Laser alignment double-antenna direction finding equipment

Abstract

The utility model provides laser alignment double-antenna direction finding equipment, which comprises a main receiving device and an auxiliary receiving device, the physical center connecting line of the main receiving device and the auxiliary receiving device is a base line, the laser alignment double-antenna direction finding equipment also comprises a positioning assembly, the main receiving device is provided with a reference leaning surface, and the reference leaning surface is parallel to the base line; the auxiliary receiving device is connected with a high-frequency cable, and the auxiliary receiving device is connected with the main receiving device through the high-frequency cable; the positioning assembly comprises a laser device and a laser alignment target position, the laser device is installed on the main receiving device, and the laser alignment target position is arranged on the auxiliary receiving device; the laser is used for emitting laser; according to the utility model, the problems in the prior art that the total size of the device is large and the device is inconvenient to carry and use in order to ensure the measurement precision when the receiving antenna is installed by using a support to fix the arm length can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment calibration, and specifically relates to a laser-aligned dual-antenna direction-finding device. Background Art

[0002] With the establishment of the GPS system and the Beidou navigation system, measurement receivers have been widely used. Dual-antenna north-seeking measurement is an application that uses measurement receiver technology to complete dual-antenna north-seeking. A dual-antenna direction-finding device uses the relative positions of two antennas to complete direction finding (north-seeking). Here, in addition to using the dual antennas and the receiver board to calculate the direction result, the accuracy of the direction-finding result also depends on the relative distance between the two antennas, that is, the baseline length usually defined. In general use, to achieve the given direction-finding accuracy of the receiver, the baseline is required to be not less than 2 meters. If it is necessary to further improve the accuracy of the direction-finding result, it is necessary to increase the length of the baseline (the physical center connection line of the two receiving antennas).

[0003] When using a receiver to complete dual-antenna north-seeking, most of them adopt the form of fixedly installing both antennas on the mounting rack. For example, the utility model with the publication number CN215768981U discloses a directional testing device and a positioning and orientation device (hereinafter referred to as the prior art 1), including: a fixed-angle component, a fixed-length component, and an antenna mounting rack; one end of the fixed-length component is connected to the fixed-angle component, and the other end of the fixed-length component is connected to the antenna mounting rack; the fixed-angle component includes a base, a fixed-angle hole, and a movable fixed-length mounting rod; the movable fixed-length mounting rod is connected to the base in a hinged manner to rotate, and is positioned with any one of the fixed-angle holes on the base through a pin within the rotation range.

[0004] In the prior art 1, when both antennas are fixedly installed on the mounting rack, in order not to affect the measurement accuracy, it is necessary to ensure a certain distance between the lengths of the two antenna arms, so that the distance (baseline) between the two antennas can meet the requirements of the direction-finding accuracy; however, this will cause the size of the direction-finding device to be too large, affecting the carrying and use of the direction-finding device, and restricting its application under field conditions. Content of the Utility Model

[0005] The purpose of the utility model is to provide a laser-aligned dual-antenna direction-finding device, which can solve the problem that in the actual use process, when the prior art direction-finding device installs the receiving antennas in the form of a fixed arm length with a bracket, in order to ensure the measurement accuracy, the overall size of the device is relatively large, making it inconvenient to carry and use.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A laser alignment dual-antenna direction-finding device, comprising a main receiving device and an auxiliary receiving device. The physical center connection line of the main receiving device and the auxiliary receiving device is used as a baseline. The device further comprises a positioning component. A reference abutting surface is provided on the main receiving device, and the reference abutting surface is parallel to the baseline.

[0008] A high-frequency cable is connected to the auxiliary receiving device, and the auxiliary receiving device is connected to the main receiving device through the high-frequency cable.

[0009] The positioning component includes a laser and a laser alignment target. The laser is installed on the main receiving device, and the laser alignment target is arranged on the auxiliary receiving device. The laser is used for emitting laser light and making the laser light align with the center of the target of the laser alignment target.

[0010] Preferably, the main receiving device includes a main antenna and a main device. The main antenna is fixedly installed on the main device. An auxiliary antenna connection seat is provided on the main device, and the auxiliary antenna connection seat is used for connecting with the high-frequency cable. The laser is installed on the main device and is arranged directly below the main antenna, and the reference abutting surface is arranged at the bottom end of the main device.

[0011] Preferably, a heat dissipation slot is provided on the main device.

[0012] Preferably, a display screen for displaying the direction-finding result is provided on the main device.

[0013] Preferably, the auxiliary receiving device includes an auxiliary antenna and a moving seat. The auxiliary antenna is installed on the moving seat. A cable connection seat is provided on the moving seat, and the cable connection seat is used for connecting with one end of the high-frequency cable far from the main receiving device.

[0014] Preferably, the moving seat is a magnetic suction base.

[0015] Preferably, the laser is detachably connected to the main device through a bolt.

[0016] Preferably, a relief hole is provided on the laser, a threaded hole for cooperating with the relief hole is provided on the main device, and the bolt is used for passing through the relief hole and cooperating with the threaded hole to install the laser.

[0017] Preferably, a protective cover is detachably installed on the main device.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] In the present utility model, when direction finding is required, first, by adjusting the position of the auxiliary receiving device so that the laser emitted by the laser device is aligned with the center of the target of the laser alignment target, the laser emitted by the laser device is parallel to the baseline. At this time, the contact surfaces on both sides of the main receiving device are parallel to the laser.

[0020] Through the cooperation of the laser device and the laser alignment target, after confirming that both the laser and the reference contact surface are parallel to the baseline; start the main receiving device and the auxiliary receiving device. The main receiving device and the auxiliary receiving device are used to receive satellite signals; a processor is provided in the main receiving device, and the processor is used to receive the satellite signals sent by the main receiving device and the auxiliary receiving device, and calculate the relative positions of the main receiving device and the auxiliary receiving device and the characteristics of the received signals, so as to achieve high-precision positioning and direction finding; the high-frequency cable is used to transmit the signals received by the auxiliary receiving device to the processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the use state of the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the main receiving device in the present utility model.

[0024] Figure 3 It is a schematic structural diagram of the auxiliary receiving device in the present utility model.

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 101 - Main receiving device, 102 - Auxiliary receiving device, 103 - Positioning component, 104 - Reference contact surface, 105 - Laser device, 106 - Laser alignment target, 107 - Main antenna, 108 - Host device, 109 - Auxiliary antenna connection seat, 110 - Heat dissipation slot, 111 - Display screen, 112 - Auxiliary antenna, 113 - Moving seat, 114 - Cable connection seat, 115 - High-frequency cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0028] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present utility model. To simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0034] See Figures 1 - 3 , this embodiment discloses a direction finding device, specifically a laser alignment dual-antenna direction finding device, which includes a main receiving device 101 and an auxiliary receiving device 102. The physical center connection line of the main receiving device 101 and the auxiliary receiving device 102 is the baseline; it further includes a positioning component 103. A reference abutting surface 104 is provided on the main receiving device 101, and the reference abutting surface 104 is parallel to the baseline;

[0035] A high-frequency cable 115 is connected to the auxiliary receiving device 102, and the auxiliary receiving device 102 is connected to the main receiving device 101 through the high-frequency cable 115;

[0036] The positioning component 103 includes a laser 105 and a laser alignment target 106. The laser 105 is installed on the main receiving device 101, and the laser alignment target 106 is arranged on the auxiliary receiving device 102; the laser 105 is used to emit laser light and make the laser align with the center of the target of the laser alignment target 106.

[0037] In this embodiment, a processor for calculating signal characteristics is provided in the main receiving device 101; after adjusting the position of the auxiliary receiving device 102 so that the laser emitted by the laser 105 is aligned with the bull's-eye of the laser alignment target on the auxiliary receiving device 102, the laser emitted by the laser 105 is parallel to the baseline. At this time, the contact surfaces on both sides of the main receiving device 101 and the laser are both parallel to the baseline; after confirming that the laser is parallel to the reference contact surface 104 through the cooperation of the laser 105 and the laser alignment target; start the main receiving device 101 and the auxiliary receiving device 102. After the main receiving device 101 and the auxiliary receiving device 102 receive satellite signals respectively, the main receiving device 101 transmits the signal to the processor, and the auxiliary receiving device 102 transmits the received satellite signal to the processor through the high-frequency cable 115. After the processor calculates the relative positions of the main receiving device 101 and the auxiliary receiving device 102 and the received signal characteristics, high-precision positioning and direction finding can be achieved; the processor described in this embodiment is a conventional calculation device in the prior art, and its structure and function will not be elaborated one by one here.

[0038] In some embodiments, the main receiving device 101 includes a main antenna 107 and a host device 108, and the main antenna 107 is fixedly installed on the host device 108; an auxiliary antenna 112 connector 109 is provided on the host device 108, and the auxiliary antenna 112 connector 109 is used to connect with the high-frequency cable 115; the laser 105 is installed on the host device 108 and is set directly below the physical center of the main antenna 107, and the reference contact surface 104 is provided at the bottom end of the host device 108. The processor is provided in the host device 108, the main antenna 107 is electrically connected to the processor provided in the host device 108, and the high-frequency cable 115 is electrically connected to the processor provided in the host device 108; the main antenna 107 is used to receive satellite signals and transmit the received signals to the processor for calculation, and the auxiliary receiving device 102 is used to receive satellite signals and transmit the received signals to the processor through the high-frequency cable 115 for calculation.

[0039] In some embodiments, a heat dissipation slot 110 is provided on the host device 108. By providing the heat dissipation slot 110, the heat generated by the controller and other electronic components provided in the host device 108 during operation can be dissipated, preventing potential safety hazards caused by overheating of the host device 108.

[0040] In some embodiments, a display screen 111 for displaying the direction finding result is provided on the host device 108. By providing the display screen 111, it is convenient for the user to directly view the direction finding result and record or adjust it.

[0041] In some embodiments, the auxiliary receiving device 102 includes an auxiliary antenna 112 and a moving base 113, and the auxiliary antenna 112 is mounted on the moving base 113; a cable connection base 114 is provided on the moving base 113, and the cable connection base 114 is used to connect to one end of the high-frequency cable 115 away from the main receiving device 101. In this embodiment, the laser alignment target 106 is provided on the moving base 113 and directly below the physical center of the auxiliary antenna 112; the baseline is the line connecting the physical centers of the main antenna 107 and the auxiliary antenna 112.

[0042] In some embodiments, the moving base 113 is a magnetic suction base. The moving base 113 with magnetic suction function can better adapt to complex working environments and prevent the moving base 113 from shifting or tipping during use.

[0043] In some embodiments, the laser 105 and the host device 108 are detachably connected by bolts. By making the laser 105 and the host device 108 detachably connected, it is convenient to install and replace the laser 105.

[0044] In some embodiments, a protective cover is detachably installed on the host device 108. The protective cover is snap-fitted on the host device 108. By providing the protective cover, the display screen 111 can be protected, and it can prevent the operator from accidentally touching the switch elements provided on the host device 108 during operation.

[0045] In some embodiments, a blocking frame is slidably installed on the protective cover. A sliding groove is provided on the protective cover, and the blocking frame is slidably installed in the sliding groove; the blocking frame is used to block the heat dissipation slot 110 when the host device 108 is in an unused state; to prevent dust and impurities from the outside from entering the host device 108 through the heat dissipation slot 110 when the host device 108 is not started; in this embodiment, a relief groove is provided on the blocking frame, and by providing the relief groove, it can be avoided that the blocking frame collides with the laser 105 during movement.

[0046] In some embodiments, a fixing bolt is bolted to the blocking frame, and a groove is provided on the protective cover. When the host device 108 is in a use state, move the blocking frame upward until the fixing bolt moves to a position corresponding to the groove, and then rotate the locking bolt so that the locking bolt abuts against the groove, and then the fixing and limiting of the blocking frame can be achieved; when the host device 108 is in an unused state, rotate the fixing bolt so that the fixing bolt moves away from the groove, and then move the blocking frame downward to block the heat dissipation slot 110.

[0047] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A laser alignment dual-antenna direction finding device, comprising a main receiving device (101) and an auxiliary receiving device (102), wherein a line connecting the physical centers of the main receiving device (101) and the auxiliary receiving device (102) is a baseline, and is characterized in that: It also includes a positioning component (103), wherein the main receiving device (101) is provided with a reference surface (104), and the reference surface (104) is parallel to the baseline; The auxiliary receiving device (102) is connected to a high-frequency cable (115), and the auxiliary receiving device (102) is connected to the main receiving device (101) via the high-frequency cable (115); The positioning component (103) comprises a laser (105) and a laser alignment target (106); the laser (105) is mounted on the main receiving device (101), and the laser alignment target (106) is arranged on the auxiliary receiving device (102); the laser (105) is used to emit laser light and align the laser light with the center of the laser alignment target (106).

2. A laser alignment dual antenna direction finding device according to claim 1, characterized in that: The main receiving device (101) comprises a main antenna (107) and a host device (108), wherein the main antenna (107) is fixedly mounted on the host device (108); an auxiliary antenna (112) connection socket (109) is arranged on the host device (108), and the auxiliary antenna (112) connection socket (109) is used to connect to the high-frequency cable (115); the laser (105) is mounted on the host device (108) and is arranged directly below the main antenna (107), and the reference support surface (104) is arranged at the bottom end of the host device (108).

3. A laser alignment dual antenna direction finding device according to claim 2, characterized in that: The host device (108) is provided with a heat dissipation slot (110).

4. A laser alignment dual-antenna direction finding device according to claim 3, characterized in that: The host device (108) is provided with a display screen (111) for displaying the direction finding result.

5. The laser alignment dual-antenna direction finding device according to claim 1, characterized in that: The auxiliary receiving device (102) comprises an auxiliary antenna (112) and a movable seat (113), wherein the auxiliary antenna (112) is mounted on the movable seat (113); a cable connecting seat (114) is provided on the movable seat (113), and the cable connecting seat (114) is used to connect to an end of the high-frequency cable (115) away from the main receiving device (101).

6. The laser alignment dual-antenna direction finding device according to claim 5, characterized in that: The movable seat (113) is a magnetic base.

7. The laser alignment dual-antenna direction finding device according to claim 2, characterized in that: The laser (105) and the host device (108) are detachably connected via bolts.

8. The laser alignment dual-antenna direction finding device according to claim 2, characterized in that: The host device (108) is provided with a protective cover which is detachably mounted thereon.

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