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Method and device for automatically measuring temperature field in non-contact biological fermentation process

A bio-fermentation and automatic measurement technology, applied in measuring devices, radiation pyrometry, optical radiation measurement, etc., can solve the problems of inability to accurately grasp the temperature change of the fermentation tank and the measurement of the temperature field of the fermentation tank, so as to improve the accuracy Effect

Inactive Publication Date: 2020-01-14
TIANJIN UNIV OF SCI & TECH +1
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Problems solved by technology

The disadvantage of this measurement method is obvious. For the entire fermenter, only local fixed-point temperature measurement can be carried out, and the temperature change of each point in the fermenter cannot be accurately grasped, let alone the measurement of the entire temperature field in the fermenter.

Method used

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  • Method and device for automatically measuring temperature field in non-contact biological fermentation process
  • Method and device for automatically measuring temperature field in non-contact biological fermentation process
  • Method and device for automatically measuring temperature field in non-contact biological fermentation process

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Embodiment Construction

[0017] This embodiment implements the process according to the spirit of the present invention, see image 3 , first calculate and select the parameters of the infrared camera, depth camera, lens and CCD; calculate the pixel requirements of the CCD, according to the formula (1):

[0018]

[0019] The diagonal length of the measurement field of view is set to 10m according to the measurement object, the spatial measurement resolution of the temperature field is 20cm, and the pixel of the CCD should be at least 500, so you can choose a 640x480 (or above) infrared temperature measurement camera and a 640x480 (or more) pixel depth camera, can meet the requirements.

[0020] The selection of the lens needs to consider the constraints of object distance, measurement requirements and other comprehensive conditions to complete the selection of the lens.

[0021] The support structure of the automatic measurement system is the support plate; the support plate is to fix the infrared...

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Abstract

The invention provides a method and device for automatically measuring a temperature field in a non-contact biological fermentation process, which realizes the measurement of the whole temperature field of a fermentation tank and establishes an internal relation between the temperature field and a space field. The method comprises the steps of establishing at least one pair of infrared camera anddepth camera with the relative position and attitude relationship being constant; in the pair of cameras, calibrating internal parameters and external parameters containing position and attitude information of the infrared camera; calibrating internal parameters and external parameters containing position and attitude information of the depth camera; calibrating the position and the attitude between the infrared camera and the depth camera and registering pixels of the infrared camera and the depth camera; and completing the calibration and registration to enable image coordinates between theinfrared camera and the depth camera to be in one-to-one correspondence. The device is provided with at least one pair of infrared camera and depth camera with the relative position and attitude relationship being constant, the infrared camera and the depth camera are calibrated through the same calibration plate, and the calibrated infrared camera image and depth camera image achieve pixel registration.

Description

technical field [0001] The invention relates to an automatic measurement method and device for a temperature field in a biological fermentation process, in particular to an automatic measurement method and a device for non-contact measurement of a temperature field in a biological fermentation process. Background technique [0002] The existing fermenter temperature measurement system basically uses traditional thermocouples or thermal resistances to go deep into the solution of the fermenter to measure the fixed-point temperature. Due to space and layout requirements, there are often not many points for measuring temperature. The disadvantage of this measurement method is obvious. For the entire fermenter, only local fixed-point temperature measurement can be carried out, and the temperature change of each point in the fermenter cannot be accurately grasped, let alone the measurement of the entire temperature field in the fermenter. In actual production, the temperature of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G06T7/80
CPCG01J5/00G06T7/80G01J5/80
Inventor 毕德学李亚丁彦玉石磊何琳琳
Owner TIANJIN UNIV OF SCI & TECH
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