Infusion control method with stepping motor and device thereof
A technology of a stepping motor and a control method, applied in the field of medical devices, can solve problems such as failure to achieve high-precision mode and poor mechanical characteristics of the motor, and achieve the effects of reducing vibration and noise and improving infusion accuracy
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Embodiment 1
[0035] as attached figure 1 As shown, the device includes an infusion rate conversion module. The user inputs the required infusion speed on the infusion pump, and the infusion speed conversion module converts the infusion speed into the target speed of the stepping motor. The conversion process is converted into the corresponding target speed according to the mechanical characteristics of the infusion pump, such as Infusion units such as infusion speed xx ml / h, xx g / h can be converted into the target speed y rpm of the stepper motor according to different infusion tube types and mechanical reduction ratios of infusion equipment. The infusion speed conversion module calculates the number of pulses per second required by the stepper motor driver IC when the stepper motor operates at the target speed according to the above target speed.
[0036] Acceleration and deceleration algorithm module, the acceleration and deceleration algorithm module is based on the mechanical characte...
Embodiment 2
[0113] as attached Figure 8 As shown, during the infusion of the infusion pump, when the motor is started for the first time, the stepper motor starts from speed 0. However, in the actual operation process, there are often situations in which manual intervention or other methods occur during the operation of the motor, and the stepping motor switches from a non-zero speed to a target speed.
[0114] Switching the stepping motor from the current speed to the target speed generally involves the starting frequency of the stepping motor. If different starting frequencies are selected, the vibration characteristics and noise characteristics of the stepping motor will also be different during the speed switching process, such as the stepping motor Switch from the current speed of 60rpm to the target speed of 600rpm, the starting frequency is value A, and the vibration characteristics and noise characteristics of the stepper motor are measured to be optimal, then switch from the cur...
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