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Portable multi-channel electrochemical detection system

A detection system and multi-channel technology, applied in the field of portable multi-channel electrochemical detection systems, can solve problems such as large volume, achieve the effect of reducing volume, simple and convenient operation, and meeting the needs of multiple detection

Pending Publication Date: 2019-04-19
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, these electrochemical detection and analysis instruments only use single-channel or dual-channel detection, and are limited by buttons and LCD screens, so the volume is still too large

Method used

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  • Portable multi-channel electrochemical detection system
  • Portable multi-channel electrochemical detection system
  • Portable multi-channel electrochemical detection system

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Embodiment Construction

[0018] An embodiment of the present invention provides a portable multi-channel electrochemical detection system, which specifically performs eight-channel electrochemical detection. The details will be described below.

[0019] see figure 1 , The portable multi-channel electrochemical detection system includes: USB power supply module 101, system power supply module 102, STM32 microcontroller 103, on-chip DAC module 104, on-chip ADC module 105, current acquisition module 106, voltage excitation module 107, multi-channel Electrode interface 108, SD card storage module 109, Bluetooth transmission module 110, smart phone 111.

[0020] The USB power supply module 101 is externally connected to an external USB power supply and internally connected to the system power supply module 102 to supply power for the system power supply module 102; in this embodiment, the system power supply module 102 includes ±5V modules, +3.3V modules, and +1.5V modules.

[0021] The multi-channel ele...

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Abstract

The invention discloses a portable multi-channel electrochemical detection system including a USB power supply module, a system power module, a STM32 microcontroller, an in-chip DAC module, a currentcollecting module, a voltage exciting module, a multi-channel electrode interface, an SD card storage circuit, a Bluetooth transmission module and a smart phone. The smart phone is in communicationalconnection with the STM 32 microcontroller through the Bluetooth transmission module. Through the Bluetooth transmission module, the smart phone can control the system and receives data for displaying, so that system operation becomes simpler and more convenient. At the same time, since man-machine interaction of the system is not conducted through keys and liquid crystal display modules, the sizeis reduced. Besides, since the system adopts multi-channel detection, multi-element detection requirement of more scenes can be met.

Description

technical field [0001] The invention relates to the field of electrochemical sensing and detection, in particular to a portable multi-channel electrochemical detection system. Background technique [0002] With the continuous improvement and development of electrochemical theory, electrochemical detection technology has been widely used in food, environment, medical and other fields. A typical electrochemical reaction is carried out in a three-electrode system (working electrode, reference electrode, counter electrode, immersed in an electrolyte solution). The electrochemical detection method requires a constant excitation voltage to be applied to the electrode / electrolyte solution. Substances undergo redox reactions under electrochemical catalysis conditions, resulting in charge transfer, thereby generating an electric current. Since the current generated by the redox reaction is proportional to the concentration of the target, the concentration of the target can be detect...

Claims

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Application Information

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IPC IPC(8): G01N27/26G01N27/48
CPCG01N27/26G01N27/48
Inventor 易长青黄文政张明
Owner SUN YAT SEN UNIV
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