CN112768944B - Antenna, electric tuning control device and electric downtilt adjustment control method thereof - Google Patents
Antenna, electric tuning control device and electric downtilt adjustment control method thereof Download PDFInfo
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- CN112768944B CN112768944B CN202011641737.3A CN202011641737A CN112768944B CN 112768944 B CN112768944 B CN 112768944B CN 202011641737 A CN202011641737 A CN 202011641737A CN 112768944 B CN112768944 B CN 112768944B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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Abstract
The invention provides an electric regulation control device and an electric downtilt regulation control method.A second rotating torque is converted into circumferential motion of a frequency selection part by receiving an external instruction through an electromechanical control module so as to select one target phase modulation control part of a plurality of phase modulation control parts, the first rotating torque is converted into linear motion of the frequency selection part running on a transmission shaft of the first rotating torque, and the selected target phase modulation control part is pushed to an output gear of the selected target phase modulation control part to be meshed with a secondary driving gear of the transmission shaft; and finally, converting the second rotating torque into the axial motion of the secondary driving gear, so that the output gear of the target phase modulation control part drives the target phase modulation control part to execute phase-shift control. The electric tuning control device and the electric downtilt adjustment control method can support a control system of the multi-frequency antenna, and achieve the purpose of controlling the angle adjustment of the multi-frequency antenna by only using two motors in combination with the switching transmission module.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an antenna, an electric tilt control device and an electric downtilt adjustment control method thereof.
Background
The electrical downtilt angle adjustment of the base station electrically tunable antenna is usually realized by driving an antenna phase shifter to move through the rotation of a motor. In the design of the current electric tuning control system, one motor correspondingly adjusts a phase shifter of one antenna frequency band, so that a plurality of motors are needed to be used for a multi-frequency band antenna with dozens of frequency bands. Along with the wide use of multifrequency electric tuning antenna, if every antenna frequency channel all need use a motor to adjust, the cost of multifrequency electric tuning antenna controller will be higher and higher, and the volume will also be bigger and bigger. This is in contradiction with the development direction of 'miniaturization, intellectualization and customization' of the future antenna.
The main body in the industry continuously provides an evolution scheme for an electric control system, including the applicant, but the effect is general overall, because the frequency band number is multiplied and the distance is smaller and smaller for antennas which are smaller and smaller in size, and to meet the requirement of centralized control phase modulation under the condition, the problem needs to be solved systematically, on one hand, the improvement on a mechanical transmission structure part of the electric control system is involved, on the other hand, the improvement on an electromechanical control part is involved, organic coordination is needed between the two aspects, not only the structural cost factor but also the control stability factor and the like are considered.
In summary, in the prior art, a relatively large improvement space still exists for the electronic tuning control scheme of the multiband antenna.
Disclosure of Invention
The invention aims to provide an electric regulation control device which is simple in structure and stable in control.
Another object of the present invention is to provide a method for controlling adjustment of electrical downtilt, which is simple in operation.
It is a further object of the present invention to provide an antenna.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides an electric regulation control device, which comprises an electromechanical control module, a phase-shifting driving module and a switching transmission module,
the phase-shifting driving module comprises a plurality of phase-shifting control pieces which are uniformly distributed along the circumferential direction and are arranged in a telescopic manner along the axial direction, each phase-shifting control piece is sleeved with an output gear for controlling the rotation of the phase-shifting control piece, and each phase-shifting control piece is used for being in linkage arrangement with a phase-shifting part of a corresponding frequency band of the antenna;
the switching transmission module is used for converting a first rotating moment into linear motion of a frequency selection component running on a transmission shaft of the switching transmission module, and converting a second rotating moment into circumferential motion of the frequency selection component and a secondary driving gear driven by the transmission shaft, wherein the secondary driving gear is used for being meshed with an output gear which is sleeved on a phase modulation control piece aligned with the frequency selection component and jacked up after linear motion is executed;
the electromechanical control module is used for receiving an external instruction and controlling a first motor and a second motor of the electromechanical control module to correspondingly output a first rotating torque and a second rotating torque so as to control the frequency selecting component to align one phase modulation control piece to execute phase-shifting control through the cooperation of the two rotating torques.
Furthermore, the switching transmission module is respectively provided with a forward stop member and a reverse stop member at two ends of the space aligning two adjacent phase modulation control members, and the forward stop member and the reverse stop member are used for limiting the frequency selection component to select and align one phase modulation control member in the maximum travel range defined by the forward stop member and the reverse stop member.
Furthermore, the electromechanical control module comprises a control unit, and the first motor and the second motor which are electrically connected with the control unit, a communication module, a memory and a hall feedback device, wherein the hall feedback device is used for detecting the rotation data of the second motor and providing the rotation data for the control unit to calculate the corresponding movement range, the memory is used for storing the electrical downtilt angle state data of the signals corresponding to each frequency band, and the communication module is used for receiving the external instruction.
The invention also provides an electric downtilt angle adjustment control method, which is executed by the control unit of the electric tilt control device and comprises the following steps:
step S11: controlling the first motor to rotate positively to output a first rotating torque, driving a frequency selection component on a transmission shaft to run linearly to realize descending reset, and enabling the frequency selection component to be separated from contact with any phase modulation control piece so as to ensure that the phase modulation control piece is released to be meshed with a secondary driving gear on the transmission shaft;
step S12: controlling the second motor to output a second rotating torque to drive the frequency selection component on the transmission shaft to move circumferentially to reach the alignment position of the phase modulation control component corresponding to the target frequency band specified by the external instruction;
step S13: controlling the first motor to reversely rotate to output a first rotating torque, driving a frequency selecting component on the transmission shaft to linearly run and rise, thereby jacking a phase modulation control component aligned with the position of the phase modulation control component, connecting an extending end of the phase modulation control component with a phase shifting component of a target frequency range, and enabling an output gear of the phase modulation control component to be meshed with a secondary driving gear on the transmission shaft;
step S14: and controlling the second motor to output a second rotating torque to drive a secondary driving gear on the transmission shaft to move circumferentially so as to control the phase modulation control element meshed with the output gear to rotate, thereby driving a phase shifting part connected with the phase modulation control element to perform phase shifting and changing the electric downtilt angle generated by a target frequency band signal.
Further, the electrical downtilt adjustment control method further comprises the following steps:
step S10: and responding to an external instruction received by a communication module of the electric regulation control device, and starting the motor to carry out a standby state.
Further, the method for adjusting and controlling the electrical downtilt angle further comprises the following steps:
step S15: and storing the currently formed electrical downtilt angle state data of the target frequency band in the memory.
Further, step S12 includes the following specific steps:
step S121: controlling a second motor to carry out initialization calibration, and calculating the movement range from the forward stop piece to the reverse stop piece;
step S122: calculating the rotation direction and the rotation quantity corresponding to the position of the phase modulation control element corresponding to the target frequency band when the frequency selection component rotates to the target frequency band according to the movement range;
and step S123, controlling the second motor to operate according to the rotating direction and the rotating amount, so that the frequency selecting component rotates to a position aligned with the phase modulation control component of the target frequency band.
Further, step S121 includes the following specific steps:
step S1211: controlling the second motor to rotate forwards to detect a forward stop part through the frequency selection part;
step S1212: controlling the second motor to rotate in reverse to detect a reverse stopper by the frequency selecting part;
step S1213: the rotating data provided by the Hall feedback device for detecting the rotation of the second motor is used for calculating the moving range from the positive stop piece to the reverse stop piece.
Further, step S14 includes the following specific steps:
step S141: reading the state data of the electrical downtilt angle corresponding to the target frequency band from a memory to obtain the current angle information of the electrical downtilt angle;
step S142: extracting target angle information from an external instruction provided by a communication module;
step S143: calculating an angle modulation stroke corresponding to an angle difference between the target angle information and the current angle information according to a pre-stored algorithm;
step S144: and controlling the second motor to rotate according to the angle adjusting stroke, driving the second-stage driving gear through the transmission shaft, and driving the corresponding phase adjusting control piece to perform phase shifting by the second-stage driving gear, so that the adjustment of the electric downtilt of the target frequency band is realized.
The invention also provides an antenna which adopts the electrical downtilt adjustment control method to adjust the electrical downtilt of the signal.
The technical scheme provided by the invention has the beneficial effects that:
the invention provides an electric regulation control device and an electric downtilt regulation control method.A second rotating torque is converted into circumferential motion of a frequency selection part by receiving an external instruction through an electromechanical control module so as to select one target phase modulation control part of a plurality of phase modulation control parts, the first rotating torque is converted into linear motion of the frequency selection part running on a transmission shaft of the first rotating torque, and the selected target phase modulation control part is pushed to an output gear of the selected target phase modulation control part to be meshed with a secondary driving gear of the transmission shaft; and finally, converting the second rotating torque into the axial motion of the secondary driving gear, so that the output gear of the target phase modulation control part drives the target phase modulation control part to execute phase-shift control. After the phase-shifting control corresponding to the target phase-shifting control piece is finished, the frequency-selecting component is moved downwards to reset by controlling the first rotating torque, and the actions are repeated to select the next target phase-shifting control piece to execute the corresponding phase-shifting control.
The electric tuning control device provided by the invention controls the frequency selection component to align one phase modulation control component to execute phase shift control by matching two rotating moments, so that a control system of a multi-frequency antenna can be supported, and the aim of controlling the angle adjustment of the multi-frequency antenna by only using two motors and combining a switching transmission module is fulfilled.
Because the structure of the electric tuning control device is improved, when the electric tuning control device is used for implementing control, only two motors are adopted to respectively output torque to control different parts, so that phase modulation control on a plurality of frequency band signals can be realized, the structural simplification ensures the stability during control, thereby ensuring the accurate phase modulation effect and greatly reducing the overall cost of the multi-band antenna. In the 5G era, the solution proposed by the invention is helpful to reduce the overall cost of the base station and the difficulty of maintenance.
Other additional advantages of the invention will be given in the detailed description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic block diagram formed by relationships among modules of an electric tuning control device according to the present invention;
FIG. 2 is a schematic diagram of the structure of the main components of the switching transmission module and the partial connection structure of the switching transmission module and the phase shift driving module according to the present invention;
FIG. 3 is a schematic block circuit diagram of the electromechanical control module of the present invention;
FIG. 4 is a schematic flow chart of an electrical downtilt adjustment control method according to the present invention;
FIG. 5 is a flowchart illustrating a detailed step S12 of the electrical downtilt adjustment control method according to the present invention;
FIG. 6 is a schematic view of the circumferential distribution of a plurality of phasing control elements and the relative positioning of associated stops according to the invention;
FIG. 7 is a flowchart illustrating a step S121 of the electrical downtilt adjustment control method according to the present invention;
fig. 8 is a flowchart illustrating a step S14 of the electrical downtilt adjustment control method according to the present invention.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the invention is not limited in this respect.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "coupled" may refer to direct coupling or indirect coupling via intermediate members (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.
It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing the devices, modules or units, and are not used for limiting the devices, modules or units to be different devices, modules or units, and are not used for limiting the sequence or interdependence relationship of the functions executed by the devices, modules or units.
An electric tuning control device is shown in figure 1 and comprises an electromechanical control module 1, a phase-shifting driving module 2 and a switching transmission module 3.
As shown in fig. 2, the switching transmission module 3 includes a first input gear 31 and a second input gear 32, a transmission shaft 30, a lifting mechanism 34, and a frequency selecting member 35.
The two ends of the transmission shaft 30 are respectively and fixedly provided with a first-stage driving gear 301 and a second-stage driving gear 302, and both the first-stage driving gear 301 and the second-stage driving gear 302 can rotate along with the rotation of the transmission shaft 30.
In this embodiment, the lifting mechanism 34 includes a transmission gear 341 and a lifting unit 342, and when the transmission gear 341 rotates clockwise or counterclockwise, the lifting unit 342 can be lifted or lowered, specifically, the transmission gear 341 and the lifting unit 342 are internally provided with a screw nut transmission mechanism to realize the back-and-forth linear motion.
The frequency-selecting component 35 is fixedly connected with a sleeve 36, so that the frequency-selecting component 35 can move axially and circumferentially along with the sleeve 36.
The frequency selecting member 35 is disposed at an end of the elevating portion 342 opposite to the transmission gear 341, and can be lifted and lowered synchronously with the lifting and lowering of the elevating portion 342.
The transmission gear 341, the lifting part 342, and the sleeve part 351 fixedly connected to the frequency selecting member 35 are sequentially fitted over the transmission shaft 30 and disposed between the first-stage driving gear 301 and the second-stage driving gear 302. The frequency selecting member 35 is located near one end of the secondary driving gear 302. The transmission gear 341 is pivotally mounted on the transmission shaft 30, and the rotation of the transmission gear and the rotation of the transmission shaft do not interfere with each other.
When the sleeve 36 is located at the first position of the transmission shaft 30 by lifting, the internal structure of the sleeve 36 is connected with the transmission shaft 30, so that the sleeve can rotate in the same direction along with the rotation of the transmission shaft 30, and the orientation of the frequency selecting component 35 changes along with the rotation of the sleeve.
When sleeve 36 is in the second position of drive shaft 30, its interior is disconnected from drive shaft 30 so that it cannot rotate with drive shaft 30, thereby maintaining the orientation of frequency selective member 35. The distance between the second position and the transmission gear 341 is greater than the distance between the first position and the transmission gear 341.
The first input gear 31 is engaged with the transmission gear 341, and the second input gear 32 is engaged with the primary driving gear 301 of the transmission shaft 30.
When the sleeve 36 is located at the first position, the second input gear 32 is rotated, the second input gear 32 drives the first-stage driving gear 301 of the transmission shaft 30, the first-stage driving gear 301 drives the transmission shaft 30, and the transmission shaft 30 drives the sleeve member 36, so as to change the orientation of the frequency selecting member 35.
After the orientation of the frequency selecting member 35 is determined, the first input gear 31 is rotated, the first input gear 31 drives the transmission gear 341, the lifting portion 342 of the lifting mechanism 34 is far away from the transmission gear 341 when the transmission gear 342 rotates, and the lifting portion 342 pushes the frequency selecting member 35 toward the secondary driving gear 302 of the transmission shaft 30. When sleeve 36, which is fixedly connected to frequency selective member 35, is in the second position, pushing of sleeve 36 is stopped, and sleeve 36 is disconnected from drive shaft 30.
When the sleeve 36 is located at the second position, the second input gear 32 is rotated, the second input gear 32 drives the first-stage driving gear 301 of the transmission shaft 30, the first-stage driving gear 301 drives the transmission shaft 30, and the transmission shaft 30 only drives the second-stage driving gear 302.
In the present embodiment, the force acting on the first input gear 31 is defined as a first rotational torque; the force acting on the second input gear 32 is defined as a second rotational moment. Therefore, the mutual cooperation of the transmission components inside the switching transmission module 3 converts the first rotational torque into the linear motion of the frequency selecting component 35 operating on the transmission shaft 30 thereof, and converts the second rotational torque into the circumferential motion of the frequency selecting component 35 and the secondary driving gear 302 driven by the transmission shaft 30.
The phase-shifting driving module 2 comprises a plurality of phase-adjusting control elements 20 which are uniformly distributed along the circumferential direction of the secondary driving gear 302 of the transmission shaft 30 and are telescopically arranged along the axial direction. In order to better distinguish the orientation relationship between the phasing control 20 and each component of the switching transmission module 3, the direction of the secondary driving gear 302 of the transmission shaft 30 is defined as the upper direction, and one end of the primary driving gear 301 is defined as the lower direction. When the sleeve 36 is located at the first position, the frequency selecting member 35 is located right below one end of the phasing control members 20 close to the transmission gear 341, and the circumferential range of motion of the frequency selecting member 35 corresponds to the circumference of the phasing control members 20. The frequency selecting part 35 can be opposite to a certain phase modulation control part 20 when being at the position corresponding to the phase modulation control part 20.
The phase modulation control part 20 is sleeved with an output gear 201 for controlling the phase modulation control part to rotate, and each phase modulation control part 20 is used for being in linkage arrangement with a phase-shifting part of a corresponding frequency band of the antenna.
The radiation unit column for radiating signals of a certain frequency band of the antenna is fed with signals after phase shifting by one or more phase shifters, the phase shifting of each phase shifter is realized by the movement of the phase shifting part, and the movement of the phase shifting part is controlled by one phase modulation control part 20, so that each phase modulation control part 20 is used for correspondingly controlling the phase shifting of the phase shifting part of the radiation unit column of a frequency band.
The phase-shift driving module 2 is combined with the switching transmission module 3, and the phase-shift design principle of the corresponding frequency band signal is realized through the phase modulation control part 20 as follows:
the linear motion of the frequency selecting component 35 is controlled by inputting the first rotating torque, when the sleeve 36 moves to the first position, the second rotating torque is input, the frequency selecting component 35 makes circumferential motion, and when the frequency selecting component 35 aligns to a phase modulation control component 20 corresponding to a frequency band signal needing phase shifting, the input of the second rotating torque is stopped. The first torque is again input to push the frequency-selective element 35 upwards, while the frequency-selective element 35 pushes the corresponding phasing control 20 upwards until the sleeve 36 is in the second position. The phasing control 20 now controls its own rotary output gear 201 to mesh with the secondary drive gear 302 of the drive shaft 30. The secondary driving gear 302 is used for being meshed with each output gear 201 sleeved on the phasing control member 20 which is aligned with the frequency selecting unit 31 and jacked up after performing linear motion.
After the jacked phase modulation control member 20 is meshed with the secondary driving gear 302, a second rotating torque is input to drive the secondary driving gear 302, and then the phase modulation control member 20 is rotated. Thus, the circumferential motion of the phasing control member 20 controls the phasing operation of the phasing part connected thereto to effect phasing of the corresponding band signal.
After the phase shift of the frequency band signal corresponding to the phasing control member 20 is completed, a first torque is input to lower and reset the frequency selecting member 35 on the transmission shaft 30, so that the frequency selecting member 35 is out of contact with the phasing control member 20 to ensure that the output gear 201 of the phasing control member 20 is released from meshing with the secondary driving gear 302 on the transmission shaft 30.
If the phase of another frequency band signal needs to be shifted, a second rotating torque needs to be input again, the direction of the frequency selecting part 35 is changed, the phase adjusting control part 20 is aligned to another phase adjusting control part, and the phase adjusting actions are repeated.
As shown in fig. 3, the electromechanical control module 1 includes a control unit 10, and the first motor 11 and the second motor 12 electrically connected to the control unit 10, a communication module 13, a memory 14, and a hall feedback device 15. The electromechanical control module 1 is configured to receive an external instruction and control the first motor 11 and the second motor 12 thereof to output the first rotational torque and the second rotational torque, respectively, so as to control the frequency selecting component 35 to align with one of the phasing control components 20 to perform phase shift control through cooperation of the two rotational torques. The hall feedback device 15 is configured to detect rotation data of the second motor 12 and provide the rotation data to the control unit 10 to calculate a corresponding movement range, the memory 14 is configured to store electrical downtilt angle status data of signals corresponding to each frequency band, and the communication module 13 is configured to receive the external instruction.
Based on the above electrical tilt control device, the present invention further provides an electrical downtilt adjustment control method, which is executed by the control unit 10 of the electrical tilt control device, as shown in fig. 4, and includes the following steps:
step S11: controlling the first motor 11 to rotate positively to output a first torque, driving the frequency selecting component 35 on the transmission shaft 30 to move linearly to realize descending and resetting, and enabling the frequency selecting component 35 to be separated from contact with any phase modulation control component 20 so as to ensure that the phase modulation control component 20 is released from being meshed with a secondary driving gear on the transmission shaft;
this step is mainly to control the first motor 11 to rotate forward to output a first torque, and to reset the frequency selecting component 35 to the first position.
In addition, before this step, a step S10 is further included: and responding to an external instruction received by a communication module 13 of the electric tuning control device, and starting the motor to carry out a standby state.
Step S12: controlling the second motor 12 to output a second rotating torque to drive the frequency selecting component 35 on the transmission shaft 30 to move circumferentially to reach an alignment position of the phase modulation control component 20 corresponding to a target frequency band specified by the external instruction;
since the frequency selecting unit 35 selects a target phasing control element to perform a corresponding phase shifting action in all phasing control elements 20 at a time. Since the target phasing control 20 may be different for each selection, the circumferential position of the frequency selecting part 35 may be different after the frequency selecting part is lowered and reset when the phase shifting operation of the target phasing control 20 is completed. In order to make the frequency selecting part 35 operate to the next target phasing control part 20 without error, the second rotating torque correspondingly output by the second motor 12 needs to be controlled accurately to control the stroke of the frequency selecting part 35. Therefore, the position and the stroke of the frequency selecting section 35 need to be initially calibrated.
As shown in fig. 6, in the switching transmission module 3 of the electrical tuning control device, a forward stop member and a reverse stop member are respectively disposed at two ends of the circumferential movement range of the frequency selecting component 35 aligned with the space between two adjacent phasing control members 20, so as to limit the frequency selecting component 35 to selectively align one phasing control member 20 within the maximum travel range defined by the forward stop member and the reverse stop member.
In view of the above, referring to fig. 5 and 6, the step of initializing calibration includes the following steps.
Step S121: controlling the second motor 12 to carry out initial calibration, and calculating the movement range from the positive stop piece to the reverse stop piece;
the phase-shifting driving module 2 is uniformly distributed with a plurality of phase-adjusting control elements 20 along the circumferential direction of the secondary driving gear 302 of the transmission shaft 30, taking an embodiment in which the phase-shifting driving module 2 has six phase-adjusting control elements 20 as an example. The six phase modulation control elements 20 correspondingly control the phase shift of six frequency band signals of the multi-frequency antenna. As shown in fig. 6, the circumferential position corresponding to the lower position directly opposite to the six phasing control elements 20 is the circumferential movement path of the frequency selecting component 35, and in the movement path, six fixed positions a to F are set and respectively correspond to the six phasing control elements 20. At the opposite edges of two adjacent positions a and F, a positive stop 51 and a negative stop 52 are provided, respectively.
The range of motion of the frequency-selecting unit 35 is obtained by the following sub-steps, as shown in fig. 7:
step S1211: controlling the second electric machine 12 to rotate forward to detect a forward stop 51 by the frequency selecting member 35;
the second motor 12 rotates forward to output a second rotation torque, which pushes the frequency selecting member 35 to rotate, and stops outputting the torque when the forward stop member 51 is detected. The hall feedback device 15 detects the rotation data of the second motor 12 and stores it in the memory 14.
Step S1212: controlling said second electric machine 12 to rotate in reverse to detect a reverse stop 51 by means of said frequency-selective member 35;
the second motor 12 reversely rotates the output second rotational torque, and stops outputting the torque after pushing the frequency selecting member 35 to turn toward the reverse stopper 52. The hall feedback device 15 stores the rotation data it detects in the memory 14.
Step S1213: the range of movement L from the forward stopper 51 to the reverse stopper 52 is calculated from the rotation data provided by the hall feedback device 15 detecting the rotation of the second motor 12.
In this step, the control unit 10 calculates the moving range L of the frequency selecting component 35 from the forward stopper 51 to the reverse stopper 52 (the rotation count calculated by the hall feedback device 15 can be directly used) according to the rotation data detected by the hall feedback device 15.
Step S122: calculating the rotation direction and the rotation quantity corresponding to the position of the phase modulation control part 20 corresponding to the target frequency band when the frequency selection part 35 rotates to the target frequency band according to the movement range L;
specifically, referring to fig. 6, if the phasing control 20 corresponding to the position C is the target phasing control 20 that needs to be selected at this time. Since a forward stop 51 and a reverse stop 52 are respectively arranged at the opposite edges of two adjacent positions a and F, the distance between the two adjacent positions is L/(6-1), the position of the target phasing control member 20 at this time is at the position C, i.e. the third position clockwise from a, and then the frequency selecting part 35 needs to move by the range L (C) × (3-1) × L/(6-1) from the position a where the forward stop 51 is located. The control unit 10 sends a corresponding instruction to the second motor 12 according to the calculated range of the target phase modulation control element 20, and after the second motor 12 receives the instruction of the corresponding rotation direction and rotation amount, the next step is executed:
step S123: the second electric motor 12 is controlled to execute the command of the direction and amount of rotation obtained from the previous step, so that the frequency selecting part 35 is rotated to the C position aligned with the phasing control member 20 of the target frequency band, so that the target phasing control member 20 can be accurately pushed up in the next step.
In step S12, the second motor 12 outputs a corresponding second rotation torque to accurately rotate the frequency selecting component 35 to a position corresponding to the target phasing control 20.
Step S13: the control unit 10 sends a corresponding command to the first motor 11 to control the first motor to reversely rotate and output a first rotating torque, so as to drive the frequency selecting part 35 on the transmission shaft 30 to linearly move and ascend, thereby jacking up the target phase modulation control part 20 aligned with the position C thereof, connecting the extending end of the target phase modulation control part with the phase shifting part of the target frequency band, and engaging the output gear 201 of the target phase modulation control part 20 with the second-stage driving gear 302 on the transmission shaft 30.
Step S14: the control unit 10 sends a corresponding command to the second motor 12 again, and controls the second motor 12 to output a second rotation torque, so as to drive the second-stage driving gear 302 on the transmission shaft 30 to move circumferentially, and thus the output gear 201 engaged with the second-stage driving gear 302 drives the corresponding phase modulation control 20 to rotate, so as to drive the phase shift unit connected with the target phase modulation control 20 to shift the phase, thereby changing the electrical downtilt angle generated by the target frequency band signal.
In this step, the amount of rotation required by the target phase modulation control member 20 needs to be determined according to the current electrical downtilt angle state of the target frequency band corresponding to the target phase modulation control member 20 and the angle required to be adjusted next, so that the amount of the second rotation torque required to be output by the second motor 12 is calculated according to a pre-stored algorithm. The method is specifically realized by the following substeps, as shown in fig. 8:
step S141: reading the electrical downtilt angle state data corresponding to the target frequency band from the memory 14 to obtain the current angle information of the electrical downtilt angle;
step S142: extracting target angle information which needs to be adjusted in the target frequency band from an external instruction provided by the communication module 13;
step S143: the control unit 10 calculates an angle modulation stroke n of the second motor corresponding to an angle difference between the target angle information of the target frequency band C and the current angle information according to a pre-stored algorithm.
In this step, after the angle modulation stroke is obtained, the current angle information of the target frequency band may be calibrated through a calibration algorithm, so as to ensure that a more accurate target angle can be obtained after the angle modulation stroke n is completed. It should be noted that the term "angle modulation" as used herein refers to an antenna beam electrical downtilt.
Firstly, assuming that the electrical downtilt angle of the frequency band C is between 0 and 10 degrees, the corresponding phase-shifting stroke can be measured by the second motor 12, and starting the second motor 12 to rotate in the forward direction to adjust the angle in the forward direction until the second motor 12 rotates to the position boundary of the maximum angle of 10 degrees, and then blocking rotation occurs; then, when the second motor 12 is rotated reversely and operated to a position boundary corresponding to the minimum angle of 0 degree, locked rotor occurs, and an angle adjusting stroke N corresponding to an angle adjusting 10 degree is obtained; it is to be noted that the angular adjustment travel N is represented here by rotation count data measured by the hall feedback device 15, which essentially corresponds to the adjustable travel of the phase shifter for that frequency band. On the basis, if the current electrical downtilt angle of the target frequency band is 5 °, the second motor is rotated to operate 5 × N/10 hall counting units, that is, the phase shifter is controlled to operate to the position where the electrical downtilt angle is 5 °, and thus, the calibration of the current state of the target frequency band C is completed.
Similarly, after knowing the stroke N/10 of each angle of a frequency band, a new target angle needs to be set for a required target frequency band, the difference between the target angle and the current angle stored in the memory can be obtained first, and then the angle modulation stroke N of the corresponding second motor is calculated, and of course, the rotation direction of the second motor 12 needs to correspond to the positive value or the negative value of the difference.
Step S144: the control unit 10 controls the second motor 12 to rotate according to the angle adjustment stroke n, and the transmission shaft 30 drives the second-stage driving gear 302, and the second-stage driving gear 302 drives the corresponding phase adjustment control component 20 to perform phase shifting, thereby achieving adjustment of the electrical downtilt angle of the target frequency band C.
After the electrical downtilt adjustment of the target frequency band C is completed, the method further includes a step S15: and storing the currently formed electrical downtilt angle state data of the target frequency band in the memory. So as to extract data for use when the frequency band C needs angle modulation next time.
The stroke data mentioned in this embodiment are obtained by calculating and converting the hall value detected by the hall feedback device 15 according to a predetermined algorithm through the control unit 10, or directly using the rotation data representing the motor rotation count, i.e. the hall value, as the stroke data. The first motor 12 and the second motor 13 are implemented by stepping motors.
The number of the phase modulation control elements 20 in this embodiment is only one implementation manner of the electrical tilt control device and the electrical tilt angle adjustment control method thereof provided by the present invention, and in other embodiments, the number of the phase modulation control elements 20 may be increased or decreased according to the demand of a product.
The invention also provides an antenna which adopts the electrical downtilt adjustment control method to adjust the electrical downtilt of the signal.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the scope of the invention as defined by the appended claims. For example, the above features and (but not limited to) features having similar functions of the present invention are mutually replaced to form the technical solution.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (10)
1. The utility model provides an electrically-tunable control device, includes electromechanical control module, moves drive module and switches transmission module with shifting, its characterized in that:
the phase-shifting driving module comprises a plurality of phase-shifting control pieces which are uniformly distributed along the circumferential direction and are arranged in a telescopic manner along the axial direction, each phase-shifting control piece is sleeved with an output gear for controlling the rotation of the phase-shifting control piece, and each phase-shifting control piece is used for being in linkage arrangement with a phase-shifting part of a corresponding frequency band of the antenna;
the switching transmission module is used for converting a first rotating moment into linear motion of a frequency selection component running on a transmission shaft of the switching transmission module, and converting a second rotating moment into circumferential motion of the frequency selection component and a secondary driving gear driven by the transmission shaft, wherein the secondary driving gear is used for being meshed with an output gear which is sleeved on a phase modulation control piece aligned with the frequency selection component and jacked up after linear motion is executed;
the electromechanical control module is used for receiving an external instruction and controlling a first motor and a second motor of the electromechanical control module to correspondingly output a first rotating torque and a second rotating torque so as to control the frequency selecting component to align one phase modulation control piece to execute phase-shifting control through the cooperation of the two rotating torques.
2. The electrical tilt control device according to claim 1, wherein: the switching transmission module is provided with a forward stop piece and a reverse stop piece respectively at two ends of a space aligning two adjacent phase modulation control pieces, and is used for limiting the frequency selecting component to select and align one phase modulation control piece in the maximum travel range defined by the forward stop piece and the reverse stop piece.
3. The electrical tilt control device according to claim 2, wherein: the electromechanical control module comprises a control unit, a first motor, a second motor, a communication module, a memory and a Hall feedback device, wherein the first motor and the second motor are electrically connected with the control unit, the Hall feedback device is used for detecting rotation data of the second motor and providing the rotation data for the control unit to calculate a corresponding movement range, the memory is used for storing electric downtilt angle state data of signals corresponding to various frequency bands, and the communication module is used for receiving the external instruction.
4. An electrical downtilt adjustment control method executed by a control unit of an electrical tilt control apparatus according to claim 3, characterized by comprising the steps of:
step S11: controlling the first motor to rotate positively to output a first rotating torque, driving a frequency selection component on a transmission shaft to run linearly to realize descending reset, and enabling the frequency selection component to be separated from contact with any phase modulation control piece so as to ensure that the phase modulation control piece is released to be meshed with a secondary driving gear on the transmission shaft;
step S12: controlling the second motor to output a second rotating torque to drive the frequency selection component on the transmission shaft to move circumferentially to reach the alignment position of the phase modulation control component corresponding to the target frequency band specified by the external instruction;
step S13: controlling the first motor to reversely rotate to output a first rotating torque, driving a frequency selecting component on a transmission shaft to linearly run and ascend, so as to jack up a phase modulation control component aligned with the position of the frequency selecting component, connecting an extending end of the phase modulation control component with a phase shifting component of a target frequency band, and enabling an output gear corresponding to the phase modulation control component to be meshed with a secondary driving gear on the transmission shaft;
step S14: and controlling the second motor to output a second rotating torque to drive a secondary driving gear on the transmission shaft to move circumferentially so as to control the phase modulation control element meshed with the output gear to rotate, thereby driving a phase shifting part connected with the phase modulation control element to perform phase shifting and changing the electric downtilt angle generated by a target frequency band signal.
5. The electrical downtilt adjustment control method according to claim 4, comprising the preceding steps of:
step S10: and responding to an external instruction received by a communication module of the electric regulation control device, and starting the motor to carry out a standby state.
6. The electrical downtilt adjustment control method according to claim 4, comprising the subsequent steps of:
step S15: and storing the currently formed electrical downtilt angle state data of the target frequency band in the memory.
7. The electrical downtilt adjustment control method according to claim 6, wherein step S12 includes the following specific steps:
step S121: controlling a second motor to carry out initialization calibration, and calculating the movement range from the forward stop piece to the reverse stop piece;
step S122: calculating the rotation direction and the rotation quantity corresponding to the position of the phase modulation control element corresponding to the target frequency band when the frequency selection component rotates to the target frequency band according to the movement range;
and step S123, controlling the second motor to operate according to the rotating direction and the rotating amount, so that the frequency selecting component rotates to a position aligned with the phase modulation control component of the target frequency band.
8. The electrical downtilt adjustment control method according to claim 7, wherein step S121 comprises the following specific steps:
step S1211: controlling the second motor to rotate forwards to detect a forward stop part through the frequency selection part;
step S1212: controlling the second motor to rotate in reverse to detect a reverse stopper by the frequency selecting part;
step S1213: the rotating data provided by the Hall feedback device for detecting the rotation of the second motor is used for calculating the moving range from the positive stop piece to the reverse stop piece.
9. The electrical downtilt adjustment control method according to any one of claims 4 to 7, wherein step S14 includes the following specific steps:
step S141: reading the state data of the electrical downtilt angle corresponding to the target frequency band from a memory to obtain the current angle information of the electrical downtilt angle;
step S142: acquiring target angle information from an external instruction provided by a communication module;
step S143: calculating an angle modulation stroke corresponding to an angle difference between the target angle information and the current angle information according to a pre-stored algorithm;
step S144: and controlling the second motor to rotate according to the angle adjusting stroke, driving the second-stage driving gear through the transmission shaft, and driving the corresponding phase adjusting control piece to perform phase shifting by the second-stage driving gear, so that the adjustment of the electric downtilt of the target frequency band is realized.
10. An antenna for performing an electrical downtilt adjustment of a signal by using the electrical downtilt adjustment control method according to any one of claims 4 to 9.
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| CN109687146A (en) * | 2019-01-15 | 2019-04-26 | 摩比科技（深圳）有限公司 | The angle of declination regulating device and electrical tilt antenna of electrical tilt antenna |
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| GB191225635A (en) * | 1912-11-08 | 1913-08-28 | Frederick William Burton | Improvements in Twist Lace Machines for Making Traverse Spotted Net. |
| JP2008097731A (en) * | 2006-10-12 | 2008-04-24 | Sony Corp | Recording medium changer |
| CN101521312B (en) * | 2008-02-29 | 2013-05-22 | 京信通信系统（中国）有限公司 | Antenna phase-shift system |
| US10041405B1 (en) * | 2011-02-07 | 2018-08-07 | Ameriband, Llc | Continuously variable displacement engine |
| CN109244640B (en) * | 2018-10-29 | 2023-08-29 | 京信通信技术(广州)有限公司 | Base station antenna, transmission device of electric downtilt angle and switching mechanism |
| CN111029778B (en) * | 2019-12-06 | 2021-10-29 | 京信通信技术(广州)有限公司 | Electric tuning control system, electric tuning control device and electric tuning control method of multi-frequency antenna |
| CN111180891B (en) * | 2020-01-06 | 2021-12-14 | 武汉虹信科技发展有限责任公司 | Adjusting method of multi-frequency electrically-tunable antenna |
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