Method for weighing filter paper bag with constant weight when filter paper bag is still hot

Abstract

The invention relates to the field of filter paper bag weighing, and discloses a filter paper bag hot constant weight weighing method comprising the following steps: obtaining first internal environment data of a weighing box and an initial temperature value of a filter paper bag; the filter paper bag is placed in the weighing box, and second internal environment data of the weighing box are obtained; the environment of the weighing box is adjusted according to the first internal environment data and the second internal environment data, so that the temperature value in the weighing box reaches the initial temperature value of the filter paper bag; after the environment of the weighing box is adjusted, the initial weight of the filter paper bag is obtained; parameters of the filter paper bag and parameters of the weighing box are obtained; and correcting the initial weight of the filter paper bag according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag. By controlling and adjusting the weighing environment of the filter paper bag, constant-weight weighing of the filter paper bag while the filter paper bag is hot is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of filter paper bag weighing, in particular to a method for weighing a filter paper bag while hot and at a constant weight. Background Art

[0002] With the tightening of automobile engine emission regulations, the emission requirements for particulate matter in automobile emissions are becoming more and more stringent. The control and measurement of particulate matter has always been the focus and difficulty of automobile engine exhaust pollutant research. When measuring automobile exhaust particulate matter, the exhaust particles emitted by the automobile are generally collected through sampling filter paper, and the weight of the sampling filter paper before and after collection is weighed to obtain the weight of the particulate matter.

[0003] However, during the weighing process, the temperature, humidity and atmospheric pressure of the weighing environment will affect the weight of the sampling filter paper, making it difficult to ensure the accuracy of the weighing results. Therefore, a method for weighing the filter paper package while hot at a constant weight is urgently needed to reduce the impact of environmental factors on the weighing results of the filter paper package and realize hot constant weight weighing of the filter paper package. Summary of the invention

[0004] The purpose of the present invention is to provide a method for weighing a filter paper bag while hot at a constant weight, so as to solve the problem that the temperature, humidity and atmospheric pressure of the weighing environment will affect the weight of the sampling filter paper, and it is difficult to ensure the accuracy of the weighing result.

[0005] The present invention provides a method for weighing a filter paper bag while hot at a constant weight, comprising: Acquire the first internal environment data of the weighing box and the initial temperature value of the filter paper bag; Placing the filter paper bag in the weighing box and acquiring second internal environment data of the weighing box; Adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data so that the temperature value in the weighing box reaches the initial temperature value of the filter paper bag; After adjusting the environment of the weighing box, obtaining the initial weight of the filter paper bag; Obtaining parameters of the filter paper bag and parameters of the weighing box; The initial weight of the filter paper bag is corrected according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag.

[0006] In some embodiments of the present application, the first internal environment data includes a first temperature, a first humidity, and a first air pressure; The second internal environment data includes a second temperature, a second humidity, and a second air pressure.

[0007] In some embodiments of the present application, a weighing instrument, a temperature sensor, a humidity sensor, an air pressure sensor and a control module are provided in the weighing box; The weighing instrument is used to obtain the weight data of the filter paper bag; The temperature sensor is used to obtain temperature data of the weighing box; The humidity sensor is used to obtain humidity data of the weighing box; The air pressure sensor is used to obtain air pressure data of the weighing box; The control module is used to set the working parameters of the control module according to the first internal environment data and the second internal environment data, and then adjust the environment of the weighing box so that the temperature value in the weighing box reaches the initial temperature value of the filter paper package.

[0008] In some embodiments of the present application, adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data includes: determining a temperature difference between the first temperature and the second temperature, a humidity difference between the first humidity and the second humidity, and an air pressure difference between the first air pressure and the second air pressure; Determining the operating parameters of the control module according to the temperature difference and the humidity difference; Obtaining a real-time temperature value in the weighing box, and determining a ratio between the real-time temperature value and the air pressure difference; The operating parameters of the control module are corrected according to the ratio to obtain the final operating parameters of the control module.

[0009] In some embodiments of the present application, determining the operating parameters of the control module according to the temperature difference and the humidity difference includes: Preset a first heating power P1, a second heating power P2, a third heating power P3 and a fourth heating power P4, as well as a first heating time T1, a second heating time T2, a third heating time T3 and a fourth heating time T4; A first temperature interval, a second temperature interval, a third temperature interval and a fourth temperature interval, and a first humidity interval, a second humidity interval, a third humidity interval and a fourth humidity interval are preset; When the temperature difference is within the first temperature range and the humidity difference is within the first humidity range, setting the operating parameters of the control module to the first heating power P1 and the first heating time T1; When the temperature difference is in the second temperature range and the humidity difference is in the second humidity range, setting the working parameters of the control module to the second heating power P2 and the second heating time T2; When the temperature difference is in the third temperature interval and the humidity difference is in the third humidity interval, setting the working parameters of the control module to the third heating power P3 and the third heating time T3; When the temperature difference is in the fourth temperature range and the humidity difference is in the fourth humidity range, the operating parameters of the control module are set to a fourth heating power P4 and a fourth heating time T4.

[0010] In some embodiments of the present application, a first ratio interval, a second ratio interval, a third ratio interval, and a fourth ratio interval are preset; When the ratio is in the first ratio interval, the first preset correction coefficient a1 is selected to correct the first heating power P1, the corrected heating power is P1*a1, and the final working parameters are the heating power P1*a1 and the first heating time T1; When the ratio is in the second ratio interval, the second preset correction coefficient a2 is selected to correct the second heating power P2, the corrected heating power is P2*a2, and the final working parameters are the heating power P2*a2 and the second heating time T2; When the ratio is in the third ratio interval, the third preset correction coefficient a3 is selected to correct the third heating power P3, the corrected heating power is P3*a3, and the final working parameters are the heating power P3*a3 and the third heating time T3; When the ratio is in the fourth ratio interval, the fourth preset correction coefficient a4 is selected to correct the fourth heating power P4, the corrected heating power is P4*a4, and the final working parameters are the heating power P4*a4 and the fourth heating time T4.

[0011] In some embodiments of the present application, the parameters of the filter paper pack include filter paper density; The parameters of the weighing box include the air density in the weighing box.

[0012] In some embodiments of the present application, the initial weight of the filter paper bag is corrected according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag, including: Determining the buoyancy correction coefficient of the filter paper bag according to the parameters of the filter paper bag and the parameters of the weighing box; The initial weight of the filter paper bag is corrected according to the buoyancy correction coefficient to obtain the actual weight of the filter paper bag.

[0013] In some embodiments of the present application, the actual weight of the filter paper bag is calculated as follows:

[0014] in, is the actual weight of the filter paper bag, is the buoyancy correction factor, is the initial weight of the filter paper pack, is the air density in the heavy box, is the density of filter paper.

[0015] In some embodiments of the present application, obtaining the initial weight of the filter paper package includes: The weight of the filter paper bag is measured several times, and the average value of the several measurement results is determined as the initial weight of the filter paper bag.

[0016] The present invention provides a method for weighing a filter paper bag while hot at a constant weight, comprising: obtaining first internal environment data of a weighing box and an initial temperature value of the filter paper bag; placing the filter paper bag in the weighing box and obtaining second internal environment data of the weighing box; adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data so that the temperature value in the weighing box reaches the initial temperature value of the filter paper bag; obtaining the initial weight of the filter paper bag after adjusting the environment of the weighing box; obtaining parameters of the filter paper bag and parameters of the weighing box; and correcting the initial weight of the filter paper bag according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag.

[0017] The present invention analyzes the first internal environment data and the second internal environment data before and after the filter paper bag is placed in the weighing box, so as to keep the temperature of the filter paper bag constant and weigh the weight of the filter paper bag, thereby reducing the influence of the temperature, humidity and atmospheric pressure of the weighing environment on the weight of the filter paper bag, ensuring the accuracy of the weighing result, improving the efficiency of the filter paper bag weighing, and reducing the weighing error.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a flow chart of a method for weighing a filter paper bag while hot at a constant weight. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same general meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0022] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof, without excluding other elements or objects. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or position relationship indicated by terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like is based on the orientation or position relationship shown in the drawings. It is only a relationship word determined for the convenience of describing the structural relationship of each component or element of the present invention, not specifically referring to any component or element in the invention, and cannot be understood as a limitation on the invention. Terms such as "fixed connection", "connected", "connected" and the like should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances, and they should not be understood as limitations on the present invention.

[0023] Example The present invention discloses a method for weighing a filter paper bag while it is hot. Figure 1 As shown, including: S1, obtaining first internal environment data of the weighing box and an initial temperature value of the filter paper package.

[0024] S2, placing the filter paper package in the weighing box, and obtaining second internal environment data of the weighing box.

[0025] S3, adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data, so that the temperature value in the weighing box reaches the initial temperature value of the filter paper package.

[0026] S4, after adjusting the environment of the weighing box, obtaining the initial weight of the filter paper package.

[0027] S5, obtaining parameters of the filter paper package and parameters of the weighing box.

[0028] S6, correcting the initial weight of the filter paper bag according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag.

[0029] In some embodiments of the present application, the first internal environment data includes a first temperature, a first humidity, and a first air pressure.

[0030] The second internal environment data includes a second temperature, a second humidity, and a second air pressure.

[0031] In this embodiment, changes in temperature, humidity and atmospheric pressure in the weighing environment will cause changes in the weight of the filter paper package. Therefore, in order to ensure the accuracy of the weighing results of the filter paper package, it is necessary to detect and judge the weighing environment. Therefore, when detecting the environment inside the weighing box, it is necessary to detect the temperature, humidity and air pressure inside the weighing box.

[0032] In some embodiments of the present application, a weighing instrument, a temperature sensor, a humidity sensor, an air pressure sensor and a control module are provided in the weighing box.

[0033] The weighing instrument is used to obtain the weight data of the filter paper package.

[0034] The temperature sensor is used to obtain temperature data of the weighing box.

[0035] The humidity sensor is used to obtain humidity data of the weighing box.

[0036] The air pressure sensor is used to obtain air pressure data of the weighing box.

[0037] The control module is used to set the working parameters of the control module according to the first internal environment data and the second internal environment data, and then adjust the environment of the weighing box so that the temperature value in the weighing box reaches the initial temperature value of the filter paper package.

[0038] In this embodiment, the weighing instrument uses an electronic ultra-micro balance with a readability of 0.1 micrograms. An ultra-micro balance is a high-precision electronic balance, and its weighing range is usually between 0.1 mg and 100 mg. This balance is mainly used in laboratories, pharmaceutical research and development, jewelry industry and other fields, and has extremely high requirements for accurate weighing of samples. Automobile exhaust particulate matter is collected in the filter paper bag, and the weight of automobile exhaust particulate matter is very small. Therefore, an ultra-micro balance is used to weigh the filter paper bag.

[0039] In some embodiments of the present application, adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data includes: A temperature difference between the first temperature and the second temperature, a humidity difference between the first humidity and the second humidity, and an air pressure difference between the first air pressure and the second air pressure are determined.

[0040] The operating parameters of the control module are determined according to the temperature difference and the humidity difference.

[0041] A real-time temperature value in the weighing box is obtained, and a ratio between the real-time temperature value and the air pressure difference is determined.

[0042] The operating parameters of the control module are corrected according to the ratio to obtain the final operating parameters of the control module.

[0043] In this embodiment, in order to ensure the constancy of the weighing environment, that is, to ensure the constant temperature of the filter paper bag and reduce the impact on the weighing of the filter paper bag, the first internal environment data and the second internal environment data are analyzed and processed to determine the temperature difference between the first temperature and the second temperature, the humidity difference between the first humidity and the second humidity, and the air pressure difference between the first air pressure and the second air pressure. The working parameters of the control module are set according to the temperature difference, humidity difference and air pressure difference, and the environment inside the weighing box is adjusted and controlled.

[0044] In some embodiments of the present application, a method for setting working parameters of a control module according to a temperature difference and a humidity difference is disclosed, wherein the working parameters of the control module are determined according to the temperature difference and the humidity difference, including: The first heating power P1, the second heating power P2, the third heating power P3 and the fourth heating power P4, as well as the first heating time T1, the second heating time T2, the third heating time T3 and the fourth heating time T4 are preset.

[0045] A first temperature interval, a second temperature interval, a third temperature interval and a fourth temperature interval, and a first humidity interval, a second humidity interval, a third humidity interval and a fourth humidity interval are preset.

[0046] When the temperature difference is within the first temperature range and the humidity difference is within the first humidity range, the operating parameters of the control module are set to be the first heating power P1 and the first heating time T1.

[0047] When the temperature difference is within the second temperature range and the humidity difference is within the second humidity range, the operating parameters of the control module are set to the second heating power P2 and the second heating time T2.

[0048] When the temperature difference is within the third temperature range and the humidity difference is within the third humidity range, the operating parameters of the control module are set to a third heating power P3 and a third heating time T3.

[0049] When the temperature difference is in the fourth temperature range and the humidity difference is in the fourth humidity range, the operating parameters of the control module are set to a fourth heating power P4 and a fourth heating time T4.

[0050] In some embodiments of the present application, a specific method for correcting the working parameters of the control module according to the ratio between the real-time temperature value and the air pressure difference is disclosed, and a first ratio interval, a second ratio interval, a third ratio interval and a fourth ratio interval are pre-set.

[0051] When the ratio is in the first ratio interval, the first preset correction coefficient a1 is selected to correct the first heating power P1, the corrected heating power is P1*a1, and the final working parameters are the heating power P1*a1 and the first heating time T1.

[0052] When the ratio is in the second ratio interval, the second preset correction coefficient a2 is selected to correct the second heating power P2, the corrected heating power is P2*a2, and the final working parameters are the heating power P2*a2 and the second heating time T2.

[0053] When the ratio is in the third ratio interval, the third preset correction coefficient a3 is selected to correct the third heating power P3, the corrected heating power is P3*a3, and the final working parameters are the heating power P3*a3 and the third heating time T3.

[0054] When the ratio is in the fourth ratio interval, the fourth preset correction coefficient a4 is selected to correct the fourth heating power P4, the corrected heating power is P4*a4, and the final working parameters are the heating power P4*a4 and the fourth heating time T4.

[0055] In some embodiments of the present application, the parameters of the filter paper package include filter paper density.

[0056] The parameters of the weighing box include the air density in the weighing box.

[0057] In some embodiments of the present application, the initial weight of the filter paper bag is corrected according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag, including: The buoyancy correction coefficient of the filter paper bag is determined according to the parameters of the filter paper bag and the parameters of the weighing box.

[0058] The initial weight of the filter paper bag is corrected according to the buoyancy correction coefficient to obtain the actual weight of the filter paper bag.

[0059] In this embodiment, since the weight of the filter paper bag is very small, the buoyancy in the air has a certain influence on the weight of the filter paper bag. Therefore, when determining the actual weight of the filter paper bag, it is necessary to perform a buoyancy correction on the initial weight of the filter paper bag.

[0060] In some embodiments of the present application, the actual weight of the filter paper bag is calculated as follows:

[0061] in, is the actual weight of the filter paper bag, is the buoyancy correction factor, is the initial weight of the filter paper pack, is the air density in the heavy box, is the density of filter paper.

[0062] In some embodiments of the present application, obtaining the initial weight of the filter paper package includes: The weight of the filter paper bag is measured several times, and the average value of the several measurement results is determined as the initial weight of the filter paper bag.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

[0064] The system provided in the above embodiment is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be decomposed or combined. For example, the modules in the above embodiment can be combined into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not regarded as improper limitations of the present invention.

[0065] Those skilled in the art should be able to appreciate that the modules and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software or a combination of the two, and the programs corresponding to the software modules and method steps can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the technical field. In order to clearly illustrate the interchangeability of electronic hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

Claims

1. A method for weighing a filter paper bag while hot, characterized in that: include: Acquire the first internal environment data of the weighing box and the initial temperature value of the filter paper bag; Placing the filter paper bag in the weighing box and acquiring second internal environment data of the weighing box; Adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data so that the temperature value in the weighing box reaches the initial temperature value of the filter paper bag; After adjusting the environment of the weighing box, obtaining the initial weight of the filter paper bag; Obtaining parameters of the filter paper bag and parameters of the weighing box; The initial weight of the filter paper bag is corrected according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag.

2. A method for weighing a filter paper bag while hot at a constant weight according to claim 1, characterized in that: The first internal environment data includes a first temperature, a first humidity and a first air pressure; The second internal environment data includes a second temperature, a second humidity, and a second air pressure.

3. A method for weighing a filter paper bag while hot at a constant weight according to claim 2, characterized in that: The weighing box is provided with a weighing instrument, a temperature sensor, a humidity sensor, an air pressure sensor and a control module; The weighing instrument is used to obtain the weight data of the filter paper bag; The temperature sensor is used to obtain temperature data of the weighing box; The humidity sensor is used to obtain humidity data of the weighing box; The air pressure sensor is used to obtain air pressure data of the weighing box; The control module is used to set the working parameters of the control module according to the first internal environment data and the second internal environment data, and then adjust the environment of the weighing box so that the temperature value in the weighing box reaches the initial temperature value of the filter paper package.

4. A method for weighing a filter paper bag while hot at a constant weight according to claim 3, characterized in that: Adjusting the environment of the weighing box according to the first internal environment data and the second internal environment data includes: determining a temperature difference between the first temperature and the second temperature, a humidity difference between the first humidity and the second humidity, and an air pressure difference between the first air pressure and the second air pressure; Determining the operating parameters of the control module according to the temperature difference and the humidity difference; Obtaining a real-time temperature value in the weighing box, and determining a ratio between the real-time temperature value and the air pressure difference; The operating parameters of the control module are corrected according to the ratio to obtain the final operating parameters of the control module.

5. A method for weighing a filter paper bag while hot at a constant weight according to claim 4, characterized in that: Determining the operating parameters of the control module according to the temperature difference and the humidity difference includes: Preset a first heating power P1, a second heating power P2, a third heating power P3 and a fourth heating power P4, as well as a first heating time T1, a second heating time T2, a third heating time T3 and a fourth heating time T4; A first temperature interval, a second temperature interval, a third temperature interval and a fourth temperature interval, and a first humidity interval, a second humidity interval, a third humidity interval and a fourth humidity interval are preset; When the temperature difference is within the first temperature range and the humidity difference is within the first humidity range, setting the operating parameters of the control module to the first heating power P1 and the first heating time T1; When the temperature difference is in the second temperature range and the humidity difference is in the second humidity range, setting the working parameters of the control module to the second heating power P2 and the second heating time T2; When the temperature difference is in the third temperature interval and the humidity difference is in the third humidity interval, setting the working parameters of the control module to the third heating power P3 and the third heating time T3; When the temperature difference is in the fourth temperature range and the humidity difference is in the fourth humidity range, the operating parameters of the control module are set to a fourth heating power P4 and a fourth heating time T4.

6. A method for weighing a filter paper bag while hot at a constant weight according to claim 5, characterized in that: A first ratio interval, a second ratio interval, a third ratio interval and a fourth ratio interval are preset; When the ratio is in the first ratio interval, the first preset correction coefficient a1 is selected to correct the first heating power P1, the corrected heating power is P1*a1, and the final working parameters are the heating power P1*a1 and the first heating time T1; When the ratio is in the second ratio interval, the second preset correction coefficient a2 is selected to correct the second heating power P2, the corrected heating power is P2*a2, and the final working parameters are the heating power P2*a2 and the second heating time T2; When the ratio is in the third ratio interval, the third preset correction coefficient a3 is selected to correct the third heating power P3, the corrected heating power is P3*a3, and the final working parameters are the heating power P3*a3 and the third heating time T3; When the ratio is in the fourth ratio interval, the fourth preset correction coefficient a4 is selected to correct the fourth heating power P4, the corrected heating power is P4*a4, and the final working parameters are the heating power P4*a4 and the fourth heating time T4.

7. A method for weighing a filter paper bag while hot at a constant weight according to claim 1, characterized in that: The parameters of the filter paper pack include filter paper density; The parameters of the weighing box include the air density in the weighing box.

8. A method for weighing a filter paper bag while hot at a constant weight according to claim 7, characterized in that: Correcting the initial weight of the filter paper bag according to the parameters of the filter paper bag and the parameters of the weighing box to obtain the actual weight of the filter paper bag includes: Determining the buoyancy correction coefficient of the filter paper bag according to the parameters of the filter paper bag and the parameters of the weighing box; The initial weight of the filter paper bag is corrected according to the buoyancy correction coefficient to obtain the actual weight of the filter paper bag.

9. A method for weighing a filter paper bag while hot at a constant weight according to claim 8, characterized in that: The actual weight of the filter paper bag is calculated as follows: in, is the actual weight of the filter paper bag, is the buoyancy correction factor, is the initial weight of the filter paper pack, is the air density in the heavy box, is the density of filter paper.

10. A method for weighing a filter paper bag while hot at a constant weight according to claim 1, characterized in that: Obtaining the initial weight of the filter paper bag comprises: The weight of the filter paper bag is measured several times, and the average value of the several measurement results is determined as the initial weight of the filter paper bag.

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