Abstract: A data access method, a switch and a storage medium, which relate to the technical field of switches. The method is applied to a switch. The switch includes a central processing unit, a baseboard management controller, a main controller and at least one device, wherein the central processing unit and the baseboard management controller are each connected to the main controller, and the main controller is connected to the at least one device. The method includes: receiving, by a main controller, an interface state corresponding to a target interface, and allowing, according to the interface state, a central processing unit or a baseboard management controller to access at least one device by the main controller.

Abstract: A switching system, method and apparatus of a clock circuit, and a non-transitory readable storage medium are provided. A clock switching component is configured to collect a first clock signal generated by the clock generating component. The controller determines, based on the first clock signal and a second clock signal generated by a reference clock, a frequency offset between the clock generating component and the reference clock, and sends, in response to the first clock signal and the frequency offset both satisfy set anomaly conditions, a switching signal to the clock switching component. The clock switching component controls the clock generating component to switch a current clock to a standby clock based on the switching signal. The controller identifies, based on the first clock signal and the frequency offset, an operating state of the current clock.

Abstract: A switching system, method and apparatus of a clock circuit, and a non-transitory readable storage medium are provided. A clock switching component is configured to collect a first clock signal generated by the clock generating component. The controller determines, based on the first clock signal and a second clock signal generated by a reference clock, a frequency offset between the clock generating component and the reference clock, and sends, in response to the first clock signal and the frequency offset both satisfy set anomaly conditions, a switching signal to the clock switching component. The clock switching component controls the clock generating component to switch a current clock to a standby clock based on the switching signal. The controller identifies, based on the first clock signal and the frequency offset, an operating state of the current clock.

Abstract: A data access method, a switch and a storage medium, which relate to the technical field of switches. The method is applied to a switch. The switch includes a central processing unit, a baseboard management controller, a main controller and at least one device, wherein the central processing unit and the baseboard management controller are each connected to the main controller, and the main controller is connected to the at least one device. The method includes: receiving, by a main controller, an interface state corresponding to a target interface, and allowing, according to the interface state, a central processing unit or a baseboard management controller to access at least one device by the main controller.

Abstract: A system and method for performing magnetic resonance imaging (MRI), magnetic resonance spectroscopy (MRS), or magnetic resonance spectroscopy imaging (MRSI) at multiple resonant frequencies using a coil system. The coil system includes at least one conductive loop and a capacitor forming a radiofrequency (RF) resonant antenna and a tuning-matching circuit electrically connected to the RF resonant antenna to operate at multiple resonant frequencies across a desired operational range. The coil system also includes two legs electrically connecting the tuning-matching circuit to the RF resonant antenna and having a length selected to generate at least two selected resonant frequencies with a selected frequency difference.

Abstract: A method for clearing a register, including: causing the PLD to set preset bits of a first register and a second register as an invalid state, detect whether a command is received from a MCU; when the command being received, parsing the command and determining whether a reading or writing event is triggered; when the reading event being triggered, setting the preset bit of the first register as a valid state, reading data of the preset bit of the first register, postponing clearing, by the PLD, the preset bit of the first register for a preset time; when the writing event being triggered, setting the preset bit of the second register as the valid state, writing, by the MCU, data into the preset bit of the second register, causing the PLD to acquire the data, postpone clearing the preset bit of the second register for a second preset time.

Abstract: A method for clearing a register, including: causing the PLD to set preset bits of a first register and a second register as an invalid state, detect whether a command is received from a MCU; when the command being received, parsing the command and determining whether a reading or writing event is triggered; when the reading event being triggered, setting the preset bit of the first register as a valid state, reading data of the preset bit of the first register, postponing clearing, by the PLD, the preset bit of the first register for a preset time; when the writing event being triggered, setting the preset bit of the second register as the valid state, writing, by the MCU, data into the preset bit of the second register, causing the PLD to acquire the data, postpone clearing the preset bit of the second register for a second preset time.

Abstract: A system and method for performing magnetic resonance imaging (MRI), magnetic resonance spectroscopy (MRS), or magnetic resonance spectroscopy imaging (MRS I) at multiple resonant frequencies using a coil system. The coil system includes at least one conductive loop and a capacitor forming a radiofrequency (RF) resonant antenna and a tuning-matching circuit electrically connected to the RF resonant antenna to operate at multiple resonant frequencies across a desired operational range. The coil system also includes two legs electrically connecting the tuning-matching circuit to the RF resonant antenna and having a length selected to generate at least two selected resonant frequencies with a selected frequency difference.

Abstract: A laser-based detection system that includes a laser device configured to emit a laser beam; a measuring chamber configured to receive in an internal cavity ambient air and the laser beam, wherein the measuring chamber is configured to bounce the laser beam inside the internal cavity multiple times; and a photosensor configured to receive an output laser beam from the measuring chamber.