Main controller applied to inhalation exposure system, device and method

Abstract

The invention relates to a main controller applied to an inhalation exposure system, a device and a method. The main controller comprises a micro control unit, an air source pressure monitoring sensor, a generator pressure monitoring sensor, a generator air flow switch electromagnetic valve, a generator mass flow controller, a diluent gas switch electromagnetic valve, a diluent gas mass flow controller, a sampling pump, a sampling mass flow controller, a communication interface for an exposure chamber environment monitoring unit, a communication interface for an exhaust gas treatment device, acommunication interface for an aerosol concentration monitoring device, and a communication interface for an upper computer. The n air source pressure monitoring sensor and the generator pressure monitoring sensor are connected with the micro control unit. Compared with the prior art, the main controller has the advantages that through the main controller that integrates multiple switch electromagnetic valves, mass flow controllers and pressure sensors with the sampling pump, external pipelines and electrical connections of the entire inhalation exposure system are greatly simplified, and accordingly, the system is simple and easy to assemble, debug and maintain in a lab.

Description

technical field [0001] The invention relates to an inhalation exposure system, in particular to a main controller, equipment and method applied to the inhalation exposure system. Background technique [0002] An inhalation exposure system is a laboratory device used in the study of inhalation drug delivery or inhalation toxicity. The respiratory system is the main way for oxygen to enter the human body, and drugs or toxic substances can also enter the human body through the respiratory system. The inhalation exposure system is to allow experimental animals to inhale drugs or toxic substances in a controlled manner under laboratory conditions to conduct research on drug safety and effectiveness or toxicological effects. [0003] The inhalation exposure system usually consists of several parts such as generator, monitoring and control part, exposure chamber, and exhaust gas treatment. The experimental drug is in the form of dust, or in the form of solution after being dissol...

AI Technical Summary

Problems solved by technology

[0007] 1. The assembly and debugging of the whole system is very cumbersome, and the connection relationship between external pipelines and cables is complicated, which may easily cause a failure in a certain link

[0008] 2. The industrial computer is not a special control system for the control function of the exposure system. The desktop operating system usually runs on the host computer, and there are a large number of processes that are not related to inhalation exposure. It is difficult to guarantee the fluency and stability of the system after long-term operation

[0009] 3. The upper computer that should run the user interface acts as the main controller, and it is not easy to realize the remote operation interface

Images