Peristaltic pump, control device therefor, injection device and method of controlling a peristaltic pump

By employing pressure phase detection and predictive pressure control in the peristaltic pump, combined with a PID controller and speed adapter, the safety interval problem caused by pressure pulsation in the injection device is solved, achieving more efficient injection control and shorter injection time.

CN116803442BActive Publication Date: 2026-07-24ULRICH GMBH & CO KG
4 Cites 0 Cited by

Patent Information

Application Number
CN202310305899.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2022-03-25
Filing Date
2023-03-27
Publication Date
2026-07-24
Estimated Expiration
2043-03-27

AI Technical Summary

Technical Problem

Existing injection devices require a large safety interval when processing oscillating pressure curves to avoid unnecessary shutdowns caused by excessive pressure, which leads to prolonged injection processes and increased injection doses. Furthermore, existing control methods struggle to precisely control pressure pulsations, affecting injection efficiency.

Method used

A control device is employed to predictively control the speed and volumetric flow rate of a peristaltic pump, detect and predict pressure during pressure phases, limit the pressure in the pressure cycle to not exceed the limit, and optimize the operating parameters of the peristaltic pump to achieve higher volumetric flow rate and shorter injection time by combining a PID controller and a speed adapter.

Benefits of technology

The reduced safety interval improved injection efficiency, lowered the risk of damage to patients and devices, reduced production costs, and enabled higher volumetric flow rates and shorter injection durations.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention particularly relates to a control device (8) for a peristaltic pump (5) delivering a medium in a pulsating pressure cycle, the control device (8) controlling the speed of the peristaltic pump (5) in such a way as to not exceed the pressure limit (p) in the delivery line (9). Grenz Achieving maximum volumetric flow rate (Q) under these conditions max One task is to guide the actual pressure in the output line (9) as close as possible to the pressure limit (p). Grenz Or minimize the distance to it. To solve this problem, a method based at least on the pressure (p) in the output line (9) is proposed. ist To calculate the predicted pressure (p) for each pressure cycle (P) within the expected maximum pressure of the pressure cycle (P). futur And by using this predicted pressure, the maximum volumetric flow rate (Q) is limited. max This causes the pressure (p) in the output pipeline (9) to increase. ist ) does not exceed the pressure limit (p) in the pressure cycle (P) Grenz This invention also relates to related aspects.
Need to check novelty before this filing date? Find Prior Art