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Weak current detection amplifier in plant body

A weak current and plant body technology, applied in the direction of amplifier combination, power amplifier, etc., can solve the problem of weak current without plants, and achieve the effect of reducing interference

Inactive Publication Date: 2017-04-26
山西师范大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no instrument for detecting weak currents in plants.

Method used

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  • Weak current detection amplifier in plant body
  • Weak current detection amplifier in plant body
  • Weak current detection amplifier in plant body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: In order to test the weak electric current signal that plants produce in vivo during photosynthesis, take the sunflower seedling of three weeks of indoor cultivation as material, use NI USB-6008 (12 bits, 10kS / s, 10kS / s, Multifunctional DAQ acquisition card) to acquire the amplified signal, and the electrode adopts a platinum metal electrode with a diameter of 0.5mm. The measured plant is irradiated with a blue LED lamp with a wavelength of 455 to 460nm as the light source. The measured optical density at the detected leaf is: 50umol / (m2.s); the negative electrode is inserted into the petiole of the seedling during detection, The positive electrode was inserted into the main vein of the leaf, and the distance between the two electrodes was 3cm. The seedlings were irradiated with 2S blue light in a dark place. The collected signals were as follows: Image 6 shown. It can be seen that when the leaves of the seedlings are irradiated with blue light, the plan...

Embodiment 2

[0043] Embodiment 2: In order to detect the influence of changing the plant's own electric field on its own weak current signal, a 9V DC voltage is used to stimulate the sunflower seedlings to change its own electric field, and the signal is collected to obtain the following: Figure 7 Shown signal; Acquisition card and electrode are identical with embodiment 1, and the negative pole of signal acquisition electrode is placed on seedling stem bottom, and positive pole is placed on seedling stem top, and the distance between two collection electrodes is 10cm; The positive pole of stimulation electrode is grounded, and the negative pole is to plant The top single lobe was subjected to contact voltage stimulation, and the distance between the two stimulating electrodes was 20cm. Depend on Figure 7 It can be seen that when a 9V DC voltage is applied to the aboveground part of the sunflower seedlings to induce changes in the electric field in the plants, a weak current signal with ...

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Abstract

The invention relates to a weak current detection amplifier in plant body, comprising a weak current voltage converting module, a filtering module and an amplifying module; the collected weak current signal is converted into a weak voltage signal through the weak current voltage converting module, and then transmits to the filtering module to filter; the processed weak voltage signal is transmitted to the amplifying module to amplify, thus the conversion amplification and regulation of the weak current signal in the plant body is realized. The plant weak current signal is converted and amplified with high precision, thus the disturbance of high frequency and power frequency is reduced; moreover, there is a signal zeroing system, and the system can compensate and zero the signal.

Description

technical field [0001] The invention relates to a current detection amplifier, in particular to a weak current detection amplifier in a plant. Background technique [0002] Due to the existence of the atmospheric electric field, the tip discharge phenomenon of plants is formed, and the photoelectric effect and the action of the atmospheric electric field in the process of plant photosynthesis will cause the plants to release electrons to their surrounding environment, and these electrons are absorbed by some neutral molecules in the air Finally, negative air ions (NAI) are formed, and the content of negative ions in the air is closely related to people's health. Due to the release of electrons by the plants, a weak electric current is generated in the grounded plants, and this phenomenon follows the growth and development of land plants throughout their lives. In addition, when charged objects including animals pass by plants, the electrostatic field of these objects will a...

Claims

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Application Information

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IPC IPC(8): H03F3/21H03F3/68
CPCH03F3/21H03F3/68
Inventor 杨利艳虞波
Owner 山西师范大学
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