阅读说明：本技术 一种光学时间差和爆速测量装置及方法 (Optical time difference and detonation velocity measuring device and method ) 是由 张勇 梁锋 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种光学时间差和爆速测量装置及方法,包括导索、多个导索夹具、多个导光装置和分析计算装置,所述导索安装于多个导索夹具上,所述导索夹具上设置有出口和入口,导索夹具的入口对应导索,所述导光装置设置有出光口和入光口,导索夹具的出口连接导光装置的入光口,导索夹具与导光装置一一对应连接,导光装置的出光口连接分析计算装置。本申请方案发明了一种0.1微秒级的高精度光学时间差和爆速测量装置及方法,其原理是利用导索燃烧放光的特性,采用在导索的多个不同位置布置多个光电传感器接收光信号,记录每个点光信号的时间,通过计算各个点的时间差以及对应的距离,计算出导索燃烧的爆速。(The invention discloses an optical time difference and detonation velocity measuring device and method, which comprises a guide cable, a plurality of guide cable clamps, a plurality of light guide devices and an analysis and calculation device, wherein the guide cable is arranged on the guide cable clamps, the guide cable clamps are provided with an outlet and an inlet, the inlet of each guide cable clamp corresponds to the guide cable, the light guide devices are provided with light outlets and light inlets, the outlets of the guide cable clamps are connected with the light inlets of the light guide devices, the guide cable clamps are connected with the light guide devices in a one-to-one correspondence manner, and the light outlets of the light guide devices are connected with the analysis and calculation device. The principle of the device is that the characteristic of light emission of combustion of a guide cable is utilized, a plurality of photoelectric sensors are arranged at different positions of the guide cable to receive optical signals, the time of each point of the optical signals is recorded, and the detonation velocity of combustion of the guide cable is calculated by calculating the time difference and the corresponding distance of each point.)

1. The utility model provides an optics time difference and detonation velocity measuring device, its characterized in that, includes fairlead, a plurality of fairlead anchor clamps, a plurality of leaded light device and analysis accounting device, the fairlead is installed on a plurality of fairlead anchor clamps, be provided with export and entry on the fairlead anchor clamps, the entry of fairlead anchor clamps corresponds the fairlead, the leaded light device is provided with out the light mouth and goes into the light mouth, and the exit linkage leaded light device's of fairlead anchor clamps income light mouth, the fairlead anchor clamps are connected with the leaded light device one-to-one, and the light mouth of leaded light device is connected analysis accounting device.

2. The optical time difference and detonation velocity measuring device according to claim 1, wherein the light guide device comprises a housing, an optical fiber bundle, an optical amplifier and a condenser lens, one end of the optical fiber bundle is arranged in the housing and corresponds to an outlet of the guide cable clamp, the optical amplifier is mounted at one end of the optical fiber bundle, the other end of the optical fiber bundle penetrates through the housing through the outlet of the guide cable clamp to be connected with the analysis and calculation device, the condenser lens is arranged at an inlet of the guide cable clamp, and the optical fiber bundle is opposite to a condensing point of the condenser lens.

3. An optical time difference and explosion velocity measuring device according to claim 2, wherein a protective glass is further disposed at the light inlet of the light guide device, and the protective glass encapsulates the condensing lens.

4. The optical time difference and detonation velocity measuring device according to claim 1, wherein the analyzing and calculating device comprises a light sensing circuit and an analyzing and calculating device, an input end of the light sensing circuit is connected with a light outlet of the light guide device, and an output end of the light sensing circuit is connected with the analyzing and calculating device.

5. An optical time difference and detonation velocity measuring device according to claim 4, characterised in that the light sensing circuit comprises:

the photoelectric conversion conditioning module is used for extracting optical signals and conditioning the optical signals;

the first-stage signal amplifying and conditioning module and the second-stage signal amplifying and conditioning module are used for carrying out primary and secondary amplifying and conditioning on the extracted signals;

the signal comparison output module is used for outputting the amplified and conditioned signal according to the set threshold;

the photoelectric conversion conditioning module, the primary signal amplification conditioning module, the secondary signal amplification conditioning module and the signal comparison output module are sequentially connected, the input end of the photoelectric conversion conditioning module is connected with the light outlet of the light guide device, and the output end of the signal comparison output module is connected with the analysis computing equipment.

6. An optical time difference and detonation velocity measuring method is characterized by comprising the following steps:

s1, utilizing the characteristic of light emission of the combustion of the guide cable, arranging a plurality of photoelectric sensors at a plurality of different positions of the guide cable to receive light signals;

and S2, recording the time of the optical signal of each point, and calculating the detonation velocity of the combustion of the guide rope by calculating the time difference and the corresponding distance of each point.

7. An optical time difference and detonation velocity measuring method according to claim 6, characterised in that the arrangement at the plurality of different positions of the guide wire is specifically: and according to different numbers of measuring points, corresponding numbers of guide cable clamps and light guide devices are arranged.

8. The method of claim 6, wherein the detonation velocity of the fuse is calculated by the formula:

V1 = L / （T_2-1 – T_1-1）

V2 = L / （T_2-2 – T_1-1）

V3 = L / （T_2-1 – T_1-2）

V4 = L / （T_2-1 – T_1-2）

mean detonation velocity = (V1 + V2 + V3 + V4 +)/4;

wherein, T is_1-1Represents the time when the combustion recorded by the A1 channel reaches the first photo-detection point; t is_1-2Represents the time when the combustion recorded by the A2 channel reaches the first photo-detection point; t is_2-1Represents the time at which the combustion recorded by the B1 channel reaches the second photodetection point; t is_2-2Represents the time at which the combustion recorded by the B2 channel reaches the second photodetection point; l represents the distance between the first light detection point and the second light detection point; v represents the detonation velocity of the fuse; the A1, the A2, the B1 and the B2 are input channels of the analysis computing device respectively, and the A1 and the A2 are connected with a photoelectric sensor on a guide rope; b1 and B2 are connected with another photoelectric sensor on the guide rope.

Technical Field

The invention relates to the field of optical time difference and detonation velocity measurement, in particular to an optical time difference and detonation velocity measurement device and method.

Background

At present, methods such as electrical explosion method measurement, high-speed camera shooting and the like are mainly adopted for measuring the combustion speed of an ignition fuse of rockets, missiles and the like in the aerospace field.

The principle of the measurement by the electric explosion method is that an ionized layer conduction circuit is generated by utilizing air breakdown when a guide cable is burnt, so that the time difference of measuring points at two ends of the guide cable is measured, and the burning speed is calculated.

The high-speed camera shooting method adopts an expensive high-speed camera to shoot the whole combustion process, analyzes the combustion time and further calculates the combustion detonation velocity.

The application of the electric explosion method and the high-speed camera shooting method is mature, and the method is simple, stable and reliable; but also find its disadvantages or drawbacks in the actual production process in that:

1. an electric explosion method:

1.1. the ionosphere generated during the combustion of the guide rope is spherical, and the radius of the ionosphere is small; when the measurement is required, the positions of two measuring points need to be accurately installed and deployed, and the relative positions of the guide cable and the conductive probe are fixed, so that the measurement efficiency is not improved;

1.2. the combustion of the guide cable is accompanied with high-energy explosion, and most of the time, the measuring device is damaged, namely the measuring device is disposable;

1.3. because the relative positions of the guide cable and the conductive probe need to be accurately deployed, the manufacturing, installation and deployment of the measuring device are time-consuming, namely the working efficiency is very low;

1.4. the combustion of the guide cable is accompanied with high-energy electron radiation, and electronic equipment near a measuring site is required to have high capability of preventing electron radiation and electron interference.

2. High-speed imaging method:

2.1. the high-speed camera capable of meeting the performance requirements is extremely expensive, the high-speed camera is easy to be damaged in the measuring process, professional equipment is required for maintenance after the high-speed camera is damaged, the maintenance is inconvenient, and the maintenance cost is extremely high;

2.2. the requirement on environmental cleanliness of a test site is high;

2.3. the high-speed camera and the matched equipment are relatively complex in composition;

2.4. the requirements on the professional technical level and the operation technical level of a tester are high;

2.5. the installation and deployment of the measuring environment are time-consuming, the measuring efficiency is low, and the requirement of large-scale production is not met.

Disclosure of Invention

In view of the above problems, the present invention provides an optical time difference and detonation velocity measuring apparatus and method, which are used to solve the above problems.

The invention is realized by the following technical scheme:

the utility model provides an optics time difference and detonation velocity measuring device, includes fairlead, a plurality of fairlead anchor clamps, a plurality of leaded light device and analysis accounting device, the fairlead is installed on a plurality of fairlead anchor clamps, be provided with export and entry on the fairlead anchor clamps, the entry of fairlead anchor clamps corresponds the fairlead, the leaded light device is provided with out light mouth and goes into the light mouth, and the exit linkage leaded light device's of fairlead anchor clamps income light mouth, and the fairlead anchor clamps are connected with the leaded light device one-to-one, and analysis accounting device is connected to the light mouth of leaded light device.

Furthermore, the light guide device comprises a shell, an optical fiber bundle, an optical amplifier and a condensing lens, one end of the optical fiber bundle is arranged in the shell and corresponds to an outlet of the cable guide clamp, the optical amplifier is arranged at one end of the optical fiber bundle, the other end of the optical fiber bundle penetrates through the shell through the outlet of the cable guide clamp to be connected with the analysis and calculation device, the condensing lens is arranged at an inlet of the cable guide clamp, and the optical fiber bundle is opposite to a condensing point of the condensing lens.

Furthermore, the light inlet of the light guide device is also provided with protective glass, and the protective glass encapsulates the condensing lens.

Furthermore, the analysis and calculation device comprises a photosensitive circuit and analysis and calculation equipment, wherein the input end of the photosensitive circuit is connected with the light outlet of the light guide device, and the output end of the photosensitive circuit is connected with the analysis and calculation equipment.

Further, the light sensing circuit includes:

the photoelectric conversion conditioning module is used for extracting optical signals and conditioning the optical signals;

the first-stage signal amplifying and conditioning module and the second-stage signal amplifying and conditioning module are used for carrying out primary and secondary amplifying and conditioning on the extracted signals;

the signal comparison output module is used for outputting the amplified and conditioned signal according to the set threshold;

the photoelectric conversion conditioning module, the primary signal amplification conditioning module, the secondary signal amplification conditioning module and the signal comparison output module are sequentially connected, the input end of the photoelectric conversion conditioning module is connected with the light outlet of the light guide device, and the output end of the signal comparison output module is connected with the analysis computing equipment.

An optical time difference and detonation velocity measuring method comprises the following steps:

s1, utilizing the characteristic of light emission of the combustion of the guide cable, arranging a plurality of photoelectric sensors at a plurality of different positions of the guide cable to receive light signals;

and S2, recording the time of the optical signal of each point, and calculating the detonation velocity of the combustion of the guide rope by calculating the time difference and the corresponding distance of each point.

Further, the arrangement at the plurality of different positions of the guide cable is specifically as follows: and according to different numbers of measuring points, corresponding numbers of guide cable clamps and light guide devices are arranged.

Further, the detonation velocity calculation formula of the fuse is as follows:

V1 = L / （T_2-1 – T_1-1）

V2 = L / （T_2-2 – T_1-1）

V3 = L / （T_2-1 – T_1-2）

V4 = L / （T_2-1 – T_1-2）

mean detonation velocity = (V1 + V2 + V3 + V4 +)/4;

wherein, T is_1-1Represents the time when the combustion recorded by the A1 channel reaches the first photo-detection point; t is_1-2Represents the time when the combustion recorded by the A2 channel reaches the first photo-detection point; t is_2-1Represents the time at which the combustion recorded by the B1 channel reaches the second photodetection point; t is_2-2Represents the time at which the combustion recorded by the B2 channel reaches the second photodetection point; l represents the distance between the first light detection point and the second light detection point; v represents the detonation velocity of the fuse; the A1, the A2, the B1 and the B2 are input channels of the analysis computing device respectively, and the A1 and the A2 are connected with a photoelectric sensor on a guide rope; b1 and B2 are connected with another photoelectric sensor on the guide rope.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) the application scheme discloses a device and a method for measuring 0.1 microsecond-level high-precision optical time difference and detonation velocity, which have the advantages that the principle is that the light emitting characteristic of fuse burning is utilized, a plurality of photoelectric sensors are arranged at a plurality of different positions of a fuse to receive optical signals, the time of each point of the optical signals is recorded, and the detonation velocity of the fuse burning is calculated by calculating the time difference and the corresponding distance of each point;

(2) the application scheme discloses a high sensitivity's photosensitive circuit, can be accurate to the measurement accuracy of 0.1 microsecond sensitization time difference.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a structural diagram of an optical time difference and detonation velocity measuring apparatus according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a photoelectric conversion conditioning module according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a primary signal amplifying and conditioning module according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a two-stage signal amplifying and conditioning module according to an embodiment of the present invention;

fig. 5 is a schematic circuit diagram of a signal comparison output module according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating the structural significance of an optical time difference and detonation velocity measuring device with a plurality of detecting points according to an embodiment of the present invention;

FIG. 7 is a block diagram of a reusable fixture apparatus for optical time difference and detonation velocity measurement according to an embodiment of the present invention;

in the figure, 1-base, 2-guide cable, 3-clamp device, 4-support bottom plate, 5-baffle, 6-horizontal positioning pin, 7-vertical positioning pin, 8-support U-shaped plate, 9-light guide plate, 10-light guide groove, 11-light screen, 12-mounting seat, 13-spring, 14-pull rod and 15-pressing head.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

Example 1

The embodiment provides an optics time difference and detonation velocity measuring device, including fairlead, a plurality of fairlead anchor clamps, a plurality of leaded light device and analysis accounting device, the fairlead is installed on a plurality of fairlead anchor clamps, be provided with export and entry on the fairlead anchor clamps, the entry of fairlead anchor clamps corresponds the fairlead, the leaded light device is provided with out light mouth and goes into the light mouth, and the exit linkage leaded light device's of fairlead anchor clamps income light mouth, the fairlead anchor clamps are connected with the leaded light device one-to-one, and analysis accounting device is connected to the play light mouth of leaded light device.

Furthermore, the light guide device comprises a shell, an optical fiber bundle, an optical amplifier and a condensing lens, one end of the optical fiber bundle is arranged in the shell and corresponds to an outlet of the cable guide clamp, the optical amplifier is arranged at one end of the optical fiber bundle, the other end of the optical fiber bundle penetrates through the shell through the outlet of the cable guide clamp to be connected with the analysis and calculation device, the condensing lens is arranged at an inlet of the cable guide clamp, and the optical fiber bundle is opposite to a condensing point of the condensing lens.

Furthermore, the light inlet of the light guide device is also provided with protective glass, and the protective glass encapsulates the condensing lens.

Furthermore, the analysis and calculation device comprises a photosensitive circuit and analysis and calculation equipment, wherein the input end of the photosensitive circuit is connected with the light outlet of the light guide device, and the output end of the photosensitive circuit is connected with the analysis and calculation equipment.

Further, the light sensing circuit includes:

the photoelectric conversion conditioning module is used for extracting optical signals and conditioning the optical signals;

the first-stage signal amplifying and conditioning module and the second-stage signal amplifying and conditioning module are used for carrying out primary and secondary amplifying and conditioning on the extracted signals;

the signal comparison output module is used for outputting the amplified and conditioned signal according to the set threshold;

the photoelectric conversion conditioning module, the primary signal amplification conditioning module, the secondary signal amplification conditioning module and the signal comparison output module are sequentially connected, the input end of the photoelectric conversion conditioning module is connected with the light outlet of the light guide device, and the output end of the signal comparison output module is connected with the analysis computing equipment.

Example 2

On the basis of embodiment 1, this embodiment further provides an optical time difference and detonation velocity measuring method, including the following steps:

s1, utilizing the characteristic of light emission of the combustion of the guide cable, arranging a plurality of photoelectric sensors at a plurality of different positions of the guide cable to receive light signals;

and S2, recording the time of the optical signal of each point, and calculating the detonation velocity of the combustion of the guide rope by calculating the time difference and the corresponding distance of each point.

Further, the arrangement at the plurality of different positions of the guide cable is specifically as follows: according to different numbers of measuring points, corresponding numbers of guide cable clamps and light guide devices are arranged, as shown in figure 6.

Further, the detonation velocity calculation formula of the fuse is as follows:

V1 = L / （T_2-1 – T_1-1）

V2 = L / （T_2-2 – T_1-1）

V3 = L / （T_2-1 – T_1-2）

V4 = L / （T_2-1 – T_1-2）

mean detonation velocity = (V1 + V2 + V3 + V4 +)/4;

wherein, T is_1-1Represents the time when the combustion recorded by the A1 channel reaches the first photo-detection point; t is_1-2Represents the time when the combustion recorded by the A2 channel reaches the first photo-detection point; t is_2-1Represents the time at which the combustion recorded by the B1 channel reaches the second photodetection point; t is_2-2Represents the time at which the combustion recorded by the B2 channel reaches the second photodetection point; l represents the distance between the first light detection point and the second light detection point; v represents the detonation velocity of the fuse; the A1, the A2, the B1 and the B2 are input channels of the analysis computing device respectively, and the A1 and the A2 are connected with a photoelectric sensor on a guide rope; b1 and B2 are connected with another photoelectric sensor on the guide rope.

Example 3

On the basis of embodiment 1, this embodiment further provides a reusable fixture device for measuring optical time difference and detonation velocity, as shown in fig. 7, including a base 1, a guide cable 2, and two fixture devices 3, where the two fixture devices 3 are respectively installed at two ends of the base 1 in the horizontal direction, and the guide cable 2 is clamped by the two fixture devices 3, where the fixture device 3 includes a support seat, a baffle 5, a horizontal positioning pin 6, a vertical positioning pin 7, and a pressing device, the baffle 5 is installed at one end of the base 1 in the vertical direction, one end of the horizontal positioning pin 6 is installed on the baffle 5, the other end corresponds to the pressing device, the other end of the horizontal positioning pin 6 is matched with the pressing device to clamp the guide cable 2 in the horizontal direction, and the vertical positioning pin 7 is installed on the base 1.

Further, the supporting seat comprises a supporting bottom plate 4 and a supporting U-shaped plate 8, the closed end of the supporting U-shaped plate 8 is fixedly connected with the top of the supporting bottom plate 4, the bottom of the supporting bottom plate 4 is fixedly connected with the base 1, and an outer side surface of the supporting U-shaped plate 8 is fixedly connected with the pressing device.

Further, a light guide plate 9 is further arranged on the supporting U-shaped plate 8, a light guide groove 10 is arranged on the light guide plate 9, and a light inlet of the light guide groove 10 corresponds to the guide rope 2.

Further, be provided with light screen 11 on the light guide plate 9, be provided with the draw-in groove on the support U template 8, light screen 11 is fixed in on the support U template 8 through the draw-in groove.

Further, closing device includes pull rod 14, spring 13, mount pad 12 and hold-down head 15, and 12 both ends of mount pad are provided with the through-hole, spring 13 installs inside mount pad 12 to relative with the through-hole, pull rod 14 passes through the through-hole bolt in mount pad 12, and passes inside spring 13, and hold-down head 15 installs in 14 one end of pull rod to horizontal positioning pin 6 corresponds, and 14 handles of pull rod are installed to the other end of pull rod 14.

Further, the handle of the pull rod 14 is L-shaped.

Furthermore, a spring plate is arranged on the pull rod 14, and the spring plate is connected with one end of the spring 13 close to the horizontal positioning pin 6.

Further, the mounting seat 12 is mounted on an outer side surface of the supporting U-shaped plate 8.

Specifically, the specific implementation principle flow of this embodiment is as follows:

the quick positioning and mounting function is realized by the horizontal positioning pin 7, the vertical positioning pin 7 and the pressing device together; the pressing device consists of a pull rod 14 with a handle, a spring 13, a mounting seat 12 and a pressing head 15 arranged at the head of the pull rod 14; when the device is installed, the pull rod 14 of the pressing device is pulled firstly to separate the pressing head 15 from the horizontal positioning pin 6, then the guide cable 2 is tightly attached to the horizontal and vertical positioning device to be placed, then the pull rod 14 is loosened, the spring 13 pushes the pull rod 14 to enable the pressing head 15 to press the horizontal positioning pin 6, and the positioning and installation of the lead are completed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.