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Control circuit and control method of food sample pretreatment instrument

A technology for sample pretreatment and instrument control, which is applied in the preparation of test samples, program control in sequence/logic controllers, instruments, etc. Accurate test steps, reduce workload, and reduce errors

Active Publication Date: 2018-02-06
南京广龙厨具工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this kind of analysis, operations such as stirring, heating, and centrifugation are often required. In the prior art, the operator performs manual step-by-step operations. This kind of operation process is cumbersome and takes up a lot of time for the operator. During the operation, the stirring force will be slightly different, and the heating time cannot be guaranteed to be completely consistent, which will affect the test results, and because there are many test steps, it is easy to make mistakes such as confusion of steps or omissions in a large number of tests

Method used

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  • Control circuit and control method of food sample pretreatment instrument
  • Control circuit and control method of food sample pretreatment instrument
  • Control circuit and control method of food sample pretreatment instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: Measuring the formaldehyde content in soybean louver. The method described in Example 1 can also be used to test the formaldehyde content in kelp, only need to change the bean louver in the raw material to formaldehyde.

[0061] Step 1: Add raw materials to be detected in each centrifuge tube 34; the raw materials are 1 gram of bean louvers and 10 grams of water; start the second switching power supply C, and the first PLC control chip and the second PLC control chip start to work;

[0062] Step 2: The first lifting motor 1 is controlled by the first PLC control chip to start, the first lifting motor 1 drives the first screw rod 3 to go down, and the first screw rod 3 is driven to move up by the servo motor sleeve horizontal plate 5 and support column 6 The disc 22 moves downward on the first guide column 17, so that the servo motor 7 installed on the upper moving disc, the crushing and stirring motor 14, and the paddle 30 in the multi-stage transmission mech...

Embodiment 2

[0071] Embodiment 2: Measuring the content of linoleic acid in the shredded jellyfish. Example 2 differs from Example 1 in that Example 2 uses a heating step.

[0072] Step 1: Add raw materials to be detected in each centrifuge tube 34; the raw materials are 1 gram of jellyfish silk and 10 grams of water; start the second switching power supply C, and the first PLC control chip and the second PLC control chip start to work;

[0073] Step 2: The first lifting motor 1 is controlled by the first PLC control chip to start, the first lifting motor 1 drives the first screw rod 3 to go down, and the first screw rod 3 is driven to move up by the servo motor sleeve horizontal plate 5 and support column 6 The disc 22 moves downward on the first guide column 17, so that the servo motor 7 installed on the upper moving disc, the crushing and stirring motor 14, and the paddle 30 in the multi-stage transmission mechanism move down until the paddle 30 extends into the centrifuge. In the pipe...

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PUM

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Abstract

The invention discloses a control circuit of a food sample pretreatment apparatus and a control method thereof. The control circuit comprises a grinding and stirring motor controlling each component of a test stand, a first elevating motor, a second elevating motor, a servo motor, a first PLC control chip and a second PLC control chip. A model of the first PLC control chip is DVP28SV and a model of the second PLC control chip is DVP16SP11T. The first elevating motor, the second elevating motor, the grinding and stirring motor and the servo motor are connected to the first PLC control chip. The test stand comprises a reagent bottle. A metering pump of a bottleneck of the reagent bottle is connected to the second PLC control chip. By using the circuit and the method of the invention, a common medicament test stand becomes electronic and intelligent; in each step of test operation in the control method, an operator does not need to directly interfere an experiment apparatus so that test steps of adding medicament, stirring and the like are accurate; standards of multiple times of test processes are unified and an error is reduced; simultaneously workloads of the operator are mitigated.

Description

technical field [0001] The invention relates to the field of food detection, in particular to a control circuit and a control method of a food sample pretreatment instrument. Background technique [0002] In medical experiments, it is often necessary to perform pre-processing analysis on a specific component of a drug or food. In this kind of analysis, operations such as stirring, heating, and centrifugation are often required. In the prior art, the operator performs manual step-by-step operations. This kind of operation process is cumbersome and takes up a lot of time for the operator. During operation, the stirring intensity will be slightly different, and the heating time cannot be guaranteed to be completely consistent, which will affect the test results. Due to the large number of test steps, it is easy to make mistakes such as confusion of steps or omissions in a large number of tests. Contents of the invention [0003] Aiming at the shortcomings of the prior art, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05G01N1/28
CPCG01N1/28G05B19/052G05B2219/1204
Inventor 徐安林房磊王占东林伟
Owner 南京广龙厨具工程有限公司