Abstract:
Apparatus are provided for infusion devices and related systems and operating methods. An exemplary system includes a motor, a sensing arrangement coupled to the motor to provide output indicative of a detected characteristic of the motor when the sensing arrangement is enabled, and a module coupled to the sensing arrangement to periodically enable the sensing arrangement while the motor is idle and detect potential unintended motion of the motor based on the output from the sensing arrangement while periodically enabling the sensing arrangement. In some embodiments, the motor includes a rotor configured such that its rotation provides translational displacement of a plunger in a fluid reservoir, and the sensing arrangement includes one or more sensors configured to provide output indicative of a detected magnetic field of the rotor magnet.
Abstract:
Apparatus are provided for infusion devices and related systems and operating methods. An exemplary system includes a motor, a sensing arrangement coupled to the motor to provide output indicative of a detected characteristic of the motor when the sensing arrangement is enabled, and a module coupled to the sensing arrangement to periodically enable the sensing arrangement while the motor is idle and detect potential unintended motion of the motor based on the output from the sensing arrangement while periodically enabling the sensing arrangement. In some embodiments, the motor includes a rotor configured such that its rotation provides translational displacement of a plunger in a fluid reservoir, and the sensing arrangement includes one or more sensors configured to provide output indicative of a detected magnetic field of the rotor magnet.
Abstract:
A control system for the working piston of a valveless metering pump for the precision delivery of fluids to a plurality of sequentially spaced output ports is adapted to control and alter the speed of rotation of the pump piston depending on predetermined angles of rotation of the piston as it cycles.
Abstract:
[Object] To provide a pump device capable of achieving a further reduction in power consumption. [Solving Means] A pump device (1) according to an embodiment of the present invention includes a drive motor (M), a first pump unit for evacuation (11) including a first pump chamber and a first piston (21v), and a second pump unit for pressurization (12) including a second pump chamber and a second piston (21c). The second piston (21c) has a phase advanced with a rotational phase difference (ϕ) of more than 0° and less than 80° with respect to the first piston (21v).
Abstract:
[과제]소비 전력의 더욱 저감을 실현할 수 있는 펌프 장치를 제공한다. [해결 수단]본 발명의 일 실시 형태에 따른 펌프 장치(1)는, 구동 모터(M)와, 제1 펌프실과 제1 피스톤(21v)을 갖는 진공 배기용의 제1 펌프부(11)와, 제2 펌프실과 제2 피스톤(21c)을 갖는 가압용의 제2 펌프부(12)를 구비한다. 제2 피스톤(21c)은, 제1 피스톤(21v)에 대해 0°초과 80° 미만의 회전 위상차(φ)를 가지고 진상(進相, phase advance)된다.
Abstract in simplified Chinese:本发明之课题在于提供能达到减低更多耗电量之帮浦设备。其解决手段为,本发明之一实施形态的帮浦设备1,其具备驱动马达M、具有第1帮浦室与第1活塞21v之真空排气用第1帮浦部11及具有第2帮浦室与第2活塞21c之加压用第2帮浦部12。第2活塞21c以0°以上未满80°之旋转相位差φ相位超前第1活塞21v。