CN101644251A - Detection device for control motor of peristaltic pump - Google Patents

Abstract

The invention provides a detection device for a peristaltic pump, which comprises a Hall element arranged on a circuit board fixed to a fixed shell of the peristaltic pump, and a magnet which is arranged on a rotating part of the peristaltic pump relative to a rotation axis of the peristaltic pump in an offset mode. The detection device avoids the detection failure caused by the presence of a foreign matter on the surface of a photoelectric switch when the photoelectric switch is adopted for the detection in the prior art, and can detect the working state of the peristaltic pump accurately inreal time and avoid influencing the safety of a patient caused by the fault of a motor or the peristaltic pump.

Description

The detection device of control motor of peristaltic pump

Technical field

The present invention relates to a kind of detection device that is used for Wriggling Pump Head, more specifically, relate to a kind of detection device that is used for the infusion pump Wriggling Pump Head.

Background technique

Present stage, infusion pump generally adopts stepper motor to drive Wriggling Pump Head extruding transfusion device as power source, to reach the purpose of carrying liquid.Thereby cause transfusion to cause the danger of patient safety aspect unusually for fear of motor or Wriggling Pump Head operational failure, usually, also have detection system, so that work detects to Wriggling Pump Head.When motor rotation, Wriggling Pump Head rotates thereupon, and detection system is judged whether fault of Wriggling Pump Head according to detected signal, and makes infusion pump stop transfusion by program control when detecting abnormal signal and send warning.

The design of existing detection system is a lot, and wherein commonplace is to use the operational situation that optoelectronic switch detects Wriggling Pump Head.But in some cases, because the consumption and the bad control of the uniformity of the lubricating grease in Wriggling Pump Head, lubricating grease in Wriggling Pump Head more for a long time, after the long-term running continuously of Wriggling Pump Head, lubricating grease is heated and melts and be easy to flow on the optoelectronic switch, and is set in the switch surface of optoelectronic switch, thereby causes the optoelectronic switch disabler, cause false alarm, and cause the infusion pump cisco unity malfunction.

Summary of the invention

Propose the present invention for addressing the above problem, and the purpose of this invention is to provide a kind of detection device that is used for Wriggling Pump Head, this detection device can overcome deficiency of the prior art.

The detection device that is used for Wriggling Pump Head according to the present invention comprises: Hall element, be arranged on the circuit board, and described circuit board is fixed in the stationary housing of described Wriggling Pump Head; And magnet, with respect to the biasing of the rotatingshaft of described Wriggling Pump Head be arranged on the rotating part of described Wriggling Pump Head.

Preferably, described magnet is arranged on the rotating block, and described rotating block is connected in the rotatingshaft of described Wriggling Pump Head.

Preferably, described rotating block at one end by bolt in described rotatingshaft, and the other end is provided with groove, described magnet is installed in the described groove.

Preferably, described detection device also comprises alarm element.

Preferably, described magnet is a magnet.

Detection device according to the present invention replaces conventional optoelectronic switch with Hall element, whether utilize the performance of Hall element in magnetic field to detect Wriggling Pump Head work exists unusually, because magnet surface exists the foreign matter of lubricating grease etc. can not cause changes of magnetic field, thereby the detection that has existed foreign matter to cause owing to the optoelectronic switch surface when having avoided the available technology adopting optoelectronic switch to detect is malfunctioning, and can detect accurately in real time the Wriggling Pump Head working state, avoid motor or Wriggling Pump Head fault that patient safety is impacted.

Description of drawings

By the detailed description below in conjunction with accompanying drawing, above-mentioned and others of the present invention, feature and other advantage will be understood better, in the accompanying drawing:

The schematically illustrated detection device that is used for the infusion pump Wriggling Pump Head according to the preferred embodiment of the invention of Fig. 1;

The rotating block of schematically illustrated this detection device of Fig. 2; And

The schematically illustrated Hall element that is installed on the circuit board of Fig. 3.

Embodiment

Below in conjunction with accompanying drawing, be that example describes the present invention with the detection device that is used for the infusion pump Wriggling Pump Head.Yet the present invention can be with a lot of multi-form enforcements, the embodiment that should not be understood that to only limit to here and presented.On the contrary, provide this embodiment, make that the disclosure is comprehensive and complete, and all sidedly scope of the present invention is conveyed to those skilled in the art.

The schematically illustrated detection device that is used for the infusion pump Wriggling Pump Head according to the preferred embodiment of the invention of Fig. 1.As shown in Figure 1,motor 1 rotates by the WrigglingPump Head 2 that belt transmission drives infusion pump, thereby makespump sheet 9 move left and right, with the transfusion of extruding transfusion device.What can see in Fig. 1 is, also has detection device, detects with the work to Wriggling Pump Head 2.Whenmotor 1 running, detection device is judged whether fault of WrigglingPump Head 2 ormotor 1 according to detected signal, and makes infusion pump stop to infuse and sending warning by program control when detect abnormal signal.

As shown in Figure 1, the detection device according to this embodiment comprisesHall element 7 and magnet 6.Preferably,Hall element 7 is arranged on (as shown in Figure 3) on thecircuit board 3, and thiscircuit board 3 is fixed on the stationary housing of WrigglingPump Head 2, is maintained fixed during rotating at Wriggling Pump Head 2.Magnet 6 is connected in therotatingshaft 5 of WrigglingPump Head 2 by rotatingblock 4, and with respect torotatingshaft 5 biasings,magnet 6 rotates along with the rotation of WrigglingPump Head 2.

Therotating block 4 of schematically illustrated this detection device of Fig. 2.In this embodiment, rotatingblock 4 at one end is fixed inrotatingshaft 5 bybolt 8, and the other end is provided withgroove 10, andmagnet 6 is installed in the groove 10.Preferably, in this embodiment,magnet 6 is a magnet.

Replacedly,magnet 6 also can be set directly on the rotating part of WrigglingPump Head 2.

The working principle of detection device is according to the present invention, and whenmotor 1 drove WrigglingPump Head 2 rotations, therotating block 4 that is connected withrotatingshaft 5 rotated thereupon, andHall element 7 is maintained fixed.Rotating block 4 whenever rotates a circle, and themagnet 6 that is installed on the rotatingblock 4 will be throughHall element 7 once.Like this, when rotatingblock 4process Hall elements 7, theinterior Hall element 7 of magnetic field range that is inmagnet 6 can be such as transmitting a high electricity frequency signal bycircuit board 3 to infusion pump control system (not shown), and behind rotatingblock 4process Hall elements 7,Hall element 7 can be such as hanging down electric signal frequently bycircuit board 3 to the transmission of infusion pump control system.Be in normal working following time at WrigglingPump Head 2, the infusion pump control system can receive clocklike electricity signal frequently by detection device.When unusual running appears in the Wriggling Pump Head under the Electric Machine Control, the infusion pump control system can receive different electricity signal frequently by detection device, thereby stop transfusion, and, the alarm element (not shown) that is preferably included in this detection device sends warning, to remind theoperator motor 1 or WrigglingPump Head 2 is detected and operation such as follow-up maintenance.

Detection device according to the present invention replaces conventional optoelectronic switch with Hall element, thereby the detection that has existed foreign matter to cause owing to the optoelectronic switch surface when having avoided the available technology adopting optoelectronic switch to detect is malfunctioning, and can detect accurately in real time the Wriggling Pump Head working state, avoid motor or Wriggling Pump Head fault that patient safety is impacted.

Though invention has been described in conjunction with being considered to practical exemplary embodiment at present, yet, those skilled in the art will appreciate that to the invention is not restricted to disclosed exemplary embodiment.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a detection device that is used for Wriggling Pump Head (2) is characterized in that, described detection device comprises:

Hall element (7) is arranged on the circuit board (3), and described circuit board (3) is fixed in the stationary housing of described Wriggling Pump Head (2); And

Magnet (6), with respect to the biasing of the rotatingshaft (5) of described Wriggling Pump Head (2) be arranged on the rotating part of described Wriggling Pump Head (2).

2. detection device according to claim 1 is characterized in that, described magnet (6) is arranged on the rotating block (4), and described rotating block (4) is connected in the rotatingshaft (5) of described Wriggling Pump Head (2).

3. detection device according to claim 2 is characterized in that, described rotating block (4) at one end is fixed in described rotatingshaft (5) by bolt (8), and the other end is provided with groove (10), and described magnet (6) is installed in the described groove (10).

4. detection device according to claim 1 is characterized in that, described magnet (6) directly is arranged on the described rotating part.

5. detection device according to claim 1 is characterized in that described detection device also comprises alarm element.

6. detection device according to claim 1 is characterized in that, described magnet (6) is a magnet.

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