CN1332175C - Apparatus and method for detecting electronic declination angle of communication antenna - Google Patents
Apparatus and method for detecting electronic declination angle of communication antenna Download PDFInfo
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- CN1332175C CN1332175C CNB2005100366451A CN200510036645A CN1332175C CN 1332175 C CN1332175 C CN 1332175C CN B2005100366451 A CNB2005100366451 A CN B2005100366451A CN 200510036645 A CN200510036645 A CN 200510036645A CN 1332175 C CN1332175 C CN 1332175C
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- potentiometer
- phase shifter
- angle
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Abstract
The present invention relates to a detecting device for an electric declinational angle of a communication antenna, which comprises a motor driving device (1), a phase shifter (2) and a regulation resistance (3). The moving end of the regulation resistance (3) is mechanically connected with a displaceable part of the phase shifter (2), and the motor driving device (1) drives the phase shifter (2) and the regulation resistance (3) to move synchronously. The present invention also relates to a detecting method for the electric declinational angle of the communication antenna, and the detecting device for the electric declinational angle of the communication antenna of the present invention has the advantages of simple structure and low cost, and can achieve the closed-loop control that the antenna is electrically adjusted; the detecting method for the electric declinational angle of the communication antenna of the present invention for achieving the closed-loop control that the antenna is electrically adjusted has the advantage of simple method, and the stepping precision can reach a 0.1 DEG stepping standard of an AISG conventional rule.
Description
Affiliated technical field
The present invention relates to the pick-up unit of the electrical down-tilting angle of mobile communication base station electrical tilt antenna, the invention still further relates to the detection method of the pick-up unit that adopts this electronic declination angle of communication antenna.
Background technology
At the tabular antenna for base station of moving communicating field widespread use, the overlay area of the tilt angled down of antenna decision controlling antenna wave beam to point.Adopt the antenna at mechanical angle modulation or fixed electrical tilt angle to be difficult to satisfy the demand that networking is optimized.Electrical tilt antenna be fit to solve very that the big and medium-sized cities district is intensive because of the user, stop spacing little produces distinguish interference problem more, solve the often provisional traffic hot issue of appearance of urban district easily.In communication network optimize: the kind and the model that reduce the antenna that needs manufacturing; Simplify field program, reduced the expense of sub-district site operation.Because the electrical tilt angle can wired adjusting at the bottom of tower, or, also can unify the centrally controlled network management in a city away from carrying out straighforward operation outside the scene.
The application people is a U.S. Andrew Corporation, and application number is 02118421.6, and publication number is CN1492539A, and denomination of invention is the Chinese patent of " antenna control system ", and it discloses the antenna control system that the remote control of a kind of energy changes antenna beam tilt.Drive unit is adjusted the phase shifter of presenting distribution network that is connected with radiated element continuously, thereby changes the inclination of antenna beam continuously, the beam tilt of the remote-controlled change of controller some antennas at the scene.The displacement control of the phase shifter of this patented claim is the half-closed loop control mode.
The phase shifter of electrical tilt antenna is a critical component, and version is more at present, but can divide for a change microstrip line length and change medium dual mode in essence, all comprises transportable parts, is driven through speed reduction unit by motor.And the displacement of phase shifter control, because the restriction of antenna manufacturing cost, product in the market all is open loop control or half-closed loop control mode.When the shared hand held controller of several slave antennas was connected by turns, perhaps electrical tilt antenna needed self calibration after just enabling and using for a long time, the omnidistance back and forth movement of motor; This self-calibration process has 2-4 branch clock time.If antenna is worked, the just inevitable lossing signal of self calibration.Do not need self calibration if wish antenna, motor outage in service back start also can be known present Downtilt at once, must realize closed-loop control.In addition, in the use, for open loop control, even the cable dialysis, perhaps motor is stuck, and perhaps gear train is tried to shirk responsibility, and uses and does not learn, in the same old way adjusting angle.For half-closed loop control, the omnidistance self check that comes and goes fortune of motor is proofreaied and correct, could find to be out of order.The electrical tilt antenna of Argus company is closed-loop control, and with discrete resistor queuing, structure is complicated, and 0.25 ° of stepping accuracy, does not also reach 0.1 ° of stepping standard of AISG agreement regulation.
In communication antenna, adopt potentiometer Displacement Measurement problem,, also have the measurement of potentiometer output potential difference except in the selection of potentiometer and being connected and fixing Design of Mechanical Structure of gear train.In the outdoor electromagnetic environment in big city, have various electromagnetic waves, the space electromagnetic induction makes when interference voltage has tens millivolts on the transfer wire that reaches tens meters, how to get rid of interference, detect the DC voltage change of several millivolts of orders of magnitude, this is the realization technology of controller.
Summary of the invention
Technical matters to be solved by this invention provides a kind of low-cost electrical tilt antenna closed-loop control that realizes, with the pick-up unit of the electronic declination angle of communication antenna that improves the antenna control performance.
Another technical matters to be solved by this invention provides a kind of employing above-mentioned detection device, realizes the detection method of the communication antenna lower decline angle of electrical tilt antenna closed-loop control.
The present invention solves the technical scheme that its technical matters adopts:
A kind of pick-up unit of electronic declination angle of communication antenna, it comprises: motor driver, phase shifter, potentiometer and controller; The movable part mechanical attachment of the moved end of described potentiometer and phase shifter, described motor driver drives phase shifter, potentiometer is synchronized with the movement, increase a changeless voltage for the potentiometer stiff end, when electric current flows through potentiometer and is placed on stake resistance in the controller, the voltage that detects a follower ends change in location in the potentiometer moved end and change, this voltage is through 10 analog-digital converters, handle through the controller calculation procedure after becoming numeral, to be used to detect electronic declination angle of communication antenna.
Described potentiometer is a rotational potentiometer, described motor driver is the drive motor that contains speed reduction unit, gears in gear process neutral gear in the described drive motor rotating shaft and the described phase shifter rotating shaft that is contained in, gear while in the described drive motor rotating shaft and the gearing mesh that is contained in the rotational potentiometer rotating shaft.
The omnidistance run duration of above-mentioned phase shifter is 1-2 minute; Described potentiometer no matter be multi-turn or individual pen, corresponding control stroke is at least 2/3rds of potentiometer total travel.
Described potentiometer is a linear potentiometer, described motor driver is the deceleration direct current generator, described deceleration direct current generator is rack-mount, in the rotating shaft of described deceleration direct current generator leading screw is housed, and described leading screw is threaded with the slide block of moving linearly; Described support is provided with a back-up ring, and described back-up ring is positioned at the end of leading screw; Described slide block is connected with the other end that an end is connected with the push rod of phase shifter; Linear potentiometer can be stirred simultaneously in described slide block lower end.
A kind of detection method that adopts the electronic declination angle of communication antenna of above-mentioned pick-up unit, it comprises the steps:
(1) pick-up unit is installed on the antenna of mobile communication base station;
(2) measure the potentiometer moved end omnidistance when mobile and the resistance value between another stiff end from R1 to R2, change, simultaneously, measure the omnidistance lower decline angle variation of antenna when mobile of the phase shifter that is synchronized with the movement with potentiometer, and the resistance change amount of correspondence is (R2-R1)/N when calculating 1 ° of the every variation of angle of declination from 0 ° to N °;
(3) give the potentiometer stiff end and add the voltage that immobilizes, electric current flows through potentiometer and is placed on the interior stake resistance of controller, detects a voltage that changes with potentiometer moved end change in location in the moved end; This voltage is handled through the controller calculation procedure after 10 simulation number space converters become numeral, be reduced to amount with the linear ratio of resistance variations, also be the amount that is varied to linear scaling with the angle of phase shifter simultaneously, by multiply by the tilt angled down that a scale-up factor just can calculate antenna.
The output terminal potential difference (PD) of described potentiometer adopts the telepilot that is positioned at base station machine room to detect in real time.
Beneficial effect of the present invention:
Realize that gordian technique of the present invention is to adopt the position detector of potentiometer as the phase shifter displacement, realize full cut-off ring control, promote whole control of quality and performance the antenna downtilt angle.
The present invention has omitted the self check trimming process of the omnidistance back and forth movement of the necessary motor of open loop or half-closed loop control mode owing to adopt potentiometer to realize the full cut-off ring of antenna lower decline angle control.
Can judge the mechanical fault of stube cable and motor owing in antenna of mobile communication base station, use linear potentiometer.
The present invention adopts the potentiometer detection position, and is simple in structure, and stepping accuracy can reach 0.1 ° of stepping standard of AISG agreement regulation.
The present invention disposes remote manipulator, allows just can change by shirtsleeve operation under not shutdown situation the electrical down-tilting angle of antenna.This mode is not only exempted the fatigue that operating personnel climb antenna tower, also avoids climbing the trouble in building in the city.
The present invention's design it is also conceivable that and makes things convenient for the user, perfect, friendly interface is provided.Operating personnel can select the base station from click mode on the electronic chart at central control room (CCR), convenient, the simple and direct tilt angled down that carries out each antenna downtilt angle inquiry or change antenna.The output form of information is intuitively eye-catching, can see antenna coverage areas on the map.During antenna generation control fault, automatic prompting is arranged.
Description of drawings
Structural drawing when Fig. 1 adopts rotational potentiometer for the present invention;
Fig. 2 adopts linear potentiometer for the present invention, the structural drawing the when end of push rod connects phase shifter.
Among the figure, 1 is motor driver, the 2nd, and phase shifter, the 3rd, potentiometer, 11,12,13,14 is gear, and 22 is support, and 23 is leading screw, and 24 is slide block, and 25 is back-up ring, and 27 is push rod.
Embodiment
As shown in Figure 1, a kind of pick-up unit of electronic declination angle of communication antenna, use the scheme of rotational potentiometer, described motor driver 1 is for containing the drive motor of speed reduction unit, described potentiometer 3 is a rotational potentiometer, gear 12 process neutral gears 13 in the described drive motor rotating shaft are coupled with the gear 14 in described phase shifter 2 rotating shafts that are contained in, and 12 whiles of gear in the described drive motor rotating shaft and the gear 11 that is contained in the rotational potentiometer rotating shaft mesh.
The drive motor driven gear 12 that contains speed reduction unit rotates; Gear 12 is through neutral gear 13 couplings, driven gear 14; And gear 14 drives phase shifter 2 rotations.Gear 12 drives potentiometer 3 by gear 11 simultaneously and rotates.Noting making the omnidistance run duration of phase shifter during the design kinematic train is 1-2 minute; Potentiometer no matter be multi-turn or individual pen, corresponding control stroke is at least 2/3rds of potentiometer total travel.
As shown in Figure 2, a kind of pick-up unit of electronic declination angle of communication antenna, use the scheme of linear potentiometer, described motor driver 1 is the deceleration direct current generator, described potentiometer 3 is a linear potentiometer, described deceleration direct current generator is installed on the support 22, and leading screw 23 is housed in the rotating shaft of described deceleration direct current generator, and described leading screw 23 is threaded with the slide block 24 of moving linearly; Described support 22 is provided with a back-up ring 25, and described back-up ring 25 is positioned at the end of leading screw 23; Described slide block 24 is connected with the other end that an end is connected with the push rod 27 of phase shifter 2; Linear potentiometer 3 can be stirred simultaneously in described slide block 24 lower ends.
Described deceleration direct current generator 1 drives leading screw 23 and rotates, and described leading screw 23 drives slide block 24 moving linearlies; The terminal shaft of 25 pairs of leading screws 23 of described back-up ring is to displacement restriction.Described slide block 24 drives push rod 27 and makes phase shifter 2 motions.The omnidistance run duration of slip that the lower end of described slide block 24 is stirred linear potentiometer 3 simultaneously is 1-2 minute.Corresponding control stroke is at least 2/3rds of potentiometer total travel.
A kind of detection method that adopts the electronic declination angle of communication antenna of above-mentioned pick-up unit is installed potentiometer, phase shifter and motor driver in the antenna of mobile communication base station, and connects according to above-mentioned detection device;
If the potentiometer moved end omnidistance when mobile and the resistance value between another stiff end from R1 to R2, change, establish again phase shifter omnidistance when mobile the electrical down-tilting angle of antenna change from 0 to N degree.The resistance change amount of correspondence when (R2-R1)/N is exactly 1 ° of the every variation of angle of declination so, the ratio that is in line changes.Add the voltage that immobilizes for the potentiometer stiff end, when electric current flows through potentiometer and is placed on stake resistance in the controller, the voltage that can detect a follower ends change in location in the moved end and change, because there is electric current to pass through, the ratio so actual output voltage and resistance value are not in line, and according to changing near the hyperbolic curve rule.This voltage is through 10 analog-digital converters (A/D), handles through the controller calculation procedure after becoming numeral, is reduced to the amount of linear change; This linear amount is corresponding resistance value in proportion just, simultaneously the also angle of corresponding phase shifter in proportion.As long as take advantage of a scale-up factor just to change into the tilt angled down of antenna.
During closed-loop control instruction angle and present detection angles are compared the rotation direction of decision drive motor, disable motor when arriving assigned address (angle).
Arrive R1 or the R2 numerical value of setting if move the potentiometer moved end, also promptly arrive the phase shift range border of phase shifter; When controller detects angle and is in the bound place value, folk prescription to disable motor, is without prejudice with the protection mechanical driving part.
If it is very big that controller detects the resistance of potentiometer, can judge that the cable that connects antenna and controller has broken or do not have socket.If it is minimum to detect the resistance of potentiometer, can judge that cable has short circuit phenomenon.If when motor is rotated, detect aerial angle and do not change, can judge that then kinematic train has fault.
Claims (6)
1, a kind of pick-up unit of electronic declination angle of communication antenna, it is characterized in that: it comprises: motor driver (1), phase shifter (2), potentiometer (3) and controller; The moved end of described potentiometer (3) and the movable part mechanical attachment of phase shifter (2), described motor driver (1) drives phase shifter (2), potentiometer (3) is synchronized with the movement, increase a changeless voltage for potentiometer (3) stiff end, when electric current flows through potentiometer (3) and is placed on stake resistance in the controller, the voltage that detects a follower ends change in location in potentiometer (3) moved end and change, this voltage is through 10 analog-digital converters, handle through the controller calculation procedure after becoming numeral, to be used to detect electronic declination angle of communication antenna.
2, the pick-up unit of electronic declination angle of communication antenna according to claim 1, it is characterized in that: described potentiometer (3) is a rotational potentiometer, described motor driver (1) is for containing the drive motor of speed reduction unit, gear (12) in the described drive motor rotating shaft is through neutral gear (13) and gear (14) coupling that is contained in described phase shifter (2) rotating shaft, and the gear (12) in the described drive motor rotating shaft meshes with the gear (11) that is contained in rotational potentiometer (3) rotating shaft simultaneously.
3, the pick-up unit of electronic declination angle of communication antenna according to claim 2 is characterized in that: the omnidistance run duration of described phase shifter (2) is 1-2 minute; Described potentiometer (3) no matter be multi-turn or individual pen, corresponding control stroke is at least 2/3rds of potentiometer (3) total travel.
4, the pick-up unit of electronic declination angle of communication antenna according to claim 1, it is characterized in that: described potentiometer (3) is a linear potentiometer, described motor driver (1) is the deceleration direct current generator, described deceleration direct current generator is installed on the support (22), leading screw (23) is housed in the rotating shaft of described deceleration direct current generator, and described leading screw (23) is threaded with the slide block (24) of moving linearly; Described support (22) is provided with a back-up ring (25), and described back-up ring (25) is positioned at the end of leading screw (23); Described slide block (24) is connected with the other end that an end is connected with the push rod (27) of phase shifter (2); Linear potentiometer (3) can be stirred simultaneously in described slide block (24) lower end.
5, a kind of detection method that adopts the electronic declination angle of communication antenna of the pick-up unit of any one among the claim 1-4 is characterized in that it comprises the steps:
(1) pick-up unit is installed on the antenna of mobile communication base station;
(2) it is omnidistance when mobile and the variation of resistance value from R1 to R2 between another stiff end to measure the potentiometer moved end, simultaneously, measure the omnidistance lower decline angle variation of antenna when mobile of the phase shifter that is synchronized with the movement with potentiometer, and the resistance change amount of correspondence is (R2-R1)/N when calculating 1 ° of the every variation of angle of declination from 0 ° to N °;
(3) give the potentiometer stiff end and add the voltage that immobilizes, electric current flows through potentiometer and is placed on the interior stake resistance of controller, detects a voltage that changes with potentiometer moved end change in location in the moved end; This voltage is handled through the controller calculation procedure after 10 analog-digital converters become numeral, be reduced to amount with the linear ratio of resistance variations, also be the amount that is varied to linear scaling with the angle of phase shifter simultaneously, by multiply by the tilt angled down that a scale-up factor just can calculate antenna.
6, the detection method of electronic declination angle of communication antenna according to claim 5 is characterized in that: the output terminal potential difference (PD) of described potentiometer adopts the telepilot that is positioned at base station machine room to detect in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100366451A CN1332175C (en) | 2005-08-23 | 2005-08-23 | Apparatus and method for detecting electronic declination angle of communication antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100366451A CN1332175C (en) | 2005-08-23 | 2005-08-23 | Apparatus and method for detecting electronic declination angle of communication antenna |
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| CN1734227A CN1734227A (en) | 2006-02-15 |
| CN1332175C true CN1332175C (en) | 2007-08-15 |
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| CNB2005100366451A Expired - Fee Related CN1332175C (en) | 2005-08-23 | 2005-08-23 | Apparatus and method for detecting electronic declination angle of communication antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149113A (en) * | 2018-08-24 | 2019-01-04 | 武汉虹信通信技术有限责任公司 | A kind of electrical tilt antenna lower decline angle regulating device and method |
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| CN103474774B (en) * | 2012-06-08 | 2018-01-26 | 罗森伯格（上海）通信技术有限公司 | A kind of antenna for base station lower decline angle adjusting apparatus and method |
| CN103594800B (en) * | 2012-08-17 | 2018-04-17 | 罗森伯格（上海）通信技术有限公司 | The control device and control system of a kind of electrical tilt antenna |
| CN103545614B (en) * | 2013-11-12 | 2016-03-16 | 武汉虹信通信技术有限责任公司 | Manual electricity adjusts the antenna assembly adjusted with far-end electric tuning |
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| CN106602266B (en) * | 2016-12-14 | 2019-11-12 | 深圳日海通讯技术股份有限公司 | A kind of electricity tune method and device of mobile communication intelligent antenna |
| CN109387142A (en) * | 2018-11-27 | 2019-02-26 | 江汉大学 | A kind of system and method that variable resistance measures shift length and rotation angle |
| CN110514107B (en) * | 2019-09-12 | 2020-07-07 | 清华大学 | Method and system for measuring rotation angle of satellite antenna around visual axis |
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| US5798675A (en) * | 1997-02-25 | 1998-08-25 | Radio Frequency Systems, Inc. | Continuously variable phase-shifter for electrically down-tilting an antenna |
| CN1191460A (en) * | 1997-02-17 | 1998-08-26 | 富士通株式会社 | Wireless base station equipment |
| CN1264257A (en) * | 1999-02-01 | 2000-08-23 | 朗迅科技公司 | System and method for control antenna down incline/upper incline in radio communication net |
| US6346924B1 (en) * | 1994-11-04 | 2002-02-12 | Andrew Corporation | Antenna control system |
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2005
- 2005-08-23 CN CNB2005100366451A patent/CN1332175C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6346924B1 (en) * | 1994-11-04 | 2002-02-12 | Andrew Corporation | Antenna control system |
| CN1191460A (en) * | 1997-02-17 | 1998-08-26 | 富士通株式会社 | Wireless base station equipment |
| US5798675A (en) * | 1997-02-25 | 1998-08-25 | Radio Frequency Systems, Inc. | Continuously variable phase-shifter for electrically down-tilting an antenna |
| CN1264257A (en) * | 1999-02-01 | 2000-08-23 | 朗迅科技公司 | System and method for control antenna down incline/upper incline in radio communication net |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109149113A (en) * | 2018-08-24 | 2019-01-04 | 武汉虹信通信技术有限责任公司 | A kind of electrical tilt antenna lower decline angle regulating device and method |
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