Abstract: A pacing signal processing method, a system and an electrocardiogram (ECG) monitor, the method includes collecting at a high sampling rate the original ECG signal from a surface, obtaining the parameter and position information of a pacing signal according to the sampling points, and displaying the pacing signal morphology and/or parameter information of the pacing signal.

Abstract: A power module for medium and high-voltage frequency converter and a frequency converter comprising same. The power module has a three-phase alternating current input and a single-phase alternating current output, and comprises a circuit board (100), a rectifying module (120), a capacitor bank (130), and an inverting module (140), wherein the rectifying module, the capacitor bank and the inverting module are all mounted on the circuit board. The power module has a compact structure and is convenient to cool.

Abstract: A pacing signal processing method, a system and an electrocardiogram (ECG) monitor, the method includes collecting at a high sampling rate the original ECG signal from a surface, obtaining the parameter and position information of a pacing signal according to the sampling points, and displaying the pacing signal morphology and/or parameter information of the pacing signal.

Abstract: Methods and devices for switching filters and medical apparatuses using the same are described. The method includes: detecting whether or not a frequency range of an input signal is changed from a first frequency range into a second frequency range; if changed, switching from a first filter to a second filter, and taking a sample value of the input signal at a current moment as an input value of the second filter at the current moment and sample values of the input signal at n moments before the current moment as input values of the second filter at the n moments, respectively, and taking output values of the first filter at m moments before the current moment as output values of the second filter at the m moments, to obtain an output value of the second filter at the current moment.

Abstract: A pacing signal processing method, a system and an electrocardiogram (ECG) monitor, the method includes collecting at a high sampling rate the original ECG signal from a surface, obtaining the parameter and position information of a pacing signal according to the sampling points, and displaying the pacing signal morphology and/or parameter information of the pacing signal.

Abstract: A method of producing PUD by a solvent free process includes drying polyol in vacuum; placing the dried polyol and DMBA in a reaction vessel to mix until a first mixture becomes transparent; adding diisocyanate which having functional group of isocyanate(—NCO) to the first mixture to react until —NCO terminated first prepolymer is formed; decreasing temperature of the —NCO terminated first prepolymer to 65° C.; adding a neutralizing agent to the —NCO terminated first prepolymer until —NCO terminated second prepolymer is formed; adding the remaining diisocyanate having isocyanate functional group to the —NCO terminated second prepolymer to form a second mixture; adding deionized water to the second mixture to form prepolymer dispersion; and adding chain extension agent to the prepolymer dispersion to rotate at a range of 200 to 2,000 rpm for chain extension for 1-3 hours until solid content 40.0 wt. % solvent free PUD is produced.

Abstract: A method of producing PUD by a solvent free process includes drying polyol in vacuum; placing the dried polyol and DMBA in a reaction vessel to mix until a first mixture becomes transparent; adding diisocyanate which having functional group of isocyanate (—NCO) to the first mixture to react until —NCO terminated first prepolymer is formed; decreasing temperature of the —NCO terminated first prepolymer to 65° C.; adding a neutralizing agent to the —NCO terminated first prepolymer until —NCO terminated second prepolymer is formed; adding the remaining diisocyanate having isocyanate functional group to the —NCO terminated second prepolymer to form a second mixture; adding deionized water to the second mixture to form prepolymer dispersion; and adding chain extension agent to the prepolymer dispersion to rotate at a range of 200 to 2,000 rpm for chain extension for 1-3 hours until solid content 40.0 wt. % solvent free PUD is produced.

Abstract: Mutation signal processing methods, devices and medical detecting apparatuses are described. The method includes detecting whether or not a mutation signal exists in an input signal; if the mutation signal exists in the input signal, processing the input signal by a filter to obtain an output signal, and updating a prestored difference value according to a difference value obtained by subtracting the output signal from the input signal; and if the mutation signal does not exist in the input signal, using a difference value obtained by subtracting the prestored difference value from the input signal as the output signal.

Abstract: This disclosure relates to baseline restoration methods and apparatuses and medical detecting equipment thereof. The baseline restoration method comprises: determining whether there is a high-amplitude baseline in an input signal by previous k output signals (Y1, . . . , Yk) of a filter, where k is a natural number and k?1; setting the previous m output signals (Y1, . . . , Ym) of the filter as Y? when there is a high-amplitude baseline in the input signal, where Y? is a desired output signal of the filter; and using a current input signal X0, the previous n input signals (X1, . . . , Xn), and the previous m output signals (Y1, . . . , Ym) of said filter to obtain a current output signal Y0 of said filter.

Abstract: This disclosure relates generally to medical devices, particularly to drawer-type paper tray structures for loading paper into electrocardiograph machines. A paper tray structure provided comprises a paper tray and a door component. The door component comprises a door located in front of the paper tray. The door component is connected to the paper tray movably and is configured to move repeatedly between a first position and a second position relative to the paper tray; the paper tray comprises a first restriction surface and a second restriction surface corresponding to the first and second positions respectively.

Abstract: This disclosure relates to baseline restoration methods and apparatuses and medical detecting equipment thereof. The baseline restoration method comprises: determining whether there is a high-amplitude baseline in an input signal by previous k output signals (Y1, . . . , Yk) of a filter, where k is a natural number and k?1; setting the previous m output signals (Y1, . . . , Ym) of the filter as Y? when there is a high-amplitude baseline in the input signal, where Y? is a desired output signal of the filter; and using a current input signal X0, the previous n input signals (X1, . . . , Xn), and the previous m output signals (Y1, . . . , Ym) of said filter to obtain a current output signal Y0 of said filter.

Abstract: Mutation signal processing methods, devices and medical detecting apparatuses are described. The method includes detecting whether or not a mutation signal exists in an input signal; if the mutation signal exists in the input signal, processing the input signal by a filter to obtain an output signal, and updating a prestored difference value according to a difference value obtained by subtracting the output signal from the input signal; and if the mutation signal does not exist in the input signal, using a difference value obtained by subtracting the prestored difference value from the input signal as the output signal.

Abstract: Methods and devices for switching filters and medical apparatuses using the same are described. The method includes: detecting whether or not a frequency range of an input signal is changed from a first frequency range into a second frequency range; if changed, switching from a first filter to a second filter, and taking a sample value of the input signal at a current moment as an input value of the second filter at the current moment and sample values of the input signal at n moments before the current moment as input values of the second filter at the n moments, respectively, and taking output values of the first filter at m moments before the current moment as output values of the second filter at the m moments, to obtain an output value of the second filter at the current moment.

Abstract: A power cabinet (100) for medium-high voltage inverters. The power cabinet (100) comprises a cabinet shell (110) and a support (120) for mounting power modules (210, 220, 230), wherein the support (120) comprises at least one pair of upright beams (121) and sliding rails (123) arranged on the paired upright beams (121), at least one column of space for accommodating the power modules (210, 220, 230) is formed by the at least one pair of upright beams (121), and the sliding rails (123) are used for supporting the power modules (210, 220, 230).

Abstract: This disclosure relates generally to medical devices, particularly to drawer-type paper tray structures for loading paper into electrocardiograph machines. A paper tray structure provided comprises a paper tray and a door component. The door component comprises a door located in front of the paper tray. The door component is connected to the paper tray movably and is configured to move repeatedly between a first position and a second position relative to the paper tray; the paper tray comprises a first restriction surface and a second restriction surface corresponding to the first and second positions respectively.

Abstract: A power module for medium and high-voltage frequency converter and a frequency converter comprising same. The power module has a three-phase alternating current input and a single-phase alternating current output, and comprises a circuit board (100), a rectifying module (120), a capacitor bank (130), and an inverting module (140), wherein the rectifying module, the capacitor bank and the inverting module are all mounted on the circuit board. The power module has a compact structure and is convenient to cool.