摘要:
An apparatus and method for measuring energy cell impedance. Time sequences representing each of a repetitive signal, an orthogonal-phase-repetitive signal at the characterizing frequency, and at least one term of a power series polynomial are generated. One of a current or voltage corresponding to the repetitive signal is applied to an energy cell. Contemporaneously with the applying, measured values of a current or voltage are measured. A set of correlation values between the measured values and the generated time sequences are determined. The set of correlation values are transformed into a set of fitted coefficients of a repetitive signal component and an orthogonal-phase-repetitive signal component at a characterizing frequency. An impedance of the energy cell at the characterizing frequency is determined based on a ratio of the fitted coefficients for the orthogonal-phase-repetitive component to the repetitive signal component.
摘要:
A fastener with a head element that is coupled to a strip element is disclosed. The strip element is configured to fasten to the head element via an attachment structure of the head element. An identification device is molded into the fastener. The identification device has an identifier integrated circuit (IC) within an IC package and an antenna, having a portion internal to the IC package and a portion extending out of the IC package, coupled to the identifier IC.
摘要:
A fastener with a head element that is coupled to a strip element is disclosed. The strip element is configured to fasten to the head element via an attachment structure of the head element. An identification device is molded into the fastener. The identification device has an identifier integrated circuit (IC) within an IC package and an antenna, having a portion internal to the IC package and a portion extending out of the IC package, coupled to the identifier IC.
摘要:
An electronic device includes multiple functional logic modules (108-110) each having a corresponding settling time, a clock generator element (103), and multiple memory elements (104-107). The clock generator element (103) generates multiple clock signals (111-114) having clock periods of a common duration. Each clock signal has a first clock transition and a second clock transition during each clock period, and a latest second clock transition of the clock signals in a particular clock period precedes an earliest first clock transition in a subsequent clock period by the settling time. Each memory element is clocked by a respective one of the clock signals, and each memory element includes an input latch clocked on a first clock transition of the respective one of the clock signals, and an output latch clocked on a second clock transition of the respective one of the clock signals.
摘要:
A sealing device for sealing a container and for indicating unauthorized opening of a container is disclosed. The sealing device includes a sealing structure, having a top surface and a side wall surface, and an identification device embedded in the sealing structure, the identification device including an identifier integrated circuit (IC) within an IC package, and an antenna having a portion internal to the IC package and a portion external to the IC package that extends along a portion of the sealing structure that forms the side wall surface. In an embodiment, because the antenna portion external to the IC package extends along the side wall surface, if the side wall surface is broken or torn when the sealing device is removed, then the identification device will be disabled.
摘要:
One example discloses a voltage reference, including: a bandgap circuit core having a first intermediate bandgap voltage output, a second intermediate bandgap voltage output, and a bandgap voltage reference output; an amplifier having a first input, a second input, an input offset, an output, and an input_offset_trim; a trim controller; a switch matrix coupled between the bandgap circuit, the amplifier and the trim controller; wherein the switch matrix has a functional configuration and a calibration configuration; wherein in the functional configuration of the switch matrix, the first intermediate bandgap voltage output is coupled to the first input of the amplifier and the second intermediate bandgap voltage output is coupled to the second input of the amplifier; and wherein in response to the calibration configuration of the switch matrix, the trim controller is coupled to adjust the input offset of the amplifier using the input_offset_trim.
摘要:
Embodiments of a method for amplifier calibration and an amplifier system are described. In one embodiment, a method for amplifier calibration involves amplifying an input signal using a first amplifier connected between an input terminal and an output terminal to generate an output signal and digitally performing offset calibration on a second amplifier coupled in parallel with the first amplifier between the input terminal and the output terminal while amplifying the input signal using the first amplifier. Other embodiments are also described.
摘要:
One example discloses a tamper detection device, comprising: a detection circuit, configured to be powered by a near-field-communication (NFC) signal and store a status of a detection element; wherein the detection circuit is configured to set the status to undisturbed in response to an undisturbed state of the detection element; wherein the detection circuit is configured to set the status to disturbed in response to a disturbed state of the detection element; and wherein the detection circuit is configured to electrically report the detection element status in response to a wireless query signal.