输入功率控制装置

The input power controller for controlling the electric power the power supply feeds to driven device includes driver, voltage detector, current detector, multiplier and power controller. The voltage detector measures the output voltage of the power supply, the current detector measures the current the driver feeds to the driven device, and the multiplier multiplies the voltage signal and the voltage signal to obtain the electric power fed to the driven device. In case of too high input power, the power controller outputs one regulating signal to the driver to lower the driving current to the driven device until the input power is equal to the rated value.

Multi-charging current control circuit and method thereof

The invention discloses a multi-charge current control circuit which comprises a voltage reference unit, a current limiting unit, a current detector and a current control unit, wherein, the voltage reference unit can provide a plurality of reference voltages; the current limiting unit is based on a charge mode signal and chooses a corresponding reference voltage from the reference voltages so as to output a control signal according to the corresponding reference voltage; the current detector detects a first charging current and a second charging current and the current control unit controls the first charging current and the second charging current based on the control signal, wherein, the current detector feeds back the detected first charging current and the second charging current to the current control unit so that the current control unit can adjust the first charging current or the second charging current so as to maintain the sum of the first charging current and the second charging ...

Non-contact switch and control method thereof

The invention discloses a non-contact switch and a control method thereof. The non-contact switch is coupled to an input signal. The non-contact switch comprises a magnetic control trigger mechanism, a magnetic control sensor, a controller and a mode switching module; the magnetic control trigger mechanism can generate a corresponding magnetic signal according to the trigger of a user; the magnetic control sensor is used for sensing the magnetic signal and generating a corresponding trigger control signal based on the magnetic signal; the controller generates a corresponding switching signal according to the trigger control signal; and the mode switching module processes the input signal into a corresponding output signal according to the switching signal.

Polymorphic conformal perihepatic packing air bag for rapid hemostasis of liver trauma

The invention discloses a polymorphic conformal perihepatic packing air sac for rapid hemostasis of liver trauma, and belongs to the technical field of medical instruments, the polymorphic conformal perihepatic packing air sac comprises an air sac, an inflation catheter and an abdominal cavity drainage catheter, the air sac is communicated with the inflation catheter, the abdominal cavity drainage catheter and the inflation catheter are bound together through a bunching sleeve, and the air sac is communicated with the inflation catheter. The air bag comprises a crescent-shaped air bag, an oblate air bag and a sheet-shaped air bag. Compared with a traditional gauze filling hemostasis method, the operation is simpler, the subdiaphragm gap and the subhepatic gap are filled with the air bag under the laparotomy condition, the shape follow-up design enables the air bag to be better attached to the surface of the liver bleeding part, continuous and controllable pressure can be provided for the ...

Pulse width regulating method and device independent from voltage

In the pulse with regulating method, one voltage linearity related current source is first used to charge a capacitor and the voltage across the capacitor is coupled to voltage linearity related fundamental frequency reference comparator. When the output voltage of the capacitor reaches the reference voltage, the comparator output signal to make the capacitor charge to output one series of fundamental frequency sawtooth waves, and in different power supply the generated sawtooth waves has the same period. The fundamental frequency sawtooth waves are then transmitted to the speed controlling comparator to regulate the output pulse width in the pulse width regulating mode and to control the rotation speed of the motor.

Shark chondroitin sulfate high-calcium tablet and preparation method thereof

The invention relates to the field of health food, in particular to shark chondroitin sulfate high-calcium tablets and a preparation method thereof, and the shark chondroitin sulfate high-calcium tablets are prepared from the following raw materials: shark chondroitin sulfate, collagen, calcium carbonate, calcium acetate, vitamin D, herba epimedii and liquorice. The binder is a 3-5 wt% povidone solution prepared by dissolving povidone K30 in absolute ethyl alcohol. The shark chondroitin sulfate high-calcium tablet has the beneficial effects that in the shark chondroitin sulfate high-calcium tablet, all the raw materials are organically combined, so that the shark chondroitin sulfate high-calcium tablet not only has the effects of increasing bone mineral density and preventing osteoporosis, but also has the effect of repairing articular cartilage. Furthermore, the raw materials used in the invention are many and complex, and the stability of the preparation is low, so that the stability ...

Multi-charging current control circuit and method thereof

The invention discloses a multi-charge current control circuit which comprises a voltage reference unit, a current limiting unit, a current detector and a current control unit, wherein, the voltage reference unit can provide a plurality of reference voltages; the current limiting unit is based on a charge mode signal and chooses a corresponding reference voltage from the reference voltages so as to output a control signal according to the corresponding reference voltage; the current detector detects a first charging current and a second charging current and the current control unit controls the first charging current and the second charging current based on the control signal, wherein, the current detector feeds back the detected first charging current and the second charging current to the current control unit so that the current control unit can adjust the first charging current or the second charging current so as to maintain the sum of the first charging current and the second charging ...

Pulse width regulating method and device independent from voltage

Drive method of brushless D.C. motor and its driving circuit

The present invention relates to a driving method of brushless A.C. motor and its driving circuit. Its interval energy-forbidden driving method is characterized by that the magnet pole distribution of the motor rotor is sensed and the driving control signal is produced. and when the rotor is reached to the critical zone before or after the critical position, the driving control signal is in energy-forbidding indication state to make motor stator do not produce magnetic field in said interval and make rotor rotate according to its original inertia, and when the rotor is positioned out of the critical zone, the driving control signal is in general driving state to make motor stator produce magnetic field according to preset mode to make motor accelerate rotation. Its driving circuit consists of comparator, pulse-width modulation circuit and logic operator which are connected together.

Drive method of brushless D.C. motor and its driving circuit

Prompting method and prompting system for interface operation of surgical robot

The invention discloses a prompting method and system for interface operation of a surgical robot, and belongs to the field of surgical robots. Comprising the steps of obtaining first interface information of a contact interface, judging whether interface change occurs or not according to the first interface information and received operation, and if the interface change occurs, executing prompt of interface operation; wherein the prompt of the interface operation comprises the following steps: performing feature extraction on first interface information to obtain interface features; retrieving in a database based on the interface feature dimension, and acquiring historical image information similar to the contact interface and retrieved according to the selected interface feature dimension; based on the historical image information, feedback information of a follow-up interface during different operation parameter intervals is obtained; and based on the received actual operation parameters ...