CN2245273Y - Automatic control steering antenna - Google Patents
Automatic control steering antenna Download PDFInfo
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- CN2245273Y CN2245273Y CN 95243977 CN95243977U CN2245273Y CN 2245273 Y CN2245273 Y CN 2245273Y CN 95243977 CN95243977 CN 95243977 CN 95243977 U CN95243977 U CN 95243977U CN 2245273 Y CN2245273 Y CN 2245273Y
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Abstract
The utility model relates to an automatic control steering antenna which can automatically rotate to the optimum position for reception when the TV channel is changed, and is composed of a receiving antenna, a control box (1) for amplifying motor-driven signals, etc. The circuit of the control box (1) of the utility model adopts a synchronous-pulse detecting circuit to detect the intensity of video signals. When the antenna is turned to the optimum position, the output voltage of the circuit is high, and the optimum position is figured out by a comparison circuit. A drive part adopts an AC synchronous motor so that the images are clear without scintillation and interference.
Description
The utility model relates to a kind of automatic control position controlled rotary antenna, belongs to radio, automatic control technology field.
In the prior art, manual mode is used in the TV set aerial adjustment mostly at present, as the strong high-gain balcony formula position controlled rotary antenna of looking electrical apparatus factory's production of Wuxi City.Its control box is connected with the exterior aerial main part by triaxial cable, after antenna receives TV signal, is sent to control box through cable, imports television set then, and a direct current motor is arranged in the antenna body.When the user pins on the control box forward and reverse rotation button, direct current machine will be done corresponding forward and reverse rotation, drive the antenna receiving unit by reducing gear and do corresponding forward and reverse rotation.When obtaining satisfied TV image, unclamp button, antenna is stopped operating.This adjustment is exactly a manual control mode, also can use infrared remote-controlled signal, but its essence is identical.The mode of this adjustment antenna must have the user to participate in, and channel of every conversion just will once adjust, and uses very inconvenient; The not necessarily optimum reception direction of adjusting of aerial position, and when adjusting antenna, have serious flicker to disturb on the television image.
The purpose of this utility model overcomes the deficiencies in the prior art exactly, a kind of position controlled rotary antenna of adjusting in the Automatic Control mode is provided, this antenna utilizes the interchange video standard signal in the television set, when the user changes channel, this automatic control position controlled rotary antenna will begin rotation automatically, seek automatically and will stop on the optimum reception position, use very convenient, and clear image, flicker free is disturbed.
The utility model automatic control position controlled rotary antenna is by reception antenna, sliding plate, motor drive signal amplifier section, and composition such as control box.Control box is connected with the antenna drive part with television set respectively, and the input of control box can be drawn (exchanging 1V) by outer AV (video) standard interface of television set or by machine internal standard vision signal place from the interchange video standard signal in the television set.Under the general condition, the quality of TV image, sound is directly proportional with the power of received TV signal, and the latter is directly proportional with the power of synchronizing signal in the TV signal.The utility model adopts how many testing circuits of lock-out pulse to detect the power of vision signal.When antenna turned to the optimum position, the voltage of how much testing circuit output of lock-out pulse was inevitable the highest; Otherwise, then minimum.Adopt comparison circuit to judge the optimum position.
The control box circuit is by exchanging the vision signal follow circuit, and the start detection circuit is forbidden the repeated priming circuit, 15 seconds, 5 seconds timer circuits, sync separator circuit, lock-out pulse is how many testing circuits, peak value detects, comparison circuit, and composition such as Electric Machine Control drive circuit.
Vision signal is input to by resistance R 21, capacitor C 21, and resistance R 22, R23, triode BG21 and resistance R 24 constitutes exchanges the vision signal follow circuit.Its output is drawn by the resistance R 24 that is connected on the BG21 emitter, delivers to start detection circuit and sync separator circuit respectively.
In the start detection circuit, capacitor C 31, resistance R 31, R32, capacitor C 32 and potentiometer W1 finish the detection of dc point, when switching channels, influence dc point Ua, and Ua rises or after decline a period of time, just gets back to original working point.When Ua rose, the reverse input end current potential of the operational amplifier Ic1 that links to each other with R32 rose immediately, and the positive input of the Ic1 that links to each other with resistance R 35 with capacitor C 33 must just can rise after time-delay a period of time.Therefore, Ic1 output low level.When Ua descended, the reverse input end current potential of Ic1 descended immediately, and positive input must just can descend by resistance R 34 discharges that are attempted by between the forward and reverse input time-delay a period of time, and R35＞＞R34, therefore, the output high level.After a period of time Ua was constant, because the discharge process of R35, Ic1 is output low level always.That is to say that during switching channels, because Ua changes, the output Ub place of Ic1 is a high level pulse (6V), all the other time Ub ends are always low level.
By resistance R 41, capacitor C 41, resistance R 42, R43, R44 and triode BG41 constitute sync separator circuit.By capacitor C 42, resistance R 45, diode D41, D42, capacitor C 43, resistance R 46 and operational amplifier Ic5 constitute how many testing circuits of lock-out pulse.Exchange vision signal follow circuit output signal and be added to sync separator circuit, output to how many testing circuits of lock-out pulse by the R44 that is connected on the BG41 collector output again by R41, C41.When the quality of TV image, sound became good, isolated lock-out pulse increased, and Ic5 output Uc rises; Otherwise then Uc descends.
By resistance R 47, diode D43, D44, D45, capacitor C 44 and potentiometer W2, capacitor C 2, operational amplifier Ic6 constitutes peak value detection, comparison circuit.Wherein, the output of the Ic5 in resistance R 47 and how many testing circuits of lock-out pulse links to each other.This peak detection circuit is finished the detection to the Uc peak value.
By operational amplifier Ic3, Ic4 form 15 seconds respectively, 5 seconds timer circuits.Motor-drive circuit is by operational amplifier Ic7, resistance R 63, and LED 1 and SCR controllable silicon T1 constitute.By resistance R 36, R37, R51, R52, capacitor C 51, operational amplifier Ic2 formation is forbidden the repeated priming circuit.When Ic7 output high level, the antenna rotation; Otherwise stall.Operational amplifier Ic2 reverse input end meets Ub, and positive input links to each other with the Ic7 output by R52.Its effect is, from changing channel Ub output high level, antenna begins rotation (Ic7 is output as high level), in the period, shuts starting impulse Ud to antenna stall (Ic7 is output as low level) 1 second this section afterwards, forbids repeated priming.Promptly guarantee channel of every conversion, Ic2 output Ud only exports a low level pulse in the place.
The course of work of The whole control circuit is, when switching channels (not) in the normal state, Ua is stable, and Ub place be low level (0V), and owing to the dividing potential drop effect of resistance R 51, R52, the positive input of Ic2 is minimum also 4V, and therefore, Ud holds must be high level.In timer circuit, Ue place (reverse, the positive input of Ic3, Ic4) charges to high level (12V), is higher than Uf (7.0V) (Ic3 positive input) and Ug (3.7V) (Ic4 reverse input end).Therefore Ic3, Ic4 export low, high level respectively, and capacitor C 61 in the motor driving controling circuit is because the discharge process of resistance R 62 must be reduced to 0V, so antenna does not change.
During switching channels, dc point Ua changes, and the Ub end is exported high level pulse (6V), is higher than the 4V (this moment, Ic7 was a low level) of Ic2 positive input.Therefore, Ud end (Ic2 output) output one low level pulse.This low level pulse makes Ue reduce to 0.7V, timer picks up counting, Ic3, Ic4 export high and low level respectively, diode D62 conducting in the motor driving controling circuit, force antenna to begin to rotate 5 seconds, wait for that the Ic5 in how many testing circuits of lock-out pulse exports signal accurately, when beginning to rotate to suppress motor to the interference of power supply, be convenient to the user simultaneously and change channel during this period, and remove detected last time on the peak detection circuit peak value.After 5 seconds, the charging of Ue end is higher than the Ug end, and at this moment, Ic3, Ic4 export high level, and diode D62 conducting still forces antenna rotation 10 seconds.
Palpus is 8 seconds because antenna circles, so in these 10 seconds, antenna will rotate a circle, because diode D44, the D45 of peak detection circuit all anti-(D44, D45 link to each other with the output of Ic4, Ic3 respectively) partially, detect so will charge on the capacitor C 44 the maximum of Uc, promptly detect antenna what magnitude of voltage Ucmax of lock-out pulse when turning to the optimum position.After 10 seconds, Ue end charging is higher than Uf, Ug, so Ic3, Ic4 export respectively low, high level, be that diode D62 is anti-inclined to one side, because in the motor driving controling circuit, the discharge time constant that is attempted by the resistance R 62 of Ic7 positive input and capacitor C 61 is very big, so antenna will continue to rotate.Simultaneously, the diode D45 conducting in the peak detection circuit, D43 is anti-inclined to one side, and peak value will be kept on the capacitor C 44.Because the pressure drop of D43 is 0.6V,, can make that Ic6 began output low level when Uc was constant so adjustment is connected to the potentiometer W2 of Ic6 reverse input end to suitable position.Therefore, when antenna continues rotation, as turn to poor position, Uc＜Ucmax, Ic6 exports high level, and antenna will continue rotation; Turn to the optimum position as antenna, Uc＞＞Ucmax, the Ic6 output low level makes that voltage drop is 0V on the capacitor C 61, so antenna is with stall.
If the antenna rotation still can't be judged optimum after 30 seconds, then because the discharge process of resistance R 62 will force the antenna stall.This is because strong platform of only a few or no signal platform are arranged, and when antenna turned to any position, TV signal did not take place by significantly strong and weak the variation, and promptly Uc is almost constant.In this case, after 30 seconds, force antenna to be parked in any position and all be fine.When antenna rotates,, forbid that promptly the Ic2 positive input is 12V in the repeated priming circuit,, promptly can not start once more so can not there be low level pulse at its output Ud place because Ic7 is output as 12V.Antenna stall (Ic7 is output as low) is after 1 second, and the positive input of Ic2 is reduced to 4V by 12V, changes channel again, then can make the antenna rotation again.LED 1 in the motor driving controling circuit rotates indicator light for antenna.LED 2 in the timer circuit is in order to the working condition of indication test section, if motor, illustrates that the potentiometer W2 of test section does not adjust suitable or radio signals is too strong or do not have TV signal in moment stall or long-time (30 seconds) rotation back stall that LED2 brightens.Potentiometer W1 in the start detection circuit starts sensitivity in order to adjust, and potentiometer W2 is then in order to adjust detection sensitivity (stopping sensitivity).
Actuating section can utilize having or not as triggering signal of synchronizing signal to control, and also can adopt the mode of infrared remote control certainly.
Drive part can drive direct current machine or ac synchronous motor easily.When adopting direct current machine, the spark interfering TV signal that carbon brush produces makes image produce flicker and disturbs, so this device adopts ac synchronous motor, image was more clear when motor was rotated.When adopting ac synchronous motor to drive, antenna interconnecting piece is divided the method that can not adopt contact, sliding plate to connect, the method that only adopts transmission line to connect, and promptly antenna can only rotate in 360 ° of scopes.But because the arbitrariness that turns to of ac synchronous motor, promptly synchronous machine runs into and stops when a direction is rotated, will be to opposite spin, so but this antenna omnirange search for.
This antenna has been exempted the trouble that TV user is adjusted antenna, when changing channel, must be not manually or remote control, and this antenna promptly can rotate automatically, after 15 seconds, stall during arrival optimum reception direction position, extremely easy to use.The stall direction is more accurate, and image is more clear, almost noiseless when rotating.This installation cost is low, performance is excellent, is not only applicable to various colours, black and white television set, and according to its principle, adds a little, promptly can be used for the direction control of satellite tv antenna, radio station antenna, radio antenna.
Fig. 1 is the utility model automatic control position controlled rotary antenna schematic diagram.
Fig. 2 is the control box circuit block diagram of automatic control position controlled rotary antenna shown in Figure 1.
Fig. 3 is the circuit theory diagrams of automatic control position controlled rotary antenna control box shown in Figure 2.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
This automatic control position controlled rotary antenna is by reception antenna, sliding plate, motor drive signal amplifier section, and composition such as control box 1, as shown in Figure 1.Control box 1 is connected with the antenna drive part with television set respectively, and among the figure, A, B, C are respectively the vision signal of television set output, the aerial signal and the common port of control box output; D, E, F are respectively aerial signal, motor drive signal and common port.
In circuit theory diagrams shown in Figure 3, by resistance R 21, capacitor C 21, resistance R 22, R23, triode BG21 exchanges vision signal follow circuit 2 with resistance R 24 formations.Vision signal is imported at 11 ends, and this circuit output is drawn by the resistance R 24 that is connected on BG21 emitter 12, delivers to start detection circuit 3 and sync separator circuit 7 respectively.
By capacitor C 31, resistance R 31, R32, capacitor C 32, potentiometer W1 and resistance R 34, R35, capacitor C 33, operational amplifier Ic1 constitutes start detection circuit 3.Wherein, C31 links to each other with BG21 emitter-base bandgap grading output 12.Capacitor C 31, resistance R 31, R32, capacitor C 32 and potentiometer W1 finish the detection of dc point.Resistance R 34 is connected between the forward and reverse input of Ic1, and 33 of resistance R 35 and capacitor C are connected between the positive input and common port of Ic1.Resistance R 34, R35, capacitor C 33 and operational amplifier Ic1 constitute voltage and weaken testing circuit.
By resistance R 41, capacitor C 41, resistance R 42, R43, R44 and triode BG41 constitute sync separator circuit 7.By capacitor C 42, resistance R 45, diode D41, D42, capacitor C 43, resistance R 46 and operational amplifier Ic5 constitute how many testing circuits of lock-out pulse 8.By resistance R 47, diode D43, D44, D45, capacitor C 44 and potentiometer W2, capacitor C 2, operational amplifier Ic6 constitutes peak value detection, comparison circuit 9.By operational amplifier Ic3, Ic4 and diode D51, resistance R 53, capacitor C 52, resistance R 54, R55, R56, R57, R58, LED 2 constitute 15 seconds respectively, 5 seconds timers 6,5.Wherein, the output 15,16 of Ic3, Ic4 links to each other with the diode D45 of peak detection circuit 9, the backward end of D44 respectively.By diode D61, D62, resistance R 61, R62, capacitor C 61, operational amplifier Ic7, resistance R 63, LED 1, bidirectional triode thyristor T1 constitutes motor driving controling circuit 10.
By resistance R 36, R37, R51, R52, capacitor C 51, operational amplifier Ic2 formation is forbidden repeated priming circuit 4.
Claims (3)
1, a kind of automatic control position controlled rotary antenna, by reception antenna, sliding plate, motor drive signal amplifier section, and control box (1) forms, and it is characterized in that: the circuit of control box (1) by exchange vision signal follow circuit (2), start detection circuit (3), forbid repeated priming circuit (4), 15 seconds, 5 seconds timer circuits (6,5), sync separator circuit (7), how many testing circuits of lock-out pulse (8), peak values detect, comparison circuit (9) and motor driving controling circuit (10) are formed; Vision signal is input on the resistance R 21 (11) that exchanges vision signal follow circuit (2) by the television video output; The output that exchanges vision signal follow circuit (2) is drawn by the resistance R 24 (12) that is connected on triode BG21 emitter, delivers to start detection circuit (3) and delivers to sync separator circuit (7) by resistance R 41, capacitor C 41 by capacitor C 31 respectively; The output of sync separator circuit (7) is delivered on the capacitor C 42 of how many testing circuits of lock-out pulse (8) by the resistance R 44 that is connected on triode BG41 collector output (13); The output (14) of how many testing circuits of lock-out pulse (8) detects with peak value, the resistance R 47 of comparison circuit (9) links to each other with potentiometer W2; By operational amplifier Ic3, Ic4 form 15 seconds respectively, 5 seconds timers (6,5), its output (15,16) links to each other with peak value detection, the diode D45 of comparison circuit (9), D44 backward end respectively; Peak value detects, the output (17) of the operational amplifier Ic6 of comparison circuit (9) links to each other with the backward end of the diode D61 of motor driving controling circuit (10); The output (18) of the operational amplifier Ic7 of motor driving controling circuit (10) then links to each other with the resistance R 52 of forbidding repeated priming circuit (4); The output (19) of start detection circuit (3) joins with forbidding the resistance R 36 of repeated priming circuit (4); Forbid that repeated priming circuit (4) links to each other with the backward end of the diode D51 of timer circuit (6,5) by the output (20) of operational amplifier Ic2.
2, automatic control position controlled rotary antenna according to claim 1 is characterized in that; Be connected to resistance R 34 between the positive input of the operational amplifier Ic1 of start detection circuit (3) and the reverse input end, between the input forward or backwards of Ic1 and common port, be connected to capacitor C 33.
3, automatic control position controlled rotary antenna according to claim 1, it is characterized in that: motor-driven partly adopts ac synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95243977 CN2245273Y (en) | 1995-05-15 | 1995-05-15 | Automatic control steering antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95243977 CN2245273Y (en) | 1995-05-15 | 1995-05-15 | Automatic control steering antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2245273Y true CN2245273Y (en) | 1997-01-15 |
Family
ID=33884468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95243977 Expired - Fee Related CN2245273Y (en) | 1995-05-15 | 1995-05-15 | Automatic control steering antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2245273Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102210060A (en) * | 2008-10-07 | 2011-10-05 | 独立行政法人情报通信研究机构 | Pulse signal generation device |
-
1995
- 1995-05-15 CN CN 95243977 patent/CN2245273Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102210060A (en) * | 2008-10-07 | 2011-10-05 | 独立行政法人情报通信研究机构 | Pulse signal generation device |
| CN102210060B (en) * | 2008-10-07 | 2016-03-30 | 独立行政法人情报通信研究机构 | Pulse signal generation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |