Combustion heat measuring system and method based on LabVIEW

Abstract

The invention provides a combustion heat measurement system and method based on LabVIEW, and belongs to the technical field of combustion heat measurement. The combustion heat measuring system based on LabVIEW is composed of an upper computer, an intelligent module and a combustion heat measuring module. The combustion heat measuring module is composed of a combustion heat measuring instrument, a temperature sensor and a potential sensor. The intelligent module comprises a data acquisition processor with various signal measurement and control functions and a circuit board; the upper computer is a graphical interface based on LabVIEW and comprises a signal display module, a calibration module, a calorimetric module, a data output module, a baseline setting module and a query module; and after receiving an instruction sent by the upper computer, the intelligent module controls the combustion heat measuring module to calibrate or ignite, acquires a signal generated by the combustion heat measuring module, and transmits the signal to the upper computer for visualization and storage. The device is high in designability and simple and convenient to operate, and can be applied to the field of novel combustion heat measuring devices.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion heat measurement, and in particular to a combustion heat measurement system and method based on LabVIEW. Background Art

[0002] LabVIEW is widely used in test and measurement, industrial automation, control engineering, simulation analysis and other fields. In the field of test and measurement, most mainstream test instruments and data acquisition equipment have special LabVIEW drivers, allowing users to control these hardware devices very conveniently. In the field of industrial automation, LabVIEW can be used to develop various automatic control systems and monitoring systems. With the continuous development of technologies such as the Internet of Things and artificial intelligence, LabVIEW is also constantly innovating and improving. At present, LabVIEW is developing rapidly and has powerful functions. It has strong advantages in data acquisition, simulation, rapid development and other aspects.

[0003] Traditional combustion heat determination instruments are oxygen bomb calorimeters based on the water equivalent method. They have the disadvantages of harsh environmental requirements, large sample size, and are not suitable for explosive and precious samples. Therefore, it is urgent to improve the combustion heat determination method based on the principle. Microcalorimetry is a research method that can study thermodynamics and thermodynamics in situ and online. After decades of development, thermochemical laboratories around the world have developed various types of calorimeters, and the development of new calorimeters has become a hot spot in scientific research. Initially, microcalorimeters were mainly used to monitor low-power heat flows such as protein molecular interactions, phase transition behaviors of materials, and chemical reaction heat in biology. With the deepening of scientific research, microcalorimeters have also been applied to combustion heat determination and other fields. The new combustion heat determination system based on a three-dimensional thermoelectric sensor system is composed of hundreds of thermocouples with the same structure as the core component. By converting the thermal signal generated during the combustion process into an electrical signal, the heat flow can be accurately determined. The combustion heat of precious and explosive samples can be determined at a trace level. It has the advantages of small sample size, accurate measurement, and short experimental process.

[0004] Therefore, providing a combustion heat measurement system based on LabVIEW has important practical significance. Summary of the invention

[0005] The purpose of the present invention is to provide a combustion heat measurement system and method based on LabVIEW, which are matched with the novel combustion heat measurement principle. The combustion heat measurement system and method based on LabVIEW integrate LabVIEW technology, intelligent modules and novel combustion heat measuring instrument, realize the operation control, data visualization and data processing and storage of the novel combustion heat measuring instrument, are easy to operate and have a concise interface, making the combustion heat measurement experiment more convenient, and making a positive contribution to the field of combustion heat measurement.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The present invention provides a combustion heat measurement system based on LabVIEW, which is composed of a host computer (1), an intelligent module (2) and a combustion heat determination module (3);

[0008] The combustion heat measurement module is composed of a combustion heat measurement instrument (4), a temperature sensor (5) and a potential sensor (6);

[0009] The temperature sensor (5) is a platinum thermal resistor;

[0010] The intelligent module (2) comprises a data acquisition processor and a circuit board capable of measuring and controlling multiple signals, wherein the data acquisition processor is based on an ARM processor and FPGA technology and has an embedded real-time embedded operating system Linux or WinCE, and the circuit board is composed of a resistor, a capacitor, a relay and a timer;

[0011] The model of the data acquisition processor is ZTIC / EM9104c;

[0012] The host computer (1) is a graphical interface based on LabVIEW, comprising a signal display module (7), a calibration module (8), a calorimetric module (9), a data output module (10), a baseline setting module (11) and a query module (12);

[0013] The calibration module (8), the calorimetric module (9) and the intelligent module (2) all use an RS232 asynchronous serial port communication method. After receiving the instructions sent by the host computer (1), the intelligent module (2) controls the relay of the circuit board to perform different actions according to different instructions, thereby realizing the control of the calibration or ignition action of the combustion calorimeter.

[0014] Preferably, the display module (7) of the host computer (1) can display the thermoelectric potential, temperature, calibration current, calibration voltage and ignition voltage in real time during the experiment; the calibration module (8) of the host computer (1) is responsible for issuing relevant calibration instructions and can modify the experimental parameters in the calibration experiment;

[0015] Preferably, the calibration can be divided into two modes: electrical calibration and chemical calibration. The calibration module (8) of the host computer (1) is responsible for issuing relevant instructions for electrical calibration or chemical calibration.

[0016] Preferably, the calorimetric module (9) of the host computer (1) is responsible for issuing ignition instructions, modifying ignition experiment parameters and recording experimental data during the experiment; the data output module (10) of the host computer (1) outputs the sample name and experimental operator information of a single experiment.

[0017] Preferably, the baseline setting module (11) of the host computer (1) performs a zeroing operation on the baseline; and the query module (12) of the host computer (1) calls out and queries the locally stored data.

[0018] Preferably, the combustion heat measuring instrument (4) is a new type of combustion heat measuring instrument based on a thermoelectric sensor system; and the potential sensor (6) is a three-dimensional thermoelectric sensor composed of 100 to 1000 thermocouples.

[0019] Preferably, the temperature sensor is Pt100 or Pt1000.

[0020] The present invention also provides a method for measuring combustion heat based on LabVIEW, based on the combustion heat measurement system described in claim 1, comprising the following steps: turning on the combustion heat measuring instrument and computer of the intelligent module (2), clicking to open the software, and entering the main interface of the software; after reaching the main interface, firstly adjusting the display module (7) of the host computer (1), selecting and displaying each signal by selecting whether to check or not, and zooming in or out the signal curve by adjusting the signal range as needed;

[0021] If a calibration experiment is to be conducted, the calibration module (8) selects chemical calibration or electrical calibration, and adjusts the parameters in the calibration experiment according to the sample of the single experiment, so that the experimental data outputted by the calibration module (8) is more accurate; after the calibration module (8) issues a chemical calibration or electrical calibration instruction, the intelligent module (2) controls the relay of the circuit board according to the instruction to control the calibration action; the display module (7) displays the experimental parameters in the calibration experiment in real time; after the experiment is completed, the calibration module (8) reads the data; at the same time, the data output module of the host computer (1) outputs the sample name of the single experiment and the information such as the experimental operator;

[0022] If a calorimetric experiment is conducted, the ignition experiment parameters are modified in the calorimetric module (9). After the calorimetric module (9) issues an ignition command, the intelligent module (2) controls the relay of the circuit board according to the command to control the ignition action; the display module (7) displays the experimental parameters in the calibration experiment in real time; after the experiment is completed, the data is read in the calorimetric module (9); at the same time, the data output module of the host computer (1) outputs the sample name of a single experiment and the information such as the experimental operator, and then the experimental data is read in the calorimetric module;

[0023] Finally, the experimental data of the calorimetric experiment or calibration experiment is stored, and the historical data can be queried in the query module (12) of the host computer (1) according to the experimental time and experimental name displayed in LabVIEW.

[0024] Preferably, there are multiple types of signals, and the range of each signal can be adjusted independently. The display interface displays multiple signals simultaneously, and they can be adjusted to appropriate size graphics as needed.

[0025] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0026] The LabVIEW-based combustion heat measurement system and method described in the present invention integrate LabVIEW technology, intelligent modules and a new combustion heat measuring instrument, realize the operation control, data visualization, and data processing and storage of the new combustion heat measuring instrument, and is easy to operate and has a simple interface, making the combustion heat measurement experiment more convenient, which will make a positive contribution to the field of combustion heat measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the combustion heat measurement system based on LabVIEW of the present invention; wherein, 1-host computer, 2-intelligent module, 3-combustion heat measurement module, 4-combustion heat measurement instrument, 5-temperature sensor, 6-potential sensor;

[0028] Figure 2 The interface diagram of the host computer 1 in the combustion heat measurement system based on LabVIEW of the present invention; wherein 7-signal display module, 8-calibration module, 9-calorimetric module, 10-data output module, 11-baseline setting module, 12-query module;

[0029] Figure 3 It is a schematic diagram of the execution flow of the combustion heat measurement system based on LabVIEW of the present invention. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0031] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is not intended to limit the present application, its application, or uses.

[0033] Technologies, systems, and devices known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, systems, and devices should be considered part of the specification.

[0034] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] Combine the following Figure 1 to Figure 3 To describe the combustion heat measurement system and method based on LabVIEW according to the exemplary embodiment of the present application. It should be noted that the following application scenarios are only shown to facilitate understanding of the spirit and principle of the present application, and the embodiments of the present application are not limited in this respect. On the contrary, the embodiments of the present application can be applied to any applicable scenario.

[0037] The present invention provides a combustion heat measurement system and method based on LabVIEW, such as Figure 1 As shown, it is composed of a host computer 1, an intelligent module 2 and a combustion heat determination module 3;

[0038] The combustion heat measuring module comprises a combustion heat measuring instrument 4 , a temperature sensor 5 , and a potential sensor 6 .

[0039] and Figure 1 The temperature sensor 5 shown in is a platinum thermal resistor;

[0040] The intelligent module 2 includes a data acquisition processor and a circuit board with multiple signal measurement and control functions. The data acquisition processor is based on an ARM processor and FPGA technology, and is embedded with a real-time embedded operating system Linux or wince. The circuit board is composed of resistors, capacitors, relays and timers.

[0041] The data acquisition processor is a data acquisition product with multiple functions and multiple signal measurement and control. Preferably, the model of the data acquisition processor is ZTIC / EM9104c;

[0042] The host computer 1 is a graphical interface based on LabVIEW, including a signal display module 7, a calibration module 8, a calorimetric module 9, a data output module 10, a baseline setting module 11 and a query module 12;

[0043] The calibration module 8, calorimetric module 9 and intelligent module 2 all use RS232 asynchronous serial communication. After receiving the instructions from the host computer 1, the intelligent module 2 controls the relay of the circuit board to perform different actions according to different instructions, thereby realizing the control of the calibration or ignition action of the combustion calorimeter.

[0044] In the present invention, the combustion heat measuring instrument comprises a constant temperature water cabinet, a thermopile, an oxygen bomb and a stirring system.

[0045] Furthermore, the present invention is combined with Figure 2 The internal structure of the host computer 1 is described as follows:

[0046] The host computer 1 is a graphical interface based on LabVIEW, including a signal display module 7, a calibration module 8, a calorimetric module 9, a data output module 10, a baseline setting module 11 and a query module 12;

[0047] The calibration module 8, calorimetric module 9 and intelligent module 2 all use RS232 asynchronous serial communication. After receiving the instructions from the host computer 1, the intelligent module 2 controls the relay of the circuit board to perform different actions according to different instructions, thereby realizing the control of the calibration or ignition action of the combustion calorimeter.

[0048] In the present invention, the display module 7 of the host computer 1 can display the thermoelectric potential, temperature, calibration current, calibration voltage and ignition voltage in real time during the experiment.

[0049] In the present invention, the calibration module 8 of the host computer 1 is responsible for issuing calibration-related instructions and can modify the experimental parameters in the calibration experiment.

[0050] In the present invention, the calibration is divided into two modes: electrical calibration and chemical calibration. The calibration module 8 of the host computer 1 is responsible for issuing relevant instructions for electrical calibration or chemical calibration.

[0051] In the present invention, the calorimetric module 9 of the host computer 1 is responsible for issuing ignition instructions, modifying ignition experiment parameters and recording experimental data during the experiment.

[0052] In the present invention, the data output module 10 of the host computer 1 outputs the sample name and experimental operator information of a single experiment.

[0053] In the present invention, the baseline setting module 11 of the host computer 1 performs a zeroing operation on the baseline.

[0054] In the present invention, the query module 12 of the host computer 1 calls out and queries the locally stored data.

[0055] In the present invention, the combustion heat measuring instrument 4 is a new type of combustion heat measuring instrument based on a thermoelectric sensing system; the potential sensor 6 is a three-dimensional thermoelectric sensor composed of 100 to 1000 thermocouples; further, the potential sensor 6 is a three-dimensional thermoelectric sensor composed of 500 to 1000 thermocouples; further, the potential sensor 6 is a three-dimensional thermoelectric sensor composed of 500 to 800 thermocouples.

[0056] In the present invention, the temperature sensor is Pt100 or Pt1000.

[0057] Furthermore, the present invention combines Figure 3 , an exemplary and specific step description of the combustion heat measurement system based on LabVIEW is given below:

[0058] First, turn on the combustion heat measuring instrument and computer of the intelligent module 2, click to open the software, and enter the main interface of the software;

[0059] After reaching the main interface, first adjust the display module 7 of the host computer 1, select each signal to be displayed by checking whether to check it, and enlarge or reduce the signal curve by adjusting the signal range as needed; at the same time, the range of each signal can be adjusted independently, even if the display interface displays multiple signals at the same time, they can be adjusted to the appropriate size according to needs;

[0060] In one method, a calibration experiment is performed, and chemical calibration or electrical calibration is selected in the calibration module 8, and the parameters in the calibration experiment are adjusted according to the sample of a single calibration experiment, so that the output experimental data is more accurate;

[0061] After the chemical calibration or electrical calibration instruction is issued by the calibration module 8, the intelligent module 2 controls the relay of the circuit board according to the instruction to control the calibration action; the intelligent module 2 and the calibration module 8 are connected through the RS232 asynchronous serial communication mode, and the data processor of the intelligent module 2 transmits the signal generated by the combustion heat determination module 3 to the host computer 1 after collecting it, so that the display module 7 can display the experimental parameters in the calibration experiment in real time; after the experiment is completed, the calibration module 8 reads the data; at the same time, the host computer 1 data output module outputs the sample name and experimental operator of a single experiment and other information. In addition, before the calibration experiment, the baseline can be zeroed through the baseline setting module of the host computer 1 to reduce the error of the experiment and improve the precision and accuracy of the measurement; the background noise of the instrument may interfere with the measurement results, and the zeroing operation can identify and reduce such interference and thus improve the signal-to-noise ratio of the measurement; at the same time, the zeroing operation can also promptly discover and solve the problems existing in the instrument, avoid the expansion of the problem and cause greater damage to the equipment, and maintain the equipment in a good state.

[0062] In another way, a calorimetric experiment is conducted, and at the same time, the ignition experiment parameters are modified and the ignition action is controlled in the calorimetric module 9. The ignition action instruction is issued by the calorimetric module 9, and the intelligent module 2 controls the relay of the circuit board according to the instruction. The intelligent module 2 and the calorimetric module 8 are connected through RS232 asynchronous serial communication. After the data processor of the intelligent module 2 collects the signal generated by the combustion heat determination module 3, it transmits it to the host computer 1, so that the display module 7 displays the experimental parameters in the ignition experiment in real time; after the experiment is completed, the data is read in the calorimetric module 8; at the same time, the data output module of the host computer 1 outputs the sample name of the single experiment and the experimental operator and other information. Similar to the above, the above-mentioned zeroing operation can also be performed in the ignition experiment.

[0063] Finally, the experimental data is stored, and the historical data of the historical experiments can be queried in the query module 12 of the host computer 1 according to the experimental time and experimental name displayed in LabVIEW.

[0064] The present invention also provides a method for measuring combustion heat based on LabVIEW according to the above technical solution, comprising the following steps: turning on the combustion heat measuring instrument and the computer of the intelligent module 2, clicking to open the software, and entering the main interface of the software; after reaching the main interface, firstly adjusting the display module 7 of the host computer 1, selecting and displaying each signal by selecting whether to check or not, and zooming in or out the signal curve by adjusting the signal range as needed;

[0065] If a calibration experiment is to be conducted, the calibration module 8 selects chemical calibration or electrical calibration, and adjusts the parameters in the calibration experiment according to the sample of a single experiment, so that the output experimental data is more accurate; after the calibration module 8 issues a chemical calibration or electrical calibration instruction, the intelligent module 2 controls the relay of the circuit board according to the instruction to control the calibration action; the display module 7 will display the experimental parameters in the calibration experiment in real time; after the experiment is completed, the calibration module 8 reads the data; at the same time, the data output module of the host computer 1 outputs the sample name of the single experiment and the experimental operator and other information;

[0066] If a calorimetric experiment is conducted, the ignition experiment parameters are modified in the calorimetric module 9. After the calorimetric module 9 issues an ignition command, the intelligent module 2 controls the relay of the circuit board according to the command to control the ignition action; the display module 7 will display the experimental parameters in the calibration experiment in real time; after the experiment is completed, the data is read in the calorimetric module 9; at the same time, the data output module of the host computer 1 outputs the sample name of a single experiment and the experimental operator and other information, and then the experimental data is read in the calorimetric module;

[0067] Finally, the experimental data of the calorimetric experiment or calibration experiment is stored, and the historical data can be queried in the query module 12 of the host computer 1 according to the experimental time and experimental name displayed in LabVIEW.

[0068] Finally, it should be noted that:

[0069] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known structures and technologies are not shown in detail so as not to obscure the understanding of this description.

[0070] Similarly, it should be understood that in order to streamline the present application and aid in understanding one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed system should not be interpreted as reflecting the following schematic diagram: the claimed application requires more features than those explicitly recited in each claim.

[0071] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present application and to form different embodiments.

[0072] For example, in the above claims, any of the claimed embodiments can be used in any combination.

[0073] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present application without departing from the principle of the present invention should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A combustion heat measurement system based on LabVIEW, characterized in that: It is composed of a host computer (1), an intelligent module (2) and a combustion heat measurement module (3); The combustion heat measurement module (3) is composed of a combustion heat measurement instrument (4), a temperature sensor (5) and a potential sensor (6); The temperature sensor (5) is a platinum thermal resistor; The intelligent module (2) comprises a data acquisition processor and a circuit board capable of measuring and controlling multiple signals, wherein the data acquisition processor is based on an ARM processor and FPGA technology and has an embedded real-time embedded operating system Linux or WinCE, and the circuit board is composed of a resistor, a capacitor, a relay and a timer; The model of the data acquisition processor is ZTIC / EM9104c; The host computer (1) is a graphical interface based on LabVIEW, comprising a signal display module (7), a calibration module (8), a calorimetric module (9), a data output module (10), a baseline setting module (11) and a query module (12); The calibration module (8), the calorimetric module (9) and the intelligent module (2) all use an RS232 asynchronous serial port communication method. After receiving the instructions sent by the host computer (1), the intelligent module (2) controls the relay of the circuit board to perform different actions according to different instructions, thereby realizing the control of the calibration or ignition action of the combustion calorimeter.

2. A LabVIEW-based combustion heat measurement system according to claim 1, characterized in that: The display module (7) of the host computer (1) can display the thermoelectric potential, temperature, calibration current, calibration voltage and ignition voltage in real time during the experiment; the calibration module (8) of the host computer (1) is responsible for issuing relevant calibration instructions and can modify the experimental parameters in the calibration experiment.

3. A LabVIEW-based combustion heat measurement system according to claim 2, characterized in that: The calibration can be divided into two modes: electrical calibration and chemical calibration. The calibration module (8) of the host computer (1) is responsible for issuing relevant instructions for electrical calibration or chemical calibration.

4. The LabVIEW-based combustion heat measurement system according to claim 1, characterized in that: The calorimetric module (9) of the host computer (1) is responsible for issuing ignition instructions, modifying ignition experiment parameters and recording experimental data during the experiment; the data output module (10) of the host computer (1) outputs the sample name and experimental operator information of a single experiment.

5. The LabVIEW-based combustion heat measurement system according to claim 1, characterized in that: The baseline setting module (11) of the host computer (1) performs a zeroing operation on the baseline; and the query module (12) of the host computer (1) calls out and queries the locally stored data.

6. The LabVIEW-based combustion heat measurement system according to claim 1, characterized in that: The combustion heat measuring instrument (4) is a new type of combustion heat measuring instrument based on a thermoelectric sensor system; the potential sensor (6) is a three-dimensional thermoelectric sensor composed of 100 to 1000 thermocouples.

7. The LabVIEW-based combustion heat measurement system according to claim 1, characterized in that: The temperature sensor is Pt100 or Pt1000.

8. A method for measuring combustion heat based on LabVIEW according to any one of claims 1 to 7, characterized in that: The combustion heat measurement system according to claim 1 comprises the following steps: turning on the combustion heat measuring instrument and the computer of the intelligent module (2), clicking to open the software, and entering the main interface of the software; after reaching the main interface, firstly adjusting the display module (7) of the host computer (1), selecting and displaying each signal by selecting whether to check or not, and zooming in or out the signal curve by adjusting the signal range as needed; If a calibration experiment is to be conducted, the calibration module (8) selects chemical calibration or electrical calibration, and adjusts the parameters in the calibration experiment according to the sample of the single experiment, so that the experimental data outputted by the calibration module (8) is more accurate; after the calibration module (8) issues a chemical calibration or electrical calibration instruction, the intelligent module (2) controls the relay of the circuit board according to the instruction to control the calibration action; the display module (7) displays the experimental parameters in the calibration experiment in real time; after the experiment is completed, the calibration module (8) reads the data; at the same time, the data output module of the host computer (1) outputs the sample name of the single experiment and the information such as the experimental operator; If a calorimetric experiment is conducted, the ignition experiment parameters are modified in the calorimetric module (9). After the calorimetric module (9) issues an ignition command, the intelligent module (2) controls the relay of the circuit board according to the command to control the ignition action; the display module (7) displays the experimental parameters in the calibration experiment in real time; after the experiment is completed, the data is read in the calorimetric module (9); at the same time, the data output module of the host computer (1) outputs the sample name of a single experiment and the information such as the experimental operator, and then the experimental data is read in the calorimetric module; Finally, the experimental data of the calorimetric experiment or calibration experiment is stored, and the historical data can be queried in the query module (12) of the host computer (1) according to the experimental time and experimental name displayed in LabVIEW.

9. The method for measuring combustion heat based on LabVIEW according to claim 8, characterized in that: There are multiple types of signals, and the range of each signal can be adjusted independently. The display interface displays multiple signals simultaneously, and they can be adjusted to appropriate size graphics according to needs.

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