Thermostatic control system of bacterium/fungus culture chamber

Abstract

Disclosed is a temperature control system of bacterial, fungal culture chamber, comprising a PLC control circuit, a chiller, two circulating fans, two electric heaters, a display and a control touch screen. The display and the control touch screen are connected to the PLC control circuit via a bus respectively. There are sensors located at the positions of the chiller and the electric heaters,respectively, and the output of each sensor is connected to the input of the PLC control circuit through analog input modules. The PLC control circuit includes a power supply control circuit, a circulating fan temperature control circuit, a chiller temperature control circuit, an alarm protection circuit and an input-output protective isolation circuit. The system has a simple structure, and the system is easy to operate and protect culture chambers from pollution; the power supply could be controlled and protected well enough to ensure the normal power supply; the system could alarm automatically, therefore it is easy to make a deal timely, and the alarm information could be spread to a remote place; and the system also could provide isolation protection to the input and output terminals to eliminate interference between the various devices.

Description

Technical field [0001] The invention relates to a constant temperature control system for bacteria and fungus cultivation rooms. Background technique [0002] In hospital clinical and medical research experiments, it is often necessary to isolate and cultivate bacteria and fungi from biological samples containing a variety of bacteria and fungi. The temperature of bacterial culture generally needs to be maintained at 30-35°C, and the temperature of fungal culture generally needs to be maintained at 23-28°C. The existing methods for separating and cultivating bacteria and fungi are mostly manual methods. The general process is as follows: Pre-treatment, and then use an inoculator to streak the processed sample onto a petri dish, perform separation and culture to obtain colonies, and further identify bacteria and fungi and detect drug sensitivity. [0003] This manual operation method has considerable disadvantages. It has the following disadvantages: [0004] (1) Since operators dir...

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Problems solved by technology

[0010] The purpose of the present invention is to solve the deficiencies of the existing bacteria and fungi culture chambers, and provide a new type of constant temperature control system for bacteria and fungi culture chambers, which overcomes the fact that traditional culture chambers can only be cultivated for bacteria at one cultivation temperature, such as bacteria with constant temperature Cultivation room or fungal constant temperature cultivation room, because the temperature requirements for the cultivation of the two strains are different, the temperature of the cultivation room cannot be controlled separately according to the demand; the temperature of the cultivation room cannot be intelligently adjusted and displayed, and the process of temperature adjustment is complicated and there are certain operations Dangerous, poor temperature control accuracy, large error, unable to make timely alarm protection when the circulating fan is not turned on normally or the system equipment fails, etc., unable to realize the isolation protection of the input and output terminals of each equipment, and the interference between the equipment is strong , and the process of manual operation is easy to pollute the culture room, the system consumes a lot of power, and the power supply design is unreasonable, etc.

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