25results about "Automatic balancing arrangements" patented technology

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.

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.

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.

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.

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.

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.

An apparatus for diagnosing a battery according to one aspect of the present disclosure may include a measuring unit configured to measure a voltage value of the battery at each predetermined cycle during a battery charging process; and a processor configured to calculate a resistance value of the battery based on the measured voltage value of the battery, determine a resistance change pattern by comparing the calculated plurality of resistance values with a preset criterion profile, and determine the state of the battery based on the determined resistance change pattern.

A sensing electronic device includes a substrate, and a reference voltage control unit. The sensing array is arranged on the substrate, and includes a first sensing electrode and a second sensing electrode. The reference voltage control unit is electrically connected to the sensing array. In an operation period, the reference voltage control unit has a first voltage, the first sensing electrode has a second voltage, and the second sensing electrode has a third voltage, wherein a difference between the first voltage and the second voltage is different from a difference between the first voltage and the third voltage.

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.

Methods and apparatuses with battery short circuit detection are provided. A short circuit detecting method includes determining measurement data by measuring a battery for a target timespan including a battery charging timespan or a battery discharging timespan, determining estimation data of the battery for the target timespan using a battery model that simulates the battery to determine the estimation data, determining a resistance error parameter of the battery based on the measurement data and the estimation data, and determining that a battery short circuit condition is satisfied based on a result of comparing the resistance error parameter and a short circuit threshold value.

The present invention relates to a measurement system 10 for measuring an energy cell 20, preferably a battery cell, in particular a single cell without added electrolyte, whereby said measurement system 10 comprises an AC voltage bridge or an auto-balancing bridge 11 and is configured to measure the capacitance C and / or the ohmic resistance R of the energy cell 20 by means of high-frequency measurements. Furthermore, the present invention relates to a corresponding method.

The invention discloses an impedance measurement device and method based on weak signal processing. The impedance measurement device comprises an impedance measurement bridge and a weak signal detection module. The impedance measurement bridge comprises an excitation source module, a range resistance module and a balance adjustment module; the weak signal detection module comprises a vector ratio acquisition unit, a multi-stage signal amplification unit, a clock synchronization unit and a plurality of analog-to-digital conversion units; the vector ratio acquisition unit is used for acquiring first analog voltage signals of to-be-measured impedances of different phases and second analog voltage signals of the range resistance module; the clock synchronization unit outputs a plurality of synchronous clock signals at equal intervals to the plurality of analog-to-digital conversion units; the plurality of analog-to-digital conversion units convert an analog voltage signal into a plurality of digital signals based on a plurality of equally spaced synchronous clock signals and output the digital signals. In the embodiment of the invention, signal extraction of the balanced bridge and noise suppression of multi-stage amplification are combined, and fidelity detection of weak voltage signals in strong noise is realized.

The invention discloses an impedance measurement device and method. The impedance measurement device comprises a signal source module, a range resistance module, an unbalance detection module and a measurement module, the signal source module comprises a first signal generation unit, a second signal generation unit, a first clock synchronization unit, a plurality of first digital-to-analog conversion units, a plurality of second digital-to-analog conversion units, a first signal output unit and a second signal output unit; the first clock synchronization unit is used for respectively outputting a plurality of synchronous clock signals at equal intervals; the plurality of first digital-to-analog conversion units are used for converting the digital signal output by the first signal generation unit into a plurality of first analog signals based on a synchronous clock signal; the first signal output unit is used for synthesizing the plurality of first analog signals into a first signal source; the measurement module is used for detecting voltage signals of the impedance and range resistance module to be measured, two paths of synchronous and consistent signal sources are generated through the signal source module with the first clock synchronization unit, and the excitation precision of the balanced bridge is improved.

A safety valve, a well system and a method is disclosed. The safety valve, in one aspect, includes a tubular housing, a How 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 another 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.

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.

The invention discloses an impedance measurement device and method based on weak current measurement. The impedance measurement device based on weak current measurement comprises an automatic balance bridge, a current measurement module and a voltage measurement module. The voltage measurement module is used for measuring the impedance to be measured and a voltage signal of the range resistance module; the current measurement module comprises a measurement input cable, a current amplification unit and a potential synchronization unit; the measurement input cable comprises an outer shielding layer, an inner shielding layer and a central signal line which are coaxially arranged; the outer shielding layer is grounded; the central signal line is used for detecting unbalanced current between the to-be-detected impedance and the range resistance module and inputting the unbalanced current into the current amplification unit; the potential synchronization unit comprises a shielding layer driving structure and a compensation structure; the shielding layer driving structure is used for outputting a driving signal to drive potential synchronization of the inner shielding layer and the central signal line; the compensation structure compensates the phase and amplitude of the driving signal, and the problems that weak signals of a traditional automatic balance bridge are difficult to extract and transmission is prone to distortion are solved.

To provide a circuit device etc. capable of improving voltage measurement accuracy. [Solution] A circuit device 100 includes a voltage divider circuit 110 that divides a voltage to be measured VIN and outputs the divided voltage to a voltage-divider node NDIV, a comparison circuit 160 that compares a voltage VDIV at the voltage-divider node NDIV with a reference voltage VREF, and a control circuit 150. The voltage-divider circuit 110 includes a first resistor RA1 through an n-th resistor RAn that are connected in series between the voltage-to-be-measured node NVIN and the voltage-divider node NDIV, and a first transistor TA1 through an n-th transistor TAn, with the i-th transistor TAi connected in parallel to the i-th resistor RAi. The control circuit 150 sets the j-th transistor TAj to one of on or off and the first transistor TA1 through the j-1st transistor TAj-1 to the other of on or off, and determines whether the j-th transistor TAj is on or off based on the comparison result of the comparison circuit 160, thereby outputting measurement data SAR[7:0].