Device for rapidly measuring response time of humidity sensitive element

Abstract

The invention provides a device for rapidly measuring the response time of a humidity sensitive element, and the device comprises a low-humidity sealed space which is used for generating a low-humidity sealed environment; the high-humidity sealed space and the low-humidity sealed space are isolated from each other through a wall, and a channel is formed in the wall; the test shaft is suitable for penetrating through the channel, one end of the test shaft is located in the low-humidity sealed space, and the other end of the test shaft is located in the high-humidity sealed space; the humidity-sensitive element base is arranged on a test shaft and is suitable for carrying a humidity-sensitive element to be tested, and the test shaft is suitable for moving the humidity-sensitive element to be tested carried on the test shaft between the low-humidity sealed space and the high-humidity sealed space; and the sealing structure is arranged in the low-humidity sealed space and / or the high-humidity sealed space. The humidity sensor dynamic parameter measuring system overcomes the defect that a humidity sensor dynamic parameter measuring system in the prior art is slow in high-humidity environment and low-humidity environment switching.

Description

technical field [0001] The invention relates to the technical field of dynamic parameter measurement of a humidity sensor, in particular to a device for quickly measuring the response time of a humidity sensor. Background technique [0002] The measurement of atmospheric humidity, and generally the continuous recording of atmospheric humidity, is an important requirement in most fields of meteorological activity. Capacitive humidity sensors are currently used in the mainstream, and their advantages lie in fast response, small size, and good linearity. In order to better understand the characteristics of the humidity sensor, it is necessary to be able to accurately measure its performance, especially the response time. [0003] There are mainly two types of existing humidity sensitive element response time testing devices. One is to use saturated salt solution as a humidity generator, which is usually used to test the response time at room temperature, but in practical appl...

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the humidity sensor dynamic parameter measurement system in the prior art has a relatively slow switching between high and low humidity environments.

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