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A constant temperature incubator with pid control

An incubator and constant temperature technology, applied in the field of constant temperature incubators, can solve problems such as the impact of hatching rate and the inability of fish eggs to hatch smoothly, and achieve the effect of great promotion prospects and social needs.

Active Publication Date: 2021-10-12
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the temperature of fish eggs fluctuates, which has a great impact on the hatching rate. Large fluctuations will cause a large number of fish eggs to fail to hatch smoothly, forming "white eggs"

Method used

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  • A constant temperature incubator with pid control
  • A constant temperature incubator with pid control
  • A constant temperature incubator with pid control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] When the aquarium heating rod stops working for a period of time, the temperature of the water body around the incubator and fish eggs will continue to drop. After the temperature measuring thermocouple B11 measures the temperature of the water body, it transmits the measured value to the temperature transmitter B8, and the temperature transmitter B8 converts the analog signal of the measured value into a standard electrical signal recognizable by the PID feedforward controller 9. The front end of the feedforward controller 9 is provided with a set value, and the difference between the set value and the measured value is called a deviation. According to the deviation, the PID feed-forward controller 9 gives a corresponding output value and transmits it to the current regulator 10 to change the input current intensity of the incubator, that is, to adjust the heat generation of multiple heating coils 2 to heat the incubator in advance.

[0029] The temperature measuring t...

Embodiment 2

[0032] When the aquarium heating rod starts working to heat the water body for a period of time, the temperature of the water body around the incubator and fish eggs will continue to rise. After the temperature measuring thermocouple B11 detects that the temperature of the water body rises, the PID feedforward controller 9 reduces the output current intensity of the current regulator 10 according to the set value, or even stops the input of the current, and cools down the incubator in advance. The temperature measuring thermocouple A4 measures the temperature of the incubator. According to the desired temperature, the PID feedback controller 7 adjusts the current intensity through the current regulator 10 to ensure that the temperature of the incubator remains constant.

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Abstract

The invention discloses a constant temperature incubator with PID control, comprising an incubator main body, the incubator main body includes a base for keeping the incubator stable and a columnar body arranged on the base for attaching fish eggs, the columnar body is hollow inside and has a top There is a top through hole for water filling and exhaust. The interior of the incubator body is fixed with a plurality of heating coils connected in series by coil wires for converting external electric energy into heat energy. The heating coils are controlled by feedforward The loop and the feedback control loop adjust the current intensity to change the heat generation. The invention can keep the fish eggs at a constant temperature and does not affect the hatching rate due to fluctuations in water body temperature. Therefore, it has great promotion prospects and social needs.

Description

technical field [0001] The invention relates to an aquarium hatching device, in particular to a constant temperature hatcher with PID control. Background technique [0002] Various ornamental fish are raised in aquaculture or home aquariums, some of which are viviparous, but the vast majority are oviparous. Some oviparous fish such as Yanyu and Discus reproduce by laying eggs and fertilizing in vitro. The female adheres her eggs to smooth cylinders or leaves of water plants, while the males follow and ejaculate on the eggs to fertilize them. Then the fish eggs will hatch naturally under the conditions of sufficient supply and suitable temperature. In other words, one of the keys to affect hatching is whether the oxygen content in the water body is sufficient, and the other is whether the temperature is appropriate. [0003] In the current mainstream incubators, only smooth columns are provided for fish eggs to attach to, and some aquariums use sand heads to increase oxyge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/17G05D23/30
CPCA01K61/17G05D23/30Y02A40/81
Inventor 张红升曹丽琴
Owner YANSHAN UNIV