Background technology
Along with developing rapidly of mobile communication technology, the 3G wireless communication system of China has been extensive use of electrical tilt antenna.So-called electrical tilt antenna, promptly refer to use electronics to adjust the portable antenna of tilt angled down, its principle is by the phase change vertical component that changes conllinear array antenna a period of time and the amplitude size of horizontal component, realizes the change of synthetic component field intensity intensity, thereby the vertical directivity pattern of antenna is had a down dip.Facts have proved, when the electric melody aerial lower inclination angle degree changes in 1 ° to 5 ° scope, its antenna pattern and mechanical antenna roughly the same; When tilt angled down changes in 5 ° to 10 ° scope, the more mechanical antenna of its antenna pattern improvement arranged slightly; When tilt angled down changed in 10 ° to 15 ° scope, the variation of the more mechanical antenna of its antenna pattern was bigger; When electrical tilt antenna has a down dip after 15 °, the directional diagram of the more mechanical antenna of its antenna pattern is obviously different, and at this moment the electrical tilt antenna pattern shapes changes not quite, obviously shortens along the main lobe direction coverage distance, and the entire antenna directional diagram is all in this base station section.
At present, the function that common antenna equipment in the 2G wireless communication system does not have electricity to transfer, therefore, industry wishes to increase electric conditioning function in existing antenna equipment, or in newly-increased 2G network, adopt electrical tilt antenna, mainly adopt for the control problem prior art behind the employing electrical tilt antenna electric-tuning antenna device is controlled with the 2G main equipment separately.Because the 2G base station equipment is comparative maturity, and electric-tuning antenna device is a kind of new antenna equipment with respect to the 2G system, if exploitation electricity regulation and control system function is upgraded to existing 2G system equipment, need in the 2G systems soft ware, increase electricity regulation and control system function, because original hardware does not support electricity to transfer communication interface, so hardware also must be upgraded, yet stability and maintenance work that software and hardware is revised simultaneously to system have brought negative effect, and the HardwareUpgring cost is higher.If use the scheme of standing altogether, must under the prerequisite of the interoperability that guarantees 2G and 3G system, could realize the electricity accentization upgrading of 2G system, almost can't realize common station scheme for the antenna of different operators.
The utility model content
In order to solve the problems referred to above of prior art, the purpose of this utility model provides a kind of hand held controller that electrical tilt antenna is controlled of being used for separately.
To achieve these goals, the utility model provides the hand held controller of a kind of base station electrical tilt antenna, comprise casing and the MCU system that is positioned at described casing, described hand held controller comprises that also the first serial that is positioned at described casing changes the RS485 circuit, second serial changes the RS485 circuit and serial ports changes the OOK circuit, and is positioned at AISG interface and BT connector on the described casing;
Described first serial changes the RS485 circuit and described second serial commentaries on classics RS485 circuit all has serial ports end and RS485 end, and described serial ports changes the OOK circuit and has serial ports end and OOK end;
The serial ports end that described first serial changes the RS485 circuit is connected with described MCU system, the RS485 end that described first serial changes the RS485 circuit is connected with the RS485 end that described second serial changes the RS485 circuit, and the serial ports end that described second serial changes the RS485 circuit is connected with the serial ports end that described serial ports changes the OOK circuit;
Described AISG interface is connected with the RS485 end that described first serial changes the RS485 circuit, and described BT connector is connected with the OOK end that described serial ports changes the OOK circuit.
As preferably, described BT connector is SMA interface or radio-frequency (RF) coaxial interface.
As preferably, described hand held controller also comprises input circuit, display circuit and the electric power management circuit that is connected with described MCU system.
As preferably, described hand held controller is built-in with the lithium battery that is used to power, and described casing is provided with the power interface that is connected with described electric power management circuit.
As preferably, described input circuit is a keyboard circuit.
As preferably, described display circuit is a liquid crystal display circuit.
As preferably, described hand held controller comprises that also the serial ports that is connected with described MCU system that is positioned at described casing changes the USB circuit, and is positioned at and is used to connect USB interface of computer on the described casing.
Compared with prior art, the utlity model has following beneficial effect: the hand held controller that the utility model provides is used for separately electrical tilt antenna is controlled, and has avoided the 2G base station equipment is upgraded; Described hand held controller is provided with directly and connects the AISG interface of antenna control unit and the BT connector of controlling by the biasing T connector connecting system on the feeder line by the AISG control cable, and two kinds of interfaces can be applied to different signal transmission forms respectively; When controlling by BT connector connecting system, just can be directly under tower hand held controller be connected problems such as the enforcement difficulty of having avoided long distance laying AISG control cable to bring is big, cost is high, poor reliability and issuable thunderbolt with the biasing T connector.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Fig. 1 is the external structure schematic diagram of hand held controller of the present utility model, and Fig. 2 is the electrical block diagram of hand held controller shown in Figure 1.As depicted in figs. 1 and 2, the hand held controller that present embodiment provides comprises casing 4 and is positioned at MCU (microcontroller, the MicroControl Unit) system of casing 4 and input circuit, display circuit and the electric power management circuit that is connected with described MCU system; Wherein, described input circuit is a keyboard circuit, and described display circuit is a liquid crystal display circuit;
Described hand held controller comprises that also the first serial that is positioned at casing 4 changes the RS485 circuit, second serial changes the RS485 circuit and serial ports changes OOK (binary system on off keying, On-Off Keying) circuit, and be positioned at AISG interface 402 and BT connector on the casing 4, described BT connector can be selected SMA (Sub-Miniature-A, the anti-level of SMA property male) interface 401 or similar with it radio-frequency (RF) coaxial interface select to adopt SMA interface 401 in the present embodiment;
Described first serial changes the RS485 circuit and described second serial commentaries on classics RS485 circuit all has serial ports end and RS485 end (not shown), described serial ports changes the OOK circuit and has serial ports end and OOK end (not shown), wherein each described serial ports end all is used for the input and output of rs 232 serial interface signal, each described RS485 end all is used for the input and output of RS485 signal, and described OOK end is used for the input and output of OOK modulation signal;
The serial ports end that described first serial changes the RS485 circuit is connected with described MCU system, the RS485 end that described first serial changes the RS485 circuit is connected with the RS485 end that described second serial changes the RS485 circuit, and the serial ports end that described second serial changes the RS485 circuit is connected with the serial ports end that described serial ports changes the OOK circuit; AISG interface 402 is connected with the RS485 end that described first serial changes the RS485 circuit, and described BT connector is connected with the OOK end that described serial ports changes the OOK circuit;
Described hand held controller comprises that also the serial ports that is connected with described MCU system that is positioned at casing 4 changes the USB circuit, and is positioned at and is used to connect USB interface of computer 403 on the casing 4;
Described hand held controller is built-in with the lithium battery that is used to power, and casing 4 is provided with the power interface 404 that is connected with described electric power management circuit, is used for external power adapter and is described hand held controller power supply and be described lithium cell charging;
Also be provided with keyboard 406 that is used for input of control commands and the LCDs 405 that is used for display message on the casing 4.
Fig. 3 is first kind of connected mode schematic diagram of hand held controller shown in Figure 1.As Fig. 1, Fig. 2 and shown in Figure 3, in first kind of connected mode, PCU (hand held controller, Portable Control Unit) is directly connected to an ACU (antenna control unit by AISG control cable 2, Antenna Control Unit) on, connect with the AISG interface on the described hand held controller 402 this moment;
When adopting described hand held controller that the lower decline angle of described electrical tilt antenna is regulated, control command at first is input to described keyboard circuit through keyboard 406, sends described MCU system then to; Described MCU system is sent to the serial ports end that described first serial changes the RS485 circuit with the control command of the rs 232 serial interface signal form that receives, changes after the RS485 circuit conversion is the RS485 signal through described first serial, by 402 outputs of the AISG interface on the casing 4; The RS485 signal of last AISG interface 402 outputs is transferred to described antenna control unit via AISG control cable 2, realizes the control to the lower decline angle of described electrical tilt antenna;
When returning the angle of declination information of described electrical tilt antenna, the angle of declination information of RS485 signal form at first is sent to the AISG interface of described hand held controller by AISG control cable 2, be sent to the serial ports end of described first serial commentaries on classics RS485 circuit then, change after the RS485 circuit conversion is rs 232 serial interface signal through described first serial, export described MCU system to; At last, described MCU system is presented at it on LCDs 405 after the angle of declination information of RS485 signal form is sent to described liquid crystal display circuit.
Fig. 4 is second kind of connected mode schematic diagram of hand held controller shown in Figure 1.As Fig. 1, Fig. 2 and shown in Figure 4, in second kind of connected mode, be sequentially set with BT (biasing T connector on the feeder line 1 that first electrical tilt antenna connects from bottom to top, Bias Tee) and OOK change the RS485 unit, the antenna control unit that described OOK commentaries on classics RS485 unit is connected with described first electrical tilt antenna connects by AISG control cable 2, described biasing T connector has the SMA interface, described OOK commentaries on classics RS485 can select SBT (Smart Bias-Tee) or DTMA in the unit, and (double tower is put, Duplex TMA), in this signal transmission form, select to use DTMA; Described hand held controller is used the SMA interface 401 on the hand held controller this moment by directly insert the control of described biasing T connector realization to described antenna control unit under tower;
When adopting described hand held controller that the lower decline angle of described electrical tilt antenna is regulated, control command at first is input to described keyboard circuit through keyboard 406, sends described MCU system then to; Described MCU system is sent to the serial ports end that described first serial changes the RS485 circuit with the control command of the rs 232 serial interface signal form that receives, change the RS485 end that is sent to described second serial commentaries on classics RS485 circuit after the RS485 circuit conversion is the RS485 signal through described first serial, change being sent to the serial ports end that described serial ports changes the OOK circuit after the RS485 circuit conversion is rs 232 serial interface signal then through described second serial, after being converted to the OOK modulation signal behind the described serial ports commentaries on classics OOK circuit, export the SMA interface of described hand held controller again to; The SMA interface 401 of described hand held controller is connected by SMA cable 3 with the SMA interface of described biasing T connector, described OOK modulation signal is coupled to and is sent to described DTMA in the feeder line 1, OOK modulation signal in the feeder line 1 is after DTMA converts the RS485 signal to, be sent to described antenna control unit through AISG control cable 2, realize control the lower decline angle of described electrical tilt antenna;
When returning the angle of declination information of described electrical tilt antenna, the angle of declination information of RS485 signal form at first is sent to described DTMA by AISG control cable 2, after being the OOK modulation signal with the RS485 conversion of signals, DTMA is sent to described biasing T connector, after SMA interface output, be sent to SMA interface on the hand held controller through the SMA cable by the biasing T connector; OOK modulation signal sequencing is after described serial ports changes OOK circuit, described second serial and changes RS485 circuit and described first serial and change the RS485 circuit and carry out conversion of signals then, and the rs 232 serial interface signal that obtains is sent to described MCU system; At last, described MCU system is presented at it on LCDs 405 after the angle of declination information of RS485 signal form is sent to described liquid crystal display circuit.
When hand held controller is connected by second kind of connected mode, electrical tilt antenna and antenna control unit all are installed on the base station towers, be sequentially set with biasing T connector and OOK commentaries on classics RS485 unit on the feeder line 1 that first electrical tilt antenna connects from bottom to top, described hand held controller is connected by SMA cable 3 with described biasing T connector, thereby avoid adopting first kind of AISG control cable 2 in the signal transmission form, reduced cost; Owing under tower, just can directly hand held controller be connected with the biasing T connector, thereby avoided through exposing to the weather, adopt the problem of AISG control cable stability and reliability meeting variation, also reduced at thunder and lightning weather owing to adopting long AISG control cable 2 to cause the problem of thunderbolt.
Above embodiment is an exemplary embodiment of the present utility model only, is not used in restriction the utility model, and protection range of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection range, this modification or be equal to replacement and also should be considered as dropping in the protection range of the present utility model.