5results about How to "Reduce hardware size" patented technology

This invention discloses a gas-liquid detection device, method, and system based on the near-field load characteristics of an ultrasonic transducer, belonging to the field of underwater state monitoring and ultrasonic sensing technology. The device includes: an ultrasonic transducer that emits ultrasonic vibrations and receives near-field electroacoustic response signals; an excitation circuit that applies a pulse excitation signal to the ultrasonic transducer; an acquisition circuit that acquires near-field free oscillation signals at both ends of the ultrasonic transducer within a preset time window after the excitation ends; and a signal processing module that extracts time-domain feature parameters from the acquired near-field free oscillation signals, compares the extracted feature parameters with a preset threshold, and outputs a state indicator indicating whether the ultrasonic transducer is currently in a gaseous or liquid medium. The time-domain feature parameters are used to characterize the amplitude or attenuation characteristics of the near-field free oscillation signal. This invention requires only a single ultrasonic transducer, eliminating the need for a reflective surface or dual transducers, and has advantages such as simple structure, strong anti-interference capability, fast response speed, low power consumption, and high detection accuracy.

The application relates to the technical field of electric vehicle charging adaptation, and discloses a charging process method for saving a DC contactor of a Europe-to-China adapter, which is applied to the adapter; the method comprises the following steps: starting China standard communication after detecting a Europe standard charging pile starting signal; sending a preset required voltage parameter to maintain communication when the Europe standard enters a pre-charging stage; continuously issuing a CRO00 message to lock the vehicle contactor state before receiving a China standard vehicle BROAA message; updating the Europe standard pre-charging requirement after obtaining a real battery voltage parameter; after determining that the Europe standard charging pile output voltage reaches the real parameter and enters an energy output stage, switching to issue a CROAA message to trigger the China standard vehicle to close the contactor to charge, and meanwhile, the adapter sends the current battery voltage of the China standard vehicle to the Europe standard charging pile to make the Europe standard pile adjust and output according to the current battery voltage of the China standard vehicle, so that the whole charging process is completely established. The application delays the closing time of the vehicle contactor by intercepting and reconstructing the communication time sequence, avoids insulation detection conflicts, saves the built-in DC contactor in the adapter in the physical aspect, and reduces the hardware cost and system heat generation.

This invention discloses a single-camera optical image separation imaging system based on optical features, comprising an incident light module, a beam splitting module, a reflection adjustment module, and an imaging module. The incident light module, consisting of a front-facing image system and a collimating lens group, collimates the light beam before it is incident on the beam splitting module. The beam splitting module separates the beam into four independent beams. A reflection adjustment module, located between the beam splitting module and the imaging module, adjusts the four beams into separate off-axis beams and reflects them to a broadband achromatic lens group. Finally, these beams are simultaneously imaged onto four different quadrants of the image sensor. The advantages are that the broadband achromatic lens group achieves near-diffraction-limited imaging performance, and the symmetrical structure design with the collimating lens group ensures uniform light intensity distribution across the entire field of view. While reducing cost and size, it is compatible with image separation imaging requirements based on multi-dimensional optical features such as wavelength, polarization state, and focal plane.

The application discloses a spectrum reconstruction method, a chip, an equipment and a medium of a multi-light-source spectrometer, relates to the technical field of spectrum reconstruction, and comprises the following steps: a spectrometer module modulates at least one level in a multi-level Mach-Zehnder interferometer based on a control signal, so that the spectrometer module has a specific spectral response function in a current modulation state, and modulates an input light source signal; a disturbed light signal with corresponding disturbance is irradiated to a to-be-measured object; a photodetector detects reflected light signals generated after the disturbed light signal irradiates the to-be-measured object; a transmission response matrix of the spectrometer module is acquired, and a detection signal vector output by the photodetector is acquired; and the detection signal vector and the transmission response matrix are used to reconstruct an absorption spectrum of the to-be-measured object. The application has the advantages that the accuracy and the dynamic range of spectrum reconstruction can be improved.

The invention discloses a rail vehicle battery failure activation method and system based on dynamic minimum impedance, and the method comprises the steps: building a topological structure of an SI-MISO converter synchronously activated by a plurality of batteries, and controlling the SI-MISO converter through a cooperative control strategy based on TDM and phase interleaving; the minimum impedance frequency of the battery is detected through an online broadband impedance detection method, and a failure battery is diagnosed; and in an activation time window corresponding to the target battery to be activated, the SI-MISO converter is switched to a Buck mode, an activation time-varying duty ratio instruction is generated according to the minimum impedance frequency, zero static error tracking of the resonant frequency is realized by using the PR controller, and unity power factor activation current is injected to activate the failed battery. According to the invention, the problems of low detection efficiency and high hardware cost in the operation and maintenance of the existing railway vehicle battery and the problems of poor activation efficiency, poor effect and high safety risk in the traditional activation method are solved.