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Method for improving detection near-space precision

A near-space and high-precision technology, which is applied in subcutaneous injection devices, optical device exploration, etc., can solve the problems of high cost and low detection accuracy, and achieve the effects of solving detection error problems, flexible control, and reducing product costs

Active Publication Date: 2013-03-06
BEIJING AEONMED
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  • Description
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Problems solved by technology

For this scheme of the potentiometer, the detection accuracy is high, but the cost is relatively high
But for the photoelectric switch, the detection accuracy is not high for the traditional method

Method used

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  • Method for improving detection near-space precision
  • Method for improving detection near-space precision
  • Method for improving detection near-space precision

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0018] figure 1 is a structural diagram of the near-air detection system according to the present invention.

[0019] Such as figure 1 As shown, the near-air detection system is composed of an injection injection mechanism 6 , a detection mechanism 2 , a support structure 3 and a driving mechanism 4 . The photoelectric switch 2a of the detection mechanism 2 is fixed on the injection mechanism mounting plate 1b with screws, and the light blocking sheet 2b is installed on the injection mechanism moving block 5b. During the injection process, the moving block 5 moves along the injection direction, and the light blocking sheet 2b also moves forward. When the injection...

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Abstract

The invention provides a method for improving detection near-space precision. The method comprises the following steps: under a calibration mode, recording a first calibration propelling quantity NE1when a light blocking sheet on a moving component of an injector blocks a photoelectric switch on an injection pump, and recording an empty propelling quantity NE2 when a piston of the injector movesto the end; calculating a calibration relative quantity difference delta NE between the first calibration propelling quantity NE1 and a near-space relative quantity NE0 according to the preset near-space relative quantity NE0 of the injector, the first calibration propelling quantity NE1 and the empty propelling quantity NE2; and under a normal injection mode, recording a first propelling quantityE1 when the light blocking sheet blocks the photoelectric switch, using the difference of a real-time second propelling quantity E2 recorded when the piston of the injector moves and the first propelling quantity E1 as a working relative quantity difference E3 to be compared with the calibration relative quantity difference delta NE, and judging that the injector is propelled to a near-space state when the working relative quantity difference E3 is greater than the calibration relative quantity difference delta NE.

Description

technical field [0001] The invention relates to a detection system, and more particularly, to a method for improving the accuracy of near-space detection. Background technique [0002] At present, the performance of syringe pumps for medical devices has a near-air alarm function. The commonly used near-empty detection mechanism mainly uses the potentiometer to sample the voltage value in real time and the switching value of the photoelectric switch to judge whether it is near-empty. For this solution of the potentiometer, the detection accuracy is high, but the cost is relatively high. But for the photoelectric switch, the detection accuracy is not high for the traditional method. Wherein, near-empty refers to a state in which the liquid in the syringe is nearly empty during a normal injection process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for improving the accuracy of near-space detection, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/10A61M5/00
Inventor 傅军
Owner BEIJING AEONMED
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