Target source suitable for testing infrared seeker in narrow space

Abstract

The invention provides a target source suitable for testing an infrared seeker in a narrow space. The target source comprises a shell, a lens, a tungsten lamp, a turntable, a plane mirror group, a sleeve and a motor, the motor is connected with the turntable through a connecting pin to drive the turntable to rotate; the tungsten lamp is mounted on the turntable and deviates from the circle center of the turntable; the plane mirror group is mounted in the sleeve; one end of the sleeve is mechanically connected with the turntable; the sleeve is arranged in the shell; the lens is installed at one end of the shell. The light emitted by the target source tungsten lamp is continuously reflected by the plane mirror group and then passes through the lens to form parallel light, so that a long-distance infrared target is simulated, the requirement of the focal length parameter of the lens in a narrow space is met, and the contradiction between the long-distance light path test requirement and the limited space of a test site is solved. The tungsten lamp is mounted on the rotatable turntable, and the turntable drives the plane mirror group in the sleeve to rotate along with the tungsten lamp all the time in the process of remotely controlling the start, stop and speed change of the motor, so that light emitted by the tungsten lamp is reflected to the axis of the lens all the time, and the requirement on target motion characteristics in the seeker test process is met.

Description

Technical Field

[0001] The invention relates to the field of infrared seeker testing, and in particular to a target source suitable for infrared seeker testing in a narrow space. Background Art

[0002] In order to ensure that the infrared seeker can accurately intercept the target in actual combat, it must be subjected to rigorous performance evaluation during the final assembly test phase, a process that usually needs to be carried out in a specific test plant. Existing seeker test methods often require a certain distance between the target source and the seeker to meet the requirements of the optical system for target imaging. For example, the test procedure for a certain model of seeker stipulates that the target source must be 6 meters away from the lens placed 10 cm in front of the seeker. This setup means that in addition to the space occupied by the seeker itself, the test plant needs to provide an additional 6 meters of space to place the target source, which is a considerable challenge for test sites with limited space.

[0003] At present, some test plants are unable to meet such long-distance testing requirements due to space limitations. Therefore, it is necessary to develop a new type of compact infrared target source, so that the energy emitted by the internal light source is continuously reflected by the plane mirror group and finally reaches the lens at the effective optical path distance (such as 6m) required by the test regulations. At the same time, the overall length of the target source does not exceed 1m, so as to meet the infrared seeker testing requirements of the narrow test plant. Summary of the invention

[0004] The purpose of the present invention is to provide a target source suitable for testing an infrared seeker in a narrow space, so as to solve the contradiction between the requirement of long-distance optical path testing and the limited space of a testing site.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a target source suitable for testing an infrared seeker in a narrow space, comprising a shell, a lens, a tungsten filament lamp, a turntable, a plane mirror group, a sleeve and a motor; the motor is connected to the turntable through a connecting pin to drive the turntable to rotate; the tungsten filament lamp is installed on the turntable and at a position offset from the center of the turntable; the plane mirror group is installed in the sleeve; one end of the sleeve is mechanically connected to the turntable; the sleeve is placed in the shell; the lens is installed at one end of the shell; and the shell is installed on the lifting bracket.

[0006] The above-mentioned target source is suitable for testing an infrared seeker in a narrow space, wherein the light emitted by the tungsten filament lamp passes through the lens to form parallel light after continuous reflection by the plane mirror group; in the sleeve, the positions between the various plane mirrors of the plane mirror group are accurately calculated, so that the optical path distance between the tungsten filament lamp and the lens meets the requirements of the lens focal length parameters, thereby realizing the transformation of a near target to a far target.

[0007] The above-mentioned target source is suitable for testing an infrared seeker in a narrow space, wherein the turntable, the sleeve, the tungsten filament lamp and the plane mirror group form a module, and the rotation of the turntable drives the tungsten filament lamp to rotate around the center of the turntable, and ensures that during the rotation of the turntable, the plane mirror group always follows the movement of the tungsten filament lamp and reflects the light emitted by the tungsten filament lamp onto the axis of the lens at all times.

[0008] The above target source is suitable for testing an infrared seeker in a narrow space, wherein the positions of the plane mirrors in the plane mirror group are adjustable, thereby meeting the requirements of different lens focal length parameters in a narrow space.

[0009] The above-mentioned target source is suitable for testing an infrared seeker in a narrow space, wherein the target source also includes a lifting bracket, and the shell is installed on the lifting bracket; the lifting bracket adjusts the height of the shell to align the axis of the seeker with the target source lens.

[0010] The above-mentioned target source is suitable for testing an infrared seeker in a narrow space, wherein the target source also includes a remote control module, and the remote control module is connected to the motor and the tungsten filament lamp to remotely control the start and stop of the motor and the switch of the tungsten filament lamp.

[0011] The above target source is suitable for testing infrared seekers in a narrow space, wherein the heating area of ​​the tungsten filament lamp does not exceed 4mm 2 .

[0012] The above target source is suitable for testing an infrared seeker in a narrow space, wherein the motor is a continuously variable speed explosion-proof motor.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are:

[0014] The target source of the present invention is suitable for testing an infrared seeker in a narrow space. The light emitted by the tungsten lamp passes through the lens to form parallel light after being continuously reflected by a plane mirror group, so as to simulate a long-distance infrared target, and the requirements of the focal length parameters of the lens in the narrow space are met. When the infrared seeker performs an interception performance test, there is no need to use a large-space test room, and the process of replacing a large-scale test room due to limited space in the test site during field support is avoided, thereby improving the test efficiency. The tungsten lamp is installed on a rotatable turntable, and in the process of remotely controlling the start and stop and speed change of the motor, the turntable drives the plane mirror group in the sleeve. It always follows the rotation of the tungsten filament lamp and reflects the light emitted by the tungsten filament lamp onto the axis of the lens at all times, so as to meet the requirements for the target motion characteristics during the seeker test; the lifting bracket can adjust the height to align the target source and the seeker; the remote control module can realize remote control of the start and stop of the target source, which is convenient for test operation; the lens and the tungsten filament lamp are integrated in the shell, and during the test, there is no need to align the seeker, lens and target (tungsten filament lamp) like the traditional test method, but only the seeker and the lens need to be centered, which reduces the test preparation time; the present invention is particularly suitable for the performance test and evaluation of infrared seekers, and has important practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention.

[0016] Figure 1 A schematic diagram of a target source suitable for testing an infrared seeker in a narrow space according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following is a further detailed description of a target source suitable for testing an infrared seeker in a narrow space proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the accompanying drawings are in a very simplified form and use non-precise ratios, which are only used for the purpose of conveniently and clearly assisting in explaining the embodiments of the present invention.

[0018] Figure 1 Shown is a schematic diagram of a target source suitable for testing an infrared seeker in a narrow space according to an embodiment of the present invention.

[0019] like Figure 1 The target source of the present embodiment suitable for testing an infrared seeker in a narrow space includes a housing 2, a lens 1, a tungsten lamp 3, a turntable 4, a plane mirror group 5, a sleeve 6, a motor 7, a lifting bracket 8 and a remote control module 9;

[0020] The motor 7 is connected to the turntable 4 via a connecting pin, and the motor 7 can drive the turntable 4 to rotate;

[0021] The tungsten filament lamp 3 is installed on the turntable 4 and deviates from the center of the turntable 4. When the turntable 4 rotates, the tungsten filament lamp 3 rotates around the center of the turntable 4, which can meet the requirement of target rotation during the seeker test;

[0022] The plane mirror group 5 is installed in the sleeve 6; one end of the sleeve 6 is mechanically connected (fixedly connected) to the turntable 4 to ensure that the plane mirror group 5 always follows the movement of the tungsten filament lamp 3 during the rotation of the turntable 4, that is, during the rotation of the turntable 4, the position relationship between the plane mirror group 5 and the tungsten filament lamp 3 is relatively static;

[0023] The sleeve 6 is placed in the housing 2;

[0024] The lens 1 is mounted on one end of the housing 2;

[0025] The housing 1 is mounted on the lifting bracket 8, and the lifting bracket 8 can adjust the height of the housing 1;

[0026] The remote control module 9 is connected to the motor 7 and the tungsten filament lamp 3, and can remotely control the start and stop of the motor 7 and the switch of the tungsten filament lamp 3, so as to control the rotation and lighting of the target source according to the test requirements.

[0027] The housing 1 is used to protect the internal precision components (tungsten filament lamp 3 + plane mirror group 5) to prevent dust from interfering with the light source and affecting the internal precision.

[0028] The tungsten filament lamp 3 provides an infrared target for the seeker during the test. In this embodiment, the maximum power of the tungsten filament lamp 3 is required to be 5W, and the heating area of ​​the filament is not more than 4mm. 2 ; The lens 1 is used to refract scattered light into parallel light. In this embodiment, the lens 1 uses a 6m focal length lens; the light emitted by the tungsten filament lamp 3 passes through the lens 2 to form parallel light after continuous reflection from the plane mirror group 5. In this embodiment, in the sleeve 6, the positions between the various plane mirrors of the plane mirror group 5 are accurately calculated, so that the optical path distance between the tungsten filament lamp 3 and the lens 1 reaches 6m, realizing the transition from near targets to far targets, solving the contradiction between the long-distance optical path test requirements and the limited space of the test site, and meeting the requirements for the missile-target distance when the infrared seeker intercepts the target.

[0029] The positions of the plane mirrors of the plane mirror group 5 are adjustable, so as to meet the requirements of different lens focal length parameters in a narrow space.

[0030] The turntable 4, the sleeve 6, the tungsten lamp 3 and the plane mirror group 5 form a module to ensure that during the rotation of the turntable 4, the plane mirror group 5 always follows the movement of the tungsten lamp 3 and reflects the light emitted by the tungsten lamp 3 onto the axis of the lens 1 at all times.

[0031] The lifting bracket 8 adjusts the height of the housing 1 so that the guide head is aligned with the axis of the target source lens 1. In this embodiment, the lifting bracket 8 is required to be stable and adjustable between 1.2m and 1.8m when supporting.

[0032] The motor 7 is a continuously variable explosion-proof motor, which can meet the requirements of the seeker for different dynamic characteristics of the target source. In this embodiment, the explosion-proof grade of the motor 7 is not less than EXⅡB T4 Gb.

[0033] The target source proposed by the present invention is suitable for testing an infrared seeker in a narrow space. The target source has a compact structure and can effectively simulate an infrared target source of a long-distance target in a narrow space, thereby resolving the contradiction between the requirement of long-distance optical path testing and the limited space of a test site.

[0034] Compared with the infrared target source in the prior art, the target source suitable for testing an infrared seeker in a narrow space proposed by the present invention has the advantage that, when the infrared seeker is tested for interception performance, there is no need to use a large-space test room. The plane mirror group continuously reflects light so that the optical path distance between the tungsten filament lamp and the lens meets the requirements of the focal length parameters of the lens in the narrow space, thereby avoiding the need to replace a large-scale test room due to limited space in the test site during field support, thereby improving the test efficiency. At the same time, in the process of remotely controlling the start and stop and speed change of the motor, the turntable drives the plane mirror group in the sleeve to always follow the rotation of the tungsten filament lamp, and constantly reflects the light emitted by the tungsten filament lamp onto the axis of the lens, thereby meeting the requirements for the target motion characteristics during the seeker test.

[0035] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A target source suitable for testing an infrared seeker in a narrow space, characterized in that: It includes a housing, a lens, a tungsten lamp, a turntable, a plane mirror group, a sleeve and a motor; The motor is connected to the turntable via a connecting pin to drive the turntable to rotate; The tungsten filament lamp is installed on the turntable and deviates from the center of the turntable; The plane mirror assembly is installed in the sleeve; One end of the sleeve is mechanically connected to the turntable; The sleeve is placed in the housing; The lens is mounted on one end of the housing.

2. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 1, characterized in that: The light emitted by the tungsten filament lamp passes through the lens to form parallel light after continuous reflection by the plane mirror group; in the sleeve, the positions between the plane mirrors of the plane mirror group are accurately calculated, so that the optical path distance between the tungsten filament lamp and the lens meets the requirements of the lens focal length parameters, thereby realizing the transformation of a near target to a far target.

3. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 2, characterized in that: The turntable, the sleeve, the tungsten filament lamp and the plane mirror group form a module. The rotation of the turntable drives the tungsten filament lamp to rotate around the center of the turntable, and ensures that during the rotation of the turntable, the plane mirror group always follows the movement of the tungsten filament lamp and reflects the light emitted by the tungsten filament lamp onto the axis of the lens at all times.

4. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 2, characterized in that: The positions of the plane mirrors in the plane mirror group are adjustable, which can meet the requirements of different lens focal length parameters in a narrow space.

5. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 1, characterized in that: The target source further comprises a lifting bracket, and the shell is mounted on the lifting bracket; the lifting bracket adjusts the height of the shell to align the axis of the guide head with the target source lens.

6. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 1 or 5, characterized in that: The target source also includes a remote control module, which is connected to the motor and the tungsten filament lamp to remotely control the start and stop of the motor and the switch of the tungsten filament lamp.

7. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 1, characterized in that: The heating area of ​​the filament of the tungsten lamp does not exceed 4mm 2 .

8. A target source suitable for testing an infrared seeker in a narrow space as claimed in claim 1, characterized in that: The motor is a stepless speed-changing explosion-proof motor.

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