HVAC components having improved efficiency are described. In one embodiment, excessive sleep current draw in a battery-powered device having a microcontroller is detected by measuring a voltage drop across a MOSFET device coupled in a forward-conducting orientation in series between the battery and the microcontroller, causing a transistor to conduct when the voltage drop exceeds a predetermined threshold to generate a first trigger signal, integrating the first trigger signal to generate a second trigger signal, and generating an interrupt to the microcontroller. In another embodiment, a battery-saving method of operating an HVAC component includes maintaining the HVAC device in the sleep mode, receiving a user input to wake the device, transmitting a data request and returning the HVAC component to the sleep mode, waking up the HVAC device to poll an adjacent network node storing a cached response, displaying the response, and returning the HVAC device to sleep.

Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system including a plurality of zones each including a DC power distribution line and a protective device. Each protective device structured to sense one or more electrical characteristics of a line and to controllably open a circuit including the line. At least one intelligent electronic device is structured to determine a line inductance based upon electrical characteristics sensed by one or more of the protective devices and to evaluate a location of the line fault based upon the determined line inductance.

Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system including a plurality of zones each including a DC power distribution line and a protective device. Each protective device structured to sense one or more electrical characteristics of a line and to controllably open a circuit including the line. At least one intelligent electronic device is structured to determine a line inductance based upon electrical characteristics sensed by one or more of the protective devices and to evaluate a location of the line fault based upon the determined line inductance.

A remotely controlled electronic general switch in DC power electrical supply system(s), ensuring switching and control of current and supply voltage, has an electronic module. The module has a controller or processor connected (i) to the switching and measurement circuit, the controller and measurement circuit optionally being linked bidirectionally, the controller being configured such that, when it receives a voltage and current measurement of the measurement circuit, it is respectively able to verify whether the input voltage lies in a predetermined interval and to instruct current interruption by the switching circuit for a certain duration, as a function of the measured current value, and (ii) to the communication interface, the communication interface connected to the communication bus and controller optionally being linked bidirectionally, such that the controller can be programmed remotely. An addressing bus, connected to the controller, enables selection, from several systems, a particular supply system linked to the general switch.

A remotely controlled electronic general switch in DC power electrical supply system(s), ensuring switching and control of current and supply voltage, has an electronic module. The module has a controller or processor connected (i) to the switching and measurement circuit, the controller and measurement circuit optionally being linked bidirectionally, the controller being configured such that, when it receives a voltage and current measurement of the measurement circuit, it is respectively able to verify whether the input voltage lies in a predetermined interval and to instruct current interruption by the switching circuit for a certain duration, as a function of the measured current value, and (ii) to the communication interface, the communication interface connected to the communication bus and controller optionally being linked bidirectionally, such that the controller can be programmed remotely. An addressing bus, connected to the controller, enables selection, from several systems, a particular supply system linked to the general switch.

An embodiment electronic circuit includes an electronic switch comprising a load path, a first protection circuit configured to generate a first protection signal based on a current-time-characteristic of a load current through the load path of the electronic switch, and a drive circuit configured to drive the electronic switch based on the first protection signal. The first protection circuit includes an analog-to-digital converter (ADC) configured to receive an ADC input signal representing the load current, to sample the ADC input signal once in each of a plurality of successive sampling periods, and to output an ADC output signal that includes a sequence of values such that each of the values represents a respective sample of the ADC input signal. The ADC is configured to pseudo-randomly select a sample time in each sampling period.

An embodiment electronic circuit includes an electronic switch comprising a load path, a first protection circuit configured to generate a first protection signal based on a current-time-characteristic of a load current through the load path of the electronic switch, and a drive circuit configured to drive the electronic switch based on the first protection signal. The first protection circuit includes an analog-to-digital converter (ADC) configured to receive an ADC input signal representing the load current, to sample the ADC input signal once in each of a plurality of successive sampling periods, and to output an ADC output signal that includes a sequence of values such that each of the values represents a respective sample of the ADC input signal. The ADC is configured to pseudo-randomly select a sample time in each sampling period.

Embodiments include a vehicle power distribution system comprising a vehicle battery having a nominal voltage; a plurality of electric loads, each load being associated with a rated voltage; and an integrated circuit coupled to the vehicle battery and comprising a plurality of solid-state circuitry blocks respectively coupled to the electric loads, each block including a circuit protection system and configured to supply the rated voltage associated with the electric load coupled to the block. Embodiments also includes a vehicle power distribution module comprising an integrated circuit configured to receive a first voltage from a vehicle battery and to supply respective rated voltages to a plurality of electric loads, the integrated circuit comprising a plurality of solid-state circuitry blocks, and each circuitry block including a circuit protection system and being coupled to a respective one of the electric loads.

Embodiments include a vehicle power distribution system comprising a vehicle battery having a nominal voltage; a plurality of electric loads, each load being associated with a rated voltage; and an integrated circuit coupled to the vehicle battery and comprising a plurality of solid-state circuitry blocks respectively coupled to the electric loads, each block including a circuit protection system and configured to supply the rated voltage associated with the electric load coupled to the block. Embodiments also includes a vehicle power distribution module comprising an integrated circuit configured to receive a first voltage from a vehicle battery and to supply respective rated voltages to a plurality of electric loads, the integrated circuit comprising a plurality of solid-state circuitry blocks, and each circuitry block including a circuit protection system and being coupled to a respective one of the electric loads.

Disclosed an electricity amount detection method and device, a terminal and a storage medium. The method includes that: Identity (ID) information of each function device called by an application is acquired according to ID information of the application; a power consumption parameter generated when each function device is called is correspondingly acquired according to the ID information of each function device called by the application; a power consumption parameter generated when the application is running is determined according to the power consumption parameter generated by each function device; and the power consumption parameter generated when the application is running is output as a power consumption index when the application is running.