Wireless salinity sensing system based on evaporation-induced power generation battery

An evaporation-induced, salinity sensing technology, applied in the field of wireless salinity sensing system design, can solve the problems of low energy conversion efficiency, low output power, limitations, etc., and achieves low equipment requirements, simple preparation process, and structure. less restricted effect

Pending Publication Date: 2021-09-24
TIANJIN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, its output power is low, and the energy conversion efficiency is not high. At present, the output power of a single evaporation-driven battery is generally 10 -8 W to 10 -3 W, which is much lower than that obtained by traditional power supplies, so its application as a stand-alone power supply is limited to some extent

Method used

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  • Wireless salinity sensing system based on evaporation-induced power generation battery
  • Wireless salinity sensing system based on evaporation-induced power generation battery
  • Wireless salinity sensing system based on evaporation-induced power generation battery

Examples

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Effect test

Embodiment 1

[0032] Example 1 Experiment on the relationship between sensing voltage and salinity gradient, the specific process is as follows:

[0033] First configure the NaCl solution (0.5mol / L, 1mol / L, 2mol / L, 3mol / L) with the amount of gradient substance, fix the built power generation functional area in a 50mL conical triangular beaker with upper and lower mouths, and set the power generation function The silver wire at the dry end of the area is connected to the working electrode of the electrochemical workstation, and the silver wire at the wet end of the power generation functional area is connected to the reference electrode of the electrochemical workstation. Through the peristaltic pump, different concentrations of NaCl solutions are sequentially passed into the main system of evaporation-induced power generation constructed above, and the relationship between the voltage and the concentration of the influent NaCl solution is recorded by the electrochemical workstation (take the...

Embodiment 2

[0034] Embodiment 2 The specific operation process of the salinity sensing system is as follows:

[0035] First, connect the silver wire at the dry end of the power generation function area to the A0 port of Arduino, connect the silver wire at the wet end to the GND port of Arduino, and inject 0.5mol / L NaCl solution into a 50mL conical triangular beaker with upper and lower openings through a peristaltic pump , when the battery power production is stable, that is, when the voltage reaches 0.2634V, 1mol / L NaCl solution is introduced, and the salinity of the water in the system will be replaced after 120s, and the voltage will change (the corresponding voltage of 1mol / L NaCl solution is 0.2727V, The corresponding voltage of 2mol / L NaCl solution is 0.2951V), when the concentration of water in the system is 1-2mol / L, the LED light is on, when the concentration of water in the system is greater than 3mol / L, that is, when the voltage is 0.3296V, the buzzer will sound The device soun...

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Abstract

The invention constructs a wireless salinity sensing system based on an evaporation-induced power generation battery. According to the invention, an evaporation-induced power generation battery with stable performance is prepared by using a highly charged material and qualitative filter paper, meanwhile, the wireless salinity sensing system based on the evaporation-induced power generation battery is constructed by using the linear relation between the power generation voltage and the salinity of the evaporation-induced power generation battery for the first time, the Analog Read function of Arduino is used for the first time to read the generated change voltage, a salinity early warning program is written by utilizing Arduino, in the system, when the salinity exceeds 3 mol/L, a buzzer gives an alarm, and when the salinity is 1 to 2 mol/L, an LED lamp is turned on. The construction of the system widens the application field of the evaporation power generation battery, and provides a new development direction for the development of the evaporation power generation battery.

Description

technical field [0001] The invention relates to a design of a wireless salinity sensing system based on an evaporation-induced electricity production battery. Background technique [0002] Due to the increasingly serious energy problem. It is particularly urgent to explore the utilization of sustainable green energy, and evaporation-induced electricity generation battery is an emerging research direction in recent years. When water molecules pass through the narrow capillary channel formed by materials with charged surfaces, the capillary force and water evaporation Driven, the oppositely charged counterions in the electric double layer (EDL) in the capillary channel move together with the water molecules, resulting in a potential difference and a current flow. However, its output power is low, and the energy conversion efficiency is not high. At present, the output power of a single evaporation-driven battery is generally 10 -8 W to 10 -3 W, which is much lower than that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/403H01M6/04
CPCG01N27/403G01N27/30H01M6/04
Inventor 刘宪华李璟玉康宁
Owner TIANJIN UNIV
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