Omnidirectional explosive shock wave pressure testing system and method

Abstract

The invention provides an omni-directional explosive shock wave pressure testing system and method, the testing system comprises a plurality of testing devices, the testing devices are distributed in a to-be-tested area and establish wireless communication with a terminal, the terminal is connected with a display, the testing devices are small in size and simple in structure, and the testing devices are convenient to use. The size, the weight and the cost of the device can be greatly reduced, field installation and operation are facilitated, operation safety is improved through wireless data transmission, a large amount of field wiring is omitted, at most 20 testing devices can be connected through a terminal, manpower and material resources are greatly saved, the networking capacity of the device is improved, simultaneous measurement and data return of multiple devices are ensured, and the testing efficiency is improved. Different distribution can be performed according to different explosive shock wave test ranges, so that a more accurate shock wave pressure distribution diagram can be obtained.

Description

Technical Field

[0001] The invention relates to the field of analyzing explosion shock wave pressure testing, and in particular to an omnidirectional explosion shock wave pressure testing system and method. Background Art

[0002] With the rapid development of science and technology, the ability to evaluate the impact of explosion shock waves on materials and structures has become crucial. In the military and industrial fields, a deep understanding of the omnidirectional explosion shock wave pressure not only helps to improve the protection capability of equipment, but is also a key factor in ensuring personnel safety and engineering design.

[0003] However, current technologies face challenges in terms of scope of application, accuracy, reliability, cost-effectiveness, and ease of operation. Environmental factors such as light and electromagnetic interference may also affect the accuracy of measurements. In addition, the simultaneous collection and distribution of large amounts of data corresponding to explosion shock waves under different physical effects poses challenges to both manpower and technology.

[0004] Therefore, developing new testing technologies to improve their accuracy, reliability, and environmental adaptability while reducing costs and operational complexity is crucial to promoting scientific research and engineering applications and progress.

[0005] Based on this, the present application provides an omnidirectional explosion shock wave pressure testing system and method, which can solve the problem in the prior art that it is impossible to comprehensively measure and record the shock pressure distribution generated by the explosion. Summary of the invention

[0006] The purpose of the present invention is to provide an omnidirectional explosion shock wave pressure testing system and method to solve the problems existing in the above-mentioned prior art.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides an omnidirectional explosion shock wave pressure testing system, comprising a testing device, wherein a plurality of the testing devices are distributed in a to-be-tested area and establish wireless communication with a terminal, and the terminal is connected to a display;

[0009] The testing device includes a base, a shell is fixed on the top of the base, an antenna is provided on the side of the shell, a first pressure diaphragm, a second pressure diaphragm and a third pressure diaphragm are respectively provided on the upper side, front side and right side of the shell, a first pressure push rod, a second pressure push rod and a third pressure push rod are provided inside the shell, the first pressure push rod, the second pressure push rod and the third pressure push rod are respectively arranged corresponding to the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm, pressure sensors are provided at the ends of the first pressure push rod, the end away from the pressure sensor is connected to the motor through a transmission gear, an angle sensor is provided on the side of the motor, and the antenna, the pressure sensor, the motor and the angle sensor are all connected to the circuit board.

[0010] Preferably, an outer edge is provided on the side of the base, a protrusion is provided on the upper surface of the base, and mounting through holes are provided on the outer edge and the protrusion.

[0011] Preferably, the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are all installed through a mounting plane, a groove is provided on the mounting plane, and mounting through holes are provided at four corners of the mounting plane.

[0012] Preferably, the pressure sensor is a thin-film pressure sensor.

[0013] Preferably, the angle sensor is a non-contact angle sensor.

[0014] Preferably, the antenna is connected to its terminal via an extension line of the SMA interface.

[0015] Preferably, a control module, a motor drive module, a data acquisition module and a wireless transmission module are integrated on the circuit board.

[0016] The present invention also provides an omnidirectional explosion shock wave pressure test method, wherein a test device is fixed on the outer wall of a building at a test site, the sensitive surfaces of the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are all arranged outward, the working status of multiple test devices at the test site is observed at a terminal, and a data acquisition instruction is sent to the test device through a remote fixed point of the terminal. Before the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are deformed, the first pressure push rod, the second pressure push rod and the third pressure push rod are controlled by an electric motor to measure the initial values ​​of the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm respectively. When the shock wave generated by the explosion acts on them, the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are deformed and dented, and the first pressure push rod, the second pressure push rod and the third pressure push rod measure them again. The first pressure push rod, the second pressure push rod and the third pressure push rod drive the transmission gear to rotate, and the measured rotation angle is converted into an electrical signal through the angle sensor. The two measurement values ​​before and after the deformation are transmitted to the terminal for data processing to complete the multi-point explosion shock wave measurement. After the terminal analyzes and processes the measurement values, the obtained omnidirectional explosion shock wave pressure data is displayed on the display.

[0017] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0018] The present invention provides an omnidirectional explosion shock wave pressure testing system and method. The testing system includes a testing device. A plurality of the testing devices are distributed in a to-be-tested area and establish wireless communication with a terminal. The terminal is connected to a display. The testing device is small in size and simple in structure, which can greatly reduce the size, weight and cost of the device, facilitate on-site installation and operation, and improve operational safety by wirelessly transmitting data, eliminating the need for a large amount of on-site wiring. A maximum of 20 testing devices can be connected through the terminal, which greatly saves manpower and material resources, and improves its networking capability, ensuring that multiple devices can measure and transmit data simultaneously. Different distributions can be made according to different explosion shock wave test ranges to obtain a more accurate shock wave pressure distribution diagram. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A longitudinal cross-sectional view of a test device in an omnidirectional explosion shock wave pressure test system provided by the present invention;

[0021] Figure 2A transverse cross-sectional view of a test device in an omnidirectional explosion shock wave pressure test system provided by the present invention;

[0022] Figure 3 A top view of a test device in an omnidirectional explosion shock wave pressure test system provided by the present invention;

[0023] Figure 4 A front view of a test device in an omnidirectional explosion shock wave pressure test system provided by the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0025] The purpose of the present invention is to provide an omnidirectional explosion shock wave pressure testing system and method to solve the problems existing in the prior art.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Embodiment 1:

[0028] This embodiment provides an omnidirectional explosion shock wave pressure testing system, including a testing device. Multiple testing devices are distributed in a to-be-tested area and establish wireless communication with a terminal. The terminal is connected to a display.

[0029] For details, please refer to Figure 1-4The test device includes a base 9, which is a polygonal structure with a length of 155 mm, a width of 110 mm, and a thickness of 8 mm. A shell 14 is fixed above the base 9, and the base and the shell are fixed by bolts so that the device is completely closed. An antenna 8 is provided on the side of the shell 14, and a first pressure diaphragm 1, a second pressure diaphragm 2, and a third pressure diaphragm 3 are provided on the upper side, front side, and right side of the shell 14 respectively. A first pressure push rod 4, a second pressure push rod 5, and a third pressure push rod 6 are provided inside the shell 14. The first pressure push rod 4, the second pressure push rod 5, and the third pressure push rod 6 are respectively arranged corresponding to the first pressure diaphragm 1, the second pressure diaphragm 2, and the third pressure diaphragm 3. Pressure sensors 7 are provided at the ends of the first pressure push rod 4, the second pressure push rod 5, and the third pressure push rod 6, and the ends thereof away from the pressure sensor 7 are transmission-connected to the motor 12 through a transmission gear 11. An angle sensor 13 is provided on the side of the motor 12. The antenna 8, the pressure sensor 7, the motor 12, and the angle sensor 13 are all connected to the circuit board 10.

[0030] Furthermore, an outer edge is provided on the side of the base 9, and a square protrusion with a height of 2 mm and a length of 95 mm is provided on the upper surface of the base 9. Both the outer edge and the protrusion are provided with mounting through holes to facilitate the installation of the device and the internal structure of the device.

[0031] Furthermore, the first pressure diaphragm 1, the second pressure diaphragm 2 and the third pressure diaphragm 3 are all installed through a mounting plane, a groove is provided on the mounting plane, and mounting through holes are provided at its four corners. The mounting plane is fixed to the surface of the shell 14 by bolts, and then the pressure diaphragm is glued in the groove by AB glue, thereby achieving the fixation of the pressure diaphragm.

[0032] Furthermore, the pressure sensor 7 is a sheet-type pressure sensor.

[0033] Furthermore, the angle sensor 13 is a non-contact angle sensor.

[0034] Furthermore, the antenna 8 is connected to its terminal via an extension line of the SMA interface.

[0035] Furthermore, a control module, a motor drive module, a data acquisition module and a wireless transmission module are integrated on the circuit board 10, thereby realizing data acquisition and control functions.

[0036] The present embodiment also provides an omnidirectional explosion shock wave pressure test method, wherein the test device is fixed on the outer wall of the building at the test site, the sensitive surfaces of the first pressure diaphragm 1, the second pressure diaphragm 2 and the third pressure diaphragm 3 are all arranged outward, the working status of multiple test devices at the test site is observed at the terminal, and a data acquisition instruction is sent to the test device through the terminal remote fixed point, and before the first pressure diaphragm 1, the second pressure diaphragm 2 and the third pressure diaphragm 3 are deformed, the first pressure push rod 4, the second pressure push rod 5 and the third pressure push rod 6 are controlled by the motor 12 to respectively perform initial values ​​of the first pressure diaphragm 1, the second pressure diaphragm 2 and the third pressure diaphragm 3. Measurement, when the shock wave generated by the explosion acts on them, the first pressure diaphragm 1, the second pressure diaphragm and the third pressure diaphragm 3 are deformed and dented, and the first pressure push rod 4, the second pressure push rod 5 and the third pressure push rod 6 measure them again, and the first pressure push rod 4, the second pressure push rod 5 and the third pressure push rod 6 drive the transmission gear 11 to rotate, and the measured rotation angle is converted into an electrical signal through the angle sensor 13, and the two measurement values ​​before and after the deformation are transmitted to the terminal for data processing to complete the multi-point explosion shock wave measurement. After the terminal analyzes and processes the measurement values, the obtained omnidirectional explosion shock wave pressure data is displayed on the display.

[0037] The present invention provides an omnidirectional explosion shock wave pressure testing system and method. The testing device used is small in size and simple in structure, which can greatly reduce the size, weight and cost of the device, facilitate on-site installation and operation, and improve operational safety by wirelessly transmitting data, eliminating the need for a large amount of on-site wiring. A maximum of 20 testing devices can be connected through a terminal, greatly saving manpower and material resources, and improving its networking capability, ensuring simultaneous measurement and data transmission of multiple devices. Different distributions can be made according to different explosion shock wave test ranges to obtain a more accurate shock wave pressure distribution map.

[0038] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An omnidirectional explosion shock wave pressure testing system, characterized in that: It includes a test device, a plurality of the test devices are distributed in the area to be tested and establish wireless communication with a terminal, and the terminal is connected to a display; The testing device includes a base, a shell is fixed on the top of the base, an antenna is provided on the side of the shell, a first pressure diaphragm, a second pressure diaphragm and a third pressure diaphragm are respectively provided on the upper side, front side and right side of the shell, a first pressure push rod, a second pressure push rod and a third pressure push rod are provided inside the shell, the first pressure push rod, the second pressure push rod and the third pressure push rod are respectively arranged corresponding to the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm, pressure sensors are provided at the ends of the first pressure push rod, the end away from the pressure sensor is connected to the motor through a transmission gear, an angle sensor is provided on the side of the motor, and the antenna, the pressure sensor, the motor and the angle sensor are all connected to the circuit board.

2. The omnidirectional explosion shock wave pressure testing system according to claim 1, characterized in that: An outer edge is provided on the side of the base, a protrusion is provided on the upper surface of the base, and mounting through holes are provided on the outer edge and the protrusion.

3. The omnidirectional explosion shock wave pressure testing system according to claim 1, characterized in that: The first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are all installed through a mounting plane, a groove is provided on the mounting plane, and mounting through holes are provided at four corners of the mounting plane.

4. The omnidirectional explosion shock wave pressure testing system according to claim 1, characterized in that: The pressure sensor is a sheet-type pressure sensor.

5. The omnidirectional explosion shock wave pressure testing system according to claim 1, characterized in that: The angle sensor is a non-contact angle sensor.

6. The omnidirectional explosion shock wave pressure testing system according to claim 1, characterized in that: The antenna is connected to its terminal via an extension line of the SMA interface.

7. The omnidirectional explosion shock wave pressure testing system according to claim 1, characterized in that: The circuit board is integrated with a control module, a motor drive module, a data acquisition module and a wireless transmission module.

8. A method for testing omnidirectional explosion shock wave pressure, characterized in that: The test device is fixed on the outer wall of the building at the test site, and the sensitive surfaces of the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are all set to face outward. The working status of multiple test devices at the test site is observed at the terminal, and data acquisition instructions are sent to the test devices remotely through the terminal. Before the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are deformed, the first pressure push rod, the second pressure push rod and the third pressure push rod are controlled by the motor to measure the initial values ​​of the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm respectively. When the shock wave generated by the explosion acts on them, the first pressure diaphragm, the second pressure diaphragm and the third pressure diaphragm are deformed and concave, and the first pressure push rod, the second pressure push rod and the third pressure push rod measure them again. The first pressure push rod, the second pressure push rod and the third pressure push rod drive the transmission gear to rotate, and the measured rotation angle is converted into an electrical signal through the angle sensor. The two measurement values ​​before and after the deformation are transmitted to the terminal for data processing, and the multi-point explosion shock wave measurement is completed. After the terminal analyzes and processes the measurement value, the obtained omnidirectional explosion shock wave pressure data is displayed on the display.

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