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Multi-channel micro-injection pump

A micro-injection pump, multi-channel technology, applied in the direction of pressure infusion, comprehensive factory control, introduction of equipment into the body, etc., can solve the problem of low precision, achieve the effect of improving injection precision and realizing intelligent precision injection

Inactive Publication Date: 2015-05-20
掌蕴东
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of micro-injection pumps at home and abroad today is that the accuracy is not high, and generally only achieve single-channel uniform injection

Method used

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Experimental program
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Effect test

Embodiment Construction

[0016] A multi-channel micro-injection pump consists of a computer software control module, a main control chip module, a stepping motor drive module, a stepping motor and a sensor module connected in sequence, wherein the other end of the sensor module is connected to the main control chip module.

[0017] Among them, the main control chip module adopts the way that ARM and FPGA are connected to each other, and ARM is also connected with keyboard input module, liquid crystal display module, RS232 interface conversion module, sound alarm module, power supply and crystal oscillator module in sequence; FPGA is connected with pressure sensor, Motor drives and rotary encoders. The rotary encoder adopts the E6A2 system encoder, which is composed of the main code disc, phase disc, optical system and photoelectric converter connected in sequence. The THB7128 driver chip used in the stepper motor driver module is a dual full-bridge OSFET driver with a maximum current value of 3.3A...

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Abstract

The invention relates to the field of modern electronics, in particular to a multi-channel micro-injection pump. The multi-channel micro-injection pump is composed of a computer software control module, a main control chip module, a stepping motor driving module, a stepping motor and a sensor module in a sequence connection mode. The other end of the sensor module is connected with the main control chip module. The multi-channel micro-injection pump has an even deceleration and acceleration injection function, multiple injection pumps can be controlled to work in a linkage mode, and a good man-machine conversion interface and a good data processing function of a computer are used for achieving automatic control. A combination of ARM+FPGA is adopted for hardware, the advantages of an excellent logic time sequence function and good parallel processing performance of an FPGA are brought into full play, high subdivision of stepping motor drivers improves injection precision, multiple sensors are used for detecting the injection state, and intelligent precise injection and protection of an injector are successfully achieved.

Description

technical field [0001] The invention relates to the field of modern electronics, in particular to a multi-channel micro injection pump. Background technique [0002] Micro-injection pump is a long-term micro-injection instrument often used in clinical medicine and life science research. This instrument is mainly used in arteriovenous infusion, blood transfusion and precision chemical experiments. The main problem of today's micro-injection pumps at home and abroad is that the precision is not high, and generally only realize single-channel uniform injection. In some occasions, such as food detection chromatographic analysis, it is often required to inject reagents at a uniform speed. Therefore, it is very necessary to design uniform acceleration or uniform deceleration injection pumps, and to control multiple injection pumps in linkage to realize human-machine dialogue data processing. Contents of the invention [0003] The present invention aims to propose a mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/142G05B19/418
CPCA61M5/142A61M2005/14208G01N2035/0434G05B19/418
Inventor 掌蕴东
Owner 掌蕴东
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