KR101613655B1 - Test apparatus and method for gas-phase malodorous substance measuring sensors - Google Patents

Abstract

The present invention relates to a testing apparatus and a testing method for determining precision of a measurement sensor which measures malodorous substances. More particularly, the testing apparatus for a gas-phase malodorous substance measurement sensor in the present invention comprises: a constant temperature/humidity incubator having thermal resistance and durability; a chamber equipped inside the constant temperature/humidity incubator; an odorless bag arranged inside the chamber, and having a known concentration of a standard malodorous substance; a temperature/humidity measurement sensor to measure temperature and humidity of the standard malodorous substance accommodated in the odorless bag; a malodorous substance measurement sensor to measure concentration of the standard malodorous substance accommodated in the odorless bag; and a booster pump to transfer the standard malodorous substance accommodated in the odorless bag to the temperature/humidity measurement sensor and the malodorous substance measurement sensor.

Description

Technical Field [0001] The present invention relates to a gas-phase malodorous substance measuring sensor,

The present invention relates to a test apparatus and a test method of a malodorous substance measurement sensor for determining the accuracy of a measurement sensor for measuring malodorous substances.

As the industry develops, the convenience of living has been increased, but the environmental destruction caused by various air pollution in the industry has become increasingly severe.

Among these air pollutants, odor is harmful to health and has a mental and aesthetic adverse effect as hydrogen sulfide, mercaptans, amines, and other irritating gaseous substances. Especially, the odor in the room is caused by anorexia, vomiting, Allergic symptoms, mental neurosis, disturbance of emotional life, and deterioration of work efficiency.

Therefore, the effluent facilities that are likely to cause bad odors are managed as odor-intensive management facilities, while others are stipulated as living odor-control facilities.

On the other hand, the measurement methods for judging whether or not the odor emission standard meets the emission allowance criteria include a direct sensory method in which a plurality of researchers measure odor, a method in which an air sample collected in a measurement area is transported to a laboratory, 'Air dilution sensory method' for obtaining the dilution factor when the smell can not be felt while increasing stepwise and 'device analysis method' using the quantitative measurement and analysis equipment.

Among the above methods, 'direct sensory method' and 'air dilution sensory method' have a high possibility of error due to difference in olfactory ability of an individual, so that a device analysis method which obtains more accurate results is preferred.

However, even in the case of the instrumental analysis method, it is necessary to check the accuracy and accuracy of the measurement sensor through periodical inspection in order to obtain a reliable measurement result. However, researches on the apparatus and method for testing such a malodor measuring instrument are insufficient.

Korean Patent Laid-Open Publication No. 2014-0070093 Korean Utility Model Publication No. 2009-0003826

It is an object of the present invention to provide a test equipment and a test method of a measurement sensor which can easily determine the accuracy of a malodor substance measuring sensor while being easy to operate.

In order to achieve the above object, the apparatus for testing a sensor for measuring a malodor of a gaseous substance according to the present invention comprises: a constant temperature / humidity incubator having heat resistance and durability; A chamber having a plurality of spaces defined by partition walls provided inside the incubation incubator; A plurality of odorless bags containing standard odorous substances having known concentrations embedded in each of said chamber spaces; A temperature / humidity measuring sensor for measuring the temperature and humidity of the standard odor material accommodated in the odorless bag; A malodor substance measuring sensor for measuring the concentration of the standard malodorous substance only when the temperature and humidity of the standard malodorous substance contained in the odorless bag fall within a predetermined range; A pressurizing pump for transferring standard odor substances contained in the odorless bag to the temperature / humidity measuring sensor and the odor substance measuring sensor; And an inert gas for cleaning at least one of the temperature / humidity measuring sensor, the odor substance measuring sensor, the pipe communicating with the temperature / humidity measuring sensor, and the pipe communicating with the odor substance measuring sensor, The standard odor materials contained in the odorless bag are characterized by different or identical concentrations.

The apparatus for testing a sensor for measuring a malodorous substance according to the present invention may further include a pressurizing pump for supplying gas to the plurality of space portions to pressurize the odorless bag; A plurality of pressurized air inflow main piping communicating with the pressurizing pump and connected to the plurality of spaces, respectively; And a first solenoid valve provided in the pressurized air inflow main pipe.

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In addition, the apparatus for testing a malodor substance measuring sensor according to the present invention may further include: a standard malodor material discharge line pipe connected directly to each of the plurality of odorless bags, A discharge trunk line connecting the standard malodor material discharge line pipe; A standard malodor material discharge pipe connected to the discharge main pipe for transferring standard malodor material to the temperature / humidity measurement sensor or the malodor material measurement sensor; A flow meter provided in the standard malodor material discharge pipe; And a second solenoid valve provided in the standard malodor substance discharge branch pipe for individually opening and closing the flow of standard malodor material conveyed from the plurality of odorless bags.

 The apparatus for testing a sensor for measuring a malodor substance according to the present invention may further include a controller for controlling at least one of the pressure pump, the first solenoid valve, the second solenoid valve, the temperature / humidity measuring sensor, And a sensor for detecting the presence of the odorous substance in the gas.

In order to accomplish the above object, the present invention provides a method of testing a gaseous odor substance measuring sensor, the method comprising the steps of: measuring a concentration of a known concentration in a chamber space part having a plurality of space parts, A first step of mounting a plurality of odorless bags accommodating standard odor materials; A second step of supplying pressurized air to any one of the plurality of chamber space parts using a pressurizing pump; A third step of transferring a standard odor substance discharged from the odorless bag in the space portion supplied with the pressurized air to a temperature / humidity measuring sensor to determine whether the temperature and humidity correspond to a set value range; When the temperature and humidity of the standard odor substance transferred to the temperature / humidity measurement sensor falls within the set range, the standard odor substance transferred to the temperature / humidity measurement sensor is supplied to the odor substance measurement sensor, And when the temperature and the humidity of the standard odor material transferred to the temperature / humidity measuring sensor are out of the set range, they are discharged to the outside without being supplied to the odor substance measuring sensor, A fourth step of performing a third step by supplying pressurized air to a different space part; A fifth step of calculating a standard odorant concentration by reflecting the temperature / humidity result measured in the third step; And a sixth step of comparing the known concentration of the standard malodor substance with the standard malodor substance concentration obtained in the fifth step to determine the accuracy of the malodor substance measurement sensor, The standard odor substances received are different in the concentration or the same, and the pressurized air supplied in the third step is supplied independently to the plurality of chamber space parts 23.

The test method of the malodor substance measuring sensor according to the present invention is characterized in that the pressurized air in the second step increases or decreases the pressurized air flow rate in accordance with the flow rate to be sent to the temperature / humidity measuring sensor.

According to the apparatus and method for testing a sensor for measuring a gaseous odor substance according to the present invention, standard odor substances contained in an odorless bag can be transferred to a temperature / humidity sensor and a malodor substance measuring sensor through an electronic control method, There is an effect to make.

Further, according to the apparatus and method for testing a measurement sensor according to the present invention, it is possible to mount a plurality of odorless bags accommodating standard odor substances having a known concentration, thereby confirming repetitive reproducibility of the measurement sensor, The precision of the measurement sensor can also be determined for the concentration range.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a device for testing a measurement sensor of a malodorous substance according to the present invention. FIG.
2 is a flowchart showing a method of testing a measurement sensor of a malodor substance according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a test apparatus for measuring a malodor substance according to the present invention will be described in detail with reference to FIG. 1.

The apparatus for testing a sensor for measuring a malodor substance according to the present invention comprises a temperature and humidity incubator 10 having heat resistance and durability, a chamber 20 provided inside a constant temperature and humidity incubator 10, A temperature and humidity measuring sensor 30 for measuring the temperature and humidity of a standard odor material accommodated in the odorless bag 21, an odorless bag 21 containing standard odor substances having a concentration of the odorant, A malodor substance measuring sensor 40 for measuring the concentration of standard malodor substances contained in the odorless bag 21 and a standard malodor substance contained in the odorless bag 21 are measured by the temperature and humidity measurement sensor 30 and the odor substance measurement And a pressure pump 50 for transferring the gas to the sensor 40.

The incubator 10 is a box-shaped container having an empty space portion 23 and includes a chamber 20 accommodated therein, an odorless bag 21, a temperature / humidity measuring sensor 30, Thereby protecting the material measurement sensor 40 and the like from external shocks. In addition, the incubator 10 functions to maintain moisture and temperature at all times by intercepting the inflow or outflow of moisture and heat from the outside so as to accurately measure concentrations and components of odorous substances.

Here, the material of the incubator 10 is not particularly limited, and if necessary, a separate heat insulating layer, a temperature control unit for heating and cooling may be further provided.

The chamber 20 is equipped with an odorless bag 21 containing standard odorous substances having a known concentration. That is, the reason why the standard odor substance having the above-mentioned known concentration is used is that the odor concentration measurement value obtained from the result of the temperature / humidity measurement sensor 30 and the result of the odor substance measurement sensor 40 And to determine the accuracy of the malodor substance measuring sensor 40 by contrast.

Here, the chamber 20 is partitioned by the partition 22 to form a plurality of spaces 23, and the material of the chamber 20 is not particularly limited, but is made of polycarbonate having excellent heat resistance and durability If necessary, a separate heat insulating layer may be further formed.

The odorless bag 21 mounted in each of the plurality of space portions 23 of the chamber 20 can receive standard odorous substances having different concentrations and the plurality of space portions 23 can be accommodated. The standard odor material contained in the odorless bag 21 mounted on the stomach may be the same known concentration.

Therefore, when the concentration of the standard odor substances contained in the odorless bag 21 is different, the accuracy of the odor substance measurement sensor 40 can be determined over a wide concentration range, and the odorless bag having the same known concentration 21) are used in a plurality of times, it is possible to carry out a plurality of times of measurement with respect to one specific concentration, so that the repeatability of the malodor substance measuring sensor 40 can be confirmed.

On the other hand, when the malodorous substances having different concentrations are continuously measured, the previously measured malodorous substances may remain on the transfer pipe or the like, resulting in errors in the result of the malodorous substance measurement sensor.

In order to avoid such a problem, the test apparatus of the present invention is adapted to supply a cleaning gas to a pipe communicated with a temperature / humidity measurement sensor, a malodor substance measurement sensor, a pipe communicated with a temperature / humidity measurement sensor, It is possible to minimize the measurement error that may occur due to the residual odor material supplied in the previous measurement.

Here, the cleaning gas is not particularly limited as long as it is an inert gas, but nitrogen may be preferably used.

It is to be understood that the number of the space portions 23 by the partition wall 22 is not particularly limited and may be appropriately selected in consideration of the number of the odorless bags 21 to be mounted in the space portion 23. [

Next, a description will be made of a configuration for transferring standard odor substances of the odorless bag 21 to the temperature / humidity measurement sensor 30 and the odor substance measurement sensor 40.

1, a front portion of the chamber 20 is provided with an external gas inlet pipe 60 for supplying an external gas to the pressurizing pump 50, a gas inlet pipe 60 for introducing the introduced gas into the plurality of space portions 23, A plurality of pressurized air inflow branch pipes 61 communicating with the pressurizing pump 50 and individually connected to the plurality of space portions 23, And a pressurized air inflow main line pipe 62 for connecting the pressurized air inflow branch line 61 is provided. A standard odor substance discharge branch pipe 71 is connected to each of the plurality of odorless bags 21 at the rear portion of the chamber 20 to transfer standard odor substances. The main trunk pipe 70 is provided with a malodor material discharge pipe 72 communicating with the flow meter 80, the temperature / humidity measuring sensor 30 and the malodor substance measuring sensor 40, Lt; / RTI >

Here, the external gas introduced into the pressurizing pump 50 is a gas whose temperature is adjusted so as not to affect the odorless bag 21 in the chamber 20, and such an adjusting method can be achieved through methods known in the art Therefore, a detailed description will be omitted.

Due to the above-described configuration, the gas introduced from the outside and pressurized by the pressurizing pump 50 flows into the plurality of space portions 23 to press the odorless bag 21, The standard odor material contained in the bag 21 is discharged to the outside after passing through the flow meter 80, the temperature / humidity measurement sensor 30 or the odor substance measurement sensor 40.

Here, the flow meter 80 is for measuring and controlling the flow rate of standard odor substances supplied to the temperature / humidity measurement sensor 30 or the malodor substance measurement sensor 40, The flow rate of the gas supplied from the pressurizing pump 50 may be decreased while the flow rate of the gas supplied from the pressurizing pump 50 may be increased when the supply flow rate is less than the predetermined range.

On the other hand, the flow of the fluid passing through each channel is opened or closed in the external gas inlet pipe 60, the pressurized air inlet branch pipe 61, the standard odor substance discharge branch pipe 71 and the discharge pipe 72, Solenoid valves 63 and 73 are provided. It is possible to press only the odorless bag 21 to be selected through the opening and closing of the solenoid valves 63 and 73 and also to press each odorless bag 21 continuously.

That is, when only the odorless bag 21 accommodated in the first space portion is desired to be pressurized, the inlet pipe solenoid valve 64, the 1-1 solenoid valve, the 2-1 solenoid valve, The discharge pipe solenoid valve 74 is opened and the remaining solenoid valves are closed.

When each odorless bag 21 is continuously pressurized, the solenoid valve 21 is opened and closed as in the case of pressing the odorless bag 21 in the first space portion 24, The solenoid valve 21 may be controlled to press only the odorless bag 21 in the second space 25.

Here, only the case where the odorless bag 21 of the second space 25 is pressed after the odorless bag 21 of the first space 24 is pressurized is described, The pressure in the bags 21 can be changed in any order, and if necessary, after the odorless bag 21 containing the standard odor gas is pressurized, the temperature / humidity measurement sensor, the odor substance measurement sensor, A cleaning gas can be supplied from outside in order to clean the piping.

1, a control unit for electronically controlling the pressurization pump 50, the solenoid valves 63 and 73, the temperature / humidity measurement sensor 30, and the malodor substance measurement sensor 40 may be provided The position of the temperature / humidity measuring sensor 30 and the odor substance measuring sensor 40 provided in the constant temperature / humidity incubator 10 is not particularly limited. However, in terms of compactness of the measuring sensor testing apparatus, 20 or adjacent to the chamber 20, and a heat insulating structure may be employed if necessary.

Hereinafter, a method of testing a measurement sensor of a malodor substance according to the present invention will be described in detail with reference to FIG. 2 attached hereto.

The method for testing a measurement sensor of the present invention is characterized in that a chamber space portion 23 provided inside a constant temperature and humidity incubator 10 and having a plurality of space portions 23 defined by a partition wall 22 is provided with a plurality of odorless bags 21) (step 1).

That is, in the first step, odorless bags 21 containing the same or different standard odor substances having a known concentration are installed in the chamber space part 23, and the accuracy of the odor substance measurement sensor 40 Is a preparatory step for judging whether or not there is a problem.

When the preparation of the odorless bag 21 is completed as described above, a second step of applying pressurized air to one of the plurality of chamber space portions 23 to press the odorless bag 21 is performed.

Herein, the method of pressing the odorless bag 21 of each space part 23 and the method of washing the pipe are as described above, and a detailed description thereof will be omitted.

In the third step, the standard odor substance discharged from the pressurized odorless bag 21 is transferred to the temperature / humidity measurement sensor 30 to determine whether the standard odor substance contained in the odorless bag 21 corresponds to the set value range .

Normally, the standard odor substances contained in the odorless bag 21 adjust humidity and temperature by an artificial means, but the humidity and the temperature may deviate from the appropriate ranges due to the process or mistake of transporting standard odor substances. If such an inappropriate standard odor material is supplied directly to the measurement sensor, the measurement sensor may be contaminated meaninglessly and unnecessary cleaning process may be added.

Therefore, in the fourth step of the present invention, when the measured temperature and humidity of the standard odor substance fall within the set range, the standard odor substance is supplied to the measurement sensor to measure the concentration of the odor substance, A second step of measuring temperature and humidity by pressing a standard odor substance contained in the odorless bag mounted in another space part and measuring the temperature and humidity is repeated.

Next, based on the temperature and humidity results of the standard odor materials obtained through the above steps, the concentration of standard odor substances by the measurement sensor 40 is calculated (step 5), and the standard odor substances used in the measurement The accuracy of the malodor substance measuring sensor 40 is determined in comparison with the known concentration (step 6).

Here, the standard odor materials accommodated in the odorless bag 21 may have different concentrations or the same concentrations, and the odorless bags 21 containing the cleaning gas may be further accommodated, And supplying the cleaning gas to the sensor 30 to clean the pipe.

As described above, the testing device and the testing method of the measuring sensor of the present invention have been described. However, it is obvious that the actual sample requiring measurement of odor in addition to the test of the measuring sensor can be injected into the odorless bag.

10: Constant temperature and humidity incubator
20: chamber
21: Odorless bag 22:
23: space portion
30: Temperature / humidity sensor
40: odor substance measurement sensor
50: Pressure pump
60: External gas inlet pipe
61: incoming branch line piping 62: incoming main line piping
63: first electromagnetic valve 64: inlet pipe solenoid valve
70: Exhaust trunk piping
71: discharge line pipe 72: discharge pipe
73: second solenoid valve 74: discharge pipe solenoid valve
80: Flowmeter

Claims (9)

A constant temperature and humidity incubator having heat resistance and durability; A chamber having a plurality of spaces defined by partition walls provided inside the incubation incubator; A plurality of odorless bags containing standard odorous substances having known concentrations embedded in each of said chamber spaces; A temperature / humidity measuring sensor for measuring the temperature and humidity of the standard odor material accommodated in the odorless bag; A malodor substance measuring sensor for measuring the concentration of the standard malodorous substance only when the temperature and humidity of the standard malodorous substance contained in the odorless bag fall within a predetermined range; A pressurizing pump for transferring standard odor substances contained in the odorless bag to the temperature / humidity measuring sensor and the odor substance measuring sensor; And an inert gas for cleaning at least one of the temperature / humidity measuring sensor, the odor substance measuring sensor, the pipe communicating with the temperature / humidity measuring sensor, and the pipe communicating with the odor substance measuring sensor, Wherein the standard odor substances contained in the odorless bag have different or identical concentrations.
delete delete The apparatus of claim 1, further comprising: a pressurizing pump for supplying gas to the plurality of space portions to pressurize the odorless bag; A plurality of pressurized air inflow main piping communicating with the pressurizing pump and connected to the plurality of spaces, respectively; And a first solenoid valve provided in the pressurized air inflow main pipe.
2. The apparatus according to claim 1, further comprising: a standard malodor material discharge line pipe directly connected to each of the plurality of odorless bags to transfer standard odor material; A discharge trunk line connecting the standard malodor material discharge line pipe; A standard malodor material discharge pipe connected to the discharge main pipe for transferring standard malodor material to the temperature / humidity measurement sensor or the malodor material measurement sensor; A flow meter provided in the standard malodor material discharge pipe; And a second solenoid valve provided in the standard malodor substance discharge branch pipe and capable of individually opening and closing the flow of the standard malodor material conveyed from the plurality of odorless bags.
6. The method according to any one of claims 1 to 5, further comprising: controlling the operation of at least one of the pressure pump, the first solenoid valve, the second solenoid valve, the temperature / humidity measurement sensor, Further comprising a controller for controlling the gas-foul odor substance measuring sensor.
A first step of mounting a plurality of odorless bags accommodating a standard odor substance having a known concentration in a chamber space portion provided in a constant temperature and humidity incubator and having a plurality of space portions defined by partition walls;
A second step of supplying pressurized air to any one of the plurality of chamber space parts using a pressurizing pump;
A third step of transferring a standard odor substance discharged from the odorless bag in the space portion supplied with the pressurized air to a temperature / humidity measuring sensor to determine whether the temperature and humidity correspond to a set value range;
When the temperature and humidity of the standard odor substance transferred to the temperature / humidity measurement sensor falls within the set range, the standard odor substance transferred to the temperature / humidity measurement sensor is supplied to the odor substance measurement sensor to measure the concentration of the odor substance And when the temperature and the humidity of the standard odor substances transferred to the temperature and humidity measuring sensor are out of the set range, they are discharged to the outside without being supplied to the odor substance measuring sensor, A fourth step of performing a third step by supplying pressurized air to the space part;
A fifth step of calculating a standard odorant concentration by reflecting the temperature / humidity result measured in the third step;
And a sixth step of determining the accuracy of the malodor substance measuring sensor by comparing the known concentration of the standard malodor substance with the standard malodor substance concentration obtained in the fifth step,
Wherein the standard odor materials accommodated in the plurality of odorless bags have different concentrations or the same concentrations and the pressurized air supplied in the third step is supplied independently to the plurality of chamber spaces (23) Test method of sensor.
8. The method according to claim 7, wherein the pressurized air in the second step increases / decreases the pressurized air flow rate in accordance with the flow rate to be sent to the temperature / humidity measuring sensor.
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