Satellite television signal automatic regulator based on bridge

Abstract

The utility model discloses an automatic satellite television signal regulator based on a bridge. The automatic satellite television signal regulator comprises a chassis, a lower rack, an upper rack, a signal reflecting plate, a receiver, a control unit, a stepping motor M1 and a stepping motor M2, the four sides of the signal reflecting plate are each provided with two signal sensor resistors, the left pair of signal sensor resistors and the right pair of signal sensor resistors form a bridge, and the control unit sends forward and reverse rotation pulse signals to the stepping motor M1 for forward rotation or reverse rotation according to instructions of the receiver. Therefore, the orientation of the satellite television signal antenna in the vertical axis direction can be automatically adjusted. The automatic regulator of the utility model can automatically adjust the orientation of the satellite television signal when the satellite television signal deviates from the orientation of the automatic regulator of the satellite television signal, so that the receiving antenna of the automatic regulator of the satellite television signal is always accurately aligned with the satellite signal, and the signal receiving effect of the automatic regulator of the satellite television signal is effectively improved.

Description

Technical Field

[0001] The utility model relates to an automatic regulator for satellite TV signals, in particular to an automatic regulator for satellite TV signals based on an electric bridge. Background Art

[0002] The existing signal automatic tracking system is composed of a position sensor, a signal processing system, a servo system and a tracking frame. The automatic tracking algorithm module provides target capture, automatic tracking, platform control, electronic image stabilization, image zooming, translation and rotation, and OSD functions. However, there may be some problems. The complexity of the tracking algorithm may lead to limitations in system performance, such as slow processing speed, delayed response time, etc., which affect real-time performance. The automatic tracking system may be affected by environmental factors, sensor accuracy, data noise, etc. during target capture and tracking, resulting in low tracking accuracy. System stability is an important issue in the automatic tracking system, especially in complex environments or fast-moving conditions, the system may become unstable. For users who need a fixed-frequency signal automatic tracking device but do not need many functions and complex algorithms, the existing technology is not very convenient and affordable. In view of this, it is necessary to develop a satellite TV signal automatic adjuster based on a bridge. When the satellite TV signal automatic adjuster is roughly facing the satellite TV signal, it can adaptively and accurately align with the strongest direction of the satellite TV signal. Utility Model Content

[0003] In view of the problems and defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a fixed frequency signal automatic tracker to simplify the existing common signal automatic tracking system.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a satellite TV signal automatic regulator based on an electric bridge, comprising a chassis, a hinge, a lower frame, a signal reflecting plate, a receiver, a vertical shaft, an upper frame, a stepping motor M1, a first coupling, a stepping motor M2, a horizontal shaft, a second coupling, a receiver connecting rod and a control unit; the hinge is welded on the chassis, the stepping motor M2 is installed on the chassis, the horizontal shaft is installed on the hinge and is connected to the output shaft of the stepping motor M2 through the first coupling, the control unit is installed on the chassis, the lower frame is welded on the horizontal shaft, the stepping motor M1 is installed on the lower frame, the vertical shaft is installed on the output shaft of the stepping motor M1 through the second coupling, the upper frame is welded on the vertical shaft, the signal reflecting plate is welded on the upper frame, the receiver connecting rod is installed on the signal reflecting plate, and the receiver is installed on the receiver connecting rod, characterized in that the left end of the signal reflecting plate is equipped with a signal sensor resistor R2 and a signal The signal sensor resistor R4 is installed at the right end, the signal sensor resistor R1 and the signal sensor resistor R3 are installed at the upper end, and the signal sensor resistor R7 and the signal sensor resistor R9 are installed at the lower end. The signal sensor resistor R1 and the signal sensor resistor R3 form an electric bridge with the signal sensor resistor R1 and the signal sensor resistor R3. The control unit sends a forward and reverse pulse signal to the stepper motor M1 according to the instruction of the receiver. The stepper motor M1 rotates forward or reversely according to the order of the arrival of the received pulse signal, thereby adjusting the position of the satellite TV signal antenna to automatically adjust the regulator in the vertical axis direction; the signal sensor resistor R7, the signal sensor resistor R8, the signal sensor resistor R9, and the signal sensor resistor R10 use the same principle to control the stepper motor M2 to rotate forward or reverse according to the order of the arrival of the received pulse signal, thereby adjusting the position of the satellite TV signal antenna to automatically adjust the regulator in the horizontal axis direction.

[0005] The control unit comprises a single-chip microcomputer AT89C51 and a chip ULN2003A.

[0006] The single chip microcomputer AT89C51 sends out forward and reverse pulse signals according to the instructions of the receiver, and the chip ULN2003A receives the pulse signals and directly outputs the signals to the stepper motor M1 after amplifying the signals, and the stepper motor M1 rotates forward or reverse according to the order in which the received pulse signals arrive.

[0007] The working principle of the utility model of a satellite TV signal automatic tracker based on a bridge is:

[0008] When the signal strength received by one end of the satellite TV signal automatic regulator where the signal sensor resistors R1 and R3 are located is greater than the signal strength received by one end of the satellite TV signal automatic regulator where the signal sensor resistors R2 and R4 are located, the bridge output voltage turns on the diode D1, the diode D2 is turned off, the intermediate relay KA1 is energized, the normally open contact of the intermediate relay KA1 is closed, and the P0.0 / AD0 of the single-chip microcomputer AT89C51 is at a low level, so that the output terminals P2.0 / A8, P2.1 / A9, P2.2 / A10, and P2.3 / A11 of the single-chip microcomputer AT89C51 send out forward pulse signals according to the instructions of the receiver 7. The forward pulse signals The signal is transmitted to the stepper motor through the chip ULN2003A. The stepper motor drives the satellite TV signal automatic adjustment system to rotate forward according to the pulse signal, and adjusts the position of the satellite TV signal automatic adjuster so that the signal strength received by the signal sensor resistors at both ends of the satellite TV signal automatic adjuster is the same; similarly, when the signal strength received by one end of the satellite TV signal automatic adjustment system where the signal sensor resistors R1 and R3 are located is less than the signal strength received by one end of the satellite TV signal automatic adjustment system where the signal sensor resistors R2 and R4 are located, the bridge output voltage turns on the diode D2, the diode D1 is turned off, the intermediate relay KA2 is energized, and the normally open contact of the intermediate relay KA2 is closed. When the P0.1 / AD1 of the single-chip computer AT89C51 is at a low level, the output terminals P2.0 / A8, P2.1 / A9, P2.2 / A10 and P2.3 / A11 of the single-chip computer AT89C51 send out inversion pulse signals according to the instruction of the receiver 7. The inversion pulse signals are transmitted to the stepper motor via the chip ULN2003A. The stepper motor reverses according to the pulse signals and adjusts the orientation of the satellite TV signal automatic regulator so that the signal strengths received by the signal sensor resistors at both ends of the satellite TV signal automatic regulator system are the same; when the signal strength received by one end of the satellite TV signal automatic regulator system where the signal sensor resistor R1 and the signal sensor resistor R3 are located is equal to the signal sensor resistor R2 When the signal strength received by one end of the satellite TV signal automatic adjuster where the signal sensor resistor R4 is located is greater than that of the signal sensor resistor R4, the output voltage of the bridge is zero, the diode D1 and the diode D2 cannot be turned on, the P0.0 / AD0 port and the P0.1 / AD1 port of the single-chip microcomputer AT89C51 are both in a high level state, and the output terminals P2.0 / A8, P2.1 / A9, P2.2 / A10, and P2.3 / A11 of the single-chip microcomputer AT89C51 no longer send out pulse signals according to the program, and the stepper motor M1 stops or remains stationary; the signal sensor resistor R7, the signal sensor resistor R8, the signal sensor resistor R9, and the signal sensor resistor R10 use the same principle to control the rotation or stop of the stepper motor M2.

[0009] The beneficial effect of the utility model is that the satellite TV signal automatic adjuster equipped with the utility model can automatically adjust its orientation when the satellite TV signal deviates from the orientation of the satellite TV signal automatic adjuster, so that the receiving antenna of the satellite TV signal automatic adjuster is always accurately aligned with the satellite signal, effectively improving the signal receiving effect of the satellite TV signal automatic adjuster. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0011] Figure 1 This is a front schematic diagram of a satellite TV signal automatic regulator based on a bridge according to the utility model;

[0012] Figure 2 This is a side schematic diagram of a satellite TV signal automatic regulator based on a bridge according to the utility model;

[0013] Figure 3 This is a schematic diagram of the circuit control of the stepping motor M1 of the satellite TV signal automatic regulator based on a bridge in the utility model;

[0014] Figure 4 The utility model is a schematic diagram of a control circuit of a stepping motor M2 of a satellite TV signal automatic regulator based on a bridge.

[0015] Figure numerals: 1. chassis, 2. hinge, 3. lower frame, 4. R2, 5. R7, 6. signal reflection plate, 7. receiver, 8. R4, 9. R8, 10. vertical axis, 11. R10, 12. R3, 13. upper frame, 14. R9, 15. R1, 16. motor M1, 17. first coupling, 18. motor M2, 19. horizontal axis, 20. second coupling, 21. receiver connecting rod, 22. control unit. DETAILED DESCRIPTION

[0016] In order to more clearly understand the technical means of the present invention, which can be implemented according to the contents of the specification, and to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings.

[0017] Figure 1 and Figure 2The utility model provides a front schematic diagram and a side schematic diagram of a satellite TV signal automatic regulator based on an electric bridge, comprising a chassis 1, a hinge 2, a lower frame 3, a signal sensor resistor R24, a signal sensor resistor R7, a signal reflecting plate 6, a receiver 7, a signal sensor resistor R4, a signal sensor resistor R8, a vertical shaft 10, a signal sensor resistor R10, a signal sensor resistor R13, an upper frame 13, a signal sensor resistor R9, a signal sensor resistor R1, a stepper motor M1, a first coupling 17, a stepper motor M2, a horizontal shaft 19, a second coupling 20, a receiver connecting rod 21, and a control unit 22; the hinge 2 is welded on the chassis 1, the stepper motor M2 is mounted on the chassis 1, the horizontal shaft 19 is mounted on the hinge 2 and is connected to the output shaft of the stepper motor M2 through the first coupling 17, the control unit 22 is mounted on the chassis 1, and the lower frame 3 is welded on the horizontal shaft 19 and can rotate together with the horizontal shaft 19, the stepping motor M1 is installed on the lower frame 3 and can rotate together with the lower frame 3, the vertical shaft 10 is installed on the output shaft of the stepping motor M1 through the second coupling 20, the upper frame 13 is welded on the vertical shaft 10 and can rotate together with the vertical shaft 10, the signal reflecting plate 6 is welded on the upper frame 13, the receiver connecting rod 21 is installed on the signal reflecting plate 6, the receiver 7 is installed on the receiver connecting rod 21, the signal sensor resistor R2 and the signal sensor resistor R4 are installed on the left end of the signal reflecting plate 6, the signal sensor resistor R1 and the signal sensor resistor R3 are installed on the right end of the signal reflecting plate 6, the signal sensor resistor R8 and the signal sensor resistor R10 are installed on the upper end of the signal reflecting plate 6, and the signal sensor resistor R7 and the signal sensor resistor R9 are installed on the lower end of the signal reflecting plate 6.

[0018] Figure 3 This is a schematic diagram of the control circuit of the stepping motor M1 of the satellite TV signal automatic regulator based on a bridge in the utility model. Figure 4 This is a schematic diagram of the control circuit of the stepping motor M2 of the satellite TV signal automatic regulator based on a bridge in the utility model. Figure 3 The signal sensor resistor R1, signal sensor resistor R2, signal sensor resistor R3, and signal sensor resistor R4 constitute a bridge of the automatic adjustment system, and the specifications of the signal sensor resistor R1, signal sensor resistor R2, signal sensor resistor R3, and signal sensor resistor R4 are exactly the same and the initial resistance value is R. Figure 2 The control unit 22 includes a DC power supply VCC, a single-chip microcomputer AT89C51, a fixed resistor R5, a fixed resistor R6, an intermediate relay KA1, an intermediate relay KA2, a diode D1, a diode D2 and a reset button K.

[0019] Assume that the voltage of the DC power supply VCC in the bridge is U OThe resistance changes of signal sensor resistors R1, R2, R3 and R4 when receiving signals are respectively

[0020] ΔR1, ΔR2, ΔR3, ΔR4, and ΔR1=ΔR3, ΔR2=ΔR4, then:

[0021]

[0022] When the signal strength received by one end of the signal sensor resistor R1 and the signal sensor resistor R3 is greater than the signal strength received by one end of the signal sensor resistor R2 and the signal sensor resistor R4, ΔR1>ΔR2, then U BC >0. From the unidirectional conductivity of the diode, it can be seen that the diode D1 is turned on and the diode D2 is turned off. The intermediate relay KA1 is energized and its normally open contact is closed. The P0.0 / AD0 of the single-chip microcomputer AT89C51 is at a low level, so that the output terminals P2.0 / A8, P2.1 / A9, P2.2 / A10, and P2.3 / A11 of the single-chip microcomputer AT89C51 send out a forward pulse signal according to the instruction of the receiver 7. The forward pulse signal is transmitted to the stepper motor M1 through the chip ULN2003A. The stepper motor M1 drives the vertical shaft 10 to rotate forward according to the pulse signal. When the vertical shaft 10 drives the signal reflection plate 6 to rotate to the vertical direction where the satellite signal is strongest, the signal strengths received by the signal sensor resistors at the left and right ends of the signal reflection plate 6 are the same, ΔR1=ΔR2, then U BC =0, diode D1 and diode D2 are both cut off, P0.0 / AD0 port and P0.1 / AD1 port of single-chip microcomputer AT89C51 are both in high level state, output terminals P2.0 / A8, P2.1 / A9, P2.2 / A10, P2.3 / A11 of single-chip microcomputer AT89C51 no longer send pulse signals according to the instruction of receiver 7, and stepper motor M1 stops rotating; similarly, when the signal strength received by one end of signal sensor resistor R1 and signal sensor resistor R3 is less than the signal strength received by one end of signal sensor resistor R2 and signal sensor resistor R4, ΔR1<ΔR2, then U BC <0, the stepper motor M1 drives the rotating vertical shaft 10 to reverse according to the pulse signal, and when the vertical shaft 10 drives the signal reflection plate 6 to rotate to the point where the satellite signal is strongest in the vertical direction, the stepper motor M1 stops rotating; when the signal strength received by one end of the signal sensor resistor R1 and the signal sensor resistor R3 is equal to the signal strength received by one end of the signal sensor resistor R2 and the signal sensor resistor R4, the satellite TV signal is at the strongest position in the vertical direction of the signal reflection plate 6, and the stepper motor M1 remains stationary; Figure 4The stepper motor M2 drives the horizontal axis 19 through the signal sensor resistors R7, R9, R8 and R10 using the same principle, so that the horizontal axis 19 drives the signal reflection plate 6 to rotate to the strongest position of the satellite signal in the horizontal direction.

[0023] The utility model discloses a satellite TV signal automatic adjustment system automatic tracking system based on a bridge. The system adopts two groups of four signal sensor resistors to form a full-bridge arrangement to realize automatic adjustment of satellite TV signals. However, two signal sensor resistors can also be used to form a half-bridge arrangement to realize automatic adjustment of the sun.

[0024] The present invention is not limited to the above examples, and is also applicable to other satellite signal automatic adjustment and tracking devices. The above two aspects should be included in the protection scope of the present invention.

Claims

1. A satellite TV signal automatic regulator based on a bridge, comprising a chassis (1), a hinge (2), a lower frame (3), a signal reflection plate (6), a receiver (7), a vertical shaft (10), an upper frame (13), a stepper motor M1 (16), a first coupling (17), a stepper motor M2 (18), a horizontal shaft (19), a second coupling (20), a receiver connecting rod (21) and a control unit (22); the hinge (2) is welded to the chassis (1), the stepper motor M2 (18) is mounted on the chassis (1), the horizontal shaft (19) is mounted on the hinge (2) and connected to the receiver via the first coupling (17). The control unit (22) is connected to the output shaft of the stepper motor M2 (18), the lower frame (3) is welded to the horizontal shaft (19), the stepper motor M1 (16) is mounted on the lower frame (3), the vertical shaft (10) is mounted on the output shaft of the stepper motor M1 (16) through a second coupling (20), the upper frame (13) is welded to the vertical shaft (10), the signal reflection plate (6) is welded to the upper frame (13), the receiver connecting rod (21) is mounted on the signal reflection plate (6), and the receiver (7) is mounted on the receiver connecting rod (21), characterized in that: The signal reflection plate (6) is provided with a signal sensor resistor R2 (4) and a signal sensor resistor R4 (8) at the left end, a signal sensor resistor R1 (15) and a signal sensor resistor R3 (12) at the right end, a signal sensor resistor R8 (9) and a signal sensor resistor R10 (11) at the top end, and a signal sensor resistor R7 (5) and a signal sensor resistor R9 (14) at the bottom end. The signal sensor resistor R1 (15) and the signal sensor resistor R3 (12) form an electric bridge with the signal sensor resistor R1 (15) and the signal sensor resistor R3 (12). The control unit (22) receives the signal from the control unit (22) and the signal sensor resistor R1 (15) and the signal sensor resistor R3 (12). The receiver (7) sends a forward and reverse pulse signal to the stepper motor M1 (16) according to the instruction of the receiving device (7), and the stepper motor M1 (16) rotates forward or reversely according to the order in which the received pulse signals arrive, thereby adjusting the position of the satellite TV signal antenna to automatically adjust the adjuster in the vertical axis direction; the signal sensor resistor R7 (5), the signal sensor resistor R8 (9), the signal sensor resistor R9 (14), and the signal sensor resistor R10 (11) use the same principle to control the stepper motor M2 (18) to rotate forward or reverse according to the order in which the received pulse signals arrive, thereby adjusting the position of the satellite TV signal antenna to automatically adjust the adjuster in the horizontal axis direction.

2. The satellite TV signal automatic regulator based on a bridge according to claim 1, characterized in that: The control unit (22) comprises a single-chip microcomputer AT89C51 and a chip ULN2003A.

3. The satellite TV signal automatic regulator based on a bridge according to claim 2, characterized in that: The single-chip microcomputer AT89C51 sends out forward and reverse pulse signals according to the instructions of the receiver (7), and the chip ULN2003A receives the pulse signals and amplifies the signals and directly outputs them to the stepper motor M1 (16). The stepper motor M1 (16) rotates forward or reverse according to the order in which the received pulse signals arrive.

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