Method for monitoring and diagnosing indoor air quality (IAQ) sensor on line

A sensor and air technology, applied in instruments, special data processing applications, electrical digital data processing, etc., can solve the problems of high cost, waste of manpower and material resources, and increased cost of sensors, and achieve low cost, good initiative, and targeted strong effect

Active Publication Date: 2012-03-28
JIZHONG ENERGY SAVING TECH SUZHOU
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AI Technical Summary

Problems solved by technology

[0004] These technical means mainly have the following shortcomings: firstly, the cost is high, and the installation of redundant sensors will inevitably increase the corresponding cost; secondly, the passiveness, this kind of regular calibration must have a certain time interval, which will cause the equipment to be in a blind spot, even if a failure occurs It can only be known by waiting for the next inspection time; blindness, regular calibration, no matter whether there is any problem with the sensor, it must be calibrated, which is a waste of manpower and material resources to a certain extent, and those sensors with symptoms should be calibrated first

Method used

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Embodiment Construction

[0037] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0038] Embodiments of the invention include:

[0039] A method for on-line monitoring and diagnosing IAQ sensors, the method is based on an IAQ sensor virtual model through a control chart for IAQ sensor on-line monitoring and diagnosis, the control chart will IAQ sensor virtual model predicted IAQ parameter value and sensor Mean differences and variances between measured IAQ parameter values ​​were monitored.

[0040] The construction method of the control chart is as follows:

[0041] a. Select N from the HVAC system to remove outliers train A training data set consisting of measurements and N in chronological order test A test data set consisting of consecutive data points,

[0042] The r...

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Abstract

The invention discloses a method for monitoring and diagnosing an indoor air quality (IAQ) sensor on line. In the invention, on the base of the virtual model of an IAQ sensor, the IAQ sensor is monitored and diagnosed on line through a control graph, wherein the control graph can monitor the mean difference and variance between an IAQ parameter value predicted by the virtual model of the IAQ sensor and an IAQ parameter value measured by the sensor. By the model, according to the invention, as the accurate, stable and reliable virtual model of the IAQ has the functions of monitoring the IAQ sensor on line, initiatively finding potential faults, timely maintaining and calibrating the sensor, the invention has the advantages that the cost is low, the initiative is good, and the pertinence is strong.

Description

technical field [0001] The invention relates to the field of building energy saving, in particular to a method for online monitoring and diagnosing indoor air quality sensors. Background technique [0002] Building energy efficiency is a relatively young industry. After nearly 20 years of development, it has developed from simply replacing new equipment for energy saving to using a large number of IT and automatic control technologies to achieve energy saving and improve indoor comfort. However, 90% of China's building energy-saving companies are still at the level of equipment replacement. Nearly 50% of the building's energy consumption is used in the HVAC system, so energy saving for the HVAC system is the focus. [0003] Proper and efficient operation of HVAC systems relies on the output of various sensors, especially indoor air quality sensors (such as carbon dioxide, humidity and temperature sensors). In order to ensure the normal operation of these important sensors,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 宋哲周炯
Owner JIZHONG ENERGY SAVING TECH SUZHOU
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