systems are also disclosed.

The invention discloses a measurement system and equipment, and relates to the technical field of automatic balance bridge impedance measurement, and the measurement system comprises a signal collection module, a data processing module, a signal generation module and a main control module. The data processing module is connected with the signal acquisition module; the signal generation module is connected with the data processing module, and the data processing module is also used for controlling the signal generation module to generate a source signal and outputting the source signal to the tested equipment, so that the tested equipment can output a current signal and a voltage signal; the main control module is connected with the data processing module through the communication isolation module, and the main control module is used for receiving the impedance value output by the data processing module through the communication isolation module; the communication isolation module is used for physically isolating the main control module from the data processing module and allowing the high-frequency signal to be transmitted between the main control module and the data processing module, and the communication isolation module is arranged, so that physical isolation of the main control module and the data processing module is realized, noise is reduced, and the anti-interference capability is enhanced.

The method can include receiving a baseline signal curve, operating a thermal reactor, measuring a signal, optionally determining a state (e.g., state of health) of the thermal reactor, and controlling the thermal reactor based on the signal. The method can include receiving (e.g., determining, measuring, etc.) a resistance-temperature and / or resistance-time curve; operating a thermal reactor comprising resistively heating a porous catalytic element; measuring an electrical signal (e.g., resistance, current, voltage, etc.) of the thermal reactor; optionally inferring a temperature of the thermal reactor based on the electrical signal and the resistance-temperature; and controlling the thermal reactor based on the electrical signal. The system can include one or more of a reaction module (e.g., an electrical coupler or electrode and catalytic element, etc.), inlet and outlet valves, power source, electrical feedthroughs (e.g., leads, supports, etc.), sensors, and computing system (e.g. controller).

Electrical circuit (10, 40) comprising: a DC power supply (12); an electrical load (14); and an insulation fault detection device (15, 41), arranged in parallel with the load (14), comprising: a voltage divider; a diode bridge (23); and a comparator (34) comparing a voltage at the output of the diode bridge and a setpoint voltage (Vcons). Figure 1

A battery parameter estimating apparatus according to an embodiment of the present disclosure includes an impedance measuring unit configured to output a plurality of AC currents to a battery and measure a plurality of impedance values for the battery to correspond to the plurality of AC currents; and a control unit configured to generate a first profile by fitting the plurality of impedance values, correct the plurality of impedance values based on the first profile, determine a plurality of criterion values based on the plurality of impedance correction values, generate a second profile by fitting the determined plurality of criterion values, compare the plurality of impedance correction values with the second profile, and determine whether or not to set a battery parameter according to the comparison result.

A circuit device includes a voltage divider circuit that divides and outputs a measurement target voltage to a voltage division node, a comparison circuit that compares a voltage of the voltage division node with a reference voltage, and a control circuit. The voltage divider circuit includes a first resistor to an n-th resistor provided in series between a measurement target voltage node and the voltage division node, and a first transistor to an n-th transistor with an i-th transistor coupled in parallel to an i-th resistor. The control circuit outputs measurement data by setting a j-th transistor to one of on and off, setting the first transistor to the (j−1)-th transistor to the other of on and off, and determining the j-th transistor is on or off based on a comparison result of the comparison circuit.

Method for reducing noise in a vehicle traction circuit power supply system, and associated vehicle traction circuit power supply system. The invention relates to a method and a power supply system for a vehicle traction circuit, the traction circuit comprising a traction motor (4) and a main inverter (18) adapted to deliver an alternating voltage to supply the traction motor (4), the power supply system (2) comprising a self-contained electrical power source (6) providing a first direct current electrical voltage (V1), connected to a voltage boost converter (8) adapted to deliver a second direct current electrical voltage (V2) to the main inverter.The system includes a control block (24) configured to determine a value for the second DC electrical voltage based on a vehicle operating parameter, either vehicle speed (Vveh) or electrical power (Pcons) consumed or delivered by said traction motor, and to control said voltage boost converter (8) to deliver the determined second DC electrical voltage (V2). Figure 1 for abbreviations.

A voltage calibration circuit arranged in a chip and comprising a voltage monitor circuit, a calibration circuit and a storage circuit is provided. The voltage monitor circuit is coupled to at least one power management unit of the chip and configured to: calculate a voltage-code graph based on a received reference voltage and a received divided voltage; and output at least one output code based on the voltage-code graph and at least one output voltage received from the power management unit(s). The calibration circuit is coupled to the voltage monitor circuit and the power management unit(s), and configured to receive the output code(s) and adjust an output level of the power management unit(s) based on the output code(s) and a target code. The storage circuit is coupled to the calibration circuit, and configured to store the voltage-code graph and the output level of the power management unit(s).

A pre-driving stage drives one or more Field Effect Transistors in a power stage driving a load. A method for measuring current flowing in the Field Effect Transistors includes: measuring drain to source voltages of the one or more Field Effect Transistor; and measuring an operating temperature of the one or more Field Effect Transistor. The current flowing in the Field Effect Transistors is measured by: calculating the respective on drain to source resistance at the operating temperature as a function of the measured operating temperature and obtaining the current value as a ratio of the respective measured drain to source voltage over the calculated drain to source resistance at the operating temperature.

A system for generating and measuring electrical signals is disclosed. The system includes a digital-to-analog converter module configured to generate one or more analog signals based on a control signal and one or more channels. Each channel includes an output terminal configured to be electrically connected to an electrical device and a buffer circuit. The buffer circuit is configured to receive one of the one or more analog signals and provide a voltage at the output terminal based on a voltage of the received analog signal. The buffer circuit is further configured to be electrically connected to a current source and to allow a current to flow between the current source and the output terminal. The system further includes a voltage measurement system and a current measurement system. The voltage measurement system is configured to measure, for each channel, a voltage indicative of a voltage at the output terminal of the channel. The current measurement system is configured to measure, for each channel, a current flowing through the output terminal of the channel. A method for generating and measuring electrical signals is also disclosed.

A voltage regulator feedback circuit includes a first comparator, a second comparator and a logic circuit. The first comparator is configured to generate an overshoot signal based on a comparison of a voltage regulation target signal to a feedback voltage signal. The second comparator is configured to generate a forward current signal based on a comparison of the current sense amplifier voltage to a reference voltage. The logic circuit is configured to generate a breaking signal based on the overshoot signal and the forward current signal. A gate signal of a transistor connected between a second end of the inductor and a reference ground is generated based at least in part on the breaking signal and is configured to cause the transistor to open based at least in part on the breaking signal having a true value.

The invention relates to a device and a method for evaluating signals from one or more Wheatstone bridges. Here, the requirements of ISO 26262 are taken into account by mixing a test signal with the measurement signal before amplification and before analog-digital conversion. After amplification and analog-digital conversion, the measurement signal is again unmixed from the test signal. If the test signal does not correspond to the expected value, the amplifier and / or the analog-digital converter is faulty. The process has the advantage that it can be used during regular operation without being disturbed.

A capacitive position sensor includes a capacitance bridge and a balanced bridge circuit. The capacitance bridge includes at least one first electrode, and at least two second electrodes. The balanced bridge circuit separately adjusts excitation of the at least two second electrodes to balance a signal at the at least one first electrode toward a desired target value, wherein a level of the excitation is used as input to calculate a position of the at least one first electrode relative to the at least two second electrodes.

A voltage detection device includes a voltage divider circuit, a comparator circuit and a switch control circuit. The voltage divider circuit operates in a first mode based on a switching signal and divides a power voltage to generate an input voltage. The comparator circuit compares the input voltage with a set of reference voltages to generate a detection signal. The switch control circuit selectively adjusts a switching signal according to the detection signal after a predetermined period has elapsed from power-on of the power voltage so as to control the voltage divider circuit to switch from operating in the first mode to operating in a second mode. The first mode corresponds to a first target level of the power voltage, the second mode corresponds to a second target level of the power voltage, and the first target level is higher than the second target level.

A monitoring signal generation circuit of a SPS and method thereof is disclosed. The SPS provides an output current. The monitoring signal generation circuit provides a current monitoring signal related to the output current. The monitoring signal generation circuit includes a simulation current circuit and a control circuit. The simulation current circuit receives a reference voltage and provides a simulation current signal or the reference voltage as the current monitoring signal. The control circuit is coupled to the simulation current circuit and configured to receive the reference signal, the current monitoring signal and an indication signal. During a period when the indication signal indicates that power switches of the SPS are turned off, the control circuit controls the simulation current generation circuit to provide the simulation current signal or the reference voltage as the current monitoring signal according to the current monitoring signal and the reference voltage.

An LCR meter that uses a high-speed balancing method and can balance voltage measurement with only one unit. The LCR meter uses time-separated measurements of the device under test (DUT) and other parasitic component impedances (including leakage impedance) to speed up the balancing. The LCR meter is used to speed up balancing, separation of the measurement time of the device under test (DUT), and other parasitic impedances including leakage impedance. The leakage impedance and other parasitic impedances of the fixture and the LCR meter are measured during open / short calibration and stored in memory. The DUT is measured during measurement using known parasitic impedances. This makes it possible to calculate the balance condition with only one measurement of voltage.

A circuit arrangement for operating a resistive sensor element is described. According to an example implementation, the circuit arrangement includes a first supply terminal and a second supply terminal, between which is applied a supply voltage during operation, and a sensor circuit having at least one resistive sensor element. The sensor circuit has a first circuit node and a second circuit node for applying a sensor voltage, wherein the first circuit node is connected to the first supply terminal. The circuit arrangement further includes a sensor supply circuit, which is configured to electrically couple, during a measurement time interval, a charged capacitor to the second circuit node in such a way that the sensor voltage between the first circuit node and the second circuit node is greater than the supply voltage.

In one embodiment, a method includes, by an electronic device, accessing a first series of first magnetic values that represents a first magnetic recording that comprises a first set of first magnetic measurements that are each represented by one of the first magnetic values. The method includes, by the electronic device, accessing a second series of second magnetic values that represents a second magnetic recording that comprises a second set of second magnetic measurements that are each represented by one of the second magnetic values. The method includes, by the electronic device, approximately aligning the first and second series with each other; calculating a difference between the first and second series as aligned with each other; determining a similarity between the first and second series based on the difference; and performing navigation or localization based on the determined similarity.

Provided is a method for detecting a neutral relay, belonging to the field of inverters. The method for detecting the neutral relay includes: applying a voltage disturbance to the bus neutral point when other neutral relays except a target neutral relay among the at least one series-connected neutral relay are closed; acquiring potential change information of the bus neutral point relative to the grid neutral point within a period during which the voltage disturbance is applied; and determining a sticking state of the target neutral relay based on the potential change information and a target threshold.

The invention relates to a method and a protective device for line protection. In the method for line protection, a choke device (7, 8, 27-30) for reactive power compensation is provided on an electrical line (2, L1, L2, L3), and a resonant current (ICT) is measured on the line side of the choke device (7, 8, 27-30) after opening a circuit breaker (5) by means of a first measuring device (9, 24-26), characterized in that a voltage is measured after opening the circuit breaker (5) by means of a second measuring device (10, 31-33), and a current (ISH) in the choke device is calculated from the measured voltage by means of an evaluation device, and the calculated current (ISH) is subtracted from the measured resonant current (ICT) by means of the evaluation device to obtain a corrected current (ICB).

In one embodiment, a method includes accessing a first series of first magnetic values that represents a first magnetic recording that includes a first set of first magnetic measurements. Each of the first magnetic values represents one of the first magnetic measurements. The method includes accessing a second series of second magnetic values that represents a second magnetic recording that includes a second set of second magnetic measurements. Each of the second magnetic values represents one of the second magnetic measurements. The method includes approximately aligning the first and second series with each other; calculating a difference between the first and second series as aligned with each other; and determining a similarity between the first and second series based on the difference.