Automatic control mechanism of flow rate of two-pressure humidity generator

Abstract

The invention discloses an automatic control mechanism of the flow rate of a two-pressure humidity generator in the technical field of the humidity generator. The automatic control mechanism comprisesthe two-pressure humidity generator, a saturator and a flow rate automatic control mechanism, wherein setting keys of a relative humidity target value and a flow rate target value are respectively arranged on a setting interface of the two-pressure humidity generator; the flow rate automatic control mechanism comprises a flow rate needle valve, shaft couplers, a step motor, a potentiometer and asingle chip microcomputer; the output end of each of two ends of the step motor is connected with the shaft coupler; the output end of one end of the step motor is connected with the flow rate needlevalve through the shaft coupler; the output end of the other end of the step motor is connected with the potentiometer through the shaft coupler; the input end of the single chip microcomputer is respectively connected with the potentiometer and a pressure sensor of a saturator; the output end of the single chip microcomputer is connected with the step motor; the flow rate output can be controlledand automatically regulated under the condition of different relative humidity; and the automatic control mechanism is used for the automatic control on the flow rate of the two-pressure humidity generator, and can realize the automatic detection of the two-pressure humidity generator.

Description

technical field [0001] The invention relates to the technical field of humidity generators, in particular to an automatic flow control mechanism for a double-pressure humidity generator, which can control and automatically adjust flow output under different relative humidity, and is used for automatic control of the flow of a double-pressure humidity generator. Background technique [0002] At present, the conventional dual-pressure humidity generators adjust the flow rate manually. Every time the relative humidity is changed, the tester needs to manually adjust the flow needle valve. Not only the adjustment work is repetitive and cumbersome, but also the automatic verification of the dual-pressure humidity generator cannot be realized. [0003] Based on this, the present invention designs an automatic flow control mechanism of a dual-pressure humidity generator to solve the above-mentioned problems. Contents of the invention [0004] The object of the present invention is...

AI Technical Summary

Problems solved by technology

[0002] At present, the conventional dual-pressure method humidity generator is to manually adjust the flow rate. Every time the relative humidity is changed, the tester needs to manually ad

Images