Analog signal line detection device for solid engine ground test

Abstract

The utility model provides an analog signal line detection device for a solid engine ground test. The analog signal line detection device comprises a test box body, a first cover body and a second cover body, two ends of the test box body are opened, an analog signal plate is arranged in the test box body, an indicator light switch is arranged on the box body wall, and the analog signal plate is electrically connected with the indicator light switch; the first cover body sleeves one end of the test box body, the first cover body is provided with a charging interface, the input end of the charging interface is connected with an external power supply, and the output end of the charging interface is electrically connected with the analog signal board and the indicator light switch; the second cover body sleeves the other end of the test box body, a circuit test interface is arranged on the second cover body, the test end of the circuit test interface is used for being connected with a to-be-tested circuit, and the connection end of the circuit test interface is electrically connected with the analog signal board. According to the invention, whether the signal transmission of the to-be-tested line in the ground test is normal can be rapidly and conveniently judged.

Description

Technical Field

[0001] This application relates to the technical field of analog signal line detection, and particularly to an analog signal line detection device for solid rocket motor ground tests. Background Art

[0002] Due to the technical characteristics of long storage, fast response, and high reliability, solid rocket motors have become the preferred power devices for actual operations such as launch vehicle launches and target missiles.

[0003] During the solid rocket motor ground test, temperature sensors and strain sensors need to be installed at the parts to be tested for thermal structure assessment according to the overall requirements to obtain the margins of the corresponding structures and thermal structures, thereby ensuring the reliability of the solid rocket motor operation. Taking the temperature sensor as an example, in a conventional solid rocket motor ground test, generally 20 - 30 temperature sensors need to be pasted, and 20 - 30 data lines need to be connected between the test bench and the measurement and control center. How to ensure the effectiveness of each test line before the test is a key link to obtain test data.

[0004] The traditional method for detecting test lines is to use an analog signal generator, which uses a DC power supply to simulate a thermistor sensor. This method has problems such as low efficiency, insufficiently wide output, and the need to replace the power supply.

[0005] Therefore, it is necessary to propose a solution to improve one or more problems existing in the above - mentioned related technical solutions.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of this application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0007] An embodiment of this application provides an analog signal line detection device for solid rocket motor ground tests, including:

[0008] A test box body, the test box body has an open - ended structure at both ends, an analog signal board is arranged inside the test box body, an indicator switch is arranged on the box wall of the test box body, and the analog signal board is electrically connected to the indicator switch;

[0009] A first cover body, the first cover body is sleeved at one end of the test box body, a charging interface is arranged on the first cover body, the input end of the charging interface is connected to an external power supply, the first port of the output end of the charging interface is electrically connected to the analog signal board, and the second port of the output end of the charging interface is electrically connected to the indicator switch;

[0010] A second cover body, the second cover body is sleeved on the other end of the test box body, a circuit test interface is arranged on the second cover body, a test end of the circuit test interface is used for connecting with a circuit to be tested, and a first port and a second port of a connection end of the circuit test interface are respectively electrically connected with the analog signal board.

[0011] In an exemplary embodiment of the present application, a storage battery is arranged in the test box body, and the storage battery is electrically connected with the analog signal board.

[0012] In an exemplary embodiment of the present application, the storage battery is clamped between the inner walls of the test box body through a plurality of limiting members.

[0013] In an exemplary embodiment of the present application, the limiting member is fixed foam.

[0014] In an exemplary embodiment of the present application, the storage battery is a lithium battery.

[0015] In an exemplary embodiment of the present application, the analog signal board controls the range of the power supply voltage of the lithium battery to be 0-60 mv.

[0016] In an exemplary embodiment of the present application, for the test box body 110, the first cover body and the second cover body are both made of PVC material.

[0017] In an exemplary embodiment of the present application, the indicator light switch includes:

[0018] A housing, the housing is clamped on the box body wall of the test box body;

[0019] An indicator light button, the indicator light button is arranged at the upper end of the housing and exposes the box body wall of the test box body;

[0020] A circuit connection interface, the circuit connection interface is arranged at the lower end of the housing, and the circuit connection interface is respectively electrically connected with the charging interface and the analog signal board;

[0021] Wherein, a circuit processing and conversion unit is arranged in the housing, and the circuit processing and conversion unit is respectively connected with the circuit connection interface and the indicator light button.

[0022] In an exemplary embodiment of the present application, a plurality of test connectors are arranged at the port of the test end of the circuit test interface, and a fixing member 133 is arranged on the outer periphery of the port of the test end;

[0023] The fixing member is provided with a central hole, and a plurality of the test connectors respectively pass through the central hole to be connected with the circuit to be tested.

[0024] Beneficial effects:

[0025] This application provides a simulation signal line detection device for solid rocket motor ground tests, which has at least the following beneficial effects:

[0026] (1) By setting a test box body, a first cover body and a second cover body; a simulation signal board is arranged inside the test box body, a charging interface is arranged on the first cover body, and a line test interface is arranged on the second cover body, this application solves the problem that before the solid rocket motor ground test, it is necessary to respectively connect a variety of simulation signal generators to each line to be tested and then detect whether each line is in a normal working state, and the detection process is cumbersome and inconvenient. The simulation signal line detection device proposed in this application has a compact structure and a light weight, and can quickly and conveniently judge whether the signal transmission of multiple lines to be tested in the solid rocket motor ground test is normal;

[0027] (2) By adopting a lithium battery, the power supply capacity of this simulation signal line detection device is large and rechargeable, which solves the problems of the small capacity of No. 5 batteries, troublesome replacement and high cost in the prior art, and there is no need to worry about power interruption in the middle, improving the working efficiency of this simulation signal line detection device;

[0028] (3) The test box body, the first cover body and the second cover body of this application are all made of PVC material, with low cost, light weight and good sealing performance, and can achieve the functions of waterproof, rust-proof, dust-proof and moisture-proof;

[0029] (4) By setting an indicator light switch, which is operated by pressing, and can timely judge the working state of the line to be tested, the detection efficiency during the solid rocket motor ground test is greatly improved;

[0030] (5) By controlling the range of the power supply voltage of the lithium battery through the simulation signal board, the voltage output range is increased, thereby improving the anti-interference ability of the simulation signal and realizing the detection function for a variety of lines to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Obviously, the drawings in the following description are only some embodiments of this application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0032] Figure 1 Shows the structural schematic diagram of the simulation signal line detection device when it is not assembled in the exemplary embodiment of this application;

[0033] Figure 2Shows the structural schematic diagram of the assembled analog signal line detection device in an exemplary embodiment of the present application.

[0034] In the figure, 100 is the analog signal line detection device; 110 is the test box body; 120 is the first cover body; 121 is the charging interface; 130 is the second cover body; 131 is the line test interface; 132 is the test joint; 133 is the fixing member; 140 is the analog signal board; 150 is the indicator light switch; 151 is the housing; 152 is the indicator light button; 153 is the line connection interface; 160 is the storage battery; 170 is the limiting member. Detailed implementation manners

[0035] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0036] In addition, the drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0037] This exemplary embodiment provides an analog signal line detection device 100 for ground tests of solid motors, as Figure 1 and Figure 2 shown. The analog signal line detection device 100 includes:

[0038] A test box body 110, the test box body 110 has an open structure at both ends, an analog signal board 140 is arranged inside the test box body 110, an indicator light switch 150 is arranged on the box wall of the test box body 110, and the analog signal board 140 is electrically connected to the indicator light switch 150;

[0039] A first cover body 120, the first cover body 120 is sleeved at one end of the test box body 110, a charging interface 121 is arranged on the first cover body 120, the input end of the charging interface 121 is connected to an external power supply, the first port of the output end of the charging interface 121 is electrically connected to the analog signal board 140, and the second port of the output end of the charging interface 121 is electrically connected to the indicator light switch 150;

[0040] A second cover body 130 is sleeved on the other end of the test box body 110. A circuit test interface 131 is provided on the second cover body 130. The test end of the circuit test interface 131 is used to connect to a circuit to be tested, and the first port and the second port of the connection end of the circuit test interface 131 are electrically connected to the analog signal board 140 respectively.

[0041] An analog signal circuit detection device 100 for solid rocket motor ground tests proposed by an embodiment of the present application has at least the following beneficial effects:

[0042] (1) In the present application, by providing a test box body 110, a first cover body 120 and a second cover body 130; an analog signal board 140 is arranged inside the test box body 110, a charging interface 121 is arranged on the first cover body 120, and a circuit test interface 131 is arranged on the second cover body 130, it solves the problem that before the solid rocket motor ground test, it is necessary to respectively connect a variety of analog signal generators to each circuit to be tested and then detect whether each circuit is in a normal working state, and the detection process is cumbersome and inconvenient. The analog signal circuit detection device 100 proposed by the present application has a compact structure and a light weight, and can quickly and conveniently judge whether the signal transmission of multiple circuits to be tested in the solid rocket motor ground test is normal;

[0043] (2) In the present application, by using a lithium battery, the power supply capacity of the analog signal circuit detection device 100 is large and it can be charged, which solves the problems of small capacity, troublesome replacement and high cost of using No. 5 batteries in the prior art, and there is no need to worry about power interruption in the middle, improving the working efficiency of the analog signal circuit detection device 100;

[0044] (3) The test box body 110, the first cover body 120 and the second cover body 130 of the present application are all made of PVC materials, with low cost, light weight and good sealing performance, and can achieve the functions of waterproofing, rust prevention, dust prevention and moisture protection;

[0045] (4) In the present application, by providing an indicator light switch 150, which is operated by pressing, and can timely judge the working state of the circuit to be tested, greatly improving the detection efficiency during the solid rocket motor ground test;

[0046] (5) In the present application, the analog signal board 140 controls the range of the supply voltage of the lithium battery, increasing the voltage output range, thereby enhancing the anti-interference ability of the analog signal and enabling the detection function of a variety of circuits to be tested.

[0047] Next, the analog signal circuit detection device 100 for solid rocket motor ground tests proposed in this exemplary embodiment will be described in more detail.

[0048] The working principle of the analog signal line detection device 100 for solid rocket motor ground tests proposed in this application is as follows:

[0049] First, press the indicator switch 150 to start the analog signal line detection device 100, and connect the line test interface 131 on the second cover 130 to the line to be tested.

[0050] Then, the analog signal board 140 generally converts the output voltage of the lithium battery to about 20mv. If other signal outputs are required, they can be adjusted within the voltage range of 0-60mv.

[0051] Finally, according to whether the indicator button 152 on the indicator switch 150 flashes, it is judged whether the line to be tested is normal. If the indicator button 152 flashes, it means the line to be tested is normal; if the indicator button 152 does not flash, it means the line to be tested is not working.

[0052] During the solid rocket motor ground test, multiple sensors generally need to be set up, which requires connecting a line between each sensor and the measurement and control center respectively. Generally, the number of sensors set is the same as the number of connected lines. Therefore, before the solid rocket motor ground test starts, it is necessary to check whether each line is in a normal working state to ensure the smooth progress of the test. When the existing device detects each line, it generally uses multiple analog signal generators to be respectively connected to each line to be tested, and then checks whether each line is in a normal working state. The detection process is cumbersome and inconvenient. The analog signal line detection device 100 proposed in this application uses the analog signal board 140 to replace multiple analog signal generators, with a compact design structure and made of PVC lightweight material, so as to conveniently and quickly detect whether multiple lines to be tested are normal.

[0053] In one embodiment, when starting the analog signal line detection device 100, the charging interface 121 on the first cover 120 is connected to an external power supply for power supply. This poses a risk that the analog signal line detection device 100 cannot work due to a sudden power outage of the external power supply, and even the internal lines of the analog signal line detection device 100 may be damaged due to a sudden power outage. Therefore, in this embodiment, a storage battery 160 is provided in the test box 110. In case of a sudden power outage, it can be promptly switched to the internal storage battery 160 for continuous power supply.

[0054] Further, the charging interface 121 is preferably a DC charging interface 121, that is, a conventional DC charger can be used. In this embodiment, the charging interface 121 is a national standard 3.5 mm universal interface. The charging interface 121 is electrically connected to the analog signal board 140. Of course, according to specific requirements, the charging interface 121 can also adopt other types of interfaces.

[0055] Further, the storage battery 160 is electrically connected to the analog signal board 140. The range of the thermal-sensitive voltage that the traditional analog board can simulate is 0-20 mv, while the analog signal board 140 proposed in this embodiment adopts a wide-output analog signal, and the range of the thermal-sensitive voltage that can be simulated is 0-60 mv. That is, the analog signal board 140 in this embodiment can control the range of the supply voltage of the storage battery 160 within 0-60 mv, which greatly improves the anti-interference ability of the analog signal.

[0056] Furthermore, the storage battery 160 is preferably a commonly used lithium battery on the market, which has good versatility. In this embodiment, the 18650 type lithium battery is adopted. The lithium battery has a large capacity, can solve the problem caused by sudden power failure, does not need to replace the battery frequently, improves work efficiency, reduces costs, and is environmentally friendly.

[0057] In one embodiment, by Figure 1 and Figure 2 It can be seen that the storage battery 160 is clamped between the inner walls of the test box body 110 through a plurality of limiting members 170, and the plurality of limiting members 170 can be symmetrically arranged between the test box body 110 and the storage battery 160. The limiting member 170 can prevent the storage battery 160 from shaking in the test box body 110, causing damage to the wire or welding of the connection point.

[0058] Further, the limiting member 170 is preferably fixed foam. The test box body 110 is made of PVC material. On the one hand, because the texture of the fixed foam is relatively soft, it is not easy to damage the PVC material test box body 110; on the other hand, the fixed foam has good toughness and can withstand moderate extrusion, so it can play a good limiting role and buffering role between the test box body 110 and the storage battery 160.

[0059] In one embodiment, the test box body 110, the first cover body 120 and the second cover body 130 of the analog signal line detection device 100 are all made of PVC material. Compared with the metal material, using the PVC material reduces the cost, is light in weight, has good sealing performance, and can also achieve the functions of waterproof, rust-proof, dust-proof and moisture-proof, and does not require machine processing, and has good maintainability.

[0060] Further, as Figure 2As shown, in this embodiment, the first cover 120 and the second cover 130 can be respectively sleeved at both ends of the test box 110 by applying glue. The PVC material is closely fitted, making its sealing performance good.

[0061] In one embodiment, the indicator switch 150 includes: a housing 151, an indicator button 152, and a line connection interface 153.

[0062] The housing 151 is clamped on the box wall of the test box 110.

[0063] The indicator button 152 is arranged at the upper end of the housing 151 and exposed outside the box wall of the test box 110. In this embodiment, the indicator button 152 is preferably an annular indicator button 152.

[0064] The line connection interface 153 is arranged at the lower end of the housing 151. The line connection interface 153 is electrically connected to the charging interface 121 and the analog signal board 140 respectively. Among them, the charging interface 121 is a standard device. The inner ring of the charging interface 121 is the positive pole, and the outer ring is the negative pole, and there is no need to customize a charger. The positive and negative poles of the analog signal board 140 are distinguished by marks inside.

[0065] In this embodiment, a line processing and conversion unit is arranged in the housing 151. The line processing and conversion unit is respectively connected to the line connection interface 153 and the indicator button 152. The analog signal board 140 transmits the signal of the line to be tested to the indicator switch 150 through a wire. If the line to be tested works normally, the signal makes the annular indicator button 152 flash through the line conversion and processing unit. If the line to be tested does not work, the annular indicator button 152 does not flash.

[0066] In one embodiment, a plurality of test connectors 132 are arranged at the port of the test end of the line test interface 131, and a fixing member 133 is arranged on the outer periphery of the port of the test end. The fixing member 133 plays a role of fixing the line test interface 131 from the outside. The fixing member 133 can be fixed by a plurality of screws to achieve its fixing function.

[0067] Furthermore, a central hole is arranged on the fixing member 133, and a plurality of test connectors 132 all pass through the central hole and are connected to the line to be tested.

[0068] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0069] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0070] As described above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application.

[0071] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application, which follow the general principles of this application and include the common general knowledge or conventional technical means in the technical field not disclosed in this application.

Claims

1. A simulation signal circuit detection device for solid rocket ground test, characterized in that: include: A test box, the test box is a structure with two ends open, an analog signal board is arranged in the test box, an indicator light switch is arranged on the box wall of the test box, and the analog signal board is electrically connected to the indicator light switch; A first cover body, wherein the first cover body is sleeved on one end of the test box body, and a charging interface is provided on the first cover body, wherein an input end of the charging interface is connected to an external power supply, a first port of an output end of the charging interface is electrically connected to the analog signal board, and a second port of the output end of the charging interface is electrically connected to the indicator switch; A second cover body, wherein the second cover body is sleeved on the other end of the test box body, and a line test interface is provided on the second cover body. The test end of the line test interface is used to connect to the line to be tested, and the first port and the second port of the connection end of the line test interface are electrically connected to the analog signal board respectively.

2. The analog signal line detection device according to claim 1, characterized in that: A storage battery is arranged in the test box, and the storage battery is electrically connected to the analog signal board.

3. The analog signal line detection device according to claim 2, characterized in that: The storage battery is clamped between the inner walls of the test box through a plurality of limiting members.

4. The analog signal line detection device according to claim 3, characterized in that: The limiting member is fixed foam.

5. The analog signal line detection device according to claim 2, characterized in that: The storage battery is a lithium battery.

6. The analog signal line detection device according to claim 5, characterized in that: The analog signal board controls the supply voltage of the lithium battery to be within the range of 0 to 60 mv.

7. The analog signal line detection device according to claim 1, characterized in that: The test box, the first cover and the second cover are all made of PVC material.

8. The analog signal line detection device according to claim 1, characterized in that: The indicator light switch comprises: A shell, the shell being clamped on the box wall of the test box; An indicator light button, the indicator light button is arranged at the upper end of the housing and exposed from the box wall of the test box; A line connection interface, the line connection interface is arranged at the lower end of the housing, and the line connection interface is electrically connected to the charging interface and the analog signal board respectively; Wherein, a line processing and conversion unit is arranged in the shell, and the line processing and conversion unit is respectively connected to the line connection interface and the indicator light button.

9. The analog signal line detection device according to claim 1, characterized in that: The port of the test end of the line test interface is provided with a plurality of test connectors, and the periphery of the port of the test end is provided with a fixing piece; The fixing member is provided with a central hole, and the plurality of test connectors respectively pass through the central hole and are connected to the circuit to be tested.

Images