7 results about "Input capture" patented technology

The application discloses a nursing education traceable, interpretable and verifiable large model intelligent teaching assistant system and method, which comprises an input capture and semantic analysis module, a multi-source knowledge retrieval and versioned traceability module, an executable reference and piece-by-piece binding module, a causal evidence graph and structured explanation generation module, an evidence consistency and counterfactual stability verification module, and a replayable decoding and evidence storage module; the input analysis module generates a standardized problem template and risk level information; the knowledge retrieval and traceability module outputs a candidate evidence set with source segment fingerprints; the information binding module binds answer units and evidence fingerprints to generate reference mapping; the causal evidence graph module constructs a structured explanation graph; the multi-dimensional verification module performs logical consistency and counterfactual stability tests and outputs verification results; and the decoding and evidence storage module stores replayable decoding information. The application realizes answer segment level traceability, structured machine verifiable explanation and deterministic result replay through the construction of a modular system.

The application provides a wheel speed sensor jitter suppression method, system and device, and belongs to the technical field of sensor control. The wheel speed sensor jitter suppression method comprises the following steps: a hardware input capture module of a microcontroller is used to configure a double-edge trigger mode, to capture the rising edge and falling edge of a wheel speed square wave signal in real time and trigger a capture interrupt; in a service subprogram of the capture interrupt, the time stamp of each rising edge and falling edge is recorded, and the high level duration and low level duration in a single pulse period are calculated accordingly; according to the high level duration and the low level duration, the actual duty cycle of the current pulse period is calculated, the actual duty cycle is compared with a preset nominal duty cycle tolerance range, and a duty cycle verification result is generated.

This invention belongs to the field of sensors and discloses a hardware-coordinated wake-up signal detection method, apparatus, device, and medium. It is applied to a sensor system including a main control chip and an IO-Link chip. The method includes: associating a DMA channel with capture events of input capture channels; when a capture event occurs, recording the level state of the communication pin of the IO-Link chip controlled by the main control chip through the DMA channel; calculating the pulse width of the signal on the receiving pin of the IO-Link chip and the time difference between the first edge of the wake-up pin and the signal edge on the receiving pin of the IO-Link chip based on the time information recorded by each input capture channel; combining this with the level state of the communication pin of the IO-Link chip controlled by the main control chip to determine whether the first edge of the wake-up pin corresponds to a real wake-up signal; if so, performing a wake-up operation. This improves the accuracy of identifying the real wake-up signal of the IO-Link chip.

The present disclosure provides a fluorescence intensity signal acquisition method, a fluorescence temperature measuring instrument and a storage medium; wherein the method triggers ADC conversion and input capture with excitation signal jump as a unified time reference, and automatically transfers the conversion results to the memory by the direct memory access controller when the data is ready each time, which can not only ensure that the sampling window is strictly aligned with the fluorescence decay period, but also release the CPU, the sampling accuracy is no longer limited by the response delay of the CPU, and the silent acquisition of the fluorescence intensity signal can be realized without the participation of the CPU.

The utility model discloses a zero -crossing point comparison circuit for frequency measurement relates to frequency measurement technical field, and this circuit includes: for the differential homophase amplification circuit of amplitude amplification processing to the sampling signal after voltage division, for comparing the sampling signal with reference signal after amplitude amplification processing to the comparison circuit of high low level logic signal output based on the comparison result, for the voltage follower circuit of high low level logic signal transmission to the analog -to -digital conversion chip. The zero -crossing point comparison circuit provided by the utility model has completed the most critical analog signal processing and zero -crossing detection work, and the singlechip only needs to configure an external interrupt or input capture channel, records time when detecting the edge jump every time, and the software only needs to calculate the time difference between two zero -crossings in succession and obtains frequency by reciprocal, thereby greatly simplifying the software design.

The application relates to a relay driving circuit control method and a relay control circuit. The method comprises the following steps: when a relay switching instruction is received, input capture function of a timer is configured and enabled to capture zero-crossing time of a waveform detected by a zero-crossing detection circuit; an input capture interrupt of a controller is triggered according to the waveform, and current time of the timer is recorded in an input capture interrupt service program of the controller to obtain execution time of the input capture interrupt service program; in the input capture interrupt service program of the controller, a single-period PWM signal is generated according to the zero-crossing time, the execution time, a relay response duration and a half period of alternating current; after the single-period PWM signal completes level switching and before the period ends, a controller output pin function is changed from PWM output to GPIO output to output a fixed level corresponding to the switching level. The application can ensure that the relay operates when the alternating current is zero voltage, thereby improving the reliability of the circuit.

This application provides a debugging device and method for audio-visual equipment, including: a debugging adapter connected in series in an HDMI link between the device under test (DUT) and a display terminal, comprising a connector and a controller; a first preset pin of the connector, which interfaces with the DUT, is electrically connected to a high-impedance input capture pin of the controller via a first branch, and to a UART transmit pin of the controller via a second branch; the controller is used to distinguish signals on the first preset pin into a first type of signal and a second type of signal based on the pulse width of the first preset pin; and a debugging host, electrically connected to the controller, is used to receive the operating log data of the DUT when the controller identifies it as a first type of signal, and to debug the DUT when the controller identifies it as a second type of signal. By employing bidirectional monitoring and time-sharing scheduling, debugging and repair of audio-visual equipment can be achieved without disassembling the device.