Coherent Doppler laser wind finding radar

Abstract

The utility model discloses a coherent Doppler laser wind-finding radar, relates to the technical field of wind-finding radars, and aims to solve the problems that the emission direction of a current laser radar cannot be freely adjusted according to the wind direction, so that an electromagnetic wave weak area exists in the coverage range of electromagnetic waves easily, the intensity of reflected electromagnetic waves is limited, and the cost is low. The device comprises a supporting frame, and a receiver and a circulating emission mechanism which are arranged at the two ends of the supporting frame respectively, the circulating emission mechanism comprises a rotating mechanism and an emitter fixedly installed at one end of the rotating mechanism, and the rotating mechanism comprises a base and a protective cover detachably installed on the base; a transmission shaft is rotationally arranged in the center of the top end of the base. Through the arrangement of the circulating emission mechanism, electromagnetic waves are emitted to the periphery in a circulating manner, so that an electromagnetic wave weak area existing in an electromagnetic wave coverage range is reduced, an electromagnetic wave emission mode is optimized, the receiving strength of reflected electromagnetic waves is guaranteed, and the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind measurement radar technology, and more specifically, to a coherent Doppler laser wind measurement radar. Background Technology

[0002] Doppler wind lidar uses a coherent detection system based on the principle of laser Doppler frequency shift to remotely measure wind field information. It has advantages such as small size, light weight, high spatiotemporal resolution, simple installation and maintenance, and no need for human supervision. It has become one of the most promising technologies in wind field information measurement and has been widely used in wind power, meteorology, civil aviation, military and other fields.

[0003] However, existing lidar technologies, when applied to wind measurement, suffer from limitations because they cannot freely adjust their emission direction according to wind direction. This leads to weak electromagnetic wave zones within the electromagnetic wave coverage area, resulting in limited reflected electromagnetic wave intensity and affecting detection accuracy. Therefore, we propose a coherent Doppler lidar wind measurement system. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a coherent Doppler laser wind radar to solve the technical problem that current laser radars cannot freely adjust the emission direction according to the wind direction, which easily leads to the existence of weak electromagnetic wave areas in the coverage area of ​​electromagnetic waves, resulting in limited reflected electromagnetic wave intensity and affecting detection accuracy.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a coherent Doppler laser wind measuring radar, including a support frame and receivers and a cyclic transmission mechanism respectively disposed at both ends of the support frame;

[0006] The cyclic launching mechanism includes a rotating mechanism and a launcher fixedly installed at one end of the rotating mechanism. The rotating mechanism includes a base and a protective cover detachably installed on the base. A transmission shaft is rotatably arranged at the center of the top of the base, and a driving mechanism for driving the transmission shaft to rotate is installed on one side of the top of the base.

[0007] A mounting base is fixedly installed at one end of the drive shaft that extends out of the protective cover, and the mounting base is fixedly connected to the transmitter.

[0008] This invention, through the setting of a cyclic emission mechanism, drives the transmission shaft to rotate during electromagnetic wave emission, thereby causing the transmitter arranged on the fixed base to rotate and cyclically emit electromagnetic waves in all directions. This reduces the weak electromagnetic wave areas in the electromagnetic wave coverage area, optimizes the electromagnetic wave emission method, ensures the reception strength of reflected electromagnetic waves, and improves the detection accuracy.

[0009] Preferably, the driving mechanism comprises a servo motor and a driven gear, the servo motor is fixedly arranged on one side of the top end of the base, and the driven gear is fixedly installed on the bottom of the outer edge surface of the transmission shaft.

[0010] Preferably, a driving gear is fixedly installed on the motor shaft of the servo motor, and the driving gear is engaged with the driven gear.

[0011] Preferably, guide keys are arranged on both sides of the top end of the protective cover, and arc-shaped guide grooves are arranged on both sides of the bottom end of the fixing seat for sliding arrangement of the guide keys.

[0012] Preferably, the support frame comprises a bottom plate, support arms A and B are arranged on both sides of the top end of the bottom plate respectively, and mounting discs are fixedly arranged on the top ends of the support arms A and B, and the receiver and the base are fixedly arranged on the corresponding mounting discs.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a circular emission mechanism is arranged, when electromagnetic wave emission, driving mechanism drives transmission shaft rotation to drive the emitter arranged on the fixed seat rotation to the four directions circular emission electromagnetic wave to reduce the weak area of electromagnetic wave in electromagnetic wave coverage range, optimize electromagnetic wave emission mode, guarantee the receiving intensity of reflected electromagnetic wave, improve the precision of detection.

[0015] 2、The utility model discloses still through the setting of transmission shaft and driving mechanism, through servo motor drive driving gear rotation to drive the driven gear arranged on transmission shaft rotation, and then drive the fixed seat rotation through transmission shaft, adopt the driving mode of driving gear cooperation driven gear, realize linear drive, greatly improve the stability of rotation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the structure schematic view of the utility model in the rotation state of circular emission mechanism;

[0018] Figure 3 It is the structure schematic view of the utility model in the split state of circular emission mechanism;

[0019] Figure 4 It is the split schematic view of the utility model in the bottom view state of circular emission mechanism;

[0020] Figure 5 It is the structure schematic view of the utility model in the split state of emitter and rotation mechanism.

[0021] Explanation of reference numerals in the drawings:

[0022] 1, support frame; 2, receiver; 3, cyclic emission mechanism; 301, emitter; 4, rotating mechanism; 401, base; 402, protective cover; 403, transmission shaft; 404, fixed seat; 405, servo motor; 406, driven gear; 407, driving gear; 408, arc-shaped guide groove; 409, guide key; 5, bottom plate; 6, support arm A; 7, support arm B. DETAILED DESCRIPTION

[0023] As Figures 1 to 5 shown, the utility model relates to a kind of coherent Doppler laser wind measurement radar, including support frame 1 and respectively being located at the receiver 2 and cyclic emission mechanism 3 of support frame 1 both ends, support frame 1 includes bottom plate 5, and the both sides of bottom plate 5 top end are respectively structured with support arm A 6 and support arm B 7, and the top end of support arm A 6 and support arm B 7 is fixedly provided with mounting disc, receiver 2 and base 401 are respectively fixed on corresponding mounting disc;

[0024] In the embodiment of the utility model, to reduce the weak area of electromagnetic wave existing in electromagnetic wave coverage range, cyclic emission mechanism 3 includes rotating mechanism 4 and emitter 301 fixedly installed at one end of rotating mechanism 4, rotating mechanism 4 includes base 401 and protective cover 402 detachably installed on base 401, transmission shaft 403 is rotatably arranged at the center of base 401 top end, and one side of base 401 top end is provided with driving mechanism for driving transmission shaft 403 to rotate, fixed seat 404 is fixedly installed at the end of transmission shaft 403 extending out of protective cover 402, and fixed seat 404 is fixedly connected with emitter 301, by the setting of cyclic emission mechanism 3, when electromagnetic wave is emitted, transmission shaft 403 is rotated by driving mechanism, so as to drive emitter 301 arranged on fixed seat 404 to rotate, so as to cyclically emit electromagnetic wave to all directions, to reduce the weak area of electromagnetic wave existing in electromagnetic wave coverage range, optimize electromagnetic wave emission mode, guarantee the receiving intensity of reflected electromagnetic wave, improve the precision of detection.

[0025] In the embodiment of the utility model, for improving the stability of rotation, drive mechanism includes servo motor 405 and driven gear 406, servo motor 405 is fixedly arranged at the top end of base 401 one side, and driven gear 406 is fixedly installed on the outer edge face bottom of transmission shaft 403, and the motor shaft of servo motor 405 is fixedly installed with driving gear 407, and driving gear 407 is engaged with driven gear 406, through the setting of transmission shaft 403 and drive mechanism, through servo motor 405 drive driving gear 407 rotation, thereby drive driven gear 406 arranged on transmission shaft 403 rotation, further through transmission shaft 403 drive fixed base 404 rotation, adopt driving gear 407 cooperation driven gear 406 and drive mode, realize linear drive, greatly improve the stability of rotation.

[0026] In the embodiment of the utility model, for further improving the stability when measuring wind, the both sides of the top of protective cover 402 are structured with guide key 409, and the both sides of the bottom of fixed base 404 are provided with arc-shaped guide slot 408 for the sliding arrangement of guide key 409, when fixed base 404 rotates, the guide key 409 arranged in the corresponding arc-shaped guide slot 408 provides guidance for fixed base 404, thereby further improving the stability when measuring wind.

[0027] Working principle: the embodiment provides a coherent Doppler laser wind measurement radar, when using, through bottom plate 5, the device is arranged in the specified position, and through servo motor 405 drive driving gear 407 rotation, thereby drive driven gear 406 arranged on transmission shaft 403 rotation, further through transmission shaft 403 drive fixed base 404 rotation, thereby drive transmitter 301 arranged on fixed base 404 rotation, thereby circularly emit electromagnetic wave to the four directions, to reduce the weak area of electromagnetic wave in electromagnetic wave coverage range, optimize electromagnetic wave emission mode, again through receiver 2 receive reflected electromagnetic wave, guarantee the receiving intensity of reflected electromagnetic wave, improve the precision of detection.

[0028] The embodiment of the utility model discloses the preferable embodiment, but is not limited to this, the ordinary skill of the art, easily understand the spirit of the utility model according to the above-mentioned embodiment, and make different extension and change, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A coherent Doppler wind lidar, characterized in that The utility model relates to a support frame (1) and the receiver (2) and the cyclic emission mechanism (3) of the support frame (1) both ends respectively are equipped with; The cyclic emission mechanism (3) includes rotating mechanism (4) and the emitter (301) fixedly installed one end of rotating mechanism (4), rotating mechanism (4) includes base (401) and detachably mounted on the protection cover (402) of base (401), the centre of base (401) top end rotationally arranged with transmission shaft (403), and the one side of base (401) top end is installed with the drive mechanism of drive transmission shaft (403) rotation; The transmission shaft (403) extends out one end of the protection cover (402) and is fixedly installed with the fixed seat (404), and the fixed seat (404) is fixedly connected with the emitter (301).

2. The coherent Doppler wind lidar of claim 1, wherein, The drive mechanism includes servo motor (405) and driven gear (406), the servo motor (405) is fixedly arranged on the one side of base (401) top end, and the driven gear (406) is fixedly installed on the outer edge surface bottom of transmission shaft (403).

3. A coherent Doppler wind lidar according to claim 2, c h a r a c t e r i z e d in that The motor shaft of servo motor (405) is fixedly installed with driving gear (407), and the driving gear (407) is engaged with driven gear (406).

4. The coherent Doppler wind lidar of claim 1, wherein, The both sides of protection cover (402) top end are all configured with guide key (409), and the both sides of fixed seat (404) bottom end are all provided with arc-shaped guide slot (408) for the sliding arrangement of guide key (409).

5. The coherent Doppler wind lidar of claim 1, wherein, The support frame (1) includes bottom plate (5), the both sides of bottom plate (5) top end are respectively configured with support arm A (6) and support arm B (7), and the top of support arm A (6) and support arm B (7) is fixedly arranged with mounting disc, the receiver (2) and base (401) are respectively fixedly arranged on the corresponding mounting disc.

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