Optical fiber temperature control device of laser radar

Abstract

The utility model discloses an optical fiber temperature control device of a laser radar, and relates to the technical field of laser radars, the optical fiber temperature control device comprises an optical fiber heat preservation module, the optical fiber heat preservation module is provided with a first mounting hole, an optical fiber module is arranged in the first mounting hole, and the optical fiber module is provided with a second mounting hole. An optical fiber connecting module is arranged above the optical fiber heat preservation module and the optical fiber module, the contact area between a device and the optical fiber module is increased through an optical fiber device groove in the optical fiber module, an optical fiber system in the optical fiber module can reach the working temperature more quickly, and the self-checking time is shortened. An optical fiber in the optical fiber module is connected with an external laser and a photoelectric converter through an optical fiber flange through the optical fiber connecting module, so that the adjustability and maintainability of the device are improved, a thermal insulation material is filled between the optical fiber module and the optical fiber thermal insulation module, the whole device keeps working at a constant temperature, the distance measuring precision is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] This patent relates to the field of laser radar technology, specifically a fiber optic temperature control device for laser radar. Background Art

[0002] LiDAR can accurately measure the distance to objects and is widely used in industrial-grade precision measurement. The internal optical transmission modules of different LiDARs vary greatly. The internal light beam transmission of frequency-modulated continuous-wave LiDAR is relatively complex, requiring more optical fiber components. When performing precision measurements, the vibration and temperature of optical fiber components have a significant impact on the measurement. Therefore, the design of the temperature control and packaging of the internal optical components is particularly important. Therefore, the quality of the design of the optical fiber temperature control device directly determines the accuracy and false alarm rate of the entire measurement system.

[0003] However, in existing technologies, optical fiber components are glued into the housing, resulting in a small contact area between the components and the housing. This can lead to temperature differences between the components and the temperature controller, impacting both the temperature control effect and the duration. Furthermore, the optical fibers entering the device are spliced ​​together using bare fiber fusion, which limits adjustability and maintainability.

[0004] Therefore, it is necessary to design an optical fiber temperature control device that is adjustable and maintainable, improves the ranging accuracy of the radar, reduces the system failure rate and increases the life of the equipment. Utility Model Content

[0005] This patent addresses the shortcomings of existing technologies and provides a fiber optic temperature control device for laser radar, which solves the problem of poor ranging accuracy of existing fiber optic temperature control devices.

[0006] To achieve the above objectives, this patent is implemented through the following technical solutions: a fiber optic temperature control device for a laser radar, comprising a fiber optic insulation module, a first mounting hole is provided on the fiber optic insulation module, a fiber optic module is provided in the first mounting hole, a second mounting hole is provided on the fiber optic module, a fiber optic connection module is provided above the fiber optic insulation module and the fiber optic module, a plurality of fiber optic device grooves are provided at the bottom of the fiber optic module, a temperature sensor is provided in the center of the fiber optic module, an electrical signal connector and a fiber optic flange groove are provided on the fiber optic connection module, a fiber optic flange is installed in the fiber optic flange groove, a wiring harness groove is provided on the fiber optic adapter module, and a semiconductor temperature controller is provided at the bottom of the fiber optic insulation module.

[0007] Preferably, a boss is further provided at the bottom of the optical fiber insulation module.

[0008] Preferably, insulation material is filled between the optical fiber module and the optical fiber insulation module.

[0009] Preferably, the number of the semiconductor temperature controllers is 4.

[0010] Preferably, the number of the bosses is 4.

[0011] Preferably, the optical fiber module and the optical fiber thermal insulation module are connected via a fixing member. Beneficial effects

[0012] This patent provides a fiber optic temperature control device for a laser radar, which has the following beneficial effects: This patent has a compact structure and is easy to use. The fiber optic device groove in the fiber optic module increases the contact area between the fiber optic device and the fiber optic module, so that the fiber optic module quickly reaches the required working temperature, reducing the self-test time. The fiber optic connection module connects the optical fiber inside the fiber optic module and the external laser and photoelectric converter through a fiber optic flange, thereby improving the adjustability and maintainability of the device. Insulation material is filled between the fiber optic module and the fiber optic insulation module to keep the entire device at a constant temperature, improve the ranging accuracy and extend the life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is a structural diagram of the optical fiber connection module of the present utility model.

[0015] Figure 3 This is a top view of the optical fiber module of the present invention.

[0016] Figure 4 This is a bottom view of the optical fiber insulation module of the present invention.

[0017] In the figure: 1. Fiber optic connection module; 2. Fiber optic module; 3. Fiber optic insulation module; 4. Electrical signal connector; 5. Fiber optic flange; 6. Fiber optic flange slot; 7. Wiring harness slot; 8. Temperature sensor; 9. Fiber optic device slot; 10. Semiconductor temperature controller; 11. Boss; 12. First mounting hole; 13. Second mounting hole. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solutions in this patent, combined with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this utility model, not all of them. Based on the embodiments in the patent, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this patent.

[0019] See also Figure 1-4, the utility model provides a technical solution: an optical fiber temperature control device for a laser radar, comprising an optical fiber insulation module 3, the optical fiber insulation module 3 is provided with a first mounting hole 12, the first mounting hole 12 is provided with an optical fiber module 2, the optical fiber module 2 is provided with a second mounting hole 13, an optical fiber connection module 1 is provided above the optical fiber insulation module 3 and the optical fiber module 2, the bottom of the optical fiber module 2 is provided with a plurality of optical fiber device grooves 9, a temperature sensor 8 is provided in the center of the optical fiber module 2, an electrical signal connector 4 and an optical fiber flange 5 groove are provided on the optical fiber connection module 1, an optical fiber flange 5 is installed in the optical fiber flange 5 groove, a wiring harness groove 7 is provided on the optical fiber adapter module, a semiconductor temperature controller 10 is provided at the bottom of the optical fiber insulation module 3; a boss 11 is also provided at the bottom of the optical fiber insulation module 3; insulation material is filled between the optical fiber module 2 and the optical fiber insulation module 3; the number of the semiconductor temperature controllers 10 is 4; the number of the bosses 11 is 4; the optical fiber module 2 and the optical fiber insulation module 3 are connected by fixing parts.

[0020] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0021] Embodiment: When in use, the optical fiber module 2 is placed on the first mounting hole 12 in the optical fiber thermal insulation module 3, and the optical fiber module 2 and the optical fiber thermal insulation module 3 are fixed by hexagonal screws. The temperature inside the optical fiber module 2 is judged by the temperature sensor 8. At the same time, the temperature inside the optical fiber module 2 is controlled and adjusted by the semiconductor temperature controller 10 at the bottom of the optical fiber thermal insulation module 3. The optical fiber module 2 is used as a medium for heat conduction or cooling to keep the temperature of the optical fiber device in the optical fiber device slot 9 constant. The optical fiber device slot 9 can increase the contact area between the optical fiber device and the optical fiber module 2, realize heat interaction faster, and increase the heating speed in the optical fiber module 2. Since the optical fiber module 2 and the optical fiber thermal insulation module 3 are isolated by the thermal insulation material, the temperature of the optical fiber module 2 is guaranteed to be constant after the temperature control is completed. The temperature of the optical fiber module 2 will not be adjusted due to energy consumption due to different temperatures of the external environment or the device itself, so that the energy consumption of the entire device is at a low level, energy is saved, work efficiency is improved, and the practicality of the device is increased. The optical fiber inside the optical fiber module 2 and the external laser and photoelectric converter are connected through the optical fiber flange 5 through the optical fiber connection module 1, thereby improving the adjustability and maintainability of the device. The wiring harness groove 7 on the optical fiber connection module 1 is used to organize various lines for people's convenience. Since the entire device is optoelectronically isolated, it is connected to the external temperature-controlled circuit board through the electrical signal connector 4 to avoid the influence of circuit heating on the constant temperature of the optical fiber module 2. Therefore, the use of this device can keep the entire device at a constant temperature, improve the ranging accuracy and extend the life of the device.

[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical fiber temperature control device for a laser radar, characterized in that: It includes an optical fiber insulation module (3), The optical fiber insulation module (3) is provided with a first mounting hole (12), an optical fiber module (2) is provided in the first mounting hole (12), a second mounting hole (13) is provided on the optical fiber module (2), an optical fiber connection module (1) is provided above the optical fiber insulation module (3) and the optical fiber module (2), a plurality of optical fiber device grooves (9) are provided at the bottom of the optical fiber module (2), a temperature sensor (8) is provided in the center of the optical fiber module (2), an electrical signal connector (4) and an optical fiber flange groove (6) are provided on the optical fiber connection module (1), an optical fiber flange (5) is installed in the optical fiber flange groove (6), a wiring harness groove (7) is provided on the optical fiber connection module (1), and a semiconductor temperature controller (10) is provided at the bottom of the optical fiber insulation module (3).

2. The optical fiber temperature control device for laser radar according to claim 1, characterized in that: A boss (11) is also provided at the bottom of the optical fiber heat preservation module (3).

3. The optical fiber temperature control device for laser radar according to claim 1, characterized in that: The space between the optical fiber module (2) and the optical fiber heat insulation module (3) is filled with heat insulation material.

4. The optical fiber temperature control device for laser radar according to claim 1, characterized in that: The number of the semiconductor temperature controllers (10) is four.

5. The optical fiber temperature control device for laser radar according to claim 2, characterized in that: The number of the bosses (11) is 4.

6. The optical fiber temperature control device for laser radar according to claim 1, characterized in that: The optical fiber module (2) and the optical fiber heat preservation module (3) are connected via a fixing member.

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