Unlock instant, AI-driven research and patent intelligence for your innovation.

Humidity sensor response and recovery time measuring device and method

A technology of humidity sensor and recovery time, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as inability to meet the response time test, and achieve the effect of meeting the needs of automatic measurement

Active Publication Date: 2021-07-13
JIANGNAN UNIV
View PDF24 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to overcome the problem that the humidity sensor response and recovery time measurement device in the prior art cannot meet the requirements of the response time test, and provide a humidity sensor response and recovery time measurement device and method, the device It can provide standardized humidity step change, and perform humidity compensation on both sides of the humidity step change at the same time as the humidity step change; this method can compensate the response time for the error caused by the humidity step change, so that the humidity sensor can be realized High-precision, idealized measurements of response and recovery times

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Humidity sensor response and recovery time measuring device and method
  • Humidity sensor response and recovery time measuring device and method
  • Humidity sensor response and recovery time measuring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to figure 1As shown, a humidity sensor response and recovery time measurement device of the present invention includes an outer box 1, an inner box 2, a humidity generating device 3 and a humidity compensation device 11, and the inner box 2 is arranged in the outer box 1 , the inner box 2 is provided with a drive assembly 10 and a test bracket 9 for placing the sensor to be tested, a skylight is provided on the side wall of the inner box 2, and the drive assembly 10 drives the test bracket 9 from the The skylight enters and exits the inner box 2 and the outer box 1; the humidity generating device 3 communicates with the inner box 2 and the outer box 1 through a pipeline, and a solenoid valve 4 for controlling the switch is set on the pipeline. The humidity compensation device 11 is electrically connected to the solenoid valve 4, and the humidity compensation device 11 outputs modulated PWM through a PID algorithm with humidity compensation to adjust the switching ...

Embodiment 2

[0044] refer to image 3 As shown, a humidity sensor response and recovery time measurement method of the present invention, using the above-mentioned humidity sensor response and recovery time measurement device, includes the following steps:

[0045] (1) Turn on the measurement device, the test bracket rises to the outside of the inner box through the skylight, place the humidity sensor to be tested in the test bracket, and connect it to the acquisition and recording equipment.

[0046] (2) Set the test temperature so that the temperature of the inner and outer boxes reaches the target value and stabilizes.

[0047] (3) Set the target humidity of the outer box and the inner box, that is, the humidity step condition, return the test bracket to the inner box, and seal the skylight with the sealing cover, so that the inner box is in a sealed state.

[0048] (4) After the temperature and humidity of the inner and outer boxes are stabilized, the test bracket rises to the outside...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a humidity sensor response and recovery time measuring device and method. The measuring device comprises an outer box body, an inner box body, a humidity generating device and a humidity compensating device, wherein a driving assembly and a testing support are arranged in the inner box body, and a skylight is formed in the side wall of the inner box body; the driving assembly drives the testing support to enter and exit the inner box body and the outer box body from the skylight. The humidity generating device is respectively communicated with the inner box body and the outer box body through a pipeline, an electromagnetic valve for controlling a switch is arranged on the pipeline, the humidity compensating device outputs modulated PWM through a PI D algorithm with humidity compensation, the on-off frequency of the electromagnetic valve is adjusted, and the humidity compensating device is used for compensating and controlling the humidity of the inner box body and the outer box body in real time when the testing support enters and exits from the inner box body and the outer box body. In the measurement method, after the device is adopted to complete measurement, a response time compensation formula is also combined to obtain idealized response and recovery time.

Description

technical field [0001] The invention relates to the technical field of sensor detection equipment, in particular to a humidity sensor response and recovery time measurement device and method. Background technique [0002] The humidity sensor is a detection device that converts environmental humidity information into electrical signals based on sensitive components. It is widely used in humidity monitoring in industrial production, agricultural planting, medical monitoring, food storage and other links. With the rapid development of industries such as the Internet of Things, humidity sensors are one of the most in-demand underlying sensing components, and the global annual consumption is increasing year by year. Response and recovery time is an important index parameter of the humidity sensor. In some special application fields, such as real-time monitoring of breathing in medical equipment, the detected humidity usually changes rapidly, and the response and recovery time of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N33/00
CPCG01N33/0062G01N33/007
Inventor 梁峻阁黄宜明丁书聪顾晓峰
Owner JIANGNAN UNIV