Arc wind tunnel temperature measurement and conditioning module calibration connection device and method

Abstract

The present invention discloses a calibration connection device and method for an arc wind tunnel temperature measurement and conditioning module, the device comprising: a box, the box interior comprising a common wiring module and a power module, the front side of the box being equipped with an indicator light, a channel dial selection module, a quick wiring module, a signal output module and a signal input module; a multi-core cable module being installed on the left side of the box; the signal input module being used to receive a first voltage value; the channel dial selection module being used to switch a specific channel of the arc wind tunnel temperature measurement and conditioning module; the multi-core cable module being used to receive a second voltage value converted by the arc wind tunnel temperature measurement and conditioning module based on the first voltage value; and the signal output module being used to receive and output the second voltage value. The present invention controls the submodules connected to the arc wind tunnel temperature measurement and conditioning module through the channel dial selection module, and completes the calibration of all submodules of the arc wind tunnel temperature measurement and conditioning module through a single cable connection.

Description

Technical Field

[0001] The invention relates to the technical field of high temperature test equipment for aircraft materials, and in particular to a calibration connection device and method for a temperature measurement and conditioning module of an arc wind tunnel. Background Art

[0002] The arc wind tunnel is an effective and indispensable core experimental equipment for completing the design of thermal protection structural materials for hypersonic aircraft. It can simulate the aerodynamic heating environment of various types of hypersonic aircraft within a certain range and conduct aerodynamic thermal ground simulation tests on experimental models.

[0003] When conducting aerodynamic thermal simulation tests on models in arc wind tunnels, in order to further understand the heat protection and other characteristics of the material, it is necessary to monitor the temperature of the model in real time and accurately measure it, and obtain accurate temperature data through the temperature test acquisition system. The accuracy of the temperature measurement and conditioning module is the key to determining the normal operation of the entire temperature test system and whether the measurement value is accurate. Therefore, the calibration of the temperature measurement and conditioning module is of great significance to the acquisition of temperature and heat flow data for the entire experiment.

[0004] In arc wind tunnel experiments, the measurement of temperature and heat flow is crucial, but the temperature measurement and conditioning modules currently used often have zero point and accuracy inaccuracies in some temperature measurement and conditioning modules during long-term use, which will affect the reliability of experimental data during the experiment. Modules with inaccurate zero points can only be abandoned, which is also a waste of resources to a certain extent. Summary of the invention

[0005] The object of the present invention is to provide a calibration connection device and method for an arc wind tunnel temperature measurement and conditioning module, aiming to solve the above-mentioned problems in the prior art.

[0006] The present invention provides an arc wind tunnel temperature measurement and conditioning module calibration connection device, comprising: a box body, the box body includes a common wiring module and a power supply module, the front side of the box body is equipped with an indicator light, a channel dial selection module, a quick wiring module, a signal output module and a signal input module; the left side of the box body is equipped with a multi-core cable module;

[0007] The power supply module is used to provide electric energy for the calibration connection device of the arc wind tunnel temperature measurement and conditioning module;

[0008] The common wiring module is used for grounding to ensure the safety of the calibration connection device of the arc wind tunnel temperature measurement and conditioning module;

[0009] A quick wiring module is connected to the arc wind tunnel temperature measurement and conditioning module through a signal transmission line, and is used to establish a connection with the arc wind tunnel temperature measurement and conditioning module;

[0010] A signal input module, connected to the standard signal source, for receiving a first voltage value provided by the standard signal source, and transmitting the first voltage value to the channel dial selection module;

[0011] A channel dial selection module is connected to the signal input module and the quick wiring module, and is used to control the switching of a specific channel of the arc wind tunnel temperature measurement and conditioning module, and transmit the first voltage value to the specific channel;

[0012] The indicator light is connected to the channel dial selection module and is used to display the specific channel of the arc wind tunnel temperature measurement and conditioning module being calibrated;

[0013] The multi-core cable module is connected to the arc wind tunnel temperature measurement and conditioning module, and is used to receive the second voltage value output by the arc wind tunnel temperature measurement and conditioning module based on the first voltage value, and transmit the second voltage value to the signal output module;

[0014] The signal output module is connected to the multi-core cable module and is used for receiving the second voltage value and outputting the second voltage value.

[0015] The present invention provides a calibration connection method for an arc wind tunnel temperature measurement and conditioning module, comprising:

[0016] The specific channel of the arc wind tunnel temperature measurement and conditioning module is switched through the channel dial selection module;

[0017] A first voltage value is received through a signal input module, and the first voltage value is transmitted to a specific channel of an arc wind tunnel temperature measurement and conditioning module through a channel dial selection module;

[0018] The first voltage value is passed through the arc wind tunnel temperature measurement and conditioning module to obtain a second voltage value, and the second voltage value is output through the multi-core cable module;

[0019] The arc wind tunnel temperature measurement and conditioning module is calibrated according to the first voltage value and the second voltage value.

[0020] According to the embodiment of the present invention, a voltage signal of a given range is input through a signal input module. After the voltage signal passes through a temperature measurement and conditioning module, it is converted and output by a multi-core signal line. The difference between the reference input voltage signal value and the output voltage signal value is compared to adjust the zero point and full-scale potentiometers of the temperature measurement and conditioning module to ensure the measurement accuracy of the temperature measurement and conditioning module. A channel dial selection module is used to switch channels, which solves the tedious steps of repeatedly connecting the signal line to the corresponding channel of each module during the calibration process. The use process is time-saving, labor-saving and easy to operate. The device of the present invention has a simple structure and the calibration process is easy to implement. It solves the problem that in the temperature measurement of the arc wind tunnel experiment, the accuracy of the temperature measurement and conditioning module used can be calibrated and adjusted at any time, so as to maintain the measurement linearity and accuracy of the temperature measurement and conditioning module, effectively ensure the accuracy of the temperature data of the arc wind tunnel experiment, and thus improve the quality of the experimental data.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 Schematic diagram of a calibration connection device for an arc wind tunnel temperature measurement and conditioning module according to an embodiment of the present invention;

[0024] Figure 2 It is a flow chart of a calibration connection method for an arc wind tunnel temperature measurement and conditioning module according to an embodiment of the present invention;

[0025] Figure 3 It is a circuit schematic diagram of a calibration connection device for an arc wind tunnel temperature measurement and conditioning module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Device Embodiment

[0030] According to an embodiment of the present invention, a calibration connection device for a temperature measurement and conditioning module of an arc wind tunnel is provided. Figure 1 Schematic diagram of a calibration connection device for an arc wind tunnel temperature measurement and conditioning module according to an embodiment of the present invention. Figure 1 As shown, the arc wind tunnel temperature measurement and conditioning module calibration connection device according to the embodiment of the present invention specifically comprises: a box body, the inside of the box body comprises a common wiring module 1 and a power supply module 2, the front side of the box body is equipped with an indicator light 3, a channel dial selection module 4, a quick wiring module 5, a signal output module 6 and a signal input module 8; the left side of the box body is equipped with a multi-core cable module 7;

[0031] The power module 2 is used to provide power to the calibration connection device of the arc wind tunnel temperature measurement and conditioning module;

[0032] The common wiring module 1 is used for grounding to ensure the safety of the calibration connection device of the arc wind tunnel temperature measurement and conditioning module;

[0033] The quick wiring module 5 is connected to the arc wind tunnel temperature measurement and conditioning module through a signal transmission line, and is used to establish a connection with the arc wind tunnel temperature measurement and conditioning module. The connection port of the quick wiring module 5 is preferably a spring quick wiring port;

[0034] The signal input module 8 is connected to the standard signal source, and is used to receive the first voltage value provided by the standard signal source, and transmit the first voltage value to the channel dial selection module 4, wherein the first voltage value is: -50mV, -25mV, 0mV, 25mV, 50mV;

[0035] The channel dial selection module 4 is connected to the signal input module and the quick wiring module 5, and is used to control the switching of a specific channel of the arc wind tunnel temperature measurement and conditioning module, and transmit the first voltage value to the specific channel. The channel dial selection module 4 is further used to control the switching of the input / output signals corresponding to each submodule in the arc wind tunnel temperature measurement and conditioning module, and complete the calibration of all submodules of the arc wind tunnel temperature measurement and conditioning module through a single cable connection;

[0036] Indicator light 3 is connected to channel dial selection module 4, and displays the specific channel of the arc wind tunnel temperature measurement and conditioning module being calibrated by lighting the indicator light of the corresponding channel;

[0037] The multi-core cable module 7 is connected to the arc wind tunnel temperature measurement and conditioning module, and is used to receive the second voltage value output by the arc wind tunnel temperature measurement and conditioning module based on the conversion of the first voltage value, and transmit the second voltage value to the signal output module 6, wherein the conversion plug of the multi-core cable module 7 has a specific number of cores determined by the number of calibrated modules / channels.

[0038] The signal output module 6 is connected to the multi-core cable module 7, and is used to receive the second voltage value, and measure and output the second voltage value through a high-precision digital display, and compare the first voltage value with the second voltage value. If the first voltage value is equal to the second voltage value, the arc wind tunnel temperature measurement and conditioning module measures normally. Otherwise, the first voltage value of different values ​​is input through the signal input end and the zero point and full scale potentiometer of the arc wind tunnel temperature measurement and conditioning module are adjusted until the first voltage value is equal to the second voltage value.

[0039] The arc wind tunnel temperature measurement and conditioning module calibration connection device is used to input a voltage signal of a given range through the signal input terminal. After the voltage signal passes through the arc wind tunnel temperature measurement and conditioning module, it is converted and output by the multi-core cable module. The difference between the reference input voltage signal value and the output voltage signal value is compared to adjust the zero point and full-scale potentiometer of the temperature measurement and conditioning module to ensure the measurement accuracy of the temperature measurement and conditioning module.

[0040] Figure 3 This is the circuit schematic diagram of the calibration connection device for the arc wind tunnel temperature measurement and conditioning module. Figure 3It can be seen that the module that needs to be calibrated is connected to the quick wiring module of the device through a signal transmission line, and the positive and negative poles of the quick wiring module are connected to the channel dial selection module switch, and the channel dial selection module switch is connected to the signal input module. The reference voltage signal is given by the standard signal source, and the reference voltage signal is input from the standard signal input end of the device. The specific channel of the calibrated temperature measurement module is switched and controlled by the channel dial selection switch, and the channel indicator light displays the corresponding channel being calibrated. After the reference voltage signal passes through the arc wind tunnel temperature measurement and conditioning module, it is connected to the cable module of the device by a signal transmission line. The output voltage value of the signal output module is measured by a high-precision digital display, and then compared with the given reference voltage value. If the output voltage value is consistent with the reference input voltage value, the calibrated temperature measurement module is measured normally; if the output voltage value is inconsistent with the reference input voltage value, the zero point and full scale potentiometer of the temperature measurement and conditioning module are adjusted to make the output voltage value consistent with the input reference voltage value, so as to ensure the accuracy of the zero point and linearity of the temperature measurement and conditioning module.

[0041] The following beneficial effects are achieved by adopting the embodiments of the present invention:

[0042] 1. Realize the timely adjustment of the temperature measurement and conditioning module with zero point and accuracy inaccuracy, and improve the utilization rate of the temperature conditioning module in the experiment;

[0043] 2. The device has a simple structure, is lightweight, and the standard inspection process is easy to implement;

[0044] 3. The channel dial selector switch is used for channel switching, which solves the tedious steps of repeatedly connecting the signal line of each module corresponding channel during the calibration process. The use process saves time and effort and is easy to operate.

[0045] According to an embodiment of the present invention, a calibration connection method for an arc wind tunnel temperature measurement and conditioning module is provided. Figure 2 FIG. 1 is a flow chart of a calibration connection method for an arc wind tunnel temperature measurement and conditioning module according to an embodiment of the present invention. Figure 2 As shown, the calibration connection method of the arc wind tunnel temperature measurement and conditioning module according to an embodiment of the present invention specifically includes:

[0046] Step S201, controlling the switching of a specific channel of the arc wind tunnel temperature measurement and conditioning module through a channel dial selection module;

[0047] Step S202, receiving a first voltage value through the signal input module, and transmitting the first voltage value to a specific channel of the arc wind tunnel temperature measurement and conditioning module through the channel dial selection module, wherein the first voltage value is: -50mV, -25mV, 0mV, 25mV, 50mV in sequence;

[0048] Step S203, the first voltage value is passed through the arc wind tunnel temperature measurement and conditioning module to obtain a second voltage value, and the second voltage value is output through the multi-core cable module;

[0049] Step S204, calibrating the arc wind tunnel temperature measurement and conditioning module according to the first voltage value and the second voltage value, step S204 specifically includes: obtaining a first comparison value according to the first voltage value and the second voltage value, if the first comparison value meets a specific comparison threshold, the arc wind tunnel temperature measurement and conditioning module measures normally, otherwise, inputting first voltage values ​​of different values ​​through the signal input end and adjusting the zero point and full scale potentiometers of the arc wind tunnel temperature measurement and conditioning module until the first comparison value meets the specific comparison threshold.

[0050] The above description is only an embodiment of this document and is not intended to limit this document. For those skilled in the art, this document may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this document should be included in the scope of the claims of this document.

Claims

1. A calibration connection device for arc wind tunnel temperature measurement and conditioning module, characterized in that: Connected with the arc wind tunnel temperature measurement and conditioning module, the device specifically includes: a box, the inside of which includes a common wiring module and a power supply module, and the front side of the box is equipped with an indicator light, a channel dial selection module, a quick wiring module, a signal output module and a signal input module; the left side of the box is equipped with a multi-core cable module; The power supply module is used to provide power to the calibration connection device of the arc wind tunnel temperature measurement and conditioning module; The common wiring module is used for grounding to ensure the safety of the calibration connection device of the arc wind tunnel temperature measurement and conditioning module; The quick wiring module is connected to the arc wind tunnel temperature measurement and conditioning module through a signal transmission line, and is used to establish a connection with the arc wind tunnel temperature measurement and conditioning module; The signal input module is connected to the standard signal source, and is used to receive a first voltage value provided by the standard signal source, and transmit the first voltage value to the channel dial selection module; The channel dial selection module is connected to the signal input module and the quick wiring module, and is used to control the switching of a specific channel of the arc wind tunnel temperature measurement and conditioning module, and transmit the first voltage value to the specific channel; The indicator light is connected to the channel dial selection module and is used to display the specific channel of the arc wind tunnel temperature measurement and conditioning module being calibrated; The multi-core cable module is connected to the arc wind tunnel temperature measurement and conditioning module, and is used to receive a second voltage value output by the arc wind tunnel temperature measurement and conditioning module based on the first voltage value, and transmit the second voltage value to the signal output module; The signal output module is connected to the multi-core cable module and is used to receive the second voltage value and output the second voltage value; The signal input module is specifically used to: input first voltage values ​​of different values, wherein the first voltage values ​​are: -50mV, -25mV, 0mV, 25mV, 50mV; The signal output module includes: a digital display meter, which is used to measure the specific value of the second voltage value.

2. The device according to claim 1, characterized in that The channel dial selection module is further used for: Control and switch the input / output signals corresponding to the submodules in the arc wind tunnel temperature measurement and conditioning module, and complete the calibration of all the submodules of the arc wind tunnel temperature measurement and conditioning module through a single cable connection.

3. The device according to claim 1, characterized in that The quick wiring module adopts a spring quick wiring port.

4. The device according to claim 1, characterized in that The indicator light serves as a prompt that the channel dial selector switch is switched to a specific channel by lighting up the corresponding channel indicator light.

5. The device according to claim 1, characterized in that The signal output module is specifically used for: A second voltage value is received and outputted. If the first voltage value is equal to the second voltage value, the arc wind tunnel temperature measurement and conditioning module measures normally. Otherwise, a first voltage value with a different value is input through the signal input end and the zero point and full scale potentiometer of the arc wind tunnel temperature measurement and conditioning module are adjusted until the first voltage value is equal to the second voltage value.

6. A calibration connection method for arc wind tunnel temperature measurement and conditioning module, characterized in that: The arc wind tunnel temperature measurement and conditioning module calibration connection device used in any one of claims 1 to 5 is characterized by comprising: The specific channel of the arc wind tunnel temperature measurement and conditioning module is switched through the channel dial selection module; A first voltage value is received through a signal input module, and the first voltage value is transmitted to a specific channel of an arc wind tunnel temperature measurement and conditioning module through the channel dial selection module; The first voltage value is passed through an arc wind tunnel temperature measurement and conditioning module to obtain a second voltage value, and the second voltage value is output through a multi-core cable module; The arc wind tunnel temperature measurement and conditioning module is calibrated according to the first voltage value and the second voltage value.

7. The method according to claim 6, characterized in that: The step of calibrating the zero point and full scale potentiometers of the arc wind tunnel temperature measurement and conditioning module by comparing the first voltage value and the second voltage value specifically includes: The first voltage value is compared with the second voltage value. If the first voltage value is equal to the second voltage value, the arc wind tunnel temperature measurement and conditioning module measures normally. Otherwise, first voltage values ​​of different values ​​are input through the signal input end and the zero point and full scale potentiometers of the arc wind tunnel temperature measurement and conditioning module are adjusted until the first voltage value is equal to the second voltage value.

8. The method according to claim 6, characterized in that: The first voltage value of different values ​​inputted through the signal input terminal specifically includes: The first voltage values ​​are: -50mV, -25mV, 0mV, 25mV, 50mV in sequence.

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